Flush valve and squatting pan using same

Abstract

The utility model discloses a flush valve. A shell is provided with a water inlet end and a water outlet end; the valve piece is movably installed between the water inlet end and the water outlet end, a pressure cavity is defined between the valve piece and the shell, the valve piece comprises a valve body, a connecting rod, a sleeve, a shifting rod and a flexible pipe, the valve body is provided with a first flow channel and a water passing cavity, and the water inlet end communicates with the pressure cavity through the first flow channel; the water passing cavity comprises a first end communicated with the pressure cavity and a second end communicated with the water outlet end, the connecting rod movably penetrates through the sleeve, and the flexible pipe is located in the sleeve and connected between the connecting rod and the shifting rod; the electric control assembly is installed on the shell and used for controlling opening and closing of the third flow channel. When the pressure cavity is decompressed or pressurized, the contact area of the flexible pipe and water flow impact is small, and water flow mainly bears axial pressure to the two ends of the flexible pipe, so that the flexible pipe is more stably connected with the connecting rod and the shifting rod; in the process, the telescopic deformation of the flexible pipe can be effectively reduced, the fatigue failure resistance of the flexible pipe is improved, and the service life is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of water valves, in particular to a flush valve and a squat toilet using the same. Background Art

[0002] With the increasing demand for intelligent and hygienic products in the market, especially in public places, the demand for contactless flush valves equipped with infrared and laser sensors has been driven. The production side is required to upgrade traditional products to advanced flush valve systems and reduce installation costs. In this context, flush valve technology also needs to undergo technical iteration to meet the needs of both supply and demand sides in terms of product modularization, integration, intelligence, and energy saving.

[0003] Some existing flushing valves use a flexible diaphragm to achieve sealing between the pressure chamber and the fluid discharge port. At the same time, it is necessary to ensure that the flexible diaphragm can move up and down (axially) with the main diaphragm valve. In this way, the flexible diaphragm needs to be designed with a certain radial gap. For example, CN102686816B uses an inner diaphragm in the diaphragm valve to isolate the water in the pressure chamber (control chamber) from the water channel of the discharge port. Because the inner diaphragm needs to move up and down axially with the main diaphragm valve, a gap of at least twice the wall thickness of the inner diaphragm must be left between the inflow plug-in and the upper retaining ring, resulting in no support between the inner diaphragm and the opening of the inflow plug-in. When the pressure chamber is in a high-pressure environment, the inner diaphragm is easily squeezed into the main discharge port by water pressure, resulting in functional failures such as jamming, rupture of the seal, and long water flow. Utility Model Content

[0004] The present invention aims to solve at least one of the above-mentioned technical problems in the related art to a certain extent. To this end, the present invention provides a flushing valve.

[0005] To achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A flush valve according to an embodiment of the first aspect of the present invention includes:

[0007] A housing, wherein the housing is provided with a water inlet and a water outlet;

[0008] The valve member is movably mounted between the water inlet end and the water outlet end, a pressure chamber is defined between the valve member and the housing, the valve member comprises a valve body, a connecting rod, a sleeve, a shift rod and a flexible tube, the valve body is provided with a first flow channel and a water passage chamber, the first flow channel connects the water inlet end with the pressure chamber, the water passage chamber comprises a first end connected with the pressure chamber and a second end connected with the water outlet end, the shift rod is swingably inserted into the second end to control the opening and closing of the second end, the sleeve is movably mounted in the water passage chamber, the connecting rod is inserted into the sleeve, the flexible tube is located inside the sleeve and connected between the connecting rod and the shift rod, the connecting rod, the flexible tube and the shift rod are hollow inside and are connected in sequence to form a second flow channel, and the second flow channel is connected with the water outlet end;

[0009] An electrically controlled component is mounted on the housing, comprising an electrically controlled valve and a support, wherein the support is provided with a third flow channel, one end of the connecting rod being inserted into the third flow channel, the third flow channel connecting the pressure chamber and the second flow channel, and the electrically controlled valve being used to control the opening and closing of the third flow channel.

[0010] The flushing valve according to the embodiment of the present invention has at least the following beneficial effects: when the pressure chamber is depressurized or pressurized, the design of the flexible tube has a smaller contact area with the impact of the water flow, and the flow of water mainly bears axial pressure on both ends of the flexible tube, so that the flexible tube is more firmly connected to the connecting rod and the shift rod; in the process, the expansion and contraction deformation of the flexible tube can be effectively reduced, its resistance to fatigue failure can be improved, and its service life can be guaranteed.

[0011] According to some embodiments of the present invention, a first spring is installed in the flexible tube, and two ends of the first spring are respectively in contact with the connecting rod and the shifting rod.

[0012] According to some embodiments of the present invention, the sleeve includes a third end and a fourth end, the third end is provided with a first through hole, one end of the connecting rod is provided with a first shoulder, the connecting rod is passed through the first through hole, the first shoulder is located in the sleeve, the outer diameter of the first shoulder is larger than the diameter of the first through hole, and the first shoulder can abut against the inner end surface of the third end;

[0013] The fourth end is provided with a second through hole, and the two ends of the shift rod are respectively a fifth end and a sixth end. The shift rod is provided with a second shoulder near the fifth end. The outer diameter of the fifth end is smaller than the aperture of the second through hole, and the outer diameter of the second shoulder is larger than the outer diameter of the fourth end. The fifth end extends into the second through hole, and the end face of the fourth end can abut against the second shoulder.

