CN219176992U

CN219176992U - Flushing valve

Info

Publication number: CN219176992U
Application number: CN202320165105.7U
Authority: CN
Inventors: 胡世才; 胡咏涛; 陈安龙; 彭振华
Original assignee: Guangdong Hengyao Technology Development Co ltd
Current assignee: Guangdong Hengyao Technology Development Co ltd
Priority date: 2023-01-19
Filing date: 2023-01-19
Publication date: 2023-06-13
Anticipated expiration: 2033-01-19

Abstract

The utility model discloses a flushing valve, which comprises a valve body, a sealing film, an elastic piece and a control assembly, wherein the valve body is provided with a water outlet flow passage, a movable cavity, a water discharge passage and a water inlet; the water outlet end of the water discharge channel is communicated with a water outlet flow channel; the sealing film is arranged in the movable cavity and separates the movable cavity into a first cavity and a second cavity, a communication hole which is communicated with the first cavity and the second cavity is arranged on the sealing film, the second cavity is communicated with the water inlet, and the water inlet end of the water outlet flow channel extends to the second cavity; the elastic piece is arranged in the movable cavity and is used for providing elastic force for keeping the sealing film closed at the water inlet end of the water outlet flow channel; the control assembly is connected to the valve body and used for controlling communication or separation between the water discharge channel and the first chamber. The flushing valve can effectively improve the water outlet flow and the water outlet pressure so as to improve the flushing effect.

Description

Flushing valve

Technical Field

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

Background

The flushing valve is a valve structure for controlling the water outlet effect. With the continuous progress of society, the automation demand of product is higher and higher, to the structure of flushing, in order to improve the degree of automation of flushing, set up controlling means such as solenoid valve and be used as the switch of control flushing, when carrying out the flushing control through the solenoid valve, the solenoid valve is the direct connection and acts on the bath runner, be limited to the size of solenoid valve, need set up the runner of small-size for the solenoid valve and realize the control of flushing, when rivers carry out the bath after these small-size runners, the problem that the bath flow is little, the bath pressure is not enough can appear, the flushing effect is not good.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a flushing valve which can effectively improve the water outlet flow and the water outlet pressure so as to improve the flushing effect.

The flushing valve comprises a valve body, a sealing film, an elastic piece and a control assembly, wherein the valve body is provided with a water outlet flow passage, a movable cavity, a water discharge passage and a water inlet; the water outlet end of the water discharge channel is communicated with a water outlet flow channel; the sealing film is arranged in the movable cavity and separates the movable cavity into a first cavity and a second cavity, a communication hole which is communicated with the first cavity and the second cavity is arranged on the sealing film, the second cavity is communicated with the water inlet, and the water inlet end of the water outlet flow channel extends to the second cavity; the elastic piece is arranged in the movable cavity and is used for providing elastic force for keeping the sealing film closed at the water inlet end of the water outlet flow channel; the control assembly is connected to the valve body and used for controlling communication or separation between the water discharge channel and the first chamber.

The flushing valve provided by the embodiment of the utility model has at least the following beneficial effects:

when the flushing valve of the embodiment works, water flow can enter the valve body through the water inlet and then enter the first chamber through the second chamber and the communication hole, and under the condition that the control assembly is in a state of controlling the partition between the water discharge channel and the first chamber, the water flow in the first chamber cannot flow out of the first chamber through the water discharge channel, so that the sealing film cannot be pushed by the water pressure in the second chamber, and the sealing film can keep a state of closing the water inlet end of the water discharge channel under the action of the elastic force of the elastic piece, namely, the valve body is kept to be closed; when the control assembly is in communication with the first chamber, the water flow in the first chamber can flow out of the first chamber through the water discharge channel, so that the sealing film can move to one side far away from the water outlet channel by overcoming the elastic force of the elastic piece under the pushing of the water pressure in the second chamber, thereby opening the water inlet end of the water outlet channel, and enabling the water flow in the valve body to flow out of the valve body through the second chamber and the water outlet channel in sequence, namely keeping the valve body in an open state; therefore, the control component for controlling the flushing valve switch in the embodiment works by controlling the first cavity to be communicated with or cut off from the water discharge channel, and is not required to be arranged on the main flow channel (namely the flow channel formed by the water inlet, the second cavity and the water outlet flow channel) in the valve body, so that the influence of the control component on the size of the water flow channel can be effectively reduced, and the water outlet flow rate and the water outlet pressure can be effectively improved to improve the flushing effect.

