| 摘要 |
<p>The nozzle (10) has a nozzle body (20) including a nozzle insert (30) e.g. passive rotary body, with blades (31) and a hollow shaft (32), where the nozzle body has a borehole (21) and the nozzle insert has diameter less than or equal to diameter of the nozzle body. The nozzle body is provided with a connecting shaft (60), and the hollow shaft of the nozzle insert is attached to the connecting shaft, where the nozzle body has a conical retainer (40) and a cone (50). The nozzle insert is arranged between the conical retainer and the cone.</p> |
