Design of a New Medium-High Pressure Valveless DTH Impactor
The pneumatic impactors use 2 types of air distribution systems:one with built-in air cylinder inlet,the other with exterior air cylinder inlet.While these 2 air distribution systems have legitimate structures and account for the lion's share of the domestic markets,there are some defects in them,such as hard-to-process inner cylinder,low manufacturing accuracy,many bended segments in inner circuits impairing the impact efficiency,the whole unit being too heavy,etc.The paper details the improvements on these impactors.The improved impactors feature significantly higher reliability,lower manufacturing difficulty for main parts and the weight of the whole unit being reduced 2.75 kg,being awarded the new practical patent.
DTH impactorimpactor improvementinlet groove of arc shapecylinder base
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