WO2023159464A1 - Water path system of water softener, control method, and water softener - Google Patents

Abstract

A water path system of a water softener, a control method, and a water softener, the water path system of a water softener comprising: a salt tank (11); a resin tank (12); a salt suction channel (13), a first water inlet channel (14), and a confluence channel (15), a water inlet end of the salt suction channel (13) communicating with the salt tank (11), and a water outlet end of the salt suction channel (13) merging with a water outlet end of the first water inlet channel (14) and communicating with the resin tank (12) via the confluence channel (15); a water pump (16), which is disposed at the salt suction channel (13) and which is used to pump out a liquid from the salt tank (11) and cause said liquid to flow along the salt suction channel (13); and a flow restricting member (17), which is disposed at the first water inlet channel (14) and which is used to restrict the liquid flow delivered by the first water inlet channel (14). The described water path system of a water softener can improve the stability of regeneration performance.

Description

Waterway system of water softener, control method and water softener technical field

The present application relates to the technical field of water treatment, in particular to a waterway system of a water softener, a control method and the water softener.

Background technique

Water softeners generally use ion exchange resin technology to remove calcium and magnesium ions in water, thereby reducing the generation of scale and improving the water experience for bathing and washing. After a period of use, the ion exchange resin is saturated with calcium and magnesium ions, so it needs to be regenerated by flushing with concentrated brine to restore its performance.

The traditional water softener is generally equipped with an ejector in the water system. During regeneration, tap water is used as the power, and the saturated brine dissolved in the salt tank is sucked out through the Venturi effect of the ejector. The salt water is mixed with tap water to produce concentrated The brine enters the resin tank for regeneration. The whole regeneration power adopts tap water pressure. When the tap water pressure changes, the regeneration performance will have a large deviation, making the regeneration performance less stable.

Contents of the invention

The main purpose of this application is to propose a waterway system for a water softener, aiming at improving the stability of regeneration performance.

In order to achieve the above purpose, the waterway system of the water softener proposed by this application includes:

salt tank;

Resin tank;

A salt suction channel, a first water inlet channel and a confluence channel, the water inlet end of the salt suction channel communicates with the salt tank, the water outlet end of the salt absorption channel merges with the water outlet end of the first water inlet channel and communicating with the resin tank via the flow channel;

a water pump, arranged in the salt suction channel, for pumping out the liquid in the salt tank and flowing along the salt suction channel; and

The restrictor is arranged in the first water inlet channel, and is used for limiting the flow rate of the liquid transported by the first water inlet channel.

In one of the embodiments, the water pump is an adjustable speed water pump.

In one of the embodiments, the water system of the water softener includes softening water, water injection, dissolved salt water, backwash water, regeneration water, backwash water and a control device, and the control device is used to control the water softener The waterway system switches between the waterways.

In one of the embodiments, the restrictor has a restrictor hole for liquid to pass through, and the aperture size of the restrictor hole is fixed or the aperture size of the restrictor hole is adjustable.

In one of the embodiments, the salt suction channel is provided with a one-way valve, the one-way valve is located on the water outlet side of the water pump, and the one-way valve is used to limit the liquid from flowing back toward the water pump.

In one of the embodiments, the water system of the water softener further includes a first control valve disposed in the first water inlet channel, and the first control valve is used to open or close the first water inlet channel.

In one of the embodiments, the water system of the water softener further includes a water injection channel and a second control valve arranged in the water injection channel, the water injection channel communicates the first water inlet channel with the salt tank, The second control valve is used to open or close the water injection channel.

In one of the embodiments, the water system of the water softener further includes a connecting channel and a third control valve provided in the connecting channel, the connecting channel communicates the first water inlet channel with the confluence channel, The junction of the connecting channel and the first water inlet channel is located between the upstream of the restrictor and the downstream of the first control valve, and the third control valve is used to open or close the connecting channel .

In one of the embodiments, the water system of the water softener further includes a liquid storage container, a first delivery channel, a second delivery channel and a switch valve, and the salt suction channel communicates the salt tank with the liquid storage container , the first delivery channel communicates the liquid storage container with the salt tank, the second delivery channel communicates the liquid storage container with the salt suction channel, and the second delivery channel communicates with the suction The intersection point of the salt channel is located at the water inlet side of the water pump, and the switch valve is used to control the on-off state of the first delivery channel and the second delivery channel.

In one embodiment, the resin tank has a first port and a second port, and the water system of the water softener further includes a drainage channel and a fourth control valve arranged in the drainage channel, and the drainage channel is connected to the The first port is connected, the confluence channel is connected with the second port, and the fourth control valve is used to open or close the drainage channel.

In one of the embodiments, the water system of the water softener has a water injection mode, and in the water injection mode, both the first control valve and the second control valve are in an open state, and the third control valve, Both the fourth control valve and the water pump are in a closed state, and the first water inlet channel, the water injection channel and the salt tank are sequentially connected to form a water injection channel.

In one of the embodiments, the water system of the water softener has a salt-dissolving mode, and in the salt-dissolving mode, the second control valve, the third control valve and the water pump are all open, so Both the first control valve and the fourth control valve are in the closed state, the salt tank, the salt suction channel, the confluence channel, the connecting channel, the first water inlet channel, the water injection channel and the salt tanks are sequentially connected to form a circulating dissolved salt circuit.

In one of the embodiments, the water system of the water softener has a recoil mode, and in the recoil mode, the first control valve, the third control valve and the fourth control valve are all open state, the second control valve and the water pump are both in the closed state, and the first water inlet channel, the connecting channel, the confluence channel, the resin tank and the drainage channel are connected in sequence to form a backwash water channel .

In one of the embodiments, the water system of the water softener has a regeneration mode, and in the regeneration mode, the first control valve, the fourth control valve and the water pump are all open, and the first Both the second control valve and the third control valve are in the closed state, and the salt tank, the salt suction channel, the first water inlet channel, the confluence channel, the resin tank and the drainage channel are connected in sequence Create regenerated waterways.

In one of the embodiments, the water system of the water softener has a backwash mode, and in the backwash mode, both the first control valve and the fourth control valve are open, and the second control valve The valve, the third control valve and the water pump are all in a closed state, and the first water inlet channel, the confluence channel, the resin tank and the drainage channel are connected in sequence to form a backwash water channel.

In one of the embodiments, the water system of the water softener further includes a second water inlet channel and a water outlet channel, the second water inlet channel communicates with the first port, and the water outlet channel communicates with the second port connected.

In one of the embodiments, the water system of the water softener has a normal operation mode, and in the normal operation mode, the water pump, the first control valve, the second control valve, the third control valve Both the valve and the fourth control valve are in a closed state, and the second water inlet channel, the resin tank and the water outlet channel are connected in sequence to form a softened water channel.

In one of the embodiments, the water system of the water softener further includes a bypass channel, and the bypass channel communicates the second water inlet channel with the water outlet channel.

The present application also proposes a control method for the waterway system of a water softener, which is used for the waterway system of a water softener as described above. The waterway system of the water softener has a normal operation mode, a water injection mode, a salt dissolution mode, and a regeneration mode. The control method of the waterway system of the water softener comprises the following steps:

Control the switching states of the water pump, the first control valve, the second control valve, the third control valve and the fourth control valve, so that the water system of the water softener is in the normal operation mode, the water injection mode, the switch between the salt-dissolving mode and the regeneration mode.

In one of the embodiments, switching is performed sequentially in the order of water injection mode, salt dissolution mode and regeneration mode;

Switching to said water filling mode includes the following steps:

Both the first control valve and the second control valve are opened, and the third control valve, the fourth control valve and the water pump are all closed, so that the first water inlet channel, the water injection channel and the salt The tanks are connected in turn to form a water injection channel;

Switching to the salt-dissolving mode includes the following steps:

Open the second control valve, the third control valve, and the water pump, and close the first control valve and the fourth control valve, so that the salt tank, salt suction channel, and confluence The channel, the connecting channel, the first water inlet channel, the water injection channel and the salt tank are sequentially connected to form a circulating dissolved salt channel;

Switching to said regenerative mode includes the steps of:

Open the first control valve, the fourth control valve and the water pump, and close the second control valve and the third control valve, so that the salt tank and the salt suction channel , the first water inlet channel, the confluence channel, the resin tank and the drainage channel are connected in sequence to form a regeneration waterway.

