Rotor pump motor

Abstract

The invention relates to the technical field of motors, in particular to a rotor pump motor which comprises a motor shell, the front end of the motor shell is connected with a motor front cover, the rear end of the motor shell is connected with a motor rear cover, an isolation inner container is arranged in the motor shell, a front containing cavity is formed between the isolation inner container and the motor front cover, and a rear containing cavity is formed between the isolation inner container and the motor rear cover. The front containing cavity and the rear containing cavity are separated through an isolation inner container, a rotor is arranged in the front containing cavity, a stator is arranged in the rear containing cavity, the rotor and the stator are separated through the isolation inner container, the stator comprises a stator iron core, a rotor installation groove is formed in the middle of the stator iron core, the isolation inner container is embedded into the rotor installation groove, and the rotor is located in the rotor installation groove. And the rotor and the rotor mounting groove are separated by an isolation liner. Compared with the prior art, the rotor pump motor provided by the invention can be applied to a liquid use scene without a complex waterproof structure, the stator side isolates liquid, the service life is relatively long, and if defects exist, the rotor pump motor can be disassembled for maintenance, and the use cost is low.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and particularly to a rotor pump motor.

Background Art

[0002] In the prior art, there are many motors applied to liquid scenarios. Due to the existence of the stator, winding, and driving device of the motor, the waterproof problem of the motor needs to be considered. Usually, a waterproof oil seal is added at the motor shaft end. The essence of the motor working is that the motor shaft drives the load to work. There is friction between the motor shaft and the waterproof oil seal. Especially when the motor is running at a high speed, the waterproof oil seal may leak water, or after a long time, the waterproof oil seal loses its waterproof effect, the motor is corroded, and its service life is poor.

[0003] In addition, the motor stator and driving part can also be potted with potting glue. The whole motor can be placed in liquid for work, but generally, potting is irreversible and the process is complex. If there are defects after the motor is potted, it cannot be repaired and can only be scrapped as a whole, resulting in high manufacturing costs.

Summary of the Invention

[0004] In order to overcome the above problems, the present invention provides a rotor pump motor that can effectively solve the above problems.

[0005] A technical solution provided by the present invention to solve the above technical problems is: to provide a rotor pump motor, including a motor housing, a motor front cover is connected to the front end of the motor housing, and a motor rear cover is connected to the rear end of the motor housing; an isolation inner tank is arranged inside the motor housing, a front accommodation cavity is formed between the isolation inner tank and the motor front cover, a rear accommodation cavity is formed between the isolation inner tank and the motor rear cover, and the front accommodation cavity and the rear accommodation cavity are separated by the isolation inner tank; a rotor is arranged in the front accommodation cavity, a stator is arranged in the rear accommodation cavity, and the rotor and the stator are separated by the isolation inner tank; the stator includes a stator core, a rotor installation groove is arranged in the middle of the stator core, the isolation inner tank is embedded in the rotor installation groove, the rotor is located in the rotor installation groove, and the rotor and the rotor installation groove are separated by the isolation inner tank.

[0006] Preferably, the wall thickness of the isolation inner tank is between 0.3 mm and 0.6 mm.

[0007] Preferably, the wall thickness of the isolation inner tank is 0.5 mm.

[0008] Preferably, the isolation inner tank is made of plastic.

[0009] Preferably, the rotor pump motor includes a pump head and a rotor pump mounting sleeve. The rotor pump mounting sleeve is locked to the motor housing by screws, and the pump head is locked to the rotor pump mounting sleeve by screws. The motor front cover is located between the pump head and the motor housing. The rotor includes a motor shaft, and one end of the motor shaft extends out from the motor front cover and extends into the pump head.

[0010] Preferably, a central gear and a rotor sleeve are arranged in the pump head. The center of the central gear is connected to one end of the motor shaft. The rotor sleeve is sleeved outside the central gear. The rotor sleeve and the central gear are eccentrically arranged. The rotation of the motor shaft drives the central gear to rotate, and the rotation of the central gear drives the rotor sleeve to rotate. There is a gap between the rotor sleeve and the central gear.

[0011] Preferably, a front sealing ring is arranged at the connection between the pump head and the rotor pump mounting sleeve, and a rear sealing ring is arranged at the connection between the rotor pump mounting sleeve and the motor housing.

