Patent ID: 7520925

Claim:
A device for filtering and silencing blower air from a pneumatic conveying blower, said device comprising: a casing, generally a narrow walled cylinder, having a closed lower end and an opposite open upper end, an inner diameter and an outer diameter, an inlet extending outward from said casing proximate said lower end adapted to receive blower air, and a flange joining said upper end; said flange facing generally perpendicular to the longitudinal axis of said casing and having an annular shape with an inner diameter proximate to the inner diameter of said casing; a locking ring, mutually parallel and spaced apart from said flange, having an upper surface, an opposite lower surface, and at least three spaced slots therein; a lid, having a generally centered cylindrically shaped outlet with a diameter approximately that of said inlet adapted to discharge the blower air from said device, at least three ears being coplanar and perpendicular to said outlet upon one end, said ears having a similar shape as said slots, at least three taps, each locating upon an ear and joining to said outlet; and, a filter element, having a generally narrow walled cylindrical shape, locating within said casing between said inlet and said lid.