EP0515451A1 - Systeme de preparation de refrigerants lubrifiants - Google Patents

Systeme de preparation de refrigerants lubrifiants

Info

Publication number
EP0515451A1
EP0515451A1 EP19910903885 EP91903885A EP0515451A1 EP 0515451 A1 EP0515451 A1 EP 0515451A1 EP 19910903885 EP19910903885 EP 19910903885 EP 91903885 A EP91903885 A EP 91903885A EP 0515451 A1 EP0515451 A1 EP 0515451A1
Authority
EP
European Patent Office
Prior art keywords
separator
expansion tank
overflow
processing system
cooling lubricant
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.)
Withdrawn
Application number
EP19910903885
Other languages
German (de)
English (en)
Inventor
Wolfgang Stephan
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.)
Henkel AG and Co KGaA
Original Assignee
Henkel AG and Co KGaA
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 Henkel AG and Co KGaA filed Critical Henkel AG and Co KGaA
Publication of EP0515451A1 publication Critical patent/EP0515451A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/0217—Separation of non-miscible liquids by centrifugal force
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
    • C10M175/04—Working-up used lubricants to recover useful products ; Cleaning aqueous emulsion based

Definitions

  • the invention relates to a processing system for cooling lubricants, in particular cooling lubricant emulsions, with a pump for conveying the cooling lubricant from the cooling lubricant container of a machine tool into a separator of the processing system.
  • Cooling lubricants of this type are contaminated with non-emulsified oils, solids of organic and inorganic nature and with microflora, consisting of bacteria and fungi, during use. Hydraulic oils, honing oils, protective oils and other amounts of oil also get into the emulsion. Although these oils float in the machine tanks because of their lower density on the surface of the liquid, they lead to unpleasant mixing zones with a water-in-oil emulsion character and, in the worst case, extract oil-soluble components of the emulsion. When these oils are emulsified, the properties of the emulsion deteriorate.
  • cooling lubricants are located in machine tanks, in central systems and associated circulating devices for machine tools in the metalworking industry.
  • the invention is therefore based on the object of further developing a treatment system of the type mentioned at the outset such that, by adjusting the operating parameters of the separator, an almost complete division of the used emulsion or of the used cooling lubricant into the three phases mentioned above is achieved over the long term becomes.
  • the invention is based, inter alia, on the knowledge that after the solid and liquid contaminants of the used cooling lubricant have separated in the machine tank of the respective machine, these contaminants are mixed back into the cooling lubricant within the suction pump. Since this mixing takes place unevenly, a permanent, optimal functioning of the separator cannot be achieved in the long run. Another reason for the disadvantage in the prior art lies in the uneven flow rate to the separator through the foam, which is found in the inflow line and the pump.
  • the used cooling lubricant runs out of the expansion tank into the separator by gravity.
  • a used cooling lubricant is thus fed to the separator under always the same conditions and practically always the same composition, so that a permanent optimum setting of the separator and thus a complete division of the used cooling lubricant into the three phases mentioned above is possible.
  • the height of the overflow edge of the overflow above the highest separator inlet height can be adjusted in order to be able to choose an inlet pressure which is matched to the separator size. Since the liquids separated in the separator are discharged in the free outlet, that is to say under atmospheric pressure, the inlet into the centrifuge should take place under a defined pressure without pressure fluctuations. These requirements are met by the system described.
  • the bottom of the expansion tank is inclined and has a drain at its lowest point. This allows the expansion tank to be completely emptied and cleaned.
  • the delivery line projects between the pump and the expansion tank and has several bores at this end, the sum of the bore cross-sections being the cross section of the end exceeds.
  • a strong flow within the expansion tank and swirling of deposited solids as well as an ingestion of the floating foreign oil are thus largely avoided.
  • the bores are aligned with the bottom of the expansion tank.
  • FIG. 1 shows an overview of part of the processing system according to the invention
  • FIG 2 shows the expansion tank of the treatment system according to Figure 1
  • FIG. 3 shows a further embodiment of the expansion tank of a treatment system according to FIG. 1.
  • FIG. 1 shows an overview of a section of the processing system according to the invention.
  • a cooling lubricant container 2 also called a machine tank, attached to the machine tool
  • the used cooling lubricant is conveyed by means of a pump 1 into an expansion tank 4 and flows out of this via an over-funnel 5 arranged in this expansion tank 4 into a separator 3.
  • the delivery of the used cooling lubricant into the expansion tank 4 begins at the suction bell 16 arranged in the cooling lubricant tank 2, which is coupled to a float 17.
  • the liquid is fed into the expansion tank 4 from the pump 1 provided with a flow control 14 via a differential pressure filter 18. Between the pump 1 and the expansion tank, a regulation 15 of the liquid level in the expansion tank 4 is also provided.
  • the control loops are indicated by dashed lines in FIG. 1.
  • the liquid is kept at a constant temperature by a heating / cooling coil 6, which is connected to a temperature control 7.
  • An emptying line 19 is connected to the deepest point of the inclined floor.
  • a foam damping grille 9, which can also be referred to as an injection grille, is attached above the liquid surface.
  • the used cooling lubricant is pumped from the cooling lubricant container 2 via a suction bell 16 provided with a float 17 and a differential pressure filter 18 into the compensating container 4 and flows from there via the overflow funnel 5 and the inlet line 21 because of the height difference 20 between the overflow edge of the overflow funnel 5 and the highest separator inlet point into the separator 3.
  • the used cooling lubricant is divided into the three phases mentioned above.
  • FIG. 2 shows a more detailed illustration of the expansion tank 4 from FIG. 1.
  • the used cooling lubricant is pumped via the centrifugal pump 1, a check valve 22 and the control armatures 23 through the delivery line 24 into a tubular end 13 lying inside the expansion tank 4 which has a plurality of holes 12 towards the inclined floor
  • the expansion tank 4 is covered with a tank lid 25, on the inner edge of which a sealing lip 26 is inserted.
  • the marking 27 can also be seen in FIG. 2, by means of which the overflow funnel can be set to a specific specific throughput to the separator, that is to say volume per time.
  • FIG. 3 shows an expansion tank with additional equipment.
  • a level monitor 28 and a heating / cooling coil 6 are fitted inside the expansion tank.
  • a dirt trap 29 designed as a grid is placed over the collar 10.
  • Temperature control 7 is also found in FIG. 3.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Lubricants (AREA)

