WO2001002077A2 - Device for maintaining and cleaning a working medium - Google Patents

Device for maintaining and cleaning a working medium Download PDF

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Publication number
WO2001002077A2
WO2001002077A2 PCT/EP2000/006182 EP0006182W WO0102077A2 WO 2001002077 A2 WO2001002077 A2 WO 2001002077A2 EP 0006182 W EP0006182 W EP 0006182W WO 0102077 A2 WO0102077 A2 WO 0102077A2
Authority
WO
WIPO (PCT)
Prior art keywords
filter
working medium
container
working
cushion
Prior art date
Application number
PCT/EP2000/006182
Other languages
German (de)
French (fr)
Other versions
WO2001002077A3 (en
Inventor
Zbigniew Combrowski
Armin Hamma
Original Assignee
C & H Werkzeugmaschinen 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
Priority claimed from DE29911482U external-priority patent/DE29911482U1/en
Application filed by C & H Werkzeugmaschinen Gmbh filed Critical C & H Werkzeugmaschinen Gmbh
Priority to KR1020017016568A priority Critical patent/KR20020019471A/en
Priority to EP00951327A priority patent/EP1200171A2/en
Priority to JP2001507562A priority patent/JP2003503188A/en
Publication of WO2001002077A2 publication Critical patent/WO2001002077A2/en
Publication of WO2001002077A3 publication Critical patent/WO2001002077A3/en

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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
    • C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
    • C10M175/0058—Working-up used lubricants to recover useful products ; Cleaning by filtration and centrifugation processes; apparatus therefor
    • 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
    • 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
    • B01D17/0208—Separation of non-miscible liquids by sedimentation
    • B01D17/0214—Separation of non-miscible liquids by sedimentation with removal of one of the phases
    • 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
    • B01D17/08—Thickening liquid suspensions by filtration
    • B01D17/10—Thickening liquid suspensions by filtration with stationary filtering elements
    • 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
    • B01D21/307—Passive control mechanisms without external energy, e.g. using a float
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/39—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with hollow discs side by side on, or around, one or more tubes, e.g. of the leaf type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/39—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with hollow discs side by side on, or around, one or more tubes, e.g. of the leaf type
    • B01D29/41—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with hollow discs side by side on, or around, one or more tubes, e.g. of the leaf type mounted transversely on the tube
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/60—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration
    • B01D29/605—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration by level measuring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
    • B01D29/661—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps by using gas-bumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
    • B01D29/668—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with valves, e.g. rotating valves for coaxially placed filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
    • B01D29/94—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for discharging the filter cake, e.g. chutes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • B08B3/14—Removing waste, e.g. labels, from cleaning liquid; Regenerating cleaning 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
    • B01D21/0006—Settling tanks provided with means for cleaning and maintenance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/04—Supports for the filtering elements
    • B01D2201/0407—Perforated supports on both sides of the filtering element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/20—Pressure-related systems for filters
    • B01D2201/204—Systems for applying vacuum to filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/20—Pressure-related systems for filters
    • B01D2201/204—Systems for applying vacuum to filters
    • B01D2201/208—Systems for applying vacuum to filters by venturi systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/26—Transport systems for filtering devices
    • B01D2201/265—Transport systems for filtering devices mounted on vehicles
    • 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
    • C02F2103/44—Nature of the water, waste water, sewage or sludge to be treated from vehicle washing facilities

