EP0068095A2 - Centrifugeuse à poussoir - Google Patents

Centrifugeuse à poussoir Download PDF

Info

Publication number
EP0068095A2
EP0068095A2 EP82103444A EP82103444A EP0068095A2 EP 0068095 A2 EP0068095 A2 EP 0068095A2 EP 82103444 A EP82103444 A EP 82103444A EP 82103444 A EP82103444 A EP 82103444A EP 0068095 A2 EP0068095 A2 EP 0068095A2
Authority
EP
European Patent Office
Prior art keywords
floor
drum
sieve
sieve drum
feed pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP82103444A
Other languages
German (de)
English (en)
Other versions
EP0068095A3 (en
EP0068095B1 (fr
Inventor
Bruno Mülhaupt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sulzer Escher Wyss AG
Original Assignee
Sulzer Escher Wyss AG
Escher Wyss AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sulzer Escher Wyss AG, Escher Wyss AG filed Critical Sulzer Escher Wyss AG
Publication of EP0068095A2 publication Critical patent/EP0068095A2/fr
Publication of EP0068095A3 publication Critical patent/EP0068095A3/de
Application granted granted Critical
Publication of EP0068095B1 publication Critical patent/EP0068095B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B3/00—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering
    • B04B3/02—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering discharging solid particles from the bowl by means coaxial with the bowl axis and moving to and fro, i.e. push-type centrifuges

