How to choose gear pumps in the asphalt conveying industry

It is crucial to choose a suitable gear pump for transporting asphalt, a fluid with high viscosity, high temperature, and certain corrosiveness, to ensure continuous and reliable operation and avoid pump damage.

The following are the key factors to consider when choosing a gear pump for asphalt transportation:

1. Temperature adaptability

-Asphalt is solid or semi-solid at room temperature and needs to be heated to about 100 ℃ or above to enhance its fluidity. Therefore, gear pumps should be able to withstand high temperatures, usually using built-in heating sleeves or external heating devices,

Maintain asphalt in a suitable flowing state.

2. Material and anti-corrosion

-The parts that come into contact with asphalt, such as pump casings, gears, shaft seals, etc., should be made of corrosion-resistant materials, such as special alloy steel, stainless steel, etc., to prevent corrosion caused by sulfides and other components in asphalt.

3. High viscosity treatment

-Choose a gear pump with wide tooth profile and low-speed operation to reduce the shear force on asphalt and prevent fluid overheating or decomposition; Meanwhile, the wide gap helps to smoothly transport high viscosity substances.

4. Speed regulation

-Support variable frequency speed regulation function to adjust flow and pressure according to actual conditions, improving flexibility and efficiency.

5. Self suction ability

-We strongly recommend having self-priming capability to avoid installing additional vacuum assist systems and simplify the system structure.

6. Easy to clean and maintain

-Consider the convenience of regular cleaning and inspection during design, such as detachable end caps and quick change seals, to reduce maintenance time and costs.

7. Safety protection measures

-Set up functions such as over temperature alarm and emergency stop to prevent accidents and protect the safety of pumps and staff.

8. Reliable sealing

-For high-temperature asphalt, high-performance mechanical seals or packing seals should be selected to prevent leakage and protect the asphalt pump from external pollution.

summary

Choosing a gear pump suitable for transporting asphalt involves multiple considerations. In addition to the above points, a comprehensive analysis should also be conducted based on specific operating conditions.

In practice, it is recommended to collaborate with professional manufacturers to customize solutions based on the specific physical and chemical parameters and operating conditions of asphalt, in order to achieve optimal operational results.

In addition, regular maintenance, monitoring of pump operation, and timely replacement of worn parts are also important links to ensure long-term stable operation.