| 摘要 |
<p>With the method and the device a material is transported pneumatically in a duct (10), wherein gas is supplied continuously through inlet pipe (18) arranged one after the other and opening into the transport duct (10). Each gas inlet pipe (18) has, at a distance from its end (28), a short narrowing (20), wherein the flow speed of the gas reaches the sound speed and decreases before the connection of the end (28) in the transport duct. A plurality of gas inlet pipes (18) are supplied by a common supply pipe (16, 17) which is arranged close to the transport duct (10). The gas inlet pipes (18) open with an angle of 35 into the transport duct (10) and have two sections (21, 23) sealingly connected by a removable connection (24) a perforated diaphragm (20) and a filter (22) are retained removably by the connection. </p> |
