Http:// http:// The role of the melt pump The melt pump is a positive displacement conveying device with high-precision gear clearance and volumetric structure design, making stable and balanced extrusion possible, in chemical fiber, granulation, Plastic film, sheet, sheet, profile, pipe, wire and cable, wire drawing, composite extrusion and other production lines have been widely used, and achieved good results: Solar Panels,275W Solar Panels,260W Poly Solar Panels,Full Power Mono Solar Panels ZHONGWEI CITY YINYANG NEW ENERGY , https://www.yinyangnewenergy.com
1. It can achieve stable extrusion, improve the dimensional accuracy of extruded products and reduce the scrap rate. During the extrusion process, uneven material feeding, fluctuations in barrel and head temperature, and pulsation of screw speed are difficult to avoid. The use of the melt gear pump can eliminate the feeding error of the feeding system, can greatly reduce the fluctuation of the upstream process transfer, quickly enter a stable working state, improve the dimensional accuracy of the extruded product, and reduce the scrap rate.
2. Increase production, reduce energy consumption, achieve low temperature extrusion, and extend the life of the machine. Since the extruder is equipped with a polymer melt pump, the decompression function of the extruder is transferred to the gear pump, and the extruder can work under low pressure and low temperature conditions, the leakage flow is greatly reduced, and the output is improved. The gear pump can more easily and effectively establish the head pressure than the extruder, and can reduce the back pressure of the extruder, so that the axial force of the screw is reduced and the service life is prolonged.
3. It has linear extrusion characteristics, which facilitates the coordination of upstream and downstream equipment. Since the gear pump has less leakage flow, the pump's conveying capacity is basically linear with the speed. After the gear pump speed is changed, the flow rate can be known exactly. Since the working speed of the upstream and downstream equipment and the gear pump can be determined, the gear pump can be used. The information such as pressure and temperature collected at the entrance and exit will realize online monitoring and feedback control throughout the entire extrusion process.
4. It is possible to feed a melt pump at the same time with multiple small and medium-sized extruders. The melt is pressurized by the melt pump and then supplied to the machine head to extrude large-scale products (large-diameter pipes, wide plates, membranes, etc.) . The production line of this configuration is compact in structure and small in footprint; the cross-sectional size of the extruded product is more precise and easy to control.
5. The melt pump is arranged on the single-screw exhaust extruder, which makes the system easy to operate and has excellent performance. At high head pressures and high throughput, the amount of extrusion can be adjusted at will and no material is expected. In the extrusion line, the cost is increased by the addition of the melt pump system, which is offset by the benefits obtained from the many benefits mentioned above, and the investment can usually be recovered in half a year or less. Melt pump assisted plastic extrusion has become increasingly widespread in industrialized countries, and domestic applications due to the development level of the plastics industry have been less used in the past. With the fierce competition among domestic plastics processing companies, people will have to have high-quality and high-precision requirements for extruded products; more energy-saving requirements for energy-saving in extrusion process and high-yield and low-energy requirements for processing equipment. attention. The use of melt pump technology as soon as possible is an effective and sensible way to meet this requirement.
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The role of the melt pump