CN102913483A - Large plastic-lining anticorrosion pump and manufacturing method thereof - Google Patents
Large plastic-lining anticorrosion pump and manufacturing method thereof Download PDFInfo
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- CN102913483A CN102913483A CN2012104028666A CN201210402866A CN102913483A CN 102913483 A CN102913483 A CN 102913483A CN 2012104028666 A CN2012104028666 A CN 2012104028666A CN 201210402866 A CN201210402866 A CN 201210402866A CN 102913483 A CN102913483 A CN 102913483A
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Abstract
The invention discloses a large plastic-lining anticorrosion pump which comprises a metal volute and a plastic lining layer on the inner wall of the metal volute, wherein the plastic lining layer is formed by splicing and welding a plurality of plastic templates, and solid bodies are poured between the metal volute and the plastic lining layer for connection and location. A manufacturing method of the anticorrosion pump comprises the following steps of: cutting the plurality of plastic templates according to the size of the volute; heating the plastic templates in an electronic-control heating furnace to 180-220 DEG C, and keeping the plastic templates at the temperature for 1 hour to 2 hours before the softened plastic templates are taken out; bending and forming the softened plastic templates by virtue of a shaper the shape of which is same as that of the inner wall of the metal volute, and cooling and forming the softened plastic templates in the shaper; splicing and welding the shaped plastic templates to form the plastic lining layer, and locating the plastic lining layer in the metal volute; and pouring the solid bodies between the metal volute and the plastic lining layer, thus obtaining the plastic-lining anticorrosion pump after the solid bodies are cured. By virtue of the manufacturing method, the product quality can be improved greatly, the manufacturing cost can be reduced greatly, and the safety performance of production can be enhanced.
Description
Technical field
Lining is moulded corrosion protection pump: be applied to the industries such as smelting, chemical industry, electric power, relate to machinery industry.
Background technique
Lining is moulded corrosion protection pump and is widely used in the industries such as smelting, chemical industry, electric power, relates to machinery industry, and its medium-and-large-sized lining is moulded corrosion protection pump, and flow is at 1500m
3/ h, the corrosion protection pump of import latus rectum more than 300mm is used for the power plant desulfurization circulation, and the posies such as sulfuric acid plant's diluted acid circulation have long service life, the advantage such as anticorrosion, wear-resistant.
Flow is at 1500m
3The lining of/h is moulded the manufacture difficulty of corrosion protection pump, it mainly is the lining of the spiral case of pump, the volute shape of lining be by open behind the metal mold processed by heat, the operation such as hot melt, mold pressing, the demoulding, processing makes, generally all adopt polypropylene, polyethylene or ultra-high molecular weight polyethylene etc. as the raw material of lining, lining is served as a contrast on the inwall of pump spiral case, form one deck anticorrosive coat, reach the purpose of anticorrosion antiwear.
But this lining making method has the following disadvantages:
One, the pump case volume is large, and diameter reaches 1.2 meters, and flow is at 1500m
3The plastic lined pump spiral case diameter of/h reaches about 2 meters, and it is high that mould is opened complex structure processed, Heavy Weight, cost, and one pair of mould is wanted tens0000 yuan.
Two, very important person's frock mould in the mold process, heat, the demoulding, complex process not only, the manufacture cycle is long, efficient is low; And to relate to large-scale pressurized equipment, warming-up device, plastic extrusion facility etc., the overall cost of manufacturing is very high.
