A filter that includes: a filter base portion having a first main surface and a second main surface, the filter base portion defining a plurality of through-holes connecting the first main surface and the second main surface via an inner wall extending from the second main surface toward the first main surface; and a support portion that has a plurality of protruding portions located in respective through-holes of the plurality of through-holes and disposed on the second main surface of the filter base portion, the plurality of protruding portions having an outer wall in contact with the inner wall of the filter base portion, wherein a first opening on the first main surface side of the filter base portion is larger than a second opening on the second main surface side of the filter base portion, and there is a clearance between the filter base portion and the support portion.

A liquid accumulator and a heat exchange system having the liquid accumulator are provided. The liquid accumulator includes a barrel body and a one-way valve, and the one-way valve is disposed in the barrel body. The one-way valve includes a valve seat and a valve plate, the valve seat is provided with a valve port, a side of the valve seat towards the outlet end is provided with the valve plate, the valve port is covered by the valve plate. And a protrusion is located surrounding the valve port and the valve plate is capable of moving towards or away from the valve port, so as to open or close the one-way valve.

Systems and methods for managing debris material in a fluid are described. In examples, the system may include a flow line that directs a fluid into an inlet of a barrel, through the barrel to filter at least some material from the fluid, and out of an outlet of the barrel. The system may also include a backflush line coupled to the flow line between an inlet valve and an inlet of the barrel and between an outlet valve and an outlet of the barrel. In examples, the system includes a pump positioned on the backflush line, where in a backflush mode, the inlet and outlet valves close to isolate the barrel, and the pump circulates the fluid through the backflush line and through the barrel in a reverse direction to move fluid and material from the barrel to a screen overflow assembly.

A pod assembly for use in a beverage machine is provided. The pod assembly includes a container and a filter disc that is detachably coupled to the container. The container includes a base, a side wall having a lower rim coupling the side wall to an outer perimeter of the base, and a flange coupled to an upper rim of the side wall and extending radially outward from the upper rim. The filter disc includes a central portion with multiple central openings, a dome-shaped portion with multiple secondary openings, an annular portion extending radially outward from the dome-shaped portion, a foot portion extending vertically from the annular portion in a first direction, and a retention flange extending vertically from the annular portion in a second direction.

A pod assembly for use in a beverage machine is provided. The pod assembly includes a container and a filter disc that is detachably coupled to the container. The container includes a base, a side wall having a lower rim coupling the side wall to an outer perimeter of the base, and a flange coupled to an upper rim of the side wall and extending radially outward from the upper rim. The filter disc includes a central portion with multiple central openings, an inclined portion with multiple secondary openings, and an outer flange situated at a perimeter of the inclined portion and having a substantially square shape.

Provided are a nucleic acid extraction and purification device and a biochemical molecule extraction and purification device, belonging to the field of experimental supplies. Both devices have the functionality of a test tube, and thus can hold a liquid to perform preprocessing extraction and purification of nucleic acids or biochemical molecules such as nucleic acids, i.e. achieving a process of cell rupture. Furthermore, both devices can quickly and easily transfer liquid to the extraction membrane, achieving the extraction and purification of nucleic acids or biochemical molecules such as nucleic acids. Furthermore, the two devices do not need to manually fit with a pipettor during the process of liquid transfer or use an automated robotic arm and a mechanical pipettor to complete the process of liquid transfer.

A method for pre-wetting a polypropylene (PP) filter for filtering slurry and a PP filter package are provided. The method for pre-wetting the PP filter for filter slurry consists of steps of: pre-wetting a PP filtering media of the PP filter and packaging the pre-wetted PP filter in a packaging member sealingly. A PP filter package includes a cartridge, a PP filtering media and a packaging member. The PP filtering media is disposed in the cartridge to form a PP filter. The PP filtering media is pre-wetted, and the PP filter is sealingly packaged in the packaging member.

Embodiments of the present disclosure are directed to a device and method for the filtration of gray water from a household. In some embodiments, the gray water can be filtered using a conical rotor and filtration media, which can provide enhanced filtration through the use of Taylor vorticity filtration. The filtered water can have various uses back in the household after filtration.

Provided is a washing device that washes a filter of an extraction device with a fluid, the extraction device including an extraction tank for storing an extraction material, a lid body supported openably and closably at a lower portion of the extraction tank, and the filter which is provided on the lid body, and on which the extraction material is placed, the washing device including, a tube body which is disposed at a fixed position with respect to the extraction tank, and through which the fluid passes, and an ejection port provided on the tube body and injecting the fluid toward the filter when the lid body is in an open state.

Skimming devices may use pressurized water from, for example, a return line of a swimming pool or spa. The devices may be adjustable vertically and levelled relative to an upper water surface (waterline) of a pool. They additionally may create “blades” of debris-laden pool water entering their floating heads so as to move debris smoothly and efficiently over wings or foils into associated filters.