315C Excavator Hydraulic System Caterpillar


Check Valve (Return Makeup) - Slow Return Check Valve

Usage:

315C AKE



图 1g01433821

控制阀室

(1) 至机油冷却器进口的管路

(2) 低速回油单向阀

(3) 旁通单向阀

(4) 自机油冷却器出口的管路

(5) 至液压油箱的回油管路

(6) 单向阀

低速回油单向阀 (2) 内置在单向阀 (6) 中。 低速回油单向阀 (2) 位于回油回路主控制阀和液压油箱之间。 低速回油单向阀限制回油流量。 这一限制会导致回油管路和补给管路中压力升高。

如果回转马达中产生气穴,回油管路流出的油会流进补给管路。 这部分补偿油供至回转马达进口,以防止回转马达出现气穴。

注: 有关补给操作的更多信息,请参阅系统操作, "机油补偿(回转系统)"。

流过低速回油单向阀 (2) 的回油流量分流到两条流路。 一部分机油经过进口油管 (1) 流向液压油冷却器。 冷却的机油从液压油冷却器流过出口管路 (4) ,并经过回油管路 (5) 流向液压油箱中的回油滤清器。 剩余的机油从低速回油单向阀 (2) 流过旁通单向阀 (3) ,然后流向液压油箱中的回油滤清器。 旁通单向阀 (3) 内置在单向阀 (6) 中。

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