WO2023213003A1 - Washdown siphonic sewage discharge structure, and toilet - Google Patents

Abstract

A washdown siphonic sewage discharge structure and a toilet. The sewage discharge structure comprises a toilet (1) and a siphon bend (2), wherein the bottom of the toilet (1) is provided with a sewage discharge outlet (11); the siphon bend (2) comprises a sewage inlet section (21), a buffer section (22), a turning section (23) and a sewage discharge section (24), which are in communication with each other in sequence; the sewage inlet section (21) is in communication with the sewage discharge outlet (11), the sewage inlet section (21) is provided with a sewage inlet (211) and a shallow water platform (212), which are below the sewage discharge outlet (11), and the shallow water platform is in smooth transition with a front edge portion of the sewage inlet (211); the end of the sewage inlet section (21) connected to the buffer section (22) is arranged obliquely backwards and downwards, the buffer section (22) is arranged obliquely backwards and upwards and forms a trap in smooth transition with the sewage inlet section (21), and a water seal level of the trap is located above the shallow water platform (212); the transverse width of the cross section of each part of the buffer section (22) is greater than the longitudinal width thereof, and the cross-sectional area of the buffer section (22) gradually decreases in a sewage discharge direction; and the end of the sewage discharge section (24) away from the turning section (23) extends forwards and downwards, and the cross-sectional area of the end of the sewage discharge section (24) close to the turning section (23) is greater than that of the end of the sewage discharge section (24). The washdown siphonic sewage discharge structure can quickly wash away sewage, is water-saving and noiseless, and has a good deodorization effect.

Description

A direct flush siphon sewage structure and toilet Technical field

The invention relates to the technical field of sanitary ware, and in particular to a direct flush siphon type sewage discharge structure and a toilet.

Background technique

The most common flushing methods of toilets on the market are direct flush and jet siphon.

Direct-flush toilets generally have simple pipelines and short paths. When sewage is discharged, the water flows directly into the sewage inlet. It has the advantages of fast flow rate, large impulse, and strong sewage discharge capacity. However, it is prone to causing loud noise during flushing. And since continuous water flow is required to wash away dirt, direct flush toilets consume a lot of water, are not water-saving, and have a mediocre anti-odor effect.

The siphon toilet uses the siphon principle to suck away the dirt, which has the advantage of saving water; in addition, it has an inverted "S"-shaped pipe, which has a high water storage ratio and good anti-odor effect; in addition, the slope of the pool wall is relatively high. It is slow and has low flushing noise; however, due to the slender pipe and small sewage inlet, siphon toilets are prone to blockage when flushing.

In order to improve the sewage discharge effect of the siphon toilet, a jet water channel is usually added to the siphon toilet. Among them, the jet holes of the jet water channel are aligned with the sewage inlet. When flushing, most of the water is sprayed out from the jet holes, and the powerful momentum of the jet water helps the dirt to be discharged quickly. Because the spray holes spray water from the bottom of the water, it is effectively silent. Since only a small amount of water flows out from the water distribution holes around the toilet bowl, it is easy to have weak scrubbing of the pool wall and poor dirt cleaning effect.

Therefore, it is necessary to develop a toilet that can quickly flush away dirt, save water, be quiet, and have good anti-odor effects.

Contents of the invention

The technical problem to be solved by the present invention is to provide a direct siphon type sewage discharge structure, which can quickly flush away dirt and has excellent water saving, silent and anti-odor effects.

The technical problem to be solved by the present invention is to provide a direct-flush siphon toilet that can quickly flush away dirt and has excellent water-saving, silent, and anti-odor effects.

In order to solve the above technical problems, the present invention provides a direct flush siphon sewage structure, which includes a toilet and a siphon elbow.

