Separating device for tubular flow-through devices

A separating device for a tubular flow-through device (22) for extracting liquids or gases from wells drilled in rock or deep wells, the separating device being suitable for removal of sand and rock particles and comprising:

• an annular stack (20) of brittle-hard annular disks, the disks (30) being stacked and braced in such a way that a separating gap (37) for the removal of sand and rock particles is present in each case between the individual disks (30),
• a coupling-on element (18, 19) at one or both ends of the annular stack (20) configured to uniformly transfer clamping forces to the annular stack, and
• a clamping device at one or both ends of the annular stack (20) coupled onto the coupling-on element to flexibly brace the brittle-hard annular disks (30) and variably fasten the annular stack (20) on the tubular flow-through device (22), wherein an inner diameter of the annular disks is greater than a diameter of the tubular flow-through device.