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padding: 0px; width: 100%; height: 800px"></div> <script type="text/javascript"> $('#SwfDocumentViewer').FlexPaperViewer({ config: { SWFFile: '', Scale: 0.6, ZoomTransition: 'easeOut', ZoomTime: 0.5, ZoomInterval: 0.1, FitPageOnLoad: false, FitWidthOnLoad: true, FullScreenAsMaxWindow: false, ProgressiveLoading: false, MinZoomSize: 0.2, MaxZoomSize: 5, SearchMatchAll: true, InitViewMode: '', RenderingOrder: 'flash,html', StartAtPage: '', ViewModeToolsVisible: true, ZoomToolsVisible: true, NavToolsVisible: true, CursorToolsVisible: true, SearchToolsVisible: true, WMode: 'transparent', localeChain: 'en_US' } }); </script> </div> <script type="text/javascript"> var swfurl = document.getElementById("SwfFileUrl").innerHTML.toString().trim(); if (swfurl === "") { document.getElementById("ShowSwfDiv").innerHTML = ""; } </script> <div> <p> </p> <p align="left"> </p> <p> </p> <p> </p> <p> </p> <p>前言</p> <p>随着我国l济的大力发展,矿山数量和矿p模也在不断增多增大。当前各cȝq选厂Q都设有矿粉储存仓。矿_进入料仓后Q由于矿石中含水隙、含化物,长时间不动{因素的l合作用QŞ成物料粘壁堵塞,造成中{仓有料出不来Q后l生产无原料的现象;目前常用的办法是Qh工在矿仓出料口处手持铁棍捅料、或者局部放炮的方式Q十分危险,Ҏ发生人员伤亡事故。我院自ȝ发的料仓清塞pȝQ已l在多家矿山公司的现场实C用,取得了很好的使用效果?/p> <p>一、系l原理及架构</p> <p>1、原?/p> <p>清塞pȝ是以H然喷出的压~空气所产生的强大气(臛_5kg以上Q,直接冲入贮存散装物料的阻塞滞留区域,由气体急剧膨胀所产生的能量克服物料因静摩擦而Ş成的h或粘壁,使仓内物料恢复重力流动或使管道lv到输送物料的作用Q保证生产的q箋性。系l通过降低物料同仓壁之间的摩擦力来解决物料_壁和物料阻塞问题,利用机械振动和气冲散物料破坏拱的受力^衡?</p> <p>2、特?/p> <p>Q?Q低能耗:清塞pȝ是间歇工作,每次释放的压~气总量?/p> <p>Q?Q低噪音Q间歇性工作,压羃I气释放的声韛_乎被物料全吸收?/p> <p>Q?Q大能量Q利用贮气罐中的高压气体Q以H然爆发所产生的气冲d?/p> <p>Q?Q高效:针对Ҏh、积料的部位讄Q直接作用于物料Q清堉|果好?/p> <p>Q?Q安全:每次使用的空气量有限Q不会对仓壁和管道等构筑物生共振和冲击?/p> <p>3、安?/p> <p>  Q?Q清塞系l的冲击孔安装在料仓易被d的部位,Ҏ现场实际工况和棚料的情况Q分别布讑֤层气孔(铜山矿目前布?层,如果效果不理解,可以再增?层)。整个管道架讑ֈ左右l构Q分别由左边气源、右Ҏ源控制。左气源控制左侧的一、二、三、四层冲ȝ路,x源控制右侧的一、二、三、四层。在每层的同{高度上间隔布设多个孔,孔的深度一直g伸到料仓堆料接触面。将每层同一高度处打的冲dQ用道串联hQ集中由该层的蝶阀控制q气总量和进气冲L_其它各层的连接方式相同?/p> <p>  Q?Q安装时清塞pȝ排气(仓内部分Q朝下布|,清塞pȝ喷射与排气口连接不讄弯头、弯,直线q接Q电阀安装在紧靠气~进口的q气上?/p> <p>  Q?Q清塞系l排水塞朝下Q便于排水。单向阀、球阀安装在便于操作的位置Q太高太?span style="color: rgb(0, 0, 0); font-family: 宋体; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;">都不利于操作修?/span><span style="font-size: 9pt;"> </span></p> <p style="text-align: center;"> <img id="囄 7" src="/ewebeditor/uploadfile/20180921103001904001.jpg" alt="00" style="font-size: 9pt; width: 300px; height: 219px;"><img id="囄 10" src="/ewebeditor/uploadfile/20180921103001113002.jpg" alt="06" style="font-size: 9pt; width: 350px; height: 196px;"><span style="font-size: 9pt;"> </span></p> <p style="text-align: center;"> Q现场布和甉|原理图)</p> <p>二、电气控?