System for controlling the proportion of leaf vein in tobacco ra

Details System for controlling the proportion of leaf vein in tobacco ra System for controlling the proportion of leaf vein in tobacco ra

1984-07-27

1987-02-03

Smith, Jerry

Boots, shoes, and leggings

364152, 364469, 131312, G05B 1302, A24B 510, G06F 1546

Patent

active

046412654

ABSTRACT:
A new system for controlling the proportion of leaf vein in a tobacco raw material treating process is provided. In general, the process involves feeding a raw leaf tobacco to a humidity controller to impart thereto moisture and temperature necessary for the removal of leaf vein, then peeling off the leaf tobacco into lamina and leaf vein by leaf vein removing means and subsequently separating the lamina and leaf vein from each other by winnowing means. The new system includes means for measuring the flow rate of the raw leaf tobacco; means for measuring the moisture content of the leaf tobacco moistened by said humidity controller; sampling switching means for selecting by switching the lamina from which winnowing means in said raw material treating process is to be sampled for measuring the proportion of leaf vein; means for measuring the proportion of leaf vein in the lamina samples by said sampling switching means; and arithmetic controller means for inputting the results of measurement from said flow rate measuring means and said moisture content measuring means, calculating an optimum air velocity for the winnowing means in said raw material treating process so that the proportion of leaf vein is within the range of a preset value and controlling the winnowing means on the basis of the calculated value, and at the same time inputting as a feedback signal the result of measurement from said leaf vein proportion measuring means and correcting said calculated value in accordance with said feedback signal.

REFERENCES:
patent: 3309507 (1967-03-01), Schlein
patent: 4045657 (1977-08-01), Falke
patent: 4214300 (1980-07-01), Baslow et al.
patent: 4323083 (1982-04-01), Cogbill, II

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