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Semicircular Blade Smiths Disc Turbine for Agitator
The Semicircular Blade Smith Disc Turbine LESBSDTA is a radial flow impeller for stirred pressure reactors. Six half-pipe shaped blades are fixed to a flat disc on the agitator shaft. The blade form was developed to limit the drop in impeller power draw that occurs under gassed conditions, so the impeller keeps dispersing gas when gas is fed into the liquid. It is applied to high shear mixing and to medium and high duty gas dispersion, and gives good contacting in liquid-liquid and gas-liquid systems.
How it works
The disc turbine discharges liquid radially from the blade tips toward the vessel wall. The half-pipe blade profile handles gas at a lower energy cost than a plain blade. In the selection table for this impeller group, disc turbines are placed at 100 to 350 r/min for low and medium viscosity liquids, with strong shear, gas dispersion, medium speed operation and a higher energy consumption than propellers.
Impeller diameter runs from 30 to 2000 mm and shaft diameter from 10 to 200 mm. Blade count is 6, 8 or 10. Materials are carbon steel, SS304, SS316, titanium, nickel, Hastelloy B/C, Monel, zirconium, Inconel and tantalum. The reference pairing of impeller diameter to shaft diameter is given below.
Impeller Dj (mm) Shaft d (mm) 150 30 200 30 250 40 300 40 400 50 500 65 600 65 700 80 800 90 900 100 What is included
- Disc turbine impeller with the specified blade count, in the specified material
- Hub sized to the stated shaft diameter
Specify for your project
- Impeller diameter, 30 to 2000 mm
- Shaft diameter, 10 to 200 mm, or the reactor model the impeller must fit
- Blade count: 6, 8 or 10
- Material of construction from the list above
- Duty: gas dispersion or liquid-liquid contacting, liquid viscosity and intended mixing speed
This description defines the product family. Guaranteed performance, included hardware, exclusions, interfaces and acceptance criteria are stated only in the project-specific technical proposal and approved datasheet.
Technical Requirements
- Diameter of impeller: 30~2000 mm
- Diameter of shaft: 10~200 mm
- QTY of blade: 6, 8, 10
- Available material：CS, SS304, SS316, Titanium, Nickel, Hastelloy B/C, Monel, Zirconium, Inconel, Tantalum
Impeller Dj(mm) Shaft d(mm)
150 30 200 30 250 40 300 40 400 50 500 65 600 65 700 80 800 90 900 100 Quick Selection
Type Mixing speed Application Feature Marine propeller
Broad blade Propeller
100-500r/min Low viscosity Low shear, low energy consumption
Strong circulation
High-speed operation
Paddle type
- Straight blade
- Pitched blade
- Curved blade
50-200r/min Medium viscosity Close to the tank wall
Heavy duty, slow operation
High energy consumption
Inefficient mixing
Turbine type
- Straight blade
- Pitched blade
- Curved blade
50-350 r/min Low viscosity
Medium viscosity
Medium shear and cyclic
Medium speed operation
Suitable for medium equipment
Disk turbine (Flat blade, pinched blade,
curved blade, )
100-350 r/min Low viscosity
Medium viscosity
Strong shear, gas dispersion
Medium speed operation
High energy consumption
Frame type
Anchor type
Helical Blade
20-150 r/min High viscosity Low shear and speed
Strong cycle ability
High energy consumption
Self inducing type
200-500 r/min Liquid-gas mixing
Strong self-inducing capacity
High gas consumption
High speed operation
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