Dust filter with filter sleeve, emission electrode and...

B - Operations – Transporting – 03 – C

Patent

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Details

B03C 3/155 (2006.01) B03C 3/02 (2006.01) B03C 3/12 (2006.01)

Patent

CA 2413993

The invention relates to a dust filter, with at least one filter sleeve (1), closed at the bottom end thereof, impinged on from the outside by the dust- containing gases, comprising at least one electrofilter (3), with at least one collecting electrode (4) and at least one emitting electrode (2), which lies at a negative potential relative to the at least one collecting electrode (4). According to the invention, the filter effect may be improved, by means of increasing the degree of dust separation, whereby the at least one emission electrode (2) is arranged behind the at least one collecting electrode (4), as viewed from the filter sleeve (1). The filter sleeve (1) and associated support cages (7) are preferably electrically isolated. During cleaning of the filter sleeves (1) the ionised dust particles (5) fall for the greater part on the directly adjacent collecting electrode (4).

Filtre à poussière qui comporte au moins une manche filtrante (1) fermée à son extrémité inférieure, sur laquelle sont envoyés depuis l'extérieur les gaz contenant de la poussière, et au moins un électrofiltre (3) pourvu d'au moins une électrode de précipitation (4) et d'au moins une électrode à couronne (2) soumise à un potentiel négatif par rapport à l'électrode de précipitation (4). Le filtre selon la présente invention permet d'améliorer l'effet de filtrage par une augmentation du degré de dépôt des poussières. A cet effet, vue depuis la manche filtrante (1), l'électrode à couronne (2) au moins est placée derrière l'électrode de précipitation (4) au moins. Les manches filtrantes (1) et les éventuels paniers de soutien (7) sont avantageusement isolés électriquement. Lors du nettoyage des manches filtrantes (1), les particules de poussière ionisées (5) se déposent pour la plus grande partie sur les électrodes de précipitation (4) qui se trouvent à proximité immédiate.

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