[0014] According to some embodiments of the present invention, a third through hole is provided at the second end, a first sealing ring is provided on the side wall of the third through hole facing the water passage chamber, the rod diameter of the shift rod is smaller than the aperture of the third through hole, the outer diameter of the second shaft shoulder is larger than the aperture of the third through hole, and the second shaft shoulder can abut against the first sealing ring.

[0015] According to some embodiments of the present invention, a second spring is sleeved on the sleeve, a third shoulder is provided on the sleeve, one end of the second spring abuts against the first end, and the other end abuts against the third shoulder.

[0016] According to some embodiments of the present utility model, the valve body includes an upper cylinder seat, a lower cylinder seat and a locking piece, the lower cylinder seat is provided with a plurality of protrusions, and the protrusions are distributed in sequence along the circumferential direction, the upper cylinder seat is provided with a first channel, the end face of the upper cylinder seat abuts against the protrusions, and the intervals between the protrusions are connected with the first channel to form the first flow channel, the locking piece is passed through the upper cylinder seat and the lower cylinder seat, the locking piece is threadedly connected to the upper cylinder seat, the lower cylinder seat is clamped and fixed between the upper cylinder seat and the locking piece, and the internal hollow space of the locking piece defines the water flow chamber.

[0017] According to some embodiments of the present invention, a water outlet is provided inside the shell, the water outlet and the pressure chamber are in a coaxial position, a fourth shoulder is provided on the locking member, a second sealing ring is clamped between the side of the lower cylinder seat away from the protrusion and the fourth shoulder, the maximum outer diameter of the second sealing ring is greater than the maximum outer diameter of the fourth shoulder, the end face of the second sealing ring can abut against the edge of the water outlet, an outer wall of the upper cylinder seat is provided with a mounting groove, a third sealing ring is sleeved on the mounting groove, the upper cylinder seat extends into the pressure chamber, and the circumferential outer wall of the third sealing ring abuts against the inner wall of the pressure chamber.

[0018] According to some embodiments of the present invention, a fourth through hole and a fifth through hole are provided on the first end, the sleeve is passed through the fourth through hole, a plurality of the fifth through holes are distributed around the fourth through hole, and the water passage chamber and the pressure chamber are connected through the fifth through holes.

[0019] According to some embodiments of the present invention, the third flow channel includes a second channel and a third channel that are interconnected, one end of the connecting rod is coaxially inserted into the second channel, the third channel is connected to the pressure chamber, and the valve stem of the electric control valve extends into the third channel and can abut against the end of the second channel to separate the second channel and the third channel.

[0020] According to some embodiments of the present invention, a mounting port is provided on the pressure chamber, and the electronic control component further includes a pressure cover, which is threadedly connected to the mounting port, and the support cover is placed on the mounting port and clamped between the pressure cover and the mounting port.

[0021] According to some embodiments of the present utility model, the electronic control component also includes a power box, a pressure plate and an induction probe, the interior of the power box is divided into a first cavity, a second cavity and a third cavity, the support is provided with a boss, the electric control valve is locked on the pressure cover by a first screw, the electric control valve and the boss are placed in the first cavity, the power box is provided with a second screw, the second screw can be screwed into the first cavity and abut against the boss, the second cavity is used to place the battery, the side wall of the third cavity is provided with an induction port, the induction probe is installed in the third cavity and clamped on the induction port, the pressure plate is locked on the end face of the power box by the third screw and closes the second cavity and the third cavity.

[0022] According to some embodiments of the present invention, a power output terminal is provided on the pressure plate, and the power output terminal is electrically connected to the electric control valve and the battery. The sensing probe is provided with pins, and the pins are plugged into the pressure plate and electrically connected to the power output terminal.

[0023] A squat toilet according to a second embodiment of the present invention includes a flush valve.

[0024] The squat toilet according to the embodiment of the utility model has at least the following beneficial effects: convenient flushing operation, long service life of the flushing valve, and low maintenance cost.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0027] Figure 1 This is a schematic diagram of the internal structure of the flush valve in normal state;

[0028] Figure 2 yes Figure 1 Schematic diagram of the state when the pressure chamber begins to release pressure;

[0029] Figure 3 yes Figure 2 Schematic diagram of the state after the valve is moved upward;

[0030] Figure 4Schematic diagram of the internal structure of the shell;

[0031] Figure 5 It is a schematic diagram of the structural decomposition of the valve components;

[0032] Figure 6 This is a schematic diagram of one of the valve states;

[0033] Figure 7 yes Figure 6 Another state diagram of ;

[0034] Figure 8 It is an exploded schematic diagram of the cartridge seat and lower cartridge seat;

[0035] Figure 9 It is a schematic diagram of the internal structure of the electric control valve;

[0036] Figure 10 It is a schematic diagram of the structural decomposition of the electric control valve;

[0037] Figure 11 It is a structural diagram of the power box.

