DEVICE FOR DUST CATCHING FROM PNEUMATIC TRANSPORT FLOW OF LOOSE MATERIAL Russian patent published in 1999 - IPC

FIELD: equipment for processing of loose materials, in particular, for catching of dust and bust-like particles from pneumatic transport flow of granular polymeric materials - polyethylene, polypropylene, etc. SUBSTANCE: the device has branch pipes for inlet and outlet of material flows, gas-blowing machine, casing made as a double-section chamber, which in longitudinal section has a W-shape, and in the plane of chamber division into sections it is furnished with a butterfly valve that can be fixed in the preset position, the valve turning axis is located above the common edge formed by intersection of two inclined inner walls of the chamber. From above the chamber is furnished with a smoothly rounded-off wall, and the first section from the material flow inlet branch pipe is furnished from below with a dust discharge branch pipe, the second section is furnished with a branch pipe for discharge of cleaned material. The dust discharge branch pipe is connected to the gas-blowing machine. The butterfly valve can be adjusted in length. EFFECT: enhanced degree of cleaning of conditional product of dust and bust-like particles per working cycle thus preventing additional forming of dust. 2 dwg