Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material.

Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material.

A method may include etching a number of holes into a carrier wafer layer to form a plurality of filters in the carrier wafer layer, patterning a chamber layer over a first side of the carrier wafer layer to form chambers above each filter formed in the carrier wafer layer, forming a layer over the chamber layer, grinding a second side of the carrier wafer layer to expose the number of holes etched into the carrier wafer layer, and bonding a molded substrate to the carrier wafer layer opposite the chamber layer.

A method may include etching a number of holes into a carrier wafer layer to form a plurality of filters in the carrier wafer layer, patterning a chamber layer over a first side of the carrier wafer layer to form chambers above each filter formed in the carrier wafer layer, forming a layer over the chamber layer, grinding a second side of the carrier wafer layer to expose the number of holes etched into the carrier wafer layer, and bonding a molded substrate to the carrier wafer layer opposite the chamber layer.

Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material.

A water surface garbage salvaging device, comprising a demihull, a large garbage salvaging device and a small garbage cleaning device; wherein the large garbage salvaging device is arranged on a front portion of the demihull, and the small garbage cleaning device is arranged on a rear portion thereof; the large garbage salvaging device comprises a paddle wheel, slipways and a large garbage storage bin; and the small garbage cleaning device comprises a filter mesh, a guide rail slider mechanism, a lifting mechanism and a pulley system, a hanging bracket is arranged above the filter mesh.

A pump system includes a submersible pump and a filter. The pump has a housing, an intake, and a discharge. The filter includes a filter housing that releasably engages the pump and that overlies the intake of the pump. The filter housing has an intake, an outlet located between the intake of the filter housing and the intake of the pump. A filter chamber is located upstream of the outlet of the filter housing and is configured to receive filter media. The outlet of the filter housing is disposed inline with the intake of the pump. The coupling may comprise a latch that clips or snaps onto part of the pump, releasably attaching the filter housing to the pump. The latch may engage with opposite sides of the pump when releasably attaching the filter housing to the pump. The latch may include a plurality of spaced apart snaps that snap onto the pump.

A pump system includes a submersible pump and a filter. The pump has a housing, an intake, and a discharge. The filter includes a filter housing that releasably engages the pump and that overlies the intake of the pump. The filter housing has an intake, an outlet located between the intake of the filter housing and the intake of the pump. A filter chamber is located upstream of the outlet of the filter housing and is configured to receive filter media. The outlet of the filter housing is disposed inline with the intake of the pump. The coupling may comprise a latch that clips or snaps onto part of the pump, releasably attaching the filter housing to the pump. The latch may engage with opposite sides of the pump when releasably attaching the filter housing to the pump. The latch may include a plurality of spaced apart snaps that snap onto the pump.

The present invention relates to a suction filter unit (1) for filtering liquids. The filter unit (1) comprises: a housing element (3) with an open first side and an open opposing, second side, the housing element (3) comprising a first set of filter element supporting elements (23); a first cover (5) sealingly connected to the first side of the housing element (3); a second, different cover (7) sealingly connected to the second side of the housing element (3), the second cover (7) comprising a second set of filter element supporting elements (25); a filter unit inlet (9); a filter unit outlet; a first filter element (13) for providing a fine filtering property of the liquid; and a second filter element (21) arranged between the first filter element (13) and the inlet (9) for providing a coarse filtering property of the liquid. The second filter element (21) is clamped between the second cover and the housing element (3) by the first and second set of filter element supporting elements (23, 25).

In one example, a filtering device has a housing that defines an inlet opening, first and second bores with first and second pistons therein, respectively, first and second inlet channels that extend from the inlet opening to the first and second bores, respectively first and second outlet channels in communication with the first and second bores, respectively, and a first backflush channel. The first piston defines a filter cavity in fluid communication with the first inlet and outlet channels when the first piston is in a production mode. The second piston defines a filter cavity in fluid communication with the second inlet and outlet channels when the second piston is in the production mode. The device has a backflush valve that compresses fluid into the filter cavity of the first piston via the first backflush channel to increase pressure in the cavity during a backflushing operation.