The invention relates to a particle annular Couette 
shear flow experiment device.  The technical solution is: including the casing, support rods, beams, shearing chamber, 
frequency conversion motor and transmission mechanism, the shearing chamber includes a 
chassis, an inner cylinder and an outer cylinder, the inner cylinder and the outer cylinder are coaxially arranged, and the inner cylinder  One end of the cylinder is fastened coaxially with the 
chassis, there is a gap between the 
chassis and the outer cylinder, the other end of the inner cylinder is tightly connected with the beam, and the support rod is tightly connected with the beam and the upper cover of the casing; the transmission mechanism includes  The slewing disk, the slewing support bearing, the driving shaft and the worm gear 
reducer, the outer cylinder and the slewing disk are coaxially fastened, the slewing disk is coaxially fastened with the inner ring of the slewing support bearing, the outer ring of the slewing support bearing is connected with the 
machine  The upper cover plate of the shell is tightly connected, one end of the 
drive shaft is coaxially connected with the turntable, the other end of the 
drive shaft is coaxially connected with the output shaft of the worm gear 
reducer, and the 
frequency conversion motor is coaxially connected with the input shaft of the worm gear 
reducer.  The experimental device of the invention has rich 
particle flow characteristics and high experimental precision.