CN211117745U - High-performance soft-hard independent double-sealing ball valve - Google Patents
High-performance soft-hard independent double-sealing ball valve Download PDFInfo
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- CN211117745U CN211117745U CN201922100904.2U CN201922100904U CN211117745U CN 211117745 U CN211117745 U CN 211117745U CN 201922100904 U CN201922100904 U CN 201922100904U CN 211117745 U CN211117745 U CN 211117745U
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Abstract
The utility model discloses a high performance soft or hard independent double sealing ball valve, including valve body, valve gap, runner, upper valve rod, spheroid, valve seat and lower valve rod, the valve seat adopts scraper formula hard seal valve seat, this scraper formula hard seal valve seat includes scraper, valve seat backing ring and hard sealing ring, the valve seat backing ring is fixed to be set up in the valve body, the hard sealing ring is installed on the valve seat backing ring and pastes with the spheroid, and the hard sealing ring has a hard sealing face that matches with the spheroid and is the spherical shape, reach sealed cooperation with the spheroid through this hard sealing face, the scraper is installed on the valve seat backing ring and the knife face of this scraper offsets with the spheroid and lies in the tangent line of spheroid; be provided with one in the scraper formula sealed valve seat firmly and reset the piece, let the scraper on the scraper formula sealed valve seat firmly have all the time towards spheroid motion and with the trend that the spheroid offseted through this piece that resets. The utility model has the advantages of it is following and effect: can effectively scrape off the adhesive or coking on the surface of the ball body.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to independent double sealing ball valve of high performance soft or hard.
Background
In petroleum, chemical and coking plants, seal leakage is caused by high medium temperatures in the lines adhering or coking to the valve bore and seal surfaces. And the medium containing dust and floating particles washes the valve seat. The working conditions are harsh. However, the service life of the conventional valve is short under the working condition. The valves are replaced more frequently, and great influence is caused to the production of enterprises.
Even if the common ball valve adopts the scraper type valve seat, the sealing surface is a conical surface, once the angle of the conical surface is smaller than the repose angle of particles, the particles are easily twisted into the sealing surface, the sealing surface is damaged, a ball body is scratched, and the service life of the valve is shortened.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a high performance soft or hard independent double sealing ball valve solves the problem of mentioning in the background art.
The above technical purpose of the present invention can be achieved by the following technical solutions: a high-performance soft-hard independent double-sealing ball valve comprises a valve body and a valve cover arranged at the upper end of the valve body, wherein a flow channel for fluid medium to flow is formed in the valve body, an upper valve rod penetrating the flow channel is arranged on the valve cover, a ball body synchronously rotating along with the upper valve rod is arranged at one end, located at the flow channel, of the upper valve rod, a valve seat matched with the ball body to realize sealing is arranged in the valve body, a mounting hole is formed in the lower portion, located at the ball body, of the valve body, a lower valve rod penetrating the ball body is arranged in the mounting hole, a lower end cover covering the mounting hole is arranged on the outer wall of the valve body, a scraper type hard sealing valve seat is adopted as the scraper type hard sealing valve seat, the scraper type hard sealing valve seat comprises a scraper, a valve seat supporting ring and a hard sealing ring, the valve seat supporting ring is fixedly arranged in the valve body and used as a bearing member to support and fix the hard, the hard sealing ring is provided with a hard sealing surface which is matched with the sphere and is in a spherical shape, the hard sealing surface is in sealing fit with the sphere, the scraper is arranged on the valve seat supporting ring, and the scraper surface of the scraper is abutted against the sphere and is positioned on the tangent line of the sphere; scraper formula hard seal disk seat in be provided with one and reset the piece, let scraper on the scraper formula hard seal disk seat have all the time towards spheroid motion and the trend that offsets with the spheroid through this piece that resets.
The further setting is that: reset the piece for dish spring, should dish the spring setting and keep away from spheroidal one end at the scraper, the fixed butt section that is provided with of scraper, the one end of dish spring install on the valve body, the other end is installed on the butt section to the effort that resets through self makes the scraper have all the time towards the spheroid motion and with the trend that the spheroid offseted.
The further setting is that: the scraper type hard sealing valve seat is internally provided with a dustproof piece pressed and held by the lower part of the scraper, and the dustproof piece is positioned at one end of the disc spring, which is far away from the butt joint section, and is propped against the disc spring.
The further setting is that: and a fire collar is also arranged in the scraper type hard sealing valve seat and is pressed and held by the abutting section.
