Constant-temperature type air-blowing drying oven

Abstract

The invention discloses a constant-temperature type air-blowing drying oven which comprises a box body, wherein the box body is divided into a dehumidifying cavity and a drying cavity; an air runner is formed between the drying cavity and the inner wall of the box body; a control valve is arranged in the dehumidifying cavity; the control valve is connected with a temperature inductor, and is used for controlling an air release valve, an air inlet valve and a circulating valve in the dehumidifying cavity; a rotary shaft is arranged on the top of the drying cavity; a drive device is arranged on the rotary shaft; air distributing plates are arranged at the periphery of the drying cavity; and an induced draft fan is arranged on a dehumidifying tube, and the port of the induced draft fan is further connected with a wet gas purifying device which is a multi-layer net structure. The rotary shaft and the air distributing plates are additionally arranged on an existing drying oven gas circulating system to form a ventilating circulating system, so that temperature uniformity and good drying quality in a drying cavity are guaranteed; the gas in the cavity is clean, so that cross contamination is avoided; and the constant-temperature type air-blowing drying oven is high in drying rate, is good in drying quality, is high in heat utilization rate, is good in practicability and is worthy of being widely popularized.

Description

technical field [0001] The invention relates to the field of drying equipment, in particular to a constant temperature blast drying box. Background technique [0002] Blast drying oven, also known as "oven", is widely used in the drying of experimental instruments and experimental samples. The blast drying box uses a fan to blow air to speed up the air circulation in the drying box, which can make the temperature distribution in the box more uniform. At the same time, the blowing also speeds up the moisture on the surface of the object to be dried to enter the air faster. Although the blast drying box is simple and practical, it also faces the following problems: the inside of the blast drying box is a sealed structure, and the humidity in the box is not high at the initial stage of putting the items to be dried, so the drying effect is good. However, once the water content of the item is too large, the drying efficiency will be greatly reduced if the humidity in the box is...

AI Technical Summary

Problems solved by technology

Although the blast drying box is simple and practical, it also faces the following problems: the interior of the blast drying box is a sealed structure, and the humidity in the box is not high at the initial stage of putting the items to be dried, so the drying effect is good

But there are still the following defects: First, because the air volume and air pressure gradually decrease during the flow process, and there is no uniformly dispersed hot air device in the working room, the direction of the heating source is single, so the temperature difference in the working room is very large, resulting in uneven drying of the samples , affect the quality of drying, and then affect the accuracy of experimental data; second, volatile substances will volatilize during the drying process, and the studio has not adopted relevant treatment devices, and the volatile substances contain acid, organic solvents, and polluting gases etc. Residues in the working room will cause cross-contamination, affect the drying quality, and be discharged into the air to cause pollution. In addition, there is no related fan on the dehumidification pipe, the air circulation rate is low, and the drying efficiency is slow

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