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US 4,904,282 AGranted
Filter apparatus and method of operating same
AssigneeLTG Lufttechnische GmbH
InventorsHelmut Stuble, Heinz Burkhardt, Josef Velinsky
Life of this patent
Estimating the term…
Abstract
An apparatus for filtering air containing textile impurities, comprises an air-permeable, fixed collecting device preferably of accordion shape, for separating the textile impurities. The collecting device has a number of filtering portions which can be cleaned by at least one suction device.
Claims20
A filter apparatus for removing fiber fragments from air drawn from a region of a textile machine, comprising:
- a filter housing;
- a fixed filter collector in said housing formed with a plurality of active filter portions permeable to air and having generally extended surfaces upon which textile fragments collect, each surface having a recess defined by two side walls inclined to one another;
- an inlet on said housing through which air entraining filter fragments is drawn into said housing and an outlet on said housing through which air freed from said fragments is discharged from said housing after passing through said fixed filter collector and depositing said filter fragments on said surfaces;
- and
- pneumatic cleaning means in said housing for separately cleaning said surfaces of said active filter portions, said pneumatic cleaning means including:
- a plurality of suction devices juxtaposed with said surfaces of said portions on a side thereof upon which said fiber fragments collect, said suction devices with adjoining walls forming a suction nose projecting into said recess, said suction nose capable of cleaning across a full width and movable vertically along a full length of said recess,
- guide means in said housing forming a straight linear guide path extending generally parallel to a longitudinal dimension of said one of said portions,
- means for displacing said suction device along said straight guide path, said suction device extending along said one of said portions in a direction transverse to the direction of displacement of said suction device along said guide path,
- means for applying suction to said device so that fiber fragments accumulated on said surface of said one of said portions are evacuated therefrom through said suction device and said one of said portions is cleaned in a single movement of said suction device in a straight line, and
- means for selectively applying suction and automatically operating said suction devices individually in succession and in a predetermined sequence during a cleaning cycle.
7 more elements
In a method of operating a filter apparatus which comprises:
- a filter housing;
- a fixed filter collector in said housing formed with a plurality of active filter portions permeable to air and having generally extended surfaces upon which textile fragments collect, each surface having a recess defined by two side walls inclined to one another;
- an inlet on said housing through which air entraining filter fragments is drawn into said housing and an outlet on said housing through which air freed from said fragments is discharged from said housing after passing through said fixed filter collector and depositing said filter fragments on said surfaces;
- and
- pneumatic cleaning means in said housing for separately cleaning said surfaces of said active filter portions, said pneumatic cleaning means including:
- a plurality of suction devices juxtaposed with said surfaces of said portions on a side thereof upon which said fiber fragments collect, said suction devices with adjoining walls forming a suction nose projecting into said recess, said suction nose capable of cleaning across a full width and movable vertically along a full length of said recess.
- guide means in said housing forming a straight linear guide path extending generally parallel to a longitudinal dimension of said one of said portions,
- means for displacing said suction device along said straight guide path, said suction device extending along said one of said portions in a direction transverse to the direction of displacement of said suction device along said guide path,
- means for applying suction to said device so that fiber fragments accumulated on said surface of said one of said portions are evacuated therefrom through said suction device and said one of said portions is cleaned in a single movement of said suction device in a straight line, and
- means for selectively applying suction and automatically operating said suction devices individually in succession and in a predetermined sequence during a cleaning cycle,
- the improvement which comprises:
- automatically operating said suction device to suck fiber fragments from and clean said surfaces individually, in succession and in a predetermined sequence during a cleaning cycle.
9 more elements
Dependencies are inferred from the claim text.