Valve body assembly and water using apparatus

Abstract

The application discloses a valve body assembly and a water equipment, and relates to the field of bathroom equipment. The valve body assembly comprises a shell, an adjusting switch and a piston valve. The adjusting switch is connected with the shell, the piston valve is installed in the interior of the shell and is used for opening or closing a water outlet. The main body of the piston valve is provided with a water passage cavity. The adjusting part comprises a water passing part and an adjusting rod which are connected with each other. The adjusting rod penetrates through the water outlet end of the water passage cavity, and the water passing part is slidably arranged in the water passage cavity and can be adjusted in position by the adjusting switch. When the piston valve is directed to open the water outlet, the adjusting switch can abut against the adjusting rod to drive the water passing part to move through the adjusting rod, so as to control the sectional area of the water passing gap between the water passing part and the water passage cavity, the speed of the piston valve to close the water outlet can be changed, the water outlet adjusting function is realized, and the adjusting rod of the valve body assembly does not need to be arranged at the water outlet, so the reliability of the valve body assembly is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of bathroom equipment, in particular to a valve body assembly and a water using equipment. BACKGROUND

[0002] Different regions and users have different requirements for the water output of the valve body such as a flushing valve. For example, when the flushing valve is used on a urinal, the user hopes to be able to adjust the water output when the urinal is automatically flushed, for example, to reduce the water output under the premise of being able to flush clean, to meet the needs of water conservation. Therefore, in the related art, a flow limiting valve can be added to the water outlet of the flushing valve to control the water output. However, in use, the water flow long-term impacts the flow limiting valve, which is easy to cause the flow limiting valve to be misaligned or deformed, and to cause functional failure and the like. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application proposes a valve body assembly which can conveniently adjust the water output and has high reliability and good stability in operation.

[0004] The present application also proposes a water using equipment having the above valve body assembly.

[0005] According to the valve body assembly of the first aspect of the present application, the valve body assembly comprises:

[0006] A housing is provided with a water inlet and a water outlet, and a pressure maintaining cavity is formed in the housing, and the pressure maintaining cavity and the water outlet are arranged at intervals;

[0007] An adjusting switch is connected to the housing and can adjust the position in the up-down direction;

[0008] A piston valve is installed in the housing and located between the pressure maintaining cavity and the water outlet, and the piston valve is used to open or seal the water outlet, and the piston valve comprises a main body, an adjusting member and a first elastic member, the main body is provided with a water passing cavity, the water inlet is communicated with the pressure maintaining cavity through the water passing cavity, the adjusting member comprises an adjusting rod and a water passing part, the water passing part is arranged in the water passing cavity, a water passing gap is formed between the water passing part and the water passing cavity, the water passing part can slide in the up-down direction to adjust the cross-sectional area of the water passing gap, one end of the adjusting rod is connected with the water passing part, and the other end of the adjusting rod penetrates out of the water outlet end of the water passing cavity, and the first elastic member is used to elastically reset the adjusting member;

[0009] When the piston valve moves towards the pressure maintaining cavity, the piston valve opens the water outlet, the water inlet and the water outlet are communicated, and the adjusting rod abuts against the adjusting switch to control the cross-sectional area of the water passing gap.

[0010] The valve body assembly according to the embodiment of the present application has at least the following advantages:

[0011] The adjusting switch is connected with the shell and can adjust its own position in the up-down direction. The piston valve is installed in the interior of the shell and is used to open or close the water outlet. The main body of the piston valve is provided with a water passage. The adjusting member includes a water passing portion and an adjusting rod connected with each other. The adjusting rod penetrates through the first water passing hole, and the water passing portion is slidably arranged in the water passage in the up-down direction. The speed at which the piston valve closes the water outlet is affected by the pressure difference between the pressure maintaining cavity and the water inlet. The greater the pressure difference, the faster the speed at which the piston valve closes the water outlet. The smaller the pressure difference, the slower the speed at which the piston valve closes the water outlet. Therefore, the closing speed of the piston valve can be controlled by adjusting the pressure difference between the pressure maintaining cavity and the water inlet, so as to adjust the water outlet flow. When the piston valve moves towards the pressure maintaining cavity to open the water outlet, the adjusting switch can move towards the adjusting rod and abut against the adjusting rod, so as to drive the water passing portion to move through the adjusting rod, so as to adjust the sectional area of the water passing gap. For example, when the water passing area is increased, the water replenishment speed in the pressure maintaining cavity is fast, and the water pressure increases fast. Therefore, the piston valve can quickly move towards the water outlet under the action of the pressure of the pressure maintaining cavity, and finally seals the water outlet. For example, when the water passing area is reduced, the water replenishment speed in the pressure maintaining cavity is slow, and the water pressure increases slowly, so as to slowly close the piston valve. Therefore, the water passing area between the water passing portion and the water passage can be adjusted through the adjusting switch, so as to change the speed at which the piston valve closes the water outlet, thereby realizing the water outlet flow adjustment. The adjusting member does not need to be arranged at the water outlet, and is not worried about dislocation, deformation and other conditions caused by the scouring of water flow. Therefore, the working stability of the valve body assembly is high, and the reliability is good.

[0012] According to some embodiments of the present application, the side wall of the water passage is provided with a water passing groove. The width of the water passing groove gradually decreases or gradually increases in the direction close to the pressure maintaining cavity.

