Two-way water pumping mechanism and pedestal pan formed by same

Abstract

The utility model discloses a two-way water pumping mechanism and a pedestal pan formed by the same, the two-way water pumping mechanism comprises a pump body installed in the pedestal pan, the pump body is adaptively and hermetically connected with a valve body, the pump body is provided with a first water inlet, a second water inlet, a first water outlet and a second water outlet, the first water inlet is communicated with the first water outlet, and the second water inlet is communicated with the second water outlet. A water inlet flow channel communicated with the first water outlet and the second water outlet is formed in the valve body, and a flushing water port and a flushing water outlet which are communicated with a flushing water channel and a flushing water channel of the toilet respectively are formed in the side face of the valve body. A flow control assembly used for controlling connection or disconnection of a water path among the flushing water opening, the flushing and draining opening and the water inlet flow channel is further arranged in the valve body. According to the utility model, only one water pumping mechanism is needed to realize water supply of the flushing waterway and the flushing drainage waterway of the pedestal pan, so that the water supply waterway in the pedestal pan is optimized, and the manufacturing cost of the pedestal pan is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of toilets, in particular to a dual-channel water pumping mechanism and a toilet constituted thereby. Background Art

[0002] Toilets are indispensable living facilities in every family. Toilets are generally divided into squatting type or sitting type, and different toilets are installed according to different family needs. The sewage outlet at the bottom of the toilet is connected to the sewer pipeline. There is a curved flow channel inside the toilet that is connected to the sewage outlet. An annular flushing water channel is provided at the upper edge of the cavity of the toilet. After the excrement is discharged through the curved flow channel, water will be stored in the flow channel for liquid seal to prevent the odor in the sewer pipeline from being emitted through the curved flow channel.

[0003] Currently, there is one flushing water channel and one flushing and drainage water channel inside the toilet. The flushing water channel flushes the sundries on the inner wall of the toilet to the bottom. The amount of water in the flushing and drainage water channel is relatively large, and it takes away the excrement at the bottom of the toilet together with the flushing sewage and sundries to the sewer pipeline. The flushing water channel and the flushing and drainage water channel are respectively supplied with water by two pumps in the water tank. The water supply by the two pumps complicates the water channel structure inside the toilet, and the corresponding manufacturing cost of the toilet is also higher. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a dual-channel water pumping mechanism and a toilet constituted thereby, which can realize the water supply for the flushing water channel and the flushing and drainage water channel of the toilet with only one water pumping mechanism, optimize the water supply water channel inside the toilet, and reduce the manufacturing cost of the toilet.

[0005] To solve the above technical problems, the utility model adopts the following solutions:

[0006] A dual-channel water pumping mechanism includes a pump body installed inside the toilet. The pump body is hermetically connected with a valve body in a matching manner. The pump body is provided with a first water inlet, a second water inlet, a first water outlet, and a second water outlet. The first water inlet is connected to the first water outlet, and the second water inlet is connected to the second water outlet. An incoming water flow channel connected to the first water outlet and the second water outlet is provided inside the valve body. A flushing water outlet and a flushing and drainage water outlet respectively connected to the flushing water channel and the flushing and drainage water channel of the toilet are provided on the side surface of the valve body. A flow control component for controlling the water channel connection or blockage between the flushing water outlet, the flushing and drainage water outlet and the incoming water flow channel is also provided inside the valve body.

[0007] In this solution, the dual-channel pump water mechanism is composed of two parts, namely a pump body and a valve body, and is installed inside the toilet. The pump body is provided with a first water inlet, a second water inlet, a first water outlet, and a second water outlet. The pump body pumps water to the two water outlets through the two water inlets respectively. An inlet water flow channel that is simultaneously connected to the two water outlets is provided inside the valve body. The water absorption through the two water inlets can increase the water pumping volume of the dual-channel pump water mechanism. A flushing water outlet and a flushing and drainage water outlet are provided on the valve body. The flushing water outlet is connected to the flushing water path of the toilet, and the flushing and drainage water outlet is connected to the flushing and drainage water path of the toilet. And a flow control component for controlling the on-off of the water path is provided on the water paths where the flushing and drainage water outlet is connected to the inlet water flow channel and the flushing water outlet is connected to the inlet water flow channel. When the toilet needs to flush its inner wall, the flow control component controls the water path between the flushing water outlet and the inlet water flow channel to be connected, and the water inside the inlet water flow channel enters the flushing water path to flush the inner wall of the toilet with a small water flow. When it is necessary to flush and discharge the excrement inside the toilet, the flow control component controls the water path between the flushing and drainage water path and the inlet water flow channel to be connected, and the water inside the inlet water flow channel enters the flushing and drainage water path to flush and discharge the excrement inside the toilet with a large water flow, taking the excrement away to the sewer pipeline. After the flushing and discharging are completed, the pump body continues to pump water. At this time, the flow control component controls the inlet water flow channel to be connected to the flushing water path again, and the flushing water outlet continues to supply water to the toilet to realize water sealing inside the toilet, preventing the odor in the sewer pipeline from spreading outside the toilet and polluting the environment. This technical solution can supply water to the flushing water path and the flushing and drainage water path inside the toilet respectively through a dual-channel pump water mechanism, reducing the number of pumps, thereby optimizing the water supply water path inside the toilet. The reduction in the number of pumps reduces the manufacturing cost of the toilet.

[0008] Optionally, an upper end cover and a lower end cover are respectively connected to the upper and lower ends of the pump body. One ends of the upper end cover and the lower end cover are hermetically connected to the valve body. The first water outlet and the second water outlet are respectively provided at one ends of the upper end cover and the lower end cover connected to the valve body. A pump water component for pumping the source water of the first water inlet and the second water inlet to the first water outlet and the second water outlet respectively is provided between the upper end cover and the lower end cover.

[0009] Optionally, the pump water component includes a rotor, a stator, a first impeller, and a second impeller. The rotor is rotatably arranged inside the stator. A rotating shaft is provided in the middle of the rotor. The first impeller is arranged at the upper end of the rotating shaft, and the second impeller is arranged at the lower end of the rotating shaft. A partition is provided between the rotor and the stator. An upper sealing plate is provided above the partition, and a lower sealing plate is provided below the partition.

