Automatic tobacco material drying intensity regulating system applicable to microwave and fixed bed hot air combined drying process as well as method using regulating system

Abstract

An automatic tobacco material drying intensity regulating system applicable to a microwave and fixed bed hot air combined drying process comprises a drying equipment body as well as an automatic feeding and discharging control unit, a hot air drying control unit, a cylinder wall temperature control unit, a detection control unit and a microwave power control unit which are connected with the drying equipment body and capable of controlling the working process and condition of the drying equipment body, wherein the feeding and discharging control unit consists of a feeding port, a discharging valve, a chute, a hanging basket and a receiver; each of the hot air drying control unit and the cylinder wall temperature control unit consists of a temperature sensor, an electric heater and a driving device; the detection control unit comprises a PLC (programmable logic controller), a computer and the like; the microwave power control unit comprises a microwave generator and a driving device of the microwave generator; each control unit is connected with the PLC and the computer and receives and executes instructions of the PLC and the computer. The system can control the power of each drying unit according to the moisture ratio in the material drying process, and combined dried products with more stable quality can be obtained finally.

Description

technical field [0001] The invention belongs to a control system of a tobacco drying device, in particular to a control system and a method capable of real-time regulation of the drying intensity of tobacco materials in a microwave fixed bed hot air combined drying process. Background technique [0002] Microwave fixed bed hot air combined drying equipment can take into account the advantages of microwave drying and fixed bed hot air drying at the same time, can change the position of the material to be processed, improve the uniformity of microwave, can realize effective control of microwave, speed up the drying rate, and better retain the dried material. Fragrance components such as the original color and fragrance of the material are obtained to obtain a dry product of good quality. [0003] However, the existing microwave fixed bed hot air combined drying equipment only controls the drying process of the material through experiments or empirically obtained data. Although...

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Problems solved by technology

For the same material with different initial moisture content, it is difficult to achieve the purpose of consistent processing with this timing control method

At the same time, for materials with different degrees of dehydration difficulty, the control method lacks universality

Therefore, the current regulatory methods cannot guarantee that tobacco processing enterprises can obtain cigarette products with stable quality on a large scale

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