CN201265550Y - Centrifugal pump with ultra-low specific speed - Google Patents

Centrifugal pump with ultra-low specific speed Download PDF

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Publication number
CN201265550Y
CN201265550Y CNU2008201527303U CN200820152730U CN201265550Y CN 201265550 Y CN201265550 Y CN 201265550Y CN U2008201527303 U CNU2008201527303 U CN U2008201527303U CN 200820152730 U CN200820152730 U CN 200820152730U CN 201265550 Y CN201265550 Y CN 201265550Y
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CN
China
Prior art keywords
impeller
specific speed
pump
low specific
ultra
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
Application number
CNU2008201527303U
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Chinese (zh)
Inventor
王者文
施勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANGHAI KAIQUAN PUMP (GROUP) CO Ltd
Original Assignee
SHANGHAI KAIQUAN PUMP (GROUP) CO Ltd
Priority date (The priority date 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 date listed.)
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Priority to CNU2008201527303U priority Critical patent/CN201265550Y/en
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Publication of CN201265550Y publication Critical patent/CN201265550Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a centrifugal pump with ultralow specific speed, which comprises an impeller (6) with ultralow specific speed. The impeller (6) comprises an impeller hub (63) connected with a pump shaft; the impeller hub (63) is connected with one side of an impeller round disk (62), and the other side of the impeller round disk (62) is connected with a suction inlet ring (61) arranged at the center of the impeller round disk (62). The utility model has the advantages of reliable operation, convenient maintenance, high pump efficiency, good cavitation performance, low vibration and noise and no motor overload and conforms to the requirements on energy conservation and environment protection; and no moulds are needed for casting formation so that the mould investment cost can be saved, and in particular, remarkable economic benefits can be generated during single-piece small-lot production.