In one of the embodiments, the water system of the water softener further includes a recoil mode, and the control method of the water system of the water softener further includes switching to to said recoil mode;

Switching to the recoil mode includes the following steps:

Open the first control valve, the third control valve and the fourth control valve, close the second control valve and the water pump, the first water inlet channel, the connecting channel , the confluence channel, the resin tank and the drainage channel are connected in sequence to form a backwash waterway.

In one of the embodiments, the water system of the water softener further includes a backwash mode, and the method for controlling the water system of the water softener further includes switching to the backwash mode after the regeneration mode is completed, switching to the The backwash mode described includes the following steps:

Both the first control valve and the fourth control valve are opened, the second control valve, the third control valve and the water pump are all closed, the first water inlet channel, the confluence channel , the resin tank and the drainage channel are sequentially connected to form a backwashing waterway.

In one of the embodiments, switching the water system of the water softener to the normal operation mode includes the following steps:

The water pump, the first control valve, the second control valve, the third control valve and the fourth control valve are all closed, so that the second water inlet channel, the resin tank and the water outlet channel are connected in sequence Form a softened waterway.

The present application also proposes a water softener, including the above-mentioned waterway system of the water softener.

In the technical solution of the present application, a water pump is set in the salt suction channel, and the brine in the brine tank is pumped out by the water pump. When the speed of the water pump is constant, the liquid flow rate in the salt suction channel remains stable; The flow limiting member restricts the liquid flow rate of the first water inlet channel through the flow limiting member, so that the liquid flow output from the water outlet end of the first flow limiting member remains stable without being affected by the tap water pressure at the water inlet; In this way, the concentration and flow rate of the regeneration liquid formed after mixing the salt water transported by the salt suction channel and the tap water transported by the first water inlet channel remain stable, and the regeneration liquid will not be affected by changes in tap water pressure, thereby improving the stability of regeneration performance .

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to the structures shown in these drawings without creative effort.

Fig. 1 is the structural representation of water softener in the prior art;

Fig. 2 is the schematic diagram of the water circuit of the water softener in the salt absorption (regeneration) mode in the prior art;

Fig. 3 is the schematic structural view of an embodiment of the waterway system of the water softener of the present application;

Fig. 4 is a waterway schematic diagram of the waterway system of the water softener in Fig. 3 in normal operation mode;

Fig. 5 is a waterway schematic diagram of the waterway system of the water softener in Fig. 3 in the water injection mode;

Fig. 6 is a schematic diagram of the waterway of the waterway system of the water softener in Fig. 3 in the salt-dissolving mode;

Fig. 7 is a schematic diagram of the waterway of the waterway system of the water softener in Fig. 3 in the recoil mode;

Fig. 8 is a schematic diagram of the waterway of the waterway system of the water softener in Fig. 3 when it is in regeneration mode;

Fig. 9 is a schematic diagram of the waterway of the waterway system of the water softener in Fig. 3 in the backwash mode;

Fig. 10 is a brief waterway schematic diagram of the waterway system of the water softener in Fig. 3 in normal operation mode;

Fig. 11 is a brief waterway schematic diagram of the waterway system of the water softener in Fig. 3 in the direct water supply mode;

Fig. 12 is a schematic diagram of the waterway in the salt-dissolving mode of another embodiment of the waterway system of the water softener;

Fig. 13 is a schematic diagram of the waterway in the regeneration mode of another embodiment of the waterway system of the water softener;

Fig. 14 is a schematic flowchart of the first embodiment of the method for controlling the waterway system of the water softener of the present application;

Fig. 15 is a schematic flowchart of the second embodiment of the control method of the water system of the water softener of the present application;

FIG. 16 is a schematic flowchart of a third embodiment of a method for controlling a waterway system of a water softener according to the present application;

Fig. 17 is a schematic flowchart of the fourth embodiment of the control method of the water system of the water softener of the present application;

FIG. 18 is a schematic flow chart of a fifth embodiment of a method for controlling a water system of a water softener according to the present application.

Explanation of reference numbers:

label name label name a water intake 4 grain of salt b Shuikou 5 ion exchange resin c drain 6 Resin tank water inlet 1 valve head 7 resin tank outlet 2 salt tank 8 Ejector 3 resin tank the the A water intake 20 water injection channel B Shuikou twenty one Second control valve C drain twenty two connection channel 11 salt tank twenty three third control valve 12 resin tank twenty four Liquid storage container 121 first port 25 first conveying channel 122 second port 26 Second delivery channel 13 salt channel 27 drainage channel 14 first water inlet channel 28 Fourth control valve 15 confluence channel 29 Second water inlet channel 16 water pump 30 Outlet channel 17 Current limiter 31 bypass channel 18 One-way valve 32 grain of salt 19 first control valve 33 ion exchange resin

The realization, functional features and advantages of the present application will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present application, the directional indication is only used to explain the relationship between the components in a certain posture. If the specific posture changes, the directional indication will also change accordingly.

In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes, and cannot be interpreted as indications or hints Its relative importance or implicitly indicates the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, if "and/or" or "and/or" appears throughout the text, its meaning includes three parallel plans, taking "A and/or B" as an example, including plan A, or plan B, or A and B is a solution that is satisfied at the same time. In addition, the technical solutions of the various embodiments can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist , nor within the scope of protection required by the present application.

Water softeners generally use ion exchange resin technology to remove calcium and magnesium ions in water. After the ion exchange resin is saturated with calcium and magnesium ions, it is regenerated by salt solution. Taking Na-type ion exchange resin as an example, after the adsorption of calcium and magnesium ions reaches saturation, sodium chloride solution is generally used for regeneration. Among them, the softening and regeneration process specifically involves the following reactions:

Softening: 2R-SO ₃ Na+Ca ²⁺ →(R-SO ₃ ) ₂ Ca+2Na ⁺

Regeneration: (R-SO ₃ ) ₂ Ca+2Na ⁺ → 2R-SO ₃ Na+Ca ²⁺

Please refer to FIG. 1 , which shows a schematic diagram of a waterway system of a water softener in the prior art. Existing water softeners generally include a valve head 1, a salt tank 2 and a resin tank 3. Salt grains 4 (such as sodium chloride particles) are housed in the salt tank 2, ion exchange resin 5 is housed in the resin tank 3, and the valve head 1 and resin The tank 3 is connected, and the water inlet a, the water outlet b, the drain c and the salt tank 2 are all connected to the resin tank 3 via the valve head 1 . Among them, the valve head 1 constitutes the core component of the water system of the water softener. The water flow direction is switched and the water circuit is turned on and off through the valve head 1, so that the water softener can realize normal operation, water injection + salt dissolution, salt absorption (regeneration), backwashing, Recoil, forward and other functions.

Existing water softeners generally include normal operation mode, water injection+salt dissolution mode, salt absorption (regeneration) mode, backwash mode, backwash mode and positive flush mode. In order to facilitate understanding, the water flow direction of the existing water softener under the above-mentioned several modes will be briefly described below.

In normal operation mode, the tap water flows from the water inlet a to the resin tank water inlet 6, and then enters the resin tank 3. The ion exchange resin 5 in the resin tank 3 absorbs calcium and magnesium ions in the tap water to obtain softened water, and the softened water passes through the resin tank. The tank water outlet 7 flows to the user water outlet b.

In the water injection + salt-dissolving mode, tap water flows from the water inlet a to the salt tank 2, and the salt particles 4 in the salt tank 2 contact the water and form saturated brine or concentrated brine after long-term immersion.

