The invention provides an efficient and continuous sand mixing device of precoated sand, and belongs to the technical field of precoated sand
processing. The efficient and continuous sand mixing device includes a box, wherein a feed port is formed in one side of the box, a
discharge port is formed in the other side of the box, a first belt
pulley is arranged on the outer part, located on one sideof the feed port, of the box, a second belt
pulley is arranged on the outer part, located on one side of the
discharge port, of the box, the first belt
pulley and the second belt pulley are connectedby a
conveyor belt in a sleeving mode, and the
conveyor belt penetrates through the box from the feed port and the
discharge port; a batching inlet is formed in the side, close to the feed port, of the upper part of the box, and the box is internally provided with a first material distributing
assembly, a second material distributing
assembly and a third material distributing
assembly at intervalsin the direction of the
conveyor belt; and the first material distributing assembly is located between the feed port and the batching inlet. According to the embodiment of the invention, continuous and efficient sand mixing operation of the precoated sand can be realized, and the efficient and continuous sand mixing device has the advantages of high sand mixing efficiency and good sand
mixing effect.