CN203023536U - Corrosion-resistant ball valve - Google Patents
Corrosion-resistant ball valve Download PDFInfo
- Publication number
- CN203023536U CN203023536U CN 201220746179 CN201220746179U CN203023536U CN 203023536 U CN203023536 U CN 203023536U CN 201220746179 CN201220746179 CN 201220746179 CN 201220746179 U CN201220746179 U CN 201220746179U CN 203023536 U CN203023536 U CN 203023536U
- Authority
- CN
- China
- Prior art keywords
- valve
- corrosion
- ball valve
- resistant ball
- spool
- 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 - Lifetime
Links
- 238000005260 corrosion Methods 0.000 title claims abstract description 34
- 230000007797 corrosion Effects 0.000 title claims abstract description 24
- 229920002313 fluoropolymer Polymers 0.000 claims abstract description 7
- 238000005507 spraying Methods 0.000 claims description 20
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 9
- 229920002530 polyetherether ketone Polymers 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 3
- 239000010962 carbon steel Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000002253 acid Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- 150000007516 brønsted-lowry acids Chemical class 0.000 description 2
- 150000007528 brønsted-lowry bases Chemical class 0.000 description 2
- 229920006351 engineering plastic Polymers 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 229910000792 Monel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910000856 hastalloy Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Images
Abstract
The utility model relates to a corrosion-resistant ball valve. The corrosion-resistant ball valve comprises a valve body, a valve core arranged in the valve body, and a valve rod connected with the groove of the valve core, wherein a fluoroplastic layer is arranged between the valve core and the valve rod; and corrosion-resistant layers are arranged on the inner surface of the valve body, the surface of the valve core, and the surface of the valve rod. The corrosion-resistant ball valve disclosed by the utility model can be used for stably conveying a corrosive fluid medium for a long time, as well as is long in service life, simple and convenient to machine, safe, and low in cost.
Description
Technical field
The utility model belongs to the ball valve machining field, is specifically related to a kind of corrosion resistant ball valve.
Background technique
Ball valve is the controlling component in fluid delivery system, can be used for controlling various types of Fluid Flow in As.Existing ball valve is the spool assembly parts, connects to realize the open and close of ball valve by valve rod, to reach the requirement of adjust flux.Extract in the production process of aluminium oxide at acid system (hydrochloric acid), carry when having the active sulfur body medium, metal ball-valve very easily is corroded, and can't realize long-term use, causes continually and changes, and this has also brought the wasting of resources when increasing user cost.
At present, the material that uses of the valve body of ball valve, spool and valve rod mainly comprises stainless steel, monel metal, Hastelloy, No. 20 alloys, titanium alloy, tantalum material, rubber, pottery etc.Adopt the ball valve that traditional material is produced to extract in the production process of aluminium oxide at acid system, operating life is shorter, and the potential safety hazard that exists, unstable properties; In addition, some metallic material is expensive, and the ball valve cost of production is higher.
Polyether-ether-ketone is existing polymer material, can be commercially available, and it has excellent chemical resistance, is insoluble to common solvent, at high temperature is insoluble to other bronsted lowry acids and bases bronsted lowries except the concentrated sulphuric scid; Its wear resistance and fatigue resistance are all the most outstanding in thermoplastic resin, because it is the special engineering plastics that toughness and rigidity have both and average out, can use continuously below 250 ℃.
Industrial production is continuous in order to make, safe operation, reduces simultaneously the cost of production of ball valve, and still there is demand in people for corrosion-resistant (especially strong acid) ball valve.
The model utility content
For the deficiencies in the prior art, the purpose of this utility model is to provide a kind of corrosion resistant ball valve.
Corrosion resistant ball valve of the present utility model, comprise valve body, be placed in described valve inner spool, with the valve rod that the groove of described spool is connected, have fluoroplastics layer between described spool and described valve rod; All there is anti-corrosion layer on the surface of the internal surface of described valve body, described spool and the surface of described valve rod.
Preferably, described anti-corrosion layer is spraying polyether-ether-ketone layer.
Preferably, the thickness of described anti-corrosion layer is 1 ~ 4mm.
Preferably, the material of described valve body, spool and valve rod is carbon steel.
Corrosion resistant ball valve of the present utility model can be carried active sulfur body medium (high-temperature acidic slip) steadily in the long term, long service life, processing easy, safe, with low cost.
Description of drawings
Fig. 1 is the structural representation of corrosion resistant ball valve of the present utility model.
Reference character:
1, valve body
2, spool
3, valve rod
4, anti-corrosion layer
5, fluoroplastics layer
Embodiment
The following examples only are used for explaining the utility model, and unrestricted the utility model.
As seen from Figure 1, corrosion resistant ball valve of the present utility model, comprise valve body 1, be placed in described valve body 1 inside spool 2, with the valve rod 3 that the groove of described spool 2 is connected, have fluoroplastics layer 5 between described spool 2 and described valve rod 3; All there is anti-corrosion layer 4 on the surface of the internal surface of described valve body 1, described spool 2 and the surface of described valve rod 3.
