The pulse metering feeding system is a combination of Weighing modules, weighing instruments, and control systems. A system for controlling the weighing and measuring of reaction tanks. The weighing and control system mainly consists of multiple weighing modules, multi-channel junction boxes (including amplifiers), weighing instruments, and output multi range control signals. This system can be applied to various box weighing, canned liquids, solid weighing, dry powder mixers, mortar batching mixers, liquid batching tanks, etc. Users can directly access PLC systems and terminal control systems to achieve multi pass control and automation control. The weighing tank includes a tank body and a base. The tank body includes a feeding pipeline and a discharging pipeline, including an Electronic scale. The electronic scale also includes four weighing modules, an A/D conversion circuit, a microcontroller, and a reaction kettle. The four weighing modules are distributed below the four corners of the base, and the feeding and discharging pipelines are connected to the tank body through a flexible hose. The material tank and the total weight of the materials are displayed on the reaction kettle of the electronic scale at any time. By calculating the weight difference, the feeding or discharging amount of the materials in the tank can be accurately and timely determined. The feeding pipeline and the discharging pipeline are connected to the tank body through a flexible hose, avoiding errors caused by the fixed connection between the feeding pipe and the tank in the weighing results, and ensuring more accurate weighing.

The weighing reaction kettle adopts a tank body, weighing module, display unit, and information transmission unit; There are multiple legs at the bottom of the tank, and each leg is equipped with a weighing module at the bottom. All weighing modules are connected to the display unit and information transmission unit; Each weighing module is equipped with a leveling device. The leveling device of the weighing reaction kettle includes a pressure plate support column, a gasket, and a bearing plate; The pressure plate is connected to the bottom of the frame foot, and is connected to the weighing module through a support column. One end of the frame support column is threaded to the weighing module, and the bearing plate is located below the weighing module. The gasket is located between the bearing plate and the weighing module, and the gasket is located at the other end of the weighing module. The weighing storage tank is equipped with high and low level switches, which respectively detect and control the high and low levels of the tank. When the high level is reached, the inlet electric ball valve 1 closes the inlet action; When the low liquid level is reached, issue a warning and stop heating. The lower tank adopts a low-level switch and weighing module to automatically control the liquid level. When the weighing module detects the lower limit of the set value, it automatically opens the middle electric ball valve to discharge the preheated medium from the upper tank to the lower tank; When the weighing module detects the upper limit of the set value, close the electric ball valve; In addition, a low-level float switch is installed in the lower bucket. When the liquid in the lower bucket is transported to the low level, the system will turn off the heating, stop the metering pump, and issue an alarm.

The design of the feeding system adopts HMI+PLC system, integrating multiple sensors and actuators into a powerful weighing and Batching system, which can be applied to various chemical operation units that require precise control and quantitative dosing. All equipment of the weighing device is centrally installed on a steel base, and the entire set of equipment includes a weighing and Measuring system, a heating and insulation system, a liquid Feeder, and an automatic control system. The measuring system consists of a weighing module, weighing platform, level adjuster, and accessories. It consists of a dosing pump, safety valve, back pressure valve, pulse damper, pressure gauge, ball valve, pipeline mixer, pipeline and accessories. The automatic control system consists of industrial pH meters, contactors, and control circuits, responsible for operating various electrical equipment. The control method is PLC+HMI fully automatic control. The signals collected by the sensors are transmitted to the PLC by the instrument transmitter. After being processed by the PLC program, the dosing system is automatically controlled and relevant parameters are displayed on the HMI interface.