Vertical smoke tube type biomass boiler

Abstract

The invention relates to a vertical smoke tube type biomass boiler. The vertical smoke tube type biomass boiler is overall of a vertical structure, and comprises a boiler body. A combustion chamber is arranged on the lower portion in the boiler body, and a strile-back chamber communicating with the combustion chamber through a threaded smoke tube is arranged on the upper portion in the boiler body. A baffle is arranged in the threaded smoke tube in the axial direction, and a plurality of small holes in circular truncated cone shapes are formed in the baffle. A gas outlet is formed in the lower portion of the boiler body, and the strile-back chamber communicates with the gas outlet through a return smoke tube. A liquid inlet and a liquid outlet are formed in the boiler body, a liquid cavity communicating with the liquid inlet and the liquid outlet is formed in the boiler body, and the liquid cavity is in contact with the threaded smoke tube, the return smoke tube and the outer wall. The baffle is arranged in the threaded smoke tube, the multiple small holes are formed in the baffle, and by means of the arranged baffle, harmful matter can be further stopped from entering the strile-back chamber. Upward flowing of smoke cannot be stopped through the small holes formed in the baffle. Meanwhile, according to the structure, the flowing time of the smoke in the threaded smoke tube can be further prolonged, and heat exchange efficiency is further improved.

Description

technical field [0001] The invention relates to a vertical smoke tube biomass boiler, which belongs to the technical field of boilers. Background technique [0002] With the promotion and application of biomass pellet fuel. Due to its small footprint, convenient use, high efficiency, environmental protection and energy saving, the vertical biomass boiler has formed a certain market. The internal structure of each manufacturer varies greatly, and the boiler use effect and efficiency are also different. [0003] In order to improve the combustion efficiency of the furnace body, the existing vertical boiler generally adopts a double-return structure, but there is still room for further improvement in the combustion efficiency and heat exchange efficiency of this type of boiler. [0004] For this reason, someone improved the structure, adopted a vertical structure, and realized the heat exchange efficiency through the combustion chamber, the back-burning chamber, and the thread...

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Problems solved by technology

[0004] For this reason, someone improved the structure, adopted a vertical structure, and achieved heat exchange efficiency through the combustion chamber, the back-burning chamber, and the threaded smoke pipe connecting the combustion chamber and the back-burning chamber, and achieved good technical results. The threaded smoke pipe can improve At the same time, it can filter the impurities in the flue gas generated by the combustion chamber to a certain extent, but this structure still cannot filter harmful impurities more thoroughly. If harmful impurities enter the subsequent combustion chamber and return smoke pipe, it will affect the It causes some damage, so further improvement is needed

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