Clean plate type preheater

The utility model relates to the technical field of preheaters, and discloses a clean plate type preheater which comprises a left supporting plate and a right supporting plate. The utility model discloses a clean plate type preheater. A first vent pipe and a first vent hole are arranged; cold gas enters from the first ventilation pipe at the top and passes through the two first ventilation holes;the gas is discharged from the bottom first ventilation pipe; hot gas enters from a second ventilation pipe at the top and passes through two second ventilation holes; the gas is discharged from the bottom second ventilation pipe; heat exchange is carried out between the stacked heat exchange plates; many dusts may be brought therein, the vibration foil is arranged; when gas passes through the heat exchange plates, the vibration foils are blown to vibrate, the vibration foils on the heat exchange plates vibrate at the same time, dust can be vibrated off, electrostatic dust is adsorbed to the outer sides of the vibrati