EP0680562A1 - Machine a anneau liquide. - Google Patents
Machine a anneau liquide.Info
- Publication number
- EP0680562A1 EP0680562A1 EP94904567A EP94904567A EP0680562A1 EP 0680562 A1 EP0680562 A1 EP 0680562A1 EP 94904567 A EP94904567 A EP 94904567A EP 94904567 A EP94904567 A EP 94904567A EP 0680562 A1 EP0680562 A1 EP 0680562A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- liquid
- liquid ring
- relief passage
- machine
- ring machine
- 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
- 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
- F04C19/004—Details concerning the operating liquid, e.g. nature, separation, cooling, cleaning, control of the supply
Definitions
- the invention relates to a liquid ring machine according to the preamble of claim 1 or 2.
- Such a machine is known from DE-C-31 24 867. It is typical of this type of machine that the energy is transferred from the impeller to the pumped medium via a liquid ring formed from operating liquid. Since the operating fluid, as an energy source and as a sealing element, is in direct contact with the pumped medium, vapors are condensed, liquid and dirt particles are conveyed, hot gases are cooled and compression heat is absorbed by the operating fluid. If liquids are conveyed in the liquid ring, there is an increased power requirement and a deterioration in the running properties of the impeller, which can lead to accelerated wear of the impeller bearing.
- a reduction in the power consumption and, at the same time, improved running properties with the conveyance of liquids is to be brought about in the known machine in that a relief passage separated from the pressure slot of the control disk is provided in the control body designed as a flat control disk. This discharge passage is covered by the rotating liquid ring when liquid is also transported. No further details of the function of the relief passage can be found in the cited patent.
- the object of the invention is to create a liquid ring machine in which the total amount of liquid resulting from the usual operating liquid and the additional liquid obtained from the respective process can be kept as constant as possible, so that it has an approximately uniform liquid ring thickness Is selectable.
- connection between the relief passage and the operating liquid supply line, which runs outside the housing offers advantages in terms of accessibility and the cooling effect which can be achieved, whereas a connection located inside the housing leads to a compact design leads.
- Connection can be provided either in the housing or outside the housing.
- the connection can thus be adapted to the respective operating and installation conditions.
- connection between the relief passage and the operating fluid supply line is integrated in the side plate, there is no additional manufacturing effort for this connection.
- passages and bores in the pressurized machine housing are eliminated, which can lead to a reduction in the strength of the machine housing.
- Another advantage of this connection is that the excess operating fluid can flow off over a short connection path without further energy expenditure.
- a control element controls the supply of the operating liquid as a function of the quantity of liquid flowing through the relief passage.
- Hydraulic valves in particular ball valves or plate valves, are suitable as control elements.
- Valves of this type are passive elements which control the supply of operating fluid without further control elements, solely on the basis of the pressure conditions which arise.
- valves are accessible from the outside in their installed position, the valves can be adjusted according to the operating conditions. This also facilitates any maintenance work, for example as a result of operational pollution.
- only one valve for controlling the liquid ring thickness is required.
- the positioning of the valve has the effect that the valve releases the connection leading to the relief passage to the extent that it simultaneously throttles the supply of operating fluid.
- the liquid flowing out through the relief passage now supplements the operating liquid exactly by the proportion by which it has been reduced.
- the liquid carried in the liquid ring therefore also leads to a reduction in the operating liquid requirement.
- the machine can even be fed solely from the liquid flowing out through the relief passage.
- the valve is fully open and at the same time largely prevents the supply of operating fluid.
- connection between the relief passage and the operating fluid supply line does not require any appreciable additional manufacturing outlay, since the connection is made via at least one line channel provided in the side plate, which is already taken into account when the side plate is cast.
- the stuffing boxes used to seal the shaft must be cooled as a result of the rubbing stress.
- the liquid flowing out through the relief passage can, if a corresponding connection is provided, also be provided to relieve the stuffing box supply. In this way, the cooling of the stuffing boxes can be carried out entirely or additively by the liquid flowing out of the relief passage.
- FIG. 1 shows a liquid ring machine in an exploded view.
- FIG. 2 shows a plan view of a side plate of a liquid ring machine with a control element designed as a ball valve in the closed position.
