CN211852918U

CN211852918U - Embedded safety valve

Info

Publication number: CN211852918U
Application number: CN202020277363.0U
Authority: CN
Inventors: 姚辉
Original assignee: Shanghai Afs Valve Co ltd
Current assignee: Shanghai Afs Valve Co ltd
Priority date: 2020-03-09
Filing date: 2020-03-09
Publication date: 2020-11-03
Anticipated expiration: 2030-03-09

Abstract

The utility model provides an embedded safety valve, which comprises a hollow cylindrical component, wherein the upper end of the hollow cylindrical component is provided with a circular end plate, the circular end plate is provided with a cover plate, and the cover plate is provided with a second gas outlet; a first air outlet is arranged in the hollow columnar component; the valve cover is provided with an axial accommodating space, one end of the axial accommodating space is open, the valve cover is arranged at the lower end of the hollow cylindrical component, and the axial accommodating space of the valve cover is communicated with the interior of the hollow cylindrical component; an air inlet is arranged on the outer wall of the valve cover; the valve clack is used for plugging the first air outlet; the elastic component comprises an upper spring seat, a lower spring seat and a spring, the upper spring seat is arranged below the valve clack and fixed in the axial containing space of the valve cover, the upper spring seat is provided with a central through hole, the upper end of the lower spring seat penetrates through the central through hole to be coaxially connected with the valve clack, and the spring is sleeved on the lower spring seat and is located between the upper spring seat and the lower spring seat. The utility model discloses make installation space unrestricted, avoided the dilemma of unable installation under abominable operating mode.

Description

Embedded safety valve

Technical Field

The utility model relates to an industrial valve specifically relates to an embedded relief valve.

Background

The safety valve of the air compressor is an automatic pressure relief protection device opened by inlet static pressure, and is a safety device arranged for preventing explosion caused by overhigh pressure under abnormal conditions in equipment and a container. Because the safety valve technology is more and more applied to various industries, the performance of the original traditional safety valve is continuously improved, and the development of new safety valve products which meet the market requirements is not easy. The safety valve commonly used at present can encounter two problems in the using process, one is that: the spring is broken and fails due to violent vibration of the valve core of the safety valve and the spring in the unloading process of the safety valve; II, secondly: the installation and the operation can not be normally carried out in a limited space, and the like. The market demand is far from being met.

Therefore, there is a need to develop a safety valve that is safe in use, reliable, and free from installation space constraints.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model aims at providing an embedded relief valve realizes that installation space is unrestricted.

In order to achieve the above object, the utility model provides an embedded relief valve, include:

the valve body is a hollow cylindrical component, a circular end plate is arranged at the upper end of the hollow cylindrical component, a cover plate is arranged on the circular end plate, the cover plate covers the upper end part of the hollow cylindrical component to seal the upper end of the hollow cylindrical component, and a second air outlet is formed in the cover plate; the circular end plate is provided with a mounting hole for connecting an air compressor pipeline; a first air outlet is formed in the hollow columnar component, and an annular groove is formed in the end face of the first air outlet;

the valve cover is provided with an axial containing space in the interior, one end of the axial containing space is open, the valve cover is arranged at the lower end of the hollow columnar component, and the axial containing space of the valve cover is communicated with the interior of the hollow columnar component; an air inlet is formed in the outer wall of the valve cover;

the valve clack is arranged at the first air outlet in the hollow columnar member and used for plugging the first air outlet, the valve clack is a columnar member with an outer edge at one end, the edge of the outer edge extends downwards to form an annular convex edge, the annular convex edge can be clamped in the annular groove, and the valve clack is axially provided with a central through hole;

the elastic assembly comprises an upper spring seat, a lower spring seat and a spring, wherein the upper spring seat is arranged below the valve clack and is fixed in the axial accommodating space of the valve cover, and the upper spring seat is provided with a central through hole; the lower spring seat is arranged in the axial accommodating space of the valve cover, and the upper end of the lower spring seat penetrates through a central through hole of the upper spring seat to be coaxially connected with the valve clack; the spring is sleeved on the lower spring seat and is positioned between the upper spring seat and the lower spring seat; the spring is elastically deformed by air pressure, so that the lower spring seat jacks up the valve clack and opens the first air outlet.

Preferably, the lower end of the valve clack is provided with a through hole for inserting the lower spring seat, and the upper end of the lower spring seat is inserted into the through hole of the valve clack to connect the valve clack with the lower spring seat.

Preferably, the in-line safety valve further comprises a pressure regulating screw for regulating pressure, and the pressure regulating screw penetrates into the lower spring seat from the central through hole of the valve clack.

Preferably, a valve clack cap is arranged on the valve clack and arranged above the pressure regulating screw.

Preferably, a polytetrafluoroethylene sealing gasket for sealing is arranged at the joint of the valve flap and the first air outlet.

