Demystifying Volumetric Doser Working Principle: Achieving Consistent Dosing

In today’s digital era, precise and consistent material handling is critical for ensuring product quality and production efficiency in industrial processes. Across various industries, volumetric dosers help to achieve this consistency by accurately measuring and dispensing predetermined volumes of bulk solids.

As a manufacturer, you need to understand the volumetric feeder working principle to achieve consistent and accurate material dosing in industrial processes. This article explains the principles and how they contribute to consistent dosing.

Volumetric Dosing Process: A Step-by-Step Breakdown

The volumetric feeder working principle relies on a straightforward concept: capturing a consistent volume of material within the metering unit with each rotation and delivering it to the discharge point. Here’s a breakdown of the process.

For material feeding, bulk material from the hopper flows into the metering unit by gravity or through a feeder mechanism. Meanwhile, for metering unit rotation, the drive system initiates the rotation of the metering unit (screw, vane, or disc) at a predetermined speed.

Due to its geometric design, a specific volume of material becomes trapped within its cavities as the metering unit rotates. The continued rotation carries the captured material towards the discharge point of the metering unit. The material exits the metering unit and is delivered to the downstream process for further processing.

Factors Influencing Volumetric Doser Performance

While the core working principle of volumetric dosers appears straightforward, several factors can influence their performance and dosing accuracy:

Material Bulk Density

Volumetric dosers rely on the principle of consistent volume. However, variations in the material’s bulk density can lead to slight deviations in the actual mass of material dispensed. This is because changes in bulk density affect how much material occupies a given volume.

Material Flowability

The material’s flow characteristics can also impact performance. Materials with poor flowability or those prone to bridging within the metering unit can lead to inconsistencies in the captured volume and ultimately affect dosing accuracy.

System Calibration

Regular calibration of the volumetric doser is essential to account for potential variations in material properties and maintain dosing accuracy over time.

How to Achieving Consistent Dosing with Volumetric Dosers

Despite these considerations, volumetric dosers offer a reliable and cost-effective solution for achieving consistent dosing in various applications. Here are some strategies to maximize their effectiveness:

Selecting the Right Doser Type

Yushine offers various volumetric doser types, including screw feeders, vane feeders, and disc feeders. Choosing the appropriate type based on the specific material properties (flowability, particle size) ensures optimal performance and minimizes the impact of bulk density variations.

Maintaining a Controlled Environment

Fluctuations in temperature and humidity can affect the material’s bulk density. Maintaining a controlled environment around the dosing system minimizes these variations, promoting consistent dosing accuracy.

Implementing Regular Maintenance

Regular maintenance schedules that include cleaning and inspecting the metering unit help prevent potential issues and ensure the smooth operation of the volumetric doser. Thus, regular maintenance should be implemented to maximize the effectiveness of volumetric dosers.

In Conclusion

Manufacturers can leverage volumetric dosers from industries like Yushine to optimize their material handling processes if they understand the volumetric feeder working principle and its advantages for consistent dosing.

Their simplicity, reliability, and cost-effectiveness make them valuable tools for achieving consistent production outcomes across various industries. While volumetric dosing offers consistent volume output, gravimetric feeders might be a better choice for situations demanding extremely high dosing accuracy.



Ida is a fashionista with an eye for detail and a passion for sharing her knowledge. She loves to shop, especially for clothes that make her look and feel amazing. She's always up for trying new trends, and she loves giving advice to others on what looks best on them.

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