EP0635309B1 - Doppelschubzentrifuge - Google Patents
Doppelschubzentrifuge Download PDFInfo
- Publication number
- EP0635309B1 EP0635309B1 EP93810529A EP93810529A EP0635309B1 EP 0635309 B1 EP0635309 B1 EP 0635309B1 EP 93810529 A EP93810529 A EP 93810529A EP 93810529 A EP93810529 A EP 93810529A EP 0635309 B1 EP0635309 B1 EP 0635309B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sliding
- double
- floor device
- mixture
- centrifuge according
- 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.)
- Expired - Lifetime
Links
- 239000000203 mixture Substances 0.000 claims description 31
- 239000012065 filter cake Substances 0.000 claims description 27
- 239000007788 liquid Substances 0.000 claims description 14
- 238000005406 washing Methods 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 8
- 238000012216 screening Methods 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
Images
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 invention relates to a double-push centrifuge a rotating screen drum to separate from Mixture in liquid and solid content in the form of To make filter cake with a centrally arranged Moving floor device, which extends along the axis of the Sieve drum reciprocates around the filter cake alternately with an outer ring area push away, and with a central feed unit, to feed new mixture into empty spaces, which are behind the returning outer ring area arise.
- Double push centrifuges have the advantage that during the Ejection movement that the moving floor device into a Direction to eject the filter cake on the On the back of the moving floor there is an empty space on the sieve drum arises in the fresh mixture for filtration can be fed.
- EP 0 068 095 shows double push centrifuges with a central through hole on the Moving floor device, its edge as a control edge is used to inevitably depending on the Position the moving floor of the mixture from a stationary radial feed to the front or back to switch.
- the object of the invention is the distribution of mixture to simplify in double push centrifuges. This task is solved in that on both sides in the outer Ring area of the moving floor device several axial Passages are attached, each of the Center via associated radial feed openings are feedable within the moving floor device and which divert the mixture on both sides in the axial direction, to counter the ejection movement of the Moving floor device towards that side of the drum on which the moving floor of the filter cake is currently runs away.
- the invention has the advantage that the axial distribution of the mixture directly in the pressure field on the surface the sieve drum through the axial openings takes place by the radially entering mixture according to the different from the filter cake limited outlets on the side, that runs away from the filter cake.
- the state of the Filter cake on the moving floor therefore inevitably controls the Distribution of the mixture, while by the individual radial feeding of several axial Through openings ensure that the mixture the same in the openings Has peripheral speeds and pressures.
- the radial Feed openings branch off from an annular space, which despite its axial movement from the central Feed unit can be easily supplied with a mixture.
- a breakthrough in the axis of the Moving floor equipment can only be used for Passage of rinsing and washing liquid used if, for example, a support tube is the central one Feed device penetrates and to the rear area has a deflector. This creates a simple one non-clogging infeed system and more space for one Product washing on the back of the drum. It offers itself there is enough space for you with the moving floor moving but to this axially adjustable ring channel, the rinsing and washing liquid to the filter cake distracts and accelerates.
- the axial Through openings in the outer ring area of the Moving floor can be designed quite differently.
- the two walls of which the Form common annulus, spiked can be used be a distribution on the axial Make openings. If the axial Through openings to the periphery are open, then the intermediate webs must be kept wider by one same ejection effect on the filter cake as an outer one Ring surface with a closed circumferential band to reach.
- the ejection effect on To make filter cake adaptable and on the other hand the axial outlet height for the mixture of the axial Through openings opposite the inner surface the sieve drum are adjustable Wear rings can be attached in the outer ring area.
- Moving floor Another way to create a double wall Moving floor consists of the actual moving floor axial through holes and their radial Milling feed openings in the form of channels, whereby a cover that is attached later covers the channels and at the same time forms this common annulus.
- Such milled channels have the advantage, that they are opposite the center of an annular gap section Direction of rotation can be advanced to the axial Passage opening more evenly over their share of Apply volume to mixture.
- a screening drum 6 is on one side via bearings 24 stored in a housing 1, which in a middle Area that was centrifuged with the sieve drum 6 Intercepts liquid 39 in a filtrate housing 4 while the filter cake 14, 15 from an axially oscillating Moving floor device 5 each along the Drum shell surface to the outside in a corresponding Solid housing 3 are pushed.
- On the warehouse side are several outlet openings 22 for the rear Filter cake 14 attached in the sieve drum.
