CN218377820U - Stable pressure retaining valve - Google Patents

Abstract

The utility model discloses a stable pressure retaining valve, including the valve body that is equipped with the cavity, the cavity even has inlet channel and outlet conduit respectively, be equipped with overflow valve subassembly in the cavity, overflow valve subassembly is connected with overflow pipe, overflow valve subassembly includes overflow valve core and overflow valve cover, overflow valve core tip be equipped with overflow valve cover keeps the first sealed end of sealed, the cover is equipped with first piece that resets on the overflow valve core, be equipped with slidable pressure retaining valve subassembly in the outlet conduit, the pressure retaining valve subassembly remove to the junction of outlet conduit and cavity with the outlet conduit inner wall forms sealedly, be equipped with the pressure release passageway of intercommunication outlet conduit and cavity in the pressure retaining valve subassembly, install the check valve in the pressure release passageway, the valve body is connected with switch module, overflow valve core mobility control opening and stopping of switch module, this pressure retaining valve plays the effect of pressurize when can realizing the pressure release after the shut down of rifle.

Description

Stable pressure retaining valve

[ technical field ] A method for producing a semiconductor device

The utility model relates to a stable pressure retaining valve belongs to pressure retaining valve technical field.

[ background of the invention ]

The high-pressure cleaning machine is a commonly used garden tool, and the switch need be opened at the cleaning machine during operation, grips the high-pressure gun stock, and some machines on the market still can operate when the rifle is closed, leads to the waste of the energy, and some machines can close the rifle and shut down, but still are in high-pressure state in the machine, and light person causes cleaning machine function failure easily, and heavy person can lead to the high-pressure rifle to explode and split, endangers user's personal safety.

[ Utility model ] A method for manufacturing a semiconductor device

The utility model aims to solve the technical problem that a stable pressure retaining valve is provided, this pressure retaining valve plays the effect of pressurize when can realizing the pressure release after shutting down the rifle.

Solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides a stable pressure retaining valve, includes the valve body that is equipped with the cavity, the cavity even has inlet channel and outlet conduit respectively, and outlet conduit's exit linkage has high-pressure rifle, be equipped with overflow valve subassembly in the cavity, overflow valve subassembly is connected with overflow pipeline, overflow valve subassembly includes overflow valve core and overflow valve cover, overflow valve core tip be equipped with overflow valve cover keeps the first sealed end of sealed, the cover is equipped with first piece that resets on the overflow valve core, be equipped with slidable pressure retaining valve subassembly in the outlet conduit, the pressure retaining valve subassembly move to the junction of outlet conduit and cavity with the outlet conduit inner wall forms sealedly, be equipped with the pressure release passageway of intercommunication outlet conduit and cavity in the pressure retaining valve subassembly, install the check valve in the pressure release passageway, the valve body is connected with the switch module, overflow valve core mobility control opening and stopping of switch module.

Adopt the beneficial effects of the utility model are that:

the utility model discloses in outlet conduit's delivery port is connected with the high-pressure rifle, when the high-pressure rifle is closed, outlet conduit's delivery port is closed, this moment overflow valve core place cavity internal pressure sharply rises, is greater than when water pressure first reset after the power that the piece provided, overflow valve core promoted to overflow valve barrel removes, overflow valve core removes the in-process first sealed end with overflow valve barrel removes sealedly, the rivers of overflow valve core department are to overflow valve barrel, finally follow overflow channel flows, this moment water pressure in the cavity reduces, the utility model discloses close the rifle after the inside water pressure of cavity all is less than the water pressure of its during operation far away, reduces the burden that the high pressure water produced the valve body, can prolong by a wide margin the life of valve body reduces the material requirement to the valve body, also can avoid simultaneously the valve body explodes because of the high pressure water and splits, reduces the use risk, improves user's safety in utilization.

In addition, work as outlet conduit with when the pressure difference between the cavity is great, the water of outlet conduit department passes through check valve flow direction cavity in the pressure release passageway to reduce the water pressure of outlet conduit department works as when the pressure difference between outlet conduit and the cavity is less, the pressurize can't be realized after the check valve to the rivers of outlet conduit department, the utility model discloses can reduce after closing the rifle water pressure in the outlet conduit, also can keep the partial water pressure of outlet conduit department, provide water pressure for next time the rifle of opening, make the high-pressure rifle just can possess great water pressure in the twinkling of an eye of opening the rifle, consumption that can the energy can be saved.

Secondly, in the utility model discloses in when the high pressure rifle is closed, the overflow case removes under hydraulic effect, makes switch module close, realizes auto-stop's function, also can play the effect of energy can be saved.

