A low-speed permanent magnet motor for a direct-drive flotation machine

Abstract

The invention discloses a low-speed permanent magnet motor for a direct-drive flotation machine, comprising a machine base, a stator and a rotor, upper end covers and lower end covers are arranged on both sides of the machine base, and the stator and the rotor are both installed inside the machine base; a thrust bearing is arranged on the side of the non-drive end bearing away from the rotor, and an upper bearing intermediate pressure cover is arranged between the non-drive end bearing and the thrust bearing; an oil seal assembly is arranged on the side of the thrust bearing away from the non-drive end bearing; a rotor shaft is also arranged in the machine base, and the rotor shaft is a hollow shaft; a base steel plate is arranged on the lower end cover, and a lower bearing outer pressure cover and a connecting plate are arranged in sequence on the side of the drive end bearing away from the rotor, the lower bearing outer pressure cover is installed on the lower end cover, and the connecting plate is installed on the rotor shaft. The invention integrates the motor and the upper bearing body into one, removes intermediate links such as pulleys and V-belts, is easy to disassemble, has high operating efficiency, reduces the failure rate, greatly reduces the maintenance and repair costs, and reduces the labor intensity of workers.

Description

Technical Field

[0001] The invention relates to a low-speed permanent magnet motor for a direct-drive flotation machine. Background Art

[0002] The main water washing equipment in metallurgical mines, coal washing plants, chemical industry, building materials and other industries is flotation machine, which operates at a speed of 100r / min to 300r / min, with a 6-level or 8-level motor and a pulley as the driving reducer. However, the V-belt drive has low operating efficiency. The number of pulley grooves, the tightness of the V-belt, and the angle between the driving pulley and the driven pulley are the main factors causing the low operating efficiency of the V-belt drive. Summary of the invention

[0003] The purpose of the present invention is to provide a low-speed permanent magnet motor for a direct-drive flotation machine, so as to solve the problem that the existing flotation machine is driven by a V-belt and has low operating efficiency.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] The present invention discloses a low-speed permanent magnet motor for a direct-drive flotation machine, comprising a machine base, a stator and a rotor, wherein an upper end cover and a lower end cover are respectively arranged on both sides of the machine base, the stator and the rotor are both mounted inside the machine base, and the rotor is mounted in the machine base through a non-drive end bearing and a drive end bearing; a thrust bearing is arranged on a side of the non-drive end bearing away from the rotor, an upper bearing intermediate pressure cover is arranged between the non-drive end bearing and the thrust bearing, and the thrust bearing is used in conjunction with a motor shaft; an oil seal assembly is arranged on a side of the thrust bearing away from the non-drive end bearing; a rotor shaft is also arranged in the machine base, and the rotor shaft is a hollow shaft; a base steel plate is arranged on the lower end cover, a lower bearing outer pressure cover and a connecting plate are arranged in sequence on a side of the drive end bearing away from the rotor, the lower bearing outer pressure cover is mounted on the lower end cover, and the connecting plate is mounted on the rotor shaft; the low-speed permanent magnet motor for a direct-drive flotation machine is a permanent magnet motor.

[0006] Furthermore, the non-drive end bearing and the drive end bearing are both spherical roller bearings.

[0007] Furthermore, an upper bearing cover is provided on the outer side of the thrust bearing, and the upper bearing cover is fixed to the upper end cover by hexagonal bolts.

[0008] Furthermore, a round nut and a round nut stop washer are provided between the upper bearing cover and the thrust bearing.

[0009] Furthermore, the oil seal assembly is arranged on a side of the upper bearing cover away from the thrust bearing, and the oil seal assembly includes an oil seal skeleton and an oil seal mounting ring, the oil seal skeleton is installed closely against the rotor shaft, and the oil seal mounting ring is connected to the upper bearing cover.

[0010] Furthermore, a sealing flange is provided on a side of the oil seal mounting ring away from the upper bearing cover.

[0011] Furthermore, the connecting disk is mounted on the rotor shaft via a connecting disk blocking cover.

[0012] Furthermore, the coil on the stator is connected to the terminal posts in the terminal box installed on the base through the terminal box inlet.

[0013] Furthermore, the stator also includes a water cooling system, and the water cooling system includes a base water channel, a water inlet pipe and a water outlet pipe.

[0014] Furthermore, the rotor is provided with a magnetic pole mounting ring and a magnetic shoe, the magnetic pole mounting ring is fixed on the rotor shaft; the magnetic shoe is fixed on the magnetic pole mounting ring.

