EP2622225A1 - Zentrifugalpumpe - Google Patents
ZentrifugalpumpeInfo
- Publication number
- EP2622225A1 EP2622225A1 EP11779548.4A EP11779548A EP2622225A1 EP 2622225 A1 EP2622225 A1 EP 2622225A1 EP 11779548 A EP11779548 A EP 11779548A EP 2622225 A1 EP2622225 A1 EP 2622225A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- ribs
- centrifugal pump
- separator
- disc
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous
- F04D7/045—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous with means for comminuting, mixing stirring or otherwise treating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D9/00—Priming; Preventing vapour lock
- F04D9/001—Preventing vapour lock
- F04D9/002—Preventing vapour lock by means in the very pump
- F04D9/003—Preventing vapour lock by means in the very pump separating and removing the vapour
Definitions
- the invention relates to a centrifugal pump for conveying a gasmboigen pulp suspension, with a pump impeller having at least one opening in the base plate, and ribs on the back, wherein a Separatorü is provided, consisting of a Separatorgekoruse with a fixed disc and a co-rotating with the pump shaft Disc, wherein the separator unit is arranged in the pump housing in the axial direction of the pump impeller then arranged on the pump impeller on the rear side and wherein the separator housing has a gas collection chamber with gas discharge line.
- EP 1 736 218 A1 describes a gas separation unit with a rotor. Again, a high fiber loss occurs by transporting the fibers in the degassing. In order to limit the fiber loss, a compromise with reduced pump performance has to be made.
- These known systems require a high construction cost, also much effort for the setting of the control loops is necessary to be tuned from plant to plant for different types of materials. Furthermore, the existing systems are not reliable enough to completely prevent fiber loss. Fiber losses can cause problems with pump stability in addition to the loss of pulp.
- the aim of the present invention is to eliminate these problems.
- the invention is therefore characterized in that the disk co-rotating with the pump shaft has a closed surface without openings. This offers the advantage that virtually no loss of substance is present and the pump stability is given. In this case, the compressed material pressed in the direction of the degassing space is conveyed back into the pump by means of a separator impeller, and the air can escape from the pump counter to the pumping action of the separator.
- the fixed disc is provided with ribs (guide vanes), wherein the stationary disc can have a smooth surface on the side facing the pump impeller and the ribs are arranged on the opposite side.
- the ribs or guide vanes can be arranged radially or else at any angle and designed to be straight or curved.
- a favorable embodiment of the invention is characterized in that the disk co-rotating with the pump shaft is provided with ribs (vanes), whereby the disk co-rotating with the pump shaft can have a smooth surface on the side facing the fixed disk and the ribs on the opposite side are arranged.
- the ribs or vanes can be arranged radially or at any angle and be executed straight or curved. This achieves a further reduction of the substance loss.
- An advantageous embodiment of the invention is characterized in that an opening for rinsing water is provided in the separator housing, which communicates with the channel formed by the ribs of the co-rotating disk (separator rotor) and prevents the separator unit from being laid.
- the pump impeller is preceded by a fluidizer, which may be designed as a rotor connected to the pump shaft or may be provided as a rotor arranged separately from the pump shaft, then the pulp suspension is liquefied in a simple manner and the air is separated from the substance.
- the pulp enters the pump impeller, where the vast majority of pulp is pumped into the volute casing.
- the part of the pulp mixture (fiber suspension with air) which is pressed through degassing holes in the pump impeller passes through the degassing holes in the pump impeller and through backflows in the pump impeller back space to the degassing chamber or into the separator chamber.
- Fig. 3 shows a section along the line III-III in Fig. 2 represents.
- Fig. 1 shows a system for conveying gaseous suspensions with degassing device according to the prior art.
- the centrifugal pump 1 is here mounted in the lower part of a standpipe 2 which extends below a larger container 3, e.g. Bleaching tower or similar located.
- the pump 1 has an outlet conduit 4 for the medium to be pumped, e.g. Pulp suspension and at the inlet to a rotor 5, which is located completely in the standpipe 2 and 2 should generate in conjunction with the wall of the standpipe turbulence, which lead to fluidization of the pulp suspension.
- a regulating valve 6 which is connected to a control unit 7.
- the pump 1 has a gas discharge line 8, in which a regulating valve 9 and a vacuum pump 10 are arranged.
- the control unit 7 controls the amount in the outlet line 4 through the control valve 6 and in particular the control valve 9 in the gas discharge line 8. If the height of the suspension in the container 3 and standpipe 2, measured by the pressure sensor 11 at the lower end of the standpipe 2, too high and thus there is the risk that suspension enters the gas discharge line 8, the control unit 7 closes the regulating valve 9.
- This system essentially makes it possible for gas to be adequately separated during startup and shutdown of the system.
- Fig. 2 shows a section through a centrifugal pump 1 according to the invention with a pump impeller 12 and integrated thereon fluidizer 13.
- the pump impeller 2 In the pump impeller 2 are located near the axis 14 openings 5 for the removal of gas which has collected at the fluidizer.
