EP1509329A1 - Vollmantel-schneckenzentrifuge mit schälscheibe und hydrohermetischer abdichtung sowie verfahren zu deren betrieb - Google Patents
Vollmantel-schneckenzentrifuge mit schälscheibe und hydrohermetischer abdichtung sowie verfahren zu deren betriebInfo
- Publication number
- EP1509329A1 EP1509329A1 EP03730121A EP03730121A EP1509329A1 EP 1509329 A1 EP1509329 A1 EP 1509329A1 EP 03730121 A EP03730121 A EP 03730121A EP 03730121 A EP03730121 A EP 03730121A EP 1509329 A1 EP1509329 A1 EP 1509329A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chamber
- solid bowl
- screw centrifuge
- bowl screw
- 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.)
- Granted
Links
- 239000007787 solid Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims description 9
- 239000007788 liquid Substances 0.000 claims abstract description 42
- 230000000903 blocking effect Effects 0.000 claims abstract description 10
- 230000004888 barrier function Effects 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 3
- 230000001154 acute effect Effects 0.000 claims description 2
- 239000007791 liquid phase Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 1
- 208000034809 Product contamination Diseases 0.000 description 1
- 235000013405 beer Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B11/00—Feeding, charging, or discharging bowls
- B04B11/08—Skimmers or scrapers for discharging ; Regulating thereof
- B04B11/082—Skimmers for discharging liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
- B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
- B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
- B04B2001/2083—Configuration of liquid outlets
Definitions
- the invention relates to a solid bowl screw centrifuge according to the preamble of claim 1 and a method for its operation.
- a liquid weir with a weir which has a passage.
- a throttle disc which is stationary relative to this while the drum is rotating and which is axially displaceable via a threaded bushing. The distance between the weir and the throttle plate can be changed by turning the threaded bushing.
- the chamber has an annular space with a first locking and siphon disk arranged therein, the chamber is a hydrohermetic locking chamber for sealing the centrifugal space from the environment by means of a sealing liquid, which is directly a Supply line for the separate barrier liquid independent of the centrifuged material is assigned,
- the invention is also intended to provide a simple method for operating the centrifuge according to the invention. This is stated in spoke 15.
- the screw preferably has a second siphon disk, which extends from the
- Auger extends radially outward into the centrifugal chamber.
- the barrier chamber with barrier fluid supply - preferably in particular in combination with the two barrier or siphon disks - enables the centrifugal chamber to be reliably sealed against the surrounding atmosphere in a structurally simple and cost-effective manner.
- the product can come into contact with the surrounding atmosphere through the labyrinth seal.
- Barrier chambers are also known per se from centrifuges with a vertical axis of rotation, a separate barrier liquid also being passed into these (DE 196 31 226). Locking chambers in such separators are also known from DE 657 473. However, it has not yet been considered and probably also not considered advantageous to re-lock a chamber even with centrifuges with a horizontal axis of rotation. alize which is supplied with a separate barrier liquid that is independent of the centrifuged material.
- a pressure was built up inside the decanter or the solid bowl screw centrifuge, a gas would be dissolved in the centrifuged material (e.g. a drink)
- Sufficient pressure can be built up with the lock or siphon disk in the lock chamber so that a gas such as CO 2 is kept in the liquid (phase).
- a gas such as CO 2
- the pressure in the locking chamber can be varied, which is preferably up to 4 bar, in particular 0.5 to 2.5 bar. The pressure influences the way in which the solid is conveyed and / or its consistency.
- the inlet line and an outlet bore which allow the continuous supply and discharge of the sealing liquid into and out of the blocking chamber, particularly preferably open into an annular space of the blocking chamber.
- the blocking chamber like the peeling disc, is arranged on the drum side or towards the drum with respect to the main bearing of the drum, which makes it possible to make the construction very simple. This not only results in a permanent seal against the surrounding atmosphere, but also under certain circumstances a seal against product contamination caused by oil mist in the main bearing on the liquid side (not shown here).
- FIG. 1 shows a section through a solid bowl screw centrifuge according to the invention
- FIG. 2 shows an enlarged detail from FIG. 1.
