Hopper type microwave vacuum composite dehumidification drying device

Abstract

The invention discloses a hopper type microwave vacuum composite dehumidification drying device which comprises a vacuum chamber, a raw material bin, a packaging bin, a vortex fan, a vacuum pump and a microwave source. The vacuum chamber is communicated with a negative pressure pipe through a vacuum chamber feeding sucking valve, the packaging bin is communicated with the negative pressure pipe through a packaging bin feeding sucking valve, and an air inlet of the vortex fan is communicated with the negative pressure pipe. A raw material bin discharging valve at the lower end of the raw material bin is communicated with one end of a feeding pipe, and the vacuum chamber is communicated with the other end of the feeding pipe through a vacuum chamber feeding valve. The vacuum chamber is communicated with one end of a vacuum pipe through a vacuum chamber exhaust valve, the vacuum pump is communicated with the other end of the vacuum pipe through a vacuum baffle valve, the vacuum chamber is connected with one end of a discharging pipe through a vacuum chamber discharging valve, the packaging bin is connected with the other end of the discharging pipe through a packaging bin feeding valve, and the microwave source is connected with the vacuum chamber through a waveguide flange. The drying degree is controlled, and the hopper type microwave vacuum composite dehumidification drying device improves drying efficiency, saves energy, reduces emission, is environmentally friendly and maintains material properties.

Description

technical field [0001] The invention relates to the technical field of drying equipment, and more specifically, relates to a hopper-type microwave vacuum composite dehumidification and drying device used before molding and processing of engineering plastic injection molding machines. Background technique [0002] At present, the drying treatment method of engineering plastic raw materials after extrusion and granulation generally adopts hot air drying hoppers in the industry in the world, and blows electric heating wires through hair dryers to diffuse heat, which not only consumes a lot of energy, but also has low efficiency; The drying method adopts the drying principle of honeycomb rotary molecular sieve. The main disadvantage is that the regeneration process of molecular sieve will consume a lot of energy. At the same time, the drying process will also cause oxidation of raw materials, which is energy-consuming and not environmentally friendly. [0003] Therefore, due to ...

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Problems solved by technology

[0004] The purpose of this invention is to provide a hopper-type microwave vacuum composite dehumidification and drying device, which is a new type of application equipment combining microwave technology and vacuum technology. It has both the advantages of microwave and vacuum drying, and overcomes the long period of conventional vacuum drying. , the disadvantage of low efficiency

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