CN100523512C - Energy-saving high-efficiency centrifugal pump with strong corrosion resistant - Google Patents
Energy-saving high-efficiency centrifugal pump with strong corrosion resistant Download PDFInfo
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- CN100523512C CN100523512C CNB031440991A CN03144099A CN100523512C CN 100523512 C CN100523512 C CN 100523512C CN B031440991 A CNB031440991 A CN B031440991A CN 03144099 A CN03144099 A CN 03144099A CN 100523512 C CN100523512 C CN 100523512C
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- impeller
- centrifugal pump
- saving high
- pump housing
- power saving
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Abstract
An energy-saving efficient centrifugal pump resisting strong corrosion features that its main body composed of pump body, blade wheel and cover is made of polytetrafluoroethylene resin and a reinforcing external metal casing is used for improving its mechanical strength. Its advantages are high efficiency and sealing performance, and high resistance to high temp, low temp and strong corrosion.
Description
Technical field
The present invention relates to a kind of corrosion resisting centrifugal pump, especially relate to a kind of power saving high efficient centrifugal pump of being able to bear strong corrosion that the pump housing and dependency structure thereof have been improved.
Background technique
At present, the anti-corrosive pump that generally uses in the industries such as chemical industry, metallurgy, papermaking, medicine adopts resistant material to make lining mostly both at home and abroad, as pottery, stainless steel, engineering plastics etc., such structure often exists that efficient is low, energy consumption is high, the life-span is short or it is unreliable to seal, leakage pollution is serious and be able to bear strong corrosion, defective such as high and low temperature resistance difference.
Everybody knows that also the decay resistance of polyflon is very superior, but because it is difficult to processing, and its mechanical strength is lower, has restricted the development and the application of this anti-corrosive pump to a great extent.Present also someone did exploration to a certain degree, and (patent No.: 96223881.3), it is by pump case, pump cover, impeller, support, compositions such as motor such as patent " corrosion resisting centrifugal pump ".Be provided with the fluoroplastic liner in pump case, the pump cover, inwall is provided with axially and radially is 60 ° groove, to increase fluoroplastic liner adhesion.
But this class formation does not also give full play of the superior function of polyflon, and it is very unreasonable to exist blade structure, the dynamic balance performance of the pump housing is relatively poor, and the pressure of mechanical seal is bigger, and whole dismounting, maintenance are more loaded down with trivial details, the processing technology complexity, deficiency such as working life is short.
Summary of the invention
The present invention mainly is that decay resistance is undesirable under solution existing in prior technology decay resistance, the especially high-temperature condition, and the pressure of mechanical seal is bigger, the frequent technical problem that waits of part replacement.
It is very unreasonable that the present invention has also solved the existing in prior technology blade structure, inefficiency, the high technical problem of energy consumption.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals: comprise the pump housing and assembling impeller within it, impeller is arranged on an end of transmission shaft, and the described pump housing is to adopt polyflon to make, its outer reinforcement pump case that is provided with.Strengthen pump case and adopt metal to make, in order to strengthen the mechanical strength of the pump housing, the described pump housing also can adopt modified polytetrafluoroethylresin resin to make, its integral die sinter molding.
As preferably, described impeller also adopts polyflon to make; Impeller one side is provided with primary blades, is 5-50mm by its sprue degree of depth that forms; The impeller opposite side is provided with back blades, is 1-5mm by its secondary channels degree of depth that forms; Described primary blades and back blades are symmetrical arranged.Blade and impeller integral production, its runner bottom smooth transition can prevent that fed sheet of a media is deposited on root of blade in the high speed rotating process, and can increase the mechanical strength of blade; Being provided with of back blades can improve whole dynamic balance performance, also reduced the pressure of mechanical seal.
As preferably, the port of the described pump housing is provided with lid, and described lid system adopts polyflon to make, its outer reinforcement pump cover that is provided with.Strengthen pump cover and adopt metal to make, in order to strengthen the mechanical strength of lid.
As preferably, the passage curve of described blade is to be connected by plurality of sections reducing circular arc and tangent line thereof to form; The center of described primary blades is provided with mastoid process.Wherein, passage curve can be calculated by fluid mechanics, improves the acceleration of pump inner fluid when moving in a circle state to greatest extent, thereby cuts down the consumption of energy; Mastoid process can be stablized impeller during pump startup, reduces in the high speed rotating process fed sheet of a media to the axial dipole field active force of impeller, and highly pressurised liquid is diverted in each runner.
