EP0380524B1 - Device for cleaning surfaces - Google Patents

Device for cleaning surfaces Download PDF

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Publication number
EP0380524B1
EP0380524B1 EP19880908100 EP88908100A EP0380524B1 EP 0380524 B1 EP0380524 B1 EP 0380524B1 EP 19880908100 EP19880908100 EP 19880908100 EP 88908100 A EP88908100 A EP 88908100A EP 0380524 B1 EP0380524 B1 EP 0380524B1
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EP
European Patent Office
Prior art keywords
suction head
suction
cleaning fluid
hydraulic motor
pipe
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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
EP19880908100
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German (de)
French (fr)
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EP0380524A1 (en
Inventor
Heinrich Abbrederis
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Individual
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Individual
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4063—Driving means; Transmission means therefor
    • A47L11/4069—Driving or transmission means for the cleaning tools
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/29—Floor-scrubbing machines characterised by means for taking-up dirty liquid
    • A47L11/30—Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction
    • A47L11/302—Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction having rotary tools
    • A47L11/305—Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction having rotary tools the tools being disc brushes
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4013—Contaminants collecting devices, i.e. hoppers, tanks or the like
    • A47L11/4016—Contaminants collecting devices, i.e. hoppers, tanks or the like specially adapted for collecting fluids
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4027—Filtering or separating contaminants or debris
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4036—Parts or details of the surface treating tools
    • A47L11/4038—Disk shaped surface treating tools
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4036—Parts or details of the surface treating tools
    • A47L11/4044—Vacuuming or pick-up tools; Squeegees
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/408—Means for supplying cleaning or surface treating agents
    • A47L11/4088—Supply pumps; Spraying devices; Supply conduits

