Oil-furnace-heat-supply type dryer

Abstract

The invention discloses an oil-furnace-heat-supply type dryer. The oil-furnace-heat-supply type dryer comprises a drying bin, an oil-furnace heat supply device and a conveying mesh belt, and the conveying mesh belt horizontally penetrates the drying bin. The oil-furnace heat supply device comprises a plurality of heat exchangers, a hot oil guide pipe and an oil furnace. An air blower is further arranged on the oil furnace, and a moisture pumping pipe is communicated with an air inlet of the air blower. The moisture pumping pipe is additionally arranged at the top of the drying bin and can discharge steam in the drying bin, and drying of fruits is facilitated; particularly, the moisture pumping pipe is connected with the air blower, dehumidifying in the drying bin is facilitated, and waste heat of the steam can be further fully used; after the steam is pumped into the oil furnace, combustion supporting can be facilitated, and the heat value in the oil furnace can be increased; as a smoke filter and a heat exchanging device are additionally arranged in a chimney of the oil furnace, waste heat is fully used, and environmental pollution is prevented; and as a heated oil circulation system is matched with a heat sink, the heat energy can be fully used, and the aims that production cost is reduced and the drying efficiency is improved are achieved.

Description

technical field [0001] The invention relates to a drying device, in particular to a drying machine for heating and drying fruits. Background technique [0002] The traditional drying machine adopts the drying method of direct heating or water vapor heat transfer, and applies the principle of convection heat transfer, and transfers the heat to the heating group (radiator) of the drying box with the help of the hot oil generated by the oil furnace. Give the dry air in the drying box, the dry air transfers heat to the fruit, so that the water in the fruit is heated and evaporated, so as to achieve the purpose of drying the fruit. This equipment not only has lower work efficiency, but also has higher production cost. The maximum pressure of the traditional dryer steam oven is greater than or equal to 1.5Mpa, the safety performance is poor, and its noise is greater than 70 decibels, the surface temperature of the oven is greater than 35°C, there is water pollution, a large amoun...

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Problems solved by technology

[0004] The above-mentioned technical solution has the following defects: the steam is discharged into the atmosphere, neither the waste heat nor the steam is fully utilized, so it does not meet the requirements of energy saving and environmental protection

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