Detecting device for end-reaching of built-in piston of crust breaking cylinder of electrolytic cell

Abstract

The invention relates to a detecting device for end-reaching of a built-in piston of a crust breaking cylinder of an electrolytic cell. The detecting device comprises the crust breaking cylinder, the electrolytic cell, a built-in detecting sensor and a pull-up resistor, wherein the electrolytic cell comprises a direct-current power supply; a mounting hole is formed in a steel flange at the bottom of the crust breaking cylinder, and the built-in detecting sensor is mounted in the mounting hole; the lower end of the built-in detecting sensor is connected with a high-temperature-resistant pulse conducting wire, the other end of the high-temperature-resistant pulse conducting wire is connected with the pull-up resistor, and the other end of the pull-up resistor is connected with the direct-current power supply; the crust breaking cylinder is connected with a high-temperature-resistant ground wire, and the other end of the high-temperature-resistant ground wire is connected with the grounding terminal of the direct-current power supply. According to the utility model, the built-in detecting sensor is utilized to control a hammer to lift up immediately after a crust breaking hammer head connected with the piston rod of the crust breaking cylinder is broken to the end, so that the crust breaking hammer head is not allowed to stay in electrolyte and seriously adhere the electrolyte; the crust breaking hammer head can break into the electrolyte, so that a discharging opening is unblocked and does not block materials; the frequency of anode effect of the electrolytic cell is effectively reduced, the energy is saved, the consumption is reduced, and the labor strength of electrolytic workers is relieved.

Description

technical field [0001] The invention relates to a detection device for detecting whether the shelling cylinder of a prebaked electrolytic cell is bottomed out, in particular to a detection device for detecting whether a built-in piston of the shelling cylinder of an electrolytic cell is bottomed out. Background technique [0002] The main purpose of the shelling system of the electrolytic cell is to effectively open the shelling opening on the surface of the electrolyte in the electrolytic cell every time the material is cut, so that the alumina powder can enter the electrolyte for electrolytic production; As long as the shell hammer head hits the bottom and smashes the shell at the feeding port every time, it can ensure smooth feeding, and the shell hammer head does not need to stay in the electrolyte at all. [0003] The original shelling cylinder is controlled by the electrolytic cell tank control machine for a fixed time of 3 seconds, but the shelling cylinder is caused ...

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Problems solved by technology

[0003] The original shelling cylinder is controlled by the electrolytic cell tank control machine for a fixed time of 3 seconds, but the shelling cylinder is caused by problems such as unstable air pressure, large differences in cylinder lubrication, and sealing. The speed and time of the hammer hitting the bottom are quite different, so the fast shelling

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