Promote the ability of the impeller is characterized by the discharge of liquid ability is strong, and higher requirements do not apply to various scattered remnant response operations such as shear force. It is mainly used for mixing, liquid-liquid system makes temperature homogenization, solid liquid at low concentrations in the settlement of slurry, etc. Especially it has a unit of power capacity and mechanical agitator itself the advantages of low cost, thus is often used for large capacity of stirring, the use of the typical examples for the side into the installed on hundreds of cubic meters of crude oil and refined oil storage tank on the side wall.

    Propeller mixer is the most typical axial manifold mixer, liquid discharge amount is high, low shear performance, fluid is from the axial into the mixer blade, and then from the axial flow out of a liquid flow mode. Axial flow of the mixed fluid motion direction is parallel to the axis of the mixing and in running direction hit the tank wall or the bottom of the tank, the formation of the upper and lower circulation flow, axial flow exist at the same time, combined with different baffle can realize more complex mixing effect.
    The propeller blade is not made of a three-dimensional curved surface, unlike the propeller, which is usually made of steel. The pushing type impeller rotates the liquid forward to discharge the axial flow, so that the cycle is formed in the tank. However, if the installation in unbaffled cylindrical stirred tank of the center, in the impeller rotating at the same time, tank of liquid is rotated, and axial flow compared to, or horizontal rotary flow occupies the main position, the mixing effect is weakened. This is because of the axial circular flow is the real motive force of promoting macro mixing. In order to prevent the horizontal rotating flow, the baffle can be installed in the tank, and the stirring shaft can be eccentric or inclined to be installed. If the pushing type impeller is matched with the guide tube, the regular axial flow can be obtained. The use of baffle and the impeller tilt or eccentric installation will make the impeller discharge flow is limited, increase the shear effect, so the propeller is still a considerable part of the energy distribution to the shear effect. Use of baffles or draft tube is cyclic axial stronger, discharge performance improved significantly, because it cycle ability, low power consumption, in the low viscosity, large capacity homogeneous, mixing process used to reflect its advantage, in the low viscosity liquid heat transfer and reaction, solid-liquid ratio hours of suspended and dissolved in the process is widely used.