The entrance tube (1) rotary expedient for the inside flow adjustment (4 and 5) it possesses, it is connected by the chamber (2), at the same time, the entrance tube which the fluid which the drainage it should you do at least passes it has (1), the device.< Selective figure >Figure 1入口チューブ(1)内流量調整用回転手段(4、5)を具備する、チャンバー(2)に接続され、かつ、少なくとも排液されるべき流体が通過する入口チューブ(1)を備える、装置。【選択図】図1