CN205207206U - Miniature pump integral type magnetic drive pump based on axial motor drive - Google Patents
Miniature pump integral type magnetic drive pump based on axial motor drive Download PDFInfo
- Publication number
- CN205207206U CN205207206U CN201520982617.8U CN201520982617U CN205207206U CN 205207206 U CN205207206 U CN 205207206U CN 201520982617 U CN201520982617 U CN 201520982617U CN 205207206 U CN205207206 U CN 205207206U
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- Prior art keywords
- pump
- impeller
- stator
- magnetic drive
- bulge loop
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Abstract
The utility model provides a miniature pump integral type magnetic drive pump based on axial motor drive, includes pump case, impeller, pump cover, stator unit, motor cover board, first bush, second bush, permanent magnet, stator axle, the one end and the impeller connection of stator axle, the other end fix on the motor cover board, the impeller dorsal part is equipped with big bulge loop and little bulge loop, installs the permanent magnet on the outer terminal surface of big bulge loop, stator unit installs at the stator epaxially, and stator yoke among the stator unit and winding and permanent magnet are corresponding, being equipped with first bush on the pump inner surface of the cover, being equipped with the second bush on the surface of big bulge loop, the second bush is corresponding with first bush, the flange and the little bulge loop of first bush, second bush, stator axle fall into high, medium and low three pressure chamber with the back space of impeller jointly. The utility model discloses in, impeller and the integration of permanent magnet rotor have reduced the drive disk assembly in an organic whole, have reduced the magnetic drive pump volume, have reduced magnetic drive pump weight, dorsal high pressure chest of impeller and middling pressure chamber make the axial force of impeller offset.
Description
Technical field
The utility model relates to a kind of magnetic drive pump, particularly a kind of miniature pump integral type magnetic drive pump driven based on axial direction electric machine.
Background technique
As a kind of no-leakage pump, magnetic drive pump is widely used in the pumping carrying out non-aqueous media in the fields such as medicine, chemical industry, petrochemical industry.
Existing magnetic drive pump often by motor, magnetic driver and pump three part form, wherein, magnetic driver is made up of outer magnet rotor, interior magnet rotor and non-magnetic separation sleeve; Interior magnet rotor is connected with pump rotor, is positioned at the confined space of separation sleeve and pump housing formation; Outer magnet rotor is connected with rotor, is positioned at outside separation sleeve; Separation sleeve changes motive sealing into static seal, and non-aqueous media can not leak.In this magnetic drive pump, rotor power passes to pump rotor by magnetic driver, and integrality is not strong, take up room, and weight is larger.
Along with the development of society and the technology upgrading of every field, the requirement of people to magnetic drive pump is also more and more higher, and large, the bulky magnetic drive pump of existing weight has been difficult to the demand meeting people.In order to solve large, the bulky problem of existing magnetic drive pump weight, a lot of pertinent literature is had in succession to be disclosed.As document CN104153999A discloses a kind of pump integrated micro high-speed magnetic pump, by the back shroud external peripheral surface at impeller, permanent magnet is installed, make permanent magnet and staor winding form radial motor, thus realize motor-and-pump integrated, to reduce volume and the weight of magnetic drive pump.But because this magnetic drive pump is arranged on the back shroud of impeller by permanent magnet, thus need the back shroud of impeller to have certain length, otherwise cannot permanent magnet be settled.The length of back shroud of impeller can govern the volume of whole magnetic drive pump, so the magnetic drive pump disclosed in document CN104153999A cannot from the volume reducing magnetic drive pump to the full extent.And if directly permanent magnet is arranged on the dorsal part of impeller, form axial motor with stator, then back shroud of impeller can be avoided the restriction of magnetic drive pump volume, thus from reducing the weight and volume of magnetic drive pump to a greater extent.
But, directly permanent magnet is arranged on the dorsal part of impeller, this scheme of axial motor is formed with stator, although the object reducing magnetic drive pump volume and weight can be realized, but impeller move time owing to being subject to axial electromagnetic force, can be moved/tilt to the direction of stator, greatly reduce the stability of motions of impeller.