[0010] Optionally, a first sealing ring and a second sealing ring are circumferentially embedded at the upper and lower ends of the rotating shaft. Between the first sealing ring and the second sealing ring, there are a first bearing and a second bearing sleeved on the rotating shaft. The first bearing is located between the rotating shaft and the upper sealing plate, and the second bearing is located between the rotating shaft and the partition plate. The upper end of the partition plate is circumferentially pressed between the upper end cover and the pump body. A third sealing ring is embedded at the top of the partition plate, and a fourth sealing ring is embedded at the lower end of the partition plate. The fourth sealing ring is pressed between the partition plate and the lower sealing plate. The lower sealing plate is circumferentially pressed between the pump body and the lower end cover. A fifth sealing ring is embedded at the bottom surface of the lower sealing plate, and the fifth sealing ring is pressed between the lower sealing plate and the lower end cover.

[0011] Optionally, the upper end cover and the valve body are fixedly connected by a first screw, and the lower end cover and the valve body are fixedly connected by a second screw. A sixth sealing ring is circumferentially embedded at one end of the upper end cover connected to the valve body, and a seventh sealing ring is circumferentially embedded at one end of the lower end cover connected to the valve body.

[0012] Optionally, a first water inlet, a first water outlet cavity, and a second water outlet cavity are provided in the valve body. The first water inlet connects the water path between the water inlet flow channel and the first water outlet cavity. The second water outlet cavity is connected to the flushing and drainage port. The flow control assembly controls the connection or blockage of the water path between the first water outlet cavity, the flushing water port, and the second water outlet cavity.

[0013] Optionally, the flow control assembly includes a control rod and a return spring. A pressing plate is fixed to the upper end of the control rod. An extension plate is provided at the lower end of the control rod. A second water inlet communicating with the first water outlet cavity is provided on the extension plate. A first water passage cavity is formed between the pressing plate and the control rod. A valve cover is provided on the top of the valve body. A second water passage cavity is formed between the valve cover and the pressing plate. A first water hole communicating with the second water passage cavity is provided on the valve cover. One end of the return spring acts on the valve cover, and the other end acts on the pressing plate. A second water hole communicating with the first water passage cavity is provided on the pressing plate. A support sleeve is sleeved outside the control rod. A pressure sensing cavity communicating with the first water passage cavity is formed between the support sleeve and the control rod. There is a gap between the support sleeve and the control rod. A second water outlet cavity is formed between the control rod and the inner wall of the valve body. A one-way water flow control structure for controlling the connection or blockage of the first water outlet cavity and the first water passage cavity is provided at the lower end of the control rod. A third water inlet communicating with the water path between the first water passage cavity and the pressure sensing cavity is opened on the control rod.

[0014] Optionally, an eighth sealing ring is pressed between the valve cover and the valve body. A guide cylinder connected to the inner wall of the valve body is circumferentially provided at the lower end of the control rod. A ninth sealing ring is circumferentially embedded in the control rod. A guide plate connected to the inner wall of the valve body is provided on one side of the extension plate.

[0015] A toilet bowl, comprising a dual-channel water pumping mechanism described in any one of the above, further comprising a toilet bowl main body. The interior of the toilet bowl main body has a cavity and a water tank. A washing and discharging port is provided below the cavity. A flushing and discharging flow channel is provided below the washing and discharging port. A sewage discharge port communicating with the flushing and discharging flow channel is provided at the bottom of the toilet bowl main body. The sewage discharge port is communicated with the sewer pipeline. A flushing water channel is circumferentially provided above the cavity. A flushing and discharging water channel communicating with the flushing and discharging flow channel is provided inside the toilet bowl main body. The dual-channel water pumping mechanism is arranged at the bottom of the inner cavity of the water tank. The flushing water outlet of the dual-channel water pumping mechanism is communicated with the flushing water channel. The flushing and discharging water outlet is connected with a conduit located inside the water tank. The lower end of the conduit is communicated with the flushing and discharging water channel. The top of the conduit is higher than the liquid level of the water tank. Air holes higher than the liquid level are provided on the side wall of the conduit.

[0016] Optionally, the flushing water outlet is connected with a flushing water pipe. A water passing flow channel communicating with the flushing water channel is provided on the toilet bowl main body. A first plug is provided at the water inlet end of the water passing flow channel. The first plug is communicated with the flushing water pipe. A flushing and discharging water pipe is provided at the lower end of the conduit. A second plug is provided at the water inlet end of the flushing and discharging water channel. The second plug is communicated with the flushing and discharging water pipe. The flushing and discharging water outlet is communicated with the upper end of the conduit through a connecting pipe.

[0017] The beneficial effects of the present utility model are as follows:

[0018] 1. In the present utility model, a dual-channel water pumping mechanism is installed inside the water tank of the toilet bowl. The dual-channel water pumping mechanism has two water inlets and two water outlets, and can pump water to the flushing water channel and the flushing and discharging water channel of the toilet bowl respectively. When the toilet bowl needs to flush its inner wall, the flow control component controls the water channel between the flushing water outlet and the water inlet flow channel to be communicated, and the water inside the water inlet flow channel enters the flushing water channel to flush the inner wall of the toilet bowl with a small flow rate. When it is necessary to flush and discharge the excrement inside the toilet bowl, the flow control component controls the water channel between the flushing and discharging water channel and the water inlet flow channel to be communicated, and the water inside the water inlet flow channel enters the flushing and discharging water channel to flush and discharge the excrement inside the toilet bowl with a large flow rate, taking the excrement away to the sewer pipeline. After the flushing and discharging is completed, the pump body continues to pump water. At this time, the flow control component controls the water inlet flow channel and the flushing water channel to be communicated again, and the flushing water outlet continues to supply water to the toilet bowl to realize water seal inside the toilet bowl, preventing the odor in the sewer pipeline from being emitted to the outside of the toilet bowl to pollute the environment. This technical solution can supply water to the flushing water channel and the flushing and discharging water channel inside the toilet bowl respectively through a single dual-channel water pumping mechanism, reducing the number of pumps, thereby optimizing the water supply water channel inside the toilet bowl. The reduction in the number of pumps reduces the manufacturing cost of the toilet bowl. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the dual-channel water pumping mechanism in the present utility model;

[0020] Figure 2 is a schematic assembly structural diagram of the dual-channel water pumping mechanism and the toilet bowl.

