Dispersion Blade Designs

Dispersion Blade Designs

Stainless Steel Single Piece Blades

Most dispersion blades are formed from a circular disk of material, typically 304 stainless steel. Teeth are formed around the perimeter of the disk by cutting slits into the disk and bending the resulting tabs.

Group 1 (Hockmeyer Style Blades)

Our oldest and most popular styles. Formed from a single piece of stainless steel with different profiles to adjust levels of shear and flow.

F Blade "Sawtooth"

The F blade is the standard shear bade in this group. Uniform teeth accelerate pigment particles and breakup agglomerates. High shear is quickly achieved with turbulent flow.

G Blade "Pumper"

High-vaned "Pumper" blade is designed for maximum turbulent flow while still producing shear.

E Blade "Cutter"

Superior for dissolving resins, dispersing fibrous materials and in high vehicle viscosities and/or solids loadings applications. Produces shear but with more turbulence than other designs.

K Style "Clipped"

Similar to the F blade, the K blade features a reduced blade surface. It requires less horsepower and is gerally used in operations where the available horsepower is borderline for the batch size.

Group 2 (Cowles Style Blades)

Originally offered as competitive offsets to those Blades offered by Cowles.

HS Blade - "Cowles Blade"

The HS series dispersion blade is a variation of the standard saw tooth blade. It is often referred to as a Cowles blade. Like the F Blade, it features alternating teeth.

H Style "Hi Vane"

Another excellent high flow, low shear impeller. Great for blending and agitation.

I Style "Pick"

High viscosities / high solids impeller, produces shear with increased turbulence.

Group 3 (Louvered Blades)

A variation on the disperser blade is the louvered or vented impeller. These are similarly formed from a flat disk of material and may also include teeth. However, inside the flat center area, louvers or vents are formed, by cutting a slot and bending or cupping the material around the slot. These louvers serve to introduce an axial (down along the shaft) component to the flow.

R - "ITT" Intensive Type with Teeth

The Conn ITT provides high shear and agitation. It offers a good combination of material movement shear.

Q - "IT" Intensive Type Blade

The Conn IT produces positive but gentle material flow; Low shear smooth fast mixing without air inclusion.

X - "HSXP" Blade

The HSXP blade features serrated teeth and also includes alternating fins or vents in the center of the impeller to help pump the material through the blade.

Group 4 (Axial Flow Blades)

While not as efficient as propellers or pitched Blade turbines, these blades provide the most axial flow of any dispersion blade.  

S Blade "ITC" Intensive Type Cutter

The Conn ITC has large pitched teeth on the periphery instead of louvers providing a high degree of pumping.

PMP Blade

The PMP series impellers are designed primarily for blending, mixing, and general agitation. The PMP series blade is designed similar to a fan blade so that your batch is moved around the tank with minimal shear.

Multi Piece Fabricated Blades

Group 5 (Ring Blades)

Another more radical configuration uses a series of annular surfaces or rings to shear material flowing through spaces between them. While previous designs were formed from a single piece of material, these impellers are fabricated from several pieces of material, machined and/or formed to a specific profile, and finally assembled into the finished impeller.

C - "CSI" Constant Shear Impeller

Product accelerates through a series of rings machined to produce venturi. Yields very fine grinds with laminar flow and less heat build-up.

D - "Ring" Blade

Product passes through a series of curved rings to produce fine grinds, laminar flow, and low heat.

Polymer Blades

Group 5 (Poly Blades)

In an effort to improve wear, polymer blades were developed. These impellers produce superior wear resistance in certain applications. As forming teeth in these materials is quite difficult, grooves are machined and/or cast into the impeller to provide the pumping and impingement surfaces.

P Type "Polyblade"

Manufactured from Ultra-High Molecular Weight Polyethylene (UHMP) for superior wear.  Effective in highly abrasive applications with no metal contamination.

O - Conn "Poly-ITT"

UHMW version of the ITT. Good combination of material movement and shear.

N - Norstone "Urethane" Impeller

Urethane blade provides excellent wear resistance.