Global patent index - EP 1056904 A2

EP 1056904 A2 2000-12-06 - SOLID BOWL CENTRIFUGE FOR MIXTURES, ESPECIALLY FOR FIBROUS MATERIAL SUSPENSIONS USED IN THE PAPER INDUSTRY

Title (en)

SOLID BOWL CENTRIFUGE FOR MIXTURES, ESPECIALLY FOR FIBROUS MATERIAL SUSPENSIONS USED IN THE PAPER INDUSTRY

Title (de)

VOLLMANTEL-ZENTRIFUGE FÜR GEMISCHE, INSBESONDERE FÜR FASERSTOFFSUSPENSIONEN IN DER PAPIERINDUSTRIE

Title (fr)

CENTRIFUGEUSE A ENVELOPPE PLEINE POUR MELANGES, EN PARTICULIER POUR SUSPENSIONS DE MATIERES FIBREUSES UTILISEES DANS L'INDUSTRIE DU PAPIER

Publication

EP 1056904 A2 (DE)

Application

EP 99927569 A

Priority

  • DE 19800653 A
  • EP 9900114 W

Abstract (en)

[origin: DE19800653A1] The invention relates to a solid bowl centrifuge (1) for multiphase mixtures, preferably three-phase mixtures, which is especially meant for fibrous material suspensions used in the paper industry. The solid bowl centrifuge (1) has a housing (2) and a rotor (7) which is provided for separating the multiphase mixture into a light, middle and heavy fraction. At least one orifice (41) situated in the bowl of the rotor (7) is provided for conveying the heavy fraction out. A conveying device (51) is arranged in a chamber (43) between the outer wall (24) of the rotor (7) and the housing (2). Said conveying device conveys a blocking medium into the chamber (43) with at least the pressure prevailing there and in a direction of at least one orifice (41) provided for the heavy fraction.

IPC 1-7 (main, further and additional classification)

D21D 5/22; B04B 1/00

IPC 8 full level (invention and additional information)

B04B 1/00 (2006.01); D21D 5/22 (2006.01)

CPC (invention and additional information)

B04B 1/00 (2013.01); D21D 5/22 (2013.01)

Citation (search report)

See references of WO 9935331A3

Designated contracting state (EPC)

AT CH DE ES FI FR GB IT LI SE

EPO simple patent family

DE 19800653 A1 19990715; CA 2317528 A1 19990715; EP 1056904 A2 20001206; WO 9935331 A2 19990715; WO 9935331 A3 19990910

INPADOC legal status

2002-11-06 [18R] REFUSED

- Ref Legal Event Code: 18R

- Effective date: 20020614

2002-01-30 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20011218

2000-12-06 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000803

2000-12-06 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT CH DE ES FI FR GB IT LI SE