1、供料能力：即每小时供料量t/h，换算到旋转供料器m3/h

1. Feeding capacity: i.e. feeding capacity per hour T / h, converted to rotating feeder m3 / h

2、压差：保证旋转阀供料性能时，上下法兰之间的工作压力差kPA

2. Differential pressure: when ensuring the feeding performance of rotary valve, the working pressure difference between upper and lower flanges is kPa

3、温度：旋转供料器介质物料的温度，温度不同决定旋转阀的间隙设定不同；高于环境较大时考虑保温伴热等措施，另外轴承、密封等达到其使用的极限温度时需考虑解决办法。

3. Temperature: the temperature of the medium material in the rotary feeder. The clearance setting of the rotary valve is different depending on the temperature; When it is higher than the environment, measures such as thermal insulation and heat tracing shall be considered. In addition, solutions shall be considered when the bearing and seal reach the limit temperature of their use.

4、漏气量：供料器在有压差的情况下，通过转子和壳体的间隙的泄漏气体的量，m3/h

4. Air leakage: the amount of gas leakage of the feeder through the gap between the rotor and the shell under the condition of differential pressure, m3 / h

5、转速：转子每分钟的转动的圈数，单位RPM

5. Speed: the number of revolutions of the rotor per minute, in rpm

6、填充系数：填充系数可以定义为没有压差时的容积效率。与旋转供料器的几何尺寸、形状以及物料特性有关。

6. Filling factor: the filling factor can be defined as the volumetric efficiency without differential pressure. It is related to the geometric size, shape and material characteristics of the rotary feeder.

7、耐磨性：物料本身的特性，对旋转阀气力输送工程壳体和转子的磨损程度，磨损性大的物料宜选用耐磨旋转供料器。

7. Wear resistance: according to the characteristics of the material itself, the wear degree of the shell and rotor of the rotary valve pneumatic conveying project, and the wear-resistant rotary feeder should be selected for the materials with high wear resistance.

气力输送系统卸料器、罗茨风机选型方案是整套设备顺利运行的核心，在此卸料器生产厂家总结了以下几条设计思路仅供参考。

The selection scheme of unloader and roots blower of pneumatic conveying system is the core of the smooth operation of the whole set of equipment. Here, the unloader manufacturer summarizes the following design ideas for reference only.

1、物料性质：考虑物料的大小、磨损性、重量、每小时处理量

1. Material properties: consider the size, abrasiveness, weight and hourly processing capacity of materials

2、输送场地：考虑物料输送距离、管道的弯度

2. Transportation site: consider the material transportation distance and the curvature of the pipeline

3、输送形式：考虑投料点、目的地的个数

3. Conveying mode: consider the number of feeding points and destinations

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