Three, pump spiral case by compression molding, lining tissue tight degree is poor, the plastics crystal property is poor, poor product quality, reason is because the pump case inner-cavity structure is complicated, it is curved that multiple tracks will be turned in the deep that the plastics that are injected into enter pump case, therefore can cause the local plastic hydrodynamic pressure inadequate, and then cause plastic density inadequate, the lining quality is descended, especially when making the wear pump of wear-resisting demanding lining ultra-high molecular weight polyethylene (UHMWPE), the mold pressing Lining Technology is especially inadequate, quality impact on the pump lining is larger, because ultra-high molecular weight polyethylene, molten index is extremely low, material flowability is poor, this properties of materials causes the deep level mining pressure wretched insufficiency of pump case lining, and deep level mining pressure requires to be higher than more than the 13MPa, and actual only have 7～8MPa, again and then cause the lining crystallization poor, tissue looseness, bubble is many, wear-resisting property is poor, leakage point is many, has a strong impact on the quality of pump, haves much room for improvement.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, provide a kind of and used the large-scale lining that equipment is few, fabricating cost is low, quality of product is high to mould corrosion protection pump and preparation method thereof.
The present invention is for solving the problems of the technologies described above, following technological scheme is provided: a kind of large-scale lining is moulded corrosion protection pump, comprise the plastic lining layer on metal spiral case and the metal spiral case inwall, it is characterized in that described plastic lining layer is that prefabricated profiled some plastics templates welding forms, cast solidity body is connected the location between described metal spiral case and the plastic lining layer.
The effect of cast solidity body is, fixedly two aspects of anti-internal pressure of lining position and increase plastic lining layer.Because pump is when operation work, the pump internal pressure is up to 0.2 ~ 0.8MPa, if do not pour into a mould thermosetting resin between metal pump case and plastics lining, the pump liner can be subjected to burst damage after the interior pressure.
As a further improvement on the present invention, the outer circumferential face of described plastics template and the inner peripheral surface of metal spiral case are equipped with concaveconvex structure, and preferred concaveconvex structure is groove, raised line, piece point.Its benefit is the frictional resistance of the metal spiral case of plastic lining layer and pump, prevents that be heated rear deformed dilation of plastic lining layer from shrinking, and causes that local pressure increases, produce Local Cracking, and then the effect by above-mentioned solidity body, coupling is the position of plastic lining layer fixedly, makes plastic lining layer not produce displacement and cracking.
Preferred plastic lining layer is ultra-high molecular weight polyethylene and polyethylene, polypropylene, PVC＝polyvinyl chloride.
Described solidity body is resin, casting type rubber, polyurethane, monomer cast nylon, cement.
Preferred plastic plate thickness is 5 ~ 30mm, and further preferred plastic plate thickness is 15 ~ 25mm.
A kind of large-scale lining is moulded the corrosion protection pump preparation method, may further comprise the steps:
Cut some plastics templates according to the spiral case size;
The plastics template is put into electrically-controlled heating oven, heat to 180-220 ℃, constant temperature is 1～2 hour again, takes out after the plastics template is softening;
With shaper identical with the metal spiral case inner wall shape with softening plastics template brake forming, and in stock mould cooling and shaping;
Plastics template after the typing is welded into type, consists of plastic lining layer, and in location and the metal spiral case;
Cast solidity body between metal spiral case and plastic lining layer after the solidity body solidifies, can obtain lining and mould corrosion protection pump.
As a further improvement on the present invention, the solder joint place of described plastics template is provided with cut, and cut is 30 ° ~ 45 ° inclined-planes, and cut runs through the through thickness of plastics template, and then uses the welding rod welding with material, piles with whole weld seam with welding rod.
Beneficial effect of the present invention: the one, increase substantially the quality of product, magna pump spiral case with the present technique making, can overcome mould pressing process makes, numerous shortcomings such as the inside liner of pump lining spiral case is inadequate because of pressure, and the high molecule plastic poor fluidity causes plastics tissue looseness, bubble is many, leak source is many, not wear-resisting.Increase substantially lining and mould the quality of spiral case, and then the usage safety performance of large-scale plastic lined pump, life performance are increased substantially.The 2nd, the decrease manufacture cost owing to having adopted simple butt welding process, does not need large-scale pressure facility (1000T-2000T oil hydraulic press) and large-scale metal injection molded mould.And large heating plant, can make the plastic lined pump spiral case, manufacture cost can descend 60 ~ 70%.Three lay out the space for the manufacturing of domestic large-scale plastic lined pump, and the plastic lined pump of largest domestic bore is import latus rectum 600mm now, if make import greater than the plastic lined pump of 600mm, the method for moulding with the mold pressing lining is very difficult again.Also beyond example can be made the lining of larger model and be moulded wear pump of the present technique side now, can fill up domestic even international blank.The 4th, promoted the production safety performance, because original mould pressing process processing technique can only fill by hand and drive mould and heating, constructing under the pressurized conditions, molding pressure is wanted between 15 ~ 20MPa, therefore be easy to cause that pump housing shell bursts, injure the operator, very dangerous, present technique can be processed in the state without temperature, with no pressure, has significantly promoted the Safety performance in the production process.
