CN2178815Y - Cut-off valve - Google Patents
Cut-off valve Download PDFInfo
- Publication number
- CN2178815Y CN2178815Y CN 93243397 CN93243397U CN2178815Y CN 2178815 Y CN2178815 Y CN 2178815Y CN 93243397 CN93243397 CN 93243397 CN 93243397 U CN93243397 U CN 93243397U CN 2178815 Y CN2178815 Y CN 2178815Y
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- China
- Prior art keywords
- valve
- gap
- valve rod
- groove
- valve gap
- 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 provides a stop valve. A flange is arranged on the valve rod of the prior stop valve which is mainly composed of a valve body, a valve cap and a valve rod; a groove matched with the tapered flange is arranged on the valve cap corresponding to the flange. When the stop valve stays in full open state, the flange is laid in the groove, the inner surface of the groove and the tapered surface of the flange are tightly jointed, thereby, preventing the medium in the valve body from leaking from the gap between the valve rod and the valve cap; therefore, the conveying medium is saved, and the environmental pollution is reduced.
Description
The utility model relates to a kind of stop valve, relate in particular to a kind of under its full-gear, leak free stop valve between valve gap and valve rod.
Present known stop valve all be by in the gap between valve gap 1 and valve rod 2 beyond the Great Wall filler 3 stop that fed sheet of a media leaks out under opening state from described gap, as shown in Figure 1, but always also there is leakage in this sealing configuration, the conveying gas medium is particularly outstanding, and this leakage aggravates with the increase of opening degree, prolongation with service time aggravates, and this leakage is when the valve complete opening, and is the most serious.So both waste fed sheet of a media, also polluted surrounding environment.
The purpose of this utility model is to improve the deficiencies in the prior art, and a kind of stop valve that does not leak fully under the full open state is provided.
The purpose of this utility model is to improve the deficiencies in the prior art, and a kind of stop valve that does not leak fully under the full open state is provided.
The purpose of this utility model is achieved in that mainly by valve body, in the stop valve that valve gap and valve rod are formed, be arranged at valve rod on the end circumference of body cavity and be shaped on a tapered flanges, valve gap towards on the end face of body cavity one side with valve rod on the lugs position corresponding section be shaped on vertically one with valve rod on the groove that is complementary of flange size shape, when rotary valve rod is opened stop valve to maximum open degree, in the groove on the valve gap that just crouches of the flange on the valve rod, the internal surface of groove and the conical surface of flange fit tightly, and go out from the clearance leakage between valve rod and the valve gap to stop the medium in the valve body.
The purpose of this utility model also can realize like this: by valve body, in the stop valve that valve gap and valve rod are formed, its valve gap is made up of valve gap shell and copper nut, the valve gap shell is being shaped on a groove vertically on the end face of body cavity one side, on the internal surface of groove screw thread is arranged, copper nut and valve gap shell are spirally connected, the inner bolt hole of valve rod and copper nut constitutes screw pair, be arranged at valve rod on the end circumference of body cavity and be shaped on a tapered flanges, copper nut towards on the end face of body cavity one side with valve rod on the lugs position corresponding section be shaped on vertically one with valve rod on the groove that is complementary of flange size shape.When rotary valve rod was opened stop valve to maximum open degree, the flange on the valve rod just crouched in the groove on the valve gap, and the internal surface of groove and the conical surface of flange fit tightly, and are gone out by the clearance leakage between valve rod and the valve gap with the medium in the prevention valve body.
The purpose of this utility model can also realize like this: by valve body, in the stop valve that valve gap and valve rod are formed, establish a locking nut between valve body and the valve gap, valve gap while and locking nut and valve body bolt, one gap is arranged between the end face of valve gap and locking nut, the rotation valve gap, the end face in valve body of valve gap can be gone up, move down, valve gap moves down, the end face that makes valve gap reduces to the distance of valve seat, thereby the flow of the full-gear of valve is reduced, like this with regard to the flow fixed-size problem of the full-gear that solved the fixing stop valve of valve gap, be arranged at the valve rod of this stop valve on the end circumference of body cavity and be shaped on a tapered flanges, at the lower end of the valve gap perforate copper nut that is spirally connected, an end face system one conical socket at copper nut towards body cavity, in the groove when rotary valve rod unlatching stop valve crouches valve gap to the tapered flanges on the described valve rod on, the internal surface of groove and the conical surface of flange fit tightly, and are gone out by the clearance leakage between valve rod and the valve gap to stop the medium in the valve body.Utilize the stop valve of this structure, valve all can be become under required any flow and be full-gear, and tapered flanges on the valve rod is crouched in the groove of valve gap on the valve body interior edge face and realize not having and leak, note also that locking nut can not often regulate, and be applicable under the application of long-time fixing a certain flow, leak otherwise between valve gap and valve body, can produce.
The utility model is on common one gland sealed basis of stop valve, fit tightly and provide sealing by the tapered flanges on the valve rod with the groove on valve gap or the copper nut, thereby stop valve can not leaked fully under full-gear, this stop valve structure is simple simultaneously, is easy to manufacturing and uses installation.
Said structure also is suitable for gate valve and water tap, belongs to the scope that the utility model is protected.
The utility model is described in further detail below by drawings and Examples.
Fig. 1: existing stop valve structure master sectional view;
Fig. 2: the utility model stop valve structure master sectional view;
Fig. 3: the main sectional view of the another kind of structure stop valve of the utility model.