[0013] According to some embodiments of the present application, the end wall of the water passage towards the pressure maintaining cavity is provided with a first water passing hole. The adjusting rod penetrates through the first water passing hole. The side of the water passing portion towards the first water passing hole is provided with an annular protrusion. The annular protrusion is provided with a gap. The annular protrusion can abut against the end wall under the action of the elastic force of the first elastic member and is arranged around the first water passing hole. The water passage is connected with the first water passing hole through the gap. The water passing sectional area between the adjusting rod and the side wall of the first water passing hole is greater than the water passing sectional area of the gap.

[0014] According to some embodiments of the present application, the shell is further provided with a water outlet channel communicated with the water outlet, the valve body assembly further comprises a valve and a pressure relief pipeline connected with each other, the pressure relief pipeline is connected with the shell, the pressure relief pipeline is provided with a pressure relief channel, two ends of the pressure relief channel are communicated with the pressure maintaining cavity and the water outlet channel respectively, the valve is used for opening or closing the pressure relief channel, when the valve opens the pressure relief channel, the piston valve moves towards the pressure maintaining cavity, the water outlet is opened, and the water inlet is communicated with the water outlet channel through the water outlet; when the valve closes the pressure relief channel, the piston valve seals the water outlet.

[0015] According to some embodiments of the present application, the shell is further provided with a water storage cavity, the piston valve further comprises a fixing seat, a supporting seat, a plug and a second elastic member, the main body, the fixing seat and the supporting seat are connected in sequence, a water passing channel is formed between the fixing seat and the supporting seat, the plug and the second elastic member are arranged in the water passing channel, the plug can seal the water passing channel under the elastic force of the second elastic member, and the plug can move under the action of water pressure, so that the water inlet, the water storage cavity, the water passing channel and the water outlet are communicated in sequence.

[0016] According to some embodiments of the present application, the water passing channel comprises a first cavity and a second cavity which are both cylindrical, the inner diameter of the first cavity is smaller than that of the second cavity, the plug is provided with a first sealing ring, and the first sealing ring is used for sealing cooperation with the side wall of the first cavity; when the first sealing ring moves to the second cavity under the action of water pressure, the first cavity and the second cavity are communicated.

[0017] According to some embodiments of the present application, the side wall of the second cavity is provided with a plurality of flow guide grooves, and the plurality of flow guide grooves are arranged in a circumferential direction of the water passing channel.

[0018] According to some embodiments of the present application, the piston valve further comprises a gasket, a fixing seat and a supporting seat, the fixing seat and the supporting seat are connected, the gasket is sleeved on the fixing seat and located between the fixing seat and the supporting seat, and the gasket can be sealingly matched with the inner wall of the shell to seal the water outlet.

[0019] According to some embodiments of the present application, one side of the fixing seat facing the gasket and one side of the supporting seat facing the gasket are both provided with a first anti-loosening rib, and the first anti-loosening rib abuts against the gasket.

[0020] The water using device according to the second aspect of the embodiments of the present application comprises the valve body assembly according to the above-mentioned embodiments.

[0021] The water using device according to the embodiments of the present application has at least the following beneficial effects:

[0022] The adjusting switch is connected with the shell and can adjust its own position in the up-down direction. The piston valve is installed in the interior of the shell and is used to open or close the water outlet. The main body of the piston valve is provided with a water passage cavity. The adjusting member comprises a water passing part and an adjusting rod connected with each other. The adjusting rod is arranged in the first water passing hole, and the water passing part is arranged in the water passage cavity in the up-down direction. When the piston valve moves towards the pressure maintaining cavity to open the water outlet, the adjusting switch can move towards the adjusting rod and abut against the adjusting rod, so as to drive the water passing part to move through the adjusting rod, so as to adjust the sectional area of the water passing gap. For example, when the water passing area is increased, the water replenishment speed in the pressure maintaining cavity is fast, and the water pressure increasing speed is also fast. Therefore, the piston valve can quickly move towards the water outlet under the action of the pressure of the pressure maintaining cavity, and finally seals the water outlet. For example, when the water passing area is reduced, the water replenishment speed in the pressure maintaining cavity is slow, and the water pressure increasing speed is also slow, so that the piston valve can be slowly closed. Therefore, by adjusting the water passing area between the water passing part and the water passage cavity through the adjusting switch, the closing speed of the piston valve to the water outlet can be changed, so that the water outlet adjusting function is realized. The adjusting member does not need to be arranged at the water outlet, and does not need to worry about the dislocation and deformation caused by the water flow, so that the working stability of the valve body assembly is high, and the reliability is good.

[0023] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following description and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0024] The application will be further described below in conjunction with the drawings and examples, wherein:

[0025] Figure 1 is a structural schematic view of a valve body assembly of an embodiment of the application;

[0026] Figure 2 is an exploded view of a valve body assembly of an embodiment of the application;

[0027] Figure 3 is a sectional view of a plug in a first position of an embodiment of the application;

[0028] Figure 4 is a sectional view of a plug in a second position of an embodiment of the application;

[0029] Figure 5 is a sectional view of a piston valve opening a water outlet of an embodiment of the application;

[0030] Figure 6 is a sectional view of a piston valve of an embodiment of the application;

[0031] Figure 7is a side view of a piston valve of an embodiment of the present application;

[0032] Figure 8 is Figure 7 is a sectional view at A-A in

[0033] Figure 9 is a structural schematic view of an adjusting member of an embodiment of the present application;

[0034] Figure 10 is a sectional schematic view of an adjusting seat of an embodiment of the present application;

[0035] Figure 11 is a sectional view of a plug and a spring of an embodiment of the present application;

[0036] Figure 12 is an exploded view of a piston valve of an embodiment of the present application;

[0037] Figure 13 is Figure 12 is an exploded view of a piston valve from another perspective in

[0038] Figure 14 is a sectional view of a fixing seat of an embodiment of the present application.

