Sigma Mixer – Design, Construction, Operation, Applications

The sigma mixer is a commonly used mixer for providing strong viscosity. This object illustrates the operation, architecture, purpose and working efficiency of the sigma mixer. The dissimilar substitution planned for the sigma mixer is considered. The sigma mixer and Dough mixer is one of the most recognized uses of heavy viscosity tools for mixing and reflexology. It is a member of the double arm kneader mixer family.

Double Arm Kneader Mixers
All double arm kneader mixers are qualified with two mixing blades positioned in a horizontal W-shaped form. A variety of blade shape have evolved, every of which is appropriate for a scrupulous type of conformity. Spiral blade, masticator blade sigma blade, nabbed blade, and shredder blade are the styles commonly used for knives. The blades ‘ gyratory motion is either peripheral to each other, or the blades within the furrow can stretch outside. The blades move at the same or different speeds towards each other. At near clearances (2-3 mm), the blades go over the container walls and each other, resulting in a homogenous mix.

Sigma Mixer

Sigma Blade Mixer
It is crucial to support tangential and oblique movement of the chemical in mixers which manage acidic products. The sigma blade’s geometry and design is meant to draw, shear, coarse, knead, and fold the glutinous mass of material by the blade manipulate beside the mixer trough’s sides. The sum this happens to depends on the blade hack-peripheral or overlap, and the blade replacement rate ratio. The blade’s twist angle can be adjusted to match the appropriate shear.

Tangential and Overlapping Blade Action
In the horizon the blades plan to flap in the trough gathering imaginatively the front blade usually move faster than the back blade more often than not in the 3:2 ratio. Peripheral blades are commonly used for superior viscosity materials such as glue, rubber paste, flush color, dye, and pigment.
In the overlap strategy the blades reach beyond the container’s burden. It is important that the skilled position of the both blades is not affected due to the overlapping exploit, and as a result both the blade flap at the same speed. Using the overlap blade motion, materials which flow freely or travel stealthily down into the blade are varied.

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Operation of Sigma Blade Mixer
In process, material is loaded at the top of the container from side to side distinctively 40% to 65% of the total volumetric capacity of the mixer. The blade substitute is characterized by a severe duty drive system consisting of an engine, gearbox, coupling and gears. The sigma blender’s tip speed is typically inadequate, up to 60 meters per minute. Mixing may be allowed at average temperature, or under unhealthy conditions of heat. To maintain the necessary temperature situation within the blender, the mixer trough can provide jackets for the transmission of hot or cold media.

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