Description

Super-low specific speed centrifugal pump
Technical field
The utility model relates to the ultra-low specific speed that a kind of medium is water or other liquid (specific speed≤20) centrifugal pump, relates in particular to the core ultra-low specific speed blade wheel structure in this centrifugal pump.
Background technique
Centrifugal pump is a pump series products important in the fluid machinery, is fit to pumps water and other not high liquid of viscosity, has that range of flow is big, flow and pressure stability, rotating speed is higher and compact structure, in light weight, convenient and reliable operation and the cheap advantage of maintenance cost.But centrifugal pump especially super-low specific speed centrifugal pump has himself shortcoming, increases as its impeller diameter, and exit width diminishes, and the difficulty of making the high quality impeller is increased.Pump efficiency significantly descends, and hump appears in flow-head curve easily, and flow-power curve is obviously soaring, the possibility that prime mover (being generally motor) has overload to burn.
Summary of the invention
The utility model technical issues that need to address have provided a kind of super-low specific speed centrifugal pump, are intended to solve the above problems.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:
The utility model comprises: the ultra-low specific speed impeller; Described impeller comprises: the impeller hub of a connection pump shaft; The one side that connects an impeller disk on impeller hub, the another side of impeller disk connect a suction choma of the heart therein.
Compared with prior art, the beneficial effects of the utility model are: have reliable, easy to maintenance, pump efficiency is high, cavitation performance is good, vibration and noise is low, the overload free advantage of motor, meets the energy-conserving and environment-protective requirement; Need not die sinking tool casting, can save mould and drop into expense, especially to single and mini-batch production production remarkable in economical benefits.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a ultra-low specific speed blade wheel structure schematic representation among Fig. 1;
Fig. 3 is the left view of Fig. 2.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
By Fig. 1, Fig. 2, Fig. 3 as seen: the utility model comprises: ultra-low specific speed impeller 6; Described impeller 6 comprises: the impeller hub 63 of a connection pump shaft; The one side that connects an impeller disk 62 on impeller hub 63, the another side of impeller disk 62 connect a suction choma 61 of the heart therein;
At least one group of above fluid passage straight hole 621 and fluid passage inclined hole 622 is set on the described impeller disk 62;
The quantity ratio of described fluid passage inclined hole 622 and fluid passage straight hole 621 is greater than or equal to 1;
Described suction choma 61 is divided into suction choma top and sucks the choma bottom; Suck choma top and connect pump discharge, suck the choma bottom and connect Pump Suction Nozzle.
By Fig. 1, Fig. 2, Fig. 3 as seen: super-low specific speed centrifugal pump is equipped with prime mover (being generally motor) 1, pump cover 2, the pump housing 3, Pump Suction Nozzle 4 and pump discharge 5, ultra-low specific speed impeller 6, pump shaft 7, shaft seal assembly (being generally mechanical seal) 8.Prime mover (being generally motor) 1 is fixed on the pump cover 2 by being threaded, and pump cover 2 is connected with pump case 3, and Pump Suction Nozzle 4 and pump discharge 5 are arranged on the left and right sides of the pump housing 3.Ultra-low specific speed impeller 6 mainly is made up of suction eye ring 61, impeller disk 62, impeller hub 63.Wherein impeller disk 62 constitutes fluid passage by a plurality of straight holes 621 and inclined hole 622, forms many groups one and advances a scene 2 formula structure or an inlet and multi-exit structure.Ultra-low specific speed impeller hub 63 links to each other with prime mover (being generally motor) 1 by pump shaft 7, and the ultra-low specific speed impeller is divided into two working rooms by suction eye ring 61 with the pump housing, and sucking above the choma be pumping chamber, is suction chamber below the suction choma.Suction chamber links to each other with Pump Suction Nozzle, and pumping chamber links to each other with pump discharge.Pump cover 2 is provided with shaft seal assembly (being generally mechanical seal) 8 with the binding site of pump shaft 7, and rotating ring is done high speed rotating with the ultra-low specific speed impeller in the mechanical seal, and stationary ring is fixed on the pump cover in the mechanical seal.Rotating ring and stationary ring form end face seal by friction pair, reach to stop the interior liquid leakage of pump and prevent that the pump outer air from leaking into the purpose in the pump.
The utility model working procedure is as follows:
Require during pump startup to fill liquid in the pump, the utility model is high speed rotating under driven by motor, produce vacuum at ultra-low specific speed impeller inlet place, the liquid of suction line is drawn onto the ultra-low specific speed impeller inlet, ultra-low specific speed impeller high speed rotating produces centrifugal force, a plurality of straight holes and the inclined hole of liquid by the ultra-low specific speed impeller constitutes that many groups one are advanced the scene 2 formula or an inlet and multi-exit fluid passage is transported to impeller outer edge, and liquid is discharged to pumping chamber and finishes moderating process, and speed can transfer the pressure energy to.Liquid is finally discharged by exhaust port.Finish the overall process that the mechanical energy of prime mover (being generally motor) is changed into the energy (kinetic energy, pressure energy, potential energy) of liquid, realize simultaneously liquid by low pressure to high pressure; By lower position to the high position; Purpose with long distance conveying.
Organic cooperation of above-mentioned each constituent elements has been arranged just, key is the transformation of energy effect that the ultra-low specific speed impeller has been arranged, could guarantee that super-low specific speed centrifugal pump is drawn onto liquid the suction chamber of the pump housing by Pump Suction Nozzle, be discharged to the pumping chamber of the pump housing again by the runner of ultra-low specific speed impeller, be pressed onto the overall process of the exhaust port of pump again, and realize the purpose of super-low specific speed centrifugal pump proper functioning transfusion.
The utlity model has following advantage:
1 efficient and cavitation performance index and noise vibration index all are better than common blade formula super-low specific speed centrifugal pump.
2: the ultra-low specific speed impeller substitutes blade impellers, has fundamentally solved in the super-low specific speed centrifugal pump common blade formula impeller in the high difficult problem of foundary loss rate.
3: the ultra-low specific speed impeller need not die sinking tool casting, saves mould and drops into expense.Especially to single and mini-batch production production remarkable in economical benefits.
The utlity model has reliable, easy to maintenance, pump efficiency is high, cavitation performance is good, vibration and noise is low, the overload free advantage of motor, meets the energy-conserving and environment-protective requirement.Adopt the utility model super-low specific speed centrifugal pump to be mainly used in industries such as oil, electric power, chemical industry, iron and steel, medicine, environmental protection, fire-fighting, municipal administration, water purification, defence and military, textile printing and dyeing, digging ore dressing, thermodynamic system, heating, air-conditioning circulation and civil building.
Certainly, those skilled in the art in the present technique field will be appreciated that, the foregoing description only is to be used for illustrating the utility model, and be not with opposing qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in the scope of the utility model claim variation, the modification of the foregoing description.

