EP1308626A1 - Flüssigkeitspumpe - Google Patents
Flüssigkeitspumpe Download PDFInfo
- Publication number
- EP1308626A1 EP1308626A1 EP01126117A EP01126117A EP1308626A1 EP 1308626 A1 EP1308626 A1 EP 1308626A1 EP 01126117 A EP01126117 A EP 01126117A EP 01126117 A EP01126117 A EP 01126117A EP 1308626 A1 EP1308626 A1 EP 1308626A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- impeller
- liquid ring
- ring pump
- pump
- liquid
- 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
- 239000007788 liquid Substances 0.000 title claims abstract description 51
- 238000011010 flushing procedure Methods 0.000 claims abstract description 8
- 238000010276 construction Methods 0.000 abstract description 5
- 239000012530 fluid Substances 0.000 abstract description 5
- 239000000835 fiber Substances 0.000 description 10
- 239000007789 gas Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000007787 solid Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 229920001131 Pulp (paper) Polymers 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000007872 degassing Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
- F04C27/008—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids for other than working fluid, i.e. the sealing arrangements are not between working chambers of the machine
- F04C27/009—Shaft sealings specially adapted for pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C19/00—Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids
Definitions
- the invention relates to a liquid ring pump with a Impeller in a cylindrical cavity of a housing rotates eccentrically, with one on an axial end face the impeller arranged control disc, the openings for Has supply and discharge of the conveying gas, the impeller on the other end face a closed ring Has end wall, and with one on this other side arranged mechanical seal applied with flushing liquid.
- the rinsing liquid that required for trouble-free functioning of the mechanical seal is from the liquid ring pump due to the suctioned the existing pressure difference.
- the accumulating Liquid forms the liquid ring of the liquid ring pump.
- From the pressure slot of the liquid ring pump the compressed medium is fed through a pressure line dissipated outside.
- the medium can be in a suitable location be returned to the process.
- the supply of the liquid ring pump with the operating fluid, in particular the flushing water of the mechanical seal is not for everyone Operating modes of the liquid ring pump ensured. In particular at low speeds it forms in the liquid ring pump not a stable liquid ring immediately out.
- the invention relates to a pump of the type mentioned Art (DE 42 29 017 A1).
- the object of the invention is to create a Liquid ring pump, even at low speed the formation of a sufficient liquid ring is ensured and with the gases also containing solid particles can be reliably pumped.
- the solution according to the invention is that in the end wall at least one arcuate radially curved to the circumference of the impeller directed groove is provided, which, contrary Rotation direction seen, from the inside towards the circumference of the impeller runs.
- This groove is so aligned that during rotation the impeller an outward movement within the groove takes place.
- the depth of this groove is chosen so that the solids contained in the gas, in particular the paper fibers, outwards, i.e. back into the liquid ring be transported away.
- the pumping effect caused thereby the flushing water of the mechanical seal moves outwards, causing the formation of the liquid ring even at low Revolutions is effected. It also gets through this Pumping or flushing movement through the groove promoting the solid particles, especially the paper fibers are supported to the outside.
- the groove has the positive effect that it is a targeted flow direction in the axial gap between the impeller and housing causes.
- liquid ring pump according to the invention in combination to be used with a centrifugal pump, in particular for pumping paper pulp, is advantageously provided that the impeller on the pump shaft of the centrifugal pump is arranged. This is through a more compact Construction simplified the pump set. The one for the trouble-free The function of the necessary liquid ring pump is then integrated into the overall construction. With one of these solutions the liquid ring pump is behind on the pump shaft the centrifugal pump arranged. The advantage is obvious since the integration of the liquid ring pump only two requires additional main components. So that this constructive Execution but works reliably, are different to consider constructive details. So the control disc without valve construction for the pressure slot.
- the so-called built-in pressure ratio results from the size of the print slot, guaranteed about a wide suction pressure range acceptable flow rates.
- the liquid ring pump is arranged on the common pump shaft then it does not need its own shaft seal. Due to the compact arrangement, the liquid ring pump requires no external suction line, the flow paths are realized by built-in channels and column. The liquid ring pump sucks the air bubbles out of the pulp that collect behind the impeller of the centrifugal pump. To becomes the annulus behind the pump impeller of the centrifugal pump connected to the suction slot of the liquid ring pump.
- the pump impeller 2 of a centrifugal pump is on the pump shaft 1 arranged. This is also on the pump shaft 1 Impeller 3 of the liquid ring pump arranged. This rotates eccentric in a cylindrical space 4. With a Front side it is against a control disc 5, the one Has suction slot 6 and a pressure slot 7. When rotating of the impeller 3 forms on the circumference of the space 4 the liquid ring. Because the volume is between each Wings of the impeller 3 through the liquid ring is limited due to the eccentric arrangement during of the rotation changes, one arranged in the figure below Gas amount compressed upwards to a smaller volume and then leaves the pump through the pressure slot 7. It is sucked in with solid particles, especially paper fibers enriched air from the centrifugal pump the suction slot 6.
- the shaft 1 is against the housing 8 by a mechanical seal 9 sealed, the flushing liquid through a channel 10, especially rinse water is supplied.
