Novel paddle shape of stirring paddle of internal mixer

Abstract

The invention relates to the technical field of stirring paddles of internal mixers, and discloses a paddle shape of a novel stirring paddle of an internal mixer, the paddle shape comprises an internal mixing cavity, and a top pressing plate is arranged at the upper part of an inner cavity of the internal mixing cavity. The edge surface of the stirring paddle adopts a gradual change mode, the distance from the edge point to the inner wall of the internal mixing cavity is reduced along the stirring direction, and the paddle-shaped dispersion shear force mainly comes from shear and friction force of the material speed of the edge surface of the paddle and the inner wall of the cavity, which is better than the dispersion force of the existing stirring paddle. Mainly, materials are sheared by the speed difference of the two stirring paddles, as the interval between the two stirring paddles is large, the speed difference is relatively small, the speed difference is beneficial to the self rotation speed and the speed difference and the friction force of the inner wall, and the dispersion strength caused by the speed difference and the friction force is far higher than the dispersion strength formed by the existing Banbury paddle by utilizing the speed difference; and meanwhile, dispersion force generated by speed difference of double propellers can be utilized, and a single propeller can be applied to a dispersion process.

Description

technical field [0001] The invention relates to the technical field of stirring paddles of internal mixers, in particular to a paddle shape of a new type of stirring paddles of internal mixers. Background technique [0002] Now the banbury paddle type is mainly used in internal mixers. When mixing very fine powder materials with fluids, there is a relatively big problem that is the uniformity of mixing. From the actual effect, in order to achieve Uniform effect, the existing internal mixer must be under pressure, long-term strong stirring to achieve the maximum dispersion effect. In practice, in order to achieve the best dispersion effect, it is usually stirred at high temperature for several hours. Stirring at low temperature for several hours, even in such a case, there is still a problem of poor dispersion. In order to solve this problem, an improved paddle shape of Banbury pulp is proposed. [0003] The Banbury paddle mainly relies on the speed difference between the tw...

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Problems solved by technology

[0002] Now the banbury paddle type is mainly used in internal mixers. When mixing very fine powder materials with fluids, there is a relatively big problem. The uniformity of mixing, from the actual effect, in order to achieve a uniform effect, the existing internal mixer must be under pressure, long-term strong stirring to achieve the maximum dispersion effect, in practice to achieve For the best dispersion effect, it is usually stirred for several hours at high temperature and several hours at low temperature. Even in this case, there is still the problem of poor dispersion. In order to solve this problem, an improved paddle of Banbury pulp is proposed. shape

[0003]The Banbury paddle mainly relies on the speed difference between the two pulps to form the shear force of the viscous fluid, and relies on the shear force to disperse the powder. The front shear force gradient produced by the difference does not change much, so it often fails to achieve good results in the case of high requirements

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