CN219841058U - Flushing valve - Google Patents

Abstract

The utility model discloses a flushing valve, which comprises a valve body and a flow regulating structure, wherein the valve body comprises a water inlet pipe and a water outlet pipe which are communicated, and the water inlet pipe is provided with a linear water inlet channel; the flow regulating structure comprises a branch pipe and a regulating piece, wherein the branch pipe is connected to one side of the water inlet pipe and is communicated with the water inlet channel, and the regulating piece is arranged in the branch pipe and can reciprocate along the axial direction of the branch pipe relative to the branch pipe so as to regulate the size of the cross section of the water inlet channel. The flushing valve provided by the utility model has a simple structure, and solves the problems of complex die opening and higher processing cost of the existing flushing valve.

Description

Flushing valve

Technical Field

The utility model relates to the technical field of flushing control, in particular to a flushing valve.

Background

Flush valves are used in an increasing number of settings, such as toilets, restrooms, shower stalls, etc. With the increasing supply of water resources on earth, the ability of flush valves to conserve water during the controlled flushing process is also important. The control and the switch of the water flow can be realized, and the flushing valve is an important step for improving the water saving source.

The existing flushing valve generally adopts a valve core to switch and regulate and control flow, the valve core consists of a valve rod, a valve head and a valve plate, the structure is complex, and the processing difficulty is high; the flow regulating structure generally has the water flow direction of side inlet and bottom outlet or bottom inlet and side outlet, the water passing structure is complex, the die opening cost is high, and the processing cost of the flushing valve is further increased.

Disclosure of Invention

The utility model mainly aims to provide a flushing valve, which aims to solve the problems of complex structure and higher processing cost of the existing flushing valve.

In order to achieve the above object, the present utility model provides a flushing valve, which comprises a valve body and a flow regulating structure, wherein the valve body comprises a water inlet pipe and a water outlet pipe which are communicated, and the water inlet pipe is formed with a linear water inlet channel; the flow regulating structure comprises a branch pipe and a regulating piece, wherein the branch pipe is connected to one side of the water inlet pipe and is communicated with the water inlet channel, and the regulating piece is arranged in the branch pipe and can reciprocate along the axial direction of the branch pipe relative to the branch pipe so as to regulate the size of the cross section of the water inlet channel.

In an embodiment of the utility model, a groove is formed in a side wall, away from the branch pipe, of the water inlet channel, and one end of the adjusting piece is inserted into the groove so that the water inlet channel is in a closed state.

In an embodiment of the present utility model, a sealing sleeve is sleeved at one end of the adjusting member, which is close to the water inlet channel, and one end of the branch pipe extends into the water inlet channel and is provided with a through hole, and the sealing sleeve is in interference fit with the through hole.

In an embodiment of the utility model, the sealing sleeve extends to the end part of one end of the adjusting piece, and when the water inlet channel is in a closed state, the sealing sleeve is abutted with the bottom of the groove.

In an embodiment of the present utility model, the sealing sleeve is made of rubber;

and/or the bottom of the groove and the end part of the sealing sleeve are provided with chamfers.

In an embodiment of the utility model, the adjusting member is a screw, and a connecting portion is convexly arranged in the middle of the screw, and is in threaded connection with the branch pipe.

In an embodiment of the present utility model, a stop portion is protruding towards an end portion of the water inlet channel of the screw, and two ends of the sealing sleeve respectively abut against the stop portion and the connecting portion;

and/or the end face of the screw far away from the water inlet channel is provided with a rotary groove.

In an embodiment of the utility model, the flow adjusting structure further includes a gland, the gland is screwed on one end of the branch pipe far away from the water inlet channel and sleeved on one end of the screw rod, and when the water inlet channel is in a fully opened state, the connecting part is abutted against the end face of the gland located in the branch pipe.

In one embodiment of the utility model, a circle of limiting table is convexly arranged on the outer surface of the gland, and the limiting table is propped against the end surface of the branch pipe;

and/or a sealing ring is arranged between the outer peripheral wall of the gland and the inner wall of the branch pipe.

