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You probably don't know much about HAIKE melt pump, let alone know the application of HAIKE melt pump in wood plastic production line, so let's take a closer look now.
The wood plastic profile production line is mainly used for PVC+wood flour, the production of corner lines, door side lines, door cover lines, shutters, photo frames, mirror frames, door frames, door covers, window covers, standing sills, stair handrails, decorative gussets, furniture materials Extrusion of other profiles. The production line adopts original wood plastic technology and formula, can design different product proportions according to different profile sections, different purposes, choose different specifications of wood plastic special twin-screw extruders, and cooperate with Haike special melt pumps. The traction machine adopts unique technology, works smoothly, has good reliability and great traction. The vacuum shaping adopts a special enlarged eddy current cooling system, which is convenient for cooling and shaping to meet the needs of the production characteristics of wood plastic profiles. The sawing device is synchronized with the drawing speed of the profile, the design is reasonable, the operation is stable, it can automatically cut to length, and is equipped with a dust recovery device.
Melt pumps are mainly used for conveying, pressurizing and metering high-temperature and high-viscosity polymer melts. Its main function is to pressurize and stabilize the high temperature melt from the extruder, and keep the melt flow rate accurately and stably fed into the extruder head. Nowadays, melt gear pumps have been widely used in the production lines of chemical fiber, granulation, plastic film, sheet, plate, profile, pipe, wire and cable, wire drawing, composite extrusion, etc. The processable materials almost cover most of the polymer Materials, such as: PE, PC, PP, PVC, HIPS, PS, PA, TPUR, fluoropolymer, polysulfone, polyester, thermoplastic elastomer, rubber and thermal adhesives, etc. The Haike melt pump is a positive displacement conveying equipment. The high-precision gear gap and volumetric structure design make stable and balanced extrusion possible. It is used in chemical fiber, granulation, plastic film, sheet, plate, profile, pipe , Wire and cable, wire drawing, composite extrusion and other production lines have been widely used, and achieved relatively good results:
1. It can realize stable extrusion, improve the dimensional accuracy of extruded products, and reduce the rejection rate. In the extrusion process, it is difficult to avoid the unevenness of the material feed, the fluctuation of the temperature of the barrel and the head, and the pulsation of the screw speed. The use of a melt gear pump can eliminate the feeding error of the feeding system, greatly reduce the fluctuation of upstream process transmission, quickly enter a stable working state, improve the dimensional accuracy of extruded products, and reduce the rejection rate.
2. Increase output, reduce energy consumption, realize low-temperature extrusion, and extend the life of the machine. Because the extruder is equipped with a polymer melt pump, the decompression function of the extruder is transferred to the gear pump. The extruder can work at low pressure and low temperature, the leakage flow is greatly reduced, and the output is increased. The gear pump is easier to effectively build up 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. With linear extrusion characteristics, it is convenient for upstream and downstream equipment to coordinate work. Due to the low leakage flow of the gear pump, the delivery capacity of the pump is basically linear with the speed. After the speed of the gear pump is changed, its flow can be accurately known. Since the working speed of the upstream and downstream equipment and the gear pump can be determined, the gear pump can be used The pressure, temperature and other information collected at the inlet and outlet can realize online monitoring and feedback control of the entire extrusion process.
Looking at the above application of HAIKE melt pump in wood plastic production line, everyone knows that melt pump plays a great role in wood plastic production line, so it won’t work without melt pump.