Definitions

  • the application relates to a pusher centrifuge with at least one sieve drum rotatably mounted in a housing and with a disk-shaped sliding floor arranged in and coaxially with the sieve drum, which is rotatable and can be moved back and forth between turning points relative to the sieve drum and for coating one Longitudinal section of the filter surface of the screen drum and for pushing a filter cake along the screen drum in the direction of discharge openings for the filter cake is provided.
  • Such push centrifuges are known for example from DE-AS 1 065 333.
  • the general advantages of the push centrifuge are associated with the disadvantage that the centrifuge can only be fed with relatively high solids concentrations. If the inlet concentration decreases, there is a risk of being washed up.
  • Flooding is the operating state when the drainage time between two strokes of the moving floor is not sufficient to drain the swamp in front of the moving floor to such an extent that the cake can be transported.
  • the sump is the longitudinal section of the screening drum that is swept by the moving floor. If the drainage is not sufficient, there is still a suspension in the swamp when the moving floor returns, which cannot be moved as a cake, which leads to the above-mentioned flooding.
  • the invention has for its object to provide a push centrifuge with which thin suspensions can be processed.
  • the turning points are preferably on both sides of the imaginary center line of the sieve drum and that a feed pipe is arranged coaxially to the feed drum for feeding the suspension to be separated, the outlet opening, pointing radially outwards, in the middle between is the two turning points of the moving floor, the moving floor having a central opening, which opens a passage through the feed pipe through the moving floor, so that the outflow opening of the feed pipe alternately at one or the other when the push floor is pushed back and forth relative to the outflow opening Side of the moving floor, and that there are discharge openings for the filter cake on both sides of the sieve drum.
  • the push centrifuge is provided with a washing device for washing the filter cake on the sieve surface of the sieve drum.
  • the push centrifuge as a two-stage centrifuge.
  • a screen drum 2 is rotatably mounted in a housing 1 of the pusher centrifuge.
  • a disc-shaped moving floor 4 which is rotatable and can be moved back and forth in the longitudinal direction between two turning points, 5 in FIG. 1 and 6 in FIG. 2, relative to the screening drum 2.
  • the push floor 4 sweeps a longitudinal section between the turning points 5 and 6 of the filter surface of the screening drum 2 and in each case moves a filter cake along the screening drum 2 in the direction of discharge openings 7, which are provided for the filter cake to be let out.
  • the sump which is designated here by 28.
  • the turning points 5 and 6 are preferably on both sides of the imaginary center line 3, in FIG. 1, the sieve drum 2, the push floor 4 thus oscillates in a longitudinal section of the sieve drum about this imaginary center line 3.
  • a feed tube 8 which is arranged coaxially with the sieve drum.
  • An outflow opening 9 of the feed pipe 8 lies in the middle between the two turning points 5 and 6 of the push floor 4 and points the flow of the suspension radially outwards, ie in the radial direction to the screen surface of the screen drum 2.
  • the push floor 4 has a central opening 10 that clears a passage for the feed tube through the moving floor as it reciprocates relative to the orifice.
  • the outflow opening 9 of the feed pipe 8 is alternately on one or the other side of the moving floor 4 when the pushing floor 4 is pushed back and forth relative to the outflow opening.
  • the inflow of the suspension to be separated is introduced into the sump 28, when the sieve bottom 4, after pushing the filter cake away to the next turning point has moved and thus exposed the longitudinal section of the filter surface, so that the liquid of the suspension, not hindered by any filter cake layer, is discharged through the sieve surface of the drum 2.
  • the filter cake is pushed along the screen drum 2 in both longitudinal directions.
  • To discharge the filter cake of the product from the sieve drum there are 2 discharge openings 7 for the product on both sides of the sieve drum.
  • the feed pipe 8 can be provided with a baffle plate to direct the flow in the radially outward direction, e.g. 1 and 2 can be seen at the end of the tube 8.
  • a baffle plate to direct the flow in the radially outward direction, e.g. 1 and 2 can be seen at the end of the tube 8.
  • the wall delimiting the central opening 10 in the moving floor 4 has a wedge-shaped cross section 11 which points against the direction of the flow direction of the suspension flowing out radially and for distributing the flow of the suspension serves.
  • a friction disc 12 or 13 arranged coaxially and parallel to the moving floor is attached to the moving floor 4 on both sides.
  • the attachment is provided by a few rods 24, which are each arranged between the moving floor and the respective friction disc 12 or 13.
  • the friction disk 13 attached to the side of the sliding floor 4 facing the feed pipe 8 is provided with a central opening 14 provided for the passage of the feed pipe.
  • the structure fastened together consisting of the sliding floor 4 and the friction disks 12 and 13, is supported, rotated and displaced by means of a shaft 25 which is fastened to the friction disk 12.
  • the screen drum 2 is overhung in the housing 1
  • the embodiment according to FIG. 6 shows storage on both sides of the screen drum 2 in the centrifuge housing 1.
  • a push centrifuge according to the invention can be built, in which the sieve drum has a cylindrical part 15 in the middle, which merges on both sides into a conical part 16 that widens in the direction of the discharge openings 7 on both sides of this sieve drum.
  • This screen drum is mounted on both sides in the housing.
  • the push floor 4 is slidably arranged along the cylindrical part 15.
  • the pusher centrifuge as shown in FIGS. 1, 2 and 5, is provided with a washing device 17 and 18 for washing the filter cake on the sieve surface of the sieve drum 2.
  • the washing device 17 has a body 21 which is built into the interior of the screening drum 2 and is fastened to the wall of the screening drum. Lines 22 lead through this body to nozzles 23, through which a washing liquid is thrown out in the direction of the filter cake on the sieve surface of the sieve drum 2.
  • the Washing liquid is fed through a line 19 and is passed into a channel 20 on the wall of the screening drum 2, from which the lines 22 lead to the nozzles 23.
  • the body 21 can, as is particularly clearly shown in FIG.
  • FIG. 1 A two-stage centrifuge according to the invention is shown schematically in FIG.
  • Two nested drum 2 1 and 2 2 forming a two-stage centrifuge are provided.
  • the outer screening drum 2 2 is rotatable by means of a shaft 26 which is attached to its end wall.
  • the structure consisting of the sliding floor 4 and the friction disks 12 and 13 is also fastened to this end wall by means of the rods 29.
  • the push floor 4 is arranged in the middle of the screening drum 2 2 .
  • the screening drum 2 1 is nested in the screening drum 2 2 and can be displaced axially relative to the latter.
  • oscillating displacement pull rods 27 are used, which lead through slots 30 in the screen drum 2 2 and are connected to the screen drum 2.
  • the structure of the moving floor 4 and the friction disks 12 and 13 rotates together with the sieve drum 2 2 and is axially immovable relative to the sieve drum 2 2 .
  • a relative displacement between the sliding floor 4 and the screening drum of the first stage 2 1 is achieved by moving this screening drum by means of the tie rods 27.
  • This longitudinally axial, oscillating displacement of the sieve drum 2 1 on the one hand transports the filter cake on the sieve surface of the sieve drum 2 1 , so that it is pushed onto the sieve surface of the sieve drum of the second stage 2 2 , and at the same time it is also along the sieve surface of the sieve drum the second stage 2 2 in the direction of the discharge openings 7, on both sides of the screening drum 2 2 , and falls there as a product.
  • the relative displacement between the outflow opening 9 of the feed pipe 8 and the sliding floor 4, which is arranged here axially axially immovable, that is to say remaining in its longitudinal axial position, is achieved by longitudinally axially, oscillating displacement of the feed pipe 8 1 .
  • the two displacements: the displacement of the sieve drum 2 1 relative to the moving floor 4 and the displacement of the feed pipe 8 1 relative to the moving floor 4 take place in the same cycle.

Landscapes

  • Centrifugal Separators (AREA)
EP82103444A 1981-06-25 1982-04-23 Centrifugeuse à poussoir Expired EP0068095B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4199/81 1981-06-25
CH4199/81A CH653573A5 (de) 1981-06-25 1981-06-25 Schubzentrifuge.