Definitions

  • the invention relates to a device for cleaning surfaces by suction of the moistened contaminants, with a tank for a cleaning liquid, from which a line for the supply of the cleaning liquid leads to a suction head, and with a device for generating the negative pressure causing the suction, which is connected to the suction head via a flexible suction line, the tank, the line and the suction line forming a closed circuit for the cleaning liquid which is extracted together with the impurities and fed to a filter for separating the impurities, and wherein the suction head is an annular wiping and or or brush element, which is driven by a drive for circulating movement about an axis normal to the surface to be cleaned, and wherein the cleaning fluid within the path of the wiper and / or brush element rotating around the suction mouth of the suction line is broken up t will.
  • wet vacuum cleaners devices for wet cleaning of surfaces are designed as so-called wet vacuum cleaners.
  • water is applied to a horizontal surface to be cleaned and the moistened impurities are sucked off through a suction hose to the filter, which retains the solid components of the extracted medium in the manner of a conventional vacuum cleaner.
  • the water applied before the actual cleaning process is carried out usually remains on the surface to be cleaned for a longer period of time and can thereby damage it, furthermore the cleaned surface remains wet, which is often the case an accident risk.
  • a device of the type described at the outset is also known (FR-PS 2 403 774), in which either two counter-rotating rollers are arranged on the suction head, the axes of which lie parallel to one another and parallel to the surface to be cleaned, or a brush ring which surrounds the centrally arranged suction line mouth rotates, the rotary movement of this brush ring being caused by the recoil of nozzles arranged on its top surface, from which a pressure medium flows out.
  • the disadvantage here is the unreliable drive of the brush element, because in the first-mentioned variant, the Suction head along the surface to be cleaned in the direction normal to the roller axis also affects the rotation of the two rollers, so that it can happen that one roller is almost stationary and only the other roller is rotating. In the second variant, the operator must absorb the torque exerted by the rotating brush ring, which means additional effort. In addition, the supply of the cleaning liquid is unreliable, since this liquid is supplied in the region of the outer circumference of the brush ring and is therefore thrown outwards by its rotational movement, where the suction effect is no longer reliably provided.
  • the invention has for its object to avoid the disadvantages of the known devices and to improve a device of the type described in such a way that the drive of the wiping and / or brushing element takes place reliably, as well as the suction of the cleaning liquid supplied to the suction head. Furthermore, the aim is to create a handy, light-weight suction head of small dimensions, which can be operated easily and with little effort.
  • the invention solves this problem in that the wiping and / or brushing element consists of two concentrically arranged rings which are driven in opposite directions about the common axis, the cleaning liquid being introduced into the gap between the two rotating rings and for driving the Orbital movement of both rings a hydraulic motor is arranged in the suction head.
  • the oppositely rotating rings of the wiping or brushing element prevent a substantial torque from the suction head from being transferred to the operator and the introduction of the cleaning liquid between the two rings ensures effective use of the cleaning liquid and prevents the same from being thrown outwards, especially by the Extraction caused by the inflow of air drives the cleaning liquid radially inwards.
  • the use of a hydraulic motor for driving the two rings brings significant advantages in terms of reducing the weight of the suction head and reducing the dimensions of this head, so that the handiness of the suction head and thus of the entire device is improved. Since - in contrast to the known construction described at the beginning - a displacement of the suction head along the surface to be cleaned does not have any effect on the rotary movement of the two rings, the hydraulic motor does not need excessively to be highly trained.
  • cleaning liquid generally a mixture of water and cleaning agent
  • This liquid wets essentially only that area of the surface to be cleaned which is cleaned immediately
  • This filter is a replaceable membrane filter which can be used until it has to be replaced by the impurities or the blockages caused thereby. Over this period of time, the water / detergent mixture circulates in a closed circuit and can therefore be used again and again.
  • Such a device can also be used on non-horizontal surfaces and the exposure time of the cleaning liquid applied to the surface to be cleaned is very short, so that this liquid has no time to penetrate the surface and thereby damage it.
  • Complicated surfaces can be cleaned in all positions, even overhead, especially since the suction head can be designed as a component that can be easily guided by hand and the wiping and / or brushing element supports the cleaning effect.
  • this organ is formed by circumferential brush wreaths, however, if desired, it can also have an abrasive effect, in particular if the pressure on the suction head is increased by hand, which is easily possible due to the direct holding and guiding of the suction head.
  • this suction head can also be arranged on an interchangeable extension in order to be able to reach and clean more distant places more easily.
  • the device according to the invention leaves an almost dry surface after cleaning, which can thus be walked on immediately without an accident.
  • the cleaning liquid can also be filtered biologically pure, so that only absolutely pure water and the cleaning agents added to it remain in circulation.
  • a plurality of nozzles distributed along the circumference of the gap are provided for the introduction of the cleaning liquid and are connected to the line for the cleaning liquid via a distributor line.
  • the lines for the hydraulic motor are expediently provided in the form of pressure hoses in the suction line, so that these lines are protected and a clear, handy arrangement is achieved.
  • a pinion sits on the output shaft of the hydraulic motor, which pinion is arranged between two toothed rims of the two rings of the wiping and / or brushing element facing each other and meshes with these two ring gears.
  • a sight glass for the cleaning liquid is expediently provided on the tank connected to the suction line and is flushed with the cleaning liquid behind the filter, so that the state of the cleaning liquid which is again supplied to the suction head can be checked.
  • a pressure regulator can be located in the line leading to the suction head for the cleaning liquid, from which a return line leads into the tank.
  • a heater can be provided in this line in order to heat the applied cleaning liquid.
  • Fig.1 shows an overview of the device
  • Fig.2 the suction head of the same in a larger scale in section.
  • the device has a tank 2 for the cleaning liquid which can be moved on wheels 1 and whose liquid level in the tank 2 is indicated by 3.
  • a vacuum is generated in the tank 2 above the liquid level 3 by an electric motor 4, for example by means of a conventional suction fan, which vacuum in a suction line 5, preferably a hose, to which a suction head 6 is connected.
  • the motor 4 also drives a pump 7, which is designed as a diaphragm pump and draws cleaning liquid from the tank 2 via a suction line 8 and feeds cleaning liquid under pressure to the suction head 6 via a line 9.
  • a horizontal filter 10 expediently a replaceable membrane filter with a correspondingly selected pore size, is installed in the tank 2 at a distance from its bottom, the suction line 8 leading below this filter 10 away from the tank 2, so that only pure liquid can enter the suction line 8.
  • the state of this liquid can be checked through a sight glass 11, which likewise rises from the tank 2 below the filter 10 and is connected at the top to the vacuum chamber 12 located above the liquid level 3.
  • the line 9 can be guided within the suction line 5, for example as a pressure hose.
  • this line 9 there is a pressure regulator 13, to which a pressure indicator 14 is connected, which displays the pressure prevailing in line 9.
  • a return line 15 leads from the pressure regulator 13 back to the tank 2 for any excessively pumped cleaning liquid.
  • a heater 16 for heating the cleaning liquid can be provided in the line 9, expediently an electrical heating resistor which is fed in via line 17.
  • the motor 4 drives a hydraulic pump 18, from which a pressure line 19 leads to the suction head 6 and a return line 20 from the latter.
  • a pressure line 19 leads to the suction head 6 and a return line 20 from the latter.
  • These two lines can also be arranged within the suction line 5, for example in the form of pressure hoses.
  • the pressure line 19 there is a three-way valve 21 through which a partial or complete short circuit between the two lines 19, 20 can be achieved, so that the amount of liquid flowing in the pressure line 19 to the suction head 16 can be set as desired.
  • This serves to regulate the speed of a hydraulic motor 22 (FIG. 2) accommodated in the suction head 6, which serves to rotate two brush rings 24, 25 that bilge a wiping or brushing member 23.
  • each of the two brush rings 24, 25 is held in a receptacle 26 or 27, appropriately clamped, these two receptacles 26, 27 in the form of rails formed with a U-profile running in a ring around the central axis 28 of the suction head 6, specifically in opposite directions of rotation.
  • the receptacles 26, 27 have webs 29, 30 projecting upwards, the ones on the inside and outside Sprockets 31 and 32 are provided, both of which mesh with a pinion 33 which is non-rotatably mounted on the output shaft 34 of the hydraulic motor 22.
  • the two webs 29, 30 carry ball bearings 35 on the side facing away from the ring gear 31 and 32, respectively, for mounting on an outer or inner bearing sleeve 36 or 37.
  • Both bearing sleeves 36, 37 are attached to the housing 38 of the suction head 6 in the form of sleeves and secured by screws 39.
  • the housing 38 carries a flange 40 on the inside for supporting and holding the hydraulic motor 22, to which the pressure line 19 and the return line 20, in particular in the form of pressure hoses, by means of suitable nipples or the like. are connected.
  • the line 9 for the cleaning liquid to be supplied also opens into the suction head 6.
  • the line 9 is connected to a ring line 41 which extends at least over a large part of the circumference of the suction head 6 and from which a plurality of nozzles 42 point down to the surface 43 to be cleaned.
  • the nozzles 42 open into an annular gap 44 between the two brush rings 24, 25 and spray the pressurized water / cleaning agent mixture there onto the surface 43 to be cleaned.
  • This liquid cannot spread to the outside, since it is prevented on the one hand by the outer brush ring 24 and on the other hand by the air flowing in from the outside and sucked off through the suction line 5. This liquid therefore seeps in under the inner brush ring 25 and is sucked off via the suction line 5 together with the contaminants carried by it.
  • the described storage of the two receptacles 26, 27 carrying the brush rings 24, 25 in the housing 38 which can be made of metal or plastic, ensures storage that is insensitive to dust and other impurities and also to impacts, with both the brushes and the storage being Removal of the two bearing sleeves 36, 37 can be changed quickly and easily.
  • the suction head 6 In order to easily guide the suction head 6 and also to be able to use it on vertical surfaces or overhead, the suction head 6 is dimensioned such that it can be guided with one hand. For this reason, for reasons of weight saving, it is expedient to reduce the weight of the hydraulic motor 22 to a minimum.
  • a hydraulic motor which is designed in the form of an internal gear motor, the internal gear and housing of which are made of aluminum, while the gear ring of plastic is particularly suitable for this purpose.
  • the hollow output shaft 34 is in the aluminum gear pressed from steel, which carries at its end the pinion 33 also made of plastic.
  • Such a hydraulic motor can be reliably driven by suitable flexible hydraulic lines from the hydraulic pump 18, with the three-way valve 21 making it easy to regulate the speed.
  • the amount of cleaning liquid supplied via the nozzles 42 can also be regulated by means of the adjustable pressure regulator 13. This is important in order to compensate for the decreasing flow rate of the filter 10 over time. If necessary, the supply of the cleaning liquid can also be completely switched off by means of the pressure regulator 13.
  • the housing 38 is formed with a connecting piece 45 so that it can be connected to the suction line 5 by means of a plug closure.
  • the two hydraulic lines 19, 20 and the line 9 for the cleaning liquid can be separated from the suction head 6 by means of easily separable connections, in order to be able to replace the suction head with another version if necessary. It is therefore easily possible to adapt the device, in particular the suction head diameter, to the surface to be cleaned in each case. Furthermore, there is the possibility, by choosing the material of the filter 10, to adapt to the cleaning liquid used in each case and to the impurities to be expected.
  • seals 46, 47 in particular made of felt, can be provided between the circumferential receptacles 26, 27 and the fixed components (bearing sleeves 36, 37) opposite them.

