A filter device having a filter housing (1) with a fluid inlet (13) for raw fluid and with a fluid outlet (3) for filtrate and with at least one one-piece or multi-piece filter insert (5, 7) which is received in the filter housing (1) and can be cleaned using at least one backflushing member (21) in counter-current to the filtration direction, which member can, by means of a fluid-guiding driveshaft (23) of a rotary drive (35), be moved along the inner side (19) of the respective filter insert (5, 7) and has, at its end adjacent to this inner side (19), a gap-shaped passage opening (39) that runs parallel to the axis of rotation of the driveshaft (23) and discharges into a flow space (41; 57; 67) fluidically connected to the driveshaft (23), which space at least partially continuously narrows in the direction of the driveshaft (23) in a first plane in which the passage opening (39) lies, is characterized in that, in another second plane transverse to the first plane, the flow space (41; 57; 67) at least partially continuously widens proceeding from the passage opening (39) in the direction of the driveshaft (23).

A filter device having a filter housing (1) with a fluid inlet (13) for raw fluid and with a fluid outlet (3) for filtrate and with at least one one-piece or multi-piece filter insert (5, 7) which is received in the filter housing (1) and can be cleaned using at least one backflushing member (21) in counter-current to the filtration direction, which member can, by means of a fluid-guiding driveshaft (23) of a rotary drive (35), be moved along the inner side (19) of the respective filter insert (5, 7) and has, at its end adjacent to this inner side (19), a gap-shaped passage opening (39) that runs parallel to the axis of rotation of the driveshaft (23) and discharges into a flow space (41; 57; 67) fluidically connected to the driveshaft (23), which space at least partially continuously narrows in the direction of the driveshaft (23) in a first plane in which the passage opening (39) lies, is characterized in that, in another second plane transverse to the first plane, the flow space (41; 57; 67) at least partially continuously widens proceeding from the passage opening (39) in the direction of the driveshaft (23).

When a lid covers an opening portion formed at an upper end of a filter case with a bottomed substantially cylindrical shape inside which a filter element is disposed, the internal space between the lid and the filter case is formed. A bypass flow path connecting the internal space and outside space is formed in the lid, and a relief valve disposed moveably between a position closing the bypass flow path and a position opening the bypass flow path includes an air bleeder formed from a porous material.

A fluid transport assembly includes a substantially cylindrical shell having a first closed end and a second closed end and a tube extending from the first closed end to the second closed end. The tube is substantially aligned with an axis of the shell and provides a passage through the shell. The fluid transport assembly also includes a series of concentric cylindrical filters positioned in the cylindrical shell and extending from the first closed end to the second closed end. The series of concentric cylindrical filters defines an input compartment between the filters and the tube and an output compartment between the filters and the cylindrical shell. The series of concentric filters is structured to remove contaminants from a fluid as the fluid flows through the series of concentric filters from the input compartment to the output compartment.

An end material recovery apparatus includes a plurality of cages each in which an upper portion is opened, the plurality of cages each having at least one surface formed of at least one of a mesh-like surface and a porous surface, the plurality of cages being configured to receive a mixed liquid in which an end material is mixed with a liquid from the upper portion, collect at least a part of the end material in the mixed liquid, and discharge the liquid from the at least one surface; a rotation drive mechanism configured to individually rotate the plurality of cages in a direction in which the upper portion faces downward; and a plurality of recovery containers configured to recover the end material dropped by individually rotating the plurality of cages in the direction in which the upper portion faces downward.

An end material recovery apparatus includes a plurality of cages each in which an upper portion is opened, the plurality of cages each having at least one surface formed of at least one of a mesh-like surface and a porous surface, the plurality of cages being configured to receive a mixed liquid in which an end material is mixed with a liquid from the upper portion, collect at least a part of the end material in the mixed liquid, and discharge the liquid from the at least one surface; a rotation drive mechanism configured to individually rotate the plurality of cages in a direction in which the upper portion faces downward; and a plurality of recovery containers configured to recover the end material dropped by individually rotating the plurality of cages in the direction in which the upper portion faces downward.

The present disclosure relates to a separation device to separate contaminants from contaminated water. It comprises a container to receive the contaminated water. The container further comprises a contaminated water inlet, a filter, a presser for compressing and/or dewatering contaminants separated from the contaminated water, and a contaminant outlet. The container further comprises a gas inlet for generating gas bubbles into the contaminated water to further separate contaminants from the contaminated water. The present disclosure relates to a use of such a separation device and a method of separating contaminants from contaminated water.

The present disclosure relates to a separation device to separate contaminants from contaminated water. It comprises a container to receive the contaminated water. The container further comprises a contaminated water inlet, a filter, a presser for compressing and/or dewatering contaminants separated from the contaminated water, and a contaminant outlet. The container further comprises a gas inlet for generating gas bubbles into the contaminated water to further separate contaminants from the contaminated water. The present disclosure relates to a use of such a separation device and a method of separating contaminants from contaminated water.

Certain embodiments include a screen assembly of a vessel, where the screen assembly includes a plurality of fixed elements and a retainer, and the retainer includes a ring, a plurality of wedges disposed about the ring, and a plurality of keyholes at spaced locations about the ring. Each keyhole includes a bore and a slot extending from the bore into an adjacent wedge of the plurality of wedges, the slots have a width less than the bores, and the retainer may receive the fixed elements through the bores and may be rotated in a relation with the plurality of fixed elements to bring the plurality of fixed elements into simultaneous engagement with the wedges.

Certain embodiments include a screen assembly of a vessel, where the screen assembly includes a plurality of fixed elements and a retainer, and the retainer includes a ring, a plurality of wedges disposed about the ring, and a plurality of keyholes at spaced locations about the ring. Each keyhole includes a bore and a slot extending from the bore into an adjacent wedge of the plurality of wedges, the slots have a width less than the bores, and the retainer may receive the fixed elements through the bores and may be rotated in a relation with the plurality of fixed elements to bring the plurality of fixed elements into simultaneous engagement with the wedges.