Cleaning device for fast running surfaces, cleaning method and use of cleaning device

Abstract

The invention relates to a cleaning device (1) having at least two cleaning elements (7) which are spaced apart from one another and are rotatable, the cleaning elements (7) having movable bristles (12), and a suction device (2) being arranged between the at least two cleaning elements (7).

Description

[0001] The invention relates to a cleaning device, in particular for the rapid cleaning of surfaces, having at least two cleaning elements which are spaced apart from one another and are movable, for example rotatable, wherein the cleaning elements have movable bristles. Such cleaning devices are widely used in practice.

[0002] The invention also relates to a method for cleaning a contaminated surface. Such a method is known from the prior art.

[0003] The invention also relates to the use of a cleaning device. Such a use is known.

[0004] In the prior art, moving surfaces which are contaminated with dirt particles and have a speed of, for example, 1 m / s or more can usually only be cleaned insufficiently, since the dirt particles tend to adhere. The invention is intended to solve this problem and to eliminate the disadvantages of the prior art.

[0005] The object of the invention is to improve the operating characteristics of a cleaning device, in particular to improve the cleaning of rapidly moving surfaces. This object is achieved by the features of the independent claims. Advantageous design embodiments are specified in the dependent claims.

[0006] It is noted that the features specified individually in the dependent claims can be combined with one another in any technically reasonable manner and define further design embodiments of the invention. Furthermore, the features specified in the claims are explained and interpreted in more detail in the description, in which further preferred design embodiments of the invention are presented.

[0007] In order to achieve this object, the invention proposes the features of claim 1. In particular according to the invention, in a cleaning device of the type described at the outset, in order to achieve the above-mentioned object, it is proposed to arrange a suction device between the at least two cleaning elements. As a result, by combining the wiping effect of the cleaning elements with suction, an advantageous cleaning of the contaminated and moving surface can be achieved. This applies in particular to surfaces whose speed is in the range of 10 m / s or more.

[0008] The suction device is located directly between the at least two cleaning elements and is arranged perpendicular to and above the moving surface to be cleaned. The suction device is arranged along the normal vector of the moving surface. By between the at least two cleaning elements it is meant that the suction device is physically located between the at least two cleaning elements. In the prior art, although suction devices are known, the suction devices are not located between the cleaning elements, but are usually located in the head region or in the base region of the cleaning elements.

[0009] The cleaning elements can have movable bristles.

[0010] To achieve this object, the application proposes the features of claim 2. In particular according to the application, in a cleaning device of the type described at the outset, in order to achieve the above-mentioned object, it is proposed that the at least two cleaning elements have different permeabilities. Preferably, the permeabilities are designed for a fluid. Fluids described here are substances which are gaseous or liquid. The fluid can thus flow through the at least two cleaning elements in different ways and targeted cleaning can be carried out. This leads to an increase in the cleaning quality.

[0011] Permeability here means the flowability of the cleaning element, wherein the permeability is indicated in square meters.

[0012] In an advantageous design it can be provided that a transport device is designed, which moves the contaminated surface in a transport direction relative to the at least two cleaning elements. In this case, the speed of the contaminated surface can be 10 m / s or more. Thus, the cleaning capacity of the cleaning device can be increased.

[0013] In an advantageous design it can be provided that the at least two cleaning elements are designed as a brush roll and additionally or alternatively as a brush belt. Thus, the cleaning elements can be provided depending on the situation and the degree of contamination.

[0014] A brush roll is understood to be a cylindrical object which has bristles and can carry out a rolling motion. A brush belt, on the other hand, is similar to a conveyor belt and has a direction of movement which extends along the conveyor belt. The direction of movement of the brush belt is thus transverse, preferably orthogonal, to the transport direction of the transport device. A brush roll, on the other hand, has a direction of movement which extends along the transport direction.

[0015] The contaminated surface can be a wooden surface, a plastic surface, a metal surface, a glass surface or a paper surface.

[0016] In an advantageous design it can be provided that a negative pressure is formed between the at least two cleaning elements. The negative pressure is preferably provided or caused by a suction device. Thus, dirt particles which are separated from the surface can easily be sucked away.

[0017] In an advantageous design it can be provided that the distance of the bristles from the contaminated surface is not constant in a region of the surface. The region of the surface is preferably a lateral region of the surface. This is intended to ensure that the region of the surface is not damaged by the rotating cleaning element or that the rotating cleaning element is not damaged by the lateral region of the surface.

