Abstract: The device for treatment of liquids by the help of generation of an electrically powered discharge of low-temperature plasma in liquid environment where is, when the liquid flows, possible to achieve generation of cavitation or super-cavitation which consists of mutually in series connected a pressure regulator and a cavitation tube which is formed by two mutually connected inlet chamber, confusor, working chamber, diffusor and a discharge chamber, where the essence of the invention is that there is in the inlet chamber in its lengthwise axis in direction of liquid flow placed a powered electrode which by its free end reaches into the working chamber and to it is electrically conductive connected a high voltage source whereas the powered electrode is electrically insulated from the body of the cavitation tube and also is in the discharge chamber placed a grounding electrode which is in electric contact with the liquid.

Abstract: Fluidic nozzle for emitting pressurized liquid includes a body forming mutually interconnected chambers including a liquid inlet chamber, an oscillatory chamber, and a liquid outlet chamber together defining a longitudinal axis of the nozzle. The oscillatory chamber includes a vortex section for inducing swirling of the liquid, A stream deflector is disposed in the vortex section upstream of an entrance to the outlet chamber, the stream deflector extending in a direction laterally of the axis from one wall of the vortex section to an opposite wall thereof.

Abstract: Driving unit for a vertical shaft-driven pump for pumping liquids from wells and deep bore holes through a riser pipe, the driving unit having a cross-shaped base, a top flange mounting a prime mover such as an electric motor, radially disposed supporting ribs and upwardly and radially inwardly inclined reinforcing webs. A bearing box is disposed on the central axis of the driving unit assembly between the ribs, a stuffing box, forming a part of the riser pipe being disposed in the cross-shaped base. The driving unit, without any alteration thereof, permits the use of a branch, liquid delivering pipe which extends laterally either below or above the cross-shaped base, and in the latter case, between any two adjacent arms of the cross-shaped base of the driving unit assembly.