Definitions

  • the present invention relates to a device for maintaining and cleaning a working medium, in particular cooling lubricants, oils, slide grinding water, vehicle washing water and washing baths, which can be fed to at least one filter via at least one line, in particular a hose.
  • a working medium in particular cooling lubricants, oils, slide grinding water, vehicle washing water and washing baths
  • the present invention has for its object to significantly improve the previously known cleaning by means of a filter through which the working medium flows.
  • the filter or a filter cushion is assigned a vacuum and / or pressure-generating device and the filter can be flowed from several sides, the working medium entering the filter cushion and from the inside of the filter cushion to one Crossing.
  • the working medium to be cleaned can be passed through the filter, from and to, for example, a working machine in a simple manner.
  • a vacuum generating device is used, to arrange it in the flow direction of the working medium after the filter.
  • a pressure generating device is upstream of the filter. A coupling of both operating modes also seems conceivable.
  • An essential feature of the present invention is that the filter is flown from several sides. This means that the working medium to be cleaned not only flows through the filter in a certain direction, but also through the working medium to be cleaned the filter walls get inside the filter and are led away from there. As a result, most of the surface of the filter is available for filtering, so that the actual filter area is considerably enlarged. For this reason, the entire device can also be kept smaller.
  • Another advantage of this operating mode according to the invention is that the actual device can be used stationary for a plurality of, for example, processing machines as sources of the working medium to be cleaned.
  • a central tank is provided as a floor tank, which is under vacuum. Due to the vacuum, the working fluid to be cleaned is sucked out of a corresponding storage container on the working machine. The working fluid to be cleaned is again sucked out of the central tank to the device according to the invention by vacuum.
  • the device is then connected via a feed line to a central supply line via which cleaned working fluid is fed back to the individual processing machines.
  • Metal mesh in particular a stainless steel mesh, stainless steel fleece or the like. having.
  • the filter is produced from individual filter cushions connected to one another. Several filter pads form a filter package. Each filter cushion should be built up in layers. The idea is to arrange the filter layer with the metal mesh between an outer and an inner filter wall. If necessary, a support fabric can also be provided between the individual filter layers.
  • the filters are rectangular in a normal filter housing.
  • a feature of the present invention is also directed to the fact that round filters are used. These also consist of a support frame with spacers on the inside, which separate an outer and an inner filter wall. Both filter walls can be flowed through by the working medium to be cleaned.
  • such round filters are rotatably arranged. Only a part of the filter is immersed in the working medium to be cleaned, so that this immersing part is only penetrated by the working medium. It turned out that when the
  • a second feature of the present invention which is also to be used in known filters but in particular in the present filters with stainless steel mesh or stainless steel fleece, is that the filter is assigned a backwashing device.
  • the backwashing device should knock off the filter cake on the filter.
  • the backwash is carried out abruptly, ie a backwash medium is placed under considerable air pressure and introduced into the filter.
  • the shape of the filter is of minor importance. This can be filter packs, pillow filters or the like. act.
  • the sludge accumulating in the filter housing is preferably emptied mechanically or automatically by opening a flap or a slide.
  • the working medium passes from the filter housing through a passage into a working container.
  • a pressure relief / flotation as described in DE 197 18 217 AI, can preferably be assigned here to a second filter cut.
  • the working medium is enriched with atmospheric oxygen, whereby anaerobic
  • Bacteria die and the working medium can neither germinate nor stink.
  • the working medium drawn in can be compressed and then expanded into the working space. Due to the relaxation after compression, the foreign oil demulsifies and the entrained air is broken up into very small air bubbles. This leads to the well-known flotation, whereby the air bubbles attach to the foreign oil and dirt floating in the cooling lubricants and take them to the surface of the working medium.
  • the emulsion to be cleaned is rinsed in countercurrent with its own liquid, which is, however, enriched with very fine air bubbles. - D -
  • This surface suction system preferably pumps the dirt particles into its own dirt container, where the dirt particles can be removed.
  • a third filtration of the working medium This is done through a fine filter wall, which divides a clean zone in the work containers and in the dirt container. Since the working medium is only removed and returned from this clean zone below the fine filtering wall, this working medium is sucked in under this fine filtering wall.
  • the bottom of the working container and dirt container should preferably be chamfered so that any contamination that may still be present can settle and can be drained off through a drain valve.
  • the present device has the essential advantage that the working medium is cleaned physically without a filter having to be disposed of. Cleaning takes place in up to three steps. In the first filter stage, sludge and chips are removed down to a filter fineness of less than 1 ⁇ m depending on the application. In the second cleaning stage, in the working containers, oil and bacteria are removed in an integrated one
  • the working medium is automatically aerated and circulated.
  • the fine filter wall light oil is removed. Overall, it is a compact system for cleaning and maintaining working media that can work fully automatically.
  • Figure 1 is a schematically shown, partially opened device for maintaining and cleaning a working medium
  • Figure 2 shows another embodiment of a device for maintaining and cleaning a working medium in the use position near a processing machine
  • FIG. 3 shows a rear view of the opened device according to the invention according to FIG. 1;
  • FIG. 4 shows a longitudinal section through a filter pack according to the invention
  • FIG. 5 shows an enlarged illustration of the longitudinal section according to FIG. 4;
  • Figure 6 is a schematic representation of a system with an integrated device for maintaining and cleaning a working medium
  • FIG. 7 shows a perspective view of a support frame for an exemplary embodiment of a filter cushion according to the invention.
  • FIG. 8 shows a schematic illustration of a filter housing for a filter cushion according to FIG. 7.
  • a processing machine 1 is schematically indicated in FIG Cooling lubricant is assigned.
  • the working medium 3 is removed from a receptacle 32 by means of a return pump 23 from the container 2 and fed to the processing machine 1 via a return line 33. Used processing medium returns from the processing machine 1 via a line 34 into the container 2.
  • the container 2 is equipped with a sloping floor 35, so that both the working medium 3 and the soiling that is deposited can reach a lower corner of the container 2. From there, heavily soiled working medium is removed and discharged via a suction pump 36.
  • Working medium 3 to be cleaned is removed from the container 2 by a suction nozzle 5 and transferred into a filter housing 7, in which a filter 13 is located. It flows through the filter 13 and passes through a transition 12 into a vacuum column 37 on which a vacuum pump 10 is seated.
  • a filter 38 is provided in the vacuum column 37 in front of the vacuum pump 10. The filtrate itself passes directly from the vacuum column 37 into the container 2, in which partitions 39.1 to 39.2, indicated by dashed lines, can be provided.
  • the processing machine 1 to which the container 2 for the working medium 3 is assigned is again schematically indicated in FIG.
  • an operator 4 hangs the suction nozzle 5 into the working medium 3, which is fed to the filter housing 7 by means of a vacuum or pressure pump via a hose 6.
  • a swivel arm 8 On the filter housing 7 there is also a swivel arm 8 with a hose holder 9.
  • the vacuum pump 10 is provided in a device 9 according to the invention for cleaning and maintaining this working medium 3, which draws in air from a working space 11, the working space 11 via the transition 12 with the Filter housing 7 is connected.
  • An air filter is identified by 30.
  • One of the filter packs 40 is shown in FIGS. 4 and 5. It has a filter pad 41 and a connecting piece 42 to the next filter pack or to the transition 12.
  • the filter pad 41 is constructed with multiple walls, as can be seen in FIG. 5.
  • the outermost layer is formed by an outer filter wall 43 which has passages 44 for the working medium.
  • the actual filter layer 44 which consists of a metal fleece, preferably a stainless steel mesh, follows the outer filter wall 43. This is followed by a support fabric layer 45, which is more stable and coarser than the filter layer 44.
  • An inner filter wall 46 with the corresponding passages follows inwards.
  • the two opposing wall structures are kept at a distance by spacers 47.
  • the backwashing device 14, with which the filter 13 can be backwashed, is assigned to the filter housing 7. This is preferably done suddenly, for which purpose the backwashing device has an air tank which is under a pressure of about 1-6 bar. With the help of this backwashing device 14, a cake that deposits on the filter 13 is abruptly knocked off.
  • the cake or sludge can be discharged from the filter housing 7 through an open flap 15. In the present exemplary embodiment, it falls into a transport cart 16.
  • pressure relief takes place in the work space 11, as described, for example, in DE 197 18 217 A1. Therefore, a more detailed description should be omitted here.
  • the work space 11 is divided into different containers.
  • two working containers 17.1 and 17.2 can be seen, to which a dirt container 18 is also assigned. All three containers 17.1, 17.2 and 18 are still divided by a fine filter wall 19.
  • a floating oil 20 or the like. is removed from an oil extraction system by a float 21.
  • This float 21 is preferably designed as it is also described in DE 197 18 217 AI.
  • the float 21 is connected to a pump 22, by means of which, for example, the sucked, contaminated working medium is returned to the pump Filter housing 7 or can be passed into the dirt container 18.
  • a return pump 23 removes cleaned and maintained working medium from the working containers 17.1 and 17.2 from below the fine filtering wall 19 and leads this working medium back to the container 2 via a line 24.
  • a corresponding extraction pipe or the like, which is in the area below the fine filtering wall 19 protrudes is not shown.
  • a drain valve 25 is assigned to the dirt container 18, via which contaminated working medium can be directed into an additional container 26.
  • a bottom 27 of the work container and the dirt container is beveled.
  • a drain valve 28 is provided, through which a sludge cake can be discharged.
  • the entire fill level in the working containers 17.1, 17.2 and in the dirt container 18 is monitored by appropriate level monitors 29.1 to 29.3.
  • Working medium 3 is removed from the container 2 via the suction nozzle 5 by the vacuum pump 10 placing the working space 11 under vacuum. As a result, working medium 3 is sucked through the hose 6 into the filter housing 7, flows through the filter 13 there and reaches the transition 12 and thus the working space 11.
  • each filter cushion 41 of the filter 13 becomes. Except for the connection areas of the individual filter pads 41, the entire surface of each filter pad 41 acts as a filter. This provides the largest possible filter area.
  • the working medium 3 passes through the filter wall into the interior of the filter and via the individual connecting pieces 42 to the transition 12.
  • the filter cushions 13 can have any shape, which in particular also depends on the shape of the filter housing 7. If the filter housing 7 is rectangular, the filter cushions are normally also rectangular. If the filter housing is round, a wheel-shaped shape of the filter cushion is selected, in which case the connecting piece 42 virtually forms the hub.
  • a second filtration stage takes place in the work space 11.
  • Floating oil etc. is automatically sucked off via the float 21 as part of an integrated surface suction system and discharged into the dirt container 18.
  • Pressure relief flotation processes also enrich the working medium with the finest air bubbles. This prevents bacteria and fungi from forming and there is no odor nuisance.
  • FIG. 6 shows a stationary device 9 for maintaining and cleaning a working medium.
  • This device 9 is connected to a floor tank 48 via a line or a hose 6.
  • Working medium is drawn in from this floor tank 48 via the suction line 6 by the device and via branch lines 49 and 50 by the respective processing machines 1.1 and 1.2.
  • the working medium cleaned in the device 9 passes via the line 24 into a central line 51, via which the individual processing machines 1.1 and 1.2 are in turn supplied with cleaned working medium.
  • FIG. 7 shows a support frame 52 for a further exemplary embodiment of a filter cushion 41.1.
  • the filter cushion 41.1 (see FIG. 8) is round, as is the supporting frame 52.
  • the support frame 52 consists of an outer frame 53 and a center ring 54. Between the outer frame 53 and the center ring 54 extend radial webs 55, which are still connected to one another via concentric rings 56. Spacers 47.1 protrude from some of the radial webs 55.
  • a filter cloth is applied to the radial webs 55 and the concentric rings 56, the structure of which can correspond to that according to FIG. 5.
  • a further filter structure is applied to the spacers 47.1, whereby this wall structure can also correspond to that according to FIG. 5.
  • Such a filter cushion 41.1 is inserted into a filter housing 7.1 according to FIG. 8 and is preferably rotatably mounted there. It is of course conceivable that several such round filter cushions 41.1 are arranged one behind the other, as is shown for the filter 13 according to FIG. 1. In this case, a connecting piece similar to the connecting piece 42 is inserted in the center ring 54. This connecting piece 42 then also serves as a hub. The working medium 3 is sucked into the filter cushion 41.1 by this
  • the working medium to be cleaned is, as indicated by the arrow 57, entered into the filter housing 7.1 below the filter pad 41.1.
  • the filter pad 41.1 rotates in the working medium 3, so that the working medium 3 can penetrate into the interior of the filter pad 41.1. This is supported by pressure or vacuum.
  • the dirt settling on the filter pad 41.1 is due to the rotation of the filter pad 41.1 above the Working medium 3 is thrown off and thus passes into a collecting trough 58 which is designed as part of the filter housing 7.1. This extends a period of time until a backwash is necessary.

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  • 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)
  • Filtration Of Liquid (AREA)
  • Filtering Materials (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)

Abstract

The invention relates to a device for maintaining and cleaning a working medium (3), especially coolants, oils, grinding water, vehicle washing water and washing baths, which can be delivered to at least one filter by at least one line, especially a flexible tube (6). According to the invention, a vacuum and/or pressure-generating device is allocated to the filter (13) or to a filter pad (41, 41.1) and the filter can be approached from several sides. The working medium (3) enters the filter pad and passes from the inside of said filter pad (41, 41.1) to a transfer section (12).

