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A wood chip dryer

A drying machine and sawdust technology, applied in the direction of dryer, drying, wood particle drying, etc., can solve the problems of low heat exchange efficiency, short drying time, small amount of sawdust, etc., and achieve uniform quality of sawdust and drying Uniform drying temperature and controllable drying temperature

Active Publication Date: 2022-08-09
庄德恩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When using wood chips to make biomass fuel particles, it is necessary to dry the wood chips first to reduce the moisture content to the required range, evaporate the water in it, and make it meet the requirements. The cost of natural drying is low, and it is relatively easy to operate. Simple, but natural drying takes a long time, requires a relatively large site, is greatly affected by natural conditions, has poor stability, and the amount of sawdust dried each time is not large, which cannot meet the needs of large-scale production and processing
[0003] Therefore, people use dryers to dry wood chips. Compared with natural drying, it occupies a smaller area and has a shorter drying time. The existing drying of wood chips is carried out in a drum, and the wood chips are dried by a feeding mechanism. Put it into the drum, use the rotating device to rotate the drum, and then dry the wood chips in the drum through the hot air of the hot air conveying mechanism. However, the existing dryers also have shortcomings: first, the heat of drying is not uniform. , it takes a long time to dry. Secondly, when drying, the heat exchange efficiency between the sawdust and the hot air is low, the moisture content of the dried sawdust is low, and the quality of the sawdust is uneven. When the dust concentration is high, this type of dryer is easily ignited and exploded

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1: Reference figure 1 , a wood chip dryer, comprising a drum 1 with thermal insulation, a left end cover 2 sleeved on the left end of the drum, a right end cover 3 sleeved on the right end of the drum, and a rotating mechanism 7 that drives the drum to rotate, and also includes a circulating supply A heating device 4, the circulating heating device 4 includes a heat conduction pipe 4-1 arranged inside the drum 1 and a heat supply device 4-2 connected to both ends of the heat conduction pipe 4-1. The heat supply device 4-2 is connected to the heat conduction pipe A circulating loop is formed between 4-1, the circulating loop is filled with a heat-conducting medium, and a circulating electric pump 5 is arranged on the circulating loop, and the circulating electric pump 5 drives the heat-conducting medium to circulate and flow in the circulating loop.

[0036] refer to figure 2, the heat transfer pipe 4-1 sequentially includes a heat transfer medium feeding secti...

Embodiment 2

[0047] Example 2: Reference image 3 , this embodiment is basically the same as the embodiment, the only difference is that the spiral coil tube and the drum 1 are vertically arranged.

[0048] During the work, the screened materials are unloaded from the feeding channel 2-2 to the storage cavity 2-2-1, and the feeding mechanism 10 in the storage cavity 2-2-1 dials the materials into the left end cover 2. In the blanking chamber 2-1, at the same time, the air supply device 9 blows the filtered hot air from the chimney of the boiler of the heating device 4-2 into the blanking chamber 2-1 from the air inlet channel 2-3. During the process, the material distributing part 11 screens and separates it, the larger diameter and heavier materials fall on the separator mesh 12 under the material distributing part 11, and the smaller diameter and lighter materials are under the action of hot air. For pre-drying and screening, since the drum 1 rotates under the action of the rotating mec...

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Abstract

The invention relates to the technical field of sawdust drying, in particular to a novel sawdust dryer. A new type of sawdust dryer comprises a drum with thermal insulation, a left end cover sleeved on the left end of the drum, a right end cover sleeved on the right end of the drum, a rotating mechanism for driving the drum to rotate, and a circulating heating device, The circulating heat supply device includes a heat conduction pipe arranged inside the drum and a heat supply device connected with both ends of the heat conduction pipe. A circulation loop is formed between the heat supply device and the heat conduction pipe, and the circulation loop is filled with a heat conduction medium. A circulating electric pump is provided, and the circulating electric pump drives the heat transfer medium to circulate and flow in the circulating circuit. The dryer of the invention has the advantages of uniform drying temperature, controllable drying temperature, uniform wood chip quality, fast drying speed, little powder after drying, high heat utilization rate, energy saving and environmental protection, and safety and controllability.

Description

technical field [0001] The invention relates to the technical field of sawdust drying, in particular to a sawdust dryer. Background technique [0002] When using wood chips to make biomass fuel particles, it is necessary to dry the wood chips first to reduce the moisture content to the required range, and evaporate the water in them to meet the requirements. The natural drying cost is low and it is relatively easy to operate. Simple, but natural drying takes a long time, requires a large site, is greatly affected by natural conditions, and has poor stability, and the amount of wood chips dried each time is not large, which cannot meet the needs of large-scale production and processing. [0003] Therefore, people use the dryer to dry the wood chips. Compared with natural drying, it occupies a smaller area and has a shorter drying time. The existing wood chips are dried in the drum, and the wood chips are dried by the feeding mechanism. Put it into the drum, use the rotating ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F26B11/06F26B21/00F26B23/10F26B25/00
CPCF26B11/0418F26B11/0431F26B21/001F26B23/10F26B25/002F26B2200/24Y02P70/10
Inventor 庄德恩
Owner 庄德恩