According to the flushing valve disclosed by the embodiment of the utility model, the valve body is provided with the control cavity, the control cavity is communicated with the first cavity, the water inlet end of the water discharge channel is communicated with the control cavity, the control assembly comprises a driving part and an opening and closing part, the opening and closing part is at least partially positioned in the control cavity, and the driving part is connected with the opening and closing part and is used for driving the opening and closing part to block or open the communication port between the water discharge channel and the control cavity.

According to some embodiments of the utility model, the sealing membrane comprises a membrane and a membrane frame, wherein the membrane frame is connected to the middle part of the membrane, the edge of the membrane is connected to the valve body, and one end of the elastic piece is abutted to the membrane frame.

According to the flushing valve of some embodiments of the present utility model, the membrane skeleton includes a main body and a clamping portion, the clamping portion is disposed on one side of the main body facing the water outlet flow channel, the clamping portion includes a connecting section and a limiting section, the diameter of the limiting section is larger than that of the connecting section, a connecting hole matched with the connecting section is disposed on the membrane, and the limiting section and the main body are respectively abutted to two opposite side surfaces of the membrane.

According to the flushing valve of some embodiments of the present utility model, the clamping portion includes a first clamping portion and a second clamping portion, the second clamping portion is disposed in the middle of the main body, the first clamping portion is disposed at the edge of the main body, the second clamping portion is larger than the first clamping portion in size, and the second clamping portion is inserted into the water outlet flow channel.

According to some embodiments of the utility model, the communication hole is disposed on one of the first clamping portions.

According to some embodiments of the utility model, the elastic member is a compression spring, and one end of the compression spring facing away from the sealing membrane is provided with a guide rod extending to a side close to the sealing membrane and penetrating the communication hole.

According to some embodiments of the utility model, the valve body comprises an upper valve body and a lower valve body, the movable cavity is formed between the upper valve body and the lower valve body, the upper valve body is provided with a compression ring, the lower valve body is provided with a compression boss, and the edge of the diaphragm is compressed between the compression ring and the compression boss.

According to the flushing valve of some embodiments of the present utility model, a plurality of movable chambers and water outlet flow passages are provided, and the valve body is provided with a water inlet flow passage which is communicated with the water inlet and each second chamber.

The flushing valve according to some embodiments of the utility model further comprises a water pump assembly, wherein the water outlet end of the water pump assembly is communicated with the water inlet of the valve body.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic perspective view of a flush valve according to one embodiment of the present utility model;

FIG. 2 is a schematic perspective view of the flush valve shown in FIG. 1 with the water pump assembly removed;

FIG. 3 is a top view of the flush valve shown in FIG. 1;

FIG. 4 is a cross-sectional view taken along the direction A-A shown in FIG. 3;

FIG. 5 is a cross-sectional view in the direction B-B shown in FIG. 3;

FIG. 6 is a top view of the connection structure of the elastic member and the sealing film shown in FIG. 4;

fig. 7 is a cross-sectional view in the direction C-C shown in fig. 6.

Reference numerals:

a valve body 10; a water outlet flow passage 130; a movable chamber 140; a first chamber 141; a second chamber 142; a drain passage 150; a water inlet 160; a water inlet flow passage 170; a control chamber 180; a drain hole 181; an upper valve body 110; a clamp ring 111; a lower valve body 120; crimping boss 121; seal groove 122; a sealing film 20; a diaphragm 210; a seal ring structure 211; a membrane backbone 220; a main body 221; an annular flange 222; an arc-shaped limit projection 223; a clamping part 224; a connection section 2241; a limit section 2242; a communicating hole 2243; an elastic member 30; a guide bar 310; a control assembly 40; a driving member 410; an opening and closing member 420; a water pump assembly 50;

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the direction or positional relationship indicated with respect to the description of the orientation, such as up, down, left, right, front, rear, etc., is based on the direction or positional relationship shown in the drawings, is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, the description of the first and second is only for the purpose of distinguishing technical features, and should not be construed as indicating or implying relative importance or implying the number of technical features indicated or the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

The following describes a flush valve according to an embodiment of the present utility model with reference to fig. 1 to 7, and the flush valve is also called a flush valve, which is a valve structure for controlling the water outlet effect; the flushing valve of the embodiment is a direct-flushing valve and is used for being directly connected to a water pipeline of a user, so that the setting of a water tank can be saved.

