CN1078316C - Wear-resisting anticorrosive efficient pump - Google Patents
Wear-resisting anticorrosive efficient pump Download PDFInfo
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- CN1078316C CN1078316C CN97105267A CN97105267A CN1078316C CN 1078316 C CN1078316 C CN 1078316C CN 97105267 A CN97105267 A CN 97105267A CN 97105267 A CN97105267 A CN 97105267A CN 1078316 C CN1078316 C CN 1078316C
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- pump
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- 239000000463 material Substances 0.000 claims abstract description 14
- 239000000843 powder Substances 0.000 claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 6
- 239000007822 coupling agent Substances 0.000 claims abstract description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 5
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229920006334 epoxy coating Polymers 0.000 claims abstract description 4
- 229910052882 wollastonite Inorganic materials 0.000 claims abstract description 4
- 239000010456 wollastonite Substances 0.000 claims abstract description 4
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 3
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 3
- 239000003822 epoxy resin Substances 0.000 claims abstract description 3
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 3
- SRPWOOOHEPICQU-UHFFFAOYSA-N trimellitic anhydride Chemical compound OC(=O)C1=CC=C2C(=O)OC(=O)C2=C1 SRPWOOOHEPICQU-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000000576 coating method Methods 0.000 claims description 13
- 239000011248 coating agent Substances 0.000 claims description 12
- -1 diamantin Substances 0.000 claims description 9
- 238000003723 Smelting Methods 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical class [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims description 3
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical group CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229920001568 phenolic resin Polymers 0.000 claims description 2
- 239000005011 phenolic resin Substances 0.000 claims description 2
- APSBXTVYXVQYAB-UHFFFAOYSA-M sodium docusate Chemical group [Na+].CCCCC(CC)COC(=O)CC(S([O-])(=O)=O)C(=O)OCC(CC)CCCC APSBXTVYXVQYAB-UHFFFAOYSA-M 0.000 claims description 2
- 239000004408 titanium dioxide Substances 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 6
- 238000005299 abrasion Methods 0.000 abstract description 3
- QEDIHJRFNPUALG-UHFFFAOYSA-N [Pb].C(CCCCCCCCCCCCCCCCC)(=O)N Chemical compound [Pb].C(CCCCCCCCCCCCCCCCC)(=O)N QEDIHJRFNPUALG-UHFFFAOYSA-N 0.000 abstract 1
- 229910001651 emery Inorganic materials 0.000 abstract 1
- ANSXAPJVJOKRDJ-UHFFFAOYSA-N furo[3,4-f][2]benzofuran-1,3,5,7-tetrone Chemical compound C1=C2C(=O)OC(=O)C2=CC2=C1C(=O)OC2=O ANSXAPJVJOKRDJ-UHFFFAOYSA-N 0.000 abstract 1
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 abstract 1
- 235000010215 titanium dioxide Nutrition 0.000 abstract 1
- VXUYXOFXAQZZMF-UHFFFAOYSA-N titanium(IV) isopropoxide Chemical compound CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C VXUYXOFXAQZZMF-UHFFFAOYSA-N 0.000 abstract 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 abstract 1
- 229920002554 vinyl polymer Polymers 0.000 abstract 1
- 238000005507 spraying Methods 0.000 description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 238000012360 testing method Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 10
- 230000008859 change Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 3
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000008199 coating composition Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000003260 anti-sepsis Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- MASNVFNHVJIXLL-UHFFFAOYSA-N ethenyl(ethoxy)silicon Chemical compound CCO[Si]C=C MASNVFNHVJIXLL-UHFFFAOYSA-N 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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Abstract
The present invention relates to an abrasion and corrosion resistant pump with high efficiency, which is characterized in that a layer of fused junction epoxy coating material is attached to the surface of a flow passage component in an original pump structure, and comprises the main components of 25 wt% to 40 wt% of E-12 type epoxy resin, 0.1 wt% to 2 wt% of curing agent, 0.1 wt% of 0.5 wt parts of coupling agent and adding material as the rest, wherein the adding material is selected from one kind or several kinds of titanium white powder, emery powder, wollastonite powder and ore black powder; the curing agent is selected from one of dicyanodiamide, pyromellitic acid anhydride as a perylene derivative of the dicyanodiamide, trimellitic anhydride and acrylic resin; the coupling agent is selected from vinyl triethoxysilicane, isopropyltriiso stearamide lead titanate and tri(dicapryl pyro acyloxy) isopropyl titanate. The present invention has good abrasion and corrosion resistance so as to have long service life and simultaneously improve the use efficiency of the pump.
