Analysis Of The Advantages And Disadvantages Of Fluorine-lined Pumps And Fluorine-lined Centrifugal Chemical Pumps

CIP Return Pump is a new generation of corrosion-resistant centrifugal pump based on IH pump. It combines the advantages of various chemical pumps and is suitable for long-term delivery of various acids, oxidants and other corrosive media of any concentration under the temperature of -20℃～120℃. The impeller and pump cover are made of metal inserts wrapped with fluoroplastics, and the pump body is made of metal shell lined with fluoroplastics (F46), which is enough to bear the weight of the pipeline and withstand mechanical impact. The shaft seal adopts advanced external bellows mechanical seal, the static ring is made of 99.9% alumina ceramics, and the dynamic ring is made of PTFE filling material. It is characterized by good corrosion resistance and wear resistance.

Adopting the back-pull structure, one person can easily carry out daily internal maintenance and parts replacement without disassembling the pump inlet and outlet pipes.

Perfluoroplastic pump---is a centrifugal chemical pump that was developed earlier and used more commonly. Its pump head is all molded with fluoroplastics. The main materials are polymer materials, F26 materials, F46 materials, and fluoroplastic alloy materials. Due to different materials, the price error is also relatively large.

Manufacturers are easily confused when choosing, because the materials should be correctly selected according to the type of medium being transported, corrosiveness, medium temperature, and medium concentration. This type of pump is generally used to transport chemical fluids in factories and mines where the inlet and outlet pipe diameter requirements are relatively small and the flow head requirements are low. Because the pump head is made of fluoroplastics, the mechanical strength is relatively weak and it is easy to crack and age. The inlet and outlet pipes of the pump must be disassembled during maintenance. Otherwise, it is easy to damage the pump body due to external force and pipe gravity during maintenance and installation.

When choosing the two types of pumps, comprehensive considerations should be made. The pump price is relatively cheaper than the IHF pump. It can be selected when the inlet and outlet pipe requirements are below 80 and the flow head is below 30. The IHF pump with relatively large requirements is more suitable, and the IHF pump with a metal shell can better withstand the gravity of the pipe. It is also simpler and relatively safer to repair and replace accessories.