虹吸管是一种简便的灌溉设备,但转移地块时,重新使用虹吸管时往往要向管内灌满水,这样既麻烦又费时间。同时要做到合理、经济地用水,必须了解输送了多少水。解决的办法是在虹吸管上加一个用尼龙绳连接的简单的挡板机构,如图1所示。虹吸管由直径为3.75厘米的两根管子组成,它们之间设一水表,以指示通过虹吸管的流量。两根管上都有可以调整的支脚。在管子的两端口上,用螺钉分别铰接一个带橡皮垫片的椭圆(因管口是斜切的,呈椭圆形)挡板。 Siphons are a simple type of irrigation equipment, but it is often cumbersome and time-consuming to divert the siphon to fill the tube when re-using the siphon. At the same time to achieve a reasonable and economical use of water, we must understand how much water has been delivered. The solution is to add a simple baffle mechanism with a nylon cord to the siphon, as shown in Figure 1. The siphon consists of two tubes of 3.75 cm in diameter with a water meter between them to indicate the flow through the siphon. Both tubes have adjustable legs. At both ends of the pipe, separate the oval (with a beveled, oval) baffle with rubber washers by screws.