CN2199337Y - Steel-plastics composite mechanical sealed diluted acid pump - Google Patents
Steel-plastics composite mechanical sealed diluted acid pump Download PDFInfo
- Publication number
- CN2199337Y CN2199337Y CN 94243371 CN94243371U CN2199337Y CN 2199337 Y CN2199337 Y CN 2199337Y CN 94243371 CN94243371 CN 94243371 CN 94243371 U CN94243371 U CN 94243371U CN 2199337 Y CN2199337 Y CN 2199337Y
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- China
- Prior art keywords
- pump
- diluted acid
- impeller
- shaft
- assembled
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- Expired - Fee Related
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Abstract
The utility model relates to a steel-plastics composite mechanical seal diluted acid pump. The pump body of the pump and the inner surfaces of the flow passage components of a front and a back end caps are lined and provided with anticorrosive layers, and a blade wheel and a pump shaft are assembled to integration and are arranged in the inner chamber of the pump body. The structure of the pump is characterized in that the inner surfaces of the flow passage components are opened and milled with a plurality of dovetail grooves or inclined holes which are used for reinforcing the adhesive strength of the anticorrosive layers. The blade wheel is formed by that a pre-burying metallic frame and super molecule polyethylene are heated and pressed into integration. The pump shaft is provided with a drum-shaped sealing sleeve which forms self-regulating mechanical seal with a dynamic and a static seal rings. The pump integrates the advantages of the high rigidity and the high stability of a metal pump and the good corrosivity and the high abrasive resistance of a non metal pump into integration. The utility model which is suitable for being used under the ambient condition of dilute acid has the advantages of long service life, low cost, etc.
Description
The utility model relates to a kind of steel plastic compounding machine tool sealing diluted acid pump.
As everyone knows, acid-proof pump is one of common device of Chemical Manufacture.Not only require it to have anticorrosion antiwear for acid-proof pump, and will have good sealing property.For solving particularly diluted acid pump corrosion protection problem of acid-proof pump, conventional method is the anticorrosive coat of being made by pottery, plastics or anticorrosive paint at the attached one deck of metal pump housing liner, as the disclosed a kind of high temperature resistant acid etching pump of ZL93229528.2 utility model patent specification, be with the pump housing that the high-temperature acidic medium contacts in, the end face of pump cover, impeller, pump shaft surface anticorrosion with painting coating layer.This technological scheme has certain effect to solving pump housing corrosion, existing problem is as other acid-proof pump lined ceramics, plastics, i.e. poor adhesive force between the corrosion resistant layer and the pump housing, use a period of time after, the corrosion resistant layer just begins to produce the local shedding phenomenon, thereby has reduced acid-proof pump working life.Moreover, existing inside lining anti-corrosive layer acid-proof pump, owing to have kinetic friction between the pump housing and the pump shaft, pump shaft anticorrosive coat and shaft sealing thereof are are very easily worn and torn, and cause the pump housing poorly sealed.Because have solid particle in the acid medium, acid-proof pump damage in impeller phenomenon is also very serious.
The problems referred to above that the utility model exists at existing acid-proof pump structure, its purpose is to provide a kind of novel structure, and cost is low, the new shaped steel plastic compounding machine tool sealing diluted acid pump of long service life.
The utility model above-mentioned purpose realizes by following technology hand.
A kind of steel plastic compounding machine tool sealing diluted acid pump, the pump housing 2 of this pump and front cover 14 thereof, rear end cover 4 flow passage components internal surfaces are lined with one deck anticorrosive coat 3, impeller 15 is assembled into one with pump shaft 11, be arranged in the pump housing 2 inner chambers, the pump housing 2, front cover 14 and rear end cover 4 internal surfaces that it is characterized in that this pump are opened and are milled with dovetail groove or the inclined hole 1 that several are used to strengthen anticorrosive coat 3 adhesion.Above-mentioned anticorrosive coat material can adopt ultra high molecular polyethylene or high density polyethylene (HDPE), is attached to the pump housing and front and rear cover surface thereof through the heating and mould pressing lining.The above-mentioned pump housing and front and rear cover surface thereof are opened and are milled dovetail groove or inclined hole, help strengthening the combination force between anticorrosive coat and the metal shell, prevent that anticorrosive coat from coming off.Adopt abovementioned technology, solved existing acid-proof pump anticorrosive coat effectively and broken away from problem easily.
For solving the existing not wear-resisting problem of acid-proof pump impeller, the utility model improves blade wheel structure, this pump adopts built-in metal skeleton 12 and ultra high molecular polyethylene to make impeller 15 through heating and mould pressing, and rigidity cooperates and is assembled into one between the central shaft hole 19 of metal frame 12 and the pump shaft 11.Above-mentioned impeller stability is high, and anticorrosive anti-wear, to have solved the corrosion resistant performance that independent employing metallic impeller exists poor, the problem of not resistance to wearing; Also solved simultaneously the poor stability that the nonmetal impeller of independent employing exists, intensity is hanged down problem.For increasing the impeller bulk strength, metal frame and ultra high molecular polyethylene strong bonded are integral, above-mentioned metal frame 12 outwards launches to have radial flank 20 along its central shaft hole 19.The flank of above-mentioned metal frame outwards is the radiation curve-like to launch, and thickness dwindles gradually.