In one embodiment of the utility model, a sealing ring is arranged between the outer peripheral wall of the screw and the inner wall of the gland.

The flushing valve provided by the technical scheme of the utility model comprises the valve body and the flow regulating structure, wherein the valve body comprises the water inlet pipe and the water outlet pipe which are communicated, the water inlet channel formed by the water inlet pipe is linear, the structure is simple, and the processing difficulty and the processing cost can be reduced. The flow regulating structure comprises a branch pipe and a regulating piece, and the size of the cross section of the water inlet channel is changed by the axial movement of the regulating piece in the branch pipe, so that the flow is regulated. The flushing valve is matched with the branch pipe through the adjusting piece for movement, has a simple structure, realizes the adjusting function of flow, further reduces the processing difficulty of the flushing valve and saves the processing cost.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the structure of a flush valve of the present utility model;

FIG. 2 is a top view of the flush valve of the present utility model;

FIG. 3 is a cross-sectional view taken along A-A' of the flush valve of FIG. 2 in an open condition;

FIG. 4 is a cross-sectional view taken along A-A' of the flush valve of FIG. 2 in the closed position;

FIG. 5 is a cross-sectional view of the regulator member of the flush valve of FIG. 1;

fig. 6 is a cross-sectional view of the valve body and manifold of the flush valve of fig. 1.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				1	Flushing valve	21	Branch pipe
11	Water inlet pipe	211a	Through hole
				111a	Groove	22	Sealing sleeve
12	Water outlet pipe	23	Adjusting piece
				13	Filter cavity	231a	Rotary groove
131	Filter screen	232	Connecting part
				14a	Water inlet channel	233	Stop blockA part (C)
15a	Water outlet channel	24	Gland
				16	Electromagnetic valve	241	Limiting table
20	Flow regulating structure	25	Sealing ring

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. The meaning of "and/or", "and/or" as used throughout is intended to include three side-by-side schemes, for example "a and/or B", including a scheme, or B scheme, or a scheme where a and B meet at the same time. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model provides a flushing valve.

Referring to fig. 1 to 4, in an embodiment of the present utility model, a flush valve 1 includes a valve body and a flow rate adjusting structure 20, the valve body includes a water inlet pipe 11 and a water outlet pipe 12 which are communicated, and the water inlet pipe 11 is formed with a linear type water inlet channel 14a; the flow regulating structure 20 includes a branch pipe 21 and a regulating member 23, the branch pipe 21 is connected to one side of the water inlet pipe 11 and communicates with the water inlet passage 14a, and the regulating member 23 is provided in the branch pipe 21 and is reciprocally movable in an axial direction thereof with respect to the branch pipe 21 to regulate a size of a cross section of the water inlet passage 14a.

In this embodiment, the flush valve 1 can be used in toilet, hand sink, shower, etc., for flow control and on-off. The flush valve 1 comprises a valve body comprising a water inlet pipe 11 and a water outlet pipe 12, and a flow regulating structure 20, the flow regulating structure 20 being adapted to regulate the flow. The water inlet pipe 11 is used for connecting a water source, and a water inlet channel 14a is arranged in the water inlet pipe 11. The water outlet pipe 12 is communicated with the water inlet pipe 11, a water outlet of the water outlet pipe 12 is connected with a water outlet device such as a spray head, a shower head and the like, and a water outlet channel 15a communicated with the water inlet channel 14a is arranged in the water outlet pipe 12. The shape of the water inlet channel 14a is linear, the structural complexity is reduced by the linear channel, the processing cost is saved, meanwhile, the corners are fewer, the accumulation of scale, silt and the like in the water pipe is reduced, and the cleaning frequency is reduced.

