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1. US20070210013 - Filter apparatus and method with simplified filter belt indexing and sealing

Office
États-Unis d'Amérique
Numéro de la demande 11370393
Date de la demande 07.03.2006
Numéro de publication 20070210013
Date de publication 13.09.2007
Numéro de délivrance 07913854
Date de délivrance 29.03.2011
Type de publication B2
CIB
B01D 33/04
BTECHNIQUES INDUSTRIELLES; TRANSPORTS
01PROCÉDÉS OU APPAREILS PHYSIQUES OU CHIMIQUES EN GÉNÉRAL
DSÉPARATION
33Filtres avec éléments filtrants mobiles au cours de l'opération de filtration
04à bandes filtrantes ou analogues supportées par des cylindres imperméables pour la filtration
B01D 33/056
BTECHNIQUES INDUSTRIELLES; TRANSPORTS
01PROCÉDÉS OU APPAREILS PHYSIQUES OU CHIMIQUES EN GÉNÉRAL
DSÉPARATION
33Filtres avec éléments filtrants mobiles au cours de l'opération de filtration
056Structure des bandes filtrantes ou des courroies de support, p.ex. dispositifs pour les centrer, les monter ou assurer leur étanchéité
Déposants Bratten Jack R.
Hartshorne Bryn
Inventeurs Bratten Jack R.
Hartshorne Bryn
Mandataires Benefiel John R.
Titre
(EN) Filter apparatus and method with simplified filter belt indexing and sealing
Abrégé
(EN)

A filter apparatus includes a endless filter belt loop disposed in an interior space within a tank which receives liquid to be filtered. The filter belt has a series of closely spaced parallel guide-flight bars attached which are successively engaged by an extendible element on a pivot plate which is periodically oscillated to under the filter belt. The bars are received in guide spaces to hold the filter belt in position over a filter support having openings allowing filtering flow therethrough. Collapsible sealed hoses partially filled with liquid are used as edge seals extending along the guide spaces over side edges of the filter belt and are expanded by engagement of an upper end of each of the hoses with a squeeze member on the pivot plate. The squeeze members are moved off the hoses when the pivot plate is oscillated to advance the filter belt during indexing to release the sealing pressure and allow filter belt indexing movement. The pivot plate oscillation also operates a beater bar to guide the belt to dislodge solids from the belt. In a vacuum version, the filter belt support is provided by molded plastic support pieces assembled over a solid curving support plate in the tank.

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