In-tank slag removal vehicle for magnesium reduction tank

Abstract

The invention provides an in-tank slag removal vehicle for a magnesium reduction tank. The in-tank slag removal vehicle comprises a rail, a flat car, a scissor platform and a rotary slag removal assembly. The flatcar moves along the track, a scissor-fork platform is installed on the flatcar, and a rotary slag removal assembly is installed on the scissor-fork platform and pushes the rotary slag removal assembly to move in a lifting mode; the rotary slag removal assembly comprises a scraper, a rotating shaft, a slewing bearing, an electric cylinder and a rotating assembly; the rotating assembly drives the slewing bearing to rotate, and the slewing bearing drives the rotary scraper, the rotating shaft and the electric cylinder to rotate integrally. And the electric cylinder is connected with the scraper and drives the scraper to axially stretch out and draw back. Through the return-to-zero stop block, the proximity switch and the rotary encoder for the wheels, the slag removal device can be automatically positioned and moved to the slag removal position according to the position of the reduction tank.

Description

Technical Field

[0001] The invention relates to the field of reduction tank cleaning devices, in particular to a tank slag cleaning vehicle for a magnesium reduction tank. Background Art

[0002] In the process of magnesium smelting by the Pidgeon process, the removal of slag from the reduction tank and the cleaning of the adhered residue inside the tank are important steps in magnesium smelting.

[0003] At present, the slag removal of the reduction tank is mainly done manually. Since the slag temperature is about 1200℃, a large amount of high-temperature waste slag and dust will appear during the slag removal. The personnel must use a steel shovel to remove the slag from the tank body one by one at a distance from the reduction tank. The labor intensity is high, the work efficiency is low, and the working environment is poor. The second is the mechanical slag removal method, which basically simulates the principle of manual slag removal, and assists with some support points and rotating devices to remove the slag. However, this mechanical slag removal method cannot automatically position and continuously remove the slag, and it is very unstable when operating in a dusty environment. For example, the patent CN202229616U mentions a slag removal device for a magnesium smelting reduction tank, which can only remove slag but cannot achieve positioning and movement; the patent CN206447924U mentions a slag removal machine for a reduction tank, which cannot achieve positioning and movement to remove slag. Therefore, it is necessary to provide a device that can automatically position, move and continuously remove slag. Summary of the invention

[0004] In view of the defects in the prior art, an object of the present invention is to provide a slag cleaning vehicle for a magnesium reduction tank.

[0005] According to the present invention, a tank slag cleaning vehicle for a magnesium reduction tank comprises: a track, a flat car, a scissor platform and a rotating slag cleaning component;

[0006] The flat car moves along the track, a scissor platform is installed on the flat car, a rotary slag cleaning component is installed on the scissor platform and the rotary slag cleaning component is pushed to move up and down;

[0007] The rotary slag cleaning assembly comprises: a scraper, a rotating shaft, a slewing bearing, an electric cylinder and a rotating assembly;

[0008] The rotating assembly drives the slewing bearing to rotate, and the slewing bearing drives the rotating scraper, the rotating shaft and the electric cylinder to rotate as a whole;

[0009] The electric cylinder is connected to the scraper and drives the scraper to extend and retract axially.

[0010] Preferably, the output end of the electric cylinder is connected to the scraper via a connecting shaft, and the output end of the electric cylinder and the connecting shaft as well as the connecting shaft and the scraper are connected via a connecting pin.

[0011] Preferably, the rotating assembly comprises a rotating motor and a gear;

[0012] A gear is installed at the output end of the rotating motor, the gear is meshed with the slewing bearing, the rotating shaft is coaxially installed on one side of the slewing bearing, and an adjustment block is installed between the rotating shaft and the rod of the scraper;

[0013] The rotating motor adopts a variable frequency motor, and an electromagnetic brake is coaxially mounted on the rotating motor.

[0014] Preferably, the scraper is made of high temperature resistant material.

[0015] Preferably, the scissor platform comprises: a scissor structure and a mounting platform;

[0016] One end of the scissor structure along the telescopic direction is installed on the flat car, and the other end is installed on the mounting platform, and the rotating slag cleaning assembly is installed on the mounting platform;

[0017] Two connection end points are arranged at both ends of the scissor-fork structure, and the two connection end points at each end of the scissor-fork structure are allowed to move toward or away from each other.

[0018] Preferably, a guide column is installed on the flat car in the vertical direction, and a guide column wheel is slidably installed on the guide column, and the guide column wheel is connected to the end of the scissors platform away from the flat car.

[0019] Preferably, a heat insulation cover is installed at intervals on the side of the slewing bearing facing the scraper.