Preferably, the number of the air inlets is 4.

Preferably, the number of the second air outlets is 4.

Preferably, the number of the mounting holes is 8.

Preferably, the cover plate is connected with the circular end plate through bolts.

Preferably, the valve cover is connected with the valve body through a bolt.

Compared with the prior art, the utility model discloses at least one kind's beneficial effect as follows has:

the structure of the utility model forms a compact structure space by connecting the valve cover and the valve body up and down, and the safety valve can be embedded in the pipeline of the air compressor, so that the installation space is not limited, and the dilemma that the safety valve cannot be installed under severe working conditions is avoided; meanwhile, the elastic assembly is composed of the upper spring seat, the lower spring seat and the spring, the spring is arranged between the upper spring seat and the lower spring seat, the buffering effect is achieved, and the problem that the spring is broken and fails due to violent vibration of the valve core and the spring in the unloading process of the safety valve can be effectively solved.

The utility model discloses in the above structure, adopted Polytetrafluoroethylene (PTFE) to seal up at the junction of valve gap and valve body and valve clack and first air inlet, had advantages such as corrosion-resistant, high temperature resistant, high pressure resistant, stable performance, sealed zero leakage.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a cross-sectional view of an in-line safety valve according to a preferred embodiment of the present invention;

FIG. 2 is a schematic view of an in-line safety valve according to a preferred embodiment of the present invention;

the scores in the figure are indicated as: the valve comprises a valve cover 1, a lower spring seat 2, a spring 3, an upper spring seat 4, a valve body 5, a polytetrafluoroethylene sealing gasket 6, a valve clack 7, a pressure regulating screw 8, a valve clack cap 9, a cover plate 10, a mounting hole 11, a circular end plate 12, an air inlet 101, a first air outlet 201 and a second air outlet 202.

Detailed Description

The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.

Referring to fig. 1 and 2, an embedded safety valve according to a preferred embodiment of the present invention includes a valve body 5, a valve cover 1, a valve flap 7, and an elastic component.

Referring to fig. 1, the valve body 5 is a hollow cylindrical member, and a circular end plate 12 is disposed at an upper end of the hollow cylindrical member, and the circular end plate 12 is formed by extending an outer wall of the hollow cylindrical member outward along a circumference. The cover plate covers the upper end part of the hollow cylindrical component to seal the upper end of the hollow cylindrical component. The cover plate 10 is bolted to the circular end plate 12. The cover plate 10 is provided with a second gas outlet 202, the second gas outlet 202 is communicated with the interior of the hollow cylindrical member, and the gas in the hollow cylindrical member is discharged from the second gas outlet 202. The circular end plate 12 is provided with a mounting hole 11 for connecting an air compressor pipeline. The PTFE sealing gasket is arranged at the joint of the mounting hole 11, so that the air source leakage of the air compressor caused by normal air pressure operation (safety valve closing) of the air compressor can be prevented.

Be equipped with first gas outlet 201 in hollow column component inside, be equipped with annular groove on the terminal surface of first gas outlet 201, play the effect of joint.

The upper end of the valve cover 1 is connected with the lower end of the valve body 5 through a bolt. And a PTFE sealing gasket is arranged at the joint of the valve cover 1 and the valve body 5. The valve cover 1 has an axial accommodation space inside, one end of the axial accommodation space is open, the valve cover 1 is arranged at the lower end of the hollow cylindrical member, and the axial accommodation space of the valve cover 1 is communicated with the inside of the hollow cylindrical member. An air inlet is arranged on the outer wall of the valve cover. As shown in fig. 1 and 2, an air inlet 101 is provided in an outer wall of the valve cover 1, and air enters the valve cover 1 through the air inlet 101.

The valve flap 7 is disposed at the first air outlet 201 of the valve body 5 and used for blocking the first air outlet 201. The valve clack 7 is a columnar member with an outer edge at one end, and the edge of the outer edge extends downwards to form an annular convex edge. The annular convex edge can be clamped in the annular groove to seal the first air outlet 201. The annular convex edge and the annular groove form a clamping connection structure, so that leakage is prevented and the tightness of plugging is increased in a closed state. The valve clack 7 is provided with a central through hole used for passing through a pressure regulating screw 8 along the axial direction, the elastic assembly comprises an upper spring seat 4, a lower spring seat 2 and a spring 3, wherein the upper spring seat 4 is arranged below the valve clack 7, and the upper spring seat 4 is fixed in an axial containing space of the valve cover 1 through a bolt to play a limiting role. The upper spring seat 4 is provided with a central through hole. The lower spring seat 2 is arranged in the axial accommodating space of the valve cover 1, and the upper end of the lower spring seat 2 penetrates through the central through hole of the upper spring seat 4 to be coaxially connected with the valve clack 7. The spring 3 is sleeved on the outer wall of the lower spring seat 2 and is positioned between the upper spring seat 4 and the lower spring seat 2. The gas in the pipeline of the press enters from the gas inlet 101 of the valve cover 1, the spring 3 is elastically deformed by the gas pressure, and the lower spring seat 2 moves upwards and jacks up the valve clack 7, so that the first gas outlet 201 is opened.