Fig. 4: the main sectional view of the third structure stop valve of the utility model.
Embodiment 1:
As shown in Figure 2, be shaped on a circular cone shape flange 2-1 on the circumference of valve rod 2 in existing stop valve by the end in the inner chamber 6 of valve body 5, with valve rod 2 on the corresponding valve gap 1 of lugs position towards be shaped on the side end face of the inner chamber 6 of valve body 5 one with valve rod on the groove 1-1 that is complementary of flange size shape.When rotary valve rod 2 is opened stop valve to maximum open degree, flange 2-1 on the valve rod 2 just crouches in the groove 1-1 on the valve gap 1, the conical surface work in-process of the internal surface of groove 1-1 and flange 2-1 is wanted polishing, two surface energies are fitted tightly, go out from the clearance leakage between valve rod 2 and the valve gap 1 with the medium in the inner chamber 6 that stops valve body.Add asbestos packing 7 sealings between valve body 5 and the valve gap 1.
Embodiment 2:
As shown in Figure 3, on the end face of a side of the inner chamber 6 of valve body 5, opening a groove 1-2 and form the valve gap shell at valve gap 1, make screw thread on the inwall of groove 1-2, a copper nut 4 is spirally connected with the valve gap shell, valve rod 2 constitutes screw pair with the inner bolt hole of copper nut 4, be arranged at valve rod 2 on the end circumference of inner chamber 6 of valve body 5 and be shaped on a circular cone shape flange 2-1, copper nut 4 towards be shaped on the side end face of the inner chamber 6 of valve body 5 one with valve rod 2 on the groove 4-1 that is complementary of flange 2-1 size shape, when rotary valve rod 2 is opened stop valve to maximum open degree, flange 2-1 on the valve rod 2 just crouches among the groove 4-1 on the copper nut 4, the conical surface work in-process of the internal surface of groove 4-1 and flange 2-1 is wanted polishing, two surface energies are fitted tightly, go out by the clearance leakage between valve rod 2 and the valve gap 1 with the medium in the inner chamber 6 that stops valve body.
Embodiment 3:
As shown in Figure 4, establish a locking nut 8 between valve body 5 and valve gap 1, locking nut 8 and valve body 5 are spirally connected with valve gap 1 simultaneously, between the end face of valve gap 1 and locking nut 8 gap are arranged, and other structure is identical with embodiment 2.
Claims (6)
1, a kind of stop valve, it mainly is made up of valve body, valve gap and valve rod, it is characterized in that: be arranged at valve rod on the end circumference of body cavity and be shaped on a tapered flanges, valve gap towards on the end face of body cavity one side with valve rod on the lugs position corresponding section be shaped on vertically one with valve rod on the groove that is complementary of flange size shape.
2, stop valve as claimed in claim 1 is characterized in that: described flange shape is a truncated cone.
3, a kind of stop valve, by valve body, valve gap and valve rod are formed, its valve gap is made up of valve gap shell and copper nut, the valve gap shell is being shaped on a groove vertically on the end face of body cavity one side, on the internal surface of groove screw thread is arranged, copper nut and valve gap shell are spirally connected, the inner bolt hole of valve rod and copper nut constitutes screw pair, it is characterized in that: be arranged at valve rod on the end circumference of body cavity and be shaped on a tapered flanges, copper nut towards on the end face of body cavity one side with valve rod on the lugs position corresponding section be shaped on vertically one with valve rod on the groove that is complementary of flange size shape.
4, stop valve as claimed in claim 3 is characterized in that: described flange shape is a truncated cone.
5, a kind of stop valve, by valve body, valve gap and valve rod are formed, its valve gap is made up of valve gap shell and copper nut, the valve gap shell is being shaped on a groove vertically on the end face of body cavity one side, on the internal surface of groove screw thread is arranged, copper nut and valve gap shell are spirally connected, the inner bolt hole of valve rod and copper nut constitutes screw pair, it is characterized in that: between valve body and valve gap, establish a locking nut, valve gap while and locking nut and valve body bolt, one gap is arranged between the end face of valve gap and locking nut, be arranged at valve rod on the end circumference of body cavity and be shaped on a tapered flanges, copper nut towards on the end face of body cavity one side with valve rod on the lugs position corresponding section be shaped on vertically one with valve rod on the groove that is complementary of flange size shape.
6, stop valve as claimed in claim 5 is characterized in that: described flange shape is a truncated cone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93243397 CN2178815Y (en) | 1993-11-03 | 1993-11-03 | Cut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93243397 CN2178815Y (en) | 1993-11-03 | 1993-11-03 | Cut-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2178815Y true CN2178815Y (en) | 1994-10-05 |
Family
ID=33816865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93243397 Expired - Fee Related CN2178815Y (en) | 1993-11-03 | 1993-11-03 | Cut-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2178815Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321919A (en) * | 2016-11-15 | 2017-01-11 | 赵忠海 | Normal-pressure self-closing valve |
-
1993
- 1993-11-03 CN CN 93243397 patent/CN2178815Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321919A (en) * | 2016-11-15 | 2017-01-11 | 赵忠海 | Normal-pressure self-closing valve |
| CN106321919B (en) * | 2016-11-15 | 2018-06-08 | 赵忠海 | normal pressure self-closing valve |
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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 |