Flush valve and squatting pan using same

Abstract

According to the flushing 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 invention relates to the technical field of water valves, and in particular to a flush valve and a squat toilet using the same. Background Art

[0002] As the market demands for intelligent and hygienic products, especially in public places, the demand for contactless flush valves equipped with infrared and laser sensors has been driven, and requirements have been put forward on the production side on how to upgrade traditional products to advanced flush valve systems and reduce installation costs. In this context, flush valve technology also needs to be iterated to meet the needs of both supply and demand sides in terms of product modularization, integration, intelligence, energy saving, etc.

[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 axially up and down with the main diaphragm valve, a gap of at least twice the wall thickness of the inner diaphragm needs to be left between the inflow plug-in and the upper retaining ring, resulting in no support between the inner diaphragm and the inflow plug-in opening. 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, squeezed seal and long water flow. Summary of the invention

[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 object, the technical solution of the present invention is as follows:

[0006] A flush valve according to a first aspect of the present invention comprises:

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

[0008] A valve member is movably installed between the water inlet end and the water outlet end, a pressure chamber is defined between the valve member and the shell, the valve member includes a valve body, a connecting rod, a sleeve, a lever 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 includes a first end connected with the pressure chamber and a second end connected with the water outlet end, the lever is swingably penetrated through the second end to control the opening and closing of the second end, the sleeve is movably installed in the water passage chamber, the connecting rod is penetrated through the sleeve, the flexible tube is located inside the sleeve and connected between the connecting rod and the lever, the connecting rod, the flexible tube and the lever are hollow inside and are sequentially connected to form a second flow channel, and the second flow channel is connected with the water outlet end;

[0009] An electric control component is installed on the shell, and the electric control component includes an electric control valve and a support. The support is provided with a third flow channel. One end of the connecting rod is inserted into the third flow channel. The third flow channel connects the pressure chamber and the second flow channel. The electric control valve is 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 flexible tube is designed to have a smaller contact area with the impact of the water flow, and the flow of water mainly exerts axial pressure on both ends of the flexible tube, so that the flexible tube is more firmly connected to the connecting rod and the lever; in the process, the expansion and contraction deformation of the flexible tube can be effectively reduced, thereby improving its ability to resist fatigue failure and ensuring its service life.

[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 abutted against 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 aperture 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 lever are respectively a fifth end and a sixth end. The lever is provided with a second shoulder at a position close to 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 hole diameter of the third through hole, the outer diameter of the second shaft shoulder is larger than the hole diameter 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 invention, 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, each of the protrusions is spaced 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 each of the protrusions, the intervals between each of 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 installation groove is provided on the outer wall of the upper cylinder seat, a third sealing ring is sleeved on the installation 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 opened 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 is connected with the pressure chamber through the fifth through hole.

[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 opened on the pressure chamber, and the electronic control component also includes a pressure cover, which is threadedly connected to the mounting port, and the support covers the mounting port and is clamped between the pressure cover and the mounting port.

[0021] According to some embodiments of the present invention, the electronic control component also includes a power box, a pressure plate and a sensing 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 a sensing port, the sensing probe is installed in the third cavity and clamped on the sensing port, the pressure plate is locked on the end face of the power box by a 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 aspect of an embodiment of the present invention includes a flush valve.

[0024] The squat toilet according to the embodiment of the present invention 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 in part will be obvious from the following description, or will be 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 easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0027] FIG1 is a schematic diagram of the internal structure of the flush valve in a normal state;

[0028] FIG2 is a schematic diagram of the state when the pressure chamber of FIG1 begins to release pressure;

[0029] FIG3 is a schematic diagram of a state where the valve member of FIG2 is moved upward;

[0030] FIG4 is a schematic diagram of the internal structure of the housing;

[0031] FIG5 is a schematic diagram of the structure of the valve component;

[0032] FIG6 is a schematic diagram of a valve member in one state;

[0033] FIG7 is a schematic diagram of another state of FIG6;

[0034] FIG8 is an exploded schematic diagram of the cartridge seat and the lower cartridge seat;

[0035] FIG9 is a schematic diagram of the internal structure of the electric control valve;

[0036] FIG10 is a schematic diagram of the exploded structure of the electric control valve;

[0037] FIG. 11 is a schematic diagram of the structure of the power supply box.

