Automatic feeding and gunning machine for furnace refractory maintenance

Abstract

The invention provides an automatic feeding and gunning machine for furnace refractory maintenance. The automatic feeding and gunning machine comprises a feeding machine, a material receiving hopper, a pressure tank, a material distribution disc, an ejector and a main machine frame. The feeding port of the material receiving hopper is located under the discharge port of the feeding machine. The discharge port of the material receiving hopper is connected with the upper opening of the pressure tank. The material distribution disc is located between the lower opening of the pressure tank and the ejector. The material distribution disc is a grid disc which is arranged in a shell with openings in the upper portion and the lower portion. The upper opening of the shell is connected with the lower opening of the pressure tank. A rotating shaft is arranged in the grid disc in a penetrating manner. The upper end of the rotating shaft is connected with a stirrer. The lower end of the rotating shaft is connected with a transmission device. A discharge pipe is arranged at the lower end of the grid disc and connected with the inlet of the injector. The automatic feeding and gunning machine for furnace refractory maintenance is uniform in discharge, low in maintenance cost, high in work efficiency and gunning quality and capable of automatically feeding refractories to a high place from a low place, and secondary raised dust is reduced; and the number of operators is decreased, the work strength of the operators is reduced, and potential safety hazards are reduced.

Description

technical field [0001] The invention relates to a refractory lining gunning machine for furnaces and kilns in the metallurgical industry, in particular to an automatic feeding gunning machine for maintaining refractory materials in furnaces and kilns. Background technique [0002] The lining refractories of industrial furnaces such as electric furnaces, converters, RH vacuum tanks and tundishes are usually repaired by gunning machines after melting. At present, the main types of gunning machines for furnace refractory maintenance are: flame gunning machines, wet gunning machines, and semi-dry gunning machines. [0003] The flame gunning machine burns the refractory powder into a molten state, and then adheres the molten refractory material to the eroded part of the industrial furnace to prolong the service life of the industrial furnace. Although the flame gunning machine can be repaired as long as the eroded parts of the industrial furnace are exposed without shutting down...

AI Technical Summary

Problems solved by technology

However, the flame gunning machine needs to burn the refractory powder into a molten state, and the temperature of the refractory material is relatively high during spraying, and the safety hazard is relatively high. The flame gunning machine has been gradually eliminated

Although the safety factor of wet gunning machine and semi-dry gunning machine is higher than that of flame gunning machine, but wet gunning machine and semi-dry gunning machine use frictional material distribution plate, and there is a common problem of uneven discharge. Uniform; and because the friction-type distribution plate is easy to wear due to the large friction force when it is working, so the frequency of maintenance and replacement is high

Usually, after the gunning machine uses 20-30 tons of gunning material, it needs to be shut down to adjust or replace the friction distribution plate, resulting in the gunning machine not being able to work continuously

In addition, the wet gunning machine and semi-dry gunning machine cannot automatically feed materials, and there is a problem of secondary dust when feeding

Since it mainly relies on manual feeding, more operators are required, the work intensity of the operators is relatively high, and there are certain safety hazards

Images