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    • REXROTH單向閥Z2S6A2-6X/

      產品型號: Z2S6A2-6X/
      品  牌: 力士樂REXROTH
      • 1-4 臺
        ¥900.00
      • 5-9 臺
        ¥880.00
      • ≧10 臺
        ¥850.00
      所 在 地: 上海浦東新區
      更新日期: 2025-11-12
      詳細信息
       品牌:力士樂REXROTH  型號:Z2S6A2-6X/  加工定制:否  
       適用介質:油品  壓力環境:常壓  標準:德標  
       材質:鑄鐵  連接形式:法蘭  外形:小型  
       流動方向:單向  零部件及配件:閥體  驅動方式:電磁  
       工作溫度:常溫  類型:先導式  形態:柱塞式  
      REXROTH單向閥Z2S6A2-6X/是上海韋米機電設備有限公司主營產品之一,銷售熱線: ;聯系人:雷青;在線QQ:---;移動熱線: ;進口品牌備件上海優質供應商,現貨供應。歡迎新老客戶來電咨詢采購!

      單向閥是流體只能沿一個方向流通,另一方向不能通過的閥。單向閥就是止回閥 止回閥只供防止各類管路或設備上流體介質逆流的單向啟閉閥。 止回閥用途廣泛,有很多種類,下面說的是供水和熱力常用的止回閥: 1、彈簧式:液體由下而上,依靠壓力頂起彈簧控制的閥瓣,壓力消失后,彈簧力將閥瓣壓下,封閉液體倒流。常用于通徑較小的止回閥。 2、重力式:和彈簧式相似,依靠閥瓣的自身重力封閉,防止倒流。 3、旋啟式:液體在閥體內直通,依靠壓力頂開一側的旋轉閥瓣,壓力失去后,閥瓣依靠自重回位,反向的液體壓力封閉閥瓣。 其它的單向閥(止回閥),如排污的止回閥,人防的防爆閥和液體使用的止回閥的原理是大同小異
       
       
      液控單向閥是依靠控制流體壓力,可以使單向閥反向流通的閥。這種閥在煤礦機械的液壓支護設備中占有較重要的地位。液控單向閥與普通單向閥不同之處是多了一個控制油路K,當控制油路未接通壓力油液時,液控單向閥就象普通單向閥一樣工作,壓力油只從進油口流向出油口,不能反向流動。當控制油路油控制壓力輸入時,活塞頂桿在壓力油作用下向右移動,用頂桿頂開單向閥,使進出油口接通。若出油口大于進油口就能使油液反向流動。

      (1)保持壓力。
      滑閥式換向閥都有間隙泄漏現象,只能短時間保壓。當有保壓要求時,可在油路上加一個液控單向閥,利用錐閥關閉的嚴密性,使油路長時間保壓。
      (2)液壓缸的“支承”。
      在立式液壓缸中,由于滑閥和管的泄漏,在活塞和活塞桿的重力下,可能引起活塞和活塞桿下滑。將液控單向閥接于液壓缸下腔的油路,則可防止液壓缸活塞和滑塊等活動部分下滑。
      (3)實現液壓缸鎖緊。
      當換向閥處于中位時,兩個液控單向閥關閉,可嚴密封閉液壓缸兩腔的油液,這時活塞就不能因外力作用而產生移動。
      (4)大流量排油。
      液壓缸兩腔的有效工作面積相差很大。在活塞退回時,液壓缸右腔排油量驟然增大,此時若采用小流量的滑閥,會產生節流作用,限制活塞的后退速度;若加設液控單向閥,在液壓缸活塞后退時,控制壓力油將液控單向閥打開,便可以順利地將右腔油液排出。
      (5)作充油閥。
      立式液壓缸的活塞在高速下降過程中,因高壓油和自重的作用,致使下降迅速,產生吸空和負壓,必須增設補油裝置。液控單向閥作為充油閥使用,以完成補油功能。
      (6)組合成換向閥。
      在設計液壓回路時,有時可將液控單向閥組合成換向閥使用。例如:用兩個液控單向閥和一個單向閥并聯(單向閥居中),則相當于一個三位三通換向閥的換向回路。需要指出,控制壓力油油口不工作時,應使其通回油箱,否則控制活塞難以復位,單向閥反向不能截止液流。
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      止回閥是指依靠介質本身流動而自動開、閉閥瓣,用來防止介質倒流的閥門,又稱逆止閥、單向閥、逆流閥、和背壓閥。止回閥屬于一種自動閥門,其主要作用是防止介質倒流、防止泵及驅動電動機反轉,以及容器介質的泄放。

