Embodiments of the present disclosure include a screen basket apparatus includes a substantially vertical cylindrical frame and a synthetic screening surface secured to the frame. The synthetic screening surface may be configured to separate carbon or resin from a slurry of a carbon-in-leach, carbon-in-pulp, resin-in-leach, or resin-in-pulp material as fluid flows from outside to inside the screen basket apparatus such that carbon or resin is retained on an external surface of the synthetic screening surface. The cylindrical frame may be a grid frame and the synthetic screening surface may include a plurality of replaceable screen assemblies attached to the grid frame. The grid frame may include a plurality of openings and each of the plurality of openings is configured to receive a respective one of the plurality of replaceable screen assemblies. The synthetic screening surface may include injected molded thermoplastics, thermoset polyurethanes, and/or other polymeric materials.

An automatic flushing device for a screen filter of a biogas slurry drip irrigation system and a use thereof are provided. The automatic flushing device includes a feeding mechanism, a filter unit, a discharging mechanism and a control mechanism, where the filter unit is provided with a feeding end fixedly threaded to a discharging end of the feeding mechanism and a discharging end fixedly threaded to a feeding end of the discharging mechanism; and the control mechanism is clamped on a pipe of the feeding mechanism. The automatic flushing device enhances the cleaning strength and uniformity of ultrasonic waves to the filter screen. The ultrasonic vibration rod is nested inside the upper filter casing through the externally-threaded hollow cap and a threaded top portion of the upper filter casing, which greatly facilitates the cleaning, replacement and maintenance of the ultrasonic vibration rod.

The invention relates to a pneumatic-hydraulic back-flushing method according to claim 1 and a device for back-flushing fluid filters using an integrated hydro-dynamic cleaning process with a filter element (5) arranged in a housing (1) about a support body (9), wherein the housing (1) is designed in such a manner that a fluid inlet (7) and, preferably on the housing lid (2), a fluid outlet (7) are arranged in such a manner that the fluid flow flows through the filter element (5) from the outside to the inside in the filtering process, such that the support body (9) is closed on both sides and a supply io pipe (3) is arranged in the interior of the support body (9) in such a manner that said support body projects from the housing lid (2) into the interior of the fluid filter and is open at the bottom, and said supply pipe (3) is arranged in a fluid guide pipe (4), wherein the fluid guide pipe (4) is closed by a base (6) and a compressed air connection (10) is preferably arranged in the housing lid (2) and the fluid flow in the filter process (16) adopts the direction of flow illustrated (16), wherein the fluid is guided through the filter element (5) and the support body (9) into the fluid guide pipe (4), which is open at the top and closed at the bottom, and is guided into the supply pipe (3), which is open at the bottom, in such a manner that said fluid flows to the fluid outlet (8), and for the cleaning process the fluid inlet (7), the fluid outlet (8) and the zo compressed air inlet (10) are operated by control elements such that the fluid adopts the direction of flow (17).

The invention relates to a pneumatic-hydraulic back-flushing method according to claim 1 and a device for back-flushing fluid filters using an integrated hydro-dynamic cleaning process with a filter element (5) arranged in a housing (1) about a support body (9), wherein the housing (1) is designed in such a manner that a fluid inlet (7) and, preferably on the housing lid (2), a fluid outlet (7) are arranged in such a manner that the fluid flow flows through the filter element (5) from the outside to the inside in the filtering process, such that the support body (9) is closed on both sides and a supply io pipe (3) is arranged in the interior of the support body (9) in such a manner that said support body projects from the housing lid (2) into the interior of the fluid filter and is open at the bottom, and said supply pipe (3) is arranged in a fluid guide pipe (4), wherein the fluid guide pipe (4) is closed by a base (6) and a compressed air connection (10) is preferably arranged in the housing lid (2) and the fluid flow in the filter process (16) adopts the direction of flow illustrated (16), wherein the fluid is guided through the filter element (5) and the support body (9) into the fluid guide pipe (4), which is open at the top and closed at the bottom, and is guided into the supply pipe (3), which is open at the bottom, in such a manner that said fluid flows to the fluid outlet (8), and for the cleaning process the fluid inlet (7), the fluid outlet (8) and the zo compressed air inlet (10) are operated by control elements such that the fluid adopts the direction of flow (17).