[0038] Reference numerals: housing 100; water inlet 110; water outlet 120; pressure chamber 130; water outlet 140; mounting port 150; valve member 200; valve body 210; upper cylinder seat 211; lower cylinder seat 212; locking member 213; protrusion 214; first channel 215; fourth shoulder 216; mounting groove 217; connecting rod 220; first shoulder 221; sleeve 230; third end 231; fourth end 232; first through hole 233; second through hole 234; second spring 235; third shoulder 236; lever 240; fifth end 241; sixth end 242; second shoulder 243; flexible tube 250; first spring 251; first flow channel 260; water outlet chamber 270 ;First end 271;Second end 272;Third through hole 273;Fourth through hole 274;Fiveth through hole 275;Second flow channel 280;Electro-control component 300;Electro-control valve 310;Valve stem 311;First screw 312;Support 320;Boss 321;Second screw 322;Third flow channel 330;Second channel 331;Third channel 332;Gland 340;Power supply box 350;First cavity 351;Second cavity 352;Third cavity 353;Induction port 354;Pressure plate 360;Power output terminal 361;Induction probe 370;Pin 371;Battery 380;First sealing ring 410;Second sealing ring 420;Third sealing ring 430;Foot pedal 500. DETAILED DESCRIPTION

[0039] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0040] The utility model relates to a flush valve, comprising a housing 100, a valve element 200 and an electric control assembly 300, and also relates to a squat toilet, which uses the flush valve.

[0041] like Figure 1 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 9 As shown, the housing 100 can be a multi-joint pipe structure. The housing 100 is provided with a water inlet 110 and a water outlet 120, which are connected through the interior of the housing 100. The water inlet 110 can be connected to a tap or other water supply, while the water outlet 120 is used to discharge water. The flush valve can be used in squat toilets for flushing after defecation, or on other products that require flushing. The valve member 200 is movably mounted within the housing 100 and is located between the water inlet 110 and the water outlet 120. A pressure chamber 130 is defined between the valve member 200 and the interior of the housing 100. The valve member 200 includes a valve body 210, a connecting rod 220, a sleeve 230, a lever 240, and a flexible tube 250. The valve body 210 is provided with a first flow channel 260 and a water passage chamber 270. The first flow channel 260 connects the water inlet 110 with the pressure chamber 130. The water passage chamber 270 includes a first end 271 and a second end 272. The first end 271 connects the water passage chamber 270 and the pressure chamber 130, and the second end 272 connects the water passage chamber 270 and the water outlet end 120. The lever 240 is provided through the second end 272, and one end of the lever 240 can pass through the second end 272 and extend into the water passage chamber 270, and the other end of the lever 240 can extend to the outside of the water passage chamber 270 and be located in the water outlet end 120. The lever 240 can swing relative to the second end 272. In this embodiment, the water passage chamber 270 is vertically arranged, the axial direction of the water passage chamber 270 is vertically oriented, and the pressure chamber 130 is located above the valve member 200. As shown in FIG. Figure 1 and Figure 6 As shown, when the lever 240 is in the same axial position as the pressure chamber 130, the end of the lever 240 blocks the second end 272, and the water chamber 270 is not connected to the water outlet 120. Figure 2 and Figure 7As shown, when the lever 240 swings to a position oblique to the axial direction of the pressure chamber 130, at least a portion of the end of the lever 240 moves away from the second end 272, opening the second end 272 and allowing the water passage chamber 270 to communicate with the water outlet 120 through the second end 272. The sleeve 230 is movably mounted within the water passage chamber 270 and is movable axially along the water passage chamber 270. One end of the sleeve 230 faces the pressure chamber 130; the other end faces the lever 240 and abuts against the lever 240. The connecting rod 220 is inserted through the sleeve 230, and the connecting rod 220 and sleeve 230 can be configured to move relative to each other. One end of the connecting rod 220 is located within the sleeve 230, while the other end extends outside the sleeve 230 and is located within the pressure chamber 130. The connecting rod 220 is movable axially along the sleeve 230. The flexible tube 250 is a flexible tube with a certain degree of deformation capability, such as a hose made of TPV or other materials. The flexible tube 250 can also be a corrugated tube. The flexible tube 250 is located in the sleeve 230. One end of the flexible tube 250 is connected to the end of the connecting rod 220. The end of the flexible tube 250 is sleeved on the connecting rod 220. Alternatively, a circular groove can be provided on the end of the connecting rod 220. The end of the flexible tube 250 is inserted into the circular groove and then fastened with a member such as a snap ring. The other end of the flexible tube 250 is connected to the end of the shift rod 240. The end of the flexible tube 250 is sleeved on the shift rod 240. Alternatively, a circular groove can be provided on the end of the shift rod 240. The end of the flexible tube 250 is inserted into the circular groove and then fastened with a member such as a snap ring. The connecting rod 220, flexible tube 250, and lever 240 are all hollow structures. The interiors of the connecting rod 220, flexible tube 250, and lever 240 are interconnected to form a second flow channel 280. The second flow channel 280 is connected to the water outlet 120. The electronic control assembly 300 is mounted on the housing 100 and includes an electronically controlled valve 310 and a support 320. The support 320 defines a third flow channel 330, which is connected to the pressure chamber 130. One end of the connecting rod 220 is inserted into the third flow channel 330. A sealing rubber ring may be provided between the end of the connecting rod 220 and the third flow channel 330. The second flow channel 280 is connected to the third flow channel 330. The electronically controlled valve 310, which may be a solenoid valve, controls the opening and closing of the third flow channel 330, that is, controls whether the third flow channel 330 connects the pressure chamber 130 to the second flow channel 280.