[0012] Preferably, a first motor shaft sleeve is arranged in the pump head, a second motor shaft sleeve is arranged in the motor front cover, and a third motor shaft sleeve is arranged in the motor housing. The motor shaft passes through the first motor shaft sleeve, the second motor shaft sleeve, and the third motor shaft sleeve.

[0013] Preferably, a motor shaft connection hole is arranged at the center of the central gear, and a motor shaft fixing hole is arranged at the side of the central gear. The motor shaft fixing hole is communicated with the motor shaft connection hole. One end of the motor shaft extends into the motor shaft connection hole, and a screw is connected in the motor shaft connection hole to lock the motor shaft.

[0014] Preferably, a motor drive board is arranged between the motor housing and the motor rear cover, and the motor drive board is located in the rear accommodation cavity. Wire frames are respectively arranged on both sides of the stator core. Enameled wires are wound on the wire frames. The enameled wires are connected to the motor drive board, and the motor drive board is installed on the wire frames.

[0015] Compared with the prior art, the rotor pump motor of the present invention can be applied to liquid use scenarios without a complex waterproof structure. The stator side isolates the liquid, and it has a relatively high service life. If there are any defects in the motor, it can be disassembled and repaired, with a relatively low use cost. The motor is convenient to assemble, and the production efficiency and yield are high.

Description of the Drawings

[0016] Figure 1 It is the first three-dimensional view of the rotor pump motor of the present invention;

[0017] Figure 2 It is the second three-dimensional view of the rotor pump motor of the present invention;

[0018] Figure 3 It is the first exploded view of the rotor pump motor of the present invention;

[0019] Figure 4 This is the second explosion diagram of the rotor pump motor of the present invention;

[0020] Figure 5 This is the axial sectional view of the rotor, the front motor cover and the pump head of the rotor pump motor of the present invention;

[0021] Figure 6 This is the axial sectional view of the motor housing of the rotor pump motor of the present invention;

[0022] Figure 7 This is the axial sectional view of the stator of the rotor pump motor of the present invention.

Detailed Implementation Modes

[0023] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with the attached drawings and implementation examples. It should be understood that the specific implementation examples described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only relative positions on the specified views, rather than absolute positions.

[0025] In addition, in the present invention, descriptions such as "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first", "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0026] Please refer to Figures 1 to 7 , the rotor pump motor of the present invention includes a motor housing 13, a front motor cover 12 is connected to the front end of the motor housing 13, and a rear motor cover 14 is connected to the rear end of the motor housing 13.

[0027] An isolation inner liner 131 is provided inside the motor housing 13. A front accommodation cavity 132 is formed between the isolation inner liner 131 and the front motor cover 12. A rear accommodation cavity 133 is formed between the isolation inner liner 131 and the rear motor cover 14. The front accommodation cavity 132 and the rear accommodation cavity 133 are completely separated by the isolation inner liner 131.

[0028] A rotor is provided in the front accommodation cavity 132, and a stator 20 is provided in the rear accommodation cavity 133. The rotor and the stator 20 are completely separated by the isolation inner liner 131.

[0029] The stator 20 includes a stator core 21. A rotor installation groove is provided in the middle of the stator core 21. The isolation inner liner 131 is embedded in the rotor installation groove. The rotor is embedded in the isolation inner liner 131. The front accommodation cavity 132 is located within the isolation inner liner 131, that is, the rotor is located within the rotor installation groove, and the isolation inner liner 131 separates the rotor from the rotor installation groove.

[0030] The wall thickness of the isolation inner liner 131 is between 0.3 mm and 0.6 mm, preferably 0.5 mm, which can ensure the isolation function while the motor still has good performance.

[0031] The motor housing 13 is made of plastic. The isolation inner liner 131 is made of plastic.

[0032] The rotor is treated with waterproofing and can directly contact the liquid, driving the load to rotate in the liquid.

[0033] The stator 20 and the driving part are isolated from the rotor within the motor housing 13, thus isolating the contact with the liquid. The motor has no complex waterproof structure and can be applied to working scenarios related to liquids.

[0034] During the installation of the entire rotor pump motor, the rotor itself rotates independently on the rotor pump side. There is no strong magnetic suction force attracting the stator 20 when installing the rotor, making the installation more convenient and the production efficiency higher.

