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为了实现强酸碱等高腐蚀性化工物料的全自动化包装。设计了一种能适应各种强酸强碱性化工物料全自动包装的生产线,包括自动卸盖机、六头自动灌装机、自动旋盖机、称重复检机、贴标机、机器人码垛机、自动捆扎机,灌装机凡是与灌装物料接触的器件全部采用耐腐蚀的非金属高分子材料,适用任何具有腐蚀性的工业物料,卸盖、旋盖机采用伺服电机加三维移动平台技术,实现高速度、高成功率的卸盖和旋盖,码垛机采用高性能机器人完成码垛。该自动生产线对腐蚀性液体具备高速度、高精度、高自动化的包装能力,在实际应用中取得了较好的使用效果。 相似文献
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一种利用玉米、高梁、小麦、大米、糯米、红薯、水果等含有淀粉、糖分的作物为原料或直接利用食用酒精、白酒以及蒸过酒的下角料酒糟液变废为宝,快速高产酿醋新技术及 HY全自动酿醋新设备,在河南省科学院地理研究所海洋公司研制成功,并已批量投入生产。该设备采用全自动电脑监控器及全不锈钢机体精制而成,全自动监控器具有温控、时控双重自动监控的功能,当原料投入酿醋机内后,全自动电脑监控器即开始自动监控发酵过程, 24h后自动转化成醋。利用该技术设备生产的香醋目前已通过国家轻工局食品质量监督检测,各项指标均优于国家标准,… 相似文献
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本文介绍了全自动包装码垛生产线工艺流程,设计了以日本三菱公司的FX2N-32MR型PLC为基础的自动包装称重控制系统,重点介绍了控制系统的硬件配置、输入输出点分配和软件设计。 相似文献
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比较高效液相色谱-紫外检测法(HPLC-UV)、高效液相色谱-示差折光检测法(HPLC-RI)、高效液相色谱-蒸发光散射检测法(HPLC-ELSD)测定乳浊液中单甘酯的含量。结果表明:UV法检测单甘酯,杂质干扰严重,样品信号不强,灵敏度低;RI法只有在较高的质量浓度范围内才有较好的线性关系,不适合用于检测较低质量浓度的单甘酯;ELSD法检测单甘酯含量,单甘酯质量浓度在0.040~5.000mg/mL范围内有良好的线性关系,R2为0.9998,样品回收率达到92.94%,相对标准偏差为2.24%,变异系数为2.41%。HPLC-ELSD法灵敏,准确,重复性好,可用于乳浊液中单甘酯含量的测定。 相似文献
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As food of animal and plant origin is prone to microbial spoilage, its production must be monitored and conducted safely to avoid consumer hazards. At the same time, environmental and sustainability aspects are becoming increasingly important. In this study, washing of food conveyor belts at ambient temperature was performed with plasma-processed water (PPW) and an optical detector to monitor the cleaning success. The microbial plate counts could be reduced with pressurized water, foam and PPW by >3 log10 CFU/cm2, similar to the standard industrial washing with amine-based disinfectant (Neoseptal®, Dr. Weigert, Germany). However, PPW degrades to naturally occurring substances, and the inactivation time was reduced from 15 to 1 min. The optical detector could mostly distinguish between uncleaned and cleaned belts. The fast, precise and easy applicable measurement could be integrated into the production line for automated monitoring, which could result in cleaning cycles based on demand.Industrial relevanceAn on-demand cleaning process with less need for chemicals would save time and money plus protect the environment. Plasma-processed water is as effective as a chemical disinfectant combined with a reduced decontamination time (from 15 to 1 min) and free of complex chemical compounds. The optical detector can be used inline, fast and easy for automated hygiene monitoring in the food production. 相似文献
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Effect of Chlorophenoxyacetic Acid Growth-Regulator Sprays on Residues in Canned Apricots and Grapes
