CN216616108U - Valve and closestool adopting same - Google Patents

Abstract

The utility model discloses a valve and a closestool adopting the valve, the valve comprises a body, a sliding part and an elastic part, wherein the body is provided with a water passing channel, the sliding part is arranged on the body in a sliding way and is provided with a water passing cavity and a water passing hole communicated with the water passing cavity and the water passing channel, two ends of the elastic part are respectively abutted against the sliding part and the body, the sliding part is matched with the body to form a pressure cavity communicated with the water passing cavity, the sliding part is configured to be driven by pressure to move towards the water outlet section of the water passing channel when the water passing cavity enters water so as to enable the water passing hole to enter the water outlet section and reduce the water passing area between the water inlet section and the water outlet section of the water passing channel, and the elastic part is configured to be driven by the sliding part to be far away from the water outlet section so as to increase the water passing area between the water inlet section and the water outlet section when the water passing hole is decompressed. This closestool adopts this valve, utilizes this valve to reduce the characteristic of water flow in the use gradually for the rivers flow that spouts to the trap reduces gradually at the injection in-process, and the big just problem that lasts of noise when having solved the closestool bath.

Description

Valve and closestool adopting same

Technical Field

The utility model relates to the technical field of toilets, in particular to a valve and a toilet adopting the valve.

Background

In toilets that do not employ a tank to store water, a flow of water needs to be injected through the flush line into the trapway of the toilet to flush the waste into the siphon line. During the siphon effect of the siphon line, water in the trap is largely drawn into the siphon line, and the flush line is exposed to air and remains in a spray state, which continues to generate noise.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to overcome the above-mentioned drawbacks and problems of the prior art, and to provide a valve and a toilet using the same, wherein the toilet utilizes the characteristic of gradually reducing the flow rate of water during use, so that the flow rate of water sprayed to a trap is gradually reduced during spraying, thereby solving the problems of loud noise and continuous generation of noise during flushing.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a valve, comprising: the water purifier comprises a body, a water inlet pipe, a water outlet pipe and a water outlet pipe, wherein the body is provided with a water passing channel which comprises a water inlet section and a water outlet section; the sliding part is arranged on the body in a sliding manner, a water passing cavity is arranged in the sliding part, and a water passing hole for communicating the water passing cavity with the water passing channel is formed in the sliding part; the two ends of the elastic piece are respectively abutted against the sliding piece and the body; the sliding piece is matched with the body to form a pressure cavity communicated with the water passing cavity, and the sliding piece is suitable for being driven by pressure to move towards the water outlet section when the water inlet section supplies water to the water passing cavity and the pressure in the pressure cavity is increased so as to enable the water passing hole to enter the water outlet section and reduce the water passing area between the water inlet section and the water outlet section; the elastic piece is configured to be suitable for driving the sliding piece to be away from the water outlet section when the water inlet section stops supplying water to the water passing cavity and enables the water passing cavity to be decompressed so as to increase the water passing area between the water inlet section and the water outlet section.

Further, the end part of the sliding piece, which is far away from the water passing channel, extends into the pressure cavity and forms a pressure bearing surface for bearing pressure to drive the sliding piece to move; the pressure chamber is configured and adapted to increase the internal pressure thereof by accumulating air and/or receiving a water flow when the water passing chamber is filled with water and to drive the slide towards the water outlet section by air pressure and/or water pressure.

Further, the device also comprises an annular sealing membrane; the inner edge of the sealing membrane is fixedly connected with the sliding part, and the outer edge of the sealing membrane is fixedly connected with the body so as to be matched with the body and the sliding part to enclose the pressure cavity.

Furthermore, the sliding part is provided with a limiting flange; the stop flange is configured and adapted to engage in abutment with the body to move the pressure bearing face away from an opposing cavity wall of the pressure cavity.

Furthermore, the body is provided with a sliding cavity and a vent hole for communicating the sliding cavity with the outside; the elastic piece is sleeved on the sliding piece and is positioned in the sliding cavity.