[0039] Reference signs:

[0040] valve body assembly 1000;

[0041] housing 100; water inlet 110; water storage cavity 120; water outlet 130; pressure maintaining cavity 140; water outlet passage 150; adjusting switch 160;

[0042] piston valve 200; adjusting seat 201; main body 210; water passing cavity 211; water inlet passage 212; second sealing ring 213; second anti-loosening rib 214; water passing hole 215; water passing cavity 216; end wall 2161; first water passing hole 217; water passing groove 218; positioning protrusion 219; fixing seat 220; water passing passage 221; first cavity 2211; second cavity 2212; flow guiding groove 2213; second water passing hole 222; first anti-loosening rib 223; anti-loosening groove 224; support seat 230; third water passing hole 231; guiding rib 232; plug 240; first sealing ring 241; first column 242; second column 243; limiting groove 244; second elastic member 250; gasket 260; filter screen 270; adjusting member 280; adjusting rod 281; water passing part 282; annular protrusion 283; notch 284; first elastic member 290;

[0043] pressure relief pipeline 400; pressure relief passage 410; valve 420. DETAILED DESCRIPTION

[0044] Embodiments of the present application are described below in the accompanying drawings, of which examples are shown, wherein identical or similar reference numerals represent identical or similar elements or elements having identical or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only, for the purpose of explanation of the present application, and are not to be understood as a limitation of the present application.

[0045] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0046] In the description of the present application, several meanings are one or more, and the meaning of multiple is two or more, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If the first, second is described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of technical features indicated.

[0047] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0048] Referring to Figure 1 and Figure 2 The valve body assembly 1000 of an embodiment of the present application can be used for a valve body such as a flush valve, which can be applied to a water using device such as a squatting toilet or a urinal. The valve body assembly 1000 of the embodiment of the present application can conveniently adjust the water flow, and has high reliability and good stability in operation.

[0049] Referring to Figure 3 and Figure 5As shown, in the embodiment of the present application, the valve body assembly 1000 comprises a housing 100, an adjusting switch 160, a piston valve 200, a valve 420 and a pressure relief pipeline 400. The housing 100 is provided with a water inlet 110, a pressure maintaining cavity 140, a water outlet 130 and a water outlet channel 150. The pressure maintaining cavity 140 and the water outlet 130 are arranged in a spaced manner, and the water outlet 130 and the water outlet channel 150 are communicated. The adjusting switch 160 is rotatably connected to the housing 100, and one end of the adjusting switch 160 can enter into the pressure maintaining cavity 140. The distance of the adjusting switch 160 extending into the pressure maintaining cavity 140 can be adjusted by rotating the adjusting switch 160. The pressure relief pipeline 400 is connected to the housing 100, and the pressure relief pipeline 400 is provided with a pressure relief channel 410. The two ends of the pressure relief channel 410 are communicated with the pressure maintaining cavity 140 and the water outlet channel 150, respectively. The valve 420 is connected to the pressure relief pipeline 400, and the valve 420 is used to open or close the pressure relief channel 410. The piston valve 200 is installed in the interior of the housing 100, and is located between the pressure maintaining cavity 140 and the water outlet 130. The piston valve 200 is used to open or seal the water outlet 130.

[0050] Referring to Figure 6 , Figure 9 and Figure 10 , the piston valve 200 comprises a main body 210, an adjusting member 280 and a first elastic member 290. The main body 210 comprises an adjusting seat 201, and the adjusting seat 201 is formed with a water passing cavity 216. The water passing cavity 216 is provided with a first water passing hole 217 at an end wall 2161 near one end of the pressure maintaining cavity 140. The water inlet 110, the water passing cavity 216, the first water passing hole 217 and the pressure maintaining cavity 140 are communicated in sequence, that is, water passes through the water inlet 110, the water passing cavity 216, the first water passing hole 217 and enters into the pressure maintaining cavity 140 in sequence. The adjusting member 280 comprises an adjusting rod 281 and a water passing part 282. One end of the adjusting rod 281 is connected to the water passing part 282, and the other end of the adjusting rod 281 passes through the first water passing hole 217. The water passing part 282 is slidably arranged in the water passing cavity 216 along the up-down direction, and a water passing gap is formed between the water passing part 282 and the water passing cavity 216. When the water passing part 282 moves along the up-down direction, the cross-sectional area of the water passing gap between the water passing part 282 and the water passing cavity 216 will change. The first elastic member 290 is connected to the water passing part 282, and the first elastic member 290 is used to elastically reset the adjusting member 280. The first elastic member 290 can be a spring, a rubber having elasticity, a silica gel member or the like.

