The unloading system is spirally transported to the blanking port through the impeller, and a weighing device (composed of weighing lever, supporting reed, weighing sensor, etc.) is installed under the screw conveyor to detect the weight of the material and generate a voltage signal proportional to the load of the weighing lever to the dynamic weighing instrument. Meanwhile, the speed sensor installed at the tail of the screw conveyor inputs the speed signal of the conveyor spindle. A voltage signal proportional to the load of the weighing lever is generated and fed into the dynamic weighing instrument.
020-34563445After the solid material is broken and screened, the materials with different sizes and various strengths are stored in different storage silos, and the materials with different strengths and different properties are mixed in a certain proportion. The whole production process is realized by automatic control, the raw materials are stored in the storage bin, the amount of material is controlled by the electric vibration Feeder, and the material is respectively lowered into three distribution silos. PLC input the template through the analog quantity, real-time sampling monitoring control of the material distribution bin, under the distribution bin, the use of frequency control transmission, responsible for the three distribution silos configured raw materials automatically transported to the empty tank waiting for mixing, PLC control the time and automatic feeding, after the dosing, the material will be automatically transported to the centralized management bin.
Automatic batching algorithm is designed by VB language, through the computer data transmission to the batching software, the production operator input on the computer production product type, the technical parameters of various ingredients and the total weight of the material, the computer can automatically calculate the ratio of weight of various materials, and automatically download to the PLC as the basis for weighing control. The operator can also manually input and/or adjust the ratio of various materials on the computer. The modification of ingredients and total weight shall be effective only after the completion of the batching process, and the modification made during the batching process shall not affect the ratio of the batching.
The start and stop of automatic batching technology is operated by the operator on the upper computer, and the PLC automatically controls the feeding amount of the electric vibration feeder according to the ratio output by the upper computer, and the feeding sequence of various materials should follow the process from large to small according to the proportion. The overimpulse of the batching process is automatically dynamically adjusted according to the difference between the given value and the actual value, which ensures the accuracy of the batching to the maximum extent. Vibration feeding weighing technology adopts two-step vibration material, both fast vibration material 90%, slow vibration material 10%. The whole batching process of vibrating material is controlled by microcomputer, and the vibration value compensation is carried out according to the difference between the final value of the last vibrating material and the set value. According to the characteristics of the repeated support of a material, the past weighing error data can be used to compensate the estimation of the future space material amount, and the error can be kept in the minimum range.
