The Measurement feeding system is a complete set of automation equipment that realizes dynamic weighing and batching control through electrical control management and visualization man-machine software configuration. The electrical control part of the system adopts Siemens PLC, which is programmed and controlled according to the production requirements; the software adopts human-machine configuration, which controls the weight and flow of the materials loaded into the weighing hopper according to the process requirements through the monitoring system and the PLC program, thus realizing the precise measurement and dosage. The weighing system has strong stability and high cost performance, and can provide accurate measurement data and control means for production control and management of various industrial sites.
020-34563445The metering feeding system is suitable for the transportation, metering, and batching of powder and granular materials such as refractory materials, cement, fly ash, and coal powder. A complete set of automated equipment that uses weighing scales, batching carts, and spiral conveyors as material conveying tools, and simultaneously performs dynamic weighing and batching control. The Weighing system can control the weight and flow of materials loaded into the weighing and batching truck through a human-machine configuration monitoring system and PLC program according to the specific production process requirements of the user, thereby achieving accurate measurement and batching. As a fully automated control device for dynamic continuous measurement and batching, the weighing system can also provide accurate measurement data and control methods for production control and management in various industrial sites. The feeding system is an important link to ensure the accuracy and uniformity of dynamic quantitative weighing. In order to coordinate the contradiction between weighing accuracy and weighing speed, a two-stage feeding method is adopted. In order to improve the rate and solve the problem of over tolerance, the weighing mixer adopts a feeding control method of/fast first, then slow, and finally jog 0, aiming to shorten the feeding time and improve the weighing speed by using/fast feeding 0; Adopting/slow feeding 0 to reduce material impact and improve detection accuracy; Finally, add material 0 by tapping to ensure the accuracy of the final quantitative weighing. Due to the time-varying nature of the spiral mixer batching device and the corresponding feeding flow rate, the weighing spiral Feeder always lags behind for a period of time before starting feeding when a feeding signal is issued; When the feeding is stopped, the inertia of the spiral feeding mechanism needs to be delayed for a period of time before it can stop; After the spiral feeding stops, there is still space material in the air that has not yet fallen into the hopper (called the drop, also known as the early shutdown amount), which increases the weighing value. The magnitude of the increase is related to the flow rate before stopping the feeding.
The weighing and Feeding machine adopts a measuring hopper machine, and the material hopper is installed on the support column. The lower part of the material hopper is equipped with a pneumatic disc valve, which is connected to the feeding port of the upper part of the hopper scale through a rubber soft connecting pipe; The measuring hopper machine adopts a hopper scale measuring method, with three Weighing modules evenly distributed around the hopper scale. The carrying end of the weighing module is connected to the outer wall of the hopper scale, and the supporting end of the weighing module is installed on the top of the single screw hopper machine frame. The bottom of the single screw hopper machine frame is connected to the base, and the lower part of the hopper scale is connected to the upper part of the single screw spherical feeding hopper. One side of the lower part of the single screw spherical feeding hopper is connected to the tail end of the single screw feeding hopper, and the front end of the single screw feeding hopper is connected to the drop hopper. The other side of the lower part of the single screw spherical feeding hopper is connected to the shell of the worm gear deceleration motor. There is a single screw for batching in the single screw feeding hopper, and the tail end of the single screw for batching is connected to the output shaft of the worm Connect the upper end of the feeding tube through a rubber flexible hose, The lower end of the discharge pipe is connected to the material inlet of a twin-screw batching machine or a single screw batching machine; The measuring hopper machine is suitable for continuous and accurate measurement of granular or small polymer materials, and stably feeds the materials into the twin-screw batching machine or single screw batching machine for mixing and modification.
Composition of automatic Batching system
1. Feeding section: The feeding section is the part where the material is fed from the silo to the weighing equipment. Different feeding equipment is selected according to the different characteristics of the material, such as electromagnetic vibration feeder, screw feeder, etc.
2. Weighing section: The weighing section consists of sensors, standard connectors, junction boxes, and weighing buckets, which work together with weighing instruments to weigh materials and detect errors.
3. Discharge equipment: Discharge equipment can be weighing equipment (reduction method) or discharge equipment (incremental method, zero position method), usually composed of emptying valves, electromagnetic vibration feeders, spiral feeders, electric (pneumatic) valves, etc.
4. Control system: The batching system consists of weighing instruments, upper industrial control computers, programmable controllers, and other control devices.
5. Calibration system: The sensors of the batching system should be calibrated regularly to ensure the accuracy of the system's batching.
The main functions of the ingredient system
1. Monitoring function: Detect and monitor the instantaneous flow rate, daily total amount, monthly total amount, annual cumulative amount and other parameters during the weighing process of the belt.
2. Screen display: The operating parameters of the control parameters during the ingredient process can be displayed through a computer monitor, as well as real-time ingredient curves and tables.
3. Print management: Ingredient reports can be printed at any time for saving and querying.
4. Communication function: IPC and PLC can exchange bidirectional data and information between instruments.
5. Data processing: The system can automatically process the collected signals and output them to the corresponding control variables.
6. Control function: Automatically control the normal operation of the equipment based on the corresponding set values before operation, including PID regulation.
7. Alarm function: The host alarms for various parameter abnormalities or device status in screen mode and audio-visual signal mode.