Abstract

L'invention concerne un système de préparation de réfrigérants lubrifiants, particulièrement des émulsions réfrigérantes, comportant une pompe (1) véhiculant le réfrigérant hors du réservoir (2) d'une machine-outil vers un séparateur (3) du système de préparation, lequel est caractérisé par un réservoir de compensation (4) situé entre la pompe (1) et le séparateur (3) et possédant un trop-plein (5) par l'intermédiaire duquel le réfrigérant est conduit vers le séparateur (3) et dont la limite de trop-plein se situe au-dessus du point d'admission le plus élevé du séparateur.
EP19910903885 1990-02-22 1991-02-13 Systeme de preparation de refrigerants lubrifiants Withdrawn EP0515451A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19904005627 DE4005627A1 (de) 1990-02-22 1990-02-22 Aufbereitungssystem fuer kuehlschmierstoffe
DE4005627 1990-02-22

Publications (1)

Publication Number Publication Date
EP0515451A1 true EP0515451A1 (fr) 1992-12-02

Family

ID=6400759

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910903885 Withdrawn EP0515451A1 (fr) 1990-02-22 1991-02-13 Systeme de preparation de refrigerants lubrifiants

Country Status (3)

Country Link
EP (1) EP0515451A1 (fr)
DE (1) DE4005627A1 (fr)
WO (1) WO1991012926A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4221446A1 (de) * 1992-06-30 1994-01-05 Henkel Kgaa Verfahren zum Betreiben eines Zentrifugalseparators und Zusatzeinrichtung für einen solchen
DE4413934A1 (de) * 1994-04-21 1995-10-26 Kleenoil Deutschland Gmbh Filteranlage mit Ölabscheider
US6379538B1 (en) 1997-06-05 2002-04-30 Lucid Treatment Systems, Inc. Apparatus for separation and recovery of liquid and slurry abrasives used for polishing
US5928492A (en) * 1997-06-05 1999-07-27 Lucid Treatment Systems, Inc. Method and apparatus for recovery of water and slurry abrasives used for chemical and mechanical planarization
DE19755477A1 (de) * 1997-12-13 1999-06-17 Mann & Hummel Filter Einrichtung zur Überwachung einer Bearbeitungsflüssigkeit
DE29911482U1 (de) * 1999-07-01 1999-12-30 C & H Werkzeugmaschinen Gmbh Vorrichtung zum Pflegen und Reinigen eines Arbeitsmediums
US9475611B2 (en) 2007-04-19 2016-10-25 Anheuser-Busch Inbev S.A. Integrally blow-moulded bag-in-container having interface vents opening to the atmosphere at location adjacent to bag's mouth, preform for making it; and processes for producing the preform and bag-in-container
US20080258356A1 (en) 2007-04-19 2008-10-23 Inbev S.A. Integrally blow-moulded bag-in-container comprising an inner layer and an outer layer comprising energy absorbing additives, and preform for making it
US20080257883A1 (en) 2007-04-19 2008-10-23 Inbev S.A. Integrally blow-moulded bag-in-container having an inner layer and the outer layer made of the same material and preform for making it

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1008425A (en) * 1962-09-28 1965-10-27 Mixing & Separating Equipment Improvements in or relating to liquid supply apparatus for use in machining operations
DE2149168A1 (de) * 1971-10-01 1973-04-12 Vasiljevic Costa Silard Dr Dip Schalldaemmende wand, platte, schale oder dergl
SE411021B (sv) * 1977-10-10 1979-11-26 Alfa Laval Ab Sett och anordning for rening av skervetska
DE2813091C2 (de) * 1978-03-25 1980-02-07 Prontor-Werk Alfred Gauthier Gmbh, 7547 Wildbad Einrichtung zum Zuführen von Kühl- und/oder Polierflüssigkeit, insbesondere zur Verwendung an Maschinen zum Schleifen und/oder Polieren von optischen Linsen
FR2535223B1 (fr) * 1982-11-03 1985-07-05 Guinard Centrifugation Installation et procede de separation des constituants d'une suspension
DE3521510A1 (de) * 1985-06-14 1986-12-18 Hanns-Heinz 8000 München Peltz Vorrichtung zur umlauffoerderung fluessigen kuehlmittels
DE3616426A1 (de) * 1986-05-15 1987-11-19 Schloemann Siemag Ag Einrichtung zur aufbereitung von verunreinigungen, rueckstaenden und/oder alterungsprodukten aufweisenden fluessigkeiten

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9112926A1 *

Also Published As

Publication number Publication date
DE4005627A1 (de) 1991-08-29
WO1991012926A1 (fr) 1991-09-05

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