A sieve bend can include a support structure supporting a screening arrangement. The screening arrangement can include a first screening segment having a first screening element configuration and at least one further screening segment having a second screening element configuration different from the first screening element configuration.

A swimming pool skimmer comprises a buoyant skimmer body. The swimming pool skimmer further comprises an electrical power supply including a solar cell mounted to a topside of the skimmer body. A set of proximity sensors are operatively connected to the electrical power supply, and are mounted at a forward end of the skimmer body. The set of proximity sensors are configured to generate a signal in response to detecting an obstruction. A set of pump jets are operatively connected to both the electrical power supply and the set of proximity sensors. The set of pump jets are configured to activate in response to the signal from the set of proximity sensors, thereby rotating the swimming pool skimmer away from the obstruction.

The present invention provides a multi plate screw press sludge dewatering machine and a helical shaft thereof. The multi plate screw press sludge dewatering machine includes fixed rings, movable rings, the helical shaft, a sludge inlet tank and a sludge discharging tank; the helical shaft adopts a variable diameter variable pitch helical shaft, a lead angle arrangement sequence of a helical blade of the whole helical shaft is gradual reduction from the sludge discharging tank to the sludge inlet tank, and the lead angle arrangement sequence is gradually reduced from 16-22 to 6-14; a pitch of the helical shaft is gradually increased along a direction from the sludge inlet tank to the sludge discharging tank; a diameter of a shaft body of the helical shaft is gradually increased along with a direction of the sludge discharging tank from a position of a shaft length; and blockage prevention plates are arranged on two sides of the bottom of the helical blade. The helical shaft in the present invention is specially designed, so that the pitch is more reasonable, a helical angle is gentler, frictional resistance when sludge passes through the helical shaft may be effectively reduced, and phenomena of shaft blockage and shaft sticking of the sludge may be reduced.

The invention concerns a system for intercepting and collecting bodies in a flow of a fluid, comprising: a pipe portion (18) comprising an inner face that defines an axial inner passage for the flow, a filtering surface (25) including an upstream face (25a) and extending transversely in the passage so as to intercept, by its upstream face, bodies conveyed by the flow whilst leaving exposed a plurality of collection openings (26a, 26b) between the filtering surface and the inner face, a cleaning device (30) that is arranged across from the upstream face (25a), the device (30) and the filtering surface (25) being in motion with respect to one another such that each zone of the upstream face is mechanically swept by the device during each alternating relative back and forth movement in order to orient the bodies intercepted by the upstream face (25a) toward the collection openings for said bodies.

A rotary tool for a mechanical separator, the tool can optionally comprise: a center shaft having a longitudinal axis; a plurality of longitudinal paddles coupled to the shaft, at least one paddle of the plurality of paddles having an inner edge and aligned radially relative to the longitudinal axis, wherein the at least one paddle has an elongate extent along the longitudinal axis with opposing lateral sides along the elongate extent; and a flange having a triangular shape in a radial cross-section, the flange affixed to the inner edge of the at least one paddle and having an apex radially inward of the at least one paddle. Other examples of the application include the rotary tool having a plurality of tools and the mechanical separator having the capability of being raised or lowered to alter a residence time of slurry within the mechanical separator.

A strip-shaped filter in the shape of a circular arc is arranged at a port opening portion of an oil passage, the port opening portion being in maximum proximity to a spool hole portion or a valve element, to prevent a contaminant in the oil passage from reaching the spool hole portion or the valve element. A groove portion is arranged to extend in a circumferential direction in a wall surface of the upper body which defines the spool hole portion. The port opening portion is defined in the groove portion, and is connected to the oil passage. The filter is housed in the groove portion to close the port opening portion defined in the groove portion.

The present disclosure is an algae separating device configured to separate algae from an algal solution in which algae are suspended. The algae separating device includes: a metal screen having a main body and a plurality of through holes passing through the main body from a front face to a back face; and a spraying device configured to spray the algal solution toward the front face of the main body.

A saliva pre-processing device is provided. The saliva pre-processing device comprises: a first filter module for filtering out impurities in saliva such that the impurities in the saliva remain on a filter; and a second filter module which receives the saliva from which the impurities are filtered out from the first filter module, and concentrates a target material in the saliva such that the target material in the saliva remains on a filter, wherein the first and second filter modules may have a porous structure.

A target generation device may include a filter structure, a flange, a tank unit, and a nozzle section. The flange may accommodate the filter structure and contain a flow path passing through the filter structure. The tank unit may contain a space in communication with the flow path in the flange and store a predetermined target material. The nozzle section may be provided to the flange and in communication with the space in the tank unit through the flow path in the flange. The filter structure according to one embodiment of the present disclosure may include a filter of a porous material and a socket integrally formed with the filter.

The invention relates to an apparatus for separating blood and at the same time an apparatus (1) for absorbing blood (19) and separating components such as blood plasma, as a sample liquid (2), having a feed device (13) for receiving the blood (2), a separating device (15) for separating blood components as the sample liquid (2), a channel (3) which takes up the sample liquid (2) preferably exclusively by capillary forces and a fill device for filling the channel (3) with sample liquid (2) in an inlet or feed region (18) of the channel (3), wherein the separating device (15), particularly a membrane, is domed, more particularly convexly shaped and projects with the apex of the convex shape into the filling device in the direction of filling.