Explosion protection system and control method for scrap metal crushing machine

Abstract

The invention provides an explosion protection system and a control method for a scrap metal crushing machine. The system comprises an oxygen concentration sensor, a gas pressure sensor, a nitrogen inerting system, a water mist explosion suppression system, a dust removal pipeline isolated system, an active explosion venting system, a manual control switch, an audible and visual alarm and a controller, wherein the input end of the controller is electrically connected with the output end of the sensor; and the output end of the controller is electrically connected with the nitrogen inerting system, the water mist explosion suppression system, the dust removal pipeline isolated system and the active explosion venting system. According to the explosion protection system for the scrap metal crushing machine provided by the invention, signals inside a crushing cavity are collected by the sensor and transmitted to the controller, and the signals are sent to a corresponding explosion protection device after processing judgment by the controller, so that the explosion protection function of the crushing machine is realized, the damage of explosion is reduced, and normal operation of the crushing machine and the safety of operation staff are guaranteed.

Description

technical field [0001] The invention relates to the field of scrap metal crushing and recycling equipment, in particular to an explosion-proof system and a control method for a scrap metal shredder. Background technique [0002] At present, scrap metal shredding is the most advanced scrap metal processing method in the world, and it has been gradually promoted and applied in our country. The crushing process is as follows: the metal scrap is conveyed to the rolling device through the feeding device, and then enters the crusher after being squeezed and deformed; the metal scrap is squeezed and deformed until it is crushed under the repeated impact of the hammer head of the crusher. Since the crushed waste often contains hazardous waste such as waste oil tanks, waste gas barrels, waste paint barrels, and waste hazardous chemical tanks, during the crushing process, when these hazardous wastes are crushed, the flammable and explosive gas in the crushing chamber gradually Accumu...

AI Technical Summary

Problems solved by technology

Since the crushed waste often contains hazardous waste such as waste oil tanks, waste gas barrels, waste paint barrels, and waste hazardous chemical tanks, during the crushing process, when these hazardous wastes are crushed, the flammable and explosive gas in the crushing chamber gradually Accumulation, when the external factors such as temperature and pressure in the crusher cavity reach certain conditions, the impact of the hammer head of the main shaft and the scrap metal will generate sparks, which may cause combustion and explosion, cause damage to the equipment, and even endanger the life, health and safety of the operators.

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