CN2207485Y - Stop valve for chlorine alkali - Google Patents
Stop valve for chlorine alkali Download PDFInfo
- Publication number
- CN2207485Y CN2207485Y CN 94231735 CN94231735U CN2207485Y CN 2207485 Y CN2207485 Y CN 2207485Y CN 94231735 CN94231735 CN 94231735 CN 94231735 U CN94231735 U CN 94231735U CN 2207485 Y CN2207485 Y CN 2207485Y
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- CN
- China
- Prior art keywords
- sealing
- seal
- sealing element
- valve
- stop valve
- 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 relates to a stop valve used for controlling medium flow in a pipeline on a chlorine alkali pipeline. Because the sealing surfaces of an upper sealing element and a lower sealing element adopt the structure of plane seal, elastic seal material with corrosion resistance is pressed and sintered in the heterogeneous slot of the upper sealing element, and an alloy material layer with corrosion resistance is sprayed and welded on the sealing surface of the lower sealing element. A tapered boss is arranged on a valve rod, and elastic sealing element material with corrosion resistance is pressed and sintered in the heterogeneous slot of a sealing element which is reversely sealed. A guide structure is composed of the inner wall of the middle flange of a valve body and the upper sealing element. The favorable concentricity of the upper sealing element and the lower sealing element can be ensured, and the utility model has the advantages of strict seal, corrosion resistance, safe use and long service life.
Description
The utility model is that a kind of chemical industry that relates to is used to produce chlor-alkali or uses the valve that control media flows on the chlor-alkali pipeline.
Relevant by retrieval patent documentation still finds no the valve identical with the utility model structure.China's chemical industry is not specialized in the chlor-alkali stop valve at present, so the valve that is used on the chlor-alkali pipeline all uses common stop valve, because sealing surface Connecting format and structure are unreasonable, easily leak, the seal face materials of Sealing is corrosion resistant not, and valve gap, valve body all adopt gray cast iron, mechanical strength is relatively poor, easily cause housing explosion or fracture, can not reach the requirement of chemical industry row access cycle, cause human injury and economic loss.
The purpose of this utility model provides a kind of sealing configuration novelty, good seal performance, corrosion resistant, safe and reliable chlor-alkali stop valve.
Technical characteristics of the present utility model is: chlor-alkali comprises valve gap assembly, valve body with stop valve, lower seal, middle flange gasket, handwheel, it is characterized in that: with the difference of prior art be: the sweet front cover of upper and lower Sealing adopts plane structure, last Sealing is provided with special-shaped groove, be suppressed with the elaxtic seal of corrosion resistant in the groove, and being sintered to one with last Sealing, the sealing surface surfacing of lower seal has the anticorrosion alloy layer.
Be provided with on the valve rod that links with valve gap with valve gap on the back seal spare cone boss of fitting, surfacing cemented carbide on the conical seal (contact) face of boss.
Back seal spare is housed below valve gap, which is provided with special-shaped groove, in special-shaped groove, be suppressed with the corrosion resistant elaxtic seal (teflon) that can satisfy usage requirement, and be sintered into one with base material.
The middle flange internal chamber wall of valve body and last Sealing cylindrical constitute can satisfy the upper and lower guide structure that is sealed on the same axis.Can guarantee upper and lower Sealing good concentricity.
The utility model is installed on the pipeline, electronic, surging opens and closes or artificial opening/shutting valve, because compacting sintering has the corrosion resistant elastic material in the special-shaped groove of last Sealing, when valve rod descends, the sealing plane of going up sweet sealing is close to the sealing plane of lower seal, and the sealed elastomer on this moment in the Sealing abnormity groove produces resiliently deformable, upper and lower sealing surface firmly is adjacent to, and sealing is tight.After valve rod rises to Sealing and fully opens, the boss conical seal (contact) face on the valve rod promptly with valve gap on the conical seal (contact) face of back seal spare fit tightly, can guarantee not leak, can under the valve working state, change filler again.The middle flange inner chamber of valve body and last Sealing cylindrical constitute guide structure, guarantee upper and lower Sealing good concentricity.