The further setting is that: the valve body is internally provided with a sealing channel corresponding to the valve seat support ring, a return spring is arranged in the sealing channel, and the return spring is compressed on the valve seat support ring so that the valve seat support ring always has the tendency of moving towards the ball body and abutting against the ball body.
The further setting is that: an O-shaped ring is arranged between the valve seat support ring and the valve body.
The further setting is that: the valve body is provided with a grease injection valve, a grease injection channel communicated with the grease injection valve is arranged in the scraper type hard sealing valve seat, and the grease injection channel at least flows through the scraper and the valve seat support ring.
The further setting is that: and a drain valve is arranged on the lower valve rod.
The further setting is that: an exhaust valve is arranged on the ball body.
The beneficial effects of the utility model reside in that:
1. The utility model discloses be provided with scraper formula hard seal disk seat to the position to the scraper has been injectd, the knife face of scraper is located spheroidal tangent line promptly, and the knife face of scraper can be perpendicular to spheroid from this and cross the radius of its tangent point, just so makes the knife face of scraper and the angle that the spheroid formed be far greater than particulate material's angle of repose, guarantees that the granule can not twisted into sealed face, and can effectively scrape the adhesion thing or the coking on spheroid surface.
2. The utility model provides a be provided with dish spring and reset spring in the scraper formula hard seal disk seat, after adopting this kind of design, guaranteed that this scraper formula hard seal disk seat can not die or damage because of the card of one of them of dish spring or reset spring and influence scraper formula hard seal disk seat and spheroidal sealed cooperation, stability is better, and sealed effect is better.
3. The utility model discloses a set up the medium that the dust keeper can effectually prevent to have the granule and run to lead to the dead inefficacy of dish spring card to lead to leaking in the middle of the dish spring and take place.
4. The utility model discloses a discharge valve realizes cleaning the valve body, opens every time at this ball valve, can both be once to self inner chamber cleanness to guarantee holistic sealing reliability.
5. The utility model discloses a fat valve is annotated in the setting and the fat passageway is annotated, realizes the lubrication of scraper and disk seat lock ring, avoids appearing the dead phenomenon of card and takes place.
6. The utility model discloses in through setting up the fire collar, make the inside of valve body can realize quick fire-retardant, strengthened the whole fire resistance of valve body.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment;
Fig. 2 is an enlarged view of a portion a in fig. 1.
In the figure: 11. a valve body; 12. a valve cover; 13. a flow channel; 14. an upper valve stem; 15. a sphere; 16. mounting holes; 17. a lower valve stem; 18. a lower end cover; 2. a scraper type hard sealing valve seat; 21. a scraper; 211. a knife face; 212. an abutment section; 22. a valve seat support ring; 23. a hard seal ring; 231. a hard seal face; 24. a disc spring; 25. a dust-proof member; 26. a fire collar; 27. sealing the channel; 28. a return spring; 29. an O-shaped ring; 31. a grease injection valve; 311. a grease injection channel; 32. a blowoff valve; 33. and (4) exhausting the valve.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, a high-performance soft-hard independent double-sealing ball valve comprises a valve body 11 and a valve cover 12 arranged at the upper end of the valve body 11, a flow passage 13 for fluid medium to circulate is formed in the valve body 11, an upper valve rod 14 penetrating through the flow passage 13 is installed on the valve cover 12, a ball body 15 rotating synchronously with the upper valve rod 14 is installed at one end, located in the flow passage 13, of the upper valve rod 14, a valve seat matched with the ball body 15 to realize sealing is arranged in the valve body 11, a mounting hole 16 is formed in the lower portion, located on the valve body 11, of the ball body 15, a lower valve rod 17 penetrating through the ball body 15 is arranged in the mounting hole 16, and a lower. The upper end of the upper valve stem 14 is generally provided with an actuator or handle (not shown) for driving the upper valve stem 14 to rotate along its circumference, and the upper valve stem 14 drives the ball 15 to rotate synchronously, so that the ball 15 is matched with the valve seat to seal the flow passage 13. The above structure is the basic structure of the ball valve, and belongs to the field of the prior art, so that the description is not provided herein.
