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美国Permco Inc 公司研制了一种新结构的齿轮泵。这种齿轮泵采用了能进行径向压力平衡的分流侧板,如图1所示。在侧板圆周上有压力连通沟槽,在泵的吸油侧有压力作用面积。它将泵输出压力引自吸油口附近的齿腔,这样可作为一个力以抵消轴承负载,见图2。Permco 公司发现,这个力能减轻30～35%的轴承负荷。在压力达到280bar 的台架试验中,结果令人满意。该泵的推荐工作压力为230bar,如带有轴套及超高压密封,该泵工作压力可达250bar,理论排量为12～198mL/r。这种分流侧板的另一好处是能补偿一般
Permco Inc. of the United States has developed a new structure of the gear pump. This gear pump uses a radial pressure-balanced splitter side plate, as shown in Figure 1. There is a pressure communicating groove on the circumference of the side plate with a pressure acting area on the suction side of the pump. It draws the pump output pressure from the tooth chamber near the suction port, which acts as a force to counteract the bearing load, see Figure 2. Permco company found that this force can reduce 30 to 35% of the bearing load. In bench tests up to 280 bar, the results were satisfactory. The pump recommended working pressure of 230bar, such as with a sleeve and ultra-high pressure seal, the pump working pressure up to 250bar, the theoretical displacement of 12 ~ 198mL / r. Another benefit of this shunt side plate is its ability to compensate