Box-type fuel gas thermal treatment furnace

Abstract

The invention relates to a box-type fuel gas thermal treatment furnace. The box-type fuel gas thermal treatment furnace comprises a furnace shell and a furnace hearth. The furnace shell is a rectangular box body. The furnace shell is provided with a material inlet and a material outlet. The furnace hearth is internally provided with a storage rack. The furnace shell is provided with a high-temperature flue gas inlet. The furnace shell is internally provided with an annular flue gas channel. The left side and the right side of the flue gas channel are communicated with the furnace hearth. A vertical flue communicated with the flue gas channel is arranged on the outer portion of the furnace shell. The storage rack is arranged below the high-temperature flue gas inlet and communicated with the flue gas channel. The two ends of the storage rack are in airtight connection with the inner wall of the furnace shell. According to the box-type fuel gas thermal treatment furnace, a plurality of flue gas exhaust pipelines arranged on a traditional thermal treatment furnace are omitted, the flue gas channel is directly and additionally arranged in the furnace shell, and the vertical flue communicated with the flue gas channel is arranged on the outer portion of the furnace shell, so that flue gas subjected to heat exchange in the furnace hearth enters the flue gas channel and centralized and output through the vertical flue; pipeline configuration is simplified, the production cost is lowered, circulation pressure of the flue gas in the furnace is uniform, the thermal utilization rate is high, and heat loss is less.

Description

Technical field: [0001] The invention relates to a heat treatment furnace, in particular to a box-type gas heat treatment furnace. Background technique: [0002] Recently, the heat treatment of workpieces is generally heated by resistance furnaces. However, due to the long heating time and high energy consumption, especially for high-temperature heat treatment of large workpieces and special materials, the thermal efficiency and high-temperature stability of resistance furnaces cannot meet the needs of actual production. . [0003] like figure 1 As shown, the traditional box-type heat treatment furnace has a plurality of small holes 2' for the circulation of exhaust pipes in the furnace body 1', and a plurality of exhaust pipes 3' communicating with the small holes are respectively arranged in the walls on both sides of the furnace mouth. , the flue gas in the furnace is led out through a plurality of exhaust pipes through a pipe, thereby effectively ensuring the stability...

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Problems solved by technology

[0005] In the actual use process, according to the applicant, although the design of the flue arrangement at the furnace bottom of the heat treatment furnace can improve the heating efficiency and the uniformity of the furnace temperature, the flue arrangement design is intricate, difficult to maintain, and the production cost is high

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