Description of drawings
Fig. 1 is the old-fashioned steel lining plastic pump case of prior art plan view.
Fig. 2 is the middle sectional view of Fig. 1.
Fig. 3 is plan view of the present invention.
Fig. 4 is the middle sectional view of Fig. 3.
Fig. 5 is A partial enlarged view among Fig. 3.
Fig. 6 is B partial enlarged view among Fig. 4.
Embodiment
A kind of large-scale lining is moulded corrosion protection pump, comprise the plastic lining layer 002 on metal spiral case 001 and metal spiral case 001 inwall, it is characterized in that described plastic lining layer 002 is that prefabricated profiled some plastics templates 021 welding forms, cast solidity body 003 is connected the location between described metal spiral case 001 and the plastic lining layer 002, the inner peripheral surface of the outer circumferential face of described plastics template 021 and metal spiral case 001 is equipped with concaveconvex structure 004, and preferred concaveconvex structure 004 is groove, raised line, piece point.Preferred plastic lining layer 002 is ultra-high molecular weight polyethylene and polyethylene, polypropylene, PVC＝polyvinyl chloride, described solidity body 003 is resin, casting type rubber, polyurethane, monomer cast nylon, cement, preferred plastic plate 021 thickness is 5 ~ 30mm, and further preferred plastic plate 021 thickness is 15 ~ 25mm.
A kind of large-scale lining is moulded the corrosion protection pump preparation method, may further comprise the steps:
Cut some plastics templates according to the spiral case size;
The plastics template is put into electrically-controlled heating oven, heat to 180-220 ℃, constant temperature is 1～2 hour again, takes out after the plastics template is softening;
With shaper identical with the metal spiral case inner wall shape with softening plastics template brake forming, and in stock mould cooling and shaping;
Plastics template after the typing is welded into type, consists of plastic lining layer, and in location and the metal spiral case;
Cast solidity body between metal spiral case and plastic lining layer after the solidity body solidifies, can obtain lining and mould corrosion protection pump.
The solder joint place of described plastics template is provided with cut, and cut is 30 ° ~ 45 ° inclined-planes, and cut runs through the through thickness of plastics template, and then uses the welding rod welding with material, piles with whole weld seam with welding rod.
Above-mentioned is basic embodiment of the present invention, below introduces in detail two specific embodiments of the present invention.
Embodiment one
Shown in Fig. 3 ~ 6, at the prefabricated plastics template 021 of metal spiral case 001 interior splicing weldering lining, plastics template 021 shape can be according to metal spiral case 001 size and shape, and the radian curvature at each position is determined.The method of making is the plastics template 021 with required size, cut from high molecular weight polyethylene board material, put into again electrically-controlled heating oven, heat to 180-220 ℃, constant temperature is 1～2 hour again, after plastics template 021 is softening, take out, use again stock mould (metal and nonmetallic material make all can) with softening plastics template 021 brake forming, and cooling and shaping in stock mould again.
After 021 typing of plastics template, accomplish fluently cut at seam crossing again, cut is 30 ° ~ 45 ° inclined-planes, and cut runs through the through thickness of plastics template 021, and then uses the welding rod welding with material, piles with whole weld seam with welding rod and gets final product.