[0018] In particular, the contaminated surface is a band-like surface.

[0019] In an advantageous design it can be provided that the cleaning elements are moved in a movement direction which is arranged transversely, in particular orthogonally, to the conveying direction of the contaminated surface. The bristles of the cleaning elements clean the dirt particles on the contaminated surface by their rotational movement, wherein these dirt particles are subsequently guided between at least two cleaning elements and are sucked away by the suction device. By the transverse arrangement of the conveying direction relative to the movement direction, the cleaning performance of the cleaning elements can be improved.

[0020] In the present application, orthogonal is understood to be an angle of between 85° and 95°. In the present application, transverse means an angle of greater than 0° and less than 90°.

[0021] In an advantageous design it can be provided that one of the at least two cleaning elements has a flow channel which is transverse to the conveying direction of the contaminated surface. Preferably or alternatively, the flow channel is designed transversely to the movement direction of the at least two cleaning elements. The dirt particles can be guided through the flow channel of the cleaning elements, wherein, due to the suction effect of the suction device, a negative Coanda effect can occur. The Coanda effect refers to the various phenomena that a gas jet or liquid flow tends to follow a convex surface rather than breaking away from it and continuing in the initial flow direction.

[0022] In an advantageous design it can be provided that the at least two cleaning elements have the same permeability. This can be advantageous for certain contaminated surfaces, for example. Thus, the flexibility of the cleaning elements relative to the contaminated surface can be improved.

[0023] In an advantageous design it can be provided that the flow channel is formed by bristles of different lengths or by brushless substructures located on the cleaning elements. Thus, the permeability of the cleaning elements can be adapted to the specific circumstances, in particular to the speed and degree of contamination of the contaminated surface.

[0024] In an advantageous design it can be provided that the cleaning elements are operated in an opposite or same direction, in particular wherein the movement direction, for example the already mentioned movement direction, of the cleaning elements is in the same direction or in the opposite direction. In this case, the setting of the movement direction depends, for example, on the degree of contamination and / or the type of material to be cleaned.

[0025] In an advantageous design it can be provided that a scraper is designed. The scraper is preferably arranged at the turning point of the cleaning elements. Additionally or alternatively, the scraper contacts the cleaning elements, in the process scraping off dirt particles from the cleaning elements, in particular the bristles. Thus, by means of the scraper, the cleaning elements can be cleaned and it can be prevented that dirt particles only circulate in the movement direction of the cleaning elements.

[0026] In an advantageous design it can be provided that the squeegee has a separate suction unit which sucks away the dirt particles removed from the squeegee. In this case, the suction unit can be designed separately or as part of the suction device. Thus, it is prevented that dirt particles adhere to the bristles and circulate only in the direction of movement.

[0027] In an advantageous design it can be provided that the at least two cleaning elements have flow channels of different size and permeability. Preferably, the flow channels are arranged transversely to the direction of movement of the cleaning elements, for example the already mentioned direction of movement. Thus, the cleaning elements can be adapted to the type of dirt particles, the material of the contaminated surface and the speed of the conveying device.

[0028] The permeability can be adjusted by the size design and the structural shape of the flow channels. Cleaning elements without flow channels have a lower permeability than cleaning elements with flow channels.

[0029] In an advantageous design it can be provided that the flow channels are designed linearly. This can have a positive effect on the mobility of the dirt particles by the cleaning elements.

[0030] In an advantageous design it can be provided that the angle a between the longitudinal axis of the flow channels and the width of the cleaning elements is between 0° and 60°. This design of the angle has proven particularly advantageous in experiments.

[0031] In an advantageous design it can be provided that the suction device comprises a collection unit for collecting the dirt particles. Thus, the dirt particles can be removed cleverly from the circulation of the cleaning elements and a functional collection is achieved. This applies in particular to larger and heavier dirt particles which are not easily removed by the suction device.

[0032] The collection unit is understood to be a unit in which the concentration of the dirt particles increases and they accumulate within the collection unit and cannot be transported away therefrom. Preferably, the dirt particles are removed from the collection unit artificially, in particular manually. Heavy dirt particles which cannot be sucked away by the suction device are preferably accumulated in the collection unit.

