FIELD: manufacturing technology.
SUBSTANCE: dual swirling mixing device comprises: mixing pipe (11) used to mix exhaust gas and urea; conical mixer comprising conical tube (12) having outlet end extending into mixing pipe (11), and a plurality of convergent swirling plates (13) located on the side wall of conical tube (12) and along the circumference of the side wall; fan blades located at output end of conical tube (12).
EFFECT: dual swirling mixing device can effectively prevent such problems as urea light deposition, bad spraying and uneven mixture of exhaust gas and urea.
2 cl, 5 dwg
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