WO2024174197A1 - Water intake valve anti-leakage and water-stopping apparatus - Google Patents

Abstract

Disclosed is a water intake valve anti-leakage and water-stopping apparatus, comprising a water intake valve body, a water-stopping switch, a water-stopping valve, a magnetic attraction structure, and a small float. The water intake valve body is internally provided with water intake and discharge channels. The water discharge channel is provided with a water discharge end surface, and the water discharge end surface is blocked by the water-stopping valve. A water passing cavity is provided between the water intake channel and the water discharge channel. One end of the water passing cavity is a water passing surface where water passes from the water intake channel to the water discharge channel, and the other end is provided with a mounting opening. The mounting opening is provided with the water-stopping switch, the water-stopping switch comprising a driving switch and a water-stopping member. The water-stopping member is provided at an inner end of the driving switch, and the driving switch is slidably provided in the water passing cavity so as to drive the water-stopping member to slide to open or block the water passing surface. The small float is provided with a driving part, the magnetic attraction structure being provided between the driving part and the driving switch. The driving part moves and floats up and down along with the small float to magnetically attract the driving switch. When the driving part magnetically attracts the driving switch, the driving switch slides to block the water passing surface. The water-stopping structure and the magnetic attraction structure added onto the water intake valve in the present invention can solve the problem of water leakage. The structure is novel and has a long service life.

Description

A water inlet valve anti-leakage water stopping device Technical Field

The invention belongs to the technical field of bathroom water fittings, and in particular relates to a water inlet valve anti-leakage and water-stopping device.

Background Art

The toilet tank water inlet valve of the prior art mainly utilizes the water pressure in the domestic water pipe network to realize water inlet or blocking, and includes a valve body, a water stop valve, a buoyancy control mechanism, a water inlet channel, and a water outlet channel. The water stop valve is installed on the valve body, and the valve body is connected to the water inlet pipe. The buoyancy control mechanism controls the internal pressure chamber of the water stop valve to form water pressure or pressure relief, so as to realize the on-off of the water flow between the water inlet channel and the water outlet channel. Among them, the toilet tank water inlet valve is divided into a back pressure water inlet valve and a needle valve water inlet valve according to the different structures of the water stop valve. Both rely on the installation of a water stop pad inside the water stop valve to form a pressure chamber, and rely on the elastic deformation of the water stop pad to seal the water stop surface of the water inlet channel to realize the on-off of the water flow. For example, when the pressure relief hole of the back pressure water inlet valve is blocked, the amount of water in the back pressure chamber increases, and the expanded back pressure rubber pad blocks the connection between the water inlet channel and the water outlet channel. Both the back pressure water inlet valve and the needle valve water inlet valve may fail, and failure will cause the water inlet valve to continuously feed water into the water tank, causing water leakage and wasting water resources. However, the structural design of the internal waterway of most water inlet valves is traditional, and there are great limitations if additional devices are to be added, and life issues such as structural wear must also be considered. Therefore, the present invention proposes a new water inlet valve anti-leakage and water-stopping device.

Technical issues

The purpose of the present invention is to provide a water inlet valve anti-leakage water-stopping device, which can solve the water leakage problem by adding a water-stopping structure and a magnetic attraction structure on the water inlet valve, and has a novel structure and a long service life.

Technical Solutions

To achieve the above-mentioned purpose, the solution of the present invention is: a water inlet valve anti-leakage water-stop device, comprising a water inlet valve body, a water stop switch, a water stop valve, a magnetic structure and a small float, wherein a water inlet channel and a water outlet channel are arranged in the water inlet valve body, a water outlet end face is arranged in the water outlet channel, the water stop valve blocks the water outlet end face, a water flow cavity is arranged between the water inlet channel and the water outlet channel, one end of the water flow cavity is a water flow surface for water to flow from the water inlet channel to the water outlet channel, and the other end is provided with an installation opening; the installation opening is provided with a water stop switch, the water stop switch comprises a driving switch and a water stop member, the outer end of the driving switch is exposed from the installation opening, the inner end of the driving switch is provided with a water stop member, and the driving switch is slidably arranged in the water flow cavity to drive the water stop member to slide open or block the water flow surface;
The small float is provided with a driving part, and a magnetic attraction structure is provided between the driving part and the driving switch. The driving part floats up and down with the small float to magnetically attract the driving switch. When the driving part magnetically attracts the driving switch, the driving switch slides and blocks the water surface.

