| 摘要 |
<p>A fixed or interchangeable fastener element attached to the stirring shaft is equipped with >=1 grooved recesses onto which one or more stirrer blades can be fastened to one or both sides of the orifice plate with the aid of a suspending recess, connecting slit and a fastener recess in the blade or in a retaining element. Pref. the mixer blades and the fastener element are made of PTFE.</p> |
