CN104089041B - The box-like hermetically-sealed construction of valve sets and method thereof - Google Patents
The box-like hermetically-sealed construction of valve sets and method thereof Download PDFInfo
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- CN104089041B CN104089041B CN201410332072.6A CN201410332072A CN104089041B CN 104089041 B CN104089041 B CN 104089041B CN 201410332072 A CN201410332072 A CN 201410332072A CN 104089041 B CN104089041 B CN 104089041B
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- valve
- pull bar
- ring
- packing
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
- F16K41/04—Spindle sealings with stuffing-box ; Sealing rings with at least one ring of rubber or like material between spindle and housing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
Abstract
The invention discloses the box-like hermetically-sealed construction of a kind of valve sets and method thereof. It comprises hold-down grid, filler pressing sleeve, four layers of packing, dust ring, connector, sealing ring, spring, adapter ring, valve seat, valve pull bar; Adapter ring is connected with connector bolt, connector and valve pull bar matched in clearance, valve seat is connected with adapter ring bolt, valve seat is connected with dust ring bolt, four layers of packing and valve pull bar interference fit, filler pressing sleeve and valve pull bar matched in clearance, hold-down grid and valve pull bar matched in clearance, spring empty set on valve pull bar, sealing ring and valve pull bar interference fit. The present invention not only intensity is high, heat-and corrosion-resistant, and antiscour, and coefficient of friction is low, and self-lubricating property is good, and has very high flexibility, resilience and unsteady performance. This structure has improved the sealing property of gate valve, and significantly reduces cylinder corrosion and stuck phenomenon, significantly promotes the service life of gate valve, effectively reduces practicality and the maintenance cost of valve.
Description
Technical field
The present invention relates to the box-like hermetically-sealed construction of a kind of valve sets and method thereof, particularly for the sealing of double valve plates gate valve.
Background technology
Sealing is good Yu the bad major criterion of gate valve. In order to prevent being entered cylinder by the medium of choked flow along valve pull bar, cause corrosion and the obstruction of cylinder interior, thereby affect the normal use of gate valve, therefore, gate valve must be accomplished good sealing.
Conventionally, the sealing of gate valve is realized by sealing ring and valve pull bar interference fit, but this encapsulating method is under the operating mode of high temperature, high-pressure medium, be easy to cause dielectric leakage and cause seal failure, and need to often change sealing ring, make the maintenance cost of gate valve increase, these problems are perplexing user always.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, the box-like hermetically-sealed construction of valve sets and method thereof are provided.
The box-like hermetically-sealed construction of a kind of valve sets comprises hold-down grid, filler pressing sleeve, four layers of packing, dust ring, connector, sealing ring, spring, adapter ring, valve seat, valve pull bar; Adapter ring is connected with connector bolt, connector and valve pull bar matched in clearance, valve seat is connected with adapter ring bolt, valve seat is connected with dust ring bolt, four layers of packing and valve pull bar interference fit, filler pressing sleeve and valve pull bar matched in clearance, hold-down grid and valve pull bar matched in clearance, spring empty set on valve pull bar, sealing ring and valve pull bar interference fit.
The ground floor of four layers of described packing and the 4th layer of employing carbon fiber packing, the second layer adopts polytetrafluoroethylene (PTFE) packing, and the 3rd layer adopts flexible graphite stuffing.
The box-like encapsulating method of valve sets of described structure is: liquid, the gas medium of sealing leak through dust ring, four layers of packing, sealing ring successively along valve pull bar;
Dust ring is connected with valve seat bolt, and with valve pull bar interference fit, stop liquid, the gas medium of leakage, realize sealing for the first time; Hold-down grid and filler pressing sleeve compress four layers of packing, and due to the effect of expanding with heat and contract with cold, spring plays the effect of thrust of regulating, and four layers of packing stop with valve pull bar interference fit the liquid, the gas medium that penetrate dust ring, realize for the second time and sealing; Sealing ring and valve pull bar interference fit, stop the liquid, the gas medium that penetrate four layers of packing, realizes sealing for the third time; Conventionally this three antiseep sealings, seal process is complete.