The valve seat adopts scraper formula hard seal valve seat 2, this scraper formula hard seal valve seat 2 is including scraper 21, valve seat support ring 22 and hard sealing ring 23, and valve seat support ring 22 is fixed to be set up in valve body 11 as the carrier and support and fix hard sealing ring 23 and scraper 21, hard sealing ring 23 install on valve seat support ring 22 and paste mutually with spheroid 15, and hard sealing ring 23 has one and spheroid 15 phase-match and be the hard sealing face 231 of spherical shape, reach sealed cooperation through this hard sealing face 231 and spheroid 15, scraper 21 installs on valve seat support ring 22 and the knife face 211 of this scraper 21 offsets with spheroid 15 and is located the tangent line of spheroid 15.
The blade face 211 of the scraper 21 is located on the tangent of the sphere 15, so that the blade face 211 of the scraper 21 is perpendicular to the radius of the sphere 15 passing through the tangent point, and thus the angle formed by the blade face 211 of the scraper 21 and the sphere 15 is far larger than the repose angle of the particle material, thereby ensuring that the particles cannot be twisted into the sealing surface and effectively scraping off the adhered substances or cokes on the surface of the sphere 15.
A reset piece is arranged in the scraper type hard sealing valve seat 2, and a scraper 21 on the scraper type hard sealing valve seat 2 always has the trend of moving towards the ball body 15 and offsetting against the ball body 15 through the reset piece. Specifically, this piece that resets is dish spring 24, and dish spring 24 sets up the one end of keeping away from spheroid 15 at scraper 21, and scraper 21 is fixed to be provided with an butt section 212, and the one end of dish spring 24 is installed on valve body 11, the other end is installed on butt section 212 to reset the effort through self and make scraper 21 have the trend towards spheroid 15 motion and offset with spheroid 15 all the time.
Be provided with the dust keeper 25 of holding by scraper 21 below pressure in the scraper formula hard seal valve seat 2, the dust keeper 25 is located the one end that the butt section 212 was kept away from to the dish spring 24 and offsets with the dish spring 24, and the dust keeper 25 forms through a plurality of sealing rings stack mutually in this implementation, reaches dirt-proof purpose from this through the leakproofness of sealing ring.
Still be provided with fire collar 26 in scraper formula hard seal valve seat 2, this fire collar 26 is held by butt section 212 pressure, and fire collar 26 can adopt graphite fire collar 26 etc. can, from the direct purchase in the market.
A sealing channel 27 is opened in the valve body 11 at a position corresponding to the seat support ring 22, and a return spring 28 is disposed in the sealing channel 27, and the return spring 28 is compressed and acts on the seat support ring 22 to make the seat support ring 22 always have a tendency of moving toward the ball 15 and abutting against the ball 15.
An O-shaped ring 29 is arranged between the valve seat supporting ring 22 and the valve body 11, and the 0-shaped ring is taken as one type of sealing ring and can be purchased from the market; in the embodiment, the unevenness existing in the production of the valve body 11 and the valve seat support ring 22 is compensated through the 0-shaped ring, so that the sealing performance between the valve body 11 and the valve seat support ring is effectively enhanced.
The valve body 11 is provided with a grease injection valve 31, a grease injection channel 311 communicated with the grease injection valve 31 is arranged in the scraper type hard sealing valve seat 2, and the grease injection channel 311 at least passes through the scraper 21 and the valve seat support ring 22. Lubricant may be injected from the grease injection valve 31 to increase the driving smoothness of the scraper 21 and the seat support ring 22 under the disc spring 24 and the return spring 28, respectively.
A blow-down valve 32 is arranged on the lower valve rod 17, an exhaust valve 33 is arranged on the ball body 15, and both the blow-down valve 32 and the exhaust valve 33 belong to mature products and can be purchased directly from the market; meanwhile, the installation on the valve also belongs to a very technical means and is not explained.
