High-efficiency box-type furnace with uniform atmosphere filling

Abstract

The invention relates to a high-efficiency box-type furnace with uniform atmosphere filling. The high-efficiency box-type furnace comprises a main body, a preheating mechanism and a gas injection mechanism, wherein the gas injection mechanism comprises a supporting assembly, a sealing sleeve, a rotating sleeve, a fixing rod, a fan blade, a supporting net, two gas transmission pipes and at least two gas inlet pipes; the preheating mechanism comprises a compression cylinder, a first pipeline, a second pipeline, a first one-way valve, a second one-way valve, a pressure relief valve, a piston block, a cylinder and a supporting rod; and the supporting assembly comprises a supporting ring, two connecting blocks, two open grooves and at least two fixing blocks. In the high-efficiency box-type furnace with uniform atmosphere filling, gas can be preheated through the preheating mechanism, so that the influence of the gas on the internal temperature of the box-type furnace is reduced, and the heat treatment effect of the box-type furnace on a metal workpiece is improved; and the gas can be uniformly injected into the main body through the gas injection mechanism to make uniform contact withthe metal workpiece, and therefore the heat treatment effect of the box-type furnace on the metal workpiece is further improved.

Description

technical field [0001] The invention relates to the field of metal heat treatment equipment, in particular to a high-efficiency box furnace with uniform atmosphere filling. Background technique [0002] Box furnace, also known as muffle furnace, is easy to operate, easy to maintain, and equipped with a controllable chimney behind the furnace. It is suitable for chemical analysis of coal, coking products and chemical raw materials. It can be used in industries and departments such as electric power, coal, papermaking, petrochemical, cement, agriculture and animal husbandry, medical research, teaching, etc. A box-type furnace is a heating furnace with a box-shaped hearth. When the box furnace is heating the metal workpiece, the box furnace needs to be filled with an atmosphere to protect the material or provide a reactive atmosphere for the heat treatment of the material. [0003] The gas in the box-type furnace of the prior art is generally directly passed into the high-te...

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Problems solved by technology

[0003] The gas in the box-type furnace of the prior art is generally directly passed into the high-temperature box-type furnace from the steel cylinder. Because the temperature difference between the gas in the steel cylinder and the temperature in the box-type furnace is large, the gas will absorb heat after entering the box-type furnace. , leading to a decrease in the working temperature in the box-type furnace, which is not conducive to the heating or heat treatment reaction of the metal workpiece in the box-type furnace. Not only that, the air intake of the box-type furnace in the prior art usually adopts the way of one-way air intake, which is not conducive to the heating of the metal workpiece in the box-type furnace. The uniform distribution of gas in the furnace will also affect the heating or heat treatment reaction of metal workpieces.

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