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  • Cleaning In General (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

A device for cleaning surfaces has a suction head (6) with two concentric annular counterrotating brushes (24) on the side facing the surfaces to be cleaned. A cleaning fluid is sprayed through a duct (9) into the gap between the two annular brushes and then sucked through a suction duct (5), together with the impurities, into a tank (2) for the cleaning liquid (3). The rotating annular brushes (24) are driven by a hydraulic motor housed in the suction head (6), which is fed by ducts (19, 20). This suction head is also suitable for cleaning vertical or overhead surfaces.

Description

Die Erfindung bezieht sich auf eine Vorrichtung zur Reinigung von Flächen durch Absaugung der angefeuchteten Verunreinigungen, mit einem Tank für eine Reinigungsflüssigkeit, von dem eine Leitung für die Zufuhr der Reinigungsflüssigkeit zu einem Saugkopf führt, und mit einer Einrichtung zur Erzeugung des die Absaugung bewirkenden Unterdruckes, die über eine biegsame Absaugleitung mit dem Saugkopf verbunden ist, wobei der Tank, die Leitung und die Absaugleitung einen geschlossenen Kreislauf für die zusammen mit den Verunreinigungen abgesaugte und einem Filter zur Abscheidung der Verunreinigungen zugeführte Reinigungsflüssigkeit bilden, und wobei der Saugkopf ein ringförmiges Wisch- und bzw. oder Bürstorgan trägt, das durch einen Antrieb zur Umlaufbewegung um eine zur zu reinigenden Fläche normale Achse angetrieben ist, und wobei die Reinigungsflüssickeit innerhalb der Bahn des um die Ansaugmündung der Absaugleitung umlaufenden Wisch- und bzw. oder Bürstorganes aufgebracht wird.The invention relates to a device for cleaning surfaces by suction of the moistened contaminants, with a tank for a cleaning liquid, from which a line for the supply of the cleaning liquid leads to a suction head, and with a device for generating the negative pressure causing the suction, which is connected to the suction head via a flexible suction line, the tank, the line and the suction line forming a closed circuit for the cleaning liquid which is extracted together with the impurities and fed to a filter for separating the impurities, and wherein the suction head is an annular wiping and or or brush element, which is driven by a drive for circulating movement about an axis normal to the surface to be cleaned, and wherein the cleaning fluid within the path of the wiper and / or brush element rotating around the suction mouth of the suction line is broken up t will.

In der Regel sind Vorrichtungen zur feuchten Reinigung von Flächen als sogenannte Naßstaubsauger ausgebildet. Hiebei wird auf eine horizantale, zu reinigende Fläche Wasser aufgetragen und die angefeuchteten Verunreinigungen werden durch einen Saugschlauch zum Filter abgesaugt, welches die festen Bestandteile des abgesaugten Mediums nach Art eines üblichen Staubsaugers zurückbehält. Nachteilig ist hiebei, daß eine solche vorrichtung nur bei horizantalen Flächen anwendbar ist und daß das vor der Durchführung des eigentlichen Reinigungsvarganges aufgetragene Wasser zumeist längere Zeit auf der zu reinigenden Fläche steht und dadurch diese schädigen kann, ferner bleibt die gereinigte Fläche naß zurück, was häufig eine Unfallgefahr bedeutet.As a rule, devices for wet cleaning of surfaces are designed as so-called wet vacuum cleaners. Here, water is applied to a horizontal surface to be cleaned and the moistened impurities are sucked off through a suction hose to the filter, which retains the solid components of the extracted medium in the manner of a conventional vacuum cleaner. It is disadvantageous that such a device can only be used on horizontal surfaces and that the water applied before the actual cleaning process is carried out usually remains on the surface to be cleaned for a longer period of time and can thereby damage it, furthermore the cleaned surface remains wet, which is often the case an accident risk.

Es ist auch eine Vorrichtung der eingangs geschilderten Art bekannt (FR-PS 2 403 774), bei welcher am Saugkopf entweder zwei gegensinnig umlaufende Walzen angeordnet sind, deren Achsen parallel zueinander und parallel zur zu reinigenden Fläche liegen, oder ein Bürstenring, der um die mittig angeordnete Absaugeleitungsmündung rotiert, wobei die Drehbewegung dieses Bürstenringes durch den Rückstoß an seiner Deckfläche angeordneter Düsen hervorgerufen wird, aus welchen ein Druckmittel ausströmt. Nachteilig ist hieran der unzuverlässige Antrieb des Bürstorganes, denn bei der zuerst genannten Variante bewirkt eine Verschiebung des Saugkopfes entlang der zu reinigenden Fläche in Richtung normal zur Walzenachse auch eine Beeinflussung der Drehung der beiden Walzen, so daß es vorkommen kann, daß die eine Walze fast stillsteht und sich nur die andere Walze dreht. Bei der zweitgenannten Variante muß die Bedienungsperson das vom rotierenden Bürstenring ausgeübte Drehmoment aufnehmen, was zusätzlichen Kraftaufwand bedeutet. Außerdem ist die Zufuhr der Reinigungsflüssigkeit unzuverlässig, da diese Flüssigkeit im Bereich des äußeren Umfanges des Bürstenringes zugeführt wird und daher durch dessen Drehbewegung nach außen geschleudert wird, wo die Saugwirkung nicht mehr verläßlich gegeben ist.A device of the type described at the outset is also known (FR-PS 2 403 774), in which either two counter-rotating rollers are arranged on the suction head, the axes of which lie parallel to one another and parallel to the surface to be cleaned, or a brush ring which surrounds the centrally arranged suction line mouth rotates, the rotary movement of this brush ring being caused by the recoil of nozzles arranged on its top surface, from which a pressure medium flows out. The disadvantage here is the unreliable drive of the brush element, because in the first-mentioned variant, the Suction head along the surface to be cleaned in the direction normal to the roller axis also affects the rotation of the two rollers, so that it can happen that one roller is almost stationary and only the other roller is rotating. In the second variant, the operator must absorb the torque exerted by the rotating brush ring, which means additional effort. In addition, the supply of the cleaning liquid is unreliable, since this liquid is supplied in the region of the outer circumference of the brush ring and is therefore thrown outwards by its rotational movement, where the suction effect is no longer reliably provided.

