EP0822336B1 - Method for stabilizing the temperature of gear pumps - Google Patents
Method for stabilizing the temperature of gear pumps Download PDFInfo
- Publication number
- EP0822336B1 EP0822336B1 EP97119483A EP97119483A EP0822336B1 EP 0822336 B1 EP0822336 B1 EP 0822336B1 EP 97119483 A EP97119483 A EP 97119483A EP 97119483 A EP97119483 A EP 97119483A EP 0822336 B1 EP0822336 B1 EP 0822336B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- temperature
- medium
- housing
- stabilizing
- shafts
- 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.)
- Expired - Lifetime
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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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0096—Heating; Cooling
Definitions
- the present invention relates to a method according to Preamble of claim 1.
- Heat exchanger provided, wherein the heat exchanger in Housing via a first line system to a heating unit and the heat exchanger in the shaft via a second Line system are connected to a cooling unit.
- Heating unit is the housing, which in operation to the Environment gives off heat, at a given temperature held.
- cooling unit is the by friction between shaft and bearing arising and released Energy compensated, causing a local overheating of the Good to be avoided.
- Such a temperature stabilization system is known from German patent application with the publication number DE 37 30 991 A1 discloses, wherein the to be cooled or heated housing parts via a piping system in Parallel circuit supplied with a temperature control medium become.
- the present invention is therefore the task to provide a method that mentioned above Disadvantages not.
- the invention has the following advantages: from the tempering initially the waves and / or the Slide bearing and then the at least one housing part of the Medium for the purpose of stabilizing the temperature are flowed through, which by the in the plain bearing rotating shaft generated waste heat through the medium in the Housing transported, i. the shaft and the housing act like a temperature aggregate, bringing the system is greatly simplified, which is particularly in lower costs manifested.
- Fig. 1 shows - in a schematic representation - a known System for stabilizing the temperature of one with a Gear pump funded conveyed.
- the gear pump consists of at least one housing part G, in which in particular, two waves W are included, each at least in one, preferably in two plain bearings L are rotatably mounted.
- gear pumps are particularly suitable for conveying highly viscous liquids such as for example, polymer melts. It is to Make sure that the temperature of the conveyed material is as high as possible stable corresponds to a certain value, in which neither one Decomposition - which occurs at too high temperatures - still a blockage of the gear pump - e.g. by setting the slide bearing - enter through a viscous conveyed material can, what at too low temperatures of the transported material is possible.
- These were in a known manner in the housing G and in the shaft W of the gear pump heat exchanger provided via the supply systems ZS1 and ZS2 each with Temperingaggregaten T1 and T2 are connected.
- the Temperieraggregaten T1 and T2 is a medium M on a desired temperature heated or cooled and with Help of supply systems ZS1 and ZS2 to the heat exchanger in the shaft W or in the housing G supplied.
- the known system has the disadvantage that for the Separate supply systems ZS1 and ZS2 also two Temperingaggregate T1 and T2 are provided.
- the advantage the independent temperature setting for shaft W and Housing G are extremely expensive for the Temperingaggregate T1 and T2 opposite.
- Figs. 2 to 4 are different Devices for adjusting and stabilizing the Temperature of the transported material shown. All have three variants a single tempering TA to which the supply systems ZS to the heat exchangers in the housing G or in the shaft W in different ways are connected.
- Fig. 2 is a known system shown; in which the heat exchanger parallel to the Temperieraggregat TA are connected, that is, that the Medium M in the supply systems ZS before the corresponding heat exchanger the same temperature having.
- Fig. 4 is an inventive embodiment shown, in which a series connection of the two Heat exchanger is provided, because first, the medium M - starting from the temperature control unit TA - through the Heat exchanger in the shaft and then through the Heat exchanger in the housing G out.
- the medium M - starting from the temperature control unit TA - through the Heat exchanger in the shaft and then through the Heat exchanger in the housing G out.
