The PZ type vibratio n screens are destined for initial classification of aggregate and other loose materials.The screens are provided with two inertia drives fixed on screen sides and connected directly or indirectly with electric motors. Contra rotating unbalanced masses of drives cause centrifugal forces, which either delete themselves or sum up in certain positions, thus initiating harmonie movement with elliptical trajectory of the springy supported screen. Movement parameters and kinds of screens are selected depending on process requirements.
The PZ type screens belong to the new generation of large size vibrating machines with diversified inclination of screen, in which the principle of thin layer materia I screening at large feeding rate of feed materia! on steep scren section. lt allows substantial increasing of the unit capacity and screening efficiency in relation to classical layout screens.
Depending on requirements of the ordering party the screen construction may be connected with strengthened bolts or the HUCK-BOLT type joints.