Double-layer waste gas collection hood
A waste gas collection, double-layer technology, applied in the direction of dust removal, cleaning methods and appliances, chemical instruments and methods, etc., can solve the problem of poor suction in the edge area of the waste gas collection cover, and achieve good waste gas collection effect and uniform suction distribution
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[0012] A double-layer exhaust gas collection cover, comprising a cover body 1 and an air introduction port 2 at the center of the cover body 1, the air introduction port 2 is externally connected with an induced fan 3, and the cover body 1 has a double-layer structure with two inner and outer layers.
[0013] Further, the cross section of the cover body 1 is made into a circle.
[0014] Further, a regulating valve 4 is provided at the central air inlet 2 of the cover body 1 .
[0015] The working process of the double-layer exhaust gas collection cover is: when the gluing machine is working, the induced draft fan 3 is turned on. At this time, the air flow flows from the lower part of the cover body 1 and the middle gap between the two layers of the cover body 1 and is discharged from the air introduction port 2, because the two Layer structure, the negative pressure formed at the edge will be relatively large, and the suction force will be stronger, which overcomes the origina...
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