Tunnel-type vegetable microwave dryer and its automatic anti-no-load method

Abstract

The invention discloses a tunnel type vegetable microwave drying machine and an automatic no-load preventing method thereof. The tunnel type vegetable microwave drying machine comprises a conveying system, a heater and a no-load preventing system, wherein the heater is fixed on the conveying system and comprises a waveguide, a moisture exhausting fan, a magnetic control tube, a stirrer and the like. The stirrer and the magnetic control tube are fixed at the top of a box body of the waveguide, and a moisture exhausting port is formed in one end of the top of the waveguide and connected with the moisture exhausting fan. The no-load preventing system comprises a computer, a control console and an industrial camera, wherein the industrial camera is installed at the top of the other end of the waveguide and obtains RGB images on a white conveying belt at the material input end in the drying machine in real time, the computer is utilized to process the images and obtain the area of each material-free area on the white conveying belt, when the area of the single material-free area is larger than the set no-load area, the control console enables the magnetic control tube to stop working, the magnetic control tube and the conveying belt are protected, and otherwise, the magnetic control tube runs normally. The drying process of the whole drying machine is automatic, the productivity is high, and the drying and processing requirements of different agricultural products are met.

Description

technical field [0001] The invention relates to an agricultural product processing machine, in particular to a tunnel-type vegetable microwave dryer for drying vegetables and an automatic no-load prevention method thereof. Background technique [0002] Drying is one of the important means of agricultural product preservation. Dehydrated and dried agricultural products have the advantages of convenience, health, no need for refrigeration and low transportation costs. Post-harvest drying of agricultural products is of great significance to ensure quality and reduce losses. At present, the drying methods mainly include hot air drying, vacuum drying, freeze drying and microwave drying, etc., but the commonly used hot air drying takes a long time and is slow, and forms a negative temperature gradient from the surface to the inside, which is not conducive to water evaporation. Dry the surface first. It will hinder the diffusion of internal moisture, and the drying quality cannot b...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a tunnel for overcoming the disadvantages of easy accumulation and bare leakage of the conveyor belt due to poor uniformity of agricultural products in the drying process, resulting in no-load operation of the magnetron, damage to the magnetron, and burning of the conveyor belt. Type Vegetable Microwave Dryer and Its Automatic No-load Prevention Method

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