CN221221491U - High pressure difference relief pressure valve - Google Patents

Abstract

The utility model discloses a high-pressure-difference pressure-reducing valve, which comprises a valve body, wherein a piston cylinder is arranged on the valve body, a piston is connected in a sliding manner in the piston cylinder, a blocking cover for limiting the piston to slide out is arranged at one end of the piston cylinder, which is not connected with the valve body, a driving hole is formed in the blocking cover, a driving rod is arranged in the driving hole, a pressure-reducing channel for gas to escape is reserved between the driving rod and the driving hole, at least two pressure-reducing grooves extending along the axial direction of the pressure-reducing channel are formed in the inner wall of the piston cylinder, and one end of all the pressure-reducing grooves, which is opposite to the blocking cover, extends to the end face of the piston cylinder and one end, which faces the blocking cover, of the pressure-reducing grooves extends to different lengths; an elastic piece with one end propped against the piston and the other end propped against the valve body is arranged in the piston cylinder. The pressure reducing valve changes the number of pressure reducing grooves communicated with the pressure reducing channel by changing the pressing depth of the piston, so that the effect of selective use between a conventional pressure reducing environment and a high-pressure-difference pressure reducing environment is achieved, the application range is wide, the use is flexible and convenient, the whole function is perfect, and the practicability is strong.

Description

High pressure difference relief pressure valve

Technical Field

The present utility model relates to a pressure reducing valve, and more particularly, to a high pressure differential pressure reducing valve.

Background

When the traditional pressure reducing valve is in an open state, the exhaust quantity of an exhaust port of the traditional pressure reducing valve is slowed down along with the continuous reduction of the internal pressure of the container, and when the exhaust pressure is reduced to a certain value, the pressure reducing speed is slow, so that the overall effect is poor. Accordingly, the utility model provides a high pressure differential pressure reducing valve.

Disclosure of utility model

The utility model aims to overcome the defects in the prior art and provide a high-pressure-difference pressure reducing valve.

In order to solve the technical problems, the aim of the utility model is realized as follows: the utility model relates to a high-pressure-difference pressure-reducing valve, which comprises a valve body, wherein a piston cylinder is arranged on the valve body, one end of the piston cylinder is communicated with the interior of the valve body, the other end of the piston cylinder is communicated with the outside, a piston is connected in a sliding manner in the piston cylinder, one end of the piston cylinder, which is not connected with the valve body, is provided with a blocking cover for limiting the piston to slide out, a driving hole is formed in the blocking cover, one end of the driving hole extends out of a hole, the other end of the driving hole is connected with a driving rod of the piston, the driving rod extends along the axial direction of the piston cylinder, a pressure-reducing channel for gas to escape is reserved between the driving rod and the driving hole, at least two pressure-reducing grooves extending along the axial direction of the driving rod are formed in the inner wall of the piston cylinder, and one end of all the pressure-reducing grooves, which are opposite to the blocking cover, extends to the end face of the piston cylinder, and the extending length of one end of the blocking cover is unequal; an elastic piece with one end propping against the piston and the other end propping against the valve body is arranged in the piston cylinder.

The utility model is further provided with: the pressure relief grooves are distributed in an annular array around the axis of the piston cylinder.

The utility model is further provided with: the interval included angles between two adjacent pressure relief grooves are equal.

The utility model is further provided with: the number of the pressure relief grooves is four, six or eight.

The utility model is further provided with: and a sealing ring arranged on the blocking cover or the piston is arranged between the blocking cover and the piston, and the sealing ring surrounds the pressure release channel.

The utility model is further provided with: the elastic piece is a compression spring.

In summary, the utility model has the following beneficial effects: according to the high-pressure-difference pressure reducing valve, the number of the pressure reducing grooves communicated with the pressure reducing channel is changed by changing the pressing depth of the piston, so that the effect of selective use between a conventional pressure reducing environment and a high-pressure-difference pressure reducing environment is achieved, the application range is wide, the use is flexible and convenient, the overall function is complete, and the practicability is high.

Drawings

Fig. 1 is a schematic view of the overall structure of the present utility model.

Detailed Description

In order that those skilled in the art will better understand the technical solutions of the present utility model, preferred embodiments of the present utility model will be described below with reference to specific examples, but it should be understood that these descriptions are only for further illustrating the features and advantages of the present utility model, and are not limiting the patent claims of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model will be further described with reference to the drawings and preferred embodiments.