The effect intentionally that the present invention compared with prior art has is, not only intensity is high can to ensure packing for sealing, heat-and corrosion-resistant, antiscour, and coefficient of friction is low, and self-lubricating property is good, and there is very high flexibility, resilience and unsteady performance, the mixed fillers of soft graphite and polytetrafluoroethylene (PTFE), has significantly improved anti-shearing, the tensile property of packing, and is conducive to produce labyrinth effect. Being used in combination of four layers of packing and twice sealing ring, has significantly improved the sealing property of gate valve, and cylinder corrosion and stuck phenomenon greatly reduce, and have obviously increased the service life of gate valve, for user has saved maintenance cost greatly.
Brief description of the drawings
Fig. 1 is the schematic diagram of the box-like hermetically-sealed construction of valve sets;
In figure, hold-down grid 1, filler pressing sleeve 2, four layers of packing 3, dust ring 4, connector 5, sealing ring 6, spring 7, adapter ring 8, valve seat 9, valve pull bar 10.
Detailed description of the invention
As shown in Figure 1, the box-like hermetically-sealed construction of a kind of valve sets comprises hold-down grid 1, filler pressing sleeve 2, four layers of packing 3, dust ring 4, connector 5, sealing ring 6, spring 7, adapter ring 8, valve seat 9, valve pull bar 10; Adapter ring 8 is connected with connector 5 bolts, connector 5 and valve pull bar 10 matched in clearance, valve seat 9 is connected with adapter ring 8 bolts, valve seat 9 is connected with dust ring 4 bolts, four layers of packing 3 and valve pull bar 10 interference fit, filler pressing sleeve 2 and valve pull bar 10 matched in clearance, hold-down grid 1 and valve pull bar 10 matched in clearance, spring 7 empty sets on valve pull bar 10, sealing ring 6 and valve pull bar 10 interference fit.
The ground floor of four layers of described packing 3 and the 4th layer of employing carbon fiber packing, the second layer adopts polytetrafluoroethylene (PTFE) packing, and the 3rd layer adopts flexible graphite stuffing.
The box-like encapsulating method of valve sets of described structure is as follows:
Need the liquid, gas medium of sealing to leak through dust ring 4, four layers of packing 3, sealing ring 6 successively along valve pull bar 10;
Dust ring 4 is connected with valve seat 9 bolts, and with valve pull bar 10 interference fit, stop liquid, the gas medium of leakage, realize sealing for the first time; Hold-down grid 1 and filler pressing sleeve 2 compress four layers of packing 3, and due to the effect of expanding with heat and contract with cold, spring 7 plays the effect that regulates thrust, and four layers of packing 3 stop with valve pull bar 10 interference fit the liquid, the gas medium that penetrate dust ring 4, realize sealing for the second time; Sealing ring 6 and valve pull bar 10 interference fit, stop the liquid, the gas medium that penetrate four layers of packing 3, realizes sealing for the third time; Conventionally this three antiseep sealings, realize the liquid to needs sealing, the sealing of gas medium.
