本文介绍了S114及S116老式辗轮式混砂机存在的主要问题，并提出了对其进行技术改造的方案。
Main shortcomings of old fashioned mullets: S114 and S116, are described. Technical reforming plans as remedy for the faults are also presented.
通过对辗轮式混砂机使用情况调查，弄清了S114、S116一类老式辗轮式混砂机所存在的主要问题，提出了改造方案。
Modifying project had been made from the consideration of overcoming problems on the old model sand roller mills such as S114 or S116 types.
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