Patent ID: 7762717

Claim:
Device for processing bulk materials, for example by mixing, shredding, metering and/or screening, said device comprising: a container, an implement, a shaft of the implement, an external rotary drive, a connection unit, and a labyrinth seal; wherein the implement is driven within the container about a horizontal axis by the external rotary drive, wherein the connection unit is arranged between the container and the rotary drive, wherein the container is detachably fastened to the connection unit, wherein the shaft of the implement is detachably retained in the connection unit and detachably attached to the rotary drive, wherein the labyrinth seal is loosely accommodated in the connection unit for the purpose of sealing the container against the implement shaft of the implement, wherein the labyrinth seal is oversized with respect to the shaft providing a gap between the labyrinth seal and the shaft, wherein the implement shaft is detachably attached in the connection unit with a spigot of the rotary drive, and wherein the implement shaft is retained only in the connection unit and terminates freely in the container.