[0051] For the convenience of description, the valve body assembly 1000 is applied to a urinal, and the valve 420 is an inductive electromagnetic valve. When the inductive electromagnetic valve detects that a user approaches the urinal, the inductive electromagnetic valve will open the pressure relief channel 410, and start automatic flushing. After a preset time, the pressure relief channel 410 is automatically closed.

[0052] The speed of opening and closing the water outlet 130 by the piston valve 200 is affected by the pressure difference between the pressure maintaining cavity 140 and the water inlet 110. The greater the pressure difference, the faster the speed of opening or closing the water outlet 130 by the piston valve 200. The smaller the pressure difference, the slower the speed of opening or closing the water outlet 130 by the piston valve 200. Therefore, the speed of opening or closing the piston valve 200 can be controlled by adjusting the pressure difference between the pressure maintaining cavity 140 and the water inlet 110, so as to adjust the water outlet amount of the water outlet 130.

[0053] When the inductive electromagnetic valve closes the pressure relief passage 410, the piston valve 200 seals the water outlet 130 under the water pressure in the pressure maintaining cavity 140. At this time, the adjusting switch 160 and the adjusting rod 281 are separated, so that the water passing portion 282 abuts against the end wall 2161 under the elastic force of the first elastic member 290. The water in the water passing cavity 216 can still enter the pressure maintaining cavity 140 from the first water passing hole 217. Therefore, when the inductive electromagnetic valve opens the pressure relief passage 410, the water in the pressure maintaining cavity 140 enters the water outlet passage 150 through the pressure relief passage, and finally is discharged into the urinal.

[0054] When the piston valve 200 opens the water outlet 130, the adjusting switch 160 can be rotated to make the adjusting switch 160 abut against the adjusting rod 281, so as to adjust the relative position between the water passing portion 282 and the water passing cavity 216. For example, after the water passing portion 282 moves, the cross-sectional area of the water passing gap between the water passing portion 282 and the water passing cavity 216 is greater than that of the original position. At this time, the water replenishment speed in the pressure maintaining cavity 140 is faster, and the water pressure increases faster. Therefore, the piston valve 200 can move to the direction of the water outlet 130 under the pressure of the pressure maintaining cavity 140, and finally seals the water outlet 130, so as to reduce the water outlet amount of the water outlet 130, and realize the water outlet amount adjustment. Alternatively, after the water passing portion 282 moves, the cross-sectional area of the water passing gap between the water passing portion 282 and the water passing cavity 216 is smaller than that of the original position. At this time, the water replenishment speed in the pressure maintaining cavity 140 is slower, and the water pressure increases slower. Therefore, the piston valve 200 can move to the direction of the water outlet 130 under the pressure of the pressure maintaining cavity 140 at a slower speed, and finally seals the water outlet 130, so as to increase the water outlet amount of the water outlet 130.

[0055] By adopting the above scheme, the water outlet amount can be adjusted by rotating the adjusting switch 160, so that the water outlet amount adjustment is convenient. The adjusting member 280 does not need to be arranged at the water outlet 130, and does not need to worry about the displacement and deformation caused by the water flow, so that the working stability of the valve body assembly 1000 is high, and the reliability is good.

[0056] Referring to Figure 7 , Figure 8 , Figure 9 and Figure 10As shown, in the embodiment of the present application, the side wall of the water passing cavity 216 is provided with a water passing groove 218, and the width of the water passing groove 218 gradually decreases from the lower part to the upper part, i.e. the direction close to the pressure maintaining cavity 140. It can be understood that the water passing part 282 can be in sliding fit with the side wall of the water passing cavity 216, and plays a guiding role, and water can enter the pressure maintaining cavity 140 through the water passing groove 218. For example, when the water passing part 282 moves from the upper part to the lower part, the cross-sectional area of the water passing gap between the water passing part 282 and the water passing cavity 216 gradually increases, the water inflow in the pressure maintaining cavity 140 gradually increases, the pressure rising speed gradually accelerates, and the speed of the piston valve 200 closing the water outlet 130 can be gradually increased, so as to gradually reduce the water outlet flow. Therefore, by using the above scheme, the water outlet flow can be steplessly adjusted, the water passing part 282 can be stopped at a suitable position by adjusting the switch 160, and the water outlet flow of the urinal can be determined each time, so as to meet the water demand of different users. It should be noted that in another embodiment of the present application, the width of the water passing groove 218 can also gradually increase from the lower part to the upper part, and a suitable scheme can be selected according to the actual situation.

[0057] Referring to Figure 8 and Figure 10 As shown, in the embodiment of the present application, the water passing groove 218 is provided with a plurality of water passing grooves 218, and the plurality of water passing grooves 218 are arranged along the circumference of the water passing cavity 216. It can be understood that by using the scheme of the plurality of water passing grooves 218, the water passing efficiency can be improved. When a part of the water passing grooves 218 are blocked by impurities, the other water passing grooves 218 can also play a water passing role, so as to improve the reliability of the valve body assembly 1000.

