Patent ID: 8048301

Claim:
Device for treating a fluid, comprising a container with opposite ends and an inner space, at least one access to the inner space arranged on one of the opposed ends of the container, wherein the at least one access comprises a first opening and a second opening, a first grid body which is arranged in the inner space adjacent the other one of the opposed ends, a third opening extending through the first grid body that is axially aligned with the second opening, and a tube having a first free end that remains sealingly engaged with the second opening and a second free end that can axially engage with and disengage from the third opening, wherein the first grid body divides the inner space into a first compartment for a treatment medium connected to the first opening and a second compartment which is connectable by the tube to the second opening and which is free of treatment medium, wherein the tube has a connecting arrangement connecting the second opening to the first compartment, wherein the connecting arrangement comprises a device adjacent the second opening that co-acts with a screw thread on the tube to axially move the tube between a first position in which the second free end engages the third opening to connect the second opening to the second compartment as the tube is rotated in a first direction and a second position in which the second free end is disengaged from and spaced apart from said third opening to connect the second opening to the first compartment as the tube is rotated in a second direction opposite to the first direction, and wherein the treatment medium can be carried in or out of the first compartment through the second opening and the tube by way of the connecting arrangement when the second free end of the tube is axially disengaged and spaced apart from the third opening.