先導(dǎo)式溢流閥的工作原理: 工作時,液壓力同時作用于主閥芯及先導(dǎo)閥芯的測壓面上。當(dāng)先導(dǎo)閥1未打開時,閥腔中油液沒有流動,作用在主閥芯6上下兩個方向的壓力相等,但因上端面的有效受壓面積A2大于下端面的有效受壓面積A1,主閥芯在合力的作用下處于最下端位置,閥口關(guān)閉。當(dāng)進油壓力增大到使先導(dǎo)閥打開時,液流通過主閥芯上的阻尼孔5、先導(dǎo)閥1流回油箱。由于阻尼孔的阻尼作用,使主閥芯6所受到的上下兩個方向的液壓力不相等,主閥芯在壓差的作用下上移,打開閥口,實現(xiàn)溢流,并維持壓力基本穩(wěn)定。調(diào)節(jié)先導(dǎo)閥的調(diào)壓彈簧9,便可調(diào)整溢流壓力。
先導(dǎo)式溢流閥的工作原理是:其主閥芯為帶有圓柱面的錐閥。為使主閥關(guān)閉時有良好的密封性,要求主閥芯1的圓柱導(dǎo)向面和圓錐面與閥套配合良好,兩處的同心度要求較高,故稱二節(jié)同心。主閥芯上沒有阻尼孔,而將三個阻尼孔2、3、4分別設(shè)在閥體10和先導(dǎo)閥體6上。一般是由先導(dǎo)式溢流閥加上一個2位2通電磁閥組成。這個電磁閥實際上由兩部分組成:2位2通的液壓閥部分,加上一個電磁鐵。2位2通閥是開通,還是關(guān)閉,是由電磁鐵推動閥芯運動來實現(xiàn)的。有的閥電磁鐵通電時打開,有的閥電磁鐵斷電時打開。
)直接動作式溢流閥結(jié)構(gòu)簡單,制造精度要求不高、成本低、阻力小、動作比較靈敏、壓力超調(diào)量比較小,但達到穩(wěn)定過程較長。
注意其壓力滯后現(xiàn)象嚴重,控制壓力受溢流流量的影響較大,容易產(chǎn)生振動,特別是在接近關(guān)閉時,不適于在高壓、大流量下工作。
2)先導(dǎo)型溢流閥的靈敏度和響應(yīng)速度比直動型閥低些,而調(diào)壓精度比直動型溢流閥高。
注意其廣泛用于高壓、大流量和調(diào)壓精度要求較高的場合。
3) P型低壓溢流閥最大壓力2. 5MPa; Y型中壓溢流閥最大壓力6.3MPa; YF型滋流閥最大壓力7一35MPa; HY型卸荷溢流閥最大壓力0.6-32MPa; YE型直流電磁滋流閥最大壓力6.3MPa; YFD型電磁溢流閥和YFE電磁溢流閥最大壓力 0.6-32MPa。
北京華德液壓全系列 具體型號及報價請聯(lián)系客服
北京華德先導(dǎo)式溢流閥部分型號:
DB10B-1-30B/100Y DB20A-3-30B/100Y
DB10B-1-30B/200 DB20A-3-30B/200
DB10B-1-30B/200X DB20A-3-30B/200X
DB10B-1-30B/200XY DB20A-3-30B/200XY
DB10B-1-30B/200Y DB20A-3-30B/200Y
DB10B-1-30B/315 DB20A-3-30B/315
DB10B-1-30B/315X DB20A-3-30B/315X
DB10B-1-30B/315XY DB20A-3-30B/315XY
DB10B-1-30B/315Y DB20A-3-30B/315Y
DB10B-1-30B/50 DB20A-3-30B/50
DB10B-1-30B/50X DB20A-3-30B/50X
DB10B-1-30B/50XY DB20A-3-30B/50XY
DB10B-1-30B/50Y DB20A-3-30B/50Y
DB10K1-40B/100Y DB20B-1-30B/100
DB10K1-40B/200Y DB20B-1-30B/100X
DB10K1-40B/315Y DB20B-1-30B/100XY
DB10K1-40B/50Y DB20B-1-30B/100Y
DB10K2-40B/100Y DB20B-1-30B/50
DB10K2-40B/200Y DB20B-1-30B/50X
DB10K2-40B/315Y DB20B-1-30B/50XY
DB10K2-40B/50Y DB20B-1-30B/50Y
DB15G-1-50B/150 DB20B-2-30B/200
DB15G-1-50B/200 DB20B-2-30B/200X
DB15G-1-50B/315 DB20B-2-30B/200XY
DB15G-1-50B/50 DB20B-2-30B/200Y
DB15G-2-50B/150 DB20B-2-30B/315
DB15G-2-50B/200 DB20B-2-30B/315X
DB15G-2-50B/315 DB20B-2-30B/315XY
DB15G-2-50B/50 DB20B-2-30B/315Y
北京華德液壓全系列 具體型號及報價請聯(lián)系客服
