Fuel oil (gas) heat-accumulating type external heat rotating cylinder drying machine

Abstract

The invention relates to heat accumulating gasoline (gas)burning rotating drum drying-machine, which comprises cradle, driving device, heat source, temperature sensor, furnace, thermal insulation material, rotating drum, feed inlet, feed outlet, and apparatus controlling system; the rotating drum is installed across furnace, the part out of furnace of rotating drum is equipped with rolling ring, rolling ring is installed on four riding wheels on the cradle, the friction of one or a pair of riding wheels drives rotating drum. The invention is characterized in that said heat source comprises one or a plurality of gasoline (gas)burning devices and heat accumulating devices, heat source is fixed below rotating drum, heat accumulating device is on the upper of burning flame and below rotating drum, the generated heat gas flow passes through heat accumulating device and then heats rotating drum. The invention provides drying device for Chinese traditional medicine and agricultural products, which is characterized by low drying temperature, strong production ability and easy clean and economical price.

Description

technical field [0001] The invention relates to a heat storage type external heat rotary drum dryer which uses fuel oil and gas as a heat source and is used for drying Chinese medicinal materials, Chinese medicinal herb pieces and agricultural products. Background technique [0002] Most of the drying of Chinese herbal medicines, herbal pieces and agricultural products is carried out when they are harvested at the place of origin, or they are dried again in the medicinal material processing plant due to cleaning, infiltration, etc. The drying temperature is generally 60-80°C or lower. Due to the lack of steam heat source and high electricity cost in the production area or medicinal material processing factory, the production area mainly uses natural conditions for drying, such as sun exposure, air drying, etc. The advantages are that the cost of equipment and energy is very low, and the drying temperature is low and it is easy to preserve the product. Quality, the existing p...

AI Technical Summary

Problems solved by technology

Due to the lack of steam heat source and high electricity cost in the production area or medicinal material processing factory, the production area mainly uses natural conditions for drying, such as sun exposure, air drying, etc. The advantages are that the cost of equipment and energy is very low, and the drying temperature is low and it is easy to preserve the product. Quality, the existing problems are poor sanitary conditions, low drying efficiency, and rainy days can easily lead to product deterioration

[0003] The advantage of drying in the drying room is that it is not affected by the climate, the cost of the drying room is relatively low, and the production capacity is large. The existing problems are high energy consumption, relatively poor sanitary conditions, low production efficiency, uneven temperature field, and difficult to control the drying temperature. Mastery, the quality of dry products is not easy to guarantee

The temperature of the coal-fired flap dryer is not easy to control, and it pollutes the environment. Drying with a steam heat source requires an industrial boiler, especially the dried material is easy to leak into the machine, and it is not easy to clean. Different batches of medicinal materials or Chinese Herbal Pieces Can Cause Cross Contamination

The common technical problem of the above drying equipment is: the hot air as heat conduction directly acts on the material, and the moisture evaporated from the inside of the material makes the hot air become hot and humid air. The higher the humidity of the hot air, the slower the evaporation rate of the water inside the material, and the drying efficiency The lower the temperature is, the higher the energy consumption will be if the hot and humid air is discharged, the humidity of the hot air will become an irreconcilable contradiction with the evaporation of material moisture, drying efficiency and energy consumption

This equipment fails to solve the problem that the high-intensity heat energy produced by the fuel (gas) heat source directly acts on the drum when it is burned, making the temperature of the material to be dried too high, so it is not suitable for Chinese medicinal materials and Chinese herbal medicine pieces that need to be dried at low or constant temperature. drying

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