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Gear pumps - answers to questions - SPE Extrusion Division

Professor McKelvey did an excellent write-up (as always) titled "New Data Show How Gear Pumps Boost Extrusion Productivity". Reduce screw wear in situations where the length to radius of gyration ratio of the screw may tend to cause the screw to buckle under a high pressure. Adequate filtration between the extruder and gear pump may ...<< more>>

High-pressure extrusion pumps - Nordson Xaloy - PDF

A closed-loop drive control variesextruder screw speed to assure an adequate amount of polymer to the pump regardless of inlet pressure variations due to extruder surge and screw beat. Precise construction makes Xaloy Melt Pumps extremely accuratevolumetric metering devices. ...<< more>>

TROUBLESHOOTING GEAR PUMP ASSISTED SINGLE-SCREW EXTRUSION

Gear pumps are often used in tandem with single-screw extruders to increase rate, decrease resin consumption, improve process stability, decrease extruder discharge pressure, and decrease the ...<< more>>

Use of Gear Pumps for Extruders | Extrusion | Pump

Around 1980 we began to see gear pumps adapted to higher die resistances, which require a heavier pump, notably the sides, which might bow (clam-shell) under high pressure if too thin and thus allow back-flow and compromise the positive-conveying feature of the pump. ...<< more>>

Extrusion Pumps (Extrusion Pump) - 24 Manufacturers

Extrusion Pumps Manufacturers, Traders, Suppliers. Extrusion Pumps - Extrusion pumps-Gear pump as a melt pump special displacement volume of 2.78 cc to 12,000 cc per In order to prevent the pump's drive shaft from being driven/pushed out of the housing when there is a high pressure on the suction side (extruder conveying pressure), the ...<< more>>

Plastic melt pump extrusion,plastic extrusion melt pump

Plastic melt pump extrusion is used for transportation, pressurization or the metering of the high temperature and high viscosity plastic melt. So it is also be called plastic extrusion melt pump or melt pump extrusion for plastics. ...<< more>>

Gear pump cleaning - Batte Machinery Zhengzhou Co.,Ltd

Gear pump cleaning is importannt because that gear pump screens are typically used to protect the extrusion melt pumps from hard contaminants that could jam in the (very) tight clearances and lubrication channels, in addition to their usual functions of keeping contaminants out of the product, and control of mixing in the last zone of the screw pump (tighter screens, more pressure, better mixing). ...<< more>>

OILGEAR: Best Under Pressure

A compact, high-pressure pump. The PFBA pump has proved itself successful for use with high water content and low-viscosity fluids. These axial piston pumps are used in a wide variety of applications, including die casting and injection molding machines, high pressure test rigs, civil and marine projects, intensifier systems, extrusion presses, forging presses and high pressure forced ...<< more>>

FAQ - Batte Melt pump Zhengzhou Co. Ltd

FAQ about extrusion gear pump and extrusion equipment technology will help you know more details about Batte products and make a good choice. ...<< more>>

N9000 Pedestal Bronze Rotary Gear Pumps

Suction Lift: Close tolerances and the positive pumping action make the rotary gear pump capable of lifting water on the suction side as high as 20 feet. Though gear pumps are self priming, a foot valve is recommended. ...<< more>>

ZB-R series gear melt pump for rubber extruder

This series of rubber extruder pump applies to butadiene rubber, chloroprene rubber, EPDM, SBR, NBR, natural rubber, etc. Technical Parameter of Melt pump for rubber extruder Melt Pump Body: high temperature tool steel, chromium-nickel steel ...<< more>>

high temperature screw suppliers and high temperature

Product Summary. High temperature screw is a kind of a screw, or bolt, which is a type of fastener characterized by a helical ridge, known as an external thread or just thread, wrapped around a cylinder. ...<< more>>

Double-Suction, Twin-Screw Pump - Flowserve

Double-Suction, Twin-Screw Pump. 2 Flowserve is the driving force in the global industrial gear pump ? MSP vertical in-line, medium speed pump Complementary Pumps GR MSP Gearex. 4 ? High-pressure, high-temperature bolt-on hot oil or steam ...<< more>>

SCREW DESIGN BASICS - TAPPI

The single screw extruder is basically a volumetric pump. It is not a positive displacement device. Variations in feeding – Barrel Zone Temperature (s) [over solids] – High Entrance Pressure – High Screw Speed – High Melt Viscosity. Moving wall ...<< more>>

Cooper Technology - Melt Pumps

BKG? BlueFlow? Melt Pumps (formerly Xaloy?) Extrusion Line Synchronization Made Easy. With a BKG? BlueFlow? Gear Pump (former Xaloy? brand) between your extruder and die you can directly dial in gauge control, eliminating extruder surge and screw beat at the die. ...<< more>>

EPS Extruder Pump ? Maelstrom Advanced Process Technologies

The EPS is a single screw extruder that is optimised for high viscosity fluid pumping. Variable screw geometry for feed, compression and metering zones provides excellent material control and liquid-cooling or heating of the screw and barrel are possible, for thermal regulation. ...<< more>>

BKG Standard Gear Pumps type MSDP | Nordson POLYMER

BKG? BlueFlow? Standard Gear Pumps MSDP The BKG ? BlueFlow? gear pump types MSDP helps optimize the process, so the extrusion line produces optimal quality with the highest throughput possible. The gear pump has a rheologically optimized inlet and outlet geometry to guarantee a very controlled transport of material. ...<< more>>

Gear Pump - China Pump, Hydraulic Pump Manufacturers

KCB series High Efficiency Electric Self Priming Gear Oil Pump Introduction This gear pump is composed of gear, shaft, pump body, safety valve, and shaft-end seal. The gear, Shanghai YL Pump Co., Ltd. ...<< more>>

Steam Jacketed Pumps Suppliers - ThomasNet

Precision gear metering pumps such as extrusion/discharge metering pumps, hazardous/toxic materials metering pumps, high/low viscosity metering pumps, high pressure metering pumps, multiple streams metering pumps, spraying/coating metering pumps, dosing pumps, drum metering pumps, submersible metering pumps and platen based drum metering pumps ...<< more>>

FLOW SURGING IN SINGLE-SCREW, PLASTICATING EXTRUDERS - TAPPI

Screw speed, extrudate temperature, and barrel zone temperatures for a large-diameter extruder running stable and unstable. At about 410 minutes into the run, the extruder started to operate unstably, as indicated by Figures 3, 4, and 5. ...<< more>>

Meltpump - battemachinery

ZB-H series high temperature and pressure melt pump is used for transportation, pressurization or the metering of the high temperature and high viscosity polymer melt.This melt pump is applicable for engineering plastic or blown film technique....