CN203272159U - Through-flow submersible electric pump - Google Patents
Through-flow submersible electric pump Download PDFInfo
- Publication number
- CN203272159U CN203272159U CN 201320308548 CN201320308548U CN203272159U CN 203272159 U CN203272159 U CN 203272159U CN 201320308548 CN201320308548 CN 201320308548 CN 201320308548 U CN201320308548 U CN 201320308548U CN 203272159 U CN203272159 U CN 203272159U
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- front cover
- rear end
- end cover
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Abstract
The utility model relates to a through-flow submersible electric pump which comprises a cylindrical pump body with the two ends communicated, an impeller and a motor. The motor comprises a supporting shaft, the middle portion of the supporting shaft is provided with a stator in a sleeved mode, the stator is provided with a rotor in a sleeved mode, and namely an outer rotor structure is adopted. The two axial ends of the rotor are respectively and fixedly connected with a front end cover and a rear end cover. A bearing is arranged between the front end cover and the supporting shaft through a bearing base. A bearing is also arranged between the rear end cover and the supporting shaft through a bearing base. The end portion of the outer side of the front end cover is connected with a wheel shaft of the impeller. The wheel shaft of the impeller is a hollow shaft arranged on the supporting shaft in a sleeved mode. The two ends of the supporting shaft are respectively fixed in the pump body and are coaxial with the pump body. By the adaptation of the outer rotor structure, the through-flow submersible electric pump eliminates a main case of a traditional submersible motor and a gear reducer, improves manufacturing precision, is impact in structure and saves a great number of manufacturing cost as the gear reducer and the main case do not need to be used.
Description
Technical field
The utility model belongs to the Submerged Motor Pumps technical field, is specifically related to a kind of through-flow Submerged Motor Pumps.
Background technique
The horizontal installation of the many employings of through-flow Submerged Motor Pumps has the characteristics of the straight perforation of current, and operating conditions is generally large flow low-lift, is widely used in the occasions such as field irrigation, city river ejectment water, flood-fighting.Along with the needs that scientific and technological progress and national basis are built, through-flow pump is to maximization, low lift, large flow, large specific speed development.The mode of the main mode that adopts slow-speed of revolution inner rotor motor and hydraulic part direct connection, and the conventional diving motor of rotating speed between 980-2980rpm at present by using plane table thermoconductivity meter to connect with hydraulic part.Adopt the through-flow pump of Low speed electric motor and hydraulic part associated mode, matching used is all generally the special submersible motor of the slow-revving internal rotor of high number of poles, and radial dimension is very large, the general radial dimension that surpasses water pump vane, make hydraulic radius reduce, increase frictional loss, lower efficiency.Publication number is the Chinese patent of CN201925178 U, a kind of submersed three-flow pump is disclosed, between motor and hydraulic part, planetary reduction gear box is arranged, planetary reduction gear box has housing, planet carrier, sun gear, tooth cover coupling, by planetary reduction gear box, motor and hydraulic part are linked together, can partly reduce the diameter of through-flow pump, increase the efficient of through-flow pump.But planetary reduction gear box belongs to precise part, and machining accuracy is very high, and manufacture cost is high, maintenance difficult.
The model utility content
For the efficient of large torque, reduction hydraulic loss, raising water pump is provided, the utility model provides a kind of through-flow Submerged Motor Pumps that improves structure.
A kind of through-flow Submerged Motor Pumps comprises the pump housing cylindraceous, impeller and the motor that two ends connect, described motor comprises back shaft, the middle part of back shaft is arranged with stator, be arranged with rotor on stator, the axial two ends of rotor are being fixedly connected with respectively front cover and rear end cover, be provided with bearing by bearing support between front cover and back shaft, be provided with bearing by bearing support between rear end cover and back shaft; Middle part, the exterior edge face projection of described front cover is connecting wheel shaft one end of impeller as pump shaft; The wheel shaft of impeller is hollow shaft, and empty set is on back shaft, and the two ends of back shaft are separately fixed in the pump housing, and coaxial with the pump housing.
