Conveying and separation unit for ballistic projectile arresters

Abstract

A conveying and separation assembly for the impact material of a ballistic projectile arrester for indoor firing grounds, of the type that comprises a heap of granulated material as the impact material, and a pneumatic conveyor for sending the granulated material once it has been separated from the exploded projectiles up to the top of said heap. The assembly comprises a variable-diameter worm screw or helical screw, that rotates about a horizontal axis and is arranged within a half cylinder which is open at its upper portion, the worm screw lying in a direction substantially parallel to that from which the projectiles come; a motor for the worm screw; and gravity separation of the exploded projectiles from the granulated material; the half cylinder being connected, at its rear terminal part, with the worm screw or pneumatic conveyor which are employed for sending the material to the top of the heap.

Dependencies are inferred from the claim text.