Device and method for removing air bubbles in shear-thinning non-Newtonian fluid

Abstract

The invention belongs to the field of fluid degassing, and in particular discloses a bubble removing device and a method for shear thinned non-Newtonian fluid. The device comprises a support frame, a lifting mechanism, a rotating mechanism, a conical stirrer and a liquid container, wherein the lifting mechanism is arranged on the support frame, and the lifting mechanism is fixedly connected with the rotating mechanism through a horizontally arranged telescopic link; the conical stirrer comprises a stirring rod and a conical stirring head; the liquid container is arranged below the conical stirring head. The method comprises driving the stirring rod to rotate by the rotating mechanism and driving the conical stirring head to rotate at a rotation speed of 0.01 rad / s to 20 rad / s to stir the liquid placed in the liquid container until the air bubbles in the shear thinned non-Newtonian fluid are removed. The invention can effectively remove the air bubbles of the shear thinned non-Newtonian fluid without introducing new air bubbles, and has the characteristics of simple structure, easy operation and high efficiency.

Description

technical field [0001] The invention belongs to the field of fluid degassing, and more specifically relates to a device and method for removing air bubbles of a shear-thinning non-Newtonian fluid. Background technique [0002] Non-Newtonian fluids are involved in a wide range of industries, including polymer manufacturing, pharmaceuticals, paper, and food. Shear-thinning fluid, also known as pseudoplastic fluid, is a common type of non-Newtonian fluid. Nail polish, ketchup, syrup, pulp in water, latex paint, some silicone oils, and some silicone oil paints that are common in our daily life are all shear-thinning fluids. During industrial processes involving shear-thinning fluids, air bubbles can easily form in the fluid due to contact with surrounding gases. The existence of bubbles not only affects the appearance of the product, but also causes a series of defects in the product, which greatly reduces the quality and life of the product. Therefore, removing bubbles from t...

AI Technical Summary

Problems solved by technology

However, the stirring device of the degassing device is designed with an inclination, the area of ​​the baffle plate is large, the eddy current formed by the fluid is complicated, and it is easy to bring air in to form new bubbles. In addition, the degassing device is only for molten metal, and the device is relatively complex

Chinese patent CN207237371U proposes a vacuum degassing device for coatings, which maintains pressure on the inner tank through a double-layer vacuum barrel structure to achieve better degassing effect, but the device is only suitable for vacuum environments, vacuum degassing The composition of the device is generally more complex, requiring the arrangement of vacuum pumps and complex pipeline structures, etc.

[0004] Therefore, there is an urgent need in the art to propose a device and method for removing bubbles from shear-thinning non-Newtonian fluids to solve the problems of complex structure, easy introduction of new bubbles and low bubble removal efficiency in the prior art.

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