Weighing control system in the use of PLC control program, set computer technology, automatic control technology, communication technology as one of the weighing device, according to various production needs, the multi-material automatic batching control production programming, to achieve sequence control and cycle control. The feeding system includes raw material storage, transportation, weighing, dosing, dust removal, mixing and other equipment, involving powder, solid bulk, liquid and other materials. Advanced SIEMENS PLC, industrial weighing computer and PANTHER electronic weighing equipment are adopted. Its main components include power part, weighing part, feeding and discharging part and weighing part, etc. It is a computer crushing Weighing system designed for float material production.

The weighing materials and bagging materials of the Feeder are transmitted by the conveyor belt, the feeding conveyor belt and the production conveyor belt are respectively driven by a motor, and the motor speed is adjusted by the frequency converter to form an automatic double packaging crushing quantitative scale. It is mainly composed of feeding part, weighing part, loading part and conveying part. The feeding part is the finished material transported by the transfer equipment to weigh. Weighing part is the use of double measuring scales to weigh the finished product, by A, B scale oscillator to A scale and B scale hopper scale feed, measure the weight of the material. The loading part is the bagging process that will complete the standard weight of the finished material. The transfer part is to weigh the finished material through the transfer equipment and to transport the bagged material through the conveyor belt. When the transmission equipment will send the finished material, A scale and B scale oscillator swing, oscillator baffle open, when the large feeding weight is reached, the baffle is closed, small vibration feeding, when the predetermined weight is reached, the feeding is stopped, the hopper scale opens, the transition hopper is discharged, and then falls into the bag to complete a packaging cycle.

The crushing quantitative scale adopts non-contact detection control. The contactless detection control device uses differential transformer, photosensitive element and electronic device detection sensor to detect and control the predetermined weighing program of the weighing system and get the corresponding signal. After amplified by the electronic device, the automatic control actuator carries out the weighing work according to the required program. This detection and control device works reliably, with high precision and fast speed.

The hopper scale A1 and B1 of the feeding system choose the reflective photoelectric detection switch, A2 and B2 choose the ordinary photoelectric detection switch, which can fully meet the requirements of the control system. After the modulated pulse generated by the oscillation circuit passes through the reflection circuit, the light pulse is radiated by the luminescent tube GL. When the measured object enters the range of the light receiver, the reflected light pulse enters the photosensitive triode DU; The optical pulse is demodulated into an electrical pulse signal in the receiving loop, amplified by the amplifier and then shaped by synchronous gating, and then the interference is removed by digital integration or RC integration, and finally the output photoelectric switch control signal is triggered by delay (or no delay).