A rotary tunnel kiln

Abstract

The invention relates to a kiln and provides a rotary tunnel kiln. The rotary tunnel kiln is full of heat and has the characteristic of small temperature difference, so that the quality of the ceramic product firing process is improved, and the functions of saving energy, reducing emission, promoting environmental protection and lowering the manufacturing cost are achieved. The rotary tunnel kiln comprises a ring-shaped kiln body consisting of both an inner wall and an outer wall and a track arranged at the inner bottom of the kiln body, wherein electric heating wires are respectively arranged on two side walls of all chambers except for a cooling chamber in the kiln body; a blower device feeds air into an air outlet box, and air is blown to a firing chamber through an air outlet, so that on one hand, finished ceramic conveyed from the firing chamber is cooled down to bring convenience for being taken out later, on the other hand, heat taken away from the high-temperature firing chamber is returned into the firing chamber or even a drying chamber at a relatively low temperature, and accordingly, energy consumption caused by heating of heating components is reduced.

Description

technical field [0001] The invention relates to a kiln, in particular to a rotary tunnel kiln. Background technique [0002] Tunnel kiln is a modern thermal equipment for continuous firing, which is widely used in the firing production of ceramic products. Tunnel kiln has the advantages of high production efficiency, energy saving and labor saving. At present, the common tunnel kiln is divided into straight-through type and ring type. There are usually several zones with different temperatures from the inlet to the outlet, which are used for preheating / Drying, oxidation and firing, further equipped with a cooling section, regardless of the straight-through type or the ring type tunnel kiln, generally consists of two side walls and a flat roof / vault. The longitudinal section is in the shape of an inverted U, and the heating method is common The most important thing is to install electric heating wires on the two side walls of the kiln to generate temperature through the con...

AI Technical Summary

Problems solved by technology

[0003] The problem that usually exists in the use of existing tunnel kilns is that the heat distribution is uneven, which is usually manifested by the fact that the heat flows upward under the action of the air flow or the nature of the heat itself easily flows upwards, resulting in a temperature difference between the upper and lower parts of the kiln or the two side walls. , which affects the strict temperature requirements of the firing or decal steps of ceramic products in the production process, and is prone to produce defective products. The loss of heat between the two causes waste of fuel, consumes resources and increases costs, and the energy-saving effect is not good.

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