An automatic flushing device for a screen filter of a biogas slurry drip irrigation system and a use thereof are provided. The automatic flushing device includes a feeding mechanism, a filter unit, a discharging mechanism and a control mechanism, where the filter unit is provided with a feeding end fixedly threaded to a discharging end of the feeding mechanism and a discharging end fixedly threaded to a feeding end of the discharging mechanism; and the control mechanism is clamped on a pipe of the feeding mechanism. The automatic flushing device enhances the cleaning strength and uniformity of ultrasonic waves to the filter screen. The ultrasonic vibration rod is nested inside the upper filter casing through the externally-threaded hollow cap and a threaded top portion of the upper filter casing, which greatly facilitates the cleaning, replacement and maintenance of the ultrasonic vibration rod.

The method relates generally to a filtration and liquid displacement method for separating valuable or harmful liquids, herein termed Process Liquid, from mixtures or slurries that contain such liquids and solid particles. The method employs upflow filtration, operation of SAP Means and use of a Sweep Liquid that has a higher density than the Process Liquid.

The method relates generally to a filtration and liquid displacement method for separating valuable or harmful liquids, herein termed Process Liquid, from mixtures or slurries that contain such liquids and solid particles. The method employs upflow filtration, operation of SAP Means and use of a Sweep Liquid that has a higher density than the Process Liquid.

A machine for processing liquid or semi-liquid food products, includes: a frame including a front wall and a lateral wall; at least one container for containing the product to be processed; a stirrer mounted inside the container; a thermal treatment system, operatively connected to the container to heat the walls thereof; a dispenser connected to the container to allow extracting the product to be processed, the dispenser being mounted on the front wall of the frame. A supporting rod, having a longitudinal axis, is coupled to the lateral wall and movable in rotation about an axis perpendicular to the lateral wall, between a rest position and an operatively active position. A shelf is rotatably coupled to the supporting rod. The supporting rod supports the shelf. The shelf is movable in rotation about the longitudinal axis between an inoperative position and an operative position.