Permanent magnet electric roller structure

Abstract

The utility model relates to the technical field of electric rollers, in particular to a permanent magnet electric roller structure which comprises a fixed shaft, two sets of bearings are fixedly connected to the side wall of the fixed shaft, end covers are rotatably connected to the outer walls of the two sets of bearings, a shell is fixedly connected between the two sets of end covers, and a stator support is fixedly connected to the middle of each bearing. The stator support is located in the shell, multiple sets of cooling water channels are formed in the stator support, communicating openings are formed among the multiple sets of cooling water channels in a penetrating mode, a water inlet and a water outlet are formed in the fixing shaft, two sets of drainage pipes are fixedly connected to the side wall of the fixing shaft, the two sets of drainage pipes are communicated with the water inlet and the water outlet respectively, and the two sets of drainage pipes are both communicated with the cooling water channels. Cooling water is conveyed into the stator support, the temperature of the stator support and heat in the roller are reduced, the heat dissipation performance is remarkably improved, parts in the roller are prevented from being burnt out due to overheating, and the service life of the roller is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of electric rollers, in particular to a permanent magnet electric roller structure. Background Art

[0002] The electric drum is a new type of drive device that places the motor and reducer inside the drum body. It is mainly used in fixed and mobile belt conveyors, replacing the traditional motor and the separate drive device where the reducer is outside the driving drum. The permanent magnet electric drum is also called a magnetic pulley or a dry bulk magnetic separator. The internal structure of the drum is made of high-performance hard magnetic materials to form a composite magnetic system, which has the characteristics of high magnetic field strength, large depth, simple structure, easy use, no maintenance, no power consumption, and no demagnetization after long-term use.

[0003] Existing permanent magnet electric roller structures, such as the permanent magnet electric roller proposed in patent application number "CN202222576045.6", have high power, high power factor, and small variable frequency starting current through structures such as permanent magnet motors, star-shaped reduction mechanisms, and roller support shafts, which facilitate the realization of stepless speed regulation of the roller.

[0004] The existing permanent magnet electric roller structure, for example, the permanent magnet electric roller proposed in patent application number "CN202222576045.6", has an internal temperature that increases with the running time. The poor internal heat dissipation performance causes the heat to not be dissipated in time, which can easily cause the internal parts of the roller to overheat and burn out. The life span is easily reduced due to overheating inside the roller. Therefore, a permanent magnet electric roller structure is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a permanent magnet electric drum structure to solve the problems raised in the above background technology.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A permanent magnet electric drum structure comprises a fixed shaft, wherein two sets of bearings are fixedly connected to the side wall of the fixed shaft, the outer walls of the two sets of bearings are rotatably connected to end covers, and a shell is fixedly connected between the two sets of end covers;

[0008] A stator bracket is fixedly connected to the middle part of the bearing, the stator bracket is located in the shell, a plurality of cooling water channels are provided inside the stator bracket, connecting ports are provided between the plurality of cooling water channels, a water inlet and a water outlet are provided inside the fixed shaft, two groups of drainage pipes are fixedly connected to the side wall of the fixed shaft, the two groups of drainage pipes are respectively connected to the water inlet and the water outlet, and the two groups of drainage pipes are both connected to the cooling water channels.

[0009] Preferably, the two groups of drainage tubes are respectively located on both sides of the fixed shaft, and two groups of support seats are fixedly connected to the side walls of the fixed shaft, and the two groups of support seats are respectively located on one side of the two groups of bearings.

[0010] Preferably, mounting seats are fixedly connected to both ends of the outer wall of the shell, and the cross-sectional shape of the mounting seats is set to be an inverted "L" shape. A mounting frame is sleeved on the outside of the shell, and both ends of the mounting frame are respectively clamped in the two groups of mounting seats.

[0011] Preferably, the two groups of mounting seats are both threadedly connected with multiple groups of bolts, and the ends of the multiple groups of bolts all pass through the mounting frame, and an outer shell is fixedly connected to the outside of the mounting frame.

[0012] Preferably, a cavity is provided inside the mounting frame, and anti-slip patterns are provided on the outer wall of the outer shell.

[0013] Preferably, two groups of fixing rings are fixedly connected to the side wall of the fixing shaft, and the two groups of fixing rings are respectively located on both sides of the stator bracket.

