CN201133353Y - Double suction constant pressure pump - Google Patents
Double suction constant pressure pump Download PDFInfo
- Publication number
- CN201133353Y CN201133353Y CNU2007201991628U CN200720199162U CN201133353Y CN 201133353 Y CN201133353 Y CN 201133353Y CN U2007201991628 U CNU2007201991628 U CN U2007201991628U CN 200720199162 U CN200720199162 U CN 200720199162U CN 201133353 Y CN201133353 Y CN 201133353Y
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- CN
- China
- Prior art keywords
- pump
- impeller
- constant pressure
- suction chamber
- double suction
- 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 - Fee Related
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Abstract
The utility model relates to a double-suction constant pressure pump, which is composed of a pump body, a pump case and a rotor component; wherein, the rotor component is composed of an impeller, a shaft, a sealing member, a bearing and a water deflector; the pump casing is composed of a pump body and a pump case; wherein, a suction chamber and a pumping chamber are arranged between the pump body and the pump case; an interconnected internal flow is arranged in the pump cover and the sealing shelf of the sealing member; wherein, the installation angle of outlet of the impeller vane is 90 degree, and the ratio of the inner diameter of the pump case that corresponding to the impeller to the outer diameter of the impeller is 1.1 to 1.2; a plurality of baffle tongues are arranged in the suction chamber. In the utility model, the installation angle of the impeller vane is 90 degree, and meanwhile a plurality of baffle tongues are arranged in the suction chamber, thus the rotating speed of the fluid can be zero when entering into the suction chamber and the delivery lift of the pump does not change as the flow rate changes. The utility model solves the technological problem of overpressure at small flow rate and insufficient pressure at large flow rate.
Description
Technical field:
The utility model relates to mechanical field, relates in particular to pump, particularly a kind of double suction constant pressure pump.
Background technique:
In the prior art, the lift of water pump changes along with its flow, and when pump capacity hour lift is big, the pressure of its generation just is big; Lift diminishes when pump capacity is big, and the pressure of its generation diminishes.There is bigger variation in the pressure that has the water pump generation now with its flow, makes water pump can produce the phenomenon of superpressure and underpressure by small flow in big discharge process in its flow process scope, thereby influences the service behaviour of other hydraulic mechanism that links to each other with water pump.
Summary of the invention:
The purpose of this utility model provides a kind of double suction constant pressure pump, thereby the lift that described this double suction constant pressure pump will solve water pump in the prior art changes with its flow and causes water pump technical problem of underpressure when superpressure and big flow when the small flow.
This double suction constant pressure pump of the present utility model is made of the pump housing, pump cover and rotor part, described rotor part is made of impeller, axle, Sealing, bearing and water retaining ring, the described pump housing and pump cover connect and compose pump case, be provided with suction chamber and pumping chamber between the pump housing and the pump cover, be respectively arranged with the inner flow passage that is interconnected in the seal rack of pump cover and Sealing, wherein, the blade exit laying angle of described impeller is 90 degree, and the internal diameter of described pump case is 1.1～1.2 with the ratio of impeller outer diameter.
Further, in described suction chamber, be provided with a plurality of cut waters.
Further, between the water outlet diffusing tube of the described pumping chamber and the pump housing, be provided with throat.
Further, the blade quantity of described impeller is 6～8.
Concrete, the rotor part described in the utility model comprises that impeller, axle, Sealing, bearing and water retaining ring all can adopt known schemes of the prior art, do not repeat them here.
Working principle of the present utility model is: the blade exit laying angle of impeller is set to 90 degree, its rotational speed is zero when making liquid enter suction chamber, thereby making the lift one discharge relation curve of water pump is a horizontal linear, also is that the lift of water pump does not change with flow.Be provided with cut water in the suction chamber, can effectively prevent liquid in rotation.Pump housing delivery chamber is the runner that goes in ring, and fluid is at impeller outer Zhou Xuanzhuan, and only some fluid is exported in pump housing diffusing tube ingress, and all the other most of fluids still rotate in annular space.The portion of shouting of joining with diffusing tube makes flow of liquid cross the rotational speed that speed equals liquid, thereby keeps the flow of pump constant.The utlity model has the characteristics of unsteady flow voltage stabilizing, in the full flow scope, lift changes little, when pump changes in required peak rate of flow scope from zero delivery, its lift changes in 5% scope, thereby avoids water pump shortcoming of underpressure when superpressure and big flow when small flow.The utility model also can adopt built-in seal lubrication structure, utilizes sealing circulating water that water pump sealing system is lubricated, washes.The utlity model has symplex structure, axial force and radial force autobalance have been improved the operating conditions of bearing, and therefore, water pump operation is steady, noise is low.Pump shaft is a full-closed structure, guarantees not contact with medium not corrosion, long service life.Under the identical situation of bore, anti-cavitation performance obviously improves.
