CN209876063U - High-precision gas safety valve - Google Patents
High-precision gas safety valve Download PDFInfo
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- CN209876063U CN209876063U CN201920789005.5U CN201920789005U CN209876063U CN 209876063 U CN209876063 U CN 209876063U CN 201920789005 U CN201920789005 U CN 201920789005U CN 209876063 U CN209876063 U CN 209876063U
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- diaphragm
- safety valve
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- spring
- sealing
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Abstract
The utility model provides a high accuracy gas safety valve, including valve body and spring housing, be equipped with spring unit in the spring housing, spring unit and diaphragm contact, the outside of diaphragm is fixed to be set up, forms the cavity in the valve body, is equipped with the sealing member in the cavity, be equipped with on the valve body with the import of cavity intercommunication, be equipped with the export on the sealing member, the sealed cooperation in the exit of diaphragm and sealing member. The utility model has the advantages that: the structure of the pressure reducing valve is combined, the air inlet pressure acts on the diaphragm, and the precision of the safety valve is improved; the edge part of the diaphragm is designed into a special-shaped structure, so that the stress of the diaphragm is reduced, and the precision of the product is improved; the nonmetal support ring is added on the sealing block framework, so that the friction force between the sealing block framework and the spring housing is reduced, and the service life of the safety valve can be prolonged.
Description
Technical Field
The utility model relates to a relief valve especially indicates a high accuracy gas safety valve.
Background
The safety valve is a special valve, the air pressure of the traditional safety valve directly acts on a sealing surface, the pressure on the sealing surface is transmitted to a spring through a valve, the safety valve is opened to release air when the pressure is increased, and the spring returns to play a sealing role when the pressure is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a high accuracy gas safety valve has solved the not high problem of current relief valve precision.
The technical scheme of the utility model is realized like this: the utility model provides a high accuracy gas safety valve, includes valve body and spring housing, is equipped with spring unit in the spring housing, spring unit and diaphragm contact, the outside of diaphragm is fixed to be set up, forms the cavity in the valve body, is equipped with the sealing member in the cavity, be equipped with the import with the cavity intercommunication on the valve body, be equipped with the export on the sealing member, the sealed cooperation in the exit of diaphragm and sealing member.
The spring assembly comprises an adjusting screw connected to the upper end of the spring housing, the adjusting screw is in contact with the upper spring seat, a spring is arranged between the upper spring seat and the lower spring seat, the lower spring seat is located in the sealing block framework, the lower spring seat is in contact with the sealing block framework, and the sealing block framework is in contact with the diaphragm.
The lower part of the lower spring seat is provided with a ball part, and the sealing block framework is provided with a groove matched with the ball part.
The sealing block framework is provided with a support ring, and the support ring is matched with the spring housing.
And the adjusting screw is provided with a locking nut.
A limiting ring is arranged between the valve body and the spring housing, and the outer side of the diaphragm is arranged between the limiting ring and the valve body.
The diaphragm comprises an integrated fixed outer ring, a special-shaped middle ring and a sealing inner disc, the fixed outer ring is fixedly arranged, and the sealing inner disc is in sealing fit with the outlet of the sealing element.
The inlet is positioned at the side part of the valve body, and the outlet is positioned at the center of the valve body.
The valve body is connected with the spring housing through the elastic pad, the connecting screw and the flat washer.
An O-shaped ring I is arranged between the sealing element and the valve body.
The advantages of the utility model
The safety valve structure: the safety valve is combined with a structure of a pressure reducing valve, air enters from a position beside the center of an air inlet of the safety valve, pressure acts on the diaphragm, force is transmitted to the spring through the diaphragm, when the pressure reaches the pre-tightening force of the spring, the safety valve is opened to release air, because the area of the diaphragm is large, the force change generated when the pressure changes is obvious, and meanwhile, the deformation of the spring is very sensitive, so that the precision of the safety valve is improved, the relation between the precision of the safety valve and the size of the diaphragm and the precision of the diaphragm is established, and when the diaphragm is large, the precision of the safety valve is high.
