Shell-press cylinder for aluminum electrolysis cell

Abstract

The invention relates to a shell-press device, in particular to the shell-press device for an aluminum electrolysis cell. The shell-press cylinder for the aluminum electrolysis cell comprises a cylinder body, wherein, two ends of the cylinder body are respectively equipped with a front end cover and a rear end cover; the cylinder body is internally equipped with a piston and a piston rod; the front end cover and the rear end cover are equipped with position detection pneumatic control valves; the upper end of the rear end cover is equipped with an intelligent control valve bank; and the position detection pneumatic control valves are pneumatically connected with the intelligent control valve bank. The intelligent shell-press cylinder in the invention has low-pressure (0.18MPa) startup performance and can automatically adjust the operating pressure of the cylinder according to the size of the resistance in the case of resistance, thus achieving the optimum matching of output force and saving energy.

Description

technical field [0001] The invention relates to a shell pressing device, in particular to a shell pressing device for an aluminum electrolytic cell. Background technique [0002] In the production of electrolytic aluminum, it is necessary to add dense and small amounts of alumina to the electrolytic cell, but because there is a layer of hard electrolyte crust on the surface of the molten electrolyte in the electrolytic cell, it must be broken by the shell pressing device of the electrolytic cell before feeding. Form a feed opening. The shell pressing cylinder installed on the upper structure of the aluminum electrolytic cell is an important equipment for aluminum electrolysis production. It drives the shell pressing hammer to intermittently hit the electrolyte shell surface in the electrolytic cell in the guide cylinder, and forms a discharge port. [0003] At present, the cylinders used in domestic aluminum electrolysis plants are shell cylinders, which generally have the...

AI Technical Summary

Problems solved by technology

[0003] At present, the cylinders used in domestic aluminum electrolysis plants are shell cylinders, which generally have the problems of weak hitting, large impact, loud noise, serious air leakage, large amount of compressed air usage, high failure rate, and short life. system, the piston rod cannot return quickly after being stretched out, so that the shelling hammer head is soaked in the electrolyte for too long, resulting in serious corrosion and wear of the shelling hammer head, short life, and increased production costs

At present, there is no detection device for the shelling cylinder, and it is impossible to detect the failure to break through in time, resulting in an increase in sudden effects, and the accumulation of materials in the tank affects the thermal balance of the electrolytic tank, which increases the unit consumption of alumina

The above reasons increase the maintenance and operation costs of aluminum electrolysis enterprises, and also increase the labor intensity of maintenance personnel, which affects the control of various technical conditions of aluminum electrolysis, resulting in a decrease in current efficiency and an increase in energy consumption

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