公开(公告)号：US4144804A

公开(公告)日：1979-03-20

申请号：US731467

申请日：1976-10-12

申请人： Michael G. O'Keefe ,  Richard Oberrieth

发明人： Michael G. O'Keefe ,  Richard Oberrieth

IPC分类号： A01J11/10 ,  A23C9/15 ,  A23C9/00 ,  G01N33/06 ,  G05D11/02

CPC分类号： A23C9/1508 ,  A01J11/10 ,  Y10T137/0329 ,  Y10T137/2509 ,  Y10T137/2562

摘要： In a milk processing system wherein heat treated milk is initially separated into high-fat and low-fat milk and subsequently reconstituted by adding a selected proportion of high-fat milk to the low-fat milk, control means are provided for automatically controlling the proportion of high-fat milk mixed with the low-fat milk to provide a milk blend of standardized butterfat content which is then homogenized. The control means includes a photoelectric monitoring system for continuously measuring the butterfat content of a sample of the homogenized milk as the latter flows continuously through the processing system under pressure of the homogenizer in the system. The butterfat content measurement is converted to digital signals which are compared to a pre-set digital signal corresponding to a desired butterfat content level to produce a digital corrective signal which controls a digital valve regulating the proportion of high-fat milk blended with the low-fat milk in the processing system. Means are also provided for calibrating the control means at selected intervals to adjust the pre-set digital signal therein to correspond precisely to the desired butterfat content level.

摘要翻译： 在牛奶加工系统中，其中热处理的牛奶最初分离成高脂肪和低脂奶，并随后通过向低脂牛奶中加入选定比例的高脂奶而重新配制，提供控制装置以自动控制比例 的高脂牛奶与低脂牛奶混合，以提供标准化的奶油含量的牛奶混合物，然后将其均化。 控制装置包括一个光电监测系统，用于连续地测量均质牛奶样品的脂肪含量，当该均匀乳在系统中的均化器的压力下连续流过处理系统时。 将乳脂肪含量测量值转换为数字信号，该数字信号与预期的奶脂含量水平相对应的预设数字信号进行比较，以产生数字校正信号，该数字校正信号控制数字阀，其调节与低脂奶粉混合的高脂奶的比例， 肥牛奶在加工系统中。 还提供了用于以选定间隔校准控制装置以调节其中的预设数字信号以精确地对应于所需的奶油含量水平的装置。