Contrast Test on Determination Methods for Mixing Uniformity of Fully Mixed Ration Preparation Machine
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摘要:
分析全混合日粮制备机混合均匀度传统测定方法的优缺点,结合反刍动物饲养学对全混合日粮的要求,创新提出采用分级筛测定混合均匀度的方法,并在同等条件下用两种测定方法针对好、一般、差3个档次的全混合日粮制备机进行混合均匀度测试。结果表明,筛分法第2、3层筛上物的混合均匀度能较好地代表全混合日粮制备机的作业性能质量。该方法强化了全混合日粮制备机混合均匀度数据得出的合理性,帮助生产企业、使用人员很好地分辨机具的作业质量,为产品升级、用户购机提供参考。
Abstract:Advantages and disadvantages of traditional determination method for mixing uniformity of fully mixed ration preparation machine were analyzed.Combined with requirements of ruminant feeding science on fully mixed diet, method of measuring mixing uniformity by using grading screen was proposed.Under the same conditions, two methods were used to test mixing uniformity of three grades of fully mixed ration preparation machine, such as good, average and poor. Results showed that mixing uniformity of the second and third layers of screening method could better represent operational performance and quality of fully mixed ration preparation machine.This method strengthened rationality of mixing uniformity data of fully mixed ration preparation machine, helped production enterprises and users to distinguish operation quality of fully mixed ration preparation machine, and provided reference for product upgrading and user purchase.
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Keywords:
- fully mixed diet /
- preparation machine /
- mixing uniformity /
- determination method /
- grading screen
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表 1 测试机型及测试条件
Table 1. Test model and test conditions
机型 饲料制备作业质量等级 测试地点 最小作业时间/min 物料配比 卧式7 m3单绞龙【1】 好(1+好) 河南 8 青黄贮:60.2%;干草:18.8%;预混饲料:15%;标示物:6%;总含水率:43.6%;填充系数:70% 中(1+中) 河北 12 差(1+差) 山东 10 卧式12 m3双绞龙【2】 好(2+好) 河南 10 青黄贮:59%;干草:19%;预混饲料:17%;标示物:5%;总含水率:42.9%; 填充系数:70% 中(2+中) 河北 12 差(2+差) 山东 12 立式12 m3单绞龙【3】 好(3+好) 河南 13 青黄贮:59%;干草:19%;预混饲料:17%;标示物:5%;总含水率:40.8%; 填充系数:70% 中(3+中) 河北 15 差(3+差) 山东 16 备注 1. 机型栏中“【】”内数字为机型代号,饲料制备作业质量“好”“中”“差”分别代表饲料制备作业质量好、一般、差3个档次。
2. 饲料制备作业质量等级项目栏“()”内为样机编号,编号规则为“机型代号+饲料制备作业质量等级代号”,如“1+中”表示卧式7 m³单绞龙全混合日粮制备机切碎混合效果一般的产品测试数据。表 2 混合均匀度结果数据
Table 2. Result data of mixing uniformity
单位:% 样机编号 TMR筛分法 传统方法 第1层 第2层 第3层 第4层 1+好 88.8 94.0 92.5 85.6 90.4 1+中 83.9 89.8 89.9 96.1 92.1 1+差 95.2 84.0 85.9 90.7 91.0 2+好 93.7 93.6 94.0 87.8 89.0 2+中 87.0 90.1 88.0 97.5 89.9 2+差 82.2 83.1 85.3 83.4 86.3 3+好 85.5 96.2 95.8 83.6 85.7 3+中 81.6 92.2 93.0 84.2 86.7 3+差 93.4 87.3 87.9 86.0 87.4 注:计算数据小数点后保留1位,只舍不进。 表 3 TMR筛分法筛上物占比结果与传统方法筛下物折算后质量
