Miniaturized impact type self-cleaning molten metal slag salvaging method and device

Abstract

The invention discloses a miniaturized impact type self-cleaning molten metal slag salvaging method and device. A device body comprises a stand column, a horizontal beam, a slag salvaging vehicle, a lifting stand column, a slag salvaging mechanism and a driving device of the slag salvaging mechanism. A narrow slag salvaging mechanism is invented by adopting a variable-speed slag rake driving device, a slag salvaging rake with the weight increased at the end part and a precise mechanical control measure, and the slag salvaging method can realize slow and stable slag salvaging and can also rapidly and vigorously knock slag. And on the basis of mixing driven by an electric, pneumatic or hydraulic power unit, the occupied plane and space of the equipment are further reduced, the slag salvaging capacity, reliability and operation safety of the slag salvaging machine are improved, personnel intervention slag removal and the manufacturing cost of the slag salvaging machine are reduced, and conditions are created for automatic and unmanned production.

Description

Technical Field

[0001] This invention relates to a miniaturized impact-type self-cleaning molten metal slag removal method and apparatus, mainly used for molten metal slag removal, but can also be used in other similar applications. Background Technology

[0002] The slag on the surface of molten metal in a ladle or induction furnace is an impurity precipitated during the metallurgical reaction process. If not removed in time, it will not only affect the quality of the metal but also the smelting speed and energy consumption. Furthermore, if the slag, if not cleaned in time, solidifies and forms a crust, it poses a safety hazard of explosion, affecting the safety of induction furnace production. Therefore, slag removal is a problem that has arisen with the development of metallurgical technology and requires continuous efforts to overcome.

[0003] Slag removers, as the mainstream equipment for cleaning floating slag from the surface of molten metal in metal smelting, suffer from the problem of highly viscous slag adhering to the slag rake and being difficult to clean. Currently, cleaning is done manually, which is difficult, labor-intensive, and time-consuming, hindering the development of efficient production and automated or unmanned operation. Moreover, in practical applications of slag removers, the difficulty of manually cleaning slag adhering to the rake directly affects the work enthusiasm of operators and the promotion and application of mechanized slag removal.

[0004] Due to the limitations of the induction furnace platform's planar area and three-dimensional space, the size of the slag removal machine is also limited, which in turn limits the size and weight of the slag removal mechanism, necessitating a miniaturized slag removal machine and mechanism. Furthermore, traditional hydraulic drives require a complete hydraulic station and hydraulic pipelines, occupying a large area and space, which is not conducive to equipment miniaturization. They also present problems such as high equipment cost, heavy maintenance workload, and the safety hazard of flammable hydraulic oil.

[0005] Currently available small-scale slag removal devices on the market are all-electric robots, which cannot meet the requirements of high-force, high-temperature and harsh working environments, and the equipment reliability is also poor with a high failure rate. Summary of the Invention

[0006] This invention proposes a miniaturized impact-type self-cleaning molten metal slag removal method and device. By utilizing variable speed drive, it can remove slag at both slow speeds and at high speeds through impact cleaning. By adjusting the speed between slow and fast speeds, it combines slow rotation slag removal with the self-cleaning function of two rotating slag rakes striking each other at high speeds, which perfectly meets the purpose of arranging the slag removal drive device in a narrow space.

[0007] In addition, the traditional slag removal machine structure is organically combined with electric, pneumatic or hydraulic power unit drive devices to give full play to their advantages and avoid their disadvantages, so that they complement each other, eliminating the need for traditional hydraulic systems and reducing equipment investment, and further reducing the space occupied in both plane and three-dimensional space.

[0008] The technical solution of this invention is as follows:

[0009] A miniaturized impact-type self-cleaning molten metal slag removal method and apparatus includes a column 1, a horizontal beam 2, a slag removal vehicle 3, a lifting column 4, a slag removal mechanism 5, a slag rake 6, a slag rake drive device 7, a counterweight hammer 8, a rotary drive device 9, a moving vehicle drive device 10, and a lifting drive device 11.