A septic tank filter system includes a tank. The tank includes an inlet and an outlet, wherein the outlet is disposed on the tank below the inlet to enable a flow of wastewater to be gravity fed from the inlet to the outlet. A filter is positioned in the tank. The filter includes a frame. A filter media is disposed on the frame. The filter media is operable to filter the wastewater of waste material as the wastewater passes therethrough. A top opening is disposed on a top portion of the frame. A bottom of the top opening is located above the tank outlet and below the tank inlet. When the filter media is not clogged, a level of the wastewater remains below the top opening. When the filter media is clogged, the level of the wastewater rises until the wastewater flows over the top opening.

In one or more embodiments, a liquid filter 100 to filter fuel or lubricant is provided. The liquid filter 100 includes a housing 102 extending along the vertical axis XX′. The housing 102 has a cylindrical shape and includes a top end cap 104 and a bottom end cap 106 provided at both ends. The top end cap 104 and the bottom end cap 106 are integratedly formed in one piece with the housing 102. The top end cap 104 includes an outlet 108 for allowing outflow of filtered liquid from the housing 102. A hand priming pump 110 is functionally attached to the outlet 108 of the top end cap 104 for easing priming. The bottom end cap 106 includes an inlet 112 for allowing inflow of dirty liquid inside the housing 102.

In one or more embodiments, a liquid filter 100 to filter fuel or lubricant is provided. The liquid filter 100 includes a housing 102 extending along the vertical axis XX′. The housing 102 has a cylindrical shape and includes a top end cap 104 and a bottom end cap 106 provided at both ends. The top end cap 104 and the bottom end cap 106 are integratedly formed in one piece with the housing 102. The top end cap 104 includes an outlet 108 for allowing outflow of filtered liquid from the housing 102. A hand priming pump 110 is functionally attached to the outlet 108 of the top end cap 104 for easing priming. The bottom end cap 106 includes an inlet 112 for allowing inflow of dirty liquid inside the housing 102.

Oil filtration unit for removal of contaminants from oil including a housing with an inlet to receive contaminated oil from surroundings and release oil to an inner opening at a first pressure, an outlet adapted to release filtered oil to surroundings, and an oil filter for filtering oil in the inner opening of the housing. The oil filter includes an inlet with an outer surface, an inner volume to receive filtered oil at a second pressure lower than the first pressure, and an outlet inside the housing providing fluid/liquid communication between the inner volume and the housing outlet. The filter outlet includes a hydraulic resistance providing a fluid/liquid flow restriction between the inner volume and the housing outlet to increase the second pressure inside the inner filter volume and release the oil from the inner filter volume to the housing outlet at a third pressure lower than the second pressure.

Oil filtration unit for removal of contaminants from oil including a housing with an inlet to receive contaminated oil from surroundings and release oil to an inner opening at a first pressure, an outlet adapted to release filtered oil to surroundings, and an oil filter for filtering oil in the inner opening of the housing. The oil filter includes an inlet with an outer surface, an inner volume to receive filtered oil at a second pressure lower than the first pressure, and an outlet inside the housing providing fluid/liquid communication between the inner volume and the housing outlet. The filter outlet includes a hydraulic resistance providing a fluid/liquid flow restriction between the inner volume and the housing outlet to increase the second pressure inside the inner filter volume and release the oil from the inner filter volume to the housing outlet at a third pressure lower than the second pressure.

A filtration assembly includes a housing. The housing includes a first housing for fluid and a second housing opening for fluid. A containment cover is removably coupled to the housing. The containment cover defines a cover opening, a cover surface, and a flow passage. The cover opening is in fluid communication with the housing. The cover surface is substantially continuous around a circumference of the containment cover. The cover surface includes an open portion in fluid communication with the second housing opening. The flow passage is formed by a first passage surface and a second passage surface. The flow passage includes a first end in fluid communication with the cover opening. A second end is in fluid communication with the second housing opening through the open portion of the cover surface. The flow passage extends radially outward from the cover opening.