The bottom of the toilet is provided with a sewage outlet;

The siphon elbow includes a sewage inlet section, a buffer section, a steering section and a sewage discharge section that are connected in sequence;

The sewage inlet section is connected with the sewage outlet, and the sewage inlet section is provided with a sewage inlet and a shallow water platform below the sewage outlet, and the shallow water platform transitions smoothly from the front edge of the sewage inlet;

One end of the dirt inlet section connected to the buffer section is inclined toward the rear and downward, and the buffer section is inclined toward the rear and upward and forms a smoothly transitioning water trap with the dirt inlet section. The water cover is located above the shallow water platform;

The transverse width of the cross-section of the buffer section is greater than the longitudinal width, and the cross-sectional area of the buffer section gradually decreases along the sewage discharge direction;

One end of the sewage discharge section away from the turning section extends forward and downward, and the cross-sectional area of the end of the sewage discharge section close to the turning section is larger than the cross-sectional area of the end of the sewage discharge section.

As an improvement to the above solution, the slopes at both ends of the turning section are gentler than the slope at one end of the sewage discharge section connected to the turning section.

As an improvement to the above solution, the siphon bend can pass a solid ball with a diameter greater than 48 mm.

In addition, the present invention also discloses a direct flush siphon toilet, which includes a flushing structure and the above direct flush siphon sewage structure,

The flushing structure includes a water inlet chamber provided at the rear end of the toilet, and a water conduit provided along the top edge of the toilet, with one end of the water conduit provided with a flushing hole connected to the water inlet chamber;

The toilet is provided with a spiral scrubbing surface. The spiral scrubbing surface is arranged around the sewage outlet and finally falls into the sewage outlet. The spiral scrubbing surface rotates from top to bottom in the same direction as the water conduit. The flushing holes extend in the same direction around the toilet bowl.

As an improvement to the above solution, the water inlet chamber is provided with a water inlet hole, and the water inlet chamber is provided with a horizontally arranged pressurized water surface. The pressurized water surface is located below the top wall of the water inlet chamber, and the pressurized water surface is close to One end of the water inlet hole and an end away from the water inlet hole are transitionally connected to the top wall of the water inlet cavity through a smooth slope.

As an improvement to the above solution, the water inlet chamber includes a first water inlet chamber and a second water inlet chamber that are independent of each other, and the water guide channel includes a first water guide channel and a second water guide channel, and the first water guide channel passes through The rear end of the toilet is connected to the first water inlet chamber through a first flushing hole. The second water conduit passes through the front end of the toilet and is connected to the second water inlet chamber through a second flushing hole. cavity communication;

The first water conduit is provided with a first water retaining rib on the side of the first flushing hole close to the sewage outlet, and the first water retaining rib is tangent to the second water conduit;

The second water conduit is provided with a second water retaining rib on the side of the second flushing hole close to the sewage outlet, and the second water retaining rib is tangent to the first water conduit.

As an improvement to the above solution, the spiral scrubbing surface includes a first spiral scrubbing surface and a second spiral scrubbing surface, and the first spiral scrubbing surface and the second spiral scrubbing surface rotate in the same direction from top to bottom;

The outer edge portion of the first spiral scrubbing surface is partially connected to the inner edge portion of the second spiral scrubbing surface, and forms a smooth and continuous first spiral profile; the inner edge portion of the first spiral scrubbing surface is connected to the inner edge portion of the second spiral scrubbing surface. The outer edges of the second spiral scrubbing surface are partially connected and form a smooth and continuous second spiral profile, and the second water retaining ribs are tangent to the first spiral profile.

As an improvement to the above solution, the bottom of the first spiral scrubbing surface is tangent to the front edge of the water storage platform, and the bottom of the second spiral scrubbing surface is tangent to the rear edge of the dirt inlet.

As an improvement to the above solution, the portion of the first spiral scrubber surface located at the rear end of the drain hole is a convex arc surface.

As an improvement to the above solution, the angle between the circumferential inner wall of the sewage outlet and the vertical direction is not greater than 15°, and the side walls of the sewage outlet are arranged vertically.

