

The weighing system is based on a load cell, and through signal amplification and a microprocessor, the weight value is converted into an electrical signal output, which can be used for data processing by a computer. It is suitable for controlling the production process with computerized technology.

The formula, feeding and discharging of the automatic batching machine are all controlled by computer. In addition to the hopper, there are dynamic Weighing modules, precision amplifiers, analog/digital converters, micro-computers, monitors, printers and actuating systems. The touch screen control system can control several reaction tanks and agitators, and can control the time of dry mixing and wet mixing, and can formulate several to dozens of materials, and can simultaneously display the batching process and print the name of each material, quality, total mass, cycle time, formula, daily report, monthly report and so on. Computerized automatic batching production line has large storage capacity of formula, many varieties of batching, high speed, high accuracy, abundant software available, convenient program modification, and is a product with high degree of automation. Through weighing instrument or touch screen, the required weight of various materials is set, and then automatically conveyed to the Batching system by the winch in order for automatic weighing and flow control, so as to realize accurate measurement and batching.
The feeding system control unit adopts intermittent static weighing principle, i.e. each cycle cycle completes the process of feeding, weighing, discharging, mixing and re-feeding. As this measurement adopts intermittent feeding, intermittent discharging intermittent static weighing mode of operation, it overcomes to a certain extent the impact of feeding shock, uneven tare weight and zero drift. According to the different processes, the parameters are set differently, mainly the setting of output and proportioning relationship. When the parameters are set, when the system is running, each scale is dynamically detected to initially determine whether the feeding material reaches the dosing set value. If the dynamic detection reaches the set value, the feeding stops. After stopping the system, it buffers for a certain period of time before starting to weigh. For the feeding error due to dynamic detection and other reasons caused by a single dosage error, through the next dosage supplement or a certain algorithm to achieve such error reduction.
The whole feeding system can be divided into four components, i.e. detection part, data processing part, human-machine interface part and control part. The detection part is mainly to amplify the very low signal from the weighing module through the preamplifier, then take out the interference through the filtering circuit, and then convert the analog signal into digital signal through the analog-to-digital converter to be transmitted to the weighing instrument. The human-computer interface part mainly handles the interaction with the equipment, one is to display the status of the system operation through the display device such as monitor, and the other is to input the parameters of the system operation into the touch screen through the keyboard and other input devices. The control part mainly controls the actuating devices through the driver, in which the motor is used to control the opening and closing of the door when discharging the material, and the electric vibration machine controls the action of discharging the material. The data processing part is the core of the dosage, mainly responsible for coordinating the work of the remaining three parts, and to complete the data processing tasks, and such as the weighing module signals into the corresponding weight information and through the human-computer interface part of the display, according to the current state of the discharging or discharging to control the motor and the vibration machine start and stop, and so on.