共查询到19条相似文献,搜索用时 531 毫秒
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机械化集中挤奶站是我国乳品加工业根据当前奶牛养殖模式(公司 农户)为收集牛奶而产生的,集中挤奶站的出现解决了农民不具备机械化挤奶条件、收购牛奶不集中、鲜奶难储存诸多问题,是一项发展农业经济、支持农民增收的有效措施。 相似文献
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1.挤奶系统通过特定的机械设备产生一系列机械运动,使牛奶从乳房内被吸出来的机械系统称为挤奶机。无论是移动式挤奶机、提桶式挤奶机、管道式以及厅式挤奶机,其核 相似文献
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为了减轻劳动强度,提升耕种收农业机械化综合水平,实现节本增效和可持续发展,葫芦岛市农机总站于2003年开始研制推广2BQF-2型气吸式精量番种机.经过不断改进和完善,到2008年基本上能够满足农艺要求.在此基础上,2009进一步研制开发了2BQF-4型气吸式精量播种机和一次性深施肥技术,使机型及机具性能能够基本适应本地区牛产作业,为广大农民使用先进适用的播种机械提供了新的选择. 相似文献
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《Journal of Agricultural Engineering Research》1999,72(4):341-346
Milking is a very time-consuming task and many dairy farmers increase the number of clusters to increase the milking capacity. However, the introduction of additional clusters only reduces the milking time as long as the milker has idle time during milking. In the present research, the influence of the number of clusters on the milker's idle time was studied by models based on observed working routine, duration of machine milking times and detailed time studies of milking on 13 commercial dairy farms. According to the results obtained, one milker is fully occupied when milking in a stanchion barn with seven automatically removed clusters, and when handling ten clusters in a stanchion barn where the working conditions on milking have been improved by a rail-milking system. If milking is performed in a herringbone milking parlour, one milker is fully occupied when handling 18 clusters. As the optimum number of clusters is very dependent on the milking method and the machine milking time, the investment in new milking equipment should be based on a model calculation using the specific milking conditions for the farm. 相似文献
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活塞式挤奶机工作性能的测试与研究 总被引:2,自引:0,他引:2
利用现代测试技术,分别在空载和带载两种状态下,对奶壁间室的真空度和压力以及气缸球阀的开启和关闭时间等进行了测试,获得了活塞式挤奶机壁间室真空度、压力与真空泵活塞位移的变化规律,并对壁间室真空度和压力的极值进行了研究,这对该类挤奶机的进一步深入研究具有重要作用。 相似文献
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《Journal of Agricultural Engineering Research》1994,57(4):263-267
The milking of animals in automatic milking systems requires the development of sensor-based feedback control. This paper proposes the use of milk flow as a method of monitoring the correct performance of the milking machine and examines the repeatability of this measure through lactation. The milk flow was defined by the let down time (the time from attachment of teat cups until a steady flow of milk begins), the peak flow rate and the stripping time. Peak flow rate was the rate at which the first 75% of milk was extracted. Stripping time was the time to extract the last 25% of milk removed. The milk flow profile of four goats was recorded at morning and evening milking once each week for 30 weeks. The mean let down time was constant throughout lactation at 12·1 s (S.D. 0·45 s), while the mean stripping time was 25·7 s (S.D. 7·76 s) indicating the variability of milk flow towards the end of milking. Peak milk flow for individual animals varied little throughout lactation. A method of deriving peak flow rate automatically was developed and this can be used to check that milking is progressing correctly. 相似文献
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活塞式挤奶机球阀匹配研究 总被引:1,自引:0,他引:1
在带载和空载两种状态下,通过对活塞式挤奶机活塞位移,奶杯壁间室真空度和压力,球阀开启和关闭时刻的测试,分析了奶杯壁间室真空度和压力分别与真空泵活塞位移的变化规律及球阀开启和关闭时间对壁间室真空度和压力的影响;通过分析研究活塞式挤奶机在不同球阀组合情况下的真空度,压力,节拍比,最大和最小真空时相比,最终获得了活塞式挤奶机4组最佳球阀匹配。 相似文献
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