[0020] Preferably, the flat car comprises: a driven wheel assembly, a frame, a driving wheel assembly, a proximity switch and a rotary encoder;

[0021] A driven wheel assembly is installed at one end of the bottom of the frame, and a driving wheel assembly is installed at the other end;

[0022] A proximity switch is installed on the vehicle frame, and a rotary encoder is installed on the driven wheel assembly or the driving wheel assembly.

[0023] Preferably, a zeroing stopper for cooperating with a proximity switch is installed at the starting end of the track.

[0024] Preferably, an electric control cabinet is installed on the flat car, and the electric control cabinet is electrically connected to the electric cylinder, the rotating assembly, the driving wheel assembly, the proximity switch and the rotary encoder.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. This application can automatically locate and move to the slag removal position according to the position of the reduction tank through the zeroing block, proximity switch and wheel rotary encoder;

[0027] 2. This application adopts pure mechanical mechanism in the heat-affected area of ​​slag cleaning, and the scraper is made of high-temperature resistant materials to ensure the stable operation of the equipment in high-temperature and high-dust environment;

[0028] 3. The present application sets guide wheels and guide columns to cooperate with the scissor platform to ensure the stability of the scissor platform during the slag cleaning process;

[0029] 4. This application provides a heat insulation cover at the slag falling position to ensure the safe operation of the equipment when slag falls;

[0030] 5. This application uses a servo electric cylinder to lift the scraper, which can control the lifting speed and height of the scraper according to the needs of slag cleaning. The rotation of the scraper is equipped with a variable frequency motor and brake, which can adjust the rotation speed of the scraper. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0032] Figure 1 This is the main view of the tank slag cleaning vehicle;

[0033] Figure 2 This is the side view of the tank slag cleaning vehicle;

[0034] Figure 3 This is a top view of the tank slag cleaning vehicle;

[0035] Figure 4 This is a schematic diagram of the working status of the tank slag cleaning vehicle;

[0036] Figure 5 This is a bottom view of the flat car;

[0037] Figure 6 It is the side view of the flat car;

[0038] Figure 7 This is the main view of the flat car;

[0039] Figure 8 This is the front view of the rotary slag cleaning component;

[0040] Fig. 9 It is a side view of the rotary slag cleaning assembly;

[0041] Fig.10 It is a top view of the rotary slag cleaning assembly;

[0042] As shown in the figure:

[0043] DETAILED DESCRIPTION

[0044] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0045] When the slag cleaning vehicle of this embodiment cleans slag, it is necessary to extend the scraper 1 into the slag cleaning area in the reduction tank 9, and rotate the scraper 1 after reaching the position to complete the slag cleaning. After the slag cleaning of a single reduction tank 9 is completed, the slag cleaning vehicle also needs to move to other reduction tanks 9 via the track 1 to clean slag.

[0046] like Figure 1-4 As shown, this embodiment includes: a track 1, a flat car 2, a scissors platform 3, a heat insulation cover 4, a rotary slag cleaning assembly 5, a guide column 6, a guide column wheel 7 and an electric control cabinet 8; the flat car 2 includes: a driven wheel assembly 21, a frame 22, a driving wheel assembly 23, a proximity switch 25 and a rotary encoder 26; the rotary slag cleaning assembly 5 includes: a scraper 51, an adjustment block 52, a rotating shaft 53, a connecting pin 54, a connecting shaft 55, a slewing bearing 56, an electric cylinder 57 and a rotating assembly 58.

[0047] A plurality of reduction tanks 9 are suspended above the track 1, and the flat car 2 moves along the track 1 to clean the reduction tanks 9 one by one. The movement of the flat car 2 along the track 1 solves the problem of multiple reduction tanks 9 sharing a slag cleaning car. A scissor platform 3 is installed on the flat car 2, and a rotating slag cleaning component 5 is installed on the scissor platform 3 to push the rotating slag cleaning component 5 to move up and down. The scraper 51 of the slag cleaning component 5 can be lifted and lowered over a large span through the scissor platform 3; a guide column 6 is installed in the vertical direction on the flat car 2, and a guide column wheel 7 is slidably installed on the guide column 6. The guide column wheel 7 is connected to the end of the scissor platform 3 away from the flat car 2, which ensures the stability of the scissor platform 3 during the slag cleaning process.

[0048] like Figure 5-7 A driven wheel assembly 21 is installed at one end of the bottom of the frame 22, and a driving wheel assembly 23 is installed at the other end; a proximity switch 25 is installed on the frame 22, and a rotary encoder 26 is installed on the driven wheel assembly 21 or the driving wheel assembly 23. A zeroing block 25 for cooperating with the proximity switch 25 is installed at the starting end of the track 1.

