EP2401504A2 - Pompe à vide à anneau liquide - Google Patents

Pompe à vide à anneau liquide

Info

Publication number
EP2401504A2
EP2401504A2 EP10708492A EP10708492A EP2401504A2 EP 2401504 A2 EP2401504 A2 EP 2401504A2 EP 10708492 A EP10708492 A EP 10708492A EP 10708492 A EP10708492 A EP 10708492A EP 2401504 A2 EP2401504 A2 EP 2401504A2
Authority
EP
European Patent Office
Prior art keywords
filter
vacuum pump
ring vacuum
liquid
pump
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
Application number
EP10708492A
Other languages
German (de)
English (en)
Other versions
EP2401504B1 (fr
Inventor
Detlef Gneuss
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gneuss GmbH
Original Assignee
Gneuss Kunststofftechnik GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gneuss Kunststofftechnik GmbH filed Critical Gneuss Kunststofftechnik GmbH
Publication of EP2401504A2 publication Critical patent/EP2401504A2/fr
Application granted granted Critical
Publication of EP2401504B1 publication Critical patent/EP2401504B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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 vacuum pump for degassing plastic melts, with a pump inlet, are sucked at the gases and a pump outlet, are blown through the gases, and with a circuit for the compression fluid, in which a replaceable filter cartridge for filtering coarse impurities from the Compression fluid is provided, and optionally with a precondensation before the pump inlet for filtering fine impurities.
  • Such liquid vacuum pumps are e.g. used for extruder degassing.
  • contaminants such as Melt particles, etc.
  • Both the toxic components of the gases and the impurities are largely absorbed by the compression fluid.
  • the compression fluid in a circuit containing a replaceable filter cartridge, z. B. has a candle filter to clean.
  • the disadvantage here is that when the candle filter is clogged after more or less long life, the circuit must be interrupted so that the candle filter can be changed.
  • both coarse and fine particles are to be eliminated, two filter units are required.
  • the compression fluid circuit must be interrupted and possibly the whole liquid ring vacuum pump stopped.
  • two of the costly capacitors are usually provided; wherein the one capacitor may be in operation, while the second capacitor is expensive, e.g. must be cleaned with solvents and its waste is added to the hazardous waste.
  • DE 41 18 787 A1 discloses a process-integrated operating fluid cleaning system for compressors in which the operating fluid of the compressor is cleaned by means of a pervaporation membrane module.
  • a membrane is used, through which the contaminated operating fluid can penetrate. After penetration of the membrane, the impurities evaporate on the backside of the membrane. Thus, only evaporating impurities can be removed from the compression fluid here.
  • polyester melts are to be degassed, not only the impurities but also toxic impurities are sucked in by the liquid ring vacuum pump. These quantities of water also pass into the compression fluid. This water must be removed from the circulation of the compression fluid. To ensure that this water does not have to be disposed of as hazardous waste, a particularly thorough cleaning of the compression fluid must be ensured.
  • the invention is therefore based on the object, a liquid ring vacuum pump to be designed so that it can continue to work uninterrupted even with a filter change and the Kompressions remplikeitsniklauf need not be interrupted. Furthermore, the aim is that permanent stable process conditions arise, the handling of the filter system is simple and inexpensive and can be designed to be energy-saving and environmentally friendly.
  • the Kompressions protestkeits- circuit is always closed and has only a continuous filter
  • the filter may be formed as needed as a fine or fine filter.
  • the ultrafine filter can of course cause the fine filtering with.
  • the fine filter is designed so that it even absorbs the toxic ingredients of the compression fluid, so that the expensive, and consuming to operate precondensation can be omitted.
  • the filter can be a hollow bed filter working with continuous flow filter cloth or else a backwashable rotary or sliding filter.
  • the filter cloth which emerges from the filter after the filter has been discharged, can be cleaned. But it is also possible to dispose of the filter cloth as hazardous waste and always provide a sufficient supply of new filter cloth.
  • the ultrafine filters have filter finenesses ⁇ 5 ⁇ . If filters with filter finenesses> 5 ⁇ are used, it has been found that the coarse impurities and even finer suspended matter are separated from the compression fluid. With filter sizes ⁇ 5 ⁇ it is achieved that pollutants dissolved even in the compression fluid are filtered out of the compression fluid. Thus, from an environmental point of view, an optimal cleaning of the compression fluid can be achieved.
  • the continuous filter is associated with a control device, which causes a change of the filter element depending on the degree of contamination and / or the filter time and / or the pressure conditions on the filter and / or the flow rate ratios on the filter.
  • a control device which causes a change of the filter element depending on the degree of contamination and / or the filter time and / or the pressure conditions on the filter and / or the flow rate ratios on the filter.
  • an operator monitors the degree of contamination of the filter and manually causes a further switching of the filter elements.
  • a connection to the liquid ring vacuum pump can be saved, whereby the liquid ring vacuum pump can be made smaller.
  • a liquid separator is provided, which may be arranged outside of the liquid ring vacuum pump.
  • the liquid ring vacuum pump is also particularly suitable for degassing polyester melts, in which the sucked gases have relatively large amounts of water.
  • the invention will be explained in more detail with reference to a drawing.
  • the figure shows a liquid ring vacuum pump 1 with a pump inlet 2 and a pump outlet 3.
  • the liquid ring vacuum pump 1 is integrated into a circuit 4, in which the compression fluid is worked up.
  • the circuit 4 has a continuously operating filter 5, the motor 6 exchanges the filter element 7 via an indicated control device 8 in response to the contamination of the filter element.
  • the pump connection 3 is also designed as a connection of the circuit 4 at the same time.
  • a liquid separator 9 the exhaust air is separated from the compression liquid, which from the liquid separator 9 to the continuously working
  • page 5 border filter 5 passes. Furthermore, a cooling device 10 is provided, via which the compression fluid is brought to a desired level.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Degasification And Air Bubble Elimination (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