- the heat generated in the shaft W through the medium M is transported into the housing G, i. Shaft W and housing G act like a temperature control unit.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft ein Verfahren nach dem Oberbegriff des Patentanspruchs 1.The present invention relates to a method according to Preamble of claim 1.
Bei der Verwendung von gleitgelagerten, fördergutgeschmierten Zahnradpumpen zur Förderung von Polymeren ist die Temperatur des Fördergutes von grosser Bedeutung, da bei zu tiefer Temperatur die Viskosität zu hoch ist und bei zu hoher Temperatur Zersetzungserscheinungen auftreten können. Daher wird versucht, die Temperatur des Fördermediums in einem bestimmten Bereich zu halten. Dadurch wird es ermöglicht, dass das Betriebsfenster der Zahnradpumpe erheblich erweitert werden kann.When using sliding bearings, conveyer lubricated gear pumps for the promotion of Polymers, the temperature of the transported material of greater Meaning, because too low temperature, the viscosity too is high and too high a temperature Decomposition phenomena may occur. Therefore, will trying to get the temperature of the pumped medium in one to hold certain area. This makes it possible that the operating window of the gear pump considerably can be extended.
Zur Temperaturstabilisierung werden deshalb im Gehäuse der Zahnradpumpe und in der Welle in bekannter Weise Wärmetauscher vorgesehen, wobei der Wärmetauscher im Gehäuse über ein erstes Leitungssystem an ein Heizaggregat und der Wärmetauscher in der Welle über ein zweites Leitungssystem an ein Kühlgerät angeschlossen sind. Mit dem Heizaggregat wird das Gehäuse, das im Betrieb an die Umgebung Wärme abgibt, auf einer vorgegebenen Temperatur gehalten. Mit dem Kühlaggregat wird die durch Reibung zwischen Welle und Lager entstehende und frei werdende Energie kompensiert, womit eine lokale Überhitzung des Fördergutes vermieden werden soll.For temperature stabilization are therefore in the housing of the Gear pump and in the shaft in a known manner Heat exchanger provided, wherein the heat exchanger in Housing via a first line system to a heating unit and the heat exchanger in the shaft via a second Line system are connected to a cooling unit. With the Heating unit is the housing, which in operation to the Environment gives off heat, at a given temperature held. With the cooling unit is the by friction between shaft and bearing arising and released Energy compensated, causing a local overheating of the Good to be avoided.
Ein derartiges Temperaturstabilisierungssystem ist aus der deutschen Patentanmeldung mit der Veröffentlichungsnummer DE 37 30 991 A1 bekannt, wobei die zu kühlenden bzw. zu beheizenden Gehäuseteile über ein Rohrleitungssystem in Parallelschaltung mit einem Temperiermedium versorgt werden.Such a temperature stabilization system is known from German patent application with the publication number DE 37 30 991 A1 discloses, wherein the to be cooled or heated housing parts via a piping system in Parallel circuit supplied with a temperature control medium become.
Das bekannte Verfahren zur Temperatureinstellung ist jedoch aufwendig und mit entsprechend hohen Kosten verbunden.However, the known method of temperature adjustment is consuming and associated with correspondingly high costs.
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren anzugeben, das obenerwähnte Nachteile nicht aufweist.The present invention is therefore the task to provide a method that mentioned above Disadvantages not.
Diese Aufgabe wird durch die im kennzeichnenden Teil des Patentanspruchs 1 angegebenen Massnahmen gelöst. Eine Vorrichtung zur Durchführung des Verfahrens ist in Anspruch 2 angegeben.This object is achieved by the in the characterizing part of Patent claim 1 specified measures solved. A Apparatus for carrying out the method is in use 2 indicated.
