How a small mixer works

The working principle of the small mixer is: a mixing head with multiple interactive mixing blades, the mixing head can be directly placed on the ground for high-speed rotation, and the device can be controlled by hand to move at any angle and distance of 360 degrees, thus realizing Three-dimensional high-speed three-dimensional stirring. The stirring speed of a small mixer is determined by a number of parameters: shaft power (P), blade discharge volume (Q), head (H), blade diameter (D) and stirring speed (N) are descriptions of a mixer five basic parameters. The discharge volume of the blade is proportional to the flow rate of the blade itself, the power of the rotation speed of the blade and the cube of the diameter of the blade. The shaft power consumed by stirring is proportional to the specific gravity of the fluid, the power factor of the blade itself, the cube of the rotational speed and the fifth power of the diameter of the blade. In the case of a certain power and blade form, the blade discharge volume (Q) and the pressure head (H) can be adjusted by changing the matching of the diameter (D) and rotation speed (N) of the blade, that is, the large diameter blade is matched with A mixer at low speed (constant shaft power) produces higher flow action and lower head, while small diameter paddles with high speed produce higher head and lower flow action. During the stirring process, the way to make the micelles collide with each other is to provide a sufficient shear rate. From the perspective of the stirring mechanism, it is precisely because of the existence of the fluid velocity difference that the fluid layers are mixed with each other. Therefore, the fluid shear rate is always involved in the stirring process. Shear stress is the force that is responsible for things like bubble dispersion and droplet breakup in agitation applications. It must be pointed out that the shear rate at each point of the fluid is not consistent throughout the stirring process. The research on the shear rate distribution shows that there are at least four shear rate values ??in a stirring process. Both velocity and average shear rate increase with increasing rotational speed. But when the rotation speed is constant, the relationship between the maximum shear rate and the average shear rate and the blade diameter is related to the pulp type. When the rotational speed is constant, the maximum shear rate of the radial blade increases with the increase of the blade diameter, while the average shear rate has nothing to do with the diameter of the blade.