Water filter with self-rinsing capability that includes filter housing, hollow cartridge core, and mesh filter. The filter housing includes a hollow housing with top and drain openings, a top cover with inlet and outlet ports, a one-way pressure valve, and a drain tap that includes a rod, an opening and closing knob that is connected to the rod, and an opening and closing barrier with passageway that is connected to the rod. The cartridge comprises of a tube with inlet and outlet passageways, and spray pipes with spray nozzles, and enables water to flows from the tube into the spray pipes and outside into the filter housing through the nozzles. The mesh filter has a shape of a hollow cylinder that is worn on the tube in a gap between the tube and the spray pipes.

An object of the present invention is to provide a filtering device which makes it possible to obtain a chemical liquid having excellent performance and enables filter media to have sufficiently long pot life. Another object of the present invention is to provide a purification device, a chemical liquid manufacturing device, a filtered substance to be purified, a chemical liquid, and an actinic ray-sensitive or radiation-sensitive resin composition. A filtering device according to an embodiment of the present invention has a first filter unit including a first filter, which satisfies at least one condition selected from the group consisting of following conditions 1 to 3, and a housing accommodating the first filter and a second filter unit including a second filter different from the first filter and a housing accommodating the second filter, in which the first filter unit and the second filter unit are independently disposed in a pipe line through which a substance to be purified is supplied. Condition 1: the filter has a filter medium including two or more layers containing materials different from each other. Condition 2: the filter has a filter medium including two or more layers having different pore structures. Condition 3: the filter has a filter medium including one layer in which different materials are mixed together.

A water filter is provided. The water filter includes a filtration material and a filter housing spaced for accommodating at least a portion of the filtration material therein. The water filter also includes a housing cap coupled to an upper end of the filter housing for enclosing the filtration material within the water filter. The housing cap includes an upper portion, a lower portion, and a channel formed through the upper portion and the lower portion. The water filter also includes an interface adapter accommodated in the channel, wherein the interface adapter includes a side wall vertically extending from an upper surface of the interface adapter and partially around a perimeter of the upper surface, and a projection vertically extending from the upper surface, wherein the projection is integrally formed with the upper surface and a portion of the side wall.

Fibrous porous filter elements formed by joining two fibrous porous sections, porous filters comprising the joined sections, filter baskets and filter devices comprising the elements and filters, methods of making the filter elements and filters, and methods of filtration using the filter elements and filters, are disclosed.

A system for treating wash waste liquid is described, configured for coupling to a wash module of a continuous Tunnel washing machine for the field of Preclinical Pharmaceutical Research, said wash module (12) comprising a wash chamber (25), characterized in that it comprises: a wash tub (22) with a side wall (31) substantially cylindrical in shape, with a tangential liquid suction outlet (33) and a substantially conical bottom, with a wash waste drain point (35) at the vertex of the cone, said tangential suction being adapted to generate a rotational motion of the liquid in said tub, said tub being positioned under said wash chamber (25), so as to receive said wash liquid by gravity; a centrifugal wash pump (21) with an open impeller, adapted to take in liquid from said tangential liquid suction outlet (33); an in-line filter (26) with an internal filter cartridge of the “wedge-wire” type, adapted to filter the liquid coming from said centrifugal pump (21) and deliver it back, filtered, into said wash chamber (25), and comprising a flush valve (27) for discharging the filtering waste.

A filter unit includes a housing, a first filter and a second filter disposed in the housing, and a liquid flow path that extends through the first and second filters in series. The first filter includes a first axial end affixed to the housing and a first filter media. The second filter includes a first axial end affixed to the housing at the outlet and a second filter media. The liquid directed radially outward through the first filter media and radially inward through the second filter media. A method of filtering a liquid within a filter unit includes passing the liquid radially outward through a first filter media of a first filter, directing the liquid from the first filter to a second filter, and passing the liquid radially inward through a second filter element of the second filter.

Provided is an apparatus and method for interacting with objects of interest. A filtering apparatus can comprise a channel system, through which objects of interest are able to diffuse. The channel system can comprise a channel of suitably configured non-uniform cross-sectional area along the length of the channel. In some embodiments, the channel system can be provided by a suitably configured porous bulk material. In some embodiments, channel system can comprise an interior chamber comprising filtered objects, where the filtered objects are contained on a first side by a first filtering surface, such as a semi-permeable membrane, and on a second side by second filtering surface, where the cross-sectional areas of a representative channel of the first and second filtering surfaces are not identical. The filtered objects can also be configured to interact with an externally applied body force, such as an electric field acting on charged filtered objects. The channel system is configured to interact with objects of interest on a scale which is smaller than a value several orders of magnitude larger than the mean free path of an object of interest. Some embodiments are configured to interact with particles, such as air molecules, water molecules, or aerosols. Other plate embodiments are configured to interact with waves or wavelike particles, such as electrons, photons, phonons or acoustic waves.

A filter device includes a case, an external filter disposed inside the case to filter substances introduced into the case and configured to be movable with respect to the case, and an internal filter disposed inside the external filter to filter the substances introduced into the case and configured to be movable with respect to the external filter.

A water filter cartridge is provided. The water filter cartridge includes a filter housing enclosing a filtration material therein. The filtration material includes a first cavity generally surrounded by the filtration material and a second cavity formed between an interior of the housing and an exterior of the filtration material.

Provided is an apparatus and method for interacting with objects of interest. A filtering apparatus can comprise a channel system, through which objects of interest are able to diffuse. The channel system can comprise a channel of suitably configured non-uniform cross-sectional area along the length of the channel. In some embodiments, the channel system can be provided by a suitably configured porous bulk material. In some embodiments, channel system can comprise an interior chamber comprising filtered objects, where the filtered objects are contained on a first side by a first filtering surface, such as a semi-permeable membrane, and on a second side by second filtering surface, where the cross-sectional areas of a representative channel of the first and second filtering surfaces are not identical. The filtered objects can also be configured to interact with an externally applied body force, such as an electric field acting on charged filtered objects. The channel system is configured to interact with objects of interest on a scale which is smaller than a value several orders of magnitude larger than the mean free path of an object of interest. Some embodiments are configured to interact with particles, such as air molecules, water molecules, or aerosols. Other plate embodiments are configured to interact with waves or wavelike particles, such as electrons, photons, phonons or acoustic waves.