共查询到18条相似文献,搜索用时 234 毫秒
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PVC粒料储运机是皇冠瓶盖自动生产线的配套设备,用来为瓶盖注塑机提供颗粒状塑料原料,也可用于提升粉状物料。该机由储料仓(包括料斗和搅拌器)、提升装置(包括减速器)两大部分组成。 相似文献
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为了能够精确地统计制丝车间烟叶消耗和卷包车间烟丝消耗这一问题 ,设计了料斗式烟丝自动称量装置 ,对其开发设计思路 ,以及基本工作原理和技术特点进行了介绍。该装置采用静态称量方法 ,精度高 ,稳定性好 ,为烟叶和烟丝的成本核算提供了精确的计算数据 相似文献
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本文介绍芦笋装罐前进行的自动称量、加料与分选的软硬件研制。尤其是软件编制的原则,软硬件的配合和实现整机协调工作的方法。可供其他物料(根状、块状、粒状甚至粉状)的自动称量加料与分选的软硬件研制时参考。 相似文献
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将高效的动态传输和高精度的静态称重相结合,开发高效高精度的块状食品称重分选系统。该系统采用传输带完成物料的不间断传输,在称重前将物料依次排成多排,利用多个静态称重传感器依次完成物料间歇的静态称重,并依次落料后进行分类包装,完成静态称重和动态传输相结合的高效高精度的块状食品称重,称重分级的重量可根据实际需要调整,系统每分钟可称重150次,称重精度可达到0.1%,称重误差≤±0.002kg达到称重高精度标准。控制系统采用人机界面(HMI)和PLC相结合的控制方式,操作简便、可靠性强、可视化程度较高,同时带有远程控制接口,能够完成系统的远程监控。 相似文献
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Theo van Kempen Bill Park Mike Hannon Paul Matzat 《Journal of the science of food and agriculture》2001,81(8):726-730
The ability to mix a quality feed is often equated to the quality of the mixer; the ability to weigh ingredients correctly has received little attention. To assess how accurately feed mills weigh their ingredients, 14 feed mills specialising in swine diets were surveyed, which yielded 8432 data points (for 229 ingredients and 11–44 batch records per ingredient within mills). Amounts actually weighed (according to scale readings) were compared to calls, and differences were analysed statistically. Feed mills overdosed ingredients by 1.5 ± 16.3%: between mills, overdosing ranged from ?0.7 to 13.0%. Within ingredients, weighing variation ranged from 0.6 to 11.1% between mills and averaged 5.2%. Some of the weighing problems observed were attributed to discrepancies between the call size and the scale resolution. For example, weighing 11.3 units (pounds) on a scale with a 2 unit resolution leads to a minimum error of 6%. Such problems occurred for 8.7% of the calls and resulted in a minimum error ranging from 0.01 to 20%, averaging 1.95%. Poor choice of scales was the major source of errors in weighing, and the relationship weighing variation = 10∧ [1.56 ? 0.50 log (call/scale resolution)] explained 40% of the variation observed (p < 0.05). Weighing ingredients in the right scale would thus not only benefit feed quality but also reduce diet cost, as it would reduce the overdosing of ingredients. © 2001 Society of Chemical Industry 相似文献
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采用φ5.50 mm C82DA盘条为原料,经过预处理干拉、热处理电镀、湿式拉拔工艺制备φ0.71 mm大规格胶管钢丝。干拉采用5道次拉拔,总压缩率约为70%;热处理电镀Dv值为50 mm·m/min,明火炉4个区的加热温度分别为1 060,1 040,1 020,980℃,单段水浴淬火长度300 cm;电镀采用先镀铜、后镀锌、再进行感应加热热扩散工艺,镀层附着量为4.0 g/kg,镀层中铜质量分数为67.0%;电镀钢丝经轧尖引模机穿模,由55 kW水箱拉丝机拉拔。结果表明,生产的φ0.71 mm胶管钢丝破断力为1 020~1 045 N,弯曲25~39次,扭转37~51次。 相似文献
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称重式振动给料器控制仪表的设计 总被引:1,自引:1,他引:0
在分析称重式振动给料器工作原理的基础上,重点介绍了其控制仪表的设计过程.实际应用表明:该控制仪表具有稳定性好、体积小、可操作性强、性价比高等优点.仪表的各项指标满足国标要求. 相似文献
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针对小颗粒(含粉料)状物料干燥方式简单,热利用率低、获得的物料干制品质量得不到有效保障的问题,利用射频给热技术,设计了针对小颗粒(含粉料)物料中试射频干燥机。该设备由给热系统和输送系统两部分组成,给热系统主要包含射频发生器和翅片加热管,输送系统的主要传送部件为输送带。同时为保证射频干燥的均匀性,设计了物料厚度的限制装置,并以玉米颗粒为试验物料,对所设计的射频干燥机进行物料衡算及能耗分析。结果表明,干燥1 000kg玉米颗粒,平均耗时40.83min,平均干燥能耗4 241.438 9kJ/kg·H2O。该机可以较大幅度地提高热能利用率,保障物料干制品质量。 相似文献