[0038] Reference numerals: housing 100; water inlet end 110; water outlet end 120; pressure chamber 130; water outlet 140; installation 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; installation 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; fifth through hole 275; second flow channel 280; electronic control component 300; electronic 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; pressure cover 340; power box 350; first cavity 351; second cavity 352; third cavity 353; sensing port 354; pressure plate 360; power output terminal 361; sensing probe 370; pin 371; battery 380; first sealing ring 410; second sealing ring 420; third sealing ring 430; pedal 500. DETAILED DESCRIPTION

[0039] Embodiments of the present invention are described in detail below, 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 be used to explain the present invention, and should not be construed as limiting the present invention.

[0040] The present invention relates to a flushing valve, comprising a housing 100, a valve element 200 and an electric control component 300. The present invention also relates to a squat toilet, which uses the flushing valve.

[0041] As shown in Fig. 1, Fig. 4, Fig. 5, Fig. 6 and Fig. 9, the housing 100 may be a multi-joint pipe structure. The housing 100 is provided with a water inlet 110 and a water outlet 120, and the water inlet 110 and the water outlet 120 are connected through the interior of the housing 100. The water inlet 110 can be connected to a water pipe or other water supply equipment, and the water outlet 120 is used to discharge water outward. The flush valve can be applied to a squat toilet for flushing after defecation, and can also be used on other products that require flushing. The valve member 200 is movably mounted inside 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 end 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 with the pressure chamber 130, and the second end 272 connects the water passage chamber 270 with the water outlet end 120. The lever 240 is disposed at 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. 1 and FIG. 6 , when the lever 240 is at the same position as the pressure chamber 130 in the axial direction, the end of the lever 240 blocks the second end 272, and the water passage chamber 270 is not connected with the water outlet 120. As shown in FIG. 2 and FIG. 7 , when the lever 240 swings to deviate from the axial direction of the pressure chamber 130, at least a part of the end of the lever 240 leaves the second end 272, the second end 272 is opened, and the water passage chamber 270 can be connected with the water outlet 120 through the second end 272. The sleeve 230 is movably installed in the water passage chamber 270, and the sleeve 230 can move along the axial direction of the water passage chamber 270. One end of the sleeve 230 faces the pressure chamber 130; the other end of the sleeve 230 faces the lever 240 and abuts against the lever 240. The connecting rod 220 is inserted into the sleeve 230, and the connecting rod 220 and the sleeve 230 can be arranged to be relatively movable. One end of the connecting rod 220 is located in the sleeve 230, and the other end extends out of the sleeve 230 and is located in the pressure chamber 130. The connecting rod 220 can move along the axial direction of the sleeve 230. The flexible tube 250 is a hose with a certain deformation ability, such as a hose made of TPV or other materials. The flexible tube 250 can also be a corrugated tube or the like.The flexible tube 250 is located in the sleeve 230, and one end of the flexible tube 250 is connected to the end of the connecting rod 220, and the end of the flexible tube 250 is sleeved on the connecting rod 220, or a circular groove can be set on the end of the connecting rod 220, and the end of the flexible tube 250 is inserted into the circular groove, and then fastened with a clamp ring or other components. The other end of the flexible tube 250 is connected to the end of the lever 240, and the end of the flexible tube 250 is sleeved on the lever 240, or a circular groove can be set on the end of the lever 240, and the end of the flexible tube 250 is inserted into the circular groove, and then fastened with a clamp ring or other components. Among them, the connecting rod 220, the flexible tube 250 and the lever 240 are all hollow structures, and the interiors of the connecting rod 220, the flexible tube 250 and the lever 240 are connected in sequence to form a second flow channel 280. The second flow channel 280 is connected to the water outlet 120. The electric control component 300 is mounted on the housing 100, and includes an electric control valve 310 and a support 320. The support 320 is provided with a third flow channel 330, and the third flow channel 330 is connected to the pressure chamber 130. One end of the connecting rod 220 is inserted into the third flow channel 330, and a sealing rubber ring can 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 electric control valve 310 can be a solenoid valve. The electric control valve 310 is used to control the opening and closing of the third flow channel 330, that is, to control whether the third flow channel 330 connects the pressure chamber 130 with the second flow channel 280.

