(1) Processing capacity
The processing capacity refers to the amount of materials that can be processed per hour. The main factors affecting the processing capacity per unit time are the motion speed of the servo system, the maximum speed of the conveyor belt, and the purity of the raw materials. The servo system has a fast motion speed and can quickly send the actuator to the corresponding position of impurities, which can increase the speed of the conveyor belt and increase processing capacity. Conversely, it is necessary to reduce the speed of the conveyor belt. The processing capacity per unit time is directly proportional to the speed of the conveyor belt, and the faster the conveyor belt speed, the greater the output. The processing capacity per unit time is also related to the proportion of impurities contained in the raw materials. If there are very few impurities, the larger the interval between the two impurities, the longer the reaction time left for the servo system, which can increase the speed of the conveyor belt. The processing capacity per unit time is closely related to the required selection accuracy.
(2) Color selection accuracy
Color selection accuracy refers to the percentage of impurities selected from the raw material to the total amount of impurities contained. The color selection accuracy is mainly related to the movement speed of the conveyor belt and the purity of the raw materials. The slower the movement speed of the conveyor belt, the longer the time between adjacent impurities. The servo system has enough time to remove impurities and improve the color selection accuracy. Similarly, the higher the initial purity of raw materials and the less impurities, the higher the color selection accuracy. At the same time, the accuracy of color selection is also limited by the design of the servo system itself. When there are two or more impurities in the same frame image, only one impurity can be removed, resulting in a decrease in color selection accuracy. The use of a check structure is better than a single selection structure.
(3) Bring out ratio
Takeout ratio refers to the ratio of the amount of impurities in the waste selected by the color sorter to the amount of normal materials. The height of the output ratio can be adjusted, mainly by adjusting the power on time of the actuator to complete the adjustment of the output ratio. If the ratio is set too high, it will affect the two indicators of selection rate and processing capacity; If the setting is too low, the selected waste contains too many normal materials, which will cause waste; If processed again, it will require a certain amount of manpower and material resources, which will cause a lot of trouble and economic losses.
In the actual production process, the processing capacity, color selection accuracy, and strip out ratio are three key indicators that must be considered simultaneously.