Further, the sliding part comprises a sliding rod piece, a throttle bolt and a rod piece end head; the sliding rod piece is arranged in the sliding cavity in a sliding manner, and the water through cavity is arranged in the sliding rod piece; the throttle bolt is fixedly connected with the sliding rod piece, and a throttle hole for communicating the water through cavity and the pressure cavity is arranged on the throttle bolt; the end of the rod piece is fixedly connected with the sliding rod piece and is positioned in the water passing channel, and the water passing hole and the limiting flange are arranged on the end of the rod piece; the limiting flange is configured and suitable for abutting against the channel wall of the water passing channel so as to limit the sliding piece to move away from the water outlet section.

Furthermore, the throttling bolt and the sliding rod piece are matched to clamp the inner edge of the sealing membrane.

Furthermore, a water passing hole is formed between the water inlet section and the water outlet section of the water passing channel; the sliding piece is close to the water through hole when moving towards the water outlet section so as to reduce the water through area between the water inlet section and the water outlet section, and is far away from the water through hole when moving away from the water outlet section so as to increase the water through area between the water inlet section and the water outlet section.

Further, the body comprises a cover body, a seat body and a water passing body; the cover body is fixedly connected to the base body and is matched with the sliding part to form the pressure cavity; the seat body is provided with the sliding cavity and the vent hole; the water passing body is fixedly connected with the seat body and is provided with the water passing channel.

In addition, the utility model also provides a closestool, which comprises a closestool body, a control valve and a flushing pipe, wherein the closestool body is provided with a trap, and the closestool also comprises a valve as described in any one of the above items; one end of the control valve is communicated with external water inlet, and the other end of the control valve is communicated with a water inlet section of a water passing channel of the valve; one end of the flushing pipe is communicated with a water outlet section of the water passing channel of the valve, and the other end of the flushing pipe is provided with a jet orifice facing the trap.

As can be seen from the above description of the present invention, the present invention has the following advantages over the prior art:

1. a pressure cavity is arranged between the body and the sliding part, when the water channel of the body is filled with water, water flow enters the water through cavity through the limber hole on the sliding part, and extrudes air in the original water through cavity into the pressure cavity, or water is injected into the pressure cavity through the water through cavity, at the moment, the air pressure or the water pressure in the pressure cavity is increased, and a pushing force moving towards the water outlet section of the water channel is applied to the sliding part, the pushing force overcomes the elasticity of the elastic part, so that the water passing area of the water inlet section and the water outlet section of the water channel is reduced, the water outlet flow of the valve is also reduced, and under the pressure of the pressure cavity and the elasticity of the elastic part, the water outlet flow can be kept in a stable state with low flow, meanwhile, along with the sliding of the sliding part, the position of the limber hole on the sliding part can gradually move to the water outlet section, at the moment, the water inlet section stops feeding, and the limber hole is changed from water feeding into pressure release, the water flow in the pressure cavity or the water passing cavity can flow out, the air pressure or the water pressure in the pressure cavity is reduced due to the water flow, the pushing force on the sliding piece is reduced, the sliding piece can return to the original position under the action of the elastic piece, the water passing area between the water inlet section and the water outlet section of the water passing channel is increased again, and when water enters next time, the water outlet at the initial stage can keep larger flow; through this valve, can realize out rivers automatically that initial stage flow is big, the follow-up stage flow reduces, does not influence the play water flow when the play water after again.

2. The pressure-bearing face is arranged on the sliding piece, the pressure cavity can be used for accumulating air or receiving water flow, the pressure in the pressure cavity is increased, the increased air pressure or water pressure can apply force to the pressure-bearing face of the sliding piece, the sliding piece is pushed to slide, and the sliding piece can be enabled to be free from obstruction in resetting after pressure relief.

3. An annular sealing membrane is arranged to ensure the sealing of the pressure cavity.

4. The sliding part is provided with the limiting flange, and the limiting flange can be abutted to the body so as to prevent the pressure bearing face of the sliding part from abutting against one cavity wall of the pressure cavity to cause that the pressure bearing face cannot receive the force application of water pressure or air pressure in the pressure cavity.

