能够正确的选择一套合适的负压气力输送设备对我们日后的加工生产、物料的输送、效率都是至关重要的，那么在选择负压气力输送设备时我们应该注意哪些方面呢?

　　Choosing a suitable set of negative pressure pneumatic conveying equipment correctly is crucial for our future processing and production, material transportation, and efficiency. So, what aspects should we pay attention to when choosing negative pressure pneumatic conveying equipment?

　　首先重要的就是(负压气力输送)设备的选型，一般选型都是由厂家为客户选择，但是前提是要给负压气力输送厂家提供相应正确的参数。那么那些参数会直接影响型号的选择呢？

　　The first important thing is the selection of (negative pressure pneumatic conveying) equipment. Generally, the selection is chosen by the manufacturer for the customer, but the prerequisite is to provide the negative pressure pneumatic conveying manufacturer with the corresponding correct parameters. So what parameters will directly affect the selection of models?

　　首先我们要知道什么物料，粉状的还是颗粒状的，物料的比重是多少（比重：物料在松散状态下自然堆积的密度，即：一立方物料的重量），一小时的输送量，输送距离和高度等等，这些都直接影响负压气力输送设备的选型；

　　Firstly, we need to know what material it is, whether it is in powder or granular form, what is the specific gravity of the material (density: the density of the material naturally accumulated in a loose state, i.e. the weight of one cubic meter of material), the hourly conveying capacity, conveying distance and height, etc., all of which directly affect the selection of negative pressure pneumatic conveying equipment;

　　其次就是物料的特性，物料有没有挥发、腐蚀性，是不是属于易燃易爆的，这些会直接影响负压气力输送设备的材质及密封程度；

　　Secondly, it is the characteristics of the material, whether it has volatilization and corrosiveness, and whether it is flammable and explosive, which will directly affect the material and sealing degree of negative pressure pneumatic conveying equipment;

　　还有食品行业的我们需要用到304材质或者316材质的，等等这些都需要在购买设备前提前厂家沟通好，厂家才能更好的给您提供更加准确的型号，既保证了输送量，也可以更加安全的使用设备。

　　In the food industry, we also need to use 304 or 316 materials, and so on. These need to be communicated with the manufacturer in advance before purchasing equipment, so that the manufacturer can better provide you with more accurate models, ensuring both conveying capacity and safer use of equipment.

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