CN2388426Y - Valve-stem packing leakless valve - Google Patents
Valve-stem packing leakless valve Download PDFInfo
- Publication number
- CN2388426Y CN2388426Y CN 99222063 CN99222063U CN2388426Y CN 2388426 Y CN2388426 Y CN 2388426Y CN 99222063 CN99222063 CN 99222063 CN 99222063 U CN99222063 U CN 99222063U CN 2388426 Y CN2388426 Y CN 2388426Y
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- blocking solution
- packing
- solution dish
- 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
Links
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- Details Of Valves (AREA)
Abstract
The utility model relates to a valve with non-leakage valve rod packing, which is used for opening or closing circulation medium in a pipe system. The utility model is characterized in that the valve rod of the valve is provided with a circular ring-shaped liquid stopping disc which can completely sealed a gap between a valve cap and the valve rod when the valve is fully opened, working medium of the pipe and packing filling are made to be separated, and the leakage at the valve rod packing is avoided. The utility model can be widely used in various pipe systems.
Description
The utility model relates to a kind of Shuttoff Valve that is used for turning on and off the pipe-line system circulation medium, especially for the pipeline Shuttoff Valve in the various mesolow pipe-line systems.
Shuttoff Valve is the vitals of pipe-line system, and the valve rod of Shuttoff Valve all adopts the packing filling sealing.When pipe-line system is moved, valve opening, the working pressure of circulation medium acts on packing filling in the system, and valve rod packing place often takes place the medium seepage.For eliminating the medium seepage at valve rod packing place, all be to adopt the method for tightening the packing gland bolt, but, usually depend merely on and tighten the packing gland bolt pipe-line system through moving after a while, still can not eliminate the medium seepage, at this moment just must change packing filling.The general replacement packing filling all must stop the pipeline operation, and is very inconvenient.If it is out of service that system does not allow, can only let alone seepage, cause environmental pollution.
The utility model is invented the non-leakage valve of a kind of valve rod packing exactly for overcoming the above problems.
The utility model is to realize like this, to by valve body, valve gap, valve disc, valve rod, packing filling, the non-leakage valve of valve rod packing that packing gland and pressure-conducting disk root bolt etc. are formed, be characterized on the valve rod of valve a ring blocking solution dish being arranged, the blocking solution dish is positioned at the top of valve disc, and when valve opening, ring blocking solution dish rises with valve rod, during valve wide open, the working surface of ring blocking solution dish and valve gap inwall sealing liquid surface fit tightly, space between valve gap and the valve rod is all sealed, the working medium of pipeline and packing filling are isolated, have the working medium of pressure can not apply pressure on the packing, eliminated medium seepage phenomenon.
The envelope part sealing liquid face that the working surface of ring blocking solution dish and valve gap inwall are in contact with it need pass through machining, and surface roughness is the poorest
Between the sealing liquid face that ring blocking solution dish working surface and valve gap inwall are in contact with it an elastic washer is arranged, be used to improve sealing.
This model utility has solved the long-standing of valve rod packing seepage working medium, and it is simple in structure, and convenient should going can be used for various pipe-line systems.
Accompanying drawing 1 is the schematic representation of this model utility, wherein:
1-valve body 2-valve disc 3-valve gap
4-valve gap Sealing Surface 5-packing 6-pressure-conducting disk root bolt
7-packing gland 8-valve rod 9-ring blocking solution dish
The 10-handwheel
Below in conjunction with accompanying drawing the utility model is described further.
Valve rod packing non leakage valve, valve rod (8) diameter 10mm.Ring blocking solution dish (9) on the valve rod is through 15mm, thickness 2.5mm, and ring blocking solution dish working surface is the plane, surface roughness
, part (4) surface roughness that valve gap (3) inwall Sealing Surface combines with annular blocking solution dish working surface
, when valve wide open, valve rod (8) promotes ring blocking solution dish (9), is adjacent to the part (4) that valve gap (3) inwall Sealing Surface contacts with ring blocking solution dish.The Circularhole diameter that passes valve rod on the valve gap (3) is 12mm.Ring blocking solution dish is all sealed the gap between valve rod (8) and the valve gap (3).
Claims (3)
1, the non-leakage valve of a kind of valve rod packing, form by valve body, valve gap, valve disc, valve rod, packing gland and pressure-conducting disk root bolt etc., it is characterized in that having on the said valve rod ring blocking solution dish, the blocking solution dish is positioned at the top of valve disc, and when valve wide open, ring blocking solution dish is risen to the working surface and the valve gap inwall sealing liquid surface that make ring blocking solution dish by valve rod and fits tightly.
2, press the said valve rod packing of claims non leakage valve, it is characterized in that the working surface of the ring blocking solution dish on the said valve rod is the poorest with the part surface roughness that annular blocking solution dish contacts with the valve gap inwall Sealing Surface that is in contact with it
3,, it is characterized in that between the working surface of the ring blocking solution dish on the said valve rod and the valve gap inwall sealing liquid face elastic washer being arranged by claim 1,2 said valve rod packing non leakage valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99222063 CN2388426Y (en) | 1999-08-23 | 1999-08-23 | Valve-stem packing leakless valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99222063 CN2388426Y (en) | 1999-08-23 | 1999-08-23 | Valve-stem packing leakless valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2388426Y true CN2388426Y (en) | 2000-07-19 |
Family
ID=34012526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99222063 Expired - Fee Related CN2388426Y (en) | 1999-08-23 | 1999-08-23 | Valve-stem packing leakless valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2388426Y (en) |
-
1999
- 1999-08-23 CN CN 99222063 patent/CN2388426Y/en not_active Expired - Fee Related
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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 |