EPS pre expander machine

EPS pre expander machine guarantee a high degree of automation, reliable control and reproducibility as well as a uniformly foamed product. Together with simple operation, they bring calculable economic advantages.


Product Detail

FAQ

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Main Features

1.Feeding, expander, filtrating, crushing, transport to silos automatically

2.With first and second expansion, the first time filling adopt frequency conversion feeding device, guarantee the stability of feeding

3.Uniform foaming, foam density range is 6-35g/l

4.Material barrel inside and outside, fluidized bed dryer made of stainless steel, in order to maintain the durable use and stable performance

5.Electrical protection device

6.Adopt Japanese reducing valve

pre expander eps

Technical Data

Item  Type
PSY70 PSY90 PSY120
Expansion Chamber  Diameter Φ700mm Φ900mm Φ1200mm
 Volume 0.6m3 1.2m3 2.2m3
 Useable Volume 0.4m3 0.8m3 1.5m3
Steam Entry DN20 DN25 DN40
Consumption 80-100kg/h 100-150kg/h 150-200kg/h
Pressure 0.6-0.8MPa 0.6-0.8MPa 0.6-0.8MPa
Compressed Air  Entry DN15 DN20 DN20
 Pressure 0.6-0.8MPa 0.6-0.8MPa 0.6-0.8MPa
Drainage  Condensate Φ20mm Φ20mm Φ20mm
Throughput 15g/l 100kg/h 150kg/h 250kg/h
20g/l 120kg/h 200kg/h 300kg/h
25g/l 150kg/h 250kg/h 410kg/h
30g/l 200kg/h 300kg/h 500kg/h
Material Conveying Line  Φ150mm Φ150mm Φ150mm
Power  8.93Kw 9.73Kw 14.83Kw
Density  First expansion 12-30g/l 12-30g/l 14-30g/l
 Second expansion 8-11g/l 8-11g/l 8-13g/l
Overall Dimension L*W*H 4700*2660*2600 4700*2930*3200 4905*4655*3250
Weight  1300kg 1500kg 1800kg
Room Height Required  3000mm 3000mm 3000mm

Pre-foaming process

The EPS raw material is conveyed as granules to the pre-expander, where it is heated by means of wet steam. The hot steam softens the polystyrene beads and activates the blowing agent dissolved in them. This evaporates and causes the softened beads to expand.The bulk density can be adjusted by the weight of the raw material and the foamed volume. 

The EPS beads pre-expanded are then cooled and stabilized in a fluidized bed on an air cushion before being conveyed by blower via a rotary feeder into the silos.

 

Eps Bead Expander

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