Environment-friendly boiler

The utility model relates to the technical field of boilers, in particular to an environment-friendly boiler which comprises a boiler body, a smoke discharge pipe, a preheating water tank and a combustor, a combustion chamber is arranged in the boiler body, and a plurality of flow guide plates are arranged on the inner wall of the combustion chamber. An air outlet is formed in the bottom of the combustion chamber; the combustor is arranged on the top of the combustion chamber downwards; one end of the flue gas discharge pipe is connected to the gas outlet; the preheating water tank is connected with the boiler body through a water inlet pipe, and a supply pump is arranged on the water inlet pipe. And the gas outlet end of the flue gas discharge pipe can exchange heat with the preheating water tank. According to the environment-friendly boiler, the heat exchange time can be effectively prolonged, the heat exchange effect is improved, and meanwhile heat in smoke can be recycled. 本实用新型涉及锅炉技术领域，具体涉及一种环保锅炉，包括锅炉本体、