Driving device for taking away filling material from a surface

Abstract

The invention refers to a driving device for taking away filling material and particles soiling the filling material from a surface, in particular a sports field, preferably from an artificial lawn field. The driving device has a taking away device which removes the filling material and the particles from the field and puts it in the driving device, as well as a suction device with a filter element for separating particles from a suction air flow. The invention is characterised in that the filter element is self-cleaning.

Description

[0001]The invention refers to a driving device for taking away filing material from a surface, the device having a taking-away device and a suction device with a filter element.BACKGROUND OF THE INVENTION[0002]Sports fields, and here preferably sports fields with an artificial lawn surface, contain filling material which has been put in the artificial lawn, influencing or determining the characteristics of the artificial lawn and adapting them to the respective kind of sport which has to be played on it. In the course of time on the surface, and here in particular on the artificial lawn field, dirt and other particles are such as, for example, dust are deposited which are combined with the filing material and thus influence in a negative way the characteristics of the sports field. Therefore it is provided to take away the filling material periodically from the artificial lawn field, to clean it from particles and attached dirt, and then to put it again on the sports field.[0003]As ...

AI Technical Summary

Benefits of technology

[0006]Therefore it is an object of the present invention to provide a driving device of the type mentioned in the beginning, which has a large availability, that means low service times.

[0007]In order to solve this problem the invention refers to a driving device as described in the beginning, and suggests that the filter element is designed self-cleaning. Because of the self-cleaning design of the filter element the service or cleaning intervals of the device are prolonged. Besides, filters have to be exchanged less frequently. These measurements altogether lead to a reduced standstill time of the device and increase the use and the availability. By reducing the standstill time and the effort of service reduced by a less frequent exchange of filters a significant increase of efficiency of the device and a faster amortization of the cost of purchase is reached. Less running costs are caused by the reduced expenditure for maintenance which contributes, on the other hand, to a reduction of the financial burden of the operator of the device.

[0008]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 an artificial lawn field, or the mixture of filling material and particles fed in the device is sucked in the device after putting in. Here the amount of particles is removed from the mixture which has a lower density, a lower weight and thus ability of hovering. Only in this way the suction by means of an air flow can be guaranteed. The power of the air flow can, at the same time, select the amount of particles or parts which can / has to be separated from the suction air flow through the filter in the suction device or the filter element.

Problems solved by technology

A disadvantage with the known suction devices, and here in particular with the filter elements employed in them, is the fact that already after a short application on fields with a large amount of dust or particles they loose their function.

This reduces continuously the performance of the filter element.

Therefore known devices have to be serviced in regular intervals which might be, depending on the occurring dust, rather short.

This is seen as a disadvantage as the exchange of the filter element or the new filter element is very expensive, and the frequent exchange causes a high expenditure of working time and the linked costs.

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