DBDS10K18/315 315BAR壓力溢流閥 德國博世力士樂REXROTH溢流閥 電磁溢流閥

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DBDS10K18/315 315BAR壓力溢流閥

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

直動式溢流閥是依靠系統(tǒng)中的壓力油直接作用在閥芯上與彈簧力等相平衡，以控制閥芯的啟閉動作，溢流閥是利用被控壓力作為信號來改變彈簧的壓縮量，從而改變閥口的通流面積和系統(tǒng)的溢流量來達(dá)到定壓目的的。當(dāng)系統(tǒng)壓力升高時,閥芯上升,閥口通流面積增加,溢流量加大，進(jìn)而使系統(tǒng)壓力下降。溢流閥內(nèi)部通過閥芯的平衡和運(yùn)動構(gòu)成的這種負(fù)反饋?zhàn)饔檬瞧涠▔鹤饔玫幕�本原��，也是所有定壓閥的基本工作原理。

壓力控制閥 按用途分為溢流閥﹑減壓閥和順序閥。(1)溢流閥：能控制液壓系統(tǒng)在達(dá)到調(diào)定壓力時保持恒定狀態(tài)。用於過載保護(hù)的溢流閥稱為安全閥。當(dāng)系統(tǒng)發(fā)生故障，壓力升高到可能造成破壞的限定值時，閥口會打開而溢流，以保證系統(tǒng)的安全。(2)減壓閥：能控制分支回路得到比主回路油壓低的穩(wěn)定壓力。減壓閥按它所控制的壓力功能不同，又可分為定值減壓閥(輸出壓力為恒定值)﹑定差減壓閥(輸入與輸出壓力差為定值)和定比減壓閥(輸入與輸出壓力間保持一定的比例)。

DBD 型泄壓閥是直動式溢流閥。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 (3)（壓力等級 25 bar … 400 bar）或球閥 (4)（壓力等級 630 bar）和調(diào)節(jié)類型 (5) 組成。系統(tǒng)壓力可通過調(diào)節(jié)類型 (5) 進(jìn)行無級設(shè)置。彈簧 (2) 將提升閥 (3) 或球 (4) 推到閥座上。通道 P 連接到系統(tǒng)。系統(tǒng)中存在的壓力作用在提升閥表面（或球體）上。如果通道 P 中的壓力超過彈簧 (2) 上設(shè)置的值，則提升閥 (3) 或球 (4) 會逆著彈簧 (2) 打開�，F(xiàn)在，液壓油從通道 P 流入通道 T。提升閥 (3) 的行程受到壓花 (6) 的限制。

為了在整個壓力范圍內(nèi)實(shí)現(xiàn)良好的壓力調(diào)節(jié)，整個壓力范圍分為7個壓力等級。一個壓力等級對應(yīng)于某個彈簧，用于可通過該彈簧設(shè)置的較好工作壓力。

溢流閥型號

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R900424150 DBDS10K1X/315

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R987330968 DBDS10K1X/315S??DETTYN?250BAR

R901213169 DBDS10K1X/315-120

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R901424285 DBDS10K1X/315-255

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R901163730 DBDS10K1X/315-285

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R901352262 DBDS10K1X/315P240

WE型電磁換向閥采用濕式交流或直流電磁鐵。該閥是通過電磁鐵控制閥芯的不同工作位置。當(dāng)電磁鐵斷電時，閥芯靠彈簧壓力保持在中間或終端位置(脈沖式閥除外)。電磁鐵通電，閥芯被推到工作位置上，斷電后又恢復(fù)到初始狀態(tài)。這時用手推動故障檢查按鈕可使閥芯移動。

博世力士樂rexroth溢流閥 直動式溢流閥 DBDS6系列溢流閥大量現(xiàn)貨 特價供應(yīng)

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R900423732 DBDS6P1X/50

R900423730 DBDS6P1X/315

R900423729 DBDS6P1X/200

R900423728 DBDS6P1X/100

R900423727 DBDS6K1X/50

R900423726 DBDS6K1X/400

R900423725 DBDS6K1X/315

R900423724 DBDS6K1X/200

R900423723 DBDS6K1X/100

R900423722 DBDS6G1X/50

R900423719 DBDS6G1X/200

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