A fan is composed of a casing, inlet bell, impeller, main shaft, bearing seat, coupling, pulley, belt cover, motor, etc; So let's have a detailed understanding of the sealing properties between the part of the fan that comes into contact with the gas and the rotor bearing seat;

Plastic fans and fiberglass fans have different materials and workmanship, but their other principles are basically the same; The same fan casing and inlet clock have different workmanship:PPThe plastic fan is made ofPPMade by welding plates, each welding is the connection between plates. If the welding is not good, there will be leaks or unreliable welding, which will result in air leakage; The workmanship of the fiberglass fan is different. It is made of fully fiberglass material that is demolded and formed as a whole, with stainless steel bolts embedded in the casing at the joints. There is basically no air leakage;

So, regarding the different materials: fiberglass material has specific temperature resistance, acid and alkali resistance, corrosion resistance, etc., and ordinary fiberglass can reach a temperature of up to80℃The temperature resistance and temperature resistance of plastic fan materials can only reach60℃Its temperature resistance, acid resistance, and alkali resistance are slightly inferior to those of fiberglass materials.

Is the sealing performance of the rotor bearing seat related to the above two types of fans? In fact, it is not; The difference between plastic fans and fiberglass fans is that the material of the fan casing is different, while everything else is the same; The sealing performance of bearings is also the same, which does not include the type of fan. In other words, the sealing performance of the rotor bearing seat of fiberglass fans and plastic fans is the same; The difference is that the connection between the rotor and the fan casing requires professional sealing devices, such as PTFE seals, fiberglass seals, mechanical seals, etc; According to the different needs of users, the requirements of the product are also different; So we must distinguish the products we truly need before purchasing.