Air and nitrogen conversion device for box-type atmosphere-controllable multi-purpose furnace during outage

Abstract

The invention is applicable to conversion of air and nitrogen of a box-type atmosphere-controllable multi-purpose furnace during outage. A current device is characterized in that a furnace door, an oil cylinder and a lifting table are all controlled to lift by an air compressor and a solenoid valve; when outage happens suddenly, various actions are interrupted, and fire is prone to breaking out. For solving the problems, an air and nitrogen conversion device for the box-type atmosphere-controllable multi-purpose furnace during outage is designed and is characterized by comprising a main nitrogen pipe, a nitrogen valve 1, an air pipe, an air valve, a nitrogen valve 2 and a branch nitrogen pipe, wherein the nitrogen valve 1 is arranged on the branch nitrogen pipe; one end of the branch nitrogen pipe is connected with the main nitrogen pipe, and the other end is connected with the air pipe; and besides, the air valve and the nitrogen valve 2 are arranged on the air pipe. During outage, the air valve is firstly closed, and the nitrogen valve 1 is opened, so that nitrogen with certain pressure enters the air pipe through the branch nitrogen pipe, and normal operation of various actionsis ensured through the nitrogen. The device is simple in structure, and production requirements are met.

Description

technical field [0001] The patent of the present invention is suitable for the conversion of air and nitrogen when the box-type controllable atmosphere multi-purpose furnace is powered off, and the device can prevent the occurrence of fire. Background technique [0002] At present, all furnace doors, oil cylinders and lifting platforms of the box-type controlled atmosphere multi-purpose furnace are supplied with air at a certain pressure through the pipeline by the air compressor, and the lifting is controlled by the solenoid valve. When the power is suddenly cut off, the air compressor and the solenoid valve will both Stop working. If the furnace door, oil cylinder, and lifting platform are in the process of lifting, the operation will be interrupted. Since the quenching oil is under the lifting platform, if the workpiece to be quenched at a temperature above 810°C cannot be immersed in the quenching oil in time, then and prone to fire. Contents of the invention [0003]...

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Problems solved by technology

[0003] The purpose of the patent of the present invention is to overcome the deficiencies of the above-mentioned technologies, and design a box-type controllable atmosphere multi-purpose furnace air and nitrogen conversion device when the power is off, which can effectively solve the problem that the furnace door, oil cylinder, and lifting platform are in the process of lifting The problem of sudden power failure during middle time and unable to lift

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