One popular type of filter for dirty air has many elements of cylindrical cloth.
Dirty air goes into the center and the particles are strained out.
The problem is to dislodge the particles. They fall into a hopper and are collected at intervals. Let's see the layout. The manifold has circular stubs around which the sock is fastened. Avoid the optical illusion in the sketch that the white regions are cylindrical, it is the grey dirty air inside a cylindrical sock.