BALL BALANCER AND CENTRIFUGAL SEPARATOR PROVIDED THEREWITH

摘要

PROBLEM TO BE SOLVED: To enlarge the correction extent of unbalanced mass and lessen the vibration of a rotor by setting the height of a cylinder in the axial direction to be within a specified range of the times as long as the ball diameter or longer and setting the height of the cylinder to be sufficient to arrange two rows of balls in zigzag arrangement at high speed rotation. SOLUTION: A female screw 28 to be fixed while the center being conformed to the rotation axis is installed in the center of a balancer body 20 and a balancer cover 26 having a ventilation hole 29 is fixed in the upper part of a stopping part 25 by stopping screws 27. The distance of the stopping part 25 in an upper part of the position 23 at which the diameter of a barrel shape cylinder 22 is the maximum from the bottom 24 in the lower side of the position 23 of the maximum diameter is made wide enough to arrange balls 21 in zigzag arrangement. In other words, the distance from the bottom 24 to the stopping part 25 is set to be at least about 1.4-2 times as long as the diameter of the balls 21. Consequently, the correction extent of unbalanced mass at the time of high speed rotation can be set wide and the vibration of a rotor can be suppressed and a centrifugal separator with a long life can be obtained.