Salt absorption (regeneration) mode, after refilling + dissolving salt is completed, the valve head 1 is switched through the water circuit, powered by tap water, sucks out the saturated brine dissolved in the salt tank 2 through the Venturi effect of the ejector 8, and mixes it with tap water Afterwards, it is diluted into concentrated brine and enters the resin tank 3, and the concentrated brine contacts with the ion exchange resin 5 in the resin tank 3 for regeneration.

In backwash mode, when the brine in the brine tank 2 is sucked out, only tap water enters the resin tank 3 to wash away the remaining brine.

In recoil mode, the tap water flows through the water inlet a to the resin tank outlet 7, then enters the resin tank 3, and then flows from the resin tank water inlet 6 to the drain c. Wherein, the recoil mode can include recoil before regeneration and recoil after regeneration, and the recoil before regeneration is used to loosen the ion exchange resin 5 compressed during normal operation, so as to improve the contact efficiency of brine and ion exchange resin 5 during regeneration , Backwashing after regeneration can flush out the residual brine. The difference between it and backwashing lies in the amount of water, and the flow rate required for backwashing is larger.

In positive flushing mode, the tap water flows through the water inlet a to the resin tank water inlet 6, then enters the resin tank 3, and then flows from the resin tank water outlet 7 to the drain c, and is generally rinsed after regeneration to wash away the regenerated residual brine.

Please refer to FIG. 2 , which shows a schematic water circuit diagram of a water softener in the prior art in a salt absorption (regeneration) mode. During regeneration, tap water is used as power, and the saturated brine dissolved in the salt tank 2 is sucked out through the Venturi effect of the ejector 8, and the brine is mixed with tap water to generate concentrated brine and enter the resin tank 3 for regeneration. The whole regeneration power adopts tap water pressure. When the tap water pressure changes, the regeneration performance will have a large deviation, making the regeneration performance less stable. Moreover, the ejector structure is used for regeneration. Due to the physical structure characteristics of the ejector 8, various parameters during regeneration cannot be controlled and adjusted in real time: such as brine concentration during regeneration, regeneration flow rate, etc.; in addition, when the water softener requires very small regeneration When the flow rate is high, the physical size of the small holes of the ejector 8 will be too small, which will make the production more difficult and the size difficult to control. The lower limit of performance is too high, and the cost is also high. In order to solve the above problems, the present application proposes a new waterway system of a water softener and a water softener.

The present application proposes a waterway system of a water softener.

Please refer to Fig. 3, in an embodiment of the present application, the water system of the water softener includes a salt tank 11, a resin tank 12, a salt suction channel 13, a first water inlet channel 14, a confluence channel 15, a water pump 16 and a flow limiting member 17. Wherein, the water inlet end of the salt absorption channel 13 communicates with the salt tank 11, the water outlet end of the salt absorption channel 13 merges with the water outlet end of the first water inlet channel 14 and connects with the first water inlet channel 14 via the confluence channel 15 The resin tank 12 is communicated; the water pump 16 is arranged in the salt suction channel 13, and the water pump 16 is used to extract the liquid in the salt tank 11 and flow along the salt suction channel 13; A member 17 is provided in the first water inlet channel 14 , and the flow restricting member 17 is used to limit the liquid flow delivered by the first water inlet channel 14 .

Specifically, the salt box 11 is filled with salt particles 32 (such as sodium chloride), and the resin tank 12 is filled with ion exchange resin 33 . The salt particles 32 in the salt tank 11 can be dissolved in advance through procedures such as water injection and salt dissolution to form saturated brine or concentrated brine. In the regeneration mode, the water pump 16 is turned on, and the saturated brine or concentrated brine in the salt tank 11 is pumped out by the water pump 16 and transported to the confluence channel 15 through the salt suction channel 13. At the same time, the tap water passes through the water inlet A through the first The water inlet channel 14 is transported to the confluence channel 15, and tap water and brine are mixed in the confluence channel 15 to form a regeneration liquid, which is transported to the resin tank 12 through the confluence channel 15, and the regeneration liquid contacts the ion exchange resin 33 in the resin tank 12 to The ion exchange resin 33 is regenerated to restore performance. In addition, when the water pump 16 is turned off, tap water can also enter the resin tank 12 through the first water inlet channel 14 and the confluence channel 15 to realize the backwash (slow wash) function.

In the technical solution of the present application, a water pump 16 is provided in the salt suction channel 13, and the brine in the brine tank 11 is pumped out with the water pump 16 as power. When the speed of the water pump 16 is constant, the liquid flow rate in the salt suction channel 13 remains stable; and The first water inlet channel 14 is provided with a restrictor 17, and the liquid flow of the first water inlet channel 14 is limited by the restrictor 17, so that the liquid flow output from the water outlet of the first restrictor 17 remains stable without It will be affected by the water pressure of the tap water at the water inlet A; in this way, the concentration and flow rate of the regeneration liquid formed after the salt water delivered by the salt suction channel 13 is mixed with the tap water delivered by the first water inlet channel 14 remain stable, and the regeneration solution will not be affected by The impact of changes in tap water pressure can improve the stability of regeneration performance.

In order to realize the adjustable concentration of the regeneration liquid to meet different usage requirements, in one embodiment, the water pump 16 is an adjustable-speed water pump 16 . Specifically, the regeneration liquid refers to the brine formed by mixing the brine delivered by the salt suction channel 13 and the tap water delivered by the first water inlet channel 14 . Concentration of regeneration solution=(brine concentration of brine tank 11*water supply flow of water pump 16)/(tap water flow after passing through restrictor 17+water supply flow of water pump 16). Since the brine concentration in the salt tank 11 remains constant (generally saturated brine concentration), the tap water flow through the flow limiting member 17 remains constant, and the water pump 16 is an adjustable-speed water pump 16 with self-priming and speed-regulating functions. When the rotating speed of the water pump 16 is adjusted, the water supply flow rate of the water pump 16 can be adjusted, thereby realizing the adjustment of the concentration of the regeneration liquid. In addition, since the flow rate of the water pump 16 is adjustable, the flow rate of the regeneration liquid can be adjusted, and the regeneration effect can be adjusted. By adjusting the regeneration effect, the salt consumption, that is, the frequency of salt addition and regeneration, and the size of the salt tank 11 can be controlled, and then different product forms can be determined to meet different needs. Wherein, the regeneration effect refers to the salt effect and regeneration degree that can be achieved by using different salt consumption.

Salt consumption = (the amount of salt used in this regeneration g) / filled resin volume L;

Salt effect = (water volume L*raw water hardness mg/L)/salt volume used for regeneration g;

Regeneration degree = (water volume L*raw water hardness mg/L when the outlet water hardness reaches the set value after regeneration)/theoretical total adsorption capacity of filled resin mg;

There are many types of speed-adjustable water pumps 16, as long as the self-priming and speed-regulating functions can be realized. In one embodiment, the water pump 16 is any one of a diaphragm pump, a vane pump and a plunger pump.

In order to realize the intelligent control of the waterway system of the water softener, in one embodiment, the waterway system of the water softener includes a softening waterway, a water injection waterway, a dissolved salt waterway, a backwash waterway, a regeneration waterway, a backwash waterway and a control device , the control device is used to control the waterway system of the water softener to switch among the waterways.

Specifically, the demineralized water channel is used to deliver raw water to the resin tank 12 for softening, so as to provide demineralized water for users. The water injection channel can be used to inject a certain amount of water into the salt tank 11 . The salt-dissolving circuit can be used to draw out the brine in the brine tank 11 and then return it to the brine tank 11, so as to realize cyclic dynamic salt dissolution. The backflushing waterway can loosen the ion exchange resin 33 in the resin tank 12 before regeneration, and can also flush the residual brine in the resin tank 12 after regeneration. The regeneration waterway can be used to extract the brine in the brine tank 11 and transport it to the resin tank 12 for ion exchange regeneration. The backwashing water circuit can be used to flush out the brine remaining in the resin tank 12 . The control device has a built-in preset program. In actual application, the control device judges which mode the water softener needs to enter according to the preset program, and then switches the water system of the water softener to the water channel in the corresponding mode. The whole process runs automatically, which can Effectively improve the operating efficiency and reliability of the water softener. For example, in the water injection mode, inject a certain amount of water into the brine tank 11 through the water injection channel, and judge that the water injection is completed when the amount of water injected into the brine tank 11 reaches the preset value. At this time, the control device controls the water system of the water softener Switch from the water injection channel to the dissolved salt circuit to enter the dissolved salt mode.

