2results about How to "Guaranteed negative pressure" patented technology

The utility model provides a kind of air leakage screw conveyer device, the utility model relates to screw conveyer mechanism technical field, including screw conveyer assembly, driving mechanism, protection subassembly and negative pressure component;The screw conveyer assembly includes the shell extending along left and right direction and the screw conveyer rod piece extending along left and right direction;By the setting of negative pressure component, in negative pressure component, shell and negative pressure storehouse interior pressure is lower than external atmospheric pressure, if feeding and discharging place are completely open, outside air will rush in a large amount, it will lead to unable to maintain the required vacuum degree, and the air that rushes in can interfere with the stable flow of material, even cause blockage, and in the design, second helical blade segment cooperates pressure door, and a dynamic material seal is formed in shell interior jointly.The material with high filling degree itself becomes the barrier to prevent air from entering, achieving the effect of physical sealing, thereby ensuring the negative pressure state inside the system.