CN103899761A - Full-lined valve special for chlorine-alkali - Google Patents
Full-lined valve special for chlorine-alkali Download PDFInfo
- Publication number
- CN103899761A CN103899761A CN201210588170.7A CN201210588170A CN103899761A CN 103899761 A CN103899761 A CN 103899761A CN 201210588170 A CN201210588170 A CN 201210588170A CN 103899761 A CN103899761 A CN 103899761A
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- CN
- China
- Prior art keywords
- valve
- full
- valve seat
- cone
- flap
- 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.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Sliding Valves (AREA)
Abstract
The invention discloses a full-lined valve special for chlorine-alkali. The full-lined valve aims to solve the problems that product structures are complex, machining is very difficult and production cost is high in the prior art. The full-lined valve comprises a valve body, a valve seat, a valve clack, a valve cover, a valve rod and a hand wheel. The valve cover and the valve body are connected together in a mortising type sealing mode. The valve clack is provided with a dual-sealing face, wherein the dual-sealing face is composed of a tapered face and a plane. A cone is machined at the end of the valve clack. A groove is formed in the valve seat and filled with tetrafluoro-ethylene resin. A hard alloy layer is arranged on the position where the surface of the valve clack is matched with the valve seat. A lining titanium layer is arranged in the inner cavity of the valve body. The full-lined valve has the advantages that because the 8-12-degree cone is machined at the end of the valve clack, when the valve is opened, media are distributed along the surface of the cone, the defect that the valve seat is washed by the media at the end of the plane is overcome, the service life of the valve is prolonged by more than ten times, and using reliability of the valve is improved.
Description
Technical field
The present invention 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, China's chemical enterprise is mostly common Chlorine stop valve for the valve of the deep-etching flowing medium controls such as chlorine, liquid chlorine, due in design unreasonable of the form of being tightly connected and structure, in using process, the Sealing damage that easily comes off, easily leaks, and security incident even occurs, valve is short working life, safeguard and change frequently, impact is produced, and causes economic loss.Common valve is from material or structure does not possess special feature, under deep-etching, poisonous and hazardous process conditions, and often poor sealing performance, easily leak, housing is easily bored a hole, and working life is short, can not meet the particular/special requirement of permanently effective conveying poisonous medium.Once chlorine leaks out, can bring serious consequence to surrounding enviroment and personal safety.In recent years, the particular/special requirement of carrying according to poisonous, easy leaking medium, the some defects that use for existing valve, have announced in technology much now about the technological scheme of valve special for chlorine that prevents chlorine leakage.
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, 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 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; 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 bellows upper end is equipped with cylindrical body block, can effectively fluid be controlled in valve body cavity, reduces leakage point, removes maintenance from.Its advantage is good seal performance, difficult drop-off, and difficult leakage, long service life, safe and reliable.But from practice, it is comparatively complicated that this product still exists structure, difficulty of processing is large, the deficiency that cost of production is high.
Summary of the invention
What the present invention will solve is that the product structure existing 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 present invention is achieved by 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 being made up of the conical surface, plane, flap end is processed with cone, on described valve seat, be processed with groove, 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 invention, in described double-sealing face, conical surface angle is 65-75 degree, and described cone is 8-12 degree.
As a further improvement on the present invention, described groove is the dovetail groove that bottom land width is greater than width of rebate.
Adopt technique scheme, tool of the present invention is had the following advantages: use more reliable.Flap end is processed with the cones of 8～12 degree, and in the time of valve open, medium, along cone surface shunting, has solved the difficult problem that flat end medium washes away valve seat, improves valve working life more than ten times.Valve body material adopts corrosion resistant alloy steel to make according to chemical industry for making chlorine and alkali industrial and mineral particular/special requirement, solve often the bore a hole difficult problem of chlorine leakage of common valve housing, the position coordinating with valve seat on flap surface arranges hard alloy layer, can further improve the corrosion resistance of valve, ensure safe and reliable without leaking.On flap, be processed with the double-sealing face being formed by the conical surface, plane simultaneously, it in the time that new valve uses, is 65-75 degree conical surface seal, use a period of time displacement to form cone plane sealing, reach the effect of double seal dual fail-safe non-internal leakage, in solution prior art, valve seal is not tight, easily an interior difficult problem of leaking.On valve seat, be processed with swallow tail shaped slot, in groove, be pressed into polyflon and after sintering mold pressing form entirety, 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 improve the reliability that valve uses.
Brief description of the drawings
Below in conjunction with accompanying drawing, the present invention is described in further detail:
Fig. 1: structural representation of the present invention.
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 being made up of the conical surface, plane, and flap end is processed with cone, on described valve seat, be processed with groove, 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 65-75 degree, and described cone is 8-12 degree; Described groove is the dovetail groove that bottom land width is greater than width of rebate.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (3)
1. a 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 being made up of the conical surface, plane, flap end is processed with cone, on described valve seat, is processed with groove, 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 65-75 degree, and described cone is 8-12 degree.
3. full lining chlor-alkali special valve according to claim 1, is characterized in that described groove is the dovetail groove that bottom land width is greater than width of rebate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210588170.7A CN103899761A (en) | 2012-12-29 | 2012-12-29 | Full-lined valve special for chlorine-alkali |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210588170.7A CN103899761A (en) | 2012-12-29 | 2012-12-29 | Full-lined valve special for chlorine-alkali |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103899761A true CN103899761A (en) | 2014-07-02 |
Family
ID=50991268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210588170.7A Pending CN103899761A (en) | 2012-12-29 | 2012-12-29 | Full-lined valve special for chlorine-alkali |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103899761A (en) |
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2012
- 2012-12-29 CN CN201210588170.7A patent/CN103899761A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140702 |