Cleaning waterway and pedestal pan

Abstract

The utility model provides a cleaning waterway and a pedestal pan. The cleaning waterway comprises a spray gun and a water supply system for supplying water. And one end of the cleaning water path is a water source inlet communicated with a water supply system, and the other end is a spray-washing port of the spray gun. The water supply system comprises a pressure regulating structure and a water pump. The pressure regulating structure comprises a vent hole, an inlet end and an outlet end, the vent hole is communicated with the external environment, and the inlet end of the pressure regulating structure is communicated with the water source inlet. And the pressure regulating structure is used for regulating the pressure of the cleaning water flow entering from the water source inlet. The water pump is used for sucking the cleaning water flow passing through the pressure adjusting structure and conveying the cleaning water flow to the spray gun. After the water pump is started, negative pressure is formed at the outlet end of the pressure regulating structure, air pressure at the vent hole is larger than that at the outlet end, the inlet end and the outlet end of the pressure regulating structure are communicated, and a cleaning water source at the water source inlet is sucked. The cleaning waterway and the pedestal pan can provide cleaning water flow with stable water pressure.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent sanitary ware, in particular to a cleaning waterway and a toilet. Background Art

[0002] At present, smart toilets are accepted by more and more users and are widely used in our daily life. Among them, using a spray gun to wash the user's buttocks is a very important function of the smart toilet.

[0003] Therefore, smart toilets generally have a cleaning water circuit that supplies water to the spray gun. The current mature way of supplying water to the cleaning water circuit is to directly connect it to the pipeline network. The water flow provided by the pipeline network has a certain pressure to supply water to the cleaning water circuit. However, when the water pressure in the water circuit in the pipeline network is unstable, the water flow in the cleaning water circuit will also be affected, making the water supply of the flushing water circuit unstable. There is usually a heater in the cleaning water circuit. When the water supply to the cleaning water circuit is unstable, it will cause the heater to overheat, which may easily burn the pipeline or cause fire and other dangers. In addition, when the water supply to the cleaning water circuit is unstable, the speed of the heater power adjustment cannot keep up, resulting in the spray gun water output being hot and cold, which is not a good experience, and may even cause burns. Utility Model Content

[0004] The utility model can provide a cleaning water channel and a toilet bowl which can provide a cleaning water flow with a stable water flow and water pressure.

[0005] A cleaning waterway, comprising a spray gun and a water supply system for supplying water, wherein one end of the cleaning waterway is a water source inlet for connecting to the water supply system, and the other end is a spray port of the spray gun, and the water supply system comprises:

[0006] a pressure regulating structure, arranged near the water source inlet, the pressure regulating structure comprising a vent, an inlet end and an outlet end, the vent being connected to the external environment, the inlet end of the pressure regulating structure being connected to the water source inlet, and the pressure regulating structure being used to regulate the pressure of the cleaning water flow entering from the water source inlet;

[0007] A water pump is provided at one end of the pressure regulating structure away from the water source inlet, the water pump is connected to the outlet end of the pressure regulating structure, and the water pump is used to suck the cleaning water flow through the pressure regulating structure and deliver the cleaning water flow to the spray gun;

[0008] After the water pump is turned on, a negative pressure is formed at the outlet end of the pressure regulating structure, the air pressure at the vent is greater than the negative pressure at the outlet end, the inlet end and the outlet end of the pressure regulating structure are connected, and the cleaning water source at the water source inlet is sucked.

[0009] In one embodiment, the pressure regulating structure includes a shell and a valve plate assembly, the valve plate assembly divides the shell into an air pressure chamber and a liquid passage chamber, the shell is provided with a liquid inlet and a liquid outlet connected to the liquid passage chamber, the shell is provided with a valve port connected to the liquid inlet, the valve plate assembly is provided with a plunger that can be retracted and arranged inside the valve port, and the valve plate assembly is subjected to the pressure of the air pressure chamber to cause the plunger to retract and retract along the valve port, so that the liquid inlet and the liquid outlet are connected or closed.

[0010] In one embodiment, the valve plate assembly includes a valve plate and a support plate, the support plate supports the valve plate, the plunger is arranged on the support plate, the valve plate is sealed and connected to the air pressure chamber, the valve plate is subjected to the pressure difference formed by the vent hole and the outlet end, the valve plate undergoes elastic deformation and drives the plunger to move.

