Negative pressure type bamboo drying machine

Abstract

The invention discloses a negative pressure type bamboo drying machine. The negative pressure type bamboo drying machine comprises a drying main body, a heater and an exhaust fan; the drying main body comprises a preheating chamber and a drying chamber; the top ends of the preheating chamber and the drying chamber are communicated with each other through a gas conveying pipe; an air inlet is formed in the bottom end of the drying chamber; the heater is arranged in the drying chamber and above the air inlet, and air is heated through the heater; an air outlet is formed in the lower end of the preheating chamber, and the exhaust end of the exhaust fan communicates with the air outlet; containing frames used for longitudinally hooping bamboo to be dried are placed in the preheating chamber and the drying chamber; tarpaulin used for laterally wrapping the bamboo is arranged on the preheating chamber and the drying chamber on the outer side edges of the containing frames; and one side of the tarpaulin is provided with an opening and closing port used for mounting or dismounting the containing frames, the tarpaulin is adsorbed outside the containing frames through the exhaust fan, and hot air sequentially flows through the bamboo in the drying chamber and the preheating chamber. The energy loss can be effectively reduced, the heat utilization rate is high, and drying is uniform.

Description

technical field [0001] The invention relates to the technical field of bamboo processing equipment, in particular to a negative-pressure bamboo drying machine. Background technique [0002] At present, my country's bamboo industry maintains a rapid growth rate, and the overall development of the industry is in good shape. Enterprise innovation, new technology, and new product development have sprung up like mushrooms, and the enthusiasm for developing bamboo resources in various places is very high. Bamboo industry has become a pillar industry of local economic and social development and the main source of economic income for farmers in mountainous areas. [0003] In the process of bamboo processing and utilization, bamboo is often woven into bamboo curtains. When the moisture content of the bamboo curtain itself is high or after dipping, the bamboo curtain needs to be dried. Existing negative pressure bamboo drying machines usually have a large gap between the bamboo to be...

AI Technical Summary

Problems solved by technology

Existing negative pressure bamboo drying machines usually have a large gap between the bamboo to be dried and the inner wall of the drying box. When performing negative pressure drying, most of the dry hot air does not pass through the closely arranged bamboo curtains, but Through the gap between the bamboo curtain and the inner wall of the drying box, the outer layer of bamboo is dried too quickly, while the inner layer of bamboo is not fully dried; and in order to make the bamboo dry more evenly, it is necessary to use a partition device to evenly separate the bamboo, not only It increases the workload, reduces the drying capacity of bamboo in the dryer, and increases the production cost

Therefore, although the existing negative pressure bamboo drying machines are of various types, there are still problems such as serious energy loss, low heat utilization rate, and uneven distribution of hot air in the drying box.

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