Die Erfindung setzt sich zur Aufgabe, die Nachteile der bekannten Vorrichtungen zu vermeiden und eine Vorrichtung der eingangs geschilderten Art so zu verbessern, daß der Antrieb des Wisch- und bzw. oder Bürstorganes verläßlich erfolgt, ebenso wie die Absaugung der dem Saugkopf zugeführten Reinigungsflüssigkeit. Weiters ist bezweckt, einen handlichen, ein geringes Gewicht aufweisenden Saugkopf geringer Abmessungen zu schaffen, welcher einfach und mit geringem Kraftaufwand bedienbar ist. Die Erfindung löst diese Aufgabe dadurch, daß das Wisch- und bzw. oder Bürstorgan aus zwei konzentrisch zueinander angeordneten, um die gemeinsame Achse gegenläufig angetriebenen Ringen besteht, wobei die Reinigungsflüssigkeit in den Spalt zwischen den beiden umlaufenden Ringen eingebracht wird und daß für den Antrieb der Umlaufbewegung beider Ringe ein Hydraulikmotor im Saugkopf angeordnet ist. Die gegenläufig umlaufenden Ringe des Wisch- bzw. Bürstorganes verhindern, daß ein wesentliches Drehmoment vom Saugkopf auf die Bedienungsperson übertragen wird und die Einleitung der Reinigungsflüssigkeit zischen die beiden Ringe gewährleistet eine wirksame Ausnützung der Reinigungsflüssigkeit und verhindert ein Abschleudern derselben nach außen, zumal der durch die Absaugung hervorgerufene Luftzustrom die Reinigungsflüssigkeit radial nach innen treibt. Die Verwendung eines Hydraulikmotors zum Antrieb der beiden Ringe bringt wesentliche Vorteile im Hinblick auf eine Gewichtserleichterung des Saugkopfes und eine Reduzierung der Abmessungen dieses Kopfes, so daß die Handlichkeit des Saugkopfes und damit der gesamten Vorrichtung verbessert wird. Da sich - zum Unterschied von der eingangs beschriebenen bekannten Konstruktion - eine Verschiebung des Saugkopfes entlang der zu reinigenden Fläche auf die Drehbewegung der beiden Ringe nicht auswirkt, braucht der Hydraulikmotor nicht übermäßig stark ausgebildet zu werden.The invention has for its object to avoid the disadvantages of the known devices and to improve a device of the type described in such a way that the drive of the wiping and / or brushing element takes place reliably, as well as the suction of the cleaning liquid supplied to the suction head. Furthermore, the aim is to create a handy, light-weight suction head of small dimensions, which can be operated easily and with little effort. The invention solves this problem in that the wiping and / or brushing element consists of two concentrically arranged rings which are driven in opposite directions about the common axis, the cleaning liquid being introduced into the gap between the two rotating rings and for driving the Orbital movement of both rings a hydraulic motor is arranged in the suction head. The oppositely rotating rings of the wiping or brushing element prevent a substantial torque from the suction head from being transferred to the operator and the introduction of the cleaning liquid between the two rings ensures effective use of the cleaning liquid and prevents the same from being thrown outwards, especially by the Extraction caused by the inflow of air drives the cleaning liquid radially inwards. The use of a hydraulic motor for driving the two rings brings significant advantages in terms of reducing the weight of the suction head and reducing the dimensions of this head, so that the handiness of the suction head and thus of the entire device is improved. Since - in contrast to the known construction described at the beginning - a displacement of the suction head along the surface to be cleaned does not have any effect on the rotary movement of the two rings, the hydraulic motor does not need excessively to be highly trained.

Die Verwendung konzentrischer Ringe als Reinigungsorgan ist aus der US-PS 3 606 631 an sich bekannt, jedoch ist bei dieser bekannten Konstruktion eine zentrale Anordnung der Absaugöffnung im Saugkopf nicht möglich.The use of concentric rings as a cleaning member is known per se from US Pat. No. 3,606,631, but with this known construction a central arrangement of the suction opening in the suction head is not possible.

