针对传统数控气动风阀的不足,笔者研制了一种新型煤用跳汰机双联动数控风阀,采用步进电动机替代传统的气动,同时控制和驱动风阀进气阀和排气阀的启闭。应用实践表明,该风阀明显优于传统数控气动风阀,具有结构紧凑、瞬间进排风且维护升级简单等特点,为洗选煤企业跳汰机数控风阀系统的升级改造提供了有益借鉴。 In view of the deficiency of the traditional pneumatic pneumatic air valve, the author developed a new dual-action pneumatic pneumatic valve with coal jig, using the stepper motor instead of the traditional pneumatic, while controlling and driving the intake valve and the exhaust valve close. The application practice shows that the damper is obviously superior to the traditional pneumatic pneumatic valve with the features of compact structure, instantaneous intake and exhaust ventilation and simple maintenance and upgrade, which provides a useful reference for the upgrade and reconstruction of the NC pneumatic valve system of the washing and dressing coal enterprise. .