Sewage discharge system

Abstract

According to the technical scheme, the blowdown system is characterized in that the blowdown system comprises a blowdown box installed on a closestool blowdown opening, the blowdown box comprises a shell and a blowdown disc, a water outlet communicated with a blowdown pipeline of a closestool is formed in the blowdown box, and the water inlet end of the blowdown disc is communicated with the closestool blowdown opening and can rotate relative to the shell; the pollution discharge disc can be switched between an initial state and a pollution discharge state; a first matching part is arranged at the water outlet end of the sewage discharge disc, and a second matching part is arranged on the shell; in the switching process of the sewage discharging disc between the initial state and the sewage discharging state, the first matching part and the second matching part are in interference fit or transition fit, or the first matching part and the second matching part are in clearance fit, and the clearance is smaller than 5 mm; according to the utility model, the first matching part and the second matching part are arranged, so that the water outlet end is completely closed or basically closed in the rotation process of the sewage discharge disc, the main flushing water cannot be lost in advance in the rotation process, the utilization rate of water is improved, and a good sewage discharge effect is obtained.

Description

Technical Field

[0001] The utility model relates to the field of sanitary wares, and more specifically to a sewage discharge system. Background Art

[0002] At present, for the rear sewage discharge system of toilets on the market, in order to prevent the switching device from being stuck during rotation, a relatively large gap is usually left between the outlet of the switching device and the sewage discharge box. This causes a large amount of water to leak in advance during the rotation of the switching device during sewage discharge, resulting in poor sewage discharge effect and high water consumption. For example, the Chinese invention patent with the publication number CN114411909B discloses a sewage discharge box, a sewage discharge system and a toilet, in which Figure 7 as shown, there is a relatively large gap between the sewage discharge port 21 and the inner wall of the sewage discharge box 1. Summary of the Utility Model

[0003] To achieve the above object, the utility model provides the following technical solutions:

[0004] A sewage discharge system includes a sewage discharge box installed at the sewage discharge port of a toilet. The sewage discharge box includes a housing and a sewage discharge tray. The sewage discharge box is provided with a water outlet, and the water outlet is communicated with the sewage discharge pipe of the toilet. The water inlet end of the sewage discharge tray is communicated with the sewage discharge port of the toilet and can rotate relative to the housing. The sewage discharge tray can be switched between an initial state and a sewage discharge state. A first matching part is provided at the water outlet end of the sewage discharge tray, and a second matching part is provided on the housing. Wherein, when the sewage discharge tray is in the initial state, the first matching part and the second matching part cooperate to partially close or completely open the water outlet end of the sewage discharge tray. During the process of switching the sewage discharge tray between the initial state and the sewage discharge state, the first matching part and the second matching part are in interference fit or transition fit, or the first matching part and the second matching part are in clearance fit, and the clearance is less than 5 mm.

[0005] The utility model is further provided that: the first matching part and the second matching part are in clearance fit, and the clearance is less than 1 mm.

[0006] The utility model is further provided that: the first matching part is a soft closed ring fixed to the water outlet end of the sewage discharge tray, and the second matching part is the annular side wall of the housing. During the process of switching the sewage discharge tray between the initial state and the sewage discharge state, the closed ring can be in interference fit or transition fit or clearance fit with the annular side wall.

[0007] The utility model is further provided that: a pressure ring is fixed on the sewage discharge tray, and the pressure ring limits the closed ring on the sewage discharge tray.

[0008] The present utility model is further configured as follows: The housing further includes an overflow portion. When the sewage draining tray is in the initial state, the water outlet end of the sewage draining tray corresponds to the position of the overflow portion, and the water overflowing from the sewage draining tray can be discharged by the overflow portion.

[0009] The present utility model is further configured as follows: The housing protrudes radially outwards with a convex portion. When the sewage draining tray is in the initial state, a gap between the first engaging portion and the convex portion forms a notch for overflow, and the notch forms the overflow portion.

[0010] The present utility model is further configured as follows: The housing is provided with an overflow channel which extends upwards along the side wall of the housing. The overflow channel is in an inverted U shape. When the sewage draining tray is in the initial state, the water outlet end of the sewage draining tray is communicated with the overflow channel, and the overflow channel forms the overflow portion.