Da beim Erfindungsgegenstand ein Verlust an Reinigungsflüssigkeit (im allgemeinen ein Gemisch aus Wasser und Reinigungsmittel) aus dem Saugkopf heraus kaum auftritt, so daß diese Flüssigkeit in wesentlichen lediglich jenen Bereich der zu reinigenden Fläche benetzt, welcher unmittelbar gereinigt wird, ist bei der erfindungsgemäßen Konstruktion ein sinnvoller Kreislauf für die Reinigungsflüssigkeit möglich. Hiebei wird die Reinigungsflüssigkeit sofort nach der Aufbringung (im allgemeinen eine Aufspritzung) wieder durch den im Saugkopf herrschenden Unterdruck abgesaugt und durch die Absaugleitung dem Filter zwecks Abscheidung der Verunreinigungen zugeführt. Zwecmäßig ist dieses Filter ein austauschbares Membranfilter, welches so lange verwendbar ist, bis es durch die Verunreinigungen bzw. die dadurch verursachten Verstopfungen ausgetauscht werden muß. Über diese Zeitspanne ist das Wasser-Reinigungsmittel-Gemisch in geschlossenen Kreislauf im Umlauf und kann daher immer wieder aufs neue verwendet werden. Eine solche Vorrichtung läßt sich auch auf nicht horizontalen Flächen anwenden und die Einwirkungszeit der auf die zu reinigende Fläche aufgebrachte Reinigungsflüssigkeit ist nur sehr gering, so daß diese Flüssigkeit keine Zeit hat, in die Oberfläche einzudringen und dadurch diese zu schädigen. Es lassen sich auch komplizierte Flächen in allen Lagen, auch über Kopf, reinigen, zumal der Saugkopf als von Hand leicht führbarer Bauteil ausgebildet werden kann und das umlaufende Wisch- und bzw. oder Bürstorgan die Reinigungwirkung unterstützt. Im allgemeinen ist dieses Organ von umlaufenden Bürstenkränzen gebildet, jedoch kann es auch, falls gewünscht, eine Scheuerwirkung ausüben, insbesondere dann, wenn der Druck auf den Saugkopf von Hand verstärkt wird, was durch die direkte Halterung und Führung des Saugkopfes leicht möglicht ist. Gegebenenfalls kann dieser Saugkopf aber auch an einer auswechselbaren Verlängerung angeordnet werden, um auch entferntere Stellen leichter erreichen und reinigen zu können. Bei genügender Absaugwirkung hinterläßt die erfindungsgemäße Vorrichtung nach der Reinigung eine fast trockene Oberfläche, welche somit sofort unfallsfrei begehbar ist. Durch geeignete Filterwahl lassen sich jedwede Flächen reinigen, auch Schaufenster usw., ebenso kann die Reinigungsflüssigkeit biologisch rein gefiltert werden, so daß nur absolut reines Wasser und das ihm zugesetzte Reinigungsmitten im Umlauf bleiben.Since there is hardly any loss of cleaning liquid (generally a mixture of water and cleaning agent) out of the suction head in the subject matter of the invention, so that this liquid wets essentially only that area of the surface to be cleaned which is cleaned immediately, is a feature of the construction according to the invention sensible cycle for the cleaning liquid possible. The cleaning liquid is then sucked off again immediately after the application (generally by spraying) by the negative pressure prevailing in the suction head and fed through the suction line to the filter for the purpose of separating the contaminants. This filter is a replaceable membrane filter which can be used until it has to be replaced by the impurities or the blockages caused thereby. Over this period of time, the water / detergent mixture circulates in a closed circuit and can therefore be used again and again. Such a device can also be used on non-horizontal surfaces and the exposure time of the cleaning liquid applied to the surface to be cleaned is very short, so that this liquid has no time to penetrate the surface and thereby damage it. Complicated surfaces can be cleaned in all positions, even overhead, especially since the suction head can be designed as a component that can be easily guided by hand and the wiping and / or brushing element supports the cleaning effect. In general, this organ is formed by circumferential brush wreaths, however, if desired, it can also have an abrasive effect, in particular if the pressure on the suction head is increased by hand, which is easily possible due to the direct holding and guiding of the suction head. If necessary, this suction head can also be arranged on an interchangeable extension in order to be able to reach and clean more distant places more easily. With sufficient suction, the device according to the invention leaves an almost dry surface after cleaning, which can thus be walked on immediately without an accident. By choosing a suitable filter clean any surfaces, including shop windows, etc., the cleaning liquid can also be filtered biologically pure, so that only absolutely pure water and the cleaning agents added to it remain in circulation.

Gemäß einer bevorzugten Ausführungsform der Erfindung sind für die Einbringung der Reinigunsflüssigkeit mehrere entlang des Umfanges des Spaltes verteilte Düsen vorgesehen, die über eine Verteilerleitung an die Leitung für die Reinigungsflüssigkeit angeschlossen sind. Dadurch wird der Zustrom der Reinigungsflüssigkeit in den zwischen den beiden Ringen befindlichen Spalt gleichmäßig, so daß der Reinigunseffekt über die gesamte Fläche des Saugkopfes überall gleichmäßig ist.According to a preferred embodiment of the invention, a plurality of nozzles distributed along the circumference of the gap are provided for the introduction of the cleaning liquid and are connected to the line for the cleaning liquid via a distributor line. As a result, the inflow of cleaning fluid in the gap between the two rings is uniform, so that the cleaning effect is uniform over the entire surface of the suction head.

Zweckmäßig sind gemäß einer Weiterbildung der Erfindung die Leitungen für den Hydraulikmotor in Form von Druckschläuchen in der Absaugeleitung vorgesehen, so daß diese Leitungen geschützt untergebracht sind und eine übersichtliche, handliche Anordnung erzielt wird.According to a further development of the invention, the lines for the hydraulic motor are expediently provided in the form of pressure hoses in the suction line, so that these lines are protected and a clear, handy arrangement is achieved.

Gemäß einer Weiterbildung der Erfindung sitzt auf der Abtriebswelle des Hydraulikmotors ein Ritzel, das zwischen zwei einander zugewendeten Zahnränzen der beiden Ringe des Wisch- und bzw. oder Bürstorganes angeordnet ist und mit diesen beiden Zahnkränzen kämmt. Dies ergibt eine einfache, leicht zu montierende Konstruktion.According to a development of the invention, a pinion sits on the output shaft of the hydraulic motor, which pinion is arranged between two toothed rims of the two rings of the wiping and / or brushing element facing each other and meshes with these two ring gears. This results in a simple, easy to assemble construction.

Zweckmäßig ist erfindungsgemäß an dem an die Absaugleitung angeschlossenen Tank ein Schauglas für die Reinigungsflüssigkeit vorgesehen, das von der Reinigungsflüssigkeit hinter dem Filter bespült ist, so daß der Zustand der dem Saugkopf erneut zugeführten Reinigungsflüssigkeit überprüfbar ist. In der zum Saugkopf führenden Leitung für die Reinigungsflüssigkeit kann ein Druckregler liegen, von dem eine Rückführleitung in den Tank führt. Weiters kann in dieser Leitung eine Heizung vorgesehen sein, um die aufgebrachte Reinigungsflüssigkeit zu erwärmen.According to the invention, a sight glass for the cleaning liquid is expediently provided on the tank connected to the suction line and is flushed with the cleaning liquid behind the filter, so that the state of the cleaning liquid which is again supplied to the suction head can be checked. A pressure regulator can be located in the line leading to the suction head for the cleaning liquid, from which a return line leads into the tank. Furthermore, a heater can be provided in this line in order to heat the applied cleaning liquid.

In der Zeichnung ist der Erfindungsgegenstand an Hand eines Ausführungsbeispieles schematisch veranschaulicht. Fig.1 zeigt eine Übersicht über die Vorrichtung, Fig.2 den Saugkopf derselben in größerem Maßstab in Schnitt.In the drawing, the subject of the invention is illustrated schematically using an exemplary embodiment. Fig.1 shows an overview of the device, Fig.2 the suction head of the same in a larger scale in section.

