Rotary mixer, bubble shear filter, ultrafine bubble generation device and ultrafine bubble fluid manufacturing method

An ultrafine bubble generation device comprising a gas-liquid mixed fluid generator for generating a gas-liquid mixed fluid, a rotary mixer, and a bubble shear filter,

• the rotary mixer being provided with a hollow part including a vertex inside, and comprising an inflow hole for introducing a fluid into the hollow part, and a discharge hole for discharging the fluid, wherein
• a groove having a spiral shape is provided in an inner wall surface of the hollow part, the groove allowing the fluid introduced from the inflow hole to flow through the groove, and
• the discharge hole is provided away from a vertex of the spiral shape on an axis of the spiral shape,
• the bubble shear filter being provided with a hollow part inside, and comprising an inflow hole for introducing the fluid into the hollow part, and a discharge hole for discharging the fluid, wherein
• the hollow part is tubular, and a plurality of plate-like thin plates are arranged perpendicularly to a central axis of the hollow part such that the central axis passes through a center point of each circular plate,
• the thin plates adjacent to each other are provided with a plurality of openings and a plurality of pointed end portions, and
• an opening of a type 1 of thin plate and a pointed end portion of a type 2 of thin plate adjacent to the type 1 of thin plate are arranged to face each other, and connected with a pipeline.