Vacuum anticorrosion water-cooled motor

Abstract

The utility model relates to the technical field of metallurgy, in particular to a vacuum anti-corrosion water-cooled motor, which comprises a motor base, a cast-aluminum rotor core, a stator core and a winding are arranged in the motor base, a gap is reserved between the stator core and the cast-aluminum rotor core, a front end cover is fixedly connected onto the motor base through bolts, and the front end cover is fixedly connected onto the motor base through bolts. The front end cover is rotatably connected with a shaft through a first bearing, a third sealing ring is arranged between the front end cover and the machine base, the machine base is fixedly connected with a rear end cover through a bolt, a first sealing ring is arranged between the rear end cover and the machine base, the rear end cover is fixedly connected with a rear sealing cover through a bolt, and the rear sealing cover is fixedly connected with a second sealing ring through a bolt. A second sealing ring is arranged between the rear sealing cover and the rear end cover, a junction box base is arranged on the machine base, and the machine base is rotationally connected with a shaft through a second bearing and a third bearing. According to the utility model, the motor is prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgy, in particular to a vacuum anti-corrosion water-cooled motor. Background Art

[0002] During the heat treatment process, the kiln will be evacuated as needed before gas is injected into the kiln to ensure the purity of the gas, including corrosive gases, to maintain or change the properties of the heat-treated metal. In order to ensure that the injected gas is evenly distributed in the kiln, the gas injected into the kiln needs to be stirred. Usually, a motor with an impeller installed at the end of the shaft is used, and the impeller end is placed in the kiln. The impeller is driven by the motor shaft to rotate and stir the gas in the kiln to achieve uniform distribution. When the kiln is evacuated to a vacuum state, the inside of the motor is in the same vacuum state as the kiln. In order to prevent the deposition of the injected gas in the kiln, the motor needs to be started and operated in a vacuum state before the gas is injected. After the corrosive gas is injected into the kiln, the gas will enter the motor along the gap between the motor shaft and the body, corroding the internal stator winding, causing the stator winding's protective layer to lose its insulation performance, resulting in internal short circuit and ablation of the stator winding; vacuum discharge will occur between the motor windings under vacuum, which will also break through the insulation layer, causing winding short circuit and ablation; the motor itself will generate heat during operation, and external heat radiation from the kiln will put the motor in a high-temperature working environment. Failure to dissipate heat in time will cause motor failure or even ablation. Replacing the motor is labor-intensive and time-consuming, and the kiln operation must be interrupted, resulting in waste and economic losses. For this reason, we propose a vacuum anti-corrosion water-cooled motor. Utility Model Content

[0003] The utility model aims to solve the defect in the prior art that the motor is easily damaged, and proposes a vacuum anti-corrosion water-cooled motor.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A vacuum corrosion-resistant water-cooled motor is designed, comprising a machine base, wherein a cast aluminum rotor core, a stator core, and a winding are arranged in the machine base, a gap is left between the stator core and the cast aluminum rotor core, a front end cover is fixedly connected to the machine base by bolts, a shaft is rotatably connected to the front end cover by a first bearing, a third sealing ring is arranged between the front end cover and the machine base, a rear end cover is fixedly connected to the machine base by bolts, a first sealing ring is arranged between the rear end cover and the machine base, a rear sealing cover is fixedly connected to the rear end cover by bolts, a second sealing ring is arranged between the rear sealing cover and the rear end cover, a junction box seat is arranged on the machine base, and the machine base is rotatably connected to the shaft by a second bearing and a third bearing.

[0006] Preferably, the front end cover includes a front end cover inner tube, a skeleton oil seal is fixedly connected to the front end cover inner tube, the skeleton oil seal abuts against the shaft, and a front end cover outer tube is fixedly connected to the front end cover inner tube, and a front end cover water jacket is formed between the front end cover inner tube and the front end cover outer tube.

[0007] Preferably, the machine base comprises a machine base outer tube, an organic base inner tube is fixedly connected to the machine base outer tube, and an organic base water jacket is arranged between the machine base inner tube and the machine base outer tube.

[0008] Preferably, the base water jacket and the front end cover water jacket are connected via a hose.

[0009] Preferably, the hose is a metal hose.

[0010] Preferably, the front end cover water jacket is connected with a second water inlet, and the base water jacket is connected with a first water inlet.

