Automatic weighing device for detecting moisture adsorption and desorption performance of tobaccos

Abstract

The utility model discloses an automatic weighing device for detecting the moisture adsorption and desorption performance of tobaccos. The device comprises a sample placing unit arranged in an adsorption and desorption chamber and a weighing unit for detecting the weight of a sample. The device is characterized in that the sample placing unit comprises a rotating disc provided with a plurality ofsample grooves and a rotating disc driving mechanism. The driving mechanism comprises a rotating motor and a lifting cylinder, the rotating motor is fixed to a sliding block of the lifting cylinder and can reciprocate up and down under the action of the lifting cylinder, a rotating shaft of the rotating motor is fixedly connected with the rotating disc, a coding disc is arranged on the rotating motor, and the weighing unit comprises a mass detection module arranged in a mass detection module protection chamber and a weighing tray which is arranged in the adsorption and desorption chamber and is located under the sample disc. The device has the advantages that the automation degree is high, human interference is reduced, the experiment accuracy is improved, the real-time data detection andautomatic recording of multiple samples under the user-defined acquisition frequency (6-30 seconds / sample) can be realized, and the detection efficiency is improved.

Description

technical field [0001] The invention relates to an automatic weighing device, in particular to an automatic weighing device for testing the moisture absorption and desorption performance of tobacco. Background technique [0002] Sheet tobacco or shredded tobacco is a porous medium composed of complex organic substances. During the heat and humidity treatment of tobacco processing, some changes may be made to the pore structure of tobacco leaves or shredded tobacco. The physical and chemical properties cause certain changes in the ability of the water in the processed tobacco or cut tobacco samples to absorb water and remove water under certain temperature and humidity conditions. When evaluating the isothermal adsorption and desorption capacity and change law of treated tobacco or shredded tobacco samples to moisture, it usually includes multiple continuous heat and mass transfer processes. Only through dynamic online detection of this process can the sample moisture adsorpt...

AI Technical Summary

Problems solved by technology

However, the device has the disadvantage of low detection efficiency due to single-sample detection in testing applications.

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