Used Mixer and Blender equipment

Mixers and Blenders
Mixers and Blenders are industrial machines that are used to blend, emulsify, homogenize, or otherwise mix different materials into a single substance. Mixers and blenders are used for different purposes within numerous industries such as pharmaceutical, food, beverage, chemical, agriculture, pulp and paper, adhesive and sealant, water treatment, and automotive. Special Projects International offers used industrial mixers and blenders from several well-known manufacturers like Baker-Perkins, Buhler, Chemineer, Cowles, Eiger Machinery Co., E.T. Oakes, Hayes & Stolz, Hockmeyer, INDCO, J.H. Day, Littleford Day, Marion, Myers Engineering, Patterson-Kelley, Ross, Scott, Shaffer, Teledyne Readco, Votator, and more. The different types of mixers and blenders in our inventory are listed and described below.

Ribbon Blenders/Paddle Blenders
Ribbon blenders and paddle blenders are mixing systems held within a U-shaped trough. A double ribbon agitator has inner and outer ribbons around the shaft that move material in a well-balanced axial and radial flow pattern – the inner ribbon moves the material in one direction while the outer ribbon moves material in the opposite direction. Paddle blenders have pitched blades around the mixing shaft that slowly blend powders and/or liquids. Ribbon/paddle blenders offer the functionality of both types by having an inner ribbon and outer paddles. These blenders are popular amongst a wide range of industries including pharmaceutical, food, chemical, and ceramic.

Continuous Mixers
As the name suggests, material is continuously mixed and discharged through this machine. Continuous mixers are ideal for high-volume processes that require speed and efficiency. Continuous mixers are commonly used in the food processing industry.

Dispersers
Disperser mixers are equipped with a disc-shaped blade at the end of a rotating mixing shaft. These mixers are commonly used to mix pigments and liquids. Dispersers generate the shear force necessary to rapidly de-lump powders in a liquid. For this reason, they are often used to dissolve soluble solids in a liquid – such as mixing pigments in paints.

Single Arm Mixers
Single arm mixers are equipped with a jacket to aid in temperature control when heating or cooling products. Usually, single arm mixers are designed to rotate the mixer body to help with product removal. The mixing action is a combination of bulk movement, shearing, stretching, folding, dividing, and recombining as the material is pulled and squeezed against blades, saddle, and side walls. The design of single arm mixers makes them applicable to processes that knead and extrude highly viscous material such as the mixing of pastes, rubber, and heavy plastic masses. These mixers are commonly used in the food, rubber, pharmaceutical, and chemical industries.

Double Arm Mixers
Double arm mixers have two mixing arms/blades that sit horizontally and parallel to the bottom of a mixing trough. The blades rotate at different speeds in opposite directions causing the product to be transferred from blade to blade and from end to end, resulting in a figure eight pattern. Double arm mixers are designed to knead and mix highly-viscous materials. Additionally, double arm mixers can be used to mix and/or to dry heat-sensitive materials that undergo phase changes during processing – such as liquids to plastics to powders.

Roller Bar Mixer
A roller bar mixer is a type of horizontal bakery mixer. Roller bar mixers are designed similarly to single or double arm mixers, but feature three roller bars that knead the material. These machines are usually used to mix doughs, creams, and other highly-viscous materials.

Conical Screw Mixer
A conical screw mixer operates by means of three distinct intermixing actions that are performed simultaneously. A rotating screw agitator produces a lifting action as it spirals the materials in an upward flow. At the same time, the screw removes material away from the wall and deflects it into the center of the tank. Lastly, the material lifted by the screw eventually gravitates downwards – continuously intermixing with material being spiraled upwards. Conical screw mixers are commonly used to moisten, dry, and/or mix free flowing powders.

Drum Mixer
A drum mixer functions by a single drum rotating about a horizontal axis. Drum mixers are usually powered by a hydraulic system that lifts an upright drum from floor level and places it on its side for rolling. Drum mixers are commonly used to blend batches of powder, mix chemical drums into homogenous product prior to use, or to grind and smooth parts in media. They can also be used to mix drums of paint, oils, urethane resin, plastisol, glue, dyes, flavors, etc.

Emulsifier Mixer
Emulsifier mixers are designed to mix and shear fluids to reduce the droplet size of a discontinuous phase and prevent separation. These machines are commonly found in industries like chemical processing, liquid pharmaceutical products, and food/beverage processing.

Twin Shell V-Blender
Twin shell v-blenders have two blending shells that are connected to form a V-shape. As the V-shape rotates, the product is separated. After a 180 degree rotation, the product accelerates and clashes at the narrow bottom of the “V.” The repeated action of separating and re-introducing portions of the mixture results in a highly-efficient blending performance. Twin shell V-blenders are commonly used to mix solids to solids and solids to liquids.

Vacuum Mixer
A vacuum mixer operates a mixing process within a central mixer drum that is fitted inside a casing that can pump air out and create vacuum conditions. Mixing in vacuum conditions prevents bubble formation by limiting excess air from entering the process. Vacuum mixers are commonly used in preparation of cements, amalgam, grease, caulk, toothpaste, and other high-viscosity products where bubbles are undesirable.