Main features and most common uses of stirring shafts for stirrers type:
ES, BS, PW, DLS, LH-DLH
 

 
11.1304 Stirring shaft with floating blades code A00001304
Features:
The two blades open when speed increases giving raise to an axial flow in the vessel from top to bottom. Particularly useful for stirring in narrow neck containers, e.g. flasks.
Uses: Stirring at medium to high speed of high solids, flocculation, mixing the thickening agents, sludges, etc.
11.1305 Stirring shaft with folding blade code A00001305
Features:
The blade falls into line automatically during rotation and gives raise to an axial flow in the vessel from top to bottom. Particularly useful for stirring in narrow neck containers.
Uses: Stirring at medium to high speed of high solids, flocculation, mixing of thickening agents, sludges, etc.
11.1306 Stirring shaft with fixed blade code A00001306
Features:
Produces an axial flow in the vessel from top to bottom.
Uses: Stirring at medium to high speed of high solids, flocculation, mixing of thickening agents, sludges, etc.
11.1307 Stirring shaft with propeller code A00001307
Features:
Standard stirring shaft. Produces an axial flow in the vessel from bottom to top with local shearing.
Uses: Stirring at medium to high speed of high solids, flocculation, mixing of thickening agents, sludges, etc.
11.1308 Stirring shaft with paddle, 6 holes code A00001308
Features:
Produces a tangential flow with a limited turbulence and a gentle mixing.
Uses: Stirring at low to medium speed when a good heat exchange among the mixed products is required.
11.1309 Stirring shaft with turbine code A00001309
Features:
Produces a radial flow with a movement of products from top and from bottom with a strong turbulence and shearing.
Uses: Use at medium to high speed for dissolving products or breaking particles.
11.1310 Stirring shaft with turbo propeller code A00001310
Features:
Produces an axial flow in the vessel from top to bottom with a limited shearing. The possibility of a contact of the propeller with the sides of vessel is limited.
Uses: Stirring at medium to low speed of high solids, flocculation or dissolving dyestuffs.
11.1311 Stirring shaft with anchor code A00001311
Features:
Produces a tangential flow with high shearing at the outer parts. The produced flow limits the deposition of solids on the sides of vessel.
Uses: Homogenization at low to medium speed of high solids in liquids of mean to high viscosity.
   
Choice of stirring shafts
The choice is to be made on the basis of the power of the stirrer, the amount of substance to be mixed and its viscosity. The technical features and the ranges of application of the stirring shafts are summarized in the following tables:
Some approximated viscosity values of common substances as centipoise (m Pa x sec) at 20<C.
 
Speed range rpm
Low < 250
Medium 250-800
High > 800
Viscosity Substance
1 Water
5 Milk
10 Kerosene
100 Lubricating oil
1000 Castor oil, glicerine
7000 Refined honey
100000 Molasse
 
Viscosity range m Pa x sec
Very Low 0 - 100
Low 100 - 1000
Medium 1000 - 10000
High 10000 - 100000
Description Code Blades nr Ø of blades shaft mm Ø of shaft mm Lenght of the shaft Speed range Viscosity
Stirring shaft with floating blades A00001304 2 20-90 7 400 M-H VL-L
Stirring shaft with folding blade A00001305 1 40-60 7 400 M-H VL-L
Stirring shaft with fixed blade A00001306 1 50 7 400 M-H VL-L-M
Stirring shaft with propeller A00001307 3 60 7 400 M-H VL-L-M
Stirring shaft with paddle six holes A00001308 1 70 7 450 L-M L-M
Stirring shaft with turbine A00001309 10 50 7 450 M-H M-H
Stirring shaft with turbo propeller A00001310 3 45 7 450 M-H M-H
Stirring shaft with anchor A00001311 2 45 7 450 L-M M-H