德国Ｎｅｕｈｏｆ公司开发出一种输送粉尘、颗粒状物粒的新型活塞喷射系统，可以在输送压力不变的情况下调节喷粉量。带流化床浓相输送罐的这种设备配有一套特殊的活塞喷射器，在输送方向上，活塞可以向前移动。有一个用电位差计或定点控制的特殊执行器，把剂量活塞连续而无延 Neuhof, Germany, has developed a new piston injection system that delivers dust and pellets to adjust the amount of dust to be delivered with the same delivery pressure. This equipment with a fluidized bed dense phase transport tank is equipped with a special set of piston injectors which allow the piston to move forward in the conveying direction. There is a special potentiometer or fixed-point control of the actuator, the dose piston without delay