EP0903432A2 - Machine à nettoyer - Google Patents

Machine à nettoyer Download PDF

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Publication number
EP0903432A2
EP0903432A2 EP98117607A EP98117607A EP0903432A2 EP 0903432 A2 EP0903432 A2 EP 0903432A2 EP 98117607 A EP98117607 A EP 98117607A EP 98117607 A EP98117607 A EP 98117607A EP 0903432 A2 EP0903432 A2 EP 0903432A2
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EP
European Patent Office
Prior art keywords
filter
solvent
cleaning machine
machine according
cleaning
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Withdrawn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
EP98117607A
Other languages
German (de)
English (en)
Other versions
EP0903432A3 (fr
Inventor
Walter Schirl
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0903432A2 publication Critical patent/EP0903432A2/fr
Publication of EP0903432A3 publication Critical patent/EP0903432A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F43/00—Dry-cleaning apparatus or methods using volatile solvents
    • D06F43/08—Associated apparatus for handling and recovering the solvents
    • D06F43/081—Reclaiming or recovering the solvent from a mixture of solvent and contaminants, e.g. by distilling
    • D06F43/085—Filtering arrangements; Filter cleaning; Filter-aid powder dispensers

Definitions

  • the invention relates to a cleaning machine, in particular for cleaning textiles or the like, after Preamble of claim 1.
  • the filters for the impurities or with Adsorbent contaminated, for example Silicon dioxide have a certain filter capacity that e.g. B. a daily requirement in the operation of the cleaning machine can correspond. Then the filters must be cleaned or be replaced so that the cleaning operation can be continued can.
  • Cleaning machines are commercially available from so-called centrifugal filters are used.
  • the filter is constructed with rotationally symmetrical filter disks, which in a rotational movement are thrown so that the washed-up impurities or that with impurities loaded adsorbent outside of the filter discs to be separated. Then the solvent-containing residue contaminated with impurities processed in a distillation plant and so obtained solvent in turn the cleaning process fed.
  • the Spin filter In combination with this sedimentation process, the Spin filter has the disadvantage that due to the large volume of the solvent that occurs when spinning off correspondingly large excess in the sedimentation vessel must be provided.
  • centrifugal filters mentioned also have the disadvantage that the residues of contaminated adsorbent and solvent are not completely thrown outwards by the centrifugal movement, but are partly pressed through the filter disks or remain on the filter. This will make it regular a time-consuming manual cleaning, which is accompanied by the opening of the filter housing and in some cases considerable contamination of the surroundings of the centrifugal filter, is necessary.
  • a centrifugal filter due to its construction, such a centrifugal filter is comparatively complex to manufacture and therefore costly.
  • EP 191 423 is a cleaning machine become known, in which a partial backwash of the filter.
  • bell-like backwashing bodies tightly sealed on a filter on the inflow side attached and connected to a backwash line.
  • the pressure prevailing on the drain side of the filter is in Area of the rinsing body of the filter in Flows in the opposite direction and thus backwashed in this zone.
  • the device according to this document works obviously without adsorbent in the Solvent cycle.
  • the object of the invention is a Cleaning machine with an automatic filter cleaning to propose in which the effort compared to the above-described cleaning machines and the Efficiency of the filter can be improved on a smaller scale can.
  • This task is based on a cleaning machine in the introduction mentioned by the characteristic features of the Claim 1 solved.
  • the flow direction of the Solvent through the filter housing 14 for backwashing the Filter insert is reversible.
  • the reversal of the Flow direction can, for example, by appropriate Valve arrangement in the solvent circuit accomplished be, the solvent supply or removal of each decouples or connects a connecting line of the filter housing couples them.
  • the solvent contaminated by filter cleaning can a treatment stage for the recovery of the solvent e.g. B. a distillation plant, but preferably one Sedimentation device are supplied.
  • a backwashable filter can be cleaned reliably and is to realize with comparatively little effort. It requires in particular, no complex drive, as for the above centrifugal filter mentioned is necessary.
  • a particularly robust and permanently reusable filter can be in a special embodiment using a Form metal sieve insert.
  • a Form metal sieve insert for example made of nylon fabric or other restraint systems.
  • the shape of a filter that can be backwashed according to the invention preferably chosen so that there is an increase in surface area compared to a cylindrical shape. In this way the Filter capacity increased with comparable external dimensions.
  • Filter cartridges are provided, for example in parallel to be arranged in the solvent circuit.
  • Such an arrangement of several filter inserts enables for example the adaptation to cleaning machines capacities of different sizes without this filter inserts of different sizes are necessary.
  • filters could also be provided, for example be a filter replacement during operation to be able to make, provided the individual filters over corresponding valves can be connected or disconnected.
  • a Adsorbent e.g. B. diatomaceous earth and / or silicate, in known manner used. This enables the cleaning of the Solvent from soluble impurities, which is on the Fix filterable adsorbent.
  • this Embodiment is used to prepare the solvent Sedimentation vessel provided in which the with impurities loaded adsorbent using a Gravitational sedimentation is separated from the solvent.
  • a such sedimentation brings against others Preparation process, for example a distillation, the Advantage of a large energy saving as well as a surprising clean separation between clear solvent and dirt-laden adsorbent.
