Filter cell apparatus
AssigneeAB Bahco Ventilation
InventorsKarl-Axel G. Gustavsson, Holger A. Persson
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Abstract
A cell filter apparatus of the bag or stocking type having a housing is disclosed. A gas deflector and boundary wall between a raw gas duct and a dust chamber upstream from the filter cells form a tapering duct having an outlet passage for coarse dust particles at its narrow end. Either the deflector or the boundary wall is pivoted so that the size of the outlet passage can vary so as to remove coarse dust from the outlet passage. A gas blast for cleaning the filter cells in a direction to move the pivoted element so that the outlet passage is varied and cleaned.
Claims5
A compact cell filter apparatus comprising:
- a housing;
- at least one filter cell in said housing having a gas flow direction;
- a dust chamber adjacent to, and communicating with, the upstream end of said at least one cell;
- a raw gas duct on said housing, said gas flow direction being from said raw gas duct towards said at least one filter cell, said raw gas duct being adjacent to, and communicating with, the upstream end of said dust chamber, said raw gas duct including a boundary wall at its downstream end;
- filter cleaning means communicating with the downstream end of said at least one cell, said filter cleaning means including gas blast means for providing gas blast shocks in a direction opposite that of said gas flow direction;
- gas deflector means located between said dust chamber and said raw gas duct, said gas deflector means and said boundary wall together forming a tapering duct for supplying raw gas from said raw gas duct to said dust chamber, one of said gas deflector means and said boundary wall being at least partially movable in response to said gas blast shocks, said tapering duct narrowing to a passage whose width varies in response to the movement of said one of said gas deflector means and said boundary wall, whereby said movement of said one of said gas deflector means and said boundary wall helps remove dust particles from said passage.
Dependencies are inferred from the claim text.