[0058] Referring to Figure 9As shown, in the embodiment of the present application, the water passing portion 282 is provided with an annular protrusion 283 on the side facing the first water passing hole 217, and the annular protrusion 283 is further provided with a gap 284. The water passing cross-sectional area between the adjusting rod 281 and the side wall of the first water passing hole 217 is greater than the water passing cross-sectional area of the gap 284, so that the water passing portion 282 can adjust the water flow by changing the cross-sectional area of the water passing gap when moving. When the piston valve 200 seals the water outlet 130, the adjusting switch 160 and the adjusting rod 281 are separated, the annular protrusion 283 can abut against the end wall 2161 of the water passing cavity 216 under the elastic force of the first elastic member 290, and the annular protrusion 283 is arranged around the first water passing hole 217. The water passing cavity 216 is communicated with the first water passing hole 217 through the gap 284. Therefore, the water in the water passing cavity 216 enters the first water passing hole 217 through the gap 284, and then enters the pressure maintaining cavity 140 through the first water passing hole 217. Therefore, when the annular protrusion 283 abuts against the end wall 2161 of the water passing cavity 216, the water in the water passing cavity 216 enters the first water passing hole 217 through the gap 284, and the water passing cross-sectional area is the smallest. When it is needed to open the water outlet 130 of the piston valve 200, the water in the pressure maintaining cavity 140 replenishes at the slowest speed, and the pressure drops quickly, so that the piston valve 200 can quickly open the water outlet 130, and meet the requirement of the user to flush water in the first time when using.

[0059] In a cold environment, the water in the water storage cavity of the valve body such as the flushing valve is easy to freeze. When the water freezes, the volume expands, which may cause the shell to crack. In the related art, the risk of cracking can be reduced by increasing the strength of the shell, for example, by increasing the wall thickness of the shell and adding reinforcing ribs, but the effect is limited, and the risk of cracking is still high. In another scheme, an expansion cavity can also be arranged inside the flushing valve. When the water freezes, it will push the spring in the expansion cavity to compress and deform, thereby increasing the storage volume in the flushing valve. In the above-mentioned expansion cavity scheme, affected by the size of the water storage cavity, the larger the water storage cavity, the larger the space required by the expansion cavity. Therefore, it will cause the size of the flushing valve to increase, which increases the production cost and manufacturing difficulty.

[0060] To solve the above-mentioned freezing and cracking problem, refer to Figure 3 and Figure 4As shown, in an embodiment of the present invention, the piston valve 200 further includes a fixed seat 220, a support seat 230, a plug 240, and a second elastic element 250. The main body 210 and the fixed seat 220 are connected, forming a water passage cavity 211 between them. The water storage cavity 120 communicates with the water passage cavity 211. The fixed seat 220 and the support seat 230 are connected, and a water passage channel 221 is provided between them. A second water passage hole 222 is provided at the end of the fixed seat 220 facing the main body 210, and a third water passage hole 231 is provided at the end of the support seat 230 away from the fixed seat 220. The water passage cavity 211 can be connected to the outlet 130 sequentially through the second water passage hole 222, the water passage channel 221, the third water passage hole 231, and the outlet 130. The plug 240 and the second elastic element 250 are both disposed within the water passage channel 221. For example, the second elastic element 250 can be a spring, elastic rubber, silicone, etc. The plug 240 can seal the water passage 221 under the elastic force of the second elastic element 250, and the plug 240 can move away from the second water passage 222 so that the water storage chamber 120, the second water passage 222, the water passage 221 and the outlet 130 are connected in sequence.

[0061] For example, the plug 240 has a first position and a second position, and the switching between the first and second positions can be achieved by the elastic force of the second elastic element 250 and the water pressure. When the valve body assembly 1000 is in normal use, that is, when the water in the water storage chamber 120 is not frozen, the plug 240 moves to the first position under the elastic force of the second elastic element 250, for example... Figure 3 The position shown in the diagram is indicated by the dashed arrows, which represent the direction of water flow. The plug 240 seals the second water passage 222, preventing water from entering the outlet 130 through the water passage 221. Furthermore, the water pressure before freezing is insufficient to overcome the elastic force of the second elastic element 250, thus the plug 240 maintains the sealed state of the water passage 221. When the temperature drops and the water in the water storage chamber 120 freezes, the water pressure in the water storage chamber 120 increases, exceeding the pressure during normal use. Therefore, it can overcome the elastic force of the second elastic element 250, causing the plug 240 to move to the second position, for example... Figure 4 The position shown in the figure is indicated by the dashed arrows, which indicate the direction of water flow. At this time, the water passage 211 is connected to the second water passage 222, the water passage 221, the third water passage 231 and the outlet 130 in sequence, so that a part of the water in the water storage chamber 120 is discharged through the outlet 130.

[0062] By the above scheme, after discharging part of the water, the risk of expansion cracking caused by water freezing can be effectively reduced, the valve body assembly 1000 is not affected by the size of the water storage cavity 120, and the structure of the piston valve 200 does not need to be redesigned according to the size of the water storage cavity 120, thereby improving the versatility of the valve body assembly 1000, and reducing the production cost and manufacturing difficulty.

[0063] With reference to Figure 3 As shown in the drawings, in the embodiment of the present application, when the plug 240 is in the first position, the upper end face of the plug 240 can block the second water passage hole 222. For example, the upper end face of the plug 240 can be provided with a rubber piece, which can be a conical structure, and the rubber piece is arranged in the second water passage hole 222 and sealingly fits with the side wall of the second water passage hole 222, thereby blocking the second water passage hole 222. Alternatively, the rubber piece on the upper end face of the plug 240 abuts against the upper end face of the water passage 221, thereby blocking the second water passage hole 222. The appropriate scheme is selected according to the actual situation.