Description

Vorrichtung zum Pflegen und Reinigen eines Arbeitsmediums Device for maintaining and cleaning a working medium
Die vorliegende Erfindung betrifft eine Vorrichtung zum Pflegen und Reinigen eines Arbeitsmediums, insbesondere von Kühlschmiermitteln, Ölen, Gleitschleifwässer, KFZ- Waschwässer und Waschbädern, welches über zumindest eine Leitung, insbesondere einen Schlauch, zumindest einem Filter zuführbar ist.The present invention relates to a device for maintaining and cleaning a working medium, in particular cooling lubricants, oils, slide grinding water, vehicle washing water and washing baths, which can be fed to at least one filter via at least one line, in particular a hose.
Arbeitsmedien, gleich welcher Art, werden heute in vielen Bereichen der industriellen Technik verwendet. Diese Arbeitsmittel müssen kontinuierlich oder diskontinuierlich gereinigt werden, da sie bei ihrer Benutzung erheblichen Verunreinigungen unterliegen. Beispielsweise Kühlschmierstoffe sind durch eingebrachte Fremdöle, Metallabrieb, Späne, Schmutz und Bakterien schnellen Alterungsprozessen ausgesetzt. Sie verkeimen, beginnen zu stinken und werden mit Blick auf die Fertigungsqualität und die Arbeitshygiene zu einem Problem.Working media of any kind are used in many areas of industrial technology today. These tools must be cleaned continuously or discontinuously, since they are subject to considerable contamination when they are used. For example, cooling lubricants are exposed to rapid aging processes due to foreign oils, metal abrasion, chips, dirt and bacteria. They germinate, start to stink and become a problem in terms of manufacturing quality and occupational hygiene.
Weitere Probleme dieser Arbeitsmedien sind insbesondere in der DE 197 18 217 AI beschrieben. Dort wird das Medium durch eine Luft-Flotation in der Reinigungseinrichtung gereinigt .Further problems of this working media are described in particular in DE 197 18 217 AI. There the medium is cleaned by air flotation in the cleaning device.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, die bisher bekannte Reinigung mittels eines Filters, welcher von dem Arbeitsmedium durchströmt wird, wesentlich zu verbessern .The present invention has for its object to significantly improve the previously known cleaning by means of a filter through which the working medium flows.
Zur Lösung dieser Aufgabe führt zum einen, dass dem Filter bzw. einem Filterkissen eine vakuum- und/oder druckerzeugende Einrichtung zugeordnet ist und der Filter von mehreren Seiten her anströmbar ist, wobei das Arbeitsmedium in das Filterkissen eintritt und aus dem Inneren des Filterkissens zu einem Übertritt gelangt.To solve this problem, on the one hand, the filter or a filter cushion is assigned a vacuum and / or pressure-generating device and the filter can be flowed from several sides, the working medium entering the filter cushion and from the inside of the filter cushion to one Crossing.
Mittels des Vakuums bzw. des Druckes kann das zu reinigende Arbeitsmedium auf einfache Art und Weise durch den Filter, von und zu beispielsweise einer Arbeitsmaschine geführt werden. Zu diesem Zweck wird es sich als ratsam erweisen, wenn eine vakuumerzeugende Einrichtung verwendet wird, diese in Strömungsrichtung des Arbeitsmediums dem Filter nachzuordnen. Eine druckerzeugende Einrichtung wird dagegen dem Filter vorgeschaltet. Eine Koppelung beider Betriebsarten erscheint auch denkbar.By means of the vacuum or the pressure, the working medium to be cleaned can be passed through the filter, from and to, for example, a working machine in a simple manner. For this purpose, it will prove advisable, if a vacuum generating device is used, to arrange it in the flow direction of the working medium after the filter. A pressure generating device, however, is upstream of the filter. A coupling of both operating modes also seems conceivable.
Wesentliches Merkmal der vorliegenden Erfindung ist, dass der Filter von mehreren Seiten her angeströmt wird. Das bedeutet, dass der Filter nicht nur in einer bestimmten Richtung von dem zu reinigenden Arbeitsmedium durchströmt wird, sondern dass das zu reinigende Arbeitsmedium durch die Filterwände in das Innere des Filters gelangt und von dort weggeführt wird. Hierdurch steht der grösste Teil der Oberfläche des Filters zum Filtern zur Verfügung, so dass die eigentliche Filterfläche erheblich vergrössert ist. Aus diesem Grunde kann die gesamte Vorrichtung auch kleiner gehalten werden.An essential feature of the present invention is that the filter is flown from several sides. This means that the working medium to be cleaned not only flows through the filter in a certain direction, but also through the working medium to be cleaned the filter walls get inside the filter and are led away from there. As a result, most of the surface of the filter is available for filtering, so that the actual filter area is considerably enlarged. For this reason, the entire device can also be kept smaller.
Ein weiterer Vorteil dieser erfindungsgemässen Betriebsart liegt darin, dass die eigentliche Vorrichtung stationär für eine Mehrzahl von beispielsweise Bearbeitungsmaschinen als Quellen von zu reinigendem Arbeitsmedium verwendet werden kann. Hierzu ist beispielsweise ein Zentraltank als Bodentank vorgesehen, der unter Vakuum steht. Durch das Vakuum wird das zu reinigende Arbeitsmittel aus einem entsprechenden Speicherbehälter an den Arbeitsmaschinen angesaugt. Eine Absaugung des zu reinigenden Arbeitsmittels aus dem Zentraltank zu der erfindungsgemässen Vorrichtung erfolgt wiederum über Vakuum.Another advantage of this operating mode according to the invention is that the actual device can be used stationary for a plurality of, for example, processing machines as sources of the working medium to be cleaned. For this purpose, for example, a central tank is provided as a floor tank, which is under vacuum. Due to the vacuum, the working fluid to be cleaned is sucked out of a corresponding storage container on the working machine. The working fluid to be cleaned is again sucked out of the central tank to the device according to the invention by vacuum.
Die Vorrichtung steht dann über eine Zuführleitung mit einer zentralen Versorgungsleitung in Verbindung, über welche gereinigtes Arbeitsmittel wieder den einzelnen Bearbeitungsmaschinen zugeführt wird.The device is then connected via a feed line to a central supply line via which cleaned working fluid is fed back to the individual processing machines.
Ein weiteres wesentliches Merkmal der vorliegendenAnother essential feature of the present
Erfindung ist darin zu sehen, dass der Filter einInvention can be seen in the fact that the filter is a
Metallgewebe, insbesondere ein Edelstahlgewebe, Edelstahlvlies od. dgl . aufweist.Metal mesh, in particular a stainless steel mesh, stainless steel fleece or the like. having.
In der Praxis hat sich herausgestellt, dass die Verwendung von Edelstahlgewebe bzw. Edelstahlvlies durch die Robustheit und zu erzielende Filterfeinheit zu einer wesentlichen Verbesserung der Reinigung führt. Das aus dem Filter austretende Arbeitsmedium ist wesentlich besser gereinigt, als bei bekannten Filtern. Im bevorzugten Ausführungsbeispiel ist der Filter aus einzelnen miteinander verbundenen Filterkissen hergestellt. Mehrere Filterkissen bilden ein Filterpaket. Jedes Filterkissen soll schichtweise aufgebaut sein. Gedacht ist daran, zwischen einer äusseren und einer inneren Filterwand die Filterschicht mit dem Metallgewebe anzuordnen. Falls notwendig, kann auch noch ein Stützgewebe zwischen den einzelnen Filterschichten vorgesehen werden.In practice, it has been found that the use of stainless steel mesh or stainless steel fleece leads to a significant improvement in cleaning due to the robustness and filter fineness to be achieved. The working medium emerging from the filter is cleaned much better than with known filters. In the preferred exemplary embodiment, the filter is produced from individual filter cushions connected to one another. Several filter pads form a filter package. Each filter cushion should be built up in layers. The idea is to arrange the filter layer with the metal mesh between an outer and an inner filter wall. If necessary, a support fabric can also be provided between the individual filter layers.