Model utility content
The purpose of this utility model is, in order to overcome the above-mentioned deficiency of prior art, provides the miniature pump integral type magnetic drive pump driven based on axial direction electric machine that a kind of volume is little, lightweight, impeller is stable.
To achieve these goals, the technological scheme that the utility model adopts is: a kind of miniature pump integral type magnetic drive pump driven based on axial direction electric machine, comprises pump case, impeller, pump cover, stator unit, motor cover plate, the first lining, the second lining, permanent magnet, stator axis; Impeller is arranged in pump case, and the outside of pump case is provided with pump cover, and the outside of pump cover is provided with motor cover plate; One end of stator axis is connected with impeller, and the other end is fixed on motor cover plate; Impeller dorsal part is provided with large bulge loop and little bulge loop, and the exterior edge face of little bulge loop large bulge loop between large bulge loop and impeller root is provided with permanent magnet; Stator unit is arranged in stator axis, and the stator yoke in stator unit is corresponding with permanent magnet with winding; Pump cover internal surface is provided with the first lining, and the outer surface of large bulge loop is provided with the second lining, and the second lining is corresponding with the first lining; The back space of impeller is divided into high, medium and low three pressure chambers by the flange of the first lining, the second lining, stator axis and little bulge loop jointly, and low-pressure cavity is connected with the return port of impeller root circumference.
Further, the exterior edge face of described large bulge loop is provided with annular groove; Permanent magnet is fixedly mounted in annular groove.
Further, a kind of miniature pump integral type magnetic drive pump driven based on axial direction electric machine, also comprises driving plate and dividing plate; Dividing plate is arranged on the inner side of stator unit, contacts with pump cover; Described dividing plate, stator axis, pump cover and motor cover plate makeup ring shape confined space; Stator unit and driving plate are positioned at described closed containing cavity.
Further, described stator yoke is formed by silicon steel plate stacking, and winding is wound in the yoke portion of stator yoke; Stator yoke and winding are around the distribution of stator axis circumference.
Further, described stator axis is secured by bolts on motor cover plate.
Further, described dividing plate, stator unit and driving plate are axially arranged in order along stator axis.
Further, between described pump cover and pump case, seal ring is provided with between dividing plate and pump cover and between dividing plate and stator axis.
Further, the back of described pump case is provided with the joint with pump cover and motor cover plate; Pump cover and motor cover plate are bolted on joint.
Further, described joint is cylinder shape groove; The edge of joint has abducent flange.
Principle of the present utility model is: the yoke in the annular groove of impeller dorsal part large bulge loop exterior edge face in permanent magnet and stator unit and coil form axial direction electric machine; Axial direction electric machine can axially rotate thus produce peripheral force, and impeller rotates under the effect of peripheral force.This mode, is dorsal part permanent magnet being directly installed to impeller, thus does not need the back shroud of impeller described in document CN104153999A, thus makes the size of magnetic drive pump less; Further, impeller and the permanent magnet composition magnet rotor being embedded in the large bulge loop exterior edge face of impeller dorsal part, stator unit, driving plate and motor cover plate composition motor stationary unit; Magnet rotor possesses motor rotor part and magnetic drive pump rotor part simultaneously, thus decreases transmission part, improves conversion efficiency, decreases axial length, decreases magnetic drive pump volume and weight, achieves motor-and-pump integrated.
Permanent magnet is directly installed on impeller dorsal part, forms axial direction electric machine with the yoke in stator unit and coil and then can cause impeller when moving owing to being subject to axial electromagnetic force, can be moved/tilt to the direction of stator; In order to address this problem, impeller back space is separated into high, medium and low three pressure chambers by the throttle chink between the first lining and the second lining and the throttle chink between stator axis and the little bulge loop of impeller dorsal part, owing to there is larger pressure in high pressure chamber and middle pressure chamber, can pressure on front side of the axially loaded that provides to impeller of balancing axial motor and impeller effectively, reduce axial force of impeller and impact.