And then use orientation tool, integrally welded pump lining plastic layer, be positioned at the desired position, simultaneously between metal spiral case 001 and plastic lining layer, pour into a mould thermosetting resin, after thermosetting resin solidifies, by machining, after the assembly combination installations such as pump cover, impeller, main shaft, can obtain desirable lining and mould corrosion protection pump again.
The described plastic lining layer 002 of the present embodiment can be the weldability materials such as ultra-high molecular weight polyethylene (UHMWPE), polypropylene, polyethylene, PVC＝polyvinyl chloride.
The plastic lining layer 002 of metal spiral case described in the present embodiment, its plastic plate 021 can be chosen the plastic plate 021 of 5 ~ 30mm thickness according to the size of pump, preferably between 15 ~ 25mm thickness.
Embodiment two
According to embodiment one, choose the polypropylene plastics sheet material 021 of 15mm thickness, after cutting whole into sections, the moulding of heating, use fixed internal formwork, weld out the plastic lining layer of metal spiral case 001 shape of pump, the metal spiral case 001 of pump is made as cuts open in the front and back or the upper lower formula of cuing open again, mutually be sleeved on again the outside of plastic lining layer 002, after fastening, pour into a mould again solidity body location, can obtain equally lining and mould corrosion protection pump.
Above-described embodiment only is explanation technical conceive of the present invention and characteristics; its purpose is to allow the personage that is familiar with technique can understand content of the present invention and is implemented; can not limit protection scope of the present invention with this; all equivalences that Spirit Essence is done according to the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (9)
1. a large-scale lining is moulded corrosion protection pump, comprises the plastic lining layer on metal spiral case and the metal spiral case inwall, it is characterized in that described plastic lining layer is that prefabricated profiled some plastics templates welding forms, and cast solidity body is connected the location between described metal spiral case and the plastic lining layer.
2. a kind of large-scale lining according to claim 1 is moulded corrosion protection pump, it is characterized in that the outer circumferential face of described plastics template and the inner peripheral surface of metal spiral case are equipped with concaveconvex structure.
3. a kind of large-scale lining according to claim 2 is moulded corrosion protection pump, it is characterized in that concaveconvex structure is groove, raised line, piece point.
4. a kind of large-scale lining according to claim 1 is moulded corrosion protection pump, it is characterized in that plastic lining layer is ultra-high molecular weight polyethylene and polyethylene, polypropylene, PVC＝polyvinyl chloride.
5. a kind of large-scale lining according to claim 1 is moulded corrosion protection pump, it is characterized in that described solidity body is resin, casting type rubber, polyurethane, monomer cast nylon, cement.
6. a kind of large-scale lining according to claim 1 is moulded corrosion protection pump, it is characterized in that plastic plate thickness is 5 ~ 30mm.
7. a kind of large-scale lining according to claim 6 is moulded corrosion protection pump, it is characterized in that plastic plate thickness is 15 ~ 25mm.
8. each described a kind of large-scale lining is moulded the corrosion protection pump preparation method according to claim 1 ~ 7, may further comprise the steps:
Cut some plastics templates according to the spiral case size;
The plastics template is put into electrically-controlled heating oven, heat to 180-220 ℃, constant temperature is 1～2 hour again, takes out after the plastics template is softening;
With shaper identical with the metal spiral case inner wall shape with softening plastics template brake forming, and in stock mould cooling and shaping;
Plastics template after the typing is welded into type, consists of plastic lining layer, and in location and the metal spiral case;
Cast solidity body between metal spiral case and plastic lining layer after the solidity body solidifies, can obtain lining and mould corrosion protection pump.
