Grinding dust collector design and the application note

Grinding dust precipitator note (1) the design and application of inhaled airflow velocity decay quickly, and blow out air flow speed slow attenuation. Inhale air velocity of airflow in the external suction cap esrtuary decay quickly, inhale air flow in the suction mouth 1 times the diameter, the axis on the air velocity has been reduced to 10% of inspiratory mouth wind speed, blow out in the air, Jet stream) , only when the distance up to 30 times the diameter, to reduce to 10% export wind speed. Therefore, when an external gas-collecting hood and pollution source distance is larger, rely on the suction hood at the mouth of the role is often can't control the diffusion of pollutants, can blow to flow together to well, is set in the at the same time, on the other side of the side suction blow out air flow, form the air curtain forming type to blow a gas-collecting hood in order to improve the control effect, to prevent pests from outward. (2) grinding dust precipitator is rely on the joint action of blow and exhaust airflow pests control and conveying suction blowing gas collecting cover is suitable for the groove width of more than 1200 mm slot, but do not apply to the following three situations: a. Frequently or removed from a slot in the processing; b。 Groove surface barrier to disrupt blow out air ( Such as hanging fixture, reveal surface processing, etc. ) ; c。 The operator often when trough and on both sides of the work. (3) grinding dust precipitator gas-collecting hood has higher efficiency than normal. Process of cold gas collecting cover cover mouth wind speed attenuation quickly with the increase of the distance, the ventilation system of energy utilization rate is very low. Blow out blow suction gas collecting cover mainly use jet to improve the control of pollution sources in the wind speed, the characteristics of the jet velocity distribution is more concentrated, energy or kinetic energy effective utilization can be improved. Than to receive type gas-collecting hood has a stabilizing effect. Accept type gas-collecting hood airflow generated from the process to collect pollution gases, such as hanging collect thermal cover mouth, but sometimes, the stream is not stable, the disturbance of air flow, may escape hood outside blow blow out air suction gas collecting cover can be designed according to the need to, can keep the stable effect in the run. (4) of breathing mask is suitable for large area, the spread of pollution sources. When general gas-collecting hood for a large range of area, diffusion velocity is larger is difficult to control the pollution sources, wind suction gas-collecting hood will use jet effective range, expanding the scope of the control, improve the control speed. (5) puff port should be decorated at the side of the operator. In addition type to blow a gas-collecting hood in the application should also prevent blowing an obstacle, cause pollution gas evolution.