Power Analysis And Experimental Study Of Horizontal TMR Mixer

In this thesis,aiming at the problem of high power consumption in the working process of horizontal biaxial TMR mixer,the experimental study was carried out with licorice stems,silage and refined feed as the test objects,and the horizontal biaxial TMR mixer as the test device.The material characteristics and mechanical characteristics of the fully mixed diet components are carried out experimentally and studied with existing equipment to provide data support for subsequent theoretical analysis,and based on the theoretical analysis of shear and conveying processes and the establishment of physical models of material units and mathematical models of power consumption,the key factors affecting power consumption are determined,and power consumption tests are carried out.In order to find the optimal combination of parameters with low power consumption and good feed palatability during the working process of horizontal dual-axis TMR mixer,it will provide a theoretical basis for the subsequent research and development of horizontal dual-axis TMR mixer.The main research and final conclusions of the power consumption of horizontal dual-axis TMR mixer in this thesis are as follows:1.Determination of material characteristics of licorice stems,silage and corn flour.Using the Sartorius MA100 moisture content tester,the moisture content determination test was carried out on the whole mixed diet components.The static friction coefficient and rolling friction coefficient between the components of the fully mixed diet are determined by means of a self-made inclined instrument.Using the CFT-I surface comprehensive tester,the loading force of the licorice stem wood bolt layer is 170 N,the reciprocating speed is 350 r/min,the running time is 120 min,the reciprocating length is 5 mm,and the friction coefficient is0.23;the loading force of the licorice stem is 30 N,the reciprocating speed is 350 r/min,the running time is120 min,the reciprocating length is 5 mm,and the friction coefficient is 0.78.The design scheme was designed using Design Expert’s experimental design software,and the shear test was carried out on the Instron8801 universal testing machine with the loading speed,different parts of the stem,and different blades as the test factors,and the maximum shear force and maximum shear strength as the test indicators.2.Design and theoretical analysis of key components of horizontal dual-axis TMR mixer.According to the existing experimental conditions and theoretical analysis,the spiral churnosaurus is designed.The unified theory of Mohr-Cullen strength and Yu Maohong’s double shear was used to theoretically analyze the process of shearing licorice stems,and the fracture form of the experimental samples was explored.Drawing on Darnell-Mol solid conveying theory,non-plug flow solid conveying theory and new extrusion theory,the force analysis of the material element in the spiral groove of the horizontal biaxial TMR mixer and the velocity analysis and acceleration analysis of the material element are used,and the continuity equation and kinematic equation of the material are constructed and the dimensionless linear treatment is constructed,and the power consumption model of the horizontal biaxial TMR mixer is established on this basis.The influence law of structural parameters,motion parameters and material characteristic parameters of the material is discussed in the analysis,and the influencing factors of the subsequent test are determined.3.Horizontal double-shaft TMR mixer kneading power consumption test study.Taking the speed,processing time and blade type of spiral churning dragon as the test factors,and the standard grass length rate and kneading power consumption as the test evaluation indicators,the three-factor three-level Box-Behnken kneading power consumption test was carried out.Through the analysis of variance and the influence analysis of interaction factors on the test results,it can be concluded that the influence of each test factor on the standard grass length rate is from large to small for processing time,blade type and churning speed,and the significance of influencing the kneading power consumption is churning speed,processing time and blade type from large to small.The response surface analysis and parameter optimization of the interaction influencing factors were: churning dragon speed of 20r/min,processing time of 29 min,and the type of blade was plum blade;at this time,the standard grass length rate was 82.634%;the kneading power consumption was 4525.815 k J,and the error between the test value and the model optimization value was less than 4%,which could meet the actual operation requirements.4.Horizontal dual-axis TMR mixed power consumption test study,with spiral churning dragon speed,processing time and blade type as the test factors,mixing uniformity and mixed power consumption as the test evaluation index,carry out three-factor three-level Box-Behnken hybrid power consumption test,analysis of variance and interaction factor influence analysis of the test results,it can be concluded that the influence of each factor on the mixing uniformity is significant from large to small for processing time,churning speed,blade type The significant influence on hybrid power consumption is from large to small for churning speed,processing time,and blade type.The response surface analysis of the interaction influencing factors and the optimization results are: when the churning speed is 20r/min,the processing time is 8min,and the blade type is selected,the mixing uniformity is 80.308%,the mixing power consumption is1166.185 k J,and the performance of the horizontal dual-axis TMR mixer reaches the best.The verification test is carried out,and the error between the test value and the model optimization value is less than 7%,which can meet the actual operation requirements.The research results can provide a theoretical basis for the subsequent research and development of horizontal dual-axis TMR mixer.