Blower bearing replacement and installation equipment for main smoke exhauster of aluminum electrolysis smoke purification system

Abstract

The utility model discloses an aluminum electrolysis flue gas purification system main smoke ventilator fan bearing replacing and installing device, which comprises a workbench, a dismounting mechanism, a four-claw coupling and a supporting mechanism, the four-claw coupling comprises a coupling and a screw rod, the dismounting mechanism is arranged above the workbench, a round hole is arranged in an end part stress plate of the dismounting mechanism, and the supporting mechanism is arranged above the workbench. The reinforcing plate is attached to one side of the end stress plate, the tail stress plate is provided with a clamping hole, the end stress plate and the tail stress plate are provided with through holes, four end through holes are distributed in the periphery of the round hole, the tail stress plate is provided with three tail through holes, the two ends of the screw penetrate through the end through holes and the tail through holes, the screw is provided with a nut, and a jack is arranged between the reinforcing plate and the tail stress plate. The supporting mechanism comprises a supporting frame and sleepers. The supporting mechanism ensures that the wind impeller is supported, displacement is reduced, and personnel injury caused by unstable placement of the wind impeller is prevented; the tail stress plate clamps the coupler, the end stress plate and the jack are matched to dismantle the coupler and a bearing, and the compression resistance and the stability of the device are improved through the reinforcing plate and the screw rod.

Description

Technical Field

[0001] The utility model belongs to the technical field of equipment for replacing and installing the bearings of the main exhaust fan, and particularly relates to equipment for replacing and installing the bearings of the main exhaust fan in an aluminum electrolysis flue gas purification system. Background Art

[0002] The main exhaust fan mainly provides power for sucking the flue gas in the electrolysis workshop, extracts the flue gas from the electrolytic cell, reduces the unorganized emission of electrolysis flue gas, and meets the environmental protection requirements. The power action of the main exhaust fan creates a negative pressure inside equipment such as reactors, dust collectors, fresh chutes, and return chutes, effectively preventing the material from flying during transportation. When the vibration of the front and rear shafts of the main exhaust fan is relatively high, it will cause automatic tripping and shutdown. Due to reasons such as the long running time of large-sized motor and fan bearings and the difficult replacement and assembly, the vibration values of the front and rear shafts of the main exhaust fan gradually increase over time, which will cause alarms and even tripping, and cannot meet the requirements of production processes and environmental emissions. Summary of the Utility Model

[0003] The purpose of the utility model is to provide equipment for replacing and installing the bearings of the main exhaust fan in an aluminum electrolysis flue gas purification system to solve the above problems.

[0004] To achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0005] An equipment for replacing and installing the bearings of the main exhaust fan in an aluminum electrolysis flue gas purification system includes a workbench, a disassembly mechanism, a four-jaw coupling, and a support mechanism. The four-jaw coupling includes a coupling and screws circumferentially distributed on the outer periphery of the coupling. The disassembly mechanism is arranged above the workbench. The disassembly mechanism includes an end force-bearing plate, a reinforcing plate, and a tail force-bearing plate. A circular hole is arranged in the center of the end force-bearing plate. The reinforcing plate is attached to the side of the end force-bearing plate close to the tail force-bearing plate. A "U"-shaped clamping hole is arranged on the tail force-bearing plate, and the bottom end of the clamping hole is open. A number of through holes are arranged on the end force-bearing plate and the tail force-bearing plate. Four end through holes are circumferentially distributed on the outer circumference of the circular hole. The tail force-bearing plate is provided with three tail through holes matching the end through holes. The two ends of the screw are respectively inserted into the end through holes and the tail through holes, and nuts are arranged at the protruding ends of the screws. A jack is arranged between the reinforcing plate and the tail force-bearing plate, and the jack is surrounded by the screw inside; the support mechanism includes a support frame and a sleeper. A shallow groove is arranged on the top rod of the support frame, and the center lines of the shallow groove and the support frame are in the same plane as the center lines of the circular hole and the clamping hole. The sleeper is arranged on the ground on the side of the support frame away from the workbench.

[0006] To further implement the utility model, the support frame is of a square structure, and a number of straight rods and diagonal rods are cross-arranged inside the support frame.

[0007] To further implement the utility model, the shallow groove is "U"-shaped matching the diameter of the fan shaft or semi-circular matching the outer wall of the fan shaft.

[0008] To further implement the present utility model, the width of the card hole is smaller than the diameter of the fan shaft coupling.

[0009] To further implement the present utility model, the diameter of the tail end of the jack is smaller than the aperture of the fan shaft coupling.