Described front cover is barrel-shaped cover cap shape, and the edge, exterior edge face of the front cover corresponding with impeller is provided with the groove of annular, and the wheel shaft end interference fit of the impeller that coordinates with front cover is positioned at the groove of front cover; Be arranged with respectively the outer seat of fore bearing and fore bearing inner seat on the back shaft corresponding with front cover, the outer seat of fore bearing is being fixedly connected with in the middle of the exterior edge face of front cover, and the fore bearing inner seat is being fixedly connected with the inner side surface of the outer end of front cover; Be provided with the spherical roller thrust-bearing between the front cover of the outer seat of fore bearing one side and back shaft, be provided with single row roller bearing between the front cover of fore bearing inner seat one side and back shaft; Described rear end cover is barrel-shaped cover cap shape, be arranged with respectively the outer seat of rear bearing and rear bearing inner seat on the back shaft corresponding with rear end cover, the outer seat of rear bearing is being fixedly connected with in the middle of the exterior edge face of rear end cover, the rear bearing inner seat is being fixedly connected with the inner side surface of the outer end of rear end cover, is provided with single row roller bearing between the rear end cover between the outer seat of rear bearing and rear bearing inner seat and back shaft.
On the circumference of stator yoke section uniform offer through shaft to six above vent holes.
Be equipped with mechanical seal between the outer seat of described fore bearing and back shaft or between the outer seat of rear bearing and back shaft, form movable sealing structure.
The rear end cover inwall of a side corresponding to rotor is provided with a ring baffle, all lays stiffening rib on the rear end cover inwall of opposite side.
Useful technique effect of the present utility model embodies in the following areas:
1. the utility model adopts outer-rotor structure, has removed the casing of traditional submersible motor, has removed gear reducer, has reduced accuracy of manufacturing; Need not use gear reducer and casing to make compact structure, save a large amount of manufacture costs;
2. the outer seat of motor bearings at both ends inner chamber all adopts movable sealing structure, specifically adopts mechanical seal, has guaranteed the sealing that motor is good, makes motor to move under water;
Because of the stator empty set on back shaft, make motor internal form the empty inner cold system of self-loopa, guaranteed the temperature rise of submersible motor, make submersible motor when operation, motor be damaged;
4. stiffening rib is stamped in the rear end of motor, has guaranteed the rigidity of rear end cover necessity when rotating with rotor of motor, has improved motor Operation safety energy.
Description of drawings
Fig. 1 is the utility model through-flow Submerged Motor Pumps structural representation.
Fig. 2 is electric machine structure schematic diagram in Fig. 1.
Fig. 3 is front cover and impeller connection schematic diagram in Fig. 1.
Fig. 4 is the partial enlarged drawing at front cover and back shaft place in Fig. 2.
Fig. 5 is the partial enlarged drawing at rear end cover and back shaft place in Fig. 2.
Fig. 6 is the radial cross-section of stator core in Fig. 2.
Sequence number in upper figure: 1 impeller, 2 submersible motors, 21 mechanical seals, 22, the outer seat of fore bearing, 23 spherical roller thrust-bearings, 24 single row roller bearings, 25 fore bearing inner seats, 26 front covers, 27 rotors, 28 stators, 29 back shafts, 210 baffle plates, 211 rear end covers, 212 stiffening ribs, 3 pump housings, 4 cables, the outer seat of 5 rear bearings, 6 rear bearing inner seats, 7 vent holes.
Embodiment
Below in conjunction with accompanying drawing, by embodiment, the utility model is done to describe further.
