CN202992193U - Special full lining chlor-alkali valve - Google Patents
Special full lining chlor-alkali valve Download PDFInfo
- Publication number
- CN202992193U CN202992193U CN 201220743849 CN201220743849U CN202992193U CN 202992193 U CN202992193 U CN 202992193U CN 201220743849 CN201220743849 CN 201220743849 CN 201220743849 U CN201220743849 U CN 201220743849U CN 202992193 U CN202992193 U CN 202992193U
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- Prior art keywords
- valve
- chlor
- valve seat
- groove
- alkali
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- Expired - Fee Related
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- Lift Valve (AREA)
Abstract
The utility model discloses a special full lining chlor-alkali valve aimed at defects of complicated structures, large machining difficulties and high production cost in the prior art. The Special full lining chlor-alkali valve comprises a valve body, a valve seat, a valve clack, a valve cap and hand wheels. The valve cap is in groove type sealing connection with the valve body, the valve clack is provided with two sealing faces composed of taper faces and planes. A taper body is machined at the end of the valve clack, a groove is machined on the valve seat, a hard alloy layer is arranged at a position where the surface of the valve clack is matched with the valve seat, a lining layer is internally arranged in a cavity of the valve body, and polytetrafluoroethylene resins are filled in the groove of the valve seat. The special full lining chlor-alkali valve has the advantages that a taper body ranging from 8 degrees to 12 degrees is machined at the end of the valve clack, so that media flow along the surface of the taper body when the valve is opened, the problem of valve seat scouring by media at the ends of the planes is solved, the service life of the valve is increased by more than 10 times, and the utilization reliability of the valve is improved.
Description
Technical field
The utility model relates to a kind of valve for chemical industry, particularly a kind of special valve for strong corrosive medium conveyance conduits such as chlor-alkalis.
Background technique
At present, the valve that China's chemical enterprise is used for the deep-etching flowing mediums controls such as chlorine, liquid chlorine mostly is greatly common Chlorine stop valve, due in design unreasonable of the form of being tightly connected and structure, in using process, the Sealing damage that easily comes off, easily leak, and security incident even occurs, valve is short working life, safeguard and change frequently, impact is produced, economic loss.Common valve does not possess special-purpose characteristics from material or structure, under deep-etching, poisonous and hazardous process conditions, and poor sealing performance often, easily leak, housing is easily bored a hole, and working life is short, can not satisfy the specific (special) requirements of permanently effective conveying poisonous medium.In a single day chlorine leak out, and can bring serious consequence to surrounding enviroment and personal safety.In recent years, the specific (special) requirements of carrying according to poisonous, easy leaking medium for some defectives that existing valve uses, has been announced much the technological scheme about the valve special for chlorine that prevents chlorine leakage now in technology.
Such as, Chinese patent CN201010166872.7 discloses a kind of maintenance-free corrugated tube valve special for chlorine, relate to a kind of valve body, comprise valve body, valve seat, flap, cylindrical valve gap, bellows, valve rod, Gland, handwheel, the cylindrical body block is set, the upper end welding of the upper end of cylindrical body block and bellows and valve gap, the fixing outwardly overlap in the lower end of cylindrical body block between described bellows and valve gap, overlap is arranged between valve gap and valve body, between overlap and valve body, pad is set; The upper surface of valve seat arranges annular groove, and Sealing is set in annular groove; The flap surface arranges hard alloy layer, and hard alloy layer matches with the Sealing of valve base surface.This technological scheme is by above design, and the bellows upper end is equipped with the cylindrical body block, can effectively be controlled at fluid in the valve body cavity, reduces leakage point, removes maintenance from.Its advantage is good seal performance, difficult drop-off, and difficult the leakage, long service life, safe and reliable.But from practice, it is comparatively complicated that this product still exists structure, and difficulty of processing is large, the deficiency that cost of production is high.
The model utility content
To be solved in the utility model is that the product structure that exists in prior art is comparatively complicated, and difficulty of processing is large, and the deficiency that cost of production is high provides a kind of novel full lining chlor-alkali special valve.
For achieving the above object, the utility model is achieved through the following technical solutions: a kind of full lining chlor-alkali special valve, comprise valve body, valve seat, flap, valve gap, valve rod, handwheel, described valve gap and valve body tenon-slot type are tightly connected, described flap is provided with the double-sealing face that is made of the conical surface, plane, the flap end is processed with cone, be processed with groove on described valve seat, the position that described flap surface coordinates with valve seat arranges hard alloy layer, body cavity is built-in with one deck liner titanium layer, filled polytetrafluoroethylene resin in described valve seat groove.