[0049] Positioning principle: the position of the reduction tank 9 is fixed, and the flat car 2 is moving on the track 1. A zeroing block 24 is provided at the starting point of the track 1. When the proximity switch 25 of the flat car 2 contacts the zeroing block 24, the position of the flat car 2 relative to the reduction tank 9 is determined. A rotary encoder 26 is installed on the driving wheel assembly 23 or the driven wheel assembly 21 of the flat car 2. When the driving wheel assembly 23 or the driven wheel assembly 21 rotates, the rotary encoder 26 measures the number of rotations of the driving wheel assembly 23 or the driven wheel assembly 21. The diameter of the driving wheel assembly 23 or the driven wheel assembly 21 is fixed. Knowing the rotation speed and diameter of the driving wheel assembly 23 or the driven wheel assembly 21, the PLC can calculate the distance traveled by the driving wheel assembly 23 or the driven wheel assembly 21, that is, the distance traveled by the flat car 2. In this way, the PLC can control the distance traveled by the flat car 2 by controlling the number of rotations of the driving wheel assembly 23 through the motor. The relative distance between the zeroing block 24 and the reduction tank 9 is fixed and known, and the flat car 2 only needs to travel this known distance from the zeroing block 24 to accurately move to the reduction tank 9 position.

[0050] like Figure 8-10 The rotating assembly 58 drives the slewing bearing 56 to rotate, and the slewing bearing 56 drives the scraper 51, the rotating shaft 53, the connecting shaft 55 and the electric cylinder 57 to rotate as a whole. The electric cylinder 57 is connected to the scraper 51 and drives the scraper 51 to extend and retract axially. The double lifting mode of the scissor platform 3 and the electric cylinder 57 solves the problem of slag cleaning in a large stroke and a narrow space. The output end of the electric cylinder 57 is connected to the scraper 51 through the connecting shaft 55, and the output end of the electric cylinder 57 and the connecting shaft 55 as well as the connecting shaft 55 and the scraper 51 are connected through the connecting pin 54. The rotating assembly 58 includes a rotating motor and a gear; the output end of the rotating motor is equipped with a gear, and the gear is meshed with the slewing bearing 56. The rotating motor adopts a variable frequency motor, and an electromagnetic brake is coaxially installed on the rotating motor. When the electromagnetic brake is powered on, the brake releases the motor shaft, and the rotating motor can drive the scraper to rotate. When the electromagnetic brake is powered off, the brake holds the motor shaft tightly, and the scraper cannot move at this time, so that the scraper can be kept stable and not shaken when the vehicle moves. The variable frequency motor controls the speed through the frequency converter, and the speed change of the variable frequency motor controls the speed of the scraper 51. The rotating shaft 53 is coaxially installed on one side of the slewing bearing 56. An adjustment block 52 is installed between the rotating shaft 53 and the rod of the scraper 51. The adjustment block 52 is used to adjust the gap between the scraper 51 and the rotating shaft 53, which solves the problem of blocking caused by micro-deformation of the scraper 51 and the problem that the scraper 51 cannot be interchanged due to welding deformation of the scraper 51, that is, the gap between the scraper 51 and the rotating shaft 53 is controlled by increasing or decreasing the number of gaskets at the rear of the adjustment block 52. When the scraper 51 is deformed and blocked, the adjustment block 52 can be dismantled to make the scraper 51 easier to replace. The slewing bearing 56 is spaced apart and a heat insulation cover 4 is installed toward one side of the scraper 51.

[0051] The scissors-type platform 3 comprises: a scissors-type structure and a mounting platform; one end of the scissors-type structure along the telescopic direction is installed on the flat car 2, and the other end is installed on the mounting platform, and the rotating slag cleaning component 5 is installed on the mounting platform; two connecting end points are arranged at both ends of the scissors-type structure, and the two connecting end points at each end of the scissors-type structure are allowed to move toward or away from each other.

[0052] An electric control cabinet 8 is installed on the flat car 2 , and the electric control cabinet 8 is electrically connected to the electric cylinder 57 , the rotating assembly 58 , the driving wheel assembly 23 , the proximity switch 25 and the rotary encoder 26 .

[0053] In one embodiment, the scraper 51 is made of a high temperature resistant material to prevent the scraper 51 from softening at high temperatures, such as 601 nickel-chromium-iron alloy, GH1131 alloy, and GH4099 alloy.

