CN201078486Y - Abrasion-proof hard tight seal metal ball valve - Google Patents
Abrasion-proof hard tight seal metal ball valve Download PDFInfo
- Publication number
- CN201078486Y CN201078486Y CNU2007201763354U CN200720176335U CN201078486Y CN 201078486 Y CN201078486 Y CN 201078486Y CN U2007201763354 U CNU2007201763354 U CN U2007201763354U CN 200720176335 U CN200720176335 U CN 200720176335U CN 201078486 Y CN201078486 Y CN 201078486Y
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- valve
- abrasion
- valve body
- main shaft
- valve seat
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Abstract
The utility model provides an abrasion-proof hard seal metal ball valve; wherein, a ball body is arranged in a valve body and is connected with a spindle and a fixed shaft, a stuffing box is arranged on the upper end of the valve body, a end cap unit is positioned at the inlet end of the valve body, an air cylinder type actuator is arranged on the upper end of the valve body through an air cylinder support, the spindle is connected with the air cylinder type actuator, a base is positioned in the end cap of the end cap unit, the annular groove of the base is provided with a pressure spring, a clamping ring is arranged at the upper end of the pressure spring, a valve seat is positioned in the chamber of the base, and the sealing surface between the valve seat and the ball body is a spherical sealing surface; the eccentric section at the lower end of the spindle is fitly connected with the eccentric section at the upper end of the ball body; the spindle, the fixed shaft and the valve seat adopt double sealing; a plurality of wash ports are designed on the valve body and used to flush the ball body, the valve seat, the spindle and the fixed shaft. The utility model has the advantages of high temperature resistance, high pressure resistance, corrosion prevention, fine sealing performance, flexible action and so on and can be widely applied in the coal 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. rinse mouth; 6. rinse mouth; 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. rinse mouth; 40. rinse mouth.
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 43 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 43 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 43, 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 4 afterbodys also are equipped with graphite-seal ring 25, be tightly connected by means of graphite-seal ring 25 between valve seat 4 and the base 35, be tightly connected by means of V-type filler 29 between pressure ring 31 and the valve seat 4, be tightly connected by means of graphite-seal ring 25 between base 35 and the valve seat 4.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 43, 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.
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 (10)
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, and 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, 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.
2. abrasion-proof hard seal metal ball valve as claimed in claim 1 is characterized in that: on the valve body, be provided with rinse mouth on the position corresponding with spheroid, main shaft, stationary axle and valve seat.
3. abrasion-proof hard seal metal ball valve as claimed in claim 1 or 2 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.
4. abrasion-proof hard seal metal ball valve as claimed in claim 1 or 2 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.
5. abrasion-proof hard seal metal ball valve as claimed in claim 1 or 2 is characterized in that: be equipped with coaxial horizontal hole on the axle sleeve in valve body and the valve body, this coaxial horizontal hole is connected with rinse mouth.
6. abrasion-proof hard seal metal ball valve as claimed in claim 1 or 2 is characterized in that: stationary axle is provided with vertical through hole, and this is provided with vertical through hole and is connected with rinse mouth.
7. 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.
8. 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.
9. as claim 1 or 8 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.
10. 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 |
|---|---|---|---|
| CNU2007201763354U CN201078486Y (en) | 2007-09-07 | 2007-09-07 | Abrasion-proof hard tight seal metal ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201763354U CN201078486Y (en) | 2007-09-07 | 2007-09-07 | Abrasion-proof hard tight seal metal ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201078486Y true CN201078486Y (en) | 2008-06-25 |
Family
ID=39570548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201763354U Expired - Lifetime CN201078486Y (en) | 2007-09-07 | 2007-09-07 | Abrasion-proof hard tight seal metal ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201078486Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968102A (en) * | 2014-04-22 | 2014-08-06 | 章华 | Ball valve metal valve seat with elastic compensation function and pressure auxiliary sealing function |
-
2007
- 2007-09-07 CN CNU2007201763354U patent/CN201078486Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968102A (en) * | 2014-04-22 | 2014-08-06 | 章华 | Ball valve metal valve seat with elastic compensation function and pressure auxiliary sealing function |
| CN103968102B (en) * | 2014-04-22 | 2016-09-14 | 章华 | There is the ball valve metal seat valve of elastic compensating and pressure assisted seal function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20070907 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |