CN202418668U - Reversely-sealed valve capable of replacing packing on line - Google Patents
Reversely-sealed valve capable of replacing packing on line Download PDFInfo
- Publication number
- CN202418668U CN202418668U CN2011205797661U CN201120579766U CN202418668U CN 202418668 U CN202418668 U CN 202418668U CN 2011205797661 U CN2011205797661 U CN 2011205797661U CN 201120579766 U CN201120579766 U CN 201120579766U CN 202418668 U CN202418668 U CN 202418668U
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- Prior art keywords
- valve
- valve body
- gland
- packing
- valve rod
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- Expired - Fee Related
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Abstract
A reversely-sealed valve capable of replacing packing on line consists of a valve rod, a hand wheel, a valve rod nut, a packing gland, a gland bolt, a gasket, a gland nut, a packing, an upper valve body, an upper sealing surface, a lower valve body and a valve plate; the valve rod nut is connected with the upper valve body; the hand wheel is connected with the valve rod nut through key fit; the packing gland is connected with the upper valve body through the gland bolt, the gasket and the gland nut; the upper valve body is connected with the lower valve body through the bolt; the upper end of the valve rod is in threaded connection with the valve rod nut; the middle part of the valve rod penetrates through the packing box of the upper valve body and the packing gland; the lower part of the valve rod is connected with the valve plate; the packing is installed between the packing box of the upper valve body and the valve rod; and the reversely-sealed valve capable of replacing the packing on line is characterized in that an inner conical surface is arranged below the packing box of the upper valve body, an outer conical surface is arranged below the valve rod, and the conical angle of the inner conical surface is larger than the conical angle of the outer conical surface. The reversely-sealed valve capable of replacing the packing on line can ensure the safety for replacing the sealing packing on line.
Description
Technical field
The utility model belongs to valve and makes the field, but is specifically related to a kind of back seal valve of on-line replacing filler.
Background technique
Valve rod and the valve body of conventional valve are fixed with gland, for anti-heads, between valve rod and the valve body filler are housed, because valve is in long-term using process, valve rod causes wearing and tearing and filler overlong time to produce to filler and wears out, cause leakage easily.The processing method of conventional fillers letter leakage is that employing compresses filler or shutdown back dismounting valve replacing filler is prevented heads.But in the field that continuity is produced, shutdown will inevitably influence manufacturing efficiency, brings unnecessary loss to commercial production.
Summary of the invention
To the defective that exists in the existing techniques, but the purpose of the utility model is to provide a kind of back seal valve of on-line replacing filler, and this valve can be with and be pressed in line replacing stuffing box packing, has excellent sealing performance, guarantees on-line replacing stuffing box packing Security.
The utility model is realized through following technological scheme:
But a kind of back seal valve of on-line replacing filler; Form by valve rod, handwheel, Stem Mut, Gland, gland bolt, pad, gland nut, filler, upper valve body, last sealing surface, following valve body, valve plate; It is characterized in that below the stuffing box of upper valve body, being provided with internal conical surface; Below valve rod, be provided with outer conical surface, the cone angle of internal conical surface is greater than the cone angle of outer conical surface.
Described Stem Mut is connected with upper valve body; Handwheel cooperates through key and is connected with Stem Mut, and Gland is connected with upper valve body through gland bolt, pad, gland nut, and upper valve body is connected with following valve body through bolt; The valve rod upper end links to each other with Stem Mut through being threaded; Stuffing box, the Gland of upper valve body passed in the centre, and the below is connected with valve plate, and filler is installed between the stuffing box and valve rod of valve body.
Implement the utility model and carry out following steps:
1, when valve packing need be changed; The counter-rotating handwheel; Valve rod is risen, and with till the internal conical surface of upper valve body closely contacts, at this moment the outer conical surface of valve rod convex platform is wedged the internal conical surface of upper valve body until the outer conical surface of the boss on the valve rod; Play the back seal effect, prevent that the valve pocket inner fluid from leaking;
2, the dismounting gland bolt is opened Gland, behind the replacing filler, again gland and upper valve body is connected;
3, be rotated in the forward handwheel, valve gets final product proper functioning.
