產(chǎn)品詳情
對溢流閥的主要要求:調(diào)壓范圍大,調(diào)壓偏差小,壓力振擺小,動作靈敏,過載能力大,噪聲小。
1)電磁溢流閥原理上,一般是由先導(dǎo)式溢流閥加上一個2位2通電磁閥組成。
2)這個電磁閥實際上由兩部分組成:2位2通的液壓閥部分,加上一個電磁鐵。2位2通閥是開通,還是關(guān)閉,是由電磁鐵推動閥芯運動來實現(xiàn)的。像樓上朋友講的,有的閥電磁鐵通電時打開,有的閥電磁鐵斷電時打開,蘿目青菜個人各愛(根據(jù)系統(tǒng)要求選擇)。也就是說,電磁閥這里有一條通路一頭與先導(dǎo)溢流閥的某個部位相連,另一頭通過油管與油箱相連。通過操作電磁鐵可以讓先導(dǎo)溢流閥的某個部位或者與油箱相通,或者不與油箱相通。
3)先導(dǎo)溢流閥的主閥上腔壓力,是由先導(dǎo)閥加于控制的。如果先導(dǎo)閥正常工作,即主閥上腔有先導(dǎo)閥規(guī)定的壓力,則整個溢流閥就會在系統(tǒng)壓力到達調(diào)定壓力時其主閥口打開一定的開度,一方面能將系統(tǒng)多余流量流回油箱,另一方面又能維持系統(tǒng)的壓力為先導(dǎo)閥的調(diào)定值??梢?,先導(dǎo)閥主要管壓力,主閥服從先導(dǎo)閥的領(lǐng)導(dǎo),在先導(dǎo)閥動作時將主閥口開到合適大小,正好將多余流量流出去,又不影響系統(tǒng)壓力。R900977515 DBAR30H2N1X/315
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