For products that undergo a high viscosity phase, multi-agitator and planetary mixing equipment are commonly employed. High solid formulations of medium viscosity can be prepared in single-shaft rotor/stator mixers or high speed dispersers. Some mixers consist of a U-shaped horizontal trough and an agitator made up of inner and outer helical ribbons that are pitched to move material axially, in opposing directions, and also radially: this combination promotes fast and thorough blending, with speeds in the range of 300 feet/min (1). Internal mixing parts can be shovels, helixes or turbine for medium-viscosity foods for high-viscosity application, the internal organ will have high resilience, high diameter in all its parts an low rotation speed. Machinery used for these applications can have a fixed body with moving internal mixer/blender/agitator, or both body and internal parts moving, usually in opposite rotary directions, in order to enhance the mixing effect. Mixing high viscosity fluids and high solids formulationsĮxamples of viscous liquids or high solids formulations are chocolate during tempering, nougat, confectionery bases, many bakery doughs, batters, pasta before extrusion, meat pâté, fats, etc. In these circumstances, having the right machinery is just a part of the picture: a deep knowledge or all ingredients is needed in order to decide the mixing equipment, length, temperature etc. We work to lower costs and increase productivity for all of our clients, offering competitive pricing for OEM designs and applications.Bakery and confectionery industries, among others, face the challenge of mixing high viscosity fluids (fats, syrups, etc.), mixing fluids containing high volumes of powders (pastes, doughs, covering batters etc.) or mixing together in the same recipe solids of different size, shape and density (ingredients for snack bars as cereal flakes, nuts, dried fruit, chocolate bits etc.). Need help choosing the right solution for your application? Let SMD Fluid Controls help. There are no moving parts and the option works well because it can measure the presence or absence of many different types of liquid. With optical switches, measurement is done using a laser wave or forward light scattering and a probe. The best option for high viscosity liquids is to opt for non-contact options like optical or ultrasonic level sensors for accurately measuring liquid levels.Īcoustic waves emitted by ultrasonic liquid level sensors and the measuring of the echo returned, make it possible to know liquid levels without ever having to physically touch the matter – eliminating the risks mentioned earlier. The Solution: Optical or Ultrasonic Level Sensors Keep in mind too that temperature conditions can change viscosity levels so be sure you’re selecting a solution that is most compatible with your specific application. Problems including the float getting stuck or even damaging the pressure ports are all possible. When trying to get an accurate measurement you cannot use the same float switches or liquid levels in every situation. ![]() ![]() ![]() To give you a better idea of different viscosity levels or centipoise (cP) measures, water measures at 0.894 cP, castor oil at 650 cP and ketchup at 50,000 – 100,000 cP.Īs you can see the “thickness” plays a major role in how freely these different fluids can flow. Viscosity is used to describe how thick a substance is and defines its ability to change shape under stress or tension. Is it corrosive? Thick? Hot? These elements can affect how measurements are taken.įor this post, we’ll be focusing on viscosity and how highly viscous (thick) liquids (think oil, paint, molasses) present a unique challenge for measuring. There are, however, some factors to take into account when selecting the proper level sensor or float switch – one of the most important being the type of liquid being measured. Regardless of the application, their ability to measure and identify the presence or absence of a liquid in a vessel is critical. Measuring fluids, and doing so with precision is exactly what float switches and level sensors were created to do.
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