北京華德先導(dǎo)式溢流閥部分型號:
DB20-1-30B/100 DB20B-3-30B/100
DB20-1-30B/200 DB20B-3-30B/100X
DB20-1-30B/315 DB20B-3-30B/100XY
DB20-1-30B/50 DB20B-3-30B/100Y
DB20-2-30B/100 DB20B-3-30B/50
DB20-2-30B/200 DB20B-3-30B/50X
DB20-2-30B/315 DB20B-3-30B/50XY
DB20-2-30B/50 DB20B-3-30B/50Y
DB20A-1-30B/200 DB20K1-10B/100Y
DB20A-1-30B/200X DB20K1-10B/200Y
DB20A-1-30B/200XY DB20K1-10B/315Y
DB20A-1-30B/200Y DB20K1-10B/50Y
DB20A-1-30B/315 DB20K2-10B/100Y
DB20A-1-30B/315X DB20K2-10B/200Y
DB20A-1-30B/315XY DB20K2-10B/315Y
DB20A-1-30B/315Y DB20K2-10B/50Y
DB20A-2-30B/100 DB20K3-10B/100XY
DB20A-2-30B/100X DB20K3-10B/200XY
DB20A-2-30B/100XY DB20K3-10B/315XY
DB20A-2-30B/100Y DB20K3-10B/50XY
DB20A-2-30B/200 DB20K7-10B/100XY
DB20A-2-30B/200X DB20K7-10B/200XY
DB20A-2-30B/200XY DB20K7-10B/315XY
DB20A-2-30B/200Y DB20K7-10B/50XY
DB20A-2-30B/315 DB30-1-30B/100
DB20A-2-30B/315X DB30-1-30B/200
DB20A-2-30B/315XY DB30-1-30B/315
DB20A-2-30B/315Y DB30-1-30B/50
北京華德液壓全系列 具體型號及報價請聯(lián)系客服
北京華德先導(dǎo)式溢流閥部分型號:
DB20A-2-30B/50 DB30-1-50B/100
DB20A-2-30B/50X DB30-1-50B/200
DB20A-2-30B/50XY DB30-1-50B/315
DB20A-2-30B/50Y DB30-1-50B/50
DB20A-3-30B/100 DB30-2-30B/100
DB20A-3-30B/100X DB30-2-30B/200
DB20A-3-30B/100XY DB30-2-30B/315
DB30B-1-30B/200Y DB30-2-30B/50
DB30B-1-30B/315 DB30-2-50B/100
DB30B-1-30B/315X DB30-2-50B/200
DB30B-1-30B/315XY DB30-2-50B/315
DB30B-1-30B/315Y DB30-2-50B/50
DB30B-1-30B/50 DB30A-1-30B/200
DB30B-1-30B/50X DB30A-1-30B/200X
DB30B-1-30B/50XY DB30A-1-30B/200XY
DB30B-1-30B/50Y DB30A-1-30B/200Y
DB30B-3-30B/100 DB30A-1-30B/315
DB30B-3-30B/100X DB30A-1-30B/315X
DB30B-3-30B/100XY DB30A-1-30B/315XY
DB30B-3-30B/100Y DB30A-1-30B/315Y
DB30B-3-30B/200 DB30AG-2-50B/100
DB30B-3-30B/200X DB30AG-2-50B/100X
DB30B-3-30B/200XY DB30AG-2-50B/100XY
北京華德液壓全系列 具體型號及報價請聯(lián)系客服
北京華德先導(dǎo)式溢流閥部分型號:
DB30B-3-30B/200Y DB30AG-2-50B/100Y
DB30B-3-30B/315 DB30AG-2-50B/200
DB30B-3-30B/315X DB30AG-2-50B/200X
DB30B-3-30B/315XY DB30AG-2-50B/200XY
DB30B-3-30B/315Y DB30AG-2-50B/200Y
DB30B-3-30B/50 DB30AG-2-50B/315
DB30B-3-30B/50X DB30AG-2-50B/315X
DB30B-3-30B/50XY DB30AG-2-50B/315XY
