Patent ID: 11944976
Assignee: VERTICAL POWER MILLS TECHNOLOGY AG
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 16:
17. A method for maintaining a vertical ball mill,
wherein the vertical ball mill comprises a rotor that is axially and radially mounted at an upper end and hangs downwards, a stator which radially surrounds the rotor, is not loaded by a weight of the rotor, stands in a self-supporting manner, and has a lateral surface that is oriented tangentially to the rotor and is approximately cylindrical, within a shape tolerance, and a base plate that supports a weight of the stator,
wherein the stator is composed of at least two stator segments which are separable from one another, stand unsupported in the separated state, and are movable relative to one another,
wherein each of the stator segments comprises, on at least one side edge of a wall, extending from a top edge of the wall forming the lateral surface to a bottom edge of the wall, a sealing surface for sealing to the other stator segment in each case, and, on the bottom edge, a standing surface which is dimensioned appropriately for a load and is intended for sealing to the base plate,
wherein the stator segment weighs, in a standing manner, on the base plate with the standing surface, in a manner orthogonal within an angular tolerance on a load-bearing surface of the base plate,
wherein the method comprises:
separating the stator into the stator segments, wherein a stator is separated at the sealing surfaces,
arranging auxiliary devices under at least one of the stator segments, and
lateral shifting of the stator segment and of the auxiliary devices using a shifting device.