PASS-THROUGH SCREEN Russian patent published in 2014 - IPC B07B1/22 

FIELD: mining.

SUBSTANCE: pass-through screen comprises a deck plate, drive, loading and unloading devices. The deck plate is formed by the sections series connected to each other along the deck plate by their end polygonal holes. Each section is assembled from two subsections. The first subsection along the perimeter is formed by even amount (minimum four) of identical first isosceles perforated triangles series connected by their lateral sides to the lateral sides of minimum four identical second isosceles perforated triangles, the bases of which are greater than the bases of the first four isosceles perforated triangles with formation of small and large end polygonal holes. The second subsection is mounted from series connected along the perimeter four (minimum) identical isosceles perforated triangles with the lateral sides equal to the bases of the second isosceles perforated triangles of the first subsection with the lateral sides of four (minimum) identical isosceles perforated triangles with the apex angle 90° with forming of small and large end polygonal holes. The large end polygonal hole of the first subsection is equal to a small end polygonal hole of the second subsection. Along the length of the deck plate a conic spring with a flat section of turns is mounted, which is fitted with a device for changing of pitch of turns by means of its extension or compression.

EFFECT: increasing screening intensity and improving efficiency.

9 dwg