CN2240080Y - Leak-proof stop valve - Google Patents
Leak-proof stop valve Download PDFInfo
- Publication number
- CN2240080Y CN2240080Y CN 95241929 CN95241929U CN2240080Y CN 2240080 Y CN2240080 Y CN 2240080Y CN 95241929 CN95241929 CN 95241929 CN 95241929 U CN95241929 U CN 95241929U CN 2240080 Y CN2240080 Y CN 2240080Y
- Authority
- CN
- China
- Prior art keywords
- valve
- sealing plug
- sealing
- stop valve
- valve body
- 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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- Lift Valve (AREA)
- Taps Or Cocks (AREA)
- Valve Housings (AREA)
Abstract
The utility model introduces a leak-proof stop valve, which keeps a valve body, a valve rod, a valve cap, a sealing flap and a hand wheel which belong to prior fluid stop valve, and a filler chamber and a filler gland are removed and replaced by a sealing plug and a sealing ring. The sealing ring is in circle table shape and is tightly locked on the neck of the sealing plug. The sealing plug is made from metallic material and is matched with the valve rod in a slide mode. The sealing ring is made from metal or non-metal elastic material and is tightly matched with the inner wall of the control chamber of the stop valve.
Description
The utility model relates to a kind of leakproof stop valve for standard-sized sheet, all kinds of pipelines of complete shut-down or the operation of Equipment Control fluid.
The fluid stop valve that generally uses is to be made of valve body, valve rod, bonnet, handwheel, filler chamber, follower, seal ring and sealing lobe at present, fills sealing substance in the filler chamber.Sealing substance will bear the effect of level and vertical two aspects repeatedly owing to be in operation, and therefore is easy to attrition, and fluid then can leak out from bonnet and valve rod jointing place, makes troubles to use.
The purpose of this utility model is to overcome the deficiency that existing fluid stop valve exists, and designs a kind of simple in structure, with low cost, easy to use, stop valve flexibly, requires it in use can effectively prevent the leakage of fluid.
In order to realize the purpose of foregoing invention.This reality is novel has taked following technical measures, promptly keep valve body, valve rod, bonnet, handwheel, sealing lobe and the screw driven structure of existing fluid stop valve constant, remove filler chamber and follower, increase by a sealing plug in stem lower portion, the sealing plug cooperates with valve stem slides, sealing lobe lock ring neck under sealing plug, neck lock ring one garden platform shape elastic seal ring on the sealing plug, sealing circle outer, bottom and stop valve control chamber inwall drive fit, gapped between sealing plug and the valve body.
Its working principle is: when fluid revolves on valve rod, flow in the process of outlet through valve body by import, hydrodynamic pressure crush seal plug, because drive fit between garden platform shape seal ring and the valve body control chamber inwall, block the path that fluid upwards overflows, thereby prevented the leakage of fluid when valve body is opened effectively.
Provide embodiment below in conjunction with accompanying drawing:
Fig. 1 is the assembly structure figure of this leakproof stop valve.
As seen from the figure, this leakproof stop valve is by valve body (1), valve rod (2), bonnet (3), sealing lobe (4), handwheel (5), sealing plug (6) and seal ring (7) constitute, valve body top is control chamber (8), import (9) and outlet (10) are arranged at the bottom, be between valve rod (2) and bonnet (3) and bonnet (3) and the valve body (1) and be threaded, handwheel (5) is fastened on valve rod (1) upper end, stem lower portion and sealing plug (6) are slidingly matched, sealing lobe (4) lock ring neck under sealing plug (6), garden platform shape seal ring (7) lock ring neck on sealing plug, sealing circle outer, bottom and control chamber (8) inwall drive fit have less gap between sealing plug and the valve body.
For wear-resisting, high temperature resistant, sealing plug adopts metallic material to make, and is corrosion protection, can carry out anti-corrosion treatment on its surface, and the seal ring of lock ring neck on sealing plug should take rubber-like metal or nonmetallic material to make, and adopts rubber in the present embodiment.
If this leakproof stop valve is applied to airflow line control, can on sealing plug, sets up 1～2 identical seal ring by neck, and require the machining accuracy of the control section of corresponding increase valve.
Claims (4)
1, a kind of leakproof stop valve, comprise valve body, valve rod, bonnet, sealing lobe and handwheel, valve body top is control chamber, import and outlet are arranged at the bottom, be between valve rod and bonnet and bonnet and the valve body and be threaded, handwheel is fastened on the valve rod upper end, it is characterized in that stem lower portion has a sealing plug, the sealing plug cooperates with valve stem slides, sealing lobe lock ring neck under sealing plug, neck lock ring one garden platform shape elastic seal ring on the sealing plug, sealing circle outer, bottom and control chamber inwall drive fit, gapped between sealing plug and the valve body.
2, according to the described leakproof stop valve of claim 1, it is characterized in that sealing plug is that metallic material is made, seal ring is made of metal or non-metallic elastic material.
3,, it is characterized in that seal ring is that rubber is made according to the described leakproof stop valve of claim 2.
4, according to the described leakproof stop valve of claim 1, it is characterized in that the neck lock ring has plural seal ring on the sealing plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95241929 CN2240080Y (en) | 1995-07-26 | 1995-07-26 | Leak-proof stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95241929 CN2240080Y (en) | 1995-07-26 | 1995-07-26 | Leak-proof stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2240080Y true CN2240080Y (en) | 1996-11-13 |
Family
ID=33882985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95241929 Expired - Fee Related CN2240080Y (en) | 1995-07-26 | 1995-07-26 | Leak-proof stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2240080Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384276A (en) * | 2011-07-08 | 2012-03-21 | 梁敬喜 | Structure of sealing surface of valve clack |
-
1995
- 1995-07-26 CN CN 95241929 patent/CN2240080Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384276A (en) * | 2011-07-08 | 2012-03-21 | 梁敬喜 | Structure of sealing surface of valve clack |
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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 |