[0011] In one embodiment, the projection area of ​​the valve plate in the vertical direction is at least twice the cross-sectional area of ​​the valve opening.

[0012] In one embodiment, a gap is formed between the outer wall of the plunger and the inner wall of the valve port, and a plugging head is provided at the free end of the plunger. The diameter of the plugging head is larger than the diameter of the valve port, and the expansion and contraction of the plunger drives the plugging head to seal or open the valve port.

[0013] In one embodiment, the shell includes a first shell and a second shell, and the first shell and the second shell are detachably connected.

[0014] In one embodiment, the second shell includes an upper shell and a lower shell, the upper shell is sealed to the lower shell, a partition is formed between the upper shell and the lower shell, and the valve port is arranged on the partition.

[0015] In one embodiment, an elastic member is pressed between the free end of the plunger and the housing, and the elastic member provides an elastic restoring force to the free end of the plunger.

[0016] In one embodiment, the cleaning water channel is further provided with a heater, the heater is connected to the water pump and the spray gun, and the cleaning water flows to the spray gun after being heated by the heater.

[0017] A toilet, comprising:

[0018] Ceramic body;

[0019] The cover plate assembly is installed on the top of the ceramic body. The cover plate assembly includes a cover body and the cleaning water channel. The cleaning water channel is arranged in the cover body.

[0020] It can be seen from the above technical solution that the utility model has at least the following advantages and positive effects:

[0021] In the above-mentioned toilet, the inlet end of the pressure regulating structure has a wide working range, and the inlet end can be high water pressure, normal pressure or negative pressure. When the water pump is turned on, the suction effect of the water pump forms a negative pressure at the outlet end of the pressure regulating structure, and the pressure at the outlet end is relatively lower than the air pressure at the vent. The valve plate assembly of the pressure regulating structure makes the inlet end and the outlet end conductive. When the water pump continues to suck to keep the outlet end of the pressure regulating structure at negative pressure, the pressure regulating structure can be kept open continuously.

[0022] The pressure regulating structure of the cleaning water circuit is controlled by the external air pressure and the suction effect of the water pump. The control method is controlled by the negative pressure effect formed at the outlet of the regulating structure. The control function can be realized without using other electronic control components, such as solenoid valves, etc. The pressure regulating structure greatly simplifies the overall structure of the cleaning water circuit and also simplifies the control circuit of the cleaning water circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the flow of the cleaning water circuit provided by this application;

[0024] Figure 2 yes Figure 1 A three-dimensional view of the cleaning waterway shown;

[0025] Figure 3 yes Figure 2 A perspective view of the water supply system of the cleaning waterway shown;

[0026] Figure 4 yes Figure 3 A three-dimensional diagram of a pressure regulating structure of a water supply system shown;

[0027] Figure 5 yes Figure 4 A cross-sectional view of the pressure regulating structure of the water supply system shown in an open state;

[0028] Figure 6 yes Figure 5 A cross-sectional view of a pressure regulating structure of a water supply system in a closed state is shown.

[0029] The following are the descriptions of the reference numerals:

[0030] 2. Cleaning waterway; 21. Spray gun; 22. Pressure regulating structure; 221. Inlet end; 222. Outlet end; 23. Water pump; 24. Anti-backflow device; 241. Valve body; 242. Water inlet; 243. Water outlet; 244. Air inlet; 25. Heater; 26. First shell; 260. Air pressure chamber; 261. Air vent; 262. Flange; 27. Second shell; 270. Liquid passage chamber; 271. Liquid inlet; 272. Liquid outlet; 273 , upper shell; 274, lower shell; 275, partition; 276, valve port; 28, valve plate assembly; 281, valve plate; 2811, connecting column; 282, supporting plate; 283, annular protrusion; 284, plunger; 2841, limiting groove; 2842, stopper; 29, plugging head; 291, limiting protrusion; 20, elastic member; 201, limiting column; 202, boss; 203, first countersunk hole; 204, second countersunk hole; 3, cleaning water source. DETAILED DESCRIPTION

[0031] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially for illustrative purposes rather than for limiting the present invention.

