Patent ID: 8298428

Claim:
A cleaning apparatus for removing magnetic bodies from a liquid flow of drilling fluid, said apparatus comprising: a fluid channel for containing the liquid flow of drilling fluid; and at least one cleaning magnet attached to the fluid channel for engaging the liquid flow, and for attracting magnetic bodies in the liquid flow when flowing through the fluid channel; wherein said cleaning magnet projects upwards in the fluid channel and has a free upper end portion; wherein the cleaning magnet is provided with a removable material forming a closed stocking surrounding the magnet and being open at a lower end portion thereof, thereby allowing for easy mounting of the stocking onto the magnet, thereby also allowing for easy removal of the stocking from the magnet upon accumulation of magnetic bodies thereon, said open and lower end portion is provided with a bail projecting above the cleaning magnet; and wherein said open and lower end portion of the removable stocking is surrounded, at least partly, by a weight mass for holding the stocking in place in the fluid channel and in said liquid flow when operational.