The utility model and prior art contrast, and its effect is actively with tangible.The utility model is made as 90 degree with the laying angle of impeller blade, a plurality of cut waters are set in suction chamber simultaneously, its rotational speed is zero when making liquid enter suction chamber, thereby the lift of water pump do not changed with its flow, solved water pump technical problem of underpressure when superpressure and big flow when small flow.
Description of drawings:
Fig. 1 is the cross-sectional view of double suction constant pressure pump of the present utility model.
Fig. 2 is the end view of double suction constant pressure pump of the present utility model.
Fig. 3 is that the impeller blade in the double suction constant pressure pump of the present utility model is laid structural representation.
Fig. 4 is the diffusing tube laryngeal structure schematic representation in the double suction constant pressure pump of the present utility model.
Embodiment:
As Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4, double suction constant pressure pump of the present utility model is by the pump housing 1, pump cover 2 and rotor part constitute, described rotor part is by impeller 3, axle 4, Sealing 5, bearing 6 and water retaining ring 7 constitute, the described pump housing 1 and pump cover 2 constitute pump case, be provided with suction chamber 8 and pumping chamber 9 between the described pump housing 1 and the pump cover 2, in the seal rack 10 of described pump cover 2 and Sealing 5, be provided with the inner flow passage that is connected, wherein, described impeller blade 11 outlet laying angles are 90 °, with the ratio of the internal diameter of described impeller 3 corresponding pump cases and described impeller 3 external diameters be 1.1～1.2.
Further, in described suction chamber 8, be provided with a plurality of cut waters.
Further, between described pumping chamber 9 and pump outlet diffusing tube, be provided with throat 12.
Further, described impeller blade 11 quantity are 6～8.
Claims (4)
1. double suction constant pressure pump, constitute by the pump housing, pump cover and rotor part, described rotor part is made of impeller, axle, Sealing, bearing and water retaining ring, the described pump housing and pump cover connect and compose pump case, be provided with suction chamber and pumping chamber between the pump housing and the pump cover, be respectively arranged with the inner flow passage that is interconnected in the seal rack of pump cover and Sealing, it is characterized in that: the blade exit laying angle of described impeller is 90 degree, and the internal diameter of described pump case is 1.1～1.2 with the ratio of impeller outer diameter.
2. double suction constant pressure pump as claimed in claim 1 is characterized in that: be provided with a plurality of cut waters in described suction chamber.
3. double suction constant pressure pump as claimed in claim 1 is characterized in that: be provided with throat between the water outlet diffusing tube of the described pumping chamber and the pump housing.
4. double suction constant pressure pump as claimed in claim 1 is characterized in that: the blade quantity of described impeller is 6～8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201991628U CN201133353Y (en) | 2007-12-12 | 2007-12-12 | Double suction constant pressure pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201991628U CN201133353Y (en) | 2007-12-12 | 2007-12-12 | Double suction constant pressure pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201133353Y true CN201133353Y (en) | 2008-10-15 |
Family
ID=40061626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201991628U Expired - Fee Related CN201133353Y (en) | 2007-12-12 | 2007-12-12 | Double suction constant pressure pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201133353Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334932A (en) * | 2013-06-26 | 2013-10-02 | 苏州经贸职业技术学院 | Double-suction coning constant pressure pump |
| CN107476985A (en) * | 2017-09-13 | 2017-12-15 | 江苏大学镇江流体工程装备技术研究院 | A kind of double suction disc-stack centrifuge pump |
-
2007
- 2007-12-12 CN CNU2007201991628U patent/CN201133353Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334932A (en) * | 2013-06-26 | 2013-10-02 | 苏州经贸职业技术学院 | Double-suction coning constant pressure pump |
| CN103334932B (en) * | 2013-06-26 | 2016-03-23 | 苏州经贸职业技术学院 | A kind of double suction coning constant pressure pump |
| CN107476985A (en) * | 2017-09-13 | 2017-12-15 | 江苏大学镇江流体工程装备技术研究院 | A kind of double suction disc-stack centrifuge pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081015 Termination date: 20141212 |
|
| EXPY | Termination of patent right or utility model |