山東SCHUNK PZN64/10300310優勢產品
三偏心蝶閥的結構優化分析：隨著工業技術的發展,普通軟密封蝶閥已滿足不了工業上的需求,金屬硬密封蝶閥很快被開發出來,而三偏心結構蝶閥是蝶閥發展、演化過程中比較高級的一種,但是目前國內還沒有對它作深入的研究,還沒有形成一個比較完善的理論分析體系,致使三偏心蝶閥的發展及應用受到一定程度的限制。本文主要分析了三偏心蝶閥的結構,給出了三偏心的定義,推導出了蝶板截面的幾何方程及其性質,結果表明,沿蝶板厚度的平行截面輪廓線為標準的橢圓形,進而推導出了蝶板幾個主要截面的幾何參數(長軸、短軸)與三個偏心量之間的函數關系;考慮到蝶板啟閉過程中避免與閥體及閥座發生干涉,結合蝶板的啟閉扭矩,確立了三偏心蝶閥回轉中心的適宜區域。
LIKA編碼器IT65-Y-1000ZND2ER/S630B IT65 /S630B
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山東SCHUNK PZN64/10300310優勢產品
二次包裝設備在日化領域的應用呈較快的上升趨勢。隨著行業內競爭的加劇和一些日化企業兼并重組，日化企業對于一些二次包裝設備的需求有所增加。收縮設備、標識設備、自動裝箱、封箱設備的應用量明顯增大。在未來的時間里，二次包裝技術還將在日化領域里扮演更重要的角色。包裝機械低水平重復建設對行業產品的升級換代和創新已經構成了阻礙，應該想辦法來解決。但只能通過市場調節和加強對它的下游產業--食品工業的監管力度來實現自然的淘汰。
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山東SCHUNK PZN64/10300310優勢產品
產生振動與噪聲的原因與排除吸入空氣齒輪泵的泵體與兩側端蓋為直接接觸的硬密封，若接觸面的平面度達不到規定要求，則泵在工作時容易吸入空氣；同樣，泵的端蓋與壓蓋之間也為直接接觸，空氣也容易侵入；若壓蓋為塑料制品，由于其損壞或因溫度變化而變形，也會使密封不嚴而進入空氣。排除這種故障的方法是：當泵體或泵蓋的平面度達不到規定的要求時，可以在平板上用金鋼砂按8字形路線來回研磨，也可以在平面磨床上磨削，使其平面度不超過5μm，并需要保證其平面與孔的垂直度要求；對于泵蓋與壓蓋處的泄漏，可采用涂敷環氧樹脂等膠粘劑進行密封。
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山東SCHUNK PZN64/10300310優勢產品
儀器配有玻璃電極和甘汞電極。將玻璃電極的膠木帽夾在電極夾的小夾子上。將甘汞電極的金屬帽夾在電極夾的大夾子上。可利用電極夾上的支頭螺絲調節兩個電極的高度。玻璃電極在初次使用前，必須在蒸餾水中浸泡24小時以上。平常不用時也應浸泡在蒸餾水中。甘汞電極在初次使用前，應浸泡在飽和氯化鉀溶液內，不要與玻璃電極同泡在蒸餾水中。不使用時也浸泡在飽和氯化鉀溶液中或用橡膠帽套住甘汞電極的下端毛細孔。其次、酸堿度計的校整將pHmv開關撥到pH位置。
