Melt Pump
- Polymer extrusion melt gear pump
- melt pump for plastic extrusion
- Polymer Reaction Kettle pump
- gear pump rubber extruder
- melt pumps for extrusion
- Melt Gear Pumps for BOPP Films
- ZB-G bearing external melt pump
- melt pump for pvc extrusion
- ZB double shaft drive melt pump
- Explanation of terms for melt pump d
- ZB-X Series chemical gear melt pump
- PID Control System for extrusion
- PLC Control System for extruder
- ZB-U series melt extrusion spinning
- ZB-E series transfer melt pump for e
- ZB-H series high temperature and hig
- ZB-R series gear melt pump for rubbe
- ZB-K series chemical stainless steel
- ZB-D series pipeline melt pump for p
- ZB-F series melt pump for reaction k
- ZB-B series dosing standard thermopl
- ZB-C series plastic granule machine
Screen Changer
- polymer melt filtration screen changer
- recycled plastic screen changer
- slide plate screen changer
- pillar screen changer
- dual bolt screen changer
- continuous screen changer
- screen changer polymer filter
- Plastic extruder filter extrusion sc
- Biodegradable plastic PBAT/PLA hydra
- Single plate hydraulic screen change
- plastic extrusion screen changer
- single plate hydraulic quick screen
- Manual control screen changer
- Double plate continuous hydraulic sc
- Automatic mesh belt continuous scree
- Double piston four screen cavities c
- Single plate double screen cavities
- Single piston double screen cavities
- Double piston four screen cavities b
- Dual Bolt double screen cavities hyd
Feeding System
- force feeder extruder
- loss in weight feeder for masterbatc
- continuous feeding system
- Liquid loss in weight feeder
- china volumetric screw doser feeder
- Multi-component loss in weight feede
- Micro loss in weight metering feeder
- Single screw gravimetric dosing feed
- Twin screw loss in weight metering f
melt blown progress
contact us
- Batte Machinery Zhengzhou Co., Ltd.
- E-mail: sale@meltpump.com
- whatsapp: +86 158 38331071
- Tel: +86-371-67991755 / 67992755
- FAX:+86-371-67993277
- Address:No.11 Changchun Road, High-tech Zone, Zhengzhou, China.
News
- Precision extruder melt pumps for th
- Melt gear metering pump role and par
- What are the materials that can be c
- Core Functions, Principles and Techn
- Selection and use of melt pumps
- Fluoroplastic extrusion melt pump
- Sheet extruder melt pump core advant
- Melt Pump Models
- Melt pump and screen changer for pla
- High Precision Melt Metering Pumps
Precision extruder melt pumps for the rubber and plastic industry
In the rubber and plastic industry, precision extruder melt pump as a key equipment, mainly used for high temperature and high viscosity polymer melt conveying, pressurization, pressure stabilization and metering, especially in the need for high stability of pressure and flow rate of the precision extrusion system is outstanding. The following from the working principle, structural characteristics, performance advantages, application scenarios and selection of five aspects of the detailed analysis:
First, the working principle
melt pump based on the principle of positive displacement conveying, through the precision meshing of the active gear and the slave gear to form a closed working volume. When the gear rotates, the working volume changes periodically, realizing the inhalation, conveying and discharging of the melt. This process ensures that the melt is conveyed at a constant, precise flow rate, providing stability for the subsequent extrusion process. For example, in pipe production, the melt pump eliminates pressure pulsations caused by fluctuations in extruder parameters, resulting in a significant increase in pipe thickness uniformity.
Second, structural characteristics
Core components
Pump head: consists of pump casing, front and rear side cover, gear shaft, sliding bearing and shaft seal. The pump casing adopts the whole casting process to ensure the structural strength and sealing; the gear shaft adopts straight tooth or helical tooth design to improve transmission efficiency and reduce noise.
Sealing system: the shaft seal adopts spiral external design, effectively preventing the melt leakage and guaranteeing the safety and hygiene of the equipment.
Heating system: Heating by electric heating rod or thermal medium, precise control of the melt temperature to prevent solidification.
Drive and control
The drive system includes motor, reducer, universal coupling, supports frequency conversion speed regulation, and can flexibly adjust the flow rate.
The control system monitors the pressure, temperature and other parameters in real time to realize the whole online feedback control.
Third, the performance advantages
Stable output pressure
melt pump can eliminate material output instability and pressure pulsation caused by fluctuations in extruder parameters to ensure the dimensional accuracy of extruded products. For example, in film production, pressure stability can be improved to reduce film thickness deviation by more than 50%.
Improved product quality
Minimizes extrudate dimensional tolerances, reducing scrap and reject rates. Optimize gear design for low shear stress under high pressure to protect the physical properties of the rubber melt and avoid shear damage.
Enhance production efficiency
Reduce the pressure requirement on the screw, the screw can be extruded at high speed and high efficiency, and at the same time, adjust the back pressure of the extruder to reduce the melt residence time and stabilize the plasticizing process.
Data show that the combination of coaxial twin-screw pelletizer and melt pump improves mixing quality and production significantly and reduces unit energy consumption by 25%-50%.
Extend equipment life
Reduces pressure inside the extruder screw barrel, reduces screw and barrel wear, and reduces gearbox thrust bearing load.
Wear-resistant bearings and dynamic lubrication technology improve the load capacity and impurity tolerance, ensuring stable operation for a long time.
Fifth, Application Scenarios
Pipe and Sheet Production
Melt pump ensures stable melt pressure for uniform pipe/sheet thickness, especially for products requiring high precision, such as medical plastic catheters and optical fiber sheaths.
Film and Sheet Extrusion
Precise control of extrusion pressure optimizes film surface quality, reduces defects such as crystal spots and streaks, and improves optical properties.
Chemical Fiber Spinning
Stabilizes melt transport, improves fiber strength and uniformity for the production of man-made fibers, industrial filaments and more.
Mixing and Pelletizing
Used in tandem with twin-screw extruder to improve mixing quality, granule consistency is significantly improved and energy consumption is reduced.
Sixth, Suggestions for selection
Temperature and pressure range
Select the working temperature according to the material characteristics: ordinary series (≤400℃) or high temperature series (≤510℃).
The outlet pressure should cover the process demand, such as pipe production needs ≥30MPa, chemical fiber spinning needs ≥50MPa.
Flow rate and viscosity matching
Flow rate needs to be matched with the extruder capacity, to avoid overloading or idling of the pump body.
The viscosity range should be adapted to the material characteristics, e.g. rubber melt viscosity up to 40,000 Pa-s.
Material and seal form
The pump body and gears are made of tool steel, high-speed steel or coated to resist corrosion and wear.
The sealing form is screw seal, packing seal or mechanical seal according to the process requirements.
Precision extruder melt pumps realize precise control of melt pressure and flow rate through the principle of positive displacement conveying, which significantly improves the productivity, product quality and equipment life in the rubber and plastic industry. In the high-precision extrusion scenarios of pipes, films, chemical fibers, etc., melt pumps have become indispensable core equipment. When selecting the type, it is necessary to comprehensively consider the temperature, pressure, flow, viscosity and other parameters, and select a technically reliable manufacturer to maximize the return on investment.
Email: sale@meltpump.com
WhatsApp: +86 158 3833 1071
Previous:Melt gear metering pump role and parametersNext: I'm sorry no