CN2764967Y - Eddy flow centrifugal constant pressure pump - Google Patents
Eddy flow centrifugal constant pressure pump Download PDFInfo
- Publication number
- CN2764967Y CN2764967Y CNU2005200015465U CN200520001546U CN2764967Y CN 2764967 Y CN2764967 Y CN 2764967Y CN U2005200015465 U CNU2005200015465 U CN U2005200015465U CN 200520001546 U CN200520001546 U CN 200520001546U CN 2764967 Y CN2764967 Y CN 2764967Y
- Authority
- CN
- China
- Prior art keywords
- pump
- impeller
- outlet
- utility
- model
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2238—Special flow patterns
- F04D29/2244—Free vortex
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D5/00—Pumps with circumferential or transverse flow
- F04D5/001—Shear force pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses an eddy flow centrifugal constant pressure pump which belongs to the technical field of fluid machinery and engineering equipment and is used for the occasions with constant output pressure of water pumps. The utility model comprises a pump case composed of a pump front cover and a pump back cover, an inlet and an outlet arranged on the pump case, an impeller arranged in the pump case and a shaft supported by a bearing, wherein one end of the shaft is inserted into the pump case from the pump back cover via a shaft seal; the impeller is arranged on the end part of the shaft; the impeller is composed of an integrally formed back cover with a wheel hub and impeller blades; the impeller blade tilts backwards from the inlet and bends forwards near the outlet. The utility model is characterized in that the utility model also comprises at least one item of the following structural features that an outlet of the impeller blade twists, and the outlet angle near the pump case is larger than the outlet angle near the back cover of the impeller; the inner wall of the pump front cover is in a circular arc shape; the inlet of the pump shrinks and extends inward to form a conic shape. The utility model has the remarkable feature of high efficiency, with the advantages of enhanced cavitation erosion performance, small noise, etc.
Description
Technical field
The utility model relates to the centrifugal constant pressure pump of a kind of eddy flow, belongs to the Fluid Machinery and Engineering equipment technical field, can be used for the constant occasion of requirement pump output pressure.
Background technique
Need exit of pump pressure (lift) constant in a lot of fields, as high building spray fire-fighting system, fire-fighting truck, the building supplies water, sprinkling irrigation, mine drainage etc.Constant in order to reach system pressure, adopt water tower water-feeding in early days, or high building establishes water storage tank, after the seventies in last century, people adopt surge tank to cooperate the control power supply approximately; Adopt variable-frequency and variable-speed control in the recent period, the rotating speed that changes motor and Centrifugal water pump reaches the constant requirement of outlet pressure.The end of the nineties in last century, Xi'an space flight China space Special Pump Co., Ltd and Shenyang Water Pump Factory's Research Institute centrifugal tangent pump (partial emission pump), this pump has been expanded the Applicable scope of former aerospace tangent pump as the fire-fighting constant pressure pump.But because the defective of tangent pump working principle, its efficient is lower, and to the water quality requirement height, noise is big, and particularly when flow hour, its noise is then bigger.In addition, it can not have the self-priming structure, thereby has limited its applicable situation.
Summary of the invention
The purpose of this utility model is to provide a kind of eddy flow centrifugal constant pressure pump, and it has characteristics such as constant voltage, efficient height.
Comprise in order to reach the technological scheme that the purpose of this utility model takes: the pump case of forming by pump protecgulum and pump postoperculum, be arranged on import and outlet on the pump case, be arranged on impeller in the pump case, by the axle of bearings, wherein, one end of axle is inserted into the pump case from pump postoperculum by the axle envelope, described impeller is installed in the end of axle, this impeller is made up of the bonnet and the blade of integrated belt wheel hub, described blade recedes from inlet, bending forward again near the outlet port, it is characterized in that it also comprises a following structure characteristic at least:
(1) outlet of described blade distortion, the exit angle of close pump case is greater than the exit angle near the impeller bonnet;
(2) described pump protecgulum inwall is a circular arc;
(3) import of described pump is shunk and inwardly stretched, and is tapered.
In the centrifugal constant pressure pump of above-mentioned eddy flow, be provided with the self-priming chamber in the import of pump.
In the centrifugal constant pressure pump of above-mentioned eddy flow, described axle is vertical setting, and is provided with submersible motor in the upper end of axle, and the pump protecgulum is positioned at the below, and the import of pump is positioned at the bottom, outlet is positioned at the side.
