Suspension type damper unit, suction type powder collector, and air mixing suction type powder collector

1. A suspension type damper unit having a cover plate which is suspended with a suspension member at a material discharge port of a collection body so as to form a specified space for the material discharge port,

wherein said cover plate closes said material discharge port by receiving suction force by which powdered material is fed into said collection body and opens said material discharge port by receiving the weight of the powdered material when a specified amount of powdered material is stored in said collection body.

2. The damper unit according to claim 1 ,

wherein said material discharge port has an inclined lower edge and wherein said cover plate is suspended aslope along said lower edge.

3. The damper unit according to claim 1 ,

wherein a stopper member for regulating swing movement of said suspension member is provided in said material discharge port.

4. A suction type powder collector comprising a collector body having an air suction port, a material supply port and a damper unit provided at a material discharge port at the lower part of said collector body,

wherein said damper unit has a cover plate which is suspended with a suspension member at said material discharge port so as to form a specified space for said material discharge port, and

wherein said cover plate closes said material discharge port by the suction force by which powdered material is fed into said collection body and opens said material discharge port by the weight of the powdered material when a specific amount of powdered material is stored in said collection body.

5. The suction type powder collector according to claim 4 ,

wherein said material discharge port has an inclined lower edge and wherein said cover plate is suspended aslope along said lower edge.

6. The suction type powder collector according to claim 4 ,

wherein a stopper member for regulating swing movement of said suspension member is provided in said material discharge port.

7. An air mixing suction type powder collector comprising:

a material mixing chamber having an air suction port at its upper part and a material discharge port at its lower part, a material storage chamber and a communicating pipe for connecting said material mixing chamber to said material storage chamber, in which a damper unit is provided at said material discharge port and a powdered material fed through said material supply port by suction force acting on the air suction port is stored by the specified amount in said material mixing chamber while the powdered material is mixed with air in said material mixing chamber and thereafter is transferred into said material storage chamber by opening said damper unit, and

wherein said damper unit has a cover plate which is suspended with a suspension member at said material discharge port of said material mixing chamber so as to form a specified space for said discharge port, and

said cover plate closes said material discharge port by the suction force by which powdered material is fed into said collection body and opens said material discharge port by the weight of the powdered material when a specific amount of powdered material is stored in said collection body.

8. The air mixing suction type powder collector according to claim 7 ,

wherein said material discharge port has an inclined lower edge and wherein said cover plate is suspended aslope along said lower edge.

9. The air mixing suction type powder collector according to claim 7 ,

wherein a stopper member for regulating swing movement of said suspension member is provided in said material discharge port.