[0035] The rotor pump motor of the present invention includes a pump head 11 and a rotor pump mounting sleeve 15. The rotor pump mounting sleeve 15 is locked with the motor housing 13 by screws. The pump head 11 is locked with the rotor pump mounting sleeve 15 by screws.

[0036] The motor front cover 12 is located between the pump head 11 and the motor housing 13. The rotor includes a motor shaft 31. One end of the motor shaft 31 extends out of the motor front cover 12 and extends into the pump head 11.

[0037] A central gear 50 and a rotor sleeve 60 are provided in the pump head 11. The center of the central gear 50 is connected to one end of the motor shaft 31. The rotor sleeve 60 is sleeved around the central gear 50. The rotor sleeve 60 and the central gear 50 are eccentrically arranged. When the motor shaft 31 rotates, it drives the central gear 50 to rotate, and the central gear 50 rotates to drive the rotor sleeve 60 to rotate eccentrically.

[0038] There is a gap between the rotor sleeve 60 and the central gear 50. When the central gear 50 rotates to drive the rotor sleeve 60 to rotate eccentrically, it squeezes the liquid flowing between the gaps.

[0039] The pump head 11 is provided with two liquid inlet and outlet ports 111. When one of them is the liquid inlet port, the other is the liquid outlet port. The liquid inlet and outlet ports 111 are related to the motor rotation direction.

[0040] A front sealing ring 16 is provided at the connection between the pump head 11 and the rotor pump mounting sleeve 15, and a rear sealing ring 17 is provided at the connection between the rotor pump mounting sleeve 15 and the motor housing 13, which is conducive to waterproofing.

[0041] A first motor shaft sleeve 41 is provided inside the pump head 11, a second motor shaft sleeve 42 is provided inside the motor front cover 12, a third motor shaft sleeve 43 is provided inside the motor housing 13, and the motor shaft 31 passes through the first motor shaft sleeve 41, the second motor shaft sleeve 42, and the third motor shaft sleeve 43 to ensure smooth rotation of the motor shaft 31.

[0042] A motor drive plate 18 is provided between the motor housing 13 and the motor rear cover 14, and the motor drive plate 18 is located in the rear accommodation cavity 133.

[0043] A motor shaft connection hole 51 is provided at the center of the central gear 50, a motor shaft fixing hole 52 is provided at the side of the central gear 50, the motor shaft fixing hole 52 is communicated with the motor shaft connection hole 51, one end of the motor shaft 31 extends into the motor shaft connection hole 51, and a screw in the motor shaft connection hole 51 locks the motor shaft 31.

[0044] A fixing groove 311 is provided on the side of the motor shaft 31, and the fixing groove 311 corresponds to the position of the motor shaft connection hole 51 for screw locking.

[0045] The rotor includes a rotor core 32, the rotor core 32 is connected to the outside of the motor shaft 31, and a magnet 33 is connected to the outside of the rotor core 32.

[0046] Wire frames 22 are respectively provided on both sides of the stator core 21, enameled wires 23 are wound on the wire frames 22, the enameled wires 23 are connected to the motor drive plate 18, and the motor drive plate 18 is installed on the wire frames 22.

[0047] There is a flat position (fixing groove 311) on the motor shaft 31, the central gear 50 is fixed on the motor shaft 31 by a Kimi screw, there are shaft sleeves on the pump head 11 and the motor front cover 12, and the shaft sleeves provide rotation and support for the motor shaft 31. The rotor core 32 is tightly fitted on the motor shaft 31, and the magnet 33 is pasted on the rotor core 32. The motor rotor is waterproofed and can be immersed in liquid.

[0048] The rotor pump head has a liquid inlet and a liquid outlet. The central gear 50 and the rotor sleeve 60 inside the pump head 11 have an eccentric structure, and there is a gap for accommodating liquid between them. When the motor works, the central gear 50 rotates together with the motor shaft 31, the liquid flows through the liquid inlet to the gap between the central gear 50 and the rotor sleeve 60, the central gear 50 drives the rotor sleeve 60 to rotate, squeezing the liquid in the gap, so that the liquid flows out from the liquid outlet. The motor rotation direction can be changed to make the liquid inlet and outlet swapped.

[0049] A wire holder 22 is installed on the motor stator. After the enameled wire 23 is wound, the motor drive board 18 is installed on the wire holder 22, and the winding is welded to the motor drive board 18, together constituting the stator part of the motor. The stator part is installed in the motor housing 13, and the power cord on the motor drive board 18 is led out from the motor rear cover 14.

