The positive pressure weighing mixer adopts a dynamic measurement accuracy control mode. The effective signals for fast feeding and slow feeding start the material pump to begin the rapid feeding process (i.e., opening two feeding valves simultaneously). The signals from the weighing sensor are tracked and read. When the weight approaches the preset maximum feeding value, the fast feeding signal will be closed, allowing the system to enter the slow feeding process (closing one valve). At the same time, the instrument tracks and reads the signal from the weighing sensor. The instrument will determine whether the weight of the hopper is greater than or equal to the material target value and the material drop value. If it is greater than or equal to, the instrument will turn off the small input signal and stop the feeding process (all valves and feeding motors will be closed), and this measurement is completed.

The weighing mixer is a new material obtained by mixing different types of powdered substances together in different weight ratios. The weighing mixer has three layers of batching hoppers. The lower layer consists of four unloading hoppers measured by weight, the middle layer has four batching hoppers, and the upper layer has two feeding hoppers. The materials are respectively placed from the upper and middle hoppers into four preset weight discharge hoppers to store four different types of materials. Then, they are simultaneously discharged onto the discharge screw to obtain mixed powder materials of different specific grills, thus completing the entire batching process. The electrical control system is divided into feeding, batching and unloading systems, and is available in two working modes: manual control or adjustment and fully automatic control. System working process: (1) Mixing machine working process: When the weighing module detects that the material hopper is short of material, the feeding screw motor starts and runs. After a delay to the set time, the feeding vibrator and the feeding motor start and run. All working motors stop only when the weighing module detects that the material hopper is full. (2) Working process of the batching and unloading system: When the load cell detects that the transfer vehicle is in place and determines whether the measurement of the hopper scale has reached the set value, unloading can be carried out. If the measurement of the hopper scale has not reached the set value, the batching and feeding motor starts, the feeding valve opens, the batching vibrator starts, and the feeding hopper scale feeds materials until the set value is reached before entering the unloading process. If the measurement of the hopper scale has reached the set value, Then it directly enters the unloading work process. Each working process has a set delay time. If it is a fully automatic control working mode, the mixing machine process works first, followed by the batching and unloading system processes.