Rotor half-assembly structure

Abstract

The utility model relates to the technical field of rotor semi-assembly structures, in particular to a rotor semi-assembly structure, which is characterized in that the smaller the gap between a rotor structure and a motor stator structure is, the higher the power density is, and the minimum distance between a magnetic shoe surface and a stator can be ensured by the rotor structure, so that the high power density is realized; comprising an impeller lower cover and an impeller upper cover. The impeller further comprises six sets of fastening pins, six sets of permanent magnets, a rotor iron core and a graphite bearing, the impeller lower cover and the impeller upper cover are covered, the six sets of permanent magnets are installed in the impeller lower cover and the impeller upper cover, the rotor iron core is rotatably installed in the impeller lower cover and the impeller upper cover through the graphite bearing, and the six sets of fastening pins are installed in the six sets of permanent magnets to be fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of rotor semi-assembly structures, in particular to a rotor semi-assembly structure. Background Technique

[0002] The rotor semi-assembly structure usually refers to the collection of some components in the rotor assembly.

[0003] In the existing rotor semi-assembly structure, for example, in a rotor semi-assembly structure disclosed in the utility model patent with the application number 202120141146.3, the semi-circular retaining ring is fixed to the rotor with heavy-duty elastic pins, resulting in the semi-circular retaining ring not being easily detached during movement. Using heavy-duty elastic pins increases the strength of the rotor assembly structure and extends the service life of the motor.

[0004] However, during the use of the rotor semi-assembly structure, the existing device has a low high power density. Content of the Utility Model

[0005] To solve the above technical problems, the utility model provides a rotor semi-assembly structure in which the smaller the gap between the rotor structure and the motor stator structure, the higher the power density. This rotor structure can ensure the smallest distance between the magnetic tile surface and the stator, thereby achieving a high power density.

[0006] A rotor semi-assembly structure of the utility model includes an impeller lower cover and an impeller upper cover; it also includes six sets of set screws, six sets of permanent magnets, a rotor core, and a graphite bearing. The six sets of permanent magnets are installed inside the impeller lower cover and the impeller upper cover, the rotor core is rotatably installed inside the impeller lower cover and the impeller upper cover through the graphite bearing, and the six sets of set screws are installed inside the six sets of permanent magnets for fixation; this structure realizes an assembly form of an electric motor rotor structure. This structure is integrated with a pump impeller, motor magnetic tiles, and a rotor core. One end is the pump impeller, the other end is the rotor magnetic tile, and the middle is the rotor core. The smaller the gap between the rotor structure and the motor stator structure, the higher the power density. This rotor structure can ensure the smallest distance between the magnetic tile surface and the stator, thereby achieving a high power density.

[0007] Preferably, after the permanent magnet is radially inserted into the rotor core, the set screw is pressed into the rotor core between the magnetic tiles, causing the rotor core to deform outward and tightly hold the magnetic tile; thereby fixing the magnetic tile in the axial direction of the impeller.

[0008] Preferably, there are inclined angles on both sides of the permanent magnet. After the set screw is pressed in, the inclined angles on both sides of the permanent magnet are pressed tightly; after the pin is completed, through injection molding, the impeller lower cover is coated with the assembled rotor core and permanent magnet.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows: This structure realizes an assembly form of a motor rotor structure. This structure is integrated by a pump impeller, a motor magnetic tile, and a rotor core. One end is the pump impeller, the other end is the rotor magnetic tile, and the middle is the rotor core. The smaller the gap between the rotor structure and the motor stator structure, the higher the power density. This rotor structure can ensure the smallest distance between the magnetic tile surface and the stator, thereby achieving a high power density. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is an exploded axonometric structural schematic diagram of the present utility model;

[0011] Figure 2 is a cross-sectional structural schematic diagram of the present utility model;

[0012] Figure 3 is a cross-sectional structural schematic diagram after pressing in of the present utility model;

[0013] Figure 4 is an external structural schematic diagram after pressing in of the present utility model;

[0014] Reference numerals in the drawings: 1. Lower cover of the impeller; 2. Set screw; 3. Permanent magnet; 4. Rotor core; 5. Graphite bearing; 6. Upper cover of the impeller. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present utility model more thorough and comprehensive.

[0016] Embodiment 1

[0017] As Figures 1 to 4 shown, a rotor semi-assembly structure includes a lower cover 1 of the impeller and an upper cover 6 of the impeller, and also includes six groups of set screws 2, six groups of permanent magnets 3, a rotor core 4, and a graphite bearing 5. The lower cover 1 of the impeller and the upper cover 6 of the impeller are closed, the six groups of permanent magnets 3 are installed in the lower cover 1 of the impeller and the upper cover 6 of the impeller, the rotor core 4 is rotatably installed in the lower cover 1 of the impeller and the upper cover 6 of the impeller through the graphite bearing 5, and the six groups of set screws 2 are installed in the six groups of permanent magnets 3 for fixation;

[0018] After the permanent magnet 3 is radially inserted into the rotor core 4, the set screw 2 is pressed into the rotor core 4 between the magnetic tiles, causing the rotor core 4 to deform outward and tightly hold the magnetic tiles;

[0019] There are inclined angles on both sides of the permanent magnet 3. After the set screw 2 is pressed in, the inclined angles on both sides of the permanent magnet 3 are pressed tightly;

[0020] This structure is integrated with a pump impeller, motor magnetic tiles, and a rotor core. One end is the pump impeller, the other end is the rotor magnetic tiles, and the middle is the rotor core. The smaller the gap between the rotor structure and the motor stator structure, the higher the power density. This rotor structure can ensure the smallest distance between the magnetic tile surface and the stator, thus achieving a high power density.

[0021] As Figures 1 to 4 shown, a rotor semi-assembly structure of the present utility model, during operation, this structure is integrated with a pump impeller, motor magnetic tiles, and a rotor core. One end is the pump impeller, the other end is the rotor magnetic tiles, and the middle is the rotor core.

[0022] The main function achieved by the present utility model is: during the operation of the rotor semi-assembly structure, the smaller the gap between the rotor structure and the motor stator structure, the higher the power density. This rotor structure can ensure the smallest distance between the magnetic tile surface and the stator, thus achieving a high power density.

[0023] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A rotor semi-assembly structure, comprising an impeller lower cover (1) and an impeller upper cover (6); characterized in that, It also includes six groups of set pins (2), six groups of permanent magnets (3), a rotor core (4) and a graphite bearing (5). The impeller lower cover (1) and the impeller upper cover (6) are closed. The six groups of permanent magnets (3) are installed in the impeller lower cover (1) and the impeller upper cover (6). The rotor core (4) is rotatably installed in the impeller lower cover (1) and the impeller upper cover (6) through the graphite bearing (5). The six groups of set pins (2) are installed in the six groups of permanent magnets (3) for fixation.

2. The rotor semi-assembly structure according to claim 1, characterized in that, After the permanent magnet (3) is radially inserted into the rotor core (4), the set pin (2) is pressed into the rotor core (4) between the magnetic tiles, causing the rotor core (4) to deform outward and tightly hold the magnetic tiles.

3. The rotor semi-assembly structure according to claim 2, characterized in that, There are inclined angles on both sides of the permanent magnet (3). After the set pin (2) is pressed in, the inclined angles on both sides of the permanent magnet (3) are tightened.

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