Apparatus and method of particulate removal from liquids
First Claim
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1. Apparatus for separating particulate matter from liquid comprising:
- an elongated housing member;
filter means disposed within said housing member;
an inlet port for introducing the liquid to be filtered into said housing member;
first baffle means extending vertically from a lower end of said housing member upwardly to an upper end of said filter means whereby to direct the flow of liquid from said inlet port upwardly to said upper end of said filter means for downward flow along and through said filter means;
collecting means for collecting particulate matter separated by said filter means;
discharge means for removing filtered liquid from said housing member; and
pressurizing means for introducing gas under pressure into said housing member.
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Abstract
A method and apparatus for particulate removal from liquids is disclosed and includes a Coanda tilted wedge wire screen in combination with a liquid-flow velocity control orifice mounted within a cylindrical air-tight vessel that can be operated under pressure. The liquid flow velocity control orifice and Coanda tilted wedge wire screen in combination with the pressurized system provides for highly efficient and uniform removal of particulate matter that includes a self-cleaning feature.
30 Citations
32 Claims
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1. Apparatus for separating particulate matter from liquid comprising:
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an elongated housing member;
filter means disposed within said housing member;
an inlet port for introducing the liquid to be filtered into said housing member;
first baffle means extending vertically from a lower end of said housing member upwardly to an upper end of said filter means whereby to direct the flow of liquid from said inlet port upwardly to said upper end of said filter means for downward flow along and through said filter means;
collecting means for collecting particulate matter separated by said filter means;
discharge means for removing filtered liquid from said housing member; and
pressurizing means for introducing gas under pressure into said housing member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. Apparatus for separating particulate matter from liquid comprising:
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an elongated housing member;
a Coanda tilted wedge wire screen disposed within said housing member;
an inlet port disposed on said housing member, said inlet port receiving liquid to be transported into said housing member;
an outlet port disposed on said housing member, said outlet port transporting filtered liquid out of said housing member;
said screen including liquid flow control means disposed on an upper portion of said screen whereby to control and direct the flow of liquid on to a surface of said screen;
first baffle means for directing the flow of liquid within said housing member upwardly to said upper portion of said screen and downwardly through said flow control means;
a debris receptacle disposed at a lower end of said screen including second baffle means to partially support said screen and to partition said debris receptacle from an effluent vessel;
purge means for transporting particulates from said debris receptacle. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
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26. A method of filtering liquids wherein an inline liquid conduit is attached to an airtight, pressurized housing member through an inlet port, an outlet port, and a filtration member disposed within said housing member comprising the steps of:
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pressurizing said housing member with air;
directing liquid from said inline conduit to said inlet port;
forcing liquid into said inlet port and upwardly to an upper edge of said filtration member;
controlling the rate of flow and velocity of liquid passing through a liquid flow control means;
directing liquid downwardly under gravity over an upper surface of said filtration member and through said filtration member;
catching filtered liquid in an effluent vessel; and
transporting filtered liquid from said effluent vessel through said outlet port. - View Dependent Claims (27, 28, 29, 30, 31, 32)
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Specification