Dividing plate, stator axis and the pump cover isolation pump housing and motor stationary unit, make liquid not enter motor electronic winding, mechanical seal (motive sealing) become seal ring standstill seal.
The utility model compared with prior art has following features:
1. volume is little, lightweight; Permanent magnet is directly installed to the dorsal part of impeller by the utility model, makes the size of magnetic drive pump less; Further, impeller and the permanent magnet composition magnet rotor being embedded in the large bulge loop exterior edge face of impeller dorsal part, stator unit, driving plate and motor cover plate composition motor stationary unit; Magnet rotor possesses motor rotor part and magnetic drive pump rotor part simultaneously, decreases transmission part, improves conversion efficiency, decrease axial length, decreases magnetic drive pump volume and weight, achieves motor-and-pump integrated;
2. impeller is stable; Impeller back space is separated into high, medium and low three pressure chambers by the throttle chink between the first lining and the second lining and the throttle chink between stator axis and the little bulge loop of impeller dorsal part, owing to there is larger pressure in high pressure chamber and middle pressure chamber, can pressure on front side of the axially loaded that provides to impeller of balancing axial motor and impeller effectively, reduce axial force of impeller to impact, ensure that the stability that impeller runs.
Below in conjunction with the drawings and specific embodiments, detailed construction of the present utility model is further described.
Accompanying drawing explanation
Fig. 1-be structural representation of the present utility model.
In figure: 1-pump case, 2-impeller, 3-pump cover, 4-stator unit, 5-motor cover plate, 6-driving plate, 7-first lining, 8-second lining, 9-permanent magnet, 10-dividing plate, 11-stator axis, 12-nut, 13-pump inlet, 14-pump discharge, 15-joint, 16-stator yoke, 17-winding, 2 '-large bulge loop, 2 ' '-little bulge loop.
Embodiment
As shown in the figure, a kind of miniature pump integral type magnetic drive pump driven based on axial direction electric machine, it is characterized in that, comprise pump case 1, impeller 2, pump cover 3, stator unit 4, motor cover plate 5, driving plate 6, first lining 7, second lining 8, permanent magnet 9, dividing plate 10, stator axis 11, large bulge loop 2 ' exterior edge face has annular groove, and annular groove internal fixtion is provided with permanent magnet 9; Impeller 2 is connected with described stator axis 11 with bearing by nut, prevents impeller 2 toward importer to vibration, rotates around stator axis 11 simultaneously; Dividing plate 10, stator axis 11, pump cover 3 and motor cover plate 5 form annular sealed space, and stator unit 4 and driving plate 6 are positioned at described closed containing cavity, in stator unit 4 stator yoke 16 and winding 17 corresponding with permanent magnet 9, and around stator axis 11 circumference distribution; The back of pump case 1 has the joint with pump cover 3 and motor cover plate 5, and pump cover 3 and motor cover plate 5 are bolted on described joint.Pump cover 3 internal surface is provided with the first lining 7, and it is corresponding with the first lining 7 that the outer surface of large bulge loop 2 ' is provided with the second lining 8, second lining 8;
The conveying liquid of described Micro magnetic driving pump is isolated by dividing plate 10, makes liquid not enter motor stator unit 4, changes motive sealing into static seal.
Throttle chink between first lining 7 and the second lining 8 and flange 11 ' and little bulge loop 2 " between throttle chink impeller back space is divided into high, medium and low three pressure chambers, low-pressure cavity is connected with the return port of impeller 2 root circumference.Impeller 2 back side pressure chamber, can the axially loaded that provides to impeller 2 of balancing axial motor effectively, and pressure on front side of impeller 2, reduces impeller 2 axial force and impacts.
Stator yoke 16 is formed by silicon steel plate stacking, and winding 17 is wound in the yoke portion of stator yoke 16; Stator yoke 16 and winding 17 are around the distribution of stator axis 11 circumference.