[0010] The miniaturized impact-type self-cleaning molten metal slag removal method and device includes a main body comprising a column 1, a horizontal beam 2 connected above the column 1, a slag removal cart 3 that can move back and forth along the horizontal beam 2, a lifting column 4 that can be raised and lowered in the middle of the slag removal cart 3, a slag removal mechanism 5 connected below the lifting column 4, a pair of slag rakes 6 and a slag rake drive device 7 rotatably mounted on the slag removal mechanism 5, a weight-adding hammer 8 provided at the front end of the slag rakes 6, the column 1 being driven by a rotary drive device 9, the slag removal cart 3 being driven by a moving vehicle drive device 10, the lifting column 4 being driven by a lifting drive device 11, and a pneumatic control valve 13 in the control system 12 realizing the switching of the slag rake drive device 7 between fast and slow speeds and the on / off state.

[0011] As a further improvement to this miniaturized impact-type self-cleaning molten metal slag removal method and device: it adopts electric and pneumatic drive, eliminating the hydraulic system, which not only reduces the space occupied by the slag removal machine in both plane and three-dimensional space, but also eliminates the need for pipeline laying from the hydraulic station to the slag removal machine, and saves equipment costs.

[0012] As a further improvement to this miniaturized impact-type self-cleaning molten metal slag removal method and device: the hydraulic power unit drives the slag removal machine to rotate, the column to lift, and the slag removal mechanism to move, which solves the problems of large footprint, high cost, and long hydraulic medium pipeline that is prone to oil leakage caused by hydraulic drive.

[0013] As a further improvement to this miniaturized impact-type self-cleaning molten metal slag removal method and device: it is arranged in a narrow slag removal mechanism 5 to form a high-efficiency structure with one drive and two uses; it adopts electrification and automation control to meet the dual-function requirements of slag rake drive.

[0014] Compared with the prior art, the present invention has the following positive effects: (1) By adopting a pneumatic drive for slag removal, a dual-purpose drive device is formed, and a dual-purpose drive power is successfully arranged in the narrow slag removal mechanism where weight and space are limited, thus realizing the miniaturization of the slag removal machine and meeting its requirements for slow-speed rotating slag rake slag removal and fast-speed rotating slag rake knocking slag, thus having the positive effect required for self-cleaning slag function; (2) The combination of electric and pneumatic power replaces the large-area hydraulic system, realizing the miniaturization of the induction furnace platform from the perspective of the overall equipment, while also reducing the equipment cost and solving the safety problems of difficult equipment layout of hydraulic power and easy leakage and flammability of hydraulic oil; (3) The equipment is simplified, the reliability is improved, and it is easy to maintain; (4) It creates conditions for automated and unmanned production; (5) The use of hydraulic power unit to replace large hydraulic station is also a means of miniaturization. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this device. Detailed Implementation

[0016] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings:

[0017] Example 1

[0018] The slag remover is fixedly arranged on the furnace platform to remove slag from the molten metal inside the induction furnace.

[0019] The electric rotary drive device 9 drives the main column 1 to rotate, the electric moving vehicle drive device 10 pushes the slag removal vehicle 3 forward, and the electric lifting drive device 11 pushes the lifting column 4 down, so that the slag removal machine carrying the slag removal mechanism 5 enters the slag removal station; the pneumatic slag rake drive device 7 drives the two slag rakes 6 to slowly close and remove slag, the electric lifting drive device 11 pushes the lifting column 4 up, the electric rotary drive device 9 drives the main column 1 to rotate, so that the slag removal mechanism 5 enters the slag discharge station, the slag rake drive device 7 drives the two slag rakes to slowly open and discharge slag, and the slag rake drive device 7 quickly drives the two slag rakes to impact and knock off slag until the slag sticks to the slag rake 6 and is removed.

