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Common problems in the process of wood drying equipment

Number of hits:    Update time: 21 / 04 / 12 09:51:04       Source: 13428888166.cn 大香蕉伊在线视频: close branch      Enjoy:
As the basic operation equipment of wood processing market, wood drying equipment can realize large-scale wood processing and ensure the basic operation requirements. However, in the process of using drying equipment, it is easy to collapse, internal cracking and deformation. The following Shandong Jinlun machinery will analyze the dryer veneer equipment in the wood processing process of common problems.
Common problems of wood drying equipment in processing
(1) the so-called collapse mainly refers to the abnormal deformation of wood caused by cell deformation, which is caused by the tensile and compressive stress caused by the change of water content in the cell cavity. Generally, the wood with high moisture content is easy to collapse when the temperature is too high at the initial stage of drying. According to the different tree species, the surface of the plate will be uneven in the part where the collapse is concentrated. In order to avoid this defect, trees with large collapse can be air dried for a period of time or low temperature drying.

(2) if the thickness of the inner crack is less than 1 cm, the wood drying equipment is used to dry the thin plate. The internal crack is formed after the surface crack develops inward and the surface crack closes. There are also cases where there are no cracks on the surface and only cracks in the interior.

 Wood drying equipment

(3) the deformation of wood drying equipment mainly includes transverse bending, longitudinal bending, torsion and warping. The main reason is caused by different contraction of different parts, contraction difference between different tissues and local collapse.
(4) after drying, the wood will change color in different degrees, some of which are serious. There are two kinds of discoloration, one is due to the reproduction of chromophore and rot fungus; One is discoloration caused by acidification of wood components in hot and humid conditions. High temperature drying of wood with high moisture content often makes the color of wood deepen or darken; Sometimes, the wood surface will turn black due to excessive humidity in the process of steam spraying or the drying chamber is not clean for a long time.
Wood dryer is designed and manufactured for drying sawdust, sawdust and veneer. It is characterized by large drying output, remarkable energy saving effect and low maintenance cost. It is mainly composed of air heater, feeder, airflow drying pipe, cyclone separator, fan, etc.

The wood dryer has the advantages of high processing capacity, low fuel consumption and low drying cost. Wood drying equipment has the characteristics of high temperature resistance, which can use high temperature hot air to quickly dry materials. It has strong expansibility and the production allowance is considered in the design. Even if the output increases slightly, the equipment does not need to be replaced. The structure of self-aligning tugboat is adopted in the equipment. The tugboat and the rolling ring match well, which greatly reduces wear and power consumption. The specially designed block wheel structure greatly reduces the horizontal thrust caused by the inclined operation of the equipment. It has strong overload resistance, stable operation and high reliability.

 Wood drying equipment

The wood drying machine uses self-made combustible gas as heat source, namely roller part and serpentine part. The drum has two layers of inner drum and outer insulation. The inner drum has three inner spiral fins, which can make the dry material move evenly. It's called frying and heating. The serpentine part uses heat source again. The wood drying equipment uses the negative pressure exhaust of induced draft fan to pump the dried materials into the screw for separation, so as to achieve the drying effect.
Editor: Lynn
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