A device for dosing powdered materials

Details A device for dosing powdered materials A device for dosing powdered materials

G - Physics

01

F

G01F 11/02 (2006.01) A47K 5/10 (2006.01) F04B 43/12 (2006.01) G01F 11/08 (2006.01)

Patent

CA 2257027

A method is provided for dosing powdered material from a supply container having a vertically suspending discharge tube of an elastically deformable material, by squeezing said discharge tube at locations, which periodically move along a part of the discharge tube length. In this method, the squeezing of the discharge tube is effected in a similar way as the flexible tube of a peristaltic pump of the type, with which the tube engages a support wall on one side and with which a peristaltic mechanism is provided on the opposite side for squeezing the tube according to a travelling wave, the length of which does not exceed one single wave length.

Méthode de dosage de matières pulvérulentes provenant d'un conteneur d'alimentation ayant un tube de décharge suspendu verticalement à base de matière élastiquement déformable, par compression dudit tube de décharge au niveau d'emplacements, qui se déplacent périodiquement le long d'une partie de la longueur du tube de décharge. Selon cette méthode, la compression du tube de décharge est effectuée de manière similaire à celle du tube souple d'une pompe péristaltique, ce qui permet au tube d'entrer en prise avec une paroi de support sur un côté et ce qui prévoit un mécanisme péristaltique sur le côté opposé pour comprimer le tube selon une onde progressive, dont la longueur ne dépasse pas une longueur d'onde unique.

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