Abstract: A device for filtering a stream of water in a channel (2), includes: a wall (6) adapted to be mounted in the channel and including a through-opening, a filter member (10) mounted on the wall opposite the through-opening and including a filter surface projecting relative to the wall, the filter surface having a larger area than would have a flat filter surface fitted in the through-opening, the filter member including retaining members face to face with the filter surface for retaining the bodies that do not pass through the surface, a suction device disposed facing the retaining members, and elements for driving the filter member and/or the suction device in a relative movement of one in relation to the other such that the suction device is successively brought face to face with each retaining member.

Abstract: A device for filtering a stream of water in a channel (2), includes: a wall (6) adapted to be mounted in the channel and including a through-opening, a filter member (10) mounted on the wall opposite the through-opening and including a filter surface projecting relative to the wall, the filter surface having a larger area than would have a flat filter surface fitted in the through-opening, the filter member including retaining members face to face with the filter surface for retaining the bodies that do not pass through the surface, a suction device disposed facing the retaining members, and elements for driving the filter member and/or the suction device in a relative movement of one in relation to the other such that the suction device is successively brought face to face with each retaining member.

Abstract: A device for filtering a stream of water in a channel (2), includes: a wall (6) adapted to be mounted in the channel and including a through-opening, a filter member (10) mounted on the wall opposite the through-opening and including a filter surface projecting relative to the wall, the filter surface having a larger area than would have a flat filter surface fitted in the through-opening, the filter member including retaining members face to face with the filter surface for retaining the bodies that do not pass through the surface, a suction device disposed facing the retaining members, and elements for driving the filter member and/or the suction device in a relative movement of one in relation to the other such that the suction device is successively brought face to face with each retaining member.

Abstract: A screening installation includes, provided in a flume (5) conveying a fluid flowing with a total flow QE: a screening device (10) including a screen which includes at least one filter member in order to screen a fraction Q10 of the total flow, at least one first passage (31) in the flume which is adapted to allow a fraction Q31 of the total flow to pass such that QE=Q10+Q31, so long as the head loss between the upstream side and the downstream side of the screening device is less than a predetermined value, and at least one second passage (32) in the flume which is adapted to allow a fraction Q32 of the total flow to pass such that QE=Q10+Q31+Q32 when the head loss is greater than the predetermined value.

Abstract: A system includes an installation to be cleaned which has at an inlet a fluid feed pipe fed with fluid and at an outlet a fluid evacuation pipe. A cleaning device is arranged to cause cleaning bodies to flow in the installation, the cleaning device including on an inlet filter elements for filtering the fluid and on an evacuation pipe separator elements for collecting the cleaning bodies. The separator and filter elements are static and include separate filters, the separator elements including a filter member, the cleaning device including a circuit for recovering cleaning bodies circulating in the evacuation pipe and a circuit for reinjecting them into the inlet, the two circuits having in common the filter member and being used alternately by actuating a set of controlled valves in order to cause the fluid to flow either in the recovery circuit or in the reinjection circuit.

Abstract: A device for filtering a stream of water in a channel (2), includes: a wall (6) adapted to be mounted in the channel and including a through-opening, a filter member (10) mounted on the wall opposite the through-opening and including a filter surface projecting relative to the wall, the filter surface having a larger area than would have a flat filter surface fitted in the through-opening, the filter member including retaining members face to face with the filter surface for retaining the bodies that do not pass through the surface, a suction device disposed facing the retaining members, and elements for driving the filter member and/or the suction device in a relative movement of one in relation to the other such that the suction device is successively brought face to face with each retaining member.

Abstract: A screening installation includes, provided in a flume (5) conveying a fluid flowing with a total flow QE: a screening device (10) including a screen which includes at least one filter member in order to screen a fraction Q10 of the total flow, at least one first passage (31) in the flume which is adapted to allow a fraction Q31 of the total flow to pass such that QE=Q10+Q31, so long as the head loss between the upstream side and the downstream side of the screening device is less than a predetermined value, and at least one second passage (32) in the flume which is adapted to allow a fraction Q32 of the total flow to pass such that QE=Q10+Q31+Q32 when the head loss is greater than the predetermined value.

Abstract: A system includes: an installation to be cleaned has at the inlet a fluid feed pipe fed with fluid and at the outlet a fluid evacuation pipe, a cleaning device arranged to cause cleaning bodies to flow in the installation, the cleaning device including on the inlet filter elements for filtering the fluid and on the evacuation pipe separator elements for collecting the cleaning bodies, wherein the separator and filter elements are static and include separate filters, the separator elements including a filter member, the cleaning device including a circuit for recovering cleaning bodies circulating in the evacuation pipe and a circuit for reinjecting them into the inlet, the two circuits having in common the filter member and being used alternately by actuating a set of controlled valves in order to cause the fluid to flow either in the recovery circuit or in the reinjection circuit.

Abstract: The water intake rotary screen comprises a mobile filter designed as an endless loop formed of a succession of flexible and articulated filter panels. It is associated with a suction system adapted to generate a local contraflow through the filter to take up successively elements retained thereby and direct them to the exterior.

Abstract: A water intake screen with a filter panel includes a frame adapted to be connected to the water intake and a circular filter panel disposed transversely in an opening of the frame, to which it is fastened. The panel includes a wheel extending in a substantially vertical plane between a lower position and an upper position and having radial retaining members on the upstream side of the panel and attached thereto, an aspiration device on the upstream side of the retaining members, and elements for driving the panel and/or aspiration device with a rotary relative movement so as to generate locally through the panel a successive counterflow at each retaining member in accordance with the rotary relative movement in order to take up successively debris and particles retained thereby and to direct them through an evacuation pipe adapted to evacuate the debris and particles to the exterior.

Abstract: A water intake screen with a filter panel comprises a frame adapted to be connected to said water intake and a circular filter panel disposed transversely in a circular opening of said frame, to which it is fastened. Said circular filter panel comprises a wheel extending in a substantially vertical plane between a lower position and an upper position and comprising radial retaining members on the upstream side of said circular filter panel and attached thereto, an aspiration device on the upstream side of said retaining members, and means for driving said circular panel and/or said aspiration device with a rotary relative movement so as to generate locally through said circular filter panel a successive counterflow at each retaining member in accordance with said rotary relative movement in order to take up successively debris and particles retained thereby and to direct them through an evacuation pipe adapted to evacuate said debris and particles to the exterior.

Abstract: An installation for recovering debris stopped by a filter at the inlet of a heat exchanger: a washing water manifold (36) at the outlet of the filter (11) feeds a separator (37) provided with an outlet pipe (39) for water free of debris to which is connected a hydro-ejector (50) which is connected to the outlet pipe (16) of the exchanger (19).

Abstract: A control installation for solid cleaning members circulating in a heat exchanger includes interception arrangements interposed on the heat exchanger outlet pipe, a return pipe which recycles toward the inlet pipe a return flow containing the solid cleaning members, and a control device for the solid cleaning members. Between the interception arrangements and the control device there is a concentration device dividing the return flow into two parts. The return pipe is part of circulation arrangements which generate a counter-current flow through the interception arrangements and which include suction arrangements in line with the interception device to take up the solid cleaning members retained thereby.