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Selection method of mixer and blender (mixing equipment)

2020-10-26 05:40:06
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1. For powders with poor fluidity, select a forced shear mixing mixer


1. Analyze the reason


In the food industry, powders with poor fluidity are often encountered, because the particles inside the powder with poor fluidity move slowly, which affects the mixing effect. A stirring blade is required to perform forced shearing and stirring inside the powder to overcome the mixing difficulties caused by poor fluidity.


2. Its representative models


Advantages: high mixing efficiency; relatively uniform powder particles microscopically.


Disadvantages: There are dead spots in the mix; equipment energy consumption is high.


For the powder situation, the equipment is required to have: good mixing uniformity, no dead ends, high mixing effect, low power consumption and so on.


The mixing equipment is required to not destroy the physical indicators of the powder, such as the specific gravity, average particle size, and particle surface shape of the powder.


The mixing equipment is also required to operate safely, operate conveniently, save electricity, and save labor.


2. Gravity convection diffusion mixer can be used for powder with good fluidity


  1. Analyze the reason

搅拌型混合机

When mixing metal powders with good fluidity, V-shaped machines, three-dimensional machines, etc. are often used. This is because the powder has good fluidity, and its convection diffusion speed will be fast and efficient. Using a convection diffusion mixer can take advantage of the high mixing efficiency of the mixer.


2. Its representative models


Advantages: mixing without dead ends; macroscopically, the powder in each part of the container is uniform.


Disadvantages: Microscopically, the mixing uniformity of powder particles is insufficient; the mixing effect is low.


3. Use a mixer with high mixing performance for mixing tasks that have difficulty in uniform mixing


1. High-efficiency mixers must be used for powders that are difficult to mix uniformly


These difficulties include particularly poor fluidity; it is difficult to mix light and heavy powders; it is difficult to mix ultra-light powders and ultra-fine powders; it is difficult to mix trace elements, etc., and the mixing principle of both gravity convection diffusion and forced shear mixing can be selected. Efficient mixer.


The improvement of the mixing capacity of the mixer is used to overcome the above-mentioned difficulties encountered in mixing.


2. Its representative models


Advantages: high mixing uniformity, can achieve macroscopic uniformity and microscopic uniformity; high mixing efficiency; high material loading rate; low energy consumption.


Disadvantages: The equipment structure is relatively complicated, and the purchase cost is relatively high.


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