CN212657284U - Mechanical water leakage protection valve - Google Patents

Abstract

The utility model provides a machinery protection valve that leaks, valve body have water inlet, intake antrum, play water cavity and middle delivery port, even have the valve gap of three-way type on the valve body, the cooperation has the expanding drum to lift up and the elastic diaphragm that collapses down on the intake antrum of valve body and the disk seat of play between the water cavity, is equipped with the diaphragm plate on the elastic diaphragm, forms the backpressure chamber between diaphragm plate and the valve gap, install piston shutoff piece in the passageway of valve gap, piston shutoff piece links through the cavity with three-way type, backpressure chamber and separates for two cavitys that do not communicate, be equipped with on the diaphragm plate and be used for communicating backpressure chamber, go out the water cavity centre bore, one side of diaphragm plate is equipped with the side way branch that has the side hole, and the chamber and the intake antrum are pressed back in the intercommunication to the cooperation can be leaned on with the counterbalance of diaphragm plate to the shutoff centre bore. The water leakage protection valve can avoid the continuous water leakage phenomenon of the water using appliance, and the discharged water at the water outlet of the valve body is treated by the water using appliance, so that the treatment effect of the water using appliance is ensured.

Description

Mechanical water leakage protection valve

[ technical field ] A method for producing a semiconductor device

The utility model relates to a technical field of valve, especially a machinery protection valve that leaks.

[ background of the invention ]

Water appliances such as water purifiers, water heaters and the like produced by current manufacturers are generally directly connected with a tap water pipe network when being installed and used, and even if a water inlet valve is generally configured, the valve is generally in a normally open state. The pressure of the mains water pipe network is applied directly to the various components of the internal flow path of the water-using appliance. When a certain device, especially a device with large water flow capacity, is in quick opening or closing of a water flow passage, the pressure of the tap water pipe network changes, pressure shock waves are generated in the pipe network, the shock waves are propagated in the pipe network to cause resonance, and a sudden sound is given, namely a water hammer phenomenon. The pressure in the pipe network is changed greatly when water hammer occurs, and the pressure can reach several times or even more than ten times of the normal pressure of the tap water pipe network when the pressure is increased. Therefore, water hammer has great destructive power to tap water pipe network and connected equipment.

Water consumption appliances such as a water purifier, a water heater and the like connected to a tap water pipe network are easily damaged when water hammer occurs, such as water leakage and the like, because the water consumption appliances are directly communicated with the pipe network pressure. Even if water hammer does not occur, water leakage from these water appliances can occur. Because these appliances are directly connected with the running water pipe network, the configured water inlet valve is also in a normally open state, when water leakage occurs in the water using appliances, water in the pipe network can continuously leak from the water using appliances, if the water leakage is not timely treated, a large amount of water leakage is generated, waste is caused, and water trouble is caused.

In order to solve the above problems, chinese patent application No. CN201210212068.7 proposes a water leakage protection valve, in which a diaphragm is used to automatically close a valve seat, so that pressure waves caused by water hammer from other devices in a tap water network can be blocked, thereby preventing the water hammer from damaging a water-using appliance. The principle is as follows: when the terminal valve is closed, the diaphragm can block the passage of the water inlet cavity and the water outlet cavity to prevent tap water from entering the water using appliance. If the water using appliance leaks water, the water pressure in the water using appliance is smaller than the water pressure of the middle water outlet and the water outlet, the one-way valve is closed, the running water is prevented from flowing back to the water using appliance, and the pressure in the back pressure cavity is prevented from being released through the water leakage of the water using appliance, so that the state that the running water is prevented from entering the water using appliance by the diaphragm closed valve seat is maintained, and the phenomenon that continuous water leakage is not caused under the condition that the water using appliance (such as a water purifier, a water heater and the like). However, when the valve body provided in the above patent is used, some water flows into the three-way through cavity through the side through hole, and directly joins with the water flow entering from the middle water inlet without being treated by the water appliances (such as water purifier, water heater, etc.), so that the water flow discharged from the water outlet is mixed with the water flow which is not treated by the water appliances, thereby affecting the treatment effect of the water appliances.

