Food drying machine capable of recovering heat

Abstract

The invention discloses a food drying machine capable of recovering heat, and relates to the technical field of drying machines. The food drying machine capable of recovering the heat comprises a base; a cylinder, an air heater and an air blower are fixedly arranged at the top end of the base; tan air outlet of the air blower communicates with an air inlet of the air heater; an air outlet of the air heater communicates with a first connecting pipe, and the first connecting pipe communicates with elbows; the ends, away from the first connecting pipe, of the elbows communicate with air nozzles; and the ends, far away from the elbows, of the air nozzles penetrate through a base plate of the cylinder and communicate with an inner cavity of the cylinder. The food drying machine has the advantages that when waste gas which contains the heat and is discharged through an air outlet cylinder passes through heat pipes, the heat pipes can be heated, the air can be heated when passing through an exchange chamber, the heated air then enters the air blower, and therefore the energy consumption of the machine can be greatly reduced, energy can be saved, the environment can be protected, the use cost of a user can be lowered, and the pollution to the environment can be reduced.

Description

technical field [0001] The invention relates to the technical field of drying machinery, in particular to a food dryer capable of recovering heat. Background technique [0002] The dryer has several modes such as belt drying, drum drying, box drying, and tower drying; the heat source includes coal, electricity, gas, etc.; the drying process of materials has hot air flow type and radiation type, etc. , hot air drum drying is that the hot air flow moves forward from the tail, fully contacts with the material, and makes full use of the heat transfer through heat conduction, convection, and radiation; the heat energy is directly transferred to the material, so that the moisture of the material is continuously evaporated in the cylinder, and the material is fed into the cylinder. The air-introduction device at the outlet draws out a large amount of water and wet air to prevent secondary pollution caused by dust discharge; through internal spiral stirring, sweeping and lifting, th...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a food dryer capable of recovering heat, which solves the problem that the heat of the dryer cannot be recovered

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