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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(wěn)壓，系統(tǒng)卸荷和保護作用。定壓溢流作用：在定量泵節(jié)流調節(jié)系統(tǒng)中，定量泵提供的是恒定流量。當系統(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(tǒng)正常工作時，閥門關閉。只有負載超過規(guī)定的（系統(tǒng)壓力超過調定壓力）時開啟溢流，進行過載保護，使系統(tǒng)壓力不再增加（通常使溢流閥的調定壓力比系統(tǒng)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(tǒng)中流量的調節(jié)。以下是詳細介紹：

溢流閥主要由閥體、閥芯、彈簧和調節(jié)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(tǒng)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(wěn)定系統(tǒng)壓力。當系統(tǒng)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(xù)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(tǒng)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(jié)壓力

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