What is the structure of the melt pump polymer? Let's take a look.
The melt metering pumps is a positive displacement conveying device, and the flow rate is strictly proportional to the speed of the pump. It is mainly composed of pump casing, driving gear, driven gear, sliding bearing, front and rear plates, packing seal, etc. The feeding area, the feeding area and the discharging area of the pump are constituted by the tooth profile of the two gears, the pump body and the side cover. When working, it relies on the change of the working volume caused by the mutual meshing of the main and driven gears to transport the melt. The working volume is composed of the pump body, the tooth groove of the gear and the bearing with the function of the side plate (ie the feeding area). When the gear rotates in the specified direction, the melt enters the tooth grooves of the two gears in the feeding area. As the gears rotate, the melt is brought into the feeding area from both sides, and the gears mesh again to make the melt in the tooth grooves. The body is extruded out of the discharge area and pressed to the outlet pipe. As long as the pump shaft rotates, the gear will press the melt to the outlet side, so the pump outlet can reach a high pressure, but there is no high requirement for the inlet flow and pressure, and even the inlet vacuum can be sucked.
The main application is the transportation, pressurization and metering of high temperature and high viscosity polymer melts. hot melt machine pump have been widely used in chemical fiber, granulation, plastic film, sheet, plate, profile, pipe, wire and cable, wire drawing, composite extrusion and other production lines. The materials that can be processed 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 adhesive, etc. According to the tooth direction, it can be divided into straight teeth, helical teeth, herringbone teeth, etc. info@battemachinery.com