Preferably, the overflow valve sleeve is provided with a necking section, a first sealing element is mounted on the inner wall of the necking section, and the first sealing element and the outer side wall of the first sealing end form sealing.

Preferably, the check valve comprises a pressure maintaining valve core and a second reset piece, a second sealing piece is arranged on the inner wall, far away from the cavity, of the pressure relief channel, and the second sealing piece and the outer side wall of the pressure maintaining valve core form sealing.

Preferably, a push rod is arranged in the overflow valve sleeve, a third reset piece is sleeved on the push rod, the push rod is located between the overflow valve core and the switch assembly, the overflow valve core moves to drive the push rod to move, and the movement of the push rod controls the start and stop of the switch assembly.

Preferably, a channel for communicating the end part of the overflow valve core to provide water flow is arranged between the cavity and the water outlet pipeline.

Preferably, a third sealing element is arranged on the outer side wall of the overflow valve core, and the third sealing element keeps sealing with the inner wall of the cavity.

Preferably, the pressure maintaining valve assembly comprises a slide valve and a fourth resetting piece, the end part of the slide valve facing the cavity is provided with a fourth sealing piece, the fourth resetting piece pushes the slide valve to move towards the cavity, and the fourth sealing piece is in contact with the inner wall of the water outlet pipeline to form a seal.

Preferably, a second sealing end is arranged at the end part, close to the cavity, of the sliding valve, the second sealing end is conical, the fourth sealing element is arranged on the side wall of the second sealing end, and the water outlet pipeline is provided with a bell mouth matched with the second sealing end.

Preferably, the switch assembly comprises a switch box connected with the valve body, a microswitch is arranged in the switch box, and a normally closed contact is arranged on one side, facing the valve body, of the microswitch.

Preferably, the side wall of the switch box is provided with a shielding plate, and the shielding plate is detachably connected with the switch box.

Other features and advantages of the present invention will be disclosed in more detail in the following detailed description and the accompanying drawings.

[ description of the drawings ]

The invention will be further explained with reference to the drawings:

fig. 1 is a cross-sectional view of an embodiment of the present invention.

Reference numerals: 1 valve body, 11 water inlet pipes, 12 water outlet pipes, 13 overflow pipes, 14 channels, 21 overflow valve cores, 211 first sealing ends, 212 third sealing elements, 22 overflow valve sleeves, 221 first sealing elements, 23 first resetting elements, 24 ejector rods, 25 third resetting elements, 3 pressure maintaining valve assemblies, 31 pressure maintaining valve cores, 32 second resetting elements, 33 second sealing elements, 34 fourth sealing elements, 35 fourth resetting elements, 41 switch boxes, 42 micro switches and 43 baffle plates.

[ detailed description ] A

The technical solutions of the embodiments of the present invention are explained and explained below with reference to the drawings of the embodiments of the present invention, but the embodiments described below are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the embodiment, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Example 1:

as shown in fig. 1, this embodiment shows a stable pressure retaining valve, which includes a valve body 1 having a cavity, the cavity is connected to a water inlet pipe 11 and a water outlet pipe 12, an overflow valve assembly is disposed in the cavity, the overflow valve assembly is connected to an overflow pipe 13, the overflow valve assembly includes an overflow valve core 21 and an overflow valve sleeve 22, a third sealing element 212 is sleeved on an outer side wall of the overflow valve core 21, the third sealing element 212 and an inner wall of the cavity maintain interference fit to form a seal, a first sealing end 211 that maintains a seal with the overflow valve sleeve 22 is disposed at an end of the overflow valve core 21, the overflow valve sleeve 22 is provided with a necking section, a first sealing element 221 is mounted on an inner wall of the necking section, the first sealing element 221 and an outer side wall of the first sealing end 211 form a seal, a first resetting element 23 is sleeved on the overflow valve core 21, the first resetting element 23 is limited between the overflow valve core 21 and the overflow valve sleeve 22, and the first resetting element 23 pushes the overflow valve core 21 away from the overflow valve sleeve 22, so that the first sealing end 211 and the first sealing element 221 maintain contact with the first sealing end 211.

