SU326247A1 - MACHINE FOR MAINTENANCE OF ALUMINUM ELECTROLYZERS - Google Patents

Description

The known machine for the maintenance of aluminum electrolysis cells according to ed. St. No. 241695, comprising a self-propelled gantry frame on which a working body with a mechanism for - destruction of the electrolyte crust, a mechanism for loading alumina into the electrolyzer and tray feeders for loading the anode mass into the casing of the self-burning anode are mounted.

The proposed machine is characterized in that it is equipped with a device for automatically raising the working element of the crust breaking mechanism, made in the form of a rotating stop which runs electrically on the electrolytic wall, connected electrically to the end switch of the hydraulic cylinder for raising the working element. This prevents the mechanism for breaking the electrolyte crust against the end wall of the electrolyzer from being hit.

FIG. 1 shows the mechanism for breaking the electrolyte crust; in fig. 2 - the proposed machine.

The machine for servicing aluminum electrolysis cells includes a mechanism for breaking the electrolyte crust, consisting of a working member, a frame / hinged on the machine portal 2, a deflecting hydraulic cylinder 3 and a hydraulic cylinder 4 for raising and lowering the working member. The working body contains a disk 5 that serves to destroy the crust, a gearbox 6, an electric motor 7 and a frame 8. 9 closes the disk 5 and prevents the alumina disk from being carried away from the electrolyzer. The frame 8 is pivotally suspended on the rod of the hydraulic cylinder 4 and can be moved along the frame guides /. The cylinder 4 is controlled by an electromagnetic spool} 0. To fix the working body in any position of the rod height of the hydraulic cylinder 4, it is locked with a back operated valve. For the automatic lifting of the operating element, or the destruction of the electrolyte crust, at the end side 12, an emphasis 14 is mounted on the electrolyzer 13, and

The frame of the machine is attached to the bracket 15, on which the pivot arm 16 is hinged. T he 17 is connected with a cable 19 with a lever of the end switch 20, the electrical contact of which is mounted in the control circuit of the electromagnet 21, including the spool 10 for supplying oil to the rod end of the hydraulic cylinder 4.

As the machine moves along a row of electrolyzers, the driver controls the punching operation of the electrolyte crust from the cab. By turning on the electromagnet 22 of the spool 10, the oil enters the piston working unit through the guides of the frame 1. At the same time, the oil from the rod cavity of the hydraulic cylinder 4 is freely drained through the valve //, since the latter is opened by the pressure of the oil coming through the control line 24. The disk 5 is lowered onto the electrolyte crust. When the electromagnets of the spool 10 are disconnected, the working element with the disk 5 is fixed in height in the desired position. since the valve 11 locks the rod cavity of the hydraulic cylinder 4. The disk 5 is mounted across the width of the electrolyte crust by the deflecting hydraulic cylinder 3. The disk 5 is driven by the activation of the electric motor 7. The electrolyte crust is cut during movement of the 15 mashins along the row of electrolyzers. Alumina, captured by the disk, is poured through the casing 9 back into the electrolyzer. When the disk 5 approaches the frontal side 12 of the electrolyzer, the emphasis 16 protrudes on the support 14, 20 rotates and acts on the thrust 17,. stretching the spring 18, the cable 19 is loosened. In this case, the lever of the limit switch 20, which is in the extreme position under the action of the cable 19 and the spring 18, returns under the action of the spring embedded in the limit switch 20 to the middle position, closes, and the electrical contact in the control circuit of the electromagnet 21 closes. the spool 10 to the oil supply to the rod end of the hydraulic cylinder 4 through the valve 11, opened by the flow of oil. The operating member is raised and prevents the accidental drive of the disk 5 on the end wall of the electrolyzer. Maschina moves to the next electrolyzer. In this case, the anvil 16 rotates and disengages with the anvil 14, and under the action of the spring 18 returns to its original position. The cable 19 is tensioned, returning the limit switch lever 20 to the extreme position. Then the cycle of operation is repeated. The subject of the invention is a machine for servicing aluminum electrolysis cells according to the author. St. No. 241695, characterized in that, in order to prevent the mechanism for destroying the electrolyte crust from hitting the end wall of the electrolyzer, it is provided with a device for automatically raising the working element of the crust destruction mechanism, made in the form of a pivoting stop connected electrically to the end switch cylinder for lifting the working body.

Axis Figure 2 disc