CN203670220U - Large liner plastic anti-corrosion and wear-resistant desulfurization circulating pump - Google Patents
Large liner plastic anti-corrosion and wear-resistant desulfurization circulating pump Download PDFInfo
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- CN203670220U CN203670220U CN201320737649.2U CN201320737649U CN203670220U CN 203670220 U CN203670220 U CN 203670220U CN 201320737649 U CN201320737649 U CN 201320737649U CN 203670220 U CN203670220 U CN 203670220U
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Abstract
A large liner plastic anti-corrosion and wear-resistant desulfurization circulating pump comprises a pump shell, a pump cover and a liner which is located inside the pump shell, is formed by splicing blocks and is provided with plastics in an inlaid mode, wherein an anti-corrosion layer is additionally arranged on the surface of an inner cavity of the pump shell, and the anti-corrosion layer is made of roller coating plastics or painted resin or coated glass fiber reinforced plastics, and solves the problem of manufacturing a large liner plastic desulfurization circulating pump. Through the technology, the large liner plastic anti-corrosion and wear-resistant desulfurization circulating pump is reasonable in price, and resistant to wear and corrosion, and improves quality of products, even under the condition that the inlaid liner leaks materials, a metal outer shell of the desulfurization is not corroded, and normal operation of the pump is guaranteed.
Description
Technical field
The utility model relates to centrifugal pump and makes field, relates in particular to the making of large desulfurization circular centrifugal pump.
Background technique
The Sprayer Circulation centrifugal pump of applying in power plant desulfurization engineering, require wear-resistant, corrosion protection, flow large, in existing sulfur removal technology, the circulated sprinkling slurries that are lime process, calcium magnesium method, ammonia process spray absorber all contain a large amount of calcium sulfate, very serious to the abrasion of pump, therefore the requirement of the centrifugal circulating pump of application is wear-resistant, in the medium of simultaneously carrying, also contains the corrosive elements such as sulphurous acid, chlorion, basic species, and pump is had to higher requirement for anticorrosion.In addition, the flow of this type of circulated sprinkling pump is very large, the circulated sprinkling pump of larger heat-engine plant desulfurized system, and traffic requirement is at 3000 ~ 10000m
3in/h, the pump housing of this class pump is very huge, if made of two phase stainless steel, not only technique is very difficult, and price is also very expensive, sees 8000m with regard to existing market
3the desulfuration recycle pump of/h, mostly still by the very expensive external metal pump of import price.
The wear resistance of steel lining ultra-high molecular mass polyethylene centrifugal pump, the technological requirement that rotproofness can meet electric power desulfuration recycle pump completely, but owing to being limited to mold pressing plastic coating process, be difficult to make 3000m
3steel lining ultra-high molecular mass polyethylene pump more than/h, mold pressing plastic coating process, reason is that the pump housing is too large, mould is too large, the inequality of heating, yield rate is extremely low, for extremely, there is no in the industry method mold pressing plastic coating process and makes large-scale desulfuration recycle pump up till now.
For solving an above difficult problem, the utility model people is (see figure 1) in ZL201220540366.4, CN201210402866.6 patent once, adopt the interior piecemeal splicing of metal pump shell 2.1 lining high molecular weight polyethylene board material 2.2, the method being fixed at mesosphere cast thermosetting resin 2.3 again, the plastic inner lining problem of solution large desulfurization pump.But by practice, find that lining soldered can produce cracking, sealing-off, pump intracavity liquid can spill corroding metal shell, produces pump and damages, and due to pump cavity shape complex structure, high molecular weight polyethylene board material weldability is the reason such as poor again, is difficult to reparation.
For making flow at 3000m
3large desulfurization pump more than/h, the method that the utility model people also moulds with painting (rolling), coats the plastic coatings such as PO, PE, PP, although the anti-corrosion function having had at metal shell inner chamber, but because these materials are not wear-resistant, eventually cannot be applied to heat-engine plant desulfurized engineering.
Therefore the manufacturing process that, lining is moulded large desulfurization recycle pump also must be improved.
