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SPCL36104-S Suction System
4.4
(N/A) VIBRATORY CLASSIFIER (SCREENER)
The purpose of a Vibratory Classifier is to have more control over the media that is reclaimed
from the blast process and put back into the Storage Hopper. When media “breaks down” as
a result of hitting the part being blasted, it may change shape (deform), and it may fracture,
resulting in smaller particles of media. Consequently, what is often found in the Storage
Hopper consists of a combination of properly sized media particles, undersized media
particles, virgin media from the Makeup Hopper, material that has been removed (e.g.
cleaning or surface-etching processes) from the part being blasted and possibly dust.
Contaminants such as dust and particles dislodged from the part being blasted are usually
carried over to the Dust Collector by the cyclonic Reclaimer, which is better than 90%
efficient. However, small amounts may wind up in the Storage Hopper. These contaminants
plus undersized media particles may reduce the efficiency of the blasting process. Blast
processes that require very precise control of the media often include a Vibratory Screener,
which is practically 100% efficient. A series of mesh “screens” located on successive “decks”
sequentially filter the material that is removed from the Blast Cabinet. Dust and undersized
media particles are removed and dumped into a waste drum and good reusable media is sent
to the Storage Hopper.
4.5
(N/A)FRONT ACCESS PRESSURE REGULATOR
This option allows the operator to monitor and/or change the Blast Pressure from the front of
the Blast Cabinet.