[0021] Figure numerals: 01-second water inlet, 02-second sealing ring, 03-lower end cover, 04-second impeller, 05-rotating shaft, 06-second bearing, 07-fifth sealing ring, 08-lower sealing plate, 09-fourth sealing ring, 10-partition, 11-stator, 12-rotor, 13-pump body, 14-first bearing, 15-upper sealing plate, 16-third sealing ring, 17-upper end cover, 18-first impeller, 19-first sealing ring, 20-first water inlet, 21-first water outlet, 22-sixth sealing ring, 23-first screw, 24-valve cover, 25-first water hole, 26-second water passage chamber, 27-eighth sealing ring, 28-reset spring, 29-second water hole, 30-pressing plate, 31-first water passage chamber, 32-side plate, 33-third water passage, 34-pressure sensing chamber, 35-support sleeve, 36-second water passage chamber, 37-eighth sealing ring, 38-reset spring, 39-second water hole, 40-pressure plate, 41-first water passage chamber, 42-side plate, 43-third water passage, 44-pressure sensing chamber, 45-support sleeve, 46-second water passage chamber, 47-eighth sealing ring, 48-reset spring, 49-second water hole, 50-pressure plate, 51-first water passage chamber, 52-side plate, 53-third water passage, 54-pressure sensing chamber, 55-support sleeve, 56-second water passage chamber, 57-second water passage chamber, 58-second water passage chamber, 59-second water passage chamber, 60-second water passage chamber, 61-second water passage chamber, 6 6-gap, 37-flush outlet, 38-second water outlet, 39-control rod, 40-ninth sealing ring, 41-one-way diaphragm, 42-flushing outlet, 43-water inlet, 44-second water outlet, 45-extension plate, 46-guide plate, 47-valve body, 48-first water outlet, 49-first water outlet, 50-second water outlet, 51-seventh sealing ring, 52-second screw, 53-inlet Water flow channel, 54-toilet body, 55-cavity, 56-flushing water channel, 57-water flow channel, 58-first plug, 59-flushing water pipe, 60-connecting pipe, 61-water tank, 62-air hole, 63-conduit, 64-dual-way water pumping mechanism, 65-guide cylinder, 66-flushing drainage pipe, 67-second plug, 68-flushing drainage channel, 69-flushing flow channel, 70-drainage outlet, 71-washing outlet. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below in conjunction with the embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0023] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inside", "outside", "front", "back", "top", "bottom", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0024] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "arranged", "provided with", "installed", "connected", and "coupled" 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.

[0025] Embodiment 1

[0026] A dual-channel water pumping mechanism 64 includes a pump body 13 installed inside a toilet. The pump body 13 is hermetically connected to a valve body 47 in a matching manner. The pump body 13 is provided with a first water inlet 20, a second water inlet 01, a first water outlet 21, and a second water outlet 50. The first water inlet 20 is communicated with the first water outlet 21, and the second water inlet 01 is communicated with the second water outlet 50. An inlet water flow channel 53 communicated with the first water outlet 21 and the second water outlet 50 is arranged inside the valve body 47. A flushing water outlet 42 and a flushing and drainage water outlet 37 communicated with the toilet flushing water path 56 and the flushing and drainage water path 68 respectively are arranged on the side surface of the valve body 47. A flow control assembly for controlling the water path communication or blocking between the flushing water outlet 42, the flushing and drainage water outlet 37 and the inlet water flow channel 53 is further arranged inside the valve body 47.

[0027] In this embodiment, as Figure 1As shown in the figure, the dual-channel pump water mechanism 64 is composed of two parts: a pump body 13 and a valve body 47, and is installed inside the toilet. The pump body 13 has a first water inlet 20, a second water inlet 01, a first water outlet 21, and a second water outlet 50. The pump body 13 pumps water to the two water outlets through the two water inlets respectively. Inside the valve body 47, there is a water inlet flow channel 53 that is simultaneously connected to the two water outlets. The water absorption at the two water inlets can increase the water pumping volume of the dual-channel pump water mechanism 64. On the valve body 47, there are a flushing water outlet 42 and a flushing and drainage water outlet 37. The flushing water outlet 42 is connected to the flushing water path 56 of the toilet, and the flushing and drainage water outlet 37 is connected to the flushing and drainage water path 68 of the toilet. And on the water paths where the flushing and drainage water outlet 37 is connected to the water inlet flow channel 53 and the flushing water outlet 42 is connected to the water inlet flow channel 53, there are flow control components for controlling the on-off of the water path. When the toilet needs to flush its inner wall, the flow control component controls the water path between the flushing water outlet 42 and the water inlet flow channel 53 to be connected, and the water inside the water inlet flow channel 53 enters the flushing water path 56 to perform a small-flow flushing on the inner wall of the toilet. When it is necessary to flush and discharge the excrement inside the toilet, the flow control component controls the water path between the flushing and drainage water path 68 and the water inlet flow channel 53 to be connected, and the water inside the water inlet flow channel 53 enters the flushing and drainage water path 68 to perform a large-flow flushing on the excrement, sewage, and sundries inside the toilet during flushing, taking the excrement and sundries away to the sewer pipeline. After the flushing and discharging are completed, the pump body 13 continues to pump water. At this time, the flow control component controls the water inlet flow channel 53 to be connected to the flushing water path 56 again, and the flushing water outlet 42 continues to supply water to the toilet to achieve water sealing inside the toilet, preventing the odor in the sewer pipeline from spreading to the outside of the toilet and polluting the environment. This solution can supply water to the flushing water path 56 and the flushing and drainage water path 68 inside the toilet respectively through a single dual-channel pump water mechanism 64, reducing the number of pumps, thereby optimizing the water supply water path inside the toilet. The reduction in the number of pumps reduces the manufacturing cost of the toilet.

[0028] Further, an upper end cover 17 and a lower end cover 03 are respectively connected to the upper and lower ends of the pump body 13. One ends of the upper end cover 17 and the lower end cover 03 are hermetically connected to the valve body 47. The first water outlet 21 and the second water outlet 50 are respectively provided at the ends of the upper end cover 17 and the lower end cover 03 connected to the valve body 47. Between the upper end cover 17 and the lower end cover 03, there is a water pumping component for pumping the source water at the first water inlet 20 and the second water inlet 01 to the first water outlet 21 and the second water outlet 50 respectively.

