Abstract: A homogenous mixing apparatus is provided that includes a circulation unit, a dynamic mixing unit, wherein a feeding port of the first-stage dynamic mixing device communicates with the discharging end of the circulation unit, a discharging port of the third-stage dynamic mixing device communicates with the feeding end of the circulation unit, and each of the dynamic mixing devices includes a dynamic mixer; and a control unit, configured to be capable of controlling the dynamic mixing unit, so that the dynamic mixers of the first-stage, second-stage, and third-stage dynamic mixing device are capable of being independently started and shut down and operated at independent rotating speeds, wherein the dynamic mixers each includes a stator and a rotor, rotating speed ranges of the dynamic mixers of the first-stage, second-stage, and third-stage dynamic mixing device increase in sequence, and distances between the rotors and the stators decrease in sequence.

Abstract: A bathtub device for bubble bath physiotherapy, wherein the bathtub body is mounted on the bathtub body support. The exhaust system of the bathtub device is mounted in a space between the bathtub body and the bathtub body support. A fan is configured for delivering gas. The air suction inlet ends of the air suction pipe are configured to be in communication with the upper open side of the bathtub body, and the air suction outlet end is connected to the air inlet side interface device of the fan. The exhaust inlet end of the exhaust pipe is connected to the air outlet side interface device of the fan. The present invention further provides a bubble bath physiotherapy system comprising the bathtub device. By using the bathtub device, a safer bubble bath can be achieved.