A special cylinder

Abstract

The invention discloses a special cylinder which comprises an air way switching block, an air cylinder, an air control reversing valve a, a mechanical control reversing valve b, an electric control reversing valve and a mechanical control reversing valve a. The air cylinder comprises a front cover, a rear cover, an extensible rod and a cylinder body, the front cover and the rear cover are arranged at the front end and the rear end of the cylinder body respectively, the extensible rod is arranged inside the cylinder body, a piston is mounted at the tail end of the extensible rod, the air way switching block is arranged on the rear cover, two air outgoing holes of the air control reversing valve a are connected with two air incoming holes of the air cylinder respectively, the mechanical control reversing valve b is arranged in the front cover, the mechanical control reversing valve a is arranged in the rear cover, and driving rods of the mechanical reversing valve b and the mechanical reversing valve a correspond to the piston. Through the structure, service life of a crust breaking system can be prolonged, crust breaking success rate can be increased, compressed gas can be saved, and the problem of discharging unsmoothness is solved. Aiming at strong magnetic working environment, the mechanical control reversing valves and a pneumoelectric conversion device are arranged, running conditions of the air cylinder can be known through air signals, and higher accuracy and higher reliability are realized when compared with using of a magnetic sensor.

Description

technical field [0001] The invention relates to the technical field of pneumatic actuators, in particular to a special cylinder. Background technique [0002] With the rapid development of my country's electrolytic aluminum industry, more and more hydraulic and pneumatic components are applied to electrolytic aluminum production equipment. The environment of aluminum factories has the characteristics of high temperature, dust and strong magnetic field. In the process of electrolytic aluminum, it is necessary to intermittently feed materials into the electrolytic cell, but due to the cooling of the surface, crusting is prone to occur. The existing technology uses a traditional cylinder to shell. The system consists of a cylinder, an electric control cabinet and a corresponding gas circuit. The multiple parts of the cylinder are made of cast iron or steel, and the working process is full-stroke blind printing without signal feedback function. The control system is multi-point ...

AI Technical Summary

Problems solved by technology

Due to the high temperature and strong magnetism in the working environment of the electrolytic cell, the iron cylinder body of the traditional shelling cylinder is not anti-magnetic, resulting in low working efficiency of the cylinder, low utilization rate of compressed air source, and multi-point linkage control is easy to cause uneven shelling , The defect of poor cutting, but also increased the consumption of gas and electricity

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