- the Moving floor device 5 itself is via bolts 26 and one Thrust hub 25 connected to a piston rod 23, the in turn in the axis 9 of the sieve drum axially is movably mounted to rotate with the Sieve drum 6 an axially oscillating movement make the actual moving floor at his Periphery is transferred to the filter cake 14, 15.
- the housing 1 is closed with a housing cover 2.
- a feed unit 11 is in shape on the housing cover a pipe for a mixture 17 attached, which coaxially from a support tube 20 at its outlet is pierced, the support tube having a deflector 33 carries, which deflects the mixture 17 in the radial direction.
- the Support tube 20 is reached through a central opening 34 in the moving floor device 5 the rear room Sieve drum 6 and allows one or more internal pipes 19, washing and / or washing liquid 21 in the back room.
- FIGs 2, 3 and 4 is an embodiment of the Moving floor device 5 can be seen in the by one an annular space 18 on the front cover 29 A plurality of radial feed openings 13 is produced merge into axial passage openings 12, which in an outer ring area 10 of Moving floor device 5 in the area of the filter cake 14, 15 are arranged.
- the Moving floor device 5 becomes mixture 17 in the area between the front edge of the lid and the actual one Moving floor introduced radially and further via the friction accelerated on the walls in an annular space 18 in which Baffles in the form of pockets 28 are attached to the Mix in pockets 28 to peripheral speed bring.
- the sieve drum consists of its Shell surface from a sieve 7, which is from a open support cylinder 8 is held.
- the mixture 17 tries axially and in both directions Circumferential direction at the exit from the passage openings 12 distribute, being on the side towards the Ejection movement 27 of the to be extended Filter cake 14 opposes while on the opposite side, an empty space 16 is formed in the the mixture 17 for separation from the liquid portion can flow in. After the reversal of movement the now settled solid content with the subsequent filter cake by not quite a stroke length ejected, while on the back solid content is deposited.
- FIG. 4 shows axial passage openings 12, which occupy an entire annular gap section 30 in order to in the circumferential direction a good level compensation for the To reach filter cake 14, 15.
- the Lid 29 is supported in the actual moving floor a puncture 31 with one shoulder, the same time in the area of the pockets 28 there is a limitation for the radial ones Feed openings 13 forms.
- In the area of the axial Passage openings 12 are annular on both sides Punctures attached in the corresponding to FIG. 9 Wear rings 38 can be used.
- FIG. 5 and 6 is a double-walled Moving floor device 5 shown as a welded construction, in which the feed unit 11, the mixture 17 in the Feeds in the middle of a hollow moving floor.
- the two Sidewalls are on their periphery about one End tape 35 connected.
- the axial Passage openings 12 are separated from one another by spikers 36 separately, the spit 36 simultaneously the radial Form feed openings 13 from the annular space 18.
- On the Bolt 26 is a funnel-shaped ring channel 37 for Washing liquid 21a in different axial positions fixable to the in the rear space of the drum 6 Tube 19 and the support tube 20 introduced washing liquid to collect and distribute.
- Rinsing liquid 21b in the rear space of the sieve drum 6 be given up to remove the filter cake 14 and to clean the screen surface 7.
- Figures 7 and 8 is a welded construction shown analogously to Figures 5 and 6, in which the outer Graduation tape was left out.
- the axial Through openings 12 are open towards the sieve, so that care must be taken to ensure that the distance between two spits 36 is small enough to eject one to obtain a continuous ring shape of the filter cake 14, 15.
- Figure 9 shows a section of the moving floor 5 with put on wear rings 38.
- Wear rings can wear from the Through openings 12 are kept away. It is also possible, the axial outlet height the product properties adapt.
- the lock ring can be made as a whole or made of several radially displaceable segments be. The can be designed as movable segments radial overflow height can be adjusted continuously.
