The hopper scale realizes the functions of heating, evaporation, cooling and low-speed mixing through the structural design and parameter configuration of the container. The hopper is composed of a frame Electronic scale, a reactor body, a reactor cover, a jacket, a stirrer, a transmission device, an axial sealing device, and supports, etc. When the stirring device has a large height-to-diameter ratio, multiple layers of stirring blades can be used, or it can be arbitrarily selected according to the user's requirements. The outer wall of the reaction tank is equipped with a jacket for external circulation for heat exchange. The hopper support base has support type or ear type supports, and the automatic feeding device under the hopper has an electronic scale. The lower part of the hopper is equipped with an outlet device; the feeding device also includes a temperature measurement device, which is used to measure the temperature inside the weighing reaction tank, and a temperature control device, which is used to compare the temperature measured by the temperature measurement device with the set temperature and control the operation of the outlet device according to the comparison result. Real-time tracking of feeding is carried out according to the reaction temperature inside the batching tank, and the measurement is accurate. The initial value of the material drop difference is determined based on the actual measured value during the measurement process, and it is successively approximated to the target value to make the error smaller. After the Batching system is started, the system PLC automatically controls the sequential opening of each raw material pneumatic valve and weighing feeding valve, and simultaneously starts the feeding motor. The feeding is completed, and the feeding valve and motor are automatically closed, the discharge valve and the stirring motor are opened. The raw materials start to be discharged, the hopper starts to stir, the reaction tank stops stirring, and the system opens the discharge valve and discharge motor of the hopper and the discharge motor of the hopper, and transports the finished product to the finished product tank. This batching process is completed.

The hopper scale scale is installed on the steel support, connected with the screw conveyor by overlapping, and connected with the mixing equipment at the bottom. After batching, the material is discharged to the mixing equipment for the next process, achieving continuous batching in the powder block production process and ensuring the continuity of production. During the operation, the "automatic batching" button is started on the human-machine operation interface, and the screw conveyor starts to work for batching, stops when the set measurement value is reached, then the gate valve is opened to discharge (the gate valve operates when it reaches a certain opening degree and the limit switch works to stop opening), and the gate valve is automatically closed after the material is discharged. The gate valve is opened, the feeding motor starts, and the batching continues until the set quantity is reached, then the valve is opened to discharge to the mixing equipment, and the cycle continues to complete the batching process.

A variable-frequency vibrator is installed on the outer wall of the hopper scale's storage tank to form a new bulk material scale. The mechanical part includes the scale, idler rollers, discharge hopper, base frame, and screw machine, etc. The screw drive provides power for the batching scale, and the speed sensor is directly connected to the end of the drive screw machine shaft to ensure reliable and accurate speed measurement. The scale is the core of the batching scale, and the scale frame and weighing idler rollers bear the load of the material on the screw machine and transmit it to the weighing sensor installed on the scale frame. The scale serves as a force transmission, using high-precision resistance strain sensors. After the sensor is stressed, it converts the force signal into an electrical signal, and each signal is then converted into a single signal by the junction box and finally transmitted to the weighing instrument. The speed sensor uses an optical encoder. When the small shaft of the encoder rotates, the encoder generates a pulse signal, and the screw speed signal is converted into pulse frequency and finally transmitted to the control room instrument. The weighing instrument uses a dedicated weighing controller for quantitative measurement and multi-functionality, which can accept analog signals proportional to the material mass through the screw machine and pulse signals proportional to the screw speed, convert them into flow signals and compare them with the set value, and output control signals.