[0014] Beneficial effects of the utility model:

[0015] The utility model transmits cooling water to the water channel inside the fixed shaft through the water inlet, and the cooling water enters the stator bracket through the cooling water channel and the connecting port to diffuse, thereby reducing the temperature of the stator bracket. The heat inside the drum is conducted to the cooling water through the stator bracket, so that the temperature of the cooling water is increased. The cooling water flowing through the stator bracket is discharged through the water outlet, so that the heat in the drum can be reduced, the heat dissipation performance is significantly improved, the internal parts of the drum are prevented from being overheated and burned, and the service life of the drum is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the internal structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the fixed shaft structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the stator bracket of the utility model;

[0020] Figure 4 This is a schematic diagram of the outer shell structure of the utility model;

[0021] Figure 5 This is a schematic diagram of the cross-sectional structure of the outer shell of the utility model;

[0022] The reference numerals in the figures are as follows:

[0023] 1. Fixed shaft; 2. Bearing; 3. Shell; 4. Water inlet; 5. Water outlet; 6. Stator bracket; 7. Cooling water channel; 8. End cover; 9. Support seat; 10. Drainage pipe; 11. Connecting port; 12. Mounting seat; 13. Outer shell; 14. Bolt; 15. Cavity; 16. Anti-slip pattern; 17. Mounting frame; 18. Fixed ring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] A permanent magnet electric drum structure comprises a fixed shaft 1, two sets of bearings 2 are fixedly connected to the side wall of the fixed shaft 1, the outer walls of the two sets of bearings 2 are rotatably connected to end covers 8, and a shell 3 is fixedly connected between the two sets of end covers 8;

[0026] A stator bracket 6 is fixedly connected to the middle part of the bearing 2, and the stator bracket 6 is located in the shell 3. A plurality of cooling water channels 7 are opened inside the stator bracket 6, and a connecting port 11 is opened through the plurality of cooling water channels 7. A water inlet 4 and a water outlet 5 are opened inside the fixed shaft 1. Two groups of drainage pipes 10 are fixedly connected to the side wall of the fixed shaft 1. The two groups of drainage pipes 10 are respectively connected to the water inlet 4 and the water outlet 5, and the two groups of drainage pipes 10 are both connected to the cooling water channel 7.

[0027] The existing permanent magnet electric roller structure, such as the permanent magnet electric roller proposed in the patent application number "CN202222576045.6", has a longer running time and an internal temperature rises. The poor internal heat dissipation performance causes the heat to not be dissipated in time, which can easily cause the internal parts of the roller to overheat and burn out. The service life is easily reduced due to overheating inside the roller. Figure 1-Figure 3As shown, the utility model is composed of two parts: a stator and a rotor, wherein the rotor is mainly composed of a drum shell 3, a magnetic steel, a bearing 2, a bearing 2 cover and an end cover 8, and the stator is mainly composed of a fixed shaft 1, a stator bracket 6, a stator coil, and a stator core. The stator bracket 6 is processed with a cooling water channel 7, and the right end of the fixed shaft 1 has a water inlet 4 and a water outlet 5 connected to the cooling water channel 7. The left end of the fixed shaft 1 is a hollow shaft, and the motor winding lead wire is led out from the left end of the fixed shaft 1. The cooling water is transported to the water channel inside the fixed shaft 1 through the water inlet 4, and the cooling water enters the cooling water channel 7 through the drainage pipe 10, and diffuses inside the stator bracket 6 through the connecting port 11, thereby reducing the temperature of the stator bracket 6. The heat inside the drum is conducted to the cooling water through the stator bracket 6, so that the temperature of the cooling water is increased, and the cooling water flowing through the stator bracket 6 is discharged through the water outlet 5, which can reduce the heat in the drum, significantly improve the heat dissipation performance, prevent the internal parts of the drum from overheating and burning, and improve the service life of the drum.

[0028] The two groups of drainage tubes 10 are respectively located on both sides of the fixed shaft 1 . Two groups of support seats 9 are fixedly connected to the side walls of the fixed shaft 1 . The two groups of support seats 9 are respectively located on one side of the two groups of bearings 2 .

[0029] like Figure 1-Figure 3 As shown, one group of drainage pipes 10 drains the cooling water into the cooling water channel 7, and another group of drainage pipes 10 drains the cooling water in the cooling water channel 7 out. The support seat 9 facilitates the installation and connection of the permanent magnet electric drum.

[0030] The two ends of the outer wall of the shell 3 are fixedly connected with mounting seats 12, and the cross-sectional shape of the mounting seat 12 is set to be an inverted "L" shape. The outer side of the shell 3 is sleeved with a mounting frame 17, and the two ends of the mounting frame 17 are respectively clamped in the two groups of mounting seats 12.