Table 3. Ratio of upper sieve of TMR screening method and mass of lower sieve of traditional method after conversion
TMR筛分法筛上物占比/% 传统方法筛下物折算成300 g原始物料后质量/g 样品编号 第2层 第3层 第1次 第2次 第3次 第1次 第2次 第3次 第1次 第2次 第3次 1+好 1 33.09 30.29 30.28 36.08 32.01 33.69 25.67 32.62 32.68 2 31.15 31.88 32.28 31.50 29.29 34.22 29.00 33.17 31.99 3 36.75 33.90 36.00 37.26 32.21 34.61 24.39 30.08 27.89 4 30.98 34.52 34.08 32.66 35.99 36.89 26.87 30.80 29.51 5 32.10 35.81 30.22 30.27 36.89 31.07 24.68 32.10 33.07 6 34.03 30.28 33.28 35.08 32.32 32.88 27.38 25.19 28.50 7 33.29 33.17 31.98 34.05 31.08 28.86 32.87 22.37 29.67 8 31.86 37.29 30.76 36.33 33.89 36.81 24.19 28.63 32.07 9 32.22 33.10 33.16 36.64 30.21 32.49 26.07 27.81 27.90 10 33.08 32.22 30.39 31.98 35.38 31.87 26.66 32.32 28.03 混合均匀度平均值 94.90 93.20 94.00 92.80 92.30 92.50 90.20 87.90 93.00 94.00 92.50 90.40 2+好 1 29.92 32.55 32.89 28.99 31.08 31.39 16.79 21.74 22.55 2 32.01 33.68 30.69 34.66 33.67 32.06 19.03 20.65 23.51 3 33.71 30.25 33.78 32.38 33.09 33.01 17.98 17.99 20.18 4 31.88 33.56 36.59 35.62 32.55 32.01 22.53 18.48 18.69 5 31.88 37.23 33.82 30.98 35.99 33.06 19.06 17.92 16.26 6 30.62 30.28 32.09 33.01 34.47 34.65 18.99 18.00 19.37 7 32.59 35.29 32.81 33.82 33.01 34.07 17.13 16.83 21.71 8 31.27 34.02 35.61 35.72 34.78 35.26 19.59 23.12 18.48 9 36.30 35.12 33.10 36.83 35.77 36.59 20.88 15.03 18.55 10 28.29 34.99 30.39 35.21 35.99 37.01 17.69 18.51 19.25 混合均匀度平均值 93.20 93.40 94.10 92.80 95.10 94.20 90.70 87.30 89.00 93.60 94.00 89.00 3+好 1 33.89 35.88 32.55 34.67 33.49 34.21 28.52 37.82 25.63 2 35.09 36.17 34.66 33.28 34.66 35.75 30.31 27.43 23.69 3 30.55 35.02 33.91 38.51 32.53 36.79 24.67 35.51 30.76 4 32.58 34.69 33.00 36.26 35.51 36.52 28.96 24.18 33.52 5 35.61 33.85 32.65 33.68 36.09 37.13 35.65 34.53 31.64 6 34.64 34.61 32.09 35.52 35.67 36.89 35.30 23.51 26.52 7 33.59 35.29 35.61 37.89 36.76 34.21 35.32 29.54 35.64 8 32.78 33.52 34.71 38.52 35.00 34.22 27.99 32.30 31.98 9 31.99 33.66 32.86 35.66 36.02 36.84 30.51 35.68 25.57 10 34.62 32.83 33.08 34.27 35.72 35.99 26.79 26.80 30.00 混合均匀度平均值 95.30 96.80 96.50 94.50 96.30 96.60 87.30 83.20 86.60 96.20 95.80 85.70 表 4 时间延长1倍后混合均匀度结果数据
Table 4. Result data of mixing uniformity after doubling time
单位:% 样机编号 TMR筛分法 传统方法 第1层 第2层 第3层 第4层 1+好 93.5 95.0 96.0 88.6 95.5 1+中 95.1 93.8 92.9 89.2 94.8 1+差 90.0 91.0 92.0 90.7 94.8 2+好 96.2 96.8 95.0 95.6 92.1 2+中 95.8 92.0 89.5 95.0 91.9 2+差 91.0 92.0 89.9 88.2 89.0 3+好 94.2 95.8 96.8 90.1 89.1 3+中 92.9 94.6 93.6 94.8 90.7 3+差 95.0 93.3 90.9 86.1 93.4 -
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