      工作原理
      止回閥還可用于給其中的壓力可能升至超過系統壓的輔助系統提供補給的管路上。止回閥主要可分為旋啟式止回閥(依重心旋轉)與升降式止回閥(沿軸線移動)。
      止回閥這種類型的閥門的作用是只允許介質向一個方向流動,而且阻止反方向流動。通常這種閥門是自動工作的,在一個方向流動的流體壓力作用下,閥瓣打開;流體反方向流動時,由流體壓力和閥瓣的自重合閥瓣作用于閥座,從而切斷流動。
      其中止回閥就屬于這種類型的閥門,它包括旋啟式止回閥和升降式止回閥。旋啟式止回閥有一介鉸鏈機構,還有一個像門一樣的閥瓣自由地靠在傾斜的閥座表面上。為了確保閥瓣每次都能到達閥座面的合適位置,閥瓣設計在鉸鏈機構,以便閥瓣具有足夠有旋啟空間,并使閥瓣真正的、全面的與閥座接觸。閥瓣可以全部用金屬制成,也可以在金屬上鑲嵌皮革、橡膠、或者采用合成覆蓋面,這取決于使用性能的要求。旋啟式止回閥在完全打開的狀況下,流體壓力幾乎不受阻礙,因此通過閥門的壓力降相對較小。升降式止回閥的閥瓣坐落位于閥體上閥座密封面上。此閥門除了閥瓣可以自由地升降之外,其余部分如同截止閥一樣,流體壓力使閥瓣從閥座密封面上抬起,介質回流導致閥瓣回落到閥座上,并切斷流動。根據使用條件,閥瓣可以是全金屬結構,也可以是在閥瓣架上鑲嵌橡膠墊或橡膠環的形式。像截止閥一樣,流體通過升降式止回閥的通道也是狹窄的,因此通過升降式止回閥的壓力降比旋啟式止回閥大些,而且旋啟式止回閥的流量受到的限制很少。
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      R900934757 Z4WE6E63-3X/EG24N9K4QMBG24
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      R901241323 Z4WE6E63-3X/EG24N9K72L
      R901366189 Z4WE6E63-3X/EG24N9K72LSO407
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      R900741714 Z4WE6E63-3X/EG24NEXZ2
      R900943505 Z4WE6E63-3X/EG24NK4
      R901004551 Z4WE6E63-3X/EG24NK4=CSA
      R900963337 Z4WE6E63-3X/EG24NK4=LB
      R900749845 Z4WE6E63-3X/EG24NK4QMAG24
      R901082598 Z4WE6E63-3X/EG24NK4QMAG24/V
      R901048058 Z4WE6E63-3X/EG48N9K4
      R901426330 Z4WE6E63-3X/EG96K4QMAG24/V
      R900619454 Z4WE6E63-3X/EG96N9K4
      R901149638 Z4WE6E63-3X/EG96N9K4/V
      R900954010 Z4WE6E63-3X/EG96NK4
      R901012521 Z4WE6E63-3X/EW110K4QMAG24
      R900964347 Z4WE6E63-3X/EW110N9K4
      R900941533 Z4WE6E63-3X/EW110N9K4/V
      R900758878 Z4WE6E63-3X/EW110N9K4=CSA
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      R901226535 Z4WE6E68-3X/EG24SO667
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      R900941535 Z4WE6E68-3X/EG24K4/V
      R901185456 Z4WE6E68-3X/EG24K4/V=CSA
      R900953228 Z4WE6E68-3X/EG24K4QMAG24
      R901437748 Z4WE6E68-3X/EG24K4QMAG24/V
      R901159663 Z4WE6E68-3X/EG24K4QMBG24
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      R900962572 Z4WE6E68-3X/EG24N9K4QMAG24/V
      R900939917 Z4WE6E68-3X/EG24N9K4QMAG24=LB
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      R901083242 Z4WE6E68-3X/EG96K4/V
      R900967970 Z4WE6E68-3X/EG96K4QMAG24
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      R901150496 Z4WE6E68-3X/EG96N9K4/V
      R901018641 Z4WE6E68-3X/EW100NK4
