EP2256250B1 - Vehicle to take filler material from a surface - Google Patents

Description

The invention relates to a mobile device for removing product from a surface, wherein the device comprises a removal device and a suction device with a filter element.

Sports fields, and here preferably sports grounds with an artificial turf, have an introduced into the artificial turf covering filling material that influences the characteristics of the artificial turf or determines and adapts to the respective sports to be performed on the sports field. Over time accumulate on the surface, and in particular on the artificial grass pitch, impurities and other particles, such as dusts, which combine with the contents and thereby adversely affect the characteristics of the sports field. It is therefore intended to remove the contents at regular intervals from the artificial turf pitch, rid of particles and adhering dirt and then bring back into the sports field.

It is known, as described above, to use mobile devices that ablate the contents of the sports field and thereby also absorb the particles contaminating the filling. Corresponding devices have for this purpose a removal device, which enter the contents and the particles in a mobile device. In the device is then a preparation of the contents and the re-entry of the cleaned contents in the sports field area. Devices are also known which, in addition to the removal device, comprise a suction device which has a filter element. The suction device is used to deposit particles from the recorded mixture and supply the filter element.

A disadvantage of the known suction devices and in this case particularly of the filter elements used therein, that they lose their function after a short time use on loaded with large Staubbeziehungsweise particle amounts of places. This results from caking or adhesion of particles on the surface of the filter element and the formation of a so-called filter cake. This successively reduces the filter performance of the filter elements.

Conventional devices must therefore be maintained in regular, depending on the amount of dust may be quite short intervals. In this maintenance, the replacement of the clogged filter element is carried out against a new filter element.

This is considered to be disadvantageous because the replacement of the filter element high costs for the replacement or the new filter element are connected and the frequent replacement involves a lot of work and the associated costs.

The document DE 44 08 247 A1 shows a cleaning device for sports flooring with litter, preferably in the form of sand, which is designed such that hardened or encrusted surface layers can be broken so that the brush roller can penetrate. In addition, it should be possible that a wet surface layer is replaced by a dry layer. The cleaning device furthermore has a sieve for screening out larger foreign particles than the grain sizes of the litter.

The document DE 88 04 130 shows a machine for cleaning artificial turf with a collection box designed as a sieve. Heavier particles of sand and granules fall back onto the sieve and through the sieve onto the artificial turf. Lighter impurities are taken along by the air flow and deposited in the filter.

Object of the present invention is to provide a mobile device of the type mentioned, which has a higher compared to known from the prior art devices availability, ie lower maintenance times.

To achieve this object, the invention is based on a mobile device, as described above, and suggests that the filter element is designed to be self-cleaning. Due to the self-cleaning design of the filter element, the maintenance and cleaning intervals of the device are extended. In addition, filters must be replaced less frequently. Overall, these measures lead to a reduced service life of the device and increase its operational readiness and availability. With the linkage of the service life and the reduced maintenance costs due to less frequent filter changes, a significant increase in the efficiency of the device and a faster armortization of the acquisition costs are ensured. The reduced maintenance costs less operating costs, which in turn contributes to financial relief of the operator of the device.

In an advantageous development of the device according to the invention it is provided that the suction device sucks the particles directly from the surface, that is, for example, from a sports field or artificial turf, or is sucked into the device registered mixture of filling material and particles after entry into the device , Here, the proportion of particles is removed from the mixture, which has a lower density, a lower weight and thus

Floating ability has. Only then can the extraction be ensured by means of air flow. At the same time the proportion of particles or particles can be selected via the strength of the air flow, which can / should be separated from the suction air flow by the filter or filter element provided in the suction device.

In addition to filling material and particles and dirt, such as waste, leaves or other debris are registered by the removal device in the device. In the interior of the device, therefore, preferably a sieve is arranged, onto which the filling material, the adhering particles and other contaminants, which are transported by the removal device into the interior of the mobile device, are thrown. The sieve causes a separation of the contents of the other components of the mixture. According to the invention it is provided that a preferred embodiment of the device comprises a sieve which is arranged inclined in or against the direction of travel or oriented horizontally. Moreover, it is considered favorable if the sieve is detachably or firmly arranged in the device. In the case of a detachable arrangement of the sieve in the device, this can be exchanged, if necessary, for a sieve with a correspondingly changed hole width, and the device can thus be adapted for use with different filling material. In addition, the sieve can also be exchanged for a plate and the device can then be used to remove the contents. However, if the sieve is fixedly arranged in the device, then it proves to be advantageous if the sieve has a variably adjustable hole width, in order to ensure an adaptation to the corresponding product to be sorted. It proves to be recommendable if the variably adjustable hole width is manually adjustable. This can be done for example via a lever arranged on the housing. In addition, in another embodiment, it is also conceivable that the hole width automatically is adjustable. For this purpose, the device then corresponding actuators, such as actuators and / or a controller.

However, the main focus of the device according to the invention lies in the provision of a self-cleaning filter element. Preferably, the filter element is cylindrical, annular or substantially rectangular. Such a design of the filter element allows a variety of design options for accommodating the filter element in the mobile device. Also conceivable and considered favorable is the design of the filter element as a cartridge or as a completely removable capsule. Even if the proposed filter element proves to be much longer lasting than conventional filter elements due to its self-cleaning function, an exchange of the filter element must take place at corresponding time intervals. As low proves it in this context, if the filter element is designed separable, so that after disassembly, only the filter medium can be removed from the filter element and replaced. This leads to a further reduction in maintenance costs and waste.

