A bin-type high-efficiency food drying device with two-way alternate flow-through function

Abstract

The invention discloses a bin-type high-efficiency food material drying device with bidirectional alternate flow-through function, which comprises a heating device and a drying device. A dual-way reversing device is arranged between the heating device and the drying device. The device includes a box body, an actuator, a linkage shaft, an upper circulation air duct, and a lower circulation air duct. The upper circulation air duct and the lower circulation air duct are respectively equipped with an upper circulation air valve and a lower circulation air valve. The valves are arranged vertically and coaxially on the linkage shaft, and the linkage shaft is connected to the actuator; the outlet hopper of the drying device is provided with through-flow air holes. In the present invention, through the alternate opening and closing of the upper and lower circulation air valves of the double-way reversing device, the hot air circulates the drying material from top to bottom or from bottom to top, and the residual hot air comes out of the drying device and returns to the heating device to continue heating and drying the material. The air replenishing and dehumidifying valve device installed on the drying outlet pipe can accurately control the amount of air replenishing and dehumidifying at each stage of the baking process, which improves the drying efficiency, quality and heat utilization rate.

Description

technical field [0001] The invention belongs to the technical field of drying equipment, and in particular relates to a bin-type high-efficiency food drying device with bidirectional alternate flow-through function. Background technique [0002] Although the existing hot air drying equipment has the function of drying the corresponding materials, but in the structure design and drying process of the existing equipment, the material at the air inlet end close to the heat source dries faster, has a higher water loss rate, and even dies due to excessive temperature. The color deepens; while the material away from the heat source and close to the air outlet loses water slowly, the temperature is low, the material loses water unevenly, and affects the drying quality. In addition, the general drying equipment is of the external exhaust type, and the hot air is directly discharged into the air after use. The exhausted air also has a certain temperature, resulting in a certain waste...

AI Technical Summary

Problems solved by technology

[0002] Although the existing hot air drying equipment has the function of drying the corresponding materials, in the structural design and drying process of the existing equipment, the material at the air inlet end close to the heat source dries faster, has a higher water loss rate, and even dies due to excessive temperature. The color deepens; while the material away from the heat source and close to the air outlet loses water slowly, the temperature is low, the material loses water unevenly, and affects the drying quality. In addition, the general drying equipment is of the external exhaust type, and the hot air is directly discharged into the air after use. The exhausted air also has a certain temperature, resulting in a certain waste of heat energy. Therefore, it is the key to solve this problem to develop a bucket-type high-efficiency food drying device with simple structure, easy operation, and two-way alternate flow function. where the

Images