5. Set up the slip chamber on the body, be convenient for installation slider and elastic component set up the air vent simultaneously for air in the slip chamber can be discharged through the air vent when the slider slides.

6. The sliding part comprises a sliding rod piece, a throttling bolt and a rod piece end head, and a throttling hole on the throttling bolt can be used for adjusting the flow of water entering the pressure cavity, so that the time required by the sliding process of the sliding part of the valve can be adjusted, and the applicability of the valve is further improved; the sliding rod piece and the rod piece end head are separated, so that the rod piece end head can be installed on the sliding rod after the sliding rod piece is installed in the sliding cavity, and the assembly is more convenient.

7. The throttle bolt can also be matched with the sliding rod piece to clamp the sealing film, so that the sealing performance of the pressure cavity is effectively ensured.

8. The water passing channel is provided with water passing holes, and the sliding part is close to or far away from the water passing holes to adjust the water passing area between the water inlet section and the water outlet section of the water passing channel.

9. The body comprises a cover body, a seat body and a water passing body, and the three parts are separated to facilitate the assembly of the valve.

10. In addition, the valve is adopted and arranged at the downstream of the control valve, so that the valve can work, when water is sent to the valve through the control valve, the jet orifice of the flushing pipe can jet water flow with larger flow at the beginning, but water is still stored in the trap at the moment, so that the water flow jet can not generate larger noise, and after the water in the trap is sucked into the siphon pipeline in the toilet body, the valve can control the water flow of the jet orifice to gradually reduce, so that the noise caused by the water flow jetted by the jet orifice is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is an exploded view of an embodiment of a valve according to the present invention;

FIG. 2 is a schematic cross-sectional view of the valve of FIG. 1;

FIG. 3 is a schematic cross-sectional view of an embodiment of a toilet provided by the present invention and an enlarged view of a valve therein in an initial state;

FIG. 4 is a schematic cross-sectional view of an embodiment of a toilet provided by the present invention and an enlarged view of the valve in the toilet in a sliding state;

fig. 5 is a schematic structural diagram of an embodiment of a toilet provided by the present invention.

Description of the main reference numbers:

a lid body 10; a fixing bolt 11; a sealing membrane 20; a pressure chamber 201; a slide lever 30; a water through cavity 301; the throttle bolt 31; an orifice 311; an elastic member 32; a rod end 33; a water passage hole 331; a position-limiting flange 332; a base body 40; a sliding chamber 401; a vent hole 41; a slider seal ring 42; a body seal ring 43; passing through a water body 50; a water passage 501; a water inlet section 502; a water outlet section 503; a water passing port 51; a toilet body 60; a water trap 61; a control valve 62; a siphon line 63; a flush spout 64; a flushing line 641; a valve 65; a wash ring nozzle 66; a washing pipe 661.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are presently preferred embodiments of the utility model and are not to be taken as an exclusion of other embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the claims, the specification and the drawings of the present invention, unless otherwise expressly limited, the terms "first", "second" or "third", etc. are used for distinguishing between different items and not for describing a particular sequence.

In the claims, the specification and the drawings of the present invention, unless otherwise expressly limited, all directional or positional relationships indicated by the terms "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," "counterclockwise," and the like are based on the directional or positional relationships indicated in the drawings and are used for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the device or element so indicated must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the present invention.

In the claims, the description and the drawings of the present application, unless otherwise expressly limited, the terms "fixedly connected" or "fixedly connected" should be interpreted broadly, that is, any connection between the two that does not have a relative rotational or translational relationship, that is, non-detachably fixed, integrally connected, and fixedly connected by other devices or elements.

In the claims, the specification and the drawings of the present invention, the terms "including", "having" and their variants, if used, are intended to be inclusive and not limiting.

Referring to fig. 5, fig. 5 shows a schematic structural diagram of an embodiment of a toilet provided by the present invention, which includes a toilet body 60, a control valve 62, a flush pipe 64, a flush pipe 641, a wash ring pipe 66, a wash ring pipe 661, and a valve 65.

