Coriolis weighfeeders and belt weighfeeders are continuous weighing and feeding equipment used in industrial processes. There are significant differences between the two in terms of working principles, application fields, accuracy and maintenance requirements. Here is a detailed comparison:
working principle
Coriolis weighing feeder:
The Coriolis force principle is used to determine the material flow rate by measuring changes in material force. The force is proportional to the mass flow rate of the material, and the material flow rate can be accurately calculated.
Belt weighing feeder:
The belt of the belt conveyor is used to carry the material, and the weight of the material is measured by a load cell installed below the belt.
Belt speed is measured by a speed sensor.
By calculating the weight of the material on the belt and the belt speed per unit time, the material flow rate can be obtained.
Application areas
Coriolis weighing feeder:
Commonly used in applications requiring high precision and reliability, such as chemical, pharmaceutical, food and other industries.
Especially suitable for powders and materials with high precision requirements.
Belt weighing feeder:
Commonly used in heavy industries such as mining, metallurgy, cement, and coal.
Suitable for handling large amounts of bulk solid materials, such as ore, coal, sand, etc.
Accuracy
Coriolis weighing feeder:
The accuracy is very high and can reach 0.5% or higher.
It can provide real-time mass flow measurement, which is not affected by factors such as material density.
Belt weighing feeder:
The accuracy is relatively low, generally between 2% and 5%.
Measurement accuracy may be affected by material uniformity, belt tension, environmental conditions, etc.
Maintenance requirements
Coriolis weighing feeder:
Maintenance is relatively low as there are no moving parts to wear out.
Sensors need to be calibrated and checked regularly, but due to their sophisticated design, maintenance is more complex.
Belt weighing feeder:
Maintenance requirements are high, including belt tensioning, calibration, sensor inspection, etc.
Since belts and load cells are wear parts, they may require more frequent replacement and maintenance.
Installation and cost
Coriolis weighing feeder:
The installation is more complicated and usually requires professionals to debug and calibrate.
The cost is higher, but long-term operating costs are likely to be lower given the high accuracy and low maintenance requirements.
Belt weighing feeder:
Installation is relatively simple, but attention needs to be paid to belt alignment and tension adjustment.
Initial investment costs are lower, but long-term operating costs may increase due to higher maintenance requirements.
Summarize
Choosing a Coriolis weighfeeder or a belt weighfeeder depends on factors such as the specific application, required accuracy, material characteristics and budget. Coriolis weighfeeders are suitable for applications requiring high precision and reliability, while belt weighfeeders are suitable for heavy industrial applications that handle large volumes of bulk materials.