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风阀是跳汰机重要的组成部分，它控制着跳汰机的脉动周期和频率，它的调整直接关系着跳汰机的分选效果。我国多数选煤厂使用的是９０年代国内先进产品──数控风阀，数控风问与卧式风阀相比具有调整方便和开启时间短（只有０．０２ｓ）的优点，并可随着煤质的变化随时选择不同
Air valve is an important part of the jig, which controls the pulsation cycle and frequency of the jig, and its adjustment is directly related to the sorting effect of the jig. Most coal preparation plants in China use 90 advanced domestic products ─ ─ numerical control air damper, compared with the horizontal air valve with easy to adjust and open the short time (only 0.02s) advantages, and with the coal Quality changes at any time choose different