| 摘要 |
<p>The present invention relates to a sealing arrangement between a rotary drum and the stationary end thereof arranged in a material flow in relation to each other. In particular, the invention relates to a sealing between a rotary drum kiln and the feed end thereof, whereby pressurized gas, such as air, is fed to the connecting point of the two in such a way that the angle α between the feeding direction of the gas and the plane substantially perpendicular to the center axis of the rotary drum is 90° or less. The air flow is directed to the sealing in such a way that it prevents leaking of process gas and solid matter dust from the connecting point of the rotary drum and the feed chamber and that as little air as possible is directed out to the surroundings. Due to the gas flow, the stationary surface and the moving surface do not rub together.</p> |
