Three-phase motor with protection

Abstract

The utility model provides a three-phase motor with protection, which relates to the technical field of motors and comprises a three-phase motor body, a mounting seat is fixedly mounted at the bottom end of the three-phase motor body, a rear cover is fixedly mounted at the rear end of the three-phase motor body, and a cooling fan is mounted at the position, close to the rear cover, of the rear end in the three-phase motor. A heat dissipation hole is formed in the rear end of the rear cover, a limiting ring is fixedly installed on the edge of the rear end of the rear cover, a dustproof net is arranged at the position, close to the heat dissipation hole, of the rear end of the rear cover, and a fixing plate is fixedly installed at the front end of the dustproof net. According to the utility model, through the arrangement of the dustproof net, the dustproof net is blocked at one end of the heat dissipation hole, so that when the three-phase motor body is used, particulate matters can be effectively prevented from entering the three-phase motor body through the dustproof net, and the cooling efficiency of the heat dissipation fan is maintained through preventing the particulate matters from blocking the three-phase motor body; damage of particles to internal parts of the motor is reduced, and the service life of the motor is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of motors and relates to a three-phase motor, in particular to a three-phase motor with protection. Background Art

[0002] The three-phase motor is a widely used electric motor, mainly used in industrial and commercial equipment. By using a three-phase AC power supply, it provides higher efficiency and power than a single-phase motor. The working principle of the three-phase motor is based on the rotating magnetic field generated by the three-phase AC in the motor winding. This rotating magnetic field interacts with the magnets or current on the motor rotor to generate torque and drive the motor to rotate. The three-phase power supply enables the motor to generate a smoother rotational torque, improving efficiency and stability.

[0003] Publication number CN214707366U discloses a three-phase asynchronous motor, which includes a housing, a stator arranged in the housing, and a rotor arranged in the housing. The housing is provided with a support seat, and the housing includes a shell, an end cover arranged in the shell, and a cover shell arranged in the shell, and the end cover is arranged integrally with the shell. Although the present application has the effect of improving the problem of high noise of the three-phase asynchronous motor, the traditional three-phase motor design mainly focuses on improving efficiency, reducing noise and increasing output power. In these designs, the heat dissipation of the motor is an important aspect because the motor generates a lot of heat during operation. Usually, the motor design includes heat dissipation holes and fans to assist in cooling. These heat dissipation holes may be exposed to the external environment, making the motor susceptible to dust and other particulate matter. When the rear end heat dissipation holes of the three-phase motor are not properly protected, dust and other small particulate matter may enter the motor, affecting the rotation of the heat dissipation fan and affecting the life of the motor. Utility Model Content

[0004] The utility model aims to solve the above problems in the prior art and proposes a three-phase motor with long service life and protection.

[0005] The purpose of the utility model can be achieved through the following technical solutions: a three-phase motor with protection, comprising a three-phase motor body, a mounting seat fixedly installed at the bottom end of the three-phase motor body, a back cover fixedly installed at the rear end of the three-phase motor body, a cooling fan installed at the rear end of the three-phase motor near the back cover, a cooling hole is provided at the rear end of the back cover, a limiting ring is fixedly installed at the edge of the rear end of the back cover, a dustproof net is provided at the rear end of the back cover near the cooling hole, a fixing plate is fixedly installed at the front end of the dustproof net, a limiting hole is penetrated through one side of the fixing plate, and a screw is penetrated through the inside of the limiting hole.

[0006] Furthermore, the screw is slidably connected to the limiting hole, and the limiting ring is slidably connected to the fixing plate. Accordingly, the position of the fixing plate at the rear end of the rear cover is limited.

[0007] Furthermore, the rear end of the dustproof net is provided with air holes, and the air holes are evenly arranged at the rear end of the dustproof net. Accordingly, in order to make the dustproof net more breathable, it is convenient to dissipate heat for the three-phase motor.

[0008] Furthermore, a fixing hole is provided at the rear end of the back cover near the position of the screw, so that the screw can be screwed into the back cover.