As preferably, the axial angle in the outside is about 3-15 ° in the described blade, and the number of described blade is generally 2-8.The number of blade can be selected design according to liquid medium and Environmental Conditions, with its performance of best performance.
As preferably, the outlet port of described pump housing inside is provided with cut water, and its end is roughly concordant with the center line of described outlet, and shrinks gradually along the liquid flow path direction, and its length is generally approximate circumference.The liquid stream of the high-voltage high-speed that is thrown away by primary blades flows to the cut water place, changes direction under the stopping of cut water, converges outlet and discharges.
As preferably, the center of described back blades is provided with attachment hole, is provided with nut in it, and described transmission shaft is connected with described impeller by nut, and is provided with separation sleeve in the pump housing and near the transmission shaft outside of the pump housing.
Characteristics such as therefore, it is well-balanced that the present invention has structure, rationally distributed, has excellent corrosion resisting performance and mechanical property, and working efficiency improves 10～20% than pump of the same type, shock-resistant, that wear-resisting property is better, is difficult for wearing out, and overall performance is stable, and working life is long.
Can be widely used in industries such as chemical industry, oil, metallurgy, pharmacy, papermaking, military project, machine-building, printing and dyeing, environmental protection, desalination of sea water.
Description of drawings
Fig. 1 is a kind of assembly structure schematic representation of the present invention;
Fig. 2 is a kind of main TV structure schematic representation of impeller of the present invention;
Fig. 3 is the A-A sectional structure schematic representation of Fig. 2;
Fig. 4 is a kind of backsight structural representation of impeller of the present invention;
Fig. 5 is a kind of structural representation of the pump housing of the present invention.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, technological scheme of the present invention is described in further detail.
Embodiment: a kind of power saving high efficient centrifugal pump of being able to bear strong corrosion, its structure comprises the pump housing 2, is provided with impeller 3 in the pump housing 2, and pump housing port is provided with lid 4, and the outside of the pump housing 2 and lid 4 is respectively equipped with to be strengthened pump case 1 and strengthens pump cover 11.
Wherein, the pump housing, impeller and lid form with compression molding method once-through sintering by polyflon, can save the polyflon material, pressure during its pressing mold, compression ratio and pressing speed depend on factors such as impeller diameter, blade shape and passage curve, and the sintering processing temperature is generally between 360～380.Be provided with impeller 3 in the chamber of the pump housing 2, its bilateral symmetry is provided with primary blades 31 and back blades 32, by its sprue degree of depth that forms is that 5-50mm secondary channels degree of depth is 1-5mm, blade and impeller integral production, its runner bottom smooth transition, can prevent that fed sheet of a media is deposited on root of blade in the high speed rotating process, back blades 32 can improve whole dynamic balance performance, has also reduced the pressure of mechanical seal.The axial angle in the outside is about 3-15 ° in the blade, and the number of described blade is generally 2-8, and the number of blade can be selected design according to liquid medium and Environmental Conditions, with its performance of best performance.The passage curve of blade is to be connected by plurality of sections reducing circular arc and tangent line thereof to form, and passage curve can be calculated by fluid mechanics, improves the acceleration of pump inner fluid when moving in a circle state to greatest extent, thereby cuts down the consumption of energy; The center of primary blades 31 is provided with mastoid process 33, during assembling, mastoid process 33 is over against import 23, both center line unanimities, mastoid process 33 can be stablized impeller 3 during pump startup, reduce in the high speed rotating process fed sheet of a media to the axial dipole field active force of impeller 3, and highly pressurised liquid is diverted in each runner.The center of back blades 32 is provided with attachment hole 34, is provided with nut 35 in it, makes impeller sets be contained in the end of transmission shaft 14 by nut, and in the pump housing 2 and transmission shaft 14 outsides of the close pump housing are provided with separation sleeve 13.The thickness of the pump housing 2 and lid 4 is respectively 5-80mm and 8-20mm.The pump housing 2 is provided with import 23 and outlet 21,21 places are provided with scroll casing type cut water 22 in outlet, its end is roughly concordant with the center line of described outlet 21, and shrink gradually along the liquid flow path direction, the liquid stream of the high-voltage high-speed that is thrown away by primary blades 31 flows to cut water 22 places, under the stopping of cut water, change direction, converge outlet 21 and discharge.
Strengthen pump case 1 and all adopt metal to make with reinforcement pump cover 11, such as cast iron or steel etc., in order to strengthen the mechanical strength of the pump housing 2 and lid 4, under the prerequisite that guarantees overall mechanical strength and rigidity, compressible manufacture cost.Strengthen pump case 1 and be fixed on the outside of the pump housing, both compact configuration by piping flange.
