Discussion on improvement scheme of steel wire heat treatment muffle furnace

In 1991, a certain company designed and manufactured a PLC microcomputer mechanical coal-fired steel wire heat treatment muffle furnace for Heshan Hengji Steel Wire Products Co., Ltd., which was used in the production line of steel wire heat treatment, pickling, phosphating, and I-wheel rewinding. The equipment is combined into 27 combustion modes according to the coal feeding speed and combustion-supporting air volume, and the PLC selects a suitable combustion mode from the 27 combustion modes according to the temperature conditions of the furnace head and tail and the burnout of coal slag to achieve The purpose of automatically controlling the furnace temperature is to make the coal burn completely, but after use, many defects have been exposed. On the basis of digestion and absorption, the author designed and manufactured 2 PLC microcomputer mechanical coal-fired steel wire heat treatment muffle furnaces. For the defects of the original furnace, such as the easy collapse of the combustion chamber arch, the high mechanical failure rate of the chain row and slag discharge, Unreasonable air volume distribution, easy blockage of flue and muffle holes, etc., corresponding improvement measures should be taken, and heat exchangers should be added to recover part of the waste heat and reduce the demand for coal.