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EP0509052B1 - Device for cleaning mechanical appliances, small parts and/or electronic switch units - Google Patents

Device for cleaning mechanical appliances, small parts and/or electronic switch units Download PDF

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Publication number
EP0509052B1
EP0509052B1 EP91903115A EP91903115A EP0509052B1 EP 0509052 B1 EP0509052 B1 EP 0509052B1 EP 91903115 A EP91903115 A EP 91903115A EP 91903115 A EP91903115 A EP 91903115A EP 0509052 B1 EP0509052 B1 EP 0509052B1
Authority
EP
European Patent Office
Prior art keywords
cleaning
turntable
substructure
arrangement
cleaning chamber
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.)
Expired - Lifetime
Application number
EP91903115A
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German (de)
French (fr)
Other versions
EP0509052A1 (en
Inventor
Rudolf Schmitz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henkel AG and Co KGaA
Original Assignee
Henkel AG and Co KGaA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Publication of EP0509052A1 publication Critical patent/EP0509052A1/en
Application granted granted Critical
Publication of EP0509052B1 publication Critical patent/EP0509052B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02Cleaning by the force of jets or sprays

Definitions

  • the invention relates to a device according to the preamble of patent claim 1.
  • both containers are known in which the machine parts to be cleaned are lowered into a washing liquid, as well as cleaning devices such as that of DE-GM 1 962 757, in which washing liquid is removed from a reservoir by means of a pump and sprayed onto the parts to be cleaned and then, collected by a drain, is fed back to the reservoir via filter devices.
  • cleaning devices such as that of DE-GM 1 962 757, in which washing liquid is removed from a reservoir by means of a pump and sprayed onto the parts to be cleaned and then, collected by a drain, is fed back to the reservoir via filter devices.
  • the cleaning effect is determined only by dissolving and softening them and is therefore inadequate, regeneration of the washing liquid is difficult, and due to the extensive filling of the washing chamber with a cleaning liquid there is an undesirably high weight.
  • the device according to DE-GM 1 962 757 has moderate dimensions and a lower weight, the open spraying of the cleaning liquid limits the intensity of the cleaning jets, and even when the liquid is sprayed with only low energy, both result an undesirable odor nuisance as well as a large amount of pollution of the surrounding area by ricocheting drops of liquid.
  • the often proposed ultrasonic cleaning results in high mechanical stresses for sensitive parts, which they are often not up to.
  • electronic components and type wheels of printing units react to ultrasonic cleaning processes due to hairline cracks and early failure.
  • the large amount of washing liquid required quickly becomes dirty and causes considerable procurement costs as well as difficulties in disposal.
  • DE-A-38 02 486, which defines the generic type, discloses a device for cleaning mechanical and / or electrical devices or devices by means of cleaning liquids, which, for example, dissolves greases and resins, but does not attack plastics and rubber.
  • This device consists of a cleaning chamber, which is vented by means of a blower with its suction opening upstream, has a closable loading opening and a drainage underpinning cleaning liquid for its regeneration, in which the cleaning chamber is arranged above a cuboid, closed substructure, and in which the delivery nozzle of the blower is connected to the base areas of the substructure by means of a line, while an aeration line leading into the cleaning chamber and a ventilation line open into the upper areas thereof.
  • This device is characterized in that the blower conveys the extracted air into a compensation chamber arranged in the substructure, to which a collecting space is connected via impingement filters formed from wires, which has an outlet for the blown air to be returned and with one provided for this by a Shield plate is delimited hood, which has the connection for the ventilation line closed with an activated carbon filter.
  • This compact arrangement can be made portable and it does not require any permanently installed exhaust air ducts.
  • the present invention is accordingly based on the object to provide an arrangement of the type referred to, in which the operating personnel is relieved and at the same time the respective location can be selected without problems by improved regeneration of the cleaning agent in connection with a restriction on the towing thereof.
  • the present invention thus relates to a device for cleaning mechanical and / or electrical devices or devices by means of cleaning liquids, with a baffle plate, which is vented by means of a blower with its suction opening and has a closable loading opening, and a drainage underpinning cleaning liquid for its regeneration, in which the cleaning chamber is arranged above a cuboid, closed substructure, and in which the delivery nozzle of the blower is connected to the bottom region of the substructure by means of a line, the blower conveying the extracted air into a compensation chamber arranged in the substructure, to which the air flows out a collection chamber, in which a ventilation duct leading into the cleaning chamber and a vent are connected to a number of stacked impingement filters formed from wire mesh filter mats outlet line, and with a rotary plate arranged in the cleaning chamber and receiving the items to be cleaned, characterized, that the cleaning chamber (3) has at least one riser pipe (55) which is supplied with cleaning liquid via a pump (58) and is provided with spray nozzles (5
  • the separation of the cleaning agent contained in the exhaust air is also improved by the structure of the downstream filter.
  • a base 2 On permanently mounted or rotatable or swiveling and advantageously also lockable castors 1, a base 2 is provided which carries a cleaning chamber 3, the loading opening of which is closed by a door 4, which can be folded up by means of hinges 5 and placed on rubber buffer 6 is.
  • the cover plate of the cleaning chamber is equipped with a viewing window 7, for example made of acrylic glass, just as the door 4 is closed by a front window 8, which has an opening 9 for inserting and engaging the cleaning guns.
  • a perforated turntable 12 is supported on an axle pin 10 in the cleaning chamber, supported by a thrust bearing 11, for setting up the items to be cleaned, and can be locked by means of a locking device (not shown). This can brake the turntable or its hub by friction or engage in locking holes in the same.
  • the cleaning chamber is closed by an impact filter 13, which is removable and consists of at least two packages of slotted disks connected to one another.
  • a manifold 14 is used to extract exhaust air and, via the floor 15 of the cleaning chamber 3, which is slightly sloping towards the door 4, can be sprayed on and, if necessary, dripping from the impact filter 13, to run liquid into a filter housing 16, which is also designed as a slotted disc Filter plate 17 is equipped, but can also be designed as a narrow line filter, for example. With a mesh size of 1.20 mm.
  • the bottom 18 of the filter housing rises slightly to the side and has two openings 19 in the center.
  • Linear guides 20 are provided on the underside of the filter housing 16, in which a filter attachment 21 is provided, which can be pulled out by means of a button, which is expediently shown in the illustrated by means of a not shown locking device Operating position is fixed.
  • the filter attachment 21 has, in each case below the openings 19, two support cones 22, in each of which paper filters 23 are inserted; For reasons of problem-free and inexpensive procurement, customary coffee filters can be used here, which ensure excellent regeneration of the cleaning liquid and in double parallel Arrangement can also grow stronger liquid flows.
  • a normally open drain valve 24 is arranged in the bottom of the filter attachment 21, via which the regenerated cleaning liquid is returned by means of the hose 25 into a container 26 applied to the standing surface 27.
  • the spray gun (not shown) used for cleaning can be operated from the same container.
  • a collecting space 34 in which the air quantities passing through the filter mats 33 with a relatively low flow velocity and over a large area are collected and further cleaned by droplets dropping out.
  • the liquid residues that precipitate here also fall down into the filter mats 33 and with the cleaning liquid collected by them into the sump of the compensation chamber 31, from which the liquid present there can be withdrawn periodically, for example weekly or monthly, via a drain valve 35.
  • a small rotor pump similar to that of a windshield washer system of a motor vehicle, to also periodically pump the liquid present over the Pump floor 15 so that this portion of the cleaning liquid can also be cleaned in the filters 17 and 23, the container 26 can be supplied.
  • an exhaust space 36 is partitioned off by means of a shield plate 37.
  • the air which has been calmed even further here and cleaned by precipitation, can escape via the overpressure in the collecting space 34 via the elbow 38, the exhaust hose 40 connected to its flange 39 and an activated carbon filter 41.