Description
The present invention relates to the transmission of liquid medium, a kind of wear-resisting anticorrosive efficient water pump is provided especially.
Water pump is of a great variety, and applied environment is extensive, industry and civilian in play an important role.Substantially adopt two types material at present on water pump is made, a kind of is nonmetallic material such as glass fibre reinforced plastics etc.; Another kind is metallic material such as cast iron, stainless steel, titanium etc.It is more that the general majority of nonmetallic material pump is used for chemical medium, and be limited to the low-flow high-lift working environment; Metallic material pump application area is very extensive, but also exists many use shortcomings, as not wear-resistant, not corrosion-resistant, problems such as runner is coarse, pump efficiency weak point in low working life, cost, maintenance inconvenience.At all deficiencys that metal pump exists, generally the solution of Cai Yonging has following several: 1. adopt titanium material or precious metal material to make anti-corrosive pump.This method can solve certain problem, but expensive on cost, the general user does not bear, and the waste material resource.2. employing chemical nickel plating on surface--phosphorus protective coating.Pump after this method is handled is more much better than naked pump, but can not tackle the problem at its root because of coating is thin, porosity ratio is high.3. the glass fibre reinforced plastics processing method is carried out on the surface.Glass fibre reinforced plastics uses better in certain medium that is suitable for, but on construction process difficulty carry out.Since the pump structure complexity, the more hidden danger that just has cracking of seam during processing.Thickness easily produces inhomogeneous, influences the dynamic balancing of pump.This method will be used Bond, the low easy delamination of adhesion.Above problem finally can just influence working life, and is very undesirable in practical application.4. surperficial bonding hard dusty material method.Main binding material such as diamond, molybdenum, zirconium etc.This method difficulty of construction is big, and adhesion is low, the surface roughness height, and the porosity ratio height, weight increases big, and the life-span improves limited, and the force part is destroyed soon on runner.5. surperficial sticking rubber protection.This method difficulty of construction is big, and adhesion is low, and the slit joint is many, and is easily aging thereby adopt very few in actual applications.Above method can solve the certain problem in the practical application really, but also exists a lot of masty deficiencys, affects the effect in working life.
The object of the present invention is to provide a kind of novel water pump, it has advantages of good abrasion concurrently, corrosion resistance, thereby arranged long working life, can improve the utilization efficiency of pump simultaneously again.
The invention provides a kind of wear-resisting anticorrosive efficient pump, it is characterized in that: at flow passage components surface attachment one deck smelting combined epoxy coating of former pump structure, the composition of coating mainly comprises (weight percentage):
E-12 type epoxy resin 25～40 curing agent 0.1～2
It is wherein surplus that coupling agent 0.1～0.5 adds material, adds material and be selected from one or more of titanium dioxide, diamantin, wollastonite in powder, ore black powder; Curing agent is selected from a kind of of dicyandiamide and derivative PMA acid anhydride thereof, trimellitic anhydride, acrylic resin; Coupling agent is selected from VTES, isopropyl three hard different fatty acyl group titanate esters, three (dioctyl pyrophosphoryl oxygen base) metatitanic acid isopropyl ester; Also can add 5～30 phenolic resin.The smelting combined epoxy powder coating, be a kind of novel industrial antisepsis coating, ability with the anti-various dielectric corrosions of good normal temperature, with the metallic material combination force strong and can carry out car, dig, mill, various machinings such as mill, brill, self-lubricating property is good, and the water pump that is used for existing structure has following advantage:
1. on performance index.Physical and mechanical properties index height, adhesive strength) 80MPa, shear strength 43MPa, impact strength) 18J, pressure/draw intensity 90～100MPa.Chemical-resistance is good, as acid-and base-resisting, salt, wet goods.Comprehensive resistance to chemical corrosion is better than coating commonly used, and physical property is than generally using high many of coating index always.So can increase substantially working life in actual applications, as just improving more than five times on the draining pump.
2. the degree of finish of runner improves after application, and transport resistance is reduced, and has increased flow.Bring up to 494 tons as on 500 tons/hour submersible pump, making flow from 488 tons.
3. pump efficiency improves, and can reach 2.5～3.2%.
4. the air horsepower of pump reduces, and greatly reduces energy consumption, has reduced user cost.