[0064] With reference to Figure 6 and Figure 11 As shown in the drawings, in the embodiment of the present application, the water passage 221 includes a first cavity 2211 and a second cavity 2212, both of which are cylindrical, the first cavity 2211 is located above the second cavity 2212, the first cavity 2211 and the second water passage hole 222 are communicated, the second cavity 2212 and the third water passage hole 231 are communicated, and the inner diameter of the first cavity 2211 is smaller than the inner diameter of the second cavity 2212. The plug 240 includes a first sealing ring 241, a first column 242 and a second column 243, the first column 242 is connected to the upper end of the second column 243, the diameter of the first column 242 is smaller than the diameter of the second column 243, and the first sealing ring 241 is sleeved on the first column 242. When the plug 240 is in the first position, the first column 242 is located in the first cavity 2211, and the first sealing ring 241 sealingly fits with the side wall of the first cavity 2211. When the plug 240 is in the second position, the first sealing ring 241 is located in the second cavity 2212, so that the first cavity 2211 and the second cavity 2212 are communicated, and therefore water can enter the second cavity 2212 through the first cavity 2211 and finally be discharged from the water outlet 130. By the above scheme, the plug 240 can block or open the water passage 221 in a narrow space, so the required stroke of the plug 240 is shorter, and the piston valve 200 has a smaller volume and a compact structure.

[0065] With reference to Figure 14As shown, in the embodiment of the present application, the sidewall of the second cavity 2212 is provided with a flow guide groove 2213, which extends in the up-down direction. When the water passes through the first cavity 2211, it can flow to the water outlet 130 along the flow guide groove 2213, thereby increasing the water output. Among them, the flow guide groove 2213 is provided with multiple, for example, four, four flow guide grooves 2213 are arranged along the circumference of the second cavity 2212. By arranging multiple flow guide grooves 2213, the water output is further increased, and the risk of cracking of the valve body assembly 1000 is effectively reduced.

[0066] Referring to Figure 11 As shown, in the embodiment of the present application, the end of the plug 240 facing the support seat 230 is provided with a limiting groove 244, and one end of the second elastic member 250 is installed in the limiting groove 244. The other end of the second elastic member 250 is connected with the inner wall of the support seat 230, for example, can be abutted. The limiting groove 244 is used to limit the position of the second elastic member 250, so as to avoid the second elastic member 250 from being misaligned, offset, etc., thereby improving the reliability of the piston valve 200 and reducing the failure rate. It should be noted that in another embodiment of the present application, when the second elastic member 250 is a spring, the end of the plug 240 facing the support seat 230 can also be provided with a protruding column, and the spring is sleeved on the protruding column. Similarly, the position of the spring can be limited, and the appropriate scheme can be selected according to the actual situation.

[0067] Referring to Figure 5 and Figure 6 As shown, in the embodiment of the present application, the shell 100 is also provided with a pressure maintaining cavity 140 and a water outlet passage 150. The pressure maintaining cavity 140 is located at the end of the piston valve 200 away from the water outlet 130, and the water outlet passage 150 is arranged below the piston valve 200 and communicates with the water outlet 130. The main body 210 is provided with a water inlet passage 212, and the water storage cavity 120 communicates with the pressure maintaining cavity 140 through the water inlet passage 212, so that the water in the water storage cavity 120 can enter the pressure maintaining cavity 140 through the water inlet passage 212. The valve body assembly 1000 further comprises a pressure relief pipeline 400 and a valve 420. The pressure relief pipeline 400 is connected with the shell 100, and the pressure relief pipeline 400 is provided with a pressure relief passage 410. The two ends of the pressure relief passage 410 communicate with the pressure maintaining cavity 140 and the water outlet passage 150 respectively, so that the water can enter the pressure relief passage 410 from the pressure maintaining cavity 140, and then enter the water outlet passage 150 from the pressure relief passage 410. The valve 420 is connected with the pressure relief pipeline 400, and the valve 420 is used to control the opening and closing of the pressure relief passage 410.

[0068] When the valve body assembly 1000 is in normal use, such as as a flushing valve, the valve 420 can be a sensing solenoid valve. Upon detecting a person, it opens the pressure relief channel 410. At this time, the water in the pressure holding chamber 140 is discharged through the pressure relief channel 410 to the outlet channel 150, causing a decrease in water pressure within the pressure holding chamber 140. Therefore, the piston valve 200 moves towards the pressure holding chamber 140, thereby opening the outlet 130, which was originally sealed by the piston valve 200. For example, it moves towards... Figure 5 As shown in the diagram, the dashed arrow indicates the direction of water flow. At this location, water in the storage chamber 120 can be directly discharged through the outlet 130, resulting in a large flow rate, which facilitates flushing the toilet. After a period of time, the solenoid valve automatically closes the pressure relief channel 410, causing the pressure in the pressure-holding chamber 140 to gradually increase, resulting in the piston valve 200 descending to reseal the outlet 130. Using this method, the piston valve 200 is simple and convenient to operate, requiring no manual contact from the user, thus reducing the risk of cross-infection.

[0069] Reference Figure 6 As shown, in an embodiment of the present invention, a second sealing ring 213 is provided on the side wall of the main body 210. The second sealing ring 213 is arranged around the circumference of the main body 210, and the second sealing ring 213 and the side wall of the pressure holding cavity 140 are sealed together to reduce the leakage of water in the pressure holding cavity 140 through the gap between the piston valve 200 and the pressure holding cavity 140.

