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計量泵技術(shù)
您的當前位置：巴特首頁 > 技術(shù)支持 > 計量泵技術(shù) >計量泵選型要點
來源：巴特計量泵、齒輪泵公司 發(fā)布時間：2013-11-11 09:42:43 瀏覽次數(shù)：次
在工業(yè)生產(chǎn)中，很多地方都需要用到計量泵，那么針對計量泵如何選型呢？選擇計量泵我們要關(guān)注那些信息呢？這都是很關(guān)鍵的，下邊鄭州巴特就為您簡單介紹下計量泵的相關(guān)知識。
恰當?shù)剡x擇計量泵都需要哪些信息?
1. 被計量液體的流量。
2. 被計量液體的主要特性，例如化學(xué)腐蝕性、黏度和比重等。
3. 系統(tǒng)的背壓。
4. 合適的吸升高度。
5. 需要的其他選項，如模擬量控制、脈沖量控制、流量監(jiān)視和定時器。
電磁驅(qū)動計量泵有哪些主要優(yōu)勢?
電磁驅(qū)動計量泵只有一個運動部件—電樞軸。通常來講，運動部件越少則計量泵工作越可靠。計量泵非常適合于低流量、低壓力工作場合，并且在供電電壓波動時有良好的補償作用。
與固定頻率、改變沖程長度的計量泵相比較， 固定沖程長度、改變頻率的計量泵有哪些優(yōu)勢?
通過校正，每一個沖程的投加量是已知的。因此總的投加量可以通過計算得出（投加量=每沖程投加量*頻率）?？偼都恿颗c頻率成線性關(guān)系(50 % 頻率 = 50 % 投加量) 。通過外部的脈沖或模擬量控制，投加量可以在一秒鐘之內(nèi)從小調(diào)到大。另外它比電機驅(qū)動的沖程長度調(diào)節(jié)成本要低的多。
如何使用計量泵的性能曲線圖?
1. 找到與所選用的計量泵相應(yīng)的性能曲線圖。
2. 在下面的圖表中標示出當前的背壓。
3. 確定修正因數(shù)，取以bar為單位的背壓值，向上延伸至曲線，在交叉點垂直向左讀取修正因數(shù)值。
4. 用需要的投加量值除以修正因數(shù)值，得出以 ml/min.或 L/h為單位的值。
5. 把計算結(jié)果放在投加量刻度的中間。
6. 當把這個值放在投加量刻度上時，可以使用一把直尺，查找出沖程長度設(shè)定和沖程頻率設(shè)定。
鄭州巴特熔體泵有限公司
主營產(chǎn)品：計量泵、齒輪泵、熔體泵、高溫熔體泵、
熔體齒輪泵、熔體計量泵、化學(xué)泵、化工泵。
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