Patent ID: 6991092

Claim:
A belt conveyor for transporting loose tobacco materials, comprising: a transporting belt, equipped with a vibratory sub-assembly with independent driving means, a feeding channel placed over the transporting belt, wherein the vibratory sub-assembly of the transporting belt ( 3 ) comprises at least two separate vibratory portions (V 1 , V 2 , V 3 ), each comprising at least one roller ( 10 a ) having eccentric elements ( 10 b ) and symmetrically arranged counterweights ( 10 c ), wherein in case of using eccentric elements ( 10 b ) of the same active radii on the rollers ( 10 a ) of all the vibratory portions (V 1 , V 2 , V 3 ), the distance between the transporting belt ( 3 ) and the axes of the rollers ( 10 a ) of the starting vibratory portion in which feeding of the loose tobacco material takes place is minimal, and the distance from the transporting belt ( 3 ) to the axes of the rollers ( 10 a ) of successive vibratory portions (V 2 , V 3 ) is an increasing function, and wherein when the axes of the rollers ( 10 a ) of all the vibratory portions (V 1 , V 2 , V 3 ) are at the same distance from the transporting belt ( 3 ) then the active radius of the eccentric elements ( 10 b ) of the starting vibratory portion (V 1 ) is the largest, and the radius decreases for the eccentric elements ( 10 b ) of the rollers ( 10 a ) of successive vibratory portions (V 2 , V 3 ), and wherein the roller ( 10 a ) of each of the vibratory portions (V 1 , V 2 , V 3 ) is adjustable to provide independent adjustment of magnitude and direction of a vibration amplitude vector, and the eccentric elements ( 10 b ) provide independent adjustment of frequency of the transporting belt vibrations, irrespective of speed of the transporting belt ( 3 ).