The utility model has the advantages that: structural design is new reasonable, owing to be provided with valve body and last Sealing has guide function, compacting sintering has the corrosion resistant elastic material in the special-shaped groove of last Sealing, and its sealing effect is better than common stop valve; Because the sealing surface surfacing of lower seal has the anticorrosion alloy layer, makes the corrosion resistant performance of valve good.Valve body, valve gap, gland adopt spheroidal graphite cast iron or No. 25 Fine Steel Casting irons or 20-35 forging to cause type, and its mechanical strength is better than common stop valve; Because the corrosion resistant elastic material and the matrix of compacting are sintered to one in the special-shaped groove of back seal spare, do not come off, safe and reliable, the life-span is long, can satisfy the chemical industry requirement of the life cycle of operation continuously, its every performance index all reach the regulation of the countries concerned's standard.
Below in conjunction with accompanying drawing, the utility model embodiment is described.
Chlor-alkali stop valve structure schematic representation among Fig. 1.
Among the figure: 1, valve body, 2, lower seal, 3, go up Sealing, 4, middle flange gasket, 5, back seal spare, 6, valve gap, 7, filler, 8, gland, 9, valve rod, 10, Stem Mut, 11, handwheel.
At the top of valve gap 6 Stem Mut 10 is housed, in the bottom of valve gap back seal spare 5 is housed, compacting sintering sealed elastomer in the special-shaped groove of back seal spare, two of valve gap filler chamber, the bolt of the gland 8 of control filler is housed, be processed with cone boss on the valve rod 9, surfacing has hard alloy layer on its conical seal (contact) face, valve rod 9 is inserted filler 7 after passing filler chamber, overlaps upper press cover 8 again, and valve rod 9 is twisted mutually with Stem Mut 10.Sealing 3 on stem bottom is equipped with, and compacting sintering has the corrosion resistant elaxtic seal in the special-shaped groove of last Sealing.In last Sealing, be provided with the space, place divided ring in it,, reach upper and lower Sealing good concentricity to control the swing degree of Sealing.Thereby constitute the valve gap assembly.The dregs of cleaning valve body are equipped with lower seal 2 in valve body 1, surfacing has the anticorrosion alloy layer on the sealing plane of lower seal.Flange seal pad 4 during the sealing concave surface of flange is placed on valve body adopts bolton to connect valve gap assembly and valve body.At the valve rod top handwheel 11 is housed.Valve body, valve gap, gland adopt spheroidal graphite cast iron or No. 25 Fine Steel Casting irons or 20-35 forging to cause type.The sealing surface of upper and lower Sealing and back seal spare adopts ferrous alloy, nickel-base alloy, Austenitic Stainless Steel surfacing or built-up welding.Filler adopts teflon.
Claims (4)
1, a kind of chlor-alkali comprises valve gap assembly, valve body, lower seal, middle flange gasket, handwheel with stop valve, it is characterized in that: the sealing surface of upper and lower Sealing is made as plane sealing structure, last Sealing is provided with special-shaped groove, compacting sintering has the corrosion resistant elaxtic seal in the groove, and being sintered to one with last Sealing, the sealing surface surfacing of lower seal has the anticorrosion alloy layer.
2, chlor-alkali stop valve according to claim 1 is characterized in that: back seal spare is housed below valve gap, which is provided with special-shaped groove, compacting sintering has the corrosion resistant elaxtic seal in special-shaped groove, and is sintered to one with base material.
3, chlor-alkali stop valve according to claim 2 is characterized in that: be provided with on the valve rod that links with valve gap with valve gap on the cone boss that can fit of back seal spare, surfacing has the anticorrosion alloy material layer on the conical seal (contact) face of boss.
4, chlor-alkali stop valve according to claim 1 is characterized in that: the middle flange internal chamber wall of valve body and last Sealing cylindrical constitute can satisfy the guide structure of upper and lower Sealing on same axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94231735 CN2207485Y (en) | 1994-12-26 | 1994-12-26 | Stop valve for chlorine alkali |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94231735 CN2207485Y (en) | 1994-12-26 | 1994-12-26 | Stop valve for chlorine alkali |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2207485Y true CN2207485Y (en) | 1995-09-13 |
Family
ID=33843503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94231735 Expired - Fee Related CN2207485Y (en) | 1994-12-26 | 1994-12-26 | Stop valve for chlorine alkali |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2207485Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104696585A (en) * | 2015-03-30 | 2015-06-10 | 南通市天源阀门制造有限公司 | Multi-protection corrugated pipe stop valve for chlorine |
-
1994
- 1994-12-26 CN CN 94231735 patent/CN2207485Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104696585A (en) * | 2015-03-30 | 2015-06-10 | 南通市天源阀门制造有限公司 | Multi-protection corrugated pipe stop valve for chlorine |
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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 |