Fluid jetting apparatus for rejuvenation of artificial sports surfaces

摘要

The apparatus comprises a wheeled carriage 37 with a multiple array of nozzles 18 which are supplied with a mixture of fluids such as water and air in such a combination that compacted sand within the surface is broken up and dislodged, but without the excess wetting of known techniques which can cause flooding etc. The fluids are preferably combined in a manifold prior to supply to the jet nozzles and the mix ratio is controlled by valves. The supply of fluids may be pulsed. The water may contain dissolved cleaning agent. Also claimed is a method of surface treatment comprising mixing working fluids, passing them through a distribution bar to an array of nozzles for application to the desired surface.