青海机床铸造厂设计制造的、配大型震动落砂机(六台L128组合)用的罩顶移动式半封闭吸尘罩(见图)及其通风除尘系统,已于一九八一年四月底在该厂重型铸造车间投产使用。经生产实践考验表明:该除尘装置操作方便,除尘效果良好,深受工人欢迎。 A semi-enclosed hood (see photo) and a ventilation and dedusting system designed and manufactured by Qinghai Machine Tool Foundry with a large-size vibrating shakeout machine (six L128 combination) and its ventilation and dust removal system were completed at the end of April 1981 Heavy-duty foundry in the plant put into operation. The production practice tests show that: the dust removal device easy to operate, dust removal effect is good, welcomed by the workers.