One-way valve for chemical delivery

Abstract

The utility model relates to a one-way valve for chemical delivery, including first sleeve and second sleeve. First sleeve is equipped with first axle hole, and second sleeve is equipped with second axle hole, and two axle holes are all divided into two sections of different diameters. The one end of second sleeve is connected through screw thread in the large diameter section of first axle hole. The large diameter section in second axle hole is equipped with baffle, limit stop and return spring in proper order, and a plurality of through -holes are opened on limit stop, and return spring drives limit stop to move to the direction away from first sleeve, thereby making baffle cut off large and small diameter section. When liquid flows from the small diameter end of second axle hole, can promote baffle compression spring and realize the flow through, when reverses, spring force makes baffle close to step face, realizes sealed cut -off. The scheme separates sealing and guiding structure, improves function stability and reliability.