Impact crusher and an upper rotor assembly
A impact crusher with dual rotor and an upper rotor assembly ( 50 ) for the impact crusher are disclosed herein. The upper rotor ( 30 ) of the impact crusher comprises two discs on top of each other. The upper rotor ( 30 ) comprises a plurality of hammers ( 40 ) pointing down, to the outer perimeter of the lower rotor ( 20 ) discharging the material to be crushed at high speed. Each hammer ( 40 ) has a support shaft ( 41 ) that extends vertically between the first disc ( 31 ) and the second disc ( 32 ). The distance between the first disc ( 31 ) and the second disc ( 32 ) provides torsional structure to the connection between the hammer and the upper rotor ( 30 ). The upper rotor ( 30 ) is configured to be tilted into a service position, wherein the service position is tilted between 90 degrees and 180 degrees from a crushing position.
1 . An impact crusher, comprising:
a vertical shaft configured to receive a flow of material to be crushed;
a lower rotor having a vertical axis, configured to receive the flow of material from the vertical shaft and to rotate to a first direction about the vertical axis for accelerating the flow of material;
an upper rotor configured to rotate above the lower rotor to a second direction about the vertical axis;
the upper rotor having a plurality of hammers extending down to rotate at a level of the accelerated flow of material;
wherein the impact crusher further comprising:
an upper rotor assembly having the upper rotor;
the upper rotor assembly is connected to a lower rotor assembly having the lower rotor by an articulated joint;
wherein the upper rotor assembly is configured to be tilted into a service position along the articulated joint;
the upper rotor further including:
a first disc;
each of the plurality of hammers including a wear part and a support shaft, wherein the support shaft is connected from a lower position to the first disc; and
a second disc at a distance above the first disc, wherein the support shaft is connected from an upper position to the second disc.
2 . The impact crusher according to claim 1 , wherein the support shaft is configured to be pushed through the second disc towards the first disc.
3 . The impact crusher according to claim 1 , wherein the upper rotor further including a plurality of impact bushings between the first disc and the second disc, and wherein each of the plurality of impact bushings is configured to receive one of the support shaft.
4 . The impact crusher according to claim 1 , wherein the upper rotor further including a plurality of profile shaped openings, wherein each of the plurality of profile shaped openings is configured to receive one of the support shaft, and wherein each of the support shaft including a profile shape to match one of the plurality of profile shaped openings.
5 . The impact crusher according to claim 1 , comprising multiple radial flanges between the first disc and the second disc.
6 . The impact crusher according to claim 1 , wherein the support shaft including at least one vertical groove configured to receive at least one lip of the wear part, wherein the groove is configured to hold the wear part laterally in place; and wherein the wear part is locked horizontally in place by a collar.