1、體積小，材料消耗少，操作與檢修方便。
1, small size, less material consumption, easy operation and maintenance.
2、產塵點固定、產塵氣流速度較小且連續(xù)產塵的地點。
2, the production of dust points fixed dust production airflow smaller and continuous dust production sites.
3、采用氣幕抑制污染物擴散，具有氣量小，抗干擾能力強，不影響工藝操作、效果好的特點。
3, the use of air curtain to suppress the proliferation of pollutants, with a small amount of gas, anti-interference ability, does not affect the process operation, the effect is good.
4、集氣罩的吸氣方向與污染氣流運動方向一致，充分利用污染氣流的初始動能。
4, the hood suction direction and the direction of movement of contaminated air flow, take full advantage of the initial kinetic energy of the polluting air flow.