[0011] Preferably, an anti-corrosion potting glue is provided in the machine base, and the anti-corrosion potting glue seals the winding.

[0012] The vacuum anti-corrosion water-cooled motor proposed in the utility model has the following beneficial effects: by adding sealing materials to the connection parts of the motor components, the motor interior is sealed to ensure that the motor interior can meet the vacuum requirements; the anti-corrosion potting glue is poured into the two ends of the stator winding and the terminal box seat, and the exposed coils at both ends of the stator winding and the connecting wires in the terminal box are wrapped in the anti-corrosion potting glue to isolate the corrosive gas entering the motor interior, and at the same time increase the ionization resistance between the winding coils; the motor body is equipped with a water jacket, and the heat of the motor is replaced and taken out by the water medium to reduce the temperature of the motor. Compared with the exposed stator winding, this method eliminates the possibility of the motor stator winding being corroded by corrosive gas, and at the same time increases the insulation thickness of the motor winding coil under the vacuum state, avoiding the occurrence of vacuum discharge; compared with ordinary motors, the sealed motor can ensure that the motor maintains the same vacuum degree as the kiln when the kiln is evacuated, so that the kiln is in normal working condition; after the water jacket is installed, the working temperature environment of the motor is improved, the motor failure rate is reduced, the service life is extended, the utilization rate of the heat treatment kiln is greatly improved, and the operating cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the vacuum corrosion-resistant water-cooled motor proposed by the utility model.

[0014] In the figure: 1. impeller; 2. shaft; 3. front end cover; 4. machine base; 5. rear end cover; 6. rear sealing cover; 7. skeleton oil seal; 8. inner tube of front end cover; 9. outer tube of front end cover; 10. first bearing; 11. second bearing 12. third bearing; 13. outer tube of machine base; 14. inner tube of machine base; 15. cast aluminum rotor core; 16. stator core; 17. winding; 18. anti-corrosion potting glue; 19. first water inlet; 20. second water inlet; 21. metal hose; 22. junction box seat; 23. first sealing ring; 24. second sealing ring; 25. third sealing ring; 26. machine base water jacket; 27. front end cover water jacket. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0016] Example 1

[0017] Reference Figure 1 A vacuum corrosion-resistant water-cooled motor comprises a base 4, in which a cast aluminum rotor core 15, a stator core 16 and a winding 17 are arranged. A gap is left between the stator core 16 and the cast aluminum rotor core 15 to ensure that the cast aluminum rotor core 16 rotates in the stator core. A front end cover 3 is fixedly connected to the base 4 by bolts, and a shaft 2 is rotatably connected to the front end cover 3 through a first bearing 10. The front end cover 3 is flange-mounted outside the heat treatment kiln, and the shaft 2 extends into the kiln and is connected to the impeller 1. The impeller 1 rotates in the kiln driven by the shaft 2 to stir the gas in the kiln.

[0018] The base 4 is provided with an anti-corrosion potting glue 18, which is poured before the front cover 3 and the rear cover 5 are assembled. The anti-corrosion potting glue 18 seals the winding 17. When the kiln is evacuated, the air in the water-cooled motor will be evacuated along with the air in the kiln through the first bearing 10, the gap between the shaft 2 and the inner tube 8 of the front cover, and the gap between the shaft 2 and the skeleton oil seal 7, and form a vacuum state with the kiln; when the kiln is filled with gas, the gas or corrosive gas will enter the motor cavity through the gap between the shaft 2 and the skeleton oil seal 7, the shaft 2 and the inner tube 8 of the front cover, and the first bearing 10, which will corrode the exposed winding 17 and the insulation layer of the connection line. The anti-corrosion potting glue 18 seals all the exposed windings 17 and the connection lines in the anti-corrosion potting glue 18, isolates the corrosive gas from contacting the windings 17, increases the vacuum ionization resistance, and avoids corrosion of the windings and vacuum discharge of the winding coils.

