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<p><p>　聚氨酯篩網振動篩是一種以高頻率、高振動強度為主要特征的振動篩,主要適用于0.5mm以下細粒物料的濕式分級與固液分離。在選煤行業中,因其投資和運行成本較低,使得大多數選煤廠都有能力采用其回收煤泥,從而實現洗水閉路循環和改善選煤廠的環境,而具有明顯的經濟與社會效益。目前在國內外已得到廣泛的推廣與應用。</p><p>　國外高頻振動篩的研究現狀早在20世紀50年代初期,國外就已研發出高頻振動篩。在冶金行業中,用作選礦廠細粒鐵礦石分級;在煤炭加工中,用于煤泥脫水、脫介和分級等。目前,國外擁有該項技術的國家有美國、澳大利亞、德國、法國和芬蘭等。其產品也呈現出多樣化,如申克公司生產的SLV型高頻振動脫水篩、諾德伯格公司生產的HF型高頻振動篩等。目前,從所查閱的文獻來看,國外設計的高頻振動篩的振動參數彼此相差很大,綜合起來,振動頻率24～60Hz,振動強度5～11gn。國外生產的高頻振動篩具有處理量大、效率高、性能穩定、壽命較長等優點,但缺點主要是價格昂貴、處理量小、性價比不高等,目前,其跨度最大只有1.8m。雖然國外高頻振動篩型號各異,但工作原理基本都相似。<br/></p><p style="text-align: center;"><img src="/uploads/ueditor/20201123/1-201123101UXZ.jpg" title="國內外聚氨酯篩網發展趨勢分析" alt="國內外聚氨酯篩網發展趨勢分析" width="640" height="640" border="0" vspace="0" style="width: 640px; height: 640px;"/></p><p>　下面，<a href="http://www.leaninsea.com/" target="_blank" title="聚氨酯篩網廠家">聚氨酯篩網廠家</a>就高頻振動篩的發展趨勢給大家做個介紹：</p><p> (1)向大型化發展。高頻振動篩的大型化指篩子的運動參數與面積的大型化,主要分別解決物料的篩分效果的問題和篩子的處理能力的問題,大型化可以減少篩分設備的數量和費用、減少廠房面積、減少初期基建投資。<br/></p><p>　(2)向減少參振質量發展。通過參振質量的減少,激振力也可以隨之減小,由此可以保證強度和剛度,降低振動噪音,并可起到良好的減振效果。<br/></p><p>　(3)向標準化、系列化、通用化發展。標準化、系列化、通用化,這是便于設計、生產和降低成本的有效途徑。<br/></p><p>　(4)對高頻振動篩在選煤中的用途進行分析與研究。目前,高頻振動篩代替沉降過濾離心機、加壓過濾機或者隔膜過濾機,進行浮選精煤脫水,代替浮選系統和回收組煤泥等,在洗煤廠進行的實踐,取得良好效果。今后,將對其在選煤中的其他用途進行分析與研究,提高其在選煤中的作用。<br/></p><p>　高頻振動篩發展過程中存在的問題，首先對篩機本身結構了解不夠。在設計過程中由于對各個部件的結構強度的了解不夠,在生產中容易造成應力集中,進而造成側板、支撐梁、篩板等斷裂現象,影響正常的生產活動。其次在向大型化設計過程中進步緩慢。<br/></p><p>　<a href="http://www.leaninsea.com/" target="_blank" title="聚氨酯篩網">聚氨酯篩網</a>未來的幾個發展發展趨勢<br/></p><p> 1.專業化趨勢明顯，以往的篩網生產廠家,品種少、科技含量低、產量少、成本高,缺乏先進設計理念。在市場需求量猛增的今天,很多國內廠家對自身結構進行了重新考慮和定位,逐步發展為專業化篩網生產企業,已經呈現專業化程度高、品種全、批量化的趨勢。</p><p>　2.重視技術進步和知識產權保護，國內企業在聚氨酯篩網研發、結構設計和選材等方面都是采用國外先進技術,而在篩網設計上已經擁有多項發明專利及相應的科技成果，大大提升了我國篩板的技術含量和知名度,同時也保護了企業的根本利益。</p><p>　3.突出新材料的應用和設計，目前,我國小企業生產的篩網技術含量低,特別是在原料上無法突破,依然采用一步法生產。我國大部分企業依然采用TDI型澆注型聚氨酯彈性體進行生產,但是該體系存在較多問題。首先在生產領域,職工連續工作時間不能超過6個月;處于安全和環保方面考慮,我國對TDI的倉儲、運輸等環節嚴格限制,尤其2010年我國對劇毒品TD I的監管級別進一步提高,致使使用TD I的篩板制造企業生存條件受到挑戰,生產、運輸及使用倉儲均受到較大影響。澎湃網業率先從引進技術,采用MD I型澆注聚氨酯來加工制造篩網。</p><p><br/></p> </p> <div class="mio-alink">原創文章地址：<a href="http://www.leaninsea.com/?m=home&c=View&a=index&aid=618">http://www.leaninsea.com/?m=home&c=View&a=index&aid=618 </a></div> </div> </div> <div class="row mio-prev-next"> <div class="col-md-6">上一篇：沒有了</div> <div class="col-md-6">上一篇：<a href="" title=""> </a></div> <div class="col-md-6">下一篇：沒有了</div> <div class="col-md-6 tr">下一篇：<a href="" title=""> </a></div> <div class="mio-arelated"> <h3 class="h3ti"><span>相關產品</span></h3> <div 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