Summary of the invention
The utility model, for the deficiencies in the prior art, provides a kind of without mold pressing, convenient making, not only anticorrosion but also wear-resisting, is not also afraid of the large-scale lining of liner sealing-off, internal leakage and moulds anticorrosion antiwear desulfuration recycle pump and preparation method thereof.
Key problem in technology of the present utility model is to be coated with last layer anticorrosive coat to reach corrosion-resistant function at the inner chamber of metal pump case, again in the pump case of the anticorrosive coat coating, by the method for piecemeal splicing, the plastic inner lining of lining one deck high molecular weight polyethylene board material, to reach the function of abrasionproof, then at the plastic inner lining of lining and scribble in the gap between the pump case of anticorrosive coat cast thermosetting resin, the panelling of secure liner, the compressive resistance ability of lifting lined with polyethylene plate.Its concrete technological scheme is: a kind of large-scale lining is moulded anticorrosion antiwear desulfuration recycle pump, comprise the piecemeal splicing lining plastic inner lining in pump case, pump cover and pump case, it is characterized in that described pump case surface of internal cavity has additional an anticorrosive coat, described anticorrosive coat is roller coating plastics, brushing resin or coating glass fiber reinforced plastic.
As preferably, in the gap between plastic inner lining and the anticorrosive coat of piecemeal splicing lining, be cast with thermosetting resin.
As preferably, plastic inner lining is ultra-high molecular weight polyethylene or polypropylene.
As preferably, ultra-high molecular weight polyethylene molecular weight is 400 ~ 6,000,000.
In order to promote stretch-proof, the anti-cracking performance of welding lining layer seam crossing, method is welded with plastic board again in the inner and/or outer surface dislocation of described plastic inner lining welding place preferably.
A kind of large-scale lining is moulded anticorrosion antiwear desulfuration recycle pump making method, it is characterized in that with common metal steel plate or and casting mold steel welding metal pump case, pass through cutting, boring is to meeting after the requirement of installation dimension, and then to grinder or wire brush instrument polishing rust cleaning for pump case internal surface, and then heat again after 180 ~ 250 DEG C, at internal surface roller coating one deck PO plastic anti-corrosion layer, it is cooling after it is certainly molten shinny, repair again deflashing stand-by, get again the high molecular weight polyethylene board material that 15 ~ 25mm is thick, be divided into the needed shape of the lining pump housing and form plastic inner lining, be bumped in the metal pump case of coated anti-corrosion layer, weld again, after welding completion, the thermosetting resin of annotating in gap between plastic inner lining and anticorrosive coat again, resin is 191 epoxy resin, the method of filling is to punch on metallic case, after resin solidification, carry out again cutting, then welding is served as a contrast to the pump case of moulding, impeller, after spindle combinations is installed, obtain complete pump case.
As preferably, anticorrosive coat thickness is 1 ~ 5mm.Further preferably anticorrosive coat thickness is 1 ~ 3mm.Effectively prevent too thick hanging and prevent too thin leakage acid.
For the convenient anticorrosive coat of making metal inside pump casing, can be to make of plastic-coated, can be also to make of coating glass fiber reinforced plastic, can also make by the method for other anticorrosive coat of brushing.
In order to make welding at pump inner chamber plastic board, the working pressure when operation of energy bearing pump, method is preferably, in the gap between corrosion-inhibiting coating and welding plastic liner, cast thermosetting resin, after solidifying, can increase considerably the interior anti-current body intensity of pressure of inlaying layer.
Make for convenient, the plastic plate of the plastic inner lining of splicing in pump case, can select high molecular weight polyethylene board material, also can use the plate material such as high density polyethylene (HDPE), polypropylene of good welding performance, the reason of choosing can be depending on the wear-resisting requirement of fed sheet of a media.
The beneficial effects of the utility model: a manufacture difficult problem that overcomes and solved large-scale lining and mould desulfuration recycle pump, by technique, can manufacturing price economy, the large-scale plastic lined pump of wear-resisting corrosion-resistant again; Promoted the quality of product, even in the situation that interior lining layer leaks, desulfur pump metal shell also can not be corroded, and ensures that pump machine normally moves; Well social economic benefit, large-scale plastic lined pump due to wear-resisting property and antiseptic property very superior, therefore have very long working life, general working life is about 20,000 hours.But manufacture cost is very low, with the import metal desulfuration recycle pump ratio of same life-span, same model, its product price only has the former 20%, therefore has fabulous social economic benefit; Pump housing reproducible utilization, meets environmental requirement, after the wearing and tearing of pump case inner chamber, can again weld the lining that lining is new and again utilize.