Die Erfindung weist folgende Vorteile auf: Indem ausgehend vom Temperieraggregat zunächst die Wellen und/oder die Gleitlager und danach das mindestens eine Gehäuseteil vom Medium zum Zweck der Stabilisierung der Temperatur durchflossen werden, wird die durch die im Gleitlager drehende Welle erzeugte Abwärme durch das Medium in das Gehäuse transportiert, d.h. die Welle und das Gehäuse agieren wie ein Temperaturaggregat, womit das System erheblich vereinfacht wird, was sich insbesondere in geringeren Kosten manifestiert.The invention has the following advantages: from the tempering initially the waves and / or the Slide bearing and then the at least one housing part of the Medium for the purpose of stabilizing the temperature are flowed through, which by the in the plain bearing rotating shaft generated waste heat through the medium in the Housing transported, i. the shaft and the housing act like a temperature aggregate, bringing the system is greatly simplified, which is particularly in lower costs manifested.
Die Erfindung wird nachfolgend anhand von Zeichnungen beispielsweise näher erläutert. Dabei zeigen
- Fig. 1
- in schematischer Darstellung ein bekanntes System zur Stabilisierung der Temperatur des Fördergutes mit zwei Temperieraggregaten und
- Fig. 2 bis 4
- in schematischer Darstellung verschiedene Systeme zur Stabilisierung der Temperatur des Fördergutes mit einem Temperieraggregat.
- Fig. 1
- a schematic representation of a known system for stabilizing the temperature of the conveyed material with two temperature control units and
- Fig. 2 to 4
- schematic representation of various systems for stabilizing the temperature of the conveyed material with a tempering.
Fig. 1 zeigt - in schematischer Darstellung - ein bekanntes System zur Stabilisierung der Temperatur eines mit einer Zahnradpumpe geförderten Fördergutes. Die Zahnradpumpe besteht dabei aus mindestens einem Gehäuseteil G, in dem insbesondere zwei Wellen W enthalten sind, die je mindestens in einem, vorzugsweise in zwei Gleitlagern L drehbar gelagert sind. Für weiterführende Angaben zum Aufbau von Zahnradpumpen sei beispielsweise auf das Maag-Taschenbuch, 2. Auflage, 1985, Seiten 279 ff. verwiesen.Fig. 1 shows - in a schematic representation - a known System for stabilizing the temperature of one with a Gear pump funded conveyed. The gear pump consists of at least one housing part G, in which in particular, two waves W are included, each at least in one, preferably in two plain bearings L are rotatably mounted. For further information on Construction of gear pumps is for example on the Maag paperback, 2nd edition, 1985, pages 279 ff. Referenced.
Wie eingangs erwähnt, eignen sich Zahnradpumpen besonders zur Förderung von hochviskosen Flüssigkeiten wie beispielsweise von Polymerschmelzen. Dabei ist darauf zu achten, dass die Temperatur des Fördergutes möglichst stabil einem bestimmten Wert entspricht, bei dem weder eine Zersetzung - was bei zu hohen Temperaturen vorkommt - noch eine Blockierung der Zahnradpumpe - z.B. durch Festsetzen der Gleitlager - durch ein zähflüssiges Fördergut eintreten kann, was bei zu tiefen Temperaturen des Fördergutes möglich ist. Dazu wurden in bekannter Weise im Gehäuse G und in der Welle W der Zahnradpumpe Wärmetauscher vorgesehen, die über Zuleitungssysteme ZS1 und ZS2 je mit Temperieraggregaten T1 und T2 verbunden sind. In den Temperieraggregaten T1 und T2 wird ein Medium M auf eine gewünschten Temperatur aufgeheizt bzw. abgekühlt und mit Hilfe der Zuleitungssystemen ZS1 und ZS2 dem Wärmetauscher in der Welle W bzw. im Gehäuse G zugeführt.As mentioned above, gear pumps are particularly suitable for conveying highly viscous liquids such as for example, polymer melts. It is to Make sure that the temperature of the conveyed material is as high as possible stable corresponds to a certain value, in which neither one Decomposition - which occurs at too high temperatures - still a blockage of the gear pump - e.g. by setting the slide bearing - enter through a viscous conveyed material can, what at too low temperatures of the transported material is possible. These were in a known manner in the housing G and in the shaft W of the gear pump heat exchanger provided via the supply systems ZS1 and ZS2 each with Temperingaggregaten T1 and T2 are connected. In the Temperieraggregaten T1 and T2 is a medium M on a desired temperature heated or cooled and with Help of supply systems ZS1 and ZS2 to the heat exchanger in the shaft W or in the housing G supplied.