The toilet body 60 is provided with a siphon line 63 and a trap 61.

The control valve 62 is installed on the toilet body 60, and has a water inlet and two water outlets, the water inlet is connected to external water inlet, the water inlet can be municipal tap water, the two water outlets are respectively connected to the valve 65 and the washing loop pipe 661, the outlet water of the two water outlets can be switched by the control valve 62, that is, the outlet water state is switched to stop outlet water, send water to the valve 65 or send water to the washing loop pipe 661.

The flushing nozzle 64 and the flushing pipeline 641 are combined together to form a flushing pipe, one end of the flushing pipe is communicated with the valve 65, the other end of the flushing pipe is provided with a jet orifice facing the trap 61, specifically, one end of the flushing pipeline 641 is communicated to the valve 65, the other end of the flushing pipeline 641 is communicated to the flushing nozzle 64, the flushing nozzle 64 is fixed on the toilet body 60, an opening for water outlet of the flushing nozzle faces the trap 61, and the opening of the flushing nozzle 64 forms the jet orifice of the flushing pipe. After the water flow enters the flush nozzle 64 through the control valve 62, the valve 65 and the flush pipe 641, the water flow is ejected from the opening of the flush nozzle 64 toward the trapway 61, so that the water in the trapway 61 enters the siphon pipe 63, the siphon pipe 63 sucks the water in the trapway 61 by the siphon effect, and the waste in the trapway 61 is discharged.

The toilet seat spout 66 and the toilet seat pipe 661 perform washing by jetting water to the toilet seat portion of the toilet body 60, and also perform a function of replenishing water to the trap 61.

Referring to fig. 1 and 2, the valve 65 mainly includes a body, a slider, a sealing diaphragm 20, an elastic member 32, and a plurality of sealing rings.

Wherein, the body comprises a cover body 10, a seat body 40, a water passing body 50 and a plurality of fixing bolts 11.

The middle position of the seat body 40 is provided with a cylindrical counter bore along the vertical direction, meanwhile, a through hole is arranged at the central position of the bottom wall of the cylindrical counter bore, and a vent hole 41 which penetrates to the outside is further arranged at the hole wall of the cylindrical counter bore.

The cover 10 is fastened to the top end of the seat 40 by a fixing bolt 11 and forms a cavity by cooperating with a cylindrical counter bore at the middle position of the seat 40.

The water passing body 50 is also locked at the bottom of the seat body 40 by the fixing bolt 11, and a water passing channel 501 is arranged in the water passing body, the water passing channel 501 is divided into a water inlet section 502 and a water outlet section 503, a water passing opening 51 is arranged at the middle position of the water inlet section 502 and the water outlet section 503, and water in the water inlet section 502 can enter the water outlet section 503 only through the water passing opening 51. A body sealing ring 43 is arranged between the water passing body 50 and the seat body 40 to ensure the sealing of the water passing channel 501 with the outside.

It should be noted that the axial direction of the water outlet 51 is consistent with the extending direction of the water outlet section 503, and the axis of the through hole at the central position of the seat body 40 is collinear with the axis of the water outlet 51.

The extending direction of the water outlet section 503 is referred to as the up-down direction.

The slider comprises a slide rod 30, a throttle bolt 31 and a rod end 33.

The inside water cavity 301 that leads to that is equipped with of slide bar 30, the upper and lower both ends of leading to water cavity 301 all have the opening, and its inner wall that is close to the upper end position is equipped with the internal thread, and here internal thread is used for with throttle bolt 31 spiro union fixed. The throttle bolt 31 is screwed and fixed at the top end position of the sliding rod piece 30, a throttle hole 311 is arranged on the throttle bolt, the throttle hole 311 is communicated with the water through cavity 301, and the top end surface of the throttle bolt also forms a pressure bearing surface. The rod end 33 is fixedly connected to the bottom end of the sliding rod 30, and a water through hole 331 is formed in the rod end, and the water through hole 331 is communicated with the water through cavity 301.

