agitaor works

Types Several different kind of industrial agitators exist: mechanical agitators (rotating) static agitators ( pipe fitted with baffles) Rotating tank agitators (like concrete mixer) Agitator Mixer Padole Type Agitators working with a pump blasting liquid Agitator turning thanks to gas The choice of the agitator depends on the phase that needs to be mixed (one or s everal phases): Liquids only, liquid and solid, liquid and gas or liquid with so lids and gas. Depending on the type of phase and viscosity of the bulk, the agit ator can be named mixer, kneader, dough mixer, amongst others. The agitators use in liquids can be placed on the top of the tank on vertical position, or horizo ntally (on the side of the tank) or less common, agitator is located on the bott om of the tank. Principle of agitation The agitation is achieved by generating movement of the liquid phase, thanks to the impeller. This is due, on mechanical agitators, to the rotation of an impell er. The bulk can be composed of different substances and the aim of the operatio n is to blend it or to improve the efficiency of a reaction by a better contact between reactive product. Or the bulk is already blended and the aim of agitatio n is to increase a heat transfer or to maintain particles in suspension to avoid any deposit. Data of an agitator The agitation of liquid is made by one or several agitation impellers. Depending on its shape, the impeller can generate: the moving of the liquid which is characterized by its velocity and directio n. Turbulence which is an erratic variation in space and time of local fluid ve locity. Shearing given by a velocity gradient between two filets of fluids. These two phenomena provide energy consumption. Impellers Propellers (marine or hydrofoil) give an inlet and outlet which are on axial dir ection, preferably downward, they are characterized by a nice pumping flow, low energy consumption and low shear magnitude as well as low turbulence. Turbines (flat blades or pitched blades) which inlet flow is axial and outlet fl ow is radial will provide shearing, turbulence and need approximately 20 time mo re energy than propellers, for the same diameter and same rotation speed.

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principle of agitator

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TypesSeveral different kind of industrial agitators exist: mechanical agitators (rotating) static agitators ( pipe fitted with baffles) Rotating tank agitators (like concrete mixer) Agitator Mixer Padole Type Agitators working with a pump blasting liquid Agitator turning thanks to gasThe choice of the agitator depends on the phase that needs to be mixed (one or several phases): Liquids only, liquid and solid, liquid and gas or liquid with solids and gas. Depending on the type of phase and viscosity of the bulk, the agitator can be named mixer, kneader, dough mixer, amongst others. The agitators use in liquids can be placed on the top of the tank on vertical position, or horizontally (on the side of the tank) or less common, agitator is located on the bottom of the tank.Principle of agitationThe agitation is achieved by generating movement of the liquid phase, thanks to the impeller. This is due, on mechanical agitators, to the rotation of an impeller. The bulk can be composed of different substances and the aim of the operation is to blend it or to improve the efficiency of a reaction by a better contact between reactive product. Or the bulk is already blended and the aim of agitation is to increase a heat transfer or to maintain particles in suspension to avoid any deposit.Data of an agitatorThe agitation of liquid is made by one or several agitation impellers. Depending on its shape, the impeller can generate: the moving of the liquid which is characterized by its velocity and direction. Turbulence which is an erratic variation in space and time of local fluid velocity. Shearing given by a velocity gradient between two filets of fluids.These two phenomena provide energy consumption.ImpellersPropellers (marine or hydrofoil) give an inlet and outlet which are on axial direction, preferably downward, they are characterized by a nice pumping flow, low energy consumption and low shear magnitude as well as low turbulence.Turbines (flat blades or pitched blades) which inlet flow is axial and outlet flow is radial will provide shearing, turbulence and need approximately 20 time more energy than propellers, for the same diameter and same rotation speed.

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