DBW10A1-52/200-6EG24N9K4 型號齊全                                                                                    REXROTH一種液壓壓力控制閥。在液壓設(shè)備中主要起定壓溢流作用，穩(wěn)壓，統(tǒng)卸荷和安全保護(hù)作用。
定壓溢流作用：在定量泵節(jié)
流調(diào)節(jié)系統(tǒng)中，定量泵提供的
是恒定流量。當(dāng)系統(tǒng)壓力增大時，
會使流量需求減小。此時溢流閥開啟，
使多余流量溢回油箱，保證溢流閥進(jìn)口壓力，
即泵出口壓力恒定（閥口常隨壓力波動開啟）。
穩(wěn)壓作用：溢流閥串聯(lián)在回油路上，溢流閥產(chǎn)生背壓，
運動部件平穩(wěn)性增加。系統(tǒng)卸荷作用：在溢流閥的
遙控口串接溢小流量的電磁閥，當(dāng)電磁鐵通電時，
溢流閥的遙控口通油箱，此時液壓泵卸荷。
溢流閥此時作為卸荷閥使用。安全保護(hù)作用：
系統(tǒng)正常工作時，閥門關(guān)閉。
只有負(fù)載超過規(guī)定的極限（系統(tǒng)壓力超過調(diào)定壓力）時開啟溢流，
進(jìn)行過載保護(hù)，使系統(tǒng)壓力不再增加
（通常使溢流閥的調(diào)定壓力比系統(tǒng)高工作壓力高10%～20%）。
實際應(yīng)用中一般有：作卸荷閥用，作遠(yuǎn)程調(diào)壓閥，
作高低壓多級控制閥，作順序閥，用于產(chǎn)生背壓（串在回油路上）。
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。                                                                                        4WEH22-H7X/6EG24N9TS2K4
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