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论述清洁生产原理和在机械零件的清洗工艺中的作用.从清洗方法、清洗设备、清洗液和生产管理方面提出了实施清洁生产的要点. 相似文献
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目前,卷烟企业对香精香料的需求主要有两个特点:一是种类越来越丰富,其次是需求量越来越大。这就导致在烟用香料提取车间内,设备的清洗工作变得越来越繁重。本文针对目前提取车间内的设备清洗需求,设计了一套专用于提取车间的CIP系统。该系统包括:清洗液罐、回收液罐、清洗液加热设备以及上下位机的控制系统。经过使用,该CIP系统能够较好的实现香料提取车间内设备的清洗工作,极大地减轻了人员的劳动强度。 相似文献
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为了实现内燃机专用清洗设备的实时监测与控制,采用了三菱FX2N可编程控制器及其A/D模块作为控制器件,完成了该设备控制系统的硬件和软件设计,实现了对设备作业的自动控制和清洗液温度的控制.实际应用结果表明,该控制系统能准确控制清洗液温度,并提高了作业的质量和效率. 相似文献
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在对农业机械进行维修、保养时,需要对一些零件进行清洗.在通常情况下,清洗金属零件,一般采用煤油、柴油、汽油或金属清洗剂等,但清洗非金属零件,就不能全部使用这些清洗液了,否则,会使有的非金属零件变质或失效.因此,对非金属零件的清洗,应根据材质的不同,确定不同的清洗方法,用不同的清洗液. 相似文献
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In a recent paper, the Ritz method with simple algebraic polynomials as trial functions was used to obtain an eigenvalue equation for the free vibration of a class of homogeneous solids with cavities. The method presented is here extended to the study of a class of non-homogeneous solids, in which each solid is composed of a number of isotropic layers with different material properties. The Cartesian coordinate system is used to describe the geometry of the solid which is modelled by means of a segment bounded by the yz, zx and xy orthogonal coordinate planes and by two curved surfaces which are defined by fairly general polynomial expressions in the coordinates x, y and z. The surface representing the interface between two material layers in the solid is also described by a polynomial expression in the coordinates x, y and z. In order to demonstrate the accuracy of the approach, natural frequencies are given for both a two- and three-layered spherical shell and for a homogeneous hollow cylinder, as computed using the present approach, and are compared with those obtained using an exact solution. Results are then given for a number of two- and three-layered cylinders and, to demonstrate the versatility of the approach, natural frequencies are given for a five-layered cantilevered beam with a central circular hole as well as for a number of composite solids of more general shape. 相似文献
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本文以某些积算和双笔记录仪产品为例说明由于仪表功能设计的不合理或选型不当,影响了仪表的正常使用,制造厂和用户应关注这类问题。 相似文献
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Polyvinyl pyrrolidone-Iodine complex (PVP-I) molecules were impregnated into the anodic oxide of an aluminum disk specimen. It was rubbed against a silicon nitride ball specimen using a ball-on-disk type friction test rig. Over the limited range of parameters studied (load: 0.2-1.0 N, sliding velocity: 0.6 mm/s, and sliding distance: 1-7 m), the coefficient of friction decreased to a value as low as 0.01 from values of 0.3 to 0.7 for the anodic oxide surface. Single-crystal iodine rubbed against silicon nitride showed a coefficient of friction of 0.1. The low coefficient of friction is attributed to the thin PVP-I film on the relatively hard anodic oxide. The mechanism of coefficient of friction reduction is the same as that of a thin soft film on a hard substrate. 相似文献
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针对目前市场对工业设计人才的需求,本文论述了我校在工业设计教育方面的改革措施,着重介绍了我校工业设计教育在软件和硬件方面所进行的一系列的改革。 相似文献
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设计了磨粉机快辊轴承座的加工工艺和具体的工装夹具.利用卧式加工中心加工磨粉机快辊轴承座,辅以能够高效快速夹紧的夹具,既可以保证加工精度,又能够提高加工效率. 相似文献
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The article provides a solution to the problem of contraction process modeling when measuring the flow of fluids and gases using differential pressure flowmeters. The article shows the feasibility of obtaining the coefficient of contraction from the mathematical model of the reduced/contracted flow of fluids or gases. An analytical expression is obtained for the coefficient of contraction, which agrees well with the results of the experiment. Analysis of this expression is performed and dependencies on the geometrical parameters of the pipeline and orifice plate are obtained. 相似文献
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通过分析膨胀套在实际使用产生滑移受阻现象、卡死现象原因的实质,并在分析产生问题原因的基础上提出了改进措施即:增加导向机构。 相似文献