Usually, the water inlet A of the first water inlet channel 14 is connected to the tap water pipe. Since the tap water pressure at the water inlet A is relatively high, the water flow rate in the first water inlet channel 14 is relatively high. The flow rate also has certain requirements, so the flow limiting element 17 needs to be used to limit the flow. In one of the embodiments, the restrictor 17 has a restrictor hole for the liquid to pass through. When the liquid passes through the restrictor hole, the flow rate of the liquid passing through the restrictor hole can be limited. It can be understood that the restrictor The pores are generally flow-restricting pores with a relatively small pore size. Wherein, the pore size of the restricting hole is fixed or the pore size of the restricting hole is adjustable. When the aperture size of the flow restriction hole is fixed, the liquid flow through the flow restriction hole remains stable. When the pore size of the flow limiting hole is adjustable, the flow rate of the tap water passing through the flow limiting member 17 can be adjusted by adjusting the pore size of the flow limiting hole, and then the concentration of the regeneration solution, the flow rate of the regeneration solution and the regeneration effect can be adjusted.

In one of the embodiments, the salt suction channel 13 is provided with a one-way valve 18, the one-way valve 18 is located on the water outlet side of the water pump 16, and the one-way valve 18 is used to limit the flow of liquid towards the water pump 16. reflow. By setting the one-way valve 18, the solution in the resin tank 12 can be prevented from entering the water pump 16 through the confluence channel 15 and the salt suction channel 13, and then being poured back into the salt tank 11, so as to ensure the operation reliability of the entire waterway system.

In one of the embodiments, the water system of the water softener further includes a first control valve 19 arranged in the first water inlet channel 14, and the first control valve 19 is used to open or close the first water inlet channel. Water channel 14. Wherein, the first control valve 19 can be a solenoid valve, an electric ball valve, a mechanical ball valve, a tile valve, etc., as long as it can realize the conduction and cutoff of the waterway. The regeneration mode can specifically include the first regeneration mode and the second regeneration mode. In the first regeneration mode, the first control valve 19 is opened, the first water inlet channel 14 is in a conduction state, and the water pump 16 pumps out the brine in the brine tank 11 to The salt suction channel 13 is mixed with the tap water output from the first water inlet channel 14 to form a regeneration liquid, which is transported to the resin tank 12 through the confluence channel 15 for regeneration; in the second regeneration mode, the first control valve 19 is closed, The first water inlet channel 14 is in a cut-off state, and the water pump 16 draws out the brine in the salt tank 11 and delivers it to the resin tank 12 through the salt suction channel 13 and the confluence channel 15 for regeneration.

Optionally, the confluence channel 15 can also be provided with a flowmeter and/or a salinity meter, the flow meter can detect the flow of liquid passing through the confluence channel 15, and the salinity meter can measure the salt concentration of the liquid passing through the confluence channel 15. Detection, in this way, in the regeneration mode, the flow rate and/or concentration of the regeneration liquid passing through the confluence channel 15 can be monitored in real time.

Usually, there is a certain amount of solid salt grains 32 stored in the salt tank 11. Before regeneration mode, a certain amount of water needs to be injected into the salt tank 11 to dissolve the salt grains 32 in the salt tank 11 to form brine. In order to be able to freely switch between the water injection mode and the regeneration mode, in one embodiment, the water system of the water softener further includes a water injection channel 20 and a second control valve 21 provided in the water injection channel 20, the water injection The passage 20 communicates the first water inlet passage 14 with the brine tank 11 , and the second control valve 21 is used to open or close the water injection passage 20 . Specifically, in the water injection mode, both the first control valve 19 and the second control valve 21 are opened, and at this moment, the first water inlet channel 14 communicates with the water injection channel 20, and tap water is injected into the In the salt tank 11, the salt grains 32 in the salt tank 11 can be dissolved to form brine. In the regeneration mode, the second control valve 21 is closed, the water injection channel 20 is in an isolated state, and then the water pump 16 is turned on to pump out the brine in the salt tank 11 .

In the water injection mode, in order to quickly inject a certain amount of water into the salt tank 11, optionally, the intersection point of the water injection channel 20 and the first water inlet channel 14 is located upstream of the restrictor 17 and at the end of the first control valve 19. between downstream. When both the first control valve 19 and the second control valve 21 are open, the tap water in the first water inlet channel 14 can directly flow into the water injection channel 20 without passing through the restrictor 17, and the water flow rate is relatively large at this time, which can improve the water injection efficiency . In the regeneration mode or the backwashing mode, the second control valve 21 is closed, and the tap water in the first water inlet channel 14 is output to the confluence channel 15 after passing through the restrictor 17 .

In addition, traditional water softeners usually dissolve salt statically. When the salt tank 11 is filled with water, the salt particles 32 are soaked and dissolved for a long time to form saturated brine, which takes a long time to dissolve salt. In order to speed up the speed of salt dissolution, in one embodiment, the water system of the water softener further includes a connecting channel 22 and a third control valve 23 located in the connecting channel 22, and the connecting channel 22 connects the first The water inlet channel 14 communicates with the confluence channel 15 , and the junction of the connecting channel 22 and the first water inlet channel 14 is located between the upstream of the restrictor 17 and the downstream of the first control valve 19 , the third control valve 23 is used to open or close the connecting channel 22 .

Specifically, as shown in Figure 6, when the water injection is completed, the water pump 16 is turned on, the second control valve 21 and the third control valve 23 are both opened, and the water outlet of the brine tank 11, the salt suction channel 13, the confluence channel 15, the connection The channel 22, the first water inlet channel 14, the water injection channel 20 and the water inlet A of the brine tank 11 are connected in sequence to form a circulation loop, and the brine in the brine tank 11 can flow along the circulation loop, so that the cyclic dynamic salt dissolution can be realized, so that The brine in the salt tank 11 can quickly reach a preset concentration, which can effectively improve the efficiency of salt dissolution. In addition, in the backflush mode, the first water inlet channel 14, the connecting channel 22, the confluence channel 15 and the resin tank 12 can also be communicated by switching the water channel, so as to input tap water into the resin tank 12 to flush the ion resin.

In addition, as shown in Figure 1, after the water injection is completed, the traditional water softener dissolves the salt particles 4 in the salt tank 2 to form brine with a certain concentration through long-term soaking. The granules 4 will continue to dissolve during the soaking process. Only when the salt water in the salt tank 2 reaches the saturation concentration or the salt 4 in the salt tank 2 dissolves completely, can the concentration of the brine be stable. Under normal circumstances, the regeneration process does not require saturated brine, in order to obtain brine with a stable concentration and reduce salt consumption. Please refer to Figure 12 and Figure 13, in one of the embodiments, the water system of the water softener also includes a liquid storage container 24, a first delivery channel 25, a second delivery channel 26 and a switch valve, the salt suction channel 13 The brine tank 11 is communicated with the liquid storage container 24, the first transfer passage 25 is connected with the liquid storage container 24 with the brine tank 11, and the second transfer passage 26 is connected with the liquid storage container 24 communicates with the salt absorption channel 13, the intersection point of the second delivery channel 26 and the salt absorption channel 13 is located at the water inlet side of the water pump 16, and the switch valve is used for the first delivery channel 25 and the on-off state of the second conveying channel 26 are controlled.