[0042] In actual use, the flushing valve can be applied to a squat toilet. A foot pedal 500 or a handle can be installed on the shell 100. This embodiment takes the installation of the foot pedal 500 on the shell 100 as an example. As shown in FIG1 , the foot pedal 500 is plugged into the shell 100, and the shaft of the foot pedal 500 extends into the water outlet 120. As shown in FIG1 and FIG6 , under normal conditions, the tap water pipe keeps supplying water to the water inlet 110, and the water from the water inlet 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 chamber 270. The water fills the pressure chamber 130 and the water chamber 270, and the lever 240 keeps the second end 272 blocked under the pressure of the sleeve 230 and the water pressure of the water chamber 270. At the same time, the valve member 200 will keep the water outlet 120 blocked under the pressure of the pressure chamber 130. When flushing is required, the flushing valve has manual and electronic control modes. In the manual mode, as shown in Figures 2 and 7, the user can step on the foot pedal 500, and the foot pedal 500 pushes the lever 240 when it swings, and the lever 240 swings to open the second end 272. The water in the pressure chamber 130 and the water passage chamber 270 is discharged from the second end 272 to the water outlet 120, and the pressure chamber 130 and the water passage chamber 270 are depressurized. As shown in Figure 3, after the pressure chamber 130 is depressurized, the water pressure of the water inlet end 110 pushes the valve member 200 upward as a whole, the pressure chamber 130 shrinks, the valve member 200 leaves the water outlet 120, and the water outlet 120 is opened. The water in the water inlet end 110 flows directly to the water outlet 120, and the water is discharged from the water outlet 120 to flush. When the lever 240 swings, it pushes the sleeve 230 to move up a certain distance, and 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 passage 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 to the water passage chamber 270. After the foot pedal 500 is reset, after the lever 240 loses the thrust of the foot pedal 500, the lever 240 can gradually reset to the position of blocking the second end 272 under the action of its own gravity, similar to the way of a gravity pendulum; or, the sleeve 230 applies elastic pressure to the lever 240, and the elastic pressure causes the lever 240 to swing to the position of blocking the second end 272 and gradually reset under the elastic pressure of the sleeve 230. The lever 240 swings until the lever 240 blocks the second end 272 again. After the second end 272 is blocked, the water at the water inlet end 110 will gradually re-inject into the pressure chamber 130 through the first flow channel 260. As the water in the pressure chamber 130 is gradually filled, the water pressure in the pressure chamber 130 gradually becomes greater than the thrust of the water inlet end 110 on the valve component 200. The valve component 200 gradually descends to block the water outlet end 120. The water outlet end 120 stops draining water, and the pressure chamber 130 is also gradually filled with water.During the process of water entering the pressure chamber 130, the water will not directly impact the flexible tube 250 under the obstruction of the sleeve 230, thereby protecting the flexible tube 250. In the electronically controlled mode of use, the electronically controlled component 300 can be started through a sensing structure or a button or other structure. The electronically controlled 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 member 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 electronically controlled valve 310 closes the third flow channel 330 again, the pressure chamber 130 is gradually filled with water and pressurized, and the valve member 200 also gradually moves downward and resets to block the water outlet 120. When the valve member 200 moves, the connecting rod 220 moves relative to the third flow channel 330, and the third flow channel 330 has a certain distance to avoid the movement of the connecting rod 220. In the flushing or resetting state, when the pressure chamber 130 is depressurized or pressurized, the design of the flexible tube 250 has a small 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 250, so that the flexible tube 250 is more firmly connected to the connecting rod 220 and the lever 240. In addition, the expansion and contraction deformation of the flexible tube 250 can be effectively reduced during the process, and its fatigue failure resistance can be improved to ensure the service life. The above structure is used to replace the diaphragm structure of the prior art to avoid the failure of the diaphragm and affect the use, and effectively reduce the maintenance cost.

