EP1998896A1 - Fully jacketed screw centrifuge with efflux orifices for partial and residual emptying of the drum - Google Patents
Fully jacketed screw centrifuge with efflux orifices for partial and residual emptying of the drumInfo
- Publication number
- EP1998896A1 EP1998896A1 EP07727173A EP07727173A EP1998896A1 EP 1998896 A1 EP1998896 A1 EP 1998896A1 EP 07727173 A EP07727173 A EP 07727173A EP 07727173 A EP07727173 A EP 07727173A EP 1998896 A1 EP1998896 A1 EP 1998896A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drum
- centrifuge according
- solid bowl
- ring
- chamber
- 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
Classifications
-
- 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.
- Solid bowl centrifuges are known in various embodiments.
- the liquid ring in the drum breaks down below a limit speed, so that the residual liquid collects at the bottom of the drum.
- the discharge openings are arranged axially in front of the continuously acting liquid discharge, which takes place in particular by means of a paring disc or by means of further openings in the drum lid.
- Abschöffhungen are formed in such a drum shell of the drum that they are radially outside a separating and / or Klärtellerverses of plates, wherein the Klärtellervol is connected upstream of the continuous remplisstechniksaustrag.
- Plate packs in decanters are e.g. from DE 100 65 060 Al known.
- the supplemental drainage holes are particularly useful because they can be used not only to drain a residual liquid level but also to partially empty (e.g., a partial volume of 10 liters) during full speed production or processing.
- an arrangement of the drainage openings in the drum cover can be realized.
- non-generic, self-draining drum separators are known, as from DE 38 21 486 Al or DE 38 29 158 Al, the annular slide for closing Feststoffaustragsötechnische have.
- additional discharge openings are now provided which do not replace but supplement the continuous solids discharge openings at the conical end of the drum in order to simplify, in particular, emptying of the drum. Further advantageous embodiments can be found in the remaining subclaims.
- FIG. 4 shows a detail view of a third solid bowl screw centrifuge in a first operating position
- the solid bowl screw centrifuge serves to separate at least one solid phase and one or more liquid phases into a product passed through an inlet pipe 5 and a distributor 6 into the centrifugal space 7 in the drum 1. Due to the density difference, the solid phase accumulates outside in the drum 1, from where it is continuously conveyed from the drum 1 in the direction of a solids discharge 8 at the tapering end of the drum 1 and through the solids discharge 8.
- the at least one liquid phase is continuously discharged at the opposite end of the drum by at least one liquid discharge.
- This liquid discharge can be realized according to the invention in a generic drum according to the type of FIG. 5 in various ways.
- Such constructions NEN, which can be used in a decanter, which otherwise may correspond to that of FIG. 5, are shown in FIGS. 1 to 4.
- a drum cover 14 closing off the drum 1 at the cylindrical end has at least one weir-like passage opening 9 which forms the liquid discharge (indicated in FIGS. 2 and 3). But it is also a derivative in another form, e.g. through a paring disc 22 (Fig. 1) possible. If several liquid phases are to be discharged, these are removed by liquid outlets at different radii of the centrifugal space 7. The liquid discharge takes place continuously.
- the centrifuge of FIG. 5 has further outflow openings 10, which are advantageously distributed circumferentially on the outer circumference of the drum shell, to which a closure device is assigned, which makes it possible to open the outflow openings during operation To open drum 1 and close.
- the discharge openings 10 are distributed around the circumference.
- the fact that the drainage openings 10 are formed and distributed directly in the drum casing 15 has the advantage that they can be easily formed as openings in this component and that a guide of drainage channels through the drum cover 14 is not necessary.
- the closure device for the Abpoundöffhungen 10 is formed as shown in FIG. 1 in a simple constructive design as a cylindrical ring 11 which rotates during operation with the drum 1 and on the drum 1 and / or the drum cover 14 and / or one connected to the drum lid Component is guided axially displaceable.
- the discharge openings 10 are formed axially just before the drum cover 14 facing end portion of the drum shell.
- the drum shell has on his axial end in front of the drum cover 14 on a radially projecting collar 15, which is provided with a gradation 12. According to Fig. 1 to 3, the drainage openings are advantageously formed in this area.
- the ring 11 is guided here displaceably on the outer circumference of the drum cover 14.
