CN101749450A - Fluoroplastics full-lining diaphragm valve - Google Patents
Fluoroplastics full-lining diaphragm valve Download PDFInfo
- Publication number
- CN101749450A CN101749450A CN200810244040A CN200810244040A CN101749450A CN 101749450 A CN101749450 A CN 101749450A CN 200810244040 A CN200810244040 A CN 200810244040A CN 200810244040 A CN200810244040 A CN 200810244040A CN 101749450 A CN101749450 A CN 101749450A
- Authority
- CN
- China
- Prior art keywords
- diaphragm
- valve
- fluoroplastics
- full
- fluoroplastic
- 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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- 229920002313 fluoropolymer Polymers 0.000 title claims abstract description 31
- 230000004888 barrier function Effects 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 8
- 230000007547 defect Effects 0.000 abstract 1
- 239000012528 membrane Substances 0.000 description 8
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 5
- 229910052801 chlorine Inorganic materials 0.000 description 5
- 239000000460 chlorine Substances 0.000 description 5
- 231100000614 poison Toxicity 0.000 description 4
- 230000007096 poisonous effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
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- Lift Valve (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The invention discloses a fluoroplastics full-lining diaphragm valve aiming at the defects of the prior art, comprising a valve body, a valve cover, a valve rod, a diaphragm sheet, a diaphragm cushion, a pressing block and a handwheel, wherein, the diaphragm sheet is internally provided with bolts; and the bolts and the diaphragm form a fixed whole. As a further improvement, through holes are processed on the bolts; and the through holes are internally dissolved with fluoroplastics which are dissolved into a whole with the fluoroplastics of the diaphragm sheet. The diaphragm valve has the advantages of more reliable tightness and longer service life.
Description
Technical field
The present invention relates to a kind of valve, particularly a kind of chlorine conveyance conduit special valve belongs to chemical industry dedicated medium conveyance conduit valve field.
Background technique
In the past, the valve of chemical industry for making chlorine and alkali industry was generally the general common valve of sealability.Common valve still is that structure does not possess special-purpose characteristics from material, and it is bad that this valve respectively seals the sealability at position on the one hand, can not stop dielectric leakage well; Under deep-etching, poisonous and hazardous process conditions, often poor sealing performance easily leaks on the other hand, housing is easily bored a hole, and working life is short, can not satisfy the specific (special) requirements of permanently effective conveying poisonous medium, and in a single day chlorine leak out, and can bring serious consequence to surrounding enviroment and personal safety.Membrane valve carries that chlorine etc. is poisonous when adopting, also exist similar shortcoming during easy leaking medium, because membrane valve is as a kind of stop valve of special shape, its open-shut device is a barrier film that soft material is made, by barrier film lower body inner chamber and upper valve cap inner chamber are separated, make parts such as the valve rod that is positioned at barrier film top, flap not be subjected to dielectric corrosion, and can not produce medium and leak outside, its advantage is to have saved the packing box seal structure.But the diaphragm of this membrane valve damages especially easily, should look operating mode and dielectric property and regularly replaces.
In recent years, the specific (special) requirements of carrying according to poisonous, easy leaking medium at some defectives that existing valve uses, has been announced much the technological scheme about the full-lining diaphragm valve that prevents chlorine leakage now in the technology.Such as, on April 20th, 2005 notice of authorization, the patent No. is that 200420027434.2 patent names are the patent of invention of alkali-chloride special-purpose fluoroplastic all-liner membrane valve, the alkali-chloride special-purpose fluoroplastic all-liner membrane valve is disclosed, comprise valve body, valve gap assembly, valve rod, handwheel, briquetting, valve body is built-in with sealed liner, the briquetting below is equipped with the barrier film pad, above-mentioned barrier film pad below is equipped with diaphragm, above-mentioned valve body bottom is the convex body, above-mentioned diaphragm and above-mentioned convex body apical grafting, be equipped with groove on the above-mentioned valve interior wall, above-mentioned sealed liner infiltrates in the above-mentioned groove.The advantage of this patent is that this membrane valve has good seal performance, and is corrosion-resistant, safe and reliable, long service life.But, from practice, this valve still has certain deficiency, it is absolute reliable that sealing also is not really, the diaphragm of this membrane valve is drawn bad easily after long-term the use, cause diaphragm to separate with briquetting and come off, cause valve to close, the phenomenon that causes pipeline to stop even have an accident completely with the barrier film pad.
