旋转供料器是气力输送系统里的常用设备，在中低压压送系统中可当作供料器使用；在除尘系统末端能作为卸料器，且在排卸过程中能阻挡外界空气进入系统，起到减少漏气的作用。

　　Rotary feeder is a commonly used equipment in pneumatic conveying systems and can be used as a feeder in medium and low pressure conveying systems; At the end of the dust removal system, it can serve as an unloader and block external air from entering the system during the discharge process, reducing air leakage.

　　旋转供料器在气力输送系统中使用较为频繁，出现问题是很正常的，结合长期的实践经验，整理出了旋转供料器的常见故障及解决办法。在讲故障及解决办法之前，先说说旋转供料器使用时的注意要点：

　　Rotating feeders are frequently used in pneumatic conveying systems, and it is normal for problems to occur. Based on long-term practical experience, common faults and solutions of rotating feeders have been summarized. Before discussing the faults and solutions, let's first talk about the key points to note when using the rotary feeder:

　　1. 安装旋转供料器机组时，要预留出便于维修的空间；

　　When installing the rotary feeder unit, space should be reserved for easy maintenance;

　　2. 供料器机组属于精密设备，不要把上部压力以及连接管道的应力等附加力传递给主机；

　　2. The feeder unit is a precision equipment, so do not transmit additional forces such as upper pressure and stress from connecting pipelines to the host;

　　3. 要考虑热膨胀对该旋转供料器机组的影响，尽量将其降到最低，建议使用弹性节；

　　3. Consider the impact of thermal expansion on the rotating feeder unit and minimize it as much as possible. It is recommended to use elastic joints;

　　4. 清洗及气封装置应配备必要的减压装置和气量调节装置，保证气体的品质符合要求。

　　4. The cleaning and sealing devices should be equipped with necessary pressure reducing devices and gas volume regulating devices to ensure that the quality of the gas meets the requirements.

　　这些方面有助于延长旋转供料器的使用寿命，也方便进行维护，下面来说说气力输送设备中旋转供料器的常见故障及解决办法：

　　These aspects help to extend the service life of the rotary feeder and facilitate maintenance. Below are common faults and solutions of the rotary feeder in pneumatic conveying equipment:

　　1. 杂音：产生这种现象的原因主要有三个方面，一是转子与侧板之间滞留了所输送的粉粒物料；二是机壳与转子间隙过小，导致两者接触；三是机壳内表面附着有粉料，或者粉料融化，使得转子与机壳之间的间隙消失。解决杂音现象的方法，一是从侧面丝堵部位进行气体冲洗；二是扩大间隙，使其达到合适的大小；三是缩小转子端面面积。

　　1. Noise: There are three main reasons for this phenomenon. Firstly, the powder particles being transported are trapped between the rotor and the side plate; Secondly, the clearance between the casing and the rotor is too small, resulting in contact between the two; The third reason is that there is powder attached to the inner surface of the casing, or the powder melts, causing the gap between the rotor and the casing to disappear. The method to solve the noise phenomenon is to perform gas flushing from the side plug area; The second is to expand the gap to a suitable size; The third is to reduce the surface area of the rotor end face.

　　2. 振动：出现这种现象主要是因为链条过紧，适当将链条调松即可。

　　2. Vibration: The main reason for this phenomenon is that the chain is too tight. Loosen the chain appropriately.

　　3. 供料量不足：一是由于泄漏气体的作用，阻碍了粉粒物料下落；二是粉粒体物料的容重和设计值不一样。对于第一种故障，采用抽气措施就能解决；第二种则需要提高转速，使其达到合适的转速。

　　3. Insufficient supply: Firstly, due to the effect of gas leakage, it hinders the falling of powdered materials; The second reason is that the bulk density and design value of powdered materials are different. For the first type of fault, using exhaust measures can solve it; The second method requires increasing the rotational speed to reach an appropriate level.

　　4. 卡料：此故障主要是由于配管不当，导致机壳变形，或者温度升高超过了间隙设计的温度；解决方法是在供料器的正上方或正下方使用软管；扩大间隙，使其达到合适的大小。

　　4. Material jamming: This fault is mainly caused by improper piping, resulting in deformation of the casing, or temperature rise exceeding the designed gap temperature; The solution is to use a hose directly above or below the feeder; Expand the gap to achieve the appropriate size.

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