CN213271105U - Double-channel metal hard sealing ball valve - Google Patents
Double-channel metal hard sealing ball valve Download PDFInfo
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- CN213271105U CN213271105U CN202021730032.4U CN202021730032U CN213271105U CN 213271105 U CN213271105 U CN 213271105U CN 202021730032 U CN202021730032 U CN 202021730032U CN 213271105 U CN213271105 U CN 213271105U
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Abstract
The utility model relates to a ball valve technical field especially relates to a double metal ball valve that seals firmly, including the main valve body and vice valve body, the main valve body passes through bolt fixed connection with vice valve body, the inboard of the main valve body is provided with first mounting groove to the inboard of vice valve body is provided with the second mounting groove. The utility model discloses a setting of the sealed face of first sealed face and second, the double sealing is pasted tightly more stably to the support of valve ball, the sealed face of first sealed face and second of sealed disk seat is hugged closely with valve ball sealing surface and is formed the double sealing pair, the double sealing pair makes this ball valve have tighter and reliable and stable sealing performance, the problem of sealing has been solved to conventional metal hard seal ball valve under the operating mode that contains stereoplasm granule fluid medium and require tight seal because the sealed face of single sealing can't guarantee again after damaging, the sealing stability of valve has been promoted, tightness and sealing reliability, the life of extension ball valve.
Description
Technical Field
The utility model relates to a ball valve technical field especially relates to a double track metal ball valve that seals firmly.
Background
The existing conventional metal hard sealing ball valve generally comprises a main valve body, an auxiliary valve body, a sealing valve seat, a ball body, a supporting valve seat, a valve rod and a disk spring, wherein the valve rod is mechanically combined with the ball body, the sealing element is the ball body and the valve seat, the ball body is matched with the valve seat in a ball forming surface, the ball body is tightly attached to the valve seat through the elastic force of the disk spring, and 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 valve body (pipeline) channel and achieve the function of opening and cutting off.
The sealing valve seat of the conventional metal hard sealing ball valve is tightly attached to the auxiliary valve body to form a sealing valve seat-auxiliary valve body sealing pair A, the sealing valve seat sealing surface is tightly attached to the ball body to form a sealing pair B, the sealing valve seat-auxiliary valve body sealing pair A and the sealing pair B jointly form a sealing factor of the conventional metal hard sealing ball valve, and any sealing pair of the sealing valve seat-auxiliary valve body sealing pair A or the sealing pair B of the conventional metal hard sealing ball valve leaks, so that the valve leaks.
Disclosure of Invention
The utility model aims at providing a two pass metal ball valve that seals firmly.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a two pass metal ball valve that seals firmly, includes the main valve body and the sub-valve body, the main valve body passes through bolt fixed connection with the sub-valve body, the inboard of the main valve body is provided with first mounting groove to the inboard of the sub-valve body is provided with the second mounting groove, the inside of first mounting groove is provided with supports the disk seat, and the inside of second mounting groove is provided with sealed disk seat, the valve rod is worn to be equipped with at the top of the main valve body to the bottom fixedly connected with valve ball of valve rod, sealed disk seat all is provided with the spill sphere with valve ball looks adaptation with the one side that supports the disk seat and be close to valve ball, sealed disk seat is located the right side of spill sphere and is provided with first sealed face to the left side that sealed.
Preferably, a disc spring is arranged inside the first mounting groove, and one side of the disc spring is abutted against one side of the support valve seat.
Preferably, the top of the main valve body is provided with a sealing groove, and a sealing filler is arranged in the sealing groove.
Preferably, the top of the sealing groove is in threaded connection with a packing pressing sleeve, and a through hole matched with the valve rod is formed in the middle of the packing pressing sleeve.
Preferably, the top of the inner wall of the sealing groove is provided with an internal thread, and the bottom of the surface of the packing pressing sleeve is provided with an external thread matched with the internal thread.
Preferably, one side of the sealing valve seat close to the auxiliary valve body is provided with an annular groove, and a compensation spring is arranged inside the annular groove.