[0029] Further, the water pumping component includes a rotor 12, a stator 11, a first impeller 18, and a second impeller 04. The rotor 12 is rotatably arranged inside the stator 11. A rotating shaft 05 is provided in the middle of the rotor 12. The first impeller 18 is arranged at the upper end of the rotating shaft 05, and the second impeller 04 is arranged at the lower end of the rotating shaft 05. A partition plate 10 is provided between the rotor 12 and the stator 11. An upper sealing plate 15 is provided above the partition plate 10, and a lower sealing plate 08 is provided below the partition plate 10.

[0030] Further, a first sealing ring 19 and a second sealing ring 02 are circumferentially embedded at the upper and lower ends of the rotating shaft 05. Between the first sealing ring 19 and the second sealing ring 02, a first bearing 14 and a second bearing 06 sleeved on the rotating shaft 05 are provided. The first bearing 14 is located between the rotating shaft 05 and the upper sealing plate 15, and the second bearing 06 is located between the rotating shaft 05 and the partition plate 10. The upper end of the partition plate 10 is circumferentially pressed between the upper end cover 17 and the pump body 13. A third sealing ring 16 is embedded at the top of the partition plate 10, and a fourth sealing ring 09 is embedded at the lower end of the partition plate 10. The fourth sealing ring 09 is pressed between the partition plate 10 and the lower sealing plate 08. The lower sealing plate 08 is circumferentially pressed between the pump body 13 and the lower end cover 03. A fifth sealing ring 07 is embedded at the bottom surface of the lower sealing plate 08, and the fifth sealing ring 07 is pressed between the lower sealing plate 08 and the lower end cover 03.

[0031] Further, the upper end cover 17 and the valve body 47 are fixedly connected by a first screw 23, and the lower end cover 03 and the valve body 47 are fixedly connected by a second screw 52. A sixth sealing ring 22 is circumferentially embedded at one end of the upper end cover 17 connected to the valve body 47, and a seventh sealing ring 51 is circumferentially embedded at one end of the lower end cover 03 connected to the valve body 47.

[0032] Specifically, the upper end and the lower end of the pump body 13 are respectively fixedly connected with an upper end cover 17 and a lower end cover 03. The right ends of the upper end cover 17 and the lower end cover 03 are both adaptively connected to the valve body 47, and are respectively fastened by a first screw 23 and a second screw 52. A sixth sealing ring 22 and a seventh sealing ring 51 are respectively provided between the upper end cover 17 and the valve body 47 and between the lower end cover 03 and the valve body 47, so as to improve the sealing performance between the pump body 13 and the valve body 47 and avoid water leakage at the first water outlet 21 and the second water outlet 50.

[0033] A partition plate 10 is pressed between the upper end cover 17 and the pump body 13. A third sealing ring 16 is embedded in the upper end face of the partition plate 10. The third sealing ring 16 is pressed between the upper end cover 17 and the partition plate 10 to prevent water at the first water inlet 20 from entering the motor inside through the installation gap 36. The lower sealing plate 08 is pressed between the lower end cover 03 and the pump body 13. A fifth sealing ring 07 is embedded in the bottom surface of the lower sealing plate 08 to prevent water at the second water inlet 01 from entering the motor inside through the installation gap 36. The upper sealing plate 15 is circumferentially pressed between the upper end cover 17 and the partition plate 10. The upper end of the rotating shaft 05 penetrates through the upper sealing plate 15. A first bearing 14 is provided between the upper sealing plate 15 and the rotating shaft 05. The lower end of the partition plate 10 is recessed downward and inserted into the lower sealing plate 08. A fourth sealing ring 09 is pressed between the lower end of the partition plate 10 and the lower sealing plate 08. The partition plate 10 separates the rotor 12 and the stator 11. The lower end of the rotating shaft 05 penetrates through the lower part of the partition plate 10. A second bearing 06 is provided between the partition plate 10 and the lower part of the rotating shaft 05. The two bearings can ensure the flexibility and stability of the rotation of the rotor 12. The first impeller 18 and the second impeller 04 are respectively installed at the upper and lower ends of the rotating shaft 05. At the same time, a first sealing ring 19 is provided between the first impeller 18 and the rotating shaft 05, and a second sealing ring 02 is provided between the second impeller 04 and the rotating shaft 05. The rotor 12 and the stator 11 constitute a motor. The pump body 13 of the actual dual-channel water pumping mechanism 64 is a double-headed impeller pump. By controlling the rotation of the rotor 12 through the controller, the rotor 12 drives the rotating shaft 05 to rotate and then drives the two impellers to rotate, and pumps the water at the first water inlet 20 and the second water inlet 01 to the first water outlet 21 and the second water outlet 50 respectively, realizing the water pumping of the dual-channel water pumping mechanism 64. Pumping water from the two water inlets can increase the water output, and further increase the water supply to the toilet, making the flushing water volume of the toilet larger. By controlling the working power of the motor through the controller, the water volume entering the valve body 47 can be controlled. When flushing with a small amount of water, it can be started with a small power. When flushing and discharging the toilet with a large amount of water, it can be started with a large power.

[0034] Further, a first water passing port 49, a first water outlet chamber 48, and a second water outlet chamber 38 are provided in the valve body 47. The first water passing port 49 connects the water path between the water inlet flow channel 53 and the first water outlet chamber 48. The second water outlet chamber 38 is connected to the flushing and draining port 37. The flow control component controls the connection or blockage of the water path between the first water outlet chamber 48, the flushing water port 42, and the second water outlet chamber 38.