Easy to wear for solving existing acid-proof pump shaft seal, poorly sealed problem, the utility model has adopted a cover self-regualting type mechanical sealing mechanism, and this mechanism is made up of the stationary seal ring 18 that is installed in rotary packing ring 17 on the impeller 15, is assemblied in the drum type stuffing box gland 7 on the pump shaft 11 and is assembled into one with the sealing cover and match with rotary packing ring 17.Sealing mechanism utilizes pump housing fluid pressure to change, and acid medium is entered in the shaft seal chamber by the fluid bore on the rear end cover 6, flows out along rear end cover and static and dynamic sealing czermak space, and the equalizing orifice from impeller 15 flow back into the impeller inner chamber.The drum type stuffing box gland is flexible automatically vertically, adjusts between the dynamic and static seal ring to seal.For preventing the wearing and tearing of pump shaft axle sleeve, between this axle sleeve and the drum type stuffing box gland sheath is housed.
For keeping acid-proof pump to have higher working efficiency, the blade structure in the impeller housing preferably adopts three-dimensional twisted closed type structure.
The utility model collection metal pump good rigidly, stable height and nonmetal pump corrosivity are good, wear resistance is higher than one, adopt the metal shell internal surface to open and mill dovetail groove or inclined hole, increased combination force between inside lining anti-corrosive layer and the metal shell, improved acid-proof pump working life.The utility model adopts the self-regualting type mechanical sealing mechanism, has prolonged pump shaft working life, improves the acid-proof pump sealability.Adopt built-in metal skeleton and ultra high molecular polyethylene to make impeller, help improving impeller abrasion-proof and stability through heating and mould pressing.This pump project organization novelty has advantages such as corrosion-resistant long service life, price are low, working efficiency height, especially is fit to dilute sulfuric acid, watery hydrochloric acid and other reductive acid and contains acidity Jie's property of solid particle, and temperature is used under-20～100 ℃ of conditions.
Introduce the utility model detailed structure and specific embodiment thereof below in conjunction with accompanying drawing.
Fig. 1 is the utility model structure cut-away view.
Fig. 2 is the utility model impeller metal frame structure cut-away view.
Fig. 3 is the attached diagrammatic sketch of the utility model impeller metal frame structure.
1 dovetail groove or inclined hole among the figure, 2 pump housings, 3 anticorrosive coats, 4 rear end covers, 5 equalizing orifices, 6 liquid pores, 7 drum type stuffing box glands, 8 sheaths, 9 axle sleeves, 10 pump shaft keys, 11 pump shafts, 12 metal frames, 13 blades, 14 front covers, 15 impellers, 16 seal rings, 17 rotary packing rings, 18 stationary seal rings, 19 axis holes, 20 flanks.
In the present embodiment, the metal shell that comprises the pump housing 2, front cover 14, rear end cover 4 adopts ductile cast iron material to make, the pump housing 2 and end cap 4,14 internal surfaces leave and are milled with several dovetail grooves or inclined hole 1, adopt ultra high molecular polyethylene or high density polyethylene (HDPE) to add and be pressed into inside lining anti-corrosive layer 3 through heating, impeller 15 housings adopt ultra high molecular polyethylene and metal frame 12 heating and mould pressing that are embedded in this housing to make one, and the blade 13 of impeller is three-dimensional twisted closed type structure.Metal frame 12 central shaft holes 19 of impeller 15 are assembled into one with pump shaft 11 by axle key 10 rigidity, and pump shaft 11 outer surfaces are provided with corrosion-resistant axle sleeve 9, and drum type stuffing box gland 7 is assemblied in axle sleeve 9 outsides, is provided with sheath 8 between axle sleeve 9 and the stuffing box gland 7.Offer 6 equalizing orifices 5 on the impeller 15, be processed with fluid bore 6 on the rear end cover 4, drum type stuffing box gland 7 is formed the self-regualting type mechanical sealing mechanism with rotary packing ring 17 and stationary seal ring 18.Above-mentioned metal frame 12 is provided with flank 20.Seal ring 16 is assemblied in the shaft seal position.
Claims (6)
1, a kind of steel plastic compounding machine tool sealing diluted acid pump, the pump housing of this pump (2) and front cover (14) thereof, rear end cover (4) flow passage components internal surface are lined with one deck anticorrosive coat (3), impeller (15) is assembled into one with pump shaft (11), be arranged in the pump housing (2) inner chamber, the pump housing (2), front cover (14) and rear end cover (4) internal surface that it is characterized in that this pump are opened and are milled with dovetail groove or the inclined hole (1) that several are used to strengthen anticorrosive coat (3) adhesion.
