Portable welding smoke collector in the form of suction hood

Mobile welding smoke collector suction hood suction hood mobile welding smoke collector, in the form of a special form of cover is located in the side of the trough, is a kind of the more common form, 1) Portable welding smoke suction cover in the form of a collector, groove edge suction hood unilateral, bilateral and suction hood surrounding the form. ( 2) Mobile cover mouth form of weld fume collector suction hood, groove edge suction hood hood slits article can be divided into the type, the flat type and inversion type three forms the upper gas collection dust hood from above, put it in dust source because of its shape is an umbrella shape more, so they are called the canopy hood. Canopy hood and canopy hood canopy hood and thermal process is divided into cold process. The design of the portable welding smoke collector suction hood note 1, portable welding smoke collector suction hood on the premise of not impede technological operation, should as far as possible close to the pollutants placing signage at the mouth, as far as possible avoid horizontal airflow resistance. 2, the addition of flange around the exhaust hood mouth, can reduce exhaust air. In general, flange width is 150 ~ 200 mm3, gas collecting dust hood divergence Angle of a velocity distribution of cover mouth and enclosure has a great influence on the pressure loss. Divergence Angle in 30 ~ 60 & deg; , pressure loss minimum design external gas collecting dust hood, its expansion Angle should be less than a ( Or equal to) 60° When the mask size is bigger, difficult to meet the above requirements, should take appropriate measures. An exhaust hood is divided into, for example, a number of small exhaust hood: in the internal baffle; The seam is set on the cover mouth, request to sew the inlet wind speed in more than 10 m/s, and the static pressure of the speed of the wind speed is less than in the cabinet to sew 1/2; Set air distribution plate in the mouth, in order to ensure the effect of the gas dust hood.