[0070] Continue to refer to Figure 6 As shown in the embodiment of the present invention, the piston valve 200 further includes an annular gasket 260, which is sleeved on the fixed seat 220 and located between the fixed seat 220 and the support seat 230. The gasket 260 can be made of materials such as silicone or rubber, and is used to abut against the step inside the housing 100, thereby sealing the outlet 130. When the piston valve 200 moves upward, the gasket 260 separates from the step, opening the outlet 130 and allowing water to enter the outlet channel 150 from the water storage chamber 120 through the outlet 130. Using the gasket 260 improves the sealing effect when sealing the outlet 130 and reduces leakage.

[0071] Reference Figure 12 As shown in the embodiment of the present invention, the peripheral wall of the support base 230 is provided with a plurality of guide ribs 232, which are spaced apart along the circumference of the support base 230. The guide ribs 232 can abut against the side wall of the water outlet channel 150, thereby restricting the position of the support base 230 and preventing the support base 230 from swaying or misaligning.

[0072] Reference Figure 12 and Figure 13As shown, in the embodiment of the present application, the fixed seat 220 and the support seat 230 are fixed by threaded connection. Therefore, the side of the fixed seat 220 facing the gasket 260 and the side of the support seat 230 facing the gasket 260 are both provided with a first anti-loosening rib 223, the first anti-loosening rib 223 and the gasket 260 abut, thereby limiting the relative rotation of the fixed seat 220 and the support seat 230, reducing the risk of loosening of the support seat 230 and the fixed seat 220, and improving the reliability of the valve body assembly 1000. In another embodiment of the present application, the first anti-loosening ribs 223 provided on the fixed seat 220 and the support seat 230 can be provided in plurality. Taking the fixed seat 220 as an example, the plurality of first anti-loosening ribs 223 are radially distributed on the end face of the fixed seat 220, and therefore the friction between the fixed seat 220 and the gasket 260 can be further increased, and the relative rotation between the fixed seat 220 and the support seat 230 can be effectively limited. In another embodiment of the present application, the plurality of first anti-loosening ribs 223 can also be connected in a mesh structure, and the appropriate scheme is selected according to the actual situation.

[0073] With reference to Figure 12 and Figure 13 As shown, in the embodiment of the present application, the main body 210 and the fixed seat 220 can be fixed by threaded connection. The side of the main body 210 facing the fixed seat 220 is provided with a second anti-loosening rib 214, and the side of the fixed seat 220 facing the main body 210 is provided with an anti-loosening groove 224, when the main body 210 and the fixed seat 220 are connected, the second anti-loosening rib 214 and the anti-loosening groove 224 are clamped, thereby limiting the relative rotation between the main body 210 and the fixed seat 220, and the risk of loosening between the main body 210 and the fixed seat 220 can be reduced. In another embodiment of the present application, the main body 210 can be provided with two second anti-loosening ribs 214, the two second anti-loosening ribs 214 are oppositely arranged, and the anti-loosening groove of the fixed seat 220 is also provided with two, and the positions correspond to the second anti-loosening ribs 214. Therefore, the stability of the connection between the main body 210 and the fixed seat 220 can be further increased. It should be noted that in another embodiment of the present application, the side of the main body 210 facing the fixed seat 220 can also be provided with an anti-loosening groove 224, and the side of the fixed seat 220 facing the main body 210 is provided with a second anti-loosening rib 214, and the appropriate scheme is selected according to the actual situation, which is not limited in the present application.

[0074] With reference to Figure 6 and Figure 12As shown, in the embodiment of the present application, the sidewall of the main body 210 is provided with a water passage hole 215, which can be provided with one or more, for example, four, four water passage holes 215 are arranged along the circumference of the main body 210, and the water storage cavity 120 can be communicated with the water passage hole 215 and the water passage cavity 211. The piston valve 200 further comprises a filter screen 270, which is arranged around the water outlet structure and covers the water passage hole 215. The filter screen 270 is used to filter impurities in the water, reducing the possibility of impurities blocking the water outlet 130.

[0075] The water using device of an embodiment of the present application comprises the valve body assembly 1000 of the above embodiment. The water using device can be a toilet, a urinal, etc. The water using device of the embodiment of the present application adopts the valve body assembly 1000 of the above embodiment, the adjusting switch 160 of the valve body assembly 1000 is connected with the shell 100, and the adjusting switch 160 can adjust its own position in the up-down direction. The piston valve 200 is installed inside the shell 100 and is used to open or close the water outlet 130, the main body 210 of the piston valve 200 is provided with a water passage cavity 216, the adjusting member 280 comprises a water passage part 282 and an adjusting rod 281 connected with each other, the adjusting rod 281 is arranged through the first water passage hole 217, and the water passage part 282 is arranged in the water passage cavity 216 in the up-down direction. When the piston valve 200 moves towards the pressure maintaining cavity 140 to open the water outlet 130, the adjusting switch 160 can move towards the adjusting rod 281 and abut against the adjusting rod 281 to drive the water passage part 282 to move through the adjusting rod 281 to adjust the sectional area of the water passage gap. For example, when the water passage area is increased, the water replenishment speed in the pressure maintaining cavity 140 is faster, and the water pressure increases faster, so that the piston valve 200 can quickly move towards the water outlet 130 under the pressure of the pressure maintaining cavity 140 and finally seal the water outlet 130. For example, when the water passage area is reduced, the water replenishment speed in the pressure maintaining cavity 140 is slower, and the water pressure increases slower, so that the piston valve 200 can be slowly closed. Therefore, by adjusting the water passage area between the water passage part 282 and the water passage cavity 216 through the adjusting switch 160, the speed of the piston valve 200 closing the water outlet 130 can be changed, so that the water outlet adjusting function is realized. The adjusting member 280 does not need to be arranged at the water outlet 130, and there is no need to worry about the displacement and deformation of the adjusting member 280 caused by the water flow, so that the working stability of the valve body assembly 1000 is high and the reliability is good.

