力士樂MDD065C-N-040-N2L-095PB0德國
為便于止回閥拆卸前泄壓，對于止回閥本身不帶放凈閥的，應(yīng)在止回閥與切斷閥之間加裝泄壓用放凈閥。防止水力沖擊對止回閥密封面損壞的保護(hù)措施止回閥的設(shè)置,起到了防止物料倒流，避免泵葉輪遭受液擊的作用。但就止回閥本身而言,設(shè)置不當(dāng),會造成水擊所產(chǎn)生的閥瓣對閥座的突然撞擊，損及止回閥密封面。應(yīng)采取以幾點(diǎn)保護(hù)措施。對于泵出口設(shè)置8mm的旋啟式止回閥，應(yīng)采用水平安裝方式，以減弱閥瓣回座及產(chǎn)生的撞擊。
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3HNE 00601-1
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BALLUFF BML-S1B0-Q61F-M400-10-KA02 Magnetic Linear Encoder
Balluff Wegaufnehmer BTL5-C17-M00 40-P-SA120-S32 BTL031K
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Balluff Capteur BES 516-3007-E4-C-PU-05
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zui常用的電磁閥為二位二通電磁閥、二位三通電磁閥和三位四通電磁閥；通常二位二通電磁閥包含一個(gè)線圈，PLC或者其他系統(tǒng)的一個(gè)輸出點(diǎn)控制該線圈，即通電時(shí)打開或關(guān)閉，斷電時(shí)沒有動作，這種電磁閥在控制上只有一種運(yùn)動，另一種運(yùn)動需要機(jī)械條件配合，所以二位二通電磁閥多常見于安全閥系統(tǒng)。二位三通電磁閥也包含一個(gè)線圈，PLC或者其他系統(tǒng)的一個(gè)輸出點(diǎn)控制這個(gè)線圈，即通電時(shí)打開或關(guān)閉，斷電時(shí)動作相反；這種電磁閥適用于動作簡單、反復(fù)運(yùn)動的機(jī)械結(jié)構(gòu)中，比如說單線圈控制的氣缸等。
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