Specifically, both the first delivery channel 25 and the second delivery channel 26 can be turned on and off by a switch valve, wherein the switch valve can include two control valves respectively arranged on the first delivery channel 25 and the second delivery channel 26, Or the switch valve can also adopt a two-position three-way valve. After the water injection is completed, start the water pump 16 to enter the salt-dissolving mode. In the salt-dissolving mode, the first delivery channel 25 is in the conduction state, the second delivery channel 26 is in the cut-off state, and the brine in the salt tank 11 enters through the salt suction channel 13 The liquid storage container 24 then flows back to the salt tank 11 via the first delivery channel 25 to realize cyclic dynamic salt dissolution. When the brine in the brine tank 11 reaches a preset concentration, the brine in the brine tank 11 is pumped out into the liquid storage container 24 for storage by the water pump 16, thereby ensuring that the brine concentration in the liquid storage container 24 is a preset concentration and maintained Stable, it should be noted that this preset concentration can be less than or equal to the saturated salt concentration. In the regeneration mode, the first delivery channel 25 is in the cut-off state, the second delivery channel 26 is in the conduction state, the water pump 16 is started, and the brine with a preset concentration in the liquid storage container 24 is drawn out and passed through the second delivery channel 26 and the brine suction. The channel 13 is transported to the resin tank 12 and contacts with the ion exchange resin 33 in the resin tank 12 to achieve regeneration. With this solution, the step of mixing with the tap water delivered by the first water inlet channel 14 can be omitted.

In the regeneration mode, the backwash mode and the backwash mode, it is necessary to discharge the liquid after contacting the ion exchange resin 33 of the resin tank 12. In order to achieve smooth drainage, on the basis of the above-mentioned embodiments, the resin tank 12 With a first port 121 and a second port 122, the water system of the water softener also includes a drainage channel 27 and a fourth control valve 28 located in the drainage channel 27, the drainage channel 27 and the first port 121 The confluence channel 15 communicates with the second port 122 , and the fourth control valve 28 is used to open or close the drain channel 27 . Specifically, in the regeneration mode, the backflush mode and the backwash mode, when drainage is required, the fourth control valve 28 is opened, the drainage channel 27 is in a conductive state, and the liquid in the resin tank 12 can enter the drainage through the second port 122. channel 27, and then transported to the drain port C by the drain channel 27 for discharge.

In the above embodiment, the first control valve 19, the second control valve 21, the third control valve 23 and the fourth control valve 28 can be electromagnetic valves, electric ball valves, mechanical ball valves, tile valves, etc., as long as the waterway can be realized on and off. By controlling the switching states of the water pump 16, the first control valve 19, the second control valve 21, the third control valve 23 and the fourth control valve 28, the water system of the water softener can be switched between multiple modes.

As shown in Figure 5, the waterway system of the water softener has a water injection mode, and in the water injection mode, the first control valve 19 and the second control valve 21 are both in an open state, and the third control valve 23. Both the fourth control valve 28 and the water pump 16 are closed, and the first water inlet channel 14, the water injection channel 20 and the salt tank 11 are connected in sequence to form a water injection channel.

Specifically, in the water injection mode, the water pump 16 is turned off, the first control valve 19 and the second control valve 21 are both opened, and the third control valve 23 and the fourth control valve 28 are both closed. Tap water enters the first water inlet channel 14 through the water inlet A, and then is delivered to the water injection channel 20 through the main channel of the first water inlet channel 14, and is injected into the salt tank 11 through the water injection channel 20, so as to be compatible with the salt particles in the salt tank 11. 32 mixed.

As shown in Figure 6, the water system of the water softener has a salt-dissolving mode, and in the salt-dissolving mode, the second control valve 21, the third control valve 23 and the water pump 16 are all in an open state , the first control valve 19 and the fourth control valve 28 are all in the closed state, the salt tank 11, the salt suction channel 13, the confluence channel 15, the connecting channel 22, the first The water inlet channel 14 , the water injection channel 20 and the salt tank 11 are sequentially connected to form a circulating dissolved salt circuit.

Specifically, in the salt-dissolving mode, the water pump 16 pumps out the brine in the brine tank 11, and then delivers it to the brine tank 11 through the salt suction channel 13, the confluence channel 15, the connecting channel 22, the first water inlet channel 14, and the water injection channel 20. Inside; this cycle goes on and on to realize dynamic salt dissolution. Compared with the traditional static soaking and dissolving salt, the technical solution of the present application dissolves the salt through the dynamic circulation flow, and can be dissolved to a saturated state even when the volume of the salt is less than that of water, so it can realize energy saving to a certain extent Salt.

As shown in FIG. 7 , the water system of the water softener has a recoil mode, and in the recoil mode, the first control valve 19 , the third control valve 23 and the fourth control valve 28 are all is in the open state, the second control valve 21 and the water pump 16 are in the closed state, the first water inlet channel 14, the connecting channel 22, the confluence channel 15, the resin tank 12 and the The drainage channels 27 are connected in sequence to form a backwash waterway.

Specifically, in the recoil mode, tap water enters the first water inlet channel 14 through the water inlet A, and then is sent to the connecting channel 22 through the first water inlet channel 14, and then passes through the connecting channel 22, the confluence channel 15 and the second port. 122 into the resin tank 12, and finally output to the drain C through the first port 121 and the drain channel 27 for discharge. Wherein, the recoil mode may include recoil before regeneration and recoil after regeneration. The recoil before regeneration is used to loosen the compressed ion exchange resin 33 during normal operation, so as to improve the contact efficiency between brine and ion exchange resin 33 during regeneration, and the recoil after regeneration can flush out the residual brine.

As shown in Figure 8, the water system of the water softener has a regeneration mode, and in the regeneration mode, the first control valve 19, the fourth control valve 28 and the water pump 16 are all in an open state, so Both the second control valve 21 and the third control valve 23 are in the closed state, the salt tank 11, the salt suction channel 13, the first water inlet channel 14, the confluence channel 15, the resin The tank 12 and the drainage channel 27 are sequentially connected to form a regeneration water channel.

Specifically, in the regeneration mode, the water pump 16 pumps out the brine in the brine tank 11 and delivers it to the confluence channel 15 through the salt suction channel 13, and the tap water is delivered to the confluence channel 15 through the water inlet A and the first water inlet channel 14, and the brine and The tap water is mixed to form a regenerated liquid, which is transported to the resin tank 12 through the confluence channel 15 , and is regenerated by contacting with the ion exchange resin 33 in the resin tank 12 , and the regenerated waste water is transported to the drain C through the drain channel 27 . It should be noted that, in the regeneration mode, the first control valve 19 may also be closed to directly pump the brine in the brine tank 11 to the resin tank 12 for regeneration without mixing with tap water.

As shown in Figure 9, the water system of the water softener has a backwash mode, and in the backwash mode, the first control valve 19 and the fourth control valve 28 are both open, and the second The control valve 21, the third control valve 23 and the water pump 16 are all in the closed state, and the first water inlet channel 14, the confluence channel 15, the resin tank 12 and the drainage channel 27 are connected in sequence Form a backwash waterway.

Specifically, in the backwashing mode, tap water is delivered to the confluence channel 15 through the water inlet A and the first water inlet channel 14, then delivered to the resin tank 12 through the confluence channel 15, and finally delivered to the drain port C through the drain channel 27, to Rinse off the brine remaining after regeneration.

In one of the embodiments, the water system of the water softener further includes a second water inlet channel 29 and a water outlet channel 30, the second water inlet channel 29 communicates with the first port 121, and the water outlet channel 30 communicates with the first port 121. The second port 122 communicates.

The water system of the water softener has a normal operation mode, and in the normal operation mode, the water pump, the first control valve, the second control valve, the third control valve and the fourth control valve The valves are all in the closed state, and the second water inlet channel, the resin tank and the water outlet channel are connected in sequence to form a softened water channel. In the normal operation mode, tap water (raw water) enters the resin tank 12 through the second water inlet channel 29 and the first port 121, and the raw water contacts the ion exchange resin 33 in the resin tank 12, and the ion exchange resin 33 absorbs the raw water The calcium and magnesium ions in the water are softened water, and the softened water is delivered to the user's water port B through the second port 122 and the water outlet channel 30, where the water port B can be used to connect to a faucet or other water equipment.