  • the volume of solvent used for backwashing the backflushable filter is required is significantly smaller than that when spinning a known spin filter amount produced.
  • the supernatant above the procedure for the clarified solvent at the Sedimentation vessel can be provided significantly smaller. It is thus an operation of the cleaning machine possible until this Sedimentation vessel almost completely with contaminated Adsorbent is filled.
  • the almost full one Sedimentation vessel can against a new, preferably with fresh solvent filled container or replaced also be emptied and cleaned.
  • a backwashable filter according to the invention is preferred used for solvents made from a chlorine-free Hydrocarbon exist.
  • the operation is fundamentally conceivable with other solvents, chlorine-free
  • hydrocarbons are not least because of their good ones Environmental compatibility, especially in recent times for use preferred for cleaning machines.
  • the cleaning machine 1 according to FIG. 1 has a Solvent tank 2, which has a pump 3 and three valves 4, 5, 6 is connected to a cleaning container 7, in which a Washing drum 8 is indicated.
  • Solvent tank 2 which has a pump 3 and three valves 4, 5, 6 is connected to a cleaning container 7, in which a Washing drum 8 is indicated.
  • the use of an or several more solvent tanks 2 would be in another Embodiment also possible.
  • the cleaning container 7 is connected to a valve 9 so-called needle catcher 10 as a coarse filter in connection.
  • the outlet 11 of the needle catcher 10 is connected to the suction line 12 of the pump 3 in connection.
  • the pump 3 is connected to another valve 13 a filter housing 14 in connection, in the interior of which Filter insert 15 is located.
  • the filter insert 15 is over a further valve 16 with the inlet line 17 of the Cleaning container 7 connected.
  • the sedimentation vessel has an overflow 24 on the via a valve 25 and a line 26 with the Intake 12 of the pump 3 is connected.
  • the operation of the cleaning machine 1 according to the invention can for example, take place as follows.
  • valve 4 closed and the circulating solvent pumped over, wherein valve 9 is additionally open.
  • Needle catchers 10 become coarse contaminants intercepted. This start-up phase without solvent filtration can a certain amount of time, for example 4 minutes.
  • the cleaning process described can with new ones Machine fillings are repeated until the capacity of the Filter insert 15 is exhausted.
  • the filter insert 15 will for this purpose preferably designed so that it has at least one Can filter daily solvent requirements.
  • Valves 5, 16 and 22 are flowed through. Valves 6, 13, 18 are to be closed here.
  • the position of the other valves depends on where the solvent used for backwashing the Filter insert 15 is obtained. If it is from the Cleaning container 7 is removed, valve 9 must be opened, if it is removed from the solvent tank 2 Open valve 4. Through the valve positions mentioned thus the direction of flow of the solvent in the filter housing 13 vice versa.
  • the space 29 filled above the overflow 24 in the sedimentation tank 23.
  • the space 29 is dimensioned so that a sufficient Amount of solvent can be added so that the Filter insert 15 is well cleaned.
  • the sedimentation vessel 23 is now over the height of the overflow 22 filled. Because of the sedimentation that for example, can take place over the course of a day a residue z. B. from impurities such as fat or the same contaminated adsorbent, for example Diatomaceous earth, in the lower area of the sedimentation vessel 23.
  • the supernatant 29 on the other hand consists of clarified and dirt-free solvent. After Sedimentation can be done by opening the valve 25 Overflow 22 protruding projection 29 in the Solvent circuit or in the solvent tank 2 be pumped out.
  • the schematically indicated state according to Fig. 1 shows the situation after pumping out cleaned supernatant 29 from the sedimentation vessel 23.
  • sediment 27 gradually increases until it the entire lower room up to the height of the overflow 24 in Fills inside the sedimentation vessel 23. A no closer shown sight glass or other monitoring measures can be provided to increase the height of the sediment 27 monitor. As soon as the sediment 27 reaches the height of the overflow 24 has reached, the sedimentation vessel 23 must be replaced by a new up to the level of the overflow 24 with clear solvent filled sedimentation vessel can be replaced. That with Sediment 27 filled sedimentation vessel 23 is then closed to dispose.
  • Fresh adsorbent can be at any point Solvent cycle on a regular basis either to be added manually or automatically. This can for example within a coarse filter, e.g. B. of Needle catcher 10 are made.
  • the volume of sedimentation vessel 23 to be provided is considerable smaller, for example 1/10 of the amount or volume, such as it when using a conventional spin filter would be the case.
  • the sedimentation vessel 23 be filled a lot more with sediment 27 because of the overflow 24 can be attached above.
  • the backwash process offers the possibility of a reliable and very often repeatable cleaning without having to do it manually must be intervened.
  • the filter housing 14 only needs Wear of the filter insert 15 in relatively large Maintenance intervals must be opened.
  • the filter insert 15 is preferably made up of one or more Metal sieves, because they are particularly resistant are and therefore have a longer life.
  • the surface of the filter insert 15 is advantageously the Flow rate of the solvent adjusted.
  • the Passage of the filter is preferably the grain size of the adapted adsorbent used.
  • a filter passage width of 200 .mu.m 10 ⁇ m to 50 ⁇ m can be provided. Other dimensions are easily conceivable, however.
  • Filter insert 15 can do the above, with any Backwashing process in the sedimentation vessel 23 volumes reduced to less than 10 l, for example less than 5 l become.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Liquids With Adsorbents In General (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Filtering Materials (AREA)
EP98117607A 1997-09-17 1998-09-17 Machine à nettoyer Withdrawn EP0903432A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1997140773 DE19740773A1 (de) 1997-09-17 1997-09-17 Reinigungsmaschine
DE19740773 1997-09-17