[ Utility model ] content

The utility model aims at solving the problem among the prior art, provide a machinery protection valve that leaks, can effectively avoid the water utensil to continuously leak the phenomenon to the drainage of this valve body delivery port all handles through the water utensil, thereby guarantees the treatment effect of water utensil.

In order to achieve the purpose, the utility model provides a mechanical water leakage protection valve, the valve body has water inlet, intake antrum, goes out the water cavity and middle delivery port, even there is the valve gap of tee bend type on the valve body, the cooperation has the elastic diaphragm that can expand and bulge to lift and collapse down on the intake antrum of valve body and the disk seat that goes out between the water cavity, valve gap one end is the open end, and this open end and valve body cooperation have tee bend type through chamber, middle water inlet and delivery port in the valve gap, middle water inlet department is equipped with check valve, and this check valve is one-way open to the delivery port from middle water inlet, be equipped with the diaphragm plate on the elastic diaphragm, form the backpressure chamber between diaphragm plate and the valve gap, valve gap and valve body complex one end have the passageway that links to each other with the open end, install the piston shutoff piece that can move about its inside in the passageway, the piston shutoff piece passes through tee bend type through chamber, The back pressure cavity is divided into two cavities which are not communicated, a central branch with a central hole is arranged on the diaphragm plate, the central hole is used for communicating the back pressure cavity with the water outlet cavity, a first through hole for the central branch to penetrate out is formed in the center of the elastic diaphragm, the end part of the central branch penetrates through the elastic diaphragm and extends into the inner cavity of the valve seat, a side channel branch with a side hole is arranged on one side of the diaphragm plate, the side channel branch penetrates through the side through hole and is communicated with the back pressure cavity and the water inlet cavity through the side hole, and one end, facing the back pressure cavity, of the piston plugging piece can be abutted against and matched with the central branch of the diaphragm plate so as to plug the central hole.

Preferably, the area of the end surface of the piston plugging piece facing to one end of the back pressure cavity is smaller than that of the end surface of the piston plugging piece facing to the other end of the back pressure cavity.

Preferably, the cross-sectional area at the smallest cross-section of the central hole is larger than the cross-sectional area at the smallest cross-section of the side holes.

Preferably, a spring is disposed on the diaphragm plate.

Preferably, the piston plugging piece comprises a first piston rod body, a large diaphragm and a small diaphragm, the area of the large diaphragm is larger than that of the small diaphragm, the small diaphragm is installed at one end, close to the diaphragm plate, of the first piston rod body, the large diaphragm is installed at the other end of the first piston rod body, and a sealing body used for plugging the central hole extends from one side, facing the diaphragm plate, of the small diaphragm.

Preferably, the valve cover comprises a base, an intermediate connector and an upper cover, the upper cover is of a three-way structure, a middle water inlet and a middle water outlet are formed in two ends of the upper cover, a third end of the upper cover is connected with the base through the intermediate connector, the base is installed on the valve body, the large diaphragm is installed between the intermediate connector and the upper cover, and the small diaphragm is installed between the base and the intermediate connector.

Preferably, the end of the base facing the valve body is provided with a first flange, the first flange presses against the outer edge of the elastic diaphragm, the first flange and the elastic diaphragm are in sealing fit, the end of the intermediate connecting body facing the upper cover is provided with a second flange, the second flange presses against the outer edge of the large diaphragm, the first flange and the second flange are in sealing fit, the other end of the intermediate connecting body is provided with a third flange, and the third flange presses against the outer edge of the small diaphragm, and the third flange and the small diaphragm are in sealing fit.

Preferably, the piston plugging piece comprises a second piston rod body and a piston cap, a first V-shaped sealing ring tightly matched with the inner wall of the channel is installed on the outer wall of the second piston rod body, the piston cap used for plugging the center hole is installed on one end, facing the diaphragm plate, of the second piston rod body, the other end of the second piston rod body is provided with a large-diameter end, and a second V-shaped sealing ring tightly matched with the inner wall of the channel is installed on the outer wall of the large-diameter end.

