| 摘要 |
PROBLEM TO BE SOLVED: To easily wash an inner peripheral surface, to secure a heat transfer area, and to wash a heat transfer surface by rotating liquid feeding bodies to raise and jet liquid with the lower openings thereof being immersed under the surface of the liquid and the upper openings thereof being exposed from the surface of the liquid, and spraying it to the inner peripheral surface of a vessel body or a space above the surface of the liquid. SOLUTION: In a tank body T, each of trough like bodies 1 which are liquid feeding bodies is obliquely fixed to the head of a fitting utensil 2 with a lower opening 11 thereof is closer to an agitating shaft 3 than an upper opening 12 thereof, and the lower opening 11 of the trough like body 1 is immersed in liquid in the tank body T, and the upper opening 12 is opened to a space above the surface of the liquid Le in the tank body T. By rotating the trough like body 1 by a motor M through the agitating shaft 3, the liquid in the tank body T is introduced into the trough like body 1 from the lower opening 11 to raise it in it and is jetted from the upper opening 12 to spray it. At this time, the changing surface of the liquid in the tank body T is detected by a level gage L, and based on the detection signal, the rotation speed of the motor M is controlled by a controller Ad through an inverter In.
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