Implementing the present invention has the following beneficial effects:

The sewage inlet section and the buffer section of the siphon bend of the present invention form a water trap, which can prevent the odor in the pipeline from being emitted, and the sewage inlet section is provided with a sewage inlet and a shallow water platform below the sewage outlet, and the shallow water platform and the sewage inlet are connected The front part transitions smoothly, and the shallow water platform is located under the water cover of the water trap, which expands the water cover, has good anti-odor effect, and the increased water storage volume helps to flush away dirt; the end connected to the dirt inlet section and the buffer section is backward The inclined setting at the bottom makes the area of the sewage inlet larger than the cross-sectional area of the sewage inlet section, making it easier to wash down large dirt, helping to improve the sewage discharge capacity and improving the siphon effect; in addition, the lateral width of the cross-sections of the buffer section Larger than the longitudinal width, the water passing area is enlarged at the same cross-sectional height, and the water storage capacity of the trap is larger, making it easier to discharge sewage; the cross-sectional area of the buffer section smoothly transitions from large to small along the sewage discharge direction, connecting the sewage inlet section and the turning section, and the end of the sewage discharge section close to the turning section (i.e., the upper section of the sewage discharge section) has a large cross-sectional area, and the end of the sewage discharge section (i.e., the lower section of the sewage discharge section) has a small cross-sectional area, which can improve the siphon effect and increase water pumping. Strength to help dirt quickly discharge from the siphon bend.

The invention increases the water volume of the siphon elbow's sewage inlet, sealing surface and water trap. It uses the cross-sectional changes of each section of the siphon elbow to form a huge negative pressure during flushing to quickly discharge large dirt, which is better than The conventional siphon toilet pipe can pass through a ball of Φ48mm, but the siphon elbow of the present invention can pass through a solid ball with a maximum diameter of 53mm, and the sewage discharge effect is better.

In addition, the direct flushing siphon type sewage discharge structure of the present invention uses a siphon bend, and the flushing process is gentler than that of the direct flushing type. Cleaning can be completed without high water pressure, and the flushing is quiet and has good water saving effects.

The direct flush siphon sewage discharge structure of the present invention uses a combination of a direct flush gall tip and a siphon elbow to improve the sewage discharge effect, and has the advantages of both direct flush and siphon. good.

Compared with the jet siphon type, the direct siphon type sewage discharge structure of the present invention can achieve a strong sewage discharge effect without the use of jet water flow, can simplify the waterway structure, and reduce product manufacturing costs.

The direct-flush siphon toilet of the present invention does not have a jet water channel, and the washing water flow is concentrated on the toilet bowl. The rotation direction of the spiral washing surface is the same as the extension direction of the water conduit self-flushing hole around the toilet bowl, which can better guide the flushing water flow. Function, the water flow sprayed from the flushing hole will form a vortex for scrubbing, enhance the momentum of the water flow, use the vortex energy of the water to increase the flushing intensity, improve the flushing effect on the pool wall, and avoid scrubbing residues.

The direct flush siphon toilet of the present invention can easily discharge dirt by combining the swirling energy of water with the siphon drainage of the siphon bend.

Description of the drawings

Figure 1 is a schematic structural diagram of an embodiment of a direct siphon sewage discharge structure according to the present invention;

Figure 2 is a side view of Figure 1;

Figure 3 is a schematic structural diagram of the A-A cross-section in Figure 1;

Figure 4 is a schematic structural diagram of the B-B cross-section in Figure 1;

Figure 5 is a schematic diagram of the D-D cross-sectional structure of Figure 2;

Figure 6 is a schematic structural diagram of an embodiment of a direct flush siphon toilet according to the present invention;

Figure 7 is a schematic structural diagram of the C-C cross-section in Figure 1;

FIG. 8 is a schematic structural diagram of the E-E cross section in FIG. 2 .

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the accompanying drawings.