[0032] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0033] A smart toilet comprises a cover plate assembly and a ceramic body, wherein the cover plate assembly is mounted on the top of the ceramic body. The ceramic body forms a cavity, and the cover plate assembly is arranged above the cavity. The cover plate assembly is provided with a switchable water type spray gun assembly. The switchable water type spray gun assembly is arranged above the cavity, and a spraying pipe of the switchable water type spray gun assembly is tilted and telescoped downward toward the middle of the cavity.

[0034] See also Figure 1 The cover plate assembly comprises a cover body and a cleaning water channel 2. The cover body can be made of plastic material. The cover body is installed on the top of the ceramic body, and the cover body can be fixed on the ceramic body by bolts.

[0035] The cleaning water channel 2 can be fixedly mounted on the cover. Specifically in this embodiment, the cleaning water channel 2 includes a spray gun 21 and a water supply system for supplying water.

[0036] One end of the cleaning water channel 2 is a water source inlet (not shown) for connecting to the cleaning water source 3. Specifically in this embodiment, the water source inlet is located on one side of the cover body for easy access. The cleaning water source 3 needs to meet certain hygiene standards. Usually, the cleaning water source 3 is connected to the water channel of the tap water network, and the water used for the cleaning water source 3 is tap water. It can be understood that the cleaning water source 3 can also be purified water, traditional Chinese medicine liquid, disinfectant water, etc. The cleaning water source 3 is selected accordingly according to different usage requirements.

[0037] The other end of the cleaning water circuit 2 is connected to the spray gun 21. The spray gun 21 is arranged on the front side of the cover body. The spray gun 21 can be a telescopic structure, and the spray gun 21 is extended to spray a cleaning water column to provide a cleaning and care function. When the spray gun 21 is retracted, the cleaning and care work is ended. A water spray valve is provided at the outlet of the spray gun 21, and the water spray valve can be used to spray a cleaning water column. The cleaning water column can be used to clean the buttocks of the user. It can be understood that the spray water column can be changed into different spray water types according to different usage requirements to meet the various usage requirements of different users. The spray water type can include a circular water column, a shower-type water column, an intermittent water column, etc.

[0038] The cleaning water channel 2 can be formed by an independent water pipe or an embedded water channel, and the specific implementation form of the cleaning water channel is not limited here.

[0039] See also Figure 2 and Figure 3 The water supply system includes a pressure regulating structure 22 and a water pump 23. The pressure regulating structure 22 is arranged near the water source inlet. Figure 4 The inlet end 221 of the pressure regulating structure 22 is connected to the water source inlet. After the cleaning water enters from the water source inlet, it flows into the pressure regulating structure 22. It can be understood that the inlet end 221 of the pressure regulating structure 22 can be an integrated structure with the water source inlet, which can simplify the structure of the cleaning waterway.

[0040] The pressure regulating structure 22 is used to regulate the pressure of the cleaning water flow entering from the water source inlet. The pressure regulating structure 22 can keep the cleaning water flow at a relatively uniform pressure, thereby ensuring that the water pressure and water flow rate of the cleaning water channel are uniform, thereby ensuring that the water pressure and water flow rate of the cleaning water column sprayed from the spray port are stable.

[0041] The water pump 23 is arranged at one end of the pressure regulating structure 22 away from the water source inlet. The water pump 23 is connected to the outlet end of the pressure regulating structure 22, and the water pump 23 is used to suck the cleaning water flow through the pressure regulating structure 22 and deliver the cleaning water flow to the spray gun 21. When the water pump 23 starts, the water pump 23 forms a negative pressure at the outlet end 222 of the pressure regulating structure 22. The pressure regulating structure 22 is affected by the negative pressure, so that the inlet end 221 and the outlet end 222 of the pressure regulating structure 22 are connected to each other. It can be understood that the water pump 23 can be a water pump with a non-return function, which can prevent the cleaning water flow from being sucked back.

[0042] Specifically in this embodiment, when the water source inlet is connected to the tap water network, when the water supply of the tap water network is normal, the water source inlet is connected to tap water with a certain pressure. When the water supply of the tap water network is abnormal, the water source inlet is negative pressure. For the convenience of explanation, normal pressure is the liquid pressure in the container under atmospheric pressure. The normal tap water network water supply is usually greater than normal pressure, which is called "high pressure"; when the water flow pressure is lower than the normal pressure water flow, the pressure of the water flow is called "low pressure". And "high pressure" and "low pressure" are just two relative concepts, and the specific values ​​of "high pressure" and "low pressure" are not limited here.

