Intelligent crust breaking system and control method thereof

Abstract

The invention discloses an intelligent crust breaking system. The intelligent crust breaking system comprises a control cabinet, a combination valve, a signaling adjusting device, a crust breaking aircylinder and a crust breaking chisel. The combination valve comprises a reversing valve, a pressure valve, a pressure adjusting knob and a valve body. The reversing valve and the pressure valve extend out of the top of the valve body. The pressure adjusting knob extends out of one side of the valve body. The signaling adjusting device is installed on one side of the valve body. The valve body isinstalled on a rear end cover of the crust breaking air cylinder. The crust breaking chisel and a piston rod of the crust breaking air cylinder are hinged through a fork rod joint. The combination valve is in wire connection with the control cabinet. According to the intelligent crust breaking system, through several years of research, analysis and trial-production, an on-site experiment in an electrolytic aluminum workshop achieves success, the fact that the crust breaking chisel is non-stick basically is achieved now, the energy-saving effect is obvious, the service life of the crust breaking chisel is significantly improved, the labor intensity and workload of workers are greatly reduced, the anode effect is significantly reduced, the product output and quality are improved, and the enterprise cost is reduced.

Description

technical field [0001] The invention relates to the technical field of special equipment for producing electrolytic aluminum on a pre-cultivated electrolytic cell in an electrolytic aluminum workshop of an aluminum factory, in particular to an intelligent shelling system and a control method thereof. Background technique [0002] The shell breaking system on the electrolytic cell of the electrolytic aluminum workshop of the aluminum plant is a system used to open a hole on the hard shell surface of the electrolyte in the electrolytic cell, so as to add alumina and fluoride salt raw materials into the electrolytic cell for electrolysis. In the production process of electrolytic aluminum, because the shelling hammer head frequently (once per minute) contacts the electrolyte at high temperature (960-1000°C), and the conventional system adopts a multi-group control method, the hammer head enters the electrolytic aluminum The depth of the liquid is deep and the time is long, whic...

AI Technical Summary

Problems solved by technology

In addition, the conventional shelling system adopts the method of multi-group simultaneous control (same time and same pressure), so regardless of the hardness of the shell surface, only one pressure (0.6MPa) can be set.

In fact, more than 99% of the shell surfaces can be opened when the working pressure is set at 0.2MPa. However, the system pressure cannot be reduced, because there are still 1% of the hard shell surfaces that need high pressure to open, so the system pressure can only be opened. Set at 0.6MPa, obviously, this setting is unreasonable

In addition, the movement speeds of the multiple groups of systems under simultaneous control are not the same, so the control time can only be controlled according to the slowest system, which causes the hammer head that opens the shell first to soak in the electrolyte for a long time, thus making the hammer The head absorbs a lot of heat and sticks to the package, which is obviously unreasonable

In short, the current above-tank shelling system in the electrolytic aluminum industry has problems such as large gas consumption, high energy consumption, low service life of the hammer head, high labor intensity for cleaning the gourd head, low quality of electrolytic aluminum polluted by the melted hammer head, and anode effect coefficient. High, long downtime to deal with problems, high cost and many other problems

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