EP1257341A1 - Procede et dispositif pour epurer des liquides - Google Patents

Procede et dispositif pour epurer des liquides

Info

Publication number
EP1257341A1
EP1257341A1 EP01902231A EP01902231A EP1257341A1 EP 1257341 A1 EP1257341 A1 EP 1257341A1 EP 01902231 A EP01902231 A EP 01902231A EP 01902231 A EP01902231 A EP 01902231A EP 1257341 A1 EP1257341 A1 EP 1257341A1
Authority
EP
European Patent Office
Prior art keywords
coolant
liquid
tank
suction device
coolant tank
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Withdrawn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
EP01902231A
Other languages
German (de)
English (en)
Inventor
Josef Vogel
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.)
Vobhag Finishing Systems
Original Assignee
Vobhag Finishing Systems
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 Vobhag Finishing Systems filed Critical Vobhag Finishing Systems
Publication of EP1257341A1 publication Critical patent/EP1257341A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/10—Arrangements for cooling or lubricating tools or work
    • B23Q11/1069—Filtration systems specially adapted for cutting liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0009—Settling tanks making use of electricity or magnetism
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0012—Settling tanks making use of filters, e.g. by floating layers of particulate material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/245—Discharge mechanisms for the sediments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/30—Control equipment
    • B01D21/34—Controlling the feed distribution; Controlling the liquid level ; Control of process parameters
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
    • B01D21/262—Separation of sediment aided by centrifugal force or centripetal force by using a centrifuge
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/02—Non-contaminated water, e.g. for industrial water supply
    • C02F2103/023—Water in cooling circuits