- FIG. 3 shows a plan view of a partial view of the side plate of a liquid ring machine with a control element designed as a ball valve 4 shows a plan view of a partial view of the side plate of a liquid ring machine with a control element designed as a ball valve in the fully open position.
- FIG. 5 shows a plan view of a partial view of the side plate with a control element designed as a plate valve in the closed position
- FIG. 6 shows a plan view of a partial view of the side plate with a control element designed as a plate valve in a partially open position
- FIG. 7 shows a plan view of a partial view of the side plate with a plate valve designed
- the pumped medium is compressed and pushed out through a pressure slot 9 located in the control disc 6.
- the pumped medium compressed in this way then flows out through a pressure connection 10.
- part of the operating fluid required to build up the liquid ring is also expelled with the pumped medium.
- operating fluid must be supplied continuously via an operating fluid supply line 11.
- the operating fluid reaches the suction-side control disk area 14 of the liquid ring machine 1 via a channel system in the hub area 12 and corresponding passages 13 in the control disk 6.
- the excess operating liquid 20 is discharged through a relief passage located in the pressure-side control disk area 15
- the ball valve 18 is closed.
- the ball 22 of the ball valve 18 closes, under the influence of a spring 23, the connecting line 17 leading away from the relief passage.
- the ball 22 is pressed into the opening by the spring 23, which is supported on the wall opposite the mouth of the connecting line 17.
- the ball valve 18 does not impede the entry of operating fluid from outside the machine 1, for example from a storage container (not shown in the drawing).
- FIGS. 5-7 A control with a plate valve 19 analogous to the control with a ball valve 18 is shown in FIGS. 5-7.
- 5 shows a closed plate valve 19 for the operating case without liquid-side conveyance on the suction side.
- the connecting line 17 is closed, whereas the supply of operating fluid is unhindered.
- 6, the plate valve 19 is partially open.
- the portion of the self-sucked operating fluid 21 is reduced in favor of the excess liquid 20 flowing out of the relief passage 16 due to the narrowing of the cross section in the operating fluid feed line 11.
- the amount of operating fluid supplied in the hub area 12 thus does not change, so that the liquid ring thickness remains almost constant despite the liquid being conveyed.
- the plate valve 19 is fully opened.
- the excess liquid 20, which flows out of the connecting line 17, serves for the exclusive supply of operating liquid to the liquid ring machine 1.
- a quantity of liquid which exceeds the requirement for operating liquid can be discharged into a storage container located outside the liquid ring machine 1.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4301907A DE4301907A1 (de) | 1993-01-25 | 1993-01-25 | Flüssigkeitsringmaschine |
DE4301907 | 1993-01-25 | ||
PCT/DE1994/000021 WO1994017309A1 (fr) | 1993-01-25 | 1994-01-11 | Machine a anneau liquide |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0680562A1 true EP0680562A1 (fr) | 1995-11-08 |
EP0680562B1 EP0680562B1 (fr) | 1997-04-02 |
Family
ID=6478858
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94904567A Expired - Lifetime EP0680562B1 (fr) | 1993-01-25 | 1994-01-11 | Machine a anneau liquide |
Country Status (8)
Country | Link |
---|---|
US (1) | US5605445A (fr) |
EP (1) | EP0680562B1 (fr) |
JP (1) | JPH08505679A (fr) |
BR (1) | BR9406221A (fr) |
CA (1) | CA2154476A1 (fr) |
