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针对农业排灌机械的要求和特点 ,提出并分析了一种可广泛应用于农业生产的压力输送泵———活齿齿轮转子泵的结构形式及工作原理 ,分析了径向间隙自动补偿的实现方式 ,推导出了平均流量和瞬时流量公式 ,研究了该泵的流量特性。结果表明该泵具有流量大、流量脉动小、工作轮齿间无啮合力、运行平稳、噪声低、机械效率高及径向间隙可以自动补偿等诸多优点。在一定条件下 ,该泵可作为高扬程大流量农用水泵或两相流的压力输送泵 ,具有广阔的应用前景。
According to the requirements and characteristics of agricultural irrigation and drainage machinery, a type of pressure transmission pump --- a living tooth gear rotor pump which can be widely used in agricultural production is proposed and analyzed. The realization of automatic compensation of radial clearance is analyzed , The average flow rate and instantaneous flow rate formula are deduced, and the flow characteristics of the pump are studied. The results show that the pump has many advantages such as large flow rate, small flow pulsation, no meshing force between working gear teeth, smooth operation, low noise, high mechanical efficiency and automatic radial clearance compensation. Under certain conditions, the pump can be used as a high-lift high-flow agricultural pump or two-phase pressure pump, has broad application prospects.