An apparatus for preparing urea-formaldehyde resin adhesive for artificial board

By employing a conical cylinder, a spiral guiding structure, and a stirrer assembly in the reactor, the problem of uneven urea particle dispensing was solved, achieving omnidirectional three-dimensional dispensing and uniform dispersion of urea particles, thereby improving the preparation quality and production efficiency of the adhesive.

CN122399672APending Publication Date: 2026-07-17HEZE WANMEI WOOD IND CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HEZE WANMEI WOOD IND CO LTD
Filing Date
2026-06-04
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In the existing technology, during the preparation of urea-formaldehyde resin adhesive for engineered wood products, uneven addition of urea particles leads to excessively high local concentrations in the reactor, resulting in incomplete polymerization and affecting the bonding strength of the adhesive and the overall quality of the finished boards.

Method used

A device for preparing urea-formaldehyde resin adhesive for engineered wood panels is used. By installing a driver and a rotating shaft on the top of the reactor, combined with a conical cylinder, a spiral guide structure and a stirrer assembly, the device achieves all-round three-dimensional delivery and uniform dispersion of urea particles. The design of the spiral guide structure and the discharge pipe ensures that the urea particles are in full contact with the liquid raw materials, avoiding particle accumulation and blockage.

Benefits of technology

It significantly improves the dispersion and uniformity of urea granules, shortens the mixing time, improves the sufficiency of the polymerization reaction and the quality of the adhesive preparation, enhances production efficiency, and avoids granule accumulation and clogging problems.

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Abstract

本发明涉及粘剂制备技术领域,尤其涉及一种人造板脲醛树脂胶粘剂制备装置,包括安装在反应釜顶部的驱动器,所述驱动器的输出端安装有位于反应釜内部的旋转轴,旋转轴的内部形成空腔,旋转轴表面套设有若干上下布置的搅拌器组,所述旋转轴的表面固定套设有直径自上而下逐渐递减的锥形筒,反应釜顶部连接有用于尿素颗粒投放的导入管,且导入管下端管口位于锥形筒上端开口的覆盖范围内,旋转轴表面开设有两组连通自身空腔的槽口,槽口底部与锥形筒底壁等高。本发明可实现尿素颗粒在反应釜内部不同高度层次、不同周向轴向点位的全方位立体投放,有效解决传统投料方式颗粒集中堆积、局部浓度过高的问题,极大提升尿素颗粒的投放分散性与均匀性。
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