In order to assist the self-cleaning of the filter element, it is considered advantageous if the filter element is designed so that it can be subjected to vibration. As a result of the application of vibration, dust adhering to the filter element or the surface of the filter medium used in each case, adhering particles or a build-up filter cake are shaken off from the surface, resulting in mechanical cleaning of the filter. According to the invention it is provided that the vibration is imparted via a drive unit of the mobile device or a separate drive unit for vibrational loading in the Device is provided. The vibration application may also be mediated via a main drive of the mobile device. This separate drive can be made smaller in relation to the main drive or be coupled via a transmission to the main drive. It is also conceivable that the separate drive is powered by its own energy source. In this context, for example, an electric motor for the vibration loading of the filter element may be provided, while the main drive of the device comprises an internal combustion engine. It is also possible that an eccentrically acting on the filter element, connected to the drive or the main drive lever is provided for Vibrationsbeaufschlagung. Due to the eccentric arrangement, the vibration of the filter element takes place without an uneven load of the main drive.

In order to free the particle mixture, with which the filter is confronted, from a multiplicity of particles in advance, a preferred embodiment of the device according to the invention provides that a centrifugal separator is arranged upstream of the filter element. Thus, the Absaugluftstrom is already partially freed from particles in the centrifugal separator and only a significantly reduced particle load applies to the Filterelment. This helps to significantly increase the service life of the filter element. The centrifugal separator can have a separate collecting area for the separated particles. In addition, it is also possible that the separated particles from the centrifugal separator are passed directly into a silo, which is provided in the device.

Associated with the silo is also the end of a screen disposed in the device, which is a conveyance into the device registered large-volume or large-scale contamination causes silo out. As low it will be in this context considered when the sieve is vibration-imparted via the vibration drive or the main drive of the device. The Vibrationsbeaufschlagung of the screen can also be done via an eccentrically articulated on a rotating filter element deflecting lever. The vibration impact of the screen is thus independent of the main drive of the device, which brings a significantly reduced load on the main drive and increased smoothness of the device with it.

It is regarded as favorable if the suction device has a control for the suction air flow or a corresponding control of the suction device is assigned. By controlling the suction air flow, a reversal of the flow direction can be achieved and the suction air flow can thus be introduced into the filter element in order to blow it out. The introduction of the suction air flow into the filter element can take place periodically and thus the blow-out of particles from the filter, in the manner of a known from the fluid filter technique "back-flushing process" take place. It is provided that the air flow is further guided via corresponding flaps, which are provided in the suction device. Through these flaps, a closure of the outlet opening for the suction air flow in the regular operation of the device can be performed. This avoids the escape of particles into the ambient air during the exhausting or blowing out of the filter. The blown out of the filter element particles fall back into the interior of the device and meet where appropriate on a correspondingly arranged baffle, which ensures a supply of the blown particles in a collecting device, for example in a silo. If the filter element is to be blown out by reversing or introducing the suction air flow into the filter element, then a further development of the invention that is regarded as favorable provides that the reversal or introduction of the suction air flow done manually or automatically. A manual introduction of the air flow also means the connection of an external air source. So it is for example possible to clean the device to connect a compressed air line with the device and perform the blowing out of the filter element. If an automatic reversal of the air flow is provided, it can also be program-controlled, for example during a cleaning or maintenance program.

It is considered particularly advantageous if the filter element, which is in particular cylindrical or annular, is arranged on or on a first axis of rotation of the device. It is possible that the axis of rotation is arranged as a continuous axis in the device, or arranged as a two-part stub axle on two sides of the device or at two ends of the filter element. The filter element, which, as previously shown, can also be designed as a capsule or cartridge, is plugged onto the rotation axis or pushed onto it. When removing the filter element, when using a two-part axle, only a part of the axis, conveniently the not engaged with a gear axle part, removed and the filter element to be removed. For this purpose, it proves to be advantageous if the device has a cover surface or at least one side surface, which is designed to be completely or partially detachable from the device. As a result, access to the filter element is ensured and this can be removed very quickly and easily from the device.

It is considered advantageous if the filter element extends over the entire width of the device. As a result, it is achieved that the exhaust air flow also impinges on the filter element distributed over the entire width of the device. As a result, fewer particle conglomerates are formed on only one side or in only one area of the filter element. In addition, it is of course also possible that the filter element extends only over part of the width of the device and is arranged, for example, in a separate housing provided in the housing of the device. It also proves to be advantageous if the filter element has a first, rotating section, which performs a prefiltration of the suction air flow and deposits coarse components from the suction air flow. The correspondingly pretreated suction air flow then impinges in a fixed second region of the filter element, where it is freed from the substantially smaller particles which are still present in the pre-filtered air flow. In this case, only the rotating area may be self-cleaning, while the fixed portion of the filter element is replaced regularly. Of course, it is also possible to form both parts of the two-part or multi-part filter element self-cleaning. Here, for example, the rotating part is cleaned due to the centrifugal force acting on the deposited particles, while the fixed part is formed to be vibrated, for example.

An advantageous development of the device according to the invention provides that a guide channel is provided for the suction air flow. Via a corresponding guide channel, which may be formed as a rail or pipe, the suction air flow will be selectively brought to the filter. It is then possible to use smaller filters. Also advantageous is the use of a guide channel in the already proposed cleaning of the filter by blowing, because here on the one hand, a directed impact of the air flow can be ensured on the filter element and on the other hand, the exiting particles are directed away from the filter.

A further embodiment of the device according to the invention provides that the filter element is arranged pivotably in the device. By pivoting the filter element this can be pivoted into the exhaust air flow or swung out of this. About this possibility of inclusion or swinging it is achieved that the filter element is applied only periodically with the suction air flow. Thus, the mobile device is suitable, for example, for use in rooms, since here the dust load of the extracted air must be significantly reduced, while in an extraction of outdoor areas, the emerging from the device exhaust air may have a higher dust load. It is provided in this context that the pivoting of the filter element is performed automatically or manually. Again, it makes sense to provide appropriate operating lever on the device or insert menu items in an automatic device control that control the automated pivoting of the filter element via respective actuators.