[0043] In some specific embodiments of the present invention, as shown in FIG. 5 , FIG. 6 and FIG. 7 , a first spring 251 is installed in the flexible tube 250. The two ends of the first spring 251 are respectively abutted on the connecting rod 220 and the lever 240. 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 avoid or reduce the radial contraction of the flexible tube 250. When the flexible tube 250 deflects with the lever 240, the local side wall of the flexible tube 250 will be concave in the radial direction, and the first spring 251 can ensure that the side wall of the flexible tube 250 is radially reset, thereby ensuring the water flow of the second flow channel 280. In addition, the first spring 251 can also axially support the connecting rod 220 and the lever 240, reduce the relative proximity between the lever 240 and the connecting rod 220, and thereby reduce the axial contraction of the flexible tube 250.

[0044] In some specific embodiments of the present invention, as shown in FIG. 1, FIG. 2, FIG. 5, FIG. 6 and FIG. 7, the sleeve 230 is in a hollow cylindrical shape. 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 penetrated 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 greater 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 upwardly disengaging from the third end 231, and the first shoulder 221 can abut against the inner end surface of the third end 231. When the lever 240 or the valve member 200 moves as a whole, the connecting rod 220 can move axially along the first through hole 233 for a certain distance. The fourth end 232 is provided with a second through hole 234, and the two ends of the lever 240 are respectively the fifth end 241 and the sixth end 242. The lever 240 is provided with a second shoulder 243 at a position close to the fifth end 241. The second shoulder 243 protrudes radially along the lever 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 conditions, 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 in FIG7 , after the lever 240 is deflected, the fourth end 232 is supported by the second shoulder 243, and the second shoulder 243 is deflected and partially separated from the second through hole 234. At the same time, the sleeve 230 moves upward, and the first shoulder 221 moves downward relatively in the sleeve 230. Before the lever 240 is reset from the deflected position to the vertical position (blocking the second end 272), the fourth end 232 will abut against the second shoulder 243 to block the second through hole 234, and the first shoulder 221 will also move upward relative to the sleeve 230 to block the first through hole 233, so that a temporary closed area is formed inside the sleeve 230. When water is injected into the pressure chamber 130 for pressurization, the water cannot flow into the temporary closed area quickly, and can only gradually penetrate into the temporary closed area when the pressure chamber 130 is filled with water, which is equivalent to buffering the water inflow in the sleeve 230, effectively reducing the impact of the water flow on the flexible tube 250.

[0045] Among them, a third through hole 273 is provided on the second end 272 of the water passage chamber 270. A first sealing ring 410 is provided on the side wall of the third through hole 273 facing the water passage chamber 270. That is, the first sealing ring 410 is installed on the upper side of the third through hole 273. The rod diameter of the lever 240 is smaller than the aperture of the third through hole 273, and the outer diameter of the second shaft shoulder 243 is larger than the aperture of the third through hole 273. The second shaft shoulder 243 can abut against the first sealing ring 410. The third through hole 273 is blocked by the circumferential contact between the second shaft shoulder 243 and the first sealing ring 410. The third through hole 273 limits the lever 240 from disengaging downward 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 part of the second shoulder 243 leaves the first sealing ring 410, the third through hole 273 is opened, and the water chamber 270 is connected with the water outlet 120 through the third through hole 273.

[0046] In some specific embodiments of the present invention, as shown in FIG. 5, FIG. 6 and FIG. 7, 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 in the radial direction of the sleeve 230. One end of the second spring 235 abuts on the first end 271, and the other end of the second spring 235 abuts on the third shoulder 236. The second spring 235 applies an elastic force to the sleeve 230, so that the sleeve 230 applies an elastic pressure to the lever 240.