Landscapes
- Centrifugal Separators (AREA)
Description
- Fig. 1
- schematisch einen Längsschnitt durch eine Doppelschubzentrifuge;
- Fig. 2
- schematisch die Ansicht einer Schubbodeneinrichtung mit axialen Durchtrittsöffnungen und radialen Anspeiseöffnungen in Form von Taschen;
- Fig. 3
- schematisch einen Längsschnitt durch eine Schubbodeneinrichtung entsprechend Fig. 2, bei der ein Deckel zur Bildung eines Ringraums und zur Abdeckung der Taschen vorgesehen ist;
- Fig. 4
- einen vergrösserten Ausschnitt des eigentlichen Schubbodens aus Fig. 3 an seiner Peripherie zur Siebtrommel;
- Fig. 5
- schematisch die Ansicht einer doppelwandigen Schubbodeneinrichtung, die ein Abschlussband zur Siebtrommel aufweist;
- Fig. 6
- schematisch einen Längsschnitt durch eine Schubbodeneinrichtung entsprechend Fig. 5 mit einem axial verschiebbaren Ringkanal zum Auffangen und Verteilen von Waschflüssigkeit;
- Fig. 7
- schematisch die Ansicht einer doppelwandigen Schubbodeneinrichtung, deren axiale Durchtrittsöffnungen zur Siebtrommel hin offen sind;
- Fig. 8
- schematisch einen Längsschnitt durch eine Schubbodeneinrichtung entsprechend Fig. 7; und
- Fig. 9
- einen Ausschnitt eines eigentlichen Schubbodens entsprechend Fig. 4, bei dem Verschleissringe eingesetzt sind.
Claims (10)
- Doppelschubzentrifuge mit einer rotierenden Siebtrommel (6), um eine Trennung von Gemisch (17) in Flüssigkeit (39) und Feststoffanteil (40) in Form von Filterkuchen (14, 15) vorzunehmen, mit einer mittig angeordneten Schubbodeneinrichtung (5), die sich längs der Achse (9) der Siebtrommel (6) hin- und herbewegt, um die Filterkuchen (14, 15) wechselseitig mit einem äusseren Ringbereich (10) wegzuschieben, und mit einer zentralen Einspeiseeinheit (11), um neues Gemisch (17) in Leerräume (16) einzuspeisen, welche hinter dem zurücklaufenden äusseren Ringbereich (10) entstehen, dadurch gekennzeichnet, dass beidseitig im äusseren Ringbereich (10) der Schubbodeneinrichtung (5) mehrere axiale Durchtrittsöffnungen (12) angebracht sind, welche jeweils vom Zentrum her über zugehörige radiale Anspeiseöffnungen (13) innerhalb der Schubbodeneinrichtung (5) anspeisbar sind und welche das Gemisch (17) beidseitig in axiale Richtung umleiten, um es entgegen der Ausstossbewegung der Schubbodeneinrichtung (5) auf diejenige Trommelseite zu leiten, auf der der Schubboden vom Filterkuchen momentan wegläuft.
- Doppelschubzentrifuge nach Anspruch 1, dadurch gekennzeichnet, dass die radialen Anspeiseöffnungen (13) innerhalb der Schubbodeneinrichtung (5) von einem gemeinsamen Ringraum (18) abzweigen, welcher von der zentralen Einspeiseeinheit (11) mit Gemisch (17) belieferbar ist.
- Doppelschubzentrifuge nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Schubbodeneinrichtung (5) im Zentrum einen Durchbruch (34) für ein ortsfestes Stützrohr (20) aufweist, in dem mindestens ein axial verschiebbares Rohr (19) das Einbringen von Wasch- und/oder Spülflüssigkeit erlaubt.
- Doppelschubzentrifuge nach Anspruch 3, dadurch gekennzeichnet, dass das Stützrohr (20) die zentrale Einspeisevorrichtung (11) durchdringt und mindestens einen Abweiser (33) für Gemisch (17) am Durchbruch (34) innerhalb der Schubbodeneinrichtung aufweist.
- Doppelschubzentrifuge nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Durchtrittsöffnungen (12) im äusseren Ringbereich (10) die Form von Ringspaltabschnitten (30) aufweisen.
- Doppelschubzentrifuge nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, dass der Ringraum (18) aus einer doppelwandigen Schubbodeneinrichtung (5) gebildet ist.
- Doppelschubzentrifuge nach Anspruch 6, dadurch gekennzeichnet, dass die Schubbodeneinrichtung (5) im äusseren Ringbereich (10) doppelwandig und mit einem Abschlussband (35) ausgebildet ist.
- Doppelschubzentrifuge nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, dass der Ringraum (18) durch einen in der Schubbodeneinrichtung (5) aufgesetzten Deckel (29) gebildet ist.
- Doppelschubzentrifuge nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass Verschleissringe (38) im äusseren Ringbereich (10) anbringbar sind, mit denen die axiale Austrittshöhe aus den axialen Durchtrittsöffnungen (12) gegenüber der inneren Mantelfläche der Siebtrommel einstellbar ist.
