Advantages of polyester high temperature gear pump and shortcomings in practical application
Zhengzhou Batte provides a new type of polyester high-temperature gear pump, which is specially designed for transporting polyester solution and pressurizing equipment; polyester high-temperature gear pump has the advantages of compact structure, reliable operation, low energy consumption, high volumetric efficiency, small shearing effect on the solution, stable flow at high viscosity and high pressure, and no pressure fluctuation at the outlet. It plays an irreplaceable role in poly cool production.
For the deficiencies of polyester high-temperature melt gear pump in the actual production line operation, Bart high-temperature melt pump manufacturers from the following two aspects: 1, because the polyester production is continuous operation, installation of mechanical seal process, sealing fluid can not run, gear pump temperature as high as 310 degrees Celsius caused rapid expansion of graphite wedge ring. After the sealing fluid is put into use, the temperature of the sealing chamber is reduced, and the wedge ring is contracted, which leads to the leakage of the mechanical seal. For those mechanical seals replaced due to leakage, the static pressure test shows that the wedge-shaped ring between the moving ring and the sleeve is the main factor causing the mechanical seal failure. 2, the mechanical seal of this structure requires a higher level of installation for maintenance personnel. In the installation process, it is not easy to locate accurately, resulting in the deflection of the moving ring, resulting in the leakage of the machine seal.