Circulating fruit and vegetable drying box with heat exchange device

Abstract

The invention discloses a circulating fruit and vegetable drying box with a heat exchange device, which comprises a long-strip box body, wherein the box body can be divided into a heating area, a high-temperature drying area and a low-temperature moisture removal area; a combustion furnace is arranged in the heating area; the heat exchange device is arranged above the combustion furnace; an open-close box door capable of feeding and discharging materials is arranged on a vertical wall on one side of the drying area; drying frames are arranged in the drying area; a driving system consisting of a drive motor, a circulating chain and guide pulley sets is arranged between the upper and lower drying frames; a plurality of drying vehicles are suspended on the circulating chains at certain intervals; the drying frames are provided with fixed slide rails; and pulleys are arranged below frames of the drying vehicles and slide in fit with the slide rails of the drying frames. The circulating fruit and vegetable drying box with the heat exchange device fully isolates fruits and vegetables from flue gases produced by combustion in a drying process due to heat exchange technology, ensures more uniform drying of products because a hot-air pipeline, a circulating wind pipe and the rolling circulating driving system are laid, has the advantages of energy-saving property, environmental protection and high product quality, and can greatly save labor and reduce production cost.

Description

technical field [0001] The invention relates to a fruit and vegetable drying equipment, in particular to a circulating fruit and vegetable drying box with a heat exchange device. Background technique [0002] Fruit and vegetable drying technology is of great significance for the deep processing of agricultural products and the increase of added value. The traditional drying device generally uses the hot gas generated by the combustion of fuel (such as firewood, coal, gas, etc.) to directly dry fruits and vegetables. Although the hot gas has undergone a certain settling and purification, there are still a large amount of carbon monoxide, sulfide, etc. in the hot gas. Harmful gas, thus affecting the drying quality of fruits and vegetables; there are also isolated smoke pipes, but generally straight smoke pipes are used, and the disadvantages are low heat exchange efficiency and large fuel waste; It adopts one-time loading and one-time taking-out method. The disadvantages are ...

AI Technical Summary

Problems solved by technology

The traditional drying device generally uses the hot gas generated by the combustion of fuel (such as firewood, coal, gas, etc.) to directly dry fruits and vegetables. Although the hot gas has undergone a certain settling and purification, there are still a large amount of carbon monoxide, sulfide, etc. in the hot gas. Harmful gas, thus affecting the drying quality of fruits and vegetables; there are also isolated smoke pipes, but generally straight smoke pipes are used, and the disadvantages are low heat exchange efficiency and large fuel waste; It adopts the method of one-time loading and one-time taking out, and its disadvantages are that the loading and taking-out time period is long, the efficiency is low, fuel and manpower are wasted, and the baked products are not uniform, and it is easy to appear over-dry or over-humid.

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