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一种主要由内齿轮、外齿轮和月牙体三部分构成的可逆型(泵轴不论转向如何,油泵吸油出油方向不变)内齿轮油泵,用于制冷压缩机的润滑系统中。特点是噪音小、吸空力强、可靠性好。该泵结构如图a所示,该泵是转子型油泵,比通常的转子泵多了一套能使外转子中心改变180°位置的机构,该机构是保持架、挡销、锥弹簧组成这一机构。图b、c是泵轴不同转向时的两种工作状态。图b表示泵轴反时针转,转子腔向上偏心时的工作情况;图c是轴顺时针转,转子腔向下偏心时的工作情况。从图上看出,不论泵轴转向怎样,右边的密封工
A mainly by the internal gear, external gear and crescent body composed of three parts of the reversible (regardless of steering shaft, oil pump oil in the same direction) internal gear pump for refrigeration compressor lubrication system. Characterized by low noise, strong suction, good reliability. The pump structure shown in Figure a, the pump is a rotor-type pump, rotor pump than the usual set of changes in the outer rotor can be 180 ° position of the body, which is the cage, retaining pin, cone spring composition A body. Figure b, c is the steering shaft when the two different working conditions. Figure b shows the pump shaft anti-clockwise turn, the rotor chamber eccentric upward work; Figure c is the clockwise rotation of the shaft, the rotor chamber down eccentric work. Seen from the figure, no matter what the pump shaft steering, the right seal workers