Tunnel dryer

Abstract

The invention discloses a tunnel dryer. The tunnel dryer comprises box walls, a box body, two conveying rollers, a conveying belt, heating rods, a charging opening, a discharging opening, an air inlet, an air outlet, an upper partition plate and a lower partition plate, wherein the box body is of a closed space enclosed by the box walls, the conveying belt is buckled on the two conveying rollers, the conveying rollers and the conveying belt are located in the box body, and the heating rods are located in a sandwich layer between the upper and lower parts of the conveying belt; the box body is partitioned into a drying tank and a cooling tank by the upper and lower partition plates, the heating rods are located in the drying tank, the charging opening and the air inlet are located in the drying tank, the discharging opening and a cooling air inlet are located in the cooling tank, and gaps exist between the upper partition plate and the upper part of the conveying belt and between the lower partition plate and the lower part of the conveying belt; the air inlet and the cooling air inlet comprise filtration devices. According to the tunnel dryer, a heating system is enclosed in the closed space formed by the conveying belt and the box walls, and additionally, air circulation exists, so that heat energy is maintained to the maximum, energy consumption is reduced, and the drying effect is good; drying is carried out in a closed environment, so that secondary pollution is avoided.

Description

technical field [0001] The invention relates to a tunnel dryer, in particular to a continuous tunnel powder dryer. Background technique [0002] High-purity fused silica powder material has the characteristics of high purity, high temperature resistance and corrosion resistance, and is widely used in the preparation process of high-precision quartz ceramic products. At present, most of the high-purity quartz powder materials are purified by pickling or aqueous solution treatment. In this case, it is necessary to dry the pickled quartz sand. However, the current domestic drying mode adopts closed oven drying or high Energy-consuming tunnel drying has the following defects: the comprehensive utilization rate of heat energy is not high; the drying effect is poor; the drying time is long; the product is polluted twice during the drying process, which brings inconvenience to the production process. Contents of the invention [0003] Purpose of the present invention: In ...

AI Technical Summary

Problems solved by technology

At present, most of the high-purity quartz powder materials are purified by pickling or aqueous solution treatment. In this case, it is necessary to dry the pickled quartz sand. However, the current domestic drying mode adopts closed oven drying or high Energy-consuming tunnel drying has the following defects: the comprehensive utilization rate of heat energy is not high; the drying effect is poor; the drying time is long; the product is polluted twice during the drying process, which brings inconvenience to the production process

Images