Pump spindle seal device

The utility model relates to a sealing device of a pump axle, which is provided with an oil chamber 1 and an oil chamber 2. A supporting clapboard is arranged between two oil chambers. A pump axle passes through two oil chambers. The external side wall of the oil chamber 1 is connected with the shell of a pump motor. A bearing is arranged between the external side wall of the oil chamber 1 and the pump axle; and a frame oil seal is arranged between the external side wall of the oil chamber 2 and the pump axle. In the internal cavity of the oil chamber 1, a mechanical sealing device is arranged between the side wall of the oil chamber 1 and the pump axle. In the internal cavity of the oil chamber 2, mechanical sealing devices are arranged between the support clapboard and the pump axle, between the inside of the side wall of the oil chamber 2 and the pump axle. Since double oil chambers and three sets of mechanical sealing devices are arranged, the mechanical seal in the oil chamber is basically not affected b