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 (9)
1. The utility model provides an independent double sealing ball valve of high performance soft or hard, includes valve body (11) and sets up in valve gap (12) of valve body (11) upper end, valve body (11) in seted up runner (13) that supply the fluid medium circulation, valve gap (12) on install last valve rod (14) of wearing to establish to runner (13), last valve rod (14) one end that is located runner (13) install along with last valve rod (14) synchronous pivoted spheroid (15), valve body (11) in be equipped with cooperation spheroid (15) and realize sealed disk seat, valve body (11) on be equipped with mounting hole (16) in the below that lies in spheroid (15), mounting hole (16) in be equipped with lower valve rod (17) of wearing to establish spheroid (15), valve body (11) outer wall be equipped with lower end cover (18) that the lid established mounting hole (16), its characterized in that:
The valve seat adopts a scraper type hard sealing valve seat (2), the scraper type hard sealing valve seat (2) comprises a scraper (21), a valve seat support ring (22) and a hard sealing ring (23), the valve seat support ring (22) is fixedly arranged in the valve body (11) and is used as a bearing piece to support and fix the hard sealing ring (23) and the scraper (21), the hard sealing ring (23) is arranged on the valve seat support ring (22) and is attached to the sphere (15), the hard sealing ring (23) is provided with a hard sealing surface (231) which is matched with the sphere (15) and is in a spherical shape, the hard sealing surface (231) is in sealing fit with the sphere (15), the scraper (21) is arranged on the valve seat support ring (22), and a knife face (211) of the scraper (21) is abutted to the sphere (15) and is positioned on a tangent line of the sphere (15);
Scraper formula hard seal disk seat (2) in be provided with one and reset the piece, let scraper (21) on scraper formula hard seal disk seat (2) have the trend towards spheroid (15) motion and offset with spheroid (15) all the time through this piece that resets.
2. A high performance soft and hard independent double seal ball valve according to claim 1, characterized in that: reset piece for dish spring (24), this dish spring (24) set up the one end of keeping away from spheroid (15) at scraper (21), scraper (21) fixed be provided with a butt section (212), the one end of dish spring (24) install on valve body (11), the other end is installed on butt section (212) to reset effort through self makes scraper (21) have the trend towards spheroid (15) motion and offset with spheroid (15) all the time.
3. A high performance soft and hard independent double seal ball valve according to claim 2, characterized in that: the scraper type hard sealing valve seat (2) is internally provided with a dustproof piece (25) pressed and held by the lower part of the scraper (21), and the dustproof piece (25) is positioned at one end, far away from the abutting section (212), of the disc spring (24) and abuts against the disc spring (24).
4. A high performance soft and hard independent double seal ball valve according to claim 2, characterized in that: a fire collar (26) is further arranged in the scraper type hard sealing valve seat (2), and the fire collar (26) is pressed and held by an abutting section (212).
5. A high performance soft and hard independent double seal ball valve according to claim 1, characterized in that: a sealing channel (27) is formed in the valve body (11) corresponding to the valve seat support ring (22), a return spring (28) is arranged in the sealing channel (27), and the return spring (28) is compressed and acts on the valve seat support ring (22) to enable the valve seat support ring (22) to always have the tendency of moving towards the ball body (15) and abutting against the ball body (15).
6. A high performance soft and hard independent double seal ball valve according to claim 1, characterized in that: an O-shaped ring (29) is arranged between the valve seat support ring (22) and the valve body (11).
7. A high performance soft and hard independent double seal ball valve according to claim 1, characterized in that: the grease injection valve (31) is installed on the valve body (11), a grease injection channel (311) communicated with the grease injection valve (31) is formed in the scraper type hard sealing valve seat (2), and the grease injection channel (311) at least passes through the scraper (21) and the valve seat support ring (22).
8. A high performance soft and hard independent double seal ball valve according to claim 1, characterized in that: and a drain valve (32) is arranged on the lower valve rod (17).
9. A high performance soft and hard independent double seal ball valve according to claim 1, characterized in that: an exhaust valve (33) is arranged on the ball body (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922100904.2U CN211117745U (en) | 2019-11-29 | 2019-11-29 | High-performance soft-hard independent double-sealing ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922100904.2U CN211117745U (en) | 2019-11-29 | 2019-11-29 | High-performance soft-hard independent double-sealing ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211117745U true CN211117745U (en) | 2020-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922100904.2U Active CN211117745U (en) | 2019-11-29 | 2019-11-29 | High-performance soft-hard independent double-sealing ball valve |
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| Country | Link |
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| CN (1) | CN211117745U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112610717A (en) * | 2021-02-01 | 2021-04-06 | 温州青鸟自控阀门有限公司 | Automatic decoking multi-layer sealing discharging ball valve with double scrapers |
-
2019
- 2019-11-29 CN CN201922100904.2U patent/CN211117745U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112610717A (en) * | 2021-02-01 | 2021-04-06 | 温州青鸟自控阀门有限公司 | Automatic decoking multi-layer sealing discharging ball valve with double scrapers |
| CN112610717B (en) * | 2021-02-01 | 2024-05-24 | 温州青鸟自控阀门有限公司 | Automatic decoking multi-level sealing unloading ball valve with double scrapers |
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