Stator axis 11 is secured by bolts on motor cover plate 5.
Dividing plate 10, stator unit 4 and driving plate 6 are axially arranged in order along stator axis 11.
Seal ring is provided with between pump cover 3 and pump case 1, between dividing plate 10 and pump cover 3 and between dividing plate 10 and stator axis 11.
The back of pump case 1 is provided with the joint 15 with pump cover 3 and motor cover plate 5; Pump cover 3 and motor cover plate 5 are bolted on joint 15.
Joint 15 is cylinder shape groove; The edge of joint 15 has abducent flange.
During work, the alternating current of driving plate 6 forms a rotating magnetic field around stator axis 11 geometry axle center on the left of stator unit 4, and on the left of rotating magnetic field driving dividing plate 10, permanent magnet 9 rotates, permanent magnet 9 impeller 2 synchronous rotary.Stator axis 11 pairs of impellers 2 play axially and radial positioning action, ensure the normal rotation of impeller 2, and so simultaneously, fluid flows to from pump inlet 13, after supercharging, flows out from pump discharge 14.
Obviously, those skilled in the art can carry out various change and modification to the utility model and not depart from spirit and scope of the present utility model.Like this, if these amendments of the present utility model and modification belong within the scope of the utility model claim and equivalent technology thereof, then the utility model is also intended to comprise these change and modification.
Claims (9)
1., based on the miniature pump integral type magnetic drive pump that axial direction electric machine drives, comprise pump case (1), impeller (2), pump cover (3), stator unit (4), motor cover plate (5), the first lining (7), the second lining (8), permanent magnet (9), stator axis (11); Impeller (2) is arranged in pump case (1), and the outside of pump case (1) is provided with pump cover (3), and the outside of pump cover (3) is provided with motor cover plate (5); It is characterized in that: one end of stator axis (11) is connected with impeller (2), the other end is fixed on motor cover plate (3); Impeller (2) dorsal part is provided with large bulge loop (2 ') and little bulge loop (2 ' '), and little bulge loop (2 ' ') be positioned between large bulge loop (2 ') and impeller root; The exterior edge face of large bulge loop (2 ') is provided with permanent magnet (9); Stator unit (4) is arranged in stator axis (11), the stator yoke (16) in stator unit (4) and winding (17) corresponding with permanent magnet (9); Pump cover (3) internal surface is provided with the first lining (7), and the outer surface of large bulge loop (2 ') is provided with the second lining (8), and the second lining (8) is corresponding with the first lining (7); The flange (11 ') of the first lining (7), the second lining (8), stator axis (11) and little bulge loop (2 ") jointly the back space of impeller (2) is divided into high, medium and low three pressure chambers, low-pressure cavity is connected with the return port of impeller (2) root circumference.
2., as claimed in claim 1 based on the miniature pump integral type magnetic drive pump that axial direction electric machine drives, it is characterized in that: the exterior edge face of described large bulge loop (2 ') is provided with annular groove; Permanent magnet (9) is fixedly mounted in annular groove.
3., as claimed in claim 1 or 2 based on the miniature pump integral type magnetic drive pump that axial direction electric machine drives, it is characterized in that: also comprise driving plate (6) and dividing plate (10); Dividing plate (10) is arranged on the inner side of stator unit (4), contacts with pump cover (3); Described dividing plate (10), stator axis (11), pump cover (3) and motor cover plate (5) composition annular sealed space; Stator unit (4) and driving plate (6) are positioned at described closed containing cavity.
4., as claimed in claim 3 based on the miniature pump integral type magnetic drive pump that axial direction electric machine drives, it is characterized in that: described stator yoke (16) is formed by silicon steel plate stacking, winding (17) is wound in the yoke portion of stator yoke (16); Stator yoke (16) and winding (16) are around the distribution of stator axis (11) circumference.