In this embodiment, a slidable pressure retaining valve assembly 3 is disposed in the water outlet pipe 12, the pressure retaining valve assembly 3 includes a sliding valve and a fourth resetting member 35, a second sealing end is disposed at an end portion of the sliding valve close to the cavity, the second sealing end is tapered, a fourth sealing member 34 is disposed on a side wall of the second sealing end, the water outlet pipe 12 is provided with a bell mouth matched with the second sealing end, the fourth resetting member 35 pushes the sliding valve to move toward the cavity, the fourth sealing member 34 contacts with an inner wall of the water outlet pipe 12 to form a seal, and a channel 14 for communicating an end portion of the overflow valve element 21 to provide water flow is disposed between the cavity and the water outlet pipe 12; be equipped with the pressure release passageway 14 of intercommunication outlet conduit 12 and cavity in the pressure retaining valve subassembly 3, install the check valve in the pressure release passageway 14, the check valve includes pressure retaining case 31 and second piece 32 that resets, the inner wall that the cavity was kept away from to pressure release passageway 14 is equipped with second sealing member 33, second sealing member 33 with the lateral wall of pressure retaining case 31 forms sealedly.

The overflow valve sleeve 22 is internally provided with an ejector rod 24, the ejector rod 24 is sleeved with a third reset piece 25, the ejector rod 24 is located between the overflow valve core 21 and the switch assembly, the switch assembly includes a switch box 41 connected with the valve body 1, the switch box 41 is internally provided with a micro switch 42, one side of the micro switch 42 facing the valve body 1 is provided with a normally closed contact, the overflow valve core 21, the ejector rod 24 and the normally closed contact are located on the same straight line, when the overflow valve core 21 moves towards the overflow valve sleeve 22, the overflow valve core 21 pushes the ejector rod 24 to move towards the switch assembly, so that the ejector rod 24 presses the normally closed switch, the side wall of the switch box 41 is provided with a shielding plate 43, and the shielding plate 43 is detachably connected with the switch box 41, so that the micro switch 42 can be conveniently maintained, in this embodiment, the overflow valve core 21 and the ejector rod 24 are two components, but in other embodiments, the overflow valve core 21 and the ejector rod 24 may also be integrally formed.

The working principle of the embodiment is as follows:

in this embodiment, the water inlet pipe 11 is connected to a high-pressure waterway, the overflow pipe 13 is connected to a low-pressure waterway, the water outlet pipe 12 is connected to a high-pressure gun, in a working state, medium-high pressure water in the high-pressure waterway enters the cavity through the water inlet pipe 11, the pressure retaining valve assembly 3 is pushed open by the action of water pressure, high-pressure water flows out from the water outlet of the water outlet pipe 12, at this time, the first resetting member 23 applies a force to the overflow valve core 21, which is far away from the overflow valve sleeve 22, so that the first sealing end 211 is in contact with the first sealing member 221 to form sealing, the water inlet pipe 11 is isolated from the overflow pipe 13, the ejector rod 24 is separated from the switch assembly, and the whole machine works normally.

When the high-pressure gun is shut down, the water outlet pipe of the water outlet pipeline 12 is closed, the water pressure at the position of the overflow valve core 21 rises sharply, when the water pressure is greater than the force provided by the first reset piece 23, the overflow valve core 21 is pushed and moves towards the overflow valve sleeve 22, the first sealing end 211 and the second sealing ring are separated from each other in the movement process of the overflow valve sleeve 22, so that the overflow valve sleeve 22 and the first sealing end 211 are in sealing contact, the water inlet pipeline 11 and the overflow pipeline 13 are communicated with each other, high-pressure water flows towards a low-pressure water channel, so that the water pressure in the cavity is reduced, the water pressure in the cavity after the gun is shut down is far less than the water pressure during working, the burden of the high-pressure water on the valve body 1 is reduced, the service life of the valve body 1 can be greatly prolonged, the material requirement on the valve body 1 is reduced, meanwhile, the valve body 1 can be prevented from being burst due to the high-pressure water, the use risk is reduced, and the use safety of a user is improved.

In addition, a channel 14 for communicating the end part of the overflow valve core 21 to provide water flow is arranged between the cavity and the water outlet pipe 12, and after the high-pressure gun is shut down, the water in the water outlet pipe 12 provides moving force for the overflow valve core 21 through the channel 14.

In the process that the overflow valve core 21 moves in this embodiment, the overflow valve core 21 pushes the ejector rod 24 to move, so that the ejector rod 24 presses the normally closed contact of the microswitch 42, the whole circuit is cut off, the whole machine stops running, the function of automatic stop is realized, and the energy consumption of this embodiment is reduced.

