Backwashable liquid filter system using rotating spray
AssigneeBenian Filter Company, Inc.
InventorRobert Benian
Life of this patent
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Abstract
A liquid-cleaning filtering system has at least one permanent filter assembly that is capable of being promptly backwashed thus minimizing the down time of machinery. Each filter assembly utilizes a wire mesh filter cartridge which is backwashed by a powered internal rotating sprayer nozzle assembly that is operable to deliver a plurality of high pressure streams of liquid to a surface of the wire mesh. Each filter assembly is capable of being repeatedly used and then backwashed in order to return it to a pristine state. The rotating spray nozzle assembly may be powered by hydraulics, pneumatics or an electric motor. A plurality of filter assemblies may be arranged together in a fluid processing center in order to process large volumes of industrial waste.
Claims19
A fluid filter assembly comprising:
- a head section having a central passageway and an outlet port;
- a drive member connected to the head section;
- a filter cover connected to the head section;
- an elongated filter housing connected to the filter cover;
- an elongated filter cartridge located within the filter housing, the cartridge including an inner surface and an outer surface for collecting particles thereon;
- and
- an axially extending fluid delivery member fixed at one end to the drive member, the fluid delivery member extending through the head section and into the filter housing,
- whereby the fluid delivery member rotates at a velocity in proportion to the velocity of the drive member.
A backwashable filter cleaning system for a liquid operated device, the filter system comprising:
- a motor connected to a pump for producing a supply of pressurized liquid to a spray nozzle assembly;
- a filter housing being operable to be backwashed;
- a drive means that is connected to a spray nozzle assembly;
- an elongated spray nozzle assembly extending within the housing and operable to receive the pressurized liquid;
- and
- a permanent filter extending within the housing and operable to receive the spray nozzle assembly.
The filter cleaning assembly as claimed in 16, wherein the spray nozzle assembly includes a nozzle shaft that is secured at its upper end to the reversible drive means, and at its other end, the nozzle shaft is supported by a self-centering member, the spray nozzle assembly further includes a plurality of spray nozzles that are selectively positioned to cause the permanent filter to be cleansed to a pristine state.
Dependencies are inferred from the claim text.