In the centrifugal constant pressure pump of above-mentioned eddy flow, described axle is vertical setting, and the pump protecgulum is positioned at the below, and the import of pump is a bend pipe, and the import of this bend pipe is on vertical plane, and its outlet connects on horizontal plane and with the pump protecgulum.
The efficient height is a distinguishing feature of the present utility model.As, the blade exit distortion helps producing even longitudinal cyclone, raises the efficiency; The taper of shrinking is adopted in the import of pump, and slightly stretches in the pump housing, and it is even to help the import water velocity, reduces loss, raises the efficiency, and it also has the advantage that improves cavitation performance; Pump protecgulum inwall is circular arc, can reduce the bump loss of eddy flow, thereby raise the efficiency.
Description of drawings
Fig. 1 is the structural representation of the centrifugal constant pressure pump of the utility model eddy flow;
Fig. 2 is the structural representation of the blade of the centrifugal constant pressure pump of the utility model eddy flow.
Structural representation when Fig. 3 has the self-priming chamber for the centrifugal constant pressure pump of the utility model eddy flow.
Structural representation when Fig. 4 has submersible motor for the centrifugal constant pressure pump of the utility model eddy flow.
Structural representation when Fig. 5 is vertical setting of the centrifugal constant pressure pump of the utility model eddy flow.
Specific embodiments
Below in conjunction with accompanying drawing the utility model is further described:
Fig. 1 has represented an embodiment of the present utility model, promptly horizontal eddy flow centrifugal pump.Among the figure, 1 is the import of pump, and 2 is the pump protecgulum, and 3 is blade, and 4 is delivery side of pump, and 5 is pump postoperculum, and 6 is axle, and 7 is bearing support.
Structure characteristics more of the present utility model as can be seen from Figure.Be the taper of contraction as the inlet 1 of pump, and slightly stretch in the pump housing, the inwall of pump protecgulum 2 is circular arc.
Fig. 2 has represented the structure characteristic of blade, α be blade from the sweptback angle of inlet, range of choice is 30～50 °; Blade bends forward near the outlet port, and the length of this previous bending part is 1/3～1/5 of blade length overall; β
1Be Inlet cone angle; Because so the outlet of blade distortion is β
2' be the exit angle of blade near the impeller bonnet, β
2" be exit angle near pump case, β
2" greater than β
2'.
Fig. 3 is another embodiment of the present utility model, and 8 is the self-priming chamber that is located at import 1 place of pump, and present embodiment can be used for automobile-used fire-fighting, irrigates and mine drainage.
Among the embodiment shown in Figure 4, axle 6 vertically is provided with, and the pump protecgulum is positioned at the bottom of pump, on the top of axle 6 submersible motor 9 is installed.
Fig. 5 claims vertical eddy flow centrifugal constant pressure pump for the vertical form that is provided with of the present utility model.By among the figure as can be known, the import 1 of pump is a bend pipe, this bend pipe and pump protecgulum connect.
It should be noted last that, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (4)
1, the centrifugal constant pressure pump of a kind of eddy flow, mainly comprise, the pump case of forming by pump protecgulum and pump postoperculum, be arranged on import and outlet on the pump case, be arranged on impeller in the pump case, by the axle of bearings, wherein, one end of axle is inserted into the pump case from pump postoperculum by the axle envelope, described impeller is installed in the end of axle, this impeller is made up of the bonnet and the blade of integrated belt wheel hub, described blade recedes from inlet, bending forward again near the outlet port, it is characterized in that it also comprises a following structure characteristic at least:
(1) outlet of described blade distortion, the exit angle of close pump case is greater than the exit angle near the impeller bonnet;
(2) described pump protecgulum inwall is a circular arc;
(3) import of described pump is shunk and inwardly stretched, and is tapered.
2, the centrifugal constant pressure pump of eddy flow according to claim 1 is characterized in that, is provided with the self-priming chamber in the import of pump.
3, the centrifugal constant pressure pump of eddy flow according to claim 1 is characterized in that, described axle is vertical setting, and is provided with submersible motor in the upper end of axle, and the pump protecgulum is positioned at the below, and the import of pump is positioned at the bottom, outlet is positioned at the side.
