Energy-saving oil-heating boiler

The utility model relates to an energy-saving oil-heating boiler belonging to a combustion apparatus, which is mainly used for heating of the processing equipment of packing product. The utility model is characterized in that an oil layer is sandwiched between the external and inner layers of the shell of the boiler, an air flue in back dragon type and longitudinal and transverse heating fuel tubes both connected with the oil layer are arranged in the fire box, the lower part is equipped with a fire grate, a wind box is provided beneath the fire grate, the furnace body is equipped with three air flue checking and dust exhausting outlets of back upper, front upper and back lower of the boiler, two fire doors of feeding coal and ventilating, an oil filling pipe, an oil discharging pipe, an oil return pipe and oil drain pipe communicated with the oil layer running through the outer shell, a chimney, a thermometer and a discharge pipe are equipped on the top of the boiler. The utility model has the advantages of electricity-saving and energy-saving, fast heat diffusion, high temperature, slow cooling down, investment saving, etc.