IMPACT CRUSHER Russian patent published in 1995 - IPC

FIELD: crushing devices. SUBSTANCE: secondary crushing rotors 3 and 4 in impact crusher revolve in opposite directions in synchronism with each other and with primary crushing rotor 2. They have concave-concave impact reflecting surfaces which can be formed by radius equal to distance between point of intersection of feeder chute plane with circle of primary crushing rotor and common reflecting surface formed by the moment of collision with material being crushed by two impact surfaces of secondary crushing rotors; mass of these rotors increases monotonically from center of rotation of each rotor along larger axis of symmetry. EFFECT: enhanced efficiency of crushing. 1 dwg