Implement the beneficial effect of the utility model:
But the back seal valve of a kind of on-line replacing filler that employing the utility model provides; Can be implemented in line and change filler; Do not need other auxiliary valve or shut down to change filler, practiced thrift the production time, reduced and unnecessary changed the loss that filler causes because of shutting down.
Description of drawings
Fig. 1 the utility model structural drawing;
Schematic representation when Fig. 2 the utility model is changed filler.
In Fig. 1: valve body, 14-valve plate under 1-valve rod, 2-handwheel, 3-Stem Mut, 4-Gland, 5-gland bolt, sincere of 6-, 7-gland nut, 8-filler, 9-upper valve body, the last sealing surface of 10-, 11-taper platform, 12-lower sealing surface, the 13-.
Embodiment
Implementation detail below in conjunction with Figure of description further explain the utility model:
In Fig. 1: but the utility model provides a kind of back seal valve of on-line replacing filler; Form by valve rod 1, handwheel 2, Stem Mut 3, Gland 4, gland bolt 5, pad 6, gland nut 7, filler 8, upper valve body 9, valve plate 14; Below the stuffing box of upper valve body 9, being provided with internal conical surface promptly goes up sealing surface 11, below valve rod, is provided with taper platform 11; The outer conical surface of taper platform is a lower sealing surface 12, and the cone angle of last sealing surface 10 is greater than the cone angle of lower sealing surface 12.
Stem Mut 3 is connected with upper valve body 9; Handwheel 2 cooperates through key and is connected with Stem Mut 3, and Gland 4 is connected with upper valve body 9 through gland bolt 5, pad 6, gland nut 7, and upper valve body 9 is connected with following valve body 13 through bolt; Valve rod 1 upper end links to each other with Stem Mut 3 through being threaded; Stuffing box, the Gland 4 of upper valve body passed in the centre, and the below is connected with valve plate 14, and filler 8 is installed between the stuffing box and valve rod 1 of valve body 9.
The utility model embodiment carries out following steps:
1, when valve packing need be changed; Counter-rotating handwheel 2; Valve rod 1 is risen, and is lower sealing surface 12 with till the internal conical surface of upper valve body 9 is promptly gone up sealing surface 10 tight contacts until the outer conical surface of the taper platform 11 on the valve rod 1, and at this moment the outer conical surface of the taper platform 11 on the valve rod 1 is wedged the internal conical surface of upper valve body 9; Play the back seal effect, prevent that the valve pocket inner fluid from leaking;
2, dismounting gland bolt 5 is opened Gland 4, behind the replacing filler 8, again Gland 4 and upper valve body 9 is connected;
3, be rotated in the forward handwheel 2, valve gets final product proper functioning.
The preferred version that the utility model provided is: using internal conical surface on the upper valve body 9 promptly to go up sealing surface is 120 ° cone angle, and the outer conical surface of the taper platform 11 on the valve rod 1 is that lower sealing surface 12 is 90 ° of cone angles;
Other schemes that the utility model provides are: it is other cone angle that the internal conical surface on the use upper valve body 9 is promptly gone up sealing surface; The outer conical surface of the taper platform 11 on the valve rod 1 is lower sealing surface 12 other cone angles, as long as guarantee to go up the cone angle of the cone angle of sealing surface greater than lower sealing surface;
The utility model adopts the valve rod 1 by manufacturing of high-quality stainless steel and special thermal treatment technology, and increases the higher sealing position of design degree of finish at the polished rod position of traditional valve rod 1, is processed into 90 ° of conical surfaces, and good seal performance is wear-resistant, has increased the life-span of valve.
