DDC-JQ 真空電磁閥:
電磁閥一般流通系數(shù)很小,而且工作壓力差很小。比如一般25口徑的電磁閥流通系數(shù)比15口徑的電動(dòng)球閥小很多。電磁閥的驅(qū)動(dòng)是通過(guò)電磁線圈,比較容易被電壓沖擊損壞。相當(dāng)于開(kāi)關(guān)的作用,就是開(kāi)和關(guān)2個(gè)作用。
電磁閥一般斷電可以復(fù)位,電動(dòng)閥要這樣的功能需要加復(fù)位裝置。
DDC-JQ電磁真空帶充氣閥 | DDC-JQ型電磁真空帶充氣閥是機(jī)械真空泵安全閥,安裝于機(jī)械真空泵的進(jìn)氣口,并與泵同步開(kāi)啟和關(guān)閉。當(dāng)泵停止工作或電源突然中斷時(shí),閥門(mén)自動(dòng)關(guān)閉。使真空系統(tǒng)保持真空并將大氣充入泵腔內(nèi),從而避免泵油逆向流動(dòng)而污染真空系統(tǒng)。適用介質(zhì)為純凈空氣和非腐蝕性氣體。 | | | ■ | DDC-JQ Electro-vacuum Charging Valve | | | ■ | DDC-JQ electro-vacuum charging valve is a safety valve for vacuum, pump. It is mounted at the intake nozzle of vacuum pump, synchronously openedclosed with the vacuum pump. In case that vacuum pump stops working or power supply is suddenly broken off, valve will be cosed automatically to keep the vacuum system vacuumthe air charged into the cavity of vacuum pump, thus to prevent pump oil from reverse flow that can pollute the vacuum system. Applicable medium can be pure airnoncorrosive gases. | | | ■ | 主要技術(shù)性能 Main Technical Performance | | | ■ ■ ■ | 適用范圍:Applicability | 105~10-2Pa | 閥門(mén)漏率:Valve Leak Rate | ≤6.7×10-3Pa.L/S. | 適用溫度:Applicability | -30~+50℃ | 線圍溫升:Coil Temperature Rise | ≤65℃ | 開(kāi)閉時(shí)間:Open-close Time | ≤3S | 電源電壓:Mains Voltage | 220V/50Hz | | | | ■ | 主要零件材料 Materials of Main Parts | | | ■ ■ | 閥體、閥蓋、閥板:碳鋼或鋁合金 密封圈:丁腈橡膠 Body, bonnetdisc: carbon steel or aluminium alloy Seal ring: NBR | | | CONSTRUCTION FIGHTSmm | | ■ | 外形及連接尺寸mmJB919 OverallConnection Dimensionsmm | | | Model 型號(hào) | DN | h | B | H | D | Do | D1 | n-d | Machineal pump 機(jī)械泵匹配參考 | DDC-JQ16 | 16 | 28 | 48 | 176 | 68 | 42 | 22 | 4-M5 | 2XZ-0.5~1 | DDC-JQ25 | 25 | 35 | 58 | 199 | 82 | 55 | 29 | 4-M6 | 2XZ-2~4 | DDC-JQ32 | 32 | 40 | 68 | 222 | 92 | 64 | 36 | 4-M6 | 2XZ-4 | DDC-JQ40 | 40 | 44 | 80 | 253 | 110 | 70 | 44 | 4-M6 | 2XZ-8 | DDC-JQ50 | 50 | 56 | 94 | 294 | 124 | 90 | 55 | 4-M8 | 2X-15 | DDC-JQ65 | 65 | 65 | 115 | 320 | 135 | 105 | 70 | 4-M8 | 2X-30 | DDC-JQ80 | 80 | 75 | 140 | 367 | 165 | 125 | 85 | 4-M8 | 2X-70 | | |
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