5. coating thickness is thin, and is in light weight, to not influence of pump dynamic balancing, just need not handle after the application and can directly use.
6. construction process is convenient, and coating thickness can require and handle according to actual, and coating is as a whole, does not have this shortcoming of seam, thereby is difficult for being taken off layer in certain and produces and destroy.
7. other also have characteristics such as machining, field repair.
Below by embodiment in detail the present invention is described in detail.
Accompanying drawing 1 is a performance curve before the spraying of 250QJ (R) 230/3 submersible pump.
Accompanying drawing 2 is 250QJ (R) 230/3 a submersible pump impeller spraying back performance curve.
Accompanying drawing 3 all sprays the back performance curve for 250QJ (R) 230/3 submersible pump mesochite impeller.
Accompanying drawing 4 is the preceding performance curve of 400QJ500-30/2 submersible pump spraying.
Accompanying drawing 5 is 400QJ500-30/2 submersible pump impeller spraying back performance curve.
By following step water pump is carried out application:
--will treat that the application parts deoil, sandblast scrubbing rust cleaning;
--parts are preheating to 230～250 ℃;
--applying coatings to thickness is 0.1～3mm;
--solidified 0.5～2 hour down at 220～240 ℃;
--mechanical prosthesis is to the size that requires.
The coating composition:
Epoxy E-12 60 PMA acid anhydrides 1
Vinyl Ethoxysilane 0.3 wollastonite surplus
Be used for submersible pump, test result is as follows:
One, experimental prototype:
1.250QJ (R) 230/3+YQS2-250/55; (necessary electromotor power 55KW)
2.400QJ 500/2+YQS (V) 300-63/4; (necessary electromotor power 63KW)
Two, test method:
This test takes the method for comparative trial to carry out.Promptly water pump vane, the mesochite to same model machine spraying front and back, carries out the pump performance test respectively, to compare its performance variation situation.
Specific practice:
(1) 1. when not spraying, 250QJZ (R) 230/3 water pump is carried out testing property.
2. behind single spray impeller overcurrent position, water pump is carried out testing property, to compare changes of properties.
3. the overcurrent position of mesochite is also sprayed, the test water pump performance is to understand and water pump relatively again
The situation of change of energy.
(2) 1. when not spraying, 400QJ 500/2 water pump is carried out testing property.
2. again water pump is carried out testing property behind the spraying impeller overcurrent position, with the relatively variation of pump performance
Situation.
Three, test result: (being coated with organic coating thickness is 0.3～0.4mm)
(1) 250QJ (R) 230/3 testing water pump result
1. performance curve (seeing accompanying drawing 1) before spraying
2. performance curve (seeing accompanying drawing 2) behind the spraying impeller
3. impeller, mesochite all spray back performance curve (seeing accompanying drawing 3)
4. performance comparison table:
(2) 2. 3. performance comparison table of impeller spraying back characteristic curve of pump (seeing accompanying drawing 5) of performance curve (seeing accompanying drawing 4) before 400QJ 500-30/2 testing water pump result 1. spraying:
| The project data state | Flow (m 3/h) | Lift (m) | Efficient (%) | Air horsepower (KW) |
| Before the spraying | 226.8 | ?60.67 | ?74.93 | ?50.02 |
| After the impeller spraying | 226.79 | ?60.64 | ?77.42 | ?46.36 |
| After the spraying of mesochite impeller | 227.97 | ?60.96 | ?78.01 | ?46.51 |
| The project data state | Flow (m 3/H) | Lift (m) | Efficient (%) | Air horsepower (KW) |
| Before the spraying | 486.24 | ?29.29 | ?78.1 | ?49.67 |
| After the impeller spraying | 495.25 | ?29.72 | ?81.13 | ?49.4 |
Four, test result analysis:
1. as can be seen from the test results, behind 250QJ (R) 230/3 spraying impeller overcurrent position, the flow of pump and lift change little, and air horsepower decline 3.36KW (account for rated power 6.65%), efficient improves 2.49%; And spraying mesochite and impeller during with spraying impeller separately pump performance change little, just slightly improvement.
2. the situation of change of pump performance sees that the variation of lift and air horsepower is little before and after 400QJ 500-30/2 impeller being sprayed, and flow increases 9.01m
3/ H, efficient improves 3.03%.