[0011] The present utility model is further configured as follows: When the sewage draining tray is in the sewage draining state, the water outlet end of the sewage draining tray is communicated with the water outlet. The water outlet is opened at the bottom or side of the sewage box.

[0012] The present utility model is further configured as follows: It further includes a driving assembly fixed on the housing. A rotating shaft is provided on the sewage draining tray. The rotating shaft passes through the housing and is connected to the driving assembly. The driving assembly drives the sewage draining tray to rotate through the rotating shaft.

[0013] The present utility model is further configured as follows: The sewage pipeline is a diverter.

[0014] Compared with the prior art, the present utility model has at least the following advantages:

[0015] 1. By adding a first engaging portion at the water outlet end of the sewage draining tray and providing a second engaging portion on the housing, during the process of the sewage draining tray rotating towards the sewage draining state, the first engaging portion and the second engaging portion are in interference fit or transition fit or small clearance fit, so that the water outlet end of the sewage draining tray is completely closed or basically closed, preventing the flushing water from leaking prematurely during rotation, improving the water utilization rate, thus achieving a good sewage draining effect, with less water consumption, low cost, simple structure and reliable function.

[0016] 2. When there is a notch between the sealing ring and the annular side wall, before the water supply unit supplies water into the toilet, the sewage draining tray needs to be rotated by a certain angle to make the sealing ring and the annular side wall completely closed or basically closed. By providing an upwardly extending overflow channel, when the sewage draining tray is in the initial state and the water supply unit supplies water for flushing the toilet, the water accumulated in the toilet will first fill up along the overflow channel upwards and will not flow away directly. Therefore, the water supply unit can be directly turned on for water supply without first rotating the sewage draining tray by a certain angle.

[0017] 3. The water outlet of the sewage box can be opened on the side of the sewage box, so that the sewage tray does not need to rotate to 180 degrees, which is beneficial to shortening the rotation stroke and improving the operation efficiency. Description of the Drawings

[0018] Figure 1 is a schematic diagram when the first embodiment is installed on the toilet;

[0019] Figure 2 is an exploded view when the first embodiment is installed on the toilet;

[0020] Figure 3 is an exploded view of the first embodiment;

[0021] Figure 4 is a schematic diagram when the toilet is not draining;

[0022] Figure 5 is a schematic diagram when the toilet is draining;

[0023] Figure 6 is a schematic diagram when the sewage tray is in the initial state;

[0024] Figure 7 is a schematic diagram when the sewage tray rotates towards the water outlet;

[0025] Figure 8 is a schematic diagram when the sewage tray rotates to the water outlet;

[0026] Figure 9 is Figure 6 an enlarged schematic diagram of part A in

[0027] Figure 10 is a schematic diagram of the second embodiment;

[0028] Figure 11 is a schematic diagram of the third embodiment.

[0029] Description of the Reference Numerals:

[0030] 1. Sewage box; 101. Housing; 102. Sewage tray; 2. Water outlet; 3. Sealing ring; 4. Annular side wall; 5. Pressing ring; 6. Convex part; 7. Notch; 8. Overflow channel; 9. Driving assembly; 10. Rotating shaft; 11. Convex edge; 12. Clamping ring; 13. Step surface; 14. Lobe; 15. Limiting groove; 16. Sealing ring; 17. Y-shaped ring; 18. Toilet; 19. Brush ring nozzle; 20. Sewage pipe; 21. Mounting frame; 22. Mounting plate. Detailed Description of the Embodiments

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. The components of the embodiments of the present utility model usually described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0032] In the description of the present utility model, it should also be noted that, unless otherwise clearly defined and limited, the terms "set", "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] First Embodiment:

[0034] A sewage disposal system, as Figures 1 to 5 shown, includes a sewage disposal box 1 installed at the sewage outlet of the toilet 18. The sewage disposal box 1 includes a housing 101 and a sewage disposal tray 102. An outlet 2 is provided on the sewage disposal box 1, and the outlet 2 is communicated with the sewage pipeline 20 of the toilet 18. The water inlet end of the sewage disposal tray 102 is communicated with the sewage outlet of the toilet 18 and can rotate relative to the housing 101, so that the sewage disposal tray 102 can be switched between an initial state and a sewage disposal state. When the water outlet end of the sewage disposal tray 102 rotates to the position of the outlet 2, the sewage disposal tray 102 is in the sewage disposal state, and the water in the toilet 18 flows from the sewage disposal tray 102 to the sewage pipeline 20. The sewage pipeline 20 can be a diverter.

