Cathode lifting device used for aluminum reduction cell

Abstract

The invention relates to a cathode lifting device used for an aluminum reduction cell, comprising a motor, ball screw jacks and triangle plates. The motor is connected with two sets of worm-and-wheel gears parallel with two sides of the reduction cell by couplings. The extension end of each set of worm-and-wheel gear is connected with the left and right of the two sets of ball screw jacks. The extension ends of the ball screw jacks are connected with pull rods below which the triangle plates are arranged. The triangle plates are installed on a long axis and rotate around the long axis. The long axis is fixed on a crossbeam by a supporting axis seat. The triangle plates are connected with bus hanger plates to drive the bus hanger plates to move vertically. The worm-and-wheel gears at two sides drive four sets of ball screw gears and the load borne by each set of ball screw gear is a quarter of the total load of the cathode lifting device, thus avoiding the ball screw gears from resulting in such detects as complex gears and large external dimensions due to too heavy load. The cathode lifting device is especially suitable for the aluminum reduction cell with current intensity more than 300kA.

Description

technical field [0001] The invention relates to an anode lifting device for an aluminum electrolytic cell, and is especially suitable for an anode lifting device for an aluminum electrolytic cell with a current intensity of 400kA or above. Background technique [0002] The Hall-Heroult aluminum electrolytic cell is the main equipment in the aluminum industry. It uses a carbon anode and a carbon cathode as the electrolytic anode and cathode. It adopts the cryolite-alumina molten salt electrolysis method, and direct current is passed into the electrolytic cell. A chemical reaction occurs to produce liquid aluminum on the cathode. In the production process of the electrolytic cell, the carbon anode participates in the chemical reaction and is continuously consumed. To keep the distance between the cathode and the anode constant, it is necessary to control the anode's lifting to achieve, and the anode's lifting is completed by the anode lifting device used in the electrolytic ce...

AI Technical Summary

Problems solved by technology

Because the motor is at the end of this lifting device, only one or two sets of ball screw jacks can be connected, and each set of ball screw jacks needs to bear half or all of the load of the anode lifting device, while the ball screw jack The maximum load of the heavy device is limited. When the current intensity of the electrolytic cell exceeds 400kA, if two sets of ball screw jacks are used to lift the full load of the anode lifting device, the existing ball screw jacks cannot achieve it, and If it is redesigned, it will result in a huge organization and high cost

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