CN2869502Y - Special non-return valve for chlorine - Google Patents
Special non-return valve for chlorine Download PDFInfo
- Publication number
- CN2869502Y CN2869502Y CN 200520104792 CN200520104792U CN2869502Y CN 2869502 Y CN2869502 Y CN 2869502Y CN 200520104792 CN200520104792 CN 200520104792 CN 200520104792 U CN200520104792 U CN 200520104792U CN 2869502 Y CN2869502 Y CN 2869502Y
- Authority
- CN
- China
- Prior art keywords
- valve body
- valve
- chlorine
- seal ring
- processed
- 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
A special purpose check valve for chlorine gas and belongs to media transfer piping special valve of chemical field and comprises valve body and valve clack matching for the valve body, the feature is to fix the teflon sealing ring on contacted surface of valve clack lower end surface and valve body, on the position of valve body corresponding to teflon sealing ring, the raised corrosion resistant alloy pressure disk is arranged. After the above-mentioned improvement and because the valve clack and valve body are added with sealing device and positioning guiding device, the utility model is with best sealing property, strong corrosion resistance and simple structure and easy to operation.
Description
Technical field
The utility model belongs to chemical industry medium transport pipeline special valve field, specifically is a kind of chlorine check valve special.
Background technique
Chemical enterprise make as media such as chlorine, has highly corrosive, and need to compress into the row conveying by the continuous band of pipeline, for the ease of the maintenance of equipment or to the control of rate-of flow, the technician just installs many group safety check as required on delivery line, the backflow of chlorine after breaking down with instant control pipeline maintenance or equipment.Therefore relevant technician has also designed the chlorine check valve special of plurality of specifications, but among the application of enterprise practical, finds that the valve special for chlorine of prior art exists sealability relatively poor, the deficiency that corrosion resistance is weak.
The model utility content
The purpose of this utility model is to overcome above-mentioned deficiency of the prior art, and a kind of good seal performance is provided, and corrosion resistance is strong, and simple in structure, the chlorine check valve special that is easy to process.
For achieving the above object, the utility model is achieved through the following technical solutions:
It is a kind of chlorine check valve special, comprise valve body, and with the flap of valve body coupling, it is characterized in that the position that contacts with valve body, flap lower end surface is provided with teflon seal ring, the position of corresponding teflon seal ring on the valve body is provided with protruding corrosion resisting alloy seal joint.
For teflon seal ring and flap are fixedly connected, can be processed with section in the flap lower end surface is swallow-tailed packing groove, teflon seal ring is arranged in the packing groove, teflon seal ring adopts inside and outside isobaric, and the mode of sintering sealing, back seal is worked in the packing groove, so that both firm being combined as a whole, the problem that comes off, become flexible, be out of shape in use can not appear, safety does not have leakage, simultaneously, does not destroy the teflon seal ring self characteristics again.
In addition, for further strengthening the sealability between valve body and its connecting flange, two ends of valve body all connects firmly long mouthful flange, valve body and the long mouthful of flange position that links is processed with positioning groove, the relevant position of long mouthful flange is processed with the positioning boss that matches, and installs polytetrafluoroethylene sealing gasket additional between valve body and long mouthful flange.
Close valve pocket fast and accurately for the ease of flap, can have the positioning boss of chamfering in the processing of flap lower end surface, positioning boss is positioned at the inboard of teflon seal ring, and the position of corresponding positioning boss is processed with the locating groove that matches on the valve body.
The utility model owing to all installed seal arrangement and locating guide device additional on flap and valve body, and also is provided with positioning device in two ends of valve body after above-mentioned improvement, so have good seal performance, corrosion resistance is strong, and simple in structure, the advantage that is easy to process.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described in further detail:
Fig. 1: the utility model example structure schematic representation.
The A position structure for amplifying schematic representation of Fig. 2: Fig. 1.
Among the figure: long mouthful flange on 1; 2 positioning grooves; 3 guide rods; 4 valve bodies; 5 flaps; 6 polytetrafluoroethylene sealing gaskets, 7 times long mouthful of flanges; 8 teflon seal rings; 9 alloy seal joints, 10 chamferings.
