1results about "Flue gas purification components" patented technology

The application discloses an environmental-friendly natural gas boiler with flue gas backflow supplementary heating, which comprises a natural gas boiler body, a cleaning mechanism, a drag plate and a cleaning ring. The bottom of the natural gas boiler body is provided with a combustion mechanism, the top of the combustion mechanism is installed with a heating water tank, and the left side of the combustion mechanism is connected with the cleaning mechanism through an exhaust pipe. The environmental-friendly natural gas boiler with flue gas backflow supplementary heating is provided with the cleaning mechanism on the top of the natural gas boiler body, so that the flue gas discharged from the exhaust port can be filtered conveniently, the inside of the cleaning mechanism is provided with a cleaning plate, the surface of the second filter screen can be cleaned conveniently, the blockage of the second filter screen is avoided, the filtering effect is improved, then the filtered flue gas is conveyed into the combustion mechanism through an insulation pipe, so that the flue gas can be heated, and the flue gas can be utilized again.