2, diluted acid pump according to claim 1, it is characterized in that this pump adopts built-in metal skeleton (12) and ultra high molecular polyethylene to make impeller (15) through heating and mould pressing, rigidity cooperates and is assembled into one between the central shaft hole (19) of metal frame (12) and the pump shaft (11).
3, diluted acid pump according to claim 2 is characterized in that the metal frame (12) of said impeller (15) outwards launches to have radial flank (20) along its central shaft hole (19).
4, diluted acid pump according to claim 1, the self-regulated mechanical sealing mechanism that it is characterized in that this pump is made up of the stationary seal ring (18) that is assemblied in rotary packing ring (17) on the impeller (15), is assemblied in the drum type stuffing box gland (7) on the pump shaft (11) and is assembled into one with the sealing cover and match with rotary packing ring (17).
5, diluted acid pump according to claim 4 is characterized in that said pump shaft (11) outer surface is provided with corrosion-resistant axle sleeve (9), is equipped with sheath (8) between this axle sleeve (9) and the drum type stuffing box gland (7).
6,, it is characterized in that said impeller (15) housing intra vane (13) is three-dimensional twisted closed type structure according to claim 2 or 3 described diluted acid pumps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94243371 CN2199337Y (en) | 1994-10-10 | 1994-10-10 | Steel-plastics composite mechanical sealed diluted acid pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94243371 CN2199337Y (en) | 1994-10-10 | 1994-10-10 | Steel-plastics composite mechanical sealed diluted acid pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2199337Y true CN2199337Y (en) | 1995-05-31 |
Family
ID=33849742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94243371 Expired - Fee Related CN2199337Y (en) | 1994-10-10 | 1994-10-10 | Steel-plastics composite mechanical sealed diluted acid pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2199337Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101382140B (en) * | 2008-10-06 | 2010-06-09 | 潘述怀 | Wear-resistant corrosion-resistant pump |
| CN102145555A (en) * | 2011-03-22 | 2011-08-10 | 江苏武进液压启闭机有限公司 | Structure for improving bonding strength of belt groove substrate and coating |
| CN104676021A (en) * | 2015-01-16 | 2015-06-03 | 苏州东山防腐仪表阀门有限公司 | Valve component and split fluorine-lined plastic regulating valve |
| CN104676011A (en) * | 2015-01-16 | 2015-06-03 | 苏州东山防腐仪表阀门有限公司 | Integrated plastic adjusting valve with fluorine lining |
| CN104948469A (en) * | 2015-07-07 | 2015-09-30 | 芜湖环球汽车配件有限公司 | Wear resistant corrosion resisting centrifugal pump |
| CN109268306A (en) * | 2018-11-09 | 2019-01-25 | 合肥工业大学 | A kind of combined type impeller rotor |
| CN109386497A (en) * | 2018-11-09 | 2019-02-26 | 合肥工业大学 | A kind of desulfurization pump containing combined type impeller rotor |
| CN111472995A (en) * | 2020-04-16 | 2020-07-31 | 襄阳五二五泵业有限公司 | Manufacturing method of silicon carbide ceramic lining metal pump cover |
| CN113482968A (en) * | 2021-07-13 | 2021-10-08 | 江苏大学 | Impeller of lightweight design |
-
1994
- 1994-10-10 CN CN 94243371 patent/CN2199337Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101382140B (en) * | 2008-10-06 | 2010-06-09 | 潘述怀 | Wear-resistant corrosion-resistant pump |
| CN102145555A (en) * | 2011-03-22 | 2011-08-10 | 江苏武进液压启闭机有限公司 | Structure for improving bonding strength of belt groove substrate and coating |
| CN104676021A (en) * | 2015-01-16 | 2015-06-03 | 苏州东山防腐仪表阀门有限公司 | Valve component and split fluorine-lined plastic regulating valve |
| CN104676011A (en) * | 2015-01-16 | 2015-06-03 | 苏州东山防腐仪表阀门有限公司 | Integrated plastic adjusting valve with fluorine lining |
| CN104948469A (en) * | 2015-07-07 | 2015-09-30 | 芜湖环球汽车配件有限公司 | Wear resistant corrosion resisting centrifugal pump |
| CN109268306A (en) * | 2018-11-09 | 2019-01-25 | 合肥工业大学 | A kind of combined type impeller rotor |
| CN109386497A (en) * | 2018-11-09 | 2019-02-26 | 合肥工业大学 | A kind of desulfurization pump containing combined type impeller rotor |
| CN111472995A (en) * | 2020-04-16 | 2020-07-31 | 襄阳五二五泵业有限公司 | Manufacturing method of silicon carbide ceramic lining metal pump cover |
| CN113482968A (en) * | 2021-07-13 | 2021-10-08 | 江苏大学 | Impeller of lightweight design |
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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 |