大胎胎面排气装置

针对大胎经常出现窝气，胎肩、胎面剥离或鼓泡现象，在大胎胎面复合线上加装排气装置（安装在三辊压延机后）．该排气装置主要由千层辊和排气辊组成，使用后效果较为理想。本文介绍了排气装置的结构组成、工作原理及试制过程等。     

排气装置及轮胎模具

正授权公告号:CN 110027138B授权公告日:2019年12月13日专利权人:山东豪迈机械科技股份有限公司发明人:张伟、王万里、杜平等本发明提供了一种排气装置及轮胎模具。排气装置包括:芯轴和套设芯轴的套壳,套壳与芯轴之间形成排气通道;芯轴包括轴体,轴体的一端连接轴头,轴体的另一端连接轴端件,轴端件设有通槽,通槽贯通轴端件,且通槽背离轴头的一端封闭;轴端件用于对轴体轴向限位,且轴端件还用于通过收缩及回弹以装配套壳和芯轴。本发明提供的排气装置缓解了现有技术中芯轴关闭行程精度低,芯轴牢固度差、易断裂等问题,且可以避免排气通道阻塞。     

一种自控排气装置及轮胎模具

正本发明公开了一种自控排气装置及轮胎模具,它属于模具排气技术领域,包括套壳和密封柱,套壳中间设有通孔,通孔一端设有探测装置,通孔另一端与密封柱配合,密封柱另一端设有驱动密封柱封堵通孔的驱动装置,驱动装置固定在套壳上;一种自控排气轮胎模具,包括如上述的自控排气装置、花纹块和侧板,花纹块和侧板内设有排气通道,排气通道包括排气孔和排气腔室,排气腔室内固定连     

精密测量火炸药及相关物密度的研究——密度瓶法

介绍一种液、固二用的密度瓶和玻璃真空排气装置。研究考察了影响密度测定值的各种因素,液体密度经空气浮力修正和丙酮脱水,偏差只有0.0001g/cm~3;固体火炸药密度经真空排气和浮力修正,精密度提高到0.1%。     

同向啮合型双螺杆挤压机挤出中的排气探讨

介绍了CMP230X-12AW型同向啮合双螺杆挤压机在挤出中的排气现状,讨论了在开发高档无纺布专用料时提高排气效率的可行办法。挤压机加装排气装置后排气效果良好,达到了预期目的。     

POY细旦丝上油均匀性的改进

通过油剂调配、输送的工艺优化和设备改造,提高POY上油均匀性。结果表明:通过调配槽的改造,提高了调配油剂乳化均匀性和缩短搅拌时间到30 min左右;通过特殊的高点排气装置,消除气泡引起的POY上油不均和油剂腐败引起的输送不畅。     

精密测量火炸药及相关物密度的研究:密度瓶法

介绍一种液、固二用的密度瓶和玻璃真空排气装置.研究考察了影响密度测定值的各种因素,液体密度经空气浮力修正和丙酮脱水,偏差只有0.0001g/cm~3;固体火炸药密度经真空排气和浮力修正,精密度提高到0.1%.     

SHJ型双螺杆挤压机的结构及其特点剖析

通过对双螺杆挤压机与单螺杆挤压机进行比较,着重介绍了SHJ啮合同向型双螺杆挤压机配套螺杆、机筒、传动系统及控制系统的结构特点;指出SHJ型双螺杆挤压机与单螺杆挤压机相比具有很好的混炼、输送、自洁性能,单位产量耗能低的特点;SHJ双螺杆挤压机设有真空排气装置、液压换网装置等,运转平稳、安全可靠。     

排气装置

一种生产时避免轮胎上出现胶柱现象的排气装置。一个圆柱状的管套内设置有活动杆，管套与活动杆之间的空腔部位有弹簧，活动杆两端头之间的杆身长度大于管套内腔的长度，活动杆的两端有杆头，将活动杆的杆身限定在管套内。使用时排气装置嵌入轮胎模具上用于透气的细长孔内，当该装置未受到轮胎橡胶挤压时，空气可从装置中的通路中溢出。本实用新型具备透气基本功能的同时，又能杜绝“小辫子”即胶柱现象的出现，降低了生产成本（专利号ZL200620072521．9）。     

优质研磨机

德国Pallmann公司新生产了一种用于对滚塑级聚合物粉料进行预处理的聚合物研磨机，该机的商品名为PKM600。这种结构设计更紧凑合理的设备具有的优点是：喂料及操作简单、安装简单方便、可快速更换物料、专为加工热敏性材料设计装配了更强有力的电动机和优化式排气装置以达到更好的研磨效果。     

关键运行参数对柴油机SCR系统性能的影响

建立了柴油机选择性催化还原SCR系统的仿真模型,提出了尿素分解效率的概念。研究了排气温度、NH₃存储量、NO₂/NO_x、NH₃/NO_x等关键运行参数对NO_x转化率的影响。研究结果表明,随着排气流速的减小和排气温度的增加,尿素分解效率总体呈升高趋势。进行了不同温度下NO_x转化率的评价试验研究,仿真结果和试验结果吻合良好。随NH₃存储量的增加,NO_x转化率呈上升趋势。随排气温度的升高,NO_x转化率持续上升,当温度超过某一值后趋于稳定。随NO₂/NO_x的增加,NO_x转化率逐渐上升,当NO₂/NO_x超过50%后,NO_x转化率则有所下降;NO_x转化率随NH₃/NO_x的增大而上升,当排气温度较高时,其影响较为明显。     

几种新型的汽车尾气净化催化剂

本文主要针对汽车尾气所造成的环境污染问题,分析了开发和应用新型的汽车尾气净化催化剂的必要性和迫切性.着重介绍了几种新型的汽车尾气净化催化剂,讲述了它们各自的特点、催化原理、研究情况以及多种条件下的最佳反应.     

