CN100501210C - Abrasion-proof hard seal metal ball valve - Google Patents
Abrasion-proof hard seal metal ball valve Download PDFInfo
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- CN100501210C CN100501210C CNB2007101463778A CN200710146377A CN100501210C CN 100501210 C CN100501210 C CN 100501210C CN B2007101463778 A CNB2007101463778 A CN B2007101463778A CN 200710146377 A CN200710146377 A CN 200710146377A CN 100501210 C CN100501210 C CN 100501210C
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- abrasion
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Abstract
The invention provides a wear-resistant hard sealing metallic ball valve. Wherein, a ball is provided in a valve body, the ball is connected with a main shaft and a fixed shaft; at the upper end of the valve body, a stuffing box is provided; the entrance end of the valve body is provided with an end cover assembly; a cylinder actuator is provided on the upper end of the valve body through a cylinder support; the main shaft is connected with the cylinder actuator; in the end cover of the end cover assembly, a base is provided; the circular recess of the base is provided with a compression spring, the upper end of which is provided with a pressure ring; in the cavity of the base, a valve seat is provided; the seal surface between the valve seat and the ball is a spherical seal surface; the eccentric section at the lower end of the main shaft is connected with the upper end of the ball in eccentric fitting way; all the main shaft, the fixed shaft and the valve seat employ double sealing; a plurality of flushing ports are provided on the valve body for flushing the ball, the valve seat, the main shaft and the fixed shaft. The valve is resistant to high temperature, high pressure, corrosion and abrasive, is of high air tightness and flexible movement, and is widely applicable for coal and chemical industry.
Description
Technical field
The present invention relates to a kind of ball valve, especially for the abrasion-proof hard seal metal ball valve of Coal Chemical Industry industry use.
Background technique
Ball valve is widely used in every field such as oil, Coal Chemical Industry, iron and steel, metallurgy and electric power.Compare with other valve that is used for controlling plumbing fixtures medium break-make, ball valve have fluid resistance little, easy to operate, open and close rapidly, flow to unrestricted and advantage such as compact structure.But because the valve seat of ordinary ball valve generally all adopts Synthesis of polymers made such as rubber and teflon, serviceability temperature is lower than 200 ℃, and wear resistance is very poor, has limited the using scope of ball valve.Existing hard seal ball valve is in the requirement that also is difficult to satisfy harsh operating mode aspect corrosion-resistant and the erosion.And abrasion-proof hard seal metal ball valve can improve the combination property of ball valve greatly.
The influence that gone up by international crude oil, Gas Prices, domestic Coal Chemical Industry industry was developed rapidly in recent years, large-scale coal chemical engineering equipment is investment construction in succession throughout the country, abrasion-proof hard seal metal ball valve is as the visual plant that is used to transport coal dust and vaporizing burner pulp water in the Coal Chemical Industry tooling, and its performance plays key effect to the operation of whole device.Because of its working temperature height, pressure height, also contain the very strong solid particles of abrasion such as lime-ash in the medium, so the abrasion-proof hard seal ball valve need have combination property such as high temperature resistant, high pressure resistant, corrosion-resistant, wear-resistant.In addition, have also that valve base sealing is good, the characteristics of flexible movements.
Summary of the invention
Purpose of the present invention provides a kind of have high temperature resistant, high pressure, corrosion-resistant, abrasion, has the antifriction metal (AFM) hard seal ball valve of good seal performance, flexible movements.
Realize the object of the invention technological scheme: a kind of abrasion-proof hard seal metal ball valve, spheroid is set in the valve body, on the valve body, following two ends are respectively equipped with main shaft and the stationary axle that is connected with spheroid, the upper end of valve body is provided with stuffing box, be provided with filler between stuffing box and the main shaft, the Gland that the filler upper end is provided with is connected with valve body, the entry end of valve body is provided with end-cap assembly, establish base in the end cap of described end-cap assembly, the annular groove of base is provided with stage clip, the upper end of stage clip is provided with pressure ring, in the cavity of base valve seat is set, and the sealing surface between its valve seat and the spheroid is the ball-type sealing surface.
On the described valve body, the position corresponding with spheroid, main shaft, stationary axle and valve seat be provided with rinse mouth.
The main shaft lower end of described ball valve is provided with eccentric segment, and the eccentric opening that itself and spheroid upper end are provided with is connected, and drives spheroid when main shaft rotates and rotates.