Referring to Fig. 1, a kind of through-flow Submerged Motor Pumps comprises the pump housing cylindraceous 3, impeller 1 and the submersible motor 2 that two ends connect.Referring to Fig. 2, motor comprises back shaft 29, and the middle part of back shaft 29 is set with stator 28, on the circumference of stator 28 yoke sections uniform offer through shaft to ten vent holes 7, see Fig. 6.Be arranged with rotor 27 on stator 28, the axial two ends of rotor 27 are being fixedly connected with respectively front cover 26 and rear end cover 211, middle part, the exterior edge face projection of front cover 26 is as pump shaft, wheel shaft one end that is connecting impeller, see Fig. 3, remove coupling, made compact structure, reduced manufacturing and maintenance cost.The wheel shaft of impeller 1 is hollow shaft, and empty set is on back shaft 29, and the two ends of back shaft 29 are separately fixed in the pump housing 3, and coaxial with the pump housing 3.Referring to Fig. 3 and Fig. 4, front cover 26 is barrel-shaped cover cap shape, and the edge, exterior edge face of the front cover 26 corresponding with impeller is provided with the groove of annular, and the wheel shaft end interference fit of the impeller 1 that coordinates with front cover 26 is positioned at the groove of front cover 26; Be respectively installed with the outer seat 22 of fore bearing and fore bearing inner seat 25 on the back shaft 29 corresponding with front cover 26, the outer seat 22 of fore bearing is being fixedly connected with in the middle of the exterior edge face of front cover 26, and fore bearing inner seat 25 is being fixedly connected with the inner side surface of the outer end of front cover 26; Between the front cover 26 of the outer seat of fore bearing 22 1 sides and back shaft 29, spherical roller thrust-bearing 23 is installed, between the front cover 26 of fore bearing inner seat 26 1 sides and back shaft 29, single row roller bearing 24 is installed.Referring to Fig. 5, rear end cover 211 is barrel-shaped cover cap shape, be respectively installed with the outer seat 5 of rear bearing and rear bearing inner seat 6 on the back shaft 29 corresponding with rear end cover 211, the outer seat 5 of rear bearing is being fixedly connected with in the middle of the exterior edge face of rear end cover, rear bearing inner seat 6 is being fixedly connected with the inner side surface of the outer end of rear end cover 211, between the rear end cover 211 between the outer seat 5 of rear bearing and rear bearing inner seat 6 and back shaft 29, single row roller bearing is installed.Between the outer seat 22 of fore bearing and back shaft 29 or between the outer seat 5 of rear bearing and back shaft 29, mechanical seal 21 is installed all, forms movable sealing structure.Be provided with the baffle plate 210 of an annular with the rear end cover inwall of the corresponding side of rotor 27, baffle plate 210 has the effect of fan, all lays stiffening rib 212 on the rear end cover inwall of opposite side, has improved the rigidity of rear end cover.
Working principle of the present utility model is as follows:
After the submersible motor energising, produce rotating magnetic field in the winding of stator, rotating magnetic field will produce the main field by air gap, the winding of main field cutting rotor, make and produce three-phase induction electromotive force and three-phase induction electric current in the winding of rotor, air-gap field and rotor current interact and produce electromagnetic torque, make the rotor conrotatory turn magnetic direction and rotate.Rotate together with the front cover that rotor drives with rotor core welds together, will drive the wheel rotation of pump as the front cover of pump shaft use.
As shown in Figure 2: the vent hole 7 of stator yoke section and the air gap between stator 28 rotors 27 consist of the circulating cooling wind path, and during the motor operation, the effect that the baffle plate 210 on the rear end cover 211 of motor serves as blade promotes the circulation of air; The circulating cooling wind path has improved the motor internal temperature rise, and electric machine temperature rise is all taken away by the water that flows through when motor outer rotor rotates by motor outer rotor and front and rear cover, and good cooling results can effectively reduce the temperature rise of motor.
Claims (5)
1. through-flow Submerged Motor Pumps, comprise the pump housing cylindraceous, impeller and motor that two ends connect, it is characterized in that: described motor comprises back shaft, the middle part of back shaft is arranged with stator, be arranged with rotor on stator, the axial two ends of rotor are being fixedly connected with respectively front cover and rear end cover, are provided with bearing by bearing support between front cover and back shaft, are provided with bearing by bearing support between rear end cover and back shaft; Middle part, the exterior edge face projection of described front cover is connecting wheel shaft one end of impeller as pump shaft; The wheel shaft of impeller is hollow shaft, and empty set is on back shaft, and the two ends of back shaft are separately fixed in the pump housing, and coaxial with the pump housing.
