A self dumping sand dredger is a common equipment that is usually used in conjunction with a small sand dredger for construction. The dredger has the functions of extracting, storing, and transporting sand, and is also known as a multifunctional sand dredger in some places. When the equipment is working, the large ship pumps the sand into its own cabin. When the dredger is full, the horizontal paddle is activated, and the dredger is driven to the shore to unload the sand to the bottom of the water. The small ship then pumps the sand to the shore, matching the size, Very practical.