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2024-01-12 What are the materials and application scenarios for melt pumps?
Polymer melt pumps, as the core equipment in the polymer production process, can transport a wide range of materials, can be used under different pressure conditions, a variety of low-temperature, low-viscosity polymers to high-temperature, high-viscosity polymer reaction transport. Melt pump specific materials can be transported and what are the application scenarios? First, can be used in a variety of resins, chemical fibers, rubber and other industries polymer production process In the polymer reaction process, the materials that can be transported are: Other polymer materials industry in t
2024-01-10 How are melt pump speed and output calculated?
1, the melt pump speed per minute: RPM = n * f1/50/i; n is the rated speed of the motor; f1 is the frequency converter; i is the speed ratio of the gearbox. Example: 4-level motor rated speed n is 1450rpm, when the frequency converter f1 is 30HZ, speed ratio i is 29. melt pump speed per minute = 1450 * 30/50/29 = 30rpm 2, the melt pump hourly output: KG / H = CC * rpm * 60 * /1000; CC for the melt pump displacement; rpm for the melt pump speed per minute; for the melt density. Example: 100CC melt pump (melt pump displacement per revolution is 100ml), melt pump speed of 30 rpm, the density of t
2024-01-04 Why melt pump outlet pressure is low
Melt pump is one of the important key equipments in the field of polymer material molding and processing, which has the features of smooth flow, small pressure fluctuation and long service life. However, in practice, sometimes there will be a melt pump outlet pressure becomes low, which will not only affect the quality and yield of the product, but also increase production costs and maintenance costs. So, why the melt pump outlet pressure will become low? Polymer melt pump outlet pressure becomes low may have the following reasons: 1. Changes in the nature of the material The viscosity, densit
2023-12-25 Friction bearing technology for melt metering pumps explained
Bearings are one of the core components of melt metering pumps. Materials and designs must be carefully selected and coordinated to ensure the safe and efficient operation of the metering melt gear pump. Typically friction bearings are used in melt pump for extrusion. For this type of bearing, the inner diameter is slightly larger than the journal in which it is stored. The conveyed medium penetrates into this small area through a lubrication groove, through which the medium in the bearing forms a hydrodynamic lubrication film. The shaft floats in the bearing. In the case of friction bearings
2023-12-21 What are the common accessories for high temperature melt metering pumps?
Commonly used accessories for high temperature melt metering pumps include: gears, bushings, covers, drive system (motor + reducer), cross shaft universal coupling, electric heating rods, electric heating rings, cast copper heating plates, junction boxes, plugs, cold water rings, screw seals, thermocouples, pressure sensors and so on. high temperature melt pump gear Bushings for high temperature melt pumps High temperature melt pump cover High temperature melt pump motor Cross shaft universal coupling Electric heating rods For common specifications of high-temperature melt metering pump produc
2023-12-16 Characteristics of melt discharge pumps for EVA hot melt adhesives
ZB-F series melt discharge pump is specially used for conveying materials with high viscosity and high temperature. Used in PUR hot melt adhesive, PSA pressure sensitive adhesive, EVA hot melt adhesive, adhesive, glue, hot melt adhesive, resin, epoxy resin and other industries. Aiming at the high viscosity and high temperature of hot melt materials, we adopt the following four measures to ensure the normal operation of the pump design and selection. 1, melt discharge pump with special clearance, that is, increase the clearance of the pump body thermal expansion thermal compensation, to ensure
2023-12-15 What are the reasons for breaking the driven gear of polymer melt pump?
There are 2 main reasons for gear breakage of melt gear pumps for spur gears: The first reason is that the gear is subjected to a sudden overload will occur when the fracture phenomenon, from the disintegration of the foreign body is not found to enter, and from the fracture site in the root of the gear to see, can be excluded from the possibility of sudden overload fracture of the gear. polymer melt pump The second reason is because the gear teeth like a cantilever beam, loaded to the root of the bending stress generated at the large, coupled with the root of the transition at the transition
2023-12-11 Internal structure and working principle of polymer melt conveying pump
The internal structure of the polymer melt pump is composed of the pump body, front and rear side plates, two meshing gears, bearings, and seals; The space formed by the tooth profile of two gears, the pump body, and the side plate forms the feeding area, conveying area, and discharge area of the pump. Gears are the core components of melt pumps, with various structural forms: they can be divided into internal meshing and external meshing according to the meshing mode;; According to the tooth direction, it can be divided into spur gears, helical gears, and herringbone gears, but the commonly u
2023-12-07 Single Plate fast Hydraulic Screen Changer Application
Single plate screen changer is customarily called single plate fast hydraulic screen changer, this type of screen changer is widely used in the market because of its simple structure, high cost performance, wide range of application, and has the characteristics of no downtime, no leakage of material, smooth flow channel, simple operation and so on. Extruder single plate screen changer has simple structure and easy connection, and can be used with different specifications of single-screw extruder, twin-screw extruder, reactor to do direct connection, simplify the material flow path. single plat
2023-12-07 EPE pearl cotton extruder melt pump
EPE Pearl Cotton Extruder Melt Pump is a widely used equipment for EPE pearl cotton foam production. It has the advantages of high efficiency, stability, reliability, etc. It can provide stable extrusion pressure and flow for the production of pearl cotton and improve the production efficiency and product quality. The EPE pearl cotton extruder melt pump is made of high strength and wear-resistant material, which is able to withstand harsh conditions such as high temperature, high pressure and corrosion to ensure the long life and reliability of the equipment. At the same time, it has the advan