The flow regulating structure 20 comprises a branch pipe 21 and a regulating piece 23, the branch pipe 21 and the water inlet pipe 11 can be integrally formed structures such as pouring, stamping and the like, the integral forming reduces assembly steps and the modulus opening quantity, and the processing cost is further reduced. The branch pipe 21 is communicated with the water inlet channel 14a of the water inlet pipe 11, and the adjusting piece 23 can be connected with the inside of the branch pipe 21 in a threaded fit, a clamping fit and the like. It will be appreciated that when the adjusting member 23 is connected by the screw-fit branch pipe 21, the outer periphery of the adjusting member 23 and the inner wall of the branch pipe 21 are provided with screw threads, and by rotating, the adjusting member 23 can be reciprocated in the axial direction of the branch pipe 21, so that one end of the adjusting member 23 is inserted into the water inlet passage 14a, and by continuing the rotation, the cross section of the water inlet passage 14a is gradually reduced, and the water inlet amount is gradually reduced. When the adjusting piece 23 is matched with the branch pipe 21 through the clamping connection, the structure is similar to a parking brake structure, the periphery of the adjusting piece 23 and the inner wall of the branch pipe 21 are provided with concave-convex alternate structures, the convex height of the periphery of the adjusting piece 23 can be changed through the concave-convex structures of the periphery of the adjusting piece 23 so as to be matched with concave positions clamped at different heights of the inner wall of the branch pipe 21, and the axial reciprocating motion of the adjusting piece 23 along the branch pipe 21 is realized, so that the adjusting piece 23 is inserted into the water inlet channel 14a. The flow of the water inlet channel 14a is regulated by matching the regulating piece 23 with the branch pipe 21, so that the matching is simple, other structures are not needed, and the processing cost is further reduced. The valve body and the regulating piece 23 of the branch pipe 21 can be made of metal materials such as aluminum alloy, copper and the like so as to improve the overall structural strength; and can also be polyvinyl chloride, polyethylene and other materials to reduce the overall weight and prevent rust.

From the above, the flush valve 1 has three states: in the first state, when the regulating member 23 is not inserted into the water inlet passage 14a, the water inlet pipe 11 is in a fully opened state, and the water flow rate is maximized. Second state: the bottom of the regulator 23 contacts the water inlet channel 14a, and the water inlet channel 14a is in a closed state. Third state: the adjusting member 23 is partially inserted into the water inlet channel 14a, and at this time, the position of the adjusting member 23 can be continuously controlled to change the size of the water inlet channel 14a, and at this time, the water inlet channel 14a is in a flow adjusting state, and can pass through part of water flow.

The valve body of the flush valve 1 also includes a filter chamber 13 and a solenoid valve 16. The filter chamber 13 is used for filtering impurities such as scale and silt in the water source. The filter chamber 13 is provided with two communication ports which are respectively communicated with the water inlet channel 14a and the water outlet channel 15a. Wherein the water inlet is arranged at a position close to the bottom of the filter cavity 13, the water outlet is arranged at a position far away from the bottom of the filter cavity 13, and a circle of filter screen 131 is covered at the position of the water outlet to filter the water source. The bottom of the filter cavity 13 is provided with a cavity for storing filtered impurities. The filter cavity 13 is arranged on the valve body, so that the water quality of the water outlet of the flushing valve 1 can be improved, and the use experience of a user is further improved. The electromagnetic valve 16 is arranged on one side of the water outlet pipe 12, the electromagnetic valve 16 can automatically adjust the water outlet amount of the water outlet pipe 12, a user can be automatically induced, the water outlet pipe 12 is closed when no person uses the water outlet pipe, and the waste of a water source is avoided.

According to the flushing valve 1 provided by the utility model, the water inlet channel 14a formed by the water inlet pipe 11 in the valve body is designed to be linear, so that the processing difficulty and the processing cost are reduced. The flow regulating structure 20 for regulating the flow comprises a branch pipe 21 and a regulating part 23, the regulating part 23 is connected with the branch pipe 21 and moves in a matched mode, the flow regulation and control are realized, the structure is simple, the processing difficulty of the flushing valve 1 is reduced, the problems that the flow regulating structure 20 and an internal water flow channel of the existing flushing valve 1 are complex, the die opening difficulty is large, and the processing cost is high are solved, and the product competitiveness is improved.