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      R900759174 Z4WE6E68-3X/EW110N9K4=CSA
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      R900962341 Z4WE6E68-3X/EW230N9K4
      R901104517 Z4WE6E68-3X/EW230N9K4/V
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      R901087021 Z4WE6X250-3X/EG24N9K4/V/60
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      R901134642 Z4WE6X250-3X/EG24N9K4QMBG24
      R901321748 Z4WE6X250-3X/EG24N9K4QMBG24/V
      R901339114 Z4WE6X250-3X/EG24N9K72L/V/60
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      R901324817 Z4WE6X250-3X/EG24N9K72LQMBG24/V
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      R901293720 Z4WE6X250-3X/EG96N9K4/V/60
      R901212720 Z4WE6X252-3X/EG24N9K4/60
      R901087024 Z4WE6X252-3X/EG24N9K4/V/60
      R901413916 Z4WE6X253-3X/EG125N9K4/V/60
      R901087027 Z4WE6X253-3X/EG24N9K4/V/60
      R901094447 Z4WE6X253-3X/EG24N9K4QMAG24/V/60
      R901087029 Z4WE6X255-3X/EG24N9K4/V/60
      R901329071 Z4WE6X255-3X/EG24N9K4/V/60SO86=KM
      R901350662 Z4WE6X256-3X/EG110N9K4/60
      R901198596 Z4WE6X256-3X/EG24N9K4/60
      R901087075 Z4WE6X256-3X/EG24N9K4/V/60
      R901233332 Z4WE6X256-3X/EG24N9K4QMBG24/60
      R901423339 Z4WE6X256-3X/EG24N9K4QMBG24/V/60
      R901243776 Z4WE6X259-3X/EG24N4K4SO64
      R901262129 Z4WE6X261-3X/EG24N9K4
      R901329873 Z4WE6X262-3X/OFEG24N9K4SO407
      R901416391 Z4WE6X264-3X/EG24NK4=PL
      R978918765 Z4WE6E63-3X/EG125N9K4/V
      R978901841 Z4WE6E63-3X/EG24NK4CSA
      R987056968 Z4WE6E63-3X/EW110K4QMAG24
      R978002811 Z4WE6E68-3X/CG125N9K4
      R978912318 Z4WE6E68-3X/EG12N9K4
      R978910641 Z4WE6E68-3X/EG24N9K4SO9
      R978908551 Z4WE6E68-3X/EG96NK4
      R978910642 Z4WE6E68-3X/EW110N9K4SO9
      力士樂REXROTH二位四通和三位四通方向閥,內部先導式,外部先導式Z4WH 10
      R900504961 Z4WH10E51-4X/
      R901432746 Z4WH10E51-4X/QMBG24
      R900590053 Z4WH10E63-4X/
      R900928019 Z4WH10E63-4X//V
      R900598852 Z4WH10E63-4X/J
      R900786528 Z4WH10E63-4X/QMAG24
      R900528049 Z4WH10E68-4X/
      R900590076 Z4WH10E68-4X/SO5
      R901221044 Z4WH10X163-4X/
      R901440445 Z4WH10X163-4X/QMAG24
      R978899941 Z4WH10E63-4X/VSO43A-1482
      REXROTH單向閥Z2S6A2-6X/
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