北部精機(jī)電磁換向閥SWH-G02-B21-A220-10

北部精機(jī)電磁換向閥SWH-G02-B21-A220-10

北部精機(jī)電磁換向閥SWH-G02-B21-A220-10

優(yōu)點(diǎn)編輯
動(dòng)作準(zhǔn)確、自動(dòng)化程度高、工作穩(wěn)定可靠，但需附設(shè)驅(qū)動(dòng)和冷卻系統(tǒng)，結(jié)構(gòu)較為復(fù)雜；閥瓣式結(jié)構(gòu)則較簡(jiǎn)單，多用于流量較小的生產(chǎn)工藝上。
在石油、化工、礦山和冶金等行業(yè)中，六通換向閥是一種重要的流體換向設(shè)備。該閥安裝在稀油潤滑系統(tǒng)輸送潤滑油的管道中。通過變換密封組件在閥體中的相對(duì)位置，使閥體各通道連通或斷開，從而控制流體的換向和啟停。
換向閥的主要性能編輯
以電磁閥的項(xiàng)目為最多，它主要包括下面幾項(xiàng)：
1.工作可靠性
指電磁鐵通電后能否可靠地?fù)Q向，而斷電后能否可靠地復(fù)位。電磁閥也只有在一定的流量和壓力范圍內(nèi)才能正常工作。這個(gè)工作范圍的極限稱為換向界限。
2.壓力損失
由于電磁閥的開口很小，故液流流過閥口時(shí)產(chǎn)生較大的壓力損失。
3.內(nèi)泄漏量
在各個(gè)不同的工作位置，在規(guī)定的工作壓力下，從高壓腔漏到低壓腔的泄漏量為內(nèi)泄漏量。過大的內(nèi)泄漏量不僅會(huì)降低系統(tǒng)的效率，引起過熱，而且還會(huì)影響執(zhí)行機(jī)構(gòu)的正常工作。
4.換向和復(fù)位時(shí)間
交流電磁閥的換向時(shí)間一般為0.03～0.05s，換向沖擊較大;而直流電磁閥的換向時(shí)間為0.1～0.3s，換向沖擊較小。通常復(fù)位時(shí)間比換向時(shí)間稍長(zhǎng)。
5.換向頻率
換向頻率是在單位時(shí)間內(nèi)閥所允許的換向次數(shù)。目前單電磁鐵的電磁閥的換向頻率一般為60次/min。
6.使用壽命
電磁閥的使用壽命主要取決于電磁鐵。濕式電磁鐵的壽命比干式的長(zhǎng)，直流電磁鐵的壽命比交流的長(zhǎng)。
7.滑閥的液壓卡緊現(xiàn)象
滑閥的液壓卡緊現(xiàn)象不僅在換向閥中有，其他的液壓閥也普遍存在，在高壓系統(tǒng)中更為突出，特別是滑閥的停留時(shí)間越長(zhǎng)，液壓卡緊力越大，以致造成移動(dòng)滑閥的推力（如電磁鐵推力）不能克服卡緊阻力，使滑閥不能復(fù)位。
引起液壓卡緊的原因，有的是由于臟物進(jìn)入縫隙而使閥芯移動(dòng)困難，有的是由于縫隙過小在油溫升高時(shí)閥芯膨脹而卡死，但是主要原因是來自滑閥副幾何形狀誤差和同心度變化所引起的徑向不平衡液壓力。為了減小徑向不平衡力，應(yīng)嚴(yán)格控制閥芯和閥孔的制造精度，在裝配時(shí)，盡可能使其成為順錐形式，另一方面在閥芯上開環(huán)形均壓槽，也可以大大減小徑向不平衡力