[0035] As Figures 6 to 8 shown, a first mating part is provided at the water outlet end of the sewage disposal tray 102, and a second mating part is provided on the housing 101. Among them, when the sewage disposal tray 102 is in the initial state, the first mating part and the second mating part cooperate to partially close or fully open the water outlet end of the sewage disposal tray 102; during the process of the sewage disposal tray 102 switching between the initial state and the sewage disposal state, the first mating part and the second mating part are in interference fit or transition fit, or the first mating part and the second mating part are in clearance fit, and the clearance is less than 5 mm, so that water will not flow out or only flow out in a small amount when the sewage disposal tray 102 rotates; the specific clearance size can be set according to requirements. In this embodiment, the first mating part and the second mating part are in clearance fit, and the clearance is specifically less than 1 mm.

[0036] The first matching part is a soft closed ring 3 fixed to the water outlet end of the drain tray 102, and the second matching part is the annular side wall 4 of the shell 101. The annular side wall 4 is arc-shaped and is coaxially arranged with the drain tray 102. When the drain tray 102 switches between the initial state and the drain state, the closed ring 3 can be interference fit or transition fit, or a small gap fit with the annular side wall 4 to completely or partially close the water outlet end of the drain tray 102. The closed ring 3 is a rubber ring. The closed ring 3 and the annular side wall 4 are interference fit to achieve complete fit, or a very small gap fit, so that during the rotation of the drain tray 102, the annular side wall 4 can completely close the water outlet end of the drain tray 102 or partially close a small amount of water leakage. The closed ring 3 is flexible and can avoid foreign matter by deformation during rotation, so that the drain tray 102 will not get stuck during rotation.

[0037] like Figure 6 and Figure 9 As shown, a pressure ring 5 is fixed on the drain pan 102, and the pressure ring 5 limits the closed ring 3 on the drain pan 102. The closed ring 3 is sleeved on the drain pan 102, and the bottom is fitted with the convex edge 11 on the drain pan 102. A clamping ring 12 protrudes inward from the top of the pressure ring 5, and the pressure ring 5 is sleeved on the outside of the closed ring 3, and the clamping ring 12 is fitted with the top of the step surface 13 on the outside of the closed ring 3. The pressure ring 5 is then locked with the drain pan 102 by screws to fix the closed ring 3; and a lug 14 protrudes on the side wall of the closed ring 3, and a limiting groove 15 cooperating with the lug 14 is opened at the bottom of the pressure ring 5, and the lug 14 is clamped in the limiting groove 15, so that the closed ring 3 does not rotate.

[0038] When the drain pan 102 is in the initial state, the water outlet end of the drain pan 102 is partially closed and faces upward. During the process of the drain pan 102 switching to the drain state, that is, rotating toward the water outlet 2, the water outlet end of the drain pan 102 is completely closed or partially closed with a small amount of water leakage. When the water outlet end of the drain pan 102 rotates to the water outlet 2 of the shell 101, the drain pan 102 is connected to the water outlet 2, and the water in the toilet 18 flows through the drain pan 102 and is discharged from the water outlet 2 to the sewage pipe 20.

[0039] The shell 101 also includes an overflow portion. When the drain pan 102 is in an initial state, the water outlet end of the drain pan 102 corresponds to the position of the overflow portion, so that the water outlet end of the drain pan 102 is partially closed, and water overflowing from the drain pan 102 can be discharged from the overflow portion.

