CN205225767U - High -efficient low lift is dirty pump stealthily - Google Patents
High -efficient low lift is dirty pump stealthily Download PDFInfo
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- CN205225767U CN205225767U CN201520954245.8U CN201520954245U CN205225767U CN 205225767 U CN205225767 U CN 205225767U CN 201520954245 U CN201520954245 U CN 201520954245U CN 205225767 U CN205225767 U CN 205225767U
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- pump
- impeller
- volute
- pump cover
- low lift
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Abstract
The utility model relates to a high -efficient low lift is dirty pump stealthily, it is including dive motor, the device of being qualified for the next round of competitions, volute, pump cover and impeller. Wherein the bolt hookup is on the bottom end cover of dive motor for the pump cover, and dive electric motor rotor axle passes from the pump cover, and the key fastening is on the rotor shaft for the impeller, and the volute is adorned on the pump cover, impeller choma and volute water inlet sealing connection, water pump and the coaxial hookup of dive motor, the flow surface of pump cover is streamlined, the impeller is the mixed -flow structure to the back shroud design is the pitch arc type, impeller, pump cover, volute post assembling form the semi -closed shape of slick and sly similar streamline, dive motor stator outside scribbles the insulating paint of heat conduction material, and the cable outlet of dive motor is other in the motor side. The utility model discloses high -efficient low lift is dirty pump stealthily has that the flow is big, the lift is low, the sewer can the reinforce, efficient characteristics, is applicable to sewage treatment, satisfies large -traffic row of sewage treatment's such as municipal sewage treatment requirement.
Description
Technical field
The utility model belongs to pump technology field, relates to a kind of submerged pump, is specifically related to a kind of submersible sewage electric pump.
Background technique
The efficiency of water pump and the specific speed of pump have direct relation, and specific speed is the highest at 100 ~ 300 range efficiencies, when specific speed is less than 100, and decrease in efficiency, specific speed is less, and efficiency is lower; When specific speed is greater than 300, efficiency also declines, and specific speed is larger, and efficiency is lower.The specific speed of general submerged pump design is often less than 1000.Due to the specific speed of large discharge, low lift submersible pump very high (being often greater than 1000, even higher), the submersible pump of prior art adopts axial-flow pump design concept mostly, and this pump structure feature is impeller is axial flow, and pump case is guide-vane.The submersible pump of this structure, though design efficiency is high, is only applicable to clear water or is similar in clear water use, and when water quality is muddy, impurity dirt is more, when particularly comparatively large, the concentration of impurity particle is larger, cannot normally use.And existing sewage pump adopts flow channel type impeller mostly, pump case adopts voluted type, and as shown in Figure 1, by submersible motor 1, top cover 1.1, casing 1.2, outlet line device 2, volute 3, pump cover 4, impeller 5 form structure.Wherein, outlet line device 2, top cover 1.1, casing 1.2, pump cover 4, volute 3 are fixedly connected sequentially in aggregates, motor 1 is arranged in casing 1.2, top cover 1.1 has wire outlet hole 1.1.1 and is connected with outlet line device 2, impeller 5 is arranged in volute 3, volute has water intake 3.1, and impeller port ring 5.1 and volute water intake 3.1 are tightly connected.Although the sewage pump of this structure solve muddy in water quality, impurity dirt is more, the problem that cannot use when particularly comparatively large, the concentration of impurity particle is larger, because this impeller is flow channel type, cannot pass through large discharge (3000m
3/ more than h), and efficiency is very low.Outlet line device 2 is installed in this top cover 1.1 front end another, and not only will dismantle top cover 1.1 when replacing with step bearing, the line also must dismantled in termination 2, causes secondary failure.In addition, the submerged pump of prior art, because unavoidably producing oval grade for deformation in casing 1.2 and stator 1.3 course of working, so that there will be space, reduction heat-transfer coefficient when casing 1.2 contacts with stator 1.3, weakening motor radiating ability, affects motor working life.
Therefore for realizing the efficient application of large discharge submersible pump at sewage treatment area, the submerged pump of a kind of efficient low lift of necessary research and development.
Model utility content
The purpose of this utility model is the deficiency in view of existing submersible pump, sewage pump, a kind of efficient low lift submerged pump is provided, particularly large at flow, Effec-tive Function in the working environment that lift is low, be applicable to sewage treatment, meet the requirement of the large discharge sewer process such as municipal administration, sewage treatment.
The efficient low lift submerged pump of the one that the utility model proposes, comprises submersible motor, outlet line device, volute, pump cover and impeller; Described submersible motor is made up of top cover, casing, stator, rotor and lower end cap; Stator press-loading in casing, top cover and casing upper end Bolt Connection, casing lower end and lower end cap Bolt Connection; Rotor is contained in stator interior, connects respectively with bearing with top and lower end cap, and open a wire outlet hole in position on lower side in the outer garden of casing, outlet line device connects with wire outlet hole and forms submersible motor.It is characterized in that, pump cover Bolt Connection is on the lower end cap of submersible motor, diving generator rotor axle passes from pump cover, impeller key is fastened on rotor shaft, volute bolt is contained on pump cover, impeller port ring is connected with volute inlet seal, and impeller coaxially connects with submersible motor, forms the semiclosed shape overall structure of round and smooth similar streamline after the assembling of described impeller, pump cover, volute.
