CN215172548U - Adjustable back pressure relief valve - Google Patents
Adjustable back pressure relief valve Download PDFInfo
- Publication number
- CN215172548U CN215172548U CN202121338057.4U CN202121338057U CN215172548U CN 215172548 U CN215172548 U CN 215172548U CN 202121338057 U CN202121338057 U CN 202121338057U CN 215172548 U CN215172548 U CN 215172548U
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- valve
- seat
- spring
- clack
- back pressure
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Abstract
The utility model relates to an adjustable back pressure relief valve. The problem that the safety valve is poor in working stability is mainly solved. The method is characterized in that: valve body (1) top female connection has regulation seat (6), be equipped with centre bore (7) on regulation seat (6), the one end of spring (4) is connected and is being adjusted seat (6) lower extreme, and the other end of spring (4) is connected on spring holder (8), the upper portion of spring holder (8) is equipped with guide arm (9), insert in centre bore (7) guide arm (9), be slidable clearance fit between guide arm (9) and centre bore (7), the lower extreme and valve clack (3) of spring holder (6) are inconsistent. The utility model has the advantages that the spring seat is guided by the adjusting seat, the spring seat can be prevented from deviating, the stress point of the valve clack is always in the central position, and the working stability of the safety valve is improved; when the safety valve is in a closed state, the valve clack has even pressure on the valve seat, the sealing performance is improved, and the sealing effect is good.
Description
Technical Field
The utility model relates to a valve, concretely relates to adjustable back pressure relief valve.
Background
The safety valve is mainly used to control the internal pressure of boiler, pressure container and pipeline not to exceed the specified value so as to prevent the equipment from being damaged or injuring people due to over-high pressure. The safety valve comprises a valve body, a valve seat, a valve clack, a spring and a valve bonnet, wherein the valve clack is arranged in the valve body and corresponds to the valve seat, the spring is positioned between the valve bonnet and the valve clack, and the safety valve has the following technical defects when in use: 1. the opening height of the valve is not limited, so that the valve clack of the safety valve moves back and forth rapidly and abnormally to generate frequency jump; 2. the safety valve is characterized in that a guide device is not arranged between the valve cap and the valve clack, the spring is directly abutted against the valve clack, the spring is usually a spiral spring, and the stability of the spring during working is poor, so that the stress of the valve clack is uneven, the pressure of the valve clack on the valve seat is uneven, and the safety valve is not tightly sealed in a closed state; 3. the valve cap is connected with the valve body through threads, and an O-shaped ring is adopted to seal the threads, so that leakage is easy to occur, and the sealing effect is poor; 4. the working pressure of the safety valve is adjusted by screwing the valve cap in and out, the valve cap is locked by the valve cap, and the action performance of the safety valve cannot be ensured without an independent adjusting seat.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that current relief valve easily produces unusual frequency hopping, job stabilization nature is relatively poor and sealed effect is poor, the utility model provides an adjustable back pressure relief valve, this adjustable back pressure relief valve have mainly solved the relatively poor problem of relief valve job stabilization nature, have also solved unusual frequency hopping, sealed poor problem of effect simultaneously.
The technical scheme of the utility model is that: the utility model provides an adjustable back pressure relief valve, includes valve body, disk seat, valve clack, spring and valve cap, and the valve clack is installed in the valve body and corresponding with the disk seat, valve body top female connection has the regulation seat, be equipped with the centre bore on the regulation seat, the one end of spring is connected at regulation seat lower extreme, and the other end of spring is connected on the spring holder, the upper portion of spring holder is equipped with the guide arm, the guide arm is inserted in the centre bore, is slidable clearance fit between guide arm and the centre bore, the lower extreme and the valve clack of spring holder are inconsistent.
The inner hole of the valve clack is a stepped hole, a shaft shoulder is arranged on the outer wall of the valve clack, and the shaft shoulder can be clamped on a step of the stepped hole.
The upper end of valve clack is equipped with the accommodation hole, and the spring holder is located the accommodation hole.
The lower end of the spring seat is conical, a positioning hole is formed in the center of the bottom of the accommodating hole, and the lower end of the spring seat is located in the positioning hole.
Threaded connection between valve cap and the regulation seat, be equipped with sealed the pad between the up end of the lower terminal surface of valve cap and valve body.
The utility model discloses following beneficial effect has: by adopting the technical scheme, the spring seat is guided by the adjusting seat, the spring seat can be effectively prevented from deviating, the stress point of the valve clack is always in the central position, and the working stability of the safety valve is improved; when the safety valve is in a closed state, the valve clack has even pressure on the valve seat, the sealing performance is improved, and the sealing effect is good.
Drawings
Fig. 1 is a structural sectional view of the present invention.