The utility model discloses possess following beneficial effect at least:
through the arrangement of the first sealing surface and the second sealing surface, the support of the double-channel sealing surface to the valve ball is more stably attached, the first sealing surface and the second sealing surface of the sealing valve seat are closely attached to the sealing surface of the valve ball to form a double-channel sealing pair, and the double-channel sealing pair enables the ball valve to have tighter, more stable and more reliable sealing performance, so that the problem that the sealing of the conventional metal hard sealing ball valve cannot be guaranteed again due to the damage of the single-channel sealing surface under the working conditions of fluid media containing hard particles and requiring tight sealing is solved, the sealing stability, tightness and sealing reliability of the valve are improved, and the service life of the ball valve is prolonged; through the arrangement of the annular groove and the compensation spring, the double-channel sealing surface has certain self-compensation capability after being worn, the sealing effect is further improved, and the service life is prolonged; through the setting of packing pressure sleeve, change convenient operation to sealed packing.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.
FIG. 1 is a sectional view of the structure of the present invention;
FIG. 2 is a side view of the sealing seat structure of the present invention;
FIG. 3 is a cross-sectional view of the sealing valve seat structure of the present invention;
fig. 4 is a partially enlarged view of a portion a in fig. 1 according to the present invention.
In the figure: 1. a main valve body; 2. a sub-valve body; 3. a first mounting groove; 4. a second mounting groove; 5. 6, sealing the valve seat; 7. a valve stem; 8. a valve ball; 9. a concave spherical surface; 10. a first sealing surface; 11. a second sealing surface; 12. a disc spring; 13. a sealing groove; 14. sealing and filling; 15. pressing and sleeving the filler; 16. a through hole; 17. an internal thread; 18. an external thread; 19. an annular groove; 20. and a compensation spring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-4, a double-channel metal hard sealing ball valve comprises a main valve body 1 and an auxiliary valve body 2, the main valve body 1 and the auxiliary valve body 2 are fixedly connected through bolts, a first mounting groove 3 is arranged on the inner side of the main valve body 1, a second mounting groove 4 is arranged on the inner side of the auxiliary valve body 2, a supporting valve seat 5 is arranged in the first mounting groove 3, a sealing valve seat 6 is arranged in the second mounting groove 4, a valve rod 7 penetrates through the top of the main valve body 1, a valve ball 8 is fixedly connected to the bottom end of the valve rod 7, a concave spherical surface 9 matched with the valve ball 8 is arranged on each of the sealing valve seat 6 and the supporting valve seat 5 on one side close to the valve ball 8, a first sealing surface 10 is arranged on the right side of the concave spherical surface 9 of the sealing valve seat 6, a second sealing surface 11 is arranged on the left side of the concave spherical surface 9 of the sealing valve seat 6, and a first sealing surface 10 and a second sealing surface The first sealing pair and the second sealing pair of the ball valve are formed by tightly attaching the lower part of the ball valve, the first sealing pair and the second sealing pair form a double-metal hard sealing ball valve structure, and the valve rod 7 is mechanically connected with the valve ball 8.
The scheme has the following working processes:
a first sealing face 10 on a sealing valve seat 6 is tightly attached to a valve ball 8 to form a first sealing pair, a second sealing face 11 on the sealing valve seat 6 is tightly attached to the valve ball 8 to form a second sealing pair, the sealing valve seat-auxiliary valve body sealing pair, the first sealing pair and the second sealing pair jointly form a sealing factor of the double-channel metal hard sealing ball valve, the sealing valve seat-auxiliary valve body sealing pair is static sealing, the leakage probability is low (substituted by 0.3%), the first sealing pair is dynamic sealing, the leakage probability is higher (substituted by 1%), the second sealing pair leakage probability (substituted by 1%), the valve leaks when any one of the conventional metal hard sealing valve seat-auxiliary valve body sealing pair and the sealing valve seat-ball body sealing pair leaks, and the statistically analyzed leakage rate is (0.3% +1% = 1.3%); the first seal and the second seal of the double-seal pair leak simultaneously, then the valve leaks, and the statistically analyzed leakage rate is (0.3% +1% = 0.31%), so that the double-metal hard-seal ball valve has a much lower leakage rate than the conventional metal hard-seal ball valve.
Furthermore, a disc spring 12 is arranged inside the first mounting groove 3, one side of the disc spring 12 is abutted against one side of the support valve seat 5, and the disc spring 12 presses the support valve seat 5 to enable the sealing valve seat 6 and the support valve seat 5 to be tightly attached to the valve ball 8.