The utility model has the advantages that: the valve of the utility model is connected with a protected water appliance. When the terminal water outlet valve (such as a water tap) of the protected water appliance is opened (when a user uses water), the pressure of the three-way through cavity is released due to the opening of the terminal valve, the pressure in the channel is smaller than the pressure in the back pressure cavity, the piston plugging piece is lifted upwards to open the central hole, the back pressure cavity releases the pressure, the pressure of the water inlet cavity is larger than the pressure of the back pressure cavity, the elastic diaphragm is lifted upwards, the valve seat is opened, at the moment, most tap water in the water inlet cavity directly enters the water outlet cavity from the valve seat, and a small part of tap water enters the back pressure cavity from the side hole, then enters the water outlet cavity from the central hole to be converged with the tap water directly entering the valve seat, and then the converged tap water enters the protected water appliance through; because the water pressure in the water ware of being protected is greater than the water pressure of terminal valve delivery port, the utility model provides a check valve department opens the form, and the water in the water ware of being protected is just followed the utility model discloses a middle water inlet flows, and the rethread delivery port flows from the terminal valve, and the running water that can guarantee the water inlet can all get into the water ware through middle delivery port and handle. When the terminal valve is closed, the pressure of the inner cavity of the channel is greater than the pressure of the back pressure cavity, the piston plugging piece presses downwards to block the passage between the back pressure cavity and the water outlet cavity, tap water enters the back pressure cavity through the water inlet cavity and the side holes of the diaphragm plate, the pressure in the back pressure cavity rises until the pressure is greater than the pressure of the water outlet cavity, and the diaphragm is pressed down to close the valve seat to block the passage between the water inlet cavity and the water outlet cavity.

The utility model connects the water-consuming appliance to the tap water pipe network. When other equipment that are close to on the pipe network are opened floodgate and are released water, the utility model discloses pressure in the water utensil that connects can loop through the other hole on middle water inlet, backpressure chamber and the diaphragm plate and release the water pipe network, and the water utensil that uses is proportional with pipe network pressure. When other adjacent water equipment valve closing on the pipe network, pipe network pressure rises, and pressure transmits to the backpressure chamber through elastic diaphragm's side through-hole, the utility model provides a check valve just closes, and the pressure in the water utensil is used in the protection can not rise thereupon, guarantees that the water utensil does not receive the high pressure to influence.

When the terminal valve is closed, the elastic diaphragm of the utility model can block the access of the water inlet cavity and the water outlet cavity, and prevent the tap water from entering the water-using appliance. If water leakage of water appliance, because the water pressure in the water appliance is less than the utility model discloses a water pressure of middle delivery port and delivery port, the utility model provides a check valve closes, prevent the running water from flowing back to the water appliance, guarantee that the tee bend type link up intracavity pressure and can not release through leaking of water appliance, the pressure of passageway inner chamber is greater than the pressure in backpressure chamber, the piston shutoff piece presses down, block the passageway in backpressure chamber and play water cavity, prevent the running water in backpressure chamber to get into the water appliance, simultaneously, the running water passes through the intake antrum, the side hole of diaphragm board gets into the backpressure chamber, backpressure intracavity pressure rises, when being greater than the pressure in play water cavity, the diaphragm is pressed and is sealed the disk seat, block the passageway in intake antrum and play water cavity, keep the closed disk seat of elasticity diaphragm to prevent the running water to get into this kind of state of water appliance, thereby guarantee the water, Water heater, etc.) does not occur, the phenomenon that continuous water leakage is not stopped does not occur.

The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.

[ description of the drawings ]

Fig. 1 is a schematic cross-sectional view of embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of embodiment 1 of the present invention;

fig. 3 is a schematic cross-sectional view of embodiment 2 of the present invention;

fig. 4 is a schematic structural view of embodiment 2 of the present invention.

