Title:
SPIRAL CONVEYOR AND FILTER UNIT
Document Type and Number:
WIPO Patent Application WO/2022/059258
Kind Code:
A1
Abstract:
A filter unit 20 connected between a tray 2 and a discharging duct 6 of a spiral conveyor 10 in the present invention comprises: a first filter (perforated metal 37) that is fixed at a position close to the outer periphery of a conveying spiral 2; a second filter (mesh filter 43) that rotates on the outside of the conveying spiral and the first filter; and a washing nozzle 50 that sprays a washing liquid on the second filter. The chips captured by the first filter are scraped by the rotating conveying spiral and delivered back to the conveying path and the chips passing through the first filter but captured by the second filter are removed by the washing nozzle and delivered back to the conveying path. The washing liquid is sprayed at a predetermined angle from the washing nozzle and collides with vanes 46 arranged on the outer periphery of the second filter, thereby providing rotational force on the second filter.
Inventors:
MAEDA TAKAAKI (JP)
WATANUKI YOSHIO (JP)
WATANUKI YOSHIO (JP)
Application Number:
PCT/JP2021/019573
Publication Date:
March 24, 2022
Filing Date:
May 24, 2021
Export Citation:
Assignee:
TOKYO SEIMITSU HATSUJO CO LTD (JP)
International Classes:
B23Q11/00
Foreign References:
| JP3228029B2 | 2001-11-12 | |||
| JPH09201739A | 1997-08-05 | |||
| JPS56118709U | 1981-09-10 | |||
| JP2020171988A | 2020-10-22 | |||
| JP5433823B2 | 2014-03-05 | |||
| JP2018001400A | 2018-01-11 |
Attorney, Agent or Firm:
KUWABARA FUMIO (JP)
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