  • the exhaust air in front of the activated carbon filter is cleaned even more extensively, so that its efficiency increases as well as its service life. Due to the gap formed in front of the screen 37 and the flow resistance of the activated carbon filter, the air flow passing through it remains low.
  • the major portion of the air sucked in by the blower 30 is returned via two elbows 43, two return hoses 44 and two guide sleeves 45 into the cleaning chamber and, by means of return nozzles 46 which are rotatable and height-adjustable in the guide sleeves 45, is expediently directed at the pre-cleaned workpiece at least after cleaning has been completed , so that a quick drying of the same is achieved.
  • Both the compressed air and the spray gun can be supplied with compressed air via a predefined compressed air network, by storage or by a compressor, which can be set up remotely from the device, if necessary.
  • the connection is made via a fitting, which, however, is expediently not arranged on the rear, as shown, but on a flank of the arrangement is, and expediently that edge which lies opposite the maintenance flap 47.
  • This maintenance flap can be pivoted, but it is also possible to fasten it with screws.
  • it can optionally be connected to the frame 32 if it is held so as to be extendable via a linear guide.
  • the compressed air fitting is designed as a water separator 48, which is equipped with a pressure reducing valve 49 and a shut-off valve 50 and expediently also has a pressure gauge (not shown) or is connected to it.
  • the water separator 48 is provided with two connections 51 and 52 in order to be able to connect both a compressed air gun and a spray gun.
  • the separator housing 53 is expediently provided with a filter. Paper filters can also be used here; Cotton filters, for example, have proven useful, e.g. can be introduced in the form of a tampon and bring about the necessary cleaning of the compressed air.
  • the connecting cord for the electrical connection can be provided at the free end with a conventional Schuko plug and connected in the connection box 54, which can also be equipped with a power switch, if the latter is not provided for better accessibility on the sides or the front of the arrangement.
  • riser tubes 55 are provided on both sides of the turntable in the cleaning chamber, which end in a spray nozzle 56 and which are preferably provided in the region of a surface line with further spray nozzles directed towards the turntable.
  • These spray nozzles can be inserted, pressed in or screwed in, but they can also be used as directed bores be executed.
  • a slowly rotating drive device 57 which can consist of an electric gear motor arranged behind the cleaning chamber, a connecting shaft and an angular gear, it is achieved that practically all surface areas applied to the turntable can also be reached by the cleaning agent jets are.
  • the riser pipes 55 are fed by a water pump 58 and a valve 59 arranged downstream thereof, the suction connection of the water pump 58 being guided into one of the containers 26.
  • the automatic mode of operation can be set on the switch box 60, which has a plurality of setting elements, by means of which the time of the spraying, ie the effectiveness of the water pump 58, and that of the drying via the return nozzles 46 can be set, and by means of which the speed of the drive device is also expedient 57 of the turntable 12 is determined.
  • a limit switch 61 is also advantageously provided, which detects the opening of the door 4 of the cleaning chamber 3, for example via an angle lever connected to the hinge, and at least prevents spraying operations after a short opening stroke and also expediently interrupts the air circulation in order to prevent the release of cleaning agents Prevent air from the open cleaning chamber. It was also considered expedient to design one of the rollers 62 as a switchable brake roller in order to achieve a defined state of the arrangement. the work is facilitated by a lamp 63 provided above the cleaning chamber 3 and illuminating it through the viewing window 7. In a tube connected to the rear of the cleaning chamber, a telescopic boom 64 is arranged that can be pulled out and adjusted in height, which allows the desired height of the activated carbon filter to be set 41 set.
  • the work is further facilitated and inadvertent falling of the cleaning goods is prevented if the turntable 12 is equipped with a rim 65 surrounding it.
  • the grip and thus the stability of the items to be cleaned is further improved if the turntable 12 is designed as a wire basket.
  • the objects to be cleaned are applied to the turntable 12 which is perforated or made of wire mesh; if necessary, this can be done, for example in the case of printed circuit boards, by means of special holding devices adapted to them.
  • the door is pivoted back into the working position shown, and a compressed air gun 67 can first be inserted through the opening 9 of relatively small cross-section in order to blow loose dirt and dirt off the objects to be cleaned.
  • the water pump 58 is then switched on in order to effect a first cleaning of the items to be cleaned.
  • the required soaking is achieved with a certain service life, and then the items to be cleaned are sprayed in again by means of the spray liquid, the detached contamination components, such as partially resinified oils, being sprayed off after soaking.
  • the turntable 12 with the items to be cleaned is rotated continuously, so that the jets of the spray nozzles 56 reach them from all sides.
  • a final overmolding ensures the desired cleanliness.
  • Superficial drying can first be achieved by using the compressed air gun 67 again, by means of which still adhering parts and dripping cleaning liquid can be blown off. An even longer stay in the cleaning chamber with the blower working allows complete drying, although even with electronic devices the low conductivity of the cleaning fluid used does not necessarily require complete drying.
  • the opening 9 is designed such that, on the one hand, a practically undisturbed working with the compressed air and the spray gun is possible, but on the other hand not too much external air enters .
  • the low vacuum that occurs in the cleaning chamber 3 is used to prevent any escape of droplets or vapors of the cleaning agent to the outside: Through the opening 9, a small air flow will always flow into the cleaning chamber and thus the air already in it in the direction press back on the impact filter 13 and the manifold 14.
  • This inflowing air must be separated again when the air circuit is formed: the amount of air separated is determined here by the pressure in the collecting space 34 in connection with the resistance given by the activated carbon filter 41.
  • This air to be discharged is initially covered by the shield plate 37 against the actual collecting space 34, so that 40 further separation processes can occur in the exhaust space and in the exhaust hose 38 connected to the elbow 38.
  • the final cleaning of the air to be separated from the circuit is effected by the activated carbon filter 41. In many cases, however, adequate exhaust air purification is achieved when the activated carbon filter 41 is connected directly to the manifold 38.
  • the air exiting into the installation space is so largely cleaned that it can neither appear to be harmful to health nor be perceptible at all, for example by the sense of smell.
  • Due to the extensive regeneration it is no longer necessary to use two different liquids, namely new and, to initiate cleaning and for softening, already used but regenerated liquid.
  • the number of containers required can therefore be reduced to one, so that this also increases the mobility of the arrangement.
  • the extensive regeneration also ensures an extremely long lifespan of the cleaning liquid introduced into the circuit, which remains practically usable for a very long time and therefore hardly causes disposal problems.
  • the halogen-free cleaning liquid intended for this arrangement and containing neither chlorinated nor fluorinated hydrocarbons both through their composition as well as through the minimal amounts of the discharged liquid the disposal problems are reduced to a minimum.

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  • Cleaning By Liquid Or Steam (AREA)

Abstract

A device for cleaning mechanical appliances, small parts and/or electronic switch units using cleaning liquids comprises a cleaning chamber, which is ventilated by means of a fan with a baffle plate arranged in front of its intake opening and which has a closable charging opening, and a discharge below the cleaning chamber which collects the cleaning liquid to be regenerated. The cleaning chamber is mounted above a square, closed substructure. The delivery connection piece of the fan is connected by a pipeline to the base region of the substructure. A ventilation pipeline leading into the cleaning chamber and an evacuation pipeline open into the upper region of the substructure. A rotary table in the cleaning chamber holds the objects to be cleaned. The cleaning chamber (3) has at least one rising pipe (55) which is supplied with cleaning liquid by a pump (58) and which has spray nozzles (56) directed toward the rotary table (12).

Description

Die Erfindung betrifft eine Vorrichtung nach der Gattung des Patentansprüches 1.The invention relates to a device according to the preamble of patent claim 1.

