| 摘要 |
A method of wet-grinding a surface, particularly a floor comprised of stone or stone-like material, wherein liquid is delivered to the area of contact between a grinding tool and the grinding surface, wherein liquid-bound particulate solids are withdrawn from the grinding area by suction and filtered to extract the particulate solids from the liquid, and wherein the liquid filtrate is returned to the tool grinding area. The grinding tool (2) is encircled by a skirt (3) whose rim seals against the surface (30). The flow of liquid and solids is led to one or to a few of a plurality of filter bags (11) and the liquid/solids flow is switched to a fresh bag (11) or to a fresh group of bags (11) when a previous bag or previous group of bags has been filled, wherein the previous bag or group of bags is isolated from the flow (5) and left for the liquid to drain gravitationally therefrom as the fresh bags are being filled. The bags are removed and sealed when liquid no longer runs from the bags. |
