CN213271104U - Two-stage metal hard sealing ball valve - Google Patents
Two-stage metal hard sealing ball valve Download PDFInfo
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- CN213271104U CN213271104U CN202021730031.XU CN202021730031U CN213271104U CN 213271104 U CN213271104 U CN 213271104U CN 202021730031 U CN202021730031 U CN 202021730031U CN 213271104 U CN213271104 U CN 213271104U
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Abstract
The utility model provides a doublestage metal ball valve sealed firmly, which comprises a valve body, sealed disk seat gasket, the spheroid, support the disk seat, the valve rod, the extrusion ring is prevented to the front end, support the disk seat sealing washer, the extrusion ring is prevented to the rear end, the clamping ring, belleville spring, support the cover, the valve body support, the valve body screw, the valve rod penetrates valve body and spheroid mechanical bonding, spheroid and sealed disk seat, support the disk seat design and process into the sphere cooperation, it is equipped with belleville spring to support between disk seat and valve body, belleville spring is sticising the support disk seat, make sealed disk seat, support disk seat and spheroid. The supporting valve seat, the front-end anti-extrusion ring, the supporting valve seat sealing ring, the rear-end anti-extrusion ring and the inner hole surface of the valve body of the two-stage metal hard sealing ball valve form a valve body-supporting valve seat sealing pair, the supporting valve seat is attached to the surface of a ball body to form a ball body-supporting valve seat sealing pair, and the two-stage sealing enables the valve to have more reliable sealing performance and is particularly suitable for harsh working conditions requiring ultra-tight sealing.
Description
Technical Field
The utility model relates to a ball valve technical field especially relates to a doublestage metal ball valve that seals firmly.
Background
The conventional metal hard sealing ball valve (fig. 2) generally comprises a valve body, a sealing valve seat gasket, a ball, a supporting valve seat, a valve rod, a front-end anti-extrusion ring, a supporting valve seat sealing ring, a rear-end anti-extrusion ring, a pressing ring, a disc spring, a supporting sleeve, a valve body support and a valve body screw, wherein the valve rod is mechanically combined with the ball, the sealing element is the ball and the valve seat, the ball is matched with the valve seat in a spherical surface, and the ball is tightly attached to the valve seat by the elasticity of the disc spring. The ball body can rotate 90 degrees in the valve body by taking the valve rod as a rotating shaft so as to open and close a channel of the valve body (pipeline) and achieve the function of opening and cutting off a channel medium. The sealing valve seat of the conventional metal hard sealing ball valve is tightly attached to the valve body to form a sealing valve seat-valve body sealing pair. The sealing surface of the sealing valve seat is tightly attached to the ball body to form a sealing valve seat-ball body sealing pair. The sealing valve seat-valve body sealing pair and the sealing valve seat-ball body sealing pair jointly form a sealing factor of the conventional metal hard sealing ball valve. When any one of the sealing valve seat-auxiliary valve body sealing pair and the sealing valve seat-ball sealing pair of the conventional metal hard sealing ball valve (figure 2) leaks, the valve leaks. The existing ball valve has the defect that the existing ball valve cannot adapt to the medium working condition requiring high-reliability sealing.
Disclosure of Invention
The utility model aims at solving the defects existing in the prior art and providing a double-stage metal hard sealing ball valve.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the ball valve comprises a valve body, a sealing valve seat, a ball body, a supporting valve seat, a valve rod, a sealing valve seat gasket, a front-end anti-extrusion ring, a supporting valve seat sealing ring, a rear-end anti-extrusion ring, a pressing ring, a disc spring, a supporting sleeve, a valve body support, a valve body screw, a valve body inner hole bottom surface, a valve body inner hole surface, a valve body-supporting valve seat sealing pair, a ball body-supporting valve seat sealing pair, a valve body-sealing valve seat sealing pair and a ball body-sealing valve seat sealing pair, wherein the inner wall of the valve body is fixedly connected with the sealing valve seat, the surface of the sealing valve seat is fixedly connected with the ball body, a gap is reserved between the bottom end.
Preferably, the one end fixedly connected with that the valve body was kept away from sealed disk seat supports the disk seat, and supports the disk seat and be close to the one end and the spheroidal fixed surface of sealed disk seat and be connected, the top middle part of valve body is provided with the valve body support, the top of valve body passes through valve body screw threaded connection with the bottom of valve body support.
