The utility model belongs to the technical field of
grinding machines, and particularly relates to a water
grinding machine which comprises a mounting frame, an upper mounting plate arranged on the mounting frame, a mounting box fixed on the upper mounting plate, a bidirectional motor mounted on the mounting box, a
ceramic grinding wheel mounted on the bidirectional motor, a lower mounting plate mounted on the mounting frame, a water tank mounted on the mounting plate and a water pump mounted on the lower mounting plate. The water tank communicates with a first water conveying
pipe and is provided with a
shunt valve, the water pump communicates with a second water conveying
pipe, the mounting box is provided with a water valve, the
shunt valve communicates with a shunt
pipe, the water valve communicates with a
cooling pipe, the
cooling pipe is provided with a sprinkler head, and the upper mounting plate is provided with a
backflow assembly. By starting the water pump, cooling water in the water tank flows through the first water conveying pipe, the second water conveying pipe, the water distributing pipe and the
cooling pipe, so that the cooling water can be sprayed out of the water spraying head, the temperature in the
grinding process is effectively reduced,
sintering of the
ceramic grinding wheel due to friction overheating is prevented, the service life of the
ceramic grinding wheel is prolonged, and dust is reduced; and the
working environment is optimized.