When the PP yarn string wound filter cartridge machine produces the filter element, it is fed into the screw extruder by the automatic feeding device. The raw material is heated and melted in the screw extruder and sent to the melt filter to filter out the impurities in the melt. The utility model enters the distributor, and is evenly distributed by the gear metering pump to each of the two melt-blown dies on the left and right sides, and is extruded through the small holes of the melt-blown die.
At this time, the melt at the small hole of the die is drawn on both sides of the die, and the high-temperature high-speed airflow provided by the air compressor and the air heater is strongly drawn into ultra-fine short fibers, which are received and formed by the two sets of filter receiving devices. The equipment is a specially designed rotating shaft, and the meltblown fibers are repeatedly wound on the rotating shaft and continuously drawn to form an infinitely long cylindrical filter element.
Different fiber densities and wall thicknesses were obtained by adjusting the process parameters, and then cut by a fixed length to form a meltblown filter product. The design of PP yarn winding filter machine can improve the rationality of equipment matching, and adopt new heater to reduce the installed capacity by 30~40KW. Thereby reducing the production cost of the product.
PP yarn string wound filter cartridge machine adopts high-precision control technology such as frequency conversion, solid state relay PID adjustment, pneumatic and so on to improve the accuracy and stability of equipment operation and process control. The small hole of the whole die has high precision, good consistency and no maintenance and wear, which improves the quality and uniformity of the meltblown fiber, thereby improving the product quality. At the same time, it can improve the service life and service life of the die, reduce the operation time of replacing the die, and reduce the maintenance cost.