Preferably, one end of the sealing valve seat far away from the supporting valve seat is fixedly connected with a sealing valve seat gasket, and a valve body-sealing valve seat sealing pair is fixedly connected below the sealing valve seat gasket.
Preferably, a joint of the ball and the sealing valve seat is fixedly connected with a ball-sealing valve seat sealing pair, and a joint of the ball and the supporting valve seat is provided with a valve body-supporting valve seat sealing pair.
Preferably, one end of the support valve seat, which is far away from the sealing valve seat, is provided with a support sleeve, one end of the support sleeve, which is close to the sealing valve seat, is fixedly connected with a disc spring, and one end of the disc spring, which is far away from the support sleeve, is fixedly connected with a pressing ring.
Preferably, one end of the pressing ring is provided with a rear-end anti-extrusion ring, the rear-end anti-extrusion ring is far away from one end of the pressing ring and is fixedly connected with a supporting valve seat sealing ring, and the front-end anti-extrusion ring is fixedly connected with one end of the supporting valve seat sealing ring.
Preferably, a valve body-supporting valve seat sealing pair is arranged between the valve body and the supporting valve seat, the bottom surface of an inner hole of the valve body is fixedly connected inside the valve body, and the inner hole surface of the valve body is arranged inside the valve body.
Advantageous effects
1. In the novel double-stage metal hard seal ball valve, a support valve seat of the double-stage metal hard seal ball valve is attached to the inner hole surface of a valve body to form a valve body-support valve seat sealing pair, the support valve seat is attached to the surface of a ball body to form a ball body-support valve seat sealing pair, and the valve body-support valve seat sealing pair and the ball body-support valve seat sealing pair form a first-stage seal of the valve. The valve body-sealing valve seat sealing pair is 2 seals, the sealing valve seat gasket and the bottom surface of the inner hole of the valve body are jointed to form 1 seal of the valve body-sealing valve seat sealing pair, the sealing valve seat and the bottom surface of the inner hole of the valve body are jointed to form 2 seals of the valve body-sealing valve seat sealing pair, the valve body-sealing valve seat sealing pair and the sphere-sealing valve seat sealing pair form the second seal of the valve, and the two-stage seal enables the valve to have more reliable sealing performance so as to be suitable for medium working conditions requiring high-reliability sealing.
Drawings
FIG. 1 is a cross-sectional view of a two-stage metal-to-metal ball valve according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a conventional metal-to-metal ball valve;
FIG. 3 is an enlarged fragmentary view at A of a cross-sectional view of the two-stage metal-to-metal ball valve;
FIG. 4 is a cross-sectional view of the valve body;
FIG. 5 is an enlarged partial view at B of a cross-sectional view of the two-stage metal-to-metal ball valve.
Illustration of the drawings:
1. a valve body; 2. sealing the valve seat; 3. a sphere; 4. a support valve seat; 5. a valve stem; 6. sealing the valve seat gasket; 7. a front end anti-extrusion ring; 8. supporting the valve seat sealing ring; 9. a rear end anti-extrusion ring; 10. pressing a ring; 11. a disc spring; 12. a support sleeve; 13. a valve body support; 14. a valve body screw; 15. the bottom surface of the inner hole of the valve body; 16. the inner hole surface of the valve body; 17. valve body-support valve seat sealing pair; 18. sphere-support valve seat sealing pair; 19. valve body-sealing valve seat sealing pair; 20. ball-sealing valve seat sealing pair.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand, the present invention will be further explained below with reference to the following embodiments and the accompanying drawings, but the following embodiments are only the preferred embodiments of the present invention, and not all embodiments are included. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention.
Specific embodiments of the present invention will be described below with reference to the accompanying drawings.
The specific embodiment is as follows:
referring to fig. 1-4, the valve comprises a valve body 1, a sealing valve seat 2, a ball 3, a supporting valve seat 4, a valve rod 5, a sealing valve seat gasket 6, a front-end anti-extrusion ring 7, a supporting valve seat seal ring 8, a rear-end anti-extrusion ring 9, a pressing ring 10, a belleville spring 11, a supporting sleeve 12, a valve body bracket 13, a valve body screw 14, a valve body inner hole bottom surface 15, a valve body inner hole surface 16, a valve body-supporting valve seat seal pair 17, a ball-supporting valve seat seal pair 18, a valve body-sealing valve seat seal pair 19 and a ball-sealing valve seat seal pair 20, and is characterized in: the inner wall fixedly connected with two sealed disk seats 2 of valve body 1, the fixed surface of two sealed disk seats 2 is connected with spheroid 3, and the clearance is left with 1 inner wall top of valve body in spheroid 3's bottom, and spheroid 3's top fixedly connected with valve rod 5.
