Patent ID: 6832887
Filing Date: 2004-12-21
Classification: B65G,F04D

Abstract:
A gas medium bulk materials pump feeder comprising:a housing having: (a) an inlet, (b) an outlet, and (c) a substantially rigid inner wall extending from said inlet to said outlet; and a drive rotor having: (a) a hub rotatable about a rotation axis, and (b) a plurality of drive discs having circumferential edges extending away from said hub toward said inner wall of said housing, with the distance between the circumferential edges of said drive discs and said inner wall of said housing continuously increasing from said inlet of said housing to said outlet of said housing in the direction of rotation of said drive rotor, thereby providing a continuously increasing space between the circumferential edges of said drive discs and said inner wall of said housing; said inner wall of said housing, said drive discs, and said hub defining a materials transfer duct through which material is transferred from said inlet of said housing to said outlet of said housing; said pump configured and operable to pump bulk materials in a gas medium.