L'invention concerne une pompe à vide à anneau liquide (1) pour dégazer des matières plastiques fondues, cette pompe comprenant un orifice d'admission (2) par lequel les gaz sont aspirés et un orifice de sortie (3) par lequel les gaz sont évacués, ainsi qu'un circuit (4) pour le liquide de compression, ce circuit comprenant une cartouche filtrante interchangeable pour filtrer les grosses impuretés présentes dans le liquide de compression et éventuellement une installation de précondensation en amont de l'orifice d'admission pour filtrer les petites impuretés présentes dans le liquide de compression. L'objectif de l'invention est de perfectionner cette pompe de sorte qu'elle puisse continuer à fonctionner sans interruption en cas de changement de filtre et sans nécessité de coupure du circuit de liquide de compression, des conditions de processus stables et durables devant être obtenues et la manipulation du système de filtration devant être simple, économe en énergie et non polluante. À cet effet, le circuit de liquide de compression (4) est constamment fermé et présente uniquement un filtre fin et/ou ultrafin à fonctionnement continu (5) qui remplace aussi bien la cartouche filtrante interchangeable que l'installation de précondensation.
EP10708492.3A 2009-02-27 2010-02-26 Pompe à vide à anneau liquide Active EP2401504B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009010702A DE102009010702A1 (de) 2009-02-27 2009-02-27 Flüssigkeitsring-Vakuumpumpe
PCT/EP2010/001205 WO2010097233A2 (fr) 2009-02-27 2010-02-26 Pompe à vide à anneau liquide pour dégazer des matières plastiques fondues

Publications (2)

Publication Number Publication Date
EP2401504A2 true EP2401504A2 (fr) 2012-01-04
EP2401504B1 EP2401504B1 (fr) 2018-09-19

Family

ID=42371741

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10708492.3A Active EP2401504B1 (fr) 2009-02-27 2010-02-26 Pompe à vide à anneau liquide

Country Status (7)

