Oscillating-type heating drying system and method used for blanks

Abstract

The invention belongs to the technical field of oscillating-type heating drying, and discloses an oscillating-type heating drying system and system used for blanks. The oscillating-type heating drying system used for the blanks comprises a drying chamber for placing the blanks to be dried, an air return pipe, a circulating fan, a burner, a first air feeding pipe, an oscillating valve, a second air feeding pipe and a third air feeding pipe, wherein the air return pipe, the circulating fan, the burner and the first air feeding pipe are sequentially connected; the oscillating valve comprises a barrel-shaped valve body and a rectangular valve plate; an inlet end of the valve body is connected with an outlet of the first air feeding pipe, a first outlet end of the valve body is connected with an inlet of the second air feeding pipe, and a second outlet end of the valve body is connected with an inlet of the third air feeding pipe. The oscillating-type heating drying method includes the following steps that the rectangular valve plate periodically rotates around the axis of the valve body, and the gas flow of the second air feeding pipe and the gas flow of the third air feeding pipe periodically change along with the periodical rotating of the rectangular valve plate; water steam is discharged out by the circulating fan, gas is provided to the burner, and the gas is heated by the burner.

Description

technical field [0001] The invention belongs to the technical field of oscillating heating and drying, and in particular relates to an oscillating heating and drying system for green bodies and a drying method thereof. Dry. Background technique [0002] At present, the direct-fired rapid dryer commonly used for drying the green body is a batch dryer. Its working principle is: use natural gas, city gas or liquefied petroleum gas as fuel, ignite the burner through an automatic ignition system, and burn the diluted The combustion products are mixed with the circulating air sent by the circulating fan and enter the drying chamber as the drying medium, and then the body to be dried is heated in the drying chamber by convection, and the air is drawn out from the return air pipe by the circulating fan. In the above drying process, the circulation and movement of the drying medium (hot air) affect the uniformity of temperature and humidity in the drying room, and ultimately affect ...

AI Technical Summary

Problems solved by technology

Taking electric porcelain insulators as an example, the difference in temperature and humidity in different areas of the drying room during the drying process will prolong the drying time, and may cause defects such as umbrella drop and cracking of electric porcelain insulators

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