- the ring 11 rotates during operation with the drum 1, it is necessary to be able to move it axially in operation in a simple manner. This is preferably effected fluidically, in particular hydraulically.
- an advantageous hydraulic chamber 13 shown by way of example, is formed in the drum cover 14, into which an inner, preferably disk-like, radial projection 16 of the ring 11 extends, so that on one side of the projection 16 there is an opening chamber 13a (here left of the approach) and on the other side of the approach a closing chamber 13b is formed.
- the ⁇ ffhungshunt has a greater radial extent than the lock chamber 13b.
- the projection 16 extends radially from outside to inside into the hydraulic chamber 13. Radially inward, the ⁇ ffhungshunt 13a and the closing chamber 13b are in operative connection.
- Ribs 28 are arranged in the annular chamber 24 in order to take along the fluid, in particular water, which passes from the supply line 18, which is not rotating during operation, into the rotating annular chamber 24.
- the function of the hydraulic chamber 13 is as follows:
- sealing ring 31 between the drum cover 14 and the drum 1 and there is a sealing ring 32 between the ring 19 and the drum cover 14. Also between the drum cover 14 and the part 23, a sealing ring 33 is disposed around the hydraulic line 17 around. Additional seals 35, 36 can be found inside the paring disc.
- the drainage openings 10 are then preferably formed in the drum shell of the drum 1 in such a way that they lie radially outside the separating and / or separating plate pact, which is downstream of the screw 4 and upstream of the liquid discharge 9.
- drum cover is internally conical, so that on its outer peripheral contour is a very good possibility to accommodate the mechanism or here the hydraulic system for moving the ring 11.
- the hydraulic chamber has a ⁇ ffhungshunt and that one or more spring elements are provided for generating the closing force on the ring (not shown).
- the discharge openings 10 are formed axially in the end facing the drum 1 of the drum cover 14.
- the drum cover 14 also has, at its axial end in front of the drum 1, preferably a radially projecting collar 37, which is provided with the step 12 and here outwardly aligned with the collar 15 of the drum 1.
- the ring 11 is in turn guided displaceably on the outer circumference of the drum cover 14 here.
Landscapes
- Centrifugal Separators (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006015211 | 2006-03-30 | ||
DE102006030477A DE102006030477A1 (en) | 2006-03-30 | 2006-07-01 | Full metal helical conveyor centrifuge, has ring assigned to opening as closure device and displaceable using actuating device in position to open opening and in another position to close opening, where actuating device is assigned to ring |
PCT/EP2007/052697 WO2007113113A1 (en) | 2006-03-30 | 2007-03-21 | Fully jacketed screw centrifuge with efflux orifices for partial and residual emptying of the drum |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1998896A1 true EP1998896A1 (en) | 2008-12-10 |
EP1998896B1 EP1998896B1 (en) | 2017-12-13 |
Family
ID=38008353
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07727173.2A Not-in-force EP1998896B1 (en) | 2006-03-30 | 2007-03-21 | Fully jacketed screw centrifuge with efflux orifices for partial and residual emptying of the drum |
Country Status (8)
Country | Link |
---|---|
US (1) | US8465405B2 (en) |
EP (1) | EP1998896B1 (en) |
CN (1) | CN101516519B (en) |
AR (1) | AR060333A1 (en) |
CL (1) | CL2007000871A1 (en) |
DE (1) | DE102006030477A1 (en) |
RU (1) | RU2442659C2 (en) |
WO (1) | WO2007113113A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10336350B4 (en) * | 2003-08-08 | 2007-10-31 | Westfalia Separator Ag | Solid bowl centrifuge, with paring disc |