Publications (2)

Publication Number Publication Date
EP0903432A2 true EP0903432A2 (fr) 1999-03-24
EP0903432A3 EP0903432A3 (fr) 1999-07-28

Family

ID=7842563

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98117607A Withdrawn EP0903432A3 (fr) 1997-09-17 1998-09-17 Machine à nettoyer

Country Status (2)

Country Link
EP (1) EP0903432A3 (fr)
DE (1) DE19740773A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008053792B4 (de) 2008-10-21 2010-07-01 Evelyn Jost Verfahren zum Reinigen eines Filters sowie Filtervorrichtung zur Durchführung des Verfahrens

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1188557B (de) * 1959-07-17 1965-03-11 Paterson Engineering Company L Abstuetzkoerper eines Anschwemmfilterelementes fuer Druckrueckspuelung
SU1068464A1 (ru) * 1982-01-06 1984-01-23 Институт общей и неорганической химии АН АрмССР Способ очистки органических растворителей
DE3418836A1 (de) * 1984-05-07 1985-12-12 Multimatic Maschinen GmbH & Co, 4520 Melle Flusenfilter einer chemischreinigungsmaschine
DE3671261D1 (de) * 1985-02-14 1990-06-21 Walter Jost Reinigungsmaschine zum chemischen reinigen von gegenstaenden aus stoff.
FR2600680B1 (fr) * 1986-06-26 1988-12-23 Centre Tech Teinture Nettoyage Procede permettant de regenerer le solvant utilise sur les installations de nettoyage a sec d'articles textiles et installation de nettoyage mettant en oeuvre ce procede
JP2620662B2 (ja) * 1991-06-20 1997-06-18 三洋電機株式会社 ドライクリ−ナのフィルタ浄化方法
US5667683A (en) * 1992-06-17 1997-09-16 Benian Filter Company, Inc. Backwashable liquid filter system using rotating spray
DE9210109U1 (de) * 1992-07-28 1992-09-24 Multimatic Reinigungs-Systeme GmbH & Co, 4520 Melle Textilreinigungsmaschine
ATE171638T1 (de) * 1995-03-01 1998-10-15 Baumann Didda Maria Janina Verfahren und vorrichtung zur wiederaufbereitung eines verunreinigten lösemittels

Also Published As

Publication number Publication date
EP0903432A3 (fr) 1999-07-28
DE19740773A1 (de) 1999-03-18

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