4WE6E70/HG24N9K4 24VDC電磁換向閥 德國博世力士樂REXROTH電磁閥 電磁換向閥

庫存現(xiàn)貨力士樂液壓元件: 柱塞泵A10VSO、電磁閥4WE、電磁閥3WE、溢流閥DBW、DBDS、DB、3DR、節(jié)流閥Z2S、Z2F、葉片泵PV7、PVV、齒輪泵PH2,PH4,PGF、HM20/HM17壓力傳感器、壓力繼電器HED、博世放大器、放大板 、閥0811、0820 、齒輪泵0510、減壓閥DR、ZDR、4WREE,馬達伺服驅(qū)動 電機等系列產(chǎn)品

4WE6E70/HG24N9K4 24VDC電磁換向閥

電磁換向閥

工作原理:

利用電磁鐵的通電吸合與斷電釋放而直接推動閥芯來控制液流方向的。

類型:

交流(D,36V或220V或380V)

直流(E,24V或100V )

干式、濕式

交流電磁鐵:使用電壓為交流110、220、380V。特點是啟動力大，不需要專門的電源，吸合、釋放快，動作時間約為0.01 ~0.03s。缺點是電源電壓下降15%以上，電磁鐵吸力明顯減小，若銜鐵不動作，干式電磁鐵會在10~15min (濕式1~1.5h) 后燒壞線圈，且沖擊及噪聲大，壽命低，允許切換頻率為10次1分。

直流電磁鐵:使用電壓為直流110和24V,工作可靠，吸合釋放時間約為0.05~ 0.08s,切換頻率般為120次/分，沖擊小、體積小、壽命長，但需要專門的直流電源，成本高。

交流本整型電磁鐵:電磁鐵是直流的，電磁鐵本身帶整流器，通入交流電經(jīng)整流后再供給直流電磁鐵。

干式電磁鐵:電磁鐵線圈、鐵芯與軛鐵處于空氣中而不和油液接觸。電磁鐵與閥連接時，在推桿處設(shè)置密封圈，避免了油液進入電磁鐵，而且裝拆方便。為了防止回油進入干式電磁鐵中，要求換向閥的回油壓力不能太高。

WE型換向閥是由電磁鐵控制的滑閥式換向閥，它主要用于控制液體的通斷和流動方向。

其結(jié)構(gòu)主要是由閥體、電磁鐵、滑閥以及復位彈簧等組成。在不通電的情況下被復位彈簧保持在中間位置或初始位置上(脈沖閥除外)。電磁鐵的推力通過推桿作用在滑閥上，并且把它從靜止位置推到工作位置上(終端位置)，由此改變了液流的方向P→A和B→T或者P→B和A→T。當電磁鐵斷電后，滑閥被復位彈簧重新推到原來的靜止位置上。在電磁鐵斷電時，用故障檢查按鈕推動滑閥移動。

4WE6E70/HG24N9K4 24VDC電磁換向閥

WE 型換向閥是電磁驅(qū)動換向閥，可用作電動液壓元件。它們控制流的開始、停止和方向。

方向閥基本上由外殼 (1)、一個或兩個電子螺線管 (2)、控制閥芯 (3) 和復位彈簧 (4) 組成。

在斷電狀態(tài)下，控制閥芯 (3) 被復位彈簧 (4) 保持在中間位置或初始位置（“O”型除外）。

如果濕銷電子螺線管 (2) 通電，則控制閥芯 (3) 從其靜止位置移至所需的終端位置。通過這種方式，根據(jù)所選符號釋放所需的流動方向。

電子螺線管 (2) 關(guān)閉后，控制閥芯 (3) 被推回其中心位置或初始位置（帶“OF”棘爪的閥門和不帶“O”型彈簧的閥門除外）。

手動超控 (5) 允許在電磁閥不通電的情況下手動切換閥門。

為了正常運行，液壓系統(tǒng)必須正確放氣。

無彈簧復位“O”（僅適??用于符號 A、C 和 D）

此版本是一個方向閥，帶有兩個閥芯位置和兩個不帶棘爪的電子螺線管�？刂崎y芯 (3) 上沒有彈簧復位的閥門在斷電狀態(tài)下沒有定義的基本位置。

4WE6E70/HG24N9K4 24VDC電磁換向閥型號

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力士樂REXROTH定向滑閥，直接操作，順利切換，電磁驅(qū)動WE 6...73...A12

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減壓閥是通過調(diào)節(jié)，將進口壓力減至某一需要的出口壓力，并依靠介質(zhì)本身的能量，使出口壓力自動保持穩(wěn)定的閥門。從流體力學的觀點看，減壓閥是一個局部阻力可以變化的節(jié)流元件，即通過改變節(jié)流面積，使流速及流體的動能改變，造成不同的壓力損失，從而達到減壓的目的。然后依靠控制與調(diào)節(jié)系統(tǒng)的調(diào)節(jié)，使閥后壓力的波動與彈簧力相平衡，使閥后壓力在一定的誤差范圍內(nèi)保持恒定。