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DBW10A1-52/200-6EG24N9K4 型號齊全                                                                                    REXROTH一種液壓壓力控制閥。在液壓設備中主要起定壓溢流作用，穩壓，統卸荷和安全保護作用。
定壓溢流作用：在定量泵節
流調節系統中，定量泵提供的
是恒定流量。當系統壓力增大時，
會使流量需求減小。此時溢流閥開啟，
使多余流量溢回油箱，保證溢流閥進口壓力，
即泵出口壓力恒定（閥口常隨壓力波動開啟）。
穩壓作用：溢流閥串聯在回油路上，溢流閥產生背壓，
運動部件平穩性增加。系統卸荷作用：在溢流閥的
遙控口串接溢小流量的電磁閥，當電磁鐵通電時，
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。安全保護作用：
系統正常工作時，閥門關閉。
只有負載超過規定的極限（系統壓力超過調定壓力）時開啟溢流，
進行過載保護，使系統壓力不再增加
（通常使溢流閥的調定壓力比系統高工作壓力高10%～20%）。
實際應用中一般有：作卸荷閥用，作遠程調壓閥，
作高低壓多級控制閥，作順序閥，用于產生背壓（串在回油路上）。
溢流閥一般有兩種結構：1、直動型溢流閥?。2、先導式溢流閥。
對溢流閥的主要要求：調壓范圍大，調壓偏差小，壓力振擺小，
動作靈敏，過載能力大，噪聲小。                                                                                        4WEH22-H7X/6EG24N9TS2K4
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