Definitions

  • the present invention relates to a method for cleaning liquids according to the preamble of claim 1 and an apparatus for performing the method according to the preamble of claim 6.
  • Contaminants in liquids that are used in a closed circuit such as cooling liquids, must be able to be removed in the most effective manner without restricting the throughput rate of the liquid flow too much.
  • Coolants are used, for example, to cool the tools and workpieces of machine tools and absorb a large amount of contaminants at the cooling location, which must be removed from the liquid in the cooling circuit. These contaminants are, for example, material of the machined workpiece removed by the machine tool.
  • centrifugal separators are conventionally used, which precisely remove the solid contaminants from the liquid flow.
  • the disadvantage of this method is that it is only suitable for relatively small cooling quantities and is not suitable for large cooling quantities with a high cooling liquid throughput.
  • the method according to the invention is also particularly suitable for cleaning large liquid throughputs, for example up to 1000 liters / minute, and reliably removes all contaminants in the liquid.
  • Another major advantage is that the dirt accumulates as a puncture-resistant sludge concentrate, which is easy to handle on the one hand and easy to dispose of on the other.
  • volume flow is divided when flowing through the preliminary coarse filter and the relatively coarse, respectively.
  • Large dirt particles are separated here and fed to a fine filter device with a significantly smaller throughput, which can reliably remove these dirt particles.
  • the liquid stream which only contains fine contaminants, and which is fed from the pre-coarse filter to the liquid tank, can be separated there by sedimentation at the bottom of the tank.
  • This sediment is then drawn off from the bottom and also fed to the fine filter with a small volume flow, where these dirt particles are also reliably removed.
  • the one used for transportation and now cleaned Liquid can advantageously be returned to the liquid tank.
  • the method according to the invention is particularly suitable for the cleaning of cooling liquid, such as are used for cooling the machining tools in machine tools. A large part of the machined, removed material of the workpiece is swept away from the processing point by the cooling liquid and must be removed from the cooling liquid.
  • the method can also be used for other liquids used in a circuit, which are to be continuously freed of impurities.
  • the bottom region of the liquid tank with a conical central part that promotes the sedimentation of the residues in the coolant and allows it to accumulate at a defined location, namely preferably an annular bottom region of the coolant tank.
  • the sediment can be reliably suctioned off in a simple manner and fed to the further cleaning stage.
  • This arrangement is particularly advantageous for compact systems of smaller format, as can be used for example for individual machine tools.
  • such a cleaning system is capable of reliably cleaning even relatively high liquid throughputs, for example up to 1000 liters / minute.
  • FIG. 2 schematically shows the longitudinal section through a cleaning device according to the invention.
  • FIG. 1 schematically shows the process diagram of the process according to the invention.
  • coolant 2 is supplied to the cooling location 4 in a supply line 3.
  • This can be, for example, the processing location of a machine tool, where the coolant cools the tool on the one hand and the material removed from the workpiece on the other. the processing residues removed from processing location 4.
  • These processing backlogs can be small solids made from a wide variety of materials or chemical residues.
  • the coolant 2 contaminated in this way is then collected, for example, in a collecting funnel 5 and fed to a coarse filter 7 via a discharge line 6.
  • the coarse impurities are separated from the coolant 2 in a first step.
  • This can be done, for example, by means of a screening plant with passage openings equipped according to the expected size of the contaminants.
  • a magnetic separator is preferably used when metal processing tools are used. The latter is particularly suitable when metallic contaminations are to be expected, as occurs when machining or abrasive machining of metallic workpieces.
  • the coolant 2 flowing through this coarse filter 7 is then passed into a liquid tank 8.
  • the impurities retained by the separator and / or filter of the pre-coarse filter 7 are removed via a flushing channel 9 with a small amount of coolant and fed to a fine filter system 10.
  • the connecting line 11 between the pre-coarse filter 7 and the liquid tank 8 preferably opens into the upper region of the liquid tank 8.
  • This liquid tank 8 is dimensioned so large that sedimentation of the contamination still in the cooling liquid 2 can take place on the bottom of the liquid tank 8.
  • These sediments are continuously sucked off from the bottom of the liquid tank 8 by means of a suction device 12 and also fed to the fine filter system 10, for example via the flushing channel 9.
  • the suction pump 12 ' is used for this.
  • FIG. 2 shows the liquid tank 8 as the central component of a cleaning device according to the invention.
  • the liquid tank 8 preferably has a conically tapering shape and preferably consists of a chromium-nickel steel.
  • a tapered cone 18 is preferably inserted, which together with the side walls delimits an annular bottom of the liquid tank 8.
  • the contamination still present in the coolant 2 is deposited as sediment on this annular base 8 ', which preferably has a circular shape. This is then sucked off by the suction device 12, the suction opening 12 ′′ of which is preferably driven to rotate about the vertical axis of the liquid tank 8, and fed via line 19 to the fine filter 10 arranged next to the liquid tank 8.
  • the coarse filter 7 is arranged above the liquid tank 8, in which the discharge line 6 opens with the contaminated coolant 2.
  • the pre-coarse filter 7 is preferably designed as a magnetic separator with a sieve, the separated or. Parts caught in the sieve can also be fed to the fine filter 10 via the line 9.
  • Such a system has, for example, a liquid tank volume of 1500 liters and a coolant capacity of up to 250 liters / minute.
  • the suction device 12 pumps out the sediment area with a maximum of 60 liters / minutes, which leads to a correspondingly reduced volume flow in the fine filter area 10.
  • the system can of course still with automatically or manually controlled valves resp. Gate valve should be provided to adjust the volume flow.
  • Intermediate basins 15 are used, which control the valves or gate valves mentioned or supply the circuit with fresh coolant 2, so that none of the pumps can run dry and can therefore be damaged.
  • the liquid tank 8 can also be designed in a rectangular shape, as is shown schematically in FIG.
  • the suction device 12 can then be arranged displaceably on rails 19 above the liquid tank 8 and thus likewise suck off the sediment residues over the entire bottom of the liquid tank 8.
  • the suction opening 12 ′′ can either also be moved in a circle, as already shown in FIG. 2. Then the two bottom areas on the end walls of the liquid tank 8 must also be semicircular. Alternatively, of course, the suction opening 12 ′′ in turn can be moved back and forth on a slide across the rails 19 in order to be able to suction the entire bottom region of the liquid tank 8. The movement of the suction opening 12 ′′ is advantageously controlled automatically.
  • Such an arrangement makes it easy, for example, to implement systems with a liquid tank size of over 5000 liters, which can provide a cooling water flow of up to 400 liters / minute.