Zum Reinigen von Maschinenteilen sind sowohl Behälter bekannt, in welche die zu reinigenden Maschinenteile in eine Waschflüssigkeit abgesenkt werden, als auch Reinigungsgeräte wie das des DE-GM 1 962 757, bei dem Waschflüssigkeit mittels einer Pumpe einem Reservoir entnommen und auf die zu reinigenden Teile gespritzt wird und dann, von einem Ablauf gesammelt, über Filtervorrichtungen dem Reservoir wieder zugeführt wird. Bei der ersten dieser Reinigungsvorrichtungen ist der Reinigungseffekt nur durch Anlösen und Aufweichen bestimmt und damit ungenügend, eine Regenerierung der Waschflüssigkeit ist nur schwer möglich, und infolge der weitgehenden Füllung der Waschkammer mit einer Reinigungsflüssigkeit ergibt sich ein unerwünscht hohes Gewicht. Die Vorrichtung nach dem DE-GM 1 962 757 verfügt zwar über mäßige Abmessungen und ein geringeres Gewicht, das offene Versprühen der Reinigungsflüssigkeit jedoch begrenzt die Intensität der Reinigungsstrahlen, und auch bei mit nur geringer Energie abgesprühter Flüssigkeit ergeben sich sowohl eine unerwünschte Geruchsbelästigung als auch durch abprallende Flüssigkeitstropfen eine erhebliche Verschmutzung des Umkreises.For cleaning machine parts, both containers are known in which the machine parts to be cleaned are lowered into a washing liquid, as well as cleaning devices such as that of DE-GM 1 962 757, in which washing liquid is removed from a reservoir by means of a pump and sprayed onto the parts to be cleaned and then, collected by a drain, is fed back to the reservoir via filter devices. In the first of these cleaning devices, the cleaning effect is determined only by dissolving and softening them and is therefore inadequate, regeneration of the washing liquid is difficult, and due to the extensive filling of the washing chamber with a cleaning liquid there is an undesirably high weight. Although the device according to DE-GM 1 962 757 has moderate dimensions and a lower weight, the open spraying of the cleaning liquid limits the intensity of the cleaning jets, and even when the liquid is sprayed with only low energy, both result an undesirable odor nuisance as well as a large amount of pollution of the surrounding area by ricocheting drops of liquid.

Bei der vielfach vorgeschlagenen Ultraschallreinigung ergeben sich für empfindliche Teile hohe mechanische Beanspruchungen, denen diese oft nicht gewachsen sind. So reagieren elektronische Bauelemente und Typenräder von Druckwerken auf Ultraschall einsetzende Reinigungsverfahren durch Haarrisse und frühen Ausfall.Die in erheblicher Menge erforderliche Waschflüssigkeit verschmutzt schnell und bedingt sowohl erhebliche Beschaffungskosten als auch Entsorgungsschwierigkeiten.The often proposed ultrasonic cleaning results in high mechanical stresses for sensitive parts, which they are often not up to. For example, electronic components and type wheels of printing units react to ultrasonic cleaning processes due to hairline cracks and early failure. The large amount of washing liquid required quickly becomes dirty and causes considerable procurement costs as well as difficulties in disposal.

Aus der die Gattung bestimmenden DE-A-38 02 486 ist eine Vorrichtung zum Reinigen von mechanischen und/oder elektrischen Geräten oder Vorrichtungen vermittels von Reinigungsflüssigkeiten, welche beispielsweise Fette und Harze löst, Kunststoffe und Gummi jedoch nicht angreift, bekannt. Diese Vorrichtung besteht aus einer mittels eines Gebläses mit dessen Saugöffnung vorgeordneter Prallplatte entlüfteten, eine verschließbare Beschickungsöffnung aufweisenden Reinigungskammer und einem diese unterfangenden, Reinigungsflüssigkeit zu deren Regenerierung auffangenden Ablauf, bei der die Reinigungskammer über einem quaderförmigen, geschlossenen Unterbau angeordnet ist, und bei welcher der Förderstutzen des Gebläses mittels einer Leitung mit dem Bodenbereiche des Unterbaues verbunden ist, während in dessen oberem Bereiche eine in die Reinigungskammer führende Belüftungsleitung sowie eine Entlüftungsleitung münden. Diese Vorrichtung ist dadurch gekennzeichnet, daß das Gebläse die abgesaugte Luft in eine im Unterbau angeordnete Ausgleichskammer fördert, an die sich über aus Drähten gebildete Prallfilter ein Sammelraum anschließt, der mit einem Auslaß für die rückzuführende Gebläseluft und mit einem von diesem entfernt vorgesehenen, durch ein Schirmblech abgegrenzten Abzugsraum ausgestattet ist, welche den Anschluß für die mit einem Aktivkohlefilter abgeschlossenen Entlüftungsleitung aufweist. Diese kompakte Anordnung läßt sich transportabel gestalten, und sie benötigt keine fest installierten Abluftleitungen.DE-A-38 02 486, which defines the generic type, discloses a device for cleaning mechanical and / or electrical devices or devices by means of cleaning liquids, which, for example, dissolves greases and resins, but does not attack plastics and rubber. This device consists of a cleaning chamber, which is vented by means of a blower with its suction opening upstream, has a closable loading opening and a drainage underpinning cleaning liquid for its regeneration, in which the cleaning chamber is arranged above a cuboid, closed substructure, and in which the delivery nozzle of the blower is connected to the base areas of the substructure by means of a line, while an aeration line leading into the cleaning chamber and a ventilation line open into the upper areas thereof. This device is characterized in that the blower conveys the extracted air into a compensation chamber arranged in the substructure, to which a collecting space is connected via impingement filters formed from wires, which has an outlet for the blown air to be returned and with one provided for this by a Shield plate is delimited hood, which has the connection for the ventilation line closed with an activated carbon filter. This compact arrangement can be made portable and it does not require any permanently installed exhaust air ducts.

Es besteht jedoch der Wunsch, den Reinigungsprozeß zu vereinfachen und Arbeitskräfte zu entlasten. Des weiteren hat es sich gezeigt, daß in einer Anzahl von Fällen der mobile, problemlose Einsatz durch eine nur ungenügende Regenerierung der aufgefangenen Reinigungsflüssigkeit, welche zusätzlich den Einsatz frischer Reinigungsflüssigkeit bedingte, gefährdet wurde, und andererseits auch das Arbeiten in geschlossenen Räumen nicht immer völlig problemlos war.However, there is a desire to simplify the cleaning process and relieve workers. Furthermore, it has been shown that in a number of cases the mobile, problem-free use was jeopardized by inadequate regeneration of the collected cleaning liquid, which also required the use of fresh cleaning liquid, and on the other hand working in closed rooms was not always completely problem-free was.

Die vorliegende Erfindung geht dementsprechend von der Aufgabe aus, eine Anordnung der bezeichneten Gattung zu schaffen, bei der das Bedienungspersonal entlastet wird und gleichzeitig auch der jeweilige Standort durch verbesserte Regenerierung des Reinigungsmittels in Verbindung mit einer Beschränkung des Ausschleppens desselben problemlos wählbar wird.The present invention is accordingly based on the object to provide an arrangement of the type referred to, in which the operating personnel is relieved and at the same time the respective location can be selected without problems by improved regeneration of the cleaning agent in connection with a restriction on the towing thereof.