[0020] At the same time, by utilizing the end weight of the slag rake 6 and the added weight of the weight-adding hammer 8, the rapidly rotating slag rake 6 generates a flywheel-like impact force, further improving the slag cleaning effect.

[0021] Preferably, the lifting column 4 and the slag removal mechanism 5 can move synchronously with the slag removal vehicle 3.

[0022] Example 2

[0023] The slag remover, used for removing molten metal from the induction furnace, is fixedly mounted on the furnace platform. The rotary drive unit 9, the moving vehicle drive unit 10, and the lifting drive unit 11 are driven by hydraulic power units, while the slag rake drive unit 7 is pneumatic.

[0024] Example 3

[0025] The slag remover, used for removing molten metal from the induction furnace, is fixedly mounted on the furnace platform. The rotary drive 9, the moving vehicle drive 10, the lifting drive 11, and the slag rake drive 7 are all pneumatic.

[0026] Example 4

[0027] The slag remover, used for removing molten metal from the induction furnace, is fixedly mounted on the furnace platform. The rotary drive unit 9, the moving vehicle drive unit 10, the lifting drive unit 11, and the slag rake drive unit 7 are all electrically powered. The motor for the slag rake drive unit 7 is a speed-regulating motor.

[0028] Example 5

[0029] The slag remover, used for removing molten metal from the induction furnace, is fixedly mounted on the furnace platform. The rotary drive unit 9, the moving vehicle drive unit 10, the lifting drive unit 11, and the slag rake drive unit 7 are all driven by hydraulic power units. The slag rake drive unit 7 is a hydraulic device with variable speed capability.

[0030] Example 6

[0031] As a slag remover for molten metal ladle, the slag remover is fixedly arranged on the platform, and the metal ladle is placed on the side of the platform.

Claims

1. A miniaturized impact-type self-cleaning molten metal slag removal method and device, the main body of which includes a column (1), a horizontal beam (2) fixed above it, a slag removal vehicle (3) movable along the direction of the horizontal beam (2) and capable of moving back and forth, a lifting column (4) that can be raised and lowered is connected in the middle of the slag removal vehicle (3), a slag removal mechanism (5) is connected below the lifting column (4), and a pair of slag rakes (6) are rotatably installed on the slag removal mechanism (5). The technical feature is that the slag rake driving device (7) that drives a set of relatively rotating slag rakes (6) is set to be variable speed so that the driving device can meet the dual functions of slow rotation slag removal and fast rotation impact slag removal, so as to meet the requirement of arranging a dual-function slag rake driving device (7) in the narrow space of the slag removal mechanism (5).

2. The miniaturized impact-type self-cleaning molten metal slag removal method and device as described in claim 1, the technical feature of which is: by utilizing the end weight of the slag rake (6), a pair of slag rakes (6) rotate in opposite directions to achieve a rapid rotating flywheel-type double impact force to knock and clean the slag, thereby removing the high viscosity metal slag adhering to the slag rake (6) and giving the slag remover the purpose of having a self-cleaning function.

3. The miniaturized impact-type self-cleaning molten metal slag removal method and device as described in claim 1 is characterized in that: in order to further improve the impact effect of the slag rake (6) in self-cleaning slag, a weight-adding block (8) is provided at its end.

4. The miniaturized impact-type self-cleaning molten metal slag removal method and apparatus as described in claim 1, characterized in that: the rotary drive device (9) of the main column (1), the moving vehicle drive device (10) of the slag removal vehicle (3) and the lifting drive device (11) of the lifting column (4) are electric or pneumatic.

5. The miniaturized impact-type self-cleaning molten metal slag removal method and device as described in claim 1, the technical feature of which is that the fast and slow speeds are achieved by the pneumatic control valve (13) in the control system (12) of the main body of the device, which realizes the switching and on / off of slow and fast speeds.

6. The miniaturized impact-type self-cleaning molten metal slag removal method and device as described in claim 1, characterized in that: the lifting column (4) and the slag removal mechanism (5) can move with the slag removal vehicle (3).

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