The aseptic powdery feedway and its application method that butterfly-valve, butterfly-valve are constituted

摘要

The invention relates to a butterfly valve, a sterile powder conveying device composed of multiple butterfly valves and a using method of the sterile powder conveying device. Some defects of existing split-type butterfly valve conveying technology include that after powder conveying, the inner surface of a butterfly valve may have powder residue, which may cause damage to sealability of the butterfly valve and then lead to damage to product sterility. The butterfly valve comprises a valve body (1) and a valve clack (2). The butterfly valve is characterized in that at least one sprayers (3) for purging the inner surface of the butterfly valve are mounted on the valve body (1) and connected with an inlet valve positioned outside the valve body (1); a water drainage groove which is arranged horizontally is formed in the middle of the valve clack, one end of the water drainage groove is closed while the other end of the same is open to form a water outgoing end, and at least one water drainage hole communicated with the water drainage groove is formed in the valve clack (2); the sprayers (3) are positioned above the water drainage groove. After powder conveying is completed, corresponding media can be fed to online clean, sterilize and dry a non-sterile area of a butterfly valve combination so as to realize repeated sterile docking.