CN201057170Y - Straight-hole low specific speed centrifugal pump impeller - Google Patents
Straight-hole low specific speed centrifugal pump impeller Download PDFInfo
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- CN201057170Y CN201057170Y CNU2007200697425U CN200720069742U CN201057170Y CN 201057170 Y CN201057170 Y CN 201057170Y CN U2007200697425 U CNU2007200697425 U CN U2007200697425U CN 200720069742 U CN200720069742 U CN 200720069742U CN 201057170 Y CN201057170 Y CN 201057170Y
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Abstract
The utility model relates to a centrifugal pump impeller, pertaining to pump product technique field of fluid machinery, in particular to a low-specific-speed centrifugal pump impeller of straight-hole type by taking water or other liquid as medium. The utility model comprises an impeller hub 21, an impeller inhaling ring 22, an impeller disc body 23 and a plurality of straight-hole passages 24. The utility model is characterized in that: the impeller is connected with the impeller inhaling ring through the plurality of straight-hole passages; a liquid passage is formed by the plurality of straight-hole passage and the impeller inhaling ring; the utility model has the advantages of reliable operation, being convenient for maintenance, high pump efficiency, good cavitation performance, low vibration and noise and motor having no overload, thus meeting the requirement of environment protection. The utility model is mainly applied to the fields of petroleum, electricity, chemicals, steel, medicine, environmental protection, fire protection, municipal, water cleaning, national defense industry, textile printing and dyeing, mining, thermal system, heating, air conditioning circulation, civil construction, etc.
Description
[technical field]
The utility model relates to centrifugal pump impeller and belongs to pump series products technical field in the fluid machinery, the straight pass low specific-speed centrifugal pump impeller that particularly a kind of medium is water or other liquid.
[background technique]
Centrifugal pump impeller is the core component of centrifugal pump, centrifugal pump is a pump series products important in the fluid machinery, be fit to pumps water and other not high liquid of viscosity, have 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 low specific-speed centrifugal pump (20≤specific speed≤80) 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.
A kind of low specific-speed centrifugal pump impeller of prior art, its structure as shown in Figure 1, it mainly comprises suction eye ring 1, impeller hub 2, front shroud of impeller 3, back shroud of impeller 4 and a plurality of flexure type blade 5 compositions, and wherein impeller front and rear cover plate and interlobate space constitute fluid passage.
The working principle of this blade type low specific-speed centrifugal pump impeller is by prime mover (being generally motor) impeller high speed rotating, make the liquid that is stored in the pump housing under the impeller action of centrifugal force, liquid passes through the outlet that interlobate runner is discharged to impeller by the import of blade impellers, realizes prime mover (being generally motor) mechanical energy is converted to the purpose of liquid energy (kinetic energy, pressure energy, potential energy).
But this blade type low specific-speed centrifugal pump impeller exists following point:
1. manufacture view: impeller diameter is bigger than normal, and exit width is less than normal, is generally 4 millimeters, causes this blade impellers reject rate height in casting processing.Vane type line is inaccurate simultaneously, and manufacture difficulty is big.
2. aspect of performance: impeller adiabatic efficiency is on the low side, and easy cavitation during big flow produces vibration and noise, shortens the working life of pump.Flow-power curve is obviously soaring, causes the work of prime mover (being generally motor) overload, and prime mover (being generally motor) has the possibility of burning.
[summary of the invention]
Task of the present utility model provides a kind of straight pass low specific-speed centrifugal pump impeller, and the low specific-speed centrifugal pump blade impellers that has solved prior art is big in the casting difficulty, reject rate is high, the inaccurate manufacturing difficult problem of vane type line.Improve impeller adiabatic efficiency simultaneously, improved cavitation performance, flow-power curve is soaring mild, reaches the purpose of prime mover (being generally motor) proper functioning.
The technical solution of the utility model is as follows:
A kind of straight pass low specific-speed centrifugal pump impeller, it comprises impeller hub 21, suction eye ring 22, impeller disc 23, a plurality of straight hole passage 24 compositions.
Described impeller is connected with the suction eye ring by a plurality of straight hole passages, and a plurality of straight hole passages and suction eye ring in the impeller disc constitute fluid passage jointly.
Described suction eye ring is connected with impeller disk front-end face by welding, and impeller hub is connected with impeller disk ear end face by welding.