In addition, in some occasions that do not require high water quality, users do not need to use softened water. In order to provide users with unsoftened raw water more conveniently, in one of the embodiments, the water system of the water softener A bypass channel 31 is also included, and the bypass channel 31 communicates the second water inlet channel 29 with the water outlet channel 30 . In this way, the raw water delivered by the second water inlet channel 29 enters into the water outlet channel 30 through the bypass channel 31 , and then is delivered to the water outlet B of the user through the water outlet channel 30 .

Specifically, as shown in Figure 10, in the normal operation mode, the water inlet A, the second water inlet channel 29, the resin tank 12, the water outlet channel 30 and the water outlet B are connected to form a softening water channel; as shown in Figure 11, in the direct In the water supply mode, the water inlet A, the second water inlet channel 29 , the bypass channel 31 , the water outlet channel 30 and the water outlet B are connected to form a direct water supply channel. The waterway system of the water softener may include a switching valve (not shown) located at the bypass channel 31, through which the switch between the softened waterway and the direct water supply waterway can be realized.

Please refer to FIG. 14 to FIG. 18 , the present application also proposes a method for controlling the water system of the water softener.

Please refer to Figure 14. In the first embodiment, the water system of the water softener has a normal operation mode, a water injection mode, a salt-dissolving mode and a regeneration mode, and the control method of the water system of the water softener includes the following steps:

Control the switching states of the water pump 16, the first control valve 19, the second control valve 21, the third control valve 23 and the fourth control valve 28, so that the water system of the water softener is in the normal operation mode, the Switch between the water injection mode, the salt-dissolving mode and the regeneration mode.

Specifically, in the normal operation mode, the tap water is delivered to the resin tank 12, and the ion exchange resin 33 in the resin tank 12 absorbs calcium and magnesium ions in the tap water to obtain softened water, and the softened water is delivered to the user's water outlet to provide users with soften the water. When the calcium and magnesium ions adsorbed by the ion exchange resin 33 reach a certain level, the ion exchange resin 33 can no longer achieve the softening function or the softening function cannot achieve the preset effect, and the ion exchange resin 33 needs to be regenerated. Before regeneration, it is necessary to switch to the water injection mode to inject water into the salt tank 11; when the amount of water in the salt tank 11 reaches the preset value, switch to the salt-dissolving mode, and perform circular dynamic salt dissolution through the salt-dissolving mode, so that the salt tank The salt grains in 11 are dissolved to a preset concentration (such as saturated brine concentration); and then switch to the regeneration mode to extract the brine in the salt box 11 into the resin tank 12 to realize the regeneration of the ion exchange resin 33 . It can be understood that, in some embodiments, in order to achieve a better regeneration effect, the water system of the water softener can also include a recoil mode. After the salt-dissolving mode is completed, first switch to the recoil mode. After the ion exchange resin 33 in the resin tank 12 is flushed and loosened, switch to the regeneration mode. In addition, in some embodiments, the water system of the water softener can also include a backwash mode. After the regeneration mode is completed, switch to the backwash mode, and the residual brine in the resin tank 12 can be rinsed clean through the backwash mode to ensure The demineralized water discharged through the resin tank 12 during normal operation mode has no residual brine in it. In addition, it should be noted that in actual application, the water system of the water softener can be switched to any mode according to actual needs, and it does not need to be switched in a certain order. For example, after the water injection mode is completed, the salt can also be dissolved by static immersion, and then directly switched to the regeneration mode. At this time, there is no need to switch to the salt dissolved mode first.

Please refer to FIG. 15 , in the second embodiment, switching is performed sequentially in the order of the water injection mode, the dissolved salt mode and the regeneration mode;

Switching to said water filling mode includes the following steps:

Both the first control valve 19 and the second control valve 21 are opened, and the third control valve 23, the fourth control valve 28 and the water pump 16 are all closed, so that the first water inlet channel 14. The water injection channel 20 and the salt tank 11 are sequentially connected to form a water injection channel;

Switching to the salt-dissolving mode includes the following steps:

The second control valve 21, the third control valve 23 and the water pump 16 are all opened, and the first control valve 19 and the fourth control valve 28 are all closed, so that the brine tank 11, suction The salt channel 13, the confluence channel 15, the connecting channel 22, the first water inlet channel 14, the water injection channel 20 and the salt tank 11 are sequentially connected to form a circulating dissolved salt channel;

Switching to said regenerative mode includes the steps of:

The first control valve 19, the fourth control valve 28 and the water pump 16 are all opened, and the second control valve 21 and the third control valve 23 are all closed, so that the brine tank 11 , the salt absorption channel 13 , the first water inlet channel 14 , the confluence channel 15 , the resin tank 12 and the drainage channel 27 are sequentially connected to form a regeneration waterway.

Specifically, both the first control valve 19 and the second control valve 21 are opened first, and the third control valve 23, the fourth control valve 28 and the water pump 16 are all closed. Fill the tank 11 with water; when the water volume in the salt tank 11 reaches the preset value, open the second control valve 21, the third control valve 23 and the water pump 16, and close the first control valve 19 and the fourth control valve 28 , switch to the salt-dissolving mode at this time, and circulate dynamic salt-dissolving through the circulating salt-dissolving circuit, so as to dissolve the salt grains in the salt tank 11 to a preset concentration (such as saturated brine concentration); then the first control valve 19, the second Both the four control valves 28 and the water pump 16 are opened, and the second control valve 21 and the third control valve 23 are all closed. At this time, switch to the regeneration mode to extract the brine in the salt tank 11 into the resin tank 12 to realize ion exchange Regeneration of resin 33 .

Please refer to Fig. 16. In the third embodiment, the water system of the water softener further includes a recoil mode, and the control method of the water system of the water softener further includes entering the switch to the recoil mode before regeneration mode;

Switching to the recoil mode includes the following steps:

The first control valve 19, the third control valve 23 and the fourth control valve 28 are all opened, the second control valve 21 and the water pump 16 are all closed, and the first water inlet channel 14. The connection channel 22 , the confluence channel 15 , the resin tank 12 and the drainage channel 27 are sequentially connected to form a backwash water channel.

Specifically, after the water injection mode is completed, the first control valve 19, the third control valve 23 and the fourth control valve 28 are all opened, and the second control valve 21 and the water pump 16 are all closed, switch to the backflush mode at this time, and then discharge the high-speed water flow into the resin tank 12 through the backflush water channel, so that the ion exchange resin 33 in the resin tank 12 can be washed and loosened, so that the subsequent ion exchange efficiency Higher, thereby improving the regeneration efficiency.

Please refer to FIG. 17. In the fourth embodiment, the water system of the water softener further includes a backwash mode, and the control method of the water system of the water softener further includes switching to the backwash mode after the regeneration mode is completed. model;

Switching to the backwash mode includes the following steps:

Both the first control valve 19 and the fourth control valve 28 are opened, the second control valve 21, the third control valve 23 and the water pump 16 are all closed, and the first water inlet channel 14. The confluence channel 15, the resin tank 12 and the drainage channel 27 are sequentially connected to form a backwash water channel.

Specifically, after the regeneration mode is completed, both the first control valve 19 and the fourth control valve 28 are opened, and the second control valve 21, the third control valve 23 and the water pump 16 are all opened. Closed, switch to the backwash mode at this time, and the tap water is delivered to the resin tank 12 through the backwash water channel and then discharged, so that the residual brine in the regeneration process can be washed away.

Please refer to FIG. 18 , in the fifth embodiment, the water system of the water softener is switched sequentially according to the order of water injection mode, salt dissolving mode, backwash mode, regeneration mode and backwash mode.

In one of the embodiments, switching the water system of the water softener to the normal operation mode includes the following steps:

The water pump 16, the first control valve 19, the second control valve 21, the third control valve 23 and the fourth control valve 28 are all closed, so that the second water inlet channel 29, the resin The tank 12 and the water outlet channel 30 are sequentially connected to form a softened water channel.