Publications (3)

Publication Number Publication Date
EP0068095A2 true EP0068095A2 (fr) 1983-01-05
EP0068095A3 EP0068095A3 (en) 1984-05-23
EP0068095B1 EP0068095B1 (fr) 1986-03-05

Family

ID=4271638

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82103444A Expired EP0068095B1 (fr) 1981-06-25 1982-04-23 Centrifugeuse à poussoir

Country Status (6)

Country Link
US (1) US4434052A (fr)
EP (1) EP0068095B1 (fr)
JP (1) JPS5845760A (fr)
CA (1) CA1169831A (fr)
CH (1) CH653573A5 (fr)
DE (1) DE3269565D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0635309A1 (fr) * 1993-07-22 1995-01-25 Sulzer-Escher Wyss AG Centrifugeuse à double poussoir
EP2959977A1 (fr) 2014-06-24 2015-12-30 Ferrum AG Centrifugeuse à poussoir double ainsi que système de plancher coulissant
EP2913112B1 (fr) * 2014-02-26 2020-06-17 Ferrum AG Centrifugeuse et procédé de chargement d'une centrifugeuse

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4010748A1 (de) * 1989-04-13 1990-10-25 Stahl Werner Verfahren zum betrieb einer schubzentrifuge
US5305685A (en) * 1993-05-04 1994-04-26 Bunn-O-Matic Corporation Grounds removal centrifuge
US5958235A (en) * 1997-08-22 1999-09-28 Baker Hughes Incorporated Continuous-feed filtering- or screening-type centrifuge with reslurrying and dewatering
KR102504657B1 (ko) * 2019-11-18 2023-02-27 주식회사 엘지화학 가압 원심 탈수기

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1065333B (de) * 1959-09-10 Gebr. Heine, Viersen (RhId.) Kontinuierlich arbeitende Siebzentrifuge mit einem gegenüber der Siebtrommel vor- oder nacheilend umlaufenden Boden
US1944391A (en) 1930-06-05 1934-01-23 Altpeter Ludwig Centrifugal
DE948409C (de) 1954-07-10 1956-08-30 Krauss Maffei Ag Einlaufvorrichtung fuer das Schleudergut in Schubzentrifugen
DE1044721B (de) 1956-04-04 1958-11-20 Krauss Maffei Ag Schubzentrifuge mit einer stufenfoermigen Siebtrommel
DE1092840B (de) 1959-03-18 1960-11-10 Karl Marx Stadt Maschf Schubzentrifuge
DE1114149B (de) * 1959-11-17 1961-09-21 Karl Marx Stadt Maschf Schubzentrifuge mit in beiden Hubrichtungen das Schleudergut austragendem Schubboden
DE1119774B (de) 1960-08-31 1961-12-14 Krupp Dolberg G M B H Schubzentrifuge mit Waschvorrichtung fuer das geschleuderte Gut
DE1151468B (de) * 1961-06-27 1963-07-11 Karl Marx Stadt Maschf Schubzentrifuge mit in beiden Hubrichtungen das Schleudergut austragendem Schubboden
JPS4531109Y1 (fr) * 1967-03-10 1970-11-28
DE2542916B2 (de) * 1975-09-26 1980-08-07 Siebtechnik Gmbh, 4330 Muelheim Zweistufige Schubzentrifuge
JPS608872B2 (ja) * 1976-02-13 1985-03-06 厚木機械株式会社 汚水中の夾雑物除去脱水装置
DE2631160A1 (de) 1976-07-10 1978-01-12 Erwin Biesinger Schleudervorrichtung, insbesondere zur nachbehandlung von noch fliessfaehigem filterschlamm
SU599853A1 (ru) 1976-08-11 1978-03-30 Государственный проектно-конструкторский институт "Гипромашуглеобогащение" Вибрационна центрифуга

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0635309A1 (fr) * 1993-07-22 1995-01-25 Sulzer-Escher Wyss AG Centrifugeuse à double poussoir
US5468389A (en) * 1993-07-22 1995-11-21 Sulzer-Escher Wysse Ag Double-acting pusher centrifuge
EP2913112B1 (fr) * 2014-02-26 2020-06-17 Ferrum AG Centrifugeuse et procédé de chargement d'une centrifugeuse
EP2959977A1 (fr) 2014-06-24 2015-12-30 Ferrum AG Centrifugeuse à poussoir double ainsi que système de plancher coulissant
CN105268562A (zh) * 2014-06-24 2016-01-27 弗鲁姆股份公司 双作用推料离心机及推料底座装置
US10363500B2 (en) 2014-06-24 2019-07-30 Ferrum Ag Double-action pusher centrifuge and pusher base device
CN105268562B (zh) * 2014-06-24 2019-11-29 弗鲁姆股份公司 双作用推料离心机及推料底座装置

Also Published As

Publication number Publication date
CH653573A5 (de) 1986-01-15
EP0068095A3 (en) 1984-05-23
CA1169831A (fr) 1984-06-26
EP0068095B1 (fr) 1986-03-05
DE3269565D1 (en) 1986-04-10
US4434052A (en) 1984-02-28
JPS5845760A (ja) 1983-03-17

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