[0031] like Figure 4-Figure 5 As shown, the two sets of mounting seats 12 facilitate the installation of the mounting frame 17. During installation, one end of the mounting frame 17 is first inserted into the mounting seat 12, and then the other end is inserted, and then the mounting frame 17 is centered.

[0032] Multiple groups of bolts 14 are threadedly connected to the two groups of mounting seats 12 , and ends of the multiple groups of bolts 14 pass through the mounting frame 17 , and the outer shell 13 is fixedly connected to the outside of the mounting frame 17 .

[0033] like Figure 4-Figure 5 As shown, bolts 14 fix the mounting frame 17 to the mounting seat 12 so that the outer shell 13 will not rotate.

[0034] The mounting frame 17 has a cavity 15 formed therein, and the outer wall of the outer shell 13 has anti-slip patterns 16 formed thereon.

[0035] like Figure 4-Figure 5 As shown, the cavity 15 reduces the weight of the mounting bracket, making it easier to be driven by the shell 3 to rotate, and the anti-skid pattern 16 increases the connection stability between the drum and the external device.

[0036] Two sets of fixing rings 18 are fixedly connected to the side wall of the fixing shaft 1 , and the two sets of fixing rings 18 are respectively located on both sides of the stator bracket 6 .

[0037] like Figure 1 As shown, the two groups of fixing rings 18 have a limiting effect on the stator bracket 6 .

[0038] The working principle of a permanent magnet electric drum structure provided by the utility model is as follows:

[0039] Cooling water is transported to the water channel inside the fixed shaft 1 through the water inlet 4, and the cooling water enters the cooling water channel 7 through the drainage pipe 10, and diffuses inside the stator bracket 6 through the connecting port 11, thereby reducing the temperature of the stator bracket 6. The heat inside the drum is transferred to the cooling water through the stator bracket 6, so that the temperature of the cooling water is increased. The cooling water flowing through the stator bracket 6 is discharged through the water outlet 5, which can reduce the heat inside the drum, significantly improve the heat dissipation performance, prevent the internal parts of the drum from overheating and burning, and increase the service life of the drum.

[0040] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A permanent magnet electric drum structure, comprising a fixed shaft (1), characterized in that: The side wall of the fixed shaft (1) is fixedly connected with two groups of bearings (2), the outer walls of the two groups of bearings (2) are rotatably connected with end covers (8), and the housing (3) is fixedly connected between the two groups of end covers (8); A stator bracket (6) is fixedly connected to the middle of the bearing (2), the stator bracket (6) is located in the housing (3), a plurality of cooling water channels (7) are provided inside the stator bracket (6), a connecting port (11) is provided between the plurality of cooling water channels (7), a water inlet (4) and a water outlet (5) are provided inside the fixed shaft (1), two groups of drainage pipes (10) are fixedly connected to the side wall of the fixed shaft (1), the two groups of drainage pipes (10) are respectively connected to the water inlet (4) and the water outlet (5), and the two groups of drainage pipes (10) are both connected to the cooling water channels (7).

2. A permanent magnet electric drum structure according to claim 1, characterized in that: The two groups of drainage tubes (10) are respectively located on both sides of the fixed shaft (1); the side walls of the fixed shaft (1) are fixedly connected with two groups of support seats (9); the two groups of support seats (9) are respectively located on one side of the two groups of bearings (2).

3. A permanent magnet electric drum structure according to claim 1, characterized in that: Both ends of the outer wall of the shell (3) are fixedly connected with mounting seats (12), the cross-sectional shape of the mounting seats (12) is set to be an inverted "L" shape, and the outer part of the shell (3) is sleeved with a mounting frame (17), and the two ends of the mounting frame (17) are respectively clamped in the two groups of mounting seats (12).

4. A permanent magnet electric drum structure according to claim 3, characterized in that: The two groups of mounting seats (12) are both threadedly connected with a plurality of groups of bolts (14), and the ends of the plurality of groups of bolts (14) all pass through the mounting frame (17), and an outer shell (13) is fixedly connected to the outside of the mounting frame (17).

5. A permanent magnet electric drum structure according to claim 4, characterized in that: The mounting frame (17) has a cavity (15) inside, and the outer wall of the outer shell (13) has anti-slip patterns (16).

6. A permanent magnet electric drum structure according to claim 1, characterized in that: Two groups of fixing rings (18) are fixedly connected to the side wall of the fixing shaft (1), and the two groups of fixing rings (18) are respectively located on both sides of the stator bracket (6).

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