The slide rod 30 can be inserted into the through hole at the center of the seat body 40, and the bottom end thereof can be exposed from the bottom of the through hole to reach the water passing channel 501, the rod end 33 is fixedly connected to the slide rod 30 from the bottom position of the slide rod 30, and the water passing hole 331 communicates the water passing channel 501 and the water passing cavity 301. After the rod end 33 is fixed to the sliding rod 30, the top end periphery thereof forms a limit flange 332, the limit flange 332 can be abutted and matched with the body, specifically, the diameter of the limit flange 332 is larger than the aperture of the through hole on the seat body 40, so that the sliding member can not move any more after the limit flange 332 is abutted to the channel wall of the water passing channel 501.

The sliding rod 30 slides in the vertical direction relative to the body by means of insertion, a sliding element sealing ring 42 is arranged between the sliding rod 30 and the wall of the through hole of the seat body 40, and the sliding element sealing ring 42 is a Y-shaped sealing ring, which can ensure the sealing between the cavity formed by the matching of the cover body 10 and the seat body 40 and the water passing channel 501.

The sealing diaphragm 20 is of an annular structure, the inner edge of the sealing diaphragm is fixedly connected to the sliding member, the outer edge of the sealing diaphragm is fixedly connected to the body, so that the chamber formed by the cooperation of the cover 10 and the base 40 is divided into a pressure chamber 201 on the upper side and a sliding chamber 401 on the lower side, and the pressure chamber 201 and the sliding chamber 401 are sealed and isolated by the sealing diaphragm 20. Wherein the pressure chamber 201 is configured and adapted to increase its internal pressure by accumulating air and/or receiving a flow of water when the water passing chamber 301 is filled and to drive the slide towards the water outlet section 503 by means of air pressure and/or water pressure.

Here, the inner edge of the sealing membrane 20 is sleeved on the throttle bolt 31, so that the pressure chamber 201 can communicate with the water communicating chamber 301 and the pressure chamber 201 through the throttle hole 311, and the throttle bolt 31 is further engaged with the slide rod 30 to clamp the inner edge of the sealing membrane 20 to fix the sealing membrane 20 on the sliding member, the outer edge of the sealing membrane 20 is clamped by the cover body 10 and the seat body 40, so that the outer edge position of the sealing membrane 20 is fixed relative to the body, and at this time, the sealing membrane 20, the bottom wall surface of the cover body 10 and the pressure-bearing surface on the adjusting bolt 31 cooperate to form the pressure chamber 201. When the slider slides up and down, the sealing diaphragm 20 moves along with the sliding of the slider, thereby adjusting the volume of the pressure chamber 201.

Furthermore, it should be noted that the sealing isolation of the pressure chamber 201 and the sliding chamber 401 by the sealing membrane 20 is only one embodiment, and in other embodiments, the isolation of such chambers can be achieved by directly installing a sealing ring between the sliding rod 30 and the inner wall of the counterbore of the seat body 40, that is, the sliding member can directly cooperate with the body to form the pressure chamber 201 and the sliding chamber 401, and the end of the sliding member far from the water passage 501 extends into the end of the pressure chamber 201 to form the above-mentioned pressure-bearing surface for receiving pressure to drive the sliding member to move.

The elastic member 32 is a spring, which is installed in the sliding chamber 401, and both ends of which are respectively abutted against the sliding member and the body, and which applies an upward pushing force to the sliding member.

In addition, in this embodiment, the water inlet section 502 of the water passage 501 of the valve 65 is communicated with one of the water outlets of the control valve 62, and the water outlet section 503 thereof is communicated with the flush pipe 641.