[0076] Since the water using device adopts all the technical solutions of the valve body assembly 1000 of the above embodiment, at least all the beneficial effects brought by the technical solutions of the above embodiment are possessed, which will not be repeated here.

[0077] The embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application.

Claims

1. A valve body assembly, characterized in that, include: The outer casing has an inlet and an outlet, and a pressure-holding cavity is formed inside the outer casing. The pressure-holding cavity and the outlet are spaced apart. An adjustment switch is connected to the housing and its position can be adjusted vertically. A piston valve is installed inside the housing and located between the pressure-holding chamber and the outlet. The piston valve is used to open or seal the outlet. The piston valve includes a body, an adjusting member, and a first elastic member. The body includes an adjusting seat with a water passage chamber. The inlet communicates with the pressure-holding chamber through the water passage chamber. The adjusting member includes an adjusting rod and a water passage portion. The water passage portion is located inside the water passage chamber, and a water passage gap is formed between the water passage portion and the water passage chamber. The water passage portion can slide in the up-down direction to adjust the cross-sectional area of ​​the water passage gap. One end of the adjusting rod is connected to the water passage portion, and the other end of the adjusting rod extends through the outlet of the water passage chamber. The first elastic member is used to elastically reset the adjusting member. When the piston valve moves toward the pressure-holding chamber, the piston valve opens the water outlet, the water inlet and the water outlet are connected, and the adjusting rod abuts against the adjusting switch to control the cross-sectional area of ​​the water passage gap.

2. The valve body assembly according to claim 1, characterized in that, The side wall of the water passage cavity is provided with a water passage groove, and the width of the water passage groove gradually decreases or gradually increases along the direction close to the pressure holding cavity.

3. The valve body assembly according to claim 1, characterized in that, The end wall of the water passage cavity facing the pressure holding cavity is provided with a first water passage hole. The adjusting rod passes through the first water passage hole. The water passage part is provided with an annular protrusion on the side facing the first water passage hole. The annular protrusion is provided with a notch. The annular protrusion can abut against the end wall under the elastic force of the first elastic element and is arranged around the first water passage hole. The water passage cavity is connected to the first water passage hole through the notch. The water passage cross-sectional area between the adjusting rod and the side wall of the first water passage hole is larger than the water passage cross-sectional area of ​​the notch.

4. The valve body assembly according to claim 1, characterized in that, The outer casing is also provided with a water outlet channel communicating with the water outlet. The valve body assembly also includes a valve and a pressure relief pipe connected to it. The pressure relief pipe is connected to the outer casing and has a pressure relief channel. The two ends of the pressure relief channel are respectively connected to the pressure holding chamber and the water outlet channel. The valve is used to open or close the pressure relief channel. When the valve opens the pressure relief channel, the piston valve moves toward the pressure holding chamber, the water outlet opens, and the water inlet is connected to the water outlet channel through the water outlet. When the valve closes the pressure relief channel, the piston valve seals the outlet.

5. The valve body assembly according to claim 1, characterized in that, The outer casing is also provided with a water storage chamber. The piston valve further includes a fixed seat, a support seat, a plug, and a second elastic element. The main body, the fixed seat, and the support seat are connected in sequence, and a water passage is formed between the fixed seat and the support seat. The plug and the second elastic element are both located in the water passage. The plug can seal the water passage under the elastic force of the second elastic element, and the plug can move under the action of water pressure so that the water inlet, the water storage chamber, the water passage, and the water outlet are connected in sequence.

6. The valve body assembly according to claim 5, characterized in that, The water passage includes a first cavity and a second cavity, both of which are cylindrical. The inner diameter of the first cavity is smaller than that of the second cavity. The plug is provided with a first sealing ring, which is used to seal against the side wall of the first cavity. When the first sealing ring moves to the second cavity under water pressure, the first cavity and the second cavity are connected.

7. The valve body assembly according to claim 6, characterized in that, The sidewall of the second cavity is provided with a plurality of flow guide grooves, which are spaced apart circumferentially along the water passage.

8. The valve body assembly according to claim 1, characterized in that, The piston valve further includes a gasket, a fixed seat, and a support seat. The fixed seat and the support seat are connected. The gasket is sleeved on the fixed seat and located between the fixed seat and the support seat. The gasket can seal against the inner wall of the housing to seal the water outlet.

9. The valve body assembly according to claim 8, characterized in that, The fixing seat is provided with a first anti-loosening rib on the side facing the gasket and the support seat is provided with a first anti-loosening rib on the side facing the gasket, and the first anti-loosening rib abuts against the gasket.

10. A water-using device, characterized in that, The valve body assembly includes any one of claims 1 to 9.

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