[0009] Furthermore, the fixing hole is threadedly connected to the screw, so that the screw can be screwed into the fixing hole to fix the fixing plate.

[0010] Furthermore, the bottom end of the mounting seat is provided with an adjustment and fixing mechanism, the adjustment and fixing mechanism includes a limit slot, the limit slots are all opened at the four corners of the top end of the mounting seat, a hollow rod is provided through the limit slot, the upper and lower ends of the hollow rod are fixedly installed with a stopper, and a bolt is provided through the hollow rod. Accordingly, in order to facilitate the fixing of the mounting seat.

[0011] Further, the bolt is threadedly connected to the hollow rod, and the hollow rod is slidably connected to the limiting groove. Accordingly, the hollow block and the bolt can be moved left and right on the top of the mounting seat to adjust the installation position.

[0012] Compared with the prior art, the three-phase motor with protection has the following advantages:

[0013] 1. By setting the dustproof net, the dustproof net is blocked at one end of the heat dissipation hole, so that when the three-phase motor body is in use, the dustproof net can effectively prevent particles from entering the inside of the three-phase motor body. By preventing the blockage of particles, the cooling efficiency of the cooling fan is maintained, the damage of particles to the internal components of the motor is reduced, and the life of the motor is extended.

[0014] 2. By setting the limit groove and the hollow rod, the bolt can be moved left and right on the mounting seat, so that the mounting seat can be installed and fixed at different positions, avoiding the phenomenon that the mounting seat cannot be installed and fixed due to misalignment or deformation of the mounting seat, making the fixation of the mounting seat more convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of a three-phase motor with protection;

[0016] Figure 2 This is an exploded view of a three-phase motor with protection;

[0017] Figure 3 for Figure 2 The enlarged schematic diagram of point A in the middle;

[0018] Figure 4 for Figure 2 A magnified schematic diagram of point B in the middle.

[0019] Legend:

[0020] 1. Three-phase motor body; 2. Back cover; 3. Mounting base; 4. Dust screen; 5. Air vents; 6. Screws; 7. Heat dissipation holes; 8. Cooling fan; 9. Limiting ring; 10. Fixing hole; 11. Limiting hole; 12. Fixing plate; 13. Limiting groove; 14. Hollow rod; 15. Block; 16. Bolt. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure. Embodiment 1

[0023] See also Figure 1-3 The utility model provides a technical solution: a three-phase motor with protection, including a three-phase motor body 1, a mounting seat 3 is fixedly installed at the bottom end of the three-phase motor body 1, a rear cover 2 is fixedly installed at the rear end of the three-phase motor body 1, a heat dissipation fan 8 is installed at the rear end of the three-phase motor near the rear cover 2, a heat dissipation hole 7 is opened at the rear end of the rear cover 2, a limiting ring 9 is fixedly installed at the edge of the rear end of the rear cover 2, a dustproof net 4 is arranged at the rear end of the rear cover 2 near the heat dissipation hole 7, a fixing plate 12 is fixedly installed at the front end of the dustproof net 4, a limiting hole 11 is penetrated through one side of the fixing plate 12, a screw 6 is slidably connected to the limiting hole 11, and the limiting ring 9 is connected to the fixing plate 1 2 is slidingly connected, a rear end of the dustproof net 4 is provided with an air vent 5, the air vents 5 are evenly arranged at the position of the rear end of the dustproof net 4, a screw 6 is penetrated inside the limiting hole 11, a fixing hole 10 is provided at the position near the rear end of the rear cover 2 near the screw 6, and the fixing hole 10 is threadedly connected to the screw 6. The design of the dustproof net 4 is to make the dustproof net 4 block one end of the heat dissipation hole 7, so that when the three-phase motor body 1 is in use, the dustproof net 4 can effectively prevent particles from entering the inside of the three-phase motor body 1. By preventing clogging by particles, the cooling efficiency of the heat dissipation fan 8 is maintained, the damage of particles to the internal components of the motor is reduced, and the life of the motor is extended. Embodiment 2