[0043] That is, when the water source inlet is high pressure, the water pump 23 is turned on, and the outlet end 222 of the pressure regulating structure 22 forms a negative pressure, so that the inlet end 221 and the outlet end 222 of the pressure regulating structure 22 are connected. The water pump 23 sucks the high-pressure water source at the water source inlet. When the tap water network provides a cleaning water flow with a certain water pressure, the pressure regulating structure 22 can be turned on through the suction control of the water pump 23, and the water pump 23 can directly extract the cleaning water flow, and the cleaning water flow keeps flowing stably into the spray gun, ensuring stable spraying from the spray port.

[0044] When the water source inlet is at normal pressure or low pressure, the inlet end 221 and the outlet end 222 of the pressure regulating structure 22 are not connected. The water pump 23 is turned on to form a negative pressure at the outlet end 222, and the negative pressure can connect the inlet end 221 and the outlet end 222 of the pressure regulating structure 22, so that the water pump can pump the low-pressure water source at the water source inlet.

[0045] See also Figure 5 and Figure 6 Specifically in this embodiment, the pressure regulating structure 22 includes a housing and a valve plate assembly. Specifically in this embodiment, the housing includes a first housing 26 and a second housing 27, and the first housing 26 and the second housing 27 are detachably connected. Specifically, the first housing 26 and the second housing 27 can be detachably connected by bolts, buckles, etc.

[0046] The first shell 26 and the second shell 27 are mutually enclosed to form a receiving chamber. The valve plate assembly divides the receiving chamber of the shell into an air pressure chamber 260 and a liquid passage chamber 270. For the convenience of description, the first shell 26 forms the air pressure chamber 260. The second shell 27 forms the liquid passage chamber 270. The first shell 26 and the second shell 27 are arranged opposite to each other up and down. Specifically in this embodiment, the first shell 26 is located at the top and the second shell 27 is located at the bottom. It can be understood that the first shell 26 can also be located at the bottom and the second shell 27 can also be located at the top.

[0047] Furthermore, the pressure regulating structure 22 can be fixedly connected to the cover body by bolts on the first shell 26 .

[0048] The air pressure chamber 260 is provided with a vent hole 261 which is connected to the outside to sense the outside atmospheric pressure. The liquid chamber 270 is connected to the water source inlet to introduce the cleaning water source 3 into the pressure regulating structure 22 .

[0049] The valve plate assembly 28 may be disposed in the first housing 26. The second housing 27 is used to communicate with the water source inlet.

[0050] Specifically in this embodiment, the valve plate assembly 28 may include a valve plate 281 and a support plate 282 .

[0051] The valve plate 281 may be a sheet-shaped structure that matches the shape of the cross section of the air pressure chamber 260. The valve plate 281 is sealed and connected to the first housing 26. Specifically in this embodiment, the periphery of the first housing 26 is provided with a flange 262 for fastening and pressing the periphery of the valve plate. The pressing of the flange 262 can ensure that the valve plate 281 is sealed and connected to the first housing 26.

[0052] The upper surface of the valve plate 281 faces the vent hole 261, and the lower surface of the valve plate 281 faces the liquid chamber 270. The valve plate 281 is arranged opposite to the vent hole 261, and the external atmospheric pressure enters the air pressure chamber 260 through the vent hole 261, and the surface of the valve plate 281 feels the air pressure. The valve plate 281 can be a thin diaphragm with a certain elasticity, such as a rubber sheet, a plastic sheet, etc.

[0053] The valve plate 281 is circumferentially arranged on the annular protrusion 283. The annular protrusion 283 increases the elastic deformation of the valve plate 281 and can increase the elasticity of the valve plate 281. Specifically, the cross section of the annular protrusion 283 is arc-shaped. The annular protrusion 283 is convex toward the air pressure chamber and concave toward the liquid chamber.

[0054] The support plate 282 can be made of plastic, PC or other materials. The support plate 282 has a certain hardness relative to the valve plate 281. The lower surface of the support plate 282 faces the liquid cavity. A plunger 284 is protruded from the lower surface of the support plate 282 toward the liquid cavity. One end of the plunger 284 is fixedly connected to the lower surface of the support plate 282, and the other end of the plunger 284 can be raised or retracted in the valve port of the second housing 27.

