Sealing device between the movable crushing member and the body of a giratory crusher

In a gyratory crusher comprising a shaft line supporting a movable crushing member within a body of the gyratory crusher, the said shaft line being able to be actuated with a pendulum movement, a rotary movement, and an axial translatory movement relative to the body;

• a sealing device comprising an annular chamber carried by the body, surrounding the volume swept out by the shaft line in the course of its pendulum movement, open upwards and containing a liquid, and a substantially cylindrical rigid wall carried by the movable shaft line, and projecting downwards into the liquid in the chamber, the width of this chamber being greater than the amplitude of the pendulum movement of the shaft line at the level of the said wall, with the improvement that the said rigid wall is extended downwards, around all its periphery, by a flexible skirt.