How does the installation of components affect the actual accuracy of the quantitative feeder?

A quantitative feeder is a device that continuously measures and controls the feed rate. Its main function is to ensure that the actual feed weight matches the set feed weight, continuously conveying bulk materials at a constant rate, and achieving automatic measurement, weighing, quantitative feeding, and accumulation functions.

Due to its continuous measurement and feeding, the quantitative feeder significantly improves production efficiency and quality. It is widely used in cement, building materials, metallurgy, mining, grain, and other industries. Ensuring accuracy and stability is essential to meet the precision requirements of the quantitative feeder and improve production efficiency and product quality.

Apart from the feeder's performance, the correctness of its installation also plays a crucial role in ensuring its accuracy and stability. The installation position and method of each component of the quantitative feeder affect its actual accuracy. Guonuo Technology analyzes the factors that influence the quantitative feeder during the installation of each component:

1.Installation of Weighing Platform Rollers:

The material load on the weighing platform acts on the weighing sensors through the weighing rollers. The instrument calculates the instantaneous flow rate based on the weighing signals and also considers the length of the weighing platform. If the actual installation position of the weighing rollers deviates from the feeder's design dimensions, it will cause a discrepancy between the actual length of the weighing platform and the design value. This leads to deviations between the unit length belt scale load value calculated using the design value and the actual material weight, resulting in feeding deviations.

2.Installation of Weighing Sensors:

For quantitative feeders using cantilever sensors, there are pivots and weighing sensors, with rollers installed between them. The weighing sensors should be installed at the designed distance from the pivots. Even a slight deviation in the sensor's installation position from the design value can affect the measurement results.

3.Automatic Tensioning and Alignment Device:

The automatic tensioning and alignment device prevents belt misalignment, automatically adjusts tension, and ensures constant belt tension. This stabilizes the belt's tare weight, ensuring the stability of the quantitative feeder's accuracy. Improper installation of the automatic tensioning device prevents it from functioning correctly, leading to belt misalignment, constant changes in belt tension, and variations in the feeder's tare weight, compromising the accuracy of material measurement.

4.Installation of Speed Sensors:

The instantaneous flow rate of the quantitative feeder is calculated by multiplying the belt load value by the speed value, requiring accurate belt speed measurement. If the speed sensor is installed too far from the inductor, it may fail to detect it, resulting in lost pulses and a reduced pulse frequency detected by the instrument, affecting accuracy and leading to lower measurement results. If the speed sensor is too close to the inductor, it may collide with the motor during operation, causing damage to the components. 

5.Installation of Material Retaining Plates:

Material retaining plates are installed above the belt to prevent material spillage, avoiding material waste and preventing material from jamming components and affecting equipment operation. After installing the retaining plates, if they contact the weighing belt too tightly, friction will occur, affecting the feeder's tare weight and, consequently, the weighing results. If the gap between the retaining plate and the belt is too large, material may get trapped, also affecting the weighing results.

Quantitative feeders are typically used in harsh production environments and require long-term high accuracy and reliability. This relies not only on the quality and performance of the feeder's components but also on the installation of the feeding components, including their position and method, to minimize errors and achieve the desired accuracy as closely as possible.