Das bekannte System hat den Nachteil, dass für die getrennten Zuleitungssysteme ZS1 und ZS2 auch zwei Temperieraggregate T1 und T2 vorzusehen sind. Dem Vorteil der unabhängigen Temperatureinstellung für Welle W und Gehäuse G stehen ungemein hohe Kosten für die Temperieraggregate T1 und T2 gegenüber.The known system has the disadvantage that for the Separate supply systems ZS1 and ZS2 also two Temperingaggregate T1 and T2 are provided. The advantage the independent temperature setting for shaft W and Housing G are extremely expensive for the Temperingaggregate T1 and T2 opposite.
In den Fig. 2 bis 4 sind verschiedene Vorrichtungen zur Einstellung und Stabilisierung der Temperatur des Fördergutes dargestellt. Dabei weisen alle drei Ausführungsvarianten ein einziges Temperieraggregat TA auf, an das die Zuleitungssysteme ZS zu den Wärmetauschern im Gehäuse G oder in der Welle W auf verschiedene Weise angeschlossen sind. So ist in Fig. 2 ein bekanntes System dargestellt; bei dem die Wärmetauscher parallel an das Temperieraggregat TA angeschlossen sind, d.h., dass das Medium M in den Zuleitungssystemen ZS vor dem entsprechenden Wärmetauscher die gleiche Temperatur aufweist.In Figs. 2 to 4 are different Devices for adjusting and stabilizing the Temperature of the transported material shown. All have three variants a single tempering TA to which the supply systems ZS to the heat exchangers in the housing G or in the shaft W in different ways are connected. Thus, in Fig. 2 is a known system shown; in which the heat exchanger parallel to the Temperieraggregat TA are connected, that is, that the Medium M in the supply systems ZS before the corresponding heat exchanger the same temperature having.
In gleicher Weise zeigt auch eine bekannte Vorrichtung gemäss Fig. 3 eine Parallelschaltung der Wärmetauscher. Allerdings erfolgt hier durch ein Zusammenführen der Leitungen vor den Wärmetauschern eine Durchmischung und mithin ein Temperaturausgleich der Medien M vor dem Temperieraggregat TA. In the same way shows also a known device according to FIG. 3 a parallel connection of the heat exchangers. Indeed takes place here by merging the lines before the Heat exchangers a mixing and therefore one Temperature compensation of the media M before the temperature control unit TA.
Schliesslich ist in Fig. 4 eine erfindungsgemässe Ausführungsform dargestellt, bei der eine Serieschaltung der beiden Wärmetauscher vorgesehen ist, denn zunächst wird das Medium M - ausgehend vom Temperieraggregat TA - durch den Wärmetauscher in der Welle und anschliessend durch den Wärmeaustauscher im Gehäuse G geführt. Bei dieser Ausführungsform wird im speziellen die Möglichkeit ausgenutzt, dass die in der Welle W erzeugte Abwärme durch das Medium M in das Gehäuse G transportiert wird, d.h. Welle W und Gehäuse G agieren wie ein Temperieraggregat.Finally, in Fig. 4 is an inventive embodiment shown, in which a series connection of the two Heat exchanger is provided, because first, the medium M - starting from the temperature control unit TA - through the Heat exchanger in the shaft and then through the Heat exchanger in the housing G out. At this Embodiment becomes the possibility in particular exploited that the heat generated in the shaft W through the medium M is transported into the housing G, i. Shaft W and housing G act like a temperature control unit.
