EP0247046A1 - Desinfection d'emulsions de lubrifiants de refroidissement miscibles dans l'eau par irradiation aux rayons gamma durs - Google Patents

Desinfection d'emulsions de lubrifiants de refroidissement miscibles dans l'eau par irradiation aux rayons gamma durs

Info

Publication number
EP0247046A1
EP0247046A1 EP86901052A EP86901052A EP0247046A1 EP 0247046 A1 EP0247046 A1 EP 0247046A1 EP 86901052 A EP86901052 A EP 86901052A EP 86901052 A EP86901052 A EP 86901052A EP 0247046 A1 EP0247046 A1 EP 0247046A1
Authority
EP
European Patent Office
Prior art keywords
radiator
line
day
chamber
emulsion
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.)
Pending
Application number
EP86901052A
Other languages
German (de)
English (en)
Inventor
Bernd Ernst
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.)
Herion Systemtechnik GmbH
Original Assignee
ZF Herion Systemtechnik 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 ZF Herion Systemtechnik GmbH filed Critical ZF Herion Systemtechnik GmbH
Publication of EP0247046A1 publication Critical patent/EP0247046A1/fr
Pending legal-status Critical Current

Links

Classifications

    • 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
    • C10M177/00—Special methods of preparation of lubricating compositions; Chemical modification by after-treatment of components or of the whole of a lubricating composition, not covered by other classes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/08—Radiation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/30—Treatment of water, waste water, or sewage by irradiation

Definitions

  • the invention relates to a device for irradiating water-miscible lubricant emulsions, in particular cooling lubricant emulsions for metal-cutting machine tools, with a hard gamma-ray emitter shielded by a lead jacket, which is installed in a line section belonging to the cooling circuit.
  • Such cooling lubricant emulsions are required in large quantities in the industrial process. They are therefore guided in a circuit to the machine tools and then returned to a storage container with subsequent processing and kept ready.
  • Biocides are therefore often added to the cooling lubricants, which reduce the biocompatibility of the emulsions and can lead to symptoms of the disease, primarily on the skin of the employees working there.
  • the invention has for its object to keep the effort as low as possible by the proper dimensioning of the device and design, without neglecting existing regulations for radiation protection. According to the invention, this object is achieved by the features of the first claim. From the so-called biodynamic dose rate, the value of which has been determined from tests, a suitable radiator power can be determined for each facility size and capacity, which on the one hand fulfills the requirement for limitation of the bacterial population and freedom from fungi and on the other hand the radiator power is so low that with simple means adequate shielding and simple maintenance is possible.
  • the line piece in the region of the radiator is expediently U-shaped and the radiator is used approximately in the middle of the U-shaped winding.
  • the radiation element eg Co 60
  • the radiation element is expediently surrounded by a hermetically sealed radiator capsule made of stainless steel, which in turn is placed in a stainless steel chamber of the line piece, which is open to the outside, is absolutely tight against the lubricant emulsion in the pipe section.
  • the radiating element is thus protected twice. If the chamber leaks due to corrosion or otherwise, the capsule prevents contact between the cooling medium and the radiating element.
  • a moisture indicator in the chamber allows the damage to be noticed in good time and can be remedied after the lamp capsule has been removed.
  • the opening of the chamber in the area of the lead jacket is sealed with a lead plug after inserting the lamp capsule.
  • the lead jacket In order to be able to operate a device with emitters of different emitter power, it is proposed to provide the lead jacket with a minimum thickness of 40 cm in all directions from the center of the tube, although smaller thicknesses may be sufficient with less radiation activity.
  • the greatest distance between the center of the radiator and the inner surface of the cable is decisive for the activity of the radiator, namely in the cable cross-section through the center of the radiator.
  • this is expediently arranged on the edge of the line, so that the maximum distance corresponds approximately to the diameter of the line.
  • the maximum distance to the radius of the line can be reduced if, according to a further proposal, the lamp is arranged approximately in the middle of the line.
  • Special circumstances may require it; that several radiators with a correspondingly reduced radiator power are arranged in a star shape on the circumference of the line.
  • FIG. 1 1) shows a longitudinal section through an inventive device. It is a U-shaped tube (a) with a diameter of 125 mm, but can be enlarged or reduced as desired, which is encapsulated with lead (e) in a sheet metal trough (f) in such a way that a lead thickness of 400 mm, but can be changed if necessary.
  • An opening (j) of minimum 25 mm is cut in the middle of the upper horizontal tube and a stainless steel bushing (b) of 25 mm x 30 mm is watertightly fitted into the interior of the tube.
  • the radiator (c) is placed in this socket.
  • the opening is sealed with a suitable lead plug (b).
  • a valve (h) is attached to the lower tube wall, through which the emulsion can be drained.
  • a channel is drilled through the lead jacket up to the socket, through which a moisture indicator (g) can be inserted appropriately.
  • FIG. 2 shows a cross section of the system according to the invention, the designation being the same as Fig. 1.
  • FIG. 3 shows an alternative solution, as the radiator (c) by extending the socket (b) to e.g. 62.5 mm can be attached in the middle of the pipe.
  • Figure 4 shows, with the same designation, how several radiators are attached in a star shape around the tube can be.
  • the system is flanged into the circulation system of a central cooling lubricant system, the tube is filled with emulsion and the heater is inserted. From this point in time, the system can be set up at any location without maintenance until the half-life has expired, if a closure (k) is attached above the lead plug (d).

