ABRASIVE-RECOVERY MECHANISM IN BLASTING MACHINE

• US 20090098810A1
• Filed: 09/26/2008
• Published: 04/16/2009
• Est. Priority Date: 10/12/2007
• Status: Active Grant

• Current Assignee: Fuji Manufacturing Co., Ltd.
• Original Assignee: Fuji Manufacturing Co., Ltd.
• Inventors: MASE, Keiji
• Granted Patent: US 7,695,348 B2
• Time in Patent Office: Days
• US Class Current: 451/88
• CPC Class Codes: B24C 9/00 Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material

Abstract

A bottom wall surface of a blasting chamber of a blasting machine provided with hoppers for recovering an abrasive is formed at a lowest possible position. A cabinet 3 of a blasting machine 1 is compartmentalized at a predetermined position into an upper space and a lower space by mesh members (21, 22) that allow the abrasive to pass therethrough to form a blasting chamber 2 having a bottom wall surface 20 defined by the mesh members (21, 22). Hoppers 10 substantially shaped like an inverted quadrangular pyramid are disposed below the mesh members (21, 22) such that top portions of the hoppers 10 are opened toward the mesh members (21, 22) and that the bottom end of each of the hoppers 10 is made to communicate with suction means, such as a dust collector, through a recovery pipe 30.

Claims

1. An abrasive-recovery mechanism in a blasting machine, comprising;

a cabinet in the blasting machine;

a mesh member dividing the cabinet into an upper space and a lower space, the mesh member capable of letting an abrasive pass therethrough;

a blasting chamber having a bottom wall surface defined by the mesh member; and

a plurality of hoppers each of which is substantially shaped like an inverted quadrangular pyramid, the plurality of hoppers being disposed below the mesh member,

wherein top portions of the plurality of hoppers are opened toward the mesh member, and bottom ends of the plurality of hoppers communicate with suction means through a recovery pipe.

2. The abrasive-recovery mechanism in a blasting machine according to claim 1, further comprising:

a gutter that is substantially W-shaped in cross section and is composed of two parallel grooves; and

dividing plates each of which is substantially shaped like an inverted triangle,

wherein the dividing plates are disposed in the two parallel grooves to form a set of two columns of the plurality of hoppers by defining and dividing a space in each of the two parallel grooves into an inverted quadrangular pyramid.

3. The abrasive-recovery mechanism in a blasting machine according to claim 2, wherein the set of two columns of the plurality of hoppers formed in the gutter and a recovery pipe that is attached to the gutter and communicates with the bottom end of each of the plurality of hoppers constitute a recovery unit such that a direction in which the plurality of hoppers are arranged is defined as a length direction, and

wherein the recovery unit comprises at least one recovery unit disposed below the mesh member.

4. The abrasive-recovery mechanism in a blasting machine according to claim 3, wherein the recovery pipe is a rectangle in cross section having a ratio of a long side to a short side of at least 1.5, and the bottom end of each of the plurality of hoppers is made to communicate with an interior of the recovery pipe at either end of the long side of the cross-section.

5. The abrasive-recovery mechanism in a blasting machine according to claim 4, further comprising a pipe for extending an aperture communicating between each of the plurality of hoppers and the recovery pipe, wherein a protrusion length at a bottom end of the pipe is set such that the pipe terminates at a space in the recovery pipe.

6. The abrasive-recovery mechanism in a blasting machine according to claim 2, further comprising a plurality of air introduction pipes for introducing external air into the recovery pipe, the plurality of air introduction pipes being arranged at regular intervals along the length direction of the recovery pipe.

7. The abrasive-recovery mechanism in a blasting machine according to claim 3, further comprising a plurality of air introduction pipes for introducing external air into the recovery pipe, the plurality of air introduction pipes being arranged at regular intervals along the length direction of the recovery pipe.

8. The abrasive-recovery mechanism in a blasting machine according to claim 4, further comprising a plurality of air introduction pipes for introducing external air into the recovery pipe, the plurality of air introduction pipes being arranged at regular intervals along the length direction of the recovery pipe.

9. The abrasive-recovery mechanism in a blasting machine according to claim 5, further comprising a plurality of air introduction pipes for introducing external air into the recovery pipe, the plurality of air introduction pipes being arranged at regular intervals along the length direction of the recovery pipe.

10. The abrasive-recovery mechanism in a blasting machine according to claim 3, further comprising switching means for sequentially connecting the recovery pipe to the suction means, for the recovery pipe of each recovery unit or the recovery pipes of a predetermined number of recovery units.

11. The abrasive-recovery mechanism in a blasting machine according to claim 4, further comprising switching means for sequentially connecting the recovery pipe to the suction means, for the recovery pipe of each recovery unit or the recovery pipes of a predetermined number of recovery units.

12. The abrasive-recovery mechanism in a blasting machine according to claim 5, further comprising switching means for sequentially connecting the recovery pipe to the suction means, for the recovery pipe of each recovery unit or the recovery pipes of a predetermined number of recovery units.