SUMMARY— A, gas-liquid chromatographic method coupled with an electron capture detector has been developed for analyzing chlorinated phenoxyacetic acid residues in canned fruits. The technique involves converting the acid to its methyl ester with diazomethane, chromatography on a 5% silicone grease SE-30 column at 210°C, and subsequent detection of the compound by an electron capture detector. As low as 0.02 ppm of the residue could be detected. The method is superior to the calorimetric method because parachlorophenoxyacetic acid (PCPA), 2,4-D, and 2,4,5-T can be separated and quantitatively determined simultaneously. However, separate standard curves are needed for each, because they differ in chlorine content and in sensitivity toward the electron capture detector. Levels of 2,4-D and 2,4,5-T residues in canned apricots, and of PCPA in canned grapes are reported. 相似文献
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目的建立气相色谱法测定调和油中18种脂肪酸的方法。方法样品经过氢氧化钾甲醇溶液甲酯化,采用毛细管色谱柱(100 mm×0.25 mm, 0.2μm)和程序升温模式进行测定,检测器温度为280℃。结果 18种脂肪酸的线性关系良好(r>0.999),检出限为0.0005~0.009mg/kg,回收率为78.9%~99.1%,相对标准偏差(relative standard deviation, RSD)为0.768%~8.236%。结论该方法快速、简单、回收率和精密度良好,可用于调和油中脂肪酸的的检测。 相似文献
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柱切换高效液相色谱法及其在食品检验中的应用 总被引:1,自引:0,他引:1
柱切换是指利用多通路切换阀改变进样阀与色谱柱、色谱柱与色谱柱、色谱柱与检测器之间的连接关系的技术。对于样品中多组分待测物的净化和分离分析,柱切换高效液相色谱法是有效的分析方法。样品前处理后进样,待测物可在线进行富集、净化、衍生化等,从而减少有机溶剂的用量、提高回收率、降低检出限和定量限。由此综述柱切换的原理和装置,在食品中农药残留检测、兽药残留检测、食品成分分析和其它成分的应用,以及存在的问题。 相似文献
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用于农残快速检测的离心式微流控芯片研制 总被引:2,自引:0,他引:2
基于酶抑制原理结合光度分析方法,研制一种预存储生化试剂的离心式微流控芯片。设计制作的一次性微流控CD芯片集成进样、酶抑制反应、显色反应及检测单元,结合自行研制的便携式分析装置,可以同时检测12个样品,能够实现对大批量农产品中有机磷和氨基甲酸酯类农药残留进行现场、快速、高通量检测。结果表明:与传统农残快速测定仪比较,微流控芯片农残速测系统操作单元集成度高,可以实现农残检测流程的自动化,样品及试剂消耗量降至传统速测方法的约1/20,同时检测灵敏度、重复性和准确性整体优于传统农残快速测定仪,可以满足基层非专业人员针对大批量样品农药残留的筛查需求。 相似文献
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Two computed tomography scanners have been used to acquire density profiles from five wooden test pieces. These test pieces had annual growth ring widths varying between about 0.6 mm and 3.5 mm. The two scanners employed were a medical scanner, a GE 9800 Quick scan system, and a purpose built microscanner constructed around a Rigaku D-Max II diffractometer. The results demonstrated that the annual growth rings could be resolved and density measurements could be reliably determined using the microscanner when the annual growth rings were about 0.9 mm or greater in width. The medical scanner could not satisfactorily measure density in carlywood or latewood resions even in samples where the annual growth ring width was of the order of 3.5 mm. A small difference in density measurements could be observed between the two scanners for the same specimens. The difference is attributed to calibration differences, the reconstruction algorithms used and the different geometries of the two systems; particularly in relation to the detector apertures. The larger detector size in the medical system results in too high or too low density values in the carlywood or the latewood respectively due to spatial averaging. However, the medical scanner provides satisfactory density accuracy in specimens where the density is very uniform or as long as measured areas include both carlywood and latewood. An accuracy of ±2–6 kg/m3 at 95% confidence level can then be expected. 相似文献