Filter system with in situ cleaning of an operating filter unit
First Claim
1. A filter system comprising a filter unit and a cleaning unit, said filter unit including a series of compartments, each compartment defining a fluid flow path between a pair of spaced compartment openings, the flow path of each compartment being separate from the flow paths of the other compartments, said cleaning unit being disposed for selective alignment with each compartment of said filter unit, including a pair of ducts disposed for communication with the openings, respectively, of a selected compartment, having means for moving said ducts toward and away from respective openings of a selected compartment aligned with said cleaning unit, having means for forming a seal around the perimeter of the respective openings, and having means for causing cleaning fluid to flow from one of said ducts through the selected compartment to the other of said ducts, and means for causing relative movement between said filter unit and said cleaning unit to align said cleaning unit with different compartments of said filter unit
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Accused Products
Abstract
A filter system comprises a filter unit and a cleaning unit which cleans the filter unit while the filter unit is operating normally. The filter unit is compartmentalized. During cleaning, an individual compartment is isolated between a pair of ducts of the cleaning unit and is cleaned by applying pulses of a cleaning fluid to one of the ducts and suction to the other duct. The filter unit is rotatable relative to the cleaning unit to align successive compartments of the filter unit with the cleaning unit.
35 Citations
9 Claims
- 1. A filter system comprising a filter unit and a cleaning unit, said filter unit including a series of compartments, each compartment defining a fluid flow path between a pair of spaced compartment openings, the flow path of each compartment being separate from the flow paths of the other compartments, said cleaning unit being disposed for selective alignment with each compartment of said filter unit, including a pair of ducts disposed for communication with the openings, respectively, of a selected compartment, having means for moving said ducts toward and away from respective openings of a selected compartment aligned with said cleaning unit, having means for forming a seal around the perimeter of the respective openings, and having means for causing cleaning fluid to flow from one of said ducts through the selected compartment to the other of said ducts, and means for causing relative movement between said filter unit and said cleaning unit to align said cleaning unit with different compartments of said filter unit
Specification