Negative pressure mechanism for intelligently controlling bag taking pressure

The utility model discloses a negative pressure mechanism for intelligently controlling bag taking pressure. The negative pressure mechanism comprises a negative pressure box body, a pressure monitoring meter, a second connector right angle connected to the negative pressure box body and used for being connected with the pressure monitoring meter, and two sets of guide pipes connected to the negative pressure box body. The upper ends of the two guide pipes are connected with pneumatic three-way ball valves, the pneumatic three-way ball valves are sequentially connected with first double nipples, reducing cylinders and second double nipples respectively, the top end of each second double nipple is connected with a filter, and the other end of each filter is connected with a leather hose connector. The lower end of the side face of each guide pipe is connected with a first electromagnetic valve, and the two first electromagnetic valves are connected to the negative pressure box body. According to the utility mo