本文選題：飼料攪拌機(jī) + 混合機(jī)理�。� 參考：《安徽農(nóng)業(yè)大學(xué)》2015年碩士論文

【摘要】：近年來,我國(guó)畜牧業(yè)得到突飛猛進(jìn)的發(fā)展,飼料攪拌技術(shù)的要求也必將越來越高。根據(jù)實(shí)際養(yǎng)殖需求和飼料自身特性的不同,飼料攪拌設(shè)備有立式、臥式、漿式等多種結(jié)構(gòu)形式。目前使用最廣泛的是臥式飼料攪拌機(jī),主要因?yàn)槠渖a(chǎn)效率高、工作可靠性強(qiáng)、價(jià)格便宜等特點(diǎn)而廣受好評(píng)。本文主要以螺旋帶式動(dòng)物飼料攪拌機(jī)為研究對(duì)象,分析了該攪拌設(shè)備的飼料混合機(jī)理,對(duì)其關(guān)鍵結(jié)構(gòu)參數(shù)螺旋升角、攪拌臂排列方式、攪拌軸轉(zhuǎn)速等進(jìn)行分析,建立了虛擬樣機(jī)模型,對(duì)攪拌軸進(jìn)行了靜強(qiáng)度分析及對(duì)攪拌裝置整體進(jìn)行了模態(tài)分析,并對(duì)攪拌系統(tǒng)進(jìn)行離散元數(shù)值仿真,對(duì)飼料顆粒的運(yùn)動(dòng)軌跡及其混合均勻度進(jìn)行數(shù)值分析。1、分析攪拌設(shè)備的結(jié)構(gòu)組成及混合機(jī)理,并對(duì)單位飼料顆粒進(jìn)行受力分析,分別得到其在X軸跟Y軸上的分力公式,并推導(dǎo)出顆粒的位置方程式。2、對(duì)攪拌機(jī)主要結(jié)構(gòu)的結(jié)構(gòu)參數(shù)及工作參數(shù)進(jìn)行研究分析,得到其關(guān)鍵參數(shù)的基本取值:攪拌倉(cāng)體積取值為6m~3,攪龍最大直徑為1867mm,底部的螺旋葉帶與攪拌倉(cāng)壁間隙為13mm螺旋帶螺旋升角的參考取值范圍為9.7°a25.2°,攪拌軸轉(zhuǎn)速的最佳取值范圍:20￡n￡30.95r/min。攪拌長(zhǎng)短臂采用正排列方式,且長(zhǎng)短攪拌臂交錯(cuò)排列,相位角選用90°。3、利用Pro/E軟件建立螺旋帶式TMR飼料攪拌機(jī)的虛擬樣機(jī),通過有限元分析法對(duì)攪拌軸進(jìn)行了靜強(qiáng)度分析,對(duì)整個(gè)螺旋帶式攪拌裝置整體進(jìn)行了模態(tài)分析。4、利用EDEM軟件對(duì)飼料攪拌機(jī)攪拌系統(tǒng)進(jìn)行數(shù)值仿真,對(duì)飼料的運(yùn)動(dòng)軌跡進(jìn)行了分析,得到攪拌顆粒運(yùn)動(dòng)矢量圖,并出現(xiàn)了攪拌低效區(qū);通過混合變異系數(shù)方法對(duì)飼料攪拌均勻度進(jìn)行了分析,得到了當(dāng)前參數(shù)條件下的最佳攪拌時(shí)長(zhǎng)為60s。
[Abstract]:In recent years, with the rapid development of animal husbandry in China, the requirement of feed mixing technology will be higher and higher. According to the actual demand of breeding and the characteristics of feed itself, there are many structural forms of feed mixing equipment, such as vertical, horizontal, pulping and so on. At present, the most widely used is horizontal feed mixer, which is widely praised for its high production efficiency, high working reliability, low price and so on. This paper mainly takes the spiral belt animal feed mixer as the research object, analyzes the feed mixing mechanism of the mixer, analyzes the key structural parameters of the mixer, such as the helical angle, the arrangement of the mixing arm, the rotating speed of the mixing shaft, etc. The virtual prototype model is established, the static strength analysis of the mixing shaft and the modal analysis of the whole mixing device are carried out, and the discrete element numerical simulation of the mixing system is carried out. The movement track and mixing uniformity of feed particles are numerically analyzed. 1. The structure composition and mixing mechanism of mixing equipment are analyzed. The force distribution formula of unit feed particles on X axis and Y axis is obtained respectively. The particle position equation. 2 is deduced, and the structural parameters and working parameters of the main structure of the mixer are studied and analyzed. The basic values of the key parameters are obtained as follows: the volume of the mixing bin is 6 mm3, the maximum diameter of the stirring dragon is 1 867 mm, the reference range of the spiral angle between the bottom spiral blade belt and the wall of the mixing bin is 9.7 擄a 25.2 擄, and the best rotational speed of the mixing shaft is obtained. Range of values: 20n30.95r / min. The long and short stirring arms are arranged in a positive arrangement mode and staggered with a phase angle of 90 擄. The virtual prototype of the screw belt TMR feed mixer is established by using Prop / E software. The static strength of the mixing shaft is analyzed by finite element analysis. The modal analysis of the whole helical belt mixing device was carried out. The numerical simulation of the mixing system of the feed mixer was carried out by using EDEM software, and the moving track of the feed was analyzed, and the vector diagram of the agitating particle motion was obtained. The mixing coefficient of variation was used to analyze the feed mixing evenness, and the optimum stirring time was 60 s under the current conditions.
【學(xué)位授予單位】：安徽農(nóng)業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：S817.12

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