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为改善工人在金属密闭容器内从事有尘毒作业的环境,预防中毒和尘肺的发生。我们研制了新型防尘防毒综合装置,使尘毒浓度低于国家标准,现报告如下。一、原理: (1)利用轴流风机将密闭容器内尘毒向外排放,造成内部负压条件;(2)利用空压机将密闭容器外部净化空气送风常送进防护头盔,形成空气幕正压条
In order to improve workers in metal-enclosed containers engaged in dust poisoning operations in the environment, to prevent poisoning and pneumoconiosis. We have developed a new dust-proof and anti-virus integrated device, so that dust concentrations lower than the national standard, are as follows. First, the principle: (1) the use of axial fans will be sealed airtight container dust poisoning outward discharge, resulting in internal negative pressure conditions; (2) the use of air compressors will be sealed airtight container outside the air supply to the protective helmet, forming air Curtain is a pressure bar