In use, referring to fig. 3 and 4, the control valve 62 switches the outlet to the valve 65, and the flow of water enters the valve 65 from the inlet section 502 and flows to the outlet section 503. Referring to fig. 3, at this time, the valve 65 is in an initial state, the water flow in the water passage 501 enters the water passing cavity 301 through the water passing hole 331, at this time, if the pressure of the water flow itself is large, and a large water flow enters the water passing cavity 301 momentarily, the air in the water passing cavity 301 and the air in the pressure cavity 201 cannot escape, and the water flow presses the air in the water passing cavity 301 into the pressure cavity 201, so as to increase the air pressure of the pressure cavity 201, referring to fig. 4, at this time, the valve 65 is in a sliding state, the air pressure acts on the pressure bearing surface of the sliding member, so as to push the sliding member to overcome the elastic force of the elastic member 32 to move towards the water outlet section 503, i.e. push the sliding member to move downwards, during the downward movement of the sliding member, the limit flange 332 is firstly separated from the abutment with the body, and then the end 33 of the rod member gradually approaches the water outlet 51, so as to reduce the water passing area between the water inlet section 502 and the water outlet section 503, when the sliding part continues to move downwards, the water pressure at the water outlet section 503 is reduced due to the reduction of the water passing area, at this time, the sliding part is in a stable state under the action of the pressure chamber 201 and the elastic force of the elastic part 32, the water outlet flow of the valve is in a stable low flow state, then the water inlet of the water inlet section 502 is closed, at this time, the water passing chamber 301 is drained, the pressure in the pressure chamber 201 is reduced, the elastic force of the elastic part 32 is initially greater than the pressure of the pressure chamber 201, so that the sliding part is pushed to slide upwards, the rod end 33 of the sliding part is also made to be far away from the water passing opening 51, further, the water passing area between the water inlet section 502 and the water outlet section 503 is increased until the limiting flange on the rod end 33 abuts against the body, the sliding part reaches the initial position thereof, the limiting flange is arranged to avoid that the pressure bearing surface is too close to the bottom wall surface of the cover 10 in the pressure chamber 201, so that the pressure chamber 201 has a sufficient initial volume.

In addition, it should be noted that after a plurality of cycles of the valve, the air in the pressure chamber 201 will be taken away by the water flow, so that the water flow will fill the water through chamber 301 and the pressure chamber 201 during the subsequent use, and at this time, the pressure-bearing surface can also be forced by the water pressure to push the sliding member to slide downwards, and the working process of the valve can refer to the above-mentioned use process, and will not be described herein again.

When the valve 65 is installed in a toilet, when the toilet is flushed, water is firstly sent to the valve 65 through the control valve 62, the valve 65 is in an initial state at this time, the water passing area between the water inlet section 502 and the water outlet section 503 is the largest, so the water flow sprayed from the flushing nozzle 64 is also the largest, but at this time, water still exists in the trap 61, the flushing nozzle 64 sprays water under water, so large noise cannot be caused, after the water in the trap 61 is sucked by the siphon pipeline 63, the valve 65 enters a state of low-flow water outlet, because the impact force of the water sprayed from the flushing nozzle 64 is low, large noise cannot be generated, and after flushing is finished, the control valve 62 can close the water sending to the valve 65. At the next flush, the flush spout 64 may still initially deliver a large flow of water since the valve 65 returns to its initial condition.

It should be noted that the control valve 62 should be mounted on the water inlet end of the valve 65, and only then the valve 65 can be restored to the initial state by closing the control valve 62, i.e. the slide is away from the water gap 51, so that the flush nozzle 64 is initially sprayed with a large flow of water at the next use.

According to the valve 65 and the closestool adopting the valve 65, the characteristic that the water flow is gradually reduced in the using process of the valve 65 is utilized, so that the water flow sprayed to a trap is gradually reduced in the spraying process, and the problems of high noise and continuous noise generation during flushing of the closestool are solved.

The description of the above specification and examples is intended to be illustrative of the scope of the present invention and is not intended to be limiting. Modifications, equivalents and other improvements which may occur to those skilled in the art and which may be made to the embodiments of the utility model or portions thereof through a reasonable analysis, inference or limited experimentation, in light of the common general knowledge, the common general knowledge in the art and/or the prior art, are intended to be within the scope of the utility model.