[0042] In actual use, the flush valve can be applied to a squat toilet. A foot pedal 500 or a handle can be installed on the housing 100. This embodiment takes the installation of the foot pedal 500 on the housing 100 as an example. Figure 1 As shown, the foot pedal 500 is plugged into the housing 100, and the shaft of the foot pedal 500 extends into the water outlet 120. Figure 1 and Figure 6As shown, under normal conditions, the water pipe keeps supplying water to the water inlet end 110, and the water from the water inlet end 110 is supplied to the pressure chamber 130 through the first flow channel 260. The electric control valve 310 shuts off the third flow channel 330, and the lever 240 blocks the second end 272 of the water flow chamber 270. The pressure chamber 130 and the water flow chamber 270 are filled with water, and the lever 240 keeps the second end 272 blocked under the pressure of the sleeve 230 and the water pressure of the water flow chamber 270. At the same time, the valve member 200 keeps the water outlet end 120 blocked under the pressure of the pressure chamber 130. When flushing is required, the flush valve has manual and electric control modes. In the manual mode of use, such as Figure 2 and Figure 7 As shown, the user can step on the foot pedal 500, and when the foot pedal 500 swings, it pushes the lever 240, and the lever 240 swings to open the second end 272. The water in the pressure chamber 130 and the water flow chamber 270 is discharged from the second end 272 to the water outlet 120, and the pressure in the pressure chamber 130 and the water flow chamber 270 is relieved. Figure 3As shown, after the pressure chamber 130 is depressurized, the water pressure at the water inlet end 110 pushes the valve member 200 upward as a whole, the pressure chamber 130 shrinks, the valve member 200 moves away from the water outlet end 120, and the water outlet end 120 is opened. Water from the water inlet end 110 flows directly to the water outlet end 120, and the water is discharged from the water outlet end 120 for flushing. When the lever 240 swings, it pushes the sleeve 230 upward a certain distance, and at the same time, the lower part of the flexible tube 250 will also be offset and deformed with the swing of the lever 240. During the pressure relief process of the pressure chamber 130 and the water flow chamber 270, the water flow washes on the outer wall of the sleeve 230, and will not directly impact the flexible tube 250. The water in the sleeve 230 will also gradually be discharged into the water flow chamber 270. After the foot pedal 500 is reset and the lever 240 loses its thrust, it can gradually return to its position blocking the second end 272 under the action of its own weight, similar to a gravitational pendulum. Alternatively, the sleeve 230 can apply elastic pressure to the lever 240, causing it to swing toward the position blocking the second end 272 and gradually return to its original position under the elastic pressure of the sleeve 230. The lever 240 swings until it re-blocks the second end 272. After the second end 272 is blocked, water from the water inlet 110 gradually flows back into the pressure chamber 130 through the first flow channel 260. As the pressure chamber 130 gradually fills with water, the water pressure in the pressure chamber 130 gradually becomes greater than the thrust of the water inlet 110 on the valve member 200. The valve member 200 gradually descends to block the water outlet 120, causing the water outlet 120 to cease discharging, and the pressure chamber 130 gradually fills with water. During the process of water entering the pressure chamber 130, the water will not directly impact the flexible tube 250 due to the obstruction of the sleeve 230, thereby protecting the flexible tube 250. In the electronic control mode, the electronic control component 300 can be activated through a sensing structure or a button structure. The electronic control valve 310 is opened, the third flow channel 330 is opened, and the water in the pressure chamber 130 is discharged to the water outlet 120 through the third flow channel 330 and the second flow channel 280 to relieve the pressure. After the pressure is relieved, the valve component 200 can move upward under the action of the water pressure at the water inlet end 110, thereby opening the water inlet end 110 and the water outlet end 120 for rapid drainage to achieve a flushing effect. After a certain period of flushing, the electronic control valve 310 closes the third flow channel 330 again, the pressure chamber 130 is gradually filled with water and pressurized, and the valve component 200 also gradually moves downward and resets to block the water outlet 120. When valve member 200 moves, connecting rod 220 moves relative to third flow channel 330, with third flow channel 330 providing a certain amount of clearance for the movement of connecting rod 220. During flushing or resetting, when pressure chamber 130 is released or charged, the flexible tube 250's design minimizes contact with the impact of the water flow. The water flow primarily exerts axial pressure on both ends of the flexible tube 250, further securing the flexible tube 250's connection to connecting rod 220 and lever 240. This process effectively reduces the amount of expansion and contraction deformation of the flexible tube 250, improving its resistance to fatigue failure and ensuring its service life.The above structure is used to replace the diaphragm structure of the prior art, thereby avoiding failure of the diaphragm and affecting the use, and effectively reducing maintenance costs.