As shown in Figures 1 and 2, the present invention discloses an embodiment of a direct siphon type sewage discharge structure, which includes a toilet 1 and a siphon elbow 2. The bottom of the toilet 1 is provided with a sewage outlet 11; The siphon elbow 2 includes a sewage inlet section 21, a buffer section 22, a steering section 23 and a sewage discharge section 24 that are connected in sequence; with reference to Figures 3 and 4, the sewage inlet section 21 is connected to the sewage outlet 11, and the sewage inlet section 21 is connected to the sewage outlet 11. Section 21 is provided with a sewage inlet 211 and a shallow water platform 212 below the sewage outlet 11. The shallow water platform 212 and the front edge of the sewage inlet 211 transition smoothly; the sewage inlet section 21 and the buffer One connected end of the section 22 is inclined backward and downward, and the buffer section 22 is inclined upward and backward and forms a smoothly transitioning water trap with the dirt inlet section 21. The water cover of the water trap (the water cover is as follows) 3 and 4) is located above the shallow water platform 212; with reference to Figure 5, the transverse width of the cross-section of the buffer section 22 is greater than the longitudinal width, and the cross-sectional area of the buffer section 22 is along the The sewage discharge direction gradually decreases; the end of the sewage discharge section 24 away from the turning section 23 extends forward and downward, and the cross-sectional area of the end of the sewage discharge section 24 close to the turning section 23 is larger than the end of the sewage discharge section 24 cross-sectional area.

In this embodiment, the sewage inlet section 21 and the buffer section 22 of the siphon bend 2 form a water trap, which can prevent the odor in the pipe from dispersing. The sewage inlet section 21 is provided with a sewage inlet 211 and a shallow water platform 212 below the sewage outlet 11. , the front part of the shallow water platform 212 and the sewage inlet 211 transitions smoothly. The shallow water platform 212 is located under the water cover of the trap, which enlarges the water cover, has good anti-odor effect, and avoids the small water surface of the existing direct flush toilet. , the problem of poor anti-odor effect, and the expansion of the water cover increases the water storage volume, which helps to flush away dirt; the end of the dirt inlet section 21 connected to the buffer section 22 is tilted backward and downward, so that the area of the dirt inlet 211 is larger than that of the inlet. The cross-sectional area of the sewage section 21 is larger, making it easier to flush down large dirt, helping to improve the sewage discharge capacity, improving the siphon effect, and avoiding the shortcomings of the existing siphon toilet inlet 211 that is small and easy to block; in addition, the buffer section The transverse width of each cross section of 22 is greater than the longitudinal width, which increases the water passing area at the same cross-sectional height, and the water storage capacity of the trap is larger, making it easier to discharge sewage; the cross-sectional area of the buffer section 22 changes from large to large along the sewage discharge direction. to a small and smooth transition, connecting the sewage inlet section 21 and the turning section 23, and the end of the sewage discharge section 24 close to the turning section 23 (ie, the upper section of the sewage discharge section 24) has a large cross-sectional area, and the end of the sewage discharge section 24 (ie, the sewage discharge section 24) The lower section) has a small cross-sectional area, which can improve the siphon effect, increase the pumping strength, and help dirt be quickly discharged from the siphon elbow 2.

This embodiment increases the water volume of the sewage inlet 211, the sealing surface and the water trap of the siphon bend 2, and utilizes the cross-sectional changes of each section of the siphon bend 2 to form a huge negative pressure during flushing to quickly remove large dirt. For discharge, compared with the conventional siphon toilet pipe passing ball Φ48mm, the siphon elbow 2 of this embodiment can pass a solid ball with a maximum diameter of 53mm, and the sewage discharge effect is better.

In addition, the direct flushing siphon sewage discharge structure of this embodiment adopts the siphon bend 2, and the flushing process is gentler than that of the direct flushing type. High water pressure is not required to complete cleaning. The flushing is quiet and has good water saving effects.

The direct flush siphon sewage discharge structure of this embodiment uses a combination of a direct flush gall tip and a siphon bend 2 to improve the sewage discharge effect. It has the advantages of both direct flush and siphon. It can quickly flush away dirt, and is water-saving, silent, and odor-proof. The results are great.

In addition, compared with the jet siphon type, the direct siphon sewage discharge structure of this embodiment does not require the use of jet water to discharge sewage to achieve a strong sewage discharge effect, which can simplify the waterway structure and reduce product manufacturing costs.

