Stepping-bottom-type heating furnace

Abstract

The invention relates to a stepping-bottom-type heating furnace, in particular to the improvement of a fixed bottom and a movable bottom of the stepping-bottom-type heating furnace. The furnace bottom has high bearing capacity, easy maintenance of refractory and reliable water-cooling structure. The stepping-bottom-type heating furnace comprises a furnace body, a combustion system, the fixed bottom, the movable bottom, a translation frame, a lifting frame and a loading steel discharger, wherein the fixed bottom and the movable bottom are provided with precast blocks used for bearing and locating a heated workpiece. A bearing frame of the fixed bottom and the movable bottom respectively adopts a rectangular square tube as main component, and the rectangular square tube has higher cross section bending-resistant modulus, is seamless steel tube without a weld joint so as to be difficultly deformed, and has no leakage weak link when being filled with water; as the fixed bottom and the movable bottom are provided with the precast blocks, unshaped refractory is prefabricated into a special solid shape, the working efficiency is improved in the manufacturing, installing and using process, the construction period of the furnace is shortened, the service life of the furnace is prolonged, the single precast block can be rapidly replaced without roasting oven when being damaged, and the production efficiency of the furnace is improved.

Description

technical field [0001] The invention relates to a walking bottom heating furnace device, in particular to the improvement of the fixed bottom and the movable bottom of a walking bottom heating furnace. Background technique [0002] The fixed bottom and the movable bottom are the most critical parts of the walking bottom heating furnace. Their length is tens of meters. The working environment temperature is high and the load is heavy. In order to realize the stepping action of the workpiece, it also bears a certain impact load. At present, the fixed bottom and movable bottom of the domestic walking bottom heating furnace are generally cast in the furnace when the furnace is built, and the load-bearing frame is a water-cooled structure welded by channel steel or H-shaped steel and steel plates. The furnace temperature is high or the loading load is large or after a period of use, there are disadvantages such as easy damage and maintenance of the furnace bottom refractory mater...

AI Technical Summary

Problems solved by technology

At present, the fixed bottom and movable bottom of the domestic walking bottom heating furnace are generally cast in the furnace when the furnace is built, and the load-bearing frame is a water-cooled structure welded by channel steel or H-shaped steel and steel plates. The furnace temperature is high or the loading load is large or after a period of use, there are disadvantages such as easy damage and maintenance of the furnace bottom refractory material, long oven cycle, frequent water leakage at the furnace bottom, and easy deformation of the load-bearing frame.

Images