CN214579087U - Low-pressure air-tight sealing spherical valve clack lifting check valve with guide cage - Google Patents
Low-pressure air-tight sealing spherical valve clack lifting check valve with guide cage Download PDFInfo
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- CN214579087U CN214579087U CN202120430178.5U CN202120430178U CN214579087U CN 214579087 U CN214579087 U CN 214579087U CN 202120430178 U CN202120430178 U CN 202120430178U CN 214579087 U CN214579087 U CN 214579087U
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Abstract
The utility model provides a take low pressure gas sealing ball valve clack over-and-under type check valve of direction cage, which comprises a valve body, the valve gap, the gasket, the fastener, a spring, ball valve clack, the sealed face of valve body is the inclined plane, be equipped with the direction cage in the up end of valve body, the valve body is equipped with the location boss with direction cage lower extreme contact department, equipartition drainage hole on the periphery of direction cage, be equipped with the guide holder in the direction cage, the up end of guide holder and the lower terminal surface of valve gap are equipped with the positioning groove who places the spring respectively, the lower terminal surface of guide holder is equipped with the inside groove that holds ball valve clack, ball valve clack forms the line seal with the sealed face contact of valve body, the beneficial effects of the utility model are that, the possibility that two kinds of structures of plane seal and conical surface seal arouse the valve leakage because of machining error has been avoided.
Description
Technical Field
The utility model relates to a take low pressure gas seal ball valve clack over-and-under type check valve of direction cage.
Background
Modern process working conditions generally adopt a lifting check valve as an important element for protecting and manufacturing equipment, while a process system mostly adopts a gas medium, the valve can be sealed when the back pressure of the valve is required to be 0.6MPa, but the existing lifting check valve generally adopts plane sealing or conical surface sealing. When the valve is required to realize low-pressure air sealing in a plane sealing structure, extremely high requirements are provided for the flatness and the roughness of a sealing surface and the perpendicularity of the sealing surface and a valve clack, and the air sealing is difficult to realize if the elements slightly deviate; and for the goodness of fit of the sealing surface of the conical surface sealing surface structure, the form and position tolerance of the sealing surface and the valve clack generates a little deviation due to processing, and then air sealing can not be realized.
SUMMERY OF THE UTILITY MODEL
In order to solve the prior art not enough, the utility model provides a take airtight ball valve clack over-and-under type check valve of low pressure of direction cage.
The technical scheme of the utility model is, a take low pressure gas seal ball valve clack over-and-under type check valve of direction cage, which comprises a valve body, the valve gap, the gasket, the fastener, a spring, the ball valve clack, the sealed face of valve body is the inclined plane, be equipped with the direction cage in the up end of valve body, the valve body is equipped with the location boss with direction cage lower extreme contact department, equipartition drainage hole on the periphery of direction cage, be equipped with the guide holder in the direction cage, the up end of guide holder and the lower terminal surface of valve gap are equipped with the positioning groove who places the spring respectively, the lower terminal surface of guide holder is equipped with the inside groove that holds the ball valve clack, the direction cage, the cavity that ball valve clack and guide holder are constituteed has 0.5mm ~1.0mm clearance, the sealed face contact formation line of ball valve clack and valve body is sealed.
Preferably, the bottom of the inner tank is planar.
Preferably, the diameter of the drainage hole is 2.0 mm-6.0 mm.
The beneficial effects of the utility model are that, the line seal that spherical valve clack and valve body inclined plane are constituteed has avoided two kinds of structures of plane seal and conical surface seal to arouse the possibility that the valve leaked because of machining error. The spherical valve clack can move freely in the cavity, and when a medium flows reversely, the spherical valve clack can obtain a new sealing surface, so that the spherical valve clack has a self-centering function, and the sealing performance and the service life of the valve are improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is an enlarged view of a portion A of FIG. 1;
FIG. 3 is a schematic structural view of the guide shoe;
fig. 4 is a schematic structural view of a guide cage.