[0050] When the rotor pump motor is in use, the liquid inlet and outlet of the pump head 11 are placed in the liquid through a connecting liquid pipe or directly, and the stator drive of the housing is installed outside the liquid without contacting the liquid.

[0051] The rotor pump motor of the present invention is applied to the liquid scenario of the rotor pump, has no complex waterproof structure, is convenient to assemble, and can be disassembled and repaired.

[0052] Compared with the prior art, the rotor pump motor of the present invention can be applied to the liquid use scenario without a complex waterproof structure. The stator side isolates the liquid, has a relatively high service life. If there is a problem with the motor, it can be disassembled and repaired, with a lower use cost. The motor is convenient to assemble, and the production efficiency and yield are high.

[0053] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any modifications, equivalent replacements, and improvements made within the concept of the present invention shall be included in the patent protection scope of the present invention.

Claims

1. Rotor pump motor, characterized in that, It includes a motor housing, with a motor front cover connected to the front end of the motor housing and a motor rear cover connected to the rear end of the motor housing; An isolation inner liner is arranged inside the motor housing. A front accommodation cavity is formed between the isolation inner liner and the motor front cover, and a rear accommodation cavity is formed between the isolation inner liner and the motor rear cover. The front accommodation cavity and the rear accommodation cavity are separated by the isolation inner liner; A rotor is arranged in the front accommodation cavity, and a stator is arranged in the rear accommodation cavity. The rotor and the stator are separated by the isolation inner liner; The stator includes a stator core. A rotor installation groove is arranged in the middle of the stator core. The isolation inner liner is embedded in the rotor installation groove, and the rotor is located in the rotor installation groove. There is an isolation inner liner separating between the rotor and the rotor installation groove.

2. The rotor pump motor according to claim 1, wherein The wall thickness of the isolation inner liner is between 0.3 mm and 0.6 mm.

3. The rotor pump motor according to claim 1, characterized in that, The wall thickness of the isolation inner liner is 0.5 mm.

4. The rotor pump motor according to claim 1, characterized in that, The isolation inner liner is made of plastic.

5. The rotor pump motor according to claim 1, characterized in that, The rotor pump motor includes a pump head and a rotor pump installation sleeve. The rotor pump installation sleeve and the motor housing are locked tightly by screws, and the pump head and the rotor pump installation sleeve are locked tightly by screws; The motor front cover is located between the pump head and the motor housing. The rotor includes a motor shaft, and one end of the motor shaft extends out from the motor front cover and extends into the pump head.

6. The rotor pump motor according to claim 5, characterized in that, A central gear and a rotor sleeve are arranged in the pump head. The center of the central gear is connected to one end of the motor shaft. The rotor sleeve is sleeved around the central gear. The rotor sleeve and the central gear are eccentrically arranged. The rotation of the motor shaft drives the central gear to rotate, and the rotation of the central gear drives the rotor sleeve to rotate; There is a gap between the rotor sleeve and the central gear.

7. The rotor pump motor according to claim 5, characterized in that, A front sealing ring is arranged at the connection between the pump head and the rotor pump installation sleeve, and a rear sealing ring is arranged at the connection between the rotor pump installation sleeve and the motor housing.

8. The rotor pump motor according to claim 5, characterized in that, A first motor shaft sleeve is arranged in the pump head, a second motor shaft sleeve is arranged in the motor front cover, and a third motor shaft sleeve is arranged in the motor housing. The motor shaft passes through the first motor shaft sleeve, the second motor shaft sleeve and the third motor shaft sleeve.

9. The rotor pump motor according to claim 6, wherein, A motor shaft connection hole is arranged in the center of the central gear, and a motor shaft fixing hole is arranged on the side of the central gear. The motor shaft fixing hole is communicated with the motor shaft connection hole. One end of the motor shaft extends into the motor shaft connection hole, and a screw is connected in the motor shaft connection hole to lock the motor shaft.

10. The rotor pump motor according to claim 1, characterized in that, A motor drive board is arranged between the motor housing and the motor rear cover. The motor drive board is located in the rear accommodation cavity; Wire frames are respectively arranged on both sides of the stator core. Enameled wires are wound on the wire frames. The enameled wires are connected to the motor drive board, and the motor drive board is installed on the wire frames.

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