The utility model relates to lubricating oil filling technology field especially lubricating oil filling device with prevent trickling structure, including base, the top of base is provided with
oil storage tank, the bottom of
oil storage tank is provided with filling
pipe, the bottom outside of filling
pipe is provided with multiple groups of negative pressure hole, the top of negative pressure hole is provided with worm wheel, worm wheel and filling
pipe rotatory connection, the inside of worm wheel is provided with scraper, the utility model discloses through the mode of negative pressure suction, through the
oil storage tank on base storage lubricating oil to be filled, remove and send the
oil tank to be filled to the below of filling pipe, through filling pipe pour lubricating oil in the oil
storage tank into the
oil tank, rotate worm wheel and drive scraper rotation, scraper close filling pipe inner wall rotation and scrape
residual oil, produce negative pressure suction
residual oil in filling pipe through negative pressure hole, avoid lubricating oil to remain in filling mouth pipe wall, keep the
working environment clean and neat, reduce cleaning cost, thereby effectively enhance device practical value.