Device for the separation of solid objects from a flowing fluid

A device for the separation of solid objects from a fluid flowing in a conduit tube (2), comprising a housing mounted between separate parts of the tube (2′, 2″), which housing comprises a tubular outer wall (3) and a tubular inner wall (4) of a rotation-symmetrical basic shape, a ring-shaped collecting space (8) being delimited between said walls, and a central body (12) of a rotation-symmetrical basic shape placed concentrically relative to the inner wall (4), which central body at an inlet end cooperates with a first fluid converting device (15) having the purpose of transforming an arriving axial fluid flow into a substantially rotating flow in a ring-shaped space (17) between the central body (12) and the inner wall (4), and at an outlet end cooperates with a second flow converting device (16) with the purpose of transforming the rotating fluid flow into an outgoing axial flow in the tube part downstream of the housing, the inner wall (14) having passages through which objects (9) of a larger density than the fluid and carried by the fluid may pass radially outwards to be collected in a bottom (11) of the collecting space (8), characterized in that said passages consist of a set of tangentially separated holes (20) of elongated shape, which are placed at a distance from said bottom (11) in a part of the inner wall (4) located downstream, while a part of this wall located upstream lacks such holes.