Cooling device for plastic granulate

Details Cooling device for plastic granulate Cooling device for plastic granulate

1987-08-25

1989-07-25

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Immersed shaping orifice discharging directly into liquid...

264 38, 264142, 264180, 264237, 425 70, 425 86, B29D 3100, B29C 7100

Patent

active

048508357

ABSTRACT:
A cooling device for plastic granulate which is formed by cutting plastic strands emerging from a nozzle plate of an extruder and is fed to a stream of cooling water which adjoins the nozzle plate in the region of a cutting device. A pipe conducts the stream of cooling water containing the granulate to a granulate-water separator. In order to obtain a well-defined, infinitely adjustable dwell time of the granulate in the stream of cooling water, the pipe is essentially developed as a vertically arranged riser having a larger cross section passage area than that of the pipe itself. The upper outlet end of the riser is connected to the suction side of a feed pump, which serves as a section pump, and to a suction pipe which has an end connected to ambient atmosphere. A regulating valve is connected in the suction pipe. The delivery side of the feed pump communicates with the granulate-water separator.

REFERENCES:
patent: 3207818 (1965-09-01), Marshall
patent: 3988085 (1976-10-01), Krchma
patent: 4032271 (1977-06-01), Gasior
patent: 4251195 (1981-02-01), Suzuki et al.
patent: 4294784 (1981-10-01), Mailund
patent: 4385016 (1983-05-01), Gwinn
patent: 4606873 (1986-08-01), Biglione et al.
patent: 4666607 (1987-05-01), Josefiak et al.

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