The influence of process and equipment selection on batching accuracy

1. Concept of batching accuracy

Batching accuracy is to control the error of the automatic batching system within a certain range. Batching accuracy is divided into static accuracy and dynamic accuracy. Static accuracy refers to the error value between the actual batching amount and the designed batching amount in a static state (i.e. after batching is completed). Dynamic accuracy refers to the error value between the actual batching amount and the designed batching amount in a dynamic state (i.e. during batching).

2. The influence of process and equipment selection on batching accuracy

In the batching system, the main factors affecting batching accuracy include the accuracy of the batching auger, the accuracy of the batching scale, the accuracy of the weighing instrument, the resolution of the sensor, the program running speed, the signal feedback speed, the warehouse machine model, the inverter control parameters, etc. Among them, the accuracy of the batching scale is generally determined by the following factors:

3.2.1 Design of the shape of the scale bucket: the circle instead of the square is to reduce the residue in the scale

3.2.2 Installation of the scale bucket and sensor: balance and symmetry are required

3.2.3 Installation and adjustment of the sensor: balanced force

3.2.4 Sensor quality

3.2.5 Sensor to prevent interference

3.2.6 Design of the raw material inlet

The selection of these equipment and the determination of parameters are determined by the product structure, formula composition and raw material use. For example, when selecting a warehouse discharging machine (equipment), factors such as raw material characteristics (density, volume, flow performance, etc.) and addition amount should be fully considered; when setting the parameters of the batching host, the various characteristics and addition amount of the raw materials should also be fully considered, and the batching accuracy should be maintained during the dynamic adjustment process.

In addition, process design and equipment operation status are also factors that affect batching accuracy. For example, the return air duct installed on the mixer will greatly reduce the impact of air fluctuations on the electronic scale during the batching process. Maintaining the permeability of the air holes on the electronic scale will reduce the negative air pressure in the electronic scale during the batching process, which is conducive to accurately reflecting the actual batching weight.

Note: The article comes from the Internet. If there is any infringement, please contact us to delete it. Thank you.