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Batte Machinery Zhengzhou Co., Ltd.
E-mail: info@battemachinery.com
whatsapp: +86 158 38331071
Tel: +86 371 67991755
After-sales Tel: +86 371 67997677 / 67997877
Address:No.11 Changchun Road, High-tech Zone, Zhengzhou, China.

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melt pump for pvc extrusion

  • melt pump for pvc extrusion

Name: melt pump for pvc extrusion
Category: Melt pump design
Introduction:Introduction of special melt pump for PVCBart’s research and development of PVC special melt pumps are specialized in conveying, pressurizing an...
Manufacturer: BATTE Machinery China

Introduction of special melt pump for PVC

 

Batte’s research and development of PVC special melt pumps are specialized in conveying, pressurizing and metering polyvinyl chloride (PVC) high-viscosity polymers. PVC is a kind of heat-sensitive material, which is more sensitive to temperature changes. It is easy to cause carbonization, decomposition and even scorching of the material during the extrusion process. The inlet of the PVC series special melt pump adopts a horn-type flow channel, and the internal flow channel and the structure of the gear are optimized. The built-in melt self-lubricating, the lubricating material is discharged with the material. This structure is more suitable for the material characteristics of PVC.

melt pump for pvc extrusion

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PVC special melt pump structure

The PVC special pump is mainly composed of pump casing, driving gear, driven gear, sliding bearing, front and rear end plates, packing seal, etc.

PVC melt pump extru parameters

technical parameter Operating parameters
Pump body: high temperature tool steel, cadmium nickel alloy steel, titanium tantalum alloy
Gear: high temperature tool steel, nitrided steel, wear-resistant coating
Sliding bearing: high temperature tool steel, tungsten carbide, wear-resistant coating
Shaft seal: screw seal
Heating system: electric heating
Specifications/Flow range: 0.5CC-12000CC
Viscosity: ≤40000 Pa.s
Temperature: ≤400℃ (750℉)
Cleaning temperature: ≤450℃ (850℉)
Outlet pressure: ≤40MPa (6000psi)

Horizontal installation method of melt pump

horizontal installation method of melt pump

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Features of PVC melt pump

The melt discharge pump is a positive displacement conveying equipment. The high-precision gear gap and volumetric structure design make stable and balanced extrusion possible. It is used in chemical fiber, pelletizing, plastic film, sheet, plate, profile, Pipes, wires and cables, wire drawing, composite extrusion and other production lines have been widely used, and have achieved relatively good results:

1. It can realize stable extrusion, improve the dimensional accuracy of extruded products, and reduce the rejection rate. In the extrusion process, it is inevitable that the amount of material fed is uneven, the temperature fluctuations of the barrel and head, and the pulsation of the screw speed are unavoidable. The use of a melt gear pump can eliminate the feeding error of the feeding system, greatly reduce the fluctuation of upstream process transmission, quickly enter a stable working state, improve the dimensional accuracy of extruded products, and reduce the rejection rate.

external gear pump for pvc

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2. Increase output, reduce energy consumption, achieve low temperature extrusion, and extend the life of the machine. Since the extruder is equipped with a polymer melt pump, the decompression function of the extruder is transferred to the gear pump. The extruder can work at low pressure and low temperature, the leakage flow is greatly reduced, and the output is increased. The gear pump can build up the head pressure more effectively than the extruder, and can reduce the back pressure of the extruder, reduce the axial force of the screw, and extend the service life.

3. With linear extrusion characteristics, it is convenient for upstream and downstream equipment to coordinate work. Due to the low leakage flow of the gear pump, the delivery capacity of the pump is basically linear with the speed. After the speed of the gear pump is changed, its flow can be accurately known. Since the working speed of the upstream and downstream equipment and the gear pump can be determined, the gear pump can be used The pressure, temperature and other information collected at the inlet and outlet can realize online monitoring and feedback control of the entire extrusion process.

melt pump extruder for pvc

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batte melt pump part of the processing equipment in the workshop

batte melt pump part of the processing equipment in the workshop

Zhengzhou Batte Melt Pump Co., Ltd. is a professional manufacturer of melt pumps, screen changers and feeders integrating R&D and production. Located in the University Science and Technology Park of Zhengzhou High-tech Industrial Development Zone, it relies on the scientific research strength of domestic universities and combines European advanced technology and quality control concepts to integrate production, learning and research. Especially in the application technology of melt pump, has accumulated rich experience. Continuous in-depth research on the working principle, performance optimization, equipment structure optimization, control technology and other aspects of the melt pump has achieved considerable results, and has been recognized and praised by the vast majority of users in the industry. info@battemachinery.com

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