A stirrer is provided such that a fluid being processed can be more efficiently shown by way of the action of an intermittent jet flow and processing capacity can be improved. The stirrer concentrically includes a rotor that includes a plurality of flat vanes and that rotates, and a screen that is place around the rotor. The screen includes a plurality of slits in the circumferential direction thereof, and screen members that are positioned between adjacent slits. The fluid being processed is discharged by rotation of the rotor from the inside of the screen to the outside as an intermittent jet flow through the slits. The width of the distal working face on the distal end of the vane in the rotational direction is smaller than the width of the basal end of the vane in the rotational direction.

A stirrer is provided that can more efficiently achieve shearing applied, by an action of an intermittent jet flow, to a fluid to be processed. The stirrer concentrically includes a rotor including a blade, a partition wall, and a screen, wherein: the screen includes a plurality of slits in a circumferential direction thereof and screen members located between the adjacent slit; by rotating at least the rotor of the two components, the fluid to be processed is discharged from the inside to the outside of the screen as the intermittent jet flow through the slit of the screen; the screen has a cylindrical shape having a circular cross section; an opening of the slit provided on the inner wall surface of the screen is used as an inflow opening; openings of the plurality of slits provided on the outer wall surface of the screen are used as outflow openings; and the width of the outflow openings in the circumferential direction is set to be smaller than the width of the inflow opening in the circumferential direction.

An aeration device pertaining to the technical field of sewage treatment includes a flow mixing chamber and an air inlet chamber. The flow mixing chamber has a liquid inlet opening, a liquid outlet opening, and an air inlet hole penetrating the chamber wall and located inside the air inlet chamber. The air inlet chamber has an air inlet opening and an interior space whose cross-sectional area is gradually reduced along the liquid flow direction in the flow mixing chamber. The cross-sectional area and number of the air inlet hole can be properly set in order for the mixed fluid produced by the aeration device to have relatively high-density small-diameter air bubbles that contribute to mixing the liquid flow and air flow sufficiently, dissolving oxygen rapidly and sufficiently into the liquid flow, increasing the oxygen dissolution rate of the mixed fluid, and enhancing aeration efficiency.

Provided is a foam discharger including: a mixing portion for mixing a liquid agent and a gas to foam the liquid agent; a discharge opening for discharging the foamed liquid agent; and a flow path in communication with the discharge opening, and for supplying the foamed liquid agent from the mixing portion to the discharge opening. The discharge opening is provided with a first porous member. On an upstream side of the first porous member, a cross-sectional area of the flow path on a cross section orthogonal to a supply direction in which the foamed liquid agent is to be supplied increases along the supply direction. The cross-sectional area of the flow path at the discharge opening is at least 1.2 times the minimum cross-sectional area of the flow path.

The object of the present invention is to provide a faucet apparatus in which both the area for the air inlet port and the area for the babble-water flow discharge port are secured, without excessively increasing sizes of a faucet aerator cap and a faucet apparatus. The air inlet port is provided in a lateral surface of the faucet aerator cap. The flow channel of the spout is provided with a communication port for guiding air between the outside wall and the flow channel toward the air inlet port.

A micro-bubble generator is provided between an input end and an output end of a water outlet device. The micro-bubble generator includes a water inlet member and a water outlet member. A gas inlet gap is remained between the water inlet member and the water outlet member, with the gas inlet gap being communicated to external air, such that the external air is allowed to enter the micro-bubble generator for gas-liquid mixing and generate minute and dense bubbles.

A micro bubble generating device disposed at one end of a liquid supply device including a water inlet unit, a water outlet unit, an air inlet groove, and a first sleeve. The water inlet unit is penetrated by first passages, and one side being penetrated is provided with a first connecting surface; the water outlet unit is penetrated by second passages, and one side being penetrated is provided with a second connecting surface. The second connecting surface faces the first connecting surface, and they partially abut against each other to form the air inlet groove. The air inlet groove comprises a third passage and a first accommodating chamber. The first accommodating chamber has a first spacing, the first spacing is different from a second spacing of the third passage. The first sleeve is disposed at another side of the water outlet unit.

A device for mixing powders by cryogenic fluid, characterised in that it comprises at least: a chamber for mixing powders, comprising a cryogenic fluid; a chamber for supplying powders in order to allow the powders to be introduced into the mixing chamber; means for agitation in the mixing chamber so as to allow the mixing of the powders placed in suspension in the cryogenic fluid.

A nano-bubble water generating apparatus containing an application gas includes a motor, a pump integrated with the motor for supplying liquid, typically water, from an inlet pipe under a predetermined pressure through a supplying pipe to a pressure tank, a nano-bubble water generating tube mounted at the water entrance of a pressure tank, an electronic control portion, a pressure adjuster including an outer air inflowing portion to introduce an outer air or a specific gas supplied thereinto to control a pressure in the pressure tank, uniformly and a pressure adjusting portion airtightly coupled on the upper portion of the outer air inflowing portion to adjust an amount of outer air or specific gas to be supplied, and a nano-bubble water expanding tube for expanding and shattering nano-bubble water through an outlet pipe from the pressure tank, so that the size of the nano-bubble water is better micronized.

To condition an operating medium in a test object circuit (PK) of a test object (P) on a test bench to a desired temperature as quickly as possible, the invention proposes providing a mixing unit (3), there being provided, in the mixing unit (3), a mixing region (28) in which operating medium of the test object circuit (PK) can be mixed with preconditioned operating medium from a conditioning circuit (KK) in order to condition the operating medium in the test object circuit (PK) to the predefined setpoint temperature (T_SOLL), there being provided, on the mixing unit (3), for the fluidic integration of the mixing unit (3) in the test object circuit (PK), at least one test object circuit supply connection (26a) and at least one test object circuit outlet connection (26b) which are fluidically connected to one another via the mixing region (28) in order to form a part of the test object circuit (PK), there being provided, on the mixing unit (3), for connection of the mixing unit (3) to a conditioning unit (2) of the conditioning system (1), at least one conditioning unit supply connection (27a) and at least one conditioning unit return connection (27b) which are fluidically connected to one another via the mixing region (28) in order to form a part of the conditioning circuit (KK) for the operating medium.