[0015] Compared with the prior art, the beneficial technical effects of the present invention are:

[0016] The motor and the vertical stirring shaft are integrated into one, removing the intermediate links of the pulley and the V-belt transmission. The parts have strong integrity, are easy to disassemble and assemble, and the equipment operation safety is improved, which is convenient for adding medicine and inspection. The equipment operation efficiency is improved, the failure rate is reduced, the maintenance and repair costs are greatly reduced, and the labor intensity of workers is reduced. At the same time, due to the use of permanent magnet structure, it not only saves 10%-15% energy compared with the same power motor-coupling-reducer-drum structure, but also saves space. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the structure of a low-speed permanent magnet motor for a direct-drive flotation machine of the present invention;

[0019] Figure 2 is a schematic diagram of the stator structure;

[0020] Figure 3 This is the stator punching diagram;

[0021] Figure 4 is a schematic diagram of the rotor structure;

[0022] Figure 5 This is the rotor punching diagram;

[0023] Explanation of the reference numerals in the accompanying drawings: 1. base; 2. stator; 3. rotor; 4. upper end cover; 5. lower end cover; 6. non-drive end bearing; 7. drive end bearing; 8. intermediate pressure cover of the upper bearing; 9. oil seal assembly; 91. oil seal frame; 92. oil seal mounting ring; 10. thrust bearing; 11. magnetic shoe; 12. rotor shaft; 13. base steel plate; 14. upper bearing cover; 15. round nut; 16. round nut retaining washer; 17. sealing flange; 18. outer pressure cover of the lower bearing; 19. connecting plate; 20. connecting plate baffle; 21. junction box inlet; 22. junction box; 23. terminal; 24. base water channel; 25. water inlet wire tube; 26. water outlet wire tube; 27. magnetic pole mounting ring. DETAILED DESCRIPTION

[0024] like Figure 1-5 As shown, a low-speed permanent magnet motor for a direct-drive flotation machine includes a machine base 1, a stator 2 and a rotor 3. An upper end cover 4 and a lower end cover 5 are respectively provided on both sides of the machine base 1. The stator 2 and the rotor 3 are both installed inside the machine base 1. The rotor 3 is installed in the machine base 1 through a non-drive end bearing 6 and a drive end bearing 7. The non-drive end bearing 6 and the drive end bearing 7 are both spherical roller bearings.

[0025] A thrust bearing 10 is provided on the side of the non-drive end bearing 6 away from the rotor 3, an upper bearing intermediate pressure cover 8 is provided between the non-drive end bearing 6 and the thrust bearing 10, and the thrust bearing 10 is used in conjunction with the motor shaft 11. An upper bearing cover 14 is provided on the outer side of the thrust bearing 10, a round nut 15 and a round nut stop washer 16 are provided between the upper bearing cover 14 and the thrust bearing 10, and the upper bearing cover 14 is fixed to the upper end cover 4 by a hexagonal bolt.

[0026] An oil seal assembly 9 is provided on the side of the thrust bearing 10 away from the non-drive end bearing 6. The oil seal assembly 9 is arranged on the side of the upper bearing cover 14 away from the thrust bearing 10, and the oil seal assembly 9 includes an oil seal skeleton 91 and an oil seal mounting ring 92. The oil seal skeleton 91 is installed closely against the rotor shaft 12, and the oil seal mounting ring 92 is connected to the upper bearing cover 14. The thrust bearing 10 is sealed by the oil seal assembly 9.

[0027] The base 1 is also provided with a rotor shaft 12, which is a hollow shaft, and the hollow part is used for air inside the flotation machine. The lower end cover 5 is provided with a base steel plate 13, which is used to fix the motor to meet the use function.

[0028] A lower bearing outer pressure cover 18 and a connecting plate 19 are provided in sequence on the side of the driving end bearing 7 away from the rotor 3 . The lower bearing outer pressure cover 18 is mounted on the lower end cover 5 , and the connecting plate 19 is mounted on the rotor shaft 12 via a connecting plate baffle 20 .

[0029] The low-speed permanent magnet motor for the direct-drive flotation machine is a permanent magnet motor. The permanent magnet structure is adopted, which not only saves 10%-15% energy but also saves space compared with the same power motor-coupling-reducer-drum structure.

[0030] A sealing flange 17 is provided on a side of the oil seal mounting ring 92 away from the upper bearing cover 14 .