As a preferred embodiment, the water stop switch also includes an elastic pin and a coil spring, the water stop part is a plunger, and the driving switch includes a knob, a screw and a switch bracket. The center of the switch bracket is axially provided with an internal threaded hole, the rod body of the screw is provided with an external thread, the screw is cooperated and penetrated in the internal threaded hole, the outer end of the screw is slidably sleeved on the knob and is circumferentially limited with the knob, the knob slides axially relative to the switch bracket, and the sliding direction of the knob is opposite to the moving direction of the screw. A plunger is provided at the inner end of the screw, and the screw movably pushes the plunger to open or block the water surface. The coil spring is arranged between the knob and the switch bracket in a compressed initial state, a pin hole is opened on one side of the switch bracket, and an elastic pin is built into the pin hole, and a clamping portion is provided on the side of the knob for the elastic pin to clamp.

As a preferred embodiment, the magnetic attraction structure includes a first magnet and a second magnet, the driving part of the small float is located at the lower side of the elastic pin, the second magnet is arranged on the outside of the elastic pin, and the driving part is provided with a magnetic second magnet to make the elastic pin slide and contract and disengage from the first magnet of the clamping part.

As a preferred embodiment, the switch bracket is provided with a mounting column, an internal threaded hole is provided inside the mounting column, the inner end of the mounting column is inserted into the water passage cavity through the mounting port, the outer end of the mounting column is sleeved with a coil spring, one end of the coil spring abuts against the knob, and the other end of the coil spring abuts against the switch bracket.

As a preferred embodiment, a first O-ring is arranged between the screw and the internal threaded hole, a second O-ring is sleeved at the connection between the inner end of the mounting column and the water passage chamber, a conical plug is formed in the middle of the end of the screw, and the plunger has a central through hole at a position corresponding to the conical plug. When the screw is movably pushed against the plunger, the conical plug seals the central through hole, so that the internal threaded hole forms a back pressure chamber on the back of the plunger.

As a preferred solution, the water inlet valve body is provided with an open clearance opening at the position of the knob and the elastic pin.

As a preferred solution, the plunger is made of rubber material.

As a preferred solution, the water stop valve is a back pressure valve.

Beneficial Effects

After adopting the above scheme, the gain effect of the present invention is that: the present invention designs a brand-new internal waterway structure, and centrally arranges the water inlet channel and the water outlet channel at the same end of the water passage chamber, so that a water stop switch can be added to the other end of the water passage chamber, and the water stop switch slides in the water passage chamber to control whether the water inlet channel and the water outlet channel are connected. Therefore, when the water stop pad cannot block the water outlet end face of the water outlet channel, that is, when the water inlet valve fails, the water stop switch can block the water surface to block the connection between the water inlet channel and the water outlet channel, complete the water stop, and replace the water stop pad for water stop; the present invention has a simple and ingenious structure and can be applied to most water inlet valves. In addition, the present invention also designs an ingenious water stop switch structure. When the water level is too high, the small float can automatically drive the water stop switch to stop water through the magnetic structure. The magnetic structure has little wear, which can extend the service life and stably realize the opening and stopping of water control.

BRIEF DESCRIPTION OF THE DRAWINGS

1 is a state diagram of a small buoy and an elastic pin being separated from each other in accordance with an embodiment of the present invention (when the water level drops);
FIG2 is a schematic diagram of the decomposed structure of the first embodiment of the present invention;
FIG3 is a schematic diagram of a half-exploded structure of the first embodiment of the present invention;
FIG4 is a schematic diagram of a half-section three-dimensional structure of the first embodiment of the present invention;
FIG5 is a schematic diagram of a half-section front view of the structure of the first embodiment of the present invention;
FIG6 is an enlarged view of point A in FIG4 ;
FIG7 is an enlarged view of point B in FIG5;
8 is a schematic diagram of the three-dimensional structure of the valve body inside the water inlet valve body according to the first embodiment of the present invention;
FIG9 is a schematic diagram of the three-dimensional structure of a switch bracket according to an embodiment of the present invention;
FIG10 is a schematic diagram of the three-dimensional structure of a knob according to an embodiment of the present invention;
FIG11 is an enlarged view of point C in FIG3 ;
12 is a state diagram of the magnetic attraction between a small float and an elastic pin in a first embodiment of the present invention (when the water level exceeds the upper limit).

