喷咀喷咀是喷头的重要组成部分,它直接影响流量、射程、喷灌强度,雾化程度和均匀度等水力性能指标。因此合理确定喷咀的结构非常重要。 (一)喷咀流量水流由喷咀时出,如图一所示,在喷咀之外有收缩现象,用肉眼细心观察可以看到收缩(?)面C—C,喷咀锥角越大收缩越明显,设喷咀收缩断面为A_c,它与喷咀面积 Nozzle nozzle is an important part of the nozzle, which directly affects the flow, range, irrigation intensity, degree of atomization and uniformity and other hydraulic performance indicators. Therefore, it is very important to determine the structure of nozzle properly. (A) nozzle flow When the flow from the nozzle, as shown in Figure 1, there is shrinkage outside the nozzle, carefully observed with the naked eye can see the contraction (?) Face C-C, the greater the nozzle cone angle The more obvious contraction, set the nozzle contraction section A_c, it and the nozzle area