The utility model adopts optimal design valve gap back seal structure, and 90 ° of conical surface seal structural designs of tradition are become 120 ° of higher conical surfaces of degree of finish, meet more medium, pressure flow to and sealing principle.
The linearity of the utility model employing 90 ° of sealing surfaces of valve rod and 120 ° of sealing surfaces of valve gap fits the blocked valve cavity pressure, is implemented in to change under the situation with pressure in the valve pocket to damage filler, reduces and opens moment of torsion, makes light and safety more convenient to operate.
Claims (2)
1. but the back seal valve of an on-line replacing filler; Be made up of valve rod, handwheel, Stem Mut, Gland, gland bolt, pad, gland nut, filler, upper valve body, last sealing surface, following valve body, valve plate, it is characterized in that described Stem Mut is connected with upper valve body, handwheel cooperates through key and is connected with Stem Mut; Gland is connected with upper valve body through gland bolt, pad, gland nut; Upper valve body is connected with following valve body through bolt, and the valve rod upper end links to each other with Stem Mut through being threaded, and stuffing box, the Gland of upper valve body passed in the centre; The below is connected with valve plate, and filler is installed between the stuffing box and valve rod of valve body.
2. but the back seal valve of a kind of on-line replacing filler according to claim 1 is characterized in that below the stuffing box of upper valve body, being provided with internal conical surface, below valve rod, is provided with outer conical surface, and the cone angle of internal conical surface is greater than the cone angle of outer conical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205797661U CN202418668U (en) | 2011-12-08 | 2011-12-08 | Reversely-sealed valve capable of replacing packing on line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205797661U CN202418668U (en) | 2011-12-08 | 2011-12-08 | Reversely-sealed valve capable of replacing packing on line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202418668U true CN202418668U (en) | 2012-09-05 |
Family
ID=46743438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205797661U Expired - Fee Related CN202418668U (en) | 2011-12-08 | 2011-12-08 | Reversely-sealed valve capable of replacing packing on line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202418668U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103851256A (en) * | 2014-03-25 | 2014-06-11 | 济钢集团有限公司 | Push rod bolt and packing pressing structure |
| CN103982691A (en) * | 2014-05-30 | 2014-08-13 | 济钢集团有限公司 | Method for preventing valve from leaking under pressure without stopping production |
| CN108413121A (en) * | 2018-04-09 | 2018-08-17 | 中南焦作氨阀股份有限公司 | A kind of ammonia valve valve rod and valve cover sealing structure |
| CN110469714A (en) * | 2019-09-01 | 2019-11-19 | 永嘉企达知识产权咨询有限公司 | A kind of on-line maintenance gate valve |
| CN113605856A (en) * | 2021-08-11 | 2021-11-05 | 江苏宏泰石化机械有限公司 | Fracturing gas production wellhead valve with self-sealing structure |
-
2011
- 2011-12-08 CN CN2011205797661U patent/CN202418668U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103851256A (en) * | 2014-03-25 | 2014-06-11 | 济钢集团有限公司 | Push rod bolt and packing pressing structure |
| CN103982691A (en) * | 2014-05-30 | 2014-08-13 | 济钢集团有限公司 | Method for preventing valve from leaking under pressure without stopping production |
| CN108413121A (en) * | 2018-04-09 | 2018-08-17 | 中南焦作氨阀股份有限公司 | A kind of ammonia valve valve rod and valve cover sealing structure |
| CN110469714A (en) * | 2019-09-01 | 2019-11-19 | 永嘉企达知识产权咨询有限公司 | A kind of on-line maintenance gate valve |
| CN110469714B (en) * | 2019-09-01 | 2020-12-01 | 浙江慧博阀门科技有限公司 | Online maintenance gate valve |
| CN113605856A (en) * | 2021-08-11 | 2021-11-05 | 江苏宏泰石化机械有限公司 | Fracturing gas production wellhead valve with self-sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20121208 |