In the figure, 1-valve body, 2-valve seat, 3-valve clack, 4-spring, 5-valve cap, 6-adjusting seat, 7-center hole, 8-spring seat, 9-guide rod, 10-shaft shoulder, 11-step, 12-accommodating hole, 13-positioning hole and 14-sealing gasket.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
shown by figure 1, an adjustable back pressure relief valve, includes valve body 1, disk seat 2, valve clack 3, spring 4 and valve cap 5, and valve clack 3 is installed in valve body 1 and corresponding with disk seat 2, 1 top female connection of valve body has regulation seat 6, be equipped with centre bore 7 on the regulation seat 6, the one end of spring 4 is connected at 6 lower extremes of regulation seat, and the other end of spring 4 is connected on spring holder 8, the upper portion of spring holder 8 is equipped with guide arm 9, guide arm 9 is inserted in centre bore 7, is slidable clearance fit between guide arm 9 and the centre bore 7, the lower extreme and the valve clack 3 of spring holder 6 are inconsistent. By adopting the technical scheme, the spring seat 8 is guided by the adjusting seat 6, so that the spring seat 6 can be effectively prevented from deviating, the stress point of the valve clack 3 is always in the central position, and the working stability of the safety valve is improved; when the safety valve is in a closed state, the valve clack 3 has even pressure on the valve seat 2, the sealing performance is improved, and the sealing effect is good.
The inner hole of the valve clack 3 mounted on the valve body 1 is a stepped hole, a shaft shoulder 10 is arranged on the outer wall of the valve clack 3, and the shaft shoulder 10 can be clamped on a step 11 of the stepped hole. The step 11 can limit the upward movement of the valve clack 3, the maximum opening height of the valve can be effectively controlled, and the valve clack 3 of the safety valve is prevented from rapidly and abnormally moving back and forth to generate frequency jump.
The upper end of the valve clack 3 is provided with a receiving hole 12, and the spring seat 8 is positioned in the receiving hole 12. The structure of the valve is more compact, and the overall dimension of the valve is reduced.
The lower end of the spring seat 8 is conical, a positioning hole 13 is formed in the center of the bottom of the accommodating hole 12, and the lower end of the spring seat 8 is located in the positioning hole 13. The positioning hole 13 limits the spring seat 8 so that the acting force of the spring 4 is kept at the central position of the valve clack 3.
Threaded connection between valve cap 5 and the regulation seat 6, be equipped with sealed 14 between the lower terminal surface of valve cap 5 and the up end of valve body 1. The sealing gasket 14 is adopted for sealing, the sealing performance is obviously superior to that of an O-shaped ring in the prior art for thread sealing, and the sealing gasket 14 is made of PTFE materials, so that a better sealing effect can be achieved. The adjusting seat 6 has the following functions: 1. as the connecting end of the spring 4; 2. the pressure of the valve can be adjusted; 3. and plays a role in guiding the spring seat 8.
Claims (5)
1. The utility model provides an adjustable back pressure relief valve, includes valve body (1), disk seat (2), valve clack (3), spring (4) and valve cap (5), and valve clack (3) are installed in valve body (1) and corresponding its characterized in that with disk seat (2): valve body (1) top female connection has regulation seat (6), be equipped with centre bore (7) on regulation seat (6), the one end of spring (4) is connected and is being adjusted seat (6) lower extreme, and the other end of spring (4) is connected on spring holder (8), the upper portion of spring holder (8) is equipped with guide arm (9), insert in centre bore (7) guide arm (9), be slidable clearance fit between guide arm (9) and centre bore (7), the lower extreme and valve clack (3) of spring holder (8) are inconsistent.
2. The adjustable back pressure relief valve of claim 1, wherein: the inner hole of the valve clack (3) installed on the valve body (1) is a stepped hole, a shaft shoulder (10) is arranged on the outer wall of the valve clack (3), and the shaft shoulder (10) can be clamped on a step (11) of the stepped hole.
3. The adjustable back pressure relief valve of claim 1 or 2, wherein: the upper end of the valve clack (3) is provided with a containing hole (12), and the spring seat (8) is located in the containing hole (12).
4. The adjustable back pressure relief valve of claim 3, wherein: the lower end of the spring seat (8) is conical, a positioning hole (13) is formed in the center of the bottom of the accommodating hole (12), and the lower end of the spring seat (8) is located in the positioning hole (13).
5. The adjustable back pressure relief valve of claim 1 or 2, wherein: threaded connection between valve cap (5) and regulation seat (6), be equipped with sealed pad (14) between the lower terminal surface of valve cap (5) and the up end of valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121338057.4U CN215172548U (en) | 2021-06-16 | 2021-06-16 | Adjustable back pressure relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121338057.4U CN215172548U (en) | 2021-06-16 | 2021-06-16 | Adjustable back pressure relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215172548U true CN215172548U (en) | 2021-12-14 |
Family
ID=79386676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121338057.4U Active CN215172548U (en) | 2021-06-16 | 2021-06-16 | Adjustable back pressure relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215172548U (en) |
-
2021
- 2021-06-16 CN CN202121338057.4U patent/CN215172548U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |