The storage weighing and mixing system is composed of unpacking hoppers, powder tank trucks, bag filters, induced draft fans, etc. The unpacking hopper adopts a double-sided feeding structure, allowing for simultaneous feeding in two directions. The unpacking hopper automatically adds the powder from the powder tank truck to the powder pressure conveying tank. When adding materials, the bag filter can effectively prevent powder from flying and improve the working environment.

The storage system is composed of large storage bins, bag filters, induced draft fans, balance valves, screw feeding devices, storage hoppers, etc. The powder conveyed by the conveying system is sent to different large storage bins for storage according to their models. When conveying powder, the induced draft fan automatically starts and controls the powder to fly through the bag filter. The balance valve automatically opens to balance the pressure inside the large storage bin. The screw feeding device at the bottom of the large storage bin sends the powder to the storage hopper to wait for further conveying to the Weighing system. After the conveying is completed, the balance valve will automatically close. The large storage bin is designed with three material level controls: high, medium and low. When the material level is low, feeding must be done; when it is high, feeding must be stopped.

The conveying system is composed of a gas source, a pressure conveying tank, a distribution valve and a double-pipe conveying pipeline, etc. After the powder is sent to the pressure conveying tank through the unpacking hopper, compressed air is sent into the tank to blow up the powder, keeping it in a floating state. When the pressure inside the pressure conveying tank reaches a certain value, maintain the pressure for 2 to 3 minutes, then open the discharge valve and the compressed air valve on the conveying pipeline at the same time. Under the action of compressed air, the powder is conveyed along the conveying pipeline to the storage tank. To ensure a constant conveying pressure, compressed air of the same pressure is replenished into the conveying pipeline at certain intervals on the conveying pipeline, which can guarantee the conveying speed. The conveying pipeline is of a double-pipe structure. The inner pipe is made of flexible rubber material, which can resist powder erosion and reduce the breakage rate of powder particles during high-speed conveying. The outer pipe is made of hard aluminum alloy material and can withstand certain pressure.

The weighing system is composed of a daily storage hopper, bag filter, balance valve, feeding screw, central bag filter, recovery screw, powder Electronic scale, powder verification scale and discharge branch channel, etc. The powder is conveyed to the daily storage hopper through the conveying system to wait for weighing. When the weighing and feeding start, the feeding valve at the bottom of the daily storage hopper opens, and the feeding screw moves, conveying the powder to the powder hopper scale. (When conveying the powder, the central bag filter adsorbs the flying powder onto the filter bag of the bag filter to prevent the powder from flying and causing pollution.) After the powder weighing is completed, the disc valve of the powder hopper scale opens, and the powder is discharged onto the powder verification scale through the feeding pipe to verify the accuracy of the weighing. After the verification is completed, the discharge valve of the powder verification scale opens, and the powder is sent to the batching warehouse of the batching machine through the pipeline and the discharge branch. The interior of the storage hopper is sprayed with anti-sticking and anti-corrosion chemical raw material paint, which not only ensures smooth powder discharge and prevents the powder from adhering to the inner wall, but also effectively prevents the powder from corroding the storage hopper, thereby extending the service life of the storage hopper.