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style="line-height:23px;background:#F4F4F4"><span style="font-size: 12px">4.1</span><span style="font-size: 12px">清灰装置</span></p><p style="line-height:23px;background:#F4F4F4"><span style="font-size: 12px">传统的滤筒除尘器有两种清灰方式，一种是高压气流反吹，一种是脉冲气流喷吹，实践表明前者的优点是气流均匀，缺点是耗气量大；后者的优点是耗气量小，缺点是气流弱小。为此可作两个方面改进：一方面在脉冲喷吹管上增加导流装置，加强气流诱导作用，另一方面把滤筒上部导流风管取消，使脉冲气流和诱导气流同时充分进入滤筒。这样改进后耗气量少，气流均匀，清灰效果好，根据计算，技术改进后的清灰气流流量是脉冲气量�?�?倍、�/span></p><p style="line-height:23px;background:#F4F4F4"><span style="font-size: 12px">4.2 </span><span style="font-size: 12px">气量分布松�/span></p><p style="line-height:23px;background:#F4F4F4"><span style="font-size: 12px">滤筒除尘器的气流分布很重要，必须考虑如何避免设备进口处由于风速较高造成对滤料的高磨损区域。气流分布板用于滤筒式除尘器有独特要求，气流分布必须十分稳定和均匀。才有利于气流的上升和粉尘的下降，气流分布板开孔率35%。根据计算，阻力系数<2，由此可见在气流速度<0.8m/s的情况下，多孔气流分布板可以满足滤筒式除尘器的要求、�/span></p><h2 style="line-height:23px;background:#F4F4F4"><span style="font-size: 12px">二�?strong>腾飞环保除尘过程</strong></span></h2><p style="line-height:23px;background:#F4F4F4"><span style="font-size: 12px">1</span><span style="font-size: 12px">、捕集分离过稊�/span></p><p style="line-height:23px;background:#F4F4F4"><span style="font-size: 12px">⑟�/span><span style="font-size: 12px">捕集推移阶段。实质是粉尘的浓缩阶段。均匀混合或悬浮在运载介质中的粉尘，进入除尘器的除尘空间。由于受外力的作用，将粉尘推移到分离界面，随粉尘向分离界面推移，浓度越来越大，为固—气分离进一步作好准备、�/span></p><p style="line-height:23px;background:#F4F4F4"><span style="font-size: 12px">� </span><span style="font-size: 12px">分离阶段。当高浓度的尘流流向分离界面以后，存在两种作用机理：其一，运载介质运载粉尘的能力逐渐达到极限状态，在粉尘悬浮和沉降趋势上，以沉降为主，并通过粉尘沉降，使之从运载介质中分离出来；其二，在高浓度尘流中，粉尘颗粒的扩散与凝聚趋势，以凝聚为主，颗粒之间可以彼此凝聚，也可在实质界面上凝聚并吸附、�/span></p><p style="line-height:23px;background:#F4F4F4"><span style="font-size: 12px">2</span><span style="font-size: 12px">、排尘过稊�/span></p><p style="line-height:23px;background:#F4F4F4"><span style="font-size: 12px">经过分离界面以后，己分离的粉尘通过排尘口排出的过程、�/span></p><p style="line-height:23px;background:#F4F4F4"><span style="font-size: 12px">3</span><span style="font-size: 12px">、排气过稊�/span></p><p style="line-height:23px;background:#F4F4F4"><span style="font-size: 12px">已除尘后相对净化的气流从排气口排出的过稊�/span></p><p style="line-height:23px;background:#F4F4F4"><span style="font-size: 12px">6</span><span style="font-size: 12px">滤筒除尘器的标准</span></p><p style="line-height:23px;background:#F4F4F4">2002平�span style="font-size:12px">中华人民共和囼�/span>机械<span style="font-size:12px">行业标准</span>：滤筒式除尘器标� JB/T10341-2002</p><p style="line-height:23px;background:#F4F4F4"><strong><span style="font-size: 12px">三、腾飞环俜�/span></strong><strong>滤筒除尘器的特点</strong></p><p style="line-height:23px;background:#F4F4F4"><span style="font-size: 12px">滤筒除尘器的特点如下９�/span></p><p style="line-height:23px;background:#F4F4F4"><span style="font-size: 12px">⑟�/span><span style="font-size: 12px">由于滤料折褶成筒状使用，使滤料布置密度大，所以除尘器结构紧凑，体积小；②滤筒高度小，安装方便，使用维修工作量小；</span></p><p style="line-height:23px;background:#F4F4F4"><span style="font-size: 12px">②�/span><span style="font-size: 12px">同体积除尘器过滤面积相对较大，过滤风速较小，阻力不大：�/span></p><p style="line-height:23px;background:#F4F4F4"><span style="font-size: 12px">③�/span><span style="font-size: 12px">滤料折褶要求两端密封严格，不能有漏气，否则会降低效果、�/span></p><h2 style="line-height:23px;background:#F4F4F4"><strong><span style="font-size: 12px">四、腾飞环保滤筒除尘器主要性能指标</span></strong></h2><p style="line-height:23px;background:#F4F4F4"><span style="font-size: 12px">脉冲气流没有经过文丘里就直接喷吹进入滤筒内部。将会导致滤筒靠近脉冲阀的一端（上部）承受负压，而滤筒的另一端（下部）将承受压力如图6-29所示。这就会造成滤筒的上下部清灰不同而可能缩短使用寿命，并使设备不能达到有效清灰、�/span></p><p style="line-height:23px;background:#F4F4F4"><span style="font-size: 12px">为此可在脉冲阀出口或者脉冲喷吹管上安装滤筒用文丘里喷嘴。把喷吹压力的分布情况改良成比较均匀的全滤筒高度正压喷吹、�/span></p><p style="line-height:23px;background:#F4F4F4"><span style="font-size: 12px">灰尘堆积在滤筒的折叠缝中将使清灰比较困难。所以折叠面积大的滤筒（每个滤筒的过滤面积达20~22m2）一般只适合应用于较低入口浓度的情况。比较常用滤筒尺寸与过滤面积、�/span></p><p style="line-height:23px;background:#F4F4F4"><span style="font-size: 12px">滤筒除尘器脉冲喷吹装置的分气箱应符合JB/T 10191-2000的规定。洁净气流应无水、无油、无尘。脉冲阀在规定条件下，喷吹阀及接口应无漏气现象，并能正常启闭，工作可靠、�/span></p><p style="line-height:23px;background:#F4F4F4"><span style="font-size: 12px">脉冲控制�?/span><span style="font-size: 12px">工作应准确可靠，其喷吹时间与间隔均可在一定范围内调整。诱导喷吹装置与喷吹管配合安装时。诱导喷吹装置的喷口应与喷吹管上的喷孔同轴，并保持与喷管一致的垂直度，其偏差小�?mm、�/span></p><h2 style="line-height:23px;background:#F4F4F4"><strong><span style="font-size: 12px">五、腾飞环保滤筒除尘器滤筒及滤斘�/span></strong></h2><h3 style="line-height:23px;background:#F4F4F4"><strong><span style="font-size: 12px">滤筒</span></strong></h3><p style="line-height:23px;background:#F4F4F4"><span style="font-size: 12px">滤筒式除尘器的过滤元件是滤筒。滤筒的构造分为顶盖、金属框架、褶形滤料和底座等四部分。由这四部分组成的滤筒有圆形、扁形和锥形等、�/span></p><p style="line-height:23px;background:#F4F4F4"><span style="font-size: 12px">滤筒是用设计长度的滤料折叠成褶，首尾黏合成筒，筒的内外用金属框架支撑，上、下用顶盖和底座固定。顶盖有固定螺栓及垫圈。圆形滤筒，扁形滤筒的外形、�/span></p><p style="line-height:23px;background:#F4F4F4"><span style="font-size: 12px">滤筒的上下端盖、护网的粘接应可靠，不应有脱胶、漏胶和流挂等缺陷；滤筒上的金属件应满足防锈要求；滤筒外表面应无明显伤痕、磕碰、拉毛和毛刺等缺陷；滤筒的喷吹清灰按需要可配用诱导喷嘴或文氏管等喷吹装置，滤筒内侧应加防护网，当选用D�?20mm，H�?200mm滤筒时，宜配用诱导喷嘴、�/span></p><p><br/></p> </div>  <div class="cxd"> <div class="cxd_tit"><span></span>创新炸�/div> <p style=" color: #333; 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