Tobacco leaf baking controlling instrument

Abstract

The invention discloses a tobacco leaf baking controlling instrument. The controlling instrument comprises a circulating fan, a temperature and humidity sensor, a heating power suppler, a moisture removing device and a controller; the circulating fan is used for providing air for a tobacco chamber and circulating air and heat; the temperature and humidity sensor is used for collecting temperatureand humidity data of the tobacco chamber; the heating power suppler is used for providing heat for the tobacco chamber; the moisture removing device is used for removing moisture to dehydrate tobaccoleaves; the controller is connected with the circulating fan, the temperature and humidity sensor, the heating power suppler and the moisture removing device separately, and used for adjusting the airflow speed, temperature, humidity and heat in the tobacco chamber and the dehydration amount of the tobacco leaves respectively; the controller includes a frequency conversion module, and the frequency conversion module is connected with the circulating fan, a main panel in the controller and a power panel, and used for adjusting the frequency, the rotating state and the circulating mode of the circulating fan. By means of the controlling instrument, equipment can be effectively protected, the service life can be effectively prolonged, the energy consumption is reduced, the modulation level of the tobacco leaves is improved, and the economic benefit of tobacco leaf producers and economic managers is increased; meanwhile, the production investment is lowered, and the waste of materials andlabor is avoided.

Description

technical field [0001] The invention relates to the field of tobacco leaf preparation, in particular to a tobacco leaf control instrument—a tobacco leaf curing control instrument. Background technique [0002] At present, in the tobacco leaf modulation of domestic dense barns, the circulation fan in the actuator of the control equipment is connected outside the control module, that is, the controller cannot control the circulation fan. The circulating fan is a 4 / 6-pole motor and a No. 7 axial fan. Under the 50Hz grid power supply, the speed at high speed is 1450r / min, the power is 2.2kW for three-phase and 2.2kW for single-phase, and 1.5kW for low speed. kW, allow fluctuation ±20%. The 4 / 6-pole motor is an asynchronous motor that is started directly, and the current is very large when starting, which is 6 to 8 times the rated current, and the starting current will also cause effects: First, the power supply voltage drops when starting, especially the transformer power suppl...

AI Technical Summary

Problems solved by technology

The 4 / 6-pole motor is an asynchronous motor that is started directly, and the current is very large when starting, which is 6 to 8 times the rated current, and the starting current will also cause effects: First, the power supply voltage drops when starting, especially the transformer power supply. The smaller the capacity, the greater the voltage drop; the second is that the starting current will cause loss in the circuit and inside the motor, causing the motor to heat up, and the motor of the relay, contactor, and circulating fan is easily damaged

Third, the relative energy consumption in the process of modulating tobacco leaves is relatively high

The fourth is that the tobacco leaves are modulated under the strong wind force, not only will there be a large amount of energy loss, but also the aroma substances of the tobacco leaves will be damaged under the action of strong wind during the modulation process, and the taste of the tobacco leaves after modulation is not good.

Fifth, the modulation time is too long, which consumes more coal and electricity, and the utilization rate of the barn is relatively low

Sixth, the circulator cannot run alternately in the forward and reverse directions, resulting in a large temperature and humidity difference between the upper and lower tobacco leaves. During the brewing process of the tobacco leaves, due to the inconsistency of the excessive temperature and humidity difference between the upper, middle and lower stages, the tobacco leaves will react during the process of blending the tobacco leaves. The process of dehydration and biochemical reaction is different, some are excessive, some are not enough, the appearance is uneven in color, some tobacco leaves are too thin, some tobacco leaves are not yellow enough, and blue veins or floating blue appear. The tissue structure of some tobacco leaves is too tight, some tobacco leaves hang ash, and some even have smoke mold in the barn, that is to say, the tobacco leaves that should be prepared are not prepared

[0003] Analysis of the reasons for the poor modulation of tobacco leaves: First, the motor of the No. 7 circulating fan currently used is a 4 / 6-pole motor with only 2 gears, which cannot be automatically adjusted to meet different gears that need to be met in different stages (also called Different frequencies, different wind speeds); second, the circulation fan can only turn from one direction, and the controller cannot control the circulation fan to run alternately in the forward and reverse directions, etc. Technical defects, that is, the current controller cannot meet the requirements of scientific modulation of tobacco leaves. needs

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