Claims (1)
1. the box-like encapsulating method of the valve sets of the box-like hermetically-sealed construction of valve sets, the box-like hermetically-sealed construction of described valve sets comprises hold-down grid (1), filler pressing sleeve (2), four layers of packing (3), dust ring (4), connector (5), sealing ring (6), spring (7), adapter ring (8), valve seat (9), valve pull bar (10); Adapter ring (8) is connected with connector (5) bolt, connector (5) and valve pull bar (10) matched in clearance, valve seat (9) is connected with adapter ring (8) bolt, valve seat (9) is connected with dust ring (4) bolt, four layers of packing (3) and valve pull bar (10) interference fit, filler pressing sleeve (2) and valve pull bar (10) matched in clearance, hold-down grid (1) and valve pull bar (10) matched in clearance, spring (7) empty set is upper at valve pull bar (10), sealing ring (6) and valve pull bar (10) interference fit;
It is characterized in that: the liquid of sealing, gas medium pass through successively dust ring (4), four layers of packing (3), sealing ring (6) along valve pull bar (10) and leaks;
Dust ring (4) is connected with valve seat (9) bolt, and with valve pull bar (10) interference fit, stop liquid, the gas medium of leakage, realize sealing for the first time; Hold-down grid (1) and filler pressing sleeve (2) compress four layers of packing (3), due to the effect of expanding with heat and contract with cold, spring (7) plays the effect that regulates thrust, four layers of packing (3) stop with valve pull bar (10) interference fit the liquid, the gas medium that penetrate dust ring (4), realize sealing for the second time; Sealing ring (6) and valve pull bar (10) interference fit, stop the liquid, the gas medium that penetrate four layers of packing (3), realizes sealing for the third time; Conventionally this three antiseep sealings, seal process is complete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410332072.6A CN104089041B (en) | 2014-07-14 | 2014-07-14 | The box-like hermetically-sealed construction of valve sets and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410332072.6A CN104089041B (en) | 2014-07-14 | 2014-07-14 | The box-like hermetically-sealed construction of valve sets and method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104089041A CN104089041A (en) | 2014-10-08 |
| CN104089041B true CN104089041B (en) | 2016-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410332072.6A Active CN104089041B (en) | 2014-07-14 | 2014-07-14 | The box-like hermetically-sealed construction of valve sets and method thereof |
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| CN (1) | CN104089041B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224579A (en) * | 2016-08-28 | 2016-12-14 | 淳安千岛湖科利达耐磨阀门有限公司 | Oscillatory valve |
| CN106370594B (en) * | 2016-10-14 | 2019-02-01 | 河南科技大学 | Packing-leaf spring floating seal system core technical parameter measuring method and device |
| CN109883624B (en) * | 2019-04-11 | 2024-03-15 | 招商局重庆交通科研设计院有限公司 | Water tightness test equipment adopting cylindrical surface design |
| CN112096874B (en) * | 2020-08-31 | 2022-11-08 | 东台市光明机械密封有限公司 | High-wear-resistance double-end-face mechanical sealing element and machining process thereof |
| CN112297360A (en) * | 2020-10-26 | 2021-02-02 | 王书旭 | Injection mold that breaks away from fast |
| CN112377277A (en) * | 2020-11-27 | 2021-02-19 | 大唐陕西发电有限公司 | Push-pull rod sealing structure of steam turbine |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5238252A (en) * | 1990-01-18 | 1993-08-24 | Eisenwerk Heinrich Schilling Gmbh & Co. | Shut-off fittings with a sealing device |
| US5791629A (en) * | 1996-10-31 | 1998-08-11 | Fisher Controls International, Inc. | Bushing-less stem guided control valve |
| US8136792B2 (en) * | 2009-06-19 | 2012-03-20 | Equistar Chemicals, L.P. | Double containment valve system |
| CN201661763U (en) * | 2010-03-11 | 2010-12-01 | 浙江固特气动机械有限公司 | Gate valve |
| CN201925592U (en) * | 2010-09-13 | 2011-08-10 | 秦皇岛中青冶金阀门有限公司 | Oil chamber type gate valve sealing structure |
| CN102330820B (en) * | 2011-08-24 | 2012-10-31 | 江苏华青流体科技有限公司 | Mechanical seal device |
| CN203948678U (en) * | 2014-07-14 | 2014-11-19 | 浙江固特气动机械有限公司 | The box-like sealing configuration of a kind of valve sets |
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| CN104089041A (en) | 2014-10-08 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 324401 No. 18, Shao Lu, town, Quzhou Town, Longyou County, Zhejiang, China Applicant after: ZHEJIANG GUTE PNEUMATIC MACHINERY Co.,Ltd. Address before: 324401 No. 18, Shao Lu, town, Quzhou Town, Longyou County, Zhejiang, China Applicant before: ZHEJIANG GUTE PNEUMATIC MACHINERY Co.,Ltd. |
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| COR | Change of bibliographic data | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Valve combination sealing structure and its method Effective date of registration: 20230925 Granted publication date: 20160518 Pledgee: Zhejiang Longyou rural commercial bank Limited by Share Ltd. Pledgor: ZHEJIANG GUTE PNEUMATIC MACHINERY Co.,Ltd. Registration number: Y2023330002178 |