In einem normalen Filtergehäuse sind die Filter rechteckförmig ausgebildet. Ein Merkmal der vorliegenden Erfindung ist aber auch darauf gerichtet, dass runde Filter verwendet werden. Auch diese bestehen aus einem Stützgerüst mit Abstandshaltern im Inneren, durch die eine äussere und eine innere Filterwand voneinander getrennt werden. Beide Filterwände können von dem zu reinigenden Arbeitsmedium durchströmt werden.The filters are rectangular in a normal filter housing. A feature of the present invention is also directed to the fact that round filters are used. These also consist of a support frame with spacers on the inside, which separate an outer and an inner filter wall. Both filter walls can be flowed through by the working medium to be cleaned.
In einem weiteren Ausführungsbespiel der Erfindung ist vorgesehen, dass derartige runde Filter drehbar angeordnet sind. Dabei taucht nur ein Teil des Filters in das zu reinigende Arbeitsmedium ein, so dass auch dieses eintauchende Teil nur vom Arbeitsmedium durchstörmt wird. Dabei hat sich herausgestellt, dass beim Austreten desIn a further exemplary embodiment of the invention, it is provided that such round filters are rotatably arranged. Only a part of the filter is immersed in the working medium to be cleaned, so that this immersing part is only penetrated by the working medium. It turned out that when the
Filters aus dem Arbeitsmedium der Schmutz auf der Oberfläche des Filters durch die Drehung bzw. die Zentrifugalkraft weggeschleudert wird, so dass er in einer separaten Auffangrinne aufgefangen werden kann.Filters from the working medium, the dirt on the surface of the filter is thrown away by the rotation or the centrifugal force, so that it can be collected in a separate collecting trough.
Ein zweites Merkmal der vorliegenden Erfindung, welches auch bei bekannten Filtern aber insbesondere bei den vorliegenden Filtern mit Edelstahlgewebe bzw. Edelstahlvlies angewendet werden soll, besteht darin, dass dem Filter eine Rückspüleinrichtung zugeordnet ist. Mit dieser Rückspüleinrichtung soll von Zeit zu Zeit ein Abschlagen des Filterkuchens an dem Filter erfolgen. Zu diesem Zweck wird die Rückspülung schlagartig vorgenommen, d.h., ein Rückspülmedium wird unter erheblichen Luftdruck gesetzt und in den Filter eingeführt.A second feature of the present invention, which is also to be used in known filters but in particular in the present filters with stainless steel mesh or stainless steel fleece, is that the filter is assigned a backwashing device. With this From time to time, the backwashing device should knock off the filter cake on the filter. For this purpose, the backwash is carried out abruptly, ie a backwash medium is placed under considerable air pressure and introduced into the filter.
Von untergeordneter Bedeutung ist die Form des Filters. Hier kann es sich um Filterpakete, Kissenfilter od.dgl. handeln.The shape of the filter is of minor importance. This can be filter packs, pillow filters or the like. act.
Der sich in dem Filtergehäuse ansammelnde Schlamm wird bevorzugt mechanisch oder automatisch über das Öffnen einer Klappe oder eines Schiebers entleert.The sludge accumulating in the filter housing is preferably emptied mechanically or automatically by opening a flap or a slide.
Aus dem Filtergehäuse gelangt das Arbeitsmedium durch einen Übertritt in einen Arbeitsbehälter. Bevorzugt kann hier einem zweiten Filterschnitt eine Druckentspannung/Flotation zugeordnet sein, wie sie in der DE 197 18 217 AI beschrieben ist. Dabei findet eine Anreicherung des Arbeitsmediums mit Luftsauerstoff statt, wobei anaerobeThe working medium passes from the filter housing through a passage into a working container. A pressure relief / flotation, as described in DE 197 18 217 AI, can preferably be assigned here to a second filter cut. The working medium is enriched with atmospheric oxygen, whereby anaerobic
Bakterien absterben und so das Arbeitsmedium weder verkeimen noch stinken kann. Beispielsweise kann das angesaugte Arbeitsmedium komprimiert und dann in den Arbeitsraum entspannt werden. Durch die Entspannung nach der Komprimierung demulgiert das Fremdöl, und die mitgeführte Luft wird in sehr kleine Luftbläschen zerschlagen. Damit kommt es zu der bekannten Flotation, wobei sich die Luftbläschen am Fremdöl und an in den KühlSchmiermitteln schwebenden Verschmutzungen ansetzen und diese mit an die Oberfläche des Arbeitsmediums nehmen. Die zu reinigende Emulsion wird quasi im Gegenstrom mit ihrer eigenen Flüssigkeit gespült, die jedoch mit sehr feinen Luftbläschen angereichert ist. - D -Bacteria die and the working medium can neither germinate nor stink. For example, the working medium drawn in can be compressed and then expanded into the working space. Due to the relaxation after compression, the foreign oil demulsifies and the entrained air is broken up into very small air bubbles. This leads to the well-known flotation, whereby the air bubbles attach to the foreign oil and dirt floating in the cooling lubricants and take them to the surface of the working medium. The emulsion to be cleaned is rinsed in countercurrent with its own liquid, which is, however, enriched with very fine air bubbles. - D -
Mit dem aufsteigenden Schaum werden alle im Kühlschmiermittel befindlichen Schwebstoffe und Verunreinigungen an die Oberfläche getragen und können dort von einem Oberflächenabsaugsystem abgenommen werden. Dieses Oberflächenabsaugsystem pumpt bevorzugt die Schmutzpartikel in einen eigenen Schmutzbehälter, wo die Schmutzpartikel ausgetragen werden können.With the rising foam, all suspended matter and contaminants in the cooling lubricant are carried to the surface and can be removed there by a surface suction system. This surface suction system preferably pumps the dirt particles into its own dirt container, where the dirt particles can be removed.
Bevorzugt findet bei der vorliegenden Erfindung noch eine dritte Filtrierung des Arbeitsmediums statt. Dies geschieht durch eine Feinstfiltrierwand, welche eine Sauberzone in den Arbeitsbehältern und im Schmutzbehälter abteilt. Da erst aus dieser Sauberzone unterhalb der Feinstfiltrierwand das Arbeitsmedium wieder entnommen und zurückgeführt wird, erfolgt ein Ansaugen dieses Arbeitsmediums unter dieser Feinstfiltrierwand hindurch.In the present invention, preference is given to a third filtration of the working medium. This is done through a fine filter wall, which divides a clean zone in the work containers and in the dirt container. Since the working medium is only removed and returned from this clean zone below the fine filtering wall, this working medium is sucked in under this fine filtering wall.
Der Boden von Arbeitsbehälter und Schmutzbehälter soll bevorzugt abgeschrägt sein, so dass noch möglicherweise vorhandene Verunreinigungen sich absetzen können und durch ein Ablassventil abgelassen werden können.The bottom of the working container and dirt container should preferably be chamfered so that any contamination that may still be present can settle and can be drained off through a drain valve.
Die vorliegende Vorrichtung hat den wesentlichen Vorteil, dass das Arbeitsmedium rein physikalisch gereinigt wird, ohne dass ein Filter entsorgt werden muss. Das Reinigen geschieht in bis zu drei Schritten. In der ersten Filterstufe werden Schlanmm und Späne je nach Einsatz bis zu einer Filterfeinheit von unter 1 μm entfernt. In der zweiten Reinigungsstufe, in den Arbeitsbehältern, erfolgt ein Entfernen von Öl und Bakterien in einen integriertenThe present device has the essential advantage that the working medium is cleaned physically without a filter having to be disposed of. Cleaning takes place in up to three steps. In the first filter stage, sludge and chips are removed down to a filter fineness of less than 1 μm depending on the application. In the second cleaning stage, in the working containers, oil and bacteria are removed in an integrated one