Preferably, described anti-corrosion layer 4 is spraying polyether-ether-ketone layer.Polyether-ether-ketone is existing polymer material, can be commercially available (for example, can be commercially available from Changchun Jida special plastic engineering Co., Ltd), it has excellent chemical resistance, be insoluble to common solvent, at high temperature be insoluble to other bronsted lowry acids and bases bronsted lowries except the concentrated sulphuric scid; Its wear resistance and fatigue resistance are all the most outstanding in thermoplastic resin, because it is the special engineering plastics that toughness and rigidity have both and average out, can use continuously below 250 ℃.
The price comparison of polyether-ether-ketone is expensive, and the injection moulded products cost is higher.Therefore, adopt spraying coating process, control the thickness of coating, can overcome the higher problem of polyether-ether-ketone injection-molded article cost.
Described spraying adopts method known to those skilled in the art to realize.For example, to spray-coating surface spraying polyether-ether-ketone powder or liquid polyether-ether-ketone, control coating thickness, manual control coating uniformity coefficient according to the operating time with plastic spraying equipment when spraying.
The technique of spraying is simple and easy to control, economizes in raw materials, and cost of production is significantly reduced, and coating is evenly firm, and good product quality finally makes corrosion resistant ball valve stable performance and excellent combination property.
Generally speaking, before spraying, to the position of required spraying (or claim spray-coating surface, be the surface of the internal surface of described valve body, described spool and the surface of described valve rod) need polish successively, oil removing, sand blast.After spraying, need carry out drying to described ball valve and process.Described polishing, oil removing, sandblast and dry the processing adopt method known to those skilled in the art and equipment to carry out.For example, adopting electric grinding machine reciprocating motor grinder for polishing to polish makes spray-coating surface smooth smooth; Can utilize the heating equipments such as oven or baking oven that spray-coating surface is heated and remove top greasy dirt; Select sandblasting machine to the aluminium-plated sand of spray-coating surface, described aloxite order number is 80 orders, to remove the oxide layer of spray-coating surface, further reaches the purpose of cleaning; Ball valve goods after spraying are placed in baking oven, are warming up to uniform temperature, dry certain hour with the baking oven outage, makes goods be chilled to room temperature with stove after coating melting to be painted.
After dry the end, with electrical spark leak detection instrument, workpiece is detected, as leak source occurs, should repeat above-mentioned spraying and Dry run.
The thickness of described anti-corrosion layer 4 is 1 ~ 4mm.
In this application, described fluoroplastics layer solves the problem of valve seal.
The material of described valve body, spool and valve rod is carbon steel.
The utility model is processed because the position with ball valve contact corrosion flowing medium all sprays resistant material, therefore ball valve and active sulfur body medium are separated fully, therefore the material of main part of ball valve adopts Ordinary Steel to get final product, can greatly reduce production costs, can solve the corrosion problems of original metal ball-valve; Can solve again the problem that adopts original special anticorrosive price; Simultaneously the corrosion-resistant fluoroplastics layer due to the spool of ball valve and valve rod joint has certain elastic strain, helps to solve the problem of sealing.
Compare with the ball valve of prior art, acid resistance, the wear resistance of the utility model corrosion resistant ball valve significantly improve, and long working life, use safety, need not frequently to change ball valve, to consecutive production and the aspect such as to reduce costs significant.
Therefore, corrosion resistant ball valve of the present utility model can be widely used in the position that acid system (hydrochloric acid) extracts contact corrosion flowing medium (acid slime) in aluminum oxide production process.
It will be understood by those skilled in the art that the utility model is made some modifications or changed also should be within the utility model claim limited range.
Claims (4)
1. a corrosion resistant ball valve, is characterized in that, it comprises valve body, is placed in the spool of described valve inner, with the valve rod that the groove of described spool is connected, have fluoroplastics layer between described spool and described valve rod; All there is anti-corrosion layer on the surface of the internal surface of described valve body, described spool and the surface of described valve rod.
2. corrosion resistant ball valve according to claim 1, is characterized in that, described anti-corrosion layer is spraying polyether-ether-ketone layer.
3. corrosion resistant ball valve according to claim 1 and 2, is characterized in that, the thickness of described anti-corrosion layer is 1 ~ 4mm.
4. corrosion resistant ball valve according to claim 3, is characterized in that, the material of described valve body, spool and valve rod is carbon steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220746179 CN203023536U (en) | 2012-12-28 | 2012-12-28 | Corrosion-resistant ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220746179 CN203023536U (en) | 2012-12-28 | 2012-12-28 | Corrosion-resistant ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203023536U true CN203023536U (en) | 2013-06-26 |
Family
ID=48647523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220746179 Expired - Lifetime CN203023536U (en) | 2012-12-28 | 2012-12-28 | Corrosion-resistant ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203023536U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257857A (en) * | 2015-11-06 | 2016-01-20 | 浙江有氟密阀门有限公司 | Steel-lining fluoroplastic ceramic valve |
| WO2016011556A1 (en) * | 2014-07-23 | 2016-01-28 | George Kim | Protective composite surfaces |
-
2012
- 2012-12-28 CN CN 201220746179 patent/CN203023536U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016011556A1 (en) * | 2014-07-23 | 2016-01-28 | George Kim | Protective composite surfaces |
| CN105257857A (en) * | 2015-11-06 | 2016-01-20 | 浙江有氟密阀门有限公司 | Steel-lining fluoroplastic ceramic valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130626 |
|
| CX01 | Expiry of patent term |