| 摘要 |
PURPOSE:To detect and obviate an abnormal state caused by a jam of a foreign matter in an early stage by forming the device by connecting a foreign matter detecting means for detecting a fact that pinballs are stagnant on a drainboard in a selecting device, and a means for displaying it to the outside or a means for informing it. CONSTITUTION:A selecting device 5 selects mixtures discharged from a discharge port 4 to pinballs Pa and polishing grains Pb, and is formed by connecting a foreign matter detecting means for detecting a fact that the pinballs Pa are stagnant on drainboards 7a, 7b in this selecting device 5, and a means for displaying it to the outside or a means for informing it. When the pinballs Pa are flowing down normally, the foreign matter detecting means scarcely operates, but as soon as the foreign matter detecting means detects the pinballs Pa which are stagnant like a bridge, the connected outside display means or informing means is operated and abnormality of a machine is informed to the outside. In such a way, trouble of a store can be prevented in advance. |
