CN214699356U

CN214699356U - High-pressure one-way valve

Info

Publication number: CN214699356U
Application number: CN202120676927.2U
Authority: CN
Inventors: 王文瑞; 叶鹏军
Original assignee: Yuyu Machinery Shanghai Co ltd
Current assignee: Yuyu Machinery Shanghai Co ltd
Priority date: 2021-04-01
Filing date: 2021-04-01
Publication date: 2021-11-12
Anticipated expiration: 2031-04-01

Abstract

The utility model discloses a high-pressure check valve, include the valve body and install the check valve upper cover at the valve body tip, the inside of valve body is provided with case subassembly, first O type circle and second O type circle, the inside of case subassembly is provided with the spring, set up the round hole that the symmetry distributes on the case subassembly, the check valve upper cover with all set up gas passage on the valve body respectively and with gas passage through connection's screw hole, the spring set up in the case subassembly with between the check valve upper cover. The beneficial effects of the utility model are that, back in high-pressure gas gets into the check valve, the case subassembly can be pressurized, compression spring, in high-pressure gas will get into the case subassembly from the round hole on the case subassembly, then pass the gas passage that the spring covered from the check valve in proper order and get into gas storage equipment, when no high-pressure gas leads to, the spring returns the normal position, and the case subassembly gets back to the normal position and plugs up the gas passage of valve body to prevent the gas reflux in the gas storage equipment.

Description

High-pressure one-way valve

Technical Field

The utility model relates to a valve control system technical field, especially a high pressure check valve.

Background

The high-pressure one-way valve is an important part in ultrahigh-pressure equipment and is also one of the most vulnerable parts. Especially in the process of conveying high-pressure gas, after the high-pressure compressor is inflated, the gas in the gas storage equipment is easy to flow back, and the high-pressure compressor can also generate a gas leakage phenomenon, so that the high-pressure gas in the gas storage equipment is leaked, and the gas leakage phenomenon can cause impurity of the gas in the gas storage equipment to influence the production.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem, a high-pressure one-way valve is designed.

Realize above-mentioned purpose the technical scheme of the utility model be, a high-pressure check valve, include the valve body and install the check valve upper cover at the valve body tip, the inside of valve body is provided with case subassembly, first O type circle and second O type circle, the inside of case subassembly is provided with the spring, set up the round hole that the symmetry distributes on the case subassembly, the check valve upper cover with all set up gas passage on the valve body respectively and with gas passage through connection's screw hole, the spring set up in the case subassembly with between the check valve upper cover.

Preferably, the first O-ring is arranged between the one-way valve upper cover and the valve body, and the second O-ring is arranged between the valve core assembly and the valve body.

Preferably, the end part of the valve core assembly is of a circular truncated cone-shaped structure, and the diameter of the section of the end part of the valve core assembly is smaller than the aperture of the gas channel on the valve body.

Preferably, the diameter of the spring is larger than the hole diameter of the gas channel on the upper cover of the one-way valve.

Preferably, an inner cavity is formed in the valve core assembly, the inner cavity is in through connection with a round hole in the valve core assembly, and the depth of the inner cavity is smaller than the length of the spring.

Its beneficial effects lie in, the utility model provides a high pressure check valve has the valve body of air inlet and gas outlet, install the case subassembly in the valve body, parts such as spring, and offer the round hole that is used for gas to let in on the case subassembly, high-pressure gas gets into back in the check valve, the case subassembly can be pressurized, compression spring, high-pressure gas will get into in the case subassembly from the round hole on the case subassembly, then pass the spring in proper order and get into in the gas storage equipment from the gas passage that the check valve upper cover was covered, when no high-pressure gas lets in, the spring returns the normal position, the gas passage that the valve body was plugged up to the case subassembly back to the normal position, thereby prevent the gas reflux in the gas storage equipment, this high pressure check valve has simple structure, high pressure compressor is after aerifing the end, prevent that the gas in the gas storage equipment from producing the string of gas phenomenon.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural view of the valve body of the present invention;

fig. 3 is a schematic sectional structure diagram of the present invention.

In the figure, 1, a valve body; 2. an upper cover of the one-way valve; 3. a valve core assembly; 31. an inner cavity; 4. a second O-ring; 5. a first O-ring; 6. a spring; 7. a gas channel; 8. a threaded bore.