[0031] The coil on the stator 2 is connected to the terminal 23 in the terminal box 22 installed on the base 1 through the terminal box inlet 21, and an electromagnetic field is formed after power is turned on. The stator 2 also includes a water cooling system, which includes a base water channel 24, a water inlet wire pipe 25 and a water outlet wire pipe 26. The base water channel 24 is spiral to ensure the reasonable circulation of cooling water.

[0032] The rotor 3 is provided with a magnetic pole mounting ring 27 and a magnetic shoe 11 . The magnetic pole mounting ring 27 is fixed on the rotor shaft 12 , and the magnetic shoe 11 is fixed on the magnetic pole mounting ring 27 .

[0033] The junction box 22 introduces external power to the motor, the coil on the stator 2 generates a magnetic field through electricity, and the magnetic field interacts with the permanent magnet on the rotor 3. The rotor 3 is assembled in the stator 2 through a spherical roller bearing to rotate. The connecting plate 19 on the rotor shaft 12 is connected to the flotation machine to drive the flotation machine to work. The wind required by the flotation machine is transmitted into it through the hollow part of the rotor shaft 12.

[0034] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A low-speed permanent magnet motor for a direct-drive flotation machine, characterized in that: The invention comprises a machine base (1), a stator (2) and a rotor (3), wherein an upper end cover (4) and a lower end cover (5) are respectively arranged on both sides of the machine base (1), the stator (2) and the rotor (3) are both installed inside the machine base (1), and the rotor (3) is installed in the machine base (1) via a non-drive end bearing (6) and a drive end bearing (7); a thrust bearing (10) is arranged on the side of the non-drive end bearing (6) away from the rotor (3), and the non-drive end bearing (6) and the drive end bearing (7) are arranged on the side of the non-drive end bearing (6) away from the rotor (3). An upper bearing intermediate pressure cover (8) is provided between the thrust bearing (10), the thrust bearing (10) is used in conjunction with the motor shaft, an upper bearing cover (14) is provided on the outer side of the thrust bearing (10), and the upper bearing cover (14) is fixed to the upper end cover (4) by means of hexagonal bolts; a rotor shaft (12) is also provided in the machine base (1), and the rotor shaft (12) is a hollow shaft; an oil seal assembly (9) is provided on the side of the thrust bearing (10) away from the non-drive end bearing (6), and the ... The oil seal assembly (9) is arranged on a side of the upper bearing cover (14) away from the thrust bearing (10), the oil seal assembly (9) comprising an oil seal frame (91) and an oil seal mounting ring (92), the oil seal frame (91) being mounted close to the rotor shaft (12), the oil seal mounting ring (92) being connected to the upper bearing cover (14), and a sealing flange (17) being arranged on a side of the oil seal mounting ring (92) away from the upper bearing cover (14); the lower end cover (5) is provided with a base steel The stator (2) is provided with a lower bearing outer cover (18) and a connecting plate (19) in sequence on the side of the drive end bearing (7) away from the rotor (3), the lower bearing outer cover (18) is mounted on the lower end cover (5), and the connecting plate (19) is mounted on the rotor shaft (12); the stator (2) also includes a water cooling system, the water cooling system includes a base water channel (24), a water inlet wire pipe (25) and a water outlet wire pipe (26), and the base water channel (24) is spiral.

2. The low-speed permanent magnet motor for a direct-drive flotation machine according to claim 1, characterized in that: The non-drive end bearing (6) and the drive end bearing (7) are both spherical roller bearings.

3. The low-speed permanent magnet motor for a direct-drive flotation machine according to claim 1, characterized in that: A round nut (15) and a round nut stop washer (16) are provided between the upper bearing cover (14) and the thrust bearing (10).

4. The low-speed permanent magnet motor for a direct-drive flotation machine according to claim 1, characterized in that: The connecting disk (19) is mounted on the rotor shaft (12) via a connecting disk blocking cover (20).

5. The low-speed permanent magnet motor for a direct-drive flotation machine according to claim 1, characterized in that: The coil on the stator (2) is connected to a terminal post (23) in a terminal box (22) mounted on the base (1) through a terminal box inlet (21).

6. The low-speed permanent magnet motor for a direct-drive flotation machine according to claim 1, characterized in that: The rotor (3) is provided with a magnetic pole mounting ring (27) and a magnetic shoe (11); the magnetic pole mounting ring (27) is fixed on the rotor shaft (12); and the magnetic shoe (11) is fixed on the magnetic pole mounting ring (27).

Images