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class="maintest"> <h2 align="center">氣力輸送及除灰系統用閥門(mén)有哪幾種？</h2> <div id="7zrjdd5" class="arDate"> <span>信息來(lái)源：本站 | 發(fā)布日期： 2024-01-08 | 瀏覽量：164</span> </div> <div id="5nvd5ff" class="arKeywords"> 關(guān)鍵詞：氣力輸送及除灰系統用閥門(mén)有哪幾種？</div> <div id="5pz5pp5" class="arContent"> <p> LTP氣力輸送倉泵系統主要包括倉泵、閥門(mén)和管道。氣力輸送閥包括進(jìn)料閥、進(jìn)氣閥組、出料閥、平衡閥、補氣閥、管道開(kāi)關(guān)閥和手動(dòng)插板閥，是<a href='http://www.ydlpp.com' target='_blank' class='WithInLink' title='氣力輸送系統'>氣力輸送系統</a>的重要組成部分。<br /> <br /> (1)概述<br /> <br /> 圓頂閥(球形氣鎖閥)是一種新型的快速關(guān)閉閥，常用作LTP氣力輸送倉泵系統的進(jìn)料閥。采用國際先進(jìn)的氣密結構。閥門(mén)啟閉時(shí)，閥芯與可充氣密封圈無(wú)接觸。密封圈采用特殊配方橡膠制成，可廣泛應用于粉末材料的密封。它是氣力輸送系統的關(guān)鍵組成部分，廣泛應用于電力、冶金、化工、食品、制藥等領(lǐng)域。其優(yōu)點(diǎn)如下<br /> <br /> ①閥芯與密封圈無(wú)接觸，運行阻力小，使用壽命長(cháng)；<br /> <br /> ②采用可充氣密封圈，密封性能好；<br /> <br /> ③氣動(dòng)執行器由全封閉旋轉推桿缸驅動(dòng)，旋轉輸出，性能可靠，輸出扭矩大，可滿(mǎn)足惡劣工況。<br /> <br /> (2)圓頂閥的結構特點(diǎn)及技術(shù)參數<br /> <br /> 圓頂閥的旋轉閥芯是一種以半球體為閥芯的球面圓頂，閥座采用壓縮空氣密封圈。氣封圓頂閥通常采用氣動(dòng)，主要用于關(guān)閉或切換氣固兩相流管道。氣封圓頂閥在開(kāi)關(guān)過(guò)程中，閥芯與橡膠密封圈之間保持約3mm的間隙，使閥芯與橡膠密封圈無(wú)接觸運動(dòng)。目的是防止閥芯與橡膠密封圈之間的摩擦，減少磨損，有效降低開(kāi)關(guān)閥的扭矩，粉煤灰高溫熱膨脹時(shí)不會(huì )卡住，從而提高閥門(mén)的密封性能和使用壽命。<br /> <br /> a。結構。顯示了氣動(dòng)輸送的關(guān)鍵部件圓頂閥的裝配圖，主要分為氣動(dòng)執行曲軸氣缸和圓頂閥。圓頂閥的上法蘭與電除塵灰斗連接，下法蘭與倉泵連接，進(jìn)料閥體上可安裝料位計，避免在倉泵上打孔安裝料位計，對鑄造T泵特別有效。<br /> <br /> b。密封。由于氣囊密封，閥芯與閥體之間的間隙調整非常重要，一般在1mm左右。法蘭與閥體之間的密封墊片厚度在裝配和維護中非常重要，漏氣過(guò)厚，卡死過(guò)小。此外，由于系統壓力一般小于0.5，轉軸密封MPa，因此，采用常見(jiàn)的Y型和O型圈組合密封。Y型主要針對軸向密封，O型主要針對周向密封。<br /> <br /> ②圓頂閥零件圖半球閥芯是圓頂閥的關(guān)鍵零件，也是灰色通道和密封橡膠圈周期頻繁接觸的零件。其設計、加工和制造對整個(gè)閥門(mén)的使用壽命特別重要。除了使用耐高溫、耐腐蝕的CF8不銹鋼外，還應進(jìn)行表面滲碳處理，以提高其表面硬度和耐磨性。加工誤差和安裝誤差使閥芯與閥體周?chē)芊馇驇еg的徑向間隙不均勻，造成嚴重后果。如果密封圈的半部分或局部泄漏，泄漏會(huì )帶走灰粒，灰粒會(huì )像磨料一樣在短時(shí)間內磨損密封圈，磨損半球閥芯，使進(jìn)料閥不能正常工作，從而影響整個(gè)氣力傳輸系統。<br /> <div style="white-space:nowrap;"> <br /> </div> </p> <p> <br /> </p> </div>  <div id="j5j555v" class="shareurl C"> <div id="trnjph7" 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