Referring to fig. 1 to 7, the flush valve of the present embodiment includes a valve body 10, a sealing film 20, an elastic member 30 and a control assembly 40, wherein the valve body 10 is provided with a water outlet flow passage 130, a movable chamber 140, a water discharge passage 150 and a water inlet 160, the movable chamber 140 is communicated with the water inlet 160 and with the water outlet flow passage 130, and a water outlet end of the water discharge passage 150 is communicated with the water outlet flow passage 130; the sealing film 20 is an important part for realizing the opening and closing of the flushing valve, the sealing film 20 is arranged in the movable cavity 140, and the movable cavity 140 is divided into a first chamber 141 and a second chamber 142; the water inlet 160 is communicated with the second chamber 142, the water inlet end of the water outlet flow channel 130 extends to the second chamber 142, and the sealing film 20 is provided with a communication hole 2243 for communicating the first chamber 141 and the second chamber 142, so that water flow can enter the second chamber 142 through the water inlet 160 and then enter the first chamber 141 through the communication hole 2243; the elastic member 30 is disposed in the movable cavity 140 and is used for providing an elastic force for keeping the sealing film 20 closed to the water inlet end of the water outlet channel 130, so that the sealing film 20 can be driven to move towards one end far away from the water outlet channel 130 after overcoming the elastic force of the elastic member 30, thereby opening the water inlet end of the water outlet channel 130, and further enabling the second chamber 142 to be communicated with the water outlet channel 130; the control assembly 40 is connected to the valve body 10 and is used for controlling the communication or separation between the water discharge channel 150 and the first chamber 141, when the water discharge channel 150 is communicated with the first chamber 141, water flow in the first chamber 141 can flow to the water outlet channel 130 through the water discharge channel 150, so that the pressure of the first chamber 141 can be relieved, and the sealing membrane 20 can overcome the elastic force of the elastic member 30 under the pushing of the water pressure in the second chamber 142 and move to a side far away from the water outlet channel 130.

When the flushing valve of the present embodiment works, water flow can enter the valve body 10 through the water inlet 160 and then enter the first chamber 141 through the second chamber 142 and the communication hole 2243, and when the control assembly 40 is in a state of controlling the partition between the water discharge channel 150 and the first chamber 141, since the water flow in the first chamber 141 cannot flow out of the first chamber 141 through the water discharge channel 150, the sealing film 20 cannot be pushed by the water pressure in the second chamber 142, so that the sealing film 20 can keep a state of closing the water inlet end of the water discharge channel 130 under the elastic force of the elastic member 30, that is, keep the valve body 10 closed; when the control assembly 40 is in communication with the first chamber 141 by controlling the water drain passage 150, the water flow in the first chamber 141 can flow out of the first chamber 141 through the water drain passage 150, so that the sealing membrane 20 will move to a side far away from the water outlet passage 130 against the elastic force of the elastic member 30 under the pushing of the water pressure in the second chamber 142, thereby opening the water inlet end of the water outlet passage 130, so that the water flow in the valve body 10 can flow out of the valve body 10 through the second chamber 142 and the water outlet passage 130 in turn, i.e. the opened state of the valve body 10 is maintained; therefore, since the control module 40 for controlling the flushing valve switch in the present embodiment is operated by controlling the first chamber 141 to communicate with or block the water discharge channel 150, the control module is not required to be disposed on the main flow channel (i.e. the flow channel formed by the water inlet 160, the second chamber 142 and the water outlet flow channel 130) in the valve body 10, and thus the influence of the control module 40 on the size of the water flow channel can be effectively reduced, and the water flow rate and the water outlet pressure can be effectively increased, so as to improve the flushing effect.

