Method and system for radiation detecting cut tobacco filling value

Abstract

In the corresponding positions over and below the conveyer belt, a gamma ray source and a gamma ray detector are set; and in the position on the conveyer belt before the gamma ray source, a roller type thickness measuring unit is set. The output voltage U0 with no cut tobacco passing through is first obtained via the detector, and the output voltage Ui with cut tobacco in the thickness of h passing through is then obtained. All the measured values are fed to the control processor connected to the thickness measuring unit and the cut tobacco filling value d may be calculated through calculation based on the formula d=h / Kln(U0 / Ui), where the coefficient K is obtained via dynamic calibration and correction.

Description

technical field [0001] The invention relates to a tobacco processing technology and equipment, in particular to a method and system for measuring the filling value of shredded tobacco. Background technique [0002] The determination of filling power of shredded tobacco refers to the volume occupied by unit mass of shredded tobacco of a cigarette under the continuous action of a certain time and a certain pressure. Its principle is to put a certain quality of shredded tobacco in the measuring barrel, and measure the volume maintained by the shredded tobacco under the action of a certain time and a certain pressure. Filling value is one of the important factors affecting the quality of rolled cigarettes. When the filling value is large, the amount of shredded tobacco used in the rolled cigarette is less, the cigarette has better air permeability when burning, and the content of tar, nicotine and carbon monoxide in the smoke is also less. Good; when the filling value is small,...

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Problems solved by technology

Although the patent No. ZL 00 2 35663.5 proposes weighing by radiation method, it does not disclose how to specifically solve the above two problems

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