Brief description of the drawings
Fig. 1 is the structural representation of prior art.
Fig. 2 structural representation of the present utility model.
Fig. 3 is the A partial enlarged drawing of Fig. 1.
Schematic diagram is welded in the weld seam dislocation of Fig. 4 plastic inner lining inside corners place again.
Schematic diagram is welded in the weld seam dislocation of the outer corner of Fig. 5 plastic inner lining again.
In Fig. 6 plastic inner lining plane, schematic diagram is welded in weld seam dislocation again.
Embodiment
A kind of large-scale lining is moulded anticorrosion antiwear desulfuration recycle pump, comprise the piecemeal splicing lining plastic inner lining 003 in pump case 001, pump cover 004 and pump case 001, described pump case 001 surface of internal cavity has additional an anticorrosive coat 002, and described anticorrosive coat 002 is roller coating plastics, brushing resin or coating glass fiber reinforced plastic.In gap between plastic inner lining 003 and the anticorrosive coat 002 of piecemeal splicing lining, be cast with thermosetting resin 006.Plastic inner lining 003 is ultra-high molecular weight polyethylene or polypropylene.Ultra-high molecular weight polyethylene molecular weight is 400 ~ 6,000,000.The inner and/or outer surface dislocation of described plastic inner lining 003 welding place 031 is welded with plastic board 005 again.
Embodiment 1: as Fig. 2, shown in 3, with common metal steel plate or and casting mold steel welding metal pump case 001, pass through cutting, boring is to meeting after the requirement of installation dimension, and then internal sand for surface turbine, the instrument polishing rust cleaning such as wire brush, and then heat again after 180 ~ 250 DEG C, at internal surface roller coating one deck PO plastic anti-corrosion layer 002, it is cooling after it is certainly molten shinny, repair again deflashing stand-by, get again the high molecular weight polyethylene board material that 15 ~ 25mm is thick, be divided into the needed shape of the lining pump housing, to being set in spiral case turn of bilge, pump liquid outlet, the mold insert of the irregular shapes such as liquid outlet throat is made in advance, the method of making is by the plastic board after cutting apart, heat to 180 ~ 220 DEG C of temperature, put into metal molding die or and use apparatus moulding, after cooling and shaping, accomplish fluently cut, be bumped in the metal pump case 001 of plastic-coated, weld again and form plastic inner lining 003, after welding completion, the thermosetting resin 006 of annotating in the gap between plastic inner lining 003 and anticorrosive coat 002 again, resin can be selected 191 epoxy resin, the method of filling is to punch on metallic case, after resin solidification, carry out again cutting, then welding is served as a contrast to the pump case 001 of moulding, impeller, after the assembly combinations such as main shaft are installed, obtain complete pump case.Through pressure testing, trial run, paint, packaging, can obtain can be wear-resisting, again can be anticorrosion, be not afraid of interior lining plate sealing-off cracking, easy to make, manufacture cost light large desulfurization recycle pump again.
The rotational moulding anticorrosive coat 002 of metal pump case 001 inner chamber, THICKNESS CONTROL, between 1 ~ 5mm, should prevent too thick hanging preferably, prevents again too thin leakage acid, preferred thickness is that 1 ~ 3mm is better.
For convenient welding, the ultra-high molecular weight polyethylene mold insert at pump discharge and spiral case position, method is to make preset piece by the method for compression molding preferably.
In the present embodiment, the material of the plastic-coated anticorrosive coat 002 of metal inside pump casing can be selected each shaped material of anti-corrosion function, and the powder roller coating material such as routine PP, PE, also can select the spray paints such as epoxy.
Before and after in the present embodiment, the lining such as pump cover, impeller is moulded assembly, because volume is relatively little, still can take the common process making of compression molding.Making does not affect the substantive model utility of this patent like this.
