Tornadic hot air underfeed automatic stoking quenching furnace

Abstract

The invention discloses a tornadic hot air underfeed automatic stoking quenching furnace. The furnace includes a quenching furnace chamber and a coal-fired heater for jetting flames to the quenching furnace chamber; the lower part inside a coal-fired heater furnace body is a cylindrical ash chamber, the upper edge of which supports a bell mouth shaped furnace grate having a coal feeding port in the center, and a combustion chamber is positioned above the furnace grate; a C-shaped air feeding channel that supplies air directly to the combustion chamber and has a preheating function is arrangedaround the combustion chamber, a flame jet orifice communicated with the quenching furnace chamber is installed at a notch of the C-shaped air feeding channel on the upper part of the combustion chamber; a furnace bottom air inlet communicated with the outside of the heater furnace body is disposed on one side or at the bottom of the ash chamber; the bottom of the heater furnace body is provided with a longitudinal coal feeding pipe that extends to the central coal feeding port of the bell mouth shaped furnace grate, and automatic stoking is realized by coal feeding motor driven screw rods. The automatic stoking quenching furnace provided in the invention has the characteristics of simple structure, high coal-fired thermal efficiency, controllable quenching temperature and time, and conformance to environmental protection requirements.

Description

technical field [0001] The invention belongs to the technical field of metal heat treatment equipment, in particular to a tornado hot air feed down type automatic coal feeding quenching furnace. Background technique [0002] Heat treatment quenching furnace is a general equipment necessary for metallurgy, cast steel, forging, and machining industries to meet the requirements of workpiece use. Currently, there are three types: coal, electric furnace, and heavy oil. Among them, coal stoves are the most widely used, and the heat utilization rate of fuel has been low (about 38%) for decades, and the state of black smoke containing a large amount of sulfur dioxide and carbon monoxide that pollutes the environment has not been improved, and more than 95% are added from the top of the flame. Coal, so that the fuel that has not had time to fully burn is discharged in the form of black smoke with the oxygen-added blower, which not only wastes energy but also seriously pollutes the en...

AI Technical Summary

Problems solved by technology

Wherein the coal furnace is the most widely used, and the heat utilization rate of the fuel has been low (about 38%) for decades, and the state of black smoke containing a large amount of sulfur dioxide and carbon monoxide that pollutes the environment has not been improved, and more than 95% are added from the top of the flame. Coal, so that the fuel that has not had time to fully burn is discharged in the form of black smoke with oxygen blowing, which wastes energy and seriously pollutes the environment

Due to the requirements of the quenching process, the heating temperature and time of the casting need to be strictly controlled, and the existing coal-fired quenching furnace is not suitable for controlling the quenching temperature and time

Images