[0040] A convex portion 6 protrudes radially outward on the annular side wall 4 of the shell 101. When the drain pan 102 is in the initial state, the gap between the first matching portion and the convex portion 6 forms a notch 7 for overflow. The notch 7 forms an overflow portion. The overflow portion is provided to prevent the water in the toilet 18 from overflowing and flowing onto the bathroom floor. During the rotation of the drain pan 102 toward the water outlet 2, the drain pan 102 moves away from the convex portion 6 to make the notch 7 disappear, and the closing ring 3 and the annular side wall 4 are completely closed or semi-closed with a small amount of water leakage.

[0041] like Figure 2 and Figure 3 As shown, the sewage discharge system also includes a driving component 9 fixed on the shell 101, and a rotating shaft 10 is arranged on the sewage discharge plate 102. The rotating shaft 10 is located at the rotation center of the sewage discharge plate 102. The rotating shaft 10 passes through the shell 101 and is connected to the driving component 9. The driving component 9 drives the sewage discharge plate 102 to rotate through the rotating shaft 10. The driving component 9 can drive the rotating shaft 10 by a motor, by a cylinder, or by water pressure and a piston.

[0042] In this embodiment, the water outlet 2 is opened at the bottom of the annular side wall 4 of the sewage box 1. When the sewage tray 102 is in the initial state, the water outlet end is vertically upward. After the sewage tray 102 rotates to the sewage discharge state, the water outlet end is aligned with the water outlet 2.

[0043] The sewage box 1 is fixed to the mounting plate 22 at the rear end of the toilet 18 through the mounting frame 21. A water inlet is opened on the side wall of the sewage box 1. A sealing ring is connected between the water inlet and the sewage outlet of the toilet 18. The water inlet end of the sewage tray 102 is rotatably connected to the water inlet of the sewage box 1 through the Y-ring 17, thereby communicating with the sewage outlet of the toilet 18. A small Y-ring is also connected between the rotating shaft 10 of the sewage tray 102 and the drive assembly 9.

[0044] In other embodiments, in addition to using the annular side wall 4 of the drain box 1 to close the water outlet end of the drain tray 102, a baffle can also be separately provided to close and open the water outlet end of the drain tray 102. The baffle is hinged on the drain tray 102. During the rotation process, the distance between the baffle and the side wall of the drain box 1 makes it impossible to open the baffle. When the drain tray 102 rotates downward to be aligned with the water outlet 2, the water outlet 2 provides space for the baffle to open.

[0045] In this embodiment, a water supply unit is also included, and the water supply unit includes a brush ring water path and a brush ring nozzle 19. The brush ring water path continuously flushes the pot surface of the toilet 18 through the brush ring nozzle 19. The water supply unit can also be a main flushing water path or an auxiliary flushing water path.

[0046] The working process of the utility model is as follows:

[0047] When the toilet 18 flushes, the sewage discharge tray 102 first rotates by a certain angle, so that after the sealing ring 3 leaves the convex part 6, it fits completely with the annular side wall 4 or has only a very small gap, completely closing or basically closing the water outlet end of the sewage discharge tray 102. The brush ring waterway continuously flushes the pot surface of the toilet 18, and the flushing water converges in the toilet 18 to raise the water level line. At this time, continue to rotate the sewage discharge tray 102 until the water outlet end of the sewage discharge tray 102 is communicated with the water outlet 2 of the housing 101. Under the action of gravity, the water converged in the toilet 18 quickly drains from the sewage pipe 20, taking away the dirt. After the sewage discharge is completed, the sewage discharge tray 102 rotates reversely to return to the initial state, and the brush ring nozzle 19 continuously supplies water to form a water seal at the bottom of the toilet 18.

[0048] Second embodiment:

[0049] A sewage discharge system, as Figure 10 shown, the difference from the first embodiment is that in this embodiment, the water outlet 2 of the sewage discharge box 1 is opened on the side of the sewage discharge box 1, specifically between the bottom direction of the annular side wall 4 and the horizontal direction. When the sewage discharge tray 102 rotates to align the water outlet end with the water outlet 2, the rotation angle is less than 180 degrees, which is beneficial to shortening the rotation stroke; in this embodiment, the sewage pipe 20 of the toilet 18 is a displacer.

[0050] The parts not described above are the same as those in the first embodiment and will not be elaborated.

