Vertical shaft impact crusher and rotor thereof

A rotor for a vertical shaft impact crusher which rotates about a rotation shaft extending in a vertical direction and accelerates an object to be crushed by a centrifugal force, comprising:

• a rotor upper plate including a rotor upper plate hole which is an inlet for the object to be crushed, which is inserted into the rotor, and forming an upper portion of the rotor, wherein the rotor upper plate hole is disposed at the center of the rotor upper plate;
• a rotor lower plate disposed under the rotor upper plate to be spaced apart from the rotator upper plate and forms a bottom of the rotor;
• a rotor side wall which is arranged between the rotor upper plate and the rotor lower plate to be coupled with the rotor upper plate and the rotor lower plate, and disposed at a position spaced apart from the rotor upper plate hole in a radial direction of a rotation center of the rotor;
• a plurality of circular holes (541), which each is formed in the rotor and extends through the rotor side wall in the radial direction of the rotation center of the rotor,
• wherein each circular hole is tapered toward an outer sidewall of the rotor (5),
• wherein each circular hole is an outlet, through which the object to be crushed and accelerated by the rotor comes out of the rotor,
• wherein a center of the rotor upper plate hole (551) is aligned with a rotation axis of the rotor (5), wherein a center of the rotor (5) is aligned with the rotation axis of the rotor (5),
• wherein a first distance, when measured in the radial direction of the rotation center of the rotor, from the rotation axis of the rotor (5) to an inner edge of the rotor upper plate that forms the rotor upper plate hole (551) is shorter than a second distance, when measured in the radial direction of the rotation center of the rotor, from the rotation axis of the rotor (5) to each circular hole,
• wherein the radial direction of the rotation center of the rotor is perpendicular to the rotation axis of the rotor (5);
• and
• a plurality of wear-resistant tip rings, which each has a shape corresponding to a circular shape of each circular hole, is respectively detachably installed at a circumference of each circular hole, and
• wherein each wear-resistant tip ring is configured to be rotated at a different positions with respect to each circular hole.