[0047] In some embodiments of the present invention, as shown in Fig. 1, Fig. 5 and Fig. 8, the valve body 210 includes an upper cylinder seat 211, a lower cylinder seat 212 and a locking member 213. The upper cylinder seat 211 and the lower cylinder seat 212 are both hollow cylindrical. The upper cylinder seat 211 and the lower cylinder seat 212 are coaxially distributed up and down. The upper end surface of the lower cylinder seat 212 is provided with a plurality of protrusions 214, and each protrusion 214 is sequentially spaced along the circumference of the lower cylinder seat 212. The upper cylinder seat 211 is provided with a first channel 215, and the first channel 215 can be axially arranged on the side wall of the upper cylinder seat 211. The lower end surface of the upper cylinder seat 211 abuts against each protrusion 214. The upper end of the first channel 215 is opened on the upper end surface of the upper cylinder seat 211, and the upper end of the first channel 215 is communicated with the pressure chamber 130. The lower end of the first channel 215 is opened on the lower end surface of the upper cylinder seat 211, and the lower end of the first channel 215 is communicated with the intervals between the protrusions 214, thereby forming a first flow channel 260. Water from the water inlet end 110 flows in from the intervals between the protrusions 214, and then flows into the pressure chamber 130 along the first channel 215. The locking member 213 is in a hollow cylindrical shape, and the locking member 213 is penetrated by the upper cylinder seat 211 and the lower cylinder seat 212. The inner wall of the upper cylinder seat 211 is provided with an internal thread, and the outer wall of the locking member 213 is provided with an external thread, and the locking member 213 is connected to the upper cylinder seat 211 by a threaded connection. The lower cylinder seat 212 is clamped and fixed between the bottom of the upper cylinder seat 211 and the lower part 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] As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, a water outlet 140 is provided inside the housing 100, and the water outlet 140 and the pressure chamber 130 are in a coaxial position. The water outlet 140 can be formed inside the water outlet 120. A fourth shoulder 216 is provided on the locking member 213. The fourth shoulder 216 protrudes in the radial direction of 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 blocked by the second sealing ring 420. The outer wall of the upper cylinder seat 211 is provided with a mounting groove 217, and the mounting groove 217 is sleeved with a third sealing ring 430, and the third sealing ring 430 can be a Y-shaped sealing ring. 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. When the valve member 200 moves, the upper cylinder seat 211 moves coaxially along the pressure chamber 130. After the valve member 200 moves upward, the second sealing ring 420 leaves the water port 140, and the water inlet end 110 is connected with the water outlet end 120 through the water port 140.

[0049] In some specific embodiments of the present invention, a fourth through hole 274 and a fifth through hole 275 are provided on the first end 271. The sleeve 230 is provided 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 is connected to the pressure chamber 130 through 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, and a certain distance is provided between the third shoulder 236 and the inner wall of the water passage chamber 270 to allow water to flow.

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

[0051] In some embodiments of the present invention, as shown in FIG. 4 , FIG. 9 and FIG. 10 , the support 320 is provided with a second channel 331 and a third channel 332 that are interconnected, and the second channel 331 and the third channel 332 constitute a 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 arranged in the lower part of the second channel 331. The axial movement of the connecting rod 220 is avoided by the second channel 331. The third channel 332 can be arranged around the second channel 331. The lower part of the third channel 332 is connected to the pressure chamber 130, and the upper part of the third channel 332 is connected to the upper end of the second channel 331. The valve stem 311 of the electric control valve 310 extends into the third channel 332, and the valve stem 311 is opposite to the upper end of the second channel 331. When the valve stem 311 moves downward, it can abut against the upper end of the second channel 331 to block the upper end of the second channel 331, thereby isolating the second channel 331 and 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 connected.

[0052] Furthermore, a mounting opening 150 is provided at the upper portion of the pressure chamber 130. The electric control assembly 300 further includes a gland 340, which is connected to the mounting opening 150 by threads. The support 320 covers the mounting opening 150, and 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 for fixing. The electric control module is thus quickly assembled and disassembled relative to the housing 100.