9. a kind of large-scale lining according to claim 8 is moulded the corrosion protection pump preparation method, the solder joint place that it is characterized in that described plastics template is provided with cut, cut is 30 ° ~ 45 ° inclined-planes, cut runs through the through thickness of plastics template, and then use the welding rod with material to weld, pile with whole weld seam with welding rod.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012104028666A CN102913483A (en) | 2012-10-22 | 2012-10-22 | Large plastic-lining anticorrosion pump and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012104028666A CN102913483A (en) | 2012-10-22 | 2012-10-22 | Large plastic-lining anticorrosion pump and manufacturing method thereof |
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| CN102913483A true CN102913483A (en) | 2013-02-06 |
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| CN2012104028666A Withdrawn CN102913483A (en) | 2012-10-22 | 2012-10-22 | Large plastic-lining anticorrosion pump and manufacturing method thereof |
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Cited By (5)
| 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 |
| CN103671266A (en) * | 2013-11-21 | 2014-03-26 | 宜兴市宙斯泵业有限公司 | Large-scale plastic-lining desulfuration circulating pump and manufacturing method thereof |
| CN105064756A (en) * | 2015-08-18 | 2015-11-18 | 云南驰宏锌锗股份有限公司 | Anticorrosion method for improving anticorrosion effect and fixing rigid polyvinyl chloride plate through fusible interlining |
| CN106065876A (en) * | 2016-07-13 | 2016-11-02 | 广东工业大学 | A kind of worm frame with composite lining |
| CN109869348A (en) * | 2019-03-14 | 2019-06-11 | 江苏亚梅泵业集团有限公司 | A kind of large size fluoroplastics liner spiral case and preparation method thereof |
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| US4722664A (en) * | 1981-06-05 | 1988-02-02 | The Duriron Company, Inc. | Lined corrosion resistant pump |
| CN1321576A (en) * | 2001-05-25 | 2001-11-14 | 温万声 | Plastics-sticking internal container of refrigerator and its production process |
| CN2918817Y (en) * | 2006-07-07 | 2007-07-04 | 宜兴市宙斯泵业有限公司 | Antiwear body inlaid antiseptic centrifugal pump |
| CN102374199A (en) * | 2011-11-18 | 2012-03-14 | 宜兴市宙斯泵业有限公司 | Anticorrosive wear-resistant centrifugal pump volute casing |
| CN202914394U (en) * | 2012-10-22 | 2013-05-01 | 宜兴市宙斯泵业有限公司 | Large anti-corrosion pump lined with plastic |
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2012
- 2012-10-22 CN CN2012104028666A patent/CN102913483A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4722664A (en) * | 1981-06-05 | 1988-02-02 | The Duriron Company, Inc. | Lined corrosion resistant pump |
| CN1321576A (en) * | 2001-05-25 | 2001-11-14 | 温万声 | Plastics-sticking internal container of refrigerator and its production process |
| CN2918817Y (en) * | 2006-07-07 | 2007-07-04 | 宜兴市宙斯泵业有限公司 | Antiwear body inlaid antiseptic centrifugal pump |
| CN102374199A (en) * | 2011-11-18 | 2012-03-14 | 宜兴市宙斯泵业有限公司 | Anticorrosive wear-resistant centrifugal pump volute casing |
| CN202914394U (en) * | 2012-10-22 | 2013-05-01 | 宜兴市宙斯泵业有限公司 | Large anti-corrosion pump lined with plastic |
Cited By (6)
| 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 |
| CN103671266A (en) * | 2013-11-21 | 2014-03-26 | 宜兴市宙斯泵业有限公司 | Large-scale plastic-lining 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 |
| CN105064756A (en) * | 2015-08-18 | 2015-11-18 | 云南驰宏锌锗股份有限公司 | Anticorrosion method for improving anticorrosion effect and fixing rigid polyvinyl chloride plate through fusible interlining |
| CN106065876A (en) * | 2016-07-13 | 2016-11-02 | 广东工业大学 | A kind of worm frame with composite lining |
| CN109869348A (en) * | 2019-03-14 | 2019-06-11 | 江苏亚梅泵业集团有限公司 | A kind of large size fluoroplastics liner spiral case and preparation method thereof |
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Application publication date: 20130206 |