1. Purpose and scope of application This production line is mainly used for the production of PERT (heat-resistant polyethylene) pipes. This pipe is a non-crosslinked polyethylene pipe that can be used for hot water. Some people have highlighted its non-crosslinked characteristics. High temperature non-crosslinked polyethylene pipe". Mainly used in plumbing and heating systems, central air conditioning piping systems, ground radiation heating systems, solar water heater systems and other industries. 2. Equipment composition and characteristics The PERT pipe production line produced by our company has a unique structure, high degree of automation, convenient operation, and stable and reliable continuous production. Production process: raw materials → vacuum feeding → raw material drying → single screw extruder → spiral mold → low temperature cooling sizing sleeve, high water level box → immersion vacuum setting box → immersion cooling water tank → immersion cooling water tank → inkjet printer → belt Tractor→Double station winder→Finished product inspection and packaging Main features of equipment: Extrusion equipment: Single screw extruder adopts slotted barrel and new BM screw, which has high screw speed, output and plasticizing ability. Extrusion die: It adopts a spiral split head, which has the characteristics of uniform discharge, convenient adjustment, and reduction of extrusion welding marks. Through the improvement of the head, it effectively avoids the melt fracture during the extrusion process and guarantees PE- High finish of RT pipe surface. The disc-type sizing sleeve is used because the friction force with the surface of the pipe is very small, to avoid the adhesion of the pipe and the sizing sleeve. Vacuum sizing device: The total cooling length is 17 meters, including one vacuum sizing box and three cooling water tanks. The purpose of the cooling length configuration is to meet the amount of cooling required to produce 20x2.0mm pipe at a line speed of 15/min, while also taking into account the additional cooling required by the coil. Traction machine: Two-claw belt type high-speed traction machine adopts frequency conversion stepless speed regulation to meet the requirements of tube production for traction stability. Double-station automatic winding machine: with tension control and automatic adjustment of winding speed, equipped with cable arrangement device. There are a variety of electrical control systems for selection (such as: PLC automatic control system), the production speed is fast and stable, and the control is simple and easy to operate.
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