Capacity-variable trolley resistance furnace

Abstract

The invention discloses a capacity-variable trolley resistance furnace which comprises a furnace body, wherein the furnace body is internally provided with a hearth for holding a trolley. The capacity-variable trolley resistance furnace is improved in the mode that a rear furnace door is arranged at one end of the trolley; a front furnace door and a front furnace door lifting mechanism are arranged at one end far away from the rear furnace door on the furnace body; a gap is formed between the rear furnace door and the inner wall of the hearth; a plurality of push rods are arranged on the rear furnace door; a sealing block is mounted at the top of each push rod; after the push rods are started, the gap can be sealed through the sealing blocks. According to the capacity-variable trolley resistance furnace disclosed by the invention, the cross section of the hearth takes the shape of a door hole or a semicircle, not only is the size relatively small, but also the space utilization rate is high, and the temperature uniformity of the inner wall of the hearth is good.

Description

technical field [0001] The invention relates to the field of industrial furnaces, in particular to a variable-capacity trolley-type resistance furnace in the field. Background technique [0002] In the prior art, the hearth of industrial furnaces is mostly square. Although this kind of hearth has a large volume, its utilization rate is low. When heating, not only the heat is wasted, but also the temperature uniformity of the inner wall of the hearth is poor. If it is changed to other shapes, there will be a problem of difficult sealing. At the same time, the positions of the front and rear furnace doors are fixed, regardless of the size of the workpiece to be processed, the volume of the furnace remains unchanged, which also leads to waste of heat. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a variable capacity trolley-type resistance furnace. [0004] In order to solve the above technical problems, the pre...

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Problems solved by technology

[0002] In the prior art, the hearth of industrial furnaces is mostly square. Although this kind of hearth has a large volume, its utilization rate is low. When heating, not only the heat is wasted, but also the temperature uniformity of the inner wall of the hearth is poor. If it is changed to other shapes, there will be a problem of difficult sealing

At the same time, the positions of the front and rear furnace doors are fixed, regardless of the size of the workpiece to be processed, the volume of the furnace remains unchanged, which also leads to waste of heat

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