Description of labels:
1. Water inlet valve body; 11. Water inlet channel; 12. Water outlet channel; 121. Annular flow channel; 122. Water outlet annular gap; 13. Water outlet end face; 14. Water outlet pore; 15. Water passage cavity; 151. L-shaped bending section; 16. Water passage surface; 17. Installation port; 18. Giving way port; 19. Buckle interface; 2. Water stop switch; 21. Knob; 211. Clamping part; 22. Screw; 221. Conical plug; 23. Switch bracket; 231. Pin hole; 232. Internal threaded hole; 233. Mounting column; 234. First O-ring; 235. Second O-ring; 236. Anti-siphon sheet; 237. Snap-on convex ring; 24. Elastic pin; 25. Coil spring; 26. Plunger; 261. Center through hole; 262. Back pressure chamber; 27. Second magnet; 3. Back pressure valve; 31. Water stop pad; 4. Large float; 5. Small float; 51. Drive unit; 52. First magnet.

Best Mode for Carrying Out the Invention

The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

Embodiment 1:
The present invention provides a water inlet valve anti-leakage water stop device, as shown in Figures 1 to 11, comprising a water inlet valve body 1, a water stop switch 2, a water stop valve, a magnetic attraction structure and a small float 5. This embodiment is described by taking the water stop valve of the water inlet valve as a back pressure valve 3 as an example. The back pressure valve 3 is only one type of water stop valve. In other embodiments, other water stop valves including a water stop pad 31 may also be used.

As shown in Fig. 3 and Fig. 11, the inner valve body of the water inlet valve body 1 is provided with a water inlet channel 11 and a water outlet channel 12, the water outlet channel 12 forms a water outlet end face 13, and a water outlet hole 14 is provided on the water outlet end face 13, the back pressure valve 3 is arranged on the water outlet end face 13, the back pressure valve 3 is movable to control the water stop pad 31 to open or block the water outlet hole 14, the back pressure valve 3 is connected to the large float 4, and the back pressure valve 3 moves with the rise and fall of the large float 4. The working principle of the back pressure valve 3 in this embodiment is consistent with the existing back pressure valve 3, and will not be repeated in this case.

When the back pressure valve 3 fails, the water stop pad 31 cannot block the water outlet end face 13, resulting in continuous water outflow from the water outlet end face 13 and continuous water inflow from the water inlet valve. For this reason, the present invention specially designs a magnetically controlled water stop switch 2, which can block water inflow through the water stop switch 2 without the need to stop water through the back pressure valve 3.

4, 5, 6 and 7, the water inlet channel 11 takes in water from bottom to top, and a water passage cavity 15 is provided on the side between the water inlet channel 11 and the water outlet channel 12. One end of the water passage cavity 15 is a water passage surface 16 for water to pass from the water inlet channel 11 to the water outlet channel 12, and the other end is provided with an installation port 17 for installing the water stop switch 2. The water-stop switch 2 comprises a driving switch and a water-stop component. The outer end of the driving switch exposes the mounting port 17, and the inner end of the driving switch is provided with a water-stop component. The driving switch is slidably provided in the water-passing chamber 15 to drive the water-stop component to slide open or block the water-passing surface 16. The small float 5 is provided with a driving part 51, and a magnetic attraction structure is provided between the driving part 51 and the driving switch. The driving part 51 floats up and down with the small float 5 to magnetically attract the driving switch. As the water level continues to rise, the small float 5 floats up to cause the driving part to magnetically attract the driving switch. The driving switch is displaced under the action of the magnetic force, and the driving switch and the water-stop component are driven to slide in the water-passing chamber 15 to cause the water-stop component to block the water-passing surface 16. No water flows between the water inlet channel 11 and the water outlet channel 12, so that the water inlet valve stops inletting water.