As the outlet of the outlet pipe 12 is closed, the high pressure water of the inlet pipe 11 flows to the overflow pipe 13 through the overflow valve sleeve 22, the dwell valve assembly 3 is moved towards the cavity by the fourth reset element 35, the fourth seal 34 of the pressure maintaining valve assembly 3 contacts the inner wall of the water outlet pipe 12 to form a seal, the water inlet pipe 11 and the water outlet pipe 12 are isolated from each other, and in the process that the water pressure in the cavity flows to the overflow pipe 13, the water pressure in the cavity is gradually reduced, a pressure difference is formed between the cavity and the water outlet pipeline 12, when the pressure difference between the outlet conduit 12 and the cavity is greater than the force provided by the second restoring member 32, the water in the water outlet pipe 12 pushes the pressure maintaining valve core 31 to move towards the cavity, so that the pressure maintaining valve core 31 is separated from the second sealing element 33, the pressure relief channel 14 communicates the cavity with the water outlet pipe 12, water at the water outlet pipe 12 flows into the cavity through the pressure relief channel 14, thereby reducing the water pressure at the outlet conduit 12, and when the pressure difference between the outlet conduit 12 and the cavity is less than the holding force of the second restoring member 32, the pressure maintaining valve core 31 is reset under the action of the second reset piece 32, so that the pressure maintaining valve core 31 is contacted with the second sealing piece 33 to form sealing, the water flow at the water outlet pipe 12 cannot pass through the one-way valve to realize pressure maintaining, and in this embodiment, after the gun is closed, the water pressure in the water outlet pipe 12 can be reduced, and partial water pressure at the water outlet pipeline 12 can be reserved to provide water pressure for next gun opening, so that the high-pressure gun can have larger water pressure in the moment of gun opening, and the energy consumption can be saved.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.

Claims (10)

1. The utility model provides a stable pressure retaining valve, is including the valve body that is equipped with the cavity, the cavity even has inlet channel and outlet conduit respectively, and outlet conduit's exit linkage has high pressure gun, be equipped with the overflow valve subassembly in the cavity, the overflow valve subassembly is connected with overflow pipeline, its characterized in that: the overflow valve component comprises an overflow valve core and an overflow valve sleeve, wherein the end part of the overflow valve core is provided with a first sealing end which is kept sealed by the overflow valve sleeve, a first resetting piece is sleeved on the overflow valve core, a slidable pressure maintaining valve component is arranged in the water outlet pipeline, the pressure maintaining valve component moves to the joint of the water outlet pipeline and the cavity and forms sealing with the inner wall of the water outlet pipeline, a pressure relief channel which is communicated with the water outlet pipeline and the cavity is arranged in the pressure maintaining valve component, a one-way valve is arranged in the pressure relief channel, the valve body is connected with a switch component, and the overflow valve core controls the start and stop of the switch component in a moving mode.

2. A stable pressure retaining valve according to claim 1, wherein: the overflow valve is sleeved with a necking section, a first sealing element is installed on the inner wall of the necking section, and the first sealing element and the outer side wall of the first sealing end form a seal.

3. A stabilized pressure retaining valve according to claim 1, wherein: the check valve comprises a pressure maintaining valve core and a second resetting piece, a second sealing piece is arranged on the inner wall, far away from the cavity, of the pressure relief channel, and the second sealing piece and the outer side wall of the pressure maintaining valve core form sealing.

4. A stable pressure retaining valve according to claim 1, wherein: the overflow valve sleeve is internally provided with a top rod, a third reset piece is sleeved on the top rod, the top rod is located between the overflow valve core and the switch assembly, the overflow valve core moves to drive the top rod to move, and the movement of the top rod controls the start and stop of the switch assembly.

5. A stabilized pressure retaining valve according to claim 1, wherein: a channel for communicating the end part of the overflow valve core to provide water flow is arranged between the cavity and the water outlet pipeline.

6. A stabilized pressure retaining valve according to claim 1, wherein: and a third sealing element is arranged on the outer side wall of the overflow valve core, and the third sealing element keeps sealing with the inner wall of the cavity.

7. A stabilized pressure retaining valve according to claim 1, wherein: the pressure maintaining valve assembly comprises a sliding valve and a fourth resetting piece, a fourth sealing piece is arranged at the end part, facing the cavity, of the sliding valve, the fourth resetting piece pushes the sliding valve to move towards the cavity, and the fourth sealing piece is in contact with the inner wall of the water outlet pipeline to form sealing.

8. A stabilized pressure retaining valve according to claim 7, wherein: the end part of the slide valve close to the cavity is provided with a second sealing end, the second sealing end is conical, the fourth sealing element is arranged on the side wall of the second sealing end, and the water outlet pipeline is provided with a horn mouth matched with the second sealing end.

9. A stable pressure retaining valve according to claim 1, wherein: the switch assembly comprises a switch box connected with the valve body, a microswitch is arranged in the switch box, and a normally closed contact is arranged on one side, facing the valve body, of the microswitch.

10. A stable pressure retaining valve according to claim 9, wherein: the side wall of the switch box is provided with a shielding plate, and the shielding plate is detachably connected with the switch box.

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