A self-cleaning, automated apparatus with a filter for fluids includes a nozzle unit assembly that has two nozzle tubes, one inside of another. Each of the tubes has a respective pattern of one or more slots or holes. As the tubes rotate, one with respect to the other, part of the pattern of the one coincides at times with part of the pattern of the other, resulting in a jet of fluid directed toward a filter to remove debris from the filter. The filter is rotated so the jet can reach all parts to be cleaned. The respective patterns of the two nozzle tubes may be an approximation of a helix and/or an approximation of a line.

The present disclosure relates to a system and process for separating sand and gravel in sediments of a sewage pipe network and recycling organic matters. The system includes a conveying grid plate, a mud outlet is provided below the conveying grid plate, and a masonry conveying area is provided at one side of the conveying grid plate; a fiber crushing tank, disposed below the mud outlet, and a crushing device is disposed below the mud outlet; a masonry scouring and recycling tank, provided with an interception grille located at one side of the masonry conveying area, a flushing device is disposed above the interception grille, a masonry outlet is provided in the masonry scouring and recycling tank, the masonry scouring and recycling tank is communicated with a muddy water return pipe, and the muddy water return pipe is communicated with the mud outlet.

A food processing apparatus includes a pressure vessel defining a compartment having an inlet end for receiving food product and an outlet end for discharging food product, an open-top screen mounted within the compartment and movable relative to the compartment between a first position, for food processing, and a second position, to facilitate cleaning, a rotatable auger mounted such that at least a portion of the auger is within the screen, the auger being operable to advance food product within the compartment from the inlet end of the pressure vessel toward the outlet end, and a transfer mechanism including a conduit in communication with the compartment, a fluid discharge positioned substantially within the conduit, and a pressurized fluid source in communication with the fluid discharge and operable to propel a fluid through the fluid discharge to move food product through the conduit.

A food processing apparatus includes a pressure vessel defining a compartment having an inlet end for receiving food product and an outlet end for discharging food product, an open-top screen mounted within the compartment and movable relative to the compartment between a first position, for food processing, and a second position, to facilitate cleaning, a rotatable auger mounted such that at least a portion of the auger is within the screen, the auger being operable to advance food product within the compartment from the inlet end of the pressure vessel toward the outlet end, and a transfer mechanism including a conduit in communication with the compartment, a fluid discharge positioned substantially within the conduit, and a pressurized fluid source in communication with the fluid discharge and operable to propel a fluid through the fluid discharge to move food product through the conduit.

The present disclosure relates to the technical field of food equipment design and processing, and provides a high-efficiency water-saving separation screen for starch slurry and residue which includes a horizontal screen drum, a screen mesh, a screw propelling extrusion rod, a rotation drive unit and a flushing spray pipe; one side of the horizontal screen drum is provided with a feeding inlet, and the other side of the horizontal screen drum is provided with a slurry outlet and a residue outlet; the screen mesh is in a cone shape, and the cross-sectional diameter of the screen mesh gradually decreases from the feeding inlet to the residue outlet; the screw propelling extrusion rod is arranged in the screen mesh and includes a screw propelling extrusion rod shaft and a screw blade; the rotation drive unit drives the screen mesh and the screw propelling extrusion rod to rotate in opposite directions; and the flushing spray pipe is used for flushing slurry and residue on the screen drum. The present disclosure further provides a separation method adopting the aforementioned separation screen. The synergistic effects of mechanical disturbance and hydraulic overflow washing and screening are simultaneously exerted by the screen, compared with traditional curved surface screens and high-speed centrifugal screens, the usage amount of clean water and the generation amount of wastewater can be reduced, and the concentration of obtained starch slurry is increased; and the moisture content of potato residue extruded and separated out by the screen is low, and thus subsequent utilization is facilitated.

The present disclosure relates to the technical field of food equipment design and processing, and provides a high-efficiency water-saving separation screen for starch slurry and residue which includes a horizontal screen drum, a screen mesh, a screw propelling extrusion rod, a rotation drive unit and a flushing spray pipe; one side of the horizontal screen drum is provided with a feeding inlet, and the other side of the horizontal screen drum is provided with a slurry outlet and a residue outlet; the screen mesh is in a cone shape, and the cross-sectional diameter of the screen mesh gradually decreases from the feeding inlet to the residue outlet; the screw propelling extrusion rod is arranged in the screen mesh and includes a screw propelling extrusion rod shaft and a screw blade; the rotation drive unit drives the screen mesh and the screw propelling extrusion rod to rotate in opposite directions; and the flushing spray pipe is used for flushing slurry and residue on the screen drum. The present disclosure further provides a separation method adopting the aforementioned separation screen. The synergistic effects of mechanical disturbance and hydraulic overflow washing and screening are simultaneously exerted by the screen, compared with traditional curved surface screens and high-speed centrifugal screens, the usage amount of clean water and the generation amount of wastewater can be reduced, and the concentration of obtained starch slurry is increased; and the moisture content of potato residue extruded and separated out by the screen is low, and thus subsequent utilization is facilitated.

A male population of mosquito pupae sorted according to a sorting method is described. The sorting method may include adding a mixed population of mosquito pupae into an interior volume of a sieving container including base defining a set of openings enabling movement of mosquito pupae from the interior volume through the set of openings. The mixed population of mosquito pupae may include male mosquito pupae and female mosquito pupae. The method may also include adding a volume of aqueous solution to the interior volume. The method may also include removing a portion of the male pupae from the mixed population of mosquito pupae to by performing a sieving action that causes the portion of the male pupae and a portion of the volume of water to pass from the interior volume through the set of openings. The method may also include capturing the portion of the male pupae as the male population of mosquito pupae after the portion of the male pupae has passed through the set of openings.

A male population of mosquito pupae sorted according to a sorting method is described. The sorting method may include adding a mixed population of mosquito pupae into an interior volume of a sieving container including base defining a set of openings enabling movement of mosquito pupae from the interior volume through the set of openings. The mixed population of mosquito pupae may include male mosquito pupae and female mosquito pupae. The method may also include adding a volume of aqueous solution to the interior volume. The method may also include removing a portion of the male pupae from the mixed population of mosquito pupae to by performing a sieving action that causes the portion of the male pupae and a portion of the volume of water to pass from the interior volume through the set of openings. The method may also include capturing the portion of the male pupae as the male population of mosquito pupae after the portion of the male pupae has passed through the set of openings.

An apparatus may include: a shaker body; a shaker screen disposed within the shaker body; and one or more air nozzles disposed within the shaker body, wherein the one or more air nozzles is positioned below the shaker screen, and wherein the one or more air nozzles is operable to deliver a pressurized stream of air to at least a portion of a bottom of the shaker screen.

An apparatus may include: a shaker body; a shaker screen disposed within the shaker body; and one or more air nozzles disposed within the shaker body, wherein the one or more air nozzles is positioned below the shaker screen, and wherein the one or more air nozzles is operable to deliver a pressurized stream of air to at least a portion of a bottom of the shaker screen.