[0055] Specifically in this embodiment, the plunger 284 and the support plate 282 may be an integral structure, and the plunger 284 also has a certain hardness, and when the support plate 282 moves up and down with the valve plate 281, the support plate 282 will drive the plunger 284 to move up and down.

[0056] The valve plate 281 is detachably mounted on the support plate 282. When the valve plate 281 is damaged or has poor sealing performance, the valve plate 281 can be replaced. Specifically, a connecting column 2811 for connecting with the support plate 282 is provided on the lower surface of the valve plate 281. A mounting hole may be provided on the support plate 282 corresponding to the connecting column 2811, and the support plate 282 is detachably connected to the mounting hole through the connecting column 2811. It is understood that there may be multiple connecting columns 2811 and mounting holes.

[0057] The second shell 27 is formed with a liquid passage chamber 270. The second shell 27 is provided with a liquid inlet 271 and a liquid outlet 272. The liquid passage chamber 270 may include a first liquid passage chamber and a second liquid passage chamber. The first liquid passage chamber and the second liquid passage chamber are separated by a partition 275. The first liquid passage chamber is arranged close to the air pressure chamber, and the second liquid passage chamber is arranged close to the liquid inlet. The first liquid passage chamber is connected to the liquid outlet 272, and the second liquid passage chamber is connected to the liquid inlet 271. A valve port 276 is provided on the partition 275, and the first liquid passage chamber and the second liquid passage chamber are connected through the valve port 276.

[0058] Specifically in this embodiment, the second housing 27 may include an upper housing 273 and a lower housing 274. The upper housing 273 and the lower housing 274 are detachably connected. A connecting portion is provided at the bottom of the upper housing 273. The open end of the lower housing 274 is accommodated in the connecting portion. In addition, a sealing ring is provided between the connecting portion of the upper housing 273 and the lower housing 274, and the upper housing 273 and the lower housing 274 are sealed and connected through the sealing ring.

[0059] The upper shell 273 forms the first liquid passage chamber, and the lower shell 274 forms the second liquid passage chamber. The bottom of the upper shell 273 can serve as the above-mentioned partition 275. The first liquid passage chamber is located above the second liquid passage chamber.

[0060] One end of the plunger 284 is fixedly connected to the lower surface of the support plate 282, and the other end is a free end. The free end passes through the valve port 276 and extends into the second liquid passage cavity. The free end of the plunger 284 is subjected to the pressure of the water pressure in the second liquid passage cavity. Since the cross-sectional area of ​​the plunger 284 is small, it is much smaller than the area of ​​the valve plate 281.

[0061] Specifically in this embodiment, the vertical projection area of ​​the valve plate 281 is at least twice the cross-sectional area of ​​the valve port 276. For example, the vertical projection area of ​​the valve plate 281 may be 50 times, 100 times, etc., the cross-sectional area of ​​the valve port 276.

[0062] When the water pump 23 starts to pump, negative pressure is formed at the outlet end 222 of the pressure regulating structure 22. The valve plate 281 is affected by the negative pressure, so that the inlet end 221 and the outlet end 222 of the pressure regulating structure 22 are connected to each other. The upper surface of the valve plate 281 is subjected to downward air pressure, and the valve plate 281 is elastically deformed, and the valve plate 281 bulges downward toward the liquid cavity, which drives the support plate 282 to move downward, and the free end of the plunger 284 moves downward, so that the valve port 276 is in an open state.

[0063] Conversely, when the water pump 23 stops pumping, the outlet end 222 becomes at normal pressure, and no negative pressure is formed between the vent hole 261 and the outlet end 222, the downward pressure on the valve plate 281 is small, and the valve plate 281 undergoes opposite elastic deformation, and the valve plate 281 bulges upward toward the air pressure chamber, driving the support plate 282 to move upward, and causing the free end of the plunger 284 to move upward, and the valve port 276 is in a closed state.

[0064] The rise or fall of the plunger 284 can open or close the valve port 276 and connect or block the first liquid passage chamber with the second liquid passage chamber. The pressure regulating structure 22 can control the connection of the cleaning water path through the connection between the first liquid passage chamber and the second liquid passage chamber.