DB30B-3-30B/50Y DB30AG-2-50B/315Y
DB30G-1-30B/100 DB30AG-2-50B/50
DB30G-1-30B/200 DB30AG-2-50B/50X
DB30G-1-30B/315 DB30AG-2-50B/50XY
DB30G-1-30B/50 DB30AG-2-50B/50Y
DB30G-1-50B/100 DB30B-1-30B/100
DB30G-1-50B/200 DB30B-1-30B/100X
DB30G-1-50B/315 DB30B-1-30B/100XY
DB30G-1-50B/50 DB30B-1-30B/100Y
DB30G-2-30B/100 DB30B-1-30B/200
DB30G-2-30B/200 DB30B-1-30B/200X
DB30G-2-30B/315 DB30B-1-30B/200XY
DB30G-2-30B/50 DB30B-1-30B/200Y
DB30G-2-50B/100 DB30B-1-30B/315
DB30G-2-50B/200 DB30B-1-30B/315X
DB30G-2-50B/315 DB30B-1-30B/315XY
DB30G-2-50B/50 DB30B-1-30B/315Y
北京華德液壓全系列 具體型號及報價請聯(lián)系客服
北京華德先導(dǎo)式溢流閥部分型號:
DB3U10E-1-30B/100G24NZ5L DB3U20E-2-30B/315YW220-50NZ4
DB3U10E-1-30B/100W220-50NZ5L DB3U20E-2-30B/315YW220-50NZ5
DB3U10E-1-30B/100XYG24NZ4 DB3U20E-2-30B/315YW220-50NZ5L
DB3U10E-1-30B/100XYG24NZ5 DB3U20E-3-30B/315G24NZ4
DB3U10E-1-30B/100XYG24NZ5L DB3U20E-3-30B/315G24NZ5
DB3U10E-1-30B/100XYW220-50NZ4 DB3U20E-3-30B/315G24NZ5L
DB3U10E-1-30B/100XYW220-50NZ5 DB3U20E-3-30B/315W220-50NZ4
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DB3U10E-1-30B/100YG24NZ4 DB3U20E-3-30B/315W220-50NZ5L
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DB3U10E-1-30B/100YG24NZ5L DB3U20E-3-30B/315XG24NZ5
DB3U10E-1-30B/100YW220-50NZ4 DB3U20E-3-30B/315XG24NZ5L
DB3U10E-1-30B/100YW220-50NZ5 DB3U20E-3-30B/315XW220-50NZ4
DB3U10E-1-30B/100YW220-50NZ5L DB3U20E-3-30B/315XW220-50NZ5
DB3U10E-1-30B/315G24NZ5L DB3U20E-3-30B/315XW220-50NZ5L
DB3U10E-1-30B/315W220-50NZ5L DB3U20E-3-30B/315XYG24NZ4
DB3U10E-2-30B/100G24NZ4 DB3U20E-3-30B/315XYG24NZ5
DB3U10E-2-30B/100G24NZ5 DB3U20E-3-30B/315XYG24NZ5L
DB3U10E-2-30B/100G24NZ5L DB3U20E-3-30B/315XYW220-50NZ4
DB3U10E-2-30B/100W220-50NZ4 DB3U20E-3-30B/315XYW220-50NZ5
DB3U10E-2-30B/100W220-50NZ5 DB3U20E-3-30B/315XYW220-50NZ5L
DB3U10E-2-30B/100W220-50NZ5L DB3U20E-3-30B/315YG24NZ4
DB3U10E-2-30B/100XYG24NZ4 DB3U20E-3-30B/315YG24NZ5
DB3U10E-2-30B/100XYG24NZ5 DB3U20E-3-30B/315YG24NZ5L
DB3U10E-2-30B/100XYG24NZ5L DB3U20E-3-30B/315YW220-50NZ4
DB3U10E-2-30B/100XYW220-50NZ4 DB3U20E-3-30B/315YW220-50NZ5