Die Vorrichtung hat einen auf Rädern 1 verfahrbaren Tank 2 für die Reinigungsflüssigkeit, deren Flüssigkeitsspiegel im Tank 2 mit 3 angedeutet ist. Durch einen Elektromotor 4 wird im Tank 2 oberhalb des Flüssigkeitsspiegels 3 ein Vakuum, z.B. mittels eines üblichen Saugventilators, erzeugt, welches Vakuum in einer Absaugleitung 5, vorzugsweise einem Schlauch, wirkt, an die ein Saugkopt 6 angeschlossen ist. Vom Motor 4 wird ferner eine sweckmäßig als Membranpumpe ausgebildete Pumpe 7 angetrieben, die aus dem Tank 2 Reinigungsflüssigkeit über eine Ansaugleitung 8 ansaugt und über eine Leitung 9 Reinigungsflüssigkeit unter Druck dem Saugkopf 6 zuführt. Im Tank 2 ist in Abstand von seinem Boden ein horizontalliegendes Filter 10, zweckmäßig ein auswechselbares Membranfilter mit entsprechend gewählter Porengröße eingebaut, wobei die Ansaugleitung 8 unterhalb dieses Filters 10 vom Tank 2 wegführt, so daß lediglich reine Flüssigkeit in die Ansaugleitung 8 eintreten kann. Der Zustand dieser Flüssigkeit ist durch ein Schauglas 11 überprüfbar, welches ebenfalls unterhalb des Filters 10 vom Tank 2 außerhalb desselben hochsteigt und oben an den oberhalb des Flüussigkeitsspiegels 3 liegenden Unterdruckraum 12 angeschlossen ist. Die Leitung 9 kan innerhalb der Absaugleitung 5 geführt sein, z.B. als Druckschlauch. In dieser Leitung 9 liegt ein Druckregler 13, an welchen ein Druckanzeigegerät 14 angeschlossen ist, das den in der Leitung 9 herrschenden Druck anzeigt. Vom Druckregler 13 führt eine Rückführleitung 15 für allfällige übermäßig geförderte Reinigungsflüssigkeit zum Tank 2 zurück. Ferner kann in der Leitung 9 eine Heizung 16 zur Erwärmung der Reinigungsflüssigkeit vorgesehen sein, zweckmäßig ein elektrischer Heizwiderstand, welcher über Leitunger 17 angespeist wird.The device has a tank 2 for the cleaning liquid which can be moved on wheels 1 and whose liquid level in the tank 2 is indicated by 3. A vacuum is generated in the tank 2 above the liquid level 3 by an electric motor 4, for example by means of a conventional suction fan, which vacuum in a suction line 5, preferably a hose, to which a suction head 6 is connected. The motor 4 also drives a pump 7, which is designed as a diaphragm pump and draws cleaning liquid from the tank 2 via a suction line 8 and feeds cleaning liquid under pressure to the suction head 6 via a line 9. A horizontal filter 10, expediently a replaceable membrane filter with a correspondingly selected pore size, is installed in the tank 2 at a distance from its bottom, the suction line 8 leading below this filter 10 away from the tank 2, so that only pure liquid can enter the suction line 8. The state of this liquid can be checked through a sight glass 11, which likewise rises from the tank 2 below the filter 10 and is connected at the top to the vacuum chamber 12 located above the liquid level 3. The line 9 can be guided within the suction line 5, for example as a pressure hose. In this line 9 there is a pressure regulator 13, to which a pressure indicator 14 is connected, which displays the pressure prevailing in line 9. A return line 15 leads from the pressure regulator 13 back to the tank 2 for any excessively pumped cleaning liquid. Furthermore, a heater 16 for heating the cleaning liquid can be provided in the line 9, expediently an electrical heating resistor which is fed in via line 17.

Ferner treibt der Motor 4 eine Hydraulikpumpe 18 an, von der eine Druckleitung 19 zum Saugkopf 6 und eine Rückleitung 20 von diesem zurückführt. Auch diese beiden Leitungen können, z.B. in Form von Druckschläuchen, innerhalb der Absaugleitung 5 angeordnet sein. In der Druckleitung 19 liegt ein Dreiwegeventil 21, durch welches ein teilweiser oder völliger Kurzchluß zwischen den beiden Leitungen 19,20 erzielbar ist, so daß die Menge der in der Druckleitung 19 zum Saugkopf 16 fließenden Flüssigkeit nach Wahl einstellbar ist. Dies dient dazu, die Drehzahl eines im Saugkopf 6 untergebrachten Hydraulikmotors 22 (Fig.2) zu regeln, der zum Drehantrieb zweier ein Wisch- bzw. Bürstorgan 23 bilbender Bürstenringe 24,25 dient. Hiezu ist jeder der beiden Bürstenringe 24,25 in einer Aufnahmen 26 bzw.27 gehaltert, zweckmäßig eingeklemmt, wobei diese beiden Aufnahmen 26,27 in Form von mit U-Profil ausgebildeten Schienen kreisringförmig um die mittige Achse 28 des Saugkopfes 6 umlaufen, und zwar in einander entgegengesetzter Drehrichtung. Hiezu tragen die Aufnahmen 26,27 nach oben abstehende Stege 29,30, die innen bzw. außen mit Zahnkränzen 31 bzw. 32 versehen sind, die beide mit einem Ritzel 33 kämmen, das auf die Abtriebswelle 34 des Hydraulikmotors 22 drehfest aufgesetzt ist. Die beiden Stege 29,30 tragen an der jeweils dem Zahnkranz 31 bzw.32 abgewendeten Seite Kugellager 35 zur Lagerung an einer äußeren bzw. inneren Lagerhülse 36 bzw.37. Beide Lagerhülsen 36,37 sind auf das Gehäuse 38 des Saugkopfes 6 in Form von Manschetten aufgesteckt und durch Schrauben 39 gesichert. Das Gehäuse 38 trägt innen einen Flansch 40 zur Abstützung und Halterung des Hydraulikmotors 22, an den die Druckleitung 19 und die Rückleitung 20, insbesondere in Form von Druckschläuchen, mittels geeigneter Nippel od.dgl. angeschlossen sind. In den Saugkopf 6 mündet ferner die Leitung 9 für die zuzuführende Reinigungsflüssigkeit. Die Leitung 9 ist an eine Ringleitung 41 angeschlossen, welche sich zumindest über einen Großteil des Umfanges des Saugkopfes 6 erstreckt und von der mehrere Düsen 42 nach unter zur zu reinigenden Oberfläche 43 weisen. Die Düsen 42 münden in einem Ringspalt 44 zwischen den beiden Bürstenringen 24,25 und sprühen dort das unter Druck stehende Wasser-Reinigungsmittel-Gemisch auf die zu reinigende Oberfläche 43 auf. Nach außen kann sich diese Flüssigkeit nicht ausbreiten, da die einerseits durch den äußeren Bürstenring 24 verhindert, anderseits durch die von außen zuströmende, durch die Absaugleitung 5 abgesaugte Luft. Diese Flüssigkeit sickert daher unter dem inneren Bürstenring 25 nach innen durch und wird über die Absaugleitung 5 zusammen mit den von ihr mitgenommenen Verunreinigungen abgesaugt.Furthermore, the motor 4 drives a hydraulic pump 18, from which a pressure line 19 leads to the suction head 6 and a return line 20 from the latter. These two lines can also be arranged within the suction line 5, for example in the form of pressure hoses. In the pressure line 19 there is a three-way valve 21 through which a partial or complete short circuit between the two lines 19, 20 can be achieved, so that the amount of liquid flowing in the pressure line 19 to the suction head 16 can be set as desired. This serves to regulate the speed of a hydraulic motor 22 (FIG. 2) accommodated in the suction head 6, which serves to rotate two brush rings 24, 25 that bilge a wiping or brushing member 23. For this purpose, each of the two brush rings 24, 25 is held in a receptacle 26 or 27, appropriately clamped, these two receptacles 26, 27 in the form of rails formed with a U-profile running in a ring around the central axis 28 of the suction head 6, specifically in opposite directions of rotation. For this purpose, the receptacles 26, 27 have webs 29, 30 projecting upwards, the ones on the inside and outside Sprockets 31 and 32 are provided, both of which mesh with a pinion 33 which is non-rotatably mounted on the output shaft 34 of the hydraulic motor 22. The two webs 29, 30 carry ball bearings 35 on the side facing away from the ring gear 31 and 32, respectively, for mounting on an outer or inner bearing sleeve 36 or 37. Both bearing sleeves 36, 37 are attached to the housing 38 of the suction head 6 in the form of sleeves and secured by screws 39. The housing 38 carries a flange 40 on the inside for supporting and holding the hydraulic motor 22, to which the pressure line 19 and the return line 20, in particular in the form of pressure hoses, by means of suitable nipples or the like. are connected. The line 9 for the cleaning liquid to be supplied also opens into the suction head 6. The line 9 is connected to a ring line 41 which extends at least over a large part of the circumference of the suction head 6 and from which a plurality of nozzles 42 point down to the surface 43 to be cleaned. The nozzles 42 open into an annular gap 44 between the two brush rings 24, 25 and spray the pressurized water / cleaning agent mixture there onto the surface 43 to be cleaned. This liquid cannot spread to the outside, since it is prevented on the one hand by the outer brush ring 24 and on the other hand by the air flowing in from the outside and sucked off through the suction line 5. This liquid therefore seeps in under the inner brush ring 25 and is sucked off via the suction line 5 together with the contaminants carried by it.