- the impeller 3 On the control disc 5 opposite end face is the impeller 3 provided with a raised wall 11, the 8 directed surface with grooves running from the inside to the outside 12 is provided. These grooves are in particular spiral and cause a pumping action from the inside out the flushing liquid entering the mechanical seal 9 at 10 and for paper fibers that may have penetrated at this point.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
Description
Claims (4)
- Flüssigkeitsringpumpe mit einem Flügelrad (3), das in einem zylindrischen Hohlraum eines Gehäuses (8) exzentrisch rotiert, mit einer an einer axialen Stirnseite des Flügelrades (3) angeordneten Steuerscheibe (5), die Öffnungen (6, 7) zum Zu- und Abführen des Fördergases aufweist, wobei das Flügelrad auf der anderen Stirnseite eine ringförmige geschlossene Stirnwand (11) aufweist, und mit einer auf dieser anderen Seite angeordneten, mit Spülflüssigkeit beaufschlagten Gleitringdichtung (9), dadurch gekennzeichnet, daß in der Stirnwand (11) mindestens eine bogenförmig radial gekrümmte zum Umfang des Flügelrades (3) gerichtete Nut (12) vorgesehen ist, die, entgegen der Rotationsrichtung gesehen, von innen in Richtung zum Umfang des Flügelrades (3) verläuft.
- Flüssigkeitsringpumpe nach Anspruch 1, dadurch gekennzeichnet, daß die Nut(en) (12) spiralförmig ausgebildet ist (sind).
- Flüssigkeitsringpumpe nach Anspruch 2, dadurch gekennzeichnet, daß eine mehrgängige spiralförmige Nut (12) vorgesehen ist.
- Flüssigkeitsringpumpe nach den Ansprüchen 1-3, dadurch gekennzeichnet, daß das Flügelrad (3) auf der Pumpenwelle (2) angeordnet ist.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT01126117T ATE269492T1 (de) | 2001-11-02 | 2001-11-02 | Flüssigkeitsringpumpe |
| DE50102618T DE50102618D1 (de) | 2001-11-02 | 2001-11-02 | Flüssigkeitsringpumpe |
| EP01126117A EP1308626B1 (de) | 2001-11-02 | 2001-11-02 | Flüssigkeitsringpumpe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP01126117A EP1308626B1 (de) | 2001-11-02 | 2001-11-02 | Flüssigkeitsringpumpe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1308626A1 true EP1308626A1 (de) | 2003-05-07 |
| EP1308626B1 EP1308626B1 (de) | 2004-06-16 |
Family
ID=8179151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01126117A Expired - Lifetime EP1308626B1 (de) | 2001-11-02 | 2001-11-02 | Flüssigkeitsringpumpe |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1308626B1 (de) |
| AT (1) | ATE269492T1 (de) |
| DE (1) | DE50102618D1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486045A (zh) * | 2013-10-16 | 2014-01-01 | 宁波爱发科真空技术有限公司 | 罗茨泵机械密封的润滑结构 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1781375A (en) * | 1929-09-03 | 1930-11-11 | Lucian F Easton | Rotary air pump |
| GB1509661A (en) * | 1976-02-11 | 1978-05-04 | Grayden Pty Ltd P | Water ring vacuum pumps |
| US5096396A (en) * | 1991-03-05 | 1992-03-17 | V. Q. Corporation | Rotary apparatus having passageways to clean seal chambers |
| DE4229017A1 (de) * | 1992-09-03 | 1994-03-10 | Sihi Gmbh & Co Kg | Flüssigkeitsringverdichter in Motorblock- oder Motorträgerausführung |
| US5615997A (en) * | 1995-09-07 | 1997-04-01 | Kvaerner Pulping Technologies Aktiebolag | Pump for pumping fibrous pulp suspension |
-
2001
- 2001-11-02 AT AT01126117T patent/ATE269492T1/de not_active IP Right Cessation
- 2001-11-02 EP EP01126117A patent/EP1308626B1/de not_active Expired - Lifetime
- 2001-11-02 DE DE50102618T patent/DE50102618D1/de not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1781375A (en) * | 1929-09-03 | 1930-11-11 | Lucian F Easton | Rotary air pump |
| GB1509661A (en) * | 1976-02-11 | 1978-05-04 | Grayden Pty Ltd P | Water ring vacuum pumps |
| US5096396A (en) * | 1991-03-05 | 1992-03-17 | V. Q. Corporation | Rotary apparatus having passageways to clean seal chambers |
| DE4229017A1 (de) * | 1992-09-03 | 1994-03-10 | Sihi Gmbh & Co Kg | Flüssigkeitsringverdichter in Motorblock- oder Motorträgerausführung |
| US5615997A (en) * | 1995-09-07 | 1997-04-01 | Kvaerner Pulping Technologies Aktiebolag | Pump for pumping fibrous pulp suspension |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486045A (zh) * | 2013-10-16 | 2014-01-01 | 宁波爱发科真空技术有限公司 | 罗茨泵机械密封的润滑结构 |
| CN103486045B (zh) * | 2013-10-16 | 2016-04-13 | 宁波爱发科真空技术有限公司 | 罗茨泵机械密封的润滑结构 |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE269492T1 (de) | 2004-07-15 |
| DE50102618D1 (de) | 2004-07-22 |
| EP1308626B1 (de) | 2004-06-16 |
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