Sand cleaning machine for casting

The sand cleaning machine comprises a cylindrical grinding rod, a motor and an air cylinder, a spiral groove is formed in the outer side wall of the cylindrical grinding rod, a vertical rod coaxial with the grinding rod is fixed to the middle of the top end of the grinding rod, and a motor mounting support and an air cylinder mounting support are sequentially arranged above the vertical rod from bottom to top. A vertically-arranged motor is fixedly installed on the motor installation support, an output shaft of the motor is fixedly connected with the top end of the vertical rod through a coupler, a vertically-arranged air cylinder is fixedly installed on the air cylinder installation support, the bottom end of a piston rod of the air cylinder is fixedly connected with the motor installation support, and a handheld rod is fixed to the upper end of the air cylinder installation support. The sand cleaning machine disclosed by the utility model has the advantages of convenience in sand cleaning of small castings,