After the water level drops, the driving part 51 of the small float 5 disengages from the driving switch. The above scheme does not limit how the small float 5 can reopen the water inlet after the water level drops. This case does not impose any restrictions. The preferred embodiment uses manual driving to reset the driving switch. The water stop member reopens the water surface 16 under the action of the water flow, and water flows between the water inlet channel 11 and the water outlet channel 12, so that the water inlet valve can re-inflate.

The manual reset of the drive switch can be driven by pressing or by rotation. The preferred embodiment is described below in terms of rotation drive.

In conjunction with Figures 2, 6 and 7, the drive switch includes a knob 21, a screw 22 and a switch bracket 23, the water stop member is a plunger 26, and the water stop switch 2 specifically includes an elastic column pin 24 and a coil spring 25. As shown in Figures 3, 8 and 9, the switch bracket 23 is installed in the mounting port 17, and a pin hole 231 is provided on one side of the switch bracket 23, and the pin hole 231 has an elastic column pin 24 built therein. In conjunction with Figure 10, a clamping portion 211 is provided on the side of the knob 21 for the elastic column pin 24 to be movably clamped, and the initial state of the elastic column pin 24 is clamped with the clamping portion 211. The knob 21 is rotatably installed on the switch bracket 23, and the coil spring 25 is arranged in a compressed initial state on the rotary knob. Between the button 21 and the switch bracket 23, an internal threaded hole 232 is axially provided at the center of the switch bracket 23, and the rod body of the screw rod 22 is provided with an external thread, and the screw rod 22 is cooperated and penetrated in the internal threaded hole 232, and the outer end of the screw rod 22 is slidably sleeved with the knob 21 and is circumferentially limited with the knob 21, and the knob 21 slides axially relative to the switch bracket 23, and the sliding direction of the knob 21 is opposite to the moving direction of the screw rod 22, and a plunger 26 is provided at the inner end of the screw rod 22, and the screw 22 movably pushes the plunger 26 to open or block the water surface 16; the plunger 26 is preferably made of rubber material, and the rubber has a certain elastic deformation force, which can withstand the push of the screw rod 22 and can also be reset.

The present invention uses magnetic force and buoyancy to trigger the movement of the elastic pin 24. As shown in Figure 1, the small float 5 is arranged on the water inlet valve body 1 and is located on the side and below the elastic pin 24. The magnetic attraction structure includes a first magnet 52 and a second magnet 27. The driving part 51 of the small float 5 is provided with the first magnet 52, and the outer side of the elastic pin 24 is provided with the second magnet 27 or the elastic pin 24 itself is a magnetic conductor, and the first magnet 52 is located on the side and below the second magnet 27; in combination with Figures 1 and 12, the small float 5 floats up and down with the increase or decrease of the water volume in the water tank, and the driving part 51 cooperates with or disengages from the elastic pin 24; when the first magnet 52 magnetically attracts the second magnet 27, the elastic pin 24 contracts and disengages from the clamping part 211, and when the first magnet 52 disengages from the second magnet 27, the elastic pin 24 is reset.

Based on the above scheme, when the back pressure valve 3 fails, the water stopping working process of this preferred embodiment is as follows:
First, the initial state of the elastic pin 24 is to be engaged with the engaging portion 211, and the initial state of the coil spring 25 is to be compressed. When the water inlet valve continuously fills the water tank with water, the small float 5 drives the driving portion 51 upwardly to approach the elastic pin 24 as the buoyancy increases. The first magnet 52 on the driving portion 51 and the second magnet 27 of the elastic pin 24 attract each other, and the elastic pin 24 contracts and outwardly disengages from the engaging portion 211. Then, since the limit of the elastic pin 24 is released, the knob 21 moves outwardly under the stretching action of the coil spring 25, and drives the screw 22 to move inwardly (because the moving direction of the screw 22 is opposite to that of the knob 21, and the moving direction of the screw 22 is determined by the rotation direction of the designed internal threaded hole 232). Finally, the screw 22 pushes against the plunger 26 to block the water surface 16, and no water flows between the water inlet channel 11 and the water outlet channel 12, and the water inlet valve stops taking in water.

