CN221145418U

CN221145418U - Pressure relief valve for compressor

Info

Publication number: CN221145418U
Application number: CN202323326983.1U
Authority: CN
Inventors: 王皓立
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-12-07
Filing date: 2023-12-07
Publication date: 2024-06-14
Anticipated expiration: 2033-12-07

Abstract

The utility model relates to the technical field of pressure relief valves, and discloses a pressure relief valve for a compressor, which has the advantage of adjusting pressure relief, a valve cover is screwed, the valve cover rotates downwards along a part in threaded connection with a valve body, a compression ring drives a sealing ring to downwards extrude a pressing block, the pressing block compresses a spring at the bottom of the pressing block until the spring is stretched to a proper height, the stretching height of the spring determines the elasticity of the spring, thereby realizing the adjustment of a pressure relief pressure protection value.

Description

Pressure relief valve for compressor

Technical Field

The utility model relates to the technical field of pressure relief valves, in particular to a pressure relief valve for a compressor.

Background

The pressure relief valve of the compressor is a safety device, and mainly has the function of automatically opening the pressure relief valve port under the condition of over-high pressure to release the over-high pressure so as to protect the compressor and other related equipment. The pressure relief valve generally consists of a valve body, a valve seat, a spring, a guide piece and the like. When the internal pressure of the compressor exceeds the pressure value set by the pressure relief valve, the pressure relief valve is automatically opened to release the excessive gas pressure, so that the safe operation of the compressor and other related equipment is ensured. When the compressor is shut down, additional pressure is built up in the compressor by the residual gases which, if there is no pressure relief valve, will be enveloped by the compressor's containment structure for a period of time, creating additional pressure. Therefore, when the compressor is stopped, the pressure relief valve can be automatically opened to release the surplus gas so as to ensure the safe operation of the compressor and other related equipment. When the compressor is started, the pressure relief valve is also automatically closed, so that enough gas is pressed into the compressor to ensure the normal operation of the compressor.

According to the compressor relief valve disclosed in China patent No. CN209557673U, the relief valve is arranged on a shell of the compressor and comprises a valve seat, a valve core, an air inlet hole and an air outlet hole; the valve core comprises an elastic piece and a valve plate, wherein the first end of the elastic piece is fixedly connected with the valve plate, the second end of the elastic piece is fixedly connected with the inside of the valve seat, and the valve plate is close to the air inlet. The utility model also provides a compressor, which comprises a pressure relief valve, a control system, a motor, a compression mechanism and a shell, wherein the shell is provided with a pressure relief hole, and part of the pressure relief valve is embedded into the pressure relief hole of the shell. In the scheme, the pressure relief valve is arranged at the high-temperature high-pressure end of the compressor, and when the exhaust facility at the high-temperature high-pressure end of the compressor fails or the internal pressure of the compressor is too high, the pressure relief valve is opened, and the internal too high pressure of the compressor is released; therefore, the compressor can be protected, and safety accidents caused by overhigh internal pressure of the compressor can be prevented.

The exhaust pressure of different units in the compressor is different, but the pressure range of the elastic piece cannot be adjusted when the compressor is used for pressure relief, so that the exhaust pressure cannot be adjusted according to the actual condition of the compressor unit, and different pressure relief valves are required to be reinstalled when the compressor is applied to different units, so that the applicability is poor.

Disclosure of utility model

(One) solving the technical problems

Aiming at the defects of the prior art, the utility model provides the pressure relief valve for the compressor, which has the advantage of adjusting the pressure relief pressure, and solves the problems that the pressure relief pressures required by different units of the compressor are different and the preset pressure is inconvenient to adjust.

(II) technical scheme

In order to achieve the above purpose, the present utility model provides the following technical solutions: a pressure relief valve for a compressor, comprising an outer frame comprising:

The valve body, its bottom link up and is provided with the air inlet, the valve body outside is provided with the screw thread, valve body top threaded connection has the valve gap, the valve gap center runs through and is provided with the gas outlet, the valve body with be provided with pressure release subassembly on the valve gap, pressure release subassembly includes:

the compression ring is arranged at the bottom of the valve cover and surrounds the air outlet;

the air cavity is arranged inside the valve body;

The outer side of the pressing block is slidingly connected to the inner side wall of the air cavity;

The vent is arranged in the center of the pressing block in a penetrating way, and the top end of the vent is communicated with the bottom end of the air outlet;

The top end of the spring is arranged at the bottom of the pressing block;

The sealing gasket is arranged at the bottom end of the spring, and the spring is sleeved outside the protruding block at the top end of the sealing gasket.

