FIELD: crushing or grinding of various materials; grinding of grain.
SUBSTANCE: group of inventions relates to jaw crusher, installation with such crusher and method of processing mineral material by means of said devices. Jaw crusher comprises fixed and movable jaws forming crushing chamber open from above. Stationary jaw comprises the first wearing part, and the movable - con-rod and the second wearing part. Connecting rod attached to the first eccentric shaft with possibility of rotation is additionally rotatably attached to the second eccentric shaft designed so that to enable movement of the moving jaw to create a trajectory of movement with a substantially linear crushing stroke. At that, eccentricity of the second eccentric shaft is more than eccentricity of the first eccentric shaft, besides, the second eccentric shaft is located between the first eccentric shaft and grinding chamber. Plant for processing of mineral material is characterized by that it comprises said jaw crusher. Method of processing mineral material in said jaw crusher or plant comprises substantially linear crushing stroke is directed to material to be crushed in crushing chamber by rocking second eccentric shaft forward and back in response to rotation of first eccentric shaft.
EFFECT: group of inventions improves efficiency of mineral material grinding, reducing vertical movement of jaw.
13 cl, 4 dwg
