CN112747150A - 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
- Publication number
- CN112747150A CN112747150A CN202110222082.4A CN202110222082A CN112747150A CN 112747150 A CN112747150 A CN 112747150A CN 202110222082 A CN202110222082 A CN 202110222082A CN 112747150 A CN112747150 A CN 112747150A
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- China
- Prior art keywords
- valve
- cage
- guide
- clack
- valve body
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/04—Check valves with guided rigid valve members shaped as balls
- F16K15/044—Check valves with guided rigid valve members shaped as balls spring-loaded
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0245—Construction of housing; Use of materials therefor of lift valves with ball-shaped valve members
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
The invention discloses a low-pressure air-tight sealing ball valve clack lifting check valve with a guide cage, which comprises a valve body, a valve cover, a gasket, a fastener, a spring and a ball valve clack, wherein the sealing surface of the valve body is an inclined plane, the upper port of the valve body is internally provided with the guide cage, the contact part of the valve body and the lower end of the guide cage is provided with a positioning boss, the circumferential surface of the guide cage is uniformly provided with drainage holes, a guide seat is arranged in the guide cage, the upper end surface of the guide seat and the lower end surface of the valve cover are respectively provided with a positioning groove for placing the spring, the lower end surface of the guide seat is provided with an inner groove for accommodating the ball valve clack, and the ball valve clack is contacted with the sealing.
Description
Technical Field
The invention relates to a low-pressure air-tight sealing ball valve clack lifting check valve with a guide 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.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides a low-pressure air-tight sealing ball valve clack lifting check valve with a guide cage.
The invention adopts the technical scheme that the low-pressure air-tight sealing spherical valve clack lifting check valve with the guide cage comprises a valve body, a valve cover, a gasket, a fastener, a spring and a spherical valve clack, wherein the sealing surface of the valve body is an inclined surface, the guide cage is arranged in an upper port of the valve body, a positioning boss is arranged at the contact part of the valve body and the lower end of the guide cage, drainage holes are uniformly distributed on the circumferential surface of the guide cage, a guide seat is arranged in the guide cage, positioning grooves for placing the spring are respectively arranged on the upper end surface of the guide seat and the lower end surface of the valve cover, an inner groove for accommodating the spherical valve clack is arranged on the lower end surface of the guide seat, a cavity formed by the guide cage, the spherical valve clack and the.
Preferably, the bottom of the inner tank is planar.
Preferably, the diameter of the drainage hole is 2.0 mm-6.0 mm.
The invention has the beneficial effect that the linear seal formed by the spherical valve clack and the inclined plane of the valve body avoids the possibility of valve leakage caused by processing errors of two structures, namely a plane seal structure and a conical seal structure. 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 view 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, 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 of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law 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.
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 flat.
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 |
|---|---|---|---|
| CN202110222082.4A CN112747150A (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 |
|---|---|---|---|
| CN202110222082.4A CN112747150A (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 |
|---|---|
| CN112747150A true CN112747150A (en) | 2021-05-04 |
Family
ID=75651570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110222082.4A Pending CN112747150A (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) | CN112747150A (en) |
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2021
- 2021-02-28 CN CN202110222082.4A patent/CN112747150A/en active Pending
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