A pool cleaning assembly includes a frame is that may be manipulated thereby facilitating the frame to be urged through a pool. A float is coupled to the top lateral member. The float floats in the pool thereby facilitating the frame to be oriented upright in the pool. A pair of wheels is provided. Each of the wheels is rotatably coupled to the frame to roll along a bottom of the pool. A plurality of brushes is provided and each of the brushes is removably coupled to the frame. Each of the brushes is frictionally engages the bottom of the pool when the frame is urged through the pool. Thus, each of the brushes cleans the bottom of the pool. A screen is removably coupled to the frame. The screen capture debris when the frame is urged in the pool thereby facilitating the debris to be removed from the pool.

A device and method for filtering a liquid, wherein the device (100) comprises a container (110), a filter unit (120) and a filtering medium (130). The container (110) holds the liquid (10) containing a solid substance (10a), and the filter unit (120) is slidable in the container (110). The filtering medium (130) is non-permeable to the solid substance (10a) in the liquid (10).

A kit is provided that includes an extraction tube or a transport tube; a filter, a liquid for bathing the filter within the tube; and a filter shaft. The filter shaft includes a distal portion that is coupled to a central portion of the filter. The filter shaft is configured to insert the filter into the tube for bathing the filter in the liquid. Other embodiments are also described.

A pool cleaning assembly includes a frame is that may be manipulated thereby facilitating the frame to be urged through a pool. A float is coupled to the top lateral member. The float floats in the pool thereby facilitating the frame to be oriented upright in the pool. A pair of wheels is provided. Each of the wheels is rotatably coupled to the frame to roll along a bottom of the pool. A plurality of brushes is provided and each of the brushes is removably coupled to the frame. Each of the brushes is frictionally engages the bottom of the pool when the frame is urged through the pool. Thus, each of the brushes cleans the bottom of the pool. A screen is removably coupled to the frame. The screen capture debris when the frame is urged in the pool thereby facilitating the debris to be removed from the pool.

The invention relates to a device and a method for filtering viscous or highly viscous liquids, in particular plastics melts, using an oscillating filter plate.

A disassembling and discharging device for battery recycling includes a crushing assembly, a high pressure tank, at least one pressure relief tank, and a filtering tank. The crushing assembly is provided with a first feed port and a first discharge port communicated with the first feed port; the high pressure tank is provided with a first inner cavity for containing discharging liquid, and the first inner cavity is communicated with the first discharge port; the pressure relief tank is provided with a second inner cavity, and the second inner cavity is communicated with the first inner cavity; and the filtering tank is provided with a third inner cavity, and the third inner cavity is communicated with the second inner cavity.

Disclosed is an independent double-negative-pressure shale shaker, and belongs to the technical field of petroleum drilling solid control. The independent double-negative-pressure shale shaker comprises a base, a fluid discharge device, an inclination angle adjustment mechanism, a screening device, an exciting motor and a double-negative-pressure system, wherein the double-negative-pressure system comprises a first negative-pressure system and a second negative-pressure system which are relatively independent; the first negative-pressure system dries drilling fluid of a first screen mesh set close to a material outlet, and the second negative-pressure system increases the treatment capacity of drilling fluid of a second screen mesh set close to the first screen mesh set; and meanwhile, in the deep well section, the second negative-pressure system can be switched to a fluid mist suction state, fluid mist on the screen surface is reduced, the safety is improved, and the pollution of fluid mist is reduced.