Combined integrated energy-saving adjustable electrical control pneumatic electrolytic aluminum crust breaking system

Abstract

The invention discloses a control method of a combined integrated energy-saving adjustable electrical control pneumatic electrolytic aluminum crust breaking system. A gas source gas inlet, a first electromagnetic reversing valve and a second electromagnetic reversing valve are integrated; the gas source gas inlet passes through passages of the two electromagnetic reversing valves and a throttle valve thereof and then is connected with two outlets on a control system; and the two outlets on the control system are connected with a rod cavity and a rodless cavity of the cylinder respectively. A control method comprises the following steps of: introducing gas through the gas inlet; electrifying a coil of the first electromagnetic reversing valve in an energy-saving mode; acting a valve core of the first electromagnetic reversing valve, feeding gas into the rodless cavity of the cylinder, discharging gas from the rod cavity and descending the piston rod; after breaking down an aluminum crust, cutting off power of the coil of the first electromagnetic reversing valve, feeding gas into the rod cavity, traveling back the cylinder and immediately returning the piston rod to realize rapid return; and if a hammer head cannot break down the aluminum crust, selecting the conventional mode, i.e., a non-energy-saving mode.

Description

technical field [0001] The invention relates to a method and system for controlling shelling of electrolytic aluminum, in particular to selecting the working mode of a shelling cylinder and adjusting the moving speed of a piston rod through the control system. Background technique [0002] At present, the domestic aluminum industry uses electrolytic aluminum liquid to produce aluminum. The shelling (cutting) material system is the key equipment for the production of electrolytic aluminum. It automatically controls the coordination and cooperation between shelling and cutting by computers and PLCs to complete the normal production of electrolytic aluminum. Since the electrolytic aluminum equipment was put into production, there have always been problems that the cylinder piston cannot return quickly due to the excessive inertia in the downward extension process of the shelling hammer head, the hammer head is soaked in the aluminum liquid for too long, and the gas energy and e...

AI Technical Summary

Problems solved by technology

Because the energy consumption of the gas discharged by the cylinder is too high for each action, it can be considered to reuse the gas discharged from the rod cavity of the cylinder; there is a large amount of alumina dust in the electrolytic cell workshop, and some of the dust will adhere to the piston rod of the shelling cylinder. During the long-term operation of the cylinder, the dust adsorbed on the piston rod will rub against the sealing ring of the cylinder body, resulting in serious leakage inside the cylinder body

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