Optionally, in this embodiment, one end of the valve body 1, which is far away from the sealing valve seat 2, is fixedly connected with a supporting valve seat 4, one end of the supporting valve seat 4, which is close to the sealing valve seat 2, is fixedly connected with the surface of the ball 3, a valve body support 13 is arranged in the middle of the top end of the valve body 1, the top end of the valve body 1 is in threaded connection with the bottom end of the valve body support 13 through a valve body screw 14, one end of the sealing valve seat 2, which is close to the supporting valve seat 4, is fixedly connected with a sealing valve seat gasket 6, a valve body-sealing valve seat sealing pair 19 is fixedly connected below the sealing valve seat gasket 6, a ball-sealing valve seat sealing pair 20 is fixedly connected at the connection between the ball 3 and the.
The one end that sealed disk seat 2 was kept away from to support disk seat 4 is provided with supports cover 12, support cover 12 is close to sealed disk seat 2's one end fixedly connected with belleville spring 11, belleville spring 11 keeps away from the one end fixedly connected with clamping ring 10 that supports cover 12, the one end of clamping ring 10 is provided with the rear end and prevents extrusion ring 9, the one end fixedly connected with that clamping ring 10 was kept away from to rear end anti-extrusion ring 9 supports disk seat sealing washer 8, the one end fixedly connected with front end that supports disk seat sealing washer 8 prevents extrusion ring 7, be provided with the valve body between valve body 1 and the support disk seat 4-support the sealed pair 17 of disk seat, the inside fixedly connected with valve body hole bottom surface 15 of valve body 1, the.
The values in the examples are stated: leakage rate of metal hard seal ball valve: the valve body-sealing valve seat sealing pair is static sealing, the leakage probability is low (substituted by 0.3%), the ball body-sealing valve seat sealing pair is dynamic sealing, the leakage probability is high (substituted by 1%), the valve body-supporting valve seat sealing pair (substituted by 1%), and the ball body-supporting valve seat sealing pair (substituted by 1%).
The valve body-sealing valve seat sealing pair and the sphere-sealing valve seat sealing pair of the conventional metal hard sealing ball valve leak at any sealing pair, and the leakage rate of statistical analysis is as follows: (0.3% +1% = 1.3%);
the first-stage seal (valve body-supporting valve seat seal pair 16 and ball body-supporting valve seat seal pair 17) and the second-stage seal (valve body-sealing valve seat seal pair 18 and ball body-sealing valve seat seal pair 19) of the double-stage metal hard seal ball valve are in a series connection mode, so the statistical analysis leakage rate is as follows: (0.3% + 1%) 1% + (0.3% + 1%), 1% + (1% + 1%) 0.3% + (1% + 1%) 1% + (0.3% + 1%) + 0.06%,
therefore, the leakage rate of the double-stage metal hard sealing ball valve is far lower than that of the conventional metal hard sealing ball valve, and the double-stage metal hard sealing ball valve has more reliable sealing performance than the conventional metal hard sealing ball valve
The utility model discloses a theory of operation: firstly, the valve rod 5 is mechanically combined with the ball body 3, the sealing element is the ball body 3 and the valve seat, the ball body 3 is matched with the valve seat in a ball forming surface, and the ball body 3 is tightly attached to the valve seat through the elasticity of the disc spring 11. The ball 3 can rotate 90 degrees in the valve body 1 by taking the valve rod 5 as a rotating shaft so as to open and close a valve body (pipeline) channel and achieve the function of opening and cutting off a channel medium. The sealing valve seat 2 of the conventional metal hard sealing ball valve is tightly attached to the valve body 1 to form a sealing valve seat-valve body sealing pair. The sealing surface of the sealing valve seat 2 is tightly attached to the ball body 3 to form a sealing valve seat-ball body sealing pair. The sealing valve seat-valve body sealing pair and the sealing valve seat-ball sealing pair jointly form a sealing factor of a conventional metal hard sealing ball valve, a support valve seat 4 of the double-stage metal hard sealing ball valve is attached to an inner hole surface 16 of the valve body to form a valve body-support valve seat sealing pair 17, the support valve seat 4 is attached to the surface of the ball body 3 to form a ball body-support valve seat sealing pair 18, and the valve body-support valve seat sealing pair 17 and the ball body-support valve seat sealing pair 18 form a first-stage seal of the valve. The valve body-sealing valve seat sealing pair 19 is 2 seals, the sealing valve seat 2, the sealing valve seat gasket 6 and the bottom surface 15 of the inner hole of the valve body are jointed to form 1 seal of the valve body-sealing valve seat sealing pair, the sealing valve seat and the bottom surface 15 of the inner hole of the valve body are jointed to form two seals of the valve body-sealing valve seat sealing pair 19, the valve body-sealing valve seat sealing pair 19 and the ball body-sealing valve seat sealing pair 20 form the second-stage seal of the valve, and the two-stage seal enables the valve to have more reliable sealing performance so as to guarantee the medium working condition of high-reliability seal.