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力士樂溢流閥DBW10A1-5X/200-6EG24N9K4 R900941174現貨

REXROTH力士樂電磁溢流閥DBW10A1-5X/200-6EG24N9K4 R900941174 原裝我公司主營液壓氣動元件、工控備件！力士樂溢流閥DBW10A1-5X/200-6EG24N9K4 R900941174現貨

溢流閥是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，系統卸荷和保護作用。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。保護作用：系統正常工作時，閥門關閉。只有負載超過規定的（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。

溢流閥的工作原理主要基于壓力平衡和機械傳動原理，通過外部壓力的變化來實現液壓系統中流量的調節。以下是詳細介紹：

溢流閥主要由閥體、閥芯、彈簧和調節裝置組成。閥體上設有進口和出口通道以及溢流口當液壓系統的工作壓力超過溢流閥設定的壓力時，閥芯受到壓力作用向上移動，使溢流口從口通道中插入，形成溢流通道，允許流體流出，從而穩定系統壓力。當系統壓力降低到設定壓力范圍內時，閥芯在彈簧作用下向下移動，關閉溢流通道，阻止流體繼續溢流。先導式溢流閥由先導閥和主閥組成，先導閥控制壓力，主閥控制流量。當進口壓力超過調壓力時，先導閥打開，主閥內油液產生流動，實現溢流。直動式比例溢流閥利用比例電磁鐵產生的吸力與彈簧力和系統壓力作用在閥芯上的力平衡的

原理來工作。通過調整通入電磁鐵的電流大小，可以改變調壓閥的調節壓力

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力士樂溢流閥DBW10A1-5X/200-6EG24N9K4 R900941174現貨