Stirring device for dispersing and dissolving polymer

Abstract

The invention provides a stirring device for dispersing and dissolving a polymer. The stirring device includes a stirring shaft 1, an outer blade 2, an inner blade 3, an inner blade 4, a stirring tank5, a coupler 6, a speed reducer 7 and a motor 8, wherein the inner blade 3 and the inner blade 4 are same in structure and have a diameter which is about 1 / 2 of the diameter of the outer blade 2 anda height which is 2 / 3 of the height of the outer blade 2; the inner blade 3 and the inner blade 4 are different in installation height and direction; the inner blade 3 is arranged on the upper portion, and the inner blade 4 is arranged on the lower portion; and the inner blade 3 and the inner blade 4 are perpendicular to each other and form 45-degree angles with the outer blade 3 respectively. Thestructure of the stirring blade disclosed by the invention has the structural characteristics that the density of the blades decreases from inside to outside and the blades are uniformly distributedfrom top to bottom, the structure has the structural characteristics that the structure has three squares in a front view and is in the shape of * in a top view. When the stirring blades rotates, a defect that traditional paddles have large external disturbance and small internal disturbance can be overcome, uniform disturbance can be transmitted to the outside and the inside of the stirring tank5, the stirring and mixing rate is increased, and polymer caking at the bottom and the wall of the tank can be effectively avoided.

Description

technical field [0001] The invention relates to the technical field of chemical engineering fluid mixing, in particular to a stirring device for dispersing and dissolving high-viscosity polymers. Background technique [0002] The stirring and mixing process is a very important unit operation in the chemical production process. The commonly used devices in the mixing process are stirring devices of various structures. Both flow and pulsation play a role. Polymer is a chemical product with high molecular weight, such as HPAM, xanthan gum, etc. In oil field tertiary oil recovery and food industry, it is often necessary to dissolve these polymers in clean water and mix them evenly. Usually, the dosage of this polymer in water is very small, about 1000mg / L~5000mg / L, and the solution will show very high viscosity. If the paddle structure is not good, the mixing efficiency is low and the effect is poor, which often leads to the polymer being stirred The bottom of tank 5 and the ...

AI Technical Summary

Problems solved by technology

When traditional stirring paddles disperse and mix such solutions, the agglomeration phenomenon of the tank wall and the bottom of the tank is considered emphatically, and the stirring paddles with a diameter close to the diameter of the stirring tank 5 are used. The disturbance of the solution at the wall is high, while the disturbance of the solution in the middle of the stirring tank 5 is low, which affects the stirring mixing effect and stirring efficiency

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