Diaphragm: the diaphragm is a very key part in the safety valve, the safety valve can play a role in improving the precision through the diaphragm, the structure of the diaphragm is very key due to the fact that the precision required by the outlet pressure of the safety valve is very high, the edge part of the diaphragm is designed into a special-shaped structure through product analysis, and the structure is characterized in that the stress of the diaphragm is very small, and the precision of the product is improved.
Wear resistance: the safety valve has the advantages that the required precision is high, according to the product characteristics and the overall design idea, in order to reduce the friction force of the safety valve, the nonmetal support ring is added on the sealing block framework, the friction force between the sealing block framework and the spring housing is guaranteed to be very low, and meanwhile, the service life of the safety valve can be prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of the internal structure of the present invention.
Fig. 2 is a schematic diagram of the external structure of the present invention.
Fig. 3 is a schematic view of the membrane structure of the present invention.
In the figure: 1-a valve body, 2-a spring housing, 3-a sealing block framework, 4-a diaphragm, 5-a lower spring seat, 6-an upper spring seat, 7-a limiting ring, 8-a supporting ring, 9-a spring, 10-a sealing element, 11-an elastic cushion, 12-a connecting screw, 13-a flat gasket, 14-an adjusting screw, 15-a cylindrical pin, 16-a locking nut, 17-an O-shaped ring I and 18-an O-shaped ring II.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.
As shown in fig. 1 to 3, a high-precision gas safety valve comprises a valve body 1 and a spring housing 2, wherein the valve body 1 is connected with the spring housing 2 through an elastic gasket 11, a connecting screw 12 and a flat washer 13, the valve body 1 is arranged on a tool through a cylindrical pin 15, and an O-shaped ring II18 in sealing fit with the tool is arranged on the valve body 1.
Be equipped with spring unit in the spring housing 2, spring unit includes adjusting screw 14, adjusting screw 14 connects the upper end at spring housing 2, and be equipped with lock nut 16 on adjusting screw 14, a be used for locking adjusting screw 14 on spring housing 2, adjusting screw 14 and the contact of last spring holder 6, it is equipped with spring 9 to go up between spring holder 6 and the lower spring holder 5, lower spring holder 5 is located sealed piece skeleton 3, the lower part of lower spring holder 5 is equipped with the bulb, be equipped with on the sealed piece skeleton 3 with bulb complex groove, be equipped with support ring 8 on the sealed piece skeleton 3, support ring 8 and the cooperation of spring housing 2, sealed piece skeleton 3 and the contact of diaphragm 4 down.
The diaphragm 4 comprises an integrated fixed outer ring, a special-shaped middle ring and a sealing inner disc, the fixed outer ring is tightly pressed between the limiting ring 7 and the valve body 1, and the limiting ring 7 is tightly pressed between the valve body 1 and the spring housing 2. The cavity is formed in the valve body 1, the sealing element 10 located at the center of the valve body 1 is arranged in the cavity, the O-shaped ring I17 is arranged between the sealing element 10 and the valve body 1, the valve body 1 is provided with an inlet communicated with the cavity, the inlet is located on the side portion of the valve body 1, the center of the sealing element 10 is provided with an outlet, and the sealing inner disc is in sealing fit with the outlet of the sealing element 10.
The working principle of the utility model
The safety valve is characterized in that the spring loading force is manually adjusted, the upper spring seat compresses the spring, force is generated and acts on the diaphragm through the lower spring seat and the sealing block framework, the sealing part of the diaphragm is sealed with the sealing part of the valve body, meanwhile, the inlet pressure acts on the diaphragm, when the gas pressure is greater than the spring pressure, the valve of the safety valve is opened to release gas, when the inlet pressure is reduced, the spring force pushes the diaphragm, the sealing part is sealed, and the gas stops being discharged.