4, the centrifugal constant pressure pump of eddy flow according to claim 1 is characterized in that, described axle is vertical setting, and the pump protecgulum is positioned at the below, and the import of pump is a bend pipe, and the import of this bend pipe is on vertical plane, and its outlet connects on horizontal plane and with the pump protecgulum.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200015465U CN2764967Y (en) | 2005-01-28 | 2005-01-28 | Eddy flow centrifugal constant pressure pump |
| PCT/CN2005/002322 WO2006079274A1 (en) | 2005-01-28 | 2005-12-27 | Vortex centrifugal constant pressure pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200015465U CN2764967Y (en) | 2005-01-28 | 2005-01-28 | Eddy flow centrifugal constant pressure pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2764967Y true CN2764967Y (en) | 2006-03-15 |
Family
ID=36167886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005200015465U Expired - Lifetime CN2764967Y (en) | 2005-01-28 | 2005-01-28 | Eddy flow centrifugal constant pressure pump |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN2764967Y (en) |
| WO (1) | WO2006079274A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101294580B (en) * | 2007-04-26 | 2010-04-21 | 李世煌 | Spiral flow constant-pressure pump |
| DE202012102918U1 (en) | 2012-08-02 | 2012-08-31 | Suzhou Scs Fluid Technology Co., Ltd. | Spiral current-constant pressure pump |
| CN102797698A (en) * | 2012-04-01 | 2012-11-28 | 苏州市世强流体技术有限公司 | Pump impeller |
| CN102066769B (en) * | 2008-06-13 | 2014-01-22 | 伟尔矿物澳大利亚私人有限公司 | Improvements relating to pump seal assemblies |
| CN106895024A (en) * | 2017-05-04 | 2017-06-27 | 李世煌 | Spiral flow constant-pressure pump |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102295138B (en) * | 2011-09-22 | 2013-04-03 | 中联重科股份有限公司 | Sprocket shaft mounting structure of lifter and lifter of asphalt mixing plant |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1495708A (en) * | 1974-01-11 | 1977-12-21 | Kamelmacher E | Blade for a centrifugal pump impeller |
| FI75652C (en) * | 1984-08-16 | 1988-07-11 | Sarlin Ab Oy E | Impeller at a pump, especially at an eddy current pump. |
| FR2640328B1 (en) * | 1988-12-09 | 1991-03-15 | Schlumberger Cie Dowell | BLADES ROTOR FOR CENTRIFUGAL PUMP, PUMP AND MIXER USING THE SAME |
| JP3003357B2 (en) * | 1992-02-28 | 2000-01-24 | 株式会社日立製作所 | Swirl pump |
| CN2369013Y (en) * | 1999-05-17 | 2000-03-15 | 江苏振华泵业制造有限公司 | Vertical self-priming pump |
| CN2421432Y (en) * | 2000-01-06 | 2001-02-28 | 曹洪禄 | Vertical mud pump |
| CN2584889Y (en) * | 2002-10-25 | 2003-11-05 | 北京建大流体技术研究院 | Whirlwind centrifugal constant-pressure spray fire pumps |
| CN2641328Y (en) * | 2003-09-03 | 2004-09-15 | 林恒远 | Spiral shell shaped self-sucking type centrifugal pump |
-
2005
- 2005-01-28 CN CNU2005200015465U patent/CN2764967Y/en not_active Expired - Lifetime
- 2005-12-27 WO PCT/CN2005/002322 patent/WO2006079274A1/en not_active Application Discontinuation
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101294580B (en) * | 2007-04-26 | 2010-04-21 | 李世煌 | Spiral flow constant-pressure pump |
| CN102066769B (en) * | 2008-06-13 | 2014-01-22 | 伟尔矿物澳大利亚私人有限公司 | Improvements relating to pump seal assemblies |
| CN102797698A (en) * | 2012-04-01 | 2012-11-28 | 苏州市世强流体技术有限公司 | Pump impeller |
| DE202012102918U1 (en) | 2012-08-02 | 2012-08-31 | Suzhou Scs Fluid Technology Co., Ltd. | Spiral current-constant pressure pump |
| CN106895024A (en) * | 2017-05-04 | 2017-06-27 | 李世煌 | Spiral flow constant-pressure pump |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2006079274A1 (en) | 2006-08-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150128 Granted publication date: 20060315 |