Weighing and dosing system adds a certain amount of raw material from raw material tank to continuous mixing tank, according to different requirements of dye color, a certain amount of pigment (containing blue, red and yellow primary colors) from three reaction tanks is sent to continuous mixing tank, and then stirred for a certain period of time at a certain stirring speed in continuous mixing kettle and discharged through pipeline according to different dosing ranges. By calling the corresponding unit in the controller, the final realization of the material batch production. The process functions of mixing, resting and layering, and product discharge are realized by the mixing and discharge, and the related data in the units shown in dotted lines.

The Loop dosing system automatically adjusts the wind speed, circulating liquid flow rate and inlet liquid temperature according to the set operation parameters, collects the parameters of inlet and outlet liquid temperature, wind speed, atmospheric pressure, circulating liquid flow rate, wind resistance and liquid resistance, and sends them to the upper computer. The upper computer reads the data sent by each on-site measurement and control unit and calculates the liquid-side heat dissipation and air-side heat absorption according to the corresponding formulas specified in the standard. Usually chemical and physical changes occur in the dosage process, which can be composed of a number of simple tasks for the control of weighing. The process unit includes all production operations and auxiliary operations in batch production, which are processed in accordance with the order and operating parameters specified in the formula, guaranteeing the control of the dosage process without changes in quality.

The positive pressure batching system mainly uses pneumatic conveying to transfer powder materials from one place to another. Depending on the direction and force of the airflow, in the positive pressure conveying system, compressed air or other gases (generated by specific air supply equipment such as blowers or compressors) are introduced into the storage bins or containers containing the powder materials. These gases are then mixed with the powder materials under pressure, and under the pressure-driven force, they are transported through the ash conveying pipes to the designated location.

Load Batching scales in order to control personnel directly and accurately weighing data of raw materials, the production process can not be a small amount, lack of material, loss of material. To realize the manual or automatic to select the bin number location, the bottom line of the various dosage inventory for automatic alarms and other functions, the digital display of the electronic scales and the PLC and touch screen for information exchange, all system control will be brought together in a special system software, the controller only need to click on the appropriate location to control such as electrical switches, rotating transport components, water, gas valves, etc., the human-machine interface is very good! The human-machine interface is a good way to display the whole production line in the form of dynamic and static diagrams on the computer screen, so that the staff can understand the operation of the whole production of ingredients without leaving home.

The Cleanliness-free dosage scale is made by controlling the related switches, and the human-computer interface is the process of controlling, all the operations are done on the computer software, and any clicks can directly act on the pneumatic valves, prozac uses an electrical control integrating analog and switching quantities, and it completes the corresponding operation according to the requirements of the staff on duty. The PLC output current signal controls the output frequency of the frequency converter, which ultimately regulates the motor speed, thus controlling all the production processes related to the motor.

The Quantitative dosage scale utilizes the analog input template in the PLC to collect the data on site in real time. The actual values are calculated according to the different ranges of the flow rate of each weighing module's measuring tank, and the converted values are averaged to minimize the flow rate fluctuations, which facilitates the application of the weighing values to the PID circuit adjustment and ensures the stability of the weighing adjustment. The display of material level adopts the display mode of one way on site and one way in the main control room, which facilitates the real-time monitoring of the material level of the silo from two aspects, and ensures that when the material level is low, the on-site personnel will take the measure of adding material to prevent the occurrence of material breakage.

The Spiral weighing scale acts linearly on the weighing module through the weighing frame, and the velocity sensor measures the speed of spiral operation. The instantaneous flow rate of the material can be measured after calculation. The instantaneous flow rate and cumulative flow rate are displayed after calculation, and the instantaneous flow is sent to the computer system as an input signal with 4~20mA analog current signal at the same time. After comparing the signal with the set value, the computer outputs 4~20mA analog current signal to control the speed of the feeding motor through the inverter, which realizes the closed-loop control of the material discharge flow.

The Tracing back automatic batching scale is used to feed different raw materials into the respective hopper in the feeding equipment, then feed into the weighing hopper according to the given ratio of the formula, and weigh, and then feed into the mixing machine for a certain period of time for mixing, and evenly mixed into finished products. Various fixed formulas are inputted into the computer beforehand, and the computer controls the discharging, weighing and mixing according to the proportion of the formulas, and detects the signals of the weighing module in real time, makes a judgment, and sends out the commands to each actuator of the dosage, so as to realize the automation of the dosage. The whole production system is equipped with a manual control auxiliary mechanism, which can control the operation according to the automatic or manual working mode.

Proportioning scale and Mix feeding scale use proportional integral differential (PID) control algorithm in the control system. The control system with PLC as the core, continuous control of multiple control loops, using frequency converter to control the speed of the spiral feeder motor, incremental PID control algorithm. The whole production process of mixing is mainly divided into loading section, dosing section, mixing section and storage section.