Country Link
US (1) US8608451B2 (fr)
EP (1) EP2401504B1 (fr)
CN (1) CN102333958B (fr)
BR (1) BRPI1009756B1 (fr)
DE (1) DE102009010702A1 (fr)
TR (1) TR201815888T4 (fr)
WO (1) WO2010097233A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013211084A1 (de) * 2013-06-14 2014-12-18 Siemens Aktiengesellschaft Verfahren zum Betrieb einer Wärmepumpe und Wärmepumpe
CN103480193B (zh) * 2013-09-27 2014-12-10 常熟市华能水处理设备有限责任公司 凝结水精处理器
CN104295519A (zh) * 2014-10-17 2015-01-21 陕西科技大学 一种控制装置、水环真空泵及其控制方法
FR3042236B1 (fr) * 2015-10-08 2019-09-06 Ortec Expansion Procede et dispositif pour le pompage d'un produit par aspiration.
DE102016003428B4 (de) 2016-03-21 2022-02-10 Richard Bethmann Wärmepumpenanlage
CN110354650A (zh) * 2019-07-30 2019-10-22 云南雷允上理想药业有限公司 一种真空系统除湿机组

Family Cites Families (17)

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US943908A (en) * 1908-11-30 1909-12-21 Frank Baily Apparatus for straining liquids.
ES354847A1 (es) * 1968-05-08 1969-11-01 Bernardini Cost Mecc Spa Procedimiento de filtracion continua en vacio en circuito cerrado mediante el empleo de un filtro rotativo de tela filtrante continua especialmente guiada y lavada.
US3574509A (en) 1969-02-14 1971-04-13 Zurn Ind Inc Backwash filter
US3664509A (en) * 1969-11-04 1972-05-23 Trw Inc Fluids flow system with self-flushing revolving filter
DE2710445A1 (de) * 1977-03-10 1978-09-14 Peter Behr Kontinuierlich arbeitendes filter zum entfernen von flusen, fasern o.dgl. aus einem fluessigkeitsstrom
DE4118787A1 (de) * 1991-06-07 1992-12-24 Sihi Gmbh & Co Kg Prozessintegriertes betriebsfluessigkeitsreinigungssystem fuer verdichter
DE29615006U1 (de) * 1996-08-29 1996-10-17 Lipp, Herbert, 76327 Pfinztal Kreislaufeinrichtung für Wasserringpumpen
US6692234B2 (en) * 1999-03-22 2004-02-17 Water Management Systems Pump system with vacuum source
CN2384664Y (zh) * 1999-07-23 2000-06-28 河海大学 过滤器全自动反冲洗装置
DE20010383U1 (de) * 2000-06-09 2000-08-31 Irema-Filter GmbH, 92353 Postbauer-Heng Filteranordnung
AU2001284325A1 (en) * 2000-08-31 2002-03-13 Barthlo Von_Moltitz Harmse A method of treating an effluent gas stream, and apparatus for use in such method
AT410942B (de) * 2001-10-29 2003-08-25 Fellinger Markus Verfahren und vorrichtung zur erhöhung der grenzviskosität von polyester
DE10225601A1 (de) * 2002-06-07 2003-12-24 Gneuss Kunststofftechnik Gmbh Reinigungsvorrichtung für Siebscheiben
DE10226463A1 (de) * 2002-06-13 2004-01-08 Faudi Filtersysteme Gmbh Filtereinrichtung und Verfahren zur Abreinigung von feinporigen Filtermitteln
CN2591296Y (zh) * 2002-12-29 2003-12-10 山东晨鸣纸业集团股份有限公司 水环式真空泵供水系统
FR2864523B1 (fr) * 2003-12-24 2006-12-22 Rivard Procede permettant d'empecher la formation d'une atmosphere insalubre et/ou explosive dans l'environnement d'une citerne ainsi que dispositif permettant la mise en oeuvre de ce procede
WO2006029884A1 (fr) * 2004-09-17 2006-03-23 Basf Aktiengesellschaft Procede permettant de faire fonctionner un compresseur a anneau liquide

Non-Patent Citations (1)

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Title
See references of WO2010097233A2 *

Also Published As

Publication number Publication date
WO2010097233A2 (fr) 2010-09-02
BRPI1009756A2 (pt) 2016-03-15
CN102333958B (zh) 2015-05-13
US8608451B2 (en) 2013-12-17
CN102333958A (zh) 2012-01-25
EP2401504B1 (fr) 2018-09-19
BRPI1009756B1 (pt) 2020-09-15
WO2010097233A3 (fr) 2011-04-28
US20110300005A1 (en) 2011-12-08
TR201815888T4 (tr) 2018-11-21
DE102009010702A1 (de) 2010-09-02

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