Harmless treatment device for public hazard sanding dust of plywood and treatment method

Abstract

The invention discloses a harmless treatment device or public hazard sanding dust of plywood and a treatment method. The harmless treatment device mainly comprises a distinguishing sanding system and a sanding dust distinguishing recovery system; the distinguishing sanding system is mainly composed of an opposite type double-face sanding machine and an offset type double-face sanding machine; the sanding dust distinguishing recovery system is mainly composed of a wood dust remover, a putty dust remover, a grinding machine, a packaging machine, a negative pressure fan and a motor; the negative pressure fan respectively communicates with the wood dust remover and the putty dust remover; and the wood dust remover and the putty dust remover respectively communicate with the offset type double-face sanding machine and the opposed type double-face sanding machine, and a feed opening of the putty dust remover sequentially communicates with the grinding machine and the packaging machine. Distinguishing recycling of plywood sanding dust can be realized, efficient, high-value and harmless treatment and cyclic reutilization are particularly performed on sanding putty dust with public hazards, and the harmless treatment device has important significance on emission reduction, efficiency improvement and environmental protection strategy of plywood enterprises.

Description

technical field [0001] The invention belongs to the technical field of dust treatment in plywood production, and in particular relates to a harmless treatment device and method for the pollution-free sanding dust of plywood. Background technique [0002] In the plywood production process, in order to improve the product quality of thicker plywood for furniture, the plywood is usually produced by the secondary molding method, that is, the core of the board is hot-pressed first, and then the surface layer is added for secondary hot-pressing to achieve the product. the required thickness. In order to ensure the quality of secondary molding during production, it is necessary to putty the surface of the board core to fill the board surface defects such as insect holes, pits, and gaps on the surface of the board core. At present, the method of scraping putty powder mostly uses an automatic putty scraper dryer to scrape and dry the putty powder. This method of scraping putty powde...

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Problems solved by technology

[0003] However, because this kind of mixed sanding dust contains more than 15% of putty dust, which is a non-combustible powder, after entering the hot oil furnace, part of the putty dust will be discharged into the atmosphere through the chimney with the airflow, which will affect the surrounding farmland, forests and villages. Dust pollution is caused, another part of the putty dust is sintered at high temperature into lumps and piled up in the furnace, causing the furnace to be blocked and difficult to clean, an

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