Characteristics of positive pressure pneumatic conveying and negative pressure pneumatic conveying
Advantages of positive pressure pneumatic conveying:
（1）can be performedOver 200 meterslong-distance transportation
（2）There are various types of equipment for gas or power supply, such as fans and storage pumpsThe system has great adaptability，During transportation, even if there are some changes in the transportation conditions, normal transportation can still be maintained.
（3）It can also transport large particles and high-density materials under appropriate conditions. That is to say, it has a wide adaptability to materials.
（4）During transportation, there can be multiple unloading points. Therefore, one conveying pipe can enter multiple receiving warehouses.
（5）The structure of the material separator is simple, and the material gas can be separated by simply expanding the capacity.
（6）Due to the low consumption of compressed air during transportationTherefore, dust collectors have simple structures, occupy small spaces, and do not need to withstand positive and negative pressures.
Advantages of negative pressure pneumatic conveying：
（1）can beConcentrate from multiple points and deliver to one point.
（2）Due to the simple structure of the sender, there is no need for a large space for the sender.
（3）During transportationDue to the negative pressure inside the pipeline, even if there are pores on the device, the material will not diffuse outward and will not pollute the environment.
（4）Even in the event of a malfunction, dust is not easily generated at the sending end.
（5）At the sending end, gas generally does not enter the upper silo. Therefore, the loading or feeding port can often be in an open state.
