Exploring the practical aspects of high speed disperser

There are new people each year who are looking to join up the various aspects of businesses making use of the mixing machines within their manufacturing facilities as well as the laboratories. It can be quite frustrating and complicated for the newcomers of things that may appear obvious to the ones who are experienced. The guide here presents the purpose in terms of presenting a fundamental explanation of when, how, and why about the high speed disperser. This guide can help the newcomers who are looking forward to becoming experts in the near future.

What do you understand by a disperser?

The kind of mixer that is being used for rapidly breaking off the lumps of powdery materials, wetting, and distributing them within a liquid is a disperser. In terms of dissolving the soluble solids in liquid is where it is also used.
high speed disperser

Nature of its operation

Energy transfer is the principle on which the disperser operates. At the high speed disperser, the disc-type blade is generally mounted at the bottom end of that mixing shaft, and at relatively higher speed, it is rotated. The speed happening at the outer tip or at the edge of the rotating disc is the tip speed. They are basically measured in ft each minute which is then calculated by multiplying the diameter that is constant in feet to the discs produced by the revolutions every minute of that of the shafts mixings is noted in terms of the tip speed. Peripheral velocity is the industry term that is used for tip speed.

Through the suction created, the liquids and solids are drawn within the rotating disc. There is a visible whirlpool happening at the top of the mixture down to the top side of the disc in terms of this suction. The disc extending from the bottom of the tank to the underside of the disc is pretty similar to that of the whirlpool which is created. Although they are quite common for the practice over the industry, it is often referred to being the vortex or the visible upper side since the whirlpools here are mainly two vortices.

The energy or the horsepower that is used for driving the disc is instantaneously transferred from the disc into the high speed dispersion mixer when the solids or the liquid is entering the vortices and is sucked into the high-speed disc of the machine here. Some instantaneous changes within the mixture that are contacting the disc progressively with the help of the energy transfer are focused intensively.

They are mainly a series of individual horizontal layers that are descending to down from the top and up through the bottom facing the rotating disc is what. You need to think about the mixer here. The disc is contacted by each layer and then accelerated instantly through the slow movement of the vortex into the very higher speed of the disc being projected to the exteriors away from that of the disc towards the wall of the tank. Shear forces are the rapid tear apart of that of the layer on layer of the mixture.
high speed disperser

Disperser and Agitator

Both high speed disperser and the agitator will work on the principle of mixing. These mixers at often compared to the pumps. Horsepower is the unit of measurement that is required for the gallons each minute that will be discharging the capacity is how the pump’s performance is measured. A disperser is considered an inefficient mixer as it considers the substantially greater horsepower need for each gallon.

It is a great and efficient mixer when it comes to the high-volume low-powered pump, which is an agitator. For every 10 gallons compared to the application of the agitator, a typical dispersion application needs about 1 HP. The agitator, however, does not create any sufficient shear for dispersing most of the solids into that of the liquids as they are highly efficient pumps here. About ½ of the normal speed of the blade for the high shear dispersers are at times used in place of the agitators when a kind of shear is required here for the operation of the moderate shear dispersers. In terms of promoting a better pumping and needing about 1/3 the HP of the high speed dispersion mixer, the discs typically have larger teeth.
High-speed disperser head part

The need for disperser

For de-lumping the powders in a liquid, a high-speed disperser will be generating the sheer force that is required. Dispersion is generally the process of de-lumping. The agitator typically is not able to generate the required shear for dispersing the powders irrespective of the time they have been mixed. The forces that are holding the lumps collectively are robust enough compared to the force applied over the mixer that tried in terms of pulling them off is the reason here. To hold the sheared mixtures in the suspension, these mixers do a great job, but they will not be able to shear off the mixture.

Limitations of a disperser

The high speed disperser is mainly the rheology-dependent product. A lot has to do with the characteristics of the flow of the product that is being dispersed here. It will not be able to move freely to and from the blade happening in the wall of the tank where the dead zones are generally undispersed with the materials of the tanks if it is not thick enough. The ability of the blade in terms of generating proper flow from that of the tank can also be hindered with the sticky and tacky products.
High-speed disperser

High-speed disperser

It usually depicts a doughnut with a blade that acts as the hole through the proper flow. In terms of contacting the blade, the product should be flowing in a circular pattern around the tank while rolling in for contacting the blade. Doughnut roll is the kind of flow that at times referred to this. A thorough dispersion is not achievable here if the particles that are undispersed stick to the wall of the high speed disperser.

The operating range of the disperser can be extended with the addition of supplementary agitation that can aid in feeding the blade of the disperser. A shaft mixer is what this machine is generally known to be as offered by the leading manufacturer and suppliers of Franli. Both slow-moving blades on the sweeper and shaft are there in this that can help promote the flow of the mass with the addition of mixing shafts to the blades of the disperser for generating higher shear.

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This article only represents the author’s point of view.
This article is published under the authorization of the author.
Source: Franli

This article address : Exploring the practical aspects of high speed disperser

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