It will be appreciated that, in order to facilitate the control of the control assembly 40 to control the communication or blocking between the drain channel 150 and the first chamber 141, in some embodiments, referring to fig. 4 and 5, the valve body 10 is provided with a control chamber 180, the control chamber 180 is communicated with the first chamber 141, the water inlet end of the drain channel 150 is communicated with the control chamber 180, the control assembly 40 includes a driving member 410 and an opening and closing member 420, the opening and closing member 420 is at least partially located in the control chamber 180, and the driving member 410 is connected with the opening and closing member 420 and is used for driving the opening and closing member 420 to be close to or far away from the water inlet end of the drain channel 150, so as to seal or open the communication port between the drain channel 150 and the control chamber 180. It will be appreciated that referring to fig. 4 and 5, specifically, the driving member 410 may be a linear driving device such as an electric push rod or a linear motor, the opening and closing member 420 may be a plugging member such as a piston plug, and the electric push rod or the linear motor is fixedly connected to the valve body 10, one end of the piston plug is connected to the driving end of the electric push rod, and the other end of the piston plug extends into the control cavity 180. And, specifically, in order to facilitate the communication between the control chamber 180 and the first chamber 141, the control chamber 180 is disposed on one side of the first chamber 141 away from the water outlet flow channel 130, and a plurality of water discharge holes 181 are disposed on a chamber wall between the first chamber 141 and the control chamber 180, so that when the control assembly 40 controls the water discharge channel 150 to communicate with the control chamber 180, water flow in the first chamber 141 can flow to the water outlet flow channel 130 through the water discharge holes 181, the control chamber 180 and the water discharge channel 150, and pressure relief of the first chamber 141 is further realized.

It will be appreciated that, in order to make the sealing membrane 20 have a certain rigidity so as to be connected with the elastic member 30, in some embodiments, referring to fig. 5, 6 and 7, the sealing membrane 20 includes a membrane 210 and a membrane frame 220, an edge of the membrane 210 is connected with the valve body 10, the membrane 210 is made of a flexible material, so that the sealing or opening of the water inlet end of the water outlet channel 130 can be realized by elastic deformation of the membrane 210 while the edge of the membrane 210 is connected with the valve body 10 to realize fixation; the membrane frame 220 is connected to the middle of the membrane 210, one end of the elastic member 30 is abutted to the membrane frame 220, and the other end of the elastic member 30 is abutted to the valve body 10, so that the elastic force of the elastic member 30 is applied to the membrane frame 220, and the membrane frame 220 transmits the elastic force to the membrane 210, so that the membrane 210 can keep abutting with the water inlet end of the water outlet flow channel 130, and the water inlet end of the water outlet flow channel 130 is closed.

It will be appreciated that, in order to achieve the connection and fixation between the membrane frame 220 and the membrane 210 in some embodiments, referring to fig. 7, the membrane frame 220 includes a main body 221 and a clamping portion 224, the clamping portion 224 is disposed on a side of the main body 221 facing the water outlet channel 130, the clamping portion 224 includes a connection section 2241 and a limiting section 2242, and the diameter of the limiting section 2242 is larger than that of the connection section 2241, so that an annular clamping groove is formed between the limiting section 2242 and the main body 221, a connection hole matched with the connection section 2241 is formed on the membrane 210, the hole wall of the connection hole is clamped into the annular clamping groove, and the limiting section 2242 and the main body 221 are respectively abutted against two opposite side surfaces of the membrane 210, so that the relative movement between the membrane 210 and the membrane frame 220 along the axial direction of the connection hole is limited, and the relative movement in the radial direction of the connection hole is also limited. Also, it should be appreciated that the stop segment 2242 is provided with a guide bevel to allow the stop segment 2242 to better pass through the attachment hole when the diaphragm 210 and the membrane frame 220 are assembled.

It can be appreciated that, based on the above embodiments, referring to fig. 7, specifically, according to the different setting positions, the clamping portion 224 is divided into a first clamping portion and a second clamping portion, where the second clamping portion is disposed in the middle of the main body 221, the first clamping portion is disposed at the edge of the main body 221, and the first clamping portion is provided with a plurality of first clamping portions distributed in an annular array around the second clamping portion, so as to improve the reliability of the connection between the membrane skeleton 220 and the membrane 210; the second clamping portion is larger than the first clamping portion, and is inserted into the water outlet channel 130, so that the movement of the sealing film 20 can be guided by the second clamping portion. Meanwhile, referring to fig. 7, specifically, the communication hole 2243 may be selectively provided at one of the first clamping portions.

