Method of and apparatus for filtering a medium
AssigneeDongbei Power College
InventorsLiu Fanqing, Li Junwen, Yao Jixian
Life of this patent
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Abstract
The invention relates to a method of and an apparatus for filtering a medium. The apparatus has a filter housing and a supporting means located within the filter housing. A plurality of fiber bundles are attached to the supporting means and extend within the filter housing in direction between an inlet and an outlet. A flexible waterproof membrane is provided within the filter housing to constitute a pressure chamber. When pressurized during the filtration process, the membrane presses the plurality of fiber bundles to form a frustrum-like filter chamber. The medium becomes filtered as it passes through the frustum-like filter chamber.
Claims14
A method for filtering a medium in a filter, wherein the filter comprises a filter housing having an inlet and an outlet, a plurality of fiber bundles located within the filter housing and extending along the length of the filter housing in the direction of the medium flow from the inlet towards the outlet, and at least one flexible waterproof membrane and a pressure chamber formed thereby, comprising:
- (a) pressurizing the pressure chamber to make the flexible waterproof membrane press the plurality of fiber bundles;
- (b) maintaining the pressure in the pressure chamber;
- (c) introducing the medium into the filter through the inlet for filtering, the spaces among the plurality of fiber bundles along the length thereof becoming smaller towards the outlet so as to form a frustum-like filter chamber;
- and
- (d) withdrawing the filtered medium form the filter housing through the outlet.
An apparatus for filtering a medium comprising:
- (a) a filter housing having an inlet and an outlet;
- (b) a supporting means located within the filter housing and close to the outlet;
- (c) a plurality of fiber bundles located within the filter housing and extending along the length of the filter housing in the direction of the medium flow from the inlet towards the outlet, each of the plurality of fiber bundles having a first end and a second end, the first end of each of the plurality of fiber bundles being attached to the supporting means;
- (d) means for preventing the second end of each of the plurality of fiber bundles from getting tangled with each other and from moving in the direction of the medium flow during a filtration process;
- and
- (e) at least one flexible waterproof membrane located within the filter housing and forming a pressure chamber, the pressure chamber having a pressurizing aperture and a release aperture and pressing the plurality of fiber bundles when pressurized during the filtration process.
Dependencies are inferred from the claim text.