Equipment configuration of polypropylene spunbond hot rolling production line with a width of 5.1 meters

The production line uses all domestic equipment except the electric control part. The main equipment extruder screw diameter 220mm, with 280kW DC motor; with online recycling, with 24kW four-pole AC motor; using screw feeder loading; vertical double filter chamber filter, can be switched without stopping, each filter room The filtering area is 3.5m2; the spinning 36 stations, the spacing is 152mm, the angle between the spinning box axis and the production line is 17.5°, the metering pump supply is 30ml per revolution, and the 0.75kW four-pole synchronous motor is used; the total length of the drafting device is 1400mm. The length of the inlet is shortened from the original 250mm to 160mm; the pendulum type oscillating machine is equipped with a 3kW four-pole AC motor; the tunnel suction type netting machine is used, the width is 5.6m, the 15kW DC motor is used, the motor for the curtain is corrected, and the pre-pressing roller Directly heated by heat-conducting oil, driven by wire-forming machine motor; hot-rolling mill roll width 5.4m, diameter 720mm, single-roll weight 18t, hot-rolling mill double roll with 37kW DC motor, speed/rotation control; winding The machine is equipped with direct tension automatic control, equipped with 11kW DC motor; the heat transfer oil of the spinning box and hot rolling mill is heated at 108kW, using pneumatic oil and oil discharge; the drafting fan is equipped with 250kW two-pole AC motor, and the suction net fan is equipped with 160kW six. Extreme AC motor, side blower with 30kW four-pole AC motor.
Each production line is equipped with a transformer of 800kVA, installed on the second floor. The low-voltage busbar directly enters the incoming cabinet of the control room on the first floor, and then enters the control cabinet. The control room and the power distribution room are combined into one, saving the conventional low-voltage distribution. The cable that comes out of the cabinet and the cabinet to the control cabinet saves about 400,000 yuan.
In summer, the electricity consumption per ton of product is 632kW·h, and the electricity consumption per meter is 555kW·h. In winter, when the refrigerator is not opened, the electricity consumption per ton is 563kW·h, and the electricity consumption is 501kW·h.
The control system of the whole production line adopts a high-performance Siemens S7 300 programmable controller. The winding machine adopts an S7 200 programmable controller. The extruder and the rear spinning equipment are driven by a DC motor. The governor is used in the UK. Continental 590, the rest of the motor uses AC motor, the inverter uses Siemens' 400 series. The entire operating control of the entire production line uses two Siemens TP270 touch screens.
The communication adopts the Profibus open field bus network mode to form a distributed control system with centralized control of distributed control, reaching the international leading level in the same industry.