Novel horizontal closed sand mill for coating production

The utility model discloses a novel horizontal closed sand mill for coating production, which comprises a machine body, a motor and a water tank support, the motor is mounted on the side surface of the machine body, the water tank support is fixed at the lower end of the machine body, and a first discharge port, a second discharge port, a third discharge port and a discharge pipe are arranged on the machine body. The first discharging port, the second discharging port and the third discharging port are in threaded connection with sealing covers. The first sieve plate, the second sieve plate and the third sieve plate are arranged to be matched with the large-particle grinding cavity, the medium-particle grinding cavity and the small-particle grinding cavity, coating can be finely ground by utilizing three grinding media with different sizes, and the screw conveying paddle is driven by the motor to rotate so that raw materials meeting standards can be pushed towards the discharging cavity. Raw materials can be