CN2231350Y - Leak-proof stop valve - Google Patents
Leak-proof stop valve Download PDFInfo
- Publication number
- CN2231350Y CN2231350Y CN 95215781 CN95215781U CN2231350Y CN 2231350 Y CN2231350 Y CN 2231350Y CN 95215781 CN95215781 CN 95215781 CN 95215781 U CN95215781 U CN 95215781U CN 2231350 Y CN2231350 Y CN 2231350Y
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- CN
- China
- Prior art keywords
- valve
- spool
- utility
- valve rod
- model
- 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 - Fee Related
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Abstract
The utility model belongs to a leak-proof stop valve, and the utility model solves the insufficiency that the sealing materials of the existing stop valve are easy to cause leakage and mechanical damage through the long-term use. The utility model is characterized in that a valve core and a valve rod arranged in the inner cavity of the valve body are arranged in metal corrugated pipes. The upper end and the lower end of the corrugated pipes are respectively welded into one body with the valve core and partition plates, and an isolation sealing face is installed to form between the valve body and a valve cover through the partition plates, in order to isolate the contact of the valve rod and a media. The utility model has good sealing performance, and the utility model has no leakage outsides. The utility model is suitable for working in the petroleum, the chemical industry, the metallurgy, etc.
Description
The utility model relates to a kind of stop valve, is a kind of with the operating mechanism of screw axis and the non-leakage stopping valve of shaft sealing specifically.
At present, the valve that the Domestic market is sold and used all adopts compacted form to reduce the gap at Sealing and valve rod place as the valve rod of poppet valve, band screw axis mechanism and the shaft sealing between valve body, to reach the purpose of sealing.But because valve is being opened in the using process repeatedly, cause the gap at Sealing and valve rod place to increase, this moment, medium will be from valve lever clearance to external leakage.So repeatedly compress maintenance, thereby the destruction that causes valve brings loss for normal operation.
The purpose of this utility model provides a kind of improved non-leakage stopping valve, utilizes the valve rod of body cavity and the medium in the valve body to form the sealing isolation, has realized the leak free performance of valve stem seal.
For achieving the above object, technical solution of the present utility model realizes by following measure: have and insert in the metal bellows valve rod of body cavity setting and the spool end of flexible connection integrally welded with spool and demarcation strip respectively by the upper and lower end of bellows, and be arranged between valve body and the valve gap by demarcation strip, form the isolating seal face, in order to realizing shaft sealing, the contacting this and do not leak of control valve rod and medium to nothing.
The utlity model has following characteristics and effect:
1, the whole control mechanism simplicity of design of non-leakage stopping valve, employing have the metal bellows sealing valve rod of scalability and contacting of medium, have realized not having and have leaked; Replaced the sealing means that other sealing material pressure locks, the deficiency of the mechanical failure that makes it to cause.
2, because valve body and valve cover chamber have adopted demarcation strip and bellows sealing, constituted to divide and isolated sealing surface, body cavity and upper end valve gap is isolated, avoided the body cavity medium to leak by the valve lever clearance place.
3, one of the installation on the hole of body cavity is the valve core case of planar end surface, has guaranteed to cooperate with the end face sealing of spool.
Description of drawings:
Fig. 1 is the structural drawing of non-leakage stopping valve.
Embodiment is described specifically in conjunction with the utility model accompanying drawing:
Show the overall structure of non-leakage stopping valve by Fig. 1.The bulb position of valve rod 10 is installed in spool 8 holes, and integrally welded by split washer 9 and spool 8, its valve rod 10 is freely rotated in spool 8 holes.It is fixing to adopt an end of telescopic metal bellows 11 to insert on spool 8 external diameters welding, the other end (i.e. upper end) is fixed with the chimb welding of turning over of an annulus demarcation strip 6 internal diameters, make it demarcation strip 6, spool 8 and valve rod 10 are formed one, be installed in valve body 12 inner chambers, make its branch utilize dividing plate 6 to be arranged between valve body 12 and the upper end valve gap 5, form the isolating seal face, in order to realize the shaft sealing of valve rod 10, control valve rod 10 contacts with medium.And valve body 12 by hole place valve core case is set, guarantee to cooperate with the sealing of spool 8.Make fixedlying connected of valve body 12 and valve gap 5 by bolt 13.With on the valve rod 10 that upper end valve gap 5 cooperates packing ring 4, O type circle 3 and guide sleeve 2 are installed respectively and handwheel 1 is equipped with in the upper end, limit the lifting and the guiding of spiral valve rod mechanism in order to control.
During user mode, anticlockwise handwheel 1 is cooperated with the spiral of 5 of valve gaps by valve rod 10 shaft shoulder positions, and valve rod 10 rises together with spool 8, opens by the hole, and the line pipe 11 of this moment is in compressive state; Otherwise during dextrorotation handwheel 1, valve rod 10 descends and valve core case 7 closures together with spool 8, and the bellows 10 of this moment is in extended configuration.
Claims (4)
1, non-leakage stopping valve, comprise by the handwheel screw axis operating mechanism that valve rod and spool are formed is installed in the valve body, by bolt valve gap and valve rod are enclosed in the valve body and constitute, it is characterized in that having valve rod (10) that valve body (12) inner chamber is provided with and spool (8) end that flexibly connects, insert in the metal bellows (11); Upper and lower end by bellows (11) is integrally welded with spool (8) and demarcation strip (6) respectively, and is arranged between valve gap (5) and valve body (12) by dividing plate (6), forms the isolating seal face, in order to contacting of isolated valve rod (10) and medium.
2, by wanting profit requirement 1 described non-leakage stopping valve, it is characterized in that demarcation strip (6) has turned over chimb for circular internal orifice dimension, cooperate with metal bellows (11) external diameter, and the welding one.
3, by the described non-leakage stopping valve of claim 1, it is characterized in that valve body (12) inner chamber is provided with valve core case (7) corresponding to spool (8) bottom by the hole, the end face of its valve core case (7) cooperates sealing with spool (8) lower end surface.
4,, it is characterized in that the valve gap (5) and the axial valve clearance end of valve rod (10) are provided with sealing guide sleeve (2) by the described non-leakage stopping valve of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95215781 CN2231350Y (en) | 1995-07-03 | 1995-07-03 | Leak-proof stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95215781 CN2231350Y (en) | 1995-07-03 | 1995-07-03 | Leak-proof stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2231350Y true CN2231350Y (en) | 1996-07-17 |
Family
ID=33865039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95215781 Expired - Fee Related CN2231350Y (en) | 1995-07-03 | 1995-07-03 | Leak-proof stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2231350Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100371638C (en) * | 2003-07-29 | 2008-02-27 | 余金权 | Corrugated pipe valve |
| CN114413058A (en) * | 2022-01-25 | 2022-04-29 | 济南新材料产业技术研究院 | Valve for external sealing by utilizing oppositely-arranged balanced filling cavities |
-
1995
- 1995-07-03 CN CN 95215781 patent/CN2231350Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100371638C (en) * | 2003-07-29 | 2008-02-27 | 余金权 | Corrugated pipe valve |
| CN114413058A (en) * | 2022-01-25 | 2022-04-29 | 济南新材料产业技术研究院 | Valve for external sealing by utilizing oppositely-arranged balanced filling cavities |
| CN114413058B (en) * | 2022-01-25 | 2024-02-02 | 济南新材料产业技术研究院 | Valve for external sealing by using opposite balance filling cavity |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 1996.07.17 |