Die vorliegende Erfindung betrifft somit eine Vorrichtung zum Reinigen von mechanischen und/oder elektrischen Geräten oder Vorrichtungen vermittels von Reinigungflüssigkeiten mit einer mittels eines Gebläses mit dessen Saugöffnung vorgeordneter Prallplatte entlüfteten, eine verschließbare Beschickungsöffnung aufweisenden Reinigungskammer und einem diese unterfangenden, Reinigungsflüssigkeit zu deren Regenerierung auffangenden Ablauf, bei der die Reinigungskammer über einem quaderförmigen, geschlossenen Unterbau angeordnet ist, und bei welcher der Förderstutzen des Gebläses mittels einer Leitung mit dem Bodenbereich des Unterbaues verbunden ist, wobei das Gebläse die abgesaugte Luft in eine im Unterbau angeordnete Ausgleichskammer fördert, an die sich über aus einer Anzahl von aufeinandergeschichteten, aus Draht gewirkten Filtermatten gebildete Prallfilter ein Sammelraum anschließt, in welchen eine in die Reinigungskammer führende Belüftungsleitung sowie eine Entlüftungsleitung münden, und mit einem in der Reinigungskammer angeordneten, das Reinigungsgut aufnehmenden Drehteller,
dadurch gekennzeichnet,
daß die Reinigungskammer (3) mindestens ein über eine Pumpe (58) mit Reinigungsflüssigkeit gespeistes Steigerohr (55) aufweist, das mit auf den Drehteller (12) gerichteten Spritzdüsen (56) versehen ist, und daß der Rahmen (32) fünf aus einem Metalldraht mit einer Stärke von 0,3 bis 0,6 mm gewirkte Filtermatten (33) mit einer Maschenweite von 6 bis 12 mm aufweist.
The present invention thus relates to a device for cleaning mechanical and / or electrical devices or devices by means of cleaning liquids, with a baffle plate, which is vented by means of a blower with its suction opening and has a closable loading opening, and a drainage underpinning cleaning liquid for its regeneration, in which the cleaning chamber is arranged above a cuboid, closed substructure, and in which the delivery nozzle of the blower is connected to the bottom region of the substructure by means of a line, the blower conveying the extracted air into a compensation chamber arranged in the substructure, to which the air flows out a collection chamber, in which a ventilation duct leading into the cleaning chamber and a vent are connected to a number of stacked impingement filters formed from wire mesh filter mats outlet line, and with a rotary plate arranged in the cleaning chamber and receiving the items to be cleaned,
characterized,
that the cleaning chamber (3) has at least one riser pipe (55) which is supplied with cleaning liquid via a pump (58) and is provided with spray nozzles (56) directed onto the rotary plate (12), and that the frame (32) has five made of a metal wire has filter mats (33) knitted with a thickness of 0.3 to 0.6 mm and a mesh size of 6 to 12 mm.

Mit Hilfe der erfindungsgemäßen Vorrichtung ist es möglich, den eigentlichen Reinigungsprozeß nach Beschicken des Drehtellers selbsttätig durchzuführen. Andererseits besteht aber auch die Möglichkeit, in kritischen Fällen die Reinigung, wie bisher, manuell durchzuführen, und ebenso besteht die Möglichkeit, während der selbsttätig durchgeführten Besprühung kritische Stellen zusätzlich mit einer manuell bedienbaren Sprühpistole zusätzlich zu reinigen. Vorteilhaft macht es sich auch bemerkbar, daß nunmehr das Einspritzen mittels einer Wasserpumpe bestimmt wird, deren Arbeitsweisegegebenenfalls einstellbar ist, und daß Druckluft nurmehr beim direkten Einsatz der manuell zu bedienenden Reinigungsmittel-Pistolen erforderlich wird.With the help of the device according to the invention it is possible to do the actual Carry out cleaning process automatically after loading the turntable. On the other hand, there is also the possibility, in critical cases, to carry out the cleaning manually, as before, and there is also the possibility of additionally cleaning critical areas with a manually operated spray gun during the spraying which is carried out automatically. It is also advantageous that the injection is now determined by means of a water pump, the mode of operation of which may be adjustable, and that compressed air is only required when the manually operated cleaning agent guns are used directly.

Aber auch die Abscheidung des in der Abluft enthaltenen Reinigungsmittels wird durch den Aufbau des nachgeordneten Filters verbessert.The separation of the cleaning agent contained in the exhaust air is also improved by the structure of the downstream filter.

Im einzelnen sind die Merkmale der Neuerung anhand der folgenden Beschreibung von Ausführungsbeispielen in Verbindung mit diese darstellenden Zeichnungen erläutert. Es zeigen hierbei:

Figur 1
einen Längsschnitt durch die Anordnung, und
Figur 2
eine teilweise aufgebrochene Frontansicht.
The features of the innovation are explained in detail on the basis of the following description of exemplary embodiments in conjunction with these drawings. They show:
Figure 1
a longitudinal section through the arrangement, and
Figure 2
a partially broken front view.

Auf fest gelagerten oder dreh- bzw. schwenkbaren und mit Vorteil auch sperrbaren Laufrollen 1 ist ein Unterbau 2 vorgesehen, der eine Reinigungskammer 3 trägt, deren Beschickungsöffnung durch eine Tür 4 abgeschlossen ist, die vermittels von Scharnieren 5 nach oben wegklappbar und auf Gummipuffer 6 auflegbar ist. Um den Reinigungsvorgang besser beobachten zu können, ist die Deckplatte der Reinigungskammer mit einer Sichtscheibe 7 bspw. aus Acrylglas ausgestattet, so wie auch die Tür 4 durch eine Frontscheibe 8 geschlossen ist, die eine Öffnung 9 zum Einführen und Eingreifen der Reinigungspistolen aufweist.On permanently mounted or rotatable or swiveling and advantageously also lockable castors 1, a base 2 is provided which carries a cleaning chamber 3, the loading opening of which is closed by a door 4, which can be folded up by means of hinges 5 and placed on rubber buffer 6 is. To better watch the cleaning process To be able to, the cover plate of the cleaning chamber is equipped with a viewing window 7, for example made of acrylic glass, just as the door 4 is closed by a front window 8, which has an opening 9 for inserting and engaging the cleaning guns.

