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3. Functional description
3.1 Overview
79 granulators are designed for grinding different types of plastic waste.
The granulator is controlled from an electrical cabinet with a start/stop function
and an emergency stop button.
The material is fed into the hopper (A) and falls down to the rotor. The rotor’s
knives (B) grind the material against the fixed knives (C) in the cutter housing.
Both the fixed and rotating knives can be changed or re-sharpened when
necessary. The sharpening is carried out in a special fixture outside of the
granulator.
Under the rotor is a screen (D) through which the granulate passes before it
comes down into the granule bin. The screen is available with various hole sizes
depending on the required degree of coarseness of the granulate.
The granulated material is then collected in the granule bin (E). The standard -L
model is fitted with a suction pipe. The -LBU is fitted with a suction blower
which sucks the granulate out of the granule bin. The -LBV is fitted with an
ejector (air veyor).
The granule bin, screen and screen box are designed to be removed so that the
rotor can easily be cleaned. The hopper is constructed so that it can be opened
up to allow improved access for cleaning and maintenance.
79
C
D
E
A
E
D
B
A
C
B
79