Separation apparatus for tubular flow-through apparatuses

The invention relates to a separation apparatus for tubular flow-through apparatuses (22) which are used to convey liquids or gases from drilled wells in rock or deep wells, where the separation apparatus is suitable for separating off sand and rock particles and comprises: an annular stack (20) made up of hard and brittle annular discs, where the discs (30) are stacked and clamped in such a way that a separation gap (37) for separating off sand and rock particles is present between each of the individual discs (30); a coupling element (18, 19) is present at one or both ends of the annular stack (20); a clamping device which firstly makes it possible to clamp the hard and brittle discs (30) flexibly and secondly to fasten the annular stack (20) in a variable fashion on the tubular flow-through apparatus (22) is present at one or both ends of the annular stack (20). The invention likewise relates to the use of a separation apparatus according to the invention for separating off sand and rock particles in a process for conveying liquids or gases from drilled wells in rock or deep wells by means of tubular flow-through apparatuses.