Famsun MY265 Operation Manual page 27

Fig.2-13 Button-type control box of the local panel of the manual control system
(3) Manual control pipeline system and its control
For the manual pipeline system, see Fig. 2-14. In manual pipeline system, all the
constant-proportional control valves, flow meters and pneumatic ball valves are gone, compared to
full-automated or semi-automated pipeline systems. Water addition to the extrusion barrel and
conditioner is the same as that in the semi-automatic pipeline system, as shown in Fig. 2-11.
The steam part of the manual pipeline system includes a steam manifold and associated
auxiliary facilities as well as steam pipeline to extrusion barrel, to jacket of the extrusion barrel, and to
the conditioner. Each of these three pipelines is not equipped with constant-proportional control valve,
flow meter or pneumatic ball valve but with a strainer and a pressure reducing valve.
Water and steam addition of the extruder system equipped with manual pipeline system is
implemented by manpower.
1. Water inlet 2.Steam to extrusion barrel
6.Steam to conditioner
In production, steam addition rate to the conditioner is primarily adjusted according to the
displayed value of the temperature at the conditioner outlet. While the steam addition rate to the
extrusion barrel is mainly managed by the expansion effect of the pellets. Therefore, operation of
3.Steam to jacket
7.Water outlet
Fig.2-14 Manual pipeline system
4.Pipeline for safety valve
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5.Steam main valve