Screw machine and method as well as processing installation for the processing of bulk material
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United States of America Patent
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Jun 27, 2017
Grant Date -
Nov 20, 2014
app pub date -
May 14, 2014
filing date -
May 15, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A processing installation for the processing of bulk material has a vacuum filter insert for degassing of the bulk material. The vacuum filter insert is arranged in a casing of a screw machine downstream of the feed opening thereof and is provided with at least one filter element so that the vacuum filter insert forms a gas-permeable wall portion which defines the at least one casing bore of the screw machine. Seen in a degassing direction, a protective element comprising a plurality of through-openings is arranged upstream of the at least one filter element. The protective element acts as a granule protection for the at least one filter element and prevents granular bulk material from damaging the at least one filter element. As a result, the vacuum filter insert has a longer service life, thus ensuring a long operating time for the processing installation without interruptions.
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