As improvement of the present utility model, in described double-sealing face, conical surface angle is the 65-75 degree, and described cone is the 8-12 degree.
As further improvement of the utility model, described groove is that the bottom land width is greater than the dovetail groove of width of rebate.
Adopt technique scheme, make to the utlity model has following advantage: use more reliable.The flap end is processed with the cones of 8～12 degree, and medium along cone surface shunting, has solved the difficult problem that the flat end medium washes away valve seat when valve open, improves valve working life more than ten times.Valve body material adopts the corrosion resistant alloy steel to make according to the specific (special) requirements of chemical industry for making chlorine and alkali industrial and mineral, solve often the bore a hole difficult problem of chlorine leakage of common valve housing, the position that coordinates with valve seat on flap surface arranges hard alloy layer, can further improve the corrosion resistance of valve, guarantee safe and reliable without leaking.Be processed with the double-sealing face that is consisted of by the conical surface, plane on flap simultaneously, when using, new valve is 65-75 degree conical surface seal, use a period of time displacement to consist of the cone plane sealing, reach the effect of double seal dual fail-safe non-internal leakage, in the solution prior art, valve seal is not tight, easily an interior difficult problem of leaking.Be processed with swallow tail shaped slot on valve seat, be pressed into polyflon in groove and after sintering mold pressing consist of wholely, the organic set of resin and metallic matrix is integrated, reach good seal performance, indeformable, the corrosion resistant effect that do not come off, thus further improved the reliability that valve uses.
Description of drawings
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Fig. 1: the utility model structural representation.
Wherein: handwheel 1, valve body 2, flap 3, double-sealing face 4, groove 5, Gland nut 6, valve seat 7, flange nut 8, valve rod 9, valve gap 10.
Embodiment
As shown in Figure 1, a kind of full lining chlor-alkali special valve, comprise valve body, valve seat, flap, valve gap, valve rod, handwheel, described valve gap and valve body tenon-slot type are tightly connected, and described flap is provided with the double-sealing face that is made of the conical surface, plane, and the flap end is processed with cone, be processed with groove on described valve seat, the position that described flap surface coordinates with valve seat arranges hard alloy layer, and body cavity is built-in with one deck liner titanium layer, filled polytetrafluoroethylene resin in described valve seat groove.Wherein, in described double-sealing face, conical surface angle is the 65-75 degree, and described cone is the 8-12 degree; Described groove is that the bottom land width is greater than the dovetail groove of width of rebate.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, can also make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.
Claims (3)
1. one kind serves as a contrast the chlor-alkali special valve entirely, comprise valve body, valve seat, flap, valve gap, valve rod, handwheel, described valve gap and valve body tenon-slot type are tightly connected, described flap is provided with the double-sealing face that is made of the conical surface, plane, the flap end is processed with cone, is processed with groove on described valve seat, it is characterized in that the position that described flap surface coordinates with valve seat arranges hard alloy layer, body cavity is built-in with one deck liner titanium layer, filled polytetrafluoroethylene resin in described valve seat groove.
2. full lining chlor-alkali special valve according to claim 1, is characterized in that in described double-sealing face, conical surface angle is the 65-75 degree, and described cone is the 8-12 degree.
3. full lining chlor-alkali special valve according to claim 1, is characterized in that described groove is that the bottom land width is greater than the dovetail groove of width of rebate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220743849 CN202992193U (en) | 2012-12-29 | 2012-12-29 | Special full lining chlor-alkali valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220743849 CN202992193U (en) | 2012-12-29 | 2012-12-29 | Special full lining chlor-alkali valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202992193U true CN202992193U (en) | 2013-06-12 |
Family
ID=48563374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220743849 Expired - Fee Related CN202992193U (en) | 2012-12-29 | 2012-12-29 | Special full lining chlor-alkali valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202992193U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167451A (en) * | 2018-02-08 | 2018-06-15 | 江苏金晟元特种阀门股份有限公司 | Corrugated pipe chlorine Special cut-off valve |
| CN110220000A (en) * | 2019-05-21 | 2019-09-10 | 上海航天设备制造总厂有限公司 | A kind of valve hard sealing structure of the spare encapsulation scheme of band |
-
2012
- 2012-12-29 CN CN 201220743849 patent/CN202992193U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167451A (en) * | 2018-02-08 | 2018-06-15 | 江苏金晟元特种阀门股份有限公司 | Corrugated pipe chlorine Special cut-off valve |
| CN110220000A (en) * | 2019-05-21 | 2019-09-10 | 上海航天设备制造总厂有限公司 | A kind of valve hard sealing structure of the spare encapsulation scheme of band |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20131229 |