住宅厨房排烟的共用竖烟道的设计方法改进

分析了现代住宅厨房采用共用竖烟道排烟系统的运行特点:排烟动力主要来源于排油烟机提供的风压,热压的作用很小;提出了住宅厨房集中排烟系统"控制最小排烟量"的设计方法。该方法是将排烟系统中最小排烟量确定为某数值,通过求解非线性方程组确定竖烟道截面积。"控制最小排烟量"的设计方法能客观地反映集中排烟系统的运行特点,确保排烟系统中每户厨房排烟均达到要求。此方法在江苏省住宅厨房集中排烟系统建筑图集新标准的制订中得到应用。     

Combined Impingement and Through Air Drying of Paper

For this combined drying process the fundamental characteristics were determined using a unique facility in which air convection drying of paper could be investigated over the full range from pure impingement to pure through drying. As well as light weight paper the program tested heavier sheets, of printing paper grammage, which are not currenfly dried industrially by either impingement air or through air drying.

Analysis is complicated by the two component processes becoming nonadiabatic when carried out simulianeously. Relative to pure impingement drying, for the combined process the water removal rates in the impingement exhaust are sensitively reduced by through flow. Through flow exhaust water removal rate curves are strikingly different from pure through air drying by the addition of a new rate period, termed the secondary increasing rate period, when the paper temperature is driven up by the falling rate period of impingement water removal. Parameters of the models for the combined process were related to     

三氯异氰尿酸生产过程中氯气尾气处理新工艺

介绍了一种三氯异氰尿酸生产过程中氯气尾气处理新工艺,对目前的研究现状进行了综合比较,表明该工艺在可以有效回收利用氯气尾气,并且可以保证氯气尾气的达标排放。     

新型热法磷酸燃磷塔传热分析与计算

在介绍新型燃磷塔结构的基础上,提出了计算其理论燃烧温度和烟气排放温度的工程方法。同时分析了燃磷量、过剩空气系数及燃磷塔结构型式等因素对其传热特性的影响。结果表明,在空气过剩系数或空气量不变时,最高燃烧温度和烟气排放温度随燃磷量增加呈单调递增趋势;而在燃磷量一定时,过剩空气系数越大,最高燃烧温度越低,烟气排放温度越高。     

碱洗工艺处理三氯乙醛氯化尾气的探讨

比较了三氯乙醛尾气治理的石灰吸收及氢氧化钠水洗处理工艺,认为氢氧化钠水洗法处理效果良好,无三废产生,是一个经济合理、节能清洁的处理三氯乙醛生产尾气的方法。     

Effect of Acoustic Radiation on DMA Resolution

Acoustic waves produced by pressure fluctuations in the turbulent exhaust region of differential mobility analyzers (DMAs) are radiated upstream, making the flow in the working region slightly unsteady and reducing DMA resolution. This claim is demonstrated in a variety of settings. First, a resonance has been observed in several DMAs where the resolution decreases drastically in a narrow range of flow rates. This resonance can only be acoustic, and must be excited by flow unsteadiness, which is only present downstream. Second, non-idealities observed in two very different DMAs are suppressed when they are operated under transonic conditions. This is consistent with the inability of acoustic waves to propagate upstream against a supersonic flow. Third, these non-idealities decrease when the turbulent exhaust region from which acoustic radiation would originate is not in direct sight with the DMA's working section. These findings suggest new strategies to achieve DMA resolving powers approaching 100 under subsonic conditions.     

系统瓦斯组成发生变化后预防腐蚀应对措施

总结了进入系统管网瓦斯的组成发生变化时,加热炉配置有余热回收系统启动应对措施以避免腐蚀对加热炉带来的伤害技术,重点介绍了当瓦斯中二氧化硫的质量分数超过100 mg/m^3以下时,将加热炉排烟温度控制在155℃以上;超过100 mg/m^3以上时,将加热炉排烟温度控制在175℃以上,同时满足环保及防腐要求的经验,仅供参考。     

Drying Technologies of Foods -Their History and Future

ABSTRACT

For this combined drying process the fundamental characteristics were determined using a unique facility in which air convection drying of paper could be investigated over the full range from pure impingement to pure through drying. As well as light weight paper the program tested heavier sheets, of printing paper grammage, which are not currenfly dried industrially by either impingement air or through air drying.

Analysis is complicated by the two component processes becoming nonadiabatic when carried out simulianeously. Relative to pure impingement drying, for the combined process the water removal rates in the impingement exhaust are sensitively reduced by through flow. Through flow exhaust water removal rate curves are strikingly different from pure through air drying by the addition of a new rate period, termed the secondary increasing rate period, when the paper temperature is driven up by the falling rate period of impingement water removal. Parameters of the models for the combined process were related to