力士樂(lè)溢流閥DB10-2-52/100是上海韋米機(jī)電設(shè)備有限公司優(yōu)勢(shì)供應(yīng)產(chǎn)品之一，銷(xiāo)售熱線： ；聯(lián)系人：雷青；在線QQ：---；移動(dòng)熱線： ；REXROTH品牌備件上海優(yōu)質(zhì)供應(yīng)商，現(xiàn)貨供應(yīng)。歡迎新老客戶來(lái)電咨詢采購(gòu)！

先導(dǎo)溢流閥的主閥上腔壓力，是由先導(dǎo)閥加于控制的。如果先導(dǎo)閥正常工作，即主閥上腔有先導(dǎo)閥規(guī)定的壓力，則整個(gè)溢流閥就會(huì)在系統(tǒng)壓力到達(dá)調(diào)定壓力時(shí)其主閥口打開(kāi)一定的開(kāi)度，一方面能將系統(tǒng)多余流量流回油箱，另一方面又能維持系統(tǒng)的壓力為先導(dǎo)閥的調(diào)定值。可見(jiàn)，先導(dǎo)閥主要管壓力，主閥服從先導(dǎo)閥的領(lǐng)導(dǎo)，在先導(dǎo)閥動(dòng)作時(shí)將主閥口開(kāi)到合適大小，正好將多余流量流出去，又不影響系統(tǒng)壓力。
 

溢流閥一般有兩種結(jié)構(gòu)：1、直動(dòng)型溢流閥 。2、先導(dǎo)式溢流閥。
對(duì)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(dòng)作靈敏，過(guò)載能力大，噪聲小。
先導(dǎo)型溢流閥的導(dǎo)閥部分結(jié)構(gòu)尺寸較小，調(diào)壓彈簧不必很強(qiáng)，因此壓力調(diào)整比較輕便。但因先導(dǎo)型溢流閥要在先導(dǎo)閥和主閥都動(dòng)作后才能起控制作用，因此反應(yīng)不如直動(dòng)型溢流閥靈敏。
與三節(jié)同心結(jié)構(gòu)相比，二節(jié)同心結(jié)構(gòu)的特點(diǎn)是：①主閥芯僅與閥套和主閥座有同心度要求，免去了與閥蓋的配合，故結(jié)構(gòu)簡(jiǎn)單，加工和裝配方便。②過(guò)流面積大，在相同流量的情況下，主閥開(kāi)啟高度小；或者在相同開(kāi)啟高度的情況下，其通流能力大，因此，可做得體積小、重量輕。③主閥芯與閥套可以通用化，便于組織批量生產(chǎn)。
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R900508745 DB20G2-5X/100B
R901042182 DB20G2-5X/100D
R901041131 DB20G2-5X/100E
R900548323 DB20G2-5X/100U
R900525464 DB20G2-5X/100V
R900500054 DB20G2-5X/100X
R901104324 DB20G2-5X/100XU
R900539461 DB20G2-5X/100XY
R900597784 DB20G2-5X/100Y
R901173269 DB20G2-5X/100YU
R900719241 DB20G2-5X/125B
R900546381 DB20G2-5X/150B
R901016952 DB20G2-5X/150E
R901130410 DB20G2-5X/160E
R900546382 DB20G2-5X/160VB
R901026423 DB20G2-5X/160VE
R900956557 DB20G2-5X/180B
力士樂(lè)溢流閥DB10-2-52/100

淺析先導(dǎo)式溢流閥與直動(dòng)型溢流閥的區(qū)別
溢流閥可分為直動(dòng)型和先導(dǎo)式兩類(lèi)。直動(dòng)型溢流閥是作用在閥芯上的主油路液壓力與調(diào)壓彈簧力直接相平衡的溢流閥。根據(jù)閥口和測(cè)壓面結(jié)構(gòu)形式不同，形成三種基本結(jié)構(gòu)。
先導(dǎo)式溢流閥：主閥彈簧主要用于克服閥芯的摩擦力，彈簧剛度小。當(dāng)溢流量變化引起主閥彈簧壓縮量變化時(shí)，彈簧力變化較小，因此閥進(jìn)口壓力變化也較小。調(diào)壓精度高，廣泛應(yīng)用于高壓、大流量系統(tǒng)。
溢流閥的閥芯在移動(dòng)過(guò)程中要受到摩擦力的作用，閥口開(kāi)大和關(guān)小時(shí)的摩擦力方向剛好相反，使溢流閥開(kāi)啟時(shí)的特性與關(guān)閉時(shí)的特性產(chǎn)生差異。
力士樂(lè)溢流閥DB10-2-52/100
力士樂(lè)先導(dǎo)式溢流閥DB(C/T)
R900502910 DB10G.-5X/...
R900500047 DB10G1-5X/100
R901024574 DB10G1-5X/100/12
R901427597 DB10G1-5X/100V
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R900573342 DB10-1-5X/50Y
R900780054 DB10-1-5X/50YU
力士樂(lè)溢流閥DB10-2-52/100