Schmutzbehälter. Dabei wird das Arbeitsmedium automatisch belüftet und umgewälzt. In der dritten Stufe, der Feinstfiltrierwand, erfolgt ein Entfernen von Leichtöl. Insgesamt handelt es sich um eine kompakte Anlage zur Reinigung und Pflege von Arbeitmedien, die vollautomatisch arbeiten kann. Hopper. The working medium is automatically aerated and circulated. In the third stage, the fine filter wall, light oil is removed. Overall, it is a compact system for cleaning and maintaining working media that can work fully automatically.
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Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele sowie anhand der Zeichnung; diese zeigt inFurther advantages, features and details of the invention result from the following description of preferred exemplary embodiments and from the drawing; this shows in
Figur 1 eine schematisch dargestellte, teilweise geöffnete Vorrichtung zum Pflegen und Reinigen eines Arbeitsmediums;Figure 1 is a schematically shown, partially opened device for maintaining and cleaning a working medium;
Figur 2 ein weiteres Ausführungsbeispiel einer Vorrichtung zum Pflegen und Reinigen eines Arbeitsmediums in Gebrauchslage nahe einer Bearbeitungsmaschine;Figure 2 shows another embodiment of a device for maintaining and cleaning a working medium in the use position near a processing machine;
Figur 3 eine Rückansicht der geöffneten erfindungsgemässen Vorrichtung gemäss Figur 1 ;FIG. 3 shows a rear view of the opened device according to the invention according to FIG. 1;
Figur 4 einen Längsschnitt durch ein erfindungsgemässes Filterpaket;FIG. 4 shows a longitudinal section through a filter pack according to the invention;
Figur 5 eine vergrösserte Darstellung das Längsschnitts gemäss Figur 4 ;FIG. 5 shows an enlarged illustration of the longitudinal section according to FIG. 4;
Figur 6 eine schematische Darstellung einer Anlage mit integrierter Vorrichtung zum Pflegen und Reinigen eines Arbeitsmediums ;Figure 6 is a schematic representation of a system with an integrated device for maintaining and cleaning a working medium;
Figur 7 eine perspektivische Ansicht eines Stützgerüstes für ein Ausführungsbeispiel eines erfindungsgemässen Filterkissens ;FIG. 7 shows a perspective view of a support frame for an exemplary embodiment of a filter cushion according to the invention;
Figur 8 eine schematische Darstellung eines Filtergehäuses für ein Filterkissen gemäss Figur 7.FIG. 8 shows a schematic illustration of a filter housing for a filter cushion according to FIG. 7.
In Figur 1 ist schematisch eine Bearbeitungsmaschine 1 angedeutet, der in einer Bodenausnehmung 31 ein Behälter 2 zur Aufnahme eines Arbeitsmediums 3, beispielsweise eines Kühlschmiermittels , zugeordnet ist. Das Arbeitsmedium 3 wird von einem Säugrüssel 32 mittels einer Rückführpumpe 23 aus dem Behälter 2 entnommen und über eine Rückführleitung 33 der Bearbeitungsmaschine 1 zugeführt. Von der Bearbeitungsmaschine 1 gelangt gebrauchtes Arbeitsmedium wieder über eine Leitung 34 in den Behälter 2.A processing machine 1 is schematically indicated in FIG Cooling lubricant is assigned. The working medium 3 is removed from a receptacle 32 by means of a return pump 23 from the container 2 and fed to the processing machine 1 via a return line 33. Used processing medium returns from the processing machine 1 via a line 34 into the container 2.
Der Behälter 2 ist mit einem Schrägboden 35 ausgestattet, so dass sowohl Arbeitsmedium 3 als auch sich absetzende Verschmutzung zu einer unteren Ecke des Behälters 2 hin gelangen kann. Von dort wird beispielsweise stark verschmutzes Arbeitsmedium über eine Absaugpumpe 36 entnommen und abgeführt .The container 2 is equipped with a sloping floor 35, so that both the working medium 3 and the soiling that is deposited can reach a lower corner of the container 2. From there, heavily soiled working medium is removed and discharged via a suction pump 36.
Zu reinigendes Arbeitsmedium 3 wird durch einen Absaugrüssel 5 dem Behälter 2 entnommen und in ein Filtergehäuse 7 überführt, in dem sich ein Filter 13 befindet. Es durchströmt den Filter 13 und gelangt durch einen Übertritt 12 in eine Vakuumsäule 37, auf der eine Vakuumpumpe 10 aufsitzt. In der Vakuumsäule 37 ist vor der Vakuumpumpe 10 ein Filter 38 vorgesehen. Das Filtrat selbst gelangt aus der Vakuumsäule 37 direkt in den Behälter 2, in dem noch gestrichelt angedeutete Scheidewände 39.1 bis 39.2 vorgesehen sein können.Working medium 3 to be cleaned is removed from the container 2 by a suction nozzle 5 and transferred into a filter housing 7, in which a filter 13 is located. It flows through the filter 13 and passes through a transition 12 into a vacuum column 37 on which a vacuum pump 10 is seated. A filter 38 is provided in the vacuum column 37 in front of the vacuum pump 10. The filtrate itself passes directly from the vacuum column 37 into the container 2, in which partitions 39.1 to 39.2, indicated by dashed lines, can be provided.
Ausgefilterte Verschmutzungen sammeln sich in dem Filtergehäuse 7 am Boden an und können nach Öffnen eines Schiebers 15.1 in einen Transportkarren 16 entlassen werden. Zur Rückspülung des Filters 13 ist mit 14 ein Ventil einer Rückspüleinrichtung angedeutet.Filtered out dirt accumulates in the filter housing 7 on the floor and can be released into a transport cart 16 after opening a slide 15.1. For backwashing the filter 13, a valve of a backwash device is indicated by 14.
In Figur 2 ist wiederum schematisch die Bearbeitungsmaschine 1 angedeutet, welcher der Behälter 2 für das Arbeitsmedium 3 zugeordnet ist. Zur Pflege und Reinigung dieses Arbeitsmediums 3 hängt eine Bedienperson 4 den Absaugrüssel 5 in das Arbeitsmedium 3, welches mittels Vakuum oder Druckpumpe über einen Schlauch 6 dem Filtergehäuse 7 zugeführt wird. Auf dem Filtergehäuse 7 befindet sich noch ein Schwenkarm 8 mit einer Schlauchhalterung 9.The processing machine 1 to which the container 2 for the working medium 3 is assigned is again schematically indicated in FIG. To care for and clean this working medium 3, an operator 4 hangs the suction nozzle 5 into the working medium 3, which is fed to the filter housing 7 by means of a vacuum or pressure pump via a hose 6. On the filter housing 7 there is also a swivel arm 8 with a hose holder 9.
Zum Erzeugen des notwendigen Vakuums zur Entnahme des Arbeitsmediums 3 aus dem Behälter 2 ist in einer erfindungsgemässen Vorrichtung 9 zum Reinigen und Pflegen dieses Arbeitsmediums 3 die Vakuumpumpe 10 vorgesehen, welche Luft aus einem Arbeitsraum 11 ansaugt, wobei der Arbeitsraum 11 über den Übertritt 12 mit dem Filtergehäuse 7 in Verbindung steht. Mit 30 ist ein Luftfilter gekennzeichnet .In order to generate the necessary vacuum for removing the working medium 3 from the container 2, the vacuum pump 10 is provided in a device 9 according to the invention for cleaning and maintaining this working medium 3, which draws in air from a working space 11, the working space 11 via the transition 12 with the Filter housing 7 is connected. An air filter is identified by 30.
In dem Filtergehäuse 7 befindet sich der Filter 13, der im vorliegenden Ausführungsbeispiel aus mehreren Filterpaketen besteht. Eines der Filterpakete 40 ist in Figur 4 und 5 dargestellt. Es weist ein Filterkissen 41 und einen Verbindungsstutzen 42 zum nächsten Filterpaket bzw. zum Übertritt 12 auf. Das Filterkissen 41 ist mehrwandig aufgebaut, wie dies in Figur 5 erkennbar ist. Die äusserste Lage wird von einer äusseren Filterwand 43 gebildet, welche Durchlässe 44 für das Arbeitsmedium aufweist. Auf die äussere Filterwand 43 folgt die eigentliche Filterschicht 44, die aus einem Metallvlies, bevorzugt einem Edelstahlgewebe besteht. Darauf folgt eine Stützgewebeschicht 45, die stabiler und gröber als die Filterschicht 44 ist. Nach innen folgt eine innere Filterwand 46 mit den entsprechenden Durchlässen.The filter 13, which in the present exemplary embodiment consists of several filter packets, is located in the filter housing 7. One of the filter packs 40 is shown in FIGS. 4 and 5. It has a filter pad 41 and a connecting piece 42 to the next filter pack or to the transition 12. The filter pad 41 is constructed with multiple walls, as can be seen in FIG. 5. The outermost layer is formed by an outer filter wall 43 which has passages 44 for the working medium. The actual filter layer 44, which consists of a metal fleece, preferably a stainless steel mesh, follows the outer filter wall 43. This is followed by a support fabric layer 45, which is more stable and coarser than the filter layer 44. An inner filter wall 46 with the corresponding passages follows inwards.