When the back pressure valve 3 can stop water normally, the water level drops, and the water stop switch 2 can be reset at this time. The reset process is as follows:
By rotating the knob 21 and pressing the knob 21 at the same time, the coil spring 25 is converted from a stretched state to a compressed state. When it is compressed to a certain volume, the small float 5 drives the driving part 51 downward away from the elastic pin 24 as the buoyancy decreases, so the first magnet 52 on the driving part 51 is away from the second magnet 27 of the elastic pin 24, and the elastic pin 24 is reset inward to the engaging part 211 of the engaging knob 21. The knob 21 is restricted and cannot rotate at this time. While being pressed, the knob 21 moves inward while driving the screw 22 to move outward. The screw 22 releases the push on the plunger 26, and the water surface 16 is opened. Water flows between the water inlet channel 11 and the water outlet channel 12, and the water inlet valve can take in water normally.

As shown in Figures 7 and 9, the switch bracket 23 of the present invention is an important component for installing the water stop switch 2 on the water inlet valve body 1. The middle axis of the switch bracket 23 is provided with a mounting column 233, and an internal threaded hole 232 is provided inside the mounting column 233. The screw 22 is threadedly matched with the internal threaded hole 232. A first O-ring 234 is provided between the screw 22 and the internal threaded hole 232 to ensure that water does not flow out of the internal threaded hole 232; the inner end of the mounting column 233 is plugged into the water passage cavity 15 from the mounting port 17, and a second O-ring 235 is sleeved at the plug-in position to ensure the air tightness of the water passage cavity 15 and prevent water from flowing out of the mounting port 17. A conical plug 22 is formed in the middle of the end of the screw 22 1, the plunger 26 is provided with a central through hole 261 at a position corresponding to the conical plug 221, and when the screw 22 is pushed against the plunger 26, the conical plug 261 is sealed and plugged into the central through hole 261, so that the internal threaded hole 232 forms a back pressure chamber 262 at the back of the plunger 26, and the design of the back pressure chamber 262 can form a huge pressure at the back of the plunger 26, so that the plunger 26 can more effectively block the water surface 16; in addition, the outer end of the mounting column 233 is sleeved with a coil spring 25, one end of the coil spring 25 is in contact with the knob 21, and the other end of the coil spring 25 is in contact with the switch bracket 23, so that most of the components of the water stop switch 2 can be installed on the water inlet valve body 1 through the switch bracket 23. The inner end of the mounting column 233 is also sleeved with an anti-siphon sheet 236. As shown in Figure 11, a snap-fitting protrusion 237 is formed on the edge of the switch bracket 23, and a snap-fitting interface 19 is formed on the water inlet valve body 1 at a position corresponding to the snap-fitting protrusion 237. The switch bracket 23 is snapped into the snap-fitting interface 19 of the water inlet valve body 1 through the snap-fitting protrusion 237. The snap-fitting interface 19 protrudes from the water inlet valve body 1 relative to the mounting port 17, so that an annular flow channel 121 connected to the water outlet hole 14 is formed between the water inlet valve body 1 and the snap-fitted switch bracket 23, and a water outlet annular gap 122 is formed on the outer periphery of the water inlet channel 11 of the water inlet valve body 1, so that after the water flows into the water outlet channel 12 from the water passing surface 16, the water is discharged through the water outlet end face 13, the water outlet hole 14, the annular flow channel 121 and the water outlet annular gap 122.

The structures of the water inlet channel 11 and the water outlet channel 12 are further refined. As shown in Figure 11, the water inlet channel 11 is vertically arranged in the water inlet valve body 1, and the water flow chamber 15 is horizontally arranged in the water inlet valve body 1. The water inlet channel 11 is bent and connected to one end of the water flow chamber 15. An L-shaped bending section 151 is arranged at one end of the water flow chamber 15. The water flow surface 16 is formed on the L-shaped bending section 151. The water flow chamber 15 is connected to the water outlet end face 13 through the L-shaped bending pipe section 151. The L-shaped bending section 151 blocks the water outlet end face 13 and the water inlet channel 11.

As shown in FIG. 1 , the water inlet valve body 1 is provided with an open clearance opening 18 at the position of the knob 21 and the elastic pin 24 . The user can operate the reset of the knob 21 through the clearance opening 18 , and the small float 5 can also cooperate with the elastic pin 24 through the clearance opening 18 .

