Highly-efficient fluid mixing device based on relative rotation

The invention discloses a highly-efficient fluid mixing device based on relative rotation. The highly-efficient fluid mixing device comprises a cavity, a first fluid guiding tube, a second fluid guiding tube, a first bearing, a second bearing, a first end cover, a second end cover and a spiral channel, wherein the cavity is of a cylinder structure; the upper and lower ends of the cavity are closed; the upper end surface of the cavity is provided with a first circular hole and a second circular hole; the first fluid guiding tube is arranged at the first circular hole through the first bearing;the upper end opening of the first fluid guiding tube is closed through the first end cover; the second fluid guiding tube is arranged at the second circular hole through the second bearing; the upperend opening of the second fluid guiding tube is closed through the second end cover; the lower part of the drum wall of the cavity is provided with an outlet; the spiral channel is fixedly arranged on the circumference of the