[0010] To further implement the present utility model, the reinforcing plate is of a rectangular structure, a small hole is provided in the middle of the reinforcing plate, middle through holes are symmetrically provided on both sides of the small hole, and the screw rod passes through the middle through holes.

[0011] To further implement the present utility model, the screw rod is a double - headed screw rod.

[0012] To further implement the present utility model, the shallow groove is provided on the ejector rod close to the tail - end stress plate.

[0013] The beneficial effects of the present utility model compared with the prior art are as follows:

[0014] The support mechanism of the present utility model can ensure the effective support for the wind impeller, make the wind impeller perpendicular to the working surface, reduce displacement, provide a working surface for maintenance operations, and prevent personal injuries caused by unstable placement of the wind impeller; in the disassembly mechanism of the present utility model, the tail - end stress plate is used to clamp the coupling of the fan shaft or the motor shaft, the end - part stress plate and the jack cooperate to remove large - sized couplings and bearings, and the reinforcing plate and the four screw rods of the four - jaw coupling cooperate to improve the compressive resistance and stability of the whole device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is Figure 1 a partial enlarged view of part A in

[0017] Figure 3 is Figure 1 a partial enlarged view of part B in

[0018] Figure 4 is Figure 1 a partial enlarged view of part C in

[0019] The meanings of the reference numerals are as follows: 1, workbench; 2, four - jaw coupling; 3, coupling; 4, screw rod; 5, end - part stress plate; 6, reinforcing plate; 7, tail - end stress plate; 8, round hole; 9, card hole; 10, end - part through hole; 11, tail - end through hole; 12, nut; 13, jack; 14, support frame; 15, sleeper; 16, shallow groove; 17, small hole; 18, wind impeller; 19, fan shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] As Figures 1-4 shown, an installation equipment for replacing the fan bearing of the main exhaust fan in an aluminum electrolysis flue gas purification system includes a workbench 1, a disassembly mechanism, a four-jaw coupling 2, and a support mechanism. The four-jaw coupling 2 includes a coupling 3 and screws 4 circumferentially distributed on the outer periphery of the coupling 3. The screws 4 are double-headed screws. The disassembly mechanism is arranged above the workbench 1. The disassembly mechanism includes an end force-bearing plate 5, a reinforcing plate 6, and a tail force-bearing plate 7. A circular hole 8 is provided in the center of the end force-bearing plate 5. The reinforcing plate 6 is attached to the side of the end force-bearing plate 5 close to the tail force-bearing plate 7. A "U"-shaped clamping hole 9 is provided on the tail force-bearing plate 5. The bottom end of the clamping hole 9 is open. The width of the clamping hole 9 is smaller than the diameter of the fan shaft coupling. A number of through holes are provided on the end force-bearing plate 5 and the tail force-bearing plate 7. Four end through holes 10 are circumferentially distributed on the outer circumference of the circular hole 8. The tail force-bearing plate 7 is provided with three tail through holes 11 that cooperate with the end through holes 10. The reinforcing plate 6 is a rectangular structure. A small hole 16 is provided in the middle of the reinforcing plate 6. Middle through holes are symmetrically provided on both sides of the small hole 16. The two ends of the screw 4 are respectively passed through the end through holes 10 and the tail through holes 11. The middle of the screw 4 is passed through the middle through holes. A nut 12 is provided at the protruding end of the screw 4. A jack 13 is provided between the reinforcing plate 6 and the tail force-bearing plate 7. The jack 13 is surrounded inside the screw 4. The diameter of the tail end of the jack 13 is smaller than the aperture of the fan shaft coupling. The support mechanism includes a support frame 14 and sleepers 15. The support frame 14 is a square structure. A number of straight rods and inclined rods are cross-arranged inside the support frame 14. A shallow groove 15 is provided on the top rod of the support frame 14. The shallow groove 15 is provided on the top rod close to the tail force-bearing plate 7. The shallow groove 15 is a "U" shape that matches the diameter of the fan shaft or a semi-circular shape that matches the outer wall of the fan shaft. The central axes of the shallow groove 15 and the support frame 14 are in the same plane as the central axes of the circular hole 8 and the clamping hole 9. The sleepers 15 are provided on the ground on the side of the support frame 14 away from the workbench 1.