Described main shaft, stationary axle and valve seat adopt double sealing to be connected.
The main shaft of described ball valve, the ceramic coated material in stationary axle surface; Coated with hard alloy on the ball-type sealing surface between valve seat and the spheroid.
The present invention compared with prior art has following advantage: the ball face sealing form that adopts soft or hard to combine between (1) spheroid and the valve seat, on the base of end-cap assembly stage clip is set, sealing surface is the ball-type sealing surface between spheroid and the valve seat, under the effect of initial tension of spring, produce certain seal pressure, thereby realize sealing, both guaranteed that valve seat did not cause damage because of bearing big pressure, the also destruction because of there being slight cut to cause sealing on the valve seat has not been improved the sealability of ball valve; The base of end-cap assembly is embedded in the end cap inboard, has both guaranteed the operation of valve long-term stability, has reduced the cost of valve simultaneously, has improved Economy.(2) main shaft, stationary axle and valve seat all adopt double sealing, prevent that solid particle from entering in the above-mentioned sealing pair, have effectively reduced wearing and tearing, have prolonged service time.(3) main shaft lower end eccentric segment and spheroid upper end off-centre is connected, and when double-acting cylinder drove the main shaft rotation, spheroid rotated thereupon, prevents that main shaft from damaging, and improved working efficiency.(4) design has a plurality of rinse mouths on the valve body, is used for the flushing of spheroid, valve seat, main shaft and stationary axle, and is flexible to guarantee valve event, long-term operation.(5) the sphere coated with hard of valve seat and spheroid closes, and improves valve impact resistance and wear resistance; The ball valve on-off ratio is more frequent, and the wearing and tearing that valve rod is subjected to are very serious, behind main shaft, the ceramic coated material in stationary axle surface, and the wear resistance and the working life of having improved ball valve.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a spheroid plan view of the present invention;
Fig. 3 is a spheroid plan view of the present invention;
Fig. 4 is a main shaft plan view of the present invention;
Fig. 5 is a main shaft worm's eye view of the present invention;
Fig. 6 is a valve component sectional view of the present invention;
Fig. 7 is an end-cap assembly sectional view of the present invention.
Among the figure: 1. valve body; 2. end-cap assembly; 3. main shaft; 4. spheroid; 5. actuator; 6. cylinder support; 7. Gland; 8. stuffing box; 9. main shaft sleeve; 10. stationary axle axle sleeve; 11. stationary axle; 12. graphite-seal ring; 13. valve component; 14. filler; 15. sealing gasket; 16. sealing gasket; 17. sealing gasket; 18. bolt; 19. bolt; 20. bolt; 21. key; 22. bolt; 23. stay bolt; 24. bolt; 25. graphite-seal ring; 26. graphite-seal ring; 27. eccentric opening; 28. eccentric segment; 29.V type filler; 30. spring; 31. pressure ring; 32. valve seat; 33. ball-type sealing surface; 34. end cap; 35. base; 36. inlet; 37. outlet; 38. spheroid passage; 39,40,41,42. rinse mouths.
Embodiment
Below in conjunction with accompanying drawing content of the present invention is further specified.
