DUSTPROOF SEAL FOR TAPER AND GYRATORY CRUSHERS PREVENTING TURNING Russian patent published in 2019 - IPC B02C2/04 

FIELD: disintegrators and crushing devices.

SUBSTANCE: group of inventions relates to a dustproof seal and a crusher with such a seal. Crusher contains a fixed part containing an anther, and a crusher cone, which is supported with possibility of rotation relative to the fixed part in the direction of crushing rotation and in direction of idle rotation, which is opposite to direction of crushing rotation. Dustproof seal has a part in contact with the crusher cone, which is made with the possibility of direct or indirect contact with the crusher cone, and the part contacting with the duster, which is made with possibility of direct or indirect contact with anther. Dustproof seal is configured to form a friction force between the crusher cone and the dustproof seal through the part in contact with the crusher cone and/or between the dust guard and the dustproof seal through the part in contact with the duster when the crusher cone rotates at least in the idle rotation direction. At that, the dustproof seal is made so that the friction force generated by the part that touches the dust compartment and/or the part that touches the crusher cone was higher at rotation of the crusher cone in the direction of idle rotation, than at crusher cone rotation in the direction of crushing rotation.

EFFECT: dustproof seal ensures reduction of friction force in one of direction of crushing cone rotation.

17 cl, 7 dwg