主要论述拌和水泥混凝土配料时如何提高气动闸门的配料精度，如何比较准确地控制混凝土的坍落度。
This paper focuses on mixing cement concrete batching at how to improve the preparation of precision pneumatic valves, and how to accurately control the concrete slump constant.
它采用液力偶合器、可拆式刮板链条、气动卸料闸门以及多弹簧缓冲的螺旋张紧装置等新技术、新结构。
New technology and new construction, such as hydraulic coupling, dismountable scraper chain, pneumatic discharge gate valve and screw tensioning device with multi-spring buffer are used.
气动鄂式闸门采用气动推杆，通过配件组合可以远距离操纵或现场控制。
Pneumatic jaw valve adopts pneumatic draw stem and it can control remotely or in local equipped with fittings grouping.
气动鄂式闸门采用气动推杆，通过配件组合可以远距离操纵或现场控制。
Pneumatic jaw valve adopts pneumatic draw stem and it can control remotely or in local equipped with fittings grouping.
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