Embodiment
As shown in Figure 1 and Figure 2, this chlorine check valve special, comprise valve body 4, and with the flap 5 of valve body 4 coupling, improvement of the present utility model is that the position that contacts with valve body 1, flap 5 lower end surfaces is provided with teflon seal ring 8, the position of corresponding teflon seal ring 8 on the valve body 4 is provided with protruding corrosion resisting alloy seal joint 9.
Usage mode of the present utility model is same as the prior art.Promptly normally carry at chlorine, pipeline exists under the pressure condition, flap 5 is by jack-up, and chlorine is normally carried, when flap 5 under chlorine conveyance conduit pressure release situation, because the effect of deadweight, move under the guiding of guide rod 3, poly-tetrafluoro one lower sealing ring 8 pressing corrosion resisting alloy seal joints 9 are closed valve pocket, action has promptly realized the control to the valve pocket switching and so forth.
For teflon seal ring 8 and flap 5 are fixedly connected, can be processed with section in flap 5 lower end surfaces is swallow-tailed packing groove, teflon seal ring 8 is arranged in the packing groove, teflon seal ring 8 adopts inside and outside isobaric, and the mode of sintering sealing, back seal is worked in the packing groove, so that both firm being combined as a whole, the problem that comes off, become flexible, be out of shape in use can not appear, safety does not have leakage, simultaneously, does not destroy the teflon seal ring self characteristics again.
In addition, for further strengthening the sealability between valve body 4 and its connecting flange, two ends of valve body all connects firmly long mouthful flange 1, following long mouthful of flange 7, and valve body 4 and a upper and lower long mouthful flange 1,6 position that links is processed with positioning groove 2, and the relevant position of upper and lower long mouthful flange 1,6 is processed with the positioning boss that matches and installs polytetrafluoroethylene sealing gasket additional between valve body and long mouth flange.
Close valve pocket fast and accurately for the ease of flap, can have the positioning boss of chamfering 10 in the processing of flap lower end surface, positioning boss is positioned at the inboard of teflon seal ring, and the position of corresponding positioning boss is processed with the locating groove that matches on the valve body.
The utility model after above-mentioned improvement since on flap 5 and valve body 4, all installed additional sealing device with Reach locating guide device, and also be provided with positioner at the two ends of valve body, thus good seal performance had, Corrosion resistance is strong, and simple in structure, the advantage that is easy to process.
Claims (4)
1, a kind of chlorine check valve special, comprise valve body, and with the flap of valve body coupling, it is characterized in that the position that contacts with valve body, flap lower end surface is provided with teflon seal ring, the position of corresponding teflon seal ring on the valve body is provided with protruding corrosion resisting alloy seal joint.
2, chlorine check valve special according to claim 1 is characterized in that it is swallow-tailed packing groove that the flap lower end surface is processed with section, and teflon seal ring is arranged in the packing groove.
3, chlorine check valve special according to claim 1, it is characterized in that two ends of valve body all connects firmly long mouthful flange, valve body and the long mouthful of flange position that links is processed with positioning groove, the relevant position of long mouthful flange is processed with the positioning boss that matches, and installs polytetrafluoroethylene sealing gasket additional between valve body and long mouthful flange.
4, chlorine check valve special according to claim 1, it is characterized in that the processing of flap lower end surface has the positioning boss of chamfering, positioning boss is positioned at the inboard of teflon seal ring, and the position of corresponding positioning boss is processed with the locating groove that matches on the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520104792 CN2869502Y (en) | 2005-12-01 | 2005-12-01 | Special non-return valve for chlorine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520104792 CN2869502Y (en) | 2005-12-01 | 2005-12-01 | Special non-return valve for chlorine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2869502Y true CN2869502Y (en) | 2007-02-14 |
Family
ID=37724439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520104792 Expired - Fee Related CN2869502Y (en) | 2005-12-01 | 2005-12-01 | Special non-return valve for chlorine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2869502Y (en) |
-
2005
- 2005-12-01 CN CN 200520104792 patent/CN2869502Y/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 |