Method and apparatus for automatic and continuous pneumatic...

A - Human Necessities – 24 – C

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A24C 5/39 (2006.01)

Patent

CA 2249391

A continuous pneumatic tobacco conveyance system is described which automatically controls the rate at which tobacco is fed into the conveyance system and automatically controls the velocity of the tobacco which is pneumatically conveyed. The system utilizes a plurality of programmable logic controllers (100, 101, 102) for analyzing the velocity of the tobacco in the system and the amount of tobacco required and currently existent in cigarette making machine (80). The system compensates for correct airflow and velocity of the tobacco in the pneumatic piping by controlling the rate at which tobacco is fed into the conveyance system and controlling the airflow required to move the tobacco at a continuous velocity by ajusting a flow control valve (51) attached to a vacuum source.

L'invention concerne un système automatique et continu pour transporter le tabac. Ce système commande automatiquement la vitesse à laquelle le tabac est amené dans le système de transport ainsi que la vitesse à laquelle le tabac est transporté par le système pneumatique. Ce système utilise plusieurs contrôleurs logiques programmables (100, 101, 102) pour analyser la vitesse du tabac dans le système et les quantités de tabac requises et existantes dans la machine à faire les cigarettes (80). Ce système assure une compensation pour obtenir une vitesse et un écoulement d'air corrects dans la canalisation pneumatique. Dans ce but, il contrôle la vitesse à laquelle le tabac est envoyé dans le système de transport et l'écoulement d'air requis pour déplacer le tabac à une vitesse continue en réglant une soupape de limitation de débit (51) reliée à une source de vide.

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