Auf einem Achsbolzen 10 ist in der Reinigungskammer, über ein Drucklager 11 abgestützt, zum Aufstellen des Reinigungsgutes ein perforierter Drehteller 12 gelagert, der mittels einer nicht dargestellten Arretierungsvorrichtung feststellbar ist. Diese kann durch Friktion den Drehteller oder dessen Nabe bremsen oder arretierend in Löcher derselben eingreifen. Rückwärtig ist die Reinigungskammer durch einen Prallfilter 13 abgeschlossen, der abnehmbar ist und aus mindestens zwei Paketen miteinander verbundener Schlitzscheiben besteht. Ein Krümmer 14 dient dem Absaugen von Abluft, und über den in Richtung auf die Tür 4 leicht abfallenden Boden 15 der Reinigungskammer 3 vermag aufgespritzte und, gegebenenfalls vom Prallfilter 13, abtropfende Flüssigkeit in ein Filtergehäuse 16 zu laufen, das mit einer ebenfalls als Schlitzscheibe ausgebildeten Filterplatte 17 ausgestattet ist, aber auch als enges Netzfilter, bspw. mit einer Maschenweite von 1,20 mm ausgebildet sein kann. Der Boden 18 des Filtergehäuses steigt seitlich geringfügig an und verfügt mittig über zwei Öffnungen 19. An der Unterseite des Filtergehäuses 16 sind Linearführungen 20 vorgesehen, in denen ein Filteransatz 21 vermittels eines Knopfes ausziehbar vorgesehen ist, der mittels einer nicht dargestellten Rastvorrichtung zweckmäßig in der dargestellten Betriebsstellung festgelegt ist. Der Filteransatz 21 weist, jeweils unterhalb der Öffnungen 19, zwei Stützkonen 22 auf, in die jeweils Papierfilter 23 eingelegt sind; aus Gründen der problemlosen und preiswerten Beschaffung können hier übliche Kaffeefilter eingesetzt werden, die eine ausgezeichnete Regenerierung der Reinigungsflüssigkeit sichern und in zweifach-paralleler Anordnung auch stärkeren anfallenden Flüssigkeitsströmen gewachsen sind. Im Boden des Filteransatzes 21 ist ein normalerweise geöffnetes Ablaßventil 24 angeordnet, über das vermittels des Schlauches 25 die regenerierte Reinigungsflüssigkeit in einen auf die Stellfläche 27 aufgebrachten Behälter 26 rückgeleitet wird. Aus dem gleichen Behälter kann die zur Reinigung verwendete, nicht dargestellte Spritzpistole betrieben werden.A perforated turntable 12 is supported on an axle pin 10 in the cleaning chamber, supported by a thrust bearing 11, for setting up the items to be cleaned, and can be locked by means of a locking device (not shown). This can brake the turntable or its hub by friction or engage in locking holes in the same. At the rear, the cleaning chamber is closed by an impact filter 13, which is removable and consists of at least two packages of slotted disks connected to one another. A manifold 14 is used to extract exhaust air and, via the floor 15 of the cleaning chamber 3, which is slightly sloping towards the door 4, can be sprayed on and, if necessary, dripping from the impact filter 13, to run liquid into a filter housing 16, which is also designed as a slotted disc Filter plate 17 is equipped, but can also be designed as a narrow line filter, for example. With a mesh size of 1.20 mm. The bottom 18 of the filter housing rises slightly to the side and has two openings 19 in the center. Linear guides 20 are provided on the underside of the filter housing 16, in which a filter attachment 21 is provided, which can be pulled out by means of a button, which is expediently shown in the illustrated by means of a not shown locking device Operating position is fixed. The filter attachment 21 has, in each case below the openings 19, two support cones 22, in each of which paper filters 23 are inserted; For reasons of problem-free and inexpensive procurement, customary coffee filters can be used here, which ensure excellent regeneration of the cleaning liquid and in double parallel Arrangement can also grow stronger liquid flows. A normally open drain valve 24 is arranged in the bottom of the filter attachment 21, via which the regenerated cleaning liquid is returned by means of the hose 25 into a container 26 applied to the standing surface 27. The spray gun (not shown) used for cleaning can be operated from the same container.

Während des Betriebes wird über den Krümmer 14 und den an diesen angeschlossenen Absaugschlauch durch ein vermittels eines Elektromotors 29 betriebenes Gebläse 30 Abluft abgesaugt, die in die im unteren Teil des Unterbaues 2 angeordnete Ausgleichskammer 31 eingeblasen wird und sich hier zu beruhigen vermag, wobei gleichzeitig grobe, mittlere und auch schon feine Tröpfchen des Reinigungsmittels aus zufallen vermögen und im Unterteil der Ausgleichskammer 31 einen Sumpf bilden. Auf einem sich über den gesamten Querschnitt des Unterbaues 2 erstreckenden Rahmen 32 ist eine Anzahl von Filtermatten 33 vorgesehen, die aus Metalldraht gewirkt sind und infolge ihrer starken Packung ein dichtmaschiges Prallfilter bilden. Über den Filtermatten 33 steht ein Sammelraum 34 an, in dem die mit relativ geringer Strömungsgeschwindigkeit und großflächig die Filtermatten 33 durchsetzenden Luftmengen gesammelt und durch weiteres Ausfallen von Tröpfchen noch weiter gereinigt werden. Auch die hier ausfallenden Flüssigkeitsreste fallen nach unten in die Filtermatten 33 aus und mit der von diesen aufgefangenen Reinigungsflüssigkeit in den Sumpf der Ausgleichskammer 31, aus dem die dort anstehende Flüssigkeit periodisch, bspw. wöchentlich oder monatlich, über ein Ablaßventil 35 abgezogen werden kann. Es ist auch möglich, mittels einer kleinen Rotorpumpe, ähnlich der einer Scheibenwaschanlage eines Kraftfahrzeuges, die anstehende Flüssigkeit, ebenfalls periodisch, über den Boden 15 zu pumpen, so daß dieser Anteil der Reinigungsflüssigkeit ebenfalls in den Filtern 17 und 23 gereinigt dem Behälter 26 zuführbar ist.During operation, exhaust air is sucked out through the manifold 14 and the suction hose connected to it by a fan 30 operated by means of an electric motor 29, which is blown into the compensation chamber 31 arranged in the lower part of the substructure 2 and is able to calm down here, at the same time being coarse , medium and already fine droplets of the cleaning agent can fall out and form a sump in the lower part of the compensation chamber 31. On a frame 32 which extends over the entire cross section of the substructure 2, a number of filter mats 33 are provided, which are knitted from metal wire and form a tight-meshed impact filter due to their strong packing. Above the filter mats 33 there is a collecting space 34, in which the air quantities passing through the filter mats 33 with a relatively low flow velocity and over a large area are collected and further cleaned by droplets dropping out. The liquid residues that precipitate here also fall down into the filter mats 33 and with the cleaning liquid collected by them into the sump of the compensation chamber 31, from which the liquid present there can be withdrawn periodically, for example weekly or monthly, via a drain valve 35. It is also possible, by means of a small rotor pump, similar to that of a windshield washer system of a motor vehicle, to also periodically pump the liquid present over the Pump floor 15 so that this portion of the cleaning liquid can also be cleaned in the filters 17 and 23, the container 26 can be supplied.

In dem Sammelraum 34 ist ein Abzugraum 36 mittels eines Schirmbleches 37 abgeteilt. Die hier noch weiter beruhigte und durch Ausfallen gereinigte Luft kann über den im Sammelraum 34 bewirkten Überdruck über den Krümmer 38, den an dessen Flansch 39 angeschlossenen Abluftschlauch 40 und ein Aktivkohlefilter 41 entweichen. Bei entsprechender Länge des bspw. 1 bis 4 m langen Abluftschlauches und bei zweckmäßig etwas erhöhter Aufhängung des Aktivkohlefilters 41 vermittels eines Bügels 42 wird eine noch weitgehendere Reinigung der Abluft vor dem Aktivkohlefilter bewirkt, so daß dessen Wirkungsgrad ebenso steigt wie seine Standzeit. Durch den beim Eintritt vor dem Schirm 37 gebildeten Spalt und den Durchflußwiderstand des Aktivkohlefilters bleibt der diesen durchsetzende Luftstrom gering. Der wesentliche Anteil der mittels des Gebläses 30 angesaugten Luft wird über zwei Krümmer 43, zwei Rücklaufschläuche 44 und zwei Führungsmuffen 45 in die Reinigungskammer rückgeführt und vermittels von in den Führungsmuffen 45 drehbaren und höheneinstellbaren Rücklaufdüsen 46 zweckmäßig mindestens nach Abschluß der Reinigung auf das vorgereinigte Werkstück gerichtet, so daß ein schnelles Trocknen desselben erreicht wird.In the collecting space 34, an exhaust space 36 is partitioned off by means of a shield plate 37. The air, which has been calmed even further here and cleaned by precipitation, can escape via the overpressure in the collecting space 34 via the elbow 38, the exhaust hose 40 connected to its flange 39 and an activated carbon filter 41. Given a corresponding length of the exhaust hose, for example 1 to 4 m long, and if the activated carbon filter 41 is expediently somewhat higher, by means of a bracket 42, the exhaust air in front of the activated carbon filter is cleaned even more extensively, so that its efficiency increases as well as its service life. Due to the gap formed in front of the screen 37 and the flow resistance of the activated carbon filter, the air flow passing through it remains low. The major portion of the air sucked in by the blower 30 is returned via two elbows 43, two return hoses 44 and two guide sleeves 45 into the cleaning chamber and, by means of return nozzles 46 which are rotatable and height-adjustable in the guide sleeves 45, is expediently directed at the pre-cleaned workpiece at least after cleaning has been completed , so that a quick drying of the same is achieved.

