The variable frequency feeding system for Supplyis to orderly and quantitatively mix various raw materials according to the pre-determined formula and carry out relevant processing to form the required products. Batching production is an important and necessary link in industrial production. The quality of the products produced by batching directly affects whether the subsequent production can operate normally. Currently, batching is achieved through the control of local detection instruments combined with on-site manual monitoring, realizing an automatic and visual batching industrial control system.

The variable frequency feeding system mainly consists of a steady flow feeding screw, a weighing bridge frame, a reduction motor, a weighing sensor, a speed sensor, a weighing control instrument and a material tank system, etc. The weighing bridge frame is of lever type, and its lever support point adopts an ear shaft, which is not affected by corrosion or external factors on the measurement accuracy. The speed sensor is placed at the non-driven end of the helix. It is used for quantitative feeding of bulk materials. The feeding process is continuous feeding by screw rotation, and the weight of the materials conveyed from the user's feeding bin or other feeding equipment is detected. At the same time, the speed detection is carried out by the speed sensor spiral installed at the end. The detected weight signal and speed signal are sent to the weighing controller together for calculus processing and display the instantaneous flow rate in tons per hour and the cumulative quantity in tons.

The batching machine is designed to achieve the functions of motor start/stop, thermal protection and high/low speed conversion. According to the requirements of the batching process, each reaction vessel is equipped with a stirring motor, and the stirring motor also needs to be capable of switching between high and low speed operation modes. This is a high/low speed operation switching switch for the stirring motor (with 2 positions: high speed and low speed). When FSB1 rotates to the low speed position, the contactor KM2 coil is energized (at this time, the contactors KM3 and KM4 coils are de-energized), its normally open contact closes, and the stirring motor Ml operates in a low speed (triangular) mode. When FSB1 rotates to the high-speed position, the wire coils of contactors KM3 and KM4 are energized (at this time, contactor KM2 is de-energized), the corresponding normally open contacts close, and the stirring motor Ml operates in a high-speed (double-star type) mode, respectively controlling the discharge of materials from the reaction vessel.