Claims (4)

1. a super-low specific speed centrifugal pump comprises: ultra-low specific speed impeller (6); It is characterized in that: described impeller (6) comprising: the impeller hub of a connection pump shaft (63); Go up the one side that connects an impeller disk (62) at impeller hub (63), the another side of impeller disk (62) connects a suction choma (61) of the heart therein.
2. super-low specific speed centrifugal pump according to claim 1 is characterized in that: at least one group of above fluid passage straight hole (621) and fluid passage inclined hole (622) is set on the described impeller disk (62).
3. super-low specific speed centrifugal pump according to claim 2 is characterized in that: the quantity ratio of described fluid passage inclined hole (622) and fluid passage straight hole (621) is greater than or equal to 1.
4. according to claim 1 or 2 or 3 described super-low specific speed centrifugal pumps, it is characterized in that: described suction choma (61) is divided into suction choma top and sucks the choma bottom; Suck choma top and connect pump discharge, suck the choma bottom and connect Pump Suction Nozzle.
CNU2008201527303U 2008-09-04 2008-09-04 Centrifugal pump with ultra-low specific speed Expired - Fee Related CN201265550Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008201527303U CN201265550Y (en) 2008-09-04 2008-09-04 Centrifugal pump with ultra-low specific speed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008201527303U CN201265550Y (en) 2008-09-04 2008-09-04 Centrifugal pump with ultra-low specific speed

Publications (1)

Publication Number Publication Date
CN201265550Y true CN201265550Y (en) 2009-07-01

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2451839C1 (en) * 2010-09-28 2012-05-27 Общество с ограниченной ответственностью Деловой центр "Галактика" Axial-radial tunnel blade wheel
CN105756949A (en) * 2016-04-05 2016-07-13 镇江江大泵业科技有限公司 Special impeller for novel efficient sewage pump
CN105756950A (en) * 2016-04-05 2016-07-13 镇江江大泵业科技有限公司 Novel efficient sewage pump
CN105756952A (en) * 2016-04-05 2016-07-13 镇江江大泵业科技有限公司 High-coaxiality connection mechanism for pipeline pump
CN106593885A (en) * 2016-11-22 2017-04-26 北京控制工程研究所 Space ultralow specific speed centrifugal pump hydraulic model

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2451839C1 (en) * 2010-09-28 2012-05-27 Общество с ограниченной ответственностью Деловой центр "Галактика" Axial-radial tunnel blade wheel
CN105756949A (en) * 2016-04-05 2016-07-13 镇江江大泵业科技有限公司 Special impeller for novel efficient sewage pump
CN105756950A (en) * 2016-04-05 2016-07-13 镇江江大泵业科技有限公司 Novel efficient sewage pump
CN105756952A (en) * 2016-04-05 2016-07-13 镇江江大泵业科技有限公司 High-coaxiality connection mechanism for pipeline pump
CN106593885A (en) * 2016-11-22 2017-04-26 北京控制工程研究所 Space ultralow specific speed centrifugal pump hydraulic model
CN106593885B (en) * 2016-11-22 2019-05-24 北京控制工程研究所 A kind of space super-low specific speed centrifugal pump hydraulic model

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GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090701

Termination date: 20110904