In an embodiment of the present utility model, as shown in fig. 3 and 4, a groove 111a is provided in a side wall of the water inlet channel 14a remote from the branch pipe 21, and one end of the adjusting member 23 is inserted into the groove 111a so that the water inlet channel 14a is in a closed state.

In the present embodiment, the groove 111a is provided on the side wall of the water inlet channel 14a away from the branch pipe 21, and the groove 111a is opposite to the communication port of the water inlet channel 14a and the branch pipe 21, so that the adjusting member 23 is more easily inserted into the groove 111a to close the water inlet channel 14a. The cross-sectional shape of the recess 111a is the same as the cross-sectional shape of the end of the regulating member 23 adjacent to the water inlet channel 14a. When it is desired to close the water inlet passage 14a, the regulating member 23 is inserted into the groove 111a, and the groove 111a is matched with the end of the regulating member 23 and seals the water inlet passage 14a. In the closed state of the water inlet channel 14a, the arrangement of the groove 111a can increase the path in the water flow direction, namely, the abutting surface of the groove 111a and the adjusting piece 23 in the axial direction is increased, the probability of water leakage is reduced, and the tightness of the adjusting piece 23 to the water inlet channel 14a is improved.

Referring to fig. 3-6, in an embodiment of the present utility model, a sealing sleeve 22 is sleeved on an end of the adjusting member 23 near the water inlet channel 14a, one end of the branch pipe 21 extends into the water inlet channel 14a, a through hole 211a is formed, and the sealing sleeve 22 is in interference fit with the through hole 211a.

In this embodiment, the sealing sleeve 22 has a certain elasticity, and optionally, the sealing sleeve 22 may be made of rubber, silica gel, or the like. Because the material of the adjusting member 23 is a rigid material such as metal or polyethylene, the sealing sleeve 22 is sleeved at one end of the adjusting member 23 close to the water inlet channel 14a, and the sealing sleeve 22 is in interference fit with the through hole 211a, so that the gap between the adjusting member 23 and the wall of the through hole 211a is reduced, moisture is prevented from entering the branch pipe 21, and the tightness of the flow adjusting structure 20 is improved. The cross-sectional shape of the through hole 211a is the same as that of the regulator 23 sleeved with the sealing sleeve 22, so that the sealing sleeve 22 is matched with the through hole 211a better. When the sealing sleeve 22 is in interference fit with the through hole 211a, the deformation of the sealing sleeve 22 after extrusion cannot be too large, so that the adjusting piece 23 sleeved with the sealing sleeve 22 cannot be subjected to excessive resistance when moving along the axial direction of the branch pipe 21, and the convenience in adjustment and the service life of the sealing sleeve 22 are improved.

Referring to fig. 4-5, in an embodiment of the present utility model, the sealing sleeve 22 extends to an end of one end of the adjusting member 23, and when the water inlet 14a is in a closed state, the sealing sleeve 22 abuts against a bottom of the groove 111 a.

In this embodiment, the sealing sleeve 22 extends to the end of the adjustment member 23 and contacts the end face of the adjustment member 23. When the water inlet channel 14a is in the closed state, the end surface of one end of the adjusting member 23 is abutted against the bottom of the groove 111a of the water inlet channel 14a, and the adjusting member 23 and the water inlet pipe 11 are made of rigid materials, so that the contact surface between the adjusting member 23 and the groove 111a is clearance due to the influence of processing errors and roughness, and the adjusting member 23 cannot completely seal the water inlet channel 14a. The sealing sleeve 22 extending to the end of the adjusting member 23 contacts with the surface of the groove 111a when the water inlet pipe 11 is closed, and is in interference fit with the groove 111a and the side wall of the water channel, so that the water inlet channel 14a is sealed, and the sealing sleeve 22 extending to the end of the adjusting member 23 improves the sealing performance of the adjusting member 23 to the water inlet channel 14a.

