Powder pipeline flexible connectors are divided into canvas flexible connectors, polyurethane flexible connectors, polytetrafluoroethylene (PTFE) flexible connectors, and silicone flexible connectors according to their materials.
Flexible pipe connectors are widely used in powder conveying systems, but their value is not high compared to machine equipment or systems. However, it plays a very important role in the safe and stable operation of the system, which can cause dust leakage pollution, product loss, equipment shutdown, and even static electricity hazards leading to damage. So, how should pipeline flexible connectors be selected?
The selection of pipeline flexible connectors includes the selection of materials and installation forms.
The selection of materials for pipeline flexible connectors is mainly related to the operating conditions applied, including:
One is the characteristics of the conveyed material: temperature, wear resistance, corrosiveness, and flammability. For example, silicone tape flexible connectors have a high temperature resistance of over 200 degrees, but their wear resistance is far inferior to polyurethane flexible connectors. When the material is flammable, conductive materials are preferred; When the material is corrosive, polytetrafluoroethylene (PTFE) flexible connectors can be considered.
The second is the conditions for the application location: pressure size, whether it is negative pressure, and whether it is used in vibrating or swinging equipment. When there is internal pressure, priority should be given to sealing more tightly with pipe connectors to prevent powder leakage. When there is internal negative pressure, it is necessary to consider adding support rings to the connector. When applied to the swing screen, due to the large swing amplitude, polyurethane flexible connectors with better fatigue resistance are preferred. At the same time, the length of the pipeline connector should also be moderate. If it is too long or too short, it will affect its service life.

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