CN201973279U - High-sealing-performance plug valve - Google Patents
High-sealing-performance plug valve Download PDFInfo
- Publication number
- CN201973279U CN201973279U CN2010206712223U CN201020671222U CN201973279U CN 201973279 U CN201973279 U CN 201973279U CN 2010206712223 U CN2010206712223 U CN 2010206712223U CN 201020671222 U CN201020671222 U CN 201020671222U CN 201973279 U CN201973279 U CN 201973279U
- Authority
- CN
- China
- Prior art keywords
- sealing
- metal
- valve body
- valve
- cock
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims abstract description 44
- 239000002184 metal Substances 0.000 claims abstract description 22
- 238000012856 packing Methods 0.000 claims abstract description 20
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 16
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 16
- 210000004907 gland Anatomy 0.000 claims description 10
- 239000004519 grease Substances 0.000 abstract 1
- -1 polytetrafluoroethylene Polymers 0.000 abstract 1
- 239000000126 substance Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005495 investment casting Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
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- Details Of Valves (AREA)
Abstract
The utility model relates to a high-sealing-performance plug valve, which comprises a valve body. A plug cock is arranged inside the valve body, a bush is disposed between the plug cock and the valve body, a plug cock rod is arranged on the upper portion of the plug cock, a valve bonnet is disposed at the plug cock rod on the upper side of the valve body, a sealing structure is arranged inside the valve bonnet, a press cover is disposed on the upper side of the sealing structure, a sealing packing group is arranged on the lowest side of the sealing structure, a metal press ring is arranged on the sealing packing group, a metal sealing elastic gasket is disposed on the metal press ring, a metal sealing washer is arranged on the metal sealing elastic gasket, a PTFE (polytetrafluoroethylene) sealing ring is disposed on the metal sealing washer, a metal washer is arranged on the PTFE sealing ring, and a monitor grease injecting hole is arranged on the valve bonnet. The PTFE sealing packing group guarantees tight sealing of the plug cock rod, complete metal-to-metal contact for secondary sealing is realized by the aid of a close gap of a metal sealing ring, and the bush guarantees internal sealing and primary external sealing.
Description
Technical field
The utility model relates to a kind of stopcock structure, especially relates to a kind of stopcock with high sealing performance.
Background technique
Sealability is that a cutting valve substantially the most also is most important performance.Sealing and external sealed two-part in the sealing of valve divides.Interior sealing is the sealing between cock and the valve body; External sealed is between cock stem motive position and the valve gap, between valve body and the valve gap and the sealing between valve body and the pipeline point of attachment.Usually modal valve external sealed generally is gland type and gland nut formula on the market, and gland type is the most common in the said structure, but has certain risk of leakage in the practical application of special occasions, might bring certain potential safety hazard.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of satisfied different clients and the varying environment high sealing performance stopcock to the needs of seal request.
The technical scheme in the invention for solving the technical problem is: a kind of high sealing performance stopcock, comprise valve body, valve inner is provided with cock, be provided with lining between cock and the valve body, the cock stem that cock top is provided with, cock stem place above valve body is provided with valve gap, valve gap inside is provided with sealing configuration, the sealing configuration top is provided with gland, the below of described sealing configuration is provided with the stuffing box packing group, above the stuffing box packing group, be provided with the metal trim ring, above the metal trim ring, be provided with the metallic seal elastic washer, above the metallic seal elastic washer, be provided with metallic packing, above metallic packing, be provided with the PTFE seal ring, above the PTFE seal ring, be provided with metallic shim.
For valve is located with anti-misoperation, reduce the generation of contingency, described gland is provided with lock device.
Monitor for convenience and the interpolation greasing substance that described valve gap is provided with and monitors the greasing hole.
The beneficial effects of the utility model are: lock device can reduce contingency with the valve location with anti-misoperation; PTFE stuffing box packing group guaranteed and cock stem between tight seal, secondary seal utilizes the close clearance of metal trim ring to reach the contact fully of metal to metal; Lining has guaranteed interior sealing and first order external sealed; Valve gap is provided with and monitors the greasing hole, the convenient supervision and the interpolation greasing substance.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model valve gap.
