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1.1 The main advantage of the turbine stirrer is that when the energy consumption is not large, the stirring efficiency is high, and the stirring produces a large radial flow. 1.2 Turbine paddles can produce a large shear force and make finely dispersed fluid microclusters. 1.3 They are suitable for mixing, liquid-liquid dispersion, and liquid-solid suspension of low-viscosity to medium-viscosity fluids, as well as to promote good heat transfer, mass transfer, and chemical reaction. |
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| Name | Flow | Advantages | Application | |||||
| Straight Blade Open Turbine Paddle | Radial flow | 1) Wide range of rotational speed and viscosity, high shear force, and turbulent diffusion ability. 2) It forms a good mixing of the upper and lower liquid layers of the slurry. 3) It can form a large convection circulation in the vessel with the baffle. 4) Good circulating and shear ability. |
It is especially suitable for shear dispersion operations. it is also used for general solid dissolution, reaction, heat transfer, emulsification, crystallization, and solid suspension operation. |
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| Inclined blade open turbine Paddle | Radial flow | 1)Good convection circulation ability and certain turbulent diffusion ability. 2)The structure with a stabilizing piece is an improved form of this type of paddle, mainly applied in the vicinity of the critical point of the shaft design, the shaft needs radial corrective action. |
It is suitable for application in mixing, dispersion, particle crystallization, reaction, dissolution, solid-liquid suspension, heat transfer, and other operations. | |
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| Curved blade open turbine paddle | Radial flow | The curved blade open turbine has almost all the characteristics of the flat blade turbine mixer, and because of its special backward-curved structure, the discharge performance is better, and the paddle is not easily worn out. | It is especially for the solid-liquid suspension operation when it has a lot of solid content. It is usually used with baffles and is also suitable for general reactions, heat transfer, emulsification, and other operations. |
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| Straight-blade cone-bottom type paddle | Radial flow |
It is the same as straight blades open turbine paddle. | It is suitable for the lowest level of conical vessel stirring and can be applied to general reactions, dissolution, suspension, heat transfer, emulsification, crystallization, and other operations. | |
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| Sweepback paddle | Radial flow |
The Sweepback paddle with finger baffle can generate a large flow rate of up and down circulation flow, as well as a good shear result. | It is suitable to be applied in heat transfer, mass transfer, solids dissolution, suspension, and so on. | |
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| Brumagin type paddle | Radial flow |
The front end of the paddle with a swept back angle of a large wide-blade paddle, exclusion of performance is better than the straight and curved blades to open the turbine, low power consumption, low shear, with a baffle, convection can be generated by the circulation and turbulence of diffusion | Suitable for heat transfer, mass transfer, mixing, and dissolution of fibrous materials. | |
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| Name | Flow | Advantages | Application | |||||
| Radial flow | It produces very high shear force and strong dispersing ability. Circulation ability is good, generally in the disc above and below the formation of two circulating flows, because of the role of the disc, which can make the gas dispersion smoother and uniform. | It is especially suitable for gas dispersion and absorption operation, and also suitable for solid suspension, heat transfer, and non-homogeneous reaction operation. | |
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| Straight Blade Disc Turbine Paddle | ||||||||
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| Curved blade disc Turbine Paddle | Radial flow | Curved blade disc turbine agitator is the same as a straight blade disc turbine agitator, the backward curved paddle has a larger swept back angle, good discharge performance, and low power consumption, the paddle is not easy to wear. | It is suitable for gas dispersion, absorption, and solid-liquid suspension operation. | |
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| Inclined Blade Disc Turbine Paddle | Radial flow | Inclined-blade disc turbine mixer paddles have a tilt angle, there is a certain axial flow, good circulation performance, shear force is lower than the straight-blade disc turbine mixer, pitch-blade disc turbine paddles have a larger angle of retreat, discharge performance is good, power consumption is low. | It is especially suitable for non-homogeneous phase mixing, and dispersion, but is also used for general emulsification, heat transfer, and other operations. | |
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| Half-pipe and parabolic disk turbine paddle | Radial flow | Half-pipe and parabolic disc turbine agitators are radial flow type agitators, their blades are concave arc and parabolic surface respectively. With strong radial displacement and dispersing ability, under the same power, its mass transfer coefficient is more than 30% higher than that of flat and straight-bladed disc turbine agitators, and the power consumption is lower than that of it. | It is especially suitable for the dissolved oxygen operation of similar fermentation processes, and also suitable for gas dispersing, absorbing, mixing, mass transferring, and other operations under the other requirements. | |
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| Arrow-blade disc turbine paddle | Radial flow |
Arrow-blade disc turbine stirrer is also a radial flow agitator, but its paddle section profile for the parabolic plane, and thus the axial direction of the upper and lower two streams of slanting circulating flow, the power consumption is low, and has a high shear force | It is suitable for gas dispersion, absorption, mass transfer, mixing, solid-liquid suspension, and other operations. | |
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