2. a kind of through-flow Submerged Motor Pumps according to claim 1, it is characterized in that: described front cover is barrel-shaped cover cap shape, the edge, exterior edge face of the front cover corresponding with impeller is provided with the groove of annular, and the wheel shaft end interference fit of the impeller that coordinates with front cover is positioned at the groove of front cover; Be arranged with respectively the outer seat of fore bearing and fore bearing inner seat on the back shaft corresponding with front cover, the outer seat of fore bearing is being fixedly connected with in the middle of the exterior edge face of front cover, and the fore bearing inner seat is being fixedly connected with the inner side surface of the outer end of front cover; Be provided with the spherical roller thrust-bearing between the front cover of the outer seat of fore bearing one side and back shaft, be provided with single row roller bearing between the front cover of fore bearing inner seat one side and back shaft; Described rear end cover is barrel-shaped cover cap shape, be arranged with respectively the outer seat of rear bearing and rear bearing inner seat on the back shaft corresponding with rear end cover, the outer seat of rear bearing is being fixedly connected with in the middle of the exterior edge face of rear end cover, the rear bearing inner seat is being fixedly connected with the inner side surface of the outer end of rear end cover, is provided with single row roller bearing between the rear end cover between the outer seat of rear bearing and rear bearing inner seat and back shaft.
3. a kind of through-flow Submerged Motor Pumps according to claim 1 is characterized in that: on the circumference of stator yoke section uniform offer through shaft to six above vent holes.
4. according to claim 2 or 3 described a kind of through-flow Submerged Motor Pumpss, is characterized in that: be equipped with mechanical seal between the outer seat of described fore bearing and back shaft or between the outer seat of rear bearing and back shaft, form movable sealing structure.
5. a kind of through-flow Submerged Motor Pumps according to claim 1 and 2, it is characterized in that: the rear end cover inwall of a side corresponding to rotor is provided with a ring baffle, all lays stiffening rib on the rear end cover inwall of opposite side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320308548 CN203272159U (en) | 2013-05-31 | 2013-05-31 | Through-flow submersible electric pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320308548 CN203272159U (en) | 2013-05-31 | 2013-05-31 | Through-flow submersible electric pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203272159U true CN203272159U (en) | 2013-11-06 |
Family
ID=49502586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320308548 Withdrawn - After Issue CN203272159U (en) | 2013-05-31 | 2013-05-31 | Through-flow submersible electric pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203272159U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277320A (en) * | 2013-05-31 | 2013-09-04 | 合肥恒大江海泵业股份有限公司 | Through-flow submersible electric pump |
| CN104037967A (en) * | 2014-06-20 | 2014-09-10 | 合肥恒大江海泵业股份有限公司 | Medium-to-large submerged motor capable of reinforcing rotor cooling |
| CN106837816A (en) * | 2017-02-16 | 2017-06-13 | 合肥恒大江海泵业股份有限公司 | A kind of outer rotor submersed three-flow pump |
| CN112701827A (en) * | 2020-12-29 | 2021-04-23 | 合肥恒大江海泵业股份有限公司 | Permanent-magnet outer rotor submersible electric pump |
-
2013
- 2013-05-31 CN CN 201320308548 patent/CN203272159U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277320A (en) * | 2013-05-31 | 2013-09-04 | 合肥恒大江海泵业股份有限公司 | Through-flow submersible electric pump |
| CN103277320B (en) * | 2013-05-31 | 2016-04-27 | 合肥恒大江海泵业股份有限公司 | A kind of through-flow submersible electric pump |
| CN104037967A (en) * | 2014-06-20 | 2014-09-10 | 合肥恒大江海泵业股份有限公司 | Medium-to-large submerged motor capable of reinforcing rotor cooling |
| CN106837816A (en) * | 2017-02-16 | 2017-06-13 | 合肥恒大江海泵业股份有限公司 | A kind of outer rotor submersed three-flow pump |
| CN106837816B (en) * | 2017-02-16 | 2019-03-22 | 合肥恒大江海泵业股份有限公司 | A kind of outer rotor submersed three-flow pump |
| CN112701827A (en) * | 2020-12-29 | 2021-04-23 | 合肥恒大江海泵业股份有限公司 | Permanent-magnet outer rotor submersible electric pump |
| CN112701827B (en) * | 2020-12-29 | 2022-01-11 | 合肥恒大江海泵业股份有限公司 | Permanent-magnet outer rotor submersible electric pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131106 Effective date of abandoning: 20160427 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |