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| 電動(dòng)機(jī)功率 | 11kW | 外形尺寸 | 14mm |
|---|---|---|---|
| 應(yīng)用領(lǐng)域 | 化工,農(nóng)林牧漁,能源,建材/家具,電子/電池 | 重量 | 14kg |
產(chǎn)品簡(jiǎn)介
詳細(xì)介紹
單向閥又稱(chēng)止回閥或逆止閥,。用于液壓系統(tǒng)中防止油流反向流動(dòng),或者用于氣動(dòng)系統(tǒng)中防止壓縮空氣逆向流動(dòng),。
單向閥有直通式和直角式兩種。直通式單向閥用螺紋連接安裝在管路上,。直角式單向閥有螺紋連接,、板式連接和法蘭連接三種形式。液控單向閥也稱(chēng)閉鎖閥或保壓閥,，它與單向閥相同,，用以防止油液反向流動(dòng)。但在液壓回路中需要油流反向流動(dòng)時(shí)又可利用控制油壓,，打開(kāi)單向閥,，使油流在兩個(gè)方向都可流動(dòng)。液控單向閥采用錐形閥芯,，因此密封性能好,。在要求封閉油路時(shí)，可用此閥作為油路的單向鎖緊而起保壓作用。液控單向閥控制油的泄漏方式有內(nèi)泄式和外泄式二種,。在油流反向出口無(wú)背壓的油路中可用內(nèi)泄式,；否則需用外泄式，以降低控制油壓力,。
注意事項(xiàng),。
(1)必須保證液控單向閥有足夠的控制壓力，絕對(duì)不允許控制壓力失壓,。應(yīng)注意控制壓力是否滿足反向開(kāi)啟的要求,。如果液控單向閥的控制引自主系統(tǒng)時(shí)，則要分析主系統(tǒng)壓力的變化對(duì)控制油路壓力的影響,，以免出現(xiàn)液控單向閥的誤動(dòng)作,。
(2)根據(jù)液控單向閥在液壓系統(tǒng)中的位置或反向出油腔后的液流阻力（背壓）大小，合理選擇液控單向閥的結(jié)構(gòu)（簡(jiǎn)式或復(fù)式）及泄油方式（內(nèi)泄或外泄）,。對(duì)于內(nèi)泄式液控單向閥來(lái)說(shuō),，當(dāng)反向油出口壓力超過(guò)一定值時(shí)，液控部分將失去控制作用,，故內(nèi)泄式液控單向閥一般用于反向出油腔無(wú)背壓或背壓較小的場(chǎng)合,；而外泄式液控單向閥可用于反向出油腔背壓較高的場(chǎng)合，以降低最小的控制壓力,，節(jié)省控制功率,。系統(tǒng)若采用內(nèi)卸式，則柱塞缸將斷續(xù)下降發(fā)出振動(dòng)和噪聲,。
節(jié)流口堵塞原因：
1,、油液中的機(jī)械雜質(zhì)或因氧化析出的膠質(zhì)、瀝青,、碳渣等污物堆積在節(jié)流縫隙處,。
2、由于油液老化或受到擠壓后產(chǎn)生帶電的極化分子,，而節(jié)流縫隙的金屬表面上存在電位差,，故極化分子被吸附到縫隙表面，形成牢固的邊界吸附層,，吸附層厚度一般為5~8微米，因而影響了節(jié)流縫隙的大小,。以上堆積,、吸附物增長(zhǎng)到一定厚度時(shí)，會(huì)被液流沖刷掉,，隨后又重新附在閥口上,。這樣周而復(fù)始，就形成了流量的脈動(dòng)。
3,、閥口壓差較大時(shí),，因閥口溫度高，液體受擠壓的程度增強(qiáng),，金屬表面也更易受摩擦作用而形成電位差,，因此壓差大時(shí)容易產(chǎn)生堵塞現(xiàn)象。
減輕節(jié)流口堵塞的措施：
1,、選擇水力半徑大的薄刃節(jié)流口,。
2、精密過(guò)濾并定期更換油液,。
3,、適當(dāng)減小節(jié)流口前后的壓差。
4,、采用電位差較小的金屬材料,、選用抗氧化穩(wěn)定性好的油液、減小節(jié)流口表面粗糙度,。
型號(hào)提供：
REXROTH R900348007 S10/A0.0/12
力士樂(lè)管式單向閥S10A1. R900420531
REXROTH R900420531 S10A1.0/
REXROTH R900497659 S10A1.0/12
力士樂(lè)管式單向閥S10A1. R900420531
REXROTH R900490600 S15A0.0/12
REXROTH R900420537 S15A1.0/
REXROTH R900455137 S15A1.0/12
REXROTH R900486216 S15A5.0/12
REXROTH R900343034 S20A0.0/12
REXROTH R900470782 S20A1.0/12
REXROTH R900353560 S20A2.0/12
REXROTH R900470822 S20A3.0/12
REXROTH R900347261 S20A5.0/12
REXROTH R900344017 S25A0.0/12
REXROTH R900420511 S25A1.0/
REXROTH R900455138 S25A1.0/12
REXROTH R900354272 S25A5.0/12
REXROTH R900415457 S30A0.0/12
REXROTH R900420519 S30A1.0/
REXROTH R900492887 S30A1.0/12
REXROTH R900342882 S30A2.0/12
REXROTH R900470823 S30A3.0/12
REXROTH R900488016 S8A1.0/12
REXROTH R900348007 S10A0.0//12
REXROTH R900420531 S10A1.0/
REXROTH R900497659 S10A1.0//12
REXROTH R900424731 S10A1.0//5
REXROTH R900356466 S10A2.0//12
REXROTH R900587740 S10A2.0//5
REXROTH R900497660 S10A3.0//12
REXROTH R900470821 S10A5.0//12
REXROTH R900490600 S15A0.0//12
REXROTH R900420537 S15A1.0/
REXROTH R900455137 S15A1.0//12
