Suction Device for Drilling Mud

Abstract

Suction device for subsoil drilling rigs, comprising: a main body, having at least one internally hollow cylindrical body; a rotary actuator associated with the main body; a rotation shaft extending within the cylindrical body. The rotation shaft is interlocked with the rotary actuator and has an end portion axially protruding from the cylindrical body. The device further comprises a terminal element, mounted on the end portion of the rotation shaft and having a plurality of circumferential openings putting the inside of the cylindrical body in fluidic communication with the outside environment. The suction device further comprises a cleaning device. The cleaning device comprises a plurality of protrusions substantially integral with the cylindrical body; each protrusion extends into a respective one of said openings, thus cleaning such openings during a rotation of said terminal element.

Dependencies are inferred from the claim text.