Es wird darauf hingewiesen, dass in einer weiteren Ausführungsform der Erfindung anstelle des Wärmeaustauschers in der Welle W auch ein entsprechender Wärmeaustauscher im Gleitlager L verwendet wird, um eine Überhitzung zu vermeiden. Darüber hinaus besteht die Möglichkeit, auch die Kombination von Wärmeaustauschern in der Welle W und im Gleitlager L gleichzeitig vorzusehen.It should be noted that in another Embodiment of the invention instead of Heat exchanger in the wave W also a corresponding Heat exchanger in plain bearing L is used to make a Avoid overheating. In addition, there is the Possibility also the combination of heat exchangers in the shaft W and the plain bearing L at the same time.
Claims (2)
- Method for stabilizing the temperature in a gear pump lubricated by the medium being delivered, consisting of at least one housing part (G) having at least two slide bearings (L) in which shafts (W) are mounted and lubricated by the medium being delivered, the method consisting in thatcharacterized in that,a medium (M) is adjusted to a predetermined temperature in a temperature stabilizer (TA),starting from the temperature stabilizer (TA), the medium (M) first flows through the shafts (W) and/or the slide bearings (L) and, thereafter, the at least one housing part (G) to stabilize the temperature.
- Apparatus using the method according to claim 1, the apparatus consisting of a gear pump with at least a housing part (G), at least two shafts (W) and at least two slide bearings (L), characterized in that the at least one housing part (G), the shafts (W) and/or the slide bearings (L) have heat exchanging line systems, in that a temperature stabilizer (TA) is provided which is connectable over a supply line system (ZS) with the line system, and in that the line system through the at least one housing part (G) and the line system through the shafts (W) and/or through the slide bearings (L) are connected in series to the supply line system (ZS).
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT97119483T ATE238495T1 (en) | 1997-11-07 | 1997-11-07 | METHOD FOR TEMPERATURE STABILIZATION IN GEAR PUMPS |
| DE59709888T DE59709888D1 (en) | 1997-11-07 | 1997-11-07 | Process for temperature stabilization in gear pumps |
| EP97119483A EP0822336B1 (en) | 1997-11-07 | 1997-11-07 | Method for stabilizing the temperature of gear pumps |
| US09/188,175 US6280164B1 (en) | 1997-11-07 | 1998-11-09 | Method and apparatus for temperature stabilization in gear pumps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP97119483A EP0822336B1 (en) | 1997-11-07 | 1997-11-07 | Method for stabilizing the temperature of gear pumps |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0822336A2 EP0822336A2 (en) | 1998-02-04 |
| EP0822336A3 EP0822336A3 (en) | 1998-05-20 |
| EP0822336B1 true EP0822336B1 (en) | 2003-04-23 |
Family
ID=8227587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97119483A Expired - Lifetime EP0822336B1 (en) | 1997-11-07 | 1997-11-07 | Method for stabilizing the temperature of gear pumps |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6280164B1 (en) |
| EP (1) | EP0822336B1 (en) |
| AT (1) | ATE238495T1 (en) |
| DE (1) | DE59709888D1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU1691501A (en) * | 1999-11-04 | 2001-05-14 | Alceru Schwarza Gmbh | Method and device for conveying a cellulose solution |
| EP1249608A1 (en) | 2001-10-24 | 2002-10-16 | Maag Pump Systems Textron AG | Device, like an extrusion machine, comprising a direct driven gear pump |
