Patent ID: 8882401

Claim:
A discharge apparatus for a powdered or granular material provided at a lower end of a storage part in which a powdered or granular material is stored, said apparatus comprising: a material discharge passage connected to said lower end of said storage part and provided with a material discharge port at a terminal end; a valve body opening or closing said discharge port of said material discharge passage, and a valve driving part moving said valve body along a substantially orthogonal direction to a surface of a valve seat around said discharge port; wherein said material discharge passage comprises: a first discharge passage provided substantially vertically and connected to said lower end of said storage part, and a second discharge passage provided obliquely downward, connected to said first discharge passage, and having said discharge port at the terminal end; said valve seat is formed in a shape of a substantially vertical surface so as to face a horizontal direction around an entire circumference of said discharge port; said valve body is constructed so as to move substantially horizontally to open or close said discharge port by said valve driving part, and to form a predetermined gap at a closed position between a surface, facing said valve seat, of a circumferential edge of said valve body and said surface of said valve seat along the circumferential direction of said discharge port, in which said gap is formed such that the powdered or granular material is not allowed to pass therethrough.