Device and method for emptying a container with a liner

A device for emptying a container with a liner, the device comprising:

• a product guide tube;
• an upper liner connection end comprising a sealing ring arrangement for sealingly fixing the liner;
• a lower connection end;
• and
• an access socket branching off from the product guide tube and being adapted to be closed,
• wherein the upper liner connection end comprise an outer ring arrangement fixedly connected to the product guide tube and a guide ring arrangement formed coaxially to the outer ring arrangement and axially adjustable along a tube axis,
• wherein the outer ring arrangement has on its inner side a lower and an upper radially inwardly adjustable sealing ring which are spaced apart from one another in the axial direction along the tube axis,
• wherein the guide ring arrangement comprises a guide socket with an outer sealing surface which are arranged in a working position of the guide ring arrangement radially inside the sealing rings against which the sealing rings are attachable in their sealing position for sealing and fixing the liner, and
• wherein, between the product guide tube and the outer ring arrangement there is arranged an annular receiver arrangement which has a docking socket with an outer sealing surface which is arranged and formed radially inside the lower sealing ring in such a way that the lower sealing ring is attachable against the outer sealing surface in its sealing position for sealing the liner when the guide ring arrangement is not in the working position.