Further, a sealing groove 13 is formed in the top of the main valve body 1, and a sealing packing 14 is arranged inside the sealing groove 13.
Further, the top of the sealing groove 13 is in threaded connection with a packing pressing sleeve 15, and a through hole 16 matched with the valve rod 7 is formed in the middle of the packing pressing sleeve 15.
Furthermore, the top of the inner wall of the sealing groove 13 is provided with an internal thread 17, the bottom of the surface of the packing pressing sleeve 15 is provided with an external thread 18 matched with the internal thread 17, and the packing pressing sleeve 15 is simple and convenient to detach and maintain and the sealing packing 14 is convenient to replace and maintain in a threaded connection mode.
Furthermore, an annular groove 19 is formed in one side, close to the auxiliary valve body 2, of the sealing valve seat 6, a compensation spring 20 is arranged inside the annular groove 19, and after the double-sealing surface is abraded along with long-time use, the compensation spring 20 provides compensation pressure for the surface attachment of the sealing valve seat 6 to the valve ball 8, so that the service life of the ball valve is effectively prolonged.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A double-channel metal hard sealing ball valve comprises a main valve body (1) and an auxiliary valve body (2), wherein the main valve body (1) and the auxiliary valve body (2) are fixedly connected through a bolt, and the double-channel metal hard sealing ball valve is characterized in that a first mounting groove (3) is formed in the inner side of the main valve body (1), a second mounting groove (4) is formed in the inner side of the auxiliary valve body (2), a supporting valve seat (5) is arranged in the first mounting groove (3), a sealing valve seat (6) is arranged in the second mounting groove (4), a valve rod (7) penetrates through the top of the main valve body (1), a valve ball (8) is fixedly connected to the bottom end of the valve rod (7), a concave spherical surface (9) matched with the valve ball (8) is arranged on one side, close to the valve ball (8), of the sealing valve seat (6) and one side, close to the valve ball (8), of the supporting valve seat (5), respectively, and a first, and a second sealing surface (11) is arranged on the left side of the concave spherical surface (9) of the sealing valve seat (6).
2. A double-metal hard-sealed ball valve according to claim 1, wherein a disc spring (12) is provided inside the first mounting groove (3), and one side of the disc spring (12) abuts against one side of the support valve seat (5).
3. The double-channel metal hard seal ball valve according to claim 1, wherein a seal groove (13) is formed at the top of the main valve body (1), and a seal packing (14) is arranged inside the seal groove (13).
4. The double-channel metal hard seal ball valve according to claim 3, wherein a packing pressing sleeve (15) is connected to the top of the seal groove (13) in a threaded manner, and a through hole (16) matched with the valve rod (7) is formed in the middle of the packing pressing sleeve (15).
5. The double-channel metal hard seal ball valve according to claim 4, wherein the top of the inner wall of the seal groove (13) is provided with an internal thread (17), and the bottom of the surface of the packing pressing sleeve (15) is provided with an external thread (18) matched with the internal thread (17).
6. The double-channel metal hard seal ball valve according to claim 1, characterized in that one side of the seal valve seat (6) close to the auxiliary valve body (2) is provided with an annular groove (19), and a compensation spring (20) is arranged inside the annular groove (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021730032.4U CN213271105U (en) | 2020-08-19 | 2020-08-19 | Double-channel metal hard sealing ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021730032.4U CN213271105U (en) | 2020-08-19 | 2020-08-19 | Double-channel metal hard sealing ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213271105U true CN213271105U (en) | 2021-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021730032.4U Active CN213271105U (en) | 2020-08-19 | 2020-08-19 | Double-channel metal hard sealing ball valve |
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| CN (1) | CN213271105U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115614498A (en) * | 2022-11-10 | 2023-01-17 | 上海瑞控阀门有限公司 | Low-temperature electric control ball valve reliable in sealing |
-
2020
- 2020-08-19 CN CN202021730032.4U patent/CN213271105U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115614498A (en) * | 2022-11-10 | 2023-01-17 | 上海瑞控阀门有限公司 | Low-temperature electric control ball valve reliable in sealing |
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