The operating temperature and operating pressure of the melt gear pump for masterbatch granulation are its key performance parameters. Below is a detailed elaboration on these two parameters:
I. Operating Temperature
Melt gear pumps are commonly used for conveying high-temperature materials, and their operating temperature range is broad. Generally speaking, the operating temperature of ordinary melt gear pumps can reach 300°C to 350°C, which can meet the conveying requirements of most plastic melts. However, for some special high-temperature conditions, materials and designs with higher temperature tolerance may be required. There are melt gear pumps on the market that can withstand even higher temperatures, with an operating temperature limit of up to 400°C or even 500°C. When selecting, users should determine the appropriate operating temperature range based on actual usage requirements and material characteristics.
II. Operating Pressure
The operating pressure of melt gear pumps is commonly represented by three parameters: maximum inlet pressure, maximum outlet pressure, and maximum pressure difference. Below is a detailed introduction to these parameters:
Maximum Inlet Pressure: The maximum inlet pressure of melt gear pumps typically ranges from 10 to 30 MPa. Melt gear pumps of different models and specifications may have different maximum inlet pressures. For conditions requiring high pressure, melt gear pumps with higher inlet pressures can be selected.
Maximum Outlet Pressure: The maximum outlet pressure of melt gear pumps is a key performance indicator that determines the maximum pressure the pump can convey melts. Generally speaking, the maximum outlet pressure of ordinary melt gear pumps is around 35 MPa. However, for conditions requiring high pressure, there are melt gear pumps on the market that can provide even higher outlet pressures, up to 50 MPa or even higher.
Maximum Pressure Difference: The maximum pressure difference of melt gear pumps refers to the maximum pressure difference that the pump can withstand when conveying melts. This parameter is of great significance for ensuring stable operation of the pump and extending its service life. Generally speaking, the maximum pressure difference of melt gear pumps is around 25 MPa. However, for some special conditions, melt gear pumps with greater pressure difference tolerance may need to be selected.
In summary, the operating temperature and operating pressure ranges of melt pumps for masterbatch granulation are broad. Users should determine the appropriate parameter ranges based on actual usage requirements and material characteristics. When selecting melt gear pumps, besides considering these two key parameters, attention should also be paid to the pump's structure, material, sealing performance, maintenance, and other requirements.
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