Die beschriebene Lagerung der beiden die Bürstenringe 24,25 tragenden Aufnahmen 26,27 im Gehäuse 38, welches aus Metall oder Kunststoff bestehen kann, gewährleistet eine gegenüber Staub und sonstigen Verunreinigungen und auch gegenüber Stößen unempfindliche Lagerung, wobei sowohl die Bürsten als auch die Lagerung nach Abnahme der beiden Lagerhülsen 36,37 mühelos und schnell gewechselt werden können.The described storage of the two receptacles 26, 27 carrying the brush rings 24, 25 in the housing 38, which can be made of metal or plastic, ensures storage that is insensitive to dust and other impurities and also to impacts, with both the brushes and the storage being Removal of the two bearing sleeves 36, 37 can be changed quickly and easily.

Um den Saugkopf 6 leicht führen und auch an vertikalen Flächen bzw. über Kopf anwenden zu können, ist der Saugkopf 6 so bemessen, daß er mit einer Hand führbar ist. Hiezu ist es aus Gründen der Gewichtsersparnis zweckmäßig, den Hydraulikmotor 22 hinsichtlich seines Gewichtes auf ein Minimum zur reduzieren. Hiezu besonders geeignet ist ein Hydraulikmotor, der in der Bauart eines Innenzahnradmotors ausgabildet ist, dessen Innenzahnrad und Gehäuse aus Aluminium bestehen, wogegen der Zahnkranz aus Kunststoff besteht. In das Aluminiumzahnrad ist die hohle Abtriebswelle 34 aus Stahl eingepreßt, die an ihrem Ende das ebenfalls aus Kunststoff ausgebildete Ritzel 33 trägt. Ein solcher Hydraulikmotor kan über geeignete flexible hydraulische Leitungen von der Hydraulikpumpe 18 verläßlich angetrieben werden, wobei mittels des Dreiwegeventils 21 eine einfache Regelung der Drehzal möglich ist. Auch die Menge der über die Düsen 42 zugeführten Reinigungsflüssigkeit läßt sich mittels des einstellbaren Druckreglers 13 regeln. Dies ist wichtig, um die mit der Zeit sinkende Durchflußleistung des Filters 10 auszugleichen. Gegebenenfalls kann die Zufuhr der Reinigungsflüssigkeit mittels des Druckreglers 13 auch gänzlich abgeschaltet werden.In order to easily guide the suction head 6 and also to be able to use it on vertical surfaces or overhead, the suction head 6 is dimensioned such that it can be guided with one hand. For this reason, for reasons of weight saving, it is expedient to reduce the weight of the hydraulic motor 22 to a minimum. A hydraulic motor which is designed in the form of an internal gear motor, the internal gear and housing of which are made of aluminum, while the gear ring of plastic is particularly suitable for this purpose. The hollow output shaft 34 is in the aluminum gear pressed from steel, which carries at its end the pinion 33 also made of plastic. Such a hydraulic motor can be reliably driven by suitable flexible hydraulic lines from the hydraulic pump 18, with the three-way valve 21 making it easy to regulate the speed. The amount of cleaning liquid supplied via the nozzles 42 can also be regulated by means of the adjustable pressure regulator 13. This is important in order to compensate for the decreasing flow rate of the filter 10 over time. If necessary, the supply of the cleaning liquid can also be completely switched off by means of the pressure regulator 13.

