To provide a stirring device 6 where the inside of a sewage tank is stirred utilizing pressure-fed water from a submerged pump 2, in which, as the operation of the submerged pump 2 for a fixed time after the start of driving is realized, there is no need of a medium such as oil.
The stirring device 6 comprises: a valve body 10 where a flow passage 66 is closed in a valve chamber 67, and, on the other hand, the flow passage 66 is opened in a shunting chamber 68; an extruding mechanism 81 of extruding the valve body 10; and a locking mechanism 84 of allowing the extrusion of the valve body 10 by the extruding mechanism 81 at the time when the pressure-fed water starts to flow in the flow passage 66, and on the other hand, forbidding the extrusion at the time other than that.
Hiroshi Koyama
Hiroshi Takeuchi
Takahisa Shimada
Yuji Takeuchi
Katsumi Imae
Atsushi Fujita
Kazunari Ninomiya
Tomoo Harada
Iseki Katsumori