Airtight-ring-type heating furnace insulating from air

Abstract

The invention discloses an airtight-ring-type heating furnace insulating from air. The airtight-ring-type heating furnace comprises an annular furnace body comprising an outer ring furnace wall, an inner ring furnace wall, a furnace top and a rotary furnace base; the furnace base is provided with a seal device; the furnace top is provided with an airtight feed device, and thus the annular furnace body internally forms an airtight furnace cavity; a radiation heating device extending into the airtight furnace cavity and an airtight discharge device extending out of the airtight furnace cavity are respectively fixed on the outer ring furnace wall; the furnace top is provided with a gas collecting opening; a furnace plate framework is supported above the furnace base; the bottom of the furnace base is provided with a rotary pin shaft and an annular guide groove; the furnace base is supported by a supporting roller and is installed on a concrete foundation; a power device which is positioned close to one side of the outer ring furnace wall is connected with a rotary shaft at the furnace base; and a centering wheel which is positioned close to one side of the inner ring furnace wall is connected with the annular guide groove at the furnace base. According to the heating furnace, the laying area of materials in the furnace is enlarged, the yield is improved, during the process that the materials are heated, components of gases in the furnace are completely not interfered by external air, and the continuous production of feed-heating-discharge can be realized.

Description

technical field [0001] The invention relates to a heating furnace, in particular to an airtight annular heating furnace isolated from air. Background technique [0002] In chemical industry, metallurgy, machinery, building materials and other industries, it is often necessary to heat various bulk raw materials to achieve the purpose of roasting volatilization, segregation or drying of raw materials. The equipment that realizes the above process is called heating kiln, which is a kind of equipment that uses the heat generated by fuel combustion or electric energy conversion to heat materials. Existing industrial heating furnaces can be divided into two types: intermittent heating furnaces and continuous heating furnaces. Among them, the typical intermittent heating furnaces are chamber heating furnaces and trolley heating furnaces. It is characterized by discontinuous production of the kiln. The advantages are simple operation, good heating uniformity, and easy control. Howe...

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Problems solved by technology

The existing patent technology also involves the sealing of the water seal device and the heating of the radiant tube in the furnace space to realize the isolation of the gas in the rotary hearth furnace from the outside world, but this patent does not involve the sealing of the furnace body feeding and discharging device and the furnace interior Considering the stability of gas pressure, it cannot achieve the effect of truly isolating the air

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