[0043] In some specific embodiments of the present invention, Figure 5 、 Figure 6 and Figure 7 As shown, a first spring 251 is installed in the flexible tube 250. The two ends of the first spring 251 abut against the connecting rod 220 and the shifting rod 240, respectively. The first spring 251 can support the flexible tube 250 in the radial direction, increase the radial structural strength of the flexible tube 250, and prevent or reduce radial contraction of the flexible tube 250. When the flexible tube 250 deflects with the shifting rod 240, a portion of the sidewall of the flexible tube 250 will radially concave inward. The first spring 251 can ensure that the sidewall of the flexible tube 250 is radially reset, thereby ensuring water flow in the second flow channel 280. In addition, the first spring 251 can also provide axial support for the connecting rod 220 and the shifting rod 240, reducing the relative proximity between the shifting rod 240 and the connecting rod 220, thereby reducing the axial contraction of the flexible tube 250.

[0044] In some specific embodiments of the present invention, Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 and Figure 7As shown, the sleeve 230 is in the shape of a hollow cylinder. The sleeve 230 includes a third end 231 and a fourth end 232. A first through hole 233 is provided on the third end 231, and a first shoulder 221 is provided at one end of the connecting rod 220. The first shoulder 221 protrudes radially along the connecting rod 220. The connecting rod 220 is passed through the first through hole 233, and the first shoulder 221 is located in the sleeve 230. The outer diameter of the first shoulder 221 is larger than the aperture of the first through hole 233. In the direction shown in the figure, the first shoulder 221 is located at the lower end of the connecting rod 220, and the third end 231 is the upper end of the sleeve 230. The connecting rod 220 passes through the first through hole 233 from bottom to top. The first through hole 233 limits the first shoulder 221 from detaching upward from the third end 231, and the first shoulder 221 can abut against the inner end surface of the third end 231. When the shift rod 240 or the valve component 200 moves as a whole, the connecting rod 220 can move axially a certain distance along the first through hole 233. A second through hole 234 is provided on the fourth end 232, and the two ends of the shift rod 240 are respectively the fifth end 241 and the sixth end 242. A second shoulder 243 is provided at a position of the shift rod 240 close to the fifth end 241. The second shoulder 243 protrudes radially along the shift rod 240. The outer diameter of the fifth end 241 is smaller than the aperture of the second through hole 234, and the outer diameter of the second shoulder 243 is larger than the outer diameter of the fourth end 232. The fifth end 241 extends into the second through hole 234, and the end face of the fourth end 232 can abut against the second shoulder 243. Under normal circumstances, the fourth end 232 surrounds the fifth end 241, and the second through hole 234 is blocked by the second shoulder 243. The first shoulder 221 blocks the first through hole 233 upward. As shown Figure 7 As shown, after the lever 240 deflects, the fourth end 232 is supported by the second shoulder 243, causing the second shoulder 243 to deflect and partially disengage from the second through hole 234. Simultaneously, the sleeve 230 moves upward, and the first shoulder 221 moves downward relative to the sleeve 230. Before the lever 240 returns from the deflected position to the vertical position (blocking the second end 272), the fourth end 232 abuts the second shoulder 243, sealing the second through hole 234. The first shoulder 221 also moves upward relative to the sleeve 230, sealing the first through hole 233. This creates a temporarily sealed area within the sleeve 230. When water is injected into the pressure chamber 130 to increase pressure, the water cannot flow rapidly into the temporarily sealed area. Instead, it gradually seeps into the temporarily sealed area once the pressure chamber 130 is full of water. This acts as a buffer for incoming water within the sleeve 230, effectively reducing the impact of the water flow on the flexible tube 250.

[0045] A third through hole 273 is provided at the second end 272 of the water passage chamber 270. A first sealing ring 410 is provided on the sidewall of the third through hole 273 facing the water passage chamber 270. Specifically, the first sealing ring 410 is mounted on the upper side of the third through hole 273. The diameter of the lever 240 is smaller than the diameter of the third through hole 273, and the outer diameter of the second shoulder 243 is larger than the diameter of the third through hole 273. The second shoulder 243 can abut against the first sealing ring 410. The circumferential contact between the second shoulder 243 and the first sealing ring 410 seals the third through hole 273. The third through hole 273 restricts the lever 240 from downwardly disengaging from the water passage chamber 270. When the lever 240 deflects, the second shoulder 243 deflects with the first sealing ring 410 as a fulcrum, so that a portion of the second shoulder 243 leaves the first sealing ring 410, opening the third through hole 273, and the water chamber 270 is connected to the water outlet 120 through the third through hole 273.