[0051] Third embodiment:

[0052] A sewage discharge system, as Figure 11 shown, the difference from the first embodiment is that an overflow channel 8 is provided on the annular side wall 4 of the housing 101. The overflow channel 8 extends upward along the annular side wall, and the overflow channel is in an inverted U shape. When the sewage discharge tray 102 is in the initial state, the outlet of the sealing ring 3 is communicated with the overflow channel 8, and the overflow channel forms an overflow part. The overflowing water will flow to the overflow channel 8. The top of the overflow channel 8 has a sealing plug, and the water can flow out from the gap between the top of the overflow channel 8 and the sealing plug. During the process of the sewage discharge tray 102 rotating towards the water outlet 2, an interference fit, a transition fit, or a small clearance fit is formed between the sealing ring 3 and the annular side wall 4.

[0053] Since when the toilet 18 flushes, the water overflowing from the water outlet end of the sewage discharge tray 102 will first flow to the overflow channel 8 and will not flow away directly. Therefore, at the beginning of sewage discharge, the brush ring nozzle 19 can be directly opened to supply water, without the need to first rotate the sewage discharge tray 102 by a certain angle as in the first embodiment.

[0054] The parts not described above are the same as those in the first embodiment and will not be elaborated.

[0055] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the design concept of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A sewage disposal system, comprising a sewage disposal box installed at the sewage outlet of a toilet, characterized in that: The sewage discharge box includes a housing and a sewage discharge tray. An outlet is provided on the sewage discharge box, and the outlet is communicated with the sewage discharge pipe of the toilet. The water inlet end of the sewage discharge tray is communicated with the sewage outlet of the toilet and can rotate relative to the housing. The sewage discharge tray can be switched between an initial state and a sewage discharge state. A first mating part is provided at the water outlet end of the sewage discharge tray, and a second mating part is provided on the housing. Wherein, during the process of the sewage discharge tray switching between the initial state and the sewage discharge state, the first mating part and the second mating part are in interference fit or transition fit, or the first mating part and the second mating part are in clearance fit, and the clearance is less than 5 mm.

2. The sewage disposal system according to claim 1, wherein: The first mating part and the second mating part are in clearance fit, and the clearance is less than 1 mm.

3. A sewage system according to claim 1, characterized in that: The first mating part is a soft closed ring fixed to the water outlet end of the sewage discharge tray, and the second mating part is the annular side wall of the housing. During the process of the sewage discharge tray switching between the initial state and the sewage discharge state, the closed ring can be in interference fit, transition fit or clearance fit with the annular side wall.

4. A sewage disposal system according to claim 3, characterized in that: A pressure ring is fixed on the sewage discharge tray, and the pressure ring limits the closed ring on the sewage discharge tray.

5. A sewage system according to claim 1, characterized in that: The housing further includes an overflow part. When the sewage discharge tray is in the initial state, the water outlet end of the sewage discharge tray corresponds to the position of the overflow part, and the water overflowing from the sewage discharge tray can be discharged by the overflow part.

6. A sewage system according to claim 5, characterized in that: The housing protrudes radially outward with a convex part. When the sewage discharge tray is in the initial state, the gap between the first mating part and the convex part forms a notch for overflow, and the notch forms the overflow part.

7. A sewage system according to claim 5, characterized in that: The housing is provided with an overflow channel, and the overflow channel extends upward along the side wall of the housing. The overflow channel is in an inverted U shape. When the sewage discharge tray is in the initial state, the water outlet end of the sewage discharge tray is communicated with the overflow channel, and the overflow channel forms the overflow part.

8. A sewage system according to claim 1, characterized in that: When the sewage discharge tray is in the sewage discharge state, the water outlet end of the sewage discharge tray is connected to the outlet. The outlet is provided at the bottom or side of the sewage discharge box.

9. The sewage disposal system according to claim 1, characterized in that: It further includes a driving component fixed on the housing. A rotating shaft is provided on the sewage discharge tray, and the rotating shaft passes through the housing and is connected to the driving component. The driving component drives the sewage discharge tray to rotate through the rotating shaft.

10. A sewage system according to claim 1, characterized in that: The sewage discharge pipe is a displacer.

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