[0035] Further, the flow control component includes a control rod 39 and a return spring 28. A pressing plate 30 is fixed to the upper end of the control rod 39. An extension plate 45 is provided at the lower end of the control rod 39. A second water passing port 44 communicating with the first water outlet cavity 48 is provided on the extension plate 45. A first water passing cavity 31 is formed between the pressing plate 30 and the control rod 39. A valve cover 24 is provided at the top of the valve body 47. A second water passing cavity 26 is formed between the valve cover 24 and the pressing plate 30. A first water hole 25 communicating with the second water passing cavity 26 is provided on the valve cover 24. One end of the return spring 28 acts on the valve cover 24, and the other end acts on the pressing plate 30. A second water hole 29 communicating with the first water passing cavity 31 is provided on the pressing plate 30. A support sleeve 35 is sleeved outside the control rod 39. A pressure sensing cavity 34 communicating with the first water passing cavity 31 is formed between the support sleeve 35 and the control rod 39. A gap 36 is provided between the support sleeve 35 and the control rod 39. A second water outlet cavity 38 is formed between the control rod 39 and the inner wall of the valve body 47. A one-way water flow control structure for controlling the connection or blockage between the first water outlet cavity 48 and the first water passing cavity 31 is provided at the lower end of the control rod 39. A third water passing port 33 for connecting the waterways between the first water passing cavity 31 and the pressure sensing cavity 34 is opened on the control rod 39.

[0036] Further, an eighth sealing ring 27 is pressed between the valve cover 24 and the valve body 47. A guide cylinder 65 connected to the inner wall of the valve body 47 is provided circumferentially at the lower end of the control rod 39. A ninth sealing ring 40 is embedded circumferentially in the control rod 39. A guide plate 46 connected to the inner wall of the valve body 47 is provided on one side of the extension plate 45.

[0037] The specific working principle of the flow control component is as follows: a first water inlet chamber is provided inside the valve body 47, and a first water outlet 49 for connecting the water path between the water inlet channel 53 and the first water outlet chamber 48 is provided on the inner wall of the valve body 47, so that the water pumped to the water inlet channel 53 by the pump body 13 can directly enter the first water outlet chamber 48, and an extension plate 45 is integrally connected to the right side of the lower end of the control rod 39, and a second water outlet 44 is provided on the extension plate 45. When the second water outlet 44 is connected to the flushing water outlet 42, the water in the first water outlet chamber 48 enters the flushing water outlet 42 through the second water outlet 44, and is then transported to the flushing water path 56 of the toilet, and the extension plate 45 can move up and down with the control rod 39. When the control rod 39 moves up, it drives the extension plate 45 to move up. When the second water outlet 44 is connected to the flushing water outlet 42 When they are completely offset, the water path of the second water outlet 44 is basically blocked, and a guide plate 46 is provided on the left side of the extension plate 45. The guide plate 46 can ensure that the moving path of the extension plate 45 is always vertical. The control rod 39 is circumferentially provided with a guide cylinder 65 integrally formed with the inner wall of the valve body 47. The height of the guide cylinder 65 is lower than the bottom end of the flushing and draining outlet 37. The lower end of the control rod 39 is circumferentially embedded with a ninth sealing ring 40. The lower end of the control rod 39 is slidably sleeved inside the guide cylinder 65. The control rod 39 and the guide cylinder 65 can slide relative to each other in the vertical direction under the action of external force. After the lower end of the control rod 39 slides out of the top of the guide cylinder 65, the first water outlet chamber 48 facilitates the connection with the second water outlet chamber 38, and then the water in the first water outlet chamber 48 can enter the flushing and draining outlet 37, and then be transported to the flushing and draining channel 68 of the toilet.

[0038] The middle part of the control rod 39 has a hollow cavity. A side plate 32 is integrally formed on the side surface of the upper end of the control rod 39. The side plate 32 is L-shaped and is vertically arranged. At the top of the side plate 32, a pressing plate 30 is fixed. A first water passage cavity 31 is formed between the pressing plate 30 and the side plate 32. The pressing plate 30, the side plate 32 and the control rod 39 form a T-shaped structure. The side plate 32 is in sliding contact with the inner wall of the valve body 47. A support sleeve 35 connected to the inner wall of the valve body 47 is arranged below the side plate 32. The control rod 39 passes through the support sleeve 35, and the support sleeve 35 and the control rod 39 can slide relative to each other. There is a slight gap 36 between the support sleeve 35 and the control rod 39. A third water passage opening 33 is arranged at the bottom of the side plate 32. The second water passage opening 44 is located outside the control rod 39. A pressure sensing cavity 34 is formed between the side plate 32 and the support sleeve 35. The third water passage opening 33 connects the water path between the first water passage cavity 31 and the pressure sensing cavity 34. A second water passage cavity 26 is formed between the pressing plate 30 and the valve cover 24. The valve cover 24 is fixedly connected to the top of the valve body 47, and an eighth sealing ring 27 is pressed between the valve cover 24 and the top of the valve body 47. A first water hole 25 communicating with the second water passage cavity 26 and the external atmosphere is arranged at the top of the valve cover 24. A second water hole 29 communicating with the second water passage cavity 26 and the first water passage cavity 31 is opened on the pressing plate 30. The apertures of the first water hole 25 and the second water hole 29 are small. One end of the return spring 28 acts on the top surface of the pressing plate 30, and the other end acts on the bottom surface of the valve cover 24. The first water hole 25 and the second water hole 29 can prevent the internal air pressure from hindering the movement of the control rod 39. An inlet hole 43 is arranged at the lower end of the control rod 39. A one-way diaphragm 41 is fixed to the lower end of the control rod 39. The one-way diaphragm 41 controls the water to enter the first water passage cavity 31 only from the first water outlet cavity 48.

[0039] The controller is provided with the working powers of three sections of the motor. First of all, the controller controls the motor to start with a small power. The rotation speed of the motor is small, and the water intake from the first water inlet 20 and the second water inlet 01 is less. After the source water enters the first water outlet cavity 48 in the valve body 47 from the pump body 13, it pushes open the one-way diaphragm 41 and enters the first water passage cavity 31 and the pressure sensing cavity 34. The water pressure in the pressure sensing cavity 34 is the same as that in the first water passage cavity 31. The downward water pressure in the pressure sensing cavity 34 acts on the support sleeve 35, and the upward water pressure acts on the bottom surface of the side plate 32 and the bottom surface of the pressing plate 30. At this time, the water pressure cannot overcome the elastic force of the return spring 28 and the liquid level drop force in the second water passage cavity 26. At this time, the control rod 39 does not act. The second water passage opening 44 connects the water path between the first water outlet cavity 48 and the flushing water port 42. The dual-channel water pumping mechanism 64 can supply water to the flushing water path 56 of the toilet.