The device according to the invention has various areas of use. Along with this, the filling material which has been introduced or sucked into the device and the particles loading the filling material are designed differently. In order to meet the particular extracted mixture of particles, a plurality of exchangeable filter media is used, from which the filter element can be formed. Depending on the desired filter performance and the particle spectrum to be deposited, cotton, polyester fleece, polypropylene or cellulose, for example, can be used as the filter medium. Since these are flexible materials, a corresponding folding of the filter medium can be carried out particularly easily and thus the effective filter surface can be significantly increased.

In addition to the use of a flexible filter medium, it is also possible to form the filter of a ceramic or ceramic-like material or of metal. In addition, the various filter media can also be processed into fabrics or mats, wherein the corresponding fabrics or mats are formed from one or more of the filter media. In addition to the selection of a suitable filter medium, it is also possible to equip the filter medium or the filter element with a surface coating, which on the one hand represents an adaptation to the cleaning environment, on the other hand also supports the self-cleaning of the filter element. Suitable coatings here are in particular a moisture-resistant, an antistatic or an anti-adhesive coating. In this case, in particular the antistatic and the anti-adhesive coating causes particles which are brought to the filter element in the exhaust air flow, fall out of the filter element after the end of the Saugbeaufschlagung and thus do not pollute or pollute.

In a further advantageous embodiment of the mobile device according to the invention it is provided that the filter element is designed to be dismantled and an exchange of the filter medium can be carried out in an installed state of the filter element. It is considered favorable in this context if only part of the filter element is removed and thus releases the filter medium. It may then be the replacement of the filter medium, with the result that the maintenance and repair of the filter element can be performed much faster and the costs associated with maintenance can be reduced.

Already above various filter media have been presented, which are partially rigid, partially flexible. In order to form a filter element, it is considered favorable if the filter medium for forming lamellae, zigzag or wavy folded. By appropriate arrangement of the filter medium in the form of waves or fins, the active surface of the filter can be significantly increased and the filter performance can be improved. As low is considered in this context, when the lamellae or waves are arranged annularly or radially around the first axis of rotation or extend radially away from this. In addition to the use of a rotating filter element, it goes without saying that it is possible to form a fixed filter element with lamellae which are arranged in the shape of a ring or a ray or in a plane.

According to the invention, a stripping element is provided which engages or engages the filter element. By the attack or engagement of the stripping element takes place a vibration or pressurization of the filter element and caking or accumulation of particles or filter cake on the filter medium are so dissolved and removed from the filter element. The particles or filter cake dissolved by the wiping element fall out of the filter element and into the device. There are suitable conveying or guiding devices that accomplish a transport of the particles into a collecting device, such as a silo. It is considered favorable if the wiping element is designed as a strip arranged essentially transversely to the direction of travel of the device or parallel to the first axis of rotation or a longitudinal axis of the filter element. In addition, there is also the possibility that the stripping element has one or more fingers, bolts or pins which engage in the filter element or act on this concern and the filter element so. Due to the design of the stripping element as a bar, the highest possible loading of the filter element can be done since
the strip can be designed so that it engages over the entire length of the filter element at this, rests or projects into this. The stripping element is preferably designed such that it continuously engages or engages the filter element. In addition, of course, there is also the possibility that only intermittent engagement of the stripping takes place, for example, in connection with cleaning cycles or within appropriate time intervals during use of the device. It is thus carried out on the stripping a continuous or periodic pressure or vibration of the filter element. In order to perform the loading of the filter element by the stripping, it is considered advantageous if a manual or automatic control is provided for the engagement or attack of the stripping on or in the filter element. About this control, which may be formed, for example, as a pivoting lever, or as a hydraulic or pneumatic element or has corresponding servomotors, an on-demand loading of the filter element is possible. The connection or disconnection of the stripping also reduces the stress of the filter medium by the on or attacking stripping and in turn increases the service life of the entire filter element.

If the filter element has a lamellar filter medium which is arranged, for example, annularly or radially about an axis of rotation, an embodiment of the invention which is regarded as advantageous provides that the wiping element intervenes between two lamellae of the rotating filter element and the lower lamella of the upper lamella in the direction of rotation spreads in cooperation with the rotation of the filter element. The splayed lamina dissolves after continued rotation of the filter element of the scraper and fast in Rotation. Due to this rapid movement of the blade and possibly by the collision with the next blade, a detachment of deposited on the blade particles or the filter cake and a cleaning of the filter medium. With continued rotation of the filter element so the cleaning of all slats takes place. Again, there is the possibility by periodic or continuous engaging the stripping perform a cleaning of the filter element.

Before using the device according to the invention, it is advisable to check the condition of the filter element or to check the filter medium. In the course of this control, the cleaning of the filter element can take place at the same time. The cleaning, which preferably takes place via a pressure or vibration loading of the filter element, can thus be carried out before, during or after the operation of the device. The time of cleaning can be taken into account when creating maintenance plans, for example.