Landscapes

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

Abstract

La présente invention concerne un procédé d'épuration de liquides (2) qui sont utilisés en un circuit presque fermé, procédé selon lequel les particules de grande taille se déposent, à partir du liquide, selon un premier processus de filtration grossière (7), et les fines particules contenues dans le liquide sont enlevées selon un processus de sédimentation consécutif, qui se déroule dans un réservoir à liquide (8). Aussi bien les petites particules, sous forme de sédiments, que les particules de grande taille sont ensuite conduites à un dispositif de filtration fine (10), dans un circuit séparé, dispositif de filtration fine où ces particules sont complètement retirées du liquide (2) et, de façon avantageuse, forment un concentré de boue consistant qui est facile à manipuler et à éliminer. Ce procédé d'épuration convient en particulier à l'épuration d'eau de refroidissement utilisée pour le refroidissement des outils de machines-outils.
EP01902231A 2000-02-16 2001-02-12 Procede et dispositif pour epurer des liquides Withdrawn EP1257341A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH2992000 2000-02-16
CH2992000 2000-02-16
PCT/CH2001/000091 WO2001060493A1 (fr) 2000-02-16 2001-02-12 Procede et dispositif pour epurer des liquides

Publications (1)

Publication Number Publication Date
EP1257341A1 true EP1257341A1 (fr) 2002-11-20

Family

ID=4490238

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01902231A Withdrawn EP1257341A1 (fr) 2000-02-16 2001-02-12 Procede et dispositif pour epurer des liquides

Country Status (3)

Country Link
EP (1) EP1257341A1 (fr)
AU (1) AU2001229947A1 (fr)
WO (1) WO2001060493A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1459839A1 (fr) * 2003-03-19 2004-09-22 Cem di Cimini Nicola Installation pour le traitement de copeaux et la récupération de l'huile
FR2979275B1 (fr) * 2011-08-24 2014-05-23 Philippe Bruno Rouzee Appareillage accessoire pour meuleuse, notamment pour meuleuse s'utilisant pour la taille des verres optiques
CN103394967B (zh) * 2013-07-17 2016-12-28 浙江科瑞特环境科技有限公司 一种切削液回收再生机
CN104275626A (zh) * 2014-09-24 2015-01-14 浙江长兴天辰磁业有限公司 汝铁硼切削机床用冷却液回收装置
CN104595469A (zh) * 2014-11-25 2015-05-06 合肥合锻机床股份有限公司 一种可使润滑油循环使用的油箱
CN105397562B (zh) * 2015-12-10 2018-03-27 宁波海天精工股份有限公司 一种应用于深孔加工的数控机床高压主轴内冷系统
CN105415087A (zh) * 2016-01-11 2016-03-23 苏州帝瀚环保科技股份有限公司 机床液箱净化系统
DE102020002499A1 (de) * 2020-04-26 2021-10-28 Smart Material Printing B.V. Vorrichtung und Verfahren zur Reinigung und Wiedergewinnung gebrauchter Schmierstoffe und/oder Kühlschmierstoffe
CN114505727A (zh) * 2022-01-11 2022-05-17 范婷婷 一种金属加工机台的冷却循环系统及其冷却方法
CN114392607B (zh) * 2022-01-14 2023-02-10 中国科学院上海光学精密机械研究所 光学镜片抛光液循环过滤装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3455457A (en) * 1965-11-22 1969-07-15 Frank J Popelar Liquid filtering system for machine coolant
DE2220132C3 (de) * 1972-04-25 1975-10-09 Man Waerme- Und Lufttechnik Gmbh, 3300 Braunschweig Verfahren und Vorrichtung zum Abtrennen von Sinter aus einer Flüssigkeit
DE2731538A1 (de) * 1977-07-09 1979-01-25 Spandau Maschf Geco Pumpentech Kuehlmittelfilteranlage
GB2084479A (en) * 1980-09-23 1982-04-15 Ford Motor Co Separating solids from liquids
US4872975A (en) * 1989-01-31 1989-10-10 Ingersoll-Rand Company System for separating abrasive material from a fluid used in fluid jet cutting
JPH07246542A (ja) * 1994-03-08 1995-09-26 Mazda Motor Corp 浄化装置
US5529695A (en) * 1994-07-21 1996-06-25 The United States Of America As Represented By The Secretary Of The Army Apparatus and method for removing swarf and fines from cutting fluids

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0160493A1 *

Also Published As

Publication number Publication date
AU2001229947A1 (en) 2001-08-27
WO2001060493A1 (fr) 2001-08-23

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