- FIG. 1 shows a solid-bowl screw centrifuge 1 with a drum 3 with a horizontal axis of rotation, in which a screw 5 is arranged.
- the drum 3 and the screw 5 each have an essentially cylindrical section and a section which tapers conically here.
- An axially extending central inlet pipe 7 serves to feed the centrifuged material 8 into the centrifugal chamber 11 between the screw 5 and the drum 3 via a distributor 9, which is here perpendicular to the inlet pipe 7.
- the liquid flows to the larger drum diameter at the rear end of the cylindrical section of the drum 3 and is passed there by a weir 15 into a chamber 17 which adjoins the actual centrifugal chamber with a smaller diameter than the centrifugal chamber.
- a peeling disk 19 is arranged for the discharge of the liquid phase L, to which a discharge channel 20 adjoins which leads the liquid phase L out of the drum 3.
- the peeling disk 19 is arranged directly on the inlet pipe 7 which is stationary during operation, a sealed, gap-free arrangement being realized between the peeling disk 19 and the inlet pipe 7.
- the screw 1 has a first siphon disk 21, which extends from the screw 5 radially outward into the centrifugal space 11 and into the front of the solids discharge (not shown here) Liquid level Pl is immersed.
- the inner area or the centrifugal area in the centrifugal space 11 (here on the right of the siphon disk 21) is hermetically sealed from the surroundings or the surrounding atmosphere. It would also be conceivable to arrange further siphon disks in the conical region of the drum 3 in order to influence the consistency of solids (not shown here)
- annular shoulder 23 is arranged on the side of the peeling disc 19 facing the centrifugal chamber, which shoulder extends radially inwards from the inner circumference of the chamber 17.
- a liquid level Pl is formed between the first siphon disk 21 and the annular shoulder 23 because the siphon disk 21 and the annular shoulder overlap in the radial direction or because the two elements are matched to one another.
- liquid level P2 here extends between the annular shoulder 23 closer to the peeling disk 19 and the peeling disk 19 up to the inlet opening 25 of the peeling disk.
- the chamber 17 extends radially inwards up to close to the inlet pipe or to a diameter which is smaller than the diameter of the screw 5 and opens into an axial passage 27 , to which in the axial direction an annular chamber 29 acts as a blocking chamber, which in turn opens into an axial discharge channel 31 for barrier liquid on the outer circumference of the inlet pipe 7 and the discharge channel 21 for the centrifuged material, the inner diameter of the discharge channel 31 for barrier liquid being smaller than the inner diameter of the passage 27, so that barrier liquid overflowing from the barrier chamber 19 runs through the discharge channel 31.
- a further siphon or blocking disk 33 is arranged in a stationary manner on the inner circumference thereof, which extends radially outward from the inside into the blocking chamber.
- An inlet line 35 leading from the outside into the centrifuge - here arranged parallel to the inlet pipe 7 on its outer circumference - enables a barrier liquid, such as water, that is independent of the material to be centrifuged to be fed directly into the barrier chamber 29 from the inside.
- a drain hole 37 - here on the outer circumference of the annular space 29 at an acute angle to the axis of rotation leading radially outward from the drum 3 - enables the barrier liquid to be continuously drained out of the annular space 29, which results in advantageous continuous cleaning.
- a liquid level P3 of the barrier liquid is formed in the annular space 29, which seals the inside of the drum 3 against the surrounding atmosphere when the inflow amount of barrier liquid into the barrier chamber is greater than the discharge amount , which is set by the dimensioning of the drain hole 37. Excess water that does not drain through the drain hole 37 flows out through the drainage channel 31.
- the pressure in the locking chamber 29 can be varied by varying the diameter of the locking and siphon disk 33. The pressure influences the way in which the solid is conveyed and / or its consistency.