[0033] In an advantageous design it can be provided that the cleaning elements arranged upstream in the conveying direction of the contaminated surface have a higher permeability than the cleaning elements arranged downstream. Thus, the cleaning function can be improved, since the dirt particles can more easily pass through the first cleaning elements but more difficultly through the cleaning elements located therebehind.

[0034] In an advantageous design it can be provided that the size of the angle a mentioned is different for two of the at least two cleaning elements. Thus, the penetration rate of the cleaning elements can be precisely adapted to the cleaning situation. For example, the two cleaning elements can be mirror-inverted relative to one another or the two flow channels can be arranged at different absolute values of the angle.

[0035] In an advantageous design it can be provided that the suction device has a slit opening, the width of which is smaller than the distance of the at least two cleaning elements from one another and through which the dirt particles can be sucked away. Thus, an advantageous circulation or flow can be realized in the suction device, which facilitates the cleaning.

[0036] In an advantageous design it can be provided that the longitudinal extension (LI) of the (single-piece or multi-piece) slit opening mentioned for example for sucking away the dirt particles is greater than half, in particular three quarters, of the length of the at least one cleaning element. Thus, the suction can be realized over the entire extension of the workpiece to be cleaned transverse to its transport direction and / or as evenly as possible.

[0037] The longitudinal extension can be given, for example, by the distance between the ends of the (single-piece) slit or the (multi-piece) slit arrangement forming the slit opening or by the sum of the clear inner dimensions of the (multi-piece) slit arrangement.

[0038] In an advantageous design it can be provided that the suction device has a funnel-shaped base body, the slit opening is formed at the bottom of the funnel-shaped base body and the collecting unit is designed immediately adjacent to the slit opening. Thus, an advantageous flow dynamics can be provided in the base body, which facilitates the removal of the dirt particles.

[0039] Preferably, the bristles are open on the sides.

[0040] In an advantageous design it can be provided that the at least two cleaning elements are arranged mirror-symmetrically on both sides of the contaminated surface. Thus, both sides of the surface can be effectively cleaned.

[0041] In an advantageous design it can be provided that two suction devices are designed, which are arranged mirror-symmetrically on both sides of the contaminated surface. Thus, both sides of the surface can be effectively cleaned.

[0042] In an advantageous design it can be provided that the transport direction of the contaminated surface and the movement direction of the cleaning elements, for example the movement direction mentioned, are arranged transversely, in particular orthogonally, relative to one another. Thus, the cleaning capacity of the cleaning device can be improved, since the dirt particles can be more easily removed from the surface when the movement direction is transverse to the transport direction.

[0043] In an advantageous design it can be provided that the at least two cleaning elements have a stepped structure, wherein in the area in front of the stepped structure the bristles of the cleaning elements are lifted off the contaminated surface. This is particularly advantageous in the edge region of the surface, since this prevents the surface from being damaged or torn due to the rotation of the cleaning elements.

[0044] In order to achieve the above-mentioned objects, according to the application, the features of the dependent claims relating to a method for cleaning a contaminated surface are provided. In particular, in order to achieve the above-mentioned objects, according to the application, in a method of the type described at the outset, it is proposed that dirt particles are guided through at least two cleaning elements of different permeability and movability, wherein the cleaning elements comprise bristles and the dirt particles are sucked away by a suction device located between the at least two cleaning elements. As a result, the cleaning quality can be improved.

[0045] In an advantageous design it can be provided that the at least two cleaning elements clean the dirt particles by means of a scraper, which is in contact with the at least two cleaning elements at the end. As a result, it is possible to prevent dirt particles from adhering in the cleaning elements and circulating only in the direction of movement.

[0046] In an advantageous design it can be provided that the bristles of the cleaning elements are guided out of the cleaning area in order to allow the bristles to self-clean. As a result, it is possible to prevent dirt particles from adhering in the cleaning elements and circulating only in the direction of movement.

[0047] In an advantageous design it can be provided that the dirt particles are deflected in the area between the cleaning elements by the suction device from the conveying direction. In this case, the movement trajectory of the dirt particles is preferably a hyperbolic trajectory. As a result, it is possible to remove the dirt particles from the contaminated surface.

[0048] In an advantageous design it can be provided that the dirt particles are accelerated through the at least two cleaning elements. The dirt particles are preferably accelerated in the direction of the suction device. As a result, a dynamic flow can be achieved, which effectively removes dirt particles adhering to the contaminated surface from the surface.

[0049] In order to achieve the above-mentioned objects, according to the application, the features for the following use are provided: cleaning a moving and contaminated surface and, additionally or alternatively, conveying particles on the surface. In this case, a cleaning device according to one of the above-mentioned features is applied.

[0050] The application will now be described in more detail on the basis of several embodiments, but the application is not limited to these several embodiments. Further variants and embodiments of the application can be obtained by combining the features of the individual or more claims with one another and / or with the individual or more features of the embodiments and / or the aforementioned variants of the devices and methods according to the application. In the drawings: Figure 1 a perspective view of a cleaning device of the prior art; and Figure 2 a perspective view of a cleaning device of the prior art; and Figure 1 a side view of a cleaning device of the prior art; and Figure 3 a side view of a cleaning device according to the present application; and Figure 4 a perspective view of a cleaning device having cleaning elements which are mirror-symmetrical on both sides of the surface; and Figure 5 a detailed view of a cleaning element; and Figure 6 a perspective view of a cleaning device having suction devices which are mirror-symmetrical on both sides of the surface; and Figure 4 a side view of a cleaning device having cleaning elements which are mirror-symmetrical on both sides of the surface; and Figure 7 Figure 6 a side view of a cleaning device having cleaning elements which are mirror-symmetrical on both sides of the surface; and Figure 8 a side view of a cleaning device, wherein the cleaning device comprises more than two cleaning elements which contact mirror-symmetrical on both sides of the contaminated surface, and Figure 9 a perspective view of a cleaning device, wherein the cleaning elements have the same permeability, and Figure 10 a perspective view of a cleaning device, wherein the cleaning elements have different permeabilities.

[0051] In the following description of various embodiments of the application, functionally identical elements are provided with the same reference numerals, even if there are differences in structure or shape.

[0052] For the sake of clarity, not all reference signs are indicated in the drawings, even if these elements are present in the drawings. Identical reference signs, however, indicate functionally and / or structurally identical components and functional units.

[0053] Figure 1 A perspective view of a cleaning device 1 of the prior art is shown. Here, the cleaning device 1 has a suction device 2 which is spaced apart from a surface 3 which is contaminated and moves in a conveying direction 5, dirt particles 4 being present on the surface 3. Figure 1 The cleaning device 1 in the above-described manner is particularly suitable for surfaces 3 which move at a low speed (less than 1 m / s) and in which the dirt particles 4 exert no or only a very small adhesive force on the surface 3.

[0054] Figure 2 A perspective view of a cleaning device of the prior art is shown. Here, the cleaning device 1 has a suction device 2 which is spaced apart from a surface 3 which is contaminated and moves in a conveying direction 5, dirt particles 4 being present on the surface 3. Figure 1 ​Figure 1 shows a side view of a cleaning device 1 according to the application. The funnel-shaped suction device 2 is shown in more detail, wherein the suction device 2 has a slit opening 6 through which dirt particles 4 are guided. When the speed of the surface 3 is high, in particular when the speed is greater than 1 m / s, and the dirt particles 4 adhere to the surface 3, so that not all dirt particles 4 can be removed from the surface 3. This can be disadvantageous in the case of a clean surface 3 being required, for example, for a subsequent process.

[0055] The surface 3 can be made of wood, paper, metal, glass or plastic.

[0056] Figure 3 Figure 1 shows a side view of a cleaning device 1 according to the application. The cleaning device 1 has two cleaning elements 7, which are designed as a bristle band 8. The bristle band 8 comprises bristles 12. The bristles 12 are movable. Between the cleaning elements 7 is a suction device 2, which has a slit opening 6 through which dirt particles 4 removed by the cleaning elements 7 can be sucked. The suction device 2 is perpendicular to and above the surface 3. The cleaning elements 7 have the same permeability. In an alternative embodiment, the cleaning elements 7 have different permeabilities, wherein the cleaning elements 7 upstream in the conveying direction 5 have a higher permeability. Here, "permeability" means the flowability of the cleaning elements. The movement direction 9 of the cleaning elements 7 is either into the plane of the paper (indicated by the square) or out of the plane of the paper (indicated by the circle). In the specific example, the movement direction 9 is counter-rotational. In an alternative embodiment, the movement direction can be co-rotational. Next to the slit opening 6 is a collection unit 10, in which dirt particles 4 can be collected. This is particularly advantageous in the case of dirt particles 4 having a large mass, which cannot be completely sucked away by the suction device 2 and remain in the suction device 2. Dirt particles 4 having a large mass and thus not being able to be sucked away by the suction device accumulate in the collection unit 10. In the collection unit 10, the concentration of the dirt particles 4 increases. Preferably, the collection unit 10 is emptied manually, i.e. by hand. Alternatively, the collection unit 10 can be emptied automatically by means of a discharge device (not shown here).

[0057] Figure 4A perspective view of a cleaning device 1 is shown, which has cleaning elements 7 arranged in a mirror-symmetrical manner on both sides of a surface 3. The arrows symbolize the movement of the contaminated surface 3 in the conveying direction 5. In the specific example, the four cleaning elements 7 are designed with a stepped structure 13, wherein the cleaning elements 7 have the same permeability. In an alternative embodiment, the cleaning elements 7 located upstream in the conveying direction 5 have a higher permeability. As a result, the dirt particles 4 can be effectively sucked away by the bristle belt 8 and accelerated in the direction of the suction device 2 (not shown here). In the specific example, the movement directions 9 of the cleaning elements 7 are opposite. In an alternative embodiment, the movement directions 9 of the cleaning elements 7 can be in the same direction.

[0058] The different permeabilities of the cleaning elements 7 can be achieved by means of flow channels 11 which are arranged transversely to the direction of movement 9 of the cleaning elements 7 and are preferably designed in a rectilinear manner.

[0059] Figure 5 A detailed view of a cleaning element 7 is shown. The cleaning element 7 has a stepped structure 13, wherein the bristles 12 of the cleaning element 7 are lifted off the soiled surface 3 in the region in front of the stepped structure 13 in the direction of movement 9. This is to ensure that the cleaning element 7 does not damage the surface 3 during operation. In the specific example, the surface 3 is shown as a line.

[0060] Figure 6 Shown Figure 4 Perspective view of a cleaning device 1 with a suction device 2 positioned mirror-symmetrically on either side of a surface 3. The suction device 2 has a slit opening 6 through which dirt particles 4 are sucked in. A collection unit 10 is designed next to the slit opening 6. The largest arrow symbolizes the conveying direction 5 of the contaminated surface 3, while the medium-sized arrows symbolize the movement direction 9 of the cleaning element 7. The smallest arrows indicate the movement paths of the dirt particles 4 within the suction device 2. In this case, the movement direction 9 is transverse to the conveying direction 5.

[0061] Figure 7 Shown Figure 6 Side view of a cleaning device 1. The cleaning elements 7 arranged upstream in the conveying direction 5 have a higher permeability than the cleaning elements 7 arranged downstream. The different permeabilities of the cleaning elements 7 can be achieved by flow channels 11, which are arranged transversely to the direction of movement 9 of the cleaning elements 7 and are preferably designed to be linear. The cleaning device 1 is arranged in a mirror-symmetrical manner on both sides of the contaminated surface 3.

[0062] Figure 8A side view of the cleaning device 1 is shown, wherein the cleaning device 1 comprises more than two cleaning elements 7, which contact mirror-symmetrically on both sides of the contaminated surface 3. The cleaning elements 7 arranged upstream in the conveying direction 5 run counter to one another. The downstream cleaning elements 7 likewise run counter to one another. The suction device 2 is arranged between the cleaning elements 7. Figure 8 A total of eight cleaning elements 7 are shown. The dirt particles 4 are sucked away on a hyperbolic movement trajectory and into the suction device 2.

[0063] Figure 9 A perspective view of the cleaning device 1 is shown, wherein the cleaning elements 7 have the same permeability. The suction device 2 (here shown only symbolically) is arranged between the cleaning elements 7. The permeability of the cleaning elements 7 is achieved by flow channels 11, which are arranged transversely to the movement direction 9 of the cleaning elements 7 and are preferably designed as straight lines. The cleaning elements 7 designed as bristle strips 8 are either homodromous or antipodal. The flow channels 11 are formed by bristles 12 of different lengths or by brushless substructures. The homodromy or antipodality of the cleaning elements 7 is determined by the surface 3 to be cleaned, the dirt particles 4 and the degree of dirt. The suction device 2 is arranged perpendicularly above the surface 3 to be cleaned. The suction device 2 is arranged along the normal vector of the surface 3.

[0064] The arrow of the movement direction 9 serves to illustrate both cases: homodromous cleaning elements 7 and antipodal cleaning elements 7.

[0065] Figure 10 A perspective view of the cleaning device 1 is shown, wherein the cleaning elements 7 have different permeabilities. The cleaning elements 7 are designed as bristle strips 8. The cleaning elements 7 arranged upstream in the conveying direction 5 have a higher permeability than the cleaning elements 7 arranged downstream. In this case, the downstream cleaning elements 7 are designed as full-bristle bodies and do not have flow channels 11. The cleaning elements 7 can be designed antipodally or homodromously. The antipodality or homodromy of the cleaning elements 7 is determined by the surface 3 to be cleaned, the dirt particles 4 and the degree of dirt.

[0066] In Figure 7 and Figure 8 It can be seen that the suction device 2 has a slit opening 6, the width B1 of which is smaller than the spacing B2 between at least two cleaning elements 7, and through which the dirt particles 4 can be sucked away. It can also be seen that the longitudinal extension L1 of the slit opening 6 is greater than half, in particular three quarters, of the length L2 of at least one cleaning element 7. In this case, the longitudinal extension L1 is measured from the beginning to the end of the slit opening 6, without taking interruptions into account.

[0067] In a cleaning device 1 having at least two cleaning elements 7 spaced apart from each other and rotatable, wherein the cleaning elements 7 have movable bristles 12, it is proposed to arrange a suction device 2 between the at least two cleaning elements 7.

[0068] List of reference signs 1 cleaning device 2 suction device 3 surface 4 dirt particles 5 conveying direction 6 slit opening 7 cleaning element 8 bristle band 9 movement direction 10 collection unit 11 flow channel 12 bristle 13 step structure L1 longitudinal extension L2 length B1 width B2 spacing

Claims

1. A cleaning device (1) having at least two cleaning elements (7) which are spaced apart from one another and are movable, in particular rotatable, wherein: The cleaning element (7) has movable bristles (12), It is characterized by: The suction device (2) is arranged between the at least two cleaning elements (7).

2. A cleaning device (1), in particular a cleaning device according to claim 1, having at least two cleaning elements (7), which are spaced apart from one another and are movable, in particular rotatable, wherein: The cleaning element (7) has movable bristles (12), It is characterized by: The at least two cleaning elements (7) have different permeabilities, in particular different permeabilities to the fluid.

3. The cleaning device (1) according to claim 1 or claim 2, characterized in that A transport device (5) is provided which moves the contaminated surface (3) relative to the cleaning element (7) in a transport direction (5).

4. Cleaning device (1) according to any one of the preceding claims, characterized in that The at least two cleaning elements (7) are designed as bristle rollers and / or bristle belts (8).

5. Cleaning device (1) according to any one of the preceding claims, characterized in that A negative pressure is generated between the at least two cleaning elements (7), said negative pressure being caused in particular by the suction device (2).

6. Cleaning device (1) according to any one of the preceding claims, characterized in that The distance between the bristles (12) and the contaminated surface (3) is not constant in the region of the surface (3), in particular in the side regions of the surface (3).

7. Cleaning device (1) according to any one of the preceding claims, characterized in that The cleaning element (7) moves in a movement direction (9) which is arranged transversely, in particular orthogonally, to the conveying direction (5) of the contaminated surface (3).

8. Cleaning device (1) according to any one of the preceding claims, characterized in that One of the at least two cleaning elements (7) has a flow channel (11) which is transverse to the conveying direction (5) of the contaminated surface (3) and / or transverse to the movement direction (9) of the at least two cleaning elements (7).

9. Cleaning device (1) according to any one of the preceding claims, characterized in that The at least two cleaning elements (7) have the same permeability.

10. Cleaning device (1) according to any one of the preceding claims, characterized in that The flow channel (11) is formed by bristles (12) of different lengths or by a bristle-free substructure.

11. Cleaning device (1) according to any one of the preceding claims, characterized in that The cleaning elements (7) are operated in a counter-directional or unidirectional manner, in particular wherein the movement directions (9) of the cleaning elements (7) are unidirectional or counter-directional.

12. Cleaning device (1) according to any one of the preceding claims, characterized in that A scraper is provided, in particular, the scraper is arranged at a turning point of the cleaning element (7) and / or is in contact with the cleaning element (7) and scrapes dirt particles (4) off the cleaning element (7), in particular the bristles (12).

13. Cleaning device (1) according to any one of the preceding claims, characterized in that The scraper has a separate suction unit which sucks away the dirt particles (4) scraped off the scraper.

14. Cleaning device (1) according to any one of the preceding claims, characterized in that The at least two cleaning elements (7) have flow channels (11) of different sizes and permeabilities, in particular, wherein the flow channels (11) are arranged transversely to the movement direction (9) of the cleaning elements (7).

15. Cleaning device (1) according to any one of the preceding claims, characterized in that The flow channel (11) is designed to be linear.

16. Cleaning device (1) according to any one of the preceding claims, characterized in that The angle α between the longitudinal axis of the flow channel (11) and the width of the cleaning element (7) is between 0° and 60°.

17. Cleaning device (1) according to any one of the preceding claims, characterized in that The suction device (2) comprises a collecting unit (10) for collecting dirt particles (4).

18. Cleaning device (1) according to any one of the preceding claims, characterized in that Cleaning elements (7) arranged upstream in the conveying direction (5) of the contaminated surface (3) have a higher permeability than cleaning elements (7) arranged downstream.

19. Cleaning device (1) according to any one of the preceding claims, characterized in that The angle α between the longitudinal axis of the flow channel (11) and the width of the respective cleaning element (7) of the at least two cleaning elements (7) is of different sizes.

20. Cleaning device (1) according to any one of the preceding claims, characterized in that The suction device (2) has a slit opening (6), the width (B1) of the slit opening (6) is smaller than the distance (B2) between the at least two cleaning elements (7), and the dirt particles (4) are sucked away through the slit opening (6), and / or the slit opening (6) designed for sucking away the dirt particles (4) has a longitudinal extension (L1), which is greater than half, in particular three quarters, of the length (L2) of at least one cleaning element (7).

21. Cleaning device (1) according to any one of the preceding claims, characterized in that The suction device (2) has a funnel-shaped base body, the slit opening (6) is formed at the bottom of the funnel-shaped base body, and the collecting unit (10) is designed to be adjacent to the slit opening (6).

22. Cleaning device (1) according to any one of the preceding claims, characterized in that The at least two cleaning elements (7) are arranged in a mirror-symmetrical manner on both sides of the contaminated surface (3).

23. Cleaning device (1) according to any one of the preceding claims, characterized in that Two suction devices (2) are designed and arranged in a mirror-symmetrical manner on both sides of the contaminated surface (3).

24. Cleaning device (1) according to any one of the preceding claims, characterized in that The conveying direction (5) of the soiled surface (3) and the movement direction (9) of the cleaning element (7) are arranged transversely, in particular orthogonally, to one another.

25. Cleaning device (1) according to any one of the preceding claims, characterized in that The at least two cleaning elements (7) have a stepped structure (13), wherein the bristles (12) of the cleaning elements (7) are lifted off the soiled surface (3) in the region in front of the stepped structure (13).

26. A method for cleaning a contaminated surface (3), in particular wherein a cleaning device (1) according to any one of claims 1 to 25 is provided, wherein: Dirt particles (4) are guided through at least two movable cleaning elements (7) of different permeability, wherein the cleaning elements (7) comprise bristles (12), and the dirt particles (4) are sucked away by a suction device (2) located between the at least two cleaning elements (7).

27. The method according to claim 26, characterized in that The at least two cleaning elements (7) clean the dirt particles (4) by means of a scraper, which is in contact with the at least two cleaning elements (7) at the end.

28. The method according to any one of the preceding claims, characterized in that The bristles (12) of the cleaning element (7) are guided out of the cleaning area so that the bristles can perform self-cleaning.

29. The method according to any one of the preceding claims, characterized in that The dirt particles (4) are deflected by the suction device (2) from the conveying direction (5) in the region between the cleaning elements (7), in particular, the movement path being a hyperbolic path.

30. The method according to any one of the preceding claims, characterized in that Method for accelerating dirt particles (4) through the at least two cleaning elements (7), in particular in the direction of the suction device (2), characterized in that the dirt particles (4) are accelerated through the at least two cleaning elements (7).

31. Use of a cleaning device (1) according to any one of claims 1 to 25 for cleaning a moving and contaminated surface (3) and / or for transporting particles on a surface (3).

Images