As shown in Figure 1, 2, 3, the left and right two ends of its valve body 1 are respectively outlet 36, inlet 37, and the upper/lower terminal of valve body 1 is provided with the through hole that main shaft 3 and stationary axle 11 are installed.Spheroid 4 is set in the cavity of valve body 1, and be axially arranged with and inlet 36, the outlet of spheroid 4 37 are positioned at same axial spheroid passage 38, spheroid 4 radially the upper end is provided with eccentric opening 27, radially the lower end is provided with center hole.Place fixed axle sleeve 10 in the center hole of spheroid 4, put into twice graphite-seal ring 12 in the fixed axle sleeve 10, stationary axle 11 passes valve body 1 and is tightly connected with fixed axle sleeve 10, fixedly connected by bolt 24 by means of sealing gasket 15 between stationary axle 11 and the valve body 1, offer vertical through hole on the stationary axle 11, this vertical through hole is connected with rinse mouth 39.The lower end of main shaft 3 is provided with the eccentric segment 28 that cooperates with eccentric opening 27 on the spheroid 4, be enclosed within the top of the eccentric segment 28 of main shaft 3 in the main shaft sleeve 9 behind the adding twice graphite-seal ring 26, after the assembling, with the eccentric opening 27 on the eccentric segment 28 insertion spheroids 4 of main shaft 3, thereby driving spheroid 4 when main shaft 3 rotates rotates, main shaft sleeve 9 is between main shaft 3 and valve body 1, be tightly connected by means of graphite-seal ring 26 between main shaft 3 and the main shaft sleeve 9, the sidewall of main shaft sleeve 9 is provided with ladder hole, also offer through hole on the valve body 1 corresponding with it, this through hole is connected with rinse mouth 42.Valve body 1 is provided with stuffing box 8 with the upper end of main shaft sleeve 9, is tightly connected by means of sealing gasket 17 between valve body 1 and the stuffing box 8.Load filler 14 between stuffing box 8 and the main shaft 3, stuffing box 8 upper ends are provided with Gland 7, be connected by means of bolt 20 between stuffing box 8 and the valve body 1, be connected by means of stay bolt 23 between Gland 7 and stuffing box 8 and the valve body 1, filler 14 is compressed by stay bolt 23 by Gland 7.Main shaft 3, stationary axle 11 surperficial ceramic coated materials.Inlet 36 1 sides of valve body 1 compress by bolt 18 by means of sealing gasket 16 with end-cap assembly 2 and are connected.
Shown in 6,7, welding base 35 is offered annular groove on the cavity madial wall of base 35 in the end cap 34 of described end-cap assembly 2, and this annular groove is placed stage clip 30.All have the coaxial inclined hole that communicates with the annular groove of base 35 on the sidewall of base 35 and end cap 34, this coaxial inclined hole is connected with rinse mouth 41.The upper ends pressure ring 31 of stage clip 30, place V-type filler 29 on the pressure ring 31 sidewall through holes, the cavity of base 35 is interior, the upper end of pressure ring 31 is provided with valve seat 32, valve seat 32 afterbodys also are equipped with graphite-seal ring 25, be tightly connected by means of graphite-seal ring 25 between valve seat 32 and the base 35, be tightly connected by means of V-type filler 29 between pressure ring 31 and the valve seat 32, be tightly connected by means of graphite-seal ring 25 between base 35 and the valve seat 32.Offer annular groove on the upper end outer wall of valve seat 32, all have the coaxial inclined hole that communicates with the annular groove of valve seat 32 on the sidewall of base 35 and end cap 34, this coaxial inclined hole is connected with rinse mouth 40.Sealing surface between valve seat 32 and the spheroid 4 is a ball-type sealing surface 33, surperficial coated with hard alloy.
Cylinder support 6 is arranged on the upper end of valve body 1, and double-acting cylinder formula actuator 5 is arranged on the upper end of cylinder support 6, and double-acting cylinder formula actuator 5 is arranged on the upper end of valve body 1 by cylinder support 6.Valve body 1, double-acting cylinder formula actuator 5 are connected and fixed with cylinder support 6 by bolt 19 and bolt 22, and main shaft 3 upper ends of passing cylinder support 6 are connected with double-acting cylinder formula actuator 5 by two keys 21.
Working procedure: during proper functioning, ball valve is installed in the middle of the system pipeline, and medium is from 36 inflows that enter the mouth, and the spheroid passage 38 of flowing through flows out valves from exporting 37.When system needed valve closing, end piston motion drive main shaft 3 and spheroid 4 rotations by control double-acting cylinder formula actuator 5 realized closing of valve.When system needed valve open, same the other end piston motion by control double-acting cylinder formula actuator 5 drove main shaft 3 and spheroid 4 backward rotation, realizes opening of valve.Simultaneously, valve rinse mouth 39,40,41,42 feeds cleaning medium and cleans main shaft 3, stationary axle 11, spheroid 4 and valve seat 32, guarantees that valve event is flexible.
Claims (9)
1. abrasion-proof hard seal metal ball valve, spheroid is set in the valve body, on the valve body, following two ends are respectively equipped with main shaft and the stationary axle that is connected with spheroid, the upper end of valve body is provided with stuffing box, be provided with filler between stuffing box and the main shaft, the Gland of filler upper end is connected with valve body, the entry end of valve body is provided with end-cap assembly, cylinder type actuator is arranged on the upper end of valve body by the cylinder support, main shaft is connected with cylinder type actuator, it is characterized in that: establish base in the end cap of described end-cap assembly, the annular groove of base is provided with stage clip, and the upper end of stage clip is provided with pressure ring, in the cavity of base valve seat is set, sealing surface between its valve seat and the spheroid is the ball-type sealing surface, on valve body with spheroid, main shaft, the position of stationary axle and valve seat correspondence is provided with rinse mouth.