Das Gehäuse 38 ist mit einem Anschlußstutzen 45 so ausgebildet, daß er durch einen Steckverschluß an die Absaugleitung 5 anschließbar ist. Ebenso sind die beiden Hydraulikleitungen 19,20 sowie die Leitung 9 für die Reinigungsflüssigkeit mittels leicht trennbarer Anschlüsse vom Saugkopf 6 trennbar, um bei Bedarf den Saugkop gegen eine andere Ausführung auswechseln zu können. Es besteht daher leicht die Möglichkeit, die Vorrichtung, insbesondere den Saugkopfdurchmesser, an die jeweils zu reinigende Fläche anzupassen. Weiters besteht die Möglichkeit, durch Wahl des Materiales des Filters 10 sich an die jeweils verwendete Reinigungsflüssigkeit sowie an die zu erwartenden Verunreinigungen anzupassen.The housing 38 is formed with a connecting piece 45 so that it can be connected to the suction line 5 by means of a plug closure. Likewise, the two hydraulic lines 19, 20 and the line 9 for the cleaning liquid can be separated from the suction head 6 by means of easily separable connections, in order to be able to replace the suction head with another version if necessary. It is therefore easily possible to adapt the device, in particular the suction head diameter, to the surface to be cleaned in each case. Furthermore, there is the possibility, by choosing the material of the filter 10, to adapt to the cleaning liquid used in each case and to the impurities to be expected.

Zwecks Vermeidung einer Verschmutzung der Kugellager 35 und zur Erhöhung der Saugwirkung können zwischen den umlaufenden Aufnahmen 26,27 und den ihnen gegenüberstehenden, feststehenden Bauteilen (Lagerhülsen 36,37) Dichtungen 46,47, insbesondere aus Filz, vorgesehen sein.In order to avoid contamination of the ball bearings 35 and to increase the suction effect, seals 46, 47, in particular made of felt, can be provided between the circumferential receptacles 26, 27 and the fixed components (bearing sleeves 36, 37) opposite them.

Claims (8)

1. A device for cleaning surfaces by sucking off the moistened impurities, with a tank (2) for a cleaning fluid, from which there extends a pipe (9) for feeding the cleaning fluid to a suction head (6), and with a device which is designed to generate the low pressure bringing about the suction and which is connected to the suction head (6) via a flexible suction pipe (5), the tank (2), the pipe (9) and the suction pipe (5) forming a closed circuit for the cleaning fluid which is sucked off together with the impurities and is fed to a filter (10) for separating the impurities, and the suction head (6) carrying an annular wiping and/or brushing member (23) which is driven by a drive mechanism for rotary movement around an axis (28) extending normal to the surface (43) to be cleaned, and the cleaning fluid being applied within tho path of the wiping and/or brushing member (23) which rotates around the intake of the suction pipe (5), characterised in that the wiping and/or brushing member (23) consists of two rings (24, 25) which are arranged concentrically to one another and are driven around the common axis in opposite directions, the cleaning fluid being introduced into the gap (44) between the two rotating rings (24, 25), and in that a hydraulic motor (22) is arranged in the suction head (6) in order to drive the rotary movement of the two rings (24, 25).
2. A device according to Claim 1, characterised in that several nozzles (42) distributed along the periphery of the gap (44) are provided for the introduction of the cleaning fluid, these nozzles (42) being attached to the pipe (9) for the cleaning fluid via a distributor pipe (41).
3. A device according to Claim 1 or 2, characterised in that the pipes (19,20) for the hydraulic motor (22) are provided in the suction pipe (5) in the form of flexible pressure tubes.
4. A device according to Claim 1, 2 or 3, characterised in that a pinion (33) is located on the output shaft (34) of the hydraulic motor (22), which pinion (33) is arranged between two gear rims (31,32) - turned towards one another - of the two rings (24,25) of the wiping and/or brushing member (23), and meshes with these two gear rims (31,32).
5. A device according to Claim 4, characterised in that the two gear rims (31,32) are supported by means of bearings, e.g. ball bearings (35), on bearing sleeves (36,37) which are mounted on the housing (39) of the suction head (6).
6. A device according to any one of Claims 1 to 5, characterised in that an inspection glass (11) for the cleaning fluid is provided on the tank (2), the cleaning fluid behind the filter (10) washing against this inspection glass (11).
7. A device according to any one of Claims 1 to 6, characterised in that a motor (4) is provided for the generation of the low pressure prevailing above the fluid level (3) in the tank (2) and in that a pump (7) for conveying the cleaning fluid to the suction head (6) is also driven by this motor (4), where appropriate, this motor (4) also serving to drive a hydraulic pump (18) which supplies the hydraulic motor (22) arranged in the suction head (6) with pressure fluid.
8. A device according to any one of Claims 1 to 7, characterised in that a regulating member, e.g. a three-way valve (21), is provided in the pressure pipes leading to the hydraulic motor (22) in order to regulate the rotational speed of the hydraulic motor (22).
EP19880908100 1987-10-14 1988-09-28 Device for cleaning surfaces Expired - Lifetime EP0380524B1 (en)

Applications Claiming Priority (2)

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AT271487A AT388863B (en) 1987-10-14 1987-10-14 DEVICE FOR CLEANING SURFACES
AT2714/87 1987-10-14

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EP0380524A1 EP0380524A1 (en) 1990-08-08
EP0380524B1 true EP0380524B1 (en) 1992-08-05

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AT (1) AT388863B (en)
DE (1) DE3873543D1 (en)
WO (1) WO1989003191A1 (en)

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Publication number Priority date Publication date Assignee Title
ATA244690A (en) * 1990-12-04 1993-11-15 Abbrederis Heinrich DEVICE FOR CLEANING SURFACES
GB2257901B (en) * 1991-07-20 1994-10-26 Atomic Energy Authority Uk Cleaning device
ATA238091A (en) * 1991-11-29 1994-05-15 Abbrederis Heinrich DEVICE FOR TREATING, IN PARTICULAR CLEANING, OF FLAT SURFACES
DE4200064C2 (en) * 1992-01-03 1995-07-06 Hako Gmbh & Co Mobile wet cleaning machine
CN104961352B (en) * 2015-07-15 2017-08-25 深圳市创思泰科技有限公司 Disk is smeared in rotation with left and right shower nozzle

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US2021608A (en) * 1935-08-05 1935-11-19 Continental Car Na Var Corp Scrubbing brush
US2781745A (en) * 1955-03-29 1957-02-19 Forrest L Bailes Hydraulic motor for a scrubbing machine
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US3040350A (en) * 1961-06-12 1962-06-26 Hoover Co Detergent dispensing wheel support for shampoo appliances
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Also Published As

Publication number Publication date
WO1989003191A1 (en) 1989-04-20
ATA271487A (en) 1989-02-15
AT388863B (en) 1989-09-11
DE3873543D1 (en) 1992-09-10
EP0380524A1 (en) 1990-08-08

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