Turbulator insert for fuel-gas draw-tubes in boiler housing, has spring member acting on channel wall at outflow end of insert

摘要

A closable cleaning opening is provided for on the inflow side of the housing for cleaning the fuel-gas draw-tubes (2). A positioning stop (5) is provided on the inflow side of the turbulator insert. A spring member (7) is arranged on the outflow end of the insert for acting on the channel wall in a friction-fitting or form-fitting manner. The spring member extends beyond the periphery of the flow channel (K) at at least two opposing positions.