The purpose of the present disclosure is, in a bubble generating device provided with a bubble generating unit for generating minute bubbles in water flowing through the inside of the cylindrical main body unit, to improve the bubble generating efficiency of the bubble generating unit. Provided is a bubble generating device provided with a cylindrical main body unit and a bubble generating unit disposed within the main body, wherein: the bubble generating unit is provided with slits extending radially centered on one point within the main body unit in a cross-sectional plane of the main body unit, and a column part protruding from the inner peripheral surface of main body unit and formed on the peripheral edge of the slits; and the amount of protrusion of the column part is gradually reduced toward the upstream side from the peripheral edges of the slits, and the column part has a recessed part formed on the downstream surface.

The present disclosure relates to a treatment tool sterilizer with a micro bubble type ozone water supply. The treatment tool sterilizer includes a sterilization tub configured to accommodate an object to be sterilized; a fresh water supply; an ozone water supply including a pressure pump configured to pressurize and transfer fresh water, an ozone generator, a mixer configured to mix fresh water and ozone, and a bubble generator connected to the mixer and configured to pass fresh water and ozone through the bubble generator so as to form micro bubbles; an ultrasonic generator; a drain; a heater mounted on the sterilization tub and configured to apply heat in the sterilization tub; and a controller configured to output a control signal.

To provide a nanobubble generating nozzle that is compact and capable of generating nanobubbles with high efficiency. The problem is solved by a nanobubble generating nozzle and a nanobubble generator comprising this nanobubble generating nozzle. The nanobubble generating nozzle comprises an introduction part for introducing a mixed fluid of a liquid and a gas into an interior thereof, a jetting part for feeding out the mixed fluid containing nanobubbles of the gas, and a nanobubble generating structure part for generating nanobubbles of the gas, between the introduction part and the jetting part. The nanobubble generating structure part comprises a plurality of flow paths having different cross-sectional areas through which the mixed fluid of the liquid and the gas is passed, in an axial direction of the nanobubble generating nozzle.

A system and method of the purification of drinking water, ethanol and alcohol beverages is based on the action of hydrodynamic cavitation processing of microbiological and chemical contaminants, micro particles and colloidal particles. The fluid flow moves at a high rate through a multi-stage cavitation device and filtration module to generate hydrodynamic cavitation features in the fluid flow. The cavitation features generate changes in the velocity, pressure, temperature, chemical composition and physical properties of the liquid. The cavitation features also prevent the deposition of contaminants upon and remove contaminants from the surface of the filter module, reduce the load on the filter elements and increase the life of the filter module.

A container system for liquids, including an in-container mixer/aerator in the exit throat of the container. The mixer/aerator is a cylinder, having axial peripheral grooves, and and axial central bore, divided by axial vanes.

An apparatus includes a body having a length extending from a first end to a second end. The body defines a bore extending through the entirety of the body and at least one of a plurality of grooves or holes around the bore. The body has a length that is dimensioned to be received entirely within a neck of a container.

The invention relates to a melt conductor (1), in particular a melt distributor or melt mixer, for an extruding die (2) of an extrusion facility (3), comprising a melt conductor block (4) with a multi-channel system (5), the multi-channel system (5) being arranged inside the melt conductor block (4) with three-dimensional extension and having at least one input (6) and at least one output (7) for polymer melt, between one input (6) and one output (7) fluidically connected to the input (6) several branchings (8) arranged in series and several levels (9a) of sub-branches (10) being formed over several levels (12a, 12b) of divided melt channels (11a, 11b); with m melt channels (11a) of the a.sup.th level (12a) with X.sup.th local cross-sections and n melt channels (11b) of the b.sup.th level (12b) with y.sup.th local cross-sections being present, wherein n>m if b>a, the y.sup.th local cross-sections of the melt channels (11b) of the b.sup.th level (12b) being smaller than the X.sup.th local cross-sections of the melt channels (11a) of the a.sup.th level (12a). The invention further relates to an extruding die, an extrusion facility and to a method of operating the extrusion facility.

The pipe insert for generating nano-bubbles of the present invention is an insert inserted into a plumbing pipe in the longitudinal direction, wherein, in order to increase the friction surface of a gas-liquid mixed fluid for generating nano-bubbles in the pipe, the body of the insert is configured such that either or both of dividing walls dividing the fluid path space of the pipe and space dividers protruding into the fluid path space of the pipe are formed continuously in the longitudinal direction of the pipe.

A fluid mixer includes a flow splitter, a plurality of channels and a mixing chamber. The flow splitter includes an inlet for receiving a flow of fluid and is configured to split the flow of fluid into a plurality of fluid streams. Each channel conveys a corresponding one of the fluid streams. The channels have dissimilar volumes and a substantially identical pressure drop across the length of each channel. The mixing chamber includes a plurality of inlets. Each of the inlets of the mixing chamber is connected to a corresponding one of the channels.

A fluid mixer includes a flow splitter and a mixing chamber. The flow splitter includes an inlet for receiving a flow of fluid and is configured to split the flow of fluid into first and second fluid streams. The second fluid stream has a higher density than the first fluid stream. The mixing chamber includes a first inlet, a second inlet and a mixing well. The second inlet is positioned below the first inlet. The second inlet of the mixing chamber is configured to receive the first fluid stream and the first inlet of the mixing chamber is configured to receive the second fluid stream to promote mixing of the first and second streams in the mixing well.