[ detailed description ] embodiments

Example 1

Referring to fig. 1 and 2, the mechanical water leakage protection valve of the present invention, a valve body 1 has a water inlet 101, a water inlet cavity 1010, a water outlet cavity 1020 and a middle water outlet 102, the valve body 1 is connected with a three-way type valve cover 2, an elastic diaphragm 3 capable of expanding and bulging and collapsing is matched on a valve seat 103 between the water inlet cavity 1010 and the water outlet cavity 1020 of the valve body 1, one end of the valve cover 2 is an open end, the open end is matched with the valve body 1, a three-way type through cavity 203, a middle water inlet 201 and a water outlet 202 are arranged in the valve cover 2, a one-way valve 6 is arranged at the middle water inlet 201, the one-way valve 6 is opened from the middle water inlet 201 to the water outlet 202, a diaphragm plate 4 is arranged on the elastic diaphragm 3, a back pressure cavity 104 is formed between the diaphragm plate 4 and the valve cover 2, a channel 2031 connected with the open end of the valve cover 2 and the valve body 1 is arranged at the matched end of the valve body, the piston plugging piece 5 divides the three-way through cavity 203 and the back pressure cavity 104 into two cavities which are not communicated, a central branch with a central hole 41 is arranged on the diaphragm plate 4, the central hole 41 is used for communicating the back pressure cavity 104 and the water outlet cavity 1020, a first through hole for the central branch to penetrate through is arranged at the center of the elastic diaphragm 3, the end part of the central branch penetrates through the elastic diaphragm 3 and extends into the inner cavity of the valve seat 103, a bypass branch with a bypass hole 42 is arranged at one side of the diaphragm plate 4, the bypass branch penetrates through the side through hole and is communicated with the back pressure cavity 104 and the water inlet cavity 1010 through the bypass hole 42, and one end, facing the back pressure cavity 104, of the piston plugging piece 5 can abut against and cooperate with the central branch of the diaphragm plate 4 to plug the central hole 41.

Further, the area of the end face of the piston plug 5 facing the back pressure chamber 104 is smaller than the area of the end face of the other end thereof. When the terminal valve is closed, the pressure of the inner cavity of the channel is kept to be larger than the pressure of the back pressure cavity, and the piston plugging piece can be pressed downwards to block the passage between the back pressure cavity and the water outlet cavity.

Further, the cross-sectional area of the minimum cross-section of the central hole 41 is larger than that of the minimum cross-section of the side hole 42, so that tap water entering the back pressure cavity from the side hole 42 can be discharged into the water outlet cavity from the central hole in time.

Further, the diaphragm plate 4 is provided with a spring 40, so that the diaphragm 3 can more reliably close the valve seat 103 to block water from entering.

Further, piston shutoff piece 5 includes second piston body of rod 54 and piston cap 55, and the first V word sealing washer 541 of closely cooperating mutually with passageway 2031 inner wall is installed to the outer wall of second piston body of rod 54, the piston cap 55 that is used for shutoff centre bore 41 is installed towards the one end of diaphragm plate 4 to second piston body of rod 54, and the other end of second piston body of rod 54 has big footpath end 540, the second V word sealing washer 542 of closely cooperating mutually with passageway 2031 inner wall is installed to the outer wall of big footpath end 540, can guarantee the gas tightness of connecting through setting up two V word sealing washers, avoids the running water in the backpressure chamber to enter into the tee bend type through the chamber.

Example 2

Participating in fig. 3 and 4, the difference from embodiment 1 is that: the piston plugging piece 5 comprises a first piston rod body 51, a large diaphragm 52 and a small diaphragm 53, the area of the large diaphragm 52 is larger than that of the small diaphragm 53, the small diaphragm 53 is installed at one end, close to the diaphragm plate 4, of the first piston rod body 51, the large diaphragm 52 is installed at the other end of the first piston rod body 51, the sealing body 531 used for plugging the central hole 41 extends towards one side of the diaphragm plate 4 of the small diaphragm 53, and the sealing body can be in sealing fit with the diaphragm plate.