| EP1270946B1 (en) | 2002-09-17 | 2006-10-18 | Maag Pump Systems Textron AG | Device, like an extrusion machine, comprising a direct driven gear pump |
| US7011517B2 (en) * | 2003-09-19 | 2006-03-14 | Nickpick Enterprises, Llc | Apparatus and method for removing a removable tooth positioning appliance from the teeth of a patient |
| TW200634230A (en) * | 2005-02-19 | 2006-10-01 | Saurer Gmbh & Co Kg | Polymer melt gear pump |
| DE102006033028A1 (en) * | 2006-07-17 | 2008-01-24 | Vmi - Az Extrusion Gmbh | Extruder-gear pump combination, especially for forming tire tread strips, includes cooling channel switchable between higher and lower temperature supplies of coolant |
| US9482225B2 (en) | 2012-06-04 | 2016-11-01 | Honeywell International Inc. | Gear pump, pumping apparatus including the same, and aircraft fuel system including gear pump |
| EP3382203B1 (en) | 2017-03-30 | 2024-05-15 | Roper Pump Company LLC | Progressive cavity pump with integrated heating jacket |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB675621A (en) * | 1949-06-30 | 1952-07-16 | American Viscose Corp | Improvements in or relating to the production of artificial filaments |
| CA940897A (en) * | 1969-09-11 | 1974-01-29 | Norman L. Foley | Vacuum pump |
| JPS55123316A (en) * | 1979-03-13 | 1980-09-22 | Minoru Sasaki | Rotary internal combustion engine |
| CA1125712A (en) * | 1979-04-16 | 1982-06-15 | Walter H. Cobbs, Jr. | Method and apparatus for dispensing heat sensitive liquid polymeric compositions |
| DE2923175A1 (en) * | 1979-06-08 | 1980-12-11 | Lederle Pumpen & Maschf | Rotary displacement or centrifugal pump - is driven via magnetic coupling with air gap bush hermetically sealing pump from drive section |
| FI62713C (en) * | 1979-10-22 | 1983-02-10 | Valmet Oy | KUGGHJULSPUMP OCH / ELLER -MOTOR |
| JPS5688990A (en) * | 1979-12-20 | 1981-07-18 | Mazda Motor Corp | Shart sealing part cooling device for pump for electrodeposition coating |
| US4541792A (en) * | 1983-05-09 | 1985-09-17 | Nrm Corporation | Dual loop temperature control system for rubber and other extruders with optional connection for heat pump |
| US4955352A (en) * | 1986-02-26 | 1990-09-11 | Aisin Seiki Kabushiki Kaisha | Combined supercharger and supercharger coolant pump for an internal combustion engine |
| DE3730991A1 (en) * | 1987-09-16 | 1989-04-06 | Troester Maschf Paul | Process and device for controlling heat fluxes |
| JPH0645135B2 (en) * | 1990-10-08 | 1994-06-15 | 株式会社神戸製鋼所 | Gear pump for molten resin |
| EP0607999B1 (en) * | 1994-02-17 | 1996-04-17 | Maag Pump Systems AG | Method of cooling the shaft of a gear pump rotor |
| JP3531212B2 (en) * | 1994-06-17 | 2004-05-24 | 株式会社島津製作所 | Gear pump |
| DE59509082D1 (en) * | 1995-09-18 | 2001-04-12 | Maag Pump Systems Textron Ag Z | Gear pump for conveying fluid media |
| ES2167472T3 (en) * | 1996-02-09 | 2002-05-16 | Maag Pump Systems Ag | GEAR PUMP. |
-
1997
- 1997-11-07 AT AT97119483T patent/ATE238495T1/en not_active IP Right Cessation
- 1997-11-07 DE DE59709888T patent/DE59709888D1/en not_active Expired - Fee Related
- 1997-11-07 EP EP97119483A patent/EP0822336B1/en not_active Expired - Lifetime
-
1998
- 1998-11-09 US US09/188,175 patent/US6280164B1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0822336A3 (en) | 1998-05-20 |
| EP0822336A2 (en) | 1998-02-04 |
| ATE238495T1 (en) | 2003-05-15 |
| US6280164B1 (en) | 2001-08-28 |
| DE59709888D1 (en) | 2003-05-28 |
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