DBDS10K1X/200溢流閥現(xiàn)貨

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DBDS10K1X/200溢流閥現(xiàn)貨

性能

(1)調(diào)壓范圍：它是指減壓閥輸出壓力P2的可調(diào)范圍，在此范圍內(nèi)要求達(dá)到規(guī)定的精度。調(diào)壓范圍主要與調(diào)壓彈簧的剛度有關(guān)。

(2)壓力特性：它是指流量g為定值時，因輸入壓力波動而引起輸出壓力波動的特性。輸出壓力波動越小，減壓閥的特性越好。輸出壓力必須低于輸入壓力—定值才基本上不隨輸入壓力變化而變化。

(3)流量特性：它是指輸入壓力—定時，輸出壓力隨輸出流量g的變化而變化的持性。當(dāng)流量g發(fā)生變化時，輸出壓力的變化越小越好。一般輸出壓力越低，它隨輸出流量的變化波動就越小

減壓閥

減壓閥是利用液流流過縫隙產(chǎn)生壓力損失，使其出口壓力低于進口壓力的壓力控制閥。

按調(diào)節(jié)要求不同，有定值減壓閥，定差減壓閥，定比減壓閥。

定值減壓閥的結(jié)構(gòu)原理

減壓閥起減壓作用且保證出口壓力為定值的條件是:當(dāng)出口壓力大于減壓閥的調(diào)定壓力，使其先導(dǎo)閥開啟。

直動式減壓閥

減壓閥的功用與特點：

減壓閥用在液壓系統(tǒng)中獲得壓力低于系統(tǒng)壓力的二次油路上

與溢流閥比較:

減壓閥是出口壓力控制，保證出口壓力為定值;溢流閥是進口壓力控制，保證進口壓力為定值。

減壓閥閥口常開;

溢流閥閥口常閉。

減壓閥有單獨的泄油口;溢流閥彈簧腔的泄漏油經(jīng)閥體

內(nèi)流道內(nèi)泄至出口。

減壓閥與溢流閥-樣有遙控口。

溢流閥一般有兩種結(jié)構(gòu)：1、直動型溢流閥 。2、先導(dǎo)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(dǎo)型溢流閥的導(dǎo)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(dǎo)型溢流閥要在先導(dǎo)閥和主閥都動作后才能起控制作用，因此反應(yīng)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��；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)。

DBDS10K1X/200溢流閥現(xiàn)貨

DBD型泄壓閥為直動式座閥。它們用于限制系統(tǒng)壓力。

閥門主要由套筒（1），彈簧（2），帶阻尼活塞的提升閥芯（3）（壓力等級25 bar…400 bar）或球（4）（壓力等級630 bar）和調(diào)節(jié)類型（5）組成。系統(tǒng)壓力可以通過調(diào)節(jié)類型（5）進行無級調(diào)節(jié)。彈簧（2）將提升閥芯（3）或球（4）推到閥座上。通道P已連接到系統(tǒng)。系統(tǒng)中存在的壓力作用在提升閥表面（或球）上。如果通道P中的壓力超過彈簧（2）上設(shè)定的值，則提升閥芯（3）或球（4）靠著彈簧（2）打開�，F(xiàn)在，來自通道P的液壓流體流入通道T。提動閥芯（3）的行程受到壓紋（6）的限制。

為了在整個壓力范圍內(nèi)實現(xiàn)良好的壓力調(diào)節(jié)，已將整個壓力范圍分為7個壓力等級。一個壓力額定值對應(yīng)于可以通過該彈簧設(shè)定的較大工作壓力的某一彈簧。

注意事項：

調(diào)整類型（5）的構(gòu)造使其不會丟失。通過萬向支架安裝，在完全卸載的情況下，調(diào)節(jié)元件在調(diào)節(jié)類型（5）中保持松動（可移動）。

額定壓力為“ 25”：如果盡管完全卸載了調(diào)節(jié)類型，但仍未達(dá)到較小壓力，則由于彈簧和/或復(fù)位力較低，必須將調(diào)節(jié)元件“拉回”到擋塊。

為了進行壓力調(diào)節(jié)/增加，可以再次擰入調(diào)節(jié)元件。

鍵入DBDS..K1X /…

版本壓力等級25…400 bar（提升座閥）

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換向閥主要由閥體、密封組件、凸輪、閥桿、手柄和閥蓋等零部件組成(圖1)。閥門由手柄驅(qū)動，通過手柄帶動閥桿與凸輪旋轉(zhuǎn)，凸輪具有定位驅(qū)動與鎖定密封組件的開啟與關(guān)閉功能。手柄逆時針旋轉(zhuǎn)，兩組密封組件分別在凸輪的作用下關(guān)閉下端的兩個通道，上端的兩個通道分別與管道裝置的進口相通。反之，上端的兩個通道關(guān)閉，下端兩個通道與管道裝置的進口相通，實現(xiàn)了不停車換向。