Grain drying device

Abstract

The invention provides a device for grain drying, which mainly includes a hot air radiation bin and a heat source generator located therein, wherein the heat source generator includes a pulse burner and an infrared radiator. The grain drying device of the invention combines pulsating combustion, infrared radiation and hot air convection to simultaneously heat the grains by side-heating infrared radiation and high-frequency hot air convection with high temperature and high frequency oscillating airflow. Compared with the traditional method, the device has low fuel consumption rate and low power consumption rate, and the drying precipitation rate is increased, which greatly improves the drying efficiency.

Description

technical field [0001] The present invention relates to a drying device, more specifically, relates to a grain drying device which adopts a pulse burner as an initial heat source and combines far-infrared radiation and convection heating. Background technique [0002] Grain drying research is an important research content in the field of agricultural product processing, and has a very broad application market and prospects. Traditional grain drying often adopts mechanical hot air drying, which has long drying time, high energy consumption, and easy pollution. After drying, the grain quality is low, and heat damage often occurs. When drying rice, it will also cause a high waist burst rate. , Poor palatability, low rice yield and other shortcomings. [0003] The far-infrared radiation drying method transmits energy in the form of electromagnetic waves, which has the advantages of direct and rapid heating, clean and hygienic, energy-saving and time-saving, and small footprint,...

AI Technical Summary

Problems solved by technology

Traditional grain drying often adopts mechanical hot air drying, which has long drying time, high energy consumption, and easy pollution. After drying, the grain quality is low, and heat damage often occurs. When drying rice, it will also cause a high waist burst rate. , poor palatability, low rice yield and other shortcomings

[0003] The far-infrared radiation drying method transmits energy in the form of electromagnetic waves, which has the advantages of direct and rapid heating, clean and hygienic, energy-saving and time-saving, and small footprint, but has the disadvantages of large energy consumption and electric heating.

As a widely used traditional drying method, the hot air convection drying method uses air as the heating medium to contact the grain for heat and mass transfer. It has the advantages of uniform drying, mature technology, and extensive heat sources, but there are low drying efficiency and easy pollution. insufficient

The pulsating burner can produce a dry heat source with high-temperature clean pulsating airflow. It has the advantages of high combustion intensity, complete combustion, low emission pollution, high thermal efficiency and large heat transfer coefficient, but has the disadvantage of high working noise.

[0004] Side-heating infrared radiation and hot air convection grain drying technology is a new type of grain drying machine jointly developed by Japan Agricultural Association and four grain dryer manufacturers after 2000. equipment, but because the machine uses 0# diesel burner as the dry heat source, the diesel burner with complex structure has high manufacturing cost, incomplete combustion, and oily smoke

And because diesel is used as fuel, the airflow used for convective drying will inevitably be polluted by diesel to a certain extent, so this kind of equipment has defects in unit energy consumption, drying efficiency, cleanliness and other indicators.

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