Sieve arrangement for cleaning synthetic plastic melts

Details Sieve arrangement for cleaning synthetic plastic melts Sieve arrangement for cleaning synthetic plastic melts

1990-01-25

1992-02-25

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

With apparatus assembly or dismantling means or with idle part

Means permitting removal or substitution of elements during...

210108, 2103331, 425199, 425225, B29C 4768

Patent

active

050908871

ABSTRACT:
A sieve arrangement for cleaning synthetic plastic melts of a high pressure press has a housing having a throughflow opening which is arranged to form a part of a flow passage of a high pressure press, a disc provided with a plurality of perforations and movable in the housing so that at least one of the perforations is always in the region of the throughflow opening and at least one of the perforations is always outside the housing, a plurality of sieve discs arranged inside the perforations, a blockable spraying passage provided at the side of the throughflow opening which is located behind the disc as considered in a flow direction, a slot-shaped spraying nozzle associated with the perforation located away outside the throughflow opening and inside the housing so that the spraying passage opens into the spraying nozzle, an outlet passage provided in the housing at a side of the disc which is opposite to the spraying nozzle. The spraying passage or the opposite passage are provided with a blocking device which is synchronized with a drive of the disc, the spraying nozzle has a slot width which substantially corresponds to a value of a displacement cycle of the sieve discs.

REFERENCES:
patent: 2507591 (1950-05-01), Cox
patent: 4151086 (1979-04-01), Brooks
patent: 4174198 (1979-11-01), Kinoshita
patent: 4257901 (1981-03-01), Rapp
patent: 4271018 (1981-06-01), Drori
patent: 4332541 (1982-06-01), Anders
patent: 4486304 (1984-12-01), Neuman et al.
patent: 4619600 (1986-10-01), Gneuss
patent: 4752386 (1988-06-01), Schulz et al.
patent: 4755290 (1988-07-01), Neuman et al.

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