Gyratory Screener

Square gyratory screen is also called reciprocating screen, if see from the motion
trail of screen box. The vibratory force produced by its driving device is the inertial
force twining along the dead axle, the direction of which is change according to a
certain regular. The essence of square swing screen is the reciprocating inertia force
formed by the rotation of eccentric wheel winding the dead axle. According to the
structure characteristics and working principle of swing screen, its screen surface is
arranged with level or incline ( the angle of inclination is 0°~5°). working principle of swinging screen is that after starting the screen machine,
the shaking body of screen machine namely screen box make reciprocating motion under
the action of the inertial force, screen box drives screen surface to make periodic shaking,
which makes the material on the screen surface to make directional jumping movement with
the screen box. During the period the material smaller the aperture of the screen surface fall to
under layer through the sieve mesh to become the screen underflow. The material bigger than the
aperture of the screen surface is discharged from the discharge gate after the continuous roll jumping
movement and finally complete screening work.
From the structure and working principle of FYBS2 square swing screen can see that the resident time
of material staying on the screen surface namely the distance of its drive mechanism eccentric wheel apart
from the motion trail of material has a very important influence, that is to say having the opposite effect to
processing capacity and screening efficiency of screening machine. To this end, in actual screening assignments,
we can make our choices in the two aspects of production capacity and screening efficiency.
With the same or similar configuration, FYBS2 type swing screen have higher processing ability and the
screening efficiency than the general inertia vibrating screen, the models can artifically control the material
in the screen surface movement and residence time,  because the materials' movement speed and acceleration
are to change nonlinear curve, therefore, materials and the screen surface had more chance to contact, of course
also increase the screening rate.


Model options:
FYBS1-1030
FYBS1-1230, 1236
FYBS1-1530, 1536
FYBS1-1836
FYBS1-2036