Global Patent Index - EP 1065310 A1

EP 1065310 A1 2001-01-03 - Hydrocyclone for removing impurities from a liquid

Title (en)

Hydrocyclone for removing impurities from a liquid

Title (de)

Hydrozyklon zum Entfernen von Störstoffen aus einer Flüssigkeit

Title (fr)

Hydrocyclone pour enlever des contaminants d'un liquide

Publication

EP 1065310 A1 (DE)

Application

EP 00113319 A

Priority

DE 19930088 A

Abstract (en)

The hydrocyclone (1), to separate foreign matter (S) from a liquid (F), has at least one inlet (3) for the liquid (F) to be cleaned, at least one outlet for the cleaned fluid (G) and at least one outlet (5) for the rejected matter (S), with at least one zone (2) subject to blockage. At least part of the outer wall of the hydrocyclone (1) has a colored layer (9) which changes its appearance according to temp. The outlet (5) for rejected matter takes out heavy and light particles. The colored layer (9), which changes its color on heating/cooling, is near the outlet (5) for rejected matter or in the channel which carries the foreign matter (S) away from the hydrocylone. The layer (9) changes color at temps. of 25-40 degrees C, as a film which is bonded in place by an adhesive. The dimensions of the outlet (5) for rejected matter can be changed by a setting unit (8).

Abstract (de)

Der Hydrozyklon dient dem Entfernen von Störstoffen aus einer Flüssigkeit (F), deren Temperatur von der Umgebungstemperatur abweicht. Solche Hydrozyklone werden üblicherweise bei der Reinigung von Faserstoffsuspensionen eingesetzt, insbesondere wenn diese aus Altpapier hergestellt sind. Sie können einen verstopfungsgefährdeten Bereich (2) aufweisen, in dem sich die auszuscheidenen Störstoffe (S) ansammeln. Erfindungsgemäß wird in dem verstopfungsgefährdeten Bereich (2) die Temperaturänderung mit Hilfe einer Farbschicht (9) sichtbar gemacht, da sie ein Indikator für das Auftreten von starken Ansammlungen von Störstoffen ist. Es können dann Maßnahmen zur Entfernung der Ansammlung vorgenommen werden. <IMAGE>

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

D21D 5/24; B04C 11/00

IPC 8 full level (invention and additional information)

B04C 11/00 (2006.01); D21D 5/24 (2006.01)

CPC (invention and additional information)

D21D 5/24 (2013.01); B04C 11/00 (2013.01)

Citation (search report)

[DA] CH 681360 A5 19930315 - TILL GRETHER

Designated contracting state (EPC)

AT DE FI FR SE

EPO simple patent family

DE 20011019 U1 20000928; AT 258248 T 20040215; DE 19930088 A1 20010118; DE 19930088 C2 20021121; EP 1065310 A1 20010103; EP 1065310 B1 20040121; US 6398969 B1 20020604

INPADOC legal status


2006-03-31 [REG FR ST] NOTIFICATION OF LAPSE

- Effective date: 20060228

2006-02-28 [PG25 FR] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: FR

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20060228

2006-02-21 [EUG] SE: EUROPEAN PATENT HAS LAPSED

2006-01-03 [PG25 DE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: DE

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20060103

2005-06-24 [PG25 SE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: SE

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20050624

2005-06-23 [PG25 AT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: AT

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20050623

2005-06-14 [PG25 FI] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: FI

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20050614

2005-01-12 [26N] NO OPPOSITION FILED

- Effective date: 20041022

2004-09-24 [ET] FR: TRANSLATION FILED

2004-07-09 [PGFP DE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: DE

- Payment date: 20040709

- Year of fee payment: 5

2004-06-23 [PGFP AT] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: AT

- Payment date: 20040623

- Year of fee payment: 5

2004-06-23 [PGFP FI] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: FI

- Payment date: 20040623

- Year of fee payment: 5

2004-06-22 [PGFP SE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: SE

- Payment date: 20040622

- Year of fee payment: 5

2004-06-18 [PGFP FR] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: FR

- Payment date: 20040618

- Year of fee payment: 5

2004-05-11 [REG SE TRGR] TRANSLATION OF GRANTED EP PATENT

2004-02-26 [REF] CORRESPONDS TO:

- Document: DE 50005067 P 20040226

2004-01-21 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): AT DE FI FR SE

2001-09-19 [AKX] PAYMENT OF DESIGNATION FEES

- Free text: AT DE FI FR SE

2001-08-29 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20010703

2001-04-04 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: VOITH PAPER PATENT GMBH

2001-01-03 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT DE FI FR SE

2001-01-03 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI