ZLB vertical axial-flow pump

Industry knowledge

How does ZLB vertical axial flow pump manufacturer choose the materials of the pump body and key components to ensure its corrosion resistance and durability?

Analyze conveying media:
The manufacturer first needs to understand what media the pump will be used to transport. The properties of the medium (such as corrosiveness, viscosity, temperature, etc.) will directly affect the selection of materials.
If the medium contains corrosive substances, the materials of the pump body and key components must have good corrosion resistance.
material selection:
For applications with higher corrosion resistance requirements, stainless steel (such as 304, 316, etc.) is usually the first choice. These materials have excellent corrosion resistance and are resistant to a wide range of chemicals.
Cast iron is also a viable option in some applications, but is generally not as corrosion-resistant as stainless steel.
For certain corrosive media, higher levels of corrosion-resistant materials may be required, such as ceramics, plastic alloys (such as Hastelloy), or special alloys.
For key components such as impellers and shafts, it may be necessary to choose materials with high strength and wear resistance, such as ZG310-570 cast steel or other alloy steels.
Consider economics:
Manufacturers also need to consider cost-effectiveness when selecting materials. High-performance materials typically cost more, but may offer longer service life and lower maintenance costs.
Therefore, manufacturers need to conduct a thorough cost analysis to determine the best material selection.
Manufacturing process and quality control:
Manufacturing processes and quality control are critical to ensuring corrosion resistance and durability of the pump body and critical components.
ZLB vertical axial flow pump manufacturers should adopt advanced casting, welding and heat treatment technologies to ensure material quality and performance.
In addition, manufacturers should implement strict quality control measures, including material inspection, dimensional inspection, non-destructive testing, etc., to ensure that each component meets the design requirements.
Environmental adaptability:
Manufacturers also need to consider the operating environment of the pump, such as temperature, humidity, pressure and other factors.
These factors can affect material performance and longevity. Therefore, when selecting materials, manufacturers need to ensure that the selected materials can adapt to the specific operating environment.
Maintenance and care:
The manufacturer should provide detailed maintenance and care instructions to help users maintain and use the pump correctly.
Regular maintenance and upkeep can extend the life of your pump and improve its performance. The manufacturer should provide the necessary tools and spare parts to support the user's maintenance and upkeep work.
Continuous improvement and research and development:
Manufacturers should continue to pay attention to the development of new materials and new technologies, and constantly improve and optimize pump design and material selection.
Through continuous improvement and research and development, manufacturers can provide ZLB vertical axial flow pump products with higher performance, more corrosion resistance and more durability.

Which sealing technology does the ZLB vertical axial flow pump manufacturer use to prevent ZLB vertical axial flow pump leakage?

For vertical axial flow pumps, preventing leakage is the key to ensuring efficient and safe operation of the pump. Leakage may occur at the connection between the pump body and the motor, the bearing box, the stuffing box and other key parts. Therefore, the choice of sealing technology is particularly important.
In the existing technology, ZLB vertical axial flow pump manufacturers usually use the following sealing technologies to prevent leakage:
Mechanical seal: Mechanical seal is a shaft seal device that relies on rotating and stationary sealing surfaces to fit under the action of spring force and medium pressure, and is equipped with auxiliary seals to prevent leakage. It is suitable for high speed, high temperature, high pressure and highly corrosive media. Mechanical seals have the advantages of low leakage, long life, low power consumption, and easy maintenance.
Packing seal: Packing seal relies on the packing pressed on the shaft or sleeve and the sealing liquid impregnated with the packing to prevent leakage. It has a simple structure and low cost, but is troublesome to maintain, has large leakage, and is not suitable for high speed, high pressure or corrosive media. However, in some specific application scenarios, such as when the medium is relatively clean, the pump speed is not high, and maintenance is easy, packing seals are still a viable option.
Magnetic drive seal: The magnetic drive seal uses magnetic force to transmit torque, transforming the dynamic seal of the pump shaft into a static seal. This sealing method completely eliminates the leakage problems existing in mechanical seals and packing seals, achieving leakage-free operation of the pump. However, the cost of magnetically driven seals is relatively high, and there are certain restrictions on the temperature, pressure and other parameters of the medium.