Landscapes
- Centrifugal Separators (AREA)
- Sealing Devices (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Refuse Collection And Transfer (AREA)
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10223802A DE10223802B4 (de) | 2002-05-29 | 2002-05-29 | Vollmantel-Schneckenzentrifuge |
| DE10223802 | 2002-05-29 | ||
| PCT/EP2003/005530 WO2003099446A1 (de) | 2002-05-29 | 2003-05-27 | Vollmantel-schneckenzentrifuge mit schälscheibe und hydrohermetischer abdichtun g sowie verfahren zu deren betrieb |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1509329A1 true EP1509329A1 (de) | 2005-03-02 |
| EP1509329B1 EP1509329B1 (de) | 2005-11-09 |
Family
ID=29557371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03730121A Expired - Lifetime EP1509329B1 (de) | 2002-05-29 | 2003-05-27 | Vollmantel-schneckenzentrifuge mit schälscheibe und hydrohermetischer abdichtung sowie verfahren zu deren betrieb |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US7056273B2 (de) |
| EP (1) | EP1509329B1 (de) |
| AT (1) | ATE309050T1 (de) |
| AU (1) | AU2003240718B2 (de) |
| BR (1) | BR0311565B1 (de) |
| CA (1) | CA2485082C (de) |
| DE (2) | DE10223802B4 (de) |
| DK (1) | DK1509329T3 (de) |
| ES (1) | ES2248753T4 (de) |
| MX (1) | MXPA04011892A (de) |
| PL (1) | PL200041B1 (de) |
| RU (1) | RU2283188C2 (de) |
| UA (1) | UA78059C2 (de) |
| WO (1) | WO2003099446A1 (de) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10148774B4 (de) * | 2001-10-02 | 2005-08-11 | Westfalia Separator Ag | Vollmantel-Schneckenzentrifuge mit Druckgehäuse |
| DE10212187A1 (de) * | 2002-03-20 | 2003-10-02 | Hiller Gmbh | Schneckenzentrifuge |
| DE10223802B4 (de) * | 2002-05-29 | 2005-06-09 | Westfalia Separator Ag | Vollmantel-Schneckenzentrifuge |
| DE10336350B4 (de) * | 2003-08-08 | 2007-10-31 | Westfalia Separator Ag | Vollmantel-Schneckenzentrifuge, mit Schälscheibe |
| US7255670B2 (en) * | 2004-03-04 | 2007-08-14 | Hutchison Hayes, L.P. | Three phase decanter centrifuge |
| DE102005027553A1 (de) | 2005-06-14 | 2006-12-28 | Westfalia Separator Ag | Drei-Phasen-Vollmantel-Schneckenzentrifuge und Verfahren zur Regelung des Trennprozesses |
| DE102006006178A1 (de) * | 2006-02-10 | 2007-08-16 | Westfalia Separator Ag | Vollmantel-Schneckenzentrifuge und Verfahren zu deren Betrieb |
| CA2619883C (en) | 2006-05-11 | 2014-04-15 | Westfalia Separator Ag | Separator having a liquid outlet including a throttling device |
| CN101664718B (zh) * | 2009-09-09 | 2011-12-14 | 江苏华大离心机制造有限公司 | 卧式螺旋卸料沉降离心机 |
| EP3085449B1 (de) * | 2015-04-24 | 2020-06-03 | Alfa Laval Corporate AB | Zentrifugalabscheider und zugehörige verfahren |
| DK3398687T3 (da) * | 2017-05-04 | 2020-04-20 | Andritz Sas | Dekantercentrifuge |
| RU209116U1 (ru) * | 2021-05-17 | 2022-02-02 | Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" (Госкорпорация "Росатом") | Шнек барабана-испарителя для очистки его внутренней поверхности |
| CN119186842A (zh) * | 2024-11-29 | 2024-12-27 | 湘潭通用离心机有限公司 | 一种处理渗滤液的卧式螺旋卸料沉降离心机 |
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| DE653294C (de) | 1937-11-19 | Friedrich Kinscher | Verschlussmittel fuer die ringfoermige Schlammauslassoeffnung einer vollwandigen Schleudertrommel | |
| GB479007A (en) | 1936-08-25 | 1938-01-28 | Separator Ab | Improvements in or relating to centrifugal separators |
| DE657473C (de) * | 1936-08-25 | 1938-03-05 | Bergedorfer Eisenwerk Ag | Schaelschleudermaschine |
