The invention discloses an air exhausting and bag placing synchronous on-line device of a packing scale and an implement method. A fixed feeding
pipe is arranged in a bag clamping device in a nesting mode, an air
exhaust pipe which can not move penetrates through the middle of the feeding
pipe, the upper end of the air
exhaust pipe is connected with a draught fan, and the lower end of the air
exhaust pipe is connected with a
filter element through which only air can penetrate. An air exhaust opening is formed in the bag clamping device, and the bag clamping device can ascend and descend through a lifting mechanism and a guiding device. A packing bag is clamped on the bag clamping device and ascends and descends together with the bag clamping device, the bag is placed in a variable speed, and the packing bag can move relative to the air exhaust
pipe and the feeding pipe. The device which is safe and
environmentally friendly, and saves
efficacy is designed for solving the problems that in the process of
powder package,
powder spills to pollute the environment, gas mixed in the
powder enables the packing bag to expand to occupy the size to cause waste of packing materials, the bag bursts easily in the carrying process, the powder goes bad, the irregular bag shape affects the storage of the bag, and stacked bags
slip and fall easily. The series motion combination of weighing, air exhausting and bag placing in the variable speed is achieved, the efficiency of the air exhausting is high, environment dust is little, the
air content of the powder in the packing bag is small, the bag falling in the variable speed is stable, working intensity of taking the bag by workers is relieved, the bag does not fall, and the powder does not spill.