About

      In January 2024, the service engineer of Greatwall Mixers traveled to an overseas location to on-site supervision services for agitator in macromolecular material project. The key equipment is reactors.

      In the design phase of this project, our technical team developed a solution based on the customer's process requirements, taking into account on-site conditions and the characteristics of the medium, including viscosity, density, and other parameters. Through multiple rounds of calculations and Computational Fluid Dynamics (CFD) simulations, the final design for the current batch of reactor focused on the pedestal. To meet the customer's requirement for maintenance and replacement of mechanical seals in the agitator without the need to disassemble the reducer and motor, the SDJ series lifting pedestal was utilized.

      This series pedestal incorporates a shaft sleeve structure for the transmission shaft and bearings, and the bearing seat and the frame body adopt a modular structure, making disassembly more convenient, especially when there is no need to dismantle the gearbox and motor.

     At the same time, based on the mixing objectives, a combination of double-folded paddle-type impellers and a special anchor-type agitator was employed, comprising a total of four layers of agitators. The upper three layers consist of detachable double-folded paddle-type agitators (CCJ series impeller), featuring a two-blade design with characteristics similar to multi-stage counterflow agitators. These agitators facilitate the formation of significant axial circulation during operation, reducing mixing time. The bottom layer consists of a special anchor-type agitator (FMS series impeller), designed for slow-speed mixing suitable for processes involving medium to high viscosity liquids, heat transfer reactions, and more.

     Technical advantages: This combination of impellers adopts a large impeller diameter and low-speed configuration. The special anchor-type agitator at the bottom generates a substantial displacement at low liquid levels, preventing material accumulation and dead zones at the bottom. Simultaneously, in conjunction with the upper three layers of detachable double-folded paddle-type agitators, a stable axial flow field is established in the tank, ensuring uniform mixing of materials. This combination of impellers is suitable for mixing under laminar and transitional flow conditions, as well as for complex processes involving solid-liquid suspension and heat transfer.

     Through the continuous optimization and innovation of this series of technologies, we have provided customers with a more efficient and reliable mixing solution, contributing significantly to the further development of the polymer materials industry. We firmly believe that this carefully designed mixing system will bring significant benefits to the successful implementation of the project and future production operations. It not only enhances production efficiency but also establishes new standards for industry benchmarks.