Leak-proof plate for lubricating or cooling roll capable of split replacement

The utility model relates to a water leakage prevention water cutting plate, parts of which can be individually replaced. The plate comprises a water cutting plate body and a fixing bolt of the water cutting plate body. An elastic buffer layer is arranged at the tail end of the inclined surface of the water cutting plate body; the water cutting plate body is in contact with a working roll; the elastic buffer layer is fixed on the water cutting plate though the fixing bolt; and sealant is adopted to seal the joint between the elastic buffer layer and the water cutting plate. Compared with the prior art, the utility model has the beneficial effects that the elastic buffer layer can be individually replaced, the replacement process is simple and quick, and the service life of the water cutting body is prolonged. The working contact between the water cutting plate and a mill is changed from rigid contact into an elastic contact so that the sealing degree between the cutting plate and the working roll is improved,