Example 1

Referring to fig. 1, a high pressure differential relief valve according to this embodiment includes a valve body 1, a piston cylinder 2 with one end communicating with the interior of the valve body and the other end communicating with the outside is provided on the valve body 1, a piston 3 is slidably connected in the piston cylinder 2, a stop cover 4 for limiting the sliding out of the piston is provided on one end of the piston cylinder 2, which is not connected with the valve body, a driving hole 5 is provided on the stop cover 4, a driving rod 6 with one end extending out of a hole and the other end connecting with the piston is provided in the driving hole 5, the driving rod 6 extends along the axial direction of the piston cylinder 2, a relief channel (not labeled in the figure) for releasing gas is reserved between the driving rod 6 and the driving hole 5, at least two relief grooves 7 extending along the axial direction of the driving rod are provided on the inner wall of the piston cylinder 2, one end of all the relief grooves 7 facing away from the stop cover 4 extends to the end surface of the piston cylinder, and one end extending length facing the stop cover 4 is different; an elastic piece 8 with one end propping against the piston and the other end propping against the valve body is arranged in the piston cylinder 2, and the elastic piece 8 is a compression spring.

Further, the pressure relief grooves 7 are distributed in an annular array around the axis of the piston cylinder 2.

Further, the interval included angles between two adjacent pressure relief grooves 7 are equal.

Further, the number of the pressure relief grooves 7 is four, six or eight.

In the present embodiment, the piston 3 is moved in the piston cylinder 2 in the direction facing the valve body 1 by applying an axial force to the drive rod 6 in the direction facing the valve body 1. During the movement of the piston 3, the gas can pass through the longest pressure relief groove 7 and then gradually pass through the pressure relief grooves 7 with sequentially reduced length, so that the number of the pressure relief grooves 7 communicated with the pressure relief channel is continuously increased, gas can rapidly escape from the container or the valve body 1, the number of the pressure relief grooves 7 communicated with each other can be increased while the pressure is reduced, the gas discharge speed is compensated, and the effect of rapid pressure relief is achieved.

Wherein, through the setting of drive hole 5, not only be used as installation actuating lever 6, still have the function that sets up the pressure release passageway.

Wherein, through the setting of elastic component 8, played piston 3 effect of resetting.

Example 2

Referring to fig. 1, in the high pressure differential relief valve according to this embodiment, on the basis of embodiment 1, a seal ring 9 provided on the piston is further provided between the cover 4 and the piston 3, and the seal ring 9 surrounds the relief passage.

In this embodiment, the seal 9 is disposed between the cover 4 and the piston 3, and the seal 9 surrounds the pressure release passage, thereby enhancing the sealing effect and preventing gas from escaping in the closed state.

According to the high-pressure-difference pressure reducing valve, the number of the pressure reducing grooves communicated with the pressure reducing channel is changed by changing the pressing depth of the piston, so that the effect of selective use between a conventional pressure reducing environment and a high-pressure-difference pressure reducing environment is achieved, the application range is wide, the use is flexible and convenient, the overall function is complete, and the practicability is high.

Unless specifically stated otherwise, in the present utility model, if there are terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the positional or positional relation is based on the actually shown positional or positional relation, it is merely for convenience of describing the present utility model and simplifying the description, and it is not necessary to indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, so that the terms describing the positional or positional relation in the present utility model are merely for exemplary illustration and are not to be construed as limitations of the present patent, and it is possible for those skilled in the art to combine the embodiments and understand the specific meaning of the above terms according to the specific circumstances.

Unless specifically stated or limited otherwise, the terms "disposed," "connected," and "connected" herein are to be construed broadly, e.g., they may be fixed, removable, or integral; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The foregoing describes in detail preferred embodiments of the present utility model. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the utility model by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.

Claims (6)

1. The utility model provides a high pressure differential relief pressure valve, includes valve body, its characterized in that: the valve body is provided with a piston cylinder, one end of the piston cylinder is communicated with the interior of the valve body, the other end of the piston cylinder is communicated with the outside, a piston is connected in a sliding manner, one end of the piston cylinder, which is not connected with the valve body, is provided with a blocking cover for limiting the piston to slide out, a driving hole is formed in the blocking cover, one end of the driving hole extends out of an orifice, the other end of the driving hole is connected with a driving rod of the piston, the driving rod extends along the axial direction of the piston cylinder, a pressure release channel for gas to escape is reserved between the driving rod and the driving hole, at least two pressure release grooves extending along the axial direction of the driving rod are formed in the inner wall of the piston cylinder, and one end of each pressure release groove, which is opposite to the blocking cover, extends to the end face of the piston cylinder and the end of each pressure release groove, and the extension length of the end which faces the blocking cover is unequal; an elastic piece with one end propping against the piston and the other end propping against the valve body is arranged in the piston cylinder.

2. The high pressure differential relief valve as claimed in claim 1, wherein: the pressure relief grooves are distributed in an annular array around the axis of the piston cylinder.

3. The high pressure differential relief valve as claimed in claim 2, wherein: the interval included angles between two adjacent pressure relief grooves are equal.

4. A high differential pressure relief valve as claimed in claim 3, wherein: the number of the pressure relief grooves is four, six or eight.

5. The high pressure differential pressure relief valve as claimed in any one of claims 1-4, wherein: and a sealing ring arranged on the blocking cover or the piston is arranged between the blocking cover and the piston, and the sealing ring surrounds the pressure release channel.

6. The high pressure differential relief valve as claimed in claim 1, wherein: the elastic piece is a compression spring.