Summary of the invention
The present invention will solve is easy-to-draw bad, the deficiency that sealing reliability is not good of the diaphragm of the membrane valve that exists in the prior art, provides a kind of rational in infrastructure, diaphragm to be difficult for being drawn bad novel fluoroplastics full-lining diaphragm valve.
For achieving the above object, the present invention is achieved by the following technical solutions: a kind of fluoroplastics full-lining diaphragm valve comprises valve body, valve gap, valve rod, diaphragm, barrier film pad, briquetting, handwheel, diaphragm is built-in with bolt, and described bolt and diaphragm are a fixing integral body.
As a further improvement on the present invention, be processed with through hole on the described bolt, be dissolved with fluoroplastic in the through hole and dissolve in one with the fluoroplastic of diaphragm.As further improving, described bolt end is an ellipsoid.The below of the sealing surface of described valve body is processed with through hole, is dissolved with fluoroplastic in the through hole and constitutes one with the fluoroplastic of outside.
Adopt technique scheme, make the present invention have following advantage:
1, sealing is more reliable.Screw on the diaphragm is because be processed with two through holes, and the fluoroplastic that heat is covered dissolve in the hole and constitute one with the fluoroplastic of outside, and this bolt and diaphragm are completely fixed, and have solved the problem that valve skids and can't tighten up when assembling fully; This improvement has simultaneously also solved valve and has in use drawn bad diaphragm easily, causes diaphragm to separate with briquetting with the barrier film pad and comes off the problem that valve can't be closed fully.
2, longer service life.Below the sealing surface of valve body, be processed with through hole, in through hole, be dissolved with fluoroplastic and constitute one, the problem of fluoroplastic aliquation bulge when this has solved chemical industry pipeline and pipeline again and vacuumizes, the working life of significantly having improved valve with the fluoroplastic of outside.
Description of drawings
Fig. 1: the general structure schematic representation of the embodiment of the invention.
Fig. 2: the structure enlarged diagram of embodiment of the invention septation sheet.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail:
A kind of fluoroplastics full-lining diaphragm valve as shown in Figure 1 is made up of valve body 2, valve gap 3, valve rod 4, diaphragm 5, barrier film pad, briquetting, handwheel 1 etc.Wherein the bolt end is an ellipsoid, is processed with two through holes 6 on it, is dissolved with fluoroplastic in the through hole and dissolves in one with the fluoroplastic of diaphragm, and the below of the sealing surface of valve body is processed with through hole, is dissolved with fluoroplastic in the through hole and constitutes one with the fluoroplastic of outside.
Claims (4)
1. a fluoroplastics full-lining diaphragm valve comprises valve body, valve gap, valve rod, diaphragm, barrier film pad, briquetting, handwheel, and diaphragm is built-in with bolt, it is characterized in that described bolt and diaphragm are a fixing integral body.
2. fluoroplastics full-lining diaphragm valve according to claim 1 is characterized in that being processed with through hole on the described bolt, is dissolved with fluoroplastic in the through hole and dissolves in one with the fluoroplastic of diaphragm.
3. fluoroplastics full-lining diaphragm valve according to claim 1 is characterized in that described bolt end is an ellipsoid.
4. fluoroplastics full-lining diaphragm valve according to claim 1 is characterized in that the below of the sealing surface of described valve body is processed with through hole, is dissolved with fluoroplastic in the through hole and constitutes one with the fluoroplastic of outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810244040A CN101749450A (en) | 2008-12-12 | 2008-12-12 | Fluoroplastics full-lining diaphragm valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810244040A CN101749450A (en) | 2008-12-12 | 2008-12-12 | Fluoroplastics full-lining diaphragm valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101749450A true CN101749450A (en) | 2010-06-23 |
Family
ID=42476875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810244040A Pending CN101749450A (en) | 2008-12-12 | 2008-12-12 | Fluoroplastics full-lining diaphragm valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101749450A (en) |
-
2008
- 2008-12-12 CN CN200810244040A patent/CN101749450A/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 |
Open date: 20100623 |