Frame mixerThe working principle and structural characteristics of

The diameter of the frame stirrer is relatively large, usually taking 2/3-9/10 of the inner diameter of the reactor, and 50-70r/min. The gap between the frame stirrer and the reactor wall is small, which is conducive to the heat transfer process. When rotating rapidly, the liquid driven by the stirrer blades brings the stationary layer down from the reactor wall; When rotating slowly, a stirrer with a scraper can generate good heat conduction.

The connection method between the frame mixer and the mixing shaft is similar to that of a paddle type, that is, one end of the impeller connected to the mixing shaft is made into a semi-circular collar, and then the two semi-circular rings of the two sides of the blades are clamped on the mixing shaft with bolts, while the blades and the mixing shaft are fixed with through shaft bolts. Due to the large external dimensions of the impeller, most of the blades are connected by bolts for ease of assembly and disassembly. The impeller is mostly made of flat steel and angle steel. In order to improve the strength of the impeller, reinforced steel plates can also be used.

The mixing shaft is connected to the crossbars and vertical bars through assembly or welding. When the mixing shaft is driven to rotate by a reduction motor, the animal material flows horizontally in a circular direction at different heights. The crossbars and vertical bars effectively divide the material, achieving the process effect of forced mixing and dispersion.