The utility model has the characteristics that: the connection mode adopts plate connection, so that the installation and the maintenance are easy, and the performance of other parts cannot be influenced during the maintenance; the nonmetal support ring is added on the sealing block framework, so that the friction force between the sealing block framework and the spring housing is very low, and the service life of the safety valve can be prolonged; the limiting ring ensures the coaxiality requirement of the spring cover and the valve body, and simultaneously plays a limiting role in the framework of the sealing block, so that the compression amount of the sealing surface is ensured to be within a design range; the lower part of the lower spring seat is designed to be spherical, so that the spring force is ensured to act on the central part of the framework of the sealing block, and the uniform stress of the sealing surface is ensured; the cylindrical pin is an essential part for installing the safety valve, so that the correct installation position of the safety valve is ensured; the valve body sealing piece is an independently designed part which has the characteristics of small volume, easy processing, easy replacement, low cost and the like.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a high accuracy gas safety valve, includes valve body (1) and spring housing (2), is equipped with spring unit, its characterized in that in spring housing (2): spring unit and diaphragm (4) contact, the outside of diaphragm (4) is fixed to be set up, forms the cavity in valve body (1), is equipped with sealing member (10) in the cavity, be equipped with the import with the cavity intercommunication on valve body (1), be equipped with the export on sealing member (10), the sealed cooperation in exit of diaphragm (4) and sealing member (10).
2. The high precision gas safety valve of claim 1, wherein: the spring assembly comprises an adjusting screw (14), the adjusting screw (14) is connected to the upper end of the spring housing (2), the adjusting screw (14) is in contact with the upper spring seat (6), a spring (9) is arranged between the upper spring seat (6) and the lower spring seat (5), the lower spring seat (5) is located in the sealing block framework (3), the lower spring seat (5) is in contact with the sealing block framework (3), and the sealing block framework (3) is in contact with the diaphragm (4).
3. The high precision gas safety valve of claim 2, wherein: the lower part of the lower spring seat (5) is provided with a ball part, and the sealing block framework (3) is provided with a groove matched with the ball part.
4. The high precision gas safety valve of claim 2, wherein: the sealing block framework (3) is provided with a support ring (8), and the support ring (8) is matched with the spring housing (2).
5. The high precision gas safety valve of claim 2, wherein: and a locking nut (16) is arranged on the adjusting screw (14).
6. The high precision gas safety valve of claim 1, wherein: a limiting ring (7) is arranged between the valve body (1) and the spring housing (2), and the outer side of the diaphragm (4) is arranged between the limiting ring (7) and the valve body (1).
7. The high-precision gas safety valve according to claim 1 or 6, characterized in that: the diaphragm (4) comprises an integrated fixed outer ring, a special-shaped middle ring and a sealing inner disc, the fixed outer ring is fixedly arranged, and the sealing inner disc is in sealing fit with an outlet of the sealing element (10).
8. The high precision gas safety valve of claim 1, wherein: the inlet is positioned at the side part of the valve body (1), and the outlet is positioned at the center of the valve body (1).
9. The high precision gas safety valve of claim 1, wherein: the valve body (1) is connected with the spring housing (2) through an elastic cushion (11), a connecting screw (12) and a flat washer (13).
10. The high precision gas safety valve of claim 1, wherein: an O-shaped ring I (17) is arranged between the sealing element (10) and the valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920789005.5U CN209876063U (en) | 2019-05-29 | 2019-05-29 | High-precision gas safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920789005.5U CN209876063U (en) | 2019-05-29 | 2019-05-29 | High-precision gas safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209876063U true CN209876063U (en) | 2019-12-31 |
Family
ID=68948008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920789005.5U Active CN209876063U (en) | 2019-05-29 | 2019-05-29 | High-precision gas safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209876063U (en) |
-
2019
- 2019-05-29 CN CN201920789005.5U patent/CN209876063U/en active Active
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| GR01 | Patent grant |