Described wire outlet hole is in the bottom of casing cylindrical, and outlet box is contained on wire outlet hole, and the cable outlet of submersible motor is by motor side.
Thermal conductive material layer is scribbled outside described submersible motor stator.
Outside described submersible motor stator, thermal conductive material layer is insulating oil enamelled coating.
Flow-passing surface and the back shroud of impeller of described pump cover become corresponding circular arc streamline, and direction is consistent.
Described impeller is mixed-flow structure, and back shroud flow-passing surface is arc line type.
Compared with prior art, the utility model has following beneficial effect:
1. during work, rotor rotarily drives wheel rotation, because impeller High Rotation Speed produces centrifugal force, water produces pressure at impeller internal along impeller working surface tangent direction high-speed motion, the utility model due to adopt mixed-flow impeller working surface back shroud become circular arc streamline, flow-passing surface and the back shroud of impeller of pump cover become corresponding circular arc streamline, and direction is consistent, impeller, pump cover and the rear semiclosed shape and structure forming round and smooth similar streamline of volute assembling, water middle resistance along being subject to during flowing mutually and frictional force minimum, most effective, reach more than 70%.
2. the utility model is owing to adopting the streamlined semi-closed structure of arc line type mixed flow impeller, similar streamlined pump cover and rotary flow type volute composition, compare with Submerged Axial Flow Pump with traditional flow channel type sewage pump, sewer ability, the passing capacity of existing flow channel type structure are strong, have again the feature that the flow of shaft flow structure is large, efficiency is high.Light, the energy saving of motor load under same flow and lift, the advantage that fault is little, service time is long, be particularly suitable for the engineering uses such as municipal administration water drainage, sewage treatment.
3, the utility model is because outlet line device design is in the side of motor, compared with outlet line device being installed with the submerged pump top cover of prior art, when water pump use for a long time there is upper end bearing fault time, need to dismantle top cover and conveniently replaced.And the submerged pump top cover outlet of prior art maximum shortcoming not only will dismantle top cover, the line also must dismantled in termination when replacing with step bearing exactly, causes secondary failure.
4, the utility model is owing to scribbling thermal conductive material layer outside stator, faster than traditional casing heat transfer rate, be conducive to stator heat radiation, during work, the temperature rise ratio conventional construction of motor declines 5 ~ 10 DEG C, improve heat-transfer coefficient, enhance the heat dissipation potential of motor, improve cool condition, reduce the rate of fault of motor, improve the working life of motor.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art submerged pump.
Fig. 2 is the structural representation of efficient low lift submerged pump of the present utility model.
Fig. 3 is the stator plan view of efficient low lift submerged pump of the present utility model.
Fig. 4 is the stator sectional view of efficient low lift submerged pump of the present utility model.
In Fig. 1,1 is submersible motor, and 1.1 is top covers, and 1.1.1 is wire outlet hole, and 1.2 is casings, and 1.3 is stators, and 2 is outlet line devices, and 3 is volutes, and 3.1 is volute water intakes, and 4 is pump covers, and 5 is impellers, and 5.1 is impeller port rings.
In Fig. 2,1 is submersible motor, and 1.1 is top covers, 1.2 is casings, and 1.2.1 is wire outlet hole, and 1.3 is stators, 1.3.1 be thermal conductive material layer, 1.4 is rotor (axles), and 1.5 is lower end caps, 2 is outlet line devices, and 3 is volutes, and 3.1 is volute water intakes, 4 is pump covers, and 4.1 is pump cover circular arc flow-passing surfaces, and 5 is impellers, 5.1 is impeller port rings, and 5.2 is impeller circular arc back shroud flow-passing surfaces.
In Fig. 3, Fig. 4,1.3 is stator (before not embedding copper cash), and 1.3.1 is Heat Conduction Material.