- Doppelschubzentrifuge nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass parallel zur Schubbodeneinrichtung (5) ein axial verschiebbarer Ringkanal (37) zum Auffangen und Verteilen von Waschflüssigkeit (21a) besteht.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP93810529A EP0635309B1 (de) | 1993-07-22 | 1993-07-22 | Doppelschubzentrifuge |
DE59308079T DE59308079D1 (de) | 1993-07-22 | 1993-07-22 | Doppelschubzentrifuge |
US08/258,043 US5468389A (en) | 1993-07-22 | 1994-06-10 | Double-acting pusher centrifuge |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP93810529A EP0635309B1 (de) | 1993-07-22 | 1993-07-22 | Doppelschubzentrifuge |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0635309A1 EP0635309A1 (de) | 1995-01-25 |
EP0635309B1 true EP0635309B1 (de) | 1998-01-28 |
Family
ID=8215005
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93810529A Expired - Lifetime EP0635309B1 (de) | 1993-07-22 | 1993-07-22 | Doppelschubzentrifuge |
Country Status (3)
Country | Link |
---|---|
US (1) | US5468389A (de) |
EP (1) | EP0635309B1 (de) |
DE (1) | DE59308079D1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2913112A1 (de) | 2014-02-26 | 2015-09-02 | Ferrum AG | Zentrifuge, sowie Verfahren zur Beladung einer Zentrifuge |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6736968B2 (en) * | 2002-06-25 | 2004-05-18 | Tema Systems, Inc. | Horizontal scroll screen centrifuge |
DE102006051236A1 (de) * | 2006-10-31 | 2008-05-08 | Siebtechnik Gmbh | Tragkorb einer Siebzentrifuge |
CN101138751B (zh) * | 2007-09-18 | 2011-09-21 | 江苏牡丹离心机制造有限公司 | 离心卸料离心机中的进料装置 |
CN103100491B (zh) * | 2012-12-14 | 2014-07-16 | 浙江轻机离心机制造有限公司 | 一种推料离心机转鼓上的推料片 |
TR201818787T4 (tr) * | 2014-06-24 | 2019-01-21 | Ferrum Ag | Çift İticili Santrifüj Ve İtici Taban Donanımı |
IL268856B2 (en) | 2017-02-27 | 2024-09-01 | Translate Bio Inc | Methods for the purification of messenger RNA |
CN107694770A (zh) * | 2017-11-29 | 2018-02-16 | 蚌埠市朗辰化工设备有限公司 | 一种药液分离用多级离心机 |
KR102504657B1 (ko) * | 2019-11-18 | 2023-02-27 | 주식회사 엘지화학 | 가압 원심 탈수기 |
AU2021351541A1 (en) | 2020-10-01 | 2023-06-08 | Translate Bio, Inc. | Methods for purification of messenger rna |
CN115254579B (zh) * | 2022-09-13 | 2023-06-16 | 甘肃省定西公路事业发展中心 | 一种公路工程用分类筛沙机 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE595612C (de) * | 1930-08-15 | 1934-04-23 | Gutehoffnungshuette Oberhausen | Schleudermaschine zum Entwaessern von schlaemmbreiartigem bis feinkoernigem Gut |
DE1114149B (de) * | 1959-11-17 | 1961-09-21 | Karl Marx Stadt Maschf | Schubzentrifuge mit in beiden Hubrichtungen das Schleudergut austragendem Schubboden |
SE351372B (de) * | 1967-11-02 | 1972-11-27 | Eie Maskin Ab N A | |
DE1949641A1 (de) * | 1969-10-01 | 1971-04-08 | Buban Eberhard | Schubboden mit verschliessbarem Durchlass fuer Schubzentrifugen |
CH653573A5 (de) * | 1981-06-25 | 1986-01-15 | Escher Wyss Ag | Schubzentrifuge. |
CH660695A5 (de) * | 1982-09-06 | 1987-06-15 | Escher Wyss Ag | Doppel-schubzentrifuge. |
-
1993
- 1993-07-22 DE DE59308079T patent/DE59308079D1/de not_active Expired - Lifetime
- 1993-07-22 EP EP93810529A patent/EP0635309B1/de not_active Expired - Lifetime
-
1994
- 1994-06-10 US US08/258,043 patent/US5468389A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2913112A1 (de) | 2014-02-26 | 2015-09-02 | Ferrum AG | Zentrifuge, sowie Verfahren zur Beladung einer Zentrifuge |
Also Published As
Publication number | Publication date |
---|---|
US5468389A (en) | 1995-11-21 |
EP0635309A1 (de) | 1995-01-25 |
DE59308079D1 (de) | 1998-03-05 |
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