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原文
Rotary valve material An advanced technology In a variety of materials in pneumatic conveying systems, rotary valve used to quantitatively transfer the material from the hopper feeding devices or materials. Nature of the materials by transport, use pellets or powder rotary valve rotary valve. Smooth operation of such valves, transmission efficiency, frequency control can be achieved. Two structural features and the technical difficulties Structural features: 1 between the rotor and the body left the best space, neither material stuck, but also to ensure minimum air leakage. 2 body surface and the inner surface of the rotor hopper smooth, minimizes material retention. 3 rotary valves on both sides of the rotor shaft has a blow port, to ensure the normal operation of the bearing. Monitoring device equipped with a rotor 4, is easy to realize automatic control. Technical difficulties: 1 According to the pellets or powder conveying rotary valve features and specifications, with practical experience and reasonably determine the gap between the rotor and the valve body. 2 body surface and the inner surface of the rotor hopper polishing, polishing, especially at the corners very difficult. Three product scope Rotary valve for a variety of granular material or powder pneumatic conveying system
原文来自：http://www.anquanfa.org

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译文：
一技术先进性在各种物料的气力输送系统中，物料旋转阀用来定量输送来自料仓或给料装置的物料。按输送物料的性质，选用粒料旋转阀或粉料旋转阀。此类阀门的运转平稳，输送效率高，可实现变频控制。二结构特点和技术难点结构特点： 1 转子与阀体间留有最佳的间隙，既不被物料卡死，又可保证最小的漏气量。 2 阀体的内表面和转子料斗的表面光滑，可最大限度地减少物料的滞留。 3 旋转阀两侧的转子轴端设有吹除口，确保轴承的正常运转。 4 配有转子监控装置，便于实现自动化控制。技术难点： 1 根据输送的粒料或粉料特性和旋转阀的规格，凭借实践积累的经验，合理地确定转子与阀体间的间隙。 2 阀体的内表面和转子料斗表面的抛光，特别是死角处的抛光很困难。三产品适用范围物料旋转阀用于各种粒料或粉料的气力输送系统

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