Gear pump is one of the important equipments in the blow molding film extrusion line, its function is to convey the molten state plastic into the blow mold through the rotation and extrusion of gears. Since the blown film extrusion line requires continuous, efficient and stable production, the performance and stability of the gear pump is crucial to the normal operation of the line.
Blown film extrusion melt gear pumps are a special type of gear pumps, whose working principle is similar to that of conventional gear pumps in that the rotation and extrusion of gears are used to realize the transportation of plastic melt. However, blow molding film extrusion melt gear pumps have higher requirements in design, material, manufacturing process to meet the special needs of blow molding film extrusion line.
First of all, the gears of blow molding film extrusion melt gear pumps must be made of high precision and high hardness materials to ensure their abrasion and corrosion resistance. At the same time, the gears must be very finely designed to ensure the stability and accuracy of their rotation and extrusion.
Secondly, the sealing performance of blow molded film extrusion melt gear pumps is extremely demanding and must be able to prevent leakage and contamination of the plastic melt. Therefore, seal materials and designs must have excellent resistance to high temperatures, corrosion and wear.
In addition, the drive and control system of the blow molding film extrusion melt gear pump is also one of the key factors in its performance. The drive system must be able to provide stable and efficient rotary power, while the control system needs to accurately control parameters such as pressure and flow rate to ensure that the blown film produced is of stable quality and uniform thickness.
In general, blown film extrusion melt gear pump is a highly specialized equipment, its design, manufacture and use of each link must be strictly controlled and managed. Only by ensuring the performance and stability of the gear pump can we guarantee the continuous, efficient and stable production of the blown film extrusion line.
In practical applications, blow molding film extrusion melt gear pumps also face some challenges and problems. For example, the performance of the gear pump may be affected due to changes in the characteristics of the plastic melt and production conditions. In order to solve these problems, a series of measures need to be taken, such as optimizing the design, choosing more suitable materials, improving the level of manufacturing process, and strengthening the maintenance and repair of equipment.
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