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.
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The composition structure and self-lubricating principle of the melt conveying gear pump
The melt conveying gear pump mainly consists of a pump casing, driving gear, driven gear, sliding bearings, front and rear end covers, packing seals, etc. Most melt gear pumps that transport high viscosity and high-pressure polymer melts use involute helical gears, which have less pulsation during the transportation process.
The gear and shaft of the melt conveying gear pump are integrated to improve its rigidity and reliability. The melt gear pump adopts sliding bearings, and a spiral flow channel is machined on the non load-bearing surface of the bearing inner wall. The spiral groove rotates in the same direction as the gear shaft. The outer end of the bearing is connected to the inlet of the pump, and the spiral groove at the inner end of the bearing is connected to the root of the gear teeth (vacuum part). When the shaft rotates, with the help of the spiral action and the pressure difference between the two ends of the bearing, some of the melt is fed into the gap between the journal and the sliding bearing from the high-pressure end. After lubricating and cooling the journal and bearing, it flows into the newly disengaged teeth at the low-pressure end through the lubrication channels on the pump casing and end cover, forming a fully lubricated and quickly dissipated spiral self-suction lubrication system. Viscous lubricants are prone to forming dynamic pressure oil films with strong load-bearing capacity. A large amount of lubricant circulation continuously carries away the heat from the journal and bearings, providing good lubrication and cooling effects on the journal and bearings.
For high viscosity gear pumps, the suction port diameter is generally large, and sometimes a diffusion shaped suction port is used to expand the volume of the low-pressure zone to reduce the flow rate of the inlet liquid and reduce the suction resistance of the pump. This structure can also reduce the radial force acting on the journal and bearings, extending the service life of high viscosity gear pumps. The shaft seal of the melt gear pump adopts a combination form of reverse spiral and packing seal, and the key factor for the success of the combination form is to control the pressure of the sealing chamber.
Email: info@battemachinery.com
Whatsapp: +86 158 38331071
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