混合设备技术

• 稳定的外观质量令客户满意
7/23/2009
Regular physical quality that make customer satisfaction
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混合的价值
混合的ຫໍສະໝຸດ Baidu值
(Value of grinding)
Value of mixing
=
混合的效用 (Advantanges of mixing) 混合的成本 (Cost of mixing)
t1 t2 t3
W1
t4
2009-7-23
• W1 慢加料重量 [kg] • W2 落差重量 [kg] DEVELOPMENT KNOWLEDGEBASE
AGRO FEEDMILL BUSINESS
time (s)
switch fast/slow pre cut-off weight
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配料过程分析
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配料绞龙
Bin Outlet (Mass Flow)
Screw Feeder
Shroud
(Length = 2 Pitch)
Diamete r 1/3 Pitch
1/2 Pitch
2/3 Pitch
Full Pitch
Discharg e 1/2 Bare Pitch
Full pitch = diameter or less
2009-7-23
KNOWLEDGEBASE DEVELOPMENT AGRO FEEDMILL BUSINESS
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混合的价值
混合的价值
(Value of grinding)
Value of mixing
=
混合的效用 (Advantanges of mixing) 混合的成本 (Cost of mixing)
配料器通常安装在秤斗上面,距地面数米高，故接近较困难。
对配料器的要求: 可靠性高；
safe
Requirements to dosing elements:
High reliability in operation / fail-
High dosing-accuracy / no leakage. 喂料精度高/不漏料； 对于大小颗粒的原料都适合；Suitable for coarse and dribble feeding High degree of sanitation / no residues. 清洁度高/无残留； Easy and simple to operate. 操作方便、简单； Low in maintenance. 维护少。
Installation and adjustment of Load Cell : balance Load Cell Resolution Prevention of noise signal disturb to Load Cell Design of raw material intake to scale Sequence of weighing Frequency of Scale Calibration
Homogeneous
• 使原料充分吸收添加的液体并避免成块 • 在规定的时间内获得稳定的优质产品 • 去处杂质,避免药物残留
Raw material able to absorb adding liquid and do not agglomerate. Get regular quality product within assign time Prevent strange matter and remainder in meat
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2009-7-23
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称重仪表的精度
Weight Indicator Accuracy
称重仪表的精度取决于： Weight Indicator Accuracy depends on :
• 根据传感器选择仪表的型号\规格和信号 • 仪表到传感器的距离不超过设计要求
2009-7-23 KNOWLEDGEBASE DEVELOPMENT AGRO FEEDMILL BUSINESS
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配料过程 Weighing Process
目标 (Target)
• 配料时间
Time per batch
• 配料精度和配比度
Accuracy and precision
2009-7-23
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2009-7-23
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配料器 – 配料绞龙
Dosing Element : Screw feeder
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2009-7-23
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Dosing Element : Micro screw feeder
配料器 : 微量喂料绞龙
2009-7-23
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标准的配料过程
weight speed
r2
W2
P2 target_weight r1
Normal Dosing
P1
v2 speed
weight v1 tara
参数 • P1 快进/慢进转换点 Switch fast/slow [kg] • P2 慢进料停止点 pre cut-off weight [kg] • r1 负偏差 (-) tolerance (-) [kg] • r2 正偏差 (+) tolerance (+) [kg] • t1 慢进料时间 switch time fast/slow • t2 目标称量延迟时间 target dosing time slow • t3 称量后落差时间 settling after dosing • t4 最大称量时间 max. dosing time • v2 快加料速度 dosing speed fast • v1 慢加料速度 dosing speed slow
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Dosing Element : Bin discharge
配料器: 配料盘
2009-7-23
KNOWLEDGEBASE DEVELOPMENT AGRO FEEDMILL BUSINESS
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配料秤的精度
配料秤的精度取决于：
• • • • • • • • 秤斗形状设计
Scale Accuracy
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配料器
Dosing Elements
Dosing elements are usually installed above the scale hoppers and several meters above the ground. Therefore access to them is in most cases difficult.
sec) 秒(sec) (sec)
Scale unit ( su )
称量单位 ( 数值 )
=
配料秤容量(kg) (Scale size in kg) 交/直流转换器量程 (Resolution A/D
converter)
2009-7-23
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Dosing Algorithm
Scale parameter 配料秤参数 数值 - 零偏差 (Zero tolerance) (su)
- 配料时间 (Dosing supervision time) 秒(sec) - 放料时间 (Emptying supervision time) 秒 - 暂停快/慢车 (Pause fast / slow) 秒(sec) 秒(sec) - 稳定时间 (Steadying time) - 清理残留时间(Residual emptying time) 秒 - 启动延迟时间 (Start delay)
混合成本包括
• •
Mixing costs consists of;
Building cost (Devaluation cost, Maintenance cost) Machinery cost (Devaluation cost, Spare parts cost, Consumptive parts)
厂房的投资(折旧)
设备的投资 (折旧,零配件, 物料消耗ั)
• • •
劳务费 Labor cost (Operator cost, Maintenance cost) 电费,燃料费 Energy cost (Electrical cost, Steam produced cost) 其他费用(检验费)
混合的效用 ;如下
Advantages of mixing consist of;
• 达到配方要求的原料配比 Get raw material proportion as required formula • 每批的原料比例相对稳定 Regular raw materials proportion in sample • 满足均匀度
Etc., (QC accessories cost)
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7/23/2009
混合定义
Definition of mixing
在足够的时间和搅动作用下,原料在混合机 内运动使各种原料混合均匀. 每种原料的每一个部分都分散在整个混合 物中,所以在每一处取样都能得到相同的原料 成分。
The movement of raw material inside mixer causes homogeneity when there are sufficient time and turmoil. Each part or each type of raw material will scatter indiscriminately within the whole mass of mixture, in order, every taken samples has same raw material proportionally.
配料仓参数 Bin parameter - 正偏差 positive tolerance su - 负偏差 negative tolerance su - 慢加料点 Fine dosing section su - 落差点 Pre cut-off point su - 重新称量脉冲时间（秒） Redosing pulse length (sec) - 快加料比例 Fast dosing % - 慢加料比例 Fine dosing %
Scale Accuracy depends on :
Design of scale shape
秤斗和传感器的安装 : 均衡和对称 传感器的安装和调整 : 受力均衡 传感器质量 传感器防止受干扰 原料进秤口的设计 配料顺序 校秤频率
Scale and load cell installation : center and symmetrical
混合技术
MIXING TECHNOLOGY
配料 – 搅拌 Proportioning Homogenizing
2009-7-23 KNOWLEDGEBASE DEVELOPMENT AGRO FEEDMILL BUSINESS
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混合技术 Mixing Technology
• 混合的重要性 • 混合定义 • 配料过程 – 配料时间及精度 – 原料配料指标 – 预防性维修 • 混合过程 – 分批混合 – 混合均匀度 – 连续混合 • 混合循环表 • 计算方法 Importance of mixing Definition of mixing Proportioning Process Time and accuracy Raw material proportional indicator Preventive maintenance Homogenizing Process Batch wise Mixing Precision of mixing Continuous Mixing Mixing Cycle Diagram Calculation