Preferably, a sealing ring is arranged at the bottom of the pressing ring, and the bottom of the sealing ring is abutted to the top of the pressing block.

Preferably, the outer side wall of the valve cover is provided with an anti-skid sleeve.

Preferably, a silencing block is adhered to the inside of the air outlet.

Preferably, guide rods are symmetrically arranged on the bottom plate inside the valve body, and the guide rods encircle the sealing gasket.

Preferably, the diameter of the central opening of the sealing ring is the same as the diameter of the air vent, and the sealing gasket can cover the air inlet.

Preferably, the sealing ring and the sealing gasket are made of rubber materials.

(III) beneficial effects

Compared with the prior art, the utility model provides the pressure release valve for the compressor, which has the following beneficial effects:

This relief valve possesses the advantage of adjusting pressure release pressure, twist the valve gap, the valve gap is along the part down rotation with valve body threaded connection, the clamping ring drives the sealing ring and extrudees the briquetting downwards this moment, the briquetting compresses the spring of its bottom, until the spring is flexible to suitable height, the spring's flexible height has decided the elasticity of spring, thereby realized the regulation of pressure release pressure protection value, when the gas pressure is great in the compressor, gas promotes sealed the pad through the air inlet and upwards jack-up, until gas pressure exceeds the pressure protection value of accomplishing the regulation, sealed pad receives gas pressure and upwards extrudees the spring, sealed pad keeps away from the air inlet after, gas gets into the air cavity inside, through the air vent, the sealing ring arrives gas outlet department, accomplish the pressure release operation, the required pressure release of different units of compressor is different, inconvenient regulation preset pressure's problem has been solved.

Drawings

FIG. 1 is a schematic cross-sectional view of the structure of the present utility model;

fig. 2 is a bottom view of the gasket of the present utility model.

In the figure:

1. An outer frame; 11. a valve body; 12. an air inlet; 13. a valve cover; 14. an air outlet;

2. A pressure relief assembly; 21. a compression ring; 22. an air cavity; 23. briquetting; 24. a vent; 25. a seal ring; 26. a spring; 27. a sealing gasket;

3. A sound attenuation block; 4. a guide rod.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. 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.

Example 1

Referring to fig. 1-2, a pressure relief valve for a compressor includes an outer frame 1, the outer frame 1 including: the valve body 11, its bottom link up and is provided with air inlet 12, the valve body 11 outside is provided with the screw thread, valve body 11 top threaded connection has valve gap 13, valve gap 13 center is provided with gas outlet 14 in a run through, valve body 11 with be provided with pressure release subassembly 2 on valve gap 13, pressure release subassembly 2 includes: the clamping ring 21 is arranged at the bottom of the valve cover 13, the clamping ring 21 surrounds the air outlet 14, the air cavity 22 is arranged in the valve body 11, the pressing block 23 is slidably connected to the inner side wall of the air cavity 22, the air vent 24 is arranged at the center of the pressing block 23 in a penetrating manner, the top end of the pressing ring is communicated with the bottom end of the air outlet 14, the top end of the spring 26 is arranged at the bottom of the pressing block 23, the sealing gasket 27 is arranged at the bottom end of the spring 26, and the spring 26 is sleeved outside the protruding block at the top end of the sealing gasket 27. The bottom of the pressing ring 21 is provided with a sealing ring 25, and the bottom of the sealing ring 25 is abutted to the top of the pressing block 23. The outer side wall of the valve cover 13 is provided with an anti-skid sleeve. The inside of the air outlet 14 is adhered with a silencing block 3.

