论文部分内容阅读
无蜗壳低速离心泵是一种适合人力、风力机直接驱动的低速离心提水装置。 1.结构与工作原理最简单的手动无蜗壳低速离心泵,可用一根管子弯制而成,上部分岔的形式如图所示。吸水管1兼做转轴,由上轴承7和下轴承8固定。吸水管下连底阀4,上通上翘的离心管2。离心管末端有一上升回弯6。出水口5的方向与旋转方向相反。若在出水口处装上适当上仰的喷头并使泵体倒转,即可变提水泵为喷灌机。起动前,通过出水口向泵内注水。由于离心管上翘,可使注入的水顺利充满泵内空间。这种泵的离心管有很大的旋转半径,只要有很低的转速就能产生足够的提升力。例如,在扬程为2米、出水口旋转半径为1米的条件下,转速略高于1转/秒就能将水提上来。回弯的作用是在起动转速低于始出水转速时,使出水口内的水在离心力的作用下
The non-volute low-speed centrifugal pump is a kind of low-speed centrifugal water lifting device that is suitable for direct driving of manpower and wind turbine. 1. Structure and working principle The simplest manual non-volute low-speed centrifugal pump can be bent by a pipe, the form of the upper bifurcation as shown. The water pipe 1 also serves as a shaft, which is fixed by the upper bearing 7 and the lower bearing 8. Suction pipe bottom valve 4, on the upturned centrifuge tube 2. There is a rise back bend 6 at the end of the centrifuge tube. The direction of the water outlet 5 is opposite to the direction of rotation. If installed at the outlet nozzle properly upturned and the pump body upside down, you can change the pump for the irrigation machine. Before starting, water is injected into the pump through the water outlet. As the centrifuge tube upturned, the injected water can fill the pump space smoothly. The pump centrifuge tube has a large radius of rotation, as long as a very low speed can produce sufficient lifting force. For example, with a lift of 2 meters and a water outlet rotation of 1 meter, the water can be raised slightly faster than 1 rpm. Bending back to the role of the starting speed is lower than the initial water speed, the outlet of the water in the centrifugal force