Die eigentliche Reinigung erfolgt vermittels Preßluft- und vermittels Sprühpistolen, die in der Figur nicht dargestellt sind. Die Druckluftversorgung sowohl der Druckluft- als auch der Sprühpistole kann über ein vorgegebenes Druckluftnetz, durch Speicher oder durch einen Kompressor erfolgen, der gegebenenfalls entfernt von der Vorrichtung aufstellbar ist. Im Ausführungsbeispiel erfolgt der Anschluß über eine Armatur, die zweckmäßig allerdings nicht, wie dargestellt, auf der Rückseite, sondern auf einer Flanke der Anordnung angeordnet ist, und zwar zweckmäßig derjenigen Flanke, welche der Wartungsklappe 47 gegenüberliegt. Diese Wartungsklappe kann schwenkbar vorgesehen sein, es ist aber auch möglich, sie durch Schrauben zu befestigen. Des weiteren kann sie gegebenenfalls mit dem Rahmen 32 verbunden sein, wenn dieser über eine Linearführung ausfahrbar gehalten ist.The actual cleaning takes place by means of compressed air and spray guns, which are not shown in the figure. Both the compressed air and the spray gun can be supplied with compressed air via a predefined compressed air network, by storage or by a compressor, which can be set up remotely from the device, if necessary. In the exemplary embodiment, the connection is made via a fitting, which, however, is expediently not arranged on the rear, as shown, but on a flank of the arrangement is, and expediently that edge which lies opposite the maintenance flap 47. This maintenance flap can be pivoted, but it is also possible to fasten it with screws. Furthermore, it can optionally be connected to the frame 32 if it is held so as to be extendable via a linear guide.

Im Ausführungsbeispiel ist die Druckluftarmatur als Wasserabscheider 48 ausgebildet, der mit einem Druckminderventil 49 sowie einem Absperrventil 50 ausgestattet ist und zweckmäßig auch noch ein nicht dargestelltes Manometer aufweist oder mit ihm verbunden ist. Der Wasserabscheider 48 ist mit zwei Anschlüssen 51 und 52 versehen, um sowohl eine Druckluftpistole als auch eine Sprühpistole anschließen zu können. Das Abscheidergehäuse 53 ist zweckmäßig mit einem Filter versehen. Auch hier können Papierfilter verwendet werden; als zweckmäßig haben sich aber bspw. Wattefilter bewährt, die z.B. in Form eines Tampons eingebracht werden können und die erforderliche Reinigung der Druckluft bewirken.In the exemplary embodiment, the compressed air fitting is designed as a water separator 48, which is equipped with a pressure reducing valve 49 and a shut-off valve 50 and expediently also has a pressure gauge (not shown) or is connected to it. The water separator 48 is provided with two connections 51 and 52 in order to be able to connect both a compressed air gun and a spray gun. The separator housing 53 is expediently provided with a filter. Paper filters can also be used here; Cotton filters, for example, have proven useful, e.g. can be introduced in the form of a tampon and bring about the necessary cleaning of the compressed air.

Die Anschlußschnur zur elektrischen Verbindung kann am freien Ende mit einem üblichen Schukostecker versehen sein und im Anschlußkasten 54 angeschlossen werden, der auch mit einem Netzschalter ausgestattet sein kann, wenn letzterer nicht der besseren Erreichbarkeit wegen an den Seiten oder der Vorderseite der Anordnung vorgesehen ist.The connecting cord for the electrical connection can be provided at the free end with a conventional Schuko plug and connected in the connection box 54, which can also be equipped with a power switch, if the latter is not provided for better accessibility on the sides or the front of the arrangement.

Um der gestellten Aufgabe genügen zu können sind in der Reinigungskammer beidseitig des Drehtellers 12 Steigerohre 55 vorgesehen, die in eine Spritzdüse 56 enden, und die im Bereiche vorzugsweise einer Mantellinie mit gegen den Drehteller hin gerichteten weiteren Spritzdüsen versehen sind. Diese Spritzdüsen können eingesetzt, eingepreßt oder eingeschraubt sein, sie können aber auch als gerichtete Bohrungen ausgeführt sein. Durch ihre Ausrichtung auf den Drehteller und eine diesen langsam drehende Antriebsvorrichtung 57, die aus einem hinter der Reinigungskammer angeordneten elektrischen Getriebemotor, einer verbindenden Welle und einem Winkelgetriebe bestehen kann, wird erreicht, daß praktisch sämtliche Flächenbereiche auf den Drehteller aufgebrachten Reinigungsgutes auch für die Reinigungsmittelstrahlen erreichbar sind.In order to be able to meet the task, riser tubes 55 are provided on both sides of the turntable in the cleaning chamber, which end in a spray nozzle 56 and which are preferably provided in the region of a surface line with further spray nozzles directed towards the turntable. These spray nozzles can be inserted, pressed in or screwed in, but they can also be used as directed bores be executed. By aligning them on the turntable and a slowly rotating drive device 57, which can consist of an electric gear motor arranged behind the cleaning chamber, a connecting shaft and an angular gear, it is achieved that practically all surface areas applied to the turntable can also be reached by the cleaning agent jets are.

Während die verwendeten Spritzpistolen durch Preßluft betrieben werden, werden die Steigerohre 55 durch eine Wasserpumpe 58 und ein dieser nachgeordnetes Ventil 59 gespeist wobei der Sauganschluß der Wasserpumpe 58 in einen der Behälter 26 geführt ist. Die automatische Betriebsweise läßt sich am Schaltkasten 60 einstellen, der über mehrere Einstellelemente verfügt, mittels deren die Zeit des Aufspritzens, d.h. der Wirksamkeit der Wasserpumpe 58, und der des Trocknens über die Rücklaufdüsen 46 einstellbar sind, und mittels deren zweckmäßig auch die Drehzahl der Antriebsvorrichtung 57 des Drehtellers 12 bestimmt wird. Vorteilhaft ist auch ein Endschalter 61 vorgesehen, welcher, bspw. über einen mit dem Scharnier verbundenen Winkelhebel, das Öffnen der Tür 4 der Reinigungskammer 3 erfaßt und schon nach kurzem Öffnungshub zumindest Spritzvorgänge unterbindet und zweckmäßig auch den Luftumlauf unterbricht, um den Austritt von Reinigungsmittel enthaltender Luft aus der geöffneten Reinigungskammer zu unterbinden. Als zweckmäßig wurde auch empfunden, eine der Laufrollen 62 als schaltbare Bremsrolle auszubilden, um einen definierten Stand der Anordnung zu erwirken. das Arbeiten wird durch eine oberhalb der Reinigungskammer 3 vorgesehene und diese durch die Sichtscheibe 7 erleuchtende Lampe 63 erleichtert. In einem mit der Rückseite der Reinigungskammer verbundenen Rohr ist ausziehbar und höheneinstellbar ein Teleskopgalgen 64 angeordnet, welcher es gestattet, die jeweils gewünschte Höhe des Aktivkohlefilters 41 einzustellen. Das Arbeiten wird weiterhin erleichtert, und ein unbeabsichtigtes Herabfallen von Reinigungsgut wird unterbunden, wenn der Drehteller 12 mit einem ihn umziehenden Bordrand 65 ausgestattet ist. Die Griffigkeit und damit die Standsicherheit des Reinigungsgutes wird weiterhin verbessert, wenn der Drehteller 12 als Drahtkorb ausgebildet ist.While the spray guns used are operated by compressed air, the riser pipes 55 are fed by a water pump 58 and a valve 59 arranged downstream thereof, the suction connection of the water pump 58 being guided into one of the containers 26. The automatic mode of operation can be set on the switch box 60, which has a plurality of setting elements, by means of which the time of the spraying, ie the effectiveness of the water pump 58, and that of the drying via the return nozzles 46 can be set, and by means of which the speed of the drive device is also expedient 57 of the turntable 12 is determined. A limit switch 61 is also advantageously provided, which detects the opening of the door 4 of the cleaning chamber 3, for example via an angle lever connected to the hinge, and at least prevents spraying operations after a short opening stroke and also expediently interrupts the air circulation in order to prevent the release of cleaning agents Prevent air from the open cleaning chamber. It was also considered expedient to design one of the rollers 62 as a switchable brake roller in order to achieve a defined state of the arrangement. the work is facilitated by a lamp 63 provided above the cleaning chamber 3 and illuminating it through the viewing window 7. In a tube connected to the rear of the cleaning chamber, a telescopic boom 64 is arranged that can be pulled out and adjusted in height, which allows the desired height of the activated carbon filter to be set 41 set. The work is further facilitated and inadvertent falling of the cleaning goods is prevented if the turntable 12 is equipped with a rim 65 surrounding it. The grip and thus the stability of the items to be cleaned is further improved if the turntable 12 is designed as a wire basket.