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Toxicology (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Lubricants (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

Un agencement comprenant une source de rayons gamma est utilisé pour maintenir au-dessous d'un certain seuil la population de bactéries dans une émulsion d'un lubrifiant de refroidissement de machines-outils d'usinage, ainsi que pour empêcher la formation de champignons. Le débit de la source de rayons gamma est déterminé en fonction d'un débit biodynamique de dosage déterminé de façon expérimentale et pouvant être précisé par rapport aux autres paramètres de l'agencement. L'agencement comprend essentiellement une conduite en U faisant partie du circuit du lubrifiant. Une chambre d'irradiation est formée dans la partie moyenne de la conduite. La capsule d'irradiation hermétiquement fermée est placée dans cette chambre, la source de rayonnement et la conduite étant protégées par un blindage en plomb.
EP86901052A 1985-01-25 1986-01-22 Desinfection d'emulsions de lubrifiants de refroidissement miscibles dans l'eau par irradiation aux rayons gamma durs Pending EP0247046A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP8500022 1985-01-25
WOPCT/EP85/00022 1985-01-25

Publications (1)

Publication Number Publication Date
EP0247046A1 true EP0247046A1 (fr) 1987-12-02

Family

ID=8165001

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86901052A Pending EP0247046A1 (fr) 1985-01-25 1986-01-22 Desinfection d'emulsions de lubrifiants de refroidissement miscibles dans l'eau par irradiation aux rayons gamma durs

Country Status (5)

Country Link
EP (1) EP0247046A1 (fr)
JP (1) JPS62501715A (fr)
KR (1) KR870700090A (fr)
DE (1) DE3601724A1 (fr)
WO (1) WO1986004348A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4125776A1 (de) * 1991-08-03 1993-02-04 Lucie Dauer Verfahren zur konservierung menschlicher knochenmasse
DE19543503C2 (de) * 1995-11-22 2000-01-05 Nukem Gmbh Verfahren und Vorrichtung zum Bestrahlen von Flüssigkeiten mit energiereicher Strahlung sowie Verwendung der Vorrichtung
DE102011112994A1 (de) * 2011-09-08 2013-03-14 Schott Ag Vorrichtung zur Entkeimung von Gasen und/oder Flüssigkeiten

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH529696A (de) * 1970-10-07 1972-10-31 Sulzer Ag Verfahren zum Behandeln von Wasser, vorzugsweise Abwasser oder Schlamm, und Anlage zum Durchführen des Verfahrens

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8604348A1 *

Also Published As

Publication number Publication date
WO1986004348A1 (fr) 1986-07-31
DE3601724A1 (de) 1986-09-18
KR870700090A (ko) 1987-02-28
JPS62501715A (ja) 1987-07-09

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