- fibers and liquid are conveyed back into the pump space through the ribs 16 in the gas / liquid stream passing through the openings 15.
- To the Pumping wheel then connects a separator 17.
- the inner diameter of the stator plate 18 is greater than the inner diameter of the ribs 19 of the fixed disc 18 in this area to ensure an open passage for the air / pulp suspension.
- This clearance can also be bladed through-up to just outside the outer diameter of the pump shaft projecting blades of the stator plate 18.
- the stator plate 18 sits a fixedly connected to the pump shaft and rotating at the same speed disc 22 as a rotating Separatorlaufrad 22.
- This Separatorlaufrad 22 has on the stator 8 side facing a smooth surface 23 and has on the stator 18 side facing away from or a plurality of vanes or ribs 24.
- This rotating disc 22 is smaller in diameter than the inner diameter of the separator housing 25 and forms between its outer periphery and the separator housing 25 has a gap 26 to ensure a flow of air and also of the fibers.
- This rotating disk 22 has a closed surface without openings. Due to the surface without openings, pressure build-up inside the separator becomes possible. As a result, leakage of pulp in the degassing chamber is largely prevented and the air can escape against the pumping action of the separator from the pump. To prevent clogging of the separator unit 17, rinse water can be introduced through an opening 27.
- pulp is forced through the openings 15 into the degassing chamber or, in the present case, into the separator unit 17 as a function of flow rate and consistency.
- This fibrous material is conveyed back into the pump by the separator impeller 22 with the aid of the blades 24.
- more or less air is forced through the separator unit 17, depending on the amount of air separated.
- This air is over a bore 28 on the Separatorlaufrad 22 side facing away with or without the aid of a vacuum pump from the pump.
- the separator unit 17 according to the invention thus takes place a permanent pumping back of fibers without hindering the outflowing air. Characterized in that the Separatorlaufrad 22 has a closed surface without openings, the leakage of fibers is prevented.
- the separator housing 25 forms with the pump shaft 21 the gas collecting chamber 31 and includes the gas discharge port (28) and the pipe 27 for rinsing water.
- the separated gas in particular the separated air, flows from the rear side of the pump impeller 12 through the channels formed by the ribs 19 of the standing disc 8, subsequently passes through the gap 26 into the channels formed by the ribs 24 of the rotating disc 22 the gas collection chamber 31 and is discharged from there via the gas discharge line with or without additional vacuum pump from the centrifugal pump 1.
- Fig. 3 shows a section through the centrifugal pump according to the invention along the line III-III in Fig. 2. It can be seen here the shaft 21 and the rotating disc 22 with the ribs 24, which are designed here as straight ribs. Furthermore, the ribs 19 of the fixed disc 18 can be seen, which are shown here bent by way of example. However, the ribs 19 of the fixed disc 18 as well as the ribs 24 of the rotating disc 22 can be made both straight or curved. Furthermore, in Fig. 3, the gap 26 between the rotating disk 22 and the housing 25 can be seen. Also, the annular space 29 can be seen, which is located between the fixed disc 18 and the pump shaft 21 and passes through the gas-liquid mixture in the separator 17.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Paper (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA1613/2010A AT510538B1 (de) | 2010-09-27 | 2010-09-27 | Zentrifugalpumpe |
| PCT/AT2011/000391 WO2012040752A1 (de) | 2010-09-27 | 2011-09-23 | Zentrifugalpumpe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2622225A1 true EP2622225A1 (de) | 2013-08-07 |
| EP2622225B1 EP2622225B1 (de) | 2016-04-06 |
Family
ID=44913127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP11779548.4A Active EP2622225B1 (de) | 2010-09-27 | 2011-09-23 | Zentrifugalpumpe |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US9784275B2 (de) |
| EP (1) | EP2622225B1 (de) |
| CN (1) | CN103124852B (de) |
| AT (1) | AT510538B1 (de) |