Im Betriebe werden nach Hochschwenken der Tür 4 und Auflegen derselben auf die Gummipuffer 6 die zu reinigenden Gegenstände auf den perforierten oder aus Drahtgeflecht gebildeten Drehteller 12 aufgebracht; gegebenenfalls kann dieses, bspw. bei Printplatten, vermittels besonderer, diesen angepaßter Haltevorrichtungen erfolgen. Nach dem Aufbringen wird die Tür in die dargestellte Arbeitsstellung zurückgeschwenkt, und durch die Öffnung 9 relativ geringen Querschnittes läßt sich zunächst eine Druckluftpistole 67 einschieben, um losen Dreck und Verschmutzungen von den zu reinigenden Gegenständen abzublasen. Anschließend wird die Wasserpumpe 58 eingeschaltet, um eine erste Reinigung des Reinigungsgutes zu bewirken. Mit einer gewissen Standzeit wird das erforderliche Einweichen erreicht, und danach wird nochmals vermittels der Sprühflüssigkeit das Reinigungsgut eingesprüht, wobei die angelösten Verschmutzungsbestandteile, wie bspw. teilweise verharzte Öle, nach dem Einweichen nunmehr abgespritzt werden. Gleichzeitig wird durch Einschalten der Antriebsvorrichtung 57 der Drehteller 12 mit dem Reinigungsgut kontinuierlich gedreht, so daß die Strahlen der Spritzdüsen 56 dieses von allen Seiten erreichen.In operation, after swiveling up the door 4 and placing it on the rubber buffer 6, the objects to be cleaned are applied to the turntable 12 which is perforated or made of wire mesh; if necessary, this can be done, for example in the case of printed circuit boards, by means of special holding devices adapted to them. After the application, the door is pivoted back into the working position shown, and a compressed air gun 67 can first be inserted through the opening 9 of relatively small cross-section in order to blow loose dirt and dirt off the objects to be cleaned. The water pump 58 is then switched on in order to effect a first cleaning of the items to be cleaned. The required soaking is achieved with a certain service life, and then the items to be cleaned are sprayed in again by means of the spray liquid, the detached contamination components, such as partially resinified oils, being sprayed off after soaking. At the same time, by turning on the drive device 57, the turntable 12 with the items to be cleaned is rotated continuously, so that the jets of the spray nozzles 56 reach them from all sides.

Ein letztes Überspritzen sichert die gewünschte Sauberkeit. Eine oberflächliche Trocknung kann zunächst durch nochmaligen Einsatz der Druckluftpistole 67 bewirkt werden, mittels derer noch haftende Teile und tropfende Reinigungsflüssigkeit abgeblasen werden können. Ein noch längeres Verweilen in der Reinigungskammer bei arbeitendem Gebläse erlaubt eine vollkommene Trocknung, obwohl selbst bei elektronischen Geräten des geringen Leitwertes der verwendeten Reinigungsflüssigkeit wegen ein restloses Trocknen nicht unbedingt erforderlich ist.A final overmolding ensures the desired cleanliness. Superficial drying can first be achieved by using the compressed air gun 67 again, by means of which still adhering parts and dripping cleaning liquid can be blown off. An even longer stay in the cleaning chamber with the blower working allows complete drying, although even with electronic devices the low conductivity of the cleaning fluid used does not necessarily require complete drying.

Als wesentlich hat sich gezeigt, daß während des Arbeitens des Gebläses 30 ständig der Reinigungskammer Luft, gegebenenfalls vermengt mit Tröpfchen der Reinigungsflüssigkeit, entzogen wird. Diese Luft wird aber in einem wesentlichen Prozentsatz, bspw. 92%, über die Krümmer 43, die Rücklaufschläuche 44 und die Rücklaufdüsen 46 so zurückgeführt, daß die rücklaufende Luft über das Reinigungsgut streicht und zusätzlich Verschmutzungen und Reinigungsmittelreste mitzunehmen vermag, zumindest aber trocknend wirkt. Durch Drehen und Höheneinstellung lassen sich die Düsen auf das Reinigungsgut einstellen und mittels der Schrauben der Führungsmuffen 45 fixieren.It has been shown to be essential that air, possibly mixed with droplets of the cleaning liquid, is constantly removed from the cleaning chamber while the blower 30 is operating. However, this air is returned in a substantial percentage, for example 92%, via the elbows 43, the return hoses 44 and the return nozzles 46 such that the return air sweeps over the items to be cleaned and is additionally capable of taking away dirt and detergent residues, but at least has a drying effect. By rotating and adjusting the height, the nozzles can be adjusted to the items to be cleaned and fixed with the screws of the guide sleeves 45.

Während des Arbeitens der Druckluftpistole Sowie der Sprühpistole wird durch diese zusätzlich Luft in die Reinigungskammer 3 hineingeblasen, und die Öffnung 9 ist so gestaltet, daß einerseits zwar ein praktisch ungestörtes Arbeiten mit der Druckluft- Sowie der Sprühpistole möglich ist, andererseits aber nicht allzuviel Fremdluft eintritt. Gleichzeitig wird der in der Reinigungskammer 3 sich einstellende geringe Unterdruck benutzt, um jedwedes Entweichen von Tröpchen oder Dämpfen des Reinigungsmittels nach außen zu unterbinden: Durch die Öffnung 9 wird stets ein geringer Luftstrom in die Reinigungskammer fließen und damit die in dieser schon befindliche Luft in Richtung auf den Prallfilter 13 und den Krümmer 14 zurückdrücken.During the operation of the compressed air gun and the spray gun, air is additionally blown into the cleaning chamber 3 through this, and the opening 9 is designed such that, on the one hand, a practically undisturbed working with the compressed air and the spray gun is possible, but on the other hand not too much external air enters . At the same time, the low vacuum that occurs in the cleaning chamber 3 is used to prevent any escape of droplets or vapors of the cleaning agent to the outside: Through the opening 9, a small air flow will always flow into the cleaning chamber and thus the air already in it in the direction press back on the impact filter 13 and the manifold 14.