[0040] Next, the controller controls the motor to work at high power, sucking a large amount of water into the first water outlet chamber 48. Since the diameter of the flushing water port 42 is small and has a throttling effect, a large amount of water is located in the first water outlet chamber 48, thus generating backpressure. The water pressure in the first water outlet chamber 48 pushes open the one-way diaphragm 41, and the water enters the first water passing chamber 31 through the water inlet hole 43 and enters the pressure sensing chamber 34 through the third water passing port 33. The water pressure in the pressure sensing chamber 34 overcomes the elastic force of the return spring 28, that is, the liquid level drop force in the second water passing chamber 26, and pushes the side plate 32 and the pressing plate 30 upward, causing the side plate 32, the pressing plate 30, and the control rod 39 to move upward. The pressing plate 30 compresses the return spring 28. After the lower end of the control rod 39 slides out of the upper end of the guide cylinder 65, a large amount of water in the first water outlet chamber 48 enters the second water outlet chamber 38 and is conveyed to the flushing and drainage path 68 of the toilet through the flushing and drainage port 37. The flushing and drainage port 37 is a large-diameter water port, realizing a large amount of water flushing and drainage for the toilet. After the water in the first water outlet chamber 48 is discharged, the water volume decreases sharply. The one-way diaphragm 41 closes the water inlet hole 43. The water in the pressure sensing chamber 34 and the first water passing chamber 31 flows into the second water passing chamber 26 through the second water hole 29, generating a pressure relief effect. The water pressure in the pressure sensing chamber 34 decreases and is not sufficient to overcome the elastic force of the return spring 28 and the liquid level drop force in the second water passing chamber 26. The return spring 28 returns to its original position and pushes the pressing plate 30 downward, causing the control rod 39 to move downward until the lower end of the control rod 39 is inserted into the guide cylinder 65. The ninth sealing ring 40 seals the water path between the first water outlet chamber 48 and the second water outlet chamber 38. At this time, the second water passing port 44 reconnects the water path between the first water outlet chamber 48 and the flushing water port 42. Then the controller controls the motor to work at low power again. The pump body 13 pumps a small amount of water into the first water outlet chamber 48 and conveys it to the flushing water path 56 through the flushing water port 42. The water conveyed into the toilet realizes liquid sealing for the toilet, preventing the odor in the sewer pipeline from emitting and polluting the environment.

[0041] Embodiment 2

[0042] A toilet includes a dual-channel water pumping mechanism 64 and also includes a toilet main body 54. The toilet main body 54 has a cavity 55 and a water tank 61 inside. A washing and drainage port 71 is provided below the cavity 55. An flushing and drainage channel 69 is provided below the washing and drainage port 71. A sewage discharge port 70 connected to the flushing and drainage channel 69 is provided at the bottom of the toilet main body 54. The sewage discharge port 70 is connected to the sewer pipeline. A flushing water path 56 is provided circumferentially at the upper part of the cavity 55. An flushing and drainage path 68 connected to the flushing and drainage channel 69 is provided inside the toilet main body 54. The dual-channel water pumping mechanism 64 is arranged at the bottom of the inner cavity of the water tank 61. The flushing water port 42 of the dual-channel water pumping mechanism 64 is connected to the flushing water path 56. The flushing and drainage port 37 is connected to a conduit 63 located inside the water tank 61. The lower end of the conduit 63 is connected to the flushing and drainage path 68. The top of the conduit 63 is higher than the liquid level of the water tank 61. Air holes 62 higher than the liquid level are provided on the side wall of the conduit 63.

[0043] Furthermore, the flushing water inlet 42 is connected to a flushing water pipe 59. A water flow passage 57 communicating with the flushing water path 56 is provided on the toilet body 54. A first plug 58 is provided at the water inlet end of the water flow passage 57. The first plug 58 is connected to the flushing water pipe 59. A flushing drain pipe 66 is provided at the lower end of the conduit 63. A second plug 67 is provided at the water inlet end of the flushing and draining water path 68. The second plug 67 is connected to the flushing drain pipe 66. The flushing and draining water outlet 37 is connected to the upper end of the conduit 63 through a connecting pipe 60.

[0044] In this embodiment, as Figure 2 shown, the dual-channel water pumping mechanism 64 is installed in the water tank 61 of the toilet body 54. The water tank 61 and the cavity 55 are independent of each other. A flushing water path 56 is provided on the toilet body 54 above the cavity 55. The flushing water path 56 is annular. The water flow passage 57 communicating with the flushing water path 56 is provided. A first plug 58 is adaptively connected to the water inlet end of the water flow passage 57. A flushing water pipe 59 is connected to the first plug 58. One end of the flushing water pipe 59 is connected to the water flow passage 57, and the other end is connected to the flushing water inlet 42 of the dual-channel water pumping mechanism 64. A washing and draining opening 71 is provided below the cavity 55. Below the washing and draining opening 71 is a flushing and draining flow passage 69. The flushing and draining flow passage 69 is a curved flow passage, which is a conventional setting inside the existing toilet. The flushing and draining flow passage 69 is connected to the flushing and draining water path 68 inside the toilet. A second plug 67 is connected to the water inlet end of the flushing and draining water path 68. The second plug 67 is connected to the bottom end of the conduit 63 through a flushing drain pipe 66. The conduit 63 is vertically fixed inside the toilet body 54. The top of the conduit 63 is higher than the liquid level of the water tank 61. A connecting pipe 60 is connected to the side wall of the upper end of the conduit 63. The other end of the connecting pipe 60 is connected to the flushing and draining water outlet 37 of the dual-channel water pumping mechanism 64. An air hole 62 is also provided on the conduit 63. The aperture of the air hole 62 is small. The air hole 62 is higher than the liquid level of the water tank 61. The air hole 62 is to prevent the generation of a siphon phenomenon inside the conduit 63 during flushing and draining. The water inlet end of the existing flushing and draining flow passage 69 is recessed downward. The flushing sewage and excrement are all collected here, and finally are flushed away by a large amount of water to the sewage outlet 70 and flow into the sewer pipeline. Then, the water conveyed by the flushing water path 56 is collected in the recess of the flushing and draining flow passage 69 and forms a liquid seal.