[0046] In some specific embodiments of the present invention, Figure 5 、 Figure 6 and Figure 7 As shown, a second spring 235 is sleeved on the sleeve 230, and a third shoulder 236 is provided on the sleeve 230. The third shoulder 236 extends radially along the sleeve 230. One end of the second spring 235 abuts against the first end 271, and the other end of the second spring 235 abuts against the third shoulder 236. The second spring 235 applies an elastic force to the sleeve 230, which in turn causes the sleeve 230 to apply elastic pressure to the lever 240.

[0047] In some embodiments of the present invention, Figure 1 、 Figure 5 and Figure 8As shown, the valve body 210 includes an upper seat 211, a lower seat 212, and a locking member 213. Both the upper seat 211 and the lower seat 212 are hollow cylindrical. The upper seat 211 and the lower seat 212 are coaxially arranged vertically. The upper end surface of the lower seat 212 is provided with a plurality of protrusions 214, each of which is spaced apart along the circumference of the lower seat 212. The upper seat 211 is provided with a first passage 215, which can be axially arranged on the side wall of the upper seat 211. The lower end surface of the upper seat 211 abuts against each of the protrusions 214. The upper end of the first channel 215 is formed on the upper end surface of the upper cartridge 211 and communicates with the pressure chamber 130. The lower end of the first channel 215 is formed on the lower end surface of the upper cartridge 211 and communicates with the spaces between the protrusions 214, thereby forming a first flow channel 260. Water from the water inlet 110 flows in through the spaces between the protrusions 214 and then flows into the pressure chamber 130 along the first channel 215. The locking member 213 is hollow and cylindrical and is disposed through the upper cartridge 211 and the lower cartridge 212. The inner wall of the upper cartridge 211 is provided with an internal thread, and the outer wall of the locking member 213 is provided with an external thread. The locking member 213 and the upper cartridge 211 are connected by threads. The lower cartridge 212 is clamped and fixed between the bottom of the upper cartridge 211 and the lower portion of the locking member 213. The inner hollow of the locking member 213 defines a water passage cavity 270. The locking member 213 may be an independent cylindrical member or may be composed of two or more cylindrical members.

[0048] Among them, such as Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, a water outlet 140 is provided inside the housing 100, and the water outlet 140 and the pressure chamber 130 are coaxially located. The water outlet 140 may be formed inside the water outlet 120. A fourth shoulder 216 is provided on the locking member 213. The fourth shoulder 216 protrudes radially from the locking member 213. A second sealing ring 420 is sleeved on the locking member 213, and the fourth shoulder 216 supports the second sealing ring 420 in the axial direction. The second sealing ring 420 is clamped between the side (lower side) of the lower cylinder seat 212 away from the protrusion 214 and the fourth shoulder 216. The maximum outer diameter of the second sealing ring 420 is greater than the maximum outer diameter of the fourth shoulder 216. The end face of the second sealing ring 420 can abut against the edge of the water outlet 140, that is, the periphery of the water outlet 140 is sealed by the second sealing ring 420. The outer wall of the upper cartridge 211 is provided with a mounting groove 217, which is fitted with a third sealing ring 430, which can be a Y-shaped sealing ring. The upper cartridge 211 extends into the pressure chamber 130, with the circumferential outer wall of the third sealing ring 430 abutting the inner wall of the pressure chamber 130. When the valve member 200 moves, the upper cartridge 211 moves coaxially along the pressure chamber 130. After the valve member 200 moves upward, the second sealing ring 420 leaves the water inlet 140, and the water inlet 110 is connected to the water outlet 120 through the water inlet 140.

[0049] In some specific embodiments of the present invention, a fourth through-hole 274 and a fifth through-hole 275 are defined on the first end 271. The sleeve 230 is inserted through the fourth through-hole 274, and a plurality of fifth through-holes 275 are distributed around the fourth through-hole 274. The water passage chamber 270 and the pressure chamber 130 are connected via the fifth through-holes 275. The outer diameter of the third shoulder 236 on the sleeve 230 is larger than the diameter of the fourth through-hole 274. A certain distance is maintained between the third shoulder 236 and the inner wall of the water passage chamber 270 to facilitate water flow.

[0050] The valve element 200 forms an integral modular component and can be quickly installed into the housing 100 , with high modularity and integration and low cost.

[0051] In some embodiments of the present invention, Figure 4 、 Figure 9 and Figure 10As shown, the support 320 is provided with a second channel 331 and a third channel 332 that communicate with each other. The second channel 331 and the third channel 332 constitute the third flow channel 330. The second channel 331 is coaxially arranged with the pressure chamber 130. The upper end of the connecting rod 220 is movably coaxially inserted into the lower portion of the second channel 331. The second channel 331 provides a buffer for axial movement of the connecting rod 220. The third channel 332 can be arranged around the second channel 331. The lower portion of the third channel 332 communicates with the pressure chamber 130, while the upper portion of the third channel 332 aligns with the upper end of the second channel 331. The valve stem 311 of the electrically controlled valve 310 extends into the third channel 332, with the valve stem 311 and the upper end of the second channel 331 facing each other. When the valve stem 311 moves downward, it abuts against the upper end of the second channel 331, blocking the upper end of the second channel 331 and thus separating the second channel 331 from the third channel 332. When the valve stem 311 moves upward, the upper end of the second channel 331 is opened, and the second channel 331 and the third channel 332 are communicated.