/p> <p>1、硬件设?/p> <p>   每个料仓Ҏ堵塞情况Q铺讑ֆȝ的层数区别对待,通常情况下,讑ַ叛_四层圈动冲击Q堆U严重的仓需要额外增加一层气动冲ȝ。通常需要八个电阀来控制各自的q气点,在左叛_的总进气管路上有独立的分控开养I控制导通或关闭。在储气|的出气道中安装有压力表,变送给PLC实施监测压力范围正常与否。现Z要设备有I气压羃机、电阀门、压力监A表、操作箱{。现场操作箱主要支持本地功能Q当现场人员需要就地操作时Q可以用手动方式,现场直接按按钮清堵,子内部元器件有按钮、电器、{换开兟뀁{换器、A表、西门子PLC、西门子触摸屏等?/p> <p>2、操作方?/p> <p>下面以铜q的用操作ؓ例作介绍Q?/p> <p>首先?20V~工业用电接入到操作箱中,Ҏq程q控强늚原理Q将电压转换?4V直流电压Q驱动现场的气动阀。操作箱面板上每个按钮对应一路独立的气动阀?/p> <p>Q?Q本地操作:直接在操作箱按动相应的按钮,使气路导通,吹击堆积料?/p> <p>当“手自动切换按钮”置于手动方位时Q由本地操作控制现场的讑֤通断。操作顺序是Q先左x制回路的开兛_别打开Q左右路的气源导通,然后ҎҎ需要,不断按下对应\的启动按钮,׃而上逐个打开气动阀门。左一层至左五层的按钮Q右一层至右五层的按钮Q输Z?U左右的旉Q当“手自动切换按钮”置于自动方位时Q由q程PLC控制?/p> <p>Q?Q远E操作:在远端调度室布置有一块西门子的触摸屏Q通过以太|的方式和远端的襉K子PLC-200通信?/p> <p>依照真实的安装情况,画面中分别有独立的按钮和Ҏ阀指示Q既可以模拟操作手动操作,也可以通过画面上的“手自动切换软开关”,实现无h员在场时的自动清塞作业?/p> <p>当置于自动状态时Q这时程序自动打开左右分管路的气阀Q让气源通过来,然后同时打开左右同层的电阀Qƈ保持输出状?U(旉可调Q,{该层全部孔冲击l束后,间隔4分钟Q时间可调)Q逐步打开左右同层的电阀Q以此类推,直至左右五层都冲d毕,形成一个@环。这时又q入下一个工作@环,重新开始、自下往上的Ҏ?/p> <p>最后一步和开始之间的间隔旉可以在画面上修改Q参考条件是Q空压机的工作效率和功率大小Q以及冲L孔时对压力高低的要求Q保证气压的正常供给。这个设定时间长短需要现场多ơ试验摸索,才能得出一个比较合理的范围。另外需要将料仓的前l料皮带的电子称重量、料仓的后出料皮带的电子U重量分别通讯到控制室中,先进仪表再反馈给PLCQ监设备工作情c?/p> <p> </p> <p>如果出现前皮带给料正常,后皮带无重量昄Q出现断料(认ؓ堵仓Q,仪表l出开关量信号lPLC识别Q程序发出声光报警,通知现场人员ȝ场核实情况;</p> <p>‚将该两条皮带的q行信号反馈lPLC识别Q监督设备工作状态。在生q程中如果出现给料皮带工作正怽是出料皮带停止,立即发出声光报警Q通知现场人员紧急处理?/p> <p>多种现场真实模拟量信号采集和讑֤工作状态的监测Qƈ作出相对应的预警处理方式Q大大降低了操作人员和E工h的劳动强度,有效的提高了生q程中的人员机动性,提高效率?/p> <p>                              </p> <p>                      <img id="囄 15" src="/ewebeditor/uploadfile/20180921103001431004.jpg" alt="01" style="font-size: 9pt; width: 300px; height: 211px;"><img id="囄 17" src="/ewebeditor/uploadfile/20180921103001618003.jpg" alt="02" style="font-size: 9pt; width: 300px; height: 225px;"></p> <p style="text-align: center;"><span style="font-size: 9pt;">Q远EY件操作界</span><span style="font-size: 9pt;">面图Q?/span></p> <p>                                               </p> <p> l束?/p> <p align="left">        料仓cM的清理方法很多,但是马矿院研制的该套清塞pȝ在内部设计、管路结构和控制Ҏ{多个方面加以整合和改进后,气锤冲击效果明显、下料清堉|l块效果显著。目前该套系l已l在五矿邯邢霍邱诺普矿业公司、通化集团桦甸矿业公司、马钢南q业公司的多个料仓成功使用Q深受用hq。ƈ成功入选了国家的“金属非金属矿山新型适用安全技术及装备推广目录”(W一批)?/p> <p> </p> <br> <p></p> <br> <p></p> <p></p> <br> <p></p> 作者:陈勇?张^{(中钢集团马鞍qqI{)本文发表于《现代矿业?018q第7?<p></p> <p style="color: rgb(0, 0, 0); font-family: 宋体; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; 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