[0045] The specific flushing principle of the toilet main body 54 is as follows: First, the controller controls the motor in the dual-channel water pumping mechanism 64 to start with low power. The rotation of the rotor 12 of the motor drives the impellers at both ends to rotate. A small amount of water is sucked in from the first water inlet 20 and the second water inlet 01 and pumped to the first water outlet 21 and the second water outlet 50 respectively. Finally, it is collected by the water inlet flow path 53 in the valve body 47 and then transported to the first water outlet cavity 48 through the first water passing port 49. The water in the first water outlet cavity 48 pushes open the one-way diaphragm 41 and enters the first water passing cavity 31 and the pressure sensing cavity 34. The water pressure in the pressure sensing cavity 34 is the same as that in the first water passing cavity 31. The downward water pressure in the pressure sensing cavity 34 acts on the support sleeve 35, and the upward water pressure acts on the bottom surface of the side plate 32 and the bottom surface of the pressing plate 30. At this time, the water pressure cannot overcome the elastic force of the return spring 28 and the liquid level drop force in the second water passing cavity 26. At this time, the control rod 39 does not move, and the second water passing port 44 connects the water path between the first water outlet cavity 48 and the flushing water port 42. The flushing water port 42 transports water to the flushing water pipe 59 in the toilet main body 54, and then enters the annular flushing water path 56 through the water flow path 57. At this time, the inner wall of the inner cavity of the toilet main body 54 can be flushed. The flushed sundries and sewage are collected at the depression of the flushing and drainage flow path 69 through the washing and drainage port 71.

[0046] Next, the controller controls the motor to work at high power, the rotational speed of the rotor 12 increases, a large amount of water is pumped to the first water outlet 21 and the second water outlet 50, and then converges into the first water outlet cavity 48 through the water inlet channel 53. The scouring water outlet 42 has a smaller diameter and has a throttling effect. Therefore, a large amount of water is located in the first water outlet cavity 48, resulting in pressure buildup. The water pressure in the first water outlet cavity 48 pushes open the one-way diaphragm 41, and the water enters the first water passing cavity 31 through the water inlet hole 43 and enters the pressure sensing cavity 34 through the third water passing opening 33. The water pressure in the pressure sensing cavity 34 overcomes the elastic force of the return spring 28, that is, the liquid level drop force in the second water passing cavity 26, and pushes the side plate 32 and the pressing plate 30 upward, causing the side plate 32, the pressing plate 30, and the control rod 39 to move upward. The pressing plate 30 compresses the return spring 28. After the lower end of the control rod 39 slides out of the upper end of the guide cylinder 65, a large amount of water in the first water outlet cavity 48 enters the second water outlet cavity 38 and is transported to the flushing and draining path 68 of the toilet through the flushing and draining opening 37. The flushing and draining opening 37 is a large-diameter water outlet, which realizes a large amount of water flushing for the toilet. The excrement is flushed away by a large amount of water and flushed to the sewage outlet 70 through the flushing and draining channel 69, and finally discharged into the sewer pipeline. When a large amount of water is flushed, a siphon effect is generated, sucking away the scoured debris and sewage and discharging them into the sewer pipeline; when the water in the first water outlet cavity 48 is discharged, the water volume decreases sharply, the one-way diaphragm 41 closes the water inlet hole 43, and the water in the pressure sensing cavity 34 and the first water passing cavity 31 flows into the second water passing cavity 26 through the second water hole 29, generating a pressure relief effect. The water pressure in the pressure sensing cavity 34 decreases and is not enough to overcome the elastic force of the return spring 28 and the liquid level drop force in the second water passing cavity 26. The return spring 28 returns to its original position and pushes the pressing plate 30 downward, causing the control rod 39 to move downward until the lower end of the control rod 39 is inserted into the guide cylinder 65. The ninth sealing ring 40 seals the water path between the first water outlet cavity 48 and the second water outlet cavity 38. At this time, the second water passing opening 44 reconnects the water path between the first water outlet cavity 48 and the scouring water outlet 42.

[0047] Finally, the controller controls the motor to work at low power again. The pump body 13 pumps a small amount of water into the first water outlet cavity 48 and transports it to the scouring water path 56 through the scouring water outlet 42. The scouring water path 56 transports the water to the depression of the flushing and draining channel in the toilet body 54 for temporary storage, and the liquid level just exceeds the washing and draining port 71, so that the liquid seal of the toilet body 54 can be realized, avoiding the odor in the sewer pipeline from spreading and polluting the environment.

[0048] The above is only a preferred embodiment of the present invention, and it does not impose any form of limitation on the present invention. Based on the technical essence of the present invention, any simple modifications, equivalent replacements, and improvements made to the above embodiments within the spirit and principle of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A dual-channel water pumping mechanism (64), comprising a pump body (13) installed inside a toilet, characterized in that, The pump body (13) is adaptively and sealingly connected to a valve body (47). The pump body (13) is provided with a first water inlet (20), a second water inlet (01), a first water outlet (21), and a second water outlet (50). The first water inlet (20) is connected to the first water outlet (21), and the second water inlet (01) is connected to the second water outlet (50). An inlet water flow passage (53) that is connected to the first water outlet (21) and the second water outlet (50) is provided inside the valve body (47). A flushing water port (42) and a flushing and drainage water port (37) that are respectively connected to the flushing water path (56) and the flushing and drainage water path (68) of the toilet are provided on the side of the valve body (47). A flow control component for controlling the connection or blockage of the water paths between the flushing water port (42), the flushing and drainage water port (37), and the inlet water flow passage (53) is further provided inside the valve body (47).

2. The dual-channel water pumping mechanism (64) according to claim 1, wherein An upper end cover (17) and a lower end cover (03) are respectively connected to the upper end and the lower end of the pump body (13). One ends of the upper end cover (17) and the lower end cover (03) are sealingly connected to the valve body (47). The first water outlet (21) and the second water outlet (50) are respectively provided at the ends of the upper end cover (17) and the lower end cover (03) that are connected to the valve body (47). A pump water component for pumping the source water of the first water inlet (20) and the second water inlet (01) to the first water outlet (21) and the second water outlet (50) respectively is provided between the upper end cover (17) and the lower end cover (03).

