What are the advantages of screw pumps compared to other positive displacement pumps?

Core Technological Advantages of Screw Pumps

1. Stable Volumetric Delivery:

Utilizing a single-screw structure, a continuous volumetric cavity is formed between the rotor and stator, ensuring the delivery of the same volume of liquid per revolution with minimal flow fluctuation.

This constant volumetric characteristic is particularly important in industries with high metering accuracy requirements, such as chemical and pharmaceutical manufacturing.

2. High-Efficiency Self-Priming and Low NPSHr:

Screw pumps have superior self-priming capabilities compared to gear pumps and piston pumps because their rotor creates a larger negative pressure zone at the suction inlet, allowing for startup at lower suction inlet pressures.

Low net positive suction head (NPSHr) makes them superior for delivering high-viscosity or gas-containing liquids.

3. Compact Structure and Easy Maintenance:

The overall machine body adopts a modular design, allowing for quick disassembly and assembly of key components (such as the screw and bearings), resulting in short replacement cycles.

Jingjiang Meijia Pump Industry Co., Ltd. has an experienced engineering team that provides on-site rapid repair and spare parts replacement services, ensuring uninterrupted operation of the equipment throughout the year.

4. High Adaptability and Wear Resistance:

The screw and rotor are machined from high-strength alloy materials, enabling them to withstand corrosive media and high-temperature environments.

Meijia's single screw pumps have been proven over a long period in industries such as petrochemicals, energy, and pulp, and can operate continuously for many years under harsh conditions.