CN102720886A - Transmission rod sealing structure for valve - Google Patents
Transmission rod sealing structure for valve Download PDFInfo
- Publication number
- CN102720886A CN102720886A CN2011100775393A CN201110077539A CN102720886A CN 102720886 A CN102720886 A CN 102720886A CN 2011100775393 A CN2011100775393 A CN 2011100775393A CN 201110077539 A CN201110077539 A CN 201110077539A CN 102720886 A CN102720886 A CN 102720886A
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- CN
- China
- Prior art keywords
- sealing
- transmission rod
- valve
- ring
- drive link
- 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.)
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- Details Of Valves (AREA)
- Sealing Devices (AREA)
Abstract
The present invention belongs to the technical field of valve transmission rod sealing, and specifically relates to a transmission rod sealing structure for a valve. The transmission rod sealing structure is characterized in that: the transmission rod sealing structure comprises a transmission rod with a crossette disposed in a[the] middle portion of the transmission rod, an upper pressing sleeve and a lower pressing sleeve jacketing the transmission rod, and a press ring nut and a press ring, wherein an upper sealing ring is disposed between the crossette and the press ring nut, a lower sealing ring is disposed between the crossette and the press ring, and a rhombic sealing ring is disposed between the upper pressing sleeve and the lower pressing sleeve. Sealing components are two fluoroplastic sealing rings and one rhombic rubber sealing ring, together three seals. The sealing rings which are made of fluoroplastic materials and the transmission rod are in a plane sealing, for having smaller friction between the sealing rings and the transmission rod after axial sealing force is applied. The rhombic rubber sealing ring and the transmission rod are in a line seal, belonging to a pressure self-sealing and having sealing reliability. The transmission rod sealing structure for a valve can ensure a long-term and reliable sealing of the transmission rod on the premise of not affecting movement flexibility of the valve.
Description
Technical field
The present invention relates to valve drive link technical field of sealing technology, be specifically related to a kind of drive link sealing configuration of valve.
Background technique
90 ° of turning valves drive drive link through operating mechanism and do 90 ° of revolutions, drive seal element by drive link again, accomplish the open and close action of valve.The sealing configuration of this drive link must guarantee valve no matter in static or switching motion process, all should seal reliably, and is arranged long working life.The sealing configuration of existing drive link, the sealing that has is better, but working life is not long, and considering of having increases the service life, and but can not realize better seal property.
Summary of the invention
The object of the present invention is to provide a kind of good airproof performance, and working life is than the drive link sealing configuration of long valve.
Realize the technological scheme of the object of the invention:
A kind of drive link sealing configuration of valve; Comprise that the middle part is provided with the drive link of convex shoulder; Be sleeved on last gland and following gland on the drive link, and pressure ring nut and pressure ring, seal ring be provided with between convex shoulder and the pressure ring nut; Be provided with lower seal between convex shoulder and the pressure ring, between last gland and the following gland rhombus seal ring be installed.
The drive link sealing configuration of aforesaid a kind of valve, upper and lower seal ring adopt polytetrafluoroethylmaterial material to process.
The drive link sealing configuration of aforesaid a kind of valve, the rhombus seal ring adopts the material of anti-the fluorine rubber to process.
Effect of the present invention is: Sealing is two fluoroplastic seal rings and a rhombus rubber seal, altogether three seals.Be plane sealing between seal ring that employing fluoroplastic material is processed and the drive link, being convenient to has less frictional force after applying axis sealing and between the drive link; Be linear sealing between rhombus rubber seal and drive link, belong to the pressure self-tightening sealing, sealing is reliable.This structure can guarantee the sealing reliably and with long-term at drive link place under the impregnable prerequisite of the dexterity of action of valve.
Description of drawings
Fig. 1 is the drive link sealed structural representation of a kind of valve provided by the present invention.
Among the figure: 1. drive link; 2. convex shoulder; 3. go up gland; 4. descend gland; 5. pressure ring nut; 6. pressure ring; 7. go up seal ring; 8. lower seal; 9. rhombus seal ring.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
As shown in Figure 1; The drive link sealing configuration of a kind of valve of the present invention comprises that the middle part is provided with the drive link 1 of convex shoulder 2; Be sleeved on last gland 3 and following gland 4 on the drive link 1, and pressure ring nut 5 and pressure ring 6, seal ring 7 be provided with between convex shoulder 2 and the pressure ring nut 5; Be provided with lower seal 8 between convex shoulder 2 and the pressure ring 6, between last gland 3 and the following gland 4 rhombus seal ring 9 be installed.
