(19)
(11) EP 1 072 800 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
16.01.2002 Bulletin 2002/03

(43) Date of publication A2:
31.01.2001 Bulletin 2001/05

(21) Application number: 00115911.0

(22) Date of filing: 25.07.2000
(51) International Patent Classification (IPC)7: F04F 5/42, B07B 4/00
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 27.07.1999 JP 21265999
12.07.2000 JP 2000210883

(71) Applicant: NKK Plant Engineering Corporation
Yokohama-shi, Kanagawa-ken (JP)

(72) Inventors:
  • Aoki, Akio, c/o NKK Plant Engineering Corp.
    Yokohama-shi, Kanagawa-ken (JP)
  • Ishii, Mitsuo, c/o NKK Plant Engineering Corp.
    Yokohama-shi, Kanagawa-ken (JP)

(74) Representative: Henkel, Feiler, Hänzel 
Möhlstrasse 37
81675 München
81675 München (DE)

   


(54) Suction device and separator using same


(57) A suction device (1) utilizing a vortex flow of gas such as compressed air comprises a casing (5) having a conical body (9) formed with a conical inner peripheral surface having a small diameter side end to which a suction port is formed and at least one nozzle member (6) provided for the conical body so as to jet gas inside the conical body along the inner conical surface thereof as a vortex flow of gas. The suction device (1) may further comprise a cover member formed to the conical body (9) so as to cover a large diameter side end of the conical body, the cover member having a side portion to which a discharge port (10) is formed. The suction device is preferably utilized for a separator for selectively separating bags and films (3) from other rubbishes during the conveyance thereof on a conveyer (4).






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