Sand-mixing equipment

A novel sand mixing device, comprising an electric motor and a hydraulic system, the electric motor is used as the power source of the hydraulic system, and the hydraulic system drives all the actuating elements in the sand mixing device, and

• wherein the electric motors are variable-frequency integrated electric motors, and
• wherein the sand mixing device comprises a discharge centrifugal pump, a suction centrifugal pump, a mixing system, a sand conveyor and a bearing device, the discharge centrifugal pump, the suction centrifugal pump, the mixing system and the sand conveyor are integrated on the bearing device, and the electric motors and the hydraulic system are also integrated on the bearing device, and
• wherein the sand mixing device comprises a liquid adding system, a solid adding system, a cooling system and a manifold system, the manifold system is set at both sides of the length direction of the bearing device, the sand conveyor is set at one end of the length direction of the bearing device, the mixing system and the sand conveyor are arranged adjacent to each other, the solid adding system is set above the mixing system, the liquid adding system and the solid adding system are arranged adjacent to each other, the discharge centrifugal pump and the suction centrifugal pump are set in the manifold system, the electric motors and the cooling system are set at the other end of the length direction of the bearing device, the cooling system is set above the electric motors, the hydraulic system and the electric motors are arranged adjacent to each other.