During the valve assembling, through pressure ring nut 5, pressure ring 6, lower seal 8 and last seal ring 7 are pressed on respectively on the drive link 1, form each road, the second road motive sealing pair, promptly dynamic radial seal is secondary; Last seal ring 7 is all selected the teflon that sealing is better, friction factor is little for use with lower seal 8 materials.Rhombus seal ring 9 is installed between gland 3 and the following gland 4, and it is secondary that its internal diameter and drive link 1 external diameter constitute the 3rd road motive sealing, and promptly axially motive sealing is secondary; The anti-fluorine rubber of rhombus seal ring 9 material selection good seal performance.
Above-mentioned twice dynamic radial seal is with the axially combination of motive sealing; Avoided to realizing dynamic radial seal; The situation that the driving torque that the teflin ring overvoltage possibly caused is excessive, the seal failure of material cold flow, sealing life are shortened can improve the valve seal performance under the prerequisite that guarantees the valve event flexibility and reliability.
Be able to proof through product comparative trial and destructive test: the valve that increases the anti-viton seal ring of rhombus; Axial favorable sealing property under the condition that only needs the increase axial pressing force, technical performance indexs such as the flexibility of valve is unaffected, keying speed, sealing member material life-span all can meet or surpass the design objective requirement.In production in batches, use and also obtain comparatively satisfied effect, can in the valve of homogeneous structure, be applicable.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Belong within the scope of claim of the present invention and equivalent technologies thereof if these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (3)
1. the drive link sealing configuration of a valve; Comprise that the middle part is provided with the drive link (1) of convex shoulder (2); Be sleeved on last gland (3) and following gland (4) on the drive link (1), and pressure ring nut (5) and pressure ring (6), it is characterized in that: be provided with seal ring (7) between convex shoulder (2) and the pressure ring nut (5); Be provided with lower seal (8) between convex shoulder (2) and the pressure ring (6), between last gland (3) and the following gland (4) rhombus seal ring (9) be installed.
2. according to the drive link sealing configuration of the described a kind of valve of claim 1, it is characterized in that: described upper and lower seal ring (7,8) adopts polytetrafluoroethylmaterial material to process.
3. according to the drive link sealing configuration of the described a kind of valve of claim 1, it is characterized in that: described rhombus seal ring (9) adopts the material of anti-the fluorine rubber to process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110077539.3A CN102720886B (en) | 2011-03-30 | 2011-03-30 | A kind of drive link hermetically-sealed construction of valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110077539.3A CN102720886B (en) | 2011-03-30 | 2011-03-30 | A kind of drive link hermetically-sealed construction of valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102720886A true CN102720886A (en) | 2012-10-10 |
| CN102720886B CN102720886B (en) | 2016-05-18 |
Family
ID=46946720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110077539.3A Active CN102720886B (en) | 2011-03-30 | 2011-03-30 | A kind of drive link hermetically-sealed construction of valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102720886B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112577849A (en) * | 2020-12-14 | 2021-03-30 | 西安近代化学研究所 | Explosive isothermal thermal decomposition pressure measuring device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3425557A1 (en) * | 1984-07-11 | 1986-01-16 | Chemat GmbH Armaturen für Industrie- und Nuklearanlagen, 7592 Renchen | Stuffing-box nut with integrated spring element |
| CN2069946U (en) * | 1990-08-29 | 1991-01-23 | 何理泉 | Self-adjusting cavity sealing ring |
| JP2000088139A (en) * | 1998-07-17 | 2000-03-31 | Kubota Corp | Shaft seal part structure of valve |
| CN2429698Y (en) * | 2000-06-25 | 2001-05-09 | 陈金明 | Dual sealed valve |
| CN202032163U (en) * | 2011-03-30 | 2011-11-09 | 中核苏阀科技实业股份有限公司 | Transmission rod sealing structure of valve |
-
2011
- 2011-03-30 CN CN201110077539.3A patent/CN102720886B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3425557A1 (en) * | 1984-07-11 | 1986-01-16 | Chemat GmbH Armaturen für Industrie- und Nuklearanlagen, 7592 Renchen | Stuffing-box nut with integrated spring element |
| CN2069946U (en) * | 1990-08-29 | 1991-01-23 | 何理泉 | Self-adjusting cavity sealing ring |
| JP2000088139A (en) * | 1998-07-17 | 2000-03-31 | Kubota Corp | Shaft seal part structure of valve |
| CN2429698Y (en) * | 2000-06-25 | 2001-05-09 | 陈金明 | Dual sealed valve |
| CN202032163U (en) * | 2011-03-30 | 2011-11-09 | 中核苏阀科技实业股份有限公司 | Transmission rod sealing structure of valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112577849A (en) * | 2020-12-14 | 2021-03-30 | 西安近代化学研究所 | Explosive isothermal thermal decomposition pressure measuring device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102720886B (en) | 2016-05-18 |
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| C14 | Grant of patent or utility model | ||
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