力士樂(lè)壓力繼電器
壓力繼電器有柱塞式、膜片式、彈簧管式和波紋管式四種結(jié)構(gòu)形式。下面對(duì)
圖1 柱塞式壓力繼電器
圖1 柱塞式壓力繼電器
柱塞式壓力繼電器的工作原理作一介紹:
當(dāng)從繼電器下端進(jìn)油口3進(jìn)入的液體壓力達(dá)到調(diào)定壓力值時(shí),推動(dòng)柱塞2上移,此位移通過(guò)杠桿放大后推動(dòng)微動(dòng)開(kāi)關(guān)4動(dòng)作。改變彈簧1的壓縮量,可以調(diào)節(jié)繼電器的動(dòng)作壓力。
應(yīng)用場(chǎng)合:用于安全保護(hù)、控制執(zhí)行元件的順序動(dòng)作、用于泵的啟閉、用于泵的卸荷。
注意: 壓力繼電器必須放在壓力有明顯變化的地方才能輸出電信號(hào)。若將壓力繼電器放在回油路上,由于回油路直接接回油箱,壓力也沒(méi)有變化,所以壓力繼電器也不會(huì)工作。
HED1KA4X/100
HED1KA4X/350
HED1KA4X/500
HED10A4X/50
HED10A4X/100
HED10A4X/350
HED20A2X/25
HED20A2X/63
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HED20A2X/400
HED30A2X/25
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HED30A2X/200
HED30A2X/400
HED50A1-2X/50K14
HED50A1-2X/100K14
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HED50A1-2X/350K14
HED50A1-2X/630K14
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