Diese zufließende Luft muß bei der Bildung des Luftkreislaufes wieder abgeschieden werden: Die Menge der abgeschiedenen Luft wird hierbei durch den in dem Sammelraum 34 anstehenden Druck in Verbindung mit dem vom Aktivkohlefilter 41 gegebenen Widerstand bestimmt. Diese nach außen abzuführende Luft wird zunächst einmal durch das Schirmblech 37 gegen den eigentlichen Sammelraum 34 abgedeckt, so daß im Abzugraum und in dem an den Krümmer 38 angeschlossenen Abluftschlauch 40 weitere Abscheidevorgänge aufzutreten vermögen. Die endgültige Reinigung der aus dem Kreislauf abzuscheidenden Luft wird durch den Aktivkohlefilter 41 bewirkt. Eine in vielen Fällen ausreichende Abluftreinigung wird jedoch schon beim direkten Anschluß des Aktivkohlefilters 41 an den Krümmer 38 erreicht.This inflowing air must be separated again when the air circuit is formed: the amount of air separated is determined here by the pressure in the collecting space 34 in connection with the resistance given by the activated carbon filter 41. This air to be discharged is initially covered by the shield plate 37 against the actual collecting space 34, so that 40 further separation processes can occur in the exhaust space and in the exhaust hose 38 connected to the elbow 38. The final cleaning of the air to be separated from the circuit is effected by the activated carbon filter 41. In many cases, however, adequate exhaust air purification is achieved when the activated carbon filter 41 is connected directly to the manifold 38.

Damit ist durch Verfeinerung sowohl der Regenerierung als auch der Abscheidung gegenüber der bekannten Anordnung die in den Aufstellungsraum austretende Luft derart weitgehend gereinigt, daß sie weder gesundheitsbeeinträchtigend in Erscheinung treten kann noch überhaupt, bspw. durch den Geruchssinn, wahrnehmbar ist. Durch die weitgehende Regenerierung ist es nicht mehr nötig, zwei unterschiedliche Flüssigkeiten, nämlich neue und, zur Einleitung der Reinigung und für das Aufweichen, bereits gebrauchte, jedoch regenerierte Flüssigkeit zu verwenden. Die Anzahl der benötigten Behälter kann daher auf einen reduziert werden, so daß auch hierdurch die Mobilität der Anordnung erhöht wird. Die weitgehende Regenerierung sichert auch eine überaus lange Lebensdauer der in den Kreislauf eingebrachten Reinigungsflüssigkeit, die praktisch über sehr lange Zeit verwendungsfähig bleibt und daher auch kaum Entsorgungsprobleme bedingt. Insbesondere bei der Verwendung der für diese Anordnung vorgesehenen halogenfreien sowie weder chlorierte noch fluorierte Kohlenwasserstoffe enthaltenden Reinigungsflüssigkeit werden sowohl durch deren Zusammensetzung als auch durch die minimalen Mengen der ausgetragenen Flüssigkeit die Entsorgungsprobleme auf ein Mindestmaß reduziert.Thus, by refining both the regeneration and the separation compared to the known arrangement, the air exiting into the installation space is so largely cleaned that it can neither appear to be harmful to health nor be perceptible at all, for example by the sense of smell. Due to the extensive regeneration, it is no longer necessary to use two different liquids, namely new and, to initiate cleaning and for softening, already used but regenerated liquid. The number of containers required can therefore be reduced to one, so that this also increases the mobility of the arrangement. The extensive regeneration also ensures an extremely long lifespan of the cleaning liquid introduced into the circuit, which remains practically usable for a very long time and therefore hardly causes disposal problems. Particularly when using the halogen-free cleaning liquid intended for this arrangement and containing neither chlorinated nor fluorinated hydrocarbons, both through their composition as well as through the minimal amounts of the discharged liquid the disposal problems are reduced to a minimum.

So lassen sich in der gleichen, mobilen Anordnung, die durch ihr erheblich verringertes Gewicht auch leicht zu transportieren ist, nacheinander unterschiedlichste Teile effektiv und praktisch vollständig von Schmutz, Ölresten und dergleichen befreien, wobei sich vorteilhaft bemerkbar macht, daß diese Reinigung keine wesentlichen mechanischer Beanspruchungen bedingt und damit außerordentlich schonend erfolgt. So können nacheinander ganze Schreibmaschinen, Feinschreiber oder deren Teile, Druckwerke und sowohl mechanische als auch rein elektronische Teile von elektronischen Anordnungen problemlos gereinigt werden.So in the same mobile arrangement, which is also easy to transport due to its significantly reduced weight, a wide variety of parts can be effectively and practically completely freed from dirt, oil residues and the like in succession, with the advantageous noticeable fact that this cleaning does not involve any significant mechanical stresses conditional and therefore extremely gentle. In this way, entire typewriters, fine typewriters or their parts, printing units and both mechanical and purely electronic parts of electronic arrangements can be cleaned without problems.

Claims (5)

  1. An arrangement for cleaning mechanical and/or electrical equipment or devices with cleaning liquids comprising
    a cleaning compartment which is ventilated by a fan with a baffle plate in front of its suction opening and which comprises a closeable loading opening and
    an outlet below the cleaning compartment to collect cleaning liquid for its regeneration,
    in which the cleaning compartment is arranged above a square, closed substructure and in which the delivery nozzle of the fan is connected by a tube to the bottom part of the substructure, the fan delivering the air removed under suction into an equalizing chamber arranged in the substructure and adjoined by a collecting chamber - into which an aeration pipe leading into the cleaning compartment and a vent pipe open - via baffle filters formed from a number of filter mats knitted from wire arranged on top of one another
    and further comprising
    a turntable for the workpieces to be cleaned which is arranged in the cleaning compartment,
    characterized in that the cleaning compartment (3) comprises at least one riser tube (55) which is fed with cleaning liquid by a pump (58) and which is provided with spray nozzles (56) directed onto the turntable (12) and in that the frame (32) comprises five 6 to 12 mm mesh filter mats (33) knitted from a 0.3 to 0.6 mm thick metal wire.
  2. An arrangement as claimed in claim 1, characterized in that the turntable (12) is provided with an encircling border (65).
  3. An arrangement as claimed in claim 1 or 2, characterized in that the turntable (12) is in the form of a wire basket.
  4. An arrangement as claimed in any of claims 1 to 3, characterized in that a drive assembly (57) is associated with, and continuously rotates, the turntable (12).
  5. An arrangement as claimed in any of claims 1 to 4, characterized by a switch box (60) by the control elements of which the switch-on time of the pump (58), the operating time of the fan (30) and, advantageously, the operating time and rotational speed of the drive assembly (57) can be adjusted.
EP91903115A 1990-01-03 1990-12-21 Device for cleaning mechanical appliances, small parts and/or electronic switch units Expired - Lifetime EP0509052B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE9000018U DE9000018U1 (en) 1990-01-03 1990-01-03 Device for cleaning mechanical devices, small parts and/or electronic switching units
DE9000018U 1990-01-03
PCT/EP1990/002287 WO1991009689A1 (en) 1990-01-03 1990-12-21 Device for cleaning mechanical appliances, small parts and/or electronic switch units

Publications (2)

Publication Number Publication Date
EP0509052A1 EP0509052A1 (en) 1992-10-21
EP0509052B1 true EP0509052B1 (en) 1995-06-07

Family

ID=6849785

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91903115A Expired - Lifetime EP0509052B1 (en) 1990-01-03 1990-12-21 Device for cleaning mechanical appliances, small parts and/or electronic switch units

Country Status (5)

Country Link
EP (1) EP0509052B1 (en)
DE (2) DE9000018U1 (en)
DK (1) DK0509052T3 (en)
ES (1) ES2072599T3 (en)
WO (1) WO1991009689A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009005350A1 (en) * 2009-01-16 2010-07-22 Robert Sporer washing machine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3634622C2 (en) * 1986-10-10 1996-02-22 Frohn Walter Method for cleaning objects using a liquid cleaning agent and device for carrying out the method
DE3802486A1 (en) * 1987-01-29 1988-08-11 Rudolf Schmitz Device for cleaning mechanical appliances, small parts and/or electronic switching units

Also Published As

Publication number Publication date
DK0509052T3 (en) 1995-10-30
EP0509052A1 (en) 1992-10-21
WO1991009689A1 (en) 1991-07-11
ES2072599T3 (en) 1995-07-16
DE9000018U1 (en) 1990-02-22
DE59009218D1 (en) 1995-07-13

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