[0053] As shown in FIGS. 4, 9, 10 and 11, the electric control assembly 300 further includes 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 first cavity 351, the second cavity 352 and the third cavity 353 are all opened along the height direction of the power supply box 350. A boss 321 is provided on the support 320, and the boss 321 can be cylindrical. 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 penetrate into the first cavity 351 from bottom to top. The power box 350 is provided with a second screw 322, which is screwed into the first cavity 351 from the side wall of the power box 350, and the end of the second screw 322 abuts against the boss 321, so that the support 320, the electric control valve 310 and the power box 350 are relatively fixed. The second cavity 352 is used to place the battery 380. The battery 380 can be a dry cell 380 or a rechargeable battery 380. The side wall of the third cavity 353 is provided with a sensing port 354, and the sensing probe 370 is installed in the third cavity 353, and one end of the sensing probe 370 is clamped on the sensing port 354. The pressing plate 360 ​​is locked on the end surface of the power box 350 by the third screw and closes the second cavity 352 and the third cavity 353. Among them, the pressing plate 360 ​​is provided with a power output terminal 361. The power output terminal 361 and the electric control valve 310 and the battery 380 can be electrically connected through a conductive sheet or a wire. The sensing probe 370 is provided with a pin 371, which is plugged into the pressing plate 360, and the pin 371 is in contact with the power output terminal 361 to achieve electrical connection. The overall height of the electric control component 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 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, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0055] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. 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 invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0056] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

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

[0058] In the description of this specification, the description of reference terms such as "some specific embodiments" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0059] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit 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); A 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), the lever (240) is swingably disposed through the second end (272) to control the opening and closing of the second end (272), the sleeve (230) is movably mounted in the water passage chamber (270), the connecting rod (220) is disposed through the sleeve (230), the flexible tube (250) is located inside the sleeve (230) and is connected between the connecting rod (220) and the lever (240), the connecting rod (220), the flexible tube (250) and the lever (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) comprising an electric control valve (310) and a support (320), the support (320) being provided with a third flow channel (330), one end of the connecting rod (220) being inserted into the third flow channel (330), the third flow channel (330) connecting the pressure chamber (130) and the second flow channel (280), and the electric control valve (310) being used to control the opening and closing of the third flow channel (330).

2. The flush valve according to claim 1, characterized in that: A first spring (251) is installed in the flexible tube (250), and two ends of the first spring (251) are respectively abutted 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) comprises a third end (231) and a fourth end (232); a first through hole (233) is formed on the third end (231); a first shaft shoulder (221) is formed on one end of the connecting rod (220); the connecting rod (220) passes 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 greater 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 lever (240) are respectively a fifth end (241) and a sixth end (242); the lever (240) is provided with a second shoulder (243) at a position close to the fifth end (241); the outer diameter of the fifth end (241) is smaller than the hole diameter of the second through hole (234); 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 surface of the fourth end (232) can abut against the second shoulder (243).

4. The flush valve according to claim 3, characterized in that: The second end (272) is provided with a third through hole (273), and a first sealing ring (410) is provided on a 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, characterized in that: A second spring (235) is sleeved on the sleeve (230), 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, characterized in that: The valve body (210) comprises 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), each of the protrusions (214) being distributed in sequence at intervals 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 each of the protrusions (214), and the intervals between each of the protrusions (214) and the first channel are connected. (215) are connected to form the first flow channel (260), the locking member (213) is inserted into 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 chamber (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 shaft 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 shaft shoulder (216). The maximum outer diameter of the second sealing ring (420) is greater than the maximum outer diameter of the fourth shaft shoulder (216). The end face of the second sealing ring (420) can abut against the edge of the water outlet (140). An installation groove (217) is provided on the outer wall of the upper cylinder seat (211). A third sealing ring (430) is sleeved on the installation 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 inserted into 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 connected via the fifth through holes (275).

9. The flush valve according to claim 1, characterized in that: The third flow channel (330) comprises a second channel (331) and a third channel (332) which are interconnected, one end of the connecting rod (220) is coaxially arranged in the second channel (331), the third channel (332) is connected to the pressure chamber (130), and 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 gland (340), the gland (340) is threadedly connected to the mounting opening (150), and the support (320) covers the mounting opening (150) and is clamped between the gland (340) and the mounting opening (150).

11. The flush valve according to claim 10, characterized in that: 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 chamber (351), a second chamber (352) and a third chamber (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 chamber (351); the power supply box (350) is provided with a second screw (312); 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 clamped on the sensing port (354), the pressure plate (360) is locked on the end surface 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, characterized in that: The pressing 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 pressing plate (360) and electrically connected to the power output terminal (361).

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

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