Referring to fig. 5 and 6, in an embodiment of the present utility model, the sealing sleeve 22 is made of rubber;

and/or the bottom of the groove 111a and the end of the sealing sleeve 22 are provided with chamfers.

Optionally, in this embodiment, the sealing sleeve 22 is made of rubber. The rubber has certain elasticity, and the rubber sleeve sleeved at one end of the adjusting piece 23 can well seal the adjusting piece 23 and the through hole 211a, and seal the adjusting piece 23 and the side wall of the water inlet channel 14a and the groove wall of the groove 111a, so that the sealing effect on the branch pipe 21 and the water inlet channel 14a is improved. In other embodiments, the sealing sleeve 22 may be made of silica gel.

In the case that the sealing sleeve 22 is made of rubber with or without limitation, a chamfer is formed between the bottom and the side wall of the groove 111a, and one end of the sealing sleeve 22, which is close to the water inlet channel 14a, is provided with a chamfer matched with the bottom of the groove 111 a. The chamfer design ensures that the sealing sleeve 22 has good contact effect with the corners of the bottom of the groove 111a, and further improves the sealing effect of the sealing sleeve 22 on the water inlet channel 14a.

Referring to fig. 3-5, in an embodiment of the present utility model, the adjusting member 23 is a screw, and a connecting portion 232 is convexly disposed at a middle portion of the screw, and the connecting portion 232 is in threaded connection with the branch pipe 21.

Alternatively, the adjusting member 23 may be a screw, a bolt. In this embodiment, the adjusting member 23 is a screw, a connecting portion 232 is convexly provided at the middle of the screw, threads are provided on the outer surface of the connecting portion 232 and the inner wall of the branch pipe 21, and the screw is in threaded connection with the branch pipe 21 through the connecting portion 232. The convenience of axial movement of the screw rod along the branch pipe 21 can be improved through threaded connection, and meanwhile, the thread machining process is mature, so that the machining cost can be further reduced. The sealing ring 25 is sleeved at one end of the screw close to the water inlet channel 14a, and the connecting part 232 is convexly arranged at the middle part of the screw, so that the cross section size of the middle part of the screw is larger than that of the two ends of the screw, and the screw sleeved with the sealing ring 25 can be inserted into the through hole 211a at one end of the branch pipe 21.

Referring to fig. 5, in an embodiment of the present utility model, the end of the screw facing the water inlet 14a is provided with a stop portion 233, and two ends of the sealing sleeve 22 respectively abut against the stop portion 233 and the connecting portion 232;

and/or the end surface of the screw rod far away from the water inlet channel 14a is provided with a rotary groove 231a.

In this embodiment, a circle of stop portion 233 is protruding from the end portion of the screw near the water inlet channel 14a, and the stop portion 233 is flush with the end surface of the screw. The stopper 233 forms a clamping groove together with the outer surface of the screw rod and the connecting part 232, the sealing sleeve 22 is sleeved in the clamping groove, and two ends of the sealing sleeve 22 respectively abut against the stopper 233 and the connecting part 232. The clamping groove plays a limiting role on the sealing sleeve 22, so that the sealing sleeve 22 can be prevented from sliding off the screw rod when the screw rod moves along the axial direction of the branch pipe 21, and the stability of the sealing sleeve 22 is improved.

In the case that the stop portion 233 is provided on the screw, or not, the screw is limited or not, the rotary groove 231a provided on the end surface of the screw far from the water inlet channel 14a can facilitate the reciprocating movement of the adjusting screw in the branch pipe 21, and the rotary groove 231a can be in a straight shape, or can be in a cross shape or a hexagon socket shape, so as to match with the existing common installation screw driver or tool, and the further limitation is omitted.