The position where the shallow water platform 212 is connected to the front edge of the sewage inlet 211 transitions smoothly. This is the place where the toilet is dropped. The distance between the shallow water platform 212 and the water cover is preferably controlled below 40mm to ensure that the toilet point is in the shallow water area and is easy to use. Splashing effectively avoids cross-infection. At the same time, dirt can be quickly discharged along the smooth inner wall of the pipe, improving the sewage discharge effect and avoiding blockage problems caused by existing technology that easily accumulate at defecation points.

In the present invention, the central axes of each section of the sewage inlet section 21, the buffer section 22, the turning section 23 and the sewage discharge section 24 are located on the same vertical plane. In this embodiment, it is preferable to set the slopes of both ends of the turning section 23 to be gentler than the slope of the end connecting the sewage discharge section 24 and the turning section 23 . The position where the turning section 23 and the buffer section 22 are connected has a gentle slope, which can further increase the water storage capacity of the trap; the inner wall of the sewage discharge section 24 and the end close to the turning section 23 is steeper than the turning section 23, and its slope is about 75 to 90°. It can help the dirt pass through the turning section 23 quickly and facilitate rapid discharge of dirt.

It should be noted that the slope mentioned in this embodiment refers to the angle between the central axis of a certain section of the siphon bend 2 and the horizontal plane.

The cross-sectional shape of the buffer section 22 in this embodiment is preferably a track shape or an elliptical shape. The cross-section of the sewage discharge section 24 is preferably circular.

The sewage discharge section 24 is divided into upper and lower sections. The upper section of the sewage discharge section 24 (i.e., the end of the sewage discharge section 24 close to the turning section 23) has a large pipe diameter and a steep inner wall, which is convenient for sewage discharge; the lower section of the sewage discharge section 24 (i.e., the end of the sewage discharge section 24) )The pipe diameter is smaller than the upper section, which effectively improves the siphon effect and increases the pumping intensity. The combination of the upper section and the lower section of the sewage discharge section 24 is more conducive to discharging the sewage from the sewage outlet 11, improves the sewage discharge capacity, and avoids the situation where it is difficult for the existing siphon toilet to discharge large dirt.

In addition, with reference to Figures 6 and 7, the present invention also discloses a direct flush siphon toilet, which includes a flushing structure and the above direct flush siphon sewage structure. The flushing structure includes a flushing structure located on the toilet 1 The water inlet chamber 3 at the rear end, and the water conduit channel provided along the top edge of the toilet 1, one end of the water conduit channel is provided with a flushing hole connected to the water inlet cavity 3; the toilet 1 is provided with a spiral scrubber Surface 12, the spiral washing surface 12 is arranged around the sewage outlet 11, and finally falls into the sewage outlet 11, the top-down rotation direction of the spiral washing surface 12 is consistent with the direction of the water guide channel from the flushing outlet. The holes extend in the same direction around the toilet bowl 1 .

The flushing structure of this embodiment does not have a jet water channel. The washing water flow is concentrated on the toilet 1. The rotation direction of the spiral washing surface 12 is the same as the extension direction of the water conduit from the flushing hole around the toilet 1, which is better for flushing water. With the guidance function, the water flow sprayed from the flushing hole will form a vortex for scrubbing, which enhances the momentum of the water flow. The whirlpool energy of the water is used to increase the flushing intensity, improve the flushing effect on the pool wall, and avoid scrubbing residues; in addition, the swirling flushing flow can This avoids the problem of water splashing due to direct impact; the swirling energy of the water is combined with the siphon discharge of the siphon elbow 2 to easily discharge dirt.

The water inlet chamber 3 is provided with a water inlet hole 32, and a horizontally arranged pressurized water surface 33 is provided in the water inlet chamber 3. The pressurized water surface 33 is located below the top wall of the water inlet chamber 3. One end of 33 close to the water inlet hole 32 and an end far away from the water inlet hole 32 are transitionally connected to the top wall of the water inlet cavity 3 through smooth slopes.