DB3U10E-2-30B/100XYW220-50NZ5 DB3U20E-3-30B/315YW220-50NZ5L
DB3U10E-2-30B/100XYW220-50NZ5L DB3U20H-1-30B/100G24NZ4
北京華德液壓全系列 具體型號及報價請聯(lián)系客服 淘寶
北京華德先導(dǎo)式溢流閥部分型號:
DB3U10E-2-30B/315G24NZ4 DB3U20H-1-30B/100G24NZ5
DB3U10E-2-30B/315G24NZ5 DB3U20H-1-30B/100G24NZ5L
DB3U10E-2-30B/315G24NZ5L DB3U20H-1-30B/100W220-50NZ4
DB3U10E-2-30B/315W220-50NZ4 DB3U20H-1-30B/100W220-50NZ5
DB3U10E-2-30B/315W220-50NZ5 DB3U20H-1-30B/100W220-50NZ5L
DB3U10E-2-30B/315W220-50NZ5L DB3U20H-1-30B/100XG24NZ4
DB3U10E-2-30B/315XYG24NZ4 DB3U20H-1-30B/100XG24NZ5
DB3U10E-2-30B/315XYG24NZ5 DB3U20H-1-30B/100XG24NZ5L
DB3U10E-2-30B/315XYG24NZ5L DB3U20H-1-30B/100XW220-50NZ4
DB3U10E-2-30B/315XYW220-50NZ4 DB3U20H-1-30B/100XW220-50NZ5
DB3U10E-2-30B/315XYW220-50NZ5 DB3U20H-1-30B/100XW220-50NZ5L
DB3U10E-2-30B/315XYW220-50NZ5L DB3U20H-1-30B/100XYG24NZ4
DB3U10E-2-30B/315YG24NZ4 DB3U20H-1-30B/100XYG24NZ5
DB3U10E-2-30B/315YG24NZ5 DB3U20H-1-30B/100XYG24NZ5L
DB3U10E-2-30B/315YG24NZ5L DB3U20H-1-30B/100XYW220-50NZ4
DB3U10E-2-30B/315YW220-50NZ4 DB3U20H-1-30B/100XYW220-50NZ5
DB3U10E-2-30B/315YW220-50NZ5 DB3U20H-1-30B/100XYW220-50NZ5L
DB3U10E-2-30B/315YW220-50NZ5L DB3U20H-1-30B/100YG24NZ4
DB3U10E-3-30B/100G24NZ5L DB3U20H-1-30B/100YG24NZ5
DB3U10E-3-30B/100W220-50NZ5L DB3U20H-1-30B/100YG24NZ5L
DB3U10E-3-30B/100XYG24NZ4 DB3U20H-1-30B/100YW220-50NZ4
DB3U10E-3-30B/100XYG24NZ5 DB3U20H-1-30B/100YW220-50NZ5
DB3U10E-3-30B/100XYG24NZ5L DB3U20H-1-30B/100YW220-50NZ5L
DB3U10E-3-30B/100XYW220-50NZ4 DB3U20H-2-30B/100G24NZ4
DB3U10E-3-30B/100XYW220-50NZ5 DB3U20H-2-30B/100G24NZ5
DB3U10E-3-30B/100XYW220-50NZ5L DB3U20H-2-30B/100G24NZ5L
DB3U10E-3-30B/100YG24NZ4 DB3U20H-2-30B/100W220-50NZ4
DB3U10E-3-30B/100YG24NZ5 DB3U20H-2-30B/100W220-50NZ5
DB3U10E-3-30B/100YG24NZ5L DB3U20H-2-30B/100W220-50NZ5L
北京華德液壓全系列 具體型號及報價請聯(lián)系客服
北京華德先導(dǎo)式溢流閥部分型號:
DB3U10E-3-30B/100YW220-50NZ4 DB3U20H-2-30B/100XG24NZ4
DB3U10E-3-30B/100YW220-50NZ5 DB3U20H-2-30B/100XG24NZ5
DB3U10E-3-30B/100YW220-50NZ5L DB3U20H-2-30B/100XG24NZ5L
DB3U10E-3-30B/315G24NZ4 DB3U20H-2-30B/100XW220-50NZ4
DB3U10E-3-30B/315G24NZ5 DB3U20H-2-30B/100XW220-50NZ5