Further, the valve cap 2 comprises a base 21, an intermediate connector 22 and an upper cover 23, the upper cover 23 is of a three-way structure, a middle water inlet 201 and a middle water outlet 202 are arranged at two ends of the upper cover 23, a third end of the upper cover 23 is connected with the base 21 through the intermediate connector 22, the base 21 is installed on the valve body 1, the large diaphragm 52 is installed between the intermediate connector 22 and the upper cover 23, and the small diaphragm 53 is installed between the base 21 and the intermediate connector 22. Specifically, a first flange is arranged at one end of the base 21 facing the valve body 1, the first flange presses against the outer edge of the elastic diaphragm 3, the first flange and the elastic diaphragm are in sealing fit, a second flange is arranged at one end of the intermediate connecting body 22 facing the upper cover 23, the second flange presses against the outer edge of the large diaphragm 52, the first flange and the second flange are in sealing fit, a third flange is arranged at the other end of the intermediate connecting body 22, and the third flange presses against the outer edge of the small diaphragm 53, and the third flange and the small diaphragm are in sealing fit. Through setting up a plurality of flange structures, can guarantee the leakproofness that diaphragm and valve body or valve gap are connected.

The utility model discloses the working process:

the utility model discloses a valve body: the water inlet is connected with a tap water pipe network, the middle water outlet is connected with the water inlet end of the water using appliance, the water outlet end of the water using appliance is connected with the middle water inlet, and the water outlet is connected with the terminal valve.

When the terminal valve (such as a faucet) is opened, because the pressure in the three-way through cavity 203 is released by the terminal valve, the pressure in the channel 2031 is smaller than the pressure in the back pressure cavity 104, the piston plugging piece 5 is lifted upwards, the central hole 41 is opened, the back pressure cavity 104 releases the pressure, the pressure in the back pressure cavity 104 is smaller than the pressure in the water inlet cavity 1010, and the elastic diaphragm 3 is lifted away from the valve seat 103; one part of tap water directly enters the water outlet cavity from the valve seat, and the other part of the tap water sequentially enters the water outlet cavity from the side hole and the back pressure cavity and finally enters the water using appliance from the middle water inlet. When the terminal valve is opened for water, the one-way valve 6 is opened in one way, and the treated water (purified, heated, etc.) flows out from the terminal valve.

When the terminal valve is closed, the pressure in the three-way through cavity 203 cannot be released by water leakage of the water using appliance, and because the area of the end face of the piston plugging piece 5 facing one end of the back pressure cavity 104 is smaller than that of the end face of the other end of the back pressure cavity 104, the pressure in the inner cavity of the channel 2031 is ensured to be larger than that of the back pressure cavity 104, the piston plugging piece 5 is pressed downwards to block a passage between the back pressure cavity 104 and the water outlet cavity 1020, and tap water in the back pressure cavity 104 is prevented from entering the water using appliance. Meanwhile, tap water enters the back pressure cavity 104 through the water inlet cavity 101 and the side hole 42 of the diaphragm plate 4, the back pressure cavity 104 is communicated with a tap water pipe network, the pressure in the back pressure cavity 104 rises to be equal to the tap water pipe network, the pressure is higher than the pressure of the water outlet cavity 1020, the elastic diaphragm 3 is pressed against the valve seat 103, the passage of the water inlet cavity 1010 and the water outlet cavity 1020 is blocked, and water supply for water appliances is stopped. If the water leakage accident appears in the water apparatus, because the water pressure in the water apparatus is less than the utility model discloses a backpressure chamber 104 and the tee bend type run through the water pressure in the chamber 203, the check valve of middle delivery port 201 department is in one-way closed state, prevents the running water to flow back to the water apparatus, and guarantee that the pressure in the passageway 2031 can not released, thereby guarantee the closed centre bore 41 of piston shutoff piece 5, the closed disk seat 103 of elastic diaphragm 3, maintain the water apparatus and intake and block the state, can not appear continuously leaking the phenomenon more than when guaranteeing the water apparatus to leak.

The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.