3. behind the spray coating powder paint of impeller overcurrent position, the smooth degree of runner obviously improves, and when fluid was passed through, resistance reduced; And reduced the possibility that produces turbulent flow.But the factor that influences pump performance is a lot, therefore to different pumps, reflects every Effect on Performance degree also different.But be reflected in overall target of pump performance--in the influence of pump efficiency, but be consistent.The present invention is to different pumps, and pump efficiency all has raising by a relatively large margin.
Embodiment 2
The coating composition is:
Epoxy E-12 50 dicyandiamides 2
Isopropyl tri titanate 0.2 quartz flour is surplus
Adopt embodiment's 1 identical technology that draining pump integral body is carried out application, be used for briny environment, the more naked pump life-span improves more than 15 times.
Claims (3)
1. wear-resisting anticorrosive efficient pump, it is characterized in that: at flow passage components surface attachment one deck smelting combined epoxy coating of former pump structure, the composition of coating mainly comprises (weight percentage):
E-12 type epoxy resin 25～40 curing agent 0.1～2
It is wherein surplus that coupling agent 0.1～0.5 adds material, adds material and be selected from one or more of titanium dioxide, diamantin, wollastonite in powder, ore black powder; Curing agent is selected from a kind of of dicyandiamide and derivative PMA acid anhydride thereof, trimellitic anhydride, acrylic resin; Coupling agent is selected from VTES, isopropyl three isostearoyl base titanate esters, three (dioctyl pyrophosphoryl oxygen base) metatitanic acid isopropyl ester.
2. according to the described wear-resisting anticorrosive efficient pump of claim 1, it is characterized in that: also can add 5～30 phenolic resin in the coating.
3. according to claim 1,2 described wear-resisting anticorrosive efficient pumps is characterized in that: pump structure integral body is coated with smelting combined epoxy coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97105267A CN1078316C (en) | 1997-07-18 | 1997-07-18 | Wear-resisting anticorrosive efficient pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97105267A CN1078316C (en) | 1997-07-18 | 1997-07-18 | Wear-resisting anticorrosive efficient pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1206074A CN1206074A (en) | 1999-01-27 |
| CN1078316C true CN1078316C (en) | 2002-01-23 |
Family
ID=5167798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97105267A Expired - Fee Related CN1078316C (en) | 1997-07-18 | 1997-07-18 | Wear-resisting anticorrosive efficient pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1078316C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100353059C (en) * | 2003-04-14 | 2007-12-05 | 株式会社丰田自动织机 | Compressor |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101469746A (en) * | 2007-12-28 | 2009-07-01 | 中国第一汽车集团公司 | Clutch booster pump cylinder inner wall coating |
| CN101787983A (en) * | 2010-03-12 | 2010-07-28 | 肖琼 | Wear-resistant impeller of vane-type pump |
| CN101782073A (en) * | 2010-03-16 | 2010-07-21 | 肖琼 | Vertical-type wear resistant submerged pump |
| CN102852846B (en) * | 2012-08-22 | 2016-03-16 | 广东省佛山水泵厂有限公司 | A kind of sea water pump of anti-marine organism corrsion |
| CN105419246A (en) * | 2016-01-18 | 2016-03-23 | 苏州法斯特信息科技有限公司 | Preparation method of high-wear-resistance plastic mold material for ceramic forming |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH451711A (en) * | 1964-07-14 | 1968-05-15 | Emile Egger & Cie S A | Multipurpose pump unit |
| US5316449A (en) * | 1991-11-14 | 1994-05-31 | N.V. Baggerwerken Decloedt & Zoon | Motor-driven pump with reaction turbine |
| FR2724695A1 (en) * | 1994-09-16 | 1996-03-22 | Ksb Ag | CENTRIFUGAL PUMP WITH INPUT RING |
-
1997
- 1997-07-18 CN CN97105267A patent/CN1078316C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH451711A (en) * | 1964-07-14 | 1968-05-15 | Emile Egger & Cie S A | Multipurpose pump unit |
| US5316449A (en) * | 1991-11-14 | 1994-05-31 | N.V. Baggerwerken Decloedt & Zoon | Motor-driven pump with reaction turbine |
| FR2724695A1 (en) * | 1994-09-16 | 1996-03-22 | Ksb Ag | CENTRIFUGAL PUMP WITH INPUT RING |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100353059C (en) * | 2003-04-14 | 2007-12-05 | 株式会社丰田自动织机 | Compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1206074A (en) | 1999-01-27 |
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