A development of the mobile device according to the invention which is regarded as favorable provides that a plate or rail projecting transversely to the direction of travel of the device, arranged in the exhaust air flow or protruding into the exhaust air flow, is provided with a baffle surface for at least a portion of the extracted particles. The plate or rail preferably has the baffle surface on a first side, while a baffle is provided on the side of the plate or rail opposite the baffle surface. This passes from the filter element falling or hurled particles to a silo or other catching device. The rail or plate thus has a dual function. It not only serves to guide the suction air flow, but at the same time separates the part of the mobile device in which the main components of the suction device are arranged, from the remainder of the device, which is mainly occupied by the ablation device. In this case, the baffle surface not only serves to guide the suction air flow, but also causes the filling material components, contaminants and particles introduced into the device by the removal device to be guided onto a sieve arranged below the baffle surface. In this context, it is of course also possible and provided in a preferred embodiment of the invention that in addition to said plate or strip another, arranged below the filter element and is arranged substantially transversely to the direction of travel of the device in the interior extending baffle. This is flat and has at least the width of the filter element. Conveniently it projects beyond the filter element in width, so as to prevent particles falling out laterally from the filter element or parts of the filter cake from reaching the part of the device below the baffle. The baffle preferably has raised or upwardly curved side surfaces. In addition, the baffle is aligned with a silo or other receiving device for deposited from the filling dirt and particles out. The falling on the baffle, hurled or dissolved from the filter element particles or other ingredients are promoted by the baffle in the silo or the receiving device. In order to ensure the targeted promotion of impinging on the baffle particle mixture in the silo, is provided in a development of the invention that the side surfaces are aligned with each other to extend. This orientation of the side surfaces causes a taper of the surface of the baffle on the silo or the collecting device. Thus, the transfer of the particles or of the particle mixture in the device is improved.

As recommended is considered when the removal device a second axis of rotation, which can be used to receive a roller, and in particular a brush roller. The second axis of rotation may have its own drive or be connected via a corresponding gear with a central drive of the device. If the device is not self-propelled but designed as a hitch, the connection can be made with a drive of the towing vehicle. The axis of rotation or the axes of rotation of the device can be used to vibrate the filter element or a screen arranged in the device. For this purpose, a reversing lever is provided, which is connected with its first end eccentrically with the first or second axis of rotation. The second end of the bell crank is attached to the screen or filter element disposed in the device. Also can be effected via the bell crank vibration of the baffle, so that there is a much improved promotion of Schmutpartikel or particle mixtures on the silo or the collecting device out. The reversing lever is substantially L-shaped and mounted pivotably in or against the direction of rotation in the device. For this purpose, a separate bearing can be used, but there is also the possibility that the reversing lever is rotatably mounted on a side surface of the guide plate. Depending on the arrangement point of the reversing lever is either the vibration loading of the baffle, the screen or the filter element. If the vibratory loading of the screen is ensured via the reversing lever, it is additionally possible for the screen to be fastened to different positions of a leg of the reversing lever and thus to adjust its inclination. Depending on the distance of the attachment point from the inflection point of the reversing lever, the amplitude of the vibration mediated by the reversing lever and thus the screening performance or the delivery rate of the device subject to vibration is also changed. As favorable and advantageous from a constructive point of view is considered when at least one end of the reversing lever is connected via a coupling rod with the first or second axis of rotation. This results in the possibility that the lever must not be assigned directly to the corresponding axis of rotation, but can also be attached to a more or less freely selectable point of the device.

In addition to the connection of the Vibrationsbeaufschlagung the screen, the filter element or the guide plate in or on the axes of rotation of the device is in a favorable development of the device according to the invention also the possibility that a separate oscillating drive is provided for said elements. If such an oscillating drive, which can be designed, for example, as an unbalance motor, is arranged in the device, this results in the advantage that the other drive or the other drives of the device are not impaired by the vibration. In addition to the use of a separate oscillating drive, it is of course also possible to provide a common drive unit for the first and / or the second rotation axis and the vibration drive. A corresponding connection of the drive unit with the corresponding axes then takes place via a suitably designed gear, for example a belt drive and suitable deflection or transmission disks or wheels. The transmission can be conveniently designed as a gear, chain or belt transmission. It is considered advantageous if the transmission is arranged in a side region of the device and structurally separated from the rest, possibly contaminated area of the housing. This ensures that the transmission is not affected by the pollution and thereby increases the life of the transmission.

As low is considered when the device is self-propelled or designed as a hitch to a tractor. In the embodiment of the device as a self-propelled device, it is recommended that an electric or internal combustion engine is provided as the main drive. This designed as the main drive of the device motor can then also be used to be coupled to the drive unit of the device. The corresponding vibration or rotational movement of the device parts, as already described above, is then carried out via this main drive.

In addition to the suction device, the device according to the invention preferably also has a removal device which picks up the contaminations or the contents which are deposited on the surface to be cleaned and transports them into the device. In this context, it is considered favorable if a roller is provided in the removal device, which may also be designed as a brush roller. As low is considered in this context, when this roller is arranged adjustable in height. Due to the height adjustment, the removal device can be adapted to the different substrates to be cleaned. In addition to the height-adjustable roller or alternatively, it is provided that an advantageous development of the device according to the invention has at least one Abstützrad that represents a relief of the roller and, if the Abstützrad is formed pivotally, also improves the steerability of the device.

As low is considered when the device according to the invention has at least one fixed or movable broom. This broom works through the sieve falling contents in the cleaned or abraded surface. It is provided in this context that the broom of the roller is arranged downstream of the device in the direction of travel.

The suction air flow is expediently discharged from the device. It is recommended in this case that an opening for discharging the suction air flow is provided on a cover surface or at least on a side surface of the device. Since the suction air flow has usually already been passed through the filter element before it has been discharged from the device, it has no or only a very low load of particles. A contamination of the environment or an impairment, for example, the operator of the device is thus prevented or reduced. It is considered favorable in this context if the suction air flow over the interior of the axis of rotation or the filter element or arranged on the axis of rotation filter element is guided.

Fig. 1

eine bevorzugte Ausführungsform der erfindungsgemäßen Vorrichtung in der Seitenansicht,

Fig. 2

eine weitere Seitenansicht der Vorrichtung von der der Fig. 1 gegenüberliegenden Seite aus gesehen und

Fig. 3

eine Frontansicht der Vorrichtung, wobei diese entlang der Linie A-A' in Fig. 1 geschnitten wurde.

The invention is shown schematically in the following drawings. Show it:

Fig. 1

a preferred embodiment of the device according to the invention in side view,

Fig. 2

another side view of the device of the Fig. 1 seen from the opposite side and

Fig. 3

a front view of the device, these along the line AA 'in Fig. 1 was cut.

Fig. 1 shows a preferred embodiment of a mobile device 10, which comprises a removal device 11. With the mobile device 10 contents, dirt and other particles can be removed from a surface.

In general, the mobile device 10 is suitable for cleaning surfaces of any kind, even with a solid surface. However, it is considered to be particularly favorable if the mobile device 10 is used on a sports field and in this case preferably on an artificial grass pitch. Here, in addition to recording the contents of the artificial turf field and the renewed entry into the square, a cleaning of the properties of the artificial turf pitch influencing filling layer is performed. In its interior 14, the mobile device 10 has a guide plate 15. This guide plate 15 serves to guide through the removal device 11 in the mobile device 10 registered filling material, mixed with dirt and particles on a centrally disposed in the mobile device 10 sieve 16. The screen 16 extends over the entire width of the mobile device 10 and almost over its entire length. The screen 16 is arranged inclined in the mobile device 10 and has a counter to the direction of travel, which is indicated by the arrow A, aligned slope. At the rear end 12 of the wire 16 in the direction of travel, this opens into a silo 17, which receives the dirt and other particles not falling through the wire 16. The screen 16 is releasably disposed in the traveling device 10 and supported on respective projections 18. The projections 18 are designed such that they allow a vibration of the wire 16, but prevent slippage of the wire 16. In order to set the screen 16 in vibration, this is connected via a deflection lever 36 with a rotation axis 28. On the one hand, the vibration improves the screening efficiency, and on the other hand, the vibrations of the screen 16 promote the filling material thrown onto the sieve 16 in the direction of the silo 17. The silo 17 has a container 21 which can be removed from the mobile device 10 for emptying , To remove the container 21, a locking tab 22 is released and the container 21 is pulled out of the mobile device 10.

The baffle 15 has approximately in the area above the middle of the filter a bevel 23, and thus forms a baffle 24, which redirects registered in the mobile device 10 filling, dirt or particles on the sieve 16.

The in the Fig. 1 shown inventive mobile device 10 additionally has a suction device 25. This is in the embodiment of Fig. 1 arranged in the upper portion 13 of the mobile device 10 and includes in addition to a suction fan (not shown), a filter element 26, which comprises a cylindrical fin filter 27 in the embodiment. Its fins 27 extend radially from a filter element 26 penetrating the first axis of rotation 28 of the mobile device 10 away. The lamellae 27 are formed by folding in a filter medium and increase the area available for filtering the exhaust air. As a filter medium come in the embodiment of Fig. 1 flexible materials in question, which are present for example on a textile basis or in the form of metal or plastic braids. Crucial here is that the filter medium provides a tailored to the expected particle size pore size.

Associated with the filter element 26 or the suction device 25, the mobile device 10 has in its interior 14 a sheet 29 having a guide plate 29, which serves on the one hand to guide the suction air flow through the interior 14 of the mobile device 10 and the other from the filter element 26 protruding or knocked out or thrown particles to the silo 17 out promotes. The sheet 30 has to improve the flow characteristics of the suction air flow at its, the silo 17 facing the end 38 a chamfer 31. This not only serves to direct the suction air flow, but at the same time forms another baffle surface 24 ', at the particles from the suction air flow be redirected in the direction of the sieve 16 and the silo 17. The further baffle surface 24 'thus has an additional protective function for the filter element 26, since here larger and heavier particles can be separated from the suction air flow and thus are not transported on to the filter element 26. It is thereby avoided premature clogging of the filter element 26 with too large particles.

The first rotation axis 28 has an eccentrically arranged receptacle 32 to which the first coupling point 33 of a coupling rod 34 is articulated. The second coupling point 35 of the coupling rod 34 is connected to a deflection lever 36, which in turn is attached to the extension 46 of the arranged inside 14 of the mobile device 10 plate 30. An end surface of the bell crank 36 is connected to the screen 16. Due to the rotational movement of the first rotation axis 28 and imparted via the eccentric receptacle 32 or the coupling rod 34, the screen 16 is subjected to vibration due to the pivoting of the reversing lever 36. By this vibration of the sieve 16, on the one hand registered in the mobile device 10 filling material in the direction of the silo 17 promoted, on the other hand, the screening further improved and a large part of the contents after the separation of other dirt or dirt objects back into the worn surface zurückverfrachtet. Due to the vibration loading, the separation and recycling takes place much faster. The lever 36 has in its directed towards the silo 17, lower leg 39 additional holes 40 into which a sieve 16 attacking or attached bolt 41 can be inserted. By inserting the bolt 41, the inclination of the screen 16 is changed and thus adjusted the selectivity and the separation speed. At the same time can via an adjustment of the screen tilt the amplitude of the vibration or vibration of the sieve 16 is changed, and thus also set the screening performance.

