Blades, Shafts, Media etc.

Subcategories

• Dispersion Blades

  The high-speed disperser uses a disc-style agitator blade or dispersion blade. The main function of dispersing is not performed at the disc but as the product leaves the blade. To produce the laminar flow for dispersion, these blades must produce a horizontal discharge of the product. It is therefore important to ensure the disperser shaft is vertical. Dispersion blades are fitted with either alternating teeth or grooves. These features result in a rapid shift of brief over-pressure and under-pressure zones. The rapid alternating pressure zones aid in the wetting and mechanical separation of the pigments. The size of these teeth contributes to the flow generated by the impeller. 

  Shear Blades

  These are good starting points for most dispersion operations.  The F-Blade is the most common blade in use.  The common feature of these shear blades is low profile alternating teeth.

  Pumping Blades

  The pumping blades or high vane blades provide less shear and more flow for better blending. Increasing turbulence is produced by their higher tooth profile.

  Mixed Flow

  The Mixed Flow blades are an excellent choice for fibrous materials and dissolving of solid resins

  Louver Blades

  The Louvered Blades add a vent or cup to the blade to introduce an axial flow component.

  Ring Blades

  For the toughest to grind pigment dispersions, these ring blades provide the highest shear of any dispersion blade

  Axial Flow

  These fan-style blades produce the largest axial flow component.

  Polymer Blades

  To avoid metal contamination and improve wear performance we offer Urethane, UHMW, and other polymer blades.

  Our disperser blades can be bored to fit any of the common dispersers including Myers Mixers, Morehouse Cowles, Hockmeyer Dispersers, Schold, Schar, etc. 

  These impellers find use in many chemical processing industries including paint, coating, adhesive, cosmetic, pharmaceutical, etc.

• Mixing Blades

  Industrial mixing applications are different.
  
  DisperseTech offers a broad range of mixing blades to suit your needs. 

  Turbines

  Turbine refers to a wide range of impellers without regard to design, direction of discharge, or character of flow. Turbines include both axial and radial designs.  A turbine is an impeller with two or more blades at a constant blade angle over its entire length.  Blades may be either vertical or set at an angle less than 90°. Blades can be flat or curved. 

  Axial-Flow non-Turbines

  Unlike the turbine, these blades do not maintain a constant blade angle over their length.  These blades which include propellers and hydrofoils are considered axial flow impellers.  The profile and angle of these blades vary across their length.  

  Paddles

  While basically a turbine-type blade, the paddle draws its distinction from its large Diameter/Tank Ratio.  These impellers are run in the laminar flow region, or in the transition and turbulent regions, paddles are run without baffles.  In high viscosities, paddles are run in conjunction with other blades.  

  Dispersion Blades

  These impellers are extremely effective at powder dispersion and emulsion.  They are characterized as low-flow high-velocity impellers. These impellers are primarily radial discharging. The high operating speed of the dispersion blade results in high power input.   As limited flow is induced power input results in high shear.  

  See more Styles and Details
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  Hubs and shafts

  Laboratory shafts, Welded and Bolted Hubs, Taper Plates, End Caps and other items for mounting dispersion blades

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  Grinding Media

  Grinding media is used in wet milling and dry milling operations.  Grinding Media is typically a bead of uniform size, shape, and density.  The media is agitated in high concentration with a slurry (or mill base) to be ground.  In a small media mill a central shaft agitates the media and slurry.  Energy is transferred from that shaft to the nearest layer of beads and from that layer to subsequent layers of beads.  It is within that power transmission that the mill base is exposed to extremely high shear and impact forces.   

  Media Selection

  Media Size

  Media Size is chosen both based on the type agitated equipment or mill and the agglomerate size of the slurry. For best stress transfer in a mill it is traditionally recommended that media diameter to particle diameter be 10:1 or greater.  Large media enhance impact forces while small media cause more collisions.

  Media Density

  Media Density affects impact energy in the mill.  Denser media impart higher impact forces.  However, there are limits.  Mill base viscosity must be sufficient to support these high densities.  Dense media in low viscosity mill base can result in increased media packing, temperature rise, and mill and media wear. 

  Media Shape

  While some mills will use cylinder and other shaped media, Bead mills use spherical media.  The overall quality of the sphere is still important.  It plays a role in the mill wear and heat generation.  A quality sphere produces the best milling performance in a small media mill.

  All grinding media is not created equal. DisperseTech offers a broad range of media for you wet milling operation. We can assist with media selection for your particular products and production equipment. Whether you operate sand mills, horizontal mills, basket mills, attritors or vertical mills, we have the media you need. From inexpensive sand, to glass, zirconium silicate, zirconia oxide, chrome steel and steel shot we carry a braod range of products. We can assist in determining the appropriate material and charge for you mill.

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  Safety Items

  Shaft Guards, Tank Covers, Blade Covers - Reduce fumes and vapors leaving your dispersion tank. Keep foreign material from falling in your batches.  Protect Operators from sharp blade edges.  Keep Plant and Operators safe from common dispersion dangers.

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  Industrial Screens

  We offer high-quality industrial screens including:

  • Replacement Circular Screen for your vibratory separator, including Vorti-Siv®, Sweco®, Midwestern Industries®, Kason®, TEA®, Russell Finex®, and more. 
  • Manual Screens and Test Sieves
  • Square and Rectangular Screens
  • Self Cleaning Screens
  • Ultra-Sonic Screens