3. The dual-channel water pumping mechanism (64) according to claim 2, wherein, The pump water component includes a rotor (12), a stator (11), a first impeller (18), and a second impeller (04). The rotor (12) is rotatably arranged inside the stator (11). A rotating shaft (05) is provided in the middle of the rotor (12). The first impeller (18) is arranged at the upper end of the rotating shaft (05), and the second impeller (04) is arranged at the lower end of the rotating shaft (05). A partition plate (10) is provided between the rotor (12) and the stator (11). An upper sealing plate (15) is provided above the partition plate (10), and a lower sealing plate (08) is provided below the partition plate (10).

4. A dual - path water pumping mechanism (64) according to claim 3, characterized in that, A first sealing ring (19) and a second sealing ring (02) are circumferentially embedded at the upper end and the lower end of the rotating shaft (05). A first bearing (14) and a second bearing (06) sleeved on the rotating shaft (05) are provided between the first sealing ring (19) and the second sealing ring (02). The first bearing (14) is located between the rotating shaft (05) and the upper sealing plate (15), and the second bearing (06) is located between the rotating shaft (05) and the partition plate (10). The upper end of the partition plate (10) is circumferentially pressed between the upper end cover (17) and the pump body (13). A third sealing ring (16) is embedded at the top end of the partition plate (10). A fourth sealing ring (09) is embedded at the lower end of the partition plate (10). The fourth sealing ring (09) is pressed between the partition plate (10) and the lower sealing plate (08). The lower sealing plate (08) is circumferentially pressed between the pump body (13) and the lower end cover (03). A fifth sealing ring (07) is embedded at the bottom surface of the lower sealing plate (08). The fifth sealing ring (07) is pressed between the lower sealing plate (08) and the lower end cover (03).

5. A dual-channel water pumping mechanism (64) according to claim 2, characterized in that, The upper end cover (17) and the valve body (47) are fixedly connected by a first screw (23), and the lower end cover (03) and the valve body (47) are fixedly connected by a second screw (52). A sixth sealing ring (22) is circumferentially embedded at one end of the upper end cover (17) connected to the valve body (47), and a seventh sealing ring (51) is circumferentially embedded at one end of the lower end cover (03) connected to the valve body (47).

6. A dual - path water pumping mechanism (64) according to claim 1, characterized in that, A first water inlet (49), a first water outlet cavity (48), and a second water outlet cavity (38) are provided in the valve body (47). The first water inlet (49) connects the water path between the water inlet flow channel (53) and the first water outlet cavity (48). The second water outlet cavity (38) is connected to the flushing and drainage port (37). The flow control assembly controls the connection or blockage of the water path between the first water outlet cavity (48), the flushing water port (42), and the second water outlet cavity (38).

7. A dual-channel water pumping mechanism (64) according to claim 6, characterized in that, The flow control assembly includes a control rod (39) and a return spring (28). A pressure plate (30) is fixed to the upper end of the control rod (39). An extension plate (45) is provided at the lower end of the control rod (39). A second water inlet (44) communicating with the first water outlet cavity (48) is provided on the extension plate (45). A first water passage cavity (31) is formed between the pressure plate (30) and the control rod (39). A valve cover (24) is provided at the top of the valve body (47). A second water passage cavity (26) is formed between the valve cover (24) and the pressure plate (30). A first water hole (25) communicating with the second water passage cavity (26) is provided on the valve cover (24). One end of the return spring (28) acts on the valve cover (24), and the other end acts on the pressure plate (30). A second water hole (29) communicating with the first water passage cavity (31) is provided on the pressure plate (30). A support sleeve (35) is sleeved outside the control rod (39). A pressure sensing cavity (34) communicating with the first water passage cavity (31) is formed between the support sleeve (35) and the control rod (39). There is a gap (36) between the support sleeve (35) and the control rod (39). A second water outlet cavity (38) is formed between the control rod (39) and the inner wall of the valve body (47). A one-way water flow control structure for controlling the connection or blockage of the first water outlet cavity (48) and the first water passage cavity (31) is provided at the lower end of the control rod (39). A third water inlet (33) for connecting the water path between the first water passage cavity (31) and the pressure sensing cavity (34) is provided on the control rod (39).

8. A dual-channel water pumping mechanism (64) according to claim 7, characterized in that, An eighth sealing ring (27) is compressed between the valve cover (24) and the valve body (47). A guide cylinder (65) connected to the inner wall of the valve body (47) is provided circumferentially at the lower end of the control rod (39). A ninth sealing ring (40) is circumferentially embedded in the control rod (39). A guide plate (46) connected to the inner wall of the valve body (47) is provided on one side of the extension plate (45).

9. A toilet bowl, comprising a dual-channel water pumping mechanism (64) according to any one of the above claims 1-8, characterized in that, It further includes a toilet body (54). Inside the toilet body (54), there is a cavity (55) and a water tank (61). Below the cavity (55), there is a washing and discharging port (71). Below the washing and discharging port (71), there is a flushing and discharging flow channel (69). At the bottom of the toilet body (54), there is a sewage discharge port (70) connected to the flushing and discharging flow channel (69). The sewage discharge port (70) is connected to the sewer pipeline. Circumferentially arranged above the cavity (55) is a flushing water path (56). Inside the toilet body (54), there is a flushing and discharging water path (68) connected to the flushing and discharging flow channel (69). A dual-channel water pumping mechanism (64) is arranged at the bottom of the inner cavity of the water tank (61). The flushing water outlet (42) of the dual-channel water pumping mechanism (64) is connected to the flushing water path (56). The flushing and discharging water outlet (37) is connected to a conduit (63) located inside the water tank (61). The lower end of the conduit (63) is connected to the flushing and discharging water path (68). The top of the conduit (63) is higher than the liquid level of the water tank (61). Air holes (62) higher than the liquid level are provided on the side wall of the conduit (63).

10. A toilet according to claim 9, characterized in that, The flushing water outlet (42) is connected to a flushing water pipe (59). On the toilet body (54), there is a water passing flow channel (57) connected to the flushing water path (56). At the water inlet end of the water passing flow channel (57), there is a first plug (58) connected to the flushing water pipe (59). At the lower end of the conduit (63), there is a flushing and discharging water pipe (66). At the water inlet end of the flushing and discharging water path (68), there is a second plug (67) connected to the flushing and discharging water pipe (66). The flushing and discharging water outlet (37) is connected to the upper end of the conduit (63) through a connecting pipe (60).

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