| 摘要 |
PURPOSE:To prevents the dripping of a washing liquid at the tip of nozzles regardless of difference in the height among the nozzle tips, by positioning an open end of a shunt passage communicating with each nozzle below the tips of the nozzles. CONSTITUTION:After the supply of a washing water, when a valve 42 is closed and a valve 53 opened, a drain tube 54 allowed to communicate with all of supply nozzles 44-47. As the tip of a tube 54 is positioned below the tips of the nozzles 44-47, a pressure difference is generated between the surface level of a retained washing water in the tube 54 and those of residual washing waters in the nozzles 44-47, which permits the reversing of the washing water left in the tube connected to these nozzles 44-47 to a branch 43 and the washing water thus reversed flows to a receiving tank 55 from the tube 54 until a balance is reached. Thus, this prvents accidental dripping of the washing water left from the tips of the nozzles 44-47 after the pouring of a washing water. |