Embodiment
A kind of efficient low lift submerged pump being applicable to sewage treatment that the utility model proposes by reference to the accompanying drawings and embodiment further illustrate as follows:
The one that the utility model proposes efficient low lift submerged pump example structure, as shown in Figure 2, comprises submersible motor 1, top cover 1.1, casing 1.2, outlet line device 2, volute 3, pump cover 4 and impeller 5, wherein, top cover 1.1 and casing 1.2 front end are bolted and are tightly connected, submersible motor 1 is arranged in casing, pump cover 4 uses Bolt Connection on the rear end cover of submersible motor 1, submersible motor 1 rotor is placed in stator 1.3, submersible motor 1 rotor (axle) 1.4 passes from pump cover 4, impeller 5 key is fastened on rotor shaft, impeller 5 coaxially connects with submersible motor 1, volute 3 is contained on pump cover 4, impeller port ring 5.1 and volute water intake 3.1 are tightly connected, wire outlet hole 1.2.1 is had at casing 1.2 sidewall, outlet line device 2 is connected with wire outlet hole 1.2.1, make the cable outlet of submersible motor by motor side, lower end cap 1.5 is connected with pump cover 4, and pump cover 4 is circular arc flow-passing surface 4.1, and the cover plate of impeller 5 is flow-passing surface 5.2 after circular arc.Described impeller 5, pump cover 4, volute 3 assemble the semiclosed shape overall structure of the round and smooth similar streamline of rear formation.
Specific implementation and the function description of each parts in the present embodiment are as follows:
Submersible motor casing cylindrical has a cylinder type wire outlet hole 1.2.1, for installing link plate, and tie cable line.
Outlet line device 2 is used to fixing and sealed electrical cable for box body, and with bolt seal tight joint on wire outlet hole, the cable outlet of submersible motor is by motor side.
Pump cover 4 flow-passing surface 4.1 adopts circular arc corresponding to the circular arc streamline that back shroud of impeller becomes, and direction is consistent.
Impeller 5 is mixed-flow structure, and back shroud flow-passing surface 5.2 adopts circular arc.
The flow surface cross section of volute 3 is that circular arc type is abnormally-structured, and sectional area increases outward from water inlet gradually to water outlet; Be whirlpool type structure along water (flow) direction, export as D600.
Scribble insulating oil enamelled coating 1.3.1 outside submersible motor stator 1.3, as shown in Figure 3,4 (what show in figure is stator before not embedding copper cash), to fill the gap between stator and casing, improve heat-transfer coefficient, strengthen the heat dissipation potential of motor.Submersible motor coaxially connects with water pump, and water pump is positioned at motor lower portion.
The performance test of described efficient low lift submerged pump shows, water pump rated head down-off Q
nfor 5400m
3, lift H under rated flow
nfor 3.74m, rated shaft power P
nfor 73.8kW, pump efficiency η
sPbe 70.82%.
Claims (6)
1. an efficient low lift submerged pump, comprises submersible motor, outlet line device, volute, pump cover and impeller, described submersible motor is made up of top cover, casing, stator, rotor and lower end cap, stator press-loading in casing, top cover and casing upper end Bolt Connection, casing lower end and lower end cap Bolt Connection, rotor is contained in stator interior, connect with top and lower end cap with bearing respectively, a wire outlet hole is opened in position on lower side in the outer garden of casing, outlet line device connects with wire outlet hole and forms submersible motor, it is characterized in that, pump cover Bolt Connection is on the lower end cap of submersible motor, diving generator rotor axle passes from pump cover, impeller key is fastened on rotor shaft, volute bolt is contained on pump cover, impeller port ring is connected with volute inlet seal, impeller coaxially connects with submersible motor, described impeller, pump cover, the semiclosed shape overall structure of round and smooth similar streamline is formed after volute assembling.
2. efficient low lift submerged pump as claimed in claim 1, is characterized in that: described wire outlet hole is in the bottom of casing cylindrical, and outlet box is contained on wire outlet hole, and the cable outlet of submersible motor is by motor side.
3. efficient low lift submerged pump as claimed in claim 1, is characterized in that: scribble thermal conductive material layer outside described submersible motor stator.
4. efficient low lift submerged pump as claimed in claim 3, is characterized in that: outside described submersible motor stator, thermal conductive material layer is insulating oil enamelled coating.
5. efficient low lift submerged pump as claimed in claim 1, is characterized in that: flow-passing surface and the back shroud of impeller of described pump cover become corresponding circular arc streamline, and direction is consistent.
6. efficient low lift submerged pump as claimed in claim 1, it is characterized in that: described impeller is mixed-flow structure, and back shroud flow-passing surface is arc line type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520954245.8U CN205225767U (en) | 2015-11-25 | 2015-11-25 | High -efficient low lift is dirty pump stealthily |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520954245.8U CN205225767U (en) | 2015-11-25 | 2015-11-25 | High -efficient low lift is dirty pump stealthily |
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| Publication Number | Publication Date |
|---|---|
| CN205225767U true CN205225767U (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520954245.8U Active CN205225767U (en) | 2015-11-25 | 2015-11-25 | High -efficient low lift is dirty pump stealthily |
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| CN (1) | CN205225767U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257557A (en) * | 2015-11-25 | 2016-01-20 | 湘潭金阳电机泵业有限公司 | Efficient low-lift submersible sewage pump |
-
2015
- 2015-11-25 CN CN201520954245.8U patent/CN205225767U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257557A (en) * | 2015-11-25 | 2016-01-20 | 湘潭金阳电机泵业有限公司 | Efficient low-lift submersible sewage pump |
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