上海韋米機電設備有限公司

DBW10B2-52/200U6EG24N9K4電磁溢流閥 德國博世力士樂REXROTH電磁溢流閥 原裝現(xiàn)貨

我公司現(xiàn)貨供應博世力士樂（BOSCH-REXROTH）、阿托斯ATOS、派克Parker、迪普馬DUPLOMATIC、油研YUKEN;本特利bentley、貝加萊B&R、西門子、光洋KOYO，美國ASCO，美國PARKER派克 等系列進口產(chǎn)品 

DBW10B2-52/200U6EG24N9K4電磁溢流閥

DBW型壓力閥是先導式溢流閥。

它們用于限制和電磁驅(qū)動的卸載工作壓力。

該閥主要由帶主閥芯插件（3）的主閥（1）和帶壓力調(diào)節(jié)元件的先導控制閥（2）和一個集成的方向滑閥（16）組成。

 

該閥的功能與DB型閥基本相同。但是，主滑閥（3）的卸載是通過控制已安裝的方向滑閥（16）來實現(xiàn)的。

帶開關(guān)減震的安全閥（夾層板），型號“ DBW ... / .. S6 ... R12”

從B2到B1的連接的打開通過減震緩沖閥（17）延遲。因此避免了回流管路中的壓力峰值和聲學減壓沖擊。它安裝在先導控制閥（2）和方向閥（16）之間。

阻尼（減壓沖擊）的程度取決于噴嘴（18）的尺寸。建議使用Ø1.2mm的噴嘴（訂購代碼“ R12”）。

DBW10B2-52/200U6EG24N9K4電磁溢流閥

溢流閥是壓力控制閥。其作用主要是控制系統(tǒng)壓力，以保護油泵和油路系統(tǒng)的安全及保持油路系統(tǒng)的壓力恒定。通經(jīng)為8毫米的溢流閥是一個小型的直接動作的溢流閥，可以和主溢流閥的遙控口連接，對主溢流閥實現(xiàn)遠程壓力調(diào)節(jié)。溢流閥的遙控口經(jīng)換向閥和油箱連接時，可使油路卸荷。此時溢流閥起卸荷作用。溢流閥的遙控口串聯(lián)換向閥和通經(jīng)為8毫米的溢流閥時，可實現(xiàn)壓力的多級控制。更換溢流閥的調(diào)節(jié)彈簧，可改變其壓力調(diào)節(jié)范圍。手輪順時針轉(zhuǎn)動時，壓力升高。反之壓力降低。

DBW10B2-52/200U6EG24N9K4電磁溢流閥型號

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先導型溢流閥的特點

先導閥和主閥閥芯分別處于受力平衡，其閥口都滿足壓力流量方程。閥的進口壓力由兩次比較得到，壓力值主要由先導閥調(diào)壓彈簧的預壓縮量確定，主閥彈簀起復位作用。

通過先導閥的流量很小，是主閥額定流量的1%因此其尺寸很小，即使是高壓閥，其彈簧剛度也不大。這樣一來閥的調(diào)節(jié)性能有很大改善。

主閥芯開啟是利用液流流經(jīng)阻力孔形成的壓力差。阻力孔一般為細長孔，孔徑很小0=0.8~1.2mm,孔長I = 8~12mm,因此工作時易堵塞，一旦堵塞則導致主閥口常開無法調(diào)壓。

 

先導型溢流閥遙控口接法

先導閥前腔有一遙控口，在該控制口接遠程調(diào)壓閥可實現(xiàn)遠控，接電磁閥通回油箱可實現(xiàn)卸載。

遠程調(diào)壓閥實際上是一個單獨的壓力先導閥，旁接在先導型溢流閥遙控口起遠程調(diào)壓作用，其調(diào)定壓力必須低于先導閥的調(diào)定壓力。無論哪個起作用，泵的溢流量始終經(jīng)主閥閥口回油箱。

 

溢流閥的功用

溢流閥旁接在泵的出口，用來保證系統(tǒng)壓力恒定，稱為定壓閥。

溢流閥旁接在泵的出口，用來限制系統(tǒng)壓力的較大值，對系統(tǒng)起保護作用，稱為安全閥。

電磁溢流閥還可以在執(zhí)行機構(gòu)不工作時使泵卸載。

溢流閥一般有兩種結(jié)構(gòu)：1、直動型溢流閥 。2、先導式溢流閥。

對溢流閥的主要要求：調(diào)壓范圍大，調(diào)壓偏差小，壓力振擺小，動作靈敏，過載能力大，噪聲小。

先導型溢流閥的導閥部分結(jié)構(gòu)尺寸較小，調(diào)壓彈簧不必很強，因此壓力調(diào)整比較輕便。但因先導型溢流閥要在先導閥和主閥都動作后才能起控制作用，因此反應不如直動型溢流閥靈敏。

與三節(jié)同心結(jié)構(gòu)相比，二節(jié)同心結(jié)構(gòu)的特點是：①主閥芯僅與閥套和主閥座有同心度要求，免去了與閥蓋的配合，故結(jié)構(gòu)簡單，加工和裝配方便。②過流面積大，在相同流量的情況下，主閥開啟高度小；或者在相同開啟高度的情況下，其通流能力大，因此，可做得體積小、重量輕。③主閥芯與閥套可以通用化，便于批量生產(chǎn)。