Decantation centrifuge

B - Operations – Transporting – 04 – B

Patent

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Details

B04B 1/20 (2006.01) B04B 15/12 (2006.01) C02F 11/12 (2006.01)

Patent

CA 2253464

The invention refers to a decanter centrifuge particularly for sludge centrifugation, incorporating a drum (1), a rotor (12) arranged therein and equipped with a helical screw (14) for feed of sludge, a sludge outlet and a reject outlet (11, 5) and a flush washing device (16) for washing (flushing) in countercurrent to the dewatered sludge. In the rotor (12) in close connection to the blades (15) of the helical screw (14) are provided a number of threaded holes for connection of the nozzles (17) of the flush washing device (16). In response to the washing requirement, certain or entire groups of threaded holes are closable by means of sealing plugs (23), so that the washing (flushing) can be effected in several consecutive steps with portions without flushing inbetween.

L'invention concerne une centrifugeuse de décantation, en particulier pour la centrifugation de boues, comprenant un tambour (1), un rotor (12) disposé à l'intérieur de celui-ci et équipé d'une vis hélicoïdale (14) pour l'alimentation des boues, une sortie pour les boues (11), une ouverture de rejet (5) et un dispositif de lavage rapide (16) pour effectuer un lavage rapide à contre-courant par rapport aux boues essorées. Le rotor (12) comporte, près des lames (15) de la vis hélicoïdale (14), des trous filetés permettant de monter les buses (17) du dispositif de lavage rapide (16). Selon le lavage requis, certains trous filetés ou des groupes entiers de trous filetés peuvent être fermés par des bouchons d'étanchéité (23), de sorte que les lavages rapides peuvent se faire en plusieurs étapes consécutives, certaines parties entre ces parties lavées n'étant pas soumises au lavage.

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