A method and an apparatus for controlling a flow of pulp...

Details A method and an apparatus for controlling a flow of pulp... A method and an apparatus for controlling a flow of pulp...

D - Textiles, Paper

21

C

D21C 7/08 (2006.01) D21D 5/18 (2006.01) D21D 5/28 (2006.01) F04D 7/04 (2006.01)

Patent

CA 2729452

An apparatus and a method for controlling a flow of pulp suspension from a container (104, 204) where the pulp suspension is processed and/or stored, which container (104, 204) is pressurized to a pressure (p?) and is provided with at least one outlet (108, 110, 206) for the outflow of pulp suspension, a pump device (112), provided with an inlet means (114) and an outlet means (116), via its inlet means (114) being connected (301) to the container (104, 204). Pulp suspension is fed into the pump device (112) via the inlet means (114) and is fed out from the pump device (112) via the outlet means (116). The pump device (112) is forced to provide a controlled decrease in pressure (.DELTA.p) which the pulp suspension is subjected to in the pump device (112) during its transport from the inlet means (114) to the outlet means (116), and the flow from the container (104, 204) is controlled by adjusting the controlled decrease in pressure (.DELTA.p).

Linvention porte sur un appareil et sur un procédé pour commander un écoulement dune suspension de pâte à partir dun contenant (104, 204) où la suspension de pâte est traitée et/ou stockée, lequel contenant (104, 204) est pressurisé à une pression (p ?) et comporte au moins une sortie (108, 110 ,206) pour la sortie de la suspension de pâte, un dispositif de pompe (112), comportant un moyen dentrée (114) et un moyen de sortie (116), et reliée (301), par lintermédiaire de son moyen dentrée (114), au contenant (104, 204). Une suspension de pâte est alimentée à lintérieur du dispositif de pompe (111) par lintermédiaire du moyen dentrée (114) et est délivrée en sortie du dispositif de pompe (112) par lintermédiaire du moyen de sortie (116). Le dispositif de pompe (112) est forcé pour fournir une diminution contrôlée de pression (?p) à laquelle est soumise la suspension de pâte dans le dispositif de pompe (112) durant son transport du moyen dentrée (114) au moyen de sortie (116), et lécoulement à partir du contenant (104, 204) est commandé par lajustement de la diminution de pression contrôlée (?p)

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