REXROTH R900427399 S15A1.0//5
REXROTH R900343481 S15A2.0//12
REXROTH R900438478 S15A2.0//5
REXROTH R900490601 S15A3.0//12
REXROTH R900420522 S15A3.0//5
REXROTH R900486216 S15A5.0//12
REXROTH R900453799 S15A5.0//5
REXROTH R900343034 S20A0.0//12
REXROTH R900435990 S20A0.0//5
REXROTH R900470782 S20A1.0//12
REXROTH R900420526 S20A1.0//5
REXROTH R900353560 S20A2.0//12
REXROTH R900423407 S20A2.0//5
REXROTH R900470822 S20A3.0//12
REXROTH R900429261 S20A3.0//5
REXROTH R900347261 S20A5.0//12
REXROTH R900344017 S25A0.0//12
REXROTH R900445030 S25A0.0//5
REXROTH R900420511 S25A1.0/
REXROTH R900455138 S25A1.0//12
REXROTH R900420512 S25A1.0//5
REXROTH R900347547 S25A2.0//12
REXROTH R900423411 S25A2.0//5
REXROTH R900340147 S25A3.0//12
REXROTH R900354272 S25A5.0//12
REXROTH R900415457 S30A0.0//12
REXROTH R900433632 S30A0.0//5
REXROTH R900420519 S30A1.0/
REXROTH R900492887 S30A1.0//12
REXROTH R900420500 S30A1.0//5
REXROTH R900342882 S30A2.0//12
REXROTH R900420503 S30A2.0//5
REXROTH R900470823 S30A3.0//12
REXROTH R900347681 S30A5.0//12
REXROTH R900422882 S6A1.0//5
REXROTH R900488016 S8A1.0//12
REXROTH R900348007 S10A0.0//12
REXROTH R900420531 S10A1.0/
REXROTH R900497659 S10A1.0//12
REXROTH R900356466 S10A2.0//12
REXROTH R900497660 S10A3.0//12
REXROTH R900470821 S10A5.0//12
REXROTH R900490600 S15A0.0//12
REXROTH R900420537 S15A1.0/
REXROTH R900455137 S15A1.0//12
REXROTH R900343481 S15A2.0//12
REXROTH R900490601 S15A3.0//12
REXROTH R900486216 S15A5.0//12
REXROTH R900343034 S20A0.0//12
REXROTH R900470782 S20A1.0//12
REXROTH R900353560 S20A2.0//12
REXROTH R900470822 S20A3.0//12
REXROTH R900347261 S20A5.0//12
REXROTH R900344017 S25A0.0//12
REXROTH R900420511 S25A1.0/
REXROTH R900455138 S25A1.0//12
REXROTH R900347547 S25A2.0//12
REXROTH R900340147 S25A3.0//12
REXROTH R900354272 S25A5.0//12
REXROTH R900415457 S30A0.0//12
REXROTH R900420519 S30A1.0/
REXROTH R900492887 S30A1.0//12
REXROTH R900342882 S30A2.0//12
REXROTH R900470823 S30A3.0//12
REXROTH R900347681 S30A5.0//12
REXROTH R900488016 S8A1.0//12
力士樂(lè)單向閥R900459203 Z2FS16-8-3X/S
力士樂(lè)單向閥R900457256 Z2FS16-8-3X/S2
力士樂(lè)單向閥R901413310 Z2FS16-8-3X/S2J3
力士樂(lè)單向閥R901413311 Z2FS16-8-3X/S2J3V
力士樂(lè)單向閥R900473688 Z2FS16-8-3X/S2V
力士樂(lè)單向閥R901413313 Z2FS16-8-3X/SJ3
力士樂(lè)單向閥R901413315 Z2FS16-8-3X/SJ3V
力士樂(lè)單向閥R900470529 Z2FS16-8-3X/SV
力士樂(lè)單向閥R900073409 Z2FS16-8-3X/SV=LB
力士樂(lè)單向閥R900426851 Z2FS16A8-3X/S
力士樂(lè)單向閥R900348227 Z2FS16A8-3X/S2
力士樂(lè)單向閥R900591255 Z2FS16A8-3X/S2V
力士樂(lè)單向閥R900498950 Z2FS16B8-3X/S
力士樂(lè)單向閥R900481621 Z2FS6-2-4X/1Q
力士樂(lè)單向閥R900481623 Z2FS6-2-4X/1QV
力士樂(lè)單向閥R900481622 Z2FS6-2-4X/2Q
力士樂(lè)單向閥R901435983 Z2FS6-2-4X/2QJ3V/60
力士樂(lè)單向閥R900481624 Z2FS6-2-4X/2QV
力士樂(lè)單向閥R900727967 Z2FS6-2-4X/2QV/60