Pure pine beaverboard preparation

Abstract

The manufacture method of pure pine fiber board comprises the following steps: (A) pre-steaming; (B) steaming; (C) hot-grinding; (D) drying; (E) applying adhesive, paraffin wax and white paste; (F) winnowing; (G) cold-pressing; and (H) hot-pressing and cutting to obtain final product. A wind feeding device comprises a cyclone separator (1), a feed pipe (2), a winnower (3), an exhauster (4), a cyclone separator (5) and wind pipes, a dust collector (6) and a valve (7), wherein the duct collector (6) is arranged on the wind pipe between the cyclone separator (5) and the winnower (3); the valve (7) is arranged on the wind pipe between the dust collector (6) and a winnower (3); and a cold wind inlet (8) is formed on the wind pipe between the valve (7) and the winnower (3). The pure pine fiber board manufactured by the method has the advantages of greatly improved strength and waterproof performance, pleasant smell of rosin and improved appearance quality. The wind feeding device is reconstructed to remarkably improve the product quality.

Description

technical field [0001] The invention relates to the field of wood fiberboard production methods. Background technique [0002] At present, in the production process of wood fiberboard, pine wood is used as an auxiliary raw material and mixed with miscellaneous wood in an amount of 30% according to the conventional practice. The board produced is miscellaneous wood fiberboard. The pine wood is peeled into pieces by a peeling machine, and then put into a cooking pot for steaming after being sorted and sorted by swinging; 2. Thermal grinding: put the steamed pine chips into a thermal grinder and grind them into wood fibers; drying: Dry the wood fiber through the drying pipe; 4. Sizing glue and wax, spray the glue and paraffin to the wood fiber in the drying pipe respectively with a sprayer; 5 air selection: air select the dried wood fiber through the air separation device; 6. Cold pressing; hot pressing. Its shortcoming is that the color of miscellaneous wood fiberboard is da...

AI Technical Summary

Problems solved by technology

Its shortcoming is that the color of miscellaneous wood fiberboard is dark, and the appearance quality is poor; Machine 5 and air duct. In the process of fiberboard processing and production, the wood chips are firstly ground into fibers by a heat mill, sent to the drying pipe by steam pressure for drying, and then separated by a cyclone separator, and then conveyed by a screw conveying rod. The material pipe 2 is transported to the winnowing machine 3 for winnowing, and the qualified fibers after winnowing are pumped by the exhaust fan 4 to the cyclone separator 5 for secondary separation, and the qualified dry fibers enter the finished product room, and the hot air passes through the air duct Go back to winnowing machine 3 and start recycling

The disadvantage is that the temperature inside the air duct is 25 °C higher than the outside temperature in summer and 65 °C higher in winter because the temperature of the fiber after drying is as high as 60-65 °C. Water droplets, water droplets are brought into the product by hot fibers, causing water spots on the product and seriously affecting product quality

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