4WE6E70/HG24N9K4 24VDC電磁換向閥

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(dá)伺服驅(qū)動(dòng) 電機(jī)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(dòng)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(diǎn)是啟動(dòng)力大，不需要專門的電源，吸合、釋放快，動(dòng)作時(shí)間約為0.01 ~0.03s。缺點(diǎn)是電源電壓下降15%以上，電磁鐵吸力明顯減小，若銜鐵不動(dòng)作，干式電磁鐵會(huì)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(shí)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(shí)，在推桿處設(shè)置密封圈，避免了油液進(jìn)入電磁鐵，而且裝拆方便。為了防止回油進(jìn)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(dòng)方向。

其結(jié)構(gòu)主要是由閥體、電磁鐵、滑閥以及復(fù)位彈簧等組成。在不通電的情況下被復(fù)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(dāng)電磁鐵斷電后，滑閥被復(fù)位彈簧重新推到原來的靜止位置上。在電磁鐵斷電時(shí)，用故障檢查按鈕推動(dòng)滑閥移動(dòng)。

4WE6E70/HG24N9K4 24VDC電磁換向閥

WE 型換向閥是電磁驅(qū)動(dòng)換向閥，可用作電動(dòng)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(gè)或兩個(gè)電子螺線管 (2)、控制閥芯 (3) 和復(fù)位彈簧 (4) 組成。

在斷電狀態(tài)下，控制閥芯 (3) 被復(fù)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(hào)釋放所需的流動(dòng)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(dòng)超控 (5) 允許在電磁閥不通電的情況下手動(dòng)切換閥門。

為了正常運(yùn)行，液壓系統(tǒng)必須正確放氣。

無彈簧復(fù)位“O”（僅適??用于符號(hào) A、C 和 D）

此版本是一個(gè)方向閥，帶有兩個(gè)閥芯位置和兩個(gè)不帶棘爪的電子螺線管。控制閥芯 (3) 上沒有彈簧復(fù)位的閥門在斷電狀態(tài)下沒有定義的基本位置。

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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(dòng)WE 6...73...A12

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減壓閥是通過調(diào)節(jié)，將進(jìn)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(dòng)保持穩(wěn)定的閥門。從流體力學(xué)的觀點(diǎn)看，減壓閥是一個(gè)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(dòng)能改變，造成不同的壓力損失，從而達(dá)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(dòng)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。