Claims (8)

1. The utility model provides a machinery protection valve that leaks, valve body (1) have water inlet (101), intake antrum (1010), go out water cavity (1020) and middle delivery port (102), even have valve gap (2) of tee bend type on valve body (1), the cooperation has the elastic diaphragm (3) that can expand and bulge and lift and collapse down on intake antrum (1010) of valve body (1) and play disk seat (103) between water cavity (1020), valve gap (2) one end is the open end, and this open end cooperates with valve body (1), has tee bend type through chamber (203), middle water inlet (201) and delivery port (202) in valve gap (2), middle water inlet (201) department is equipped with check valve (6), and this check valve (6) are opened to delivery port (202) one-way from middle water inlet (201), its characterized in that: the elastic diaphragm (3) is provided with a diaphragm plate (4), a back pressure cavity (104) is formed between the diaphragm plate (4) and the valve cover (2), one end of the valve cover (2) matched with the valve body (1) is provided with a channel (2031) connected with an open end, a piston plugging piece (5) capable of moving in the channel (2031) is installed, the piston plugging piece (5) divides the three-way through cavity (203) and the back pressure cavity (104) into two non-communicated cavities, the diaphragm plate (4) is provided with a central branch with a central hole (41), the central hole (41) is used for communicating the back pressure cavity (104) and a water outlet cavity (1020), the center of the elastic diaphragm (3) is provided with a first through hole for the central branch to penetrate out, the end part of the central branch penetrates through the elastic diaphragm (3) to extend into the inner cavity of the valve seat (103), one side of the diaphragm plate (4) is provided with a side channel branch with a side hole (42), the bypass branch penetrates through the side through hole and is communicated with the back pressure cavity (104) and the water inlet cavity (1010) through a bypass hole (42), and one end, facing the back pressure cavity (104), of the piston plugging piece (5) can be abutted and matched with the center branch of the diaphragm plate (4) to plug the center hole (41).

2. A mechanical water leak protection valve as claimed in claim 1, wherein: the area of the end face of the piston plug (5) facing the back pressure chamber (104) is smaller than the area of the end face of the other end of the piston plug.

3. A mechanical water leak protection valve as claimed in claim 1, wherein: the cross-sectional area of the central hole (41) at the smallest cross-section is larger than the cross-sectional area of the side hole (42) at the smallest cross-section.

4. A mechanical water leak protection valve as claimed in claim 1, wherein: and a spring (40) is arranged on the diaphragm plate (4).

5. A mechanical water leakage protection valve according to any of claims 1 to 4, wherein: piston shutoff piece (5) include first piston body of rod (51), large diaphragm (52) and little diaphragm (53), the area of large diaphragm (52) is greater than the area of little diaphragm (53), the one end that first piston body of rod (51) is close to diaphragm plate (4) is installed little diaphragm (53), large diaphragm (52) are installed to the other end of first piston body of rod (51), little diaphragm (53) extend towards one side of diaphragm plate (4) have seal (531) for shutoff centre bore (41).

6. A mechanical water leakage protection valve according to claim 5, wherein: valve gap (2) include base (21), intermediate junction body (22) and upper cover (23), upper cover (23) are three-way type structure, and the both ends of upper cover (23) are equipped with middle water inlet (201) and delivery port (202), and the third end of upper cover (23) passes through intermediate junction body (22) and links to each other with base (21), base (21) are installed on valve body (1), big diaphragm (52) are installed between intermediate junction body (22) and upper cover (23), install between base (21) and intermediate junction body (22) little diaphragm (53).

7. A mechanical water leak protection valve as claimed in claim 6, wherein: the one end of base (21) towards valve body (1) is equipped with first flange, the outer fringe of elastic diaphragm (3) is pressed to first flange, and both are sealed cooperation mutually, intermediate junction body (22) are equipped with the second flange towards the one end of upper cover (23), and the outer fringe of big diaphragm (52) is pressed to the second flange, and both are sealed cooperation mutually, the other end of intermediate junction body (22) is equipped with the third flange, the outer fringe of little diaphragm (53) is pressed to the third flange, and both are sealed cooperation mutually.

8. A mechanical water leakage protection valve according to any of claims 1 to 4, wherein: piston shutoff piece (5) include the second piston body of rod (54) and piston cap (55), and the outer wall of the second piston body of rod (54) is installed and is closely cooperated first V word sealing washer (541) mutually with passageway (2031) inner wall, the piston cap (55) that are used for shutoff centre bore (41) are installed towards the one end of diaphragm plate (4) to the second piston body of rod (54), and the other end of the second piston body of rod (54) has big footpath end (540), second V word sealing washer (542) closely cooperated mutually with passageway (2031) inner wall is installed to the outer wall of big footpath end (540).

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