Specifically, the water pump 16, the first control valve 19, the second control valve 21, the third control valve 23 and the fourth control valve 28 are all closed, and at this time switch to the normal operation mode , the tap water is delivered to the resin tank 12 through the softening water channel for softening, and then the softened water is output through the water outlet channel 30 .

It should be noted that the foregoing describes specific embodiments of this specification. Other implementations are within the scope of the following claims. In some cases, the actions or steps recited in the claims can be performed in an order different from that in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. Multitasking and parallel processing are also possible or may be advantageous in certain embodiments.

The present application also proposes a water softener, which includes a waterway system of the water softener. For the specific structure of the waterway system of the water softener, refer to the above-mentioned embodiments. Since this water softener adopts all the technical solutions of all the above-mentioned embodiments, at least All the beneficial effects brought by the technical solutions of the above embodiments will not be repeated here.

Several working modes of the water softener of the present application will be introduced in detail below in conjunction with a specific embodiment. Please refer to Fig. 3, in one of the embodiments, the water system of the water softener includes a salt tank 11, a resin tank 12, a salt suction channel 13, a first water inlet channel 14, a confluence channel 15, a water injection channel 20, a connecting channel 22, The drainage channel 27 , the second water inlet channel 29 , the water outlet channel 30 and the bypass channel 31 . Wherein, the salt tank 11 is used to store salt grains 32, the resin tank 12 is used to store the ion exchange resin 33, the resin tank 12 has a first port 121 and a second port 122, the first port 121 can be the water inlet of the resin tank 12, The second port 122 may be a water outlet of the resin tank 12 . The water inlet end of the salt absorption channel 13 communicates with the water outlet of the salt box 11 , the water outlet end of the salt absorption channel 13 merges with the water outlet end of the first water inlet channel 14 and communicates with the second port 122 of the resin tank 12 via the confluence channel 15 The salt suction channel 13 is provided with a water pump 16 and a one-way valve 18 located on the output side of the water pump 16 . The first water inlet channel 14 is provided with a restrictor 17 and a first control valve 19 . The water inlet end of the water injection channel 20 communicates with the first water inlet channel 14 , the water outlet end of the water injection channel 20 communicates with the water inlet of the brine tank 11 , and the water injection channel 20 is provided with a second control valve 21 . The connecting channel 22 communicates the first water inlet channel 14 with the confluence channel 15 , and the connecting channel 22 is provided with a third control valve 23 . The drain passage 27 communicates with the first port 121 of the resin tank 12 , and the drain passage 27 is provided with a fourth control valve 28 . The second water inlet channel 29 communicates with the first port 121 of the resin tank 12 , and the water outlet channel 30 communicates with the second port 122 of the resin tank 12 . The bypass channel 31 communicates the second water inlet channel 29 with the water outlet channel 30 .

The working process of the water softener generally includes the following procedures. The water softener is in the normal operation mode to provide softened water for the user; after the water softener runs to a certain amount of water, it enters the water injection mode to inject water into the salt tank 11; after water injection for a period of time, Start the water pump 16 to enter the dynamic salt-dissolving mode to dissolve the salt particles 32 to reach a preset concentration (such as saturated brine concentration); enter the recoil mode after the salt-dissolving is completed, so as to loosen the ion-exchange resin 33 in the resin tank 12; Enter the regeneration mode after flushing is completed, so as to transfer the regeneration liquid to the resin tank 12 to realize the regeneration of the ion resin; when the dissolved salt brine is sucked up or reach the set regeneration time, enter the backwash mode (also called slow cleaning mode) to rinse out the regenerating liquid remaining in the resin tank 12.

It should be noted that in the normal operation mode, the water softener runs to a certain amount of water generally refers to the operating water amount preset by the manufacturer in the product. If the manufacturer has a test run of 500L hardness removal rate > 90% under a certain test hardness, then set The fixed running water volume is 500L, and if the hardness of the raw water changes, by presetting the raw water hardness value in advance, the operable water volume setting can be reduced or increased proportionally (operating water volume = test hardness * test water volume / actual hardness), which can be passed through the outlet end Set up a flow meter to monitor the water flow.

The above-mentioned water softener controls the operating states of the water pump 16, the first control valve 19, the second control valve 21, the third control valve 23 and the fourth control valve 28 through the control system, so that the water softener can be operated in various functional modes. switch.

As shown in FIG. 4 , in the normal operation mode, the water pump 16 is closed, and the first control valve 19 , the second control valve 21 , the third control valve 23 and the fourth control valve 28 are all closed. Tap water enters the second water inlet channel 29 through the water inlet A, then enters the resin tank 12 through the second water inlet channel 29 and the first port 121, forms demineralized water after contacting with the ion exchange resin 33 in the resin tank 12, and demineralized water Through the second port 122 and the water outlet channel 30, it is sent to the user's water port B to provide the user with demineralized water.

As shown in FIG. 5 , in the water injection mode, the water pump 16 is closed, the first control valve 19 and the second control valve 21 are both open, and the third control valve 23 and the fourth control valve 28 are both closed. Tap water enters the first water inlet channel 14 through the water inlet A, and then is delivered to the water injection channel 20 through the main channel of the first water inlet channel 14, and is injected into the salt tank 11 through the water injection channel 20, so as to be compatible with the salt particles in the salt tank 11. 32 mixed.

As shown in FIG. 6 , in the salt-dissolving mode, the water pump 16 is turned on, the second control valve 21 and the third control valve 23 are both turned on, and the first control valve 19 and the fourth control valve 28 are both turned off. The water pump 16 pumps out the brine in the brine tank 11, and then transports it to the brine tank 11 through the salt suction channel 13, the confluence channel 15, the connecting channel 22, the first water inlet channel 14 and the water injection channel 20; in this way, the dynamic solution is realized. Salt.

As shown in FIG. 7 , in the recoil mode, the water pump 16 is closed, the first control valve 19 , the third control valve 23 and the fourth control valve 28 are all open, and the second control valve 21 is closed. Tap water enters the first water inlet channel 14 through the water inlet A, and then is sent to the connecting channel 22 through the first water inlet channel 14, and then enters the resin tank 12 through the connecting channel 22, the confluence channel 15 and the second port 122, and finally Then output to the drain C through the first port 121 and the drain channel 27 for discharge. Wherein, the recoil mode may include recoil before regeneration and recoil after regeneration.

As shown in FIG. 8 , in regeneration mode, the water pump 16 is turned on, the first control valve 19 and the fourth control valve 28 are both opened, and the second control valve 21 and the third control valve 23 are both closed. The water pump 16 pumps out the brine in the brine tank 11 and sends it to the confluence channel 15 through the salt suction channel 13, and the tap water is transported to the confluence channel 15 through the water inlet A and the first water inlet channel 14, and the brine is mixed with the tap water to form a regeneration solution through the confluence The channel 15 is transported to the resin tank 12 , and is regenerated by contacting with the ion exchange resin 33 in the resin tank 12 , and the regenerated waste water is transported to the drain C through the drain channel 27 . It should be noted that, in the regeneration mode, the first control valve 19 may also be closed to directly pump the brine in the brine tank 11 to the resin tank 12 for regeneration without mixing with tap water.

As shown in FIG. 9 , in the backwash mode, the water pump 16 is turned off, the first control valve 19 and the fourth control valve 28 are both opened, and the second control valve 21 and the third control valve 23 are both closed. The tap water is sent to the confluence channel 15 through the water inlet A and the first water inlet channel 14 , then to the resin tank 12 through the confluence channel 15 , and finally to the drain port C through the drain channel 27 to flush out the residual brine after regeneration.

The above are only preferred embodiments of the present application, and are not therefore limiting the patent scope of the present application. Under the inventive concept of the present application, the equivalent structural transformations made by using the description of the application and the contents of the accompanying drawings, or direct/indirect use All other relevant technical fields are included in the patent protection scope of the present application.