In the figure: 1. a valve body; 2. a valve cover; 3. a gasket; 4. a fastener; 5. a spring; 6. a guide seat; 7. a spherical valve flap; 8. a guide cage; 9. positioning the boss; 10. wire sealing; 11. a positioning groove; 12. an inner tank; 13. and (4) drainage holes.
Detailed Description
As shown in the figure, the low-pressure air-tight sealing ball valve clack lifting check valve with the guide cage comprises a valve body 1, a valve cover 2, a gasket 3, a fastener 4, a spring 5 and a ball valve clack 7, wherein the sealing surface of the valve body 1 is an inclined surface, a guide cage 8 is arranged in the upper port of the valve body 1, a positioning boss 9 is arranged at the contact part of the valve body 1 and the lower end of the guide cage 8 for ensuring the stability of the guide cage 8, drainage holes 13 are uniformly distributed on the circumferential surface of the guide cage 8, the diameter of each drainage hole 13 is 2.0 mm-6.0 mm for guiding a countercurrent medium so as to provide medium pressure for sealing backpressure, the wire seal is ensured to have enough sealing specific pressure, a guide seat 6 is arranged in the guide cage 8, positioning grooves 11 for placing the spring 5 are respectively arranged on the upper end surface of the guide seat 6 and the lower end surface of the valve cover 2, and the possibility of failure caused by the torsion deformation of the spring 5 in the transverse direction is avoided when the medium is changed in the forward and reverse directions, the stability of spring 5 has been guaranteed, the life of spring 5 has been prolonged, the lower terminal surface of guide holder 6 is equipped with the inside groove 12 that holds spherical valve clack 7, the bottom of inside groove 12 is the plane, direction cage 8, the cavity that spherical valve clack 7 and guide holder 6 are constituteed has 0.5mm ~1.0mm clearance, spherical valve clack 7 just can be free motion in its cavity, can make spherical valve clack 7 obtain a new sealed face when the medium flows against the current, possess the function of automatic centering, thereby the sealing performance and the life of valve have been improved, spherical valve clack 7 forms line seal 10 with the sealed face contact of valve body 1, thereby the possibility that plane seal and the sealed two kinds of structures of conical surface arouse the valve to leak because of the machining error has been avoided.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Claims (3)
1. The utility model provides a take low pressure gas-tight spherical valve clack over-and-under type check valve of direction cage, includes valve body, valve gap, gasket, fastener, spring, spherical valve clack, its characterized in that, the sealed face of valve body is the inclined plane, is equipped with the direction cage in the last port of valve body, and the valve body is equipped with the location boss with direction cage lower extreme contact department, equipartition drainage hole on the periphery of direction cage is equipped with the guide holder in the direction cage, the up end of guide holder and the lower terminal surface of valve gap are equipped with the positioning groove who places the spring respectively, the lower terminal surface of guide holder is equipped with the inside groove that holds spherical valve clack, the cavity that direction cage, spherical valve clack and guide holder are constituteed has 0.5mm ~1.0mm clearance, spherical valve clack and the sealed face contact formation line of valve body are sealed.
2. The low pressure hermetically sealed globe valve flap lift check valve with guide cage of claim 1, wherein the bottom of the inner tank is planar.
3. The low-pressure air-tight spherical valve flap lift check valve with the guide cage as claimed in claim 2, wherein the diameter of the drainage hole is 2.0 mm-6.0 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120430178.5U CN214579087U (en) | 2021-02-28 | 2021-02-28 | Low-pressure air-tight sealing spherical valve clack lifting check valve with guide cage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120430178.5U CN214579087U (en) | 2021-02-28 | 2021-02-28 | Low-pressure air-tight sealing spherical valve clack lifting check valve with guide cage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214579087U true CN214579087U (en) | 2021-11-02 |
Family
ID=78317171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120430178.5U Active CN214579087U (en) | 2021-02-28 | 2021-02-28 | Low-pressure air-tight sealing spherical valve clack lifting check valve with guide cage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214579087U (en) |
-
2021
- 2021-02-28 CN CN202120430178.5U patent/CN214579087U/en active Active
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