[0024] See also Figure 2 , 4 The bottom end of the mounting seat 3 is provided with an adjusting and fixing mechanism, which includes a limiting groove 13, which is arranged at the four corners of the top end of the mounting seat 3, and a hollow rod 14 is provided inside the limiting groove 13, and blocks 15 are fixedly installed at the upper and lower ends of the hollow rod 14, and a bolt 16 is provided inside the hollow rod 14, and the bolt 16 is threadedly connected to the hollow rod 14, and the hollow rod 14 is slidably connected to the limiting groove 13. The limiting groove 13 and the hollow rod 14 are designed to enable the bolt 16 to move left and right on the mounting seat 3, so that the mounting seat 3 can be installed and fixed at different positions, avoiding the phenomenon that the mounting seat 3 cannot be installed and fixed due to misalignment or deformation of the mounting seat 3, and making the fixing of the mounting seat 3 more convenient and quick.

[0025] Working principle: When installing the three-phase motor body 1, it is only necessary to place the three-phase motor body 1 to the position where the three-phase motor body 1 needs to be installed. At this time, the hollow rod 14 is moved along the limiting groove 13. The movement of the hollow rod 14 drives the bolt 16 to move until the bolt 16 moves to align with the mounting hole. Then, a wrench is used to tighten the bolt 16, so that the bolt 16 is screwed into the mounting hole to fix the mounting seat 3. When the three-phase motor body 1 is used for a long time, the heat dissipation hole 7 can be protected by the dustproof net 4 to prevent particles from entering the inside of the three-phase motor body 1 and affecting the operation of the heat dissipation fan 8 when the heat dissipation fan 8 is in use. When cleaning the dustproof net 4, it is only necessary to use a wrench to tighten the screw 6. After the screw 6 is screwed away from the fixing hole 10, the dustproof net 4 can be moved along the limiting ring 9 until the dustproof net 4 moves away from the three-phase motor body 1. Then, the dustproof net 4 can be cleaned.

[0026] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A three-phase motor with protection, comprising a three-phase motor body (1), characterized in that: A mounting seat (3) is fixedly mounted on the bottom end of the three-phase motor body (1), a rear cover (2) is fixedly mounted on the rear end of the three-phase motor body (1), a heat dissipation fan (8) is mounted at a position near the rear cover (2) at the rear end of the three-phase motor, a heat dissipation hole (7) is provided at the rear end of the rear cover (2), a limit ring (9) is fixedly mounted on the edge of the rear end of the rear cover (2), a dust screen (4) is provided at a position near the heat dissipation hole (7) at the rear end of the rear cover (2), a fixing plate (12) is fixedly mounted on the front end of the dust screen (4), a limit hole (11) is penetrated through one side of the fixing plate (12), and a screw (6) is penetrated through the inside of the limit hole (11).

2. The three-phase motor with protection according to claim 1 is characterized in that: The screw (6) is slidably connected to the limiting hole (11), and the limiting ring (9) is slidably connected to the fixing plate (12).

3. The three-phase motor with protection according to claim 1 is characterized in that: The rear end of the dustproof net (4) is provided with ventilation holes (5), and the ventilation holes (5) are evenly arranged at the rear end of the dustproof net (4).

4. The three-phase motor with protection according to claim 1 is characterized in that: A fixing hole (10) is provided at the rear end of the rear cover (2) near the screw (6).

5. The three-phase motor with protection according to claim 4 is characterized in that: The fixing hole (10) and the screw (6) are threadedly connected.

6. The three-phase motor with protection according to claim 1 is characterized in that: An adjusting and fixing mechanism is provided at the bottom end of the mounting seat (3), the adjusting and fixing mechanism comprising limiting grooves (13), the limiting grooves (13) are arranged at the four corners of the top end of the mounting seat (3), a hollow rod (14) is provided through the limiting grooves (13), stoppers (15) are fixedly installed at the upper and lower ends of the hollow rod (14), and a bolt (16) is provided through the hollow rod (14).

7. The three-phase motor with protection according to claim 6 is characterized in that: The bolt (16) is threadedly connected to the hollow rod (14), and the hollow rod (14) is slidably connected to the limiting groove (13).

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