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] The tunnel kiln is a modern thermal equipment for continuous firing, which is widely used in the firing production of ceramic products. The tunnel kiln has the advantages of high production efficiency, energy saving and labor saving. At present, the common tunnel kilns are divided into straight-through and ring types. There are usually several sections of different temperature zones from the inlet to the outlet, which are used for preheating / Drying, oxidation and burning, and further equipped with a cooling section, no matter the straight-through or ring-type tunnel kiln is generally composed of two side walls and flat roof / vault together, the longitudinal section is inverted U shape, heating method is common The electric heating wire is set on the two side walls of the kiln to generate temperature through the conversion of electric energy into heat energ...

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.

Images