Die beiden sich gegenüberliegenden Wandaufbauten werden durch Abstandshalter 47 auf Distanz gehalten. Dem Filtergehäuse 7 ist die nur schematisch dargestellte Rückspüleinrichtung 14 zugeordnet, mit der der Filter 13 rückgespült werden kann. Dies geschieht bevorzugt schlagartig, wozu die Rückspüleinrichtung einen Lufttank aufweist, der unter einem Druck von etwa 1 - 6 bar steht. Mit Hilfe dieser Rückspüleinrichtung 14 wird ein sich am Filter 13 ansetzender Kuchen schlagartig abgeschlagen.The two opposing wall structures are kept at a distance by spacers 47. The backwashing device 14, with which the filter 13 can be backwashed, is assigned to the filter housing 7. This is preferably done suddenly, for which purpose the backwashing device has an air tank which is under a pressure of about 1-6 bar. With the help of this backwashing device 14, a cake that deposits on the filter 13 is abruptly knocked off.
Der Kuchen bzw. Schlamm kann aus dem Filtergehäuse 7 durch eine offenbare Klappe 15 ausgetragen werden. Im vorliegenden Ausführungsbeispiel fällt er in einen Transportkarren 16.The cake or sludge can be discharged from the filter housing 7 through an open flap 15. In the present exemplary embodiment, it falls into a transport cart 16.
Im Rahmen der Erfindung liegt auch, dass in dem Arbeitsraum 11 eine Druckentspannung erfolgt, wie sie beispielsweise in der DE 197 18 217 AI beschrieben ist. Deshalb soll hier auf eine nähere Beschreibung verzichtet werden.It is also within the scope of the invention that pressure relief takes place in the work space 11, as described, for example, in DE 197 18 217 A1. Therefore, a more detailed description should be omitted here.
Gemäss Figur 3 teilt sich der Arbeitsraum 11 in verschiedene Behälter auf. Im vorliegenden Ausführungsbeispiel sind zwei Arbeitsbehälter 17.1 und 17.2 erkennbar, denen noch ein Schmutzbehälter 18 zugeordnet ist. Alle drei Behälter 17.1, 17.2 und 18 sind noch durch eine Feinstfiltrierwand 19 unterteilt.According to FIG. 3, the work space 11 is divided into different containers. In the present exemplary embodiment, two working containers 17.1 and 17.2 can be seen, to which a dirt container 18 is also assigned. All three containers 17.1, 17.2 and 18 are still divided by a fine filter wall 19.
In dem Arbeitsbehälter 17.1 ist erkennbar, dass ein aufschwimmendes Öl 20 od.dgl. durch einen Schwimmer 21 eines Ölabsaugsystems entnommen wird. Dieser Schwimmer 21 ist bevorzugt so ausgestaltet, wie es ebenfalls in der DE 197 18 217 AI beschrieben ist.In the working container 17.1 it can be seen that a floating oil 20 or the like. is removed from an oil extraction system by a float 21. This float 21 is preferably designed as it is also described in DE 197 18 217 AI.
Der Schwimmer 21 ist hierzu mit einer Pumpe 22 verbunden, über welche auch beispielsweise das abgesaugte, verschmutzte Arbeitsmedium nochmals zurück in das Filtergehäuse 7 oder aber in den Schmutzbehälter 18 geleitet werden kann.For this purpose, the float 21 is connected to a pump 22, by means of which, for example, the sucked, contaminated working medium is returned to the pump Filter housing 7 or can be passed into the dirt container 18.
Eine Rückführpumpe 23 entnimmt gereinigtes und gepflegtes Arbeitsmedium aus den Arbeitsbehältern 17.1 und 17.2 von unterhalb der Feinstfiltrierwand 19 und führt dieses Arbeitsmedium über eine Leitung 24 wieder zurück zu dem Behälter 2. Ein entsprechendes Entnahmerohr od.dgl., das in den Bereich unterhalb der Feinstfiltrierwand 19 einragt, ist nicht gezeigt.A return pump 23 removes cleaned and maintained working medium from the working containers 17.1 and 17.2 from below the fine filtering wall 19 and leads this working medium back to the container 2 via a line 24. A corresponding extraction pipe or the like, which is in the area below the fine filtering wall 19 protrudes is not shown.
Dem Schmutzbehälter 18 ist ein Ablassventil 25 zugeordnet, über das verschmutztes Arbeitsmedium in einen Beistellbehälter 26 geleitet werden kann.A drain valve 25 is assigned to the dirt container 18, via which contaminated working medium can be directed into an additional container 26.
Ferner ist erkennbar, dass ein Boden 27 der Arbeitsbehälter und des Schmutzbehälters abgeschrägt ist. Am etwa tiefsten Punkt ist ein Ablassventil 28 vorgesehen, über das ein Schlammkuchen ausgetragen werden kann.It can also be seen that a bottom 27 of the work container and the dirt container is beveled. At the lowest point, a drain valve 28 is provided, through which a sludge cake can be discharged.
Der gesamte Füllstand in den Arbeitsbehältern 17.1, 17.2 und im Schmutzbehälter 18 wird durch entsprechende Nieveauüberwachungen 29.1 bis 29.3 überwacht.The entire fill level in the working containers 17.1, 17.2 and in the dirt container 18 is monitored by appropriate level monitors 29.1 to 29.3.
Die Funktionsweise der vorliegenden Erfindung ist folgende:The operation of the present invention is as follows:
Über den Absaugrüssel 5 wird Arbeitsmedium 3 aus dem Behälter 2 entnommen, indem die Vakuumpumpe 10 den Arbeitsraum 11 unter Vakuum setzt. Hierdurch wird Arbeitsmedium 3 durch den Schlauch 6 in das Filtergehäuse 7 eingesaugt, durchströmt dort den Filter 13 und gelangt in den Übertritt 12 und damit in den Arbeitsraum 11.Working medium 3 is removed from the container 2 via the suction nozzle 5 by the vacuum pump 10 placing the working space 11 under vacuum. As a result, working medium 3 is sucked through the hose 6 into the filter housing 7, flows through the filter 13 there and reaches the transition 12 and thus the working space 11.
In Figur 1 ist erkennbar, dass jedes Filterkissen 41 des Filters 13 allseitig von dem Arbeitsmedium 3 angeströmt wird. Bis auf die Verbindungsbereiche der einzelnen Filterkissen 41 wirkt die gesamte Oberfläche jedes Filterkissens 41 als Filter. Damit steht die grösstmögliche Filterfläche zur Verfügung.It can be seen in FIG. 1 that the working medium 3 flows on each side of the filter cushion 41 of the filter 13 becomes. Except for the connection areas of the individual filter pads 41, the entire surface of each filter pad 41 acts as a filter. This provides the largest possible filter area.
Das Arbeitsmedium 3 gelangt durch die Filterwand in das Innere des Filters und über die einzelnen Verbindungsstutzen 42 zu dem Übertritt 12.The working medium 3 passes through the filter wall into the interior of the filter and via the individual connecting pieces 42 to the transition 12.
Am Filter 13 bleiben ca. 95 bis 99,9 % von Schlamm und Fremdpartkeln hängen und fallen nach unten oder setzen sich als Filterkuchen fest. Infolge der gewählten Strömungstechnik von aussen nach innen hat sich herausgestellt, dass der zurückgehaltene Schlamm quasi auf der Filteroberfläche brikettiert, so dass er mittels Rückspülung relativ leicht abgeschlagen werden kann. Deshalb wird von Zeit zu Zeit die Rückspüleinrichtung 14 in Tätigkeit versetzt. Dabei wird der Filterkuchen von dem Filter 13 abgeschlagen. Dieser kann ebenfalls von Zeit zu Zeit durch Öffnen der Klappe 15 aus dem Filtergehäuse 7 manuell oder automatisch ausgetragen werden.About 95 to 99.9% of sludge and foreign particles remain on filter 13 and fall down or settle as a filter cake. As a result of the selected flow technology from the outside in, it has been found that the retained sludge virtually briquettes on the filter surface, so that it can be removed relatively easily by backwashing. Therefore, the backwash device 14 is activated from time to time. The filter cake is knocked off the filter 13. This can also be carried out manually or automatically from time to time by opening the flap 15 from the filter housing 7.
