A Double Heat Exchange Chamber Grain Drying Hot Air Stove

Abstract

The invention discloses a grain-drying hot-air furnace with two heat exchange chambers. The grain-drying hot-air furnace comprises a cylindrical furnace body and a combustion chamber. The grain-drying hot-air furnace is characterized in that a first heat exchange chamber and a second heat exchange chamber are arranged in the furnace body; the first heat exchange chamber is arranged at the upper part of the combustion chamber; the second heat exchange chamber is arranged at the periphery of the furnace body; the hot-air furnace adopts a rotary grate; a radioactive arch and a returning arch are arranged at the top part of the combustion chamber; a preheating jacket is arranged between the outer wall of the combustion chamber and the second heat exchange chamber; and a thermocouple is arranged in the combustion chamber, and a secondary air pipe is configured. Compared with the prior art, the grain-drying hot-air furnace has the advantages that the automation degree is high, the feeding is uniform, and the hot-air output power fluctuation of the hot-air furnace is small; by matching of the radioactive arch with the secondary air pipe and the arc-shaped returning arch, the retention time of flue gas in the combustion chamber can be increased, the fuel combustion efficiency is high, the transpiration action of smoke dust is reduced, and the heat exchange efficiency and the reliability of the heat exchanger are improved; by arrangement of the two heat exchange chambers, heat exchange tubes made from different materials can be adopted; and the hot-air furnace is compact in structure, high in heat exchange efficiency and low in cost.

Description

technical field [0001] The invention relates to the technical field of grain drying, in particular to a grain drying hot air stove with double heat exchange chambers. Background technique [0002] With the transformation of my country's grain from rough retail management to intensive grain management, it is difficult to meet the requirements of grain drying in the past by manually drying the grain moisture to keep the grain moisture below the safe storage moisture. The grain drying hot air stove can provide hot air for grain drying, which is the most important equipment in the grain drying equipment. The performance level of the grain drying hot air stove is directly related to the quality of grain drying. Therefore, the research and design of a highly automated, efficient and environmentally friendly grain drying hot air stove has broad application prospects and far-reaching social significance. [0003] With the requirements for grain quality, the grain drying hot air sto...

AI Technical Summary

Problems solved by technology

Most of the traditional grain drying hot air stoves are hand-fired stoves, but the structural characteristics of the hand-fired stove itself lead to a low degree of automation of the grain drying hot air stoves, and the output hot air temperature fluctuates greatly, which directly leads to low grain drying efficiency.

In addition, most grain drying hot air stoves do not have a combustion chamber temperature detection system, resulting in high temperature in the combustion chamber, reducing the life of the furnace body and the life of the heat exchanger, and increasing the maintenance cost of the hot air stove

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