[0065] Specifically in the present embodiment, the free end of the plunger 284 is provided with a plugging head 29. The plugging head 29 can be made of materials such as rubber and silicone. The plugging head 29 is sleeved on the free end of the plunger 284. Specifically, the free end of the plunger 284 is provided with a limiting groove 2841 and a stopper 2842. The limiting groove 2841 surrounds the outer wall of the plunger 284. The open end of the plugging head 29 is sleeved on the plunger 284, and the end of the open end is accommodated in the limiting groove 2841. The stopper 2842 is provided at the top end of the free end of the plunger 284, and the stopper 2842 and the inner cavity wall of the plugging head 29 are mutually engaged and connected to ensure that the plunger 284 and the plugging head 29 maintain a stable connection.

[0066] The diameter of the plugging head 29 is larger than the diameter of the valve port 276, and the plunger 284 is extended and retracted to drive the plugging head 29 to plug or open the valve port 276. In addition, since the plunger 284 can be movably accommodated in the valve port 276, there is a certain gap between the outer wall of the plunger 284 and the inner wall of the valve port 276. The outer wall of the plunger 284 is provided with a limiting groove 2841, and the open end of the plugging head 29 is accommodated in the limiting groove 2841. When the plugging head 29 and the interlayer 275 are mutually supported, the end face of the open end of the plugging head 29 can seal and block the above-mentioned gap to close the valve port 276. When the plugging head 29 and the interlayer 275 are separated from each other, the end face of the open end of the plugging head 29 also leaves the gap, thereby making the valve port 276 conductive. When the cleaning water flows through the gap, the gap forms resistance to the cleaning water flow, reduces its pressure, so that the cleaning water flow reaching the outlet end is less than or equal to normal pressure.

[0067] The free end of the plunger 284 abuts against the second housing 27 to hold the elastic member 20. A limiting protrusion 291 is provided at the top of the plugging head 29. One end of the elastic member 20 can be sleeved on the outer side of the limiting protrusion 291, and the other end of the elastic member 20 is sleeved on the limiting column 201 located at the bottom of the second liquid passage chamber. The upper and lower cooperation of the limiting protrusion 291 and the limiting column 201 can ensure that the elastic member 20 can be stably fixed in the second liquid passage chamber.

[0068] Specifically in this embodiment, a boss 202 is further provided at the bottom of the second liquid chamber. A countersunk hole is provided in the middle of the boss 202. The countersunk hole includes a first countersunk hole 203 and a second countersunk hole 204. The aperture of the first countersunk hole 203 is larger than the aperture of the second countersunk hole 204. The first countersunk hole 203 and the second countersunk hole 204 are coaxially arranged. Among them, the limiting column 201 is arranged at the bottom of the second countersunk hole 204, and the limiting protrusion 291 and the elastic member 20 are accommodated in the second countersunk hole 204. The plugging head 29 can be accommodated in the first countersunk hole 203. The limiting protrusion 291 of the plugging head 29 can also be correspondingly accommodated in the second countersunk hole 204. Through the above-mentioned first countersunk hole 203 and second countersunk hole 204, the plugging head 29 can be moved along the axial direction of the countersunk hole to ensure that the plugging head 29 can move into place and accurately control the opening or closing of the valve port 276. Furthermore, the elastic member 20 can smoothly undergo elastic deformation, thereby preventing the elastic member 20 from shifting during the deformation process, thereby affecting the performance of the elastic member 20 .

[0069] When the water pump 23 is turned on, negative pressure is formed at the outlet end 222, and the downward external atmospheric pressure on the valve plate 281 is greater than the upward force on the valve plate 281. The valve plate 281 drives the plunger 284 to move downward, and the valve port 276 opens, causing the elastic member 20 to be compressed and deformed, generating an elastic restoring force.

[0070] Specifically in this embodiment, the elastic member 20 may be a compression spring. The compression spring may provide a preload force. The preload force may balance the gravity of the valve plate assembly 28. Since the gravity of the valve plate assembly 28 is usually small, the preload force is also small, and the elastic deformation of the compression spring is also small.

[0071] The water pump 23 is disposed at one end of the pressure regulating structure 22 away from the water source inlet. The water pump 23 is connected to the outlet end of the pressure regulating structure 22. The water pump 23 is used to suck the cleaning water flow through the pressure regulating structure 22 and deliver the cleaning water flow to the spray gun 21.