It will be appreciated that in some embodiments, referring to fig. 4 to 7, the elastic member 30 is a compression spring, and the compression spring is disposed in the first chamber 141, one end of the compression spring abuts against a side of the membrane frame 220 facing away from the membrane 210, and the other end of the compression spring abuts against the valve body 10. Of course, it should be understood that in other embodiments, other types of elastic elements such as elastic sheets or tension springs may be used for the elastic member 30, and thus the elastic member 30 is not limited in particular herein; for example, when the elastic member 30 is an extension spring, the extension spring may be selectively disposed in the second chamber 142, and one end of the extension spring is connected to a side of the sealing film 20 near the water outlet flow channel 130, and the other end of the extension spring is connected to a cavity wall of the second chamber 142.

It will be appreciated that in some embodiments, referring to fig. 7, the end of the compression spring facing away from the sealing membrane 20 and the water inlet flow passage 170 is provided with a guide rod 310, and the guide rod 310 extends to a side close to the sealing membrane 20 and the water inlet flow passage 170 and is arranged through the communication hole 2243, so that the compression spring can be limited by the cooperation of the communication hole 2243 and the guide rod 310, so as to avoid that the compression spring moves in the first chamber 141 to affect the normal operation of the flushing valve. Referring to fig. 7, specifically, the membrane skeleton 220 further includes an annular flange 222 disposed on a side of the main body 221 facing away from the membrane 210, and a plurality of arc-shaped limiting protrusions 223, wherein the annular flange 222 is disposed at an edge of the main body 221, the plurality of arc-shaped limiting protrusions 223 are disposed in a middle portion of the main body 221 and located on the same circumferential line, and one end of the compression spring is sleeved between the arc-shaped limiting protrusions 223 and the annular flange 222.

It will be appreciated that to facilitate the formation of the valve body 10, in some of these embodiments, referring to fig. 4 and 5, the valve body 10 includes an upper valve body 110 and a lower valve body 120, and the movable chamber 140 is formed between the upper valve body 110 and the lower valve body 120, the upper valve body 110 includes a compression ring 111 extending into the movable chamber 140, the lower valve body 120 is provided with a compression boss 121 on a chamber wall of the movable chamber 140, and an edge of the diaphragm 210 is compressed between the compression ring 111 and the compression boss 121, so that a first chamber 141 is formed between the diaphragm 210 and the upper valve body 110, and a second chamber 142 is formed between the diaphragm 210 and the lower valve body 120. In order to improve the sealing effect, referring to fig. 4 and 5, a seal ring structure 211 is formed at the edge of the diaphragm 210, and a seal groove 122 is provided on the pressure welding boss 121, and the seal ring structure 211 is fitted into the seal groove 122. Meanwhile, referring to fig. 4, in order to facilitate communication of the control chamber 180 with the first chamber 141, the control chamber 180 is formed on the upper valve body 110.

It can be appreciated that in some embodiments, the movable chambers 140 and the water outlet channels 130 are provided in plurality, and the sealing film 20, the elastic member 30, the corresponding control assembly 40, etc. are provided for each movable chamber 140, the valve body 10 is provided with the water inlet channels 170, and the water inlet channels 170 are communicated with the water inlet 160 and each second chamber 142, so that when the flushing valve is connected to the waterway of the user, the flushing valve can flush the positions with flushing demands respectively. For example, referring to fig. 4, in one embodiment, two movable chambers 140 and two water outlet channels 130 are provided, the two movable chambers 140 and the two water outlet channels 130 are respectively located at the left side and the right side of the valve body 10, the sealing film 20, the elastic member 30, the control assembly 40 and the like are respectively provided with two groups of left and right, the water inlet channels 170 extend along the left and right directions, two ends of the water inlet channels are respectively communicated with the two second chambers 142, and the middle parts of the water inlet channels 170 are respectively communicated with the water inlets 160, so that water can be simultaneously supplied to the water outlet channels 130 at the left side and the right side through the water inlets 160, and water can be respectively flushed to two different positions with flushing requirements.