| BR (1) | BR112013007344B1 (de) |
| ES (1) | ES2579005T3 (de) |
| PT (1) | PT2622225T (de) |
| RU (1) | RU2561344C2 (de) |
| WO (1) | WO2012040752A1 (de) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT510538B1 (de) | 2010-09-27 | 2013-02-15 | Andritz Ag Maschf | Zentrifugalpumpe |
| JP6088918B2 (ja) * | 2013-06-28 | 2017-03-01 | 株式会社丸八ポンプ製作所 | 遠心式ポンプ |
| CN104373362A (zh) * | 2013-08-12 | 2015-02-25 | 苏州维艾普新材料股份有限公司 | 一种物料的平面抽取设备 |
| EP2894342B1 (de) * | 2014-01-12 | 2016-12-28 | Alfa Laval Corporate AB | Selbstansaugende Zentrifugalpumpe |
| DK2894343T3 (en) | 2014-01-12 | 2017-12-11 | Alfa Laval Corp Ab | SELF-TILTING CENTRIFUGAL PUMP |
| CN106715915B (zh) * | 2014-08-06 | 2020-01-17 | 流量控制有限责任公司 | 具有防止气锁的轴向弯曲叶片延伸部的叶轮 |
| US20190023411A1 (en) * | 2017-07-24 | 2019-01-24 | Hamilton Sundstrand Corporation | Hydrocarbon fuel system |
| KR102495740B1 (ko) * | 2018-03-14 | 2023-02-06 | 한화파워시스템 주식회사 | 임펠러 |
| CN109340122A (zh) * | 2018-09-28 | 2019-02-15 | 佛山市金诺凯机械设备有限公司 | 一种陶瓷生产用的高压泵 |
| FI129759B (en) * | 2018-11-30 | 2022-08-15 | Andritz Oy | Arrangement and procedure for removing gas from a pump |
| US12195723B2 (en) | 2019-11-08 | 2025-01-14 | The Broad Institute, Inc. | Engineered antigen presenting cells and uses thereof |
| FI20245126A1 (en) | 2024-02-08 | 2025-08-09 | Andritz Oy | Method and equipment for removing gas from gaseous fiber suspension using a medium consistency pump |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI89516B (fi) * | 1989-05-10 | 1993-06-30 | Ahlstroem Oy | Foerfarande foer blekning av cellulosamassa med otson |
| US4936744A (en) * | 1989-07-25 | 1990-06-26 | Goulds Pumps, Incorporated | Centrifugal pump |
| US5087171A (en) * | 1989-07-25 | 1992-02-11 | Goulds Pumps, Incorporated | Paper pulp centrifugal pump with gas separation |
| US5114310A (en) * | 1990-09-07 | 1992-05-19 | A. Ahlstrom Corporation | Centrifugal pump with sealing means |
| US5151010A (en) * | 1990-09-07 | 1992-09-29 | A. Ahlstrom Corporation | Combined centrifugal and vacuum pump |
| US5116198A (en) * | 1990-09-07 | 1992-05-26 | Ahlstrom Corporation | Centrifugal pumping apparatus |
| FI97024C (fi) * | 1991-07-15 | 1996-10-10 | Ahlstroem Oy | Menetelmä ja laite kaasun erottamiseksi kaasupitoisesta materiaalista |
| SE502127C2 (sv) * | 1993-12-01 | 1995-08-28 | Kvaerner Pulping Tech | Anordning vid en vakuumpump för avluftning av suspensionspump |
| SE9802178L (sv) * | 1998-06-17 | 1999-04-12 | Sunds Defibrator Ind Ab | Centrifugalpump för pumpning av en massasuspention |
| FI111023B (fi) * | 1998-12-30 | 2003-05-15 | Sulzer Pumpen Ag | Menetelmä ja laite materiaalin pumppaamiseksi sekä laitteen yhteydessä käytettävä roottori |
| FI20050733A7 (fi) * | 2005-06-22 | 2006-12-23 | Sulzer Pumpen Ag | Kaasunerotuslaite, sen etuseinä ja erotuspyörä |
| FI20050674A7 (fi) | 2005-06-22 | 2006-12-23 | Sulzer Pumpen Ag | Keskipakopumppu sen takaseinä ja erotinpyörä |
| AT510538B1 (de) | 2010-09-27 | 2013-02-15 | Andritz Ag Maschf | Zentrifugalpumpe |
-
2010
- 2010-09-27 AT ATA1613/2010A patent/AT510538B1/de active
-
2011
- 2011-09-23 WO PCT/AT2011/000391 patent/WO2012040752A1/de not_active Ceased
- 2011-09-23 EP EP11779548.4A patent/EP2622225B1/de active Active
- 2011-09-23 RU RU2013116378/06A patent/RU2561344C2/ru active
- 2011-09-23 BR BR112013007344-6A patent/BR112013007344B1/pt active IP Right Grant
- 2011-09-23 ES ES11779548.4T patent/ES2579005T3/es active Active
- 2011-09-23 CN CN201180046591.0A patent/CN103124852B/zh not_active Ceased
- 2011-09-23 US US13/876,383 patent/US9784275B2/en active Active
- 2011-09-23 PT PT117795484T patent/PT2622225T/pt unknown
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2012040752A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103124852A (zh) | 2013-05-29 |
| RU2561344C2 (ru) | 2015-08-27 |
| ES2579005T3 (es) | 2016-08-03 |
| WO2012040752A1 (de) | 2012-04-05 |
| BR112013007344A2 (pt) | 2016-07-05 |
| US9784275B2 (en) | 2017-10-10 |
| EP2622225B1 (de) | 2016-04-06 |
| AT510538B1 (de) | 2013-02-15 |
| PT2622225T (pt) | 2016-07-12 |
| RU2013116378A (ru) | 2014-11-10 |
| BR112013007344B1 (pt) | 2020-12-08 |
| CN103124852B (zh) | 2016-09-21 |
| US20140023485A1 (en) | 2014-01-23 |
| AT510538A1 (de) | 2012-04-15 |
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