The filter element 26 is in the embodiment of Fig. 1 Self-cleaning trained. Thus, the filter medium initially has a non-stick coating, so that the caking or adhering of particles separated from the suction air flow is avoided or reduced. The sucked particles, which collect on the filter element 26 and on the surface of the filter medium, fall off the filter element 26 as soon as the Absaugbeaufschlagung is interrupted. The particles falling from the filter element 26 land on the plate 30 or the guide surface 29 and are conveyed from there into the silo 17. In addition to the non-stick coating of the filter medium, a wiping element 42 is simultaneously provided, which has a bar 43 extending over the entire width of the mobile device 10, which is arranged in the mobile device 10 so that it at least partially protrudes into the filter element 26 and between the Slats 27 engages. During the rotation of the filter element 26, a lamella 27 engages the strip 43 of the stripping element 42 and is retained for a short time. In this case, the lamella 27 is spread apart from the upstream in the direction of rotation fin 27 and dissolves after further rotation of the filter element 26 of the bar 43. After this release, the lamella 27 fast in the direction of rotation and it comes due to the rapid movement of the lamella 27 for detachment of superimposed Particles and possibly built on the filter medium filter cake. The stripping element 42 or only the strip 43 are movably arranged in the mobile device 10, so that no permanent loading of the slats 27 takes place through the strip 43. This continuous application would lead to premature wear of the filter medium or damage to the filter element 26 and reduce its service life. Due to the mobility of the bar 43 or of the stripping element, a periodic loading of the filter element 26 can take place. This can be done manually, for example in the course of cleaning cycles automatically or during use of the mobile device 10.

The mobile device 10 has in its top surface 44 on a flap 45 which is closed by a closure mechanism 70 and pivotally mounted on a hinge 47 on the mobile device 10. After opening the flap 45, the filter element 26 is freely accessible from the front and can be removed from the mobile device 10. At the same time, for example, for maintenance purposes, access to the other elements of the suction device 25, such as the stripping element 42, the coupling rod 34 or the plate 30 done. In order to detach the filter element 26 from the suction device 25, a clamp 48 is provided on the first axis of rotation 28, which can be withdrawn from the first axis of rotation 28 after opening a clamp 49 acting on the clamp 48, thereby releasing the filter element 26. The filter element 26, which is formed in the exemplary embodiment, as already shown, as a lamella ring, is attached to the first axis of rotation 28. The first rotation axis 28 is designed as a stub axle (cf. Fig. 3 ) and thus engages only at the two ends of the filter element 26 in its interior. Incidentally, the filter element 26 is hollow and thus allows a flow through the Absaugluftstroms.

In the exemplary embodiment, the removal device 11 has a second rotation axis 28 'of the mobile device 10, on which a roller 51 designed as a brush is arranged. In addition to the rotating roller 51, which causes the removal of the filling material and the particles from the surface while ensuring its entry into the mobile device 10, the removal device 11 has a support wheel 52 and in Direction of travel after the roller 51 downstream broom 53 on. The Abstützrad 52 also serves to adjust the height of the removal device 11 and thus feasible adaptation to different surface documents. The downstream in the direction of travel broom 53 sweep the sieved and falling out of the removal device 11, cleaned contents in the area, for example, an artificial grass pitch. The brooms 53 are not fixed to the removal device 11, but can be replaced or grown or reduced as needed. Also, the mobile device 10 is not limited to use with two brooms 53, but it is the arrangement of only one or more brooms 53 possible and conceivable. The roller 51 and the suction device 25, or the associated rotation axes 28, 28 'have a common drive unit 54. This is arranged in a separate compartment 55. As a result of the separate arrangement, contamination of the drive assembly 54 is prevented by particles charged in the mobile device 10 or by particles attached thereto.

Fig. 2 shows another side view of the mobile device 10. The mobile device 10 has a removable side panel, which can be removed for maintenance purposes, for example. In the embodiment of Fig. 2 the mobile device 10 is shown without side panel, so that here very well the gear 58 of the mobile device 10 can be seen. As already described in connection with the description of the mobile device 10 in FIG Fig. 1 explained, this has a central drive unit 54. This drives the first and second rotation axes 28 and 28 '. Associated with the drive unit 54 is the gear 58, which is connected via a belt drive 59 with the drive unit 54. Via the belt drive 54 there is a direct drive of the second rotation axis 28 'and the roller 51 bearing thereon. For this purpose, a pinion 60 is provided on the second rotation axis 28' arranged, which is in engagement with the belt drive 59. Also belonging to the gear 58 is a deflection wheel 61, which engages from the outside on the belt drive 59. This guide wheel 61 deflects the belt drive 59 in the direction of a translation wheel 62, which in turn is connected via a drive belt 63, in the embodiment a V-belt, with the first axis of rotation 28, and here ensures a translation. Due to the different diameters of the translation wheel 62 and arranged on the first axis of rotation 28 gear 64 increases the rotational speed of the first axis of rotation 28. The increased speed causes the self-cleaning function of the filter element 26 is further improved because the particles adhering to the filter medium due to the high centrifugal acceleration from the filter element 26 are thrown. Below the gear 64, a guide roller 65 is provided, which causes a strain relief of the drive belt 63. The deflection roller 65 is arranged on a holder 66, which can also carry the stripping element 42. Characterized in that the holder 66 is disposed on an axis of the guide roller 65, it can be changed in position. By means of this change in the position of the holder 66, a change of the attack of the stripping element 42 on the filter element 26 can be carried out. At the same time an automatic pivoting of the holder 66 and thus the stripping element 42 can take place via an actuation by the drive belt 63. It is thus possible to perform a periodic or controlled intervention of the stripping element 42 in or on the filter element 26. The in the Fig. 2 illustrated embodiment of the mobile device 10 has its own drive unit 54 for the gear 58. It is also possible, however, that the device 10 is coupled to the drive of a tractor (not shown). In addition, the mobile device 10 may also be designed to be self-propelled. The front in the direction of travel wheel 67 of the mobile device 10 is then designed to be steerable. The inside 14 of the mobile device 10 guided exhaust air flow is led out of the cover surface 44 of the mobile device 10 from this, after it has passed through the filter element 26 and was thereby freed from particles.

