Secondary drying device of sawdust

Abstract

The invention provides a secondary drying device of sawdust. The secondary drying device comprises a drying box, a hot air inflow pipe, a hot air outflow pipe and a hot air generator. A horizontally-arranged partition is arranged in the drying box, the interior of the drying box is divided into a primary drying chamber and a secondary drying chamber which are vertically arranged by the partition,a quantitative discharge port communicating with the primary drying chamber and the secondary drying chamber is formed in the partition, and a quantitative discharge part capable of blocking the quantitative discharge port is arranged in the primary drying chamber. Multiple preheating pipes are arranged in the primary drying chamber at intervals in the vertical direction. A drying barrel is arranged in the secondary drying chamber, the central axis of the drying barrel is horizontally arranged, a feed pipe communicating with the quantitative discharge port is arranged at the top end of the drying barrel, and a discharge pipe stretching out of the drying box is arranged at the bottom end of the drying barrel. One end of the hot air inflow pipe penetrates through an outer shell and an innershell and stretches into the drying barrel, the other end of the hot air inflow pipe is connected with the hot air generator, one end of the hot air outflow pipe stretches into the drying barrel, andthe other end of the hot air outflow pipe stretches into a second air chamber. The drying speed is high, the one-time drying amount is large, and the large-scale production requirements can be met.

Description

technical field [0001] The invention relates to the technical field of sawdust drying, in particular to a sawdust secondary drying device. Background technique [0002] When using wood chips to make various products, it is necessary to dry the wood chips first to reduce the moisture content to the required range before proceeding to the next step of processing and utilization. Now many people use natural drying to dry the wood chips using sunlight. Drying, evaporating the water in it to make it meet the requirements, the cost of natural drying is low, and the operation is relatively simple, but natural drying takes a long time, requires a relatively large site, is greatly affected by natural conditions, and has poor stability. The amount of dried sawdust is not large, which cannot meet the needs of large-scale production and processing. Contents of the invention [0003] Based on the technical problems existing in the background technology, the present invention proposes ...

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Problems solved by technology

[0002] When using wood chips to make various products, it is necessary to dry the wood chips first to reduce the moisture content to the required range before proceeding to the next step of processing and utilization. Now many people use natural drying to dry the wood chips using sunlight. Drying, evaporating the water in it to make it meet t

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