Claims (24)

A waterway system of a water softener, characterized in that it comprises: salt tank; Resin tank; A salt suction channel, a first water inlet channel and a confluence channel, the water inlet end of the salt suction channel communicates with the salt tank, the water outlet end of the salt absorption channel merges with the water outlet end of the first water inlet channel and communicating with the resin tank via the flow channel; a water pump, arranged in the salt suction channel, for pumping out the liquid in the salt tank and flowing along the salt suction channel; and The restrictor is arranged in the first water inlet channel, and is used for limiting the flow rate of the liquid transported by the first water inlet channel. The waterway system of the water softener according to claim 1, wherein the water pump is an adjustable speed water pump. The waterway system of the water softener according to claim 1, characterized in that it comprises a softening waterway, a water injection waterway, a dissolved salt waterway, a backwash waterway, a regeneration waterway, a backwash waterway and a control device, and the control device is used to control the The waterway system of the water softener described above switches between the waterways. The waterway system of a water softener according to claim 1, wherein the restrictor has a restrictor hole for liquid to pass through, and the aperture size of the restrictor hole is fixed or the aperture size of the restrictor hole can be changed. adjust. The waterway system of the water softener according to claim 1, wherein the salt suction channel is provided with a one-way valve, the one-way valve is located on the water outlet side of the water pump, and the one-way valve is used to limit the liquid Return flow towards the water pump. The waterway system of the water softener according to claim 1, further comprising a first control valve arranged in the first water inlet passage, the first control valve is used to open or close the first water inlet water channel. The waterway system of the water softener according to claim 6, further comprising a water injection channel and a second control valve arranged in the water injection channel, the water injection channel connects the first water inlet channel and the salt tank, and the second control valve is used to open or close the water injection channel. The waterway system of the water softener according to claim 7, further comprising a connecting channel and a third control valve provided in the connecting channel, the connecting channel connects the first water inlet channel and the confluence channel communication, the junction of the connecting channel and the first water inlet channel is located between the upstream of the restrictor and the downstream of the first control valve, and the third control valve is used to open or close the the connection channel described above. The waterway system of a water softener according to claim 1, further comprising a liquid storage container, a first delivery channel, a second delivery channel and a switch valve, the salt suction channel connects the salt tank to the storage The liquid container is communicated, the first delivery channel communicates the liquid storage container with the salt tank, the second delivery channel communicates the liquid storage container with the salt suction channel, and the second delivery channel communicates with the salt tank. The intersection point of the salt suction channel is located at the water inlet side of the water pump, and the switch valve is used to control the on-off state of the first delivery channel and the second delivery channel. The waterway system of the water softener according to any one of claims 1 to 9, wherein the resin tank has a first port and a second port, and the waterway system of the water softener also includes a drainage channel and a A fourth control valve of the drainage channel, the drainage channel communicates with the first port, the confluence channel communicates with the second port, and the fourth control valve is used to open or close the drainage channel. The waterway system of the water softener according to claim 10, wherein the waterway system of the water softener has a water injection mode, and in the water injection mode, both the first control valve and the second control valve are in the In the open state, the third control valve, the fourth control valve and the water pump are all in the closed state, and the first water inlet channel, the water injection channel and the brine tank are sequentially connected to form a water injection channel. The waterway system of the water softener according to claim 10, wherein the waterway system of the water softener has a salt-dissolving mode, and in the salt-dissolving mode, the second control valve and the third control valve and the water pump are in the open state, the first control valve and the fourth control valve are in the closed state, the salt tank, the salt suction channel, the confluence channel, the connecting channel, the The first water inlet channel, the water injection channel and the salt tank are sequentially connected to form a circulating dissolved salt channel. The waterway system of the water softener according to claim 10, wherein the waterway system of the water softener has a recoil mode, and in the recoil mode, the first control valve and the third control valve and the fourth control valve are in the open state, the second control valve and the water pump are in the closed state, the first water inlet channel, the connecting channel, the confluence channel, the resin tank and The drainage channels are connected in sequence to form a backwash waterway. The waterway system of the water softener according to claim 10, wherein the waterway system of the water softener has a regeneration mode, and in the regeneration mode, the first control valve, the fourth control valve and the The water pumps are all in the open state, the second control valve and the third control valve are in the closed state, the salt tank, the salt suction channel, the first water inlet channel, the confluence channel, the The resin tank and the drainage channel are sequentially connected to form a regeneration waterway. The waterway system of the water softener according to claim 10, wherein the waterway system of the water softener has a backwash mode, and in the backwash mode, the first control valve and the fourth control valve are all in an open state, the second control valve, the third control valve, and the water pump are all in a closed state, and the first water inlet channel, the confluence channel, the resin tank, and the drainage channel are sequentially Connected to form a backwash waterway. The waterway system of the water softener according to claim 10, further comprising a second water inlet channel and a water outlet channel, the second water inlet channel communicates with the first port, the water outlet channel communicates with the The second port is connected. The waterway system of the water softener according to claim 16, wherein the waterway system of the water softener has a normal operation mode, and in the normal operation mode, the water pump, the first control valve, the The second control valve, the third control valve and the fourth control valve are all in a closed state, and the second water inlet channel, the resin tank and the water outlet channel are connected in sequence to form a softened water channel. The waterway system of the water softener according to claim 16, further comprising a bypass channel, and the bypass channel communicates the second water inlet channel with the water outlet channel. A control method for a waterway system of a water softener, which is used for the waterway system of a water softener according to claim 16, wherein the waterway system of the water softener has normal operation mode, water injection mode, salt dissolution mode and regeneration mode mode, the control method of the waterway system of the water softener includes the following steps: Control the switching states of the water pump, the first control valve, the second control valve, the third control valve and the fourth control valve, so that the water system of the water softener is in the normal operation mode, the water injection mode, the switch between the salt-dissolving mode and the regeneration mode. The control method of the waterway system of the water softener according to claim 19, characterized in that, switching is performed sequentially according to the order of the water injection mode, the dissolved salt mode and the regeneration mode; Switching to said water filling mode includes the following steps: Both the first control valve and the second control valve are opened, and the third control valve, the fourth control valve and the water pump are all closed, so that the first water inlet channel, the water injection channel and the salt The tanks are connected in turn to form a water injection channel; Switching to the salt-dissolving mode includes the following steps: Open the second control valve, the third control valve, and the water pump, and close the first control valve and the fourth control valve, so that the salt tank, salt suction channel, and confluence The channel, the connecting channel, the first water inlet channel, the water injection channel and the salt tank are sequentially connected to form a circulating dissolved salt channel; Switching to said regenerative mode includes the steps of: Open the first control valve, the fourth control valve and the water pump, and close the second control valve and the third control valve, so that the salt tank and the salt suction channel , the first water inlet channel, the confluence channel, the resin tank and the drainage channel are connected in sequence to form a regeneration waterway. The control method of the waterway system of the water softener according to claim 20, characterized in that, the waterway system of the water softener also includes a recoil mode, and the control method of the waterway system of the water softener also includes: switching to said recoil mode after mode completion, before entering said regeneration mode; Switching to the recoil mode includes the following steps: Open the first control valve, the third control valve and the fourth control valve, close the second control valve and the water pump, the first water inlet channel, the connecting channel , the confluence channel, the resin tank and the drainage channel are connected in sequence to form a backwash waterway. The control method of the waterway system of the water softener according to claim 20, wherein the waterway system of the water softener also includes a backwashing mode, and the control method of the waterway system of the water softener also includes the regeneration mode switch to the backwash mode after completion; Switching to the backwash mode includes the following steps: Both the first control valve and the fourth control valve are opened, the second control valve, the third control valve and the water pump are all closed, the first water inlet channel, the confluence channel , the resin tank and the drainage channel are sequentially connected to form a backwashing waterway. The control method of the waterway system of the water softener according to any one of claims 19 to 22, wherein switching the waterway system of the water softener to the normal operation mode comprises the following steps: The water pump, the first control valve, the second control valve, the third control valve and the fourth control valve are all closed, so that the second water inlet channel, the resin tank and the water outlet channel are connected in sequence Form a softened waterway. A water softener, characterized by comprising the waterway system of the water softener according to any one of claims 1-18.

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