Fig. 3 shows a front view of the inventive mobile device 10, along the line AA, the in Fig. 2 is drawn, was cut. Clearly visible here is arranged in the upper part of the mobile device 10 filter element 26, which includes an annular fin filter 37. The filter element 26 is in the embodiment of Fig. 3 designed as a cartridge 68 and can be removed so quickly and easily from the mobile device 10 for maintenance or replacement in case of wear. The filter element 26 has in its interior a cavity 57 which serves to guide the suction air flow. The interior of the filter element 26 opens on the in Fig. 3 left side of the cartridge 68 in a guide channel 69, which guides the exempt from particles suction air from the mobile device 10. The guide channel 69 encloses a first axis of rotation 28 of the mobile device 10. This is formed in the embodiment as a stub axle, that is, the axis of rotation 28 does not pass through the entire filter element 26, but only acts on the ends. At the opposite end there is provided a second stub-like axis of rotation 28 ", which is rotatably supported, but not driven, The axis of rotation 28 on the left side of the mobile device 10 communicates with the gear 58 already described in connection with FIG Fig. 2 was explained in detail. In Fig. 3 not recognizable is the stripping element 42 which engages in the fins 27 of the filter element 26 and here an act of loading the fins 27 for knocking off particles or a filter cake, which has formed on the fins 27 serves. In the lower part of the device 10 is the second axis of rotation 28 ', on which a roller 51 is attached. The second axis of rotation 28 'is, due to the larger forces acting here, formed as a continuous axis. The second axis of rotation 28 'is in direct communication with the drive unit 54 of the mobile device 10. The power transmission is ensured here by a belt drive 59. In addition to the belt drive 59 is in the left area of in Fig. 3 Device 10 shown to recognize a guide wheel 61, which causes a translation to the first axis of rotation 28 towards, so that this has a compared to the second axis of rotation 28 'increased speed. In the middle region of the mobile device 10 is in Fig. 3 a sheet 30 can be seen, on which the particles falling from the filter element 26 impinges and through the sheet 30 to a in Fig. 3 unrecognizable, as arranged in the rear region of the mobile device 10, silo 17 is promoted. The sheet 30 has at its side edges 71 upwardly bent sheets, which prevent the particles from the sheet 30 to the underlying roller 51 fall.

The claims now filed with the application and later are attempts to formulate without prejudice to the attainment of further protection.

If, on closer examination, in particular also of the relevant prior art, it appears that one or the other feature is beneficial for the purpose of the invention, but not of decisive importance, it is of course already desired to formulate such a feature , in particular in the main claim, no longer having.

The references cited in the dependent claims indicate the further development of the subject matter of the main claim by the features of the respective subclaim. However, these are not as a waiver of achieving independent, objective protection for the features to understand the dependent claims.

Features that have hitherto been disclosed only in the description may be claimed in the course of the method as of essential importance to the invention, for example to distinguish from the prior art.

Features which have been disclosed only in the description, or also individual features of claims comprising a plurality of features, may at any time be included in the first claim for distinction from the prior art, even if such features are associated with others Characteristics were mentioned or achieve particularly favorable results in connection with other features.

Claims (15)

