Impact crusher, an upper rotor and a hammer
AssigneeMaicon Engineering Oy
InventorsTapio Korpijaakko, Marko Reinikainen, Teemu Laasonen
Life of this patent
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Abstract
A impact crusher with dual rotors, an upper rotor (30) and a hammer 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).
Claims13
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 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 same vertical axis;
- said upper rotor comprising a plurality of hammers extending down to rotate at the level of the accelerated flow of material;
- the upper rotor comprising:
- a first disc;
- the plurality of hammers comprising a wear part and a support shaft, wherein the support shafts are connected from a lower position to the first disc;
- and
- a second disc at a distance above the first disc, wherein the support shafts are connected from an upper position to the second disc.
An upper rotor for an impact crusher, comprising:
- a vertical shaft configured to receive a flow of material to be crushed;
- wherein the upper rotor is configured to rotate above a lower rotor;
- and
- comprising a plurality of hammers extending down to rotate at the level of the accelerated flow of material discharged from the lower rotor;
- a first disc;
- the plurality of hammers comprising a wear part and a support shaft, wherein the support shafts are connected from a lower position to the first disc;
- and
- a second disc at a distance above the first disc, wherein the support shafts are connected from an upper position to the second disc.
Dependencies are inferred from the claim text.