Drying machine for wood chips

Abstract

The invention discloses a drying machine for wood chips. The drying machine comprises a conveyor belt, a dynamic chain, N heating rollers arranged at intervals sequentially and a heat circulating device providing heat carriers to the heating rollers; each heating roller is provided with one roller, a first driving shaft is arranged above the first heating roller, a second driving shaft is arranged above the Nth heating roller, and each of the first driving shaft and the second driving shaft is connected with a driving motor; one end of the dynamic chain is mounted on the first driving shaft while the other end winds the rollers sequentially and the second driving shaft to return to the first driving shaft, and the conveyor belt is mounted between a feed inlet and a discharge outlet and is arranged on outer side walls of the heating rollers through positioning roll shafts sequentially, wherein N is a positive integer greater than or equal to 3. Compared with the prior art, the drying machine has the advantages of simple structure, low energy consumption, rapid drying and high drying efficiency.

Description

technical field [0001] The invention relates to a wood processing machine, in particular to a wood chip ironing machine. Background technique [0002] Wood must be dehydrated and dried before it is processed into products (such as building components, furniture, vehicles, ships, stationery, packaging containers, etc. wood products). In the field of wood processing, the felled trees are generally cut to obtain wood chips, blocks or strips after debranching and shaping. For the drying treatment of wood with different structures and forms, the most traditional drying method is generally to use direct sunlight after stacking. This method is limited by the weather, and it consumes a lot of labor and takes a long time. Larger venues will gradually be eliminated by the market. [0003] With the advancement of science and technology, wood drying equipment has gradually become more and more mature and suitable for industrialization. These wood drying equipment generally use boiler ...

AI Technical Summary

Problems solved by technology

① Although the hot steam used can reach a higher temperature, the hot steam is in a vapor state, not liquid water, and cannot be directly recycled and heated. It must be cooled into water before heating, which wastes a lot of heat energy and consumes high energy; ②If water is used as a heat carrier when it exceeds its boiling point, the equipment and system are required to withstand high pressure, the investment in equipment is large, and safety problems are prone to occur; The temperature of the hot steam in the heat exchange is gradually different, which makes the same batch of dried wood chips heated unevenly, and the steam is easily liquefied into water droplets after cooling, which adheres to the dried wood chips, seriously affecting the quality of wood

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