When flushing, water flows in from the water inlet hole 32, passes through the water inlet chamber 3, and then rushes out from the flush hole. When the water flow entering the water inlet chamber 3 through the water inlet hole 32 flows to the slope of the pressure water surface 33 close to one end of the water inlet hole 32, the turbulent water flow begins to be affected by the top slope and the pressure water surface 33, and the turbulence is suppressed and flows through The water flow in the pressurized water surface 33 will become laminar water, effectively controlling the turbulence phenomenon in the water inlet chamber 3, making the water flow out of the flushing hole smooth, helping to reduce water splashing on the pool wall, and solving the problem of easy splashing in the existing whirlpool flushing system. question.

8, in order to improve the turbulence reducing effect of the water inlet chamber 3 and make the rotational energy on the spiral scrubbing surface 12 more uniform, the water inlet chamber 3 of this embodiment preferably includes a first water inlet chamber 3a and a third independent water inlet chamber. There is a second water inlet chamber 3b, and the water conduit includes a first water conduit 4a and a second water conduit 4b. The first water inlet chamber 3a is provided with a first water inlet hole 32a, and the second water inlet chamber is provided with a second water inlet hole 32b. The first water conduit 4a passes through the rear end of the toilet 1 and is connected with the first water inlet chamber 3a through the first flushing hole 31a. The second water conduit 4b passes through the front end of the toilet 1 and is connected with the second water inlet chamber 3b through the second flushing hole 31b.

The first water inlet chamber 3a and the second water inlet chamber 3b are respectively arranged on both sides of the rear end of the toilet 1 to supply water to the first water conduit 4a and the second water conduit 4b respectively. The volumes of the two are small, and the structural changes in the cavity are different. The effect of flow velocity control and turbulence suppression is more obvious.

This embodiment adopts two-way water conduits, with sufficient washing water volume and wide washing area, which can ensure that the front end of the pool wall is fully washed and the dirt on the pool wall is not easy to remain.

In order to guide the water flow rushed out from the first flushing hole 31a and the second flushing hole 31b respectively to form a vortex and reduce the dispersion of whirlpool energy, the first water guide 4a is close to the first flushing hole 31a. A first water retaining rib 41a is provided on one side of the sewage outlet 11, and the first water retaining rib 41a is tangent to the second water conduit 4b; the second water conduit 4b is located in the second flushing hole. A second water retaining rib 41b is provided on the side of 31b close to the sewage outlet 11, and the second water retaining rib 41b is tangent to the first water conduit 4a.

When flushing, the water flow from the first flushing hole 31a and the second flushing hole 31b forms a vortex along the pool wall. The amount of washing water is sufficient and the impetus is strong, which increases the flushing force of the water flow on the pool wall and improves the washing effect. It also increases the speed of entering the sewage outlet 11, quickly generating siphon, which is more conducive to quick and smooth sewage discharge of the toilet.

In traditional whirlpool flushing, the flushing hole is provided at the rear end of the toilet 1. When flushing, the water rushes out at an extremely fast speed and flows rapidly along the pool wall to form a vortex. This kind of vortex flushing increases the flushing force of the water on the pool wall, which is stronger than the ordinary flushing method. However, the water flow is mainly concentrated at the rear end, and the front end is weak in washing force, and it is easy to wash the pool wall when the water pressure is too high. Causing splashes of dirt or water stains.

The spiral scrubbing surface 12 of this embodiment preferably includes a first spiral scrubbing surface 12a and a second spiral scrubbing surface 12b. The first spiral scrubbing surface 12a and the second spiral scrubbing surface 12b rotate in the same direction from top to bottom. Wherein, the outer edge of the first spiral washing surface 12a is partially connected to the inner edge of the second spiral washing surface 12b, and forms a smooth and continuous first spiral profile; the first spiral washing surface 12a The inner edge part is connected with the outer edge part of the second spiral washing surface 12b, and forms a smooth and continuous second spiral profile, and the second water retaining rib 41b is tangent to the first spiral profile. , the water flow rushing out from the second flushing hole 31b flushes forward under the guidance of the second water retaining rib 41b and the first spiral profile. On the one hand, the front end of the pool wall is more fully washed, and on the other hand, the front end of the pool wall is more fully washed. It can prevent water splashing caused by the collision of two streams of water when the water pressure is too high.

