AEC Colortronic MSH Series 2039 - Manual (Page 10)

C Series Granulators Functional Description 10 of 53
2-3 Typical Features and Components
Hopper
The hopper is a hinged, upright, enclosure with sound dampening. It tilts completely out of
the way for unobstructed access to the cutting chamber. It is designed to facilitate feeding of
material to the rotary knives and to prevent chips thrown from the cutting chamber from
reaching the operator.
Cutting Chamber
The cutting chamber is a rectangular enclosure comprising the main frame, the bed knives,
the bed knife shields, a balanced rotor, and a screen.
The main frame of the cutting chamber carries the bed knives and the bed knife shields. Both
the bed knives and shield are adjustable, and the bed knives have reversible cutting edges for
extended life.
The internal surfaces of the solid steel cutting chamber are machined to an exceptionally
smooth finish for ease of clean-out. The scissor-type cutting action of the chevron rotary
knives gives optimum cutting efficiency with low power consumption.
The screen is mounted in a swing-down cradle, positioned just below the rotor and acts as a
separating barrier to the granulated material, retaining the material in the cutting chamber
until the particle size is such that it will pass through the screen holes.
The open-type, high-alloy steel rotor carries the rotary knives. High-strength alloy steel
screws are used for attachment of all knives.
Drive System
The drive system consists of a TEFC 1800 RPM motor set on an adjustable sliding base that
is mounted at the right side of the granulator. A belt guard shields the motor drive sheave,
rotor sheave and belts.
Discharge System
The granulated material that has fallen through the screen is collected in a transition piece
located beneath the cutting chamber. The transition piece is connected to a blower, which
conveys the granulated material through ducting to the cyclone separator. The cyclone
separator allows the granulated material to drop out of the air system into a container.
Base
The base is a floor mounted airveyor type supporting the cutting chamber on its top surface
and the airveyor chute from below the top surface. This base should be fastened securely to
the surface beneath it.