Straight pass low specific-speed centrifugal pump impeller of the present utility model has following advantage:
1. the straight pass impeller substitutes blade impellers, has fundamentally solved the low specific-speed centrifugal pump blade impellers in the high difficult problem of foundary loss rate.
2. the just a plurality of straight holes of the fluid passage of straight pass impeller are easy to the machining moulding, and runner is accurate, and is highly polished.And the blade impellers runner is fully by casting, and the liquid passage can't machining between blade, and degree of finish is relatively poor.
3. the straight pass 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 efficient of 4 same test installation of pump comparative trial proof straight pass low specific-speed centrifugal pump impellers and cavitation performance index and noise vibration index all are better than blade type low specific-speed centrifugal pump impeller.
That straight pass low specific-speed centrifugal pump impeller of the present utility model has is 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.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.
[description of drawings]
Fig. 1 is the structural representation of a kind of blade impellers of prior art;
Fig. 2 is the A-A sectional drawing of Fig. 1;
Fig. 3 is the structural representation of a kind of straight pass low specific-speed centrifugal pump impeller of the present utility model;
Fig. 4 is the A-A sectional drawing of Fig. 3.
[specific embodiment]
Referring to Fig. 3, Fig. 4, the utility model is a kind of straight pass low specific-speed centrifugal pump impeller (medium is water or other liquid), it comprises impeller hub 21, suction eye ring 22, impeller disc 23, a plurality of straight hole passage 24 compositions, impeller is connected with the suction eye ring by a plurality of straight hole passages, a plurality of straight hole passages and suction eye ring in the impeller disc constitute fluid passage jointly, the suction eye ring is connected with impeller disk front-end face by welding, and impeller hub is connected with impeller disk ear end face by welding.Its working procedure is as follows:
Straight pass low specific-speed centrifugal pump impeller is by wheel hub high speed rotating under driven by motor, suction eye ring place produces vacuum, the liquid of suction line is drawn onto suction eye, straight pass low specific-speed centrifugal pump impeller high speed rotating produces centrifugal force, liquid is transported to impeller outer edge by a plurality of straight holes of straight pass impeller, 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; With the effect that long distance is carried, realize the purpose of low specific-speed centrifugal pump proper functioning transfusion simultaneously.
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 (2)
1. straight pass low specific-speed centrifugal pump impeller, comprise impeller hub (21), suction eye ring (22), impeller disc (23) and a plurality of straight hole passage (24), it is characterized in that: described impeller is connected with the suction eye ring by a plurality of straight hole passages, and a plurality of straight hole passages and suction eye ring in the impeller disc constitute fluid passage jointly.
2. straight pass low specific-speed centrifugal pump impeller as claimed in claim 1 is characterized in that: the described suction eye ring of stating is connected with impeller disc front-end face by welding, and impeller hub is connected with impeller disc ear end face by welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200697425U CN201057170Y (en) | 2007-05-11 | 2007-05-11 | Straight-hole low specific speed centrifugal pump impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200697425U CN201057170Y (en) | 2007-05-11 | 2007-05-11 | Straight-hole low specific speed centrifugal pump impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201057170Y true CN201057170Y (en) | 2008-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200697425U Expired - Fee Related CN201057170Y (en) | 2007-05-11 | 2007-05-11 | Straight-hole low specific speed centrifugal pump impeller |
Country Status (1)
| Country | Link |
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| CN (1) | CN201057170Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422503A (en) * | 2015-12-30 | 2016-03-23 | 合肥华升泵阀股份有限公司 | Combined impeller |
| CN105756950A (en) * | 2016-04-05 | 2016-07-13 | 镇江江大泵业科技有限公司 | Novel efficient sewage pump |
| 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 |
| 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 |
| CN105889123A (en) * | 2014-12-30 | 2016-08-24 | 兰州理工大学 | Novel-structure impeller of low-specific-speed centrifugal pump |
-
2007
- 2007-05-11 CN CNU2007200697425U patent/CN201057170Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889123A (en) * | 2014-12-30 | 2016-08-24 | 兰州理工大学 | Novel-structure impeller of low-specific-speed centrifugal pump |
| CN105422503A (en) * | 2015-12-30 | 2016-03-23 | 合肥华升泵阀股份有限公司 | Combined impeller |
| CN105756950A (en) * | 2016-04-05 | 2016-07-13 | 镇江江大泵业科技有限公司 | Novel efficient sewage pump |
| 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 |
| 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 |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080507 Termination date: 20100511 |