臺(tái)灣北部精機(jī)電磁換向閥SWH-G02-C8-A220-10
臺(tái)灣北部精機(jī)電磁換向閥SWH-G02-C8M-A220-10
臺(tái)灣北部精機(jī)電磁換向閥SWH-G02-C88M-A220-10
臺(tái)灣北部精機(jī)電磁換向閥SWH-G02-C9-A220-10
臺(tái)灣北部精機(jī)電磁換向閥SWH-G02-C92-A220-10
臺(tái)灣北部精機(jī)電磁換向閥SWH-G02-C2B-A220-10
臺(tái)灣北部精機(jī)電磁換向閥SWH-G02-C3B-A220-10
臺(tái)灣北部精機(jī)電磁換向閥SWH-G02-C4B-A220-10
臺(tái)灣北部精機(jī)電磁換向閥SWH-G02-C40B-A220-10
臺(tái)灣北部精機(jī)電磁換向閥SWH-G02-C5B-A220-10
臺(tái)灣北部精機(jī)電磁換向閥SWH-G02-C6B-A220-10
臺(tái)灣北部精機(jī)電磁換向閥SWH-G02-C60B-A220-10
臺(tái)灣北部精機(jī)電磁換向閥SWH-G02-C7B-A220-10
臺(tái)灣北部精機(jī)電磁換向閥SWH-G02-C8B-A220-10
臺(tái)灣北部精機(jī)電磁換向閥SWH-G02-C9B-A220-10


北部精機(jī)電磁換向閥SWH-G02-N2-A220-10
北部精機(jī)電磁換向閥SWH-G02-N3-A220-10
北部精機(jī)電磁換向閥SWH-G02-D2-A220-10
北部精機(jī)電磁換向閥SWH-G02-D3-A220-10
北部精機(jī)電磁換向閥SWH-G02-B2-A220-10
北部精機(jī)電磁換向閥SWH-G02-B20-A220-10
北部精機(jī)電磁換向閥SWH-G02-B21-A220-10
北部精機(jī)電磁換向閥SWH-G02-B3-A220-10
北部精機(jī)電磁換向閥SWH-G02-B51-A220-10
北部精機(jī)電磁換向閥SWH-G02-B2S-A220-10
北部精機(jī)電磁換向閥SWH-G02-B3S-A220-10
北部精機(jī)電磁換向閥SWH-G02-B4S-A220-10
北部精機(jī)電磁換向閥SWH-G02-B20S-A220-10
北部精機(jī)電磁換向閥SWH-G02-B51S-A220-10
北部精機(jī)電磁換向閥SWH-G02-C2BS-A220-10
北部精機(jī)電磁換向閥SWH-G02-C3BS-A220-10
北部精機(jī)電磁換向閥SWH-G02-C4BS-A220-10

SWH-G02-C2-D24-20
SWH-G02-C2M-D24-20
SWH-G02-C22M-D24-20
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SWH-G02-C3-D24-20
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SWH-G02-C40M-D24-20
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SWH-G02-C6-D24-20
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SWH-G02-C3BS-D24-20
SWH-G02-C4BS-D24-20
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SWH-G02-N2-A220-20
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SWH-G02-B51S-A220-20
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SWH-G02-C3BS-A220-20
SWH-G02-C4BS-A220-20

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SWH-G03-C2M-D24-10
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SWH-G03-C23-D24-10
SWH-G03-C3-D24-10
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SWH-G03-B20-A220-10
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SWH-G03-B51-A220-10
SWH-G03-B2S-A220-10
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SWH-G03-B20S-A220-10
SWH-G03-B51S-A220-10
SWH-G03-C2BS-A220-10
SWH-G03-C3BS-A220-10
SWH-G03-C4BS-A220-10
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SWH-G03-C2M-D24-20
SWH-G03-C22M-D24-20
SWH-G03-C23-D24-20
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SWH-G03-C6-D24-20
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SWH-G03-C60-D24-20
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SWH-G03-C7-D24-20
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SWH-G03-C3B-D24-20
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SWH-G03-B20S-A220-20
SWH-G03-B51S-A220-20
SWH-G03-C2BS-A220-20
SWH-G03-C3BS-A220-20
SWH-G03-C4BS-A220-20