[0022] By hoisting the wind impeller 18 and placing it on the support frame 14, the main exhaust fan wind impeller is effectively fixed with the sleepers 15 soaked in asphalt. The four-jaw coupling 2 is heated, and the four-jaw coupling 2 is used to cooperate with the electric hydraulic jack 13 to remove the four-jaw coupling 2. The four-jaw coupling 2 is placed in a safe position. The bearings at the front and rear shafts of the fan shaft 19 are removed by gas welding cutting. The bearing locking device is removed. The bearing is heated with an eddy current bearing heater and hot-fitted. The bearing locking device is installed and locked with a locking piece. The shaft head is polished with sandpaper to remove rust and small burrs. Then the coupling is heated with a bearing heater and hot-fitted.

[0023] The workbench 1 can bear a weight of 0.5 tons and is used for personnel maintenance and the fixed placement of tools. The eddy current bearing heater heats large-sized bearings to achieve thermal assembly. The "four-jaw" coupling 3 is composed of high-strength steel plates, bolts, screws, etc. and can bear the pressure of a 100-ton electric hydraulic jack; the support frame 8 can bear a weight of at least 10 tons; the sleeper can effectively fix the impeller of the main exhaust fan.

Claims

1. A main exhaust fan bearing replacement and installation device for an aluminum electrolysis flue gas purification system, characterized in that: It includes a workbench (1), a disassembly mechanism, a four-jaw coupling (2) and a support mechanism. The four-jaw coupling (2) includes a coupling (3) and screws (4) evenly distributed circumferentially on the outer periphery of the coupling (3). The disassembly mechanism is arranged above the workbench (1). The disassembly mechanism includes an end force-bearing plate (5), a reinforcing plate (6) and a tail force-bearing plate (7). A round hole (8) is provided in the center of the end force-bearing plate (5). The reinforcing plate (6) is attached to the side of the end force-bearing plate (5) close to the tail force-bearing plate (7). A "U"-shaped clamping hole (9) is provided on the tail force-bearing plate (7). The bottom end of the clamping hole (9) is open. A number of through holes are provided on the end force-bearing plate (5) and the tail force-bearing plate (7). Four end through holes (10) are evenly distributed circumferentially on the outer periphery of the round hole (8). The tail force-bearing plate (7) is provided with three tail through holes (11) that cooperate with the end through holes (10). The two ends of the screw (4) are respectively inserted into the end through holes (10) and the tail through holes (11). A nut (12) is provided at the protruding end of the screw (4). A jack (13) is arranged between the reinforcing plate (6) and the tail force-bearing plate (7). The jack (13) is arranged around the inside of the screw (4). The support mechanism includes a support frame (14) and a sleeper (15). A shallow groove (16) is provided on the top rod of the support frame (14). The central axes of the shallow groove (16) and the support frame (14) are in the same plane as the central axes of the round hole (8) and the clamping hole (9). The sleeper (15) is arranged on the ground on the side of the support frame (14) away from the workbench (1).

2. The main exhaust fan bearing replacement and installation equipment for the aluminum electrolysis flue gas purification system according to claim 1, characterized in that: The support frame (14) is of a square structure, and a number of straight rods and diagonal rods are cross-arranged inside the support frame (14).

3. The main exhaust fan bearing replacement and installation equipment for the aluminum electrolysis flue gas purification system according to claim 1 or 2, characterized in that: The shallow groove (16) is "U"-shaped and matches the diameter of the fan shaft or semi-circular and matches the outer wall of the fan shaft.

4. The main exhaust fan bearing replacement and installation equipment for the aluminum electrolysis flue gas purification system according to claim 3, characterized in that: The width of the clamping hole (9) is smaller than the diameter of the fan shaft coupling.

5. The main exhaust fan bearing replacement and installation equipment for the aluminum electrolysis flue gas purification system according to claim 4, characterized in that: The diameter of the tail end of the jack (13) is smaller than the aperture of the fan shaft coupling.

6. The main exhaust fan bearing replacement and installation equipment for the aluminum electrolysis flue gas purification system according to claim 5, characterized in that: The reinforcing plate (6) is of a rectangular structure. A small hole (17) is provided in the middle of the reinforcing plate (6). Middle through holes are symmetrically arranged on both sides of the small hole (17). The screw (4) is inserted into the middle through holes.

7. The main exhaust fan bearing replacement and installation equipment for the aluminum electrolysis flue gas purification system according to claim 6, characterized in that: The screw (4) is a double-headed screw.

8. The main exhaust fan bearing replacement and installation equipment for the aluminum electrolysis flue gas purification system according to claim 7, characterized in that: The shallow groove (16) is provided on the top rod on the side close to the tail force-bearing plate (7).

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