Embodiment 2:(is shown in Fig. 2,3)
Lining is moulded desulfuration recycle pump as described in Example 1, its implementation methods is, first the metal pump case 001 blank cutting of casting, sand removal polishing overlap, and then at the Corrosion Protection of Fiber Reinforced Plastics layer 002 of inner chamber coating one deck 1 ~ 3mm of pump case thickness, repair again after deflashing, by the method described in embodiment 1, lining wear-resistant plastic liner 003.
In embodiment, anticorrosive coat 002 coating material of pump case inner chamber, also can select anti-corrosion function; and the material of convenient construction again; as brushing type resin, rubber, coating etc., the conversion of above-mentioned material does not change substantive model utility, all in this patent protection domain.
Welding plastic inner lining 003 lining material in plastic-coated metal pump case 001 described in the present embodiment; be preferably 400 ~ 6,000,000 molecular weight ultra-high molecular weight polyethylenes; but according to carry liquid solid content number, the degree of wear size; also can inferior select the good materials of weldability such as modified polypropene, polyethylene, PVC＝polyvinyl chloride, select these materials all within this patent protection domain.
Claims (5)
1. a large-scale lining is moulded anticorrosion antiwear desulfuration recycle pump, comprise the piecemeal splicing lining plastic inner lining in pump case, pump cover and pump case, it is characterized in that described pump case surface of internal cavity has additional an anticorrosive coat, described anticorrosive coat is roller coating plastics, brushing resin or coating glass fiber reinforced plastic.
2. the large-scale lining of one according to claim 1 is moulded anticorrosion antiwear desulfuration recycle pump, it is characterized in that being cast with thermosetting resin in the gap between plastic inner lining and the anticorrosive coat of piecemeal splicing lining.
3. the large-scale lining of one according to claim 1 is moulded anticorrosion antiwear desulfuration recycle pump, it is characterized in that plastic inner lining is ultra-high molecular weight polyethylene or polypropylene.
4. the large-scale lining of one according to claim 3 is moulded anticorrosion antiwear desulfuration recycle pump, it is characterized in that ultra-high molecular weight polyethylene molecular weight is 400 ~ 6,000,000.
5. the large-scale lining of one according to claim 1 is moulded anticorrosion antiwear desulfuration recycle pump, it is characterized in that the inner and/or outer surface dislocation of described plastic inner lining welding place is welded with plastic board again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320737649.2U CN203670220U (en) | 2013-11-21 | 2013-11-21 | Large liner plastic anti-corrosion and wear-resistant desulfurization circulating pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320737649.2U CN203670220U (en) | 2013-11-21 | 2013-11-21 | Large liner plastic anti-corrosion and wear-resistant desulfurization circulating pump |
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| CN203670220U true CN203670220U (en) | 2014-06-25 |
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| CN201320737649.2U Expired - Fee Related CN203670220U (en) | 2013-11-21 | 2013-11-21 | Large liner plastic anti-corrosion and wear-resistant desulfurization circulating pump |
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| CN (1) | CN203670220U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671128A (en) * | 2013-11-21 | 2014-03-26 | 宜兴市宙斯泵业有限公司 | Large-scale plastic-lining anticorrosive wear-resisting desulfuration circulating pump and manufacturing method thereof |
| CN104142165A (en) * | 2014-08-13 | 2014-11-12 | 浙江中合仪表科技有限公司 | Light-weight stainless steel water meter shell |
-
2013
- 2013-11-21 CN CN201320737649.2U patent/CN203670220U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671128A (en) * | 2013-11-21 | 2014-03-26 | 宜兴市宙斯泵业有限公司 | Large-scale plastic-lining anticorrosive wear-resisting desulfuration circulating pump and manufacturing method thereof |
| CN103671128B (en) * | 2013-11-21 | 2016-01-06 | 宜兴市宙斯泵业有限公司 | A kind of large-scale lining moulds anticorrosion antiwear desulfuration recycle pump and preparation method thereof |
| CN104142165A (en) * | 2014-08-13 | 2014-11-12 | 浙江中合仪表科技有限公司 | Light-weight stainless steel water meter shell |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20181121 |
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| CF01 | Termination of patent right due to non-payment of annual fee |