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a doublestage metal ball valve sealed firmly, including valve body (1), sealed disk seat (2), spheroid (3), support disk seat (4), valve rod (5), sealed disk seat gasket (6), front end is prevented squeezing ring (7), support disk seat sealing washer (8), rear end is prevented squeezing ring (9), clamping ring (10), belleville spring (11), support cover (12), valve body support (13), valve body screw (14), valve body hole bottom surface (15), valve body hole face (16), valve body-support disk seat is sealed vice (17), spheroid-support disk seat is sealed vice (18), valve body-sealed disk seat is sealed vice (19), spheroid-sealed disk seat is sealed vice (20), its characterized in that: the inner wall of the valve body (1) is fixedly connected with two sealing valve seats (2), the surface of each sealing valve seat (2) is fixedly connected with a ball body (3), a gap is reserved between the bottom end of each ball body (3) and the top end of the inner wall of the valve body (1), and the top end of each ball body (3) is fixedly connected with a valve rod (5).
2. The two-stage metal-to-metal ball valve of claim 1, wherein: one end fixedly connected with that sealed disk seat (2) were kept away from in valve body (1) supports disk seat (4), and supports disk seat (4) and is close to the one end of sealed disk seat (2) and the fixed surface of spheroid (3) and be connected, the top middle part of valve body (1) is provided with valve body support (13), valve body screw (14) threaded connection is passed through with the bottom of valve body support (13) in the top of valve body (1).
3. The two-stage metal-to-metal ball valve of claim 1, wherein: one end, far away from the supporting valve seat (4), of the sealing valve seat (2) is fixedly connected with a sealing valve seat gasket (6), and a valve body-sealing valve seat sealing pair (19) is fixedly connected below the sealing valve seat gasket (6).
4. The two-stage metal-to-metal ball valve of claim 1, wherein: the joint of the sphere (3) and the sealing valve seat (2) is fixedly connected with a sphere-sealing valve seat sealing pair (20), and the joint of the sphere (3) and the supporting valve seat (4) is provided with a valve body-supporting valve seat sealing pair (17).
5. The two-stage metal-to-metal ball valve of claim 1, wherein: one end, far away from the sealing valve seat (2), of the supporting valve seat (4) is provided with a supporting sleeve (12), one end, close to the sealing valve seat (2), of the supporting sleeve (12) is fixedly connected with a disc spring (11), and one end, far away from the supporting sleeve (12), of the disc spring (11) is fixedly connected with a pressing ring (10).
6. The two-stage metal-to-metal ball valve of claim 1, wherein: the one end of clamping ring (10) is provided with rear end and prevents extrusion ring (9), the one end fixedly connected with that clamping ring (10) were kept away from to extrusion ring (9) is prevented to the rear end supports disk seat sealing washer (8), extrusion ring (7) is prevented to the one end fixedly connected with front end that supports disk seat sealing washer (8).
7. The two-stage metal-to-metal ball valve of claim 6, wherein: a valve body-supporting valve seat sealing pair (17) is arranged between the valve body (1) and the supporting valve seat (4), the inner portion of the valve body (1) is fixedly connected with a valve body inner hole bottom surface (15), and a valve body inner hole surface (16) is arranged inside the valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021730031.XU CN213271104U (en) | 2020-08-19 | 2020-08-19 | Two-stage metal hard sealing ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021730031.XU CN213271104U (en) | 2020-08-19 | 2020-08-19 | Two-stage metal hard sealing ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213271104U true CN213271104U (en) | 2021-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021730031.XU Active CN213271104U (en) | 2020-08-19 | 2020-08-19 | Two-stage metal hard sealing ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213271104U (en) |
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2020
- 2020-08-19 CN CN202021730031.XU patent/CN213271104U/en active Active
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