[0072] The water pump 23 draws water, and the outlet end of the pressure regulating structure 22 generates negative pressure to conduct the pressure regulating structure 22 and obtain water. The water pump 23 pressurizes and discharges the cleaning water to supply the rear cleaning water path such as the heater and the spray gun 21. The switch and power of the water pump 23 can be controlled by the circuit.

[0073] The cleaning water circuit is also provided with a heater 25. The heater 25 is connected to the water pump 23 and the spray gun 21, and the cleaning water is heated by the heater 25 and flows to the spray gun 21. The heater 25 can continuously provide warm water to the spray gun 21 to improve the comfort of cleaning.

[0074] Specifically in this embodiment, the heater 25 is disposed at the rear end of the cover body and away from the water pump 23 and the spray gun 21 to avoid interfering with the control circuit of the water supply system and interfering with the control signal of the control circuit to the water pump 23 and the spray gun 21 .

[0075] See also Figure 2 When the water pump 23 is a water pump without a backflow prevention function, the cleaning water circuit further includes an anti-backflow device 24. The anti-backflow device 24 can be connected to the inlet end 221 of the pressure regulating structure 22. The water source inlet of the water supply system can be connected to a high-pressure water source or a normal-pressure water source.

[0076] Alternatively, in other embodiments, the back suction preventer 24 is connected to the outlet of the water pump 23. Then the water source inlet of the water supply system can be connected to a high-pressure water source, a normal-pressure water source, or a negative-pressure water source.

[0077] It is understood that in other embodiments, when the water pump 23 is a water pump with a non-return function, the cleaning water circuit can also omit the anti-backflow device 24. The water pump 23 can be connected to a high-pressure water source, a normal-pressure water source, or a negative-pressure water source through the pressure regulating structure 22.

[0078] The pressure regulating structure 22 can reduce the external high-pressure water to below normal pressure, which is sucked by the water pump 23 and then pumped out under pressure to the cleaning water channel and the spray gun 21. The water pressure and flow required for the cleaning water channel are adjusted by controlling the water pump 23 through the control circuit.

[0079] The working pressure of the inlet end 221 of the pressure regulating structure 22 is wide, and the inlet end can be a high-pressure water source, a normal-pressure water source, or a negative-pressure water source. When the inlet end 221 is connected to a low-pressure or negative-pressure water source, the water pump 23 forms a negative pressure at the outlet end 222, and the pressure regulating structure 22 can also be turned on. Therefore, the above-mentioned cleaning water supply system is almost unaffected by the external water pressure and can be connected to a high-pressure water source, a normal-pressure water source, or a negative-pressure water source.

[0080] Furthermore, the pressure regulating structure 22 is controlled by the external air pressure, and its control mode is controlled by the pressure condition connected to the overall regulating structure 22, and the above control function can be realized without using other electronic control components, such as solenoid valves, etc. The pressure regulating structure 22 greatly simplifies the overall structure of the cleaning water circuit and also simplifies the control circuit of the cleaning water circuit.

[0081] In order to prevent the water pump 23 from continuing to work and sucking water from the external pipeline when the external high-pressure pipeline loses pressure, and to prevent the water pump 23 without a non-return function and the cleaning water channel from forming a siphon effect when the external pipeline is under negative pressure, thereby polluting the external pipeline, an anti-backsyphon device can be added between the external pipeline and the inlet of the pressure regulating structure 22.

[0082] In the above toilet, the inlet end of the pressure regulating structure 22 has a wide working range, and the inlet end can be high water pressure, zero water pressure or negative water pressure. When the pressure at the outlet end of the pressure regulating structure 22 is negative pressure, the valve plate assembly 28 of the pressure regulating structure 22 makes the inlet and outlet conductive, and the pressure at the outlet end continues to maintain negative pressure or lower than normal pressure, so as to ensure that the pressure regulating structure 22 is continuously opened. Therefore, the water at the outlet end of the pressure regulating structure 22 is lower than normal pressure.

[0083] In the above-mentioned cleaning water supply system, the pressure regulating structure 22 and the water pump 23 are combined into a water supply assembly. Compared with the traditional water supply solution, its advantages are at least:

[0084] 1. There is no requirement for the pressure of the water source for the cleaning waterway. Whether it is a high-pressure water source with pressure from the tap water network, a normal-pressure water source in an external kettle, or even a low-pressure water source, this combination can provide a stable water supply to the cleaning waterway. Ensure that the heater can have a stable water supply to avoid problems such as unstable heating temperature due to lack of water or excess water, resulting in a bad experience of hot and cold water coming out of the spray gun.