Referring to fig. 1 to fig. 4, in an embodiment of the present utility model, the flow adjusting structure 20 further includes a gland 24, where the gland 24 is screwed to an end of the branch pipe 21 far from the water inlet channel 14a and sleeved on an end of the screw, and when the water inlet channel 14a is in a fully opened state, the connecting portion 232 abuts against an end surface of the gland 24 located in the branch pipe 21;

in this embodiment, the flow regulating structure 20 further includes a gland 24, where the gland 24 is sleeved on an end of the screw remote from the water inlet channel 14a, and is in threaded connection with the branch pipe 21. Of course, in other embodiments, the branch pipe 21 may be engaged with a snap fit. The gland 24 matched with the branch pipe 21 plays a role in limiting the connecting part 232 of the screw rod, when the water inlet channel 14a is in a full-open state, one end of the connecting part 232 is abutted against the end face of the gland 24 positioned in the branch pipe 21, one end of the adjusting piece 23, which is far away from the gland 24, is retracted into the branch pipe 21, so that the screw rod is prevented from being unscrewed too much, the sealing sleeve 22 is separated from the through hole 211a, water is caused to enter the branch pipe 21, and water leakage occurs, and the sealing sleeve 22 is more inconvenient to screw into the through hole 211a again.

With continued reference to fig. 3 and 4, in an embodiment of the present utility model, a circle of limiting stand 241 is protruding from the outer surface of the gland 24, and the limiting stand 241 abuts against the end surface of the branch pipe 21;

and/or a sealing ring 25 is provided between the outer peripheral wall of the gland 24 and the inner wall of the branch pipe 21.

In this embodiment, a circle of limiting stand 241 is protruded on the outer surface of the gland 24 in the circumferential direction, so that when one end of the gland 24 is screwed into the branch pipe 21 for a certain distance, the limiting stand 241 abuts against the end surface of the branch pipe 21. The limiting table 241 is spaced from the end surface of the end of the gland 24 having the screw thread, which is designed according to the position of the connection portion 232 of the adjusting member 23. So as to achieve the following effects: when the adjusting member 23 moves along the axial direction of the branch pipe 21 in the direction away from the water inlet channel 14a, the end of the adjusting member 23 sleeved with the sealing sleeve 22 gradually gets away from the water inlet channel 14a, and when the connecting portion 232 of the adjusting member 23 moves to abut against the limiting table 241 of the gland 24, the water inlet channel 14a is in a fully opened state and the end of the sealing sleeve 22 is in the through hole 211a. The limiting table 241 can prompt the user that the water inlet channel 14a is completely opened to avoid excessive rotation, so that the sealing sleeve 22 of the adjusting member 23 is screwed out of the through hole 211a, which is inconvenient for screwing the sealing sleeve 22 into the through hole 211a again.

In the case that the limiting table 241 is provided on the outer surface of the limiting or non-limiting gland 24, a sealing ring 25 is provided between the outer peripheral wall of the gland 24 and the inner wall of the branch pipe 21, and the sealing ring 25 can seal the gap between the gland 24 and the branch pipe 21, so that the water in the water inlet pipe 11 is prevented from entering the branch pipe 21 and seeping out to the outside of the flushing valve 1. The sealing ring 25 may be made of rubber, plastic, etc., and has certain elasticity and wear resistance. The seal ring 25 is annular in shape, and the annular seal ring 25 is sleeved on the outer surface of the threaded portion of the gland 24. In this embodiment, the seal ring 25 is sleeved on the threaded surface of the gland 24 near the limiting table 241, so as to prevent the seal ring 25 from being excessively rubbed when the gland 24 is screwed into the branch pipe 21, thereby protecting the tightness of the seal ring 25. The gland 24 is provided with a circle of grooves matched with the sealing ring 25 at the position where the sealing ring 25 is sleeved, the depth of the grooves is smaller than the cross section size of the sealing ring 25, and the sealing ring 25 is arranged in the grooves and is abutted against the inner wall of the branch pipe 21. The groove plays a role in limiting the sealing ring 25, when the gland 24 is screwed into the branch pipe 21, the sealing ring 25 can be prevented from sliding relative to the gland 24, friction of the sealing ring 25 is reduced, and the tightness between the gland 24 and the branch pipe 21 is further improved.

