Check valve

The utility model discloses a check valve includes at least: valve body, valve clack and transfer line, the valve body is hollow structure, the valve clack sets up among the hollow structure, the valve clack is fluted, and upwards there is free chamber the bottom of recess in the footpath, the transfer line sets up it is in the recess, right exert pressure in the recess bottom. The utility model discloses it is fluted at the valve clack, upwards there is free chamber in the bottom of recess in the footpath for hold dregs, thereby avoided the jamming of valve clack with the transfer line, not only avoided the production noise, but also guaranteed going on smoothly of safety in production. 本实用新型公开了种止回阀，至少包括：阀体、阀瓣及传动杆；所述阀体为中空结构；所述阀瓣设置在所述中空结构中；所述阀瓣有凹槽，且在所述凹槽的底部在径向上有空腔；所述传动杆设置在所述凹槽中，对所述凹槽底部施加压力。本实用新型在阀瓣有凹槽，在凹槽的底部在径向上有空腔，用于容纳渣滓，从而避免了阀瓣与传动杆的卡滞，不仅避免了产生噪声，而且还保证了安全生产的顺利进行。