The bottom of the first spiral scrubbing surface 12a is tangent to the front edge of the water storage platform to help flush the dirt from the toilet point into the pipeline; the bottom of the second spiral scrubbing surface 12b is tangent to the dirt inlet. The rear edge of the port 211 is tangent, and this part of the kinetic energy can directly act on the sewage inlet 211 to help the pipeline discharge sewage more quickly.

The angle between the circumferential inner wall of the sewage outlet 11 and the vertical direction is not greater than 15°. The side walls of the sewage outlet 11 are vertically arranged to prevent dirt from continuing to spin when passing through it. After the water flows out of the flushing hole, it is guided into the sewage outlet 11 through the water conduit and the downward spiral washing surface 12. The water flow entering the sewage outlet 11 no longer continues to rotate, preventing the dirt from falling in the sewage outlet 11 from being deposited here. Circulation, the flushing water flows smoothly into the sewage inlet 211 and the shallow water platform 212 under the height difference, accelerating the discharge of sewage.

In this embodiment, the part of the first spiral scrubbing surface 12a located at the rear end of the sewage hole is a convex arc surface, which makes the water flow adhere to the wall, helping to increase the friction between the water flow and the pool wall when it flows through this area, improve the scrubbing intensity, and make up for this. Solve the problem of relatively weak flushing water flow and improve the cleaning effect.

The direction of rotation of the spiral scrubbing surface 12 of the present invention may be clockwise or counterclockwise in a plan view.

The direct flush siphon toilet of the present invention preferably includes a bladder 10, a seat panel 20 and a shell 30 that are molded by high-pressure injection molding. The bladder 10 and the shell 30 are respectively bonded to the seat panel 20. . Among them, the toilet 1, the siphon bend 2 and the flushing structure are directly formed on the bladder 10, and the flushing holes and water conduits are formed on the bladder 10 during the high-pressure grouting molding process.

The flushing structure of this embodiment also includes a water storage chamber 5 , and the water inlet hole 32 of the water inlet chamber 3 is connected with the water storage chamber 5 . The water storage cavity 5 may be directly formed on the bladder 10 , or may be a water storage cavity (water tank) housed in the outer shell 30 and located behind the bladder 10 .

When the water storage cavity 5 is directly formed on the bladder bag 10, in order to facilitate the demoulding of the bladder bag and ensure that there is a deep enough space at the rear end of the water storage cavity 5 for the installation of accessories such as a drain valve, the third end of the water storage cavity close to the toilet end is The bottom of the first cavity is coplanar with the water cover, and the water storage cavity is sunk at the bottom of the second cavity away from the toilet end. The first cavity bottom and the second cavity bottom transition through an arc surface, and the arc surface is tangent to the wall of the turning section.

Among them, the bottom of the first cavity near the toilet end of the water storage cavity is coplanar with the water cover, which can facilitate the removal of the bladder 10 from the mold. By sinking the second cavity bottom of the water storage cavity away from the toilet end, and transitioning the first cavity bottom and the second cavity bottom through a curved surface, it is possible to ensure that there is enough deep space at the rear end of the water storage cavity 5 for accessories such as drainage valves. While installing, ensure that the water cover that is coplanar with the bottom of the first cavity can be raised as much as possible to improve the anti-odor effect and increase the water storage capacity of the water trap.

The above is the preferred embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications are also regarded as It is the protection scope of the present invention.