[0054] Working principle:

[0055] The flat car 2 is installed with a scissor platform 3, a rotating slag cleaning assembly 5, a guide column 6 and a guide wheel 7; the flat car 2 is driven by the driving wheel assembly 23 to move along the track 1 to the bottom of the reduction tank 9, at which time the electric cylinder 57 is running, and the scraper 51 is extended through the connecting pin 54 and the connecting shaft 55, at which time the scissor platform 3 is raised, and the scraper 1 is pushed into the highest point of the slag cleaning area in the reduction tank 9, and after reaching the highest point, the rotating assembly 58 drives the scraper 51 to rotate and clean the slag through the slewing bearing 56 and the rotating shaft 53, and during the slag cleaning, the scraper 51 rotates and descends through the retraction of the scissor platform 3 until it reaches the bottom of the slag cleaning area, and after the bottom slag cleaning is completed, the electric cylinder 57 retracts, and the scissor platform 3 descends to the lowest position, and the slag cleaning of a single reduction tank 9 is completed. The above process is repeated for the slag cleaning of other reduction tanks 9.

[0056] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0057] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A slag removal vehicle for a magnesium reduction tank, characterized in that: include: Track (1), flat car (2), scissor platform (3) and rotary slag cleaning component (5); The flat car (2) moves along the track (1), a scissor platform (3) is installed on the flat car (2), and a rotary slag cleaning component (5) is installed on the scissor platform (3) to push the rotary slag cleaning component (5) to move up and down; The rotary slag cleaning assembly (5) comprises: a scraper (51), a rotating shaft (53), a slewing bearing (56), an electric cylinder (57) and a rotating assembly (58); The rotating assembly (58) drives the slewing bearing (56) to rotate, and the slewing bearing (56) drives the scraper (51), the rotating shaft (53) and the electric cylinder (57) to rotate as a whole; The electric cylinder (57) is connected to the scraper (51) and drives the scraper (51) to axially extend and retract.

2. The in-tank slag cleaning vehicle for a magnesium reduction tank according to claim 1, characterized in that: The output end of the electric cylinder (57) is connected to the scraper (51) via a connecting shaft (55), and the output end of the electric cylinder (57) and the connecting shaft (55) as well as the connecting shaft (55) and the scraper (51) are connected via a connecting pin shaft (54).

3. The in-tank slag cleaning vehicle for a magnesium reduction tank according to claim 1, characterized in that: The rotating assembly (58) includes a rotating motor and a gear; A gear is installed at the output end of the rotating motor, the gear is meshed with the slewing bearing (56), the rotating shaft (53) is coaxially installed on one side of the slewing bearing (56), and an adjustment block (52) is installed between the rotating shaft (53) and the rod portion of the scraper (51); The rotating motor adopts a variable frequency motor, and an electromagnetic brake is coaxially mounted on the rotating motor.

4. The in-tank slag cleaning vehicle for a magnesium reduction tank according to claim 1, characterized in that: The scraper (51) is made of high temperature resistant material.

5. The in-tank slag cleaning vehicle for a magnesium reduction tank according to claim 1, characterized in that: The scissor-type platform (3) comprises: a scissor-type structure and a mounting platform; One end of the scissor structure along the telescopic direction is mounted on the flat car (2), and the other end is mounted on the mounting platform, and the rotating slag cleaning component (5) is mounted on the mounting platform; Two connection end points are arranged at both ends of the scissor-fork structure, and the two connection end points at each end of the scissor-fork structure are allowed to move toward or away from each other.

6. The in-tank slag cleaning vehicle for a magnesium reduction tank according to claim 1, characterized in that: A guide column (6) is installed on the flat car (2) in the vertical direction, and a guide column wheel (7) is slidably installed on the guide column (6), and the guide column wheel (7) is connected to the end of the scissor platform (3) away from the flat car (2).

7. The in-tank slag cleaning vehicle for a magnesium reduction tank according to claim 1, characterized in that: A heat insulation cover (4) is installed at intervals on the side of the slewing support (56) facing the scraper (51).

8. The in-tank slag cleaning vehicle for a magnesium reduction tank according to claim 1, characterized in that: The flat car (2) comprises: a driven wheel assembly (21), a frame (22), a driving wheel assembly (23), a proximity switch (25) and a rotary encoder (26); A driven wheel assembly (21) is installed at one end of the bottom of the vehicle frame (22), and a driving wheel assembly (23) is installed at the other end; A proximity switch (25) is installed on the vehicle frame (22), and a rotary encoder (26) is installed on the driven wheel assembly (21) or the driving wheel assembly (23).

9. The in-tank slag cleaning vehicle for a magnesium reduction tank according to claim 8, characterized in that: A zero return block (25) for cooperating with a proximity switch (25) is installed at the starting end of the track (1).

10. The in-tank slag cleaning vehicle for a magnesium reduction tank according to claim 8, characterized in that: An electric control cabinet (8) is installed on the flat car (2), and the electric control cabinet (8) is electrically connected to the electric cylinder (57), the rotating assembly (58), the driving wheel assembly (23), the proximity switch (25) and the rotary encoder (26).

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