Detailed Description

First explain the utility model discloses a design original intention, all can use the check valve in a lot of fields of industry processing, high-pressure compressor is at the during operation, and is very high to the leakproofness and the intensity requirement of valve, and the gas of compressed is when the check valve gets into gas storage equipment, probably produces the phenomenon of gas reflux, and the compressor also can produce the phenomenon of gas mixing, and this can lead to the gas of storing among the gas storage equipment impure, influences gaseous pressure moreover, in order to solve above-mentioned problem, the utility model provides a high-pressure check valve, it has solved current high-pressure check valve and gas storage equipment and has the gas reflux phenomenon, prevents that the compressor from producing the gas mixing phenomenon.

The present invention is described in detail below with reference to the accompanying drawings, as shown in fig. 1-3, the high pressure check valve includes a valve body 1 and a check valve upper cover 2 installed at an end of the valve body 1, the valve body 1 is mainly connected to a compressor device, a valve core assembly 3, a first O-ring 5 and a second O-ring 4 are installed inside the valve body 1, wherein the first O-ring 5 is installed between the check valve upper cover 2 and the valve body 1, the second O-ring 4 is installed between the valve core assembly 3 and the valve body 1, and they mainly perform a sealing function, and the diameter of the first O-ring 5 is larger than that of the second O-ring 4 and is respectively matched with the check valve upper cover 2 and the valve core assembly 3; the check valve upper cover 2 and the valve body 1 are respectively provided with an air channel 7 and a threaded hole 8 communicated with the air channel 7.

Compared with the traditional check valve, the utility model provides a check valve can bear high-pressure gas, in order to play switching on and being closed to air inlet and gas outlet, inside at case subassembly 3 is provided with spring 6, inner chamber 31 has been seted up on case subassembly 3, spring 6 sets up between case subassembly 3 and check valve upper cover 2, be located the inner chamber 31 of case subassembly 3, spring 6's diameter is greater than the aperture of gas channel 7 on the check valve upper cover 2, and the degree of depth of inner chamber 31 is less than the length of spring 6 and still seted up into symmetric distribution's round hole on case subassembly 3, this round hole is through connection with the inner chamber 31 of case subassembly 3, gas gets into inner chamber 31 from the round hole, then let in the gas channel 7 on the check valve upper cover 2 from inner chamber 31.

In order to enhance the sealing performance of the valve core assembly 3 on the gas channel 7 on the valve body 1, the shape and the size of the valve core assembly 3 are also limited, the end part of the valve core assembly 3 is in a circular truncated cone-shaped structure, the diameter of the end part section of the partial structure is smaller than the pore diameter of the gas channel 7 on the valve body 1, the valve core assembly 3 can return to the original position after the spring 6 is not pressed to return to the original position, if gas flows back, high-pressure gas can pass through the inner cavity 31 of the valve core assembly 3 and provide pressure for the valve core assembly 3, so that the valve core assembly 3 can block the gas channel 7 on the valve body 1, the larger the gas pressure is, the larger the stress of the valve core assembly 3 is, and the stronger the sealing performance is.

Above-mentioned technical scheme has only embodied the utility model discloses technical scheme's preferred technical scheme, some changes that this technical field's technical personnel probably made to some parts wherein have all embodied the utility model discloses a principle belongs to within the protection scope of the utility model.

Claims

1. The utility model provides a high-pressure check valve, includes valve body (1) and installs check valve upper cover (2) at valve body (1) tip, its characterized in that, the inside of valve body (1) is provided with case subassembly (3), first O type circle (5) and second O type circle (4), the inside of case subassembly (3) is provided with spring (6), set up into symmetric distribution's round hole on case subassembly (3), check valve upper cover (2) with all set up gas passage (7) and threaded hole (8) with gas passage (7) through connection on valve body (1) respectively, spring (6) set up in case subassembly (3) with between check valve upper cover (2).

2. The high pressure check valve according to claim 1, characterized in that the first O-ring (5) is disposed between the check valve upper cover (2) and the valve body (1), and the second O-ring (4) is disposed between the spool assembly (3) and the valve body (1).

3. The high-pressure one-way valve is characterized in that the end part of the valve core assembly (3) is of a circular truncated cone structure, and the diameter of the cross section of the end part of the valve core assembly (3) is smaller than the hole diameter of the gas channel (7) on the valve body (1).

4. A high pressure check valve according to claim 1, characterized in that the diameter of the spring (6) is larger than the diameter of the gas passage (7) in the upper cover (2) of the check valve.

5. The high-pressure one-way valve according to claim 1, wherein an inner cavity (31) is formed in the valve core assembly (3), the inner cavity (31) is connected with a round hole in the valve core assembly (3) in a penetrating manner, and the depth of the inner cavity (31) is smaller than the length of the spring (6).