CN2323197Y - Stop valve - Google Patents
Stop valve Download PDFInfo
- Publication number
- CN2323197Y CN2323197Y CN 98213371 CN98213371U CN2323197Y CN 2323197 Y CN2323197 Y CN 2323197Y CN 98213371 CN98213371 CN 98213371 CN 98213371 U CN98213371 U CN 98213371U CN 2323197 Y CN2323197 Y CN 2323197Y
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- flap
- rod
- stop
- 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)
Abstract
The utility model discloses a stop valve. The structural point of the utility model is that the inside of a valve body which is formed in a welding way is provided with a valve clack, the contact surface of the bottom of the valve clack and the valve body is provided with a sealing pad, the top part of the valve clack is connected with a valve rod by threads, the valve rod is provided with a material feeding chamber, the middle part of the material feeding chamber is provided with a packing pressing flange threaded on the valve rod, and the top part of the valve rod is provided with a hand wheel. By rotating the hand wheel, the valve can be rotated, valve clack which are connected with the valve rod by threads can move up and down, and the opening and the closure of the stop valve can be realized thereby. The utility model has the advantages that the welding is easy, the cracking phenomenon can not occur, the structure is simple, the cost is low, and the service is long.
Description
The utility model relates to a kind of stop valve.
Stop valve commonly used at present is in normal the use, the tight and phenomenon of leaking of water clock, valve stem seal is arranged after often occurring closing, especially in the pharmaceutical industry of chemical industry and microbe culture, can cause very big microbiological contamination accident, valve sternly is not the thing that pharmaceuticals industry antibiotics production person payes attention to most; Valve rod commonly used also is difficult to overcome opening, rotate, being very easy to when moving up and down leak; Because valve body is made by cast iron, cast steel, casting stainless steel mostly, these materials can cause and burst phenomenon through adding repeatedly, cooling, also has the shortcoming that is difficult for welding simultaneously, unexpectedly after the welding very major part all can burst, because in the chemical pharmaceutical industry, usually will set up one or more tube heads or minor valve again and use stamping the hole on the bigger valve as air inlet and exhaust.
The purpose of this utility model is to provide a kind of and does not leak, do not let out, sturdy and durable, high temperature resistant, acid resistant alkali, easily welding, the stop valve that cost is low.
The purpose of this utility model is achieved in that
In the valve body by welding fabrication flap is installed, sealing gasket is installed with the surface of contact place of valve body in said flap bottom, said flap screw top connects valve rod, on said valve rod, install one and add the material chamber, this installs a packing differential that is through on the valve rod in the middle of adding the material chamber, and a handwheel is installed at said valve rod top.By rotating handwheel, valve rod is rotated, the flap that connects with threaded stem then moves up and down, thereby has realized the opening and closing of valve.
One valve gap that is connected on the valve body is installed between said in the above valve rod and the flap.
Said in the above adding expects that outdoor scyewed joint one compresses the locknut that compresses of packing differential.
Above said sealing gasket be the teflon pad.
Above said valve rod boss two sides be boss cooperate with valve gap just and boss with add material cooperation place, chamber one copper washer respectively be installed.
Advantage of the present utility model is:
Since flap be scyewed joint on valve rod, so change the axial-movement of flap commonly used into straight line motion up and down, thereby solved the difficult problem that valve commonly used leaks easily; Because in the flap bottom and the cooperation place of valve body one sealing gasket is installed, so, the appearance of leaking further prevented; Material of the present utility model can be used welding such as carbon steel, stainless steel, also can forge, cast, so welding easily can not burst; The utility model is simple in structure, and cost is low, long service life.
Because the utility model has further been installed valve gap and has been compressed locknut, makes the sealing of this valve reliable; Because a copper packing is respectively installed at the fitting surface place on the boss two sides of valve rod, so the sealing of this valve is very tight; Because sealing gasket adopts the teflon material, it has the characteristics of acid resistant alkali, high-low temperature resistant; If occur cuts such as hole, ditch on the valve seat, only need to change a polytetrafluoroethylene sealing gasket, increased force will is tightly twisted and is unclamped, and so will extrude the projection consistent with the cut on the valve seat on the sealing gasket, just can continue to use, water clock can not occur so leak still.
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Fig. 1 is a scheme of installation of the present utility model.
As shown in the figure, in the valve body 6 that is welded by stainless steel pipe flaps 8 are installed, sealing gasket 9 is installed with the surface of contact place of valve body in said flap bottom, the sealing pad is a polytetrafluoroethylene sealing gasket, said flap screw top connects valve rod 7, one valve gap 5 that is connected on the valve body is installed between said valve rod and flap, on said valve rod, install one and add material chamber 4, this installs a packing differential 3 that is through on the valve rod in the middle of adding the material chamber, said add that outdoor scyewed joint one of material compress the packing differential compress locknut 2, one boss is arranged in the middle of the said valve rod, this boss and valve gap cooperation place and boss and add the material cooperation place, chamber one copper washer respectively is installed, a handwheel 1 is installed at said valve rod top.By rotating handwheel, valve rod is rotated, the flap that connects with threaded stem then moves up and down, thereby has realized the opening and closing of valve.The utility model changes the axial-movement of flap commonly used into straight line motion up and down, thereby has solved the difficult problem that valve commonly used leaks easily; Because in the flap bottom and the cooperation place of valve body one sealing gasket is installed, so, the appearance of leaking further prevented; This valve body adopts weldment, can not burst; Valve gap has been installed and has been compressed locknut, made the sealing of this valve reliable; Because a copper packing is respectively installed at the fitting surface place on the boss two sides of valve rod, so the sealing of this valve is very tight; Because sealing gasket adopts the teflon material, it has the characteristics of acid resistant alkali, high-low temperature resistant; If occur cuts such as hole, ditch on the valve seat, only need to change a polytetrafluoroethylene sealing gasket, increased force will is tightly twisted and is unclamped, and so will extrude the projection consistent with the cut on the valve seat on the sealing gasket, just can continue to use, water clock can not occur so leak still.
Claims (5)
1, a kind of stop valve, it is characterized in that: by flap (8) is installed in the valve body (6) of welding fabrication, sealing gasket (9) is installed with the surface of contact place of valve body in said flap bottom, said flap screw top connects valve rod (7), on said valve rod, install one and add material chamber (4), this installs a packing differential (3) that is through on the valve rod in the middle of adding the material chamber, and a handwheel (1) is installed at said valve rod top.
2, stop valve according to claim 1 is characterized in that: a valve gap (5) that is connected on the valve body is installed between said valve rod and flap.
3, stop valve according to claim 1 is characterized in that: said add that outdoor scyewed joint one of material compress the packing differential compress locknut (2).
4, stop valve according to claim 1 is characterized in that: said sealing gasket is the teflon pad.
5, according to claim 1,2,3 or 4 described stop valves, it is characterized in that: said valve rod boss two sides be boss cooperate with valve gap just and boss with add material cooperation place, chamber one copper washer respectively be installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98213371 CN2323197Y (en) | 1998-05-08 | 1998-05-08 | Stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98213371 CN2323197Y (en) | 1998-05-08 | 1998-05-08 | Stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2323197Y true CN2323197Y (en) | 1999-06-09 |
Family
ID=33967347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98213371 Expired - Fee Related CN2323197Y (en) | 1998-05-08 | 1998-05-08 | Stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2323197Y (en) |
-
1998
- 1998-05-08 CN CN 98213371 patent/CN2323197Y/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 |