[0052] Furthermore, a mounting opening 150 is defined in the upper portion of the pressure chamber 130. The electronic control assembly 300 also includes a gland 340, which is threadedly connected to the mounting opening 150. A support 320 covers the mounting opening 150. After the gland 340 is screwed onto the mounting opening 150, the support 320 is clamped between the gland 340 and the mounting opening 150, securing the assembly. This allows for quick assembly and disassembly of the electronic control module relative to the housing 100.

[0053] Among them, such as Figure 4 、 Figure 9 、 Figure 10 and Figure 11As shown, the electronic control assembly 300 also includes a power box 350, a pressure plate 360, and a sensing probe 370. The interior of the power box 350 is divided into a first chamber 351, a second chamber 352, and a third chamber 353. The first chamber 351, the second chamber 352, and the third chamber 353 are all formed along the height of the power box 350. The support 320 is provided with a boss 321, which can be cylindrical. The electrically controlled valve 310 is secured to the gland 340 by a first screw 312. The electrically controlled valve 310 and the boss 321 penetrate upward into the first chamber 351. A second screw 322 is provided on the power box 350. The second screw 322 is screwed laterally from the side wall of the power box 350 into the first chamber 351. The end of the second screw 322 abuts against the boss 321, thereby securing the support 320, the electrically controlled valve 310, and the power box 350 relative to each other. The second chamber 352 is used to house the battery 380. The battery 380 can be a dry cell battery 380 or a rechargeable battery 380. A sensing port 354 is defined on the sidewall of the third chamber 353. The sensing probe 370 is mounted in the third chamber 353, with one end of the sensing probe 370 snapping onto the sensing port 354. The pressure plate 360 ​​is secured to the end surface of the power supply box 350 via a third screw, sealing the second chamber 352 and the third chamber 353. The pressure plate 360 ​​is provided with a power output terminal 361. The power output terminal 361 can be electrically connected to the electrically controlled valve 310 and the battery 380 via a conductive sheet or wire. The sensing probe 370 is provided with a pin 371 that plugs into the pressure plate 360 ​​and contacts the power output terminal 361 to establish an electrical connection. The overall height of the electronic control assembly 300 can be controlled within 80 mm.

[0054] In the description of the present invention, 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" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0056] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0057] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0058] Throughout this specification, references to "some specific embodiments" and the like indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0059] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A flush valve, characterized in that: include: A housing (100), wherein the housing (100) is provided with a water inlet end (110) and a water outlet end (120); The valve member (200) is movably mounted between the water inlet end (110) and the water outlet end (120). A pressure chamber (130) is defined between the valve member (200) and the housing (100). The valve member (200) comprises a valve body (210), a connecting rod (220), a sleeve (230), a lever (240) and a flexible tube (250). The valve body (210) is provided with a first flow channel (260) and a water passage chamber (270). The first flow channel (260) connects the water inlet end (110) with the pressure chamber (130). The water passage chamber (270) comprises a first end (271) connected to the pressure chamber (130) and a second end (272) connected to the water outlet end (120). 20) is connected to the second end (272), the shifting rod (240) is swingably provided on the second end (272) to control the opening and closing of the second end (272), the sleeve (230) is movably installed in the water passage chamber (270), the connecting rod (220) is provided on the sleeve (230), the flexible tube (250) is located inside the sleeve (230) and is connected between the connecting rod (220) and the shifting rod (240), the connecting rod (220), the flexible tube (250) and the shifting rod (240) are hollow inside and are connected in sequence to form a second flow channel (280), and the second flow channel (280) is connected to the water outlet end (120); An electric control component (300) is mounted on the housing (100). The electric control component (300) includes an electric control valve (310) and a support (320). The support (320) is provided with a third flow channel (330). One end of the connecting rod (220) is inserted into the third flow channel (330). The third flow channel (330) connects the pressure chamber (130) and the second flow channel (280). The electric control valve (310) is used to control the opening and closing of the third flow channel (330).

2. The flush valve according to claim 1, wherein: A first spring (251) is installed in the flexible tube (250), and two ends of the first spring (251) respectively abut against the connecting rod (220) and the shifting rod (240).

3. The flush valve according to claim 1 or 2, characterized in that: The sleeve (230) includes a third end (231) and a fourth end (232), the third end (231) is provided with a first through hole (233), one end of the connecting rod (220) is provided with a first shaft shoulder (221), the connecting rod (220) is passed through the first through hole (233), the first shaft shoulder (221) is located in the sleeve (230), the outer diameter of the first shaft shoulder (221) is larger than the hole diameter of the first through hole (233), and the first shaft shoulder (221) can abut against the inner end surface of the third end (231); The fourth end (232) is provided with a second through hole (234), the two ends of the shift rod (240) are respectively a fifth end (241) and a sixth end (242), the shift rod (240) is provided with a second shaft shoulder (243) at a position close to the fifth end (241), the outer diameter of the fifth end (241) is smaller than the aperture of the second through hole (234), the outer diameter of the second shaft shoulder (243) is larger than the outer diameter of the fourth end (232), the fifth end (241) extends into the second through hole (234), and the end face of the fourth end (232) can abut against the second shaft shoulder (243).

