Method for cleaning projectiles of shot blasting machine

Abstract

The invention discloses a method for cleaning projectiles of a shot blasting machine. The method is characterized in that in the working process of the shot blasting machine, the projectiles are sorted on line by adopting a filtering mode, and the projectiles with the size reduced after abrasion and a part of solid impurities mingled in the projectiles are sorted out; and meanwhile, after air is drafted from a working chamber of the shot blasting machine, dust removal treatment in a filtering mode is carried out by virtue of a dust removal bag. The method is capable of effectively and rapidly removing dust, realizing sorting while working, synchronously removing the projectiles with small diameter and the impurities, improving the shot blasting treatment effect and efficiency of the shot blasting machine, prolonging the service life and improving the working hygiene of the shot blasting machine and has the advantages of performing dust removal rapidly and efficiently, timely and reliably removing the impurities, avoiding blockage and the like.

Description

technical field [0001] The invention relates to the field of surface treatment equipment for metal parts, in particular to a method for cleaning projectiles of a shot blasting machine. Background technique [0002] Shot blasting machine is a casting equipment that uses high-speed projectiles ejected from a shot blasting device to clean or strengthen the surface of castings. The shot blasting machine hits the surface of the metal with one or more sand materials to remove some attachments on the metal surface, such as rust, or to obtain a specific surface layer through shot blasting impact. The shot blasting medium can be sand of various specifications, silicon carbide particles, small steel balls, etc. [0003] An existing shot blasting machine projectile cleaning method has the following structure: a shot blasting machine working room with a box structure, one side of the shot blasting machine working room is directly facing the room with a shot blasting device, and the cha...

AI Technical Summary

Problems solved by technology

[0005] This existing shot blasting machine device has the following defects: in the process of repeated recycling, the projectiles will be continuously worn, broken and thinned. To achieve the required surface treatment effect; at the same time, some fine impurities such as oxide skin on the surface of the workpiece will be knocked off during surface treatment, which will be mixed in the projectile, which will also reduce the surface treatment effect

But this method is cumbersome on the one hand, and on the other hand, it belongs to post-processing, which is not timely

[0006] In addition, when the shot blasting machine is working, it will generate a lot of dust when it hits the surface of the workpiece, which will easily affect the surface treatment effect of the workpiece and reduce the environmental sanitation after the dust leaks out.

In some shot blasting machines, a simple filter will be added to remove dust by filtering, but the dust removal efficiency is low and it is inconvenient to clean and replace the filter element frequently

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