Steel wire heat treatment open-fire heating furnace with column combined type preheater

Abstract

The invention relates to a steel wire heat treatment open-fire heating furnace with a column combined type preheater. The preheater is arranged in a smoke discharging flue and comprises a hot air tank and a cold air tank, which are communicated through a connecting vent pipe, and the hot air tank and the cold air tank are respectively partitioned into multiple chambers by partition boards. Each chamber of the hot air tank is respectively communicated with each chamber of the corresponding cold air tank through the connecting vent pipe, each chamber of the hot air tank is respectively providedwith a hot air pipe, and each hot air pipe is communicated to each section of the open-fire heating furnace. Each chamber of the cold air tank is respectively provided with a cold air pipe, each coldair pipe is communicated with a cold air header pipe, and a cold air valve is arranged on each cold air pipe. In the invention, the air quantity of each working section of the open-fire heating furnace is controlled by adjusting the air quantity entering each cold air pipe of the preheater, and the cold air valve works at normal temperature, is easy to realize automatic control and has high automatic control accuracy. The utilization rate of heat energy is high, the thermal stability of the furnace is good, and produced steel wires have good quality.

Description

technical field [0001] The invention relates to steel wire heat treatment equipment, in particular to an open flame heating furnace for steel wire heat treatment with a split and combined preheater. Background technique [0002] Steel wire open flame heating furnace is a kind of equipment for heat treatment of steel wire. There are preheating section, heating section and soaking section in the furnace. The temperature and air-fuel ratio of each section are different. The running direction of steel wire and the running direction of flue gas in the opposite direction. In order to recover and utilize the waste heat of the flue gas discharged from the open flame heating furnace, a preheater is arranged in the exhaust duct. The preheater uses the residual heat of the flue gas to preheat the combustion air leading to each section of the open flame heating furnace. [0003] The traditional preheater is equipped with a cold air pipe and a hot air main pipe, and the hot air main pi...

AI Technical Summary

Problems solved by technology

The hot air valve with a large gap has poor precision and is prone to air leakage, especially when the open flame heating furnace is in a small-volume production state, the air volume in the soaking section exceeds the standard, resulting in serious scale on the steel wire and affecting the quality of the steel wire

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