US8579783B2 (en) * | 2009-07-02 | 2013-11-12 | Andritz S.A.S. | Weir and choke plate for solid bowl centrifuge |
DK178254B1 (en) | 2010-11-12 | 2015-10-12 | Alfa Laval Corp Ab | Centrifugal separator, abrasion resistant element and set of abrasion resistant elements for a centrifugal separator |
CN107321507A (en) * | 2017-05-27 | 2017-11-07 | 宜兴市华鼎机械有限公司 | A kind of horizontal centrifuge for removing hydrops |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB998669A (en) * | 1964-06-18 | 1965-07-21 | Starcosa Gmbh | Centrifugal separators |
DE3620912A1 (en) * | 1986-06-21 | 1987-12-23 | Kloeckner Humboldt Deutz Ag | Centrifuge with continuous separation of materials of different density |
DE3728901C1 (en) * | 1987-08-29 | 1988-11-17 | Westfalia Separator Ag | Weir for adjusting the level of liquid in solid-bowl centrifuge drums of worm centrifuges |
DE3821486A1 (en) * | 1988-06-25 | 1989-12-28 | Westfalia Separator Ag | Self-emptying centrifugal drum |
DE3829158A1 (en) * | 1988-08-27 | 1990-03-01 | Heckmann Wolfgang | Self-emptying drum separator |
CN1033162A (en) * | 1988-12-06 | 1989-05-31 | 苏州市化工设备三厂 | Spiral discharge sedimentation centrifuge |
DE3911320A1 (en) * | 1989-04-07 | 1990-10-11 | Kloeckner Humboldt Deutz Ag | CENTRIFUGE FOR CONTINUOUS SEPARATION OF SUBSTANCES OF DIFFERENT DENSITY |
DE3921327A1 (en) * | 1989-06-29 | 1991-01-03 | Kloeckner Humboldt Deutz Ag | WEIR FOR ADJUSTING THE LIQUID LEVEL IN FULL-COAT CENTRIFUGES |
DE4130759A1 (en) * | 1991-09-16 | 1993-03-18 | Flottweg Gmbh | CENTRIFUGE FOR CONTINUOUS SEPARATION OF SUBSTANCES OF DIFFERENT DENSITY |
DE4320265C2 (en) * | 1993-06-18 | 1995-08-03 | Westfalia Separator Ag | Weir for solid jacket centrifugal drums |
DE10021983A1 (en) * | 2000-05-05 | 2001-11-08 | Baker Hughes De Gmbh | Solid bowl centrifuge has an adjustable weir consisting of an annular plate connected to the centrifuge housing and fixed to cover the liquid openings of the centrifuge drum from the outside |
DE10065060B4 (en) | 2000-12-27 | 2004-07-08 | Westfalia Separator Ag | Solid bowl screw centrifuge with plate insert |
DE10148774B4 (en) * | 2001-10-02 | 2005-08-11 | Westfalia Separator Ag | Solid bowl screw centrifuge with pressure housing |
JP3942402B2 (en) * | 2001-11-01 | 2007-07-11 | 寿工業株式会社 | Centrifuge |
DE10203652B4 (en) * | 2002-01-30 | 2006-10-19 | Westfalia Separator Ag | Solid bowl centrifuge with a weir |
DE10209925B4 (en) * | 2002-03-07 | 2010-06-17 | Gea Westfalia Separator Gmbh | Three-phase solid bowl screw centrifuge, solid bowl screw centrifuge and method of operating a three-phase solid bowl screw centrifuge |
DE10336350B4 (en) * | 2003-08-08 | 2007-10-31 | Westfalia Separator Ag | Solid bowl centrifuge, with paring disc |
-
2006
- 2006-07-01 DE DE102006030477A patent/DE102006030477A1/en not_active Ceased
-
2007
- 2007-03-21 US US12/294,809 patent/US8465405B2/en not_active Expired - Fee Related
- 2007-03-21 WO PCT/EP2007/052697 patent/WO2007113113A1/en active Application Filing
- 2007-03-21 RU RU2008142859/05A patent/RU2442659C2/en not_active IP Right Cessation
- 2007-03-21 EP EP07727173.2A patent/EP1998896B1/en not_active Not-in-force
- 2007-03-21 CN CN200780011579XA patent/CN101516519B/en not_active Expired - Fee Related
- 2007-03-28 AR ARP070101296A patent/AR060333A1/en active IP Right Grant
- 2007-03-29 CL CL2007000871A patent/CL2007000871A1/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2007113113A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN101516519B (en) | 2013-12-18 |
DE102006030477A1 (en) | 2007-10-04 |
WO2007113113A1 (en) | 2007-10-11 |
US20100035742A1 (en) | 2010-02-11 |
EP1998896B1 (en) | 2017-12-13 |
AR060333A1 (en) | 2008-06-11 |
RU2442659C2 (en) | 2012-02-20 |
CN101516519A (en) | 2009-08-26 |
RU2008142859A (en) | 2010-05-10 |
CL2007000871A1 (en) | 2011-03-25 |
US8465405B2 (en) | 2013-06-18 |
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