| 摘要 |
<p>PURPOSE:To contrive a uniform sprinkling throughout the total length of an apparatus by setting a sub pipe, through which many spout holes are bored, in parallel with a main pipe, by connecting the top end of main pipe to the bottom end of sub pipe through a U-bend and by communicating the main and sub pipes with each other throughout the total length through by-pass pipes. CONSTITUTION:A main pipe 1, whose bottom end is connected to a delivery pump, is set in parallel with a sub pipe 2, through which many spout holes 5 are bored at specified intervals in a longitudinal direction throughout the total length, and the top end of main pipe 1 is connected to the bottom end of sub pipe 2 through a U-bend 3. Furthermore, the main pipe 1 and the sub pipe 2 are communicated with each other throughout the total length through by-pass pipes 4. It is possible, as a result, to carry out a uniform sprinkling throughout the total length, as the pressure in sub pipe can be made nearly constant throughout the total length, so that quantity and velocity of water ejected from every spout hole are made equal to each other respectively.</p> |