Spring 3 sets up between upper spring seat 4, lower spring seat 2 in elastic component, plays the effect of buffering, can effectually alleviate the violent vibrations of relief valve case and spring 3 in the off-load in-process, leads to the problem of spring 3 fracture inefficacy.

In the above embodiment, all the materials of the valve body 5, the valve flap 7, the spring assembly, and the like are 316 stainless steel. The high-temperature-resistant and corrosion-resistant cable has the advantages of corrosion resistance, high temperature resistance, high pressure resistance, stable performance and the like, and is suitable for embedded installation environments.

In other preferred embodiments, the lower end of the valve flap 7 is provided with a through hole for receiving the lower spring seat 2, and the upper end of the lower spring seat 2 is inserted into the through hole of the valve flap 7, so that the valve flap 7 is connected with the lower spring seat 2.

In other preferred embodiments, the in-line safety valve further comprises a pressure regulating screw 8, and the pressure regulating screw 8 penetrates into the lower spring seat from a central through hole of the valve clack 7 and is used for regulating pressure.

In other preferred embodiments, the valve flap 7 is provided with a valve flap cap 9, and the valve flap cap 9 is arranged above the pressure regulating screw 8. The valve clack cap 9 can play a role in two sealing; meanwhile, the opening height of the valve clack 7 can be limited, and the spring 3 is protected.

In other preferred embodiments, a Polytetrafluoroethylene (PTFE) seal 6 is disposed at the connection between the valve flap 7 and the first air outlet 201 for sealing. The polytetrafluoroethylene sealing gasket 6 has the advantages of corrosion resistance, high temperature resistance, high pressure resistance, stable performance, zero sealing leakage and the like.

In other partially preferred embodiments, the number of air inlets 101 is 4; the 4 air inlets 101 are evenly distributed along the outer wall of the valve cover 1.

In other partially preferred embodiments, the number of second air outlets 202 is 4; the 4 second air outlets 202 are evenly distributed along the center of the cover plate 10.

In other partially preferred embodiments, the number of mounting holes 11 is 8.

The working process of the built-in safety valve is as follows: when the gas pressure in the pipeline of the air compressor exceeds a set value, the gas pressure is greater than the pressure of the spring 3, the safety valve is in an open state at the moment, gas enters from the four gas inlets 101 on the side surface of the valve cover 1, so that the valve clack 7 is jacked up, the first gas outlet 201 is opened, and the gas is released to the atmosphere from the second gas outlet 202 of the cover plate 10; when the gas pressure in the pipeline of the air compressor is smaller than a set value, the pressure of the spring 3 is larger than the gas pressure, the valve clack 7 is closed, and the safety valve is in a closed state.

All the parts used in this document can be standard parts or common technologies, if not detailed, and can be purchased from the market, the specific connection mode of each part can be conventional means such as bolts, rivets and welding, etc., which are mature in the prior art, the machinery, parts and electrical equipment are conventional models in the prior art, and the circuit connection is conventional in the prior art, which is easy to be realized by those skilled in the art, and no specific description is given here.

The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention.

Claims

1. An in-line safety valve, comprising:

2. The in-line safety valve according to claim 1, wherein the lower end of the valve flap is provided with a through hole for receiving the lower spring seat, and the upper end of the lower spring seat is inserted into the through hole of the valve flap to connect the valve flap and the lower spring seat.

3. The in-line safety valve according to claim 1, further comprising a pressure adjusting screw for adjusting pressure, wherein the pressure adjusting screw is inserted into the lower spring seat through the central through hole of the valve flap.

4. The in-line safety valve according to claim 3, wherein a valve flap cap is arranged on the valve flap, and the valve flap cap is arranged above the pressure regulating screw.

5. The in-line safety valve according to claim 1, wherein a polytetrafluoroethylene gasket is provided at a connection between the valve flap and the first air outlet for sealing.

6. The in-line safety valve of any one of claims 1-5, wherein the number of gas inlets is 4.

7. The in-line safety valve according to any one of claims 1-5, wherein the number of the second gas outlets is 4.

8. The in-line safety valve according to any one of claims 1-5, wherein the number of mounting holes is 8.

9. The in-line safety valve according to any one of claims 1-5, wherein the cover plate is bolted to the circular end plate.

10. The in-line safety valve according to any one of claims 1 to 5, wherein the bonnet is bolted to the valve body.