As shown in connection with fig. 3-5, in one embodiment of the utility model, a sealing ring 25 is provided between the outer peripheral wall of the screw and the inner wall of the gland 24.

As can be seen from the above embodiments, the gland 24 is sleeved at one end of the screw far from the water inlet channel 14a, and the gland 24 abuts against the outer surface of the screw. In the present embodiment, a seal ring 25 is provided between the outer peripheral wall of the screw and the inner wall of the gland 24, and the seal ring 25 seals the gap between the gland 24 and the screw, preventing moisture of the water inlet pipe 11 from seeping out of the flush valve 1 from the branch pipe 21. The shape of the sealing ring 25 is annular, the sealing ring 25 is sleeved on the periphery of the screw rod, and one circle of sealing ring 25 can be arranged, and two circles of sealing ring can be arranged. In this embodiment, the sealing ring 25 has two rings, which are arranged on the outer peripheral wall of the screw at intervals, and the sealing between the screw and the gland 24 is further improved by providing two rings of sealing rings 25. The screw is provided with a groove matched with the sealing ring 25 at the position sleeved with the sealing ring 25, the depth of the groove is smaller than the size of the cross section of the sealing ring 25, and the sealing ring 25 is arranged in the groove and is abutted against the inner wall of the gland 24. The groove plays a limiting role on the sealing ring 25, when the screw rod is screwed out of the branch pipe 21, the sealing ring 25 is prevented from sliding relative to the screw rod, and the tightness between the gland 24 and the screw rod is improved.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (10)

1. A flush valve, the flush valve comprising:

the valve body comprises a water inlet pipe and a water outlet pipe which are communicated, and the water inlet pipe is provided with a linear water inlet channel; and

the flow regulating structure comprises a branch pipe and a regulating piece, wherein the branch pipe is connected to one side of the water inlet pipe and is communicated with the water inlet channel, and the regulating piece is arranged in the branch pipe and can reciprocate along the axial direction of the branch pipe relative to the branch pipe so as to regulate the size of the cross section of the water inlet channel.

2. The flush valve of claim 1, wherein a side wall of said inlet passage remote from said manifold is provided with a recess, and wherein an end of said regulator is inserted into said recess to place said inlet passage in a closed condition.

3. The flush valve of claim 2, wherein a sealing sleeve is sleeved on one end of the regulating member adjacent to the water inlet channel, one end of the branch pipe extends into the water inlet channel and is provided with a through hole, and the sealing sleeve is in interference fit with the through hole.

4. A flush valve as claimed in claim 3, wherein the sealing sleeve extends to an end of one end of the regulating member, the sealing sleeve abutting the bottom of the recess when the inlet passage is in a closed condition.

5. The flush valve of claim 4, wherein the sealing boot is rubber;

and/or the bottom of the groove and the end part of the sealing sleeve are provided with chamfers.

6. The flush valve of any one of claims 3-5, wherein the regulating member is a screw, and a connecting portion is convexly provided at a middle portion of the screw, and the connecting portion is screwed with the branch pipe.

7. The flush valve of claim 6, wherein said screw has a stop protruding toward an end of said water inlet passage, and wherein both ends of said sealing sleeve abut against said stop and said connecting portion, respectively;

and/or the end face of the screw far away from the water inlet channel is provided with a rotary groove.

8. The flush valve of claim 6, wherein the flow regulating structure further comprises a gland screwed to an end of the manifold remote from the water inlet passage and sleeved on an end of the screw, and wherein the connecting portion abuts against an end surface of the gland located in the manifold when the water inlet passage is in a fully opened state.

9. The flush valve of claim 8, wherein a ring of stop blocks are arranged on the outer surface of the gland in a protruding manner, and the stop blocks are propped against the end surfaces of the branch pipes;

and/or a sealing ring is arranged between the outer peripheral wall of the gland and the inner wall of the branch pipe.

10. The flush valve of claim 8, wherein a seal is provided between an outer peripheral wall of the screw and an inner wall of the gland.