Lubricating and cleaning device for oil coke slurry pump and injector of compression-ignition internal combustion engine

The utility model discloses a lubricating and cleaning device for the oil coke slurry pump and the injector of a compression-ignition internal combustion engine. The device comprises the plunger oil coke slurry pump, the oil coke slurry injector, a lubricant pump, a lubricant storage container, a filter, a Y-joint A, a Y-joint B and a lubricant pipeline, wherein the oil outlet end of the lubricant storage container is connected with the filter through the lubricant pipeline; the other end of the filter is connected with the lubricant pump through the lubricant pipeline; the other end of the lubricant pump is connected with the first end of the Y-joint A through the lubricant pipeline; the other two ends of the Y-joint A are respectively connected with the oil inlet interface of the oil coke slurry pump and that of the oil coke slurry injector; the oil outlet interface of the oil coke slurry pump and that of the oil coke slurry injector are connected with the Y-joint B; the third end of the Y-joint B is connec