Stainless steel frame mixer

Stainless steel frame mixerWorking principle and structural characteristics
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 frame mixer can be regarded as a deformation of the paddle mixer, with a relatively sturdy structure and a large amount of animal material to be stirred. If the shape of the bottom of such a mixer is similar to the shape of the lower head of the reaction vessel, it is usually called an anchor mixer. The diameter of the frame mixer is relatively large, usually taking 2/3~9/10 of the inner diameter of the reactor, and 50~70r/min. When used for low viscosity liquids, the ratio of the blade diameter to the tank diameter of the anchor impeller is 0.7-0.9, and for high viscosity liquids it is 0.8-0.95. The speed is usually 10-50 r/min. The gap between the frame mixer and the reactor wall is small, which is conducive to the heat transfer process. When rotating rapidly, the liquid driven by the mixer blades brings the stationary layer down from the reactor wall; When rotating slowly, a mixer with a scraper can generate good heat conduction. This type of mixer is commonly used for heat transfer, crystallization operations, and mixing of high viscosity liquids, high concentration slurries, and settling slurries.

Stainless steel frame mixerThe connection method with 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 are fixed to the mixing shaft 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.