DB3U10E-3-30B/315G24NZ5L DB3U20H-2-30B/100XW220-50NZ5L
DB3U10E-3-30B/315W220-50NZ4 DB3U20H-2-30B/100XYG24NZ4
DB3U10E-3-30B/315W220-50NZ5 DB3U20H-2-30B/100XYG24NZ5
DB3U10E-3-30B/315W220-50NZ5L DB3U20H-2-30B/100XYG24NZ5L
DB3U10E-3-30B/315XG24NZ4 DB3U20H-2-30B/100XYW220-50NZ4
DB3U10E-3-30B/315XG24NZ5 DB3U20H-2-30B/100XYW220-50NZ5
DB3U10E-3-30B/315XG24NZ5L DB3U20H-2-30B/100XYW220-50NZ5L
DB3U10E-3-30B/315XW220-50NZ4 DB3U20H-2-30B/100YG24NZ4
DB3U10E-3-30B/315XW220-50NZ5 DB3U20H-2-30B/100YG24NZ5
DB3U10E-3-30B/315XW220-50NZ5L DB3U20H-2-30B/100YG24NZ5L
DB3U10E-3-30B/315XYG24NZ4 DB3U20H-2-30B/100YW220-50NZ4
DB3U10E-3-30B/315XYG24NZ5 DB3U20H-2-30B/100YW220-50NZ5
DB3U10E-3-30B/315XYG24NZ5L DB3U20H-2-30B/100YW220-50NZ5L
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DB3U10E-3-30B/315XYW220-50NZ5 DB3U20H-3-30B/100G24NZ5
DB3U10E-3-30B/315XYW220-50NZ5L DB3U20H-3-30B/100G24NZ5L
DB3U10E-3-30B/315YG24NZ4 DB3U20H-3-30B/100W220-50NZ4
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DB3U10E-3-30B/315YG24NZ5L DB3U20H-3-30B/100W220-50NZ5L
DB3U10E-3-30B/315YW220-50NZ4 DB3U20H-3-30B/100XG24NZ4
DB3U10E-3-30B/315YW220-50NZ5 DB3U20H-3-30B/100XG24NZ5
DB3U10E-3-30B/315YW220-50NZ5L DB3U20H-3-30B/100XG24NZ5L
DB3U10H-1-30B/100G24NZ4 DB3U20H-3-30B/100XW220-50NZ4
DB3U10H-1-30B/100G24NZ5 DB3U20H-3-30B/100XW220-50NZ5
北京華德液壓全系列 具體型號及報價請聯(lián)系客服
北京華德先導(dǎo)式溢流閥部分型號:
DB3U10H-1-30B/100G24NZ5L DB3U20H-3-30B/100XW220-50NZ5L
DB3U10H-1-30B/100W220-50NZ4 DB3U20H-3-30B/100XYG24NZ4
DB3U10H-1-30B/100W220-50NZ5 DB3U20H-3-30B/100XYG24NZ5
DB3U10H-1-30B/100W220-50NZ5L DB3U20H-3-30B/100XYG24NZ5L
DB3U10H-1-30B/100XG24NZ4 DB3U20H-3-30B/100XYW220-50NZ4
DB3U10H-1-30B/100XG24NZ5 DB3U20H-3-30B/100XYW220-50NZ5
DB3U10H-1-30B/100XG24NZ5L DB3U20H-3-30B/100XYW220-50NZ5L
DB3U10H-1-30B/100XW220-50NZ4 DB3U20H-3-30B/100YG24NZ4
DB3U10H-1-30B/100XW220-50NZ5 DB3U20H-3-30B/100YG24NZ5
DB3U10H-1-30B/100XW220-50NZ5L DB3U20H-3-30B/100YG24NZ5L
DB3U10H-1-30B/100XYG24NZ4 DB3U20H-3-30B/100YW220-50NZ4
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