Die Filterkissen 13 können jede beliebige Form haben, die sich insbesondere auch nach der Form des Filtergehäuses 7 richtet. Ist das Filtergehäuse 7 rechteckig, werden normalerweise auch die Filterkissen rechteckig ausgestaltet. Ist das Filtergehäuse rund, so wird eine radförmige Form des Filterkissens gewählt, wobei dann der Verbindungsstutzen 42 quasi die Nabe bildet.The filter cushions 13 can have any shape, which in particular also depends on the shape of the filter housing 7. If the filter housing 7 is rectangular, the filter cushions are normally also rectangular. If the filter housing is round, a wheel-shaped shape of the filter cushion is selected, in which case the connecting piece 42 virtually forms the hub.
Im Arbeitsraum 11 findet eine zweite Filtrierstufe statt. Über den Schwimmer 21 als Teil eines integrierten Oberflächenabsaugsystems wird aufschwimmendes Öl usw. automatisch abgesaugt und in den Schmutzbehälter 18 abgeführt. Durch ein nicht näher gezeigtes integriertes Druckentspannungsflotationsverfahren wird das Arbeitsmedium zusätzlich mit feinsten Luftsauerstoffbläschen angereichert. Dadurch wird vermieden, dass sich Bakterien und Pilze bilden, und es entsteht keine Geruchsbelästigung .A second filtration stage takes place in the work space 11. Floating oil etc. is automatically sucked off via the float 21 as part of an integrated surface suction system and discharged into the dirt container 18. By an integrated not shown Pressure relief flotation processes also enrich the working medium with the finest air bubbles. This prevents bacteria and fungi from forming and there is no odor nuisance.
Da das Arbeitsmedium erst unterhalb der Feinstfiltrierwand 19 entnommen wird, findet durch diese Feinstfiltrierwand eine dritte Filterung statt, wodurch zusätzlich Leichtöle und Schwebstoffe zurückgehalten werden, bevor das Arbeitsmedium in der Sauberzone unterhalb der Feinstfil- trierwand 19 für die Rückführung in den Behälter 2 bereit steht. Dies geschieht über die Rückführpumpe 23 und die Leitung 24.Since the working medium is only removed below the fine filtering wall 19, a third filtering takes place through this fine filtering wall, whereby additional light oils and suspended matter are retained before the working medium in the clean zone below the fine filtering wall 19 is ready for the return to the container 2. This is done via the return pump 23 and the line 24.
In Figur 6 ist eine stationäre Vorrichtung 9 zum Pflegen und Reinigen eines Arbeitsmediums gezeigt. Diese Vorrichtung 9 steht über eine Leitung bzw. einen Schlauch 6 mit einem Bodentank 48 in Verbindung. Aus diesem Bodentank 48 wird Arbeitsmedium über die Absaugleitung 6 von der Vorrichtung und über Zweigleitung 49 und 50 von den jeweiligen Bearbeitungsmaschinen 1.1 und 1.2 angesaugt.FIG. 6 shows a stationary device 9 for maintaining and cleaning a working medium. This device 9 is connected to a floor tank 48 via a line or a hose 6. Working medium is drawn in from this floor tank 48 via the suction line 6 by the device and via branch lines 49 and 50 by the respective processing machines 1.1 and 1.2.
Das in der Vorrichtung 9 gereinigte Arbeitsmedium gelangt über die Leitung 24 in eine Zentralleitung 51, über die wiederum die einzelnen Bearbeitungsmaschinen 1.1 und 1.2 mit gereinigtem Arbeitsmedium versorgt werden.The working medium cleaned in the device 9 passes via the line 24 into a central line 51, via which the individual processing machines 1.1 and 1.2 are in turn supplied with cleaned working medium.
Mit einer derartigen Anlage können eine Vielzahl von Arbeitsmaschinen über nur eine einzige Vorrichtung 9 mit gereinigtem Arbeitsmedium versehen werden.With such a system, a large number of working machines can be provided with cleaned working medium via only a single device 9.
In Figur 7 ist ein Stützgerüst 52 für ein weiteres Ausführungsbeispiel eines Filterkissens 41.1 dargestellt. In diesem Ausführungsbeispiel ist das Filterkissen 41.1 (siehe Figur 8) rund ausgebildet, so auch das Stützgerüst 52. Das Stützgerüst 52 besteht aus einem Aussenrahmen 53 und einem Mittenring 54. Zwischen dem Aussenrahmen 53 und dem Mittenring 54 erstrecken sich Radialstege 55, die noch über konzentrische Ringe 56 miteinander verbunden sind. Von einigen der Radialstegen 55 ragen Abstandhalter 47.1 ab.FIG. 7 shows a support frame 52 for a further exemplary embodiment of a filter cushion 41.1. In this exemplary embodiment, the filter cushion 41.1 (see FIG. 8) is round, as is the supporting frame 52. The support frame 52 consists of an outer frame 53 and a center ring 54. Between the outer frame 53 and the center ring 54 extend radial webs 55, which are still connected to one another via concentric rings 56. Spacers 47.1 protrude from some of the radial webs 55.
Auf die Radialstege 55 und die konzentrischen Ringe 56 wird ein Filtertuch aufgebracht, das in seinem Aufbau demjenigen gemäss Figur 5 entsprechen kann. Ein weiterer Filteraufbau wird auf die Abstandshalter 47.1 aufgebracht, wobei auch dieser Wandaufbau demjenigen gemäss Figur 5 entsprechen kann .A filter cloth is applied to the radial webs 55 and the concentric rings 56, the structure of which can correspond to that according to FIG. 5. A further filter structure is applied to the spacers 47.1, whereby this wall structure can also correspond to that according to FIG. 5.
Ein derartiges Filterkissen 41.1 wird gemäss Figur 8 in ein Filtergehäuse 7.1 eingesetzt und ist dort bevorzugt drehbar gelagert. Dabei ist selbstverständlich denkbar, dass mehrere derartige runde Filterkissen 41.1 hintereinander angeordnet sind, wie dies für den Filter 13 gemäss Figur 1 gezeigt ist. In diesem Fall ist in den Mittenring 54 ein Verbindungsstutzen ähnlich dem Verbindungsstutzen 42 eingesetzt. Dieser Verbindungsstutzen 42 dient dann gleichzeitig als Nabe. Die Ansaugung des Arbeitsmediums 3 in das Filterkissen 41.1 geschieht durch diesenSuch a filter cushion 41.1 is inserted into a filter housing 7.1 according to FIG. 8 and is preferably rotatably mounted there. It is of course conceivable that several such round filter cushions 41.1 are arranged one behind the other, as is shown for the filter 13 according to FIG. 1. In this case, a connecting piece similar to the connecting piece 42 is inserted in the center ring 54. This connecting piece 42 then also serves as a hub. The working medium 3 is sucked into the filter cushion 41.1 by this
Verbindungsstutzen 42, wie oben in der Funktionsweise der Erfindung beschrieben.Connector 42, as described above in the operation of the invention.
Das zu reinigende Arbeitsmedium wird, wie durch den Pfeil 57 angedeutet, unterhalb des Filterkissens 41.1 in das Filtergehäuse 7.1 eingegeben. Das Filterkissen 41.1 dreht in dem Arbeitsmedium 3, so dass das Arbeitsmedium 3 in das Innere des Filterkissens 41.1 eindringen kann. Dies wird durch Druck oder Vakuum unterstützt.The working medium to be cleaned is, as indicated by the arrow 57, entered into the filter housing 7.1 below the filter pad 41.1. The filter pad 41.1 rotates in the working medium 3, so that the working medium 3 can penetrate into the interior of the filter pad 41.1. This is supported by pressure or vacuum.
Der sich auf dem Filterkissen 41.1 absetzende Schmutz wird infolge der Drehung des Filterkissens 41.1 oberhalb des Arbeitsmediums 3 abgeschleudert und gelangt so in eine Auffangrinne 58, die als Teil des Filtergehäuses 7.1 ausgebildet ist. Hierdurch wird ein Zeitraum bis zu einer notwendigen Rückspülung verlängert. The dirt settling on the filter pad 41.1 is due to the rotation of the filter pad 41.1 above the Working medium 3 is thrown off and thus passes into a collecting trough 58 which is designed as part of the filter housing 7.1. This extends a period of time until a backwash is necessary.

