Dust separator for separating dust from flowing gaseous media

A dust separator for separting particles from a flowing gaseous media, said separator comprising:

• a main flow conduit for conducting the gaseous media;
• means for imparting a swirling motion to the gaseous media within said main conduit;
• a freely-rotating turbine wheel arranged at an outlet of said main conduit, said wheel including blades on the periphery thereof which are acted upon by gaseous media from said main conduit to rotate the turbine wheel;
• an outlet conduit disposed downstream of said turbine wheel;
• and
• an annular channel surrounding said turbine wheel blades, said channel communicating with said main conduit by means of a first gap situated between the outlet of said main conduit and the inlet of said turbine sheel blades, and communicating with said outlet conduit by means of a second gap situated between the outlet of said turbine wheel blades and an inlet of said outlet conduit;
• the area between the outlet of said turbine blades and the inlet of said outlet conduit being unobstructed to enable gaseous media exiting said blades to travel directly into said outlet conduit;
• said turbine wheel being mounted in an adjustable bearing defining means for adjusting said first gap, said outlet conduit being movable to enable said second gap to be adjusted.