2. abrasion-proof hard seal metal ball valve as claimed in claim 1 is characterized in that: all have on end cap and the base with base and be provided with the coaxial inclined hole that the annular groove of stage clip communicates, this coaxial inclined hole is connected with rinse mouth.
3. abrasion-proof hard seal metal ball valve as claimed in claim 1 is characterized in that: all have the coaxial inclined hole that communicates with annular groove that valve seat is provided with on end cap and the base, this coaxial inclined hole is connected with rinse mouth.
4. abrasion-proof hard seal metal ball valve as claimed in claim 1 is characterized in that: be equipped with coaxial horizontal hole on the main shaft sleeve in valve body and the valve body, this coaxial horizontal hole is connected with rinse mouth.
5. abrasion-proof hard seal metal ball valve as claimed in claim 1 is characterized in that: stationary axle is provided with vertical through hole, and this vertical through hole is connected with rinse mouth.
6. abrasion-proof hard seal metal ball valve as claimed in claim 1 is characterized in that: the main shaft lower end is provided with eccentric segment, and the eccentric opening that itself and spheroid upper end are provided with is connected, and drives spheroid when main shaft rotates and rotates.
7. abrasion-proof hard seal metal ball valve as claimed in claim 1 is characterized in that: main shaft, stationary axle and valve seat adopt double sealing to be connected.
8. as claim 1 or 7 described abrasion-proof hard seal metal ball valves, it is characterized in that: pressure ring is provided with the V-type filler, is connected by means of the V-type packing seal between pressure ring and the valve seat, is tightly connected by means of graphite-seal ring between base and the valve seat.
9. abrasion-proof hard seal metal ball valve as claimed in claim 1 is characterized in that: main shaft, the ceramic coated material in stationary axle surface; Coated with hard alloy on the ball-type sealing surface between valve seat and the spheroid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101463778A CN100501210C (en) | 2007-09-07 | 2007-09-07 | Abrasion-proof hard seal metal ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101463778A CN100501210C (en) | 2007-09-07 | 2007-09-07 | Abrasion-proof hard seal metal ball valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101109457A CN101109457A (en) | 2008-01-23 |
| CN100501210C true CN100501210C (en) | 2009-06-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101463778A Active CN100501210C (en) | 2007-09-07 | 2007-09-07 | Abrasion-proof hard seal metal ball valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN100501210C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101581375A (en) * | 2009-06-26 | 2009-11-18 | 昆山维萨阀门有限公司 | Metal hard seal ball valve |
| CN103711926B (en) * | 2012-10-05 | 2016-03-23 | 上海神通企业发展有限公司 | A kind of Coal Chemical Industry band purging, the lock slag of Rinsing unit, lock hopper valve |
| CN103542124A (en) * | 2013-11-01 | 2014-01-29 | 江苏金晟元特种阀门有限公司 | Pneumatic block valve for ammonia |
| CN105333172B (en) * | 2015-12-01 | 2016-10-12 | 超达阀门集团股份有限公司 | A kind of anti-blocking wear resistance ball valve of anti-sticking |
| CN108468828A (en) * | 2018-07-03 | 2018-08-31 | 浙江金浦实业有限公司 | High-performance automatically controls lock slag valve |
| CN112923114A (en) * | 2021-02-20 | 2021-06-08 | 洛阳瑞华新能源技术发展有限公司 | Ball valve with flushing fluid cavity guide groove on inner wall of valve body |
-
2007
- 2007-09-07 CN CNB2007101463778A patent/CN100501210C/en active Active
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| Publication number | Publication date |
|---|---|
| CN101109457A (en) | 2008-01-23 |
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Address after: 100076 Beijing, Fengtai District, South Road, No. 1, Patentee after: Beijing Aerospace Petrochemical Technology and Equipment Engineering Corporation Address before: 100076 Beijing, Fengtai District, South Road, No. 1, Patentee before: Beijing Aerospace Petrochemical Technology and Equipment Engineering Corp. |