Bionic blade for stirring non-Newtonian fluid

Abstract

The invention discloses a bionic blade structure for stirring non-Newtonian fluid, which comprises a working surface of a blade body, a back pressure surface, an outer edge, a smooth joint of a blade tail part, a paddle shaft attached to the blade, a blade working surface raised hemisphere structure and a blade tail end wing structure. The non-smooth hemispherical structure of the working face of the blade can effectively reduce the impact resistance of high-viscosity fluid to the surface of the blade, meanwhile, large vortexes generated by incoming flow are cut and guided into countless small vortexes, liquid is fully stirred and separated, the wing structure at the tail end of the blade can reduce the incoming flow resistance, and the blade is more stable. And the wake flow flowing state is effectively improved and guided. After the bionic stirring blade is repeatedly tested and demonstrated through Fluent software, for example, the stirring liquid is a CMC solution with the concentration of 0.85%, the rotating speed of the stirring paddle is 150 rpm, compared with a smooth blade profile without a bionic structure, the average speed of the stirring fluid is increased by 0.005 m / s, the torque is reduced by 0.02 N.m, the stirring effect is improved, and the novel concept of developing the green and environment-friendly industry is met.

Description

[0001] Technical field [0002] The invention relates to the stirring field, in particular to a bionic blade for stirring non-Newtonian fluids. Background technique [0003] Mechanical agitation is used for material blending, mass transfer, mixing, etc. It is often used in food, chemical, construction and other industries. The fluid mixed by agitation is often a non-Newtonian fluid. During the stirring process, due to the special rheological properties of non-Newtonian fluid, and the fluid is generally in a turbulent state, it is very easy to induce the secondary flow in the tank and the large-scale vortex around the impeller, resulting in stable operation of the stirring system The performance is greatly reduced, and the stirring blade will cause fatigue and damage to the blade structure under the condition of long-term use. [0004] With the development of bionic technology and the mixing industry, more and more attention has been paid to the cross-discipline in various fie...

AI Technical Summary

Problems solved by technology

[0003] Mechanical agitation is used for material blending, mass transfer, mixing, etc. It is often used in food, chemical, construction and other industries. The fluid mixed by agitation is often a non-Newtonian fluid. During the stirring process, due to the special rheological properties of non-Newtonian fluid, and the fluid is generally in a turbulent state, it is very easy to induce the secondary flow in the tank and the large-scale vortex around the impeller, resulting in stable operation of the stirring system The stability is greatly reduced, and the agitator will cause fatigue and damage to the blade structure under the condition of long-term use

[0004] With the development of bionic technology and the mixing industry, more and more attention has been paid to the cross-discipline in various fields. Previously, bionic technology was mostly used in the fan and pump industries, but it was not fully developed and applied in the mixing industry. Therefore, a non-Newtonian mixer for mixing is designed Fluid bionic blades are necessary to solve the above problems

Images