Claims (10)

A direct flush siphon type sewage structure, which is characterized in that it includes a toilet and a siphon elbow, The bottom of the toilet is provided with a sewage outlet; The siphon elbow includes a sewage inlet section, a buffer section, a steering section and a sewage discharge section that are connected in sequence; The sewage inlet section is connected with the sewage outlet, and the sewage inlet section is provided with a sewage inlet and a shallow water platform below the sewage outlet, and the shallow water platform transitions smoothly from the front edge of the sewage inlet; One end of the dirt inlet section connected to the buffer section is inclined toward the rear and downward, and the buffer section is inclined toward the rear and upward and forms a smoothly transitioning water trap with the dirt inlet section. The water cover is located above the shallow water platform; The transverse width of the cross-section of the buffer section is greater than the longitudinal width, and the cross-sectional area of the buffer section gradually decreases along the sewage discharge direction; One end of the sewage discharge section away from the turning section extends forward and downward, and the cross-sectional area of the end of the sewage discharge section close to the turning section is larger than the cross-sectional area of the end of the sewage discharge section. The straight-through siphon sewage discharge structure according to claim 1, wherein the slopes at both ends of the turning section are gentler than the slope at the end of the sewage discharge section connected to the turning section. The straight-through siphon sewage structure according to claim 1, wherein the diameter of the solid ball that can pass through the siphon bend is greater than 48 mm. A direct flush siphon toilet, characterized by comprising a flushing structure and a direct flush siphon sewage structure according to any one of claims 1 to 3, The flushing structure includes a water inlet chamber provided at the rear end of the toilet, and a water conduit provided along the top edge of the toilet, with one end of the water conduit provided with a flushing hole connected to the water inlet chamber; The toilet is provided with a spiral scrubbing surface. The spiral scrubbing surface is arranged around the sewage outlet and finally falls into the sewage outlet. The spiral scrubbing surface rotates from top to bottom in the same direction as the water conduit. The flushing holes extend in the same direction around the toilet bowl. The direct flush siphon toilet according to claim 4, wherein the water inlet chamber is provided with a water inlet hole, the water inlet chamber is provided with a horizontally arranged pressurized water surface, and the pressurized water surface is located on the Under the top wall of the water inlet chamber, one end of the pressurized water surface close to the water inlet hole and one end far away from the water inlet hole are transitionally connected to the top wall of the water inlet chamber through smooth slopes. The direct flush siphon toilet according to claim 4 or 5, wherein the water inlet chamber includes a first water inlet chamber and a second water inlet chamber that are independent of each other, and the water guide channel includes a first water guide channel. and a second water conduit, the first water conduit passes through the rear end of the toilet and is connected to the first water inlet chamber through the first flushing hole, and the second water conduit passes through the front end of the toilet, and communicates with the second water inlet chamber through the second flushing hole; The first water conduit is provided with a first water retaining rib on the side of the first flushing hole close to the sewage outlet, and the first water retaining rib is tangent to the second water conduit; The second water conduit is provided with a second water retaining rib on the side of the second flushing hole close to the sewage outlet, and the second water retaining rib is tangent to the first water conduit. The direct flush siphon toilet according to claim 6, wherein the spiral scrubber surface includes a first spiral scrubber surface and a second spiral scrubber surface, and the first spiral scrubber surface and the second spiral scrubber surface are automatically The direction of rotation is the same from top to bottom; The outer edge portion of the first spiral scrubbing surface is partially connected to the inner edge portion of the second spiral scrubbing surface, and forms a smooth and continuous first spiral profile; the inner edge portion of the first spiral scrubbing surface is connected to the inner edge portion of the second spiral scrubbing surface. The outer edges of the second spiral scrubbing surface are partially connected and form a smooth and continuous second spiral profile, and the second water retaining ribs are tangent to the first spiral profile. The direct flush siphon toilet according to claim 7, wherein the bottom of the first spiral scrubbing surface is tangent to the front edge of the water storage platform, and the bottom of the second spiral scrubbing surface is tangent to the front edge of the water storage platform. The rear edge of the pollution inlet is tangent. The direct flush siphon toilet according to claim 8, wherein the portion of the first spiral scrubbing surface located at the rear end of the drain hole is a convex arc surface. The direct flush siphon toilet according to claim 4, wherein the angle between the circumferential inner wall of the sewage outlet and the vertical direction is no more than 15°, and the side walls of the sewage outlet are arranged vertically.

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