UNDERWATER PELLETIZER, for rigid and soft PP max MFI : 30 (and more),
electrical heater max 14,6 kW, n.2 thermo regulating zones, A pressure
transducer and a melt temperature transducer are mounted on the purge
valve. The purge valve is controlled by a hydraulic cylinder connected
to a hydraulic power unit with a 2.2 kW motor., Steel die with brazed
tungsten carbide plates. A conveyor cone for the molten polymer is
installed inside., stainless steel granulation chamber, Impeller shaft
with 11 kW 2-pole drive motor (3000 rpm nominal, 4000 rpm max)
controlled by an inverter with rpm variation and speed readout on the
panel. The shaft output side has special seals and a labyrinth and
safety water drainage to protect the motor bearings. The impeller
motor is integral with a slide sliding on rolling guides, operated,
via a recirculating ball screw, by a manual handwheel equipped with a
position indicator and lever lock. The operator, by turning the
handwheel, identifies the optimal thrust of the blades against the die
and locks the system in position by turning the lever. When the blade
wear is such as to cause a pre-set reduction in the torque required
from the motor (measured by the inverter), an audible alarm will
prompt the operator to turn the handwheel again. - Impeller motor and
granulation chamber are clamped against the die by means of a
quick-release clamp with jaws on, Conical flanges and safety
microswitches with mechanical delay. The granulation unit is mounted
on a trolley that slides on rails., GRANULE SEPARATION and DRYIGN
GROUP with water collection tank with thermostat, A sequence of 3
grooved stainless steel pipes, connected with Victaulic joints,
connects the granulation chamber to the separation unit. The length of
the path can vary based on the polymer being processed., A bypass
circuit with pneumatically operated ball valves allows the exact
moment at which the process water reaches the granulation chamber to
be determined. Appropriately synchronized with the melt diverter valve
(or purge valve), it prevents freezing and subsequent blockage of the
die holes, as well as the risk of agglomerates forming around the
blade impeller., Agglomerate catcher with round bar grid for the
interception of agglomerates and dewatering at the centrifuge entrance
in perforated sheet metal for water drainage, both made of stainless
steel, Ø 450 mm. vertical centrifuge, easily inspected, ventilated in
counter-current to the pellet flow, built in stainless steel.
Centrifugal motor power 5.5 kW (plus 1.1 kW of the suction fan) -
inclined granule discharge manifold with OK connection compatible with
piping for solid transport - stainless steel water collection tank
with inclined bottom for easy cleaning, with thermoregulation, power
up to 45 kW (15, 30, 45 kW), complete with double drawer filter with
manual cleaning for collecting fines - 4.5 kW water delivery pump,
Water-water heat exchanger with removable stainless steel tube bundle,
Painted carbon steel support structure, Accessories necessary for the
proper functioning of the machine, N.1 thick tempered glass sight
glass installed at the outlet of the granulation chamber -
pneumatically operated stainless steel water valve with 2” gas
position microswitch - air treatment unit (air pressure reducer with
water filter and lubricator), - air pressure switch, - pressure
transducer acting as a minimum and maximum water level switch in the
tank, inlet solenoid valve for automatic water replenishment, -
flowmeter for measuring and controlling the flow of process water, -
solenoid valve at the inlet of the heat exchanger secondary circuit,
controlled by a thermoregulator to maintain a constant temperature of
the process water, - pipe support structure made of painted carbon
steel, junction boxes and various accessories, No. 1 electrical panel
for the control and command of utilities with PLC, Important notice :
this pelletizer works with a constant material flow. Falls of pressure
from screen-changer will reduce the performances., availability: 4-5
months from order confirmation, capacity: 1400-1700 kg/h, conditions:
new machine, type: underwater pelletizer
Italien
ponderano 