During assembling, impeller 3 in the pump housing 2 is fixed in an end of transmission shaft 14, and the port of the pump housing 2 is provided with lid 4, will strengthen the outside that pump case 1 is fixed on the pump housing 2 by piping flange, both compact configuration will be strengthened pump cover 11 and lid 4 by some screws and be fixed in the lump and strengthen on the pump case 1.The separation sleeve 13 of lid 4 outside transmission shafts 14 is provided with snap ring 5 and blind nut 6, and both phase configuration are with the axis hole sealing of lid 4.Strengthen pump cover 11 and be provided with cooling jacket 7, the parts of heating during in order to the cooling running.All the other are all assembled with the mechanical fit of routine.
Contribution of the present invention is to provide a kind of and is made into integral pump by polyflon and comprises the pump housing, impeller and lid, and its outside installs metal again additional strengthens housing, improving the mechanical strength of integral pump, thereby has excellent corrosion resisting performance and mechanical property.The setting rational in infrastructure of primary blades and back blades on the impeller, can be so that its working efficiency improves 10-20% than pump of the same type, integral sealing is reliable, maintenance is convenient, high and low temperature resistance is good, its high low temperature resistance range is-195～250, and can anti-three acid, strong corrosive medium such as two alkali, saline solution, strong oxidizer, organic solvent.
Claims (6)
1. a heavy corrosion-resistant power saving high efficient centrifugal pump comprises the pump housing (2) and assembling impeller (3) within it, and impeller (3) is arranged on an end of transmission shaft (14); The port of the described pump housing (2) is provided with lid (4), and described lid (4) is to adopt polyflon to make, and its outer being provided with is strengthened pump cover (11); The described pump housing (2) is to adopt polyflon to make, and its outer being provided with is strengthened pump case (1); It is characterized in that: the inner outlet (21) of the described pump housing (2) locates to be provided with the cut water (22) and the runner of contraction gradually; The center of impeller (3) is provided with mastoid process (33), the import (23) of mastoid process (33) on the pump housing (2).
2. heavy corrosion-resistant power saving high efficient centrifugal pump according to claim 1 is characterized in that described cut water (22) end is roughly concordant with the center line of described outlet (21), and shrinks gradually along the liquid flow path direction.
3. heavy corrosion-resistant power saving high efficient centrifugal pump according to claim 1 is characterized in that described impeller (3) one sides are provided with primary blades (31), and impeller (3) opposite side is provided with back blades (32); Described primary blades (31) is symmetrical arranged with back blades (32).
4. heavy corrosion-resistant power saving high efficient centrifugal pump according to claim 3 is characterized in that the sprue degree of depth that described primary blades (31) forms is 5-50mm; The secondary channels degree of depth that described back blades (32) forms is 1-5mm.
5. heavy corrosion-resistant power saving high efficient centrifugal pump according to claim 3, the passage curve that it is characterized in that described blade are to be connected by plurality of sections reducing circular arc and tangent line thereof to form.
6. heavy corrosion-resistant power saving high efficient centrifugal pump according to claim 3 is characterized in that the axial angle in the outside in the described blade is 3-15 °, and the number of described blade is generally 2-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031440991A CN100523512C (en) | 2003-08-05 | 2003-08-05 | Energy-saving high-efficiency centrifugal pump with strong corrosion resistant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031440991A CN100523512C (en) | 2003-08-05 | 2003-08-05 | Energy-saving high-efficiency centrifugal pump with strong corrosion resistant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1538074A CN1538074A (en) | 2004-10-20 |
| CN100523512C true CN100523512C (en) | 2009-08-05 |
Family
ID=34324061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031440991A Expired - Fee Related CN100523512C (en) | 2003-08-05 | 2003-08-05 | Energy-saving high-efficiency centrifugal pump with strong corrosion resistant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100523512C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006316678A (en) * | 2005-05-11 | 2006-11-24 | Nidec Shibaura Corp | Pump |
| CN102808807A (en) * | 2011-05-31 | 2012-12-05 | 安徽凯特泵业有限公司 | Pump |
| CN107246409B (en) * | 2017-08-11 | 2023-04-28 | 安特洛(福安市)电机有限公司 | Water pump |
-
2003
- 2003-08-05 CN CNB031440991A patent/CN100523512C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1538074A (en) | 2004-10-20 |
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Granted publication date: 20090805 Termination date: 20150805 |
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