[0085] 2. For the rear end water supply of the cleaning waterway, its pressure and flow rate can be adjusted by the water pump 23;

[0086] 3. The pressure and flow of the water supply at the rear end of the cleaning waterway are adjusted to remain stable and not affected by the external water supply pressure;

[0087] 4. The above-mentioned cleaning water channel has the advantages of simple structure, cost saving and space saving.

[0088] Although the utility model has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the utility model can be implemented in a variety of forms without departing from the spirit or essence of the utility model, it should be understood that the above-mentioned embodiments are not limited to any of the aforementioned details, but should be widely interpreted within the spirit and scope defined by the attached claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the attached claims.

Claims

1. A cleaning waterway, characterized in that: It includes a spray gun and a water supply system for supplying water, one end of the cleaning water path is a water source inlet for connecting to the water supply system, and the other end is a spray port of the spray gun, and the water supply system includes: a pressure regulating structure, arranged near the water source inlet, the pressure regulating structure comprising a vent, an inlet end and an outlet end, the vent being connected to the external environment, the inlet end of the pressure regulating structure being connected to the water source inlet, and the pressure regulating structure being used to regulate the pressure of the cleaning water flow entering from the water source inlet; A water pump is provided at one end of the pressure regulating structure away from the water source inlet, the water pump is connected to the outlet end of the pressure regulating structure, and the water pump is used to suck the cleaning water flow through the pressure regulating structure and deliver the cleaning water flow to the spray gun; After the water pump is turned on, a negative pressure is formed at the outlet end of the pressure regulating structure, the air pressure at the vent is greater than the negative pressure at the outlet end, the inlet end and the outlet end of the pressure regulating structure are connected, and the cleaning water source at the water source inlet is sucked.

2. The cleaning water channel according to claim 1, characterized in that: The pressure regulating structure includes a shell and a valve plate assembly, the valve plate assembly divides the shell into an air pressure chamber and a liquid passage chamber, the shell is provided with a liquid inlet and a liquid outlet connected to the liquid passage chamber, the shell is provided with a valve port connected to the liquid inlet, the valve plate assembly is provided with a plunger that can be telescopically arranged inside the valve port, and the valve plate assembly is subjected to the pressure of the air pressure chamber to cause the plunger to telescope along the valve port, so that the liquid inlet and the liquid outlet are connected or closed.

3. The cleaning water channel according to claim 2, characterized in that: The valve plate assembly includes a valve plate and a support plate, the support plate supports the valve plate, the plunger is arranged on the support plate, the valve plate is sealed and connected to the air pressure chamber, the valve plate is subjected to the pressure difference formed by the vent hole and the outlet end, the valve plate undergoes elastic deformation and drives the plunger to move.

4. The cleaning water channel according to claim 3, characterized in that: The projection area of ​​the valve plate in the vertical direction is at least twice the cross-sectional area of ​​the valve opening.

5. The cleaning water channel according to claim 2, characterized in that: A gap is formed between the outer wall of the plunger and the inner wall of the valve port. A plugging head is provided at the free end of the plunger. The diameter of the plugging head is larger than the diameter of the valve port. The expansion and contraction of the plunger drives the plugging head to seal or open the valve port.

6. The cleaning water channel according to claim 2, characterized in that: The shell includes a first shell and a second shell, and the first shell and the second shell are detachably connected.

7. The cleaning water channel according to claim 6, characterized in that: The second shell includes an upper shell and a lower shell. The upper shell is sealed and connected to the lower shell. A partition is formed between the upper shell and the lower shell. The valve port is arranged on the partition.

8. The cleaning water channel according to claim 2, characterized in that: An elastic member is pressed between the free end of the plunger and the housing, and the elastic member provides elastic restoring force to the free end of the plunger.

9. The cleaning water channel according to claim 1, characterized in that: The cleaning water channel is also provided with a heater, which is connected to the water pump and the spray gun. The cleaning water flows to the spray gun after being heated by the heater.

10. A toilet, characterized in that: include: Ceramic body; A cover plate assembly is installed on the top of the ceramic body, and the cover plate assembly includes a cover body and a cleaning water channel as described in any one of claims 1-9, and the cleaning water channel is arranged in the cover body.

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