Claims

P a t e n t a n s p r ü c h e Patent claims
1. Vorrichtung zum Pflegen und Reinigen eines Arbeitsmediums (3), insbesondere von Kühlschmiermitteln, Ölen, Gleitschleifwässer, KFZ-Waschwässer und Waschbädern, welches über zumindest eine Leitung, insbesondere einen Schlauch (6), zumindest einem Filter zuführbar ist,1. Device for maintaining and cleaning a working medium (3), in particular cooling lubricants, oils, slide grinding water, car wash water and washing baths, which can be supplied via at least one line, in particular a hose (6), at least one filter,
dadurch gekennzeichnet,characterized,
dass dem Filter (13) bzw. einem Filterkissen (41, 41.1) eine vakuum- und/oder druckerzeugende Einrichtung (10) zugeordnet ist und der Filter von mehreren Seiten her anströmbar ist, wobei das Arbeitsmedium (3) in das Filterkissen eintritt und aus dem Inneren des Filterkissens (41, 41.1) zu einem Übertritt gelangt.that the filter (13) or a filter cushion (41, 41.1) is assigned a vacuum and / or pressure generating device (10) and the filter can be flowed from several sides, the working medium (3) entering and exiting the filter cushion the inside of the filter pad (41, 41.1) comes to a crossing.
2. Vorrichtung zum Pflegen und Reinigen eines Arbeitsmediums (3), insbesondere von Kühlschmiermitteln, Ölen, Gleitschleifwässer, KFT-Waschwässer und Waschbädern, welches über zumindest eine Leitung, insbesondere einen Schlauch (6), zumindest einem Filter (13) zuführbar ist, dadurch gekennzeichnet, dass dem Filter (13) bzw. ein Filterkissen (41, 41.1) eine Rückspüleinrichtung (14) zugeordnet ist.2. Device for maintaining and cleaning a working medium (3), in particular cooling lubricants, oils, slide grinding water, KFT washing water and washing baths, which can be supplied via at least one line, in particular a hose (6), at least one filter (13), thereby characterized in that a backwashing device (14) is associated with the filter (13) or a filter cushion (41, 41.1).
3. Vorrichtung zum Pflegen und Reinigen eines Arbeitsmediums (3), insbesondere von Kühlschmiermitteln, Ölen, Gleitschleifwässer , KFZ-Waschwässer und Waschbädern, welches über zumindest eine Leitung, insbesondere einen Schlauch (6), zumindest einem Filter (13) zuführbar ist, dadurch gekennzeichnet, dass der Filter (13) ein Metallgewebe, insbesondere ein Edelstahlgewebe, Edelstahlvlies od.dgl. aufweist.3. Device for maintaining and cleaning a working medium (3), in particular cooling lubricants, oils, slide grinding water, car wash water and washing baths, which can be supplied via at least one line, in particular a hose (6), at least one filter (13), thereby characterized that the filter (13) a Metal mesh, in particular a stainless steel mesh, stainless steel fleece or the like. having.
4. Vorrichtung nach einem der Ansprüche 1 - 3, dadurch gekennzeichnet, dass dem Filter (13) eine vakuumerzeugende4. Device according to one of claims 1-3, characterized in that the filter (13) a vacuum generating
Einrichtung (10) in Strömungsrichtung des ArbeitsmediumsDevice (10) in the flow direction of the working medium
(3) nachgeordnet und/oder eine druckerzeugende Einrichtung vorgeschaltet ist.(3) downstream and / or a pressure generating device is connected upstream.
5. Vorrichtung nach wenigstens einem der Ansprüche 1 - 4, dadurch gekennzeichnet, dass der Filter aus einem oder mehreren miteinander verbundenen Filterpaketen bzw. -kissen (41, 41.1) besteht.5. The device according to at least one of claims 1-4, characterized in that the filter consists of one or more interconnected filter packets or pillows (41, 41.1).
6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass zwei innere, sich gegenüberliegende Filterwände (46) über Abstandshalter (47, 47.1) voneinander getrennt sind.6. The device according to claim 5, characterized in that two inner, opposing filter walls (46) are separated from one another via spacers (47, 47.1).
7. Vorrichtung nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass ein Filterkissen (41) aus zumindest einer äusseren und einer inneren Filterwand (43, 46) aufgebaut ist, zwischen denen sich die Filterschicht (44) mit dem Metallgewebe befindet.7. The device according to claim 5 or 6, characterized in that a filter cushion (41) from at least one outer and one inner filter wall (43, 46) is constructed, between which the filter layer (44) with the metal mesh is located.
8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass zwischen der Filterschicht (44) und der inneren Filterwand (46) noch eine Stützgewebeschicht (45) vorgesehen ist.8. The device according to claim 7, characterized in that between the filter layer (44) and the inner filter wall (46) a support fabric layer (45) is also provided.
9. Vorrichtung nach wenigstens einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass das Filterkissen (41.1) rund ausgebildet und etwa mittig einen Verbindungsstutzen zu einem Übertritt aufweist. 9. The device according to at least one of claims 1 to 8, characterized in that the filter pad (41.1) is round and has a connecting piece approximately in the middle to a transition.
10. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, dass das Filterkissen (41.1) drehbar ist.10. The device according to claim 9, characterized in that the filter cushion (41.1) is rotatable.
11. Vorrichtung nach Anspruch 9 oder 10, dadurch gekennzeichnet, dass das Filterkissen (41.1) in einem11. The device according to claim 9 or 10, characterized in that the filter cushion (41.1) in one
Filtergehäuse (7.1) angeordnet und diem eine Auffangrinne (58) zugeordnet ist.Filter housing (7.1) arranged and to which a collecting trough (58) is assigned.
12. Vorrichtung nach wenigstens einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass der Filter (13) in einem Gehäuse (7) (Spänedekanter) mit Klappen- oder Schieberentleerung angeordnet ist.12. The device according to at least one of claims 1 to 10, characterized in that the filter (13) in a housing (7) (chip decanter) is arranged with flap or slide emptying.
13. Vorrichtung nach Anspruch 11, dadurch gekennzeichnet, dass ein Übertritt (12) aus dem Spänedekanter (7) in einen13. The apparatus according to claim 11, characterized in that a transition (12) from the chip decanter (7) into one
Arbeitsrau (2, 11, 17.1, 17.2, 37) einmündet.Arbeitsrau (2, 11, 17.1, 17.2, 37) opens out.
14. Vorrichtung nach Anspruch 13, dadurch gekennzeichnet, dass dem Arbeitsmedium (3) in dem Arbeitsraum (17.1, 17.2) ein Oberflächenabsaugsystem (21, 22) zugeordnet ist.14. The apparatus according to claim 13, characterized in that a surface suction system (21, 22) is assigned to the working medium (3) in the working space (17.1, 17.2).
15. Vorrichtung nach Anspruch 13 oder 14, dadurch gekennzeichnet, dass dem Arbeitsbehälter (17.1, 17.2) ein Feinstfilter, insbesondere eine Feinstfiltrierwand (19) zugeordnet ist.15. The apparatus according to claim 13 or 14, characterized in that the working container (17.1, 17.2) is assigned a fine filter, in particular a fine filtering wall (19).
16. Vorrichtung nach einem der Ansprüche 13 - 15, dadurch gekennzeichnet, dass dem Arbeitsbehälter (17.1, 17.2) ein Schmutzbehälter (18) zugeordnet ist.16. The device according to one of claims 13 - 15, characterized in that the working container (17.1, 17.2) is assigned a dirt container (18).
17. Vorrichtung nach wenigstens einem der Ansprüche 13 - 16, dadurch gekennzeichnet, dass der Boden (27) von Arbeitsbehälter (2, 17.1, 17.2) und/oder Schmutzbehälter (18) abgeschrägt ist. 17. The device according to at least one of claims 13 - 16, characterized in that the bottom (27) of the working container (2, 17.1, 17.2) and / or dirt container (18) is chamfered.
18. Vorrichtung nach Anspruch 17, dadurch gekennzeichnet, dass sich am tiefsten Punkt von Arbeitsbehälter (2, 17.1, 17.2) und/oder Schmutzbehälter (18) ein Ablassventil (28) befindet.18. The apparatus according to claim 17, characterized in that a drain valve (28) is located at the lowest point of the working container (2, 17.1, 17.2) and / or dirt container (18).
19. Vorrichtung nach wenigstens einem der Ansprüche 13 - 18, dadurch gekennzeichnet, dass dem Arbeitsbehälter (2, 17.1, 17.2) und/oder Schmutzbehälter (18) Einrichtungen zur Niveau-Überwachung zugeordnet sind.19. The device according to at least one of claims 13 - 18, characterized in that the work container (2, 17.1, 17.2) and / or dirt container (18) are assigned devices for level monitoring.
20. Anlage mit einer Vorrichtung nach wenigstens einem der Ansprüche 1 bis 19, dadurch gekennzeichnet, dass ein Zentraltank (48) über Ansaugleitungen (6, 49, 50) mit der Vorrichtung (9) und einer Mehrzahl von Quellen (1.1, 1.2) für ein Arbeitsmedium (3) verbunden ist, wobei die Zuführung von gereinigten Arbeitsmedium zentral von der Vorrichtung (9) aus erfolgt. 20. System with a device according to at least one of claims 1 to 19, characterized in that a central tank (48) via suction lines (6, 49, 50) with the device (9) and a plurality of sources (1.1, 1.2) for a working medium (3) is connected, the supply of cleaned working medium taking place centrally from the device (9).
PCT/EP2000/006182 1999-07-01 2000-07-03 Device for maintaining and cleaning a working medium WO2001002077A2 (en)

Priority Applications (3)

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KR1020017016568A KR20020019471A (en) 1999-07-01 2000-07-03 Device for maintaining and cleaning a working medium
EP00951327A EP1200171A2 (en) 1999-07-01 2000-07-03 Device for maintaining and cleaning a working medium
JP2001507562A JP2003503188A (en) 1999-07-01 2000-07-03 Equipment for maintaining and cleaning working media

Applications Claiming Priority (4)

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DE29911482U DE29911482U1 (en) 1999-07-01 1999-07-01 Device for maintaining and cleaning a working medium
DE29911482.1 1999-07-01
DE19937701.4 1999-08-10
DE19937701A DE19937701A1 (en) 1999-07-01 1999-08-10 Device for maintaining and cleaning a working medium

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DE10162710B4 (en) * 2001-08-24 2013-01-17 Gkd - Gebr. Kufferath Ag Method and device for the care and cleaning of a working medium

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US3907681A (en) * 1973-11-12 1975-09-23 F W Means & Company Filter system and method
US4789474A (en) * 1985-10-17 1988-12-06 Guy Gaudfrin Filter for liquids laden with solid particles, and a filter installation including such a filter
US5820756A (en) * 1990-08-30 1998-10-13 Mcewen; Stephen N. Disc filter assembly for machine tool coolant
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Publication number Priority date Publication date Assignee Title
GB282542A (en) * 1926-11-15 1927-12-29 Joseph Herman Dine Improvements in and relating to separators and filters for liquids
US3907681A (en) * 1973-11-12 1975-09-23 F W Means & Company Filter system and method
US4789474A (en) * 1985-10-17 1988-12-06 Guy Gaudfrin Filter for liquids laden with solid particles, and a filter installation including such a filter
US5820756A (en) * 1990-08-30 1998-10-13 Mcewen; Stephen N. Disc filter assembly for machine tool coolant
US5849202A (en) * 1992-11-06 1998-12-15 Andritz-Patentverwaltungs-Gesellschaft M.B.H. Rotary disc filtration process having means to prevent settlement of solids

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Publication number Priority date Publication date Assignee Title
DE10140709A1 (en) * 2001-08-24 2003-03-20 C & H Werkzeugmaschinen Gmbh Work medium cleaning process comprises forming filter surface and passing medium through it and to filtrate outlet
DE10140709B4 (en) * 2001-08-24 2006-02-02 Z-Filter Gmbh + Co. Kg Method for maintaining and cleaning a working medium
DE10162710B4 (en) * 2001-08-24 2013-01-17 Gkd - Gebr. Kufferath Ag Method and device for the care and cleaning of a working medium

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JP2003503188A (en) 2003-01-28
EP1200171A2 (en) 2002-05-02
WO2001002077A3 (en) 2001-05-31
CN1372486A (en) 2002-10-02

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