Claims (10)

1. A valve, comprising:

the water purifier comprises a body, a water inlet pipe, a water outlet pipe and a water outlet pipe, wherein the body is provided with a water passing channel which comprises a water inlet section and a water outlet section;

the sliding part is arranged on the body in a sliding manner, a water passing cavity is arranged in the sliding part, and a water passing hole for communicating the water passing cavity with the water passing channel is formed in the sliding part; and

the two ends of the elastic piece are respectively abutted against the sliding piece and the body;

the sliding piece is matched with the body to form a pressure cavity communicated with the water passing cavity, and the sliding piece is suitable for being driven by pressure to move towards the water outlet section when the water inlet section supplies water to the water passing cavity and the pressure in the pressure cavity is increased so as to enable the water passing hole to enter the water outlet section and reduce the water passing area between the water inlet section and the water outlet section;

the elastic piece is configured to be suitable for driving the sliding piece to be away from the water outlet section when the water inlet section stops supplying water to the water passing cavity and enables the water passing cavity to be decompressed so as to increase the water passing area between the water inlet section and the water outlet section.

2. The valve of claim 1 wherein the end of said slider remote from said water passage extends into said pressure chamber and forms a pressure bearing surface for receiving pressure to drive movement of said slider; the pressure chamber is configured to increase the internal pressure thereof by accumulating air and/or receiving water flow when the water passing chamber is filled with water and drive the slide member to move towards the water outlet section by air pressure and/or water pressure.

3. The valve of claim 2, further comprising an annular sealing diaphragm; the inner edge of the sealing membrane is fixedly connected with the sliding part, and the outer edge of the sealing membrane is fixedly connected with the body so as to be matched with the body and the sliding part to enclose the pressure cavity.

4. A valve as claimed in claim 3, wherein the slider is provided with a stop flange; the stop flange is configured and adapted to engage in abutment with the body to move the pressure bearing face away from an opposing cavity wall of the pressure cavity.

5. The valve according to claim 4, wherein the body is provided with a sliding cavity and a vent hole for communicating the sliding cavity with the outside; the elastic piece is sleeved on the sliding piece and is positioned in the sliding cavity.

6. The valve of claim 5, wherein said slider includes a sliding rod, a throttle bolt, and a rod end; the sliding rod piece is arranged in the sliding cavity in a sliding manner, and the water through cavity is arranged in the sliding rod piece; the throttle bolt is fixedly connected with the sliding rod piece, and a throttle hole for communicating the water through cavity and the pressure cavity is arranged on the throttle bolt; the end of the rod piece is fixedly connected with the sliding rod piece and is positioned in the water passing channel, and the water passing hole and the limiting flange are arranged on the end of the rod piece; the limiting flange is configured and suitable for abutting against the channel wall of the water passing channel so as to limit the sliding piece to move away from the water outlet section.

7. The valve of claim 6 wherein said throttle bolt cooperates with said slide member to hold said inner edge of said sealing diaphragm.

8. The valve of claim 1, wherein said water passage defines a water passage opening between said water inlet section and said water outlet section; the sliding part is close to the water through hole when moving towards the water outlet section so as to reduce the water through area between the water inlet section and the water outlet section, and is far away from the water through hole when moving away from the water outlet section so as to increase the water through area between the water inlet section and the water outlet section.

9. The valve of claim 5, wherein the body comprises a cover, a seat, and a body of water; the cover body is fixedly connected to the base body and is matched with the sliding part to form the pressure cavity; the seat body is provided with the sliding cavity and the vent hole;

the water passing body is fixedly connected with the seat body and is provided with the water passing channel.

10. A toilet comprising a toilet body, a control valve, a flush line, said toilet body having a trap, and further comprising a valve as claimed in any one of claims 1 to 9;

one end of the control valve is communicated with external water inlet, and the other end of the control valve is communicated with a water inlet section of a water passing channel of the valve;

one end of the flushing pipe is communicated with a water outlet section of the water passing channel of the valve, and the other end of the flushing pipe is provided with a jet orifice facing the trap.

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