CONTRA-ROTATING MULTI-LAYER PROPELLER UNIT FOR MIXING AND AERATION

• Main Authors: MOON, Young June, KIM, Dae Han
• Format: Patent
• Language: English; French; German
• Published: 10.04.2019
• Subjects: AGRICULTURE; ANIMAL HUSBANDRY; BLASTING; CARE OF BIRDS, FISHES, INSECTS; CHEMISTRY; FISHING; FORESTRY; HEATING; HUMAN NECESSITIES; HUNTING; LIGHTING; MECHANICAL ENGINEERING; METALLURGY; MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING; NEW BREEDS OF ANIMALS; NON-POSITIVE DISPLACEMENT PUMPS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; TRANSPORTING; TRAPPING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE; WEAPONS

A contra-rotating multi-layer propeller unit for multi-phase flow according to an exemplary embodiment of the present disclosure includes: a shaft part; a front propeller and a rear propeller connected to the shaft part; an air collection part including a predetermined space therein and the shaft part positioned in the internal space; and an air supply pipe configured to supply air into the air collection part, and a rear propeller blade includes a two-phase blade connected to a rear propeller hub, a layer structure of which an inner surface is connected to an end portion of the two-phase blade, and a single-phase blade positioned at a location corresponding to the two-phase blade on an outer surface of the layer structure.