5., as claimed in claim 1 or 2 based on the miniature pump integral type magnetic drive pump that axial direction electric machine drives, it is characterized in that: described stator axis (11) is secured by bolts on motor cover plate (5).
6. as claimed in claim 3 based on the miniature pump integral type magnetic drive pump that axial direction electric machine drives, it is characterized in that: described dividing plate (10), stator unit (4) and driving plate (6) are axially arranged in order along stator axis (11).
7., as claimed in claim 3 based on the miniature pump integral type magnetic drive pump that axial direction electric machine drives, it is characterized in that: between described pump cover (3) and pump case (1), between dividing plate (10) and pump cover (3) and between dividing plate (10) and stator axis (11), be provided with seal ring.
8., as claimed in claim 1 or 2 based on the miniature pump integral type magnetic drive pump that axial direction electric machine drives, it is characterized in that: the back of described pump case (1) is provided with the joint (15) with pump cover (3) and motor cover plate (5); Pump cover (3) and motor cover plate (5) are bolted on joint (15).
9., as claimed in claim 8 based on the miniature pump integral type magnetic drive pump that axial direction electric machine drives, it is characterized in that: described joint (15) is cylinder shape groove; The edge of joint (15) has abducent flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520982617.8U CN205207206U (en) | 2015-12-02 | 2015-12-02 | Miniature pump integral type magnetic drive pump based on axial motor drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520982617.8U CN205207206U (en) | 2015-12-02 | 2015-12-02 | Miniature pump integral type magnetic drive pump based on axial motor drive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205207206U true CN205207206U (en) | 2016-05-04 |
Family
ID=55844929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520982617.8U Expired - Fee Related CN205207206U (en) | 2015-12-02 | 2015-12-02 | Miniature pump integral type magnetic drive pump based on axial motor drive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205207206U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298865A (en) * | 2015-12-02 | 2016-02-03 | 湖南机电职业技术学院 | Integrated magnetic pump of micro pump driven on basis of axial motor |
| CN107332368A (en) * | 2017-07-26 | 2017-11-07 | 大连碧蓝节能环保科技有限公司 | Drainage pump of washing machine electric motor combined-type stator |
| CN113187758A (en) * | 2021-06-22 | 2021-07-30 | 晋江爱家制冷设备有限公司 | Impeller axial force counteracts and balancing unit |
| CN113883084A (en) * | 2021-09-01 | 2022-01-04 | 浙江大学 | Automatic axial force balancing device of magnetic suspension centrifugal pump under high-power working condition and application |
| JP2022511021A (en) * | 2018-12-04 | 2022-01-28 | ゲイツ コーポレイション | Axial magnetic flux motor water pump |
-
2015
- 2015-12-02 CN CN201520982617.8U patent/CN205207206U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298865A (en) * | 2015-12-02 | 2016-02-03 | 湖南机电职业技术学院 | Integrated magnetic pump of micro pump driven on basis of axial motor |
| CN107332368A (en) * | 2017-07-26 | 2017-11-07 | 大连碧蓝节能环保科技有限公司 | Drainage pump of washing machine electric motor combined-type stator |
| JP2022511021A (en) * | 2018-12-04 | 2022-01-28 | ゲイツ コーポレイション | Axial magnetic flux motor water pump |
| JP7180925B2 (en) | 2018-12-04 | 2022-11-30 | ゲイツ コーポレイション | axial flux motor water pump |
| CN113187758A (en) * | 2021-06-22 | 2021-07-30 | 晋江爱家制冷设备有限公司 | Impeller axial force counteracts and balancing unit |
| CN113187758B (en) * | 2021-06-22 | 2022-06-07 | 晋江爱家制冷设备有限公司 | Impeller axial force counteracts and balancing unit |
| CN113883084A (en) * | 2021-09-01 | 2022-01-04 | 浙江大学 | Automatic axial force balancing device of magnetic suspension centrifugal pump under high-power working condition and application |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160504 Termination date: 20171202 |