[0019] A third sealing ring 25 is provided between the front end cover 3 and the machine base 4, the rear end cover 5 is fixedly connected to the machine base 4 by bolts, a first sealing ring 23 is provided between the rear end cover 5 and the machine base 4, a rear sealing cover 6 is fixedly connected to the rear end cover 5 by bolts, a second sealing ring 24 is provided between the rear sealing cover 6 and the rear end cover 5, a junction box seat 22 is provided on the machine base 4, the machine base 4 is rotatably connected to the shaft 2 through the second bearing 11 and the third bearing 12, and the inside of the motor is sealed by adding sealing material to the connecting part of the motor assembly to ensure that the inside of the motor can meet the vacuum requirement, and the bearing fixes the shaft 2 radially and allows axial rotation.

[0020] Example 2

[0021] Reference Figure 1 As another preferred embodiment of the utility model, on the basis of embodiment 1, the front end cover 3 includes a front end cover inner tube 8, a skeleton oil seal 7 is fixedly connected to the front end cover inner tube 8, the skeleton oil seal 7 is abutted against the shaft 2, a front end cover outer tube 9 is fixedly connected to the front end cover inner tube 8, and a front end cover water jacket 27 is formed between the front end cover inner tube 8 and the front end cover outer tube 9.

[0022] The base 4 includes a base outer tube 13, inside which a base inner tube 14 is fixedly connected, a base water jacket 26 is arranged between the base inner tube 14 and the base outer tube 13, and the base water jacket 26 is connected to the front end cover water jacket 27 through a hose 21, which is a metal hose.

[0023] A second water inlet 20 is connected to the front cover water jacket 27, and a first water inlet 19 is connected to the base water jacket 26. The two water jackets are connected by a metal hose 21 through their respective through holes. The heat conducted by the shaft 2 and the heat generated by the winding 17 are replaced by the flow of water medium. The water medium after the heat is replaced flows in and out through the first water inlet 19 and the second water inlet 20. The water flow direction of the water inlet is determined according to the principle of low in and high out based on the use of the vacuum anti-corrosion water-cooled motor.

[0024] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A vacuum corrosion-resistant water-cooled motor, comprising a base (4), wherein a cast aluminum rotor core (15), a stator core (16), and a winding (17) are arranged in the base (4), and a gap is left between the stator core (16) and the cast aluminum rotor core (15). It is characterized in that The machine base (4) is fixedly connected to a front end cover (3) by bolts, the front end cover (3) is rotatably connected to a shaft (2) by a first bearing (10), a third sealing ring (25) is provided between the front end cover (3) and the machine base (4), the machine base (4) is fixedly connected to a rear end cover (5) by bolts, a first sealing ring (23) is provided between the rear end cover (5) and the machine base (4), the rear end cover (5) is fixedly connected to a rear sealing cover (6) by bolts, a second sealing ring (24) is provided between the rear sealing cover (6) and the rear end cover (5), a junction box seat (22) is provided on the machine base (4), and the machine base (4) is rotatably connected to the shaft (2) by a second bearing (11) and a third bearing (12).

2. The vacuum anti-corrosion water-cooled motor according to claim 1, It is characterized in that The front end cover (3) comprises a front end cover inner tube (8), a skeleton oil seal (7) is fixedly connected to the front end cover inner tube (8), the skeleton oil seal (7) is in contact with the shaft (2), a front end cover outer tube (9) is fixedly connected to the front end cover inner tube (8), and a front end cover water jacket (27) is formed between the front end cover inner tube (8) and the front end cover outer tube (9).

3. The vacuum anti-corrosion water-cooled motor according to claim 2, It is characterized in that The machine base (4) comprises a machine base outer tube (13), a machine base inner tube (14) being fixedly connected to the machine base outer tube (13), and a machine base water jacket (26) being arranged between the machine base inner tube (14) and the machine base outer tube (13).

4. The vacuum anti-corrosion water-cooled motor according to claim 3, It is characterized in that The base water jacket (26) and the front end cover water jacket (27) are connected via a hose (21).

5. The vacuum anti-corrosion water-cooled motor according to claim 4, It is characterized in that The hose (21) is a metal hose.

6. The vacuum anti-corrosion water-cooled motor according to claim 5, It is characterized in that The front end cover water jacket (27) is connected to a second water inlet (20), and the base water jacket (26) is connected to a first water inlet (19).

7. The vacuum anti-corrosion water-cooled motor according to any one of claims 1 to 6, It is characterized in that An anti-corrosion potting glue (18) is provided in the machine base (4), and the anti-corrosion potting glue (18) seals the winding (17).

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