It will be appreciated that in some of these embodiments, referring to fig. 1, the flush valve further includes a water pump assembly 50, the water outlet end of the water pump assembly 50 being in communication with the water inlet 160 of the valve body 10 to further increase the flush pressure and improve the flush effect.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A flush valve, comprising:

the valve body (10) is provided with a water outlet flow passage (130), a movable cavity (140), a water discharge passage (150) and a water inlet (160); the water outlet end of the water discharge channel (150) is communicated with the water outlet flow channel (130);

the sealing film (20) is arranged in the movable cavity (140) and separates the movable cavity (140) to form a first cavity (141) and a second cavity (142), a communication hole (2243) which is used for communicating the first cavity (141) with the second cavity (142) is formed in the sealing film (20), the second cavity (142) is communicated with the water inlet (160), and the water inlet end of the water outlet flow channel (130) extends to the second cavity (142);

an elastic member (30) disposed in the movable chamber (140) and configured to provide an elastic force for keeping the sealing membrane (20) closed at the water inlet end of the water outlet flow channel (130);

and a control assembly (40) connected to the valve body (10) and used for controlling the communication or the separation between the water discharge channel (150) and the first chamber (141).

2. A flush valve according to claim 1, wherein the valve body (10) is provided with a control chamber (180), the control chamber (180) is communicated with the first chamber (141), the water inlet end of the water discharge channel (150) is communicated with the control chamber (180), the control assembly (40) comprises a driving member (410) and an opening and closing member (420), the opening and closing member (420) is at least partially positioned in the control chamber (180), and the driving member (410) is connected with the opening and closing member (420) and is used for driving the opening and closing member (420) to block or open a communication port between the water discharge channel (150) and the control chamber (180).

3. The flush valve according to claim 1, wherein the sealing membrane (20) comprises a membrane (210) and a membrane frame (220), the membrane frame (220) is connected to the middle part of the membrane (210), the edge of the membrane (210) is connected to the valve body (10), and one end of the elastic member (30) is abutted to the membrane frame (220).

4. A flush valve according to claim 3, wherein the membrane frame (220) comprises a main body (221) and a clamping portion (224), the clamping portion (224) is disposed on one side of the main body (221) facing the water outlet flow channel (130), the clamping portion (224) comprises a connecting section (2241) and a limiting section (2242), the diameter of the limiting section (2242) is larger than that of the connecting section (2241), a connecting hole matched with the connecting section (2241) is formed in the membrane (210), and the limiting section (2242) and the main body (221) are respectively abutted against two opposite side surfaces of the membrane (210).

5. The flush valve of claim 4, wherein the clamping portion (224) is divided into a first clamping portion and a second clamping portion, the second clamping portion is disposed in a middle portion of the main body (221), the first clamping portion is disposed at an edge of the main body (221), a size of the second clamping portion is larger than a size of the first clamping portion, and the second clamping portion is inserted into the water outlet flow channel (130).

6. The flush valve according to claim 5, wherein the communication hole (2243) is provided in one of the first engaging portions.

7. A flushing valve according to claim 6, characterized in that the elastic member (30) is a compression spring, one end of the compression spring facing away from the sealing membrane (20) is provided with a guide rod (310), and the guide rod (310) extends to a side close to the sealing membrane (20) and penetrates the communication hole (2243).

8. A flushing valve according to claim 3, characterized in that the valve body (10) comprises an upper valve body (110) and a lower valve body (120), the movable cavity (140) is formed between the upper valve body (110) and the lower valve body (120), the upper valve body (110) is provided with a compression ring (111), the lower valve body (120) is provided with a compression boss (121), and the edge of the diaphragm (210) is compressed between the compression ring (111) and the compression boss (121).

9. A flush valve according to any one of claims 1 to 8, wherein a plurality of movable chambers (140) and water outlet channels (130) are provided, the valve body (10) being provided with water inlet channels (170), the water inlet channels (170) being in communication with the water inlet (160) and the respective second chamber (142).

10. A flush valve according to any one of claims 1 to 8, further comprising a water pump assembly (50), the water outlet end of the water pump assembly (50) being in communication with the water inlet (160) of the valve body (10).