Projector and Blasting Machine

Abstract

Disclosed are a projector comprising an impeller rotated at high speed by a high-speed rotation driving device and a cover for covering the outer peripheral part of the impeller and having a projection material suction port and a projection material discharge port; and a blasting machine. In the projector, the entire of the impeller or the portion of the impeller with which the projection material is collided is formed of a high wear resistant rubber. It is possible to prevent the impeller and the projection material from damage, and to improve the durability of the projector. Furthermore, projection materials having high grinding property or those having fine particles and low specific gravity may also be used for the projector. Since the weight of the projector is light, it can be rotated directly by a motor at high speed and can be used under such conditions as ultra low temperature, ordinary temperature, high moisture, etc.

1 . A projector comprising an impeller, a high-speed rotating driving motor for high-speed rotating the impeller and a cover which covers a periphery of the impeller, wherein the cover has a projectile suction port and a projectile exhaust port therein, and further wherein an entire impeller or a portion of the impeller where a projectile strikes is formed of high abrasion-resistant rubber. 
   
   
       2 . The projector of  claim 1 , further comprising a disc flange and wherein the motor includes a drive shaft, the impeller being attached to the drive shaft through the disc flange. 
   
   
       3 . The projector of  claim 1 , wherein the high abrasion-resistant rubber is affixed to the portion of the cover where the projectile strikes. 
   
   
       4 . The projector of  claim 1 , wherein the impeller is comprised of:
 an impeller body comprising a discoid side panel in a central portion of which a projectile suction port is formed, a plurality of blades which are integrally formed in a radial pattern between the projectile suction port on inner surface and the periphery of the side plate, and other side plate integrally formed with the plurality of blades, a disk flange fitting hole being formed in central portion thereof;   a supporting plate mounted in such manner that it contacts with lateral surface of the side plate of the impeller body;   a disc flange which is attached to the drive shaft of the high-speed motor in such manner that it contacts with lateral surface of the other side plate of the impeller body; and   a plurality of spacing members which are attached at predetermined distance through shaft holes formed in the side plate and the other side plate in such manner that distance between the periphery of the disc flange and the supporting plate is kept constant.   
   
   
       5 . A shot blast machine comprising the projector of  claim 1 . 
   
   
       6 . The shot blast machine of  claim 5 , further comprising a disc flange and wherein the motor includes a drive shaft, the impeller being attached to the drive shaft through the disc flange. 
   
   
       7 . A shot blast machine comprising: the projector of  claim 1 , a support for supporting a workpiece, a housing enclosing the projector and the support; and a slurry pump which supplies projectile-mixed liquid to the projector. 
   
   
       8 . The shot blast machine of  claim 7 , wherein the projector further comprises a wheel cover for projectiving projectile-mixed liquid to a workpiece supported by the support, underside of the wheel cover being open and a nozzle-insertion hole is formed on a wall of suction-side and the impeller blades have high abrasion-resistant rubber fixed thereon.