The present invention provides a fine particle separating apparatus comprising: a first filter part having a first mesh part, mounted therein, for separating fine particles included in sludge according to size, and having a first section and a second section with the first mesh part therebetween; a first flow path mounted in the first section so as to allow the sludge to flow into the first filter part; a second flow path mounted in the second section so as to allow an effluent, having passed through the first filter part, to flow therein; a third flow path connected from the second flow path so as to discharge the effluent to the outside; a fourth flow path connected from one side of the second flow path, and mounted in the second section so as to allow at least a portion of the effluent flowing into the second flow path to flow to the first filter part; a fifth flow path mounted in the first section so as to allow the effluent, discharged by means of the fourth flow path, to pass through the first filter part and then flow therein; a storage tank through which the effluent flowing into the fifth flow path is discharged; and a first pump for generating a flow of the effluent, wherein the first mesh part is rotatably mounted in the first filter part.

A fine particle separating apparatus includes a first filter having a first mesh, the first filter having a first section and a second section with the first mesh therebetween and rotatably mounted in the first filter part. A first flow path allows sludge to flow into the first filter, a second flow path allows an effluent from the first filter party to flow therein, and a third flow path is provided to discharge the effluent from the second flow path to the outside. At least a portion of the effluent flowing into the second flow path is provided to the first filter part in a fluid loop along a fourth flow path, and a fifth flow path is defined in the first section to allow the effluent from the fourth flow path to pass through the first filter part. A storage tank and a pump are also provided.

A filtration device efficiently sizes removal of unnecessary substances adhering to and deposited on a filter medium of a filter element during filtration and backwashing (cleaning) from target (non-filtered) substances. The filter element captures substances in a fluid on one surface of a filter medium. The captured substances are separated from the filter medium during backwashing. A brush moves relative to the one surface of the filter medium and assists in separating the captured substances and sifting during the relative movement. The backwashing starts when a differential pressure between both surfaces of the filter medium exceeds a predetermined value, or the like while performing the filtration, and returns to filtration after the differential pressure is eliminated or after a predetermined time elapses. The brush sifts the unnecessary substances from the captured substances and passes the removal to the other surface side during the filtration.

A filter unit, or more specifically, a filter box for a chip conveyor for conveying cutting chips that are produced in the operation of a machine tool, such as a lathe or the like. More specifically, the exemplary filter unit has at least one internally located brush that is used for removing different types of chips contained in a coolant fluid and/or cutting oil used in machine tools during metal working through mechanical brushing and jolting the surface of the filtration element(s) of the filter unit. A chip conveyor and a method of filtering cutting fluid in a filtering chip conveyor is also disclosed.

A pool cleaner that may include a drive mechanism for moving the pool cleaner; a housing that has a first fluid opening and a second fluid opening; a filtering unit that comprises a filter enclosure, a cleaning element and a filtering element; and a rotating mechanism that is configured to introduce a relative rotation between the cleaning element and the filtering element thereby causing the cleaning element to clean the filtering element.

A dishwasher includes a tub with an access opening to a treating chamber, a sump, at least one sprayer emitting liquid into the treating chamber, a pump, a conduit fluidly coupling the sump to the pump and the pump to the at least one sprayer, thereby defining a recirculation circuit through which the liquid sprayed into the treating chamber collects in the sump and is pumped back to the at least one sprayer. The dishwasher also includes a filter assembly in the sump for filtering the liquid in the recirculation circuit including a cleaning element.

A filtration device efficiently sizes removal of unnecessary substances adhering to and deposited on a filter medium of a filter element during filtration and backwashing (cleaning) from target (non-filtered) substances. The filter element captures substances in a fluid on one surface of a filter medium. The captured substances are separated from the filter medium during backwashing. A brush moves relative to the one surface of the filter medium and assists in separating the captured substances and sifting during the relative movement. The backwashing starts when a differential pressure between both surfaces of the filter medium exceeds a predetermined value, or the like while performing the filtration, and returns to filtration after the differential pressure is eliminated or after a predetermined time elapses. The brush sifts the unnecessary substances from the captured substances and passes the removal to the other surface side during the filtration.

The present discloses a waste screening apparatus comprising: a main body; a waste screener vertically and tiltedly disposed in the main body to screen wastes in the input water and to allow waste-removed water to be discharged through water discharge holes defined in both side faces of the main body respectively, wherein the waste screener vertically circulates in a conveyor manner, wherein the input water is input to a front, rear and bottom of the waste screener; wherein the main body includes: both side walls having the water discharge holes defined therein respectively to allow waste-removed water to be discharged out from the waste screener therethrough; and a rear blocking wall disposed at a rear of the waste screener to be spaced from the waste screener, wherein the input water passes through front and rear portions of the waste screener with wastes being removed from the input water, and, then, is discharged out through the water discharge holes defined in the both side walls respectively.

A pool cleaner that may include a drive mechanism for moving the pool cleaner; a housing that has a first fluid opening and a second fluid opening; a filtering unit that comprises a filter enclosure and a filtering element; a fluid flow mechanism for inducing a flow of fluid through the filtering element in a first direction during a filtering process and for inducing a flow of the fluid through the filtering element at a substantially opposite direction during a backwash process; and a debris trap that is configured to receive debris from the filtering element during the backwash process and to substantially prevent the debris from exiting the debris trap during the filtering process.

The invention relates to a conveyor belt filter device for mechanically cleaning a liquid which flows through a channel and is polluted with solids, comprising an endless filter belt of interconnected flat filter elements which can be pivoted against one another, and a flexible driving means which is guided over a lower deflection device and at least one upper deflection device and comprising a framework which carries the deflection devices and the filter belt, wherein in the area of the upper deflection device a wiper device is arranged which can be driven to rotate and is arranged on a swinging link which is mounted on the framework, the wiper device being supported against the weight of the wiper device by a support device, and the support device being arranged together with the upper deflection device on a common carrier which is adjustable with respect to the framework.