Vacuum compensation valve

A - Human Necessities – 47 – L

Patent

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Details

A47L 9/00 (2006.01)

Patent

CA 2158452

Apparatus for vacuum collection of material, where a vacuum source is used for creating a vacuum to draw air into a displacement chamber, and at least two hoses are connected to the displacement chamber for vacuum collection of materials from various locations. Pressure sensors are connected to sense the pressure in each hose, dampers are operable in response to the relative pressures between the hoses so as to vary the effective area of the respective connections between the hoses and the displacement chamber in order to equalize and optimize the relative pressures, and automatic control means such as a programmable logic controller are employed to operate the dampers in response to the sensed pressures.

Appareil d'aspiration de matériaux comprenant une source d'appel d'air est utilisée pour créer un vide dans une chambre de déplacement et comprenant au moins deux tuyaux reliés à la chambre de déplacement pour aspirer les matériaux dans celle-ci. Des capteurs de pression sont reliés à chaque tuyau et des registres sont actionnés en réponse aux pressions relatives entre les tuyaux de manière à faire varier la surface efficace des points de branchement respectif entre les tuyaux et la chambre de déplacement afin d'équilibrer et d'optimiser les pressions relatives. Une commande automatique, notamment une commande logique programmable, est utilisée pour faire fonctionner les registres en réponse aux pressions mesurées.

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