Study Of High-Plastic Fluid Mixing Rules In A Non-Blade Mixer

As power supply of the solid rocket, solid composite propellant has gotten great attention by every powerful country on its research and production. Many of the research results have been kept as secret, advanced mixing and casting technique haven't been reported.The mixing process is a key segment in the propellant's product, western countries mainly use the vertical-vacuum mixer, our country also almost all use this type of mixer. Because there is friction between the blade and propellant, additionally, the technical index arm has always been improved recent years, and the dangerous superfine oxidant keep increasing, risk of product the solid composite propellant is increasing quickly.As there is no agitating in the non-blade mixer, friction decreases extraordinarily. Compared with other mixers, it's safer to use the non-blade mixer under the same mix qualification. With the development of the aerospace industry, the non-blade mixer will get more attention and application. Our country's research on the non-blade mixer has just started recent years, at present, many work is on the very beginning. The non-blade mixer's research can be divided into two main parts: the mechanics of the non-blade mix process and the mixing-pouring technology research, this paper mainly focus on the first part and study on the flow law of the propellant. Because there is no experience and material on the non-blade mixer, this paper begins with some basic researches, and mainly works on the rheological characteristics and the flow pattern of propellant.Design structures without paddle mixer test-bed, slurry mixed to realize the process of direct observation. Structures slurry test system and mixed-focus rotating shaft of the vibration test system, combined with the observed mixing phenomenon by comparing the various stages of slurry form and movement patterns summed up the general rules of mixing.Adhesion layer of the slurry for movement analysis and force-balance analysis, have been shedding adhesion layer conditions. Combination of qualitative analysis of the quantitative calculation of key parameters on the mixer off adhesion layer and the impact of mixing to explain the experimental process of mixing found in a number of phenomena and give some advice about mixer parameters. The research work of this paper is the base for the non-blade mixer's design, and it has also made a solid base for the later research.