Overflow-pipe-free hydroclone provided with cylinder and cone connected body

The utility model provides an overflow-pipe-free hydroclone provided with a cylinder and cone connected body. The hydroclone is characterized in that a cylinder and a cone are overall elements of the cylinder and cone connected body, a smooth arc transitional surface is arranged in an intersection part of inner sides of the cylinder and the cone, a slurry inlet and a cylinder part form a whole element, the upper end and the lower end of an external overflow cap are connected with an external overflow pipe and the cylinder of the cylinder and cone connected body through hoops, and the lower cone of the cylinder and cone connected body is connected with a sand setting nozzle through a sand setting nozzle nut.