Multi-sample tobacco moisture adsorption and desorption performance detection device

Abstract

A multi-sample tobacco moisture adsorption and desorption performance detection device comprises a gas mixing unit, an adsorption and desorption unit, a weighing unit, a data acquisition and control unit, and the gas mixing unit and the adsorption and desorption unit are independently arranged in two parallel box bodies respectively. The multi-sample tobacco moisture adsorption and desorption performance detection device has the characteristics that: 1) simultaneous detection of multiple samples can be achieved in an adsorption and desorption chamber, the efficiency is high, a driving module can be used for driving a sample disc to rotate and lift to finish sequential detection of the quality of the multiple samples, and the detected sample quantity is large; 2) the temperature of the adsorption and desorption chamber is uniform and consistent: heating and refrigerating circulators are arranged around the adsorption and desorption chamber and an upper cover for circular control by adopting a heating and refrigerating medium; and 3) a surface temperature detector is arranged, so that the surface temperature of the sample can be detected while the quality of the sample is detected, the change condition of moisture in the sample along with time is analyzed and detected, the moisture adsorption and desorption rates in different samples and the result of moisture content in a balanced state are obtained, and the moisture adsorption and desorption performance of the tobacco is represented.

Description

technical field [0001] The invention relates to a detection device for moisture adsorption and desorption performance of tobacco, in particular to a detection device for multi-sample tobacco moisture adsorption and desorption performance. Background technique [0002] Sheet tobacco or shredded tobacco is a porous medium composed of complex organic substances. The heat and humidity treatment during tobacco processing will cause some changes in the pore structure of tobacco leaves or shredded tobacco. The physical and chemical properties of the surface cause certain changes in the ability of the treated tobacco or shredded tobacco to absorb moisture and remove moisture under certain temperature and humidity conditions. When evaluating the change law of the isothermal adsorption and desorption capacity of tobacco sheets or shredded tobacco before and after treatment, it usually involves multiple continuous heat and mass transfer processes. Effective detection and evaluation of...

AI Technical Summary

Problems solved by technology

However, this device has the following disadvantages in testing applications: 1) During high-temperature and high-humidity testing, condensed water will be generated at the bottom of the sealing cover above the adsorption-desorption chamber due to temperature differences, which will drip on the sample, resulting in deviations in quality testing; 2) testing During the process, the sensor detects the temperature and humidity of the treatment atmosphere in the adsorption-desorption chamber, and the temperature of the sample itself cannot be directly detected; 3) It is a single-sample detection, and the detection efficiency is low

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