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Dispersion Blade Designs
Most dispersion blade 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 th resulting tabs.
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Group 1 (Standard 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. |
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F Blade "Sawtooth" 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. |
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E Blade "Cutter" |
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Group 2 (Alternate Blades) - Originally offered as competitive offsets to our standard blades. These impellers have gained favor with some customers. |
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K Style "Clipped" Requires less horsepower and is applicable in operations where the available horsepower is borderline for the batch size. |
H Style "Hi Vane" Another excellent high flow, low shear impeller. Great for blending and agitation. |
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I Style "Pick" High viscosities / high solids impeller, produces shear with increased turbulence. |
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These blades represent the earliest and most polular of the dispersion blade styles.
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 inlcude 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.
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Group 3 (Louvered Blades) - Louvered or vented impellers offer an axial component to the flow. |
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R - "ITT" Intensive Type with Teeth The Conn ITT provides high shear and agitation; 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. |
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S Blade "ITC" The Conn ITC has large pitched teeth on the periphery instead of louvers providing a high degree of pumping. |
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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.
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Group 4 (Ring Blades) - multiple rings provide greater shear than the other blade designs. |
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C - "CSI" 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" Product passes through a series of curved rings to produce fine grinds, laminar flow, and low heat. |
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.
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Group 5 (Poly Blades) - designed to produce greater wear resistance than the standard stainless steel designs |
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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. |
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N - Norstone "Urethane" Urethane blade provides excellent wear resistance. |
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Impeller
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