Method and apparatus for feeding a pulverized material

G - Physics – 01 – G

Patent

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G01G 13/02 (2006.01) G01F 11/28 (2006.01)

Patent

CA 2494995

An apparatus and method are provided for feeding a pulverized material which includes a first storage container (264) for receiving and for discharging a flow of the pulverized material. The apparatus includes a separation chamber (278) attached to the first storage container (264), which is alternatiely fill up or to empty out with the pulverized material. A second storage container (288) is connected with an outlet of the sepration chamber (278), for alternately filling the second storage container (288) in accordance to a predetermined storage amount of pulverized material. Discharging means (294) are attached to an outlet of the second storage container (288) for continuously controlling the discharge of the pulverized material. Conveying means (296) are arranged with the discharging means (294) for conveying the material discharged. Means (302, 304) are provided for calculating the amount of pulverized material in the second storage container (288), for alternately controlling the filling up and emptied out of the second storage means (288) in accordance with a predetermined storage level or weight of the pulverized material. And, control means (322) for processing signals provided by the means for calculating the amount of pulverized material in the second storage container (288) for alternately opening or closing the separation chamber (278) for the filling of the second storage container (288).

La présente invention porte sur un appareil et sur un procédé pour l'amenée d'un matériau en poudre. L'appareil comprend un premier conteneur (264) destiné à recevoir et évacuer un flux de matériau en poudre et une chambre de séparation (278) reliée au premier conteneur de stockage (264) qui est alternativement rempli ou vidé. Un second conteneur (288) est raccordé à un orifice d'évacuation de la chambre de séparation (278) de façon à remplir alternativement ce second conteneur (288) selon une quantité de stockage prédéfinie du matériau en poudre. Un dispositif d'évacuation (294) est relié à un orifice d'évacuation du second conteneur (288) de façon à contrôler en continu l'évacuation du matériau en poudre. Un dispositif de transport (296) est combiné au dispositif d'évacuation (294) de façon à faciliter le transport du matériau évacué. Des moyens (302, 304) sont prévus pour calculer la quantité de matériau en poudre se trouvant dans le second conteneur (288) de façon à contrôler alternativement le remplissage et le vidage du second conteneur (288) en fonction d'un niveau de stockage ou d'un poids prédéfini du matériau en poudre. L'invention porte également sur un contrôleur (322) destiné à traiter des signaux envoyés par le calculateur de quantité de matériau en poudre se trouvant dans le second conteneur (288) afin d'ouvrir ou fermer alternativement la chambre de séparation (278) pour le remplissage du second conteneur (288).

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