Among the figure: 1, elastic metallic seal washer 2, valve gap 3, metal trim ring 4, stuffing box packing group 5, cock stem 6, metallic shim 7, PTFE seal ring 8, metallic packing 9, lining 10, valve body 11, gland 12, lock device 13, supervision greasing hole 14, cock
Embodiment
A kind of as shown in Figure 1 high sealing performance stopcock, comprise valve body 10, valve body 10 inside are provided with cock 14, be provided with lining 9 between cock 14 and the valve body 10, the cock stem 5 that cock 14 tops are provided with, cock stem 5 places above valve body 10 are provided with valve gap 2, valve gap 2 inside are provided with sealing configuration, the sealing configuration top is provided with gland 11, the below of described sealing configuration is provided with stuffing box packing group 4, above stuffing box packing group 4, be provided with metal trim ring 3, above metal trim ring 3, be provided with metallic seal elastic washer 1, above metallic seal elastic washer 1, be provided with metallic packing 8, above metallic packing 8, be provided with PTFE seal ring 7, above PTFE seal ring 7, be provided with metallic shim 6; Described gland 11 is provided with lock device 12.
Described as shown in Figure 2 valve gap 2 is provided with and monitors greasing hole 13, the convenient supervision and the interpolation greasing substance.
The lock device 12 of employing standard can reduce contingency with the valve location with anti-misoperation; Evagination enhancement mode PTFE stuffing box packing group 4 has guaranteed and the tight seal of 5 of cock stems that secondary seal utilizes the close clearance of metal trim ring 3 to reach the contact fully of metal to metal; Adopt PTFE lining 9 to guarantee interior sealing and first order external sealed.Muscle rib on the valve body 10 has been strengthened the sealing force of 14 of PTFE lining 9 and cocks; Cock stem 5 sealing provides and can regulate automatically, dual and independently PTFE add graphite combination packing, have the greasing of supervision hole 13; Valve gap 2 squeezes FTFE and Expanded graphite seal ring by full lining valve seal chamber dress and in addition mends sealing to reach tight double seal in lining 9 backs; The valve body 10 of precision casting can provide the dimensional accuracy of strictness to guarantee the coaxality of cock 14 and valve body 10, seals the unnecessary limit impulse force load of bringing thereby reduced when operation to primary seal and cock stem 5, has further promoted the sealability of valve.
Claims (3)
1. high sealing performance stopcock, comprise valve body (10), valve body (10) inside is provided with cock (14), be provided with lining (9) between cock (14) and the valve body (10), the cock stem (5) that cock (14) top is provided with, cock stem (5) in valve body (10) top locates to be provided with valve gap (2), valve gap (2) inside is provided with sealing configuration, the sealing configuration top is provided with gland (11), it is characterized in that: the below of described sealing configuration is provided with stuffing box packing group (4), be provided with metal trim ring (3) in the top of stuffing box packing group (4), be provided with metallic seal elastic washer (1) in the top of metal trim ring (3), be provided with metallic packing (8) in the top of metallic seal elastic washer (1), be provided with PTFE seal ring (7), be provided with metallic shim (6) in the top of PTFE seal ring (7) in the top of metallic packing (8).
2. high sealing performance stopcock according to claim 1 is characterized in that: described gland (11) is provided with lock device (12).
3. high sealing performance stopcock according to claim 1 and 2 is characterized in that: described valve gap (2) is provided with and monitors greasing hole (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206712223U CN201973279U (en) | 2010-12-21 | 2010-12-21 | High-sealing-performance plug valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206712223U CN201973279U (en) | 2010-12-21 | 2010-12-21 | High-sealing-performance plug valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201973279U true CN201973279U (en) | 2011-09-14 |
Family
ID=44578382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206712223U Expired - Lifetime CN201973279U (en) | 2010-12-21 | 2010-12-21 | High-sealing-performance plug valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201973279U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195944A (en) * | 2013-04-11 | 2013-07-10 | 浙江万龙机械有限公司 | Plug valve of seal structure |
-
2010
- 2010-12-21 CN CN2010206712223U patent/CN201973279U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195944A (en) * | 2013-04-11 | 2013-07-10 | 浙江万龙机械有限公司 | Plug valve of seal structure |
| CN103195944B (en) * | 2013-04-11 | 2015-08-12 | 浙江万龙机械有限公司 | A kind of stopcock of sealing configuration |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: FLUOROSEAL SPECIAL VALVE (SUZHOU) CO., LTD. Free format text: FORMER OWNER: SUZHOU KEDI FLUID CONTROL EQUIPMENT CO., LTD. Effective date: 20120419 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 215101 SUZHOU, JIANGSU PROVINCE TO: 215100 SUZHOU, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120419 Address after: Suzhou City, Jiangsu province 215100 Jinfeng Road No. 1319 Patentee after: FluoroSeal Special Valves (Suzhou) Co., Ltd. Address before: Wuzhong District Jinfeng Road Suzhou city Jiangsu province 215101 No. 1319 Patentee before: SUZHOU KEDI FLUID CONTROL EQUIPMENT CO., LTD. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110914 |
|
| CX01 | Expiry of patent term |