An intelligent shell pressing method

Abstract

An intelligent shell pressing method, which is characterized in that the speed-regulating and pressure-regulating valve parts are set in the combined valve block first, so that the air source first enters the combined valve block, and then enters the cylinder through the speed-regulating and pressure-regulating valve parts according to the predetermined pneumatic circuit In the upper chamber or the lower chamber, push the piston rod of the cylinder to move up or down to complete the shell pressing work. During the normal shell pressing, the gas passes through the speed and pressure regulating valve and enters the upper chamber of the cylinder, and pushes the piston rod to move downward to perform shell pressing. After the piston rod runs downwards, it automatically stops and reverses direction. The gas enters the lower chamber of the cylinder, pushing the piston rod to move upwards and return to the initial position, completing a shell pressing cycle; when the shell encounters resistance, the piston rod stops moving downward. , the gas no longer passes through the speed-regulating and pressure-regulating valve, but directly enters the upper cavity of the cylinder through a straight channel, so that the piston rod moves downward quickly and impacts the shell surface. The invention changes the original impact shelling into slow shell pressing first, and then impact shelling after the shell pressing encounters resistance, which can greatly reduce air consumption and save energy consumption.

Description

technical field [0001] The invention relates to a shell-breaking technology for an aluminum electrolytic cell, in particular to a method of changing the existing shell surface breaking method, that is, from the traditional impact shelling to slowly pressing the shell first, and then automatically when the shell surface is too hard. The intelligent shell pressing method converted into impact shelling belongs to the technical field of electrolytic aluminum production and is suitable for use in electrolytic aluminum plants. Background technique [0002] The electrolytic aluminum factory uses electrolytic cells to produce primary aluminum. During the production process, the upper surface of the electrolytic cell forms a hard layer of shell. In the case of continuous consumption of production raw materials, new production raw materials must be continuously added to make the production continue. For this reason, it is necessary to use a pneumatic shelling device to open the shell ...

AI Technical Summary

Problems solved by technology

For this reason, it is necessary to use a pneumatic shelling device to open the shell surface, so that new production raw materials can be supplemented into the tank for chemical reaction. The existing electrolytic aluminum plants use ordinary impact cylinder shelling machines to open the shell surface during the production process. Problems such as large air volume consumption, serious energy consumption, high noise, severe damage to the cylinder, and low service life have seriously affected the normal production of aluminum electrolytic cells, and urgently need to be updated and improved.

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