The operating personnel installs valve body 11 to the compressor, twist valve gap 13, valve gap 13 rotates downwards along the part with valve body 11 threaded connection, at this moment clamping ring 21 drives sealing ring 25 and extrudees briquetting 23 downwards, briquetting 23 compresses the spring 26 of its bottom, until spring 26 is by flexible to suitable height, the elasticity of spring 26 has been decided to the flexible height of spring 26, thereby realize the regulation of pressure relief pressure protection value, when the gas pressure in the compressor is great, gas promotes sealing washer 27 through air inlet 12 and jack-up, until gas pressure exceeds the pressure protection value that the regulation is accomplished, sealing washer 27 receives gas pressure to upwards extrude spring 26, sealing washer 27 keeps away from behind air inlet 12, gas gets into air cavity 22 inside, through air vent 24, sealing ring 25 reaches gas outlet 14 department, noise reduction piece 3 in the gas outlet 14 reduces the noise that gas was emitted by gas outlet 14, sealing ring 25 ensures that the gas can not take place the condition of revealing when passing through briquetting 23 and 21, thereby influence the effect, the anti-slip cover 13 outside sets up makes the operating personnel increase the frictional force between valve gap and 13 when screwing up valve gap 13, make things convenient for screwing up valve gap 13 more.

Example two

On the basis of the first embodiment, an auxiliary function is added.

Referring to fig. 1-2, the guide rods 4 are symmetrically arranged on the inner bottom plate of the valve body 11, and the guide rods 4 encircle the sealing gasket 27. The guide rod 4 always keeps the vertical direction to the sealing gasket 27 when being influenced by the air pressure to move up and down, the sealing gasket 27 is prevented from not correctly returning to the original position when the pressure release operation is completed once, the sealing effect on the air inlet 12 is influenced, the diameter of the central opening of the sealing ring 25 is the same as that of the air vent 24, the sealing effect of the sealing ring 25 between the pressing block 23 and the pressing ring 21 is better, the sealing gasket 27 can cover the air inlet 12, and the air inlet 12 has a good sealing effect on the air inlet 12 compared with the sealing gasket 27 due to the sealing gasket 27. The sealing ring 25 and the sealing gasket 27 are made of rubber, the sealing gasket 27 made of rubber deforms when being extruded to the air inlet 12 by the spring 26, the air inlet 12 is firmly plugged, and the sealing effect is good.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A pressure relief valve for a compressor, characterized by: comprising an outer frame (1), the outer frame (1) comprising:

valve body (11), its bottom link up and is provided with air inlet (12), valve body (11) outside is provided with the screw thread, valve body (11) top threaded connection has valve gap (13), valve gap (13) center is run through and is provided with gas outlet (14), valve body (11) with be provided with pressure release subassembly (2) on valve gap (13), pressure release subassembly (2) include:

The compression ring (21) is arranged at the bottom of the valve cover (13), and the compression ring (21) surrounds the air outlet (14);

an air chamber (22) provided inside the valve body (11);

The pressing block (23) is slidingly connected to the inner side wall of the air cavity (22) at the outer side;

A vent (24) which is arranged in the center of the pressing block (23) in a penetrating way, and the top end of which is communicated with the bottom end of the air outlet (14);

the top end of the spring (26) is arranged at the bottom of the pressing block (23);

The sealing gasket (27) is arranged at the bottom end of the spring (26), and the spring (26) is sleeved outside the protruding block at the top end of the sealing gasket (27).

2. The pressure release valve for a compressor according to claim 1, wherein: the bottom of the pressing ring (21) is provided with a sealing ring (25), and the bottom of the sealing ring (25) is abutted to the top of the pressing block (23).

3. The pressure release valve for a compressor according to claim 2, wherein: an anti-skid sleeve is arranged on the outer side wall of the valve cover (13).

4. A pressure relief valve for a compressor as defined in claim 3, wherein: the inside of the air outlet (14) is adhered with a silencing block (3).

5. The pressure release valve for a compressor according to claim 4, wherein: guide rods (4) are symmetrically arranged on the inner bottom plate of the valve body (11), and the guide rods (4) encircle the sealing gasket (27).

6. The pressure release valve for a compressor according to claim 5, wherein: the diameter of the central opening of the sealing ring (25) is the same as that of the air vent (24), and the sealing gasket (27) can cover the air inlet (12).

7. The pressure release valve for a compressor according to claim 6, wherein: the sealing ring (25) and the sealing gasket (27) are made of rubber materials.