2.2.1 STM-W (single heating tank) Working Principle
High temperature water returns to the machine and then be pressured by
pump to the heaters. After being heated, water will be forced to mould and
continue the circle. In the process, if the temperature is too high, the system
will activate the solenoid valve to let cooling water cool down the temp. directly
until the water is down to the system requirement. If the temp. keep increasing
and reach to the set point of EGO, system will alarm and stop operation. The
system will have low pressure alarm and stop working if cooling water pressure
doesn reach set point.
The STM-W series of standard water heaters are used to heat up the
mould and maintain this temperature. Besides, they can also be used in
other similar applications. High temperature water from the mould is cooled
by direct cooling and then sent to the pipe heaters via high-pressure pump
for heating to a constant temperature. With our optimised design, water can
o
reach a maximum of 120 C and the OMRON temperature controller can
o
maintain an accuracy of 1 C.
EGO
Cooling water outlet
To mould
Pressure meter
From mould
Cooling water inlet
Pressure switch
Pump
Filter
Thermal sensor
Solenoid valve
Heater
Mould
Ball valve
Ball valve
Ball valve
2.1 Main Functions
Structure characteristics and working principle
2. Structure Characteristics and Working Principle
2.2 Working Principle
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