1. Vehicle (10) to take filler material and particles contaminating the filler material away from a surface, in particular a sports field, preferably an artificial turf, wherein the vehicle (10) has a taking-away device (11) picking up the filler material and the particles from the surface and depositing them in the vehicle (10), and has a suction device (25) with a filter element (26) for separating particles from a suction air flow, and wherein the filter element (26) is designed self-cleaning, characterized in that a stripper element (42) engaging at or in the filter element (42) or gripping in the filter element (26) is provided for a vibration impingement of the filter element (26), wherein impingement with vibrations is conveyed via a drive assembly (54) of the vehicle (10), or a separate drive assembly (54) is provided for the vibration impingement.
2. Vehicle according to claim 1, characterized in that the suction device sucks off the particles directly from the surface and/or the filler/particle mixture introduced into the vehicle (10), or that the filter element (26) is configured like a cylinder, ring or essential square, or that the filter element (26) is designed such that it can be impinged with vibrations.
3. Vehicle (10) according to one or both of the preceding claims, characterized in that for vibration impingement a lever, in particular a reversing lever (36) engaging eccentrically with the filter element (26), and connected with the drive assembly (54) or a traveling mechanism is provided, or a centrifugal separator upstream from the filter element (26) is provided, or a control is provided for the suction air flow wherein the flow direction of the suction air flow is reversible, or the suction air flow can be introduced in the filter element (26) for blowing out, or the reversal or introduction of the suction air flow or the blowing-out of the filter element (26) is executed manually or automatically.
4. Vehicle according to one or more of the preceding claims, characterized in that the filter element (26) is arranged, in particular inserted or slid-on, on or at a first rotational axle (28, 28', 28'') of the vehicle (10), wherein the filter element (26) contains as filter material in particular cotton, polyester fleece, polypropylene, cellulose, a ceramic or ceramic-like material, or metal, or fabric, or mats from one or more filter materials, or the filter element (26) or the filter material has a humidity-resistant, anti-static or anti-adhering coating, wherein the filter element (26) is preferably designed such that it can be dismantled, or, when the filter element (26) is installed, the replacement of the filter material can be carried out without removing the filter element (26).
5. Vehicle according to one or more of the preceding claims, characterized in that the filter material is folded zigzag- or wave-like in order to form lamellas (27), and the lamellas (27) are formed extending radially away from the first rotational axle (28) or a longitudinal axle of the filter element (26) along the circumference, or the lamellas (27) are arranged annularly or radially around the first rotational axle (28), wherein an outlet or inlet of the suction air flow through the interior of the first rotational axle (28) or the filter element (26) is provided, wherein preferably the stripper element (42) is formed as a rail (43), or a finger, bolt, or pin arranged essentially transversely to the traveling direction of the vehicle (10) or parallel to the first rotational axle (28) or the longitudinal axle of the filter element (26).
6. Vehicle according to one or more of the preceding claims, characterized in that the stripper element (42) engages continuously or periodically at the filter element (26), engages with the filter element (26), or impinges the filter element (26) with pressure and/or vibrations, and wherein preferably a manual or automatic control for the engagement of the stripper element (42) at or in the filter element (26) is provided, or the stripper element (42) engages between two lamellas (27) of the rotationally designed filter element (26), spreads the lamella (27) that is on the bottom in rotational direction apart from the lamella (27) that is on top in rotational direction interacting with the rotation of the filter element (26), and, after further rotation of the filter element (26), the spread-apart lamella (27) comes off the stripper element (42) and shoots in rotation direction, wherein by a shooting movement of the lamella (27) the particles or filter cake deposited on the lamella (27) come off.
7. Vehicle according to one or more of the preceding claims, characterized in that an impingement of the filter element (26) with pressure and/or vibrations is carried out before, during or after the operation of the vehicle (10), and in the interior (14) a plate preferably orientated transversely to the traveling direction of the vehicle (10), arranged in the suction air flow or protruding in the suction air flow is provided, in particular a guide plate (15) or a rail with a bouncing surface (24) for at least a part of the sucked particles, or a guide surface (29) opposite the bouncing surface (24) for particles or filter cake falling or being thrown out of the filter element (26) is provided.
8. Vehicle according to one or more of the preceding claims, characterized in that a silo (17) arranged in or at the vehicle (10) is arranged for receiving the filling material, dirt or the particles, and preferably a planar sheet metal (30) arranged preferably below the filter element (26), extending essentially transversely to the traveling direction of the vehicle (10) in the interior (14) of the vehicle (10) for particles or the filter cake or its parts that have come off the filter element (26) or been blown out of the filter element (26) or the filter material or by the stripper element (42) is provided, wherein the sheet metal (30) has preferably raised or bent upwards side edges, or an incline orientated towards the silo (17) and conveys the particles falling or thrown on the sheet metal in the silo (17), or the side edges (71) of the sheet metal (30) are orientated approaching each other, wherein the surface of the sheet metal (30) tapers.
9. Vehicle according to one or more of the preceding claims, characterized in that the taking-away device (11) has a second rotational axle (28') for receiving a cylinder (51), in particular a brush cylinder, and an essentially L-shaped reversing lever (36) is provided, that preferably is connected to a coupling point (33, 35) eccentrically with the first or second rotational axle (28, 28', 28") and to another coupling point (33, 35) on a sieve (16) provided in the interior (14) of the vehicle (10) on the filter element (26) or the metal sheet (30), wherein the lever is mounted in the vehicle (10) swiveling in the direction or in opposite direction of rotation, wherein the reversing lever (36) conveys a vibration impingement of the sieve (16), the sheet metal (30) or the filter element (26).
10. Vehicle according to one or more of the preceding claims, characterized in that at least one coupling point (33, 35) is connected via a coupling rod (34) to a first and second rotational axle (28, 28', 28"), or the reversing lever (36) is mounted rotating or swiveling on a side edge (71) of the sheet metal (30), or a vibratory drive, in particular an unbalance motor is provided for the sieve (16), the filter element (26) and/or the sheet metal (30), and preferably a drive assembly (54) is provided at least for the first rotational axle (28, 28', 28'') or the vibratory drive, the taking-away device or the suction device.
11. Vehicle according to one or more of the preceding claims, characterized in that for transmitting the drive energy to the first or second rotational axle (28, 28', 28''), the taking-away device, the suction device or the vibratory drive a gearing (58) is provided, and/or the gearing (58) is designed as toothed gearing, chain gear or belt gear, and the gearing (58) is arranged preferably in traveling direction laterally on or in the vehicle (10), or the drive assembly (54) is configured as electro or combustion motor or is coupled to a traveling motion of the vehicle (10).
12. Vehicle according to one or more of the preceding claims, characterized in that the driving unit is coupled with a drive of the vehicle (10), or the vehicle (10) is automotive or a trailer, or a sieve (16) is tilted in or in opposite direction of the traveling direction or orientated horizontally, or is arranged releasably or fixedly in the vehicle (10), and preferably has a variable hole width wherein the hole width can be adjusted manually or automatically.
13. Vehicle according to one or more of the preceding claims, characterized in that the taking-away device (11) and/or the cylinder (51) can be height adjusted, or the vehicle (10) has at least one in particular swiveling support wheel (52), and preferably at least one stationary or moveable broom (53) is provided for sweeping filling material falling through the sieve (16), wherein the broom (53) is arranged after the cylinder (51) in traveling direction on the vehicle (10) or the taking-away device (11).
14. Vehicle according to one or more of the preceding claims, characterized in that on a cover surface (44) or at least one side face of the vehicle (10) an opening for discharging the suction air flow is provided, or the cover surface (44) or at least one side face is designed removably completely or partly from the vehicle (10) at least in the area of the filter element (26), and wherein the filter element (26) extends over the entire width of the vehicle (10) or a part thereof.
15. Vehicle according to one or more of the preceding claims, characterized in that the filter element (26) has a rotating and a stationary section, or a channel (69) is provided for the suction air flow, or the filter element (26) is formed as capsule or cartouche (68) that can be in particular dismantled or removed as a whole, or the filter element (26) is designed swiveling automatically or manually or swiveling into the suction air flow.

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