| 摘要 |
<p>A filling nozzle for liquid or viscous material includes an outlet conduit through which the material flows, a valve mechanism that fits into the conduit to close the conduit, a knife edge connected to the valve mechanism, so that as the valve mechanism moves through the conduit the knife edge scrapes the interior surface of the nozzle and makes a wiping cut of any fibers or lumps in the material being dispensed through the nozzle, and an outlet in the valve mechanism so that a blast of pressurized gas can be directed through the valve mechanism to discharge any material remaining in the conduit downstream of the valve mechanism and knife edge.</p> |