4. The flush valve according to claim 3, wherein: The second end (272) is provided with a third through hole (273), and a first sealing ring (410) is provided on the side wall of the third through hole (273) facing the water passage chamber (270). The rod diameter of the shifting rod (240) is smaller than the hole diameter of the third through hole (273), and the outer diameter of the second shaft shoulder (243) is larger than the hole diameter of the third through hole (273). The second shaft shoulder (243) can abut against the first sealing ring (410).

5. The flush valve according to claim 1, wherein: A second spring (235) is sleeved on the sleeve (230), and a third shaft shoulder (236) is provided on the sleeve (230). One end of the second spring (235) abuts against the first end (271), and the other end abuts against the third shaft shoulder (236).

6. The flush valve according to claim 1, wherein: The valve body (210) includes an upper cylinder seat (211), a lower cylinder seat (212) and a locking member (213). The lower cylinder seat (212) is provided with a plurality of protrusions (214), and the protrusions (214) are sequentially spaced along the circumferential direction. The upper cylinder seat (211) is provided with a first channel (215). The end surface of the upper cylinder seat (211) abuts against the protrusions (214), and the intervals between the protrusions (214) and the first channel are spaced apart. (215) are connected to form the first flow channel (260), the locking member (213) is passed through the upper cylinder seat (211) and the lower cylinder seat (212), the locking member (213) is threadedly connected to the upper cylinder seat (211), the lower cylinder seat (212) is clamped and fixed between the upper cylinder seat (211) and the locking member (213), and the inner hollow of the locking member (213) defines the water passage cavity (270).

7. The flush valve according to claim 6, characterized in that: A water outlet (140) is provided inside the shell (100), and the water outlet (140) and the pressure chamber (130) are in a coaxial position. A fourth shoulder (216) is provided on the locking member (213). A second sealing ring (420) is clamped between the side of the lower cylinder seat (212) away from the protrusion (214) and the fourth shoulder (216). The maximum outer diameter of the second sealing ring (420) is greater than the maximum outer diameter of the fourth shoulder (216). The end face of the second sealing ring (420) can abut against the edge of the water outlet (140). The outer wall of the upper cylinder seat (211) is provided with a mounting groove (217). A third sealing ring (430) is sleeved on the mounting groove (217). The upper cylinder seat (211) extends into the pressure chamber (130), and the circumferential outer wall of the third sealing ring (430) abuts against the inner wall of the pressure chamber (130).

8. The flush valve according to claim 1 or 6, characterized in that: A fourth through hole (274) and a fifth through hole (275) are provided on the first end (271); the sleeve (230) is passed through the fourth through hole (274); a plurality of the fifth through holes (275) are distributed around the fourth through hole (274); and the water passage chamber (270) and the pressure chamber (130) are communicated with each other through the fifth through holes (275).

9. The flush valve according to claim 1, wherein: The third flow channel (330) includes a second channel (331) and a third channel (332) that are interconnected. One end of the connecting rod (220) is coaxially inserted into the second channel (331). The third channel (332) is connected to the pressure chamber (130). The valve stem (311) of the electric control valve (310) extends into the third channel (332) and can abut against the end of the second channel (331) to separate the second channel (331) and the third channel (332).

10. The flush valve according to claim 1 or 9, characterized in that: The pressure chamber (130) is provided with a mounting opening (150), the electric control component (300) further comprises a pressure cover (340), the pressure cover (340) is threadedly connected to the mounting opening (150), and the support (320) covers the mounting opening (150) and is clamped between the pressure cover (340) and the mounting opening (150).

11. The flush valve according to claim 10, wherein: The electric control assembly (300) further comprises a power supply box (350), a pressure plate (360) and a sensing probe (370). The interior of the power supply box (350) is divided into a first cavity (351), a second cavity (352) and a third cavity (353). The support (320) is provided with a boss (321). The electric control valve (310) is locked on the gland (340) by a first screw (312). The electric control valve (310) and the boss (321) are placed in the first cavity (351). The power supply box (350) is provided with a second screw ( 322), the second screw (322) can be screwed into the first cavity (351) and abut against the boss (321), the second cavity (352) is used to place the battery (380), the side wall of the third cavity (353) is provided with a sensing port (354), the sensing probe (370) is installed in the third cavity (353) and is clamped on the sensing port (354), the pressing plate (360) is locked on the end face of the power box (350) by the third screw and closes the second cavity (352) and the third cavity (353).

12. The flush valve according to claim 11, wherein: The pressure plate (360) is provided with a power output terminal (361), and the power output terminal (361) is electrically connected to the electric control valve (310) and the battery (380). The sensing probe (370) is provided with a pin (371), and the pin (371) is plugged into the pressure plate (360) and electrically connected to the power output terminal (361).

13. A squat toilet, characterized by: A flush valve comprising the flush valve according to any one of claims 1 to 12.

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