When the water inlet valve in this case is taking in water normally, the water level in the water tank rises and falls normally and will not drive the small float to trigger the water stop switch. When the water inlet valve fails, water continues to flow into the water inlet channel, and the water level of the incoming water exceeds the normal water level, causing overflow. The overflow water drives the small float to rise and fall. Therefore, the water level rise and fall described in the present invention may refer to the rise and fall of the overflow water.

The above is only a preferred embodiment of the present invention. The design concept of the present invention is not limited to this, so the scope of implementation of the present invention cannot be limited thereto. Any non-substantial changes to the present invention using this concept, that is, equivalent changes and modifications made according to the patent scope of the present invention and the contents of the specification, should all fall within the scope covered by the present invention.

Claims (8)

A water inlet valve anti-leakage and water-stopping device, characterized in that it comprises a water inlet valve body, a water stop switch, a water stop valve, a magnetic attraction structure and a small float, wherein a water inlet channel and a water outlet channel are arranged in the water inlet valve body, a water outlet end face is arranged in the water outlet channel, the water stop valve blocks the water outlet end face, a water flow cavity is arranged between the water inlet channel and the water outlet channel, one end of the water flow cavity is a water flow surface for water to flow from the water inlet channel to the water outlet channel, and the other end is provided with a mounting opening; the mounting opening is provided with a water stop switch, the water stop switch comprises a driving switch and a water stop member, the outer end of the driving switch is exposed from the mounting opening, the inner end of the driving switch is provided with a water stop member, the driving switch is slidably arranged in the water flow cavity to drive the water stop member to slide open or block the water flow surface; the small float is provided with a driving part, a magnetic attraction structure is arranged between the driving part and the driving switch, the driving part floats up and down with the small float and magnetically attracts the driving switch, and when the driving part magnetically attracts the driving switch, the driving switch slides and blocks the water flow surface. 14. The water-inlet valve anti-leakage and water-stop device as described in claim 1 is characterized in that: the water-stop switch also includes an elastic pin and a coil spring, the water-stop part is a plunger, the driving switch includes a knob, a screw and a switch bracket, the center of the switch bracket is axially provided with an internal threaded hole, the rod body of the screw is provided with an external thread, the screw is cooperatively penetrated in the internal threaded hole, the outer end of the screw is slidably sleeved on the knob and is circumferentially limited with the knob, the knob slides axially relative to the switch bracket, the sliding direction of the knob is opposite to the moving direction of the screw, a plunger is provided at the inner end of the screw, the screw movably pushes the plunger to open or block the water surface, the coil spring is arranged between the knob and the switch bracket in a compressed initial state, a pin hole is provided on one side of the switch bracket, an elastic pin is built-in the pin hole, and a clamping portion is provided on the side of the knob for the elastic pin to clamp. The water inlet valve anti-leakage and water-stopping device as described in claim 2 is characterized in that: the driving part of the small float is located at the lower side of the elastic pin, a second magnet is provided on the outer side of the elastic pin, and the driving part is provided with a first magnet that magnetically attracts the second magnet to make the elastic pin slide and contract and disengage from the clamping part. The water inlet valve anti-leakage and water-stopping device as described in claim 2 is characterized in that: the switch bracket is provided with a mounting column, an internal threaded hole is provided inside the mounting column, the inner end of the mounting column is inserted into the water passage cavity through the mounting port, the outer end of the mounting column is sleeved with a coil spring, one end of the coil spring abuts against the knob, and the other end of the coil spring abuts against the switch bracket. A water inlet valve anti-leakage and water-stopping device as described in claim 4 is characterized in that: a first O-ring is arranged between the screw and the internal threaded hole, a second O-ring is sleeved at the connection between the inner end of the mounting column and the water passage chamber, a conical plug is formed in the middle of the end of the screw, and the plunger has a central through hole at a position corresponding to the conical plug, and when the screw is movably pushed against the plunger, the conical plug seals the central through hole, so that the internal threaded hole forms a back pressure chamber on the back of the plunger. The water inlet valve anti-leakage and water-stopping device as described in claim 2 is characterized in that: the water inlet valve body is provided with an open clearance opening at the position of the knob and the elastic pin. The water inlet valve anti-leakage and water-stopping device as described in claim 2 is characterized in that the plunger is made of rubber material. The water inlet valve anti-leakage and water-stopping device as claimed in claim 1 is characterized in that the water-stopping valve is a back-pressure valve.