DE (2) | DE4301907A1 (fr) |
FI (1) | FI953540A (fr) |
WO (1) | WO1994017309A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6439865B1 (en) | 1998-04-30 | 2002-08-27 | Werner Rietschle Gmbh & Co. Kg | Vacuum pump |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19758340A1 (de) * | 1997-12-22 | 1999-07-08 | Gardner Denver Wittig Gmbh | Mehrflutige Flüssigkeitsringpumpe |
DE20016016U1 (de) * | 2000-09-15 | 2002-01-31 | Speck-Pumpenfabrik Walter Speck GmbH & Co. KG, 91154 Roth | Steuerdeckel für eine Flüssigkeitsringpumpe und mit derartigem Steuerdeckel versehene Pumpe |
US20040202549A1 (en) * | 2003-01-17 | 2004-10-14 | Barton Russell H. | Liquid ring pump |
GB0321455D0 (en) * | 2003-09-12 | 2003-10-15 | Aesseal Plc | Self regulating re-circulation system for use with vacuum pumps |
WO2006059577A1 (fr) * | 2004-12-01 | 2006-06-08 | Nippon Sheet Glass Company, Limited | Appareil de fabrication de verre et procédé de fabrication de verre |
DE102005043434A1 (de) * | 2005-09-13 | 2007-03-15 | Gardner Denver Elmo Technology Gmbh | Einrichtung zur Leistungsanpassung einer Flüssigkeitsringpumpe |
ATE404793T1 (de) * | 2006-05-11 | 2008-08-15 | Pompetravaini S P A | Einstufige flüssigkeitsringvakuumpumpe mit saug- und druckleitungen im zentralen gehäuse integriert. |
KR101581490B1 (ko) | 2008-12-18 | 2015-12-30 | 가드너 덴버 내쉬 엘엘씨 | 액체 링 펌프 내에 형성된 채널 및 액체 링 펌프의 실린더 |
US9689387B2 (en) * | 2012-10-30 | 2017-06-27 | Gardner Denver Nash, Llc | Port plate of a flat sided liquid ring pump having a gas scavenge passage therein |
CN114810597B (zh) * | 2022-05-11 | 2023-02-03 | 广东锦坤实业有限公司 | 一种脂肪酸加工的高效冰冻真空系统 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1904321A (en) * | 1931-06-01 | 1933-04-18 | Nash Engineering Co | Hydroturbine pumping apparatus |
DE675378C (de) * | 1936-02-29 | 1939-05-06 | Nash Engineering Co | Fluessigkeitsringpumpe |
BE664205A (fr) * | 1964-05-20 | |||
GB1509661A (en) * | 1976-02-11 | 1978-05-04 | Grayden Pty Ltd P | Water ring vacuum pumps |
DE3124867C2 (de) * | 1981-06-24 | 1983-11-17 | Siemens AG, 1000 Berlin und 8000 München | Flüssigkeitsring-Vakuumpumpe für gasförmige Medien |
DE3617344A1 (de) * | 1986-05-23 | 1987-11-26 | Siemens Ag | Verfahren zur herstellung einer steuerscheibe bzw. eines steuerschildes fuer eine fluessigkeitsringmaschine fuer aggressivere medien |
-
1993
- 1993-01-25 DE DE4301907A patent/DE4301907A1/de not_active Withdrawn
-
1994
- 1994-01-11 WO PCT/DE1994/000021 patent/WO1994017309A1/fr active IP Right Grant
- 1994-01-11 JP JP6516553A patent/JPH08505679A/ja active Pending
- 1994-01-11 BR BR9406221A patent/BR9406221A/pt not_active Application Discontinuation
- 1994-01-11 EP EP94904567A patent/EP0680562B1/fr not_active Expired - Lifetime
- 1994-01-11 DE DE59402303T patent/DE59402303D1/de not_active Expired - Fee Related
- 1994-01-11 US US08/491,985 patent/US5605445A/en not_active Expired - Fee Related
- 1994-01-11 CA CA002154476A patent/CA2154476A1/fr not_active Abandoned
-
1995
- 1995-07-24 FI FI953540A patent/FI953540A/fi unknown
Non-Patent Citations (1)
Title |
---|
See references of WO9417309A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6439865B1 (en) | 1998-04-30 | 2002-08-27 | Werner Rietschle Gmbh & Co. Kg | Vacuum pump |
Also Published As
Publication number | Publication date |
---|---|
BR9406221A (pt) | 1996-01-09 |
FI953540A0 (fi) | 1995-07-24 |
FI953540A (fi) | 1995-07-24 |
CA2154476A1 (fr) | 1994-08-04 |
EP0680562B1 (fr) | 1997-04-02 |
JPH08505679A (ja) | 1996-06-18 |
WO1994017309A1 (fr) | 1994-08-04 |
DE59402303D1 (de) | 1997-05-07 |
US5605445A (en) | 1997-02-25 |
DE4301907A1 (de) | 1994-07-28 |
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