Intelligent agricultural irrigation valve sealing structure

The utility model provides a valve sealing structure applied to the field of agricultural irrigation, which comprises an eccentric semi-spherical valve plate, an O-shaped ring, a hard sealing gasket, a soft sealing gasket, a retainer ring, a valve body, a spring and an end cover, and adopts soft sealing (rubber) and hard sealing (polytetrafluoroethylene) to realize absolute sealing of the valve structure under various pressure conditions. The spring pushes the two sealing gaskets to be tightly matched with the valve plate through elastic force, and valve leakage caused by the fact that the sealing gaskets are elastically aged and lose the elastic force can be effectively improved. 本实用新型提供一种应用于农业灌溉领域的阀门密封结构，含有偏心半球阀板、O型圈、硬密封垫、软密封垫、挡圈、阀体、弹簧、端盖，采用软密封（橡胶）+硬密封（聚四氟乙烯）两道密封，实现该阀门结构在各个压力条件下的绝对密封。所设的弹簧依靠弹力推动两道密封垫与阀板紧配合，可有效改善因密封垫弹性老化失去弹力造成的阀门泄露。