| US3279687A (en) * | 1963-05-24 | 1966-10-18 | Bird Machine Co | Centrifuge |
| US3279688A (en) * | 1964-08-03 | 1966-10-18 | Bird Machine Co | Centrifuge |
| US3321131A (en) * | 1964-10-21 | 1967-05-23 | Bird Machine Co | Centrifuge |
| NO120465B (de) | 1965-10-21 | 1970-10-19 | Alfa Laval Ab | |
| US3462076A (en) | 1966-11-04 | 1969-08-19 | Westfalia Separator Ag | Self-cleaning centrifugal separator drum having an external piston valve |
| US3568919A (en) | 1968-01-10 | 1971-03-09 | Titan Separator As | Screw centrifuge |
| DE1908949A1 (de) | 1969-02-22 | 1970-09-10 | Westfalia Separator Ag | Dichtungsanordnung fuer Schleudertrommeln der selbstreinigenden Bauart |
| DE2154558A1 (de) * | 1971-11-03 | 1973-05-10 | Georg Hiller | Vollmantelschneckenzentrifuge |
| DE2246113A1 (de) * | 1971-11-25 | 1973-05-30 | Alfa Laval Ab | Verfahren zum betrieb eines zentrifugalseparators, dessen auslass fuer die separierte fluessigkeit eine schaeleinrichtung ist, sowie schlammzentrifuge zur durchfuehrung des verfahrens |
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| DE2419355C2 (de) * | 1974-04-22 | 1983-12-01 | Alfa-Laval Separation A/S, Soeborg | Zentrifuge |
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| DE10223802B4 (de) * | 2002-05-29 | 2005-06-09 | Westfalia Separator Ag | Vollmantel-Schneckenzentrifuge |
-
2002
- 2002-05-29 DE DE10223802A patent/DE10223802B4/de not_active Expired - Fee Related
-
2003
- 2003-05-27 AT AT03730121T patent/ATE309050T1/de active
- 2003-05-27 MX MXPA04011892A patent/MXPA04011892A/es active IP Right Grant
- 2003-05-27 EP EP03730121A patent/EP1509329B1/de not_active Expired - Lifetime
- 2003-05-27 DE DE50301628T patent/DE50301628D1/de not_active Expired - Lifetime
- 2003-05-27 ES ES03730121T patent/ES2248753T4/es not_active Expired - Lifetime
- 2003-05-27 BR BRPI0311565-8A patent/BR0311565B1/pt not_active IP Right Cessation
- 2003-05-27 PL PL372242A patent/PL200041B1/pl unknown
- 2003-05-27 CA CA002485082A patent/CA2485082C/en not_active Expired - Lifetime
- 2003-05-27 UA UA20041210936A patent/UA78059C2/uk unknown
- 2003-05-27 DK DK03730121T patent/DK1509329T3/da active
- 2003-05-27 AU AU2003240718A patent/AU2003240718B2/en not_active Ceased
- 2003-05-27 US US10/513,927 patent/US7056273B2/en not_active Expired - Lifetime
- 2003-05-27 RU RU2004139021/12A patent/RU2283188C2/ru active
- 2003-05-27 WO PCT/EP2003/005530 patent/WO2003099446A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03099446A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| UA78059C2 (en) | 2007-02-15 |
| BR0311565B1 (pt) | 2011-08-23 |
| AU2003240718A1 (en) | 2003-12-12 |
| DE10223802B4 (de) | 2005-06-09 |
| ES2248753T3 (es) | 2006-03-16 |
| WO2003099446A1 (de) | 2003-12-04 |
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| ES2248753T4 (es) | 2008-08-01 |
| EP1509329B1 (de) | 2005-11-09 |
| DE10223802A1 (de) | 2003-12-18 |
| RU2283188C2 (ru) | 2006-09-10 |
| ATE309050T1 (de) | 2005-11-15 |
| US20050227848A1 (en) | 2005-10-13 |
| AU2003240718B2 (en) | 2008-10-02 |
| CA2485082A1 (en) | 2003-12-04 |
| CA2485082C (en) | 2008-03-18 |
| PL200041B1 (pl) | 2008-11-28 |
| RU2004139021A (ru) | 2005-07-10 |
| BR0311565A (pt) | 2007-04-27 |
| DK1509329T3 (da) | 2006-01-30 |
| DE50301628D1 (de) | 2005-12-15 |
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