Fluid level control oil return mechanism

The utility model relates to a fluid level control oil return mechanism, it includes low -pressure circulation barrel, the motion subassembly, the movable block, the movable block is in vertical direction up -and -down motion is followed down in the effect of motion subassembly, and it has the liquid level detection device and return oil pipe to go back fixed mounting in the low -pressure circulation barrel, it has the oil gallery to return last the opening of oil pipe. The utility model discloses a set up the movable block that to follow motion subassembly up -and -down motion in low -pressure circulation barrel, set up the liquid level detection device to liquid level signal collection, according to the height of liquid level, adjust the height in low -pressure circulation barrel of movable block, realized liquid level control through the movable block by the volume change that liquid floods. Change and when leading to liquid to have upper and lower altitude variation, through adjusting the motion subassemb