Efficient and energy-saving heat exchange device

The utility model discloses an efficient energy-saving heat exchange device which comprises a heat exchange tank, the outer side wall of the heat exchange tank is communicated with an air inlet pipe, the other end of the air inlet pipe is communicated with a fixing cylinder, an activated carbon adsorption plate is installed in the fixing cylinder, and a filtering bin is arranged below the fixing cylinder. Three evenly-distributed filter cartridges are arranged in the filter bin, the tops of the filter cartridges communicate with connecting pipes penetrating through the upper end face of the interior of the filter bin, by starting an air blower, waste gas can be introduced into the filter bin through a ventilation pipe, and at the moment, dust in the waste gas can be filtered through the three filter cartridges; and when the waste gas is introduced into the heat exchange tank, in the heat exchange process of the heat exchange tank, the dust in the waste gas can be prevented from falling on the heat exchange pi