Z2S10-1-3X REXROTH單向閥 德國(guó)原裝力士樂REXROTH單向閥 電磁換向閥

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Z2S10-1-3X REXROTH單向閥

單向閥是氣流只能一個(gè)方向流動(dòng)而不能反向流動(dòng)的方向控制閥。其工作原理與液壓?jiǎn)蜗蜷y一樣。壓縮空氣從P口進(jìn)入，克服彈簧力和摩擦力使單向閥閥口開啟，壓縮空氣從P流至A；當(dāng)P口無(wú)壓縮空氣時(shí)，在彈簧力和A口(腔)余氣力作用下；閥口處于關(guān)閉狀 態(tài)，使從A至P氣流不通。單向閥應(yīng)用于不允許氣流反向流動(dòng)的場(chǎng)合，如空壓機(jī)向氣罐充氣 時(shí)，在空壓機(jī)與氣罐之間設(shè)置一單向閥，當(dāng)空壓機(jī)停止工作時(shí)，可防止氣罐中的壓縮空氣回流 到空壓機(jī)。單向閥還常與節(jié)流閥、順序閥等組合成單向節(jié)流閥、單向順序閥使用。

(單向閥)止回閥用途廣泛，有很多種類，下面說的是供水和熱力常用的止回閥：

1、彈簧式：液體由下而上，依靠壓力頂起彈簧控制的閥瓣，壓力消失后，彈簧力將閥瓣壓下，封閉液體倒流。常用于通徑較小的止回閥。

2、重力式：和彈簧式相似，依靠閥瓣的自身重力封閉，防止倒流。

3、旋啟式：液體在閥體內(nèi)直通，依靠壓力頂開一側(cè)的旋轉(zhuǎn)閥瓣，壓力失去后，閥瓣依靠自重回位，反向的液體壓力封閉閥瓣。

4.塑料隔膜式: 外殼和隔膜均為塑料.一般外殼為ABS,PE,PP,NYLON, PC.隔膜有硅樹脂,氟樹脂等。

其它的單向閥（止回閥），如排污的止回閥，人防的防爆閥和液體使用的止回閥的原理是大同小異。

節(jié)流閥和單向節(jié)流閥是簡(jiǎn)易的流量控制閥，它們?cè)诙�量泵液壓系統(tǒng)中的主要作用是與溢流閥配合，組成三種節(jié)流調(diào)速系統(tǒng)：即進(jìn)油節(jié)流調(diào)速系統(tǒng)、回油節(jié)流調(diào)速系統(tǒng)和旁路節(jié)流調(diào)速系統(tǒng)。對(duì)于執(zhí)行元件要求往返節(jié)流調(diào)速的系統(tǒng)可使用兩個(gè)單向節(jié)流閥。節(jié)流閥也在容積節(jié)流調(diào)速回路中使用。這種閥沒有壓力及溫度補(bǔ)償裝置，不能自動(dòng)補(bǔ)償載荷及油液粘度變化時(shí)造成的速度不穩(wěn)定，但其結(jié)構(gòu)簡(jiǎn)單，制造和維護(hù)方便。所以在載荷變化不大或?qū)λ俣确�(wěn)定性要求不高的一般液壓系統(tǒng)中得到廣泛應(yīng)用。

鍛壓機(jī)床

鍛壓機(jī)床是金屬和機(jī)械冷加工用的設(shè)備，他只改變金屬的外形狀。鍛壓機(jī)床包括卷板機(jī)，剪板機(jī)，沖床，壓力機(jī)，液壓機(jī)，油壓機(jī)，折彎?rùn)C(jī)等。

液壓機(jī)是一種以液體為工作介質(zhì)，根據(jù)帕斯卡原理制成的用于傳遞能量以實(shí)現(xiàn)各種工藝的機(jī)器。液壓機(jī)一般由本機(jī)（主機(jī)）、動(dòng)力系統(tǒng)及液壓控制系統(tǒng)三部分組成。液壓機(jī)分類有閥門液壓機(jī)，液體液壓機(jī)，工程液壓機(jī)。

液壓機(jī)（又名：油壓機(jī)）液壓機(jī)是一種利用液體靜壓力來(lái)加工金屬、塑料、橡膠、木材、粉末等制品的機(jī)械。它常用于壓制工藝和壓制成形工藝，如：鍛壓、沖壓、冷擠、校直、彎曲、翻邊、薄板拉深、粉末冶金、壓裝等等。

它的原理是利用帕斯卡定律制成的利用液體壓強(qiáng)傳動(dòng)的機(jī)械，種類很多。當(dāng)然，用途也根據(jù)需要是多種多樣的。如按傳遞壓強(qiáng)的液體種類來(lái)分，有油壓機(jī)和水壓機(jī)兩大類。

Z2FS...型雙單向節(jié)流閥

1.結(jié)構(gòu)分析

Z2FS16型閥是疊加式設(shè)計(jì)的雙路單向節(jié)流閥。該閥用于限制來(lái)自一個(gè)或兩個(gè)工作油口的主流量或控制流量。

兩個(gè)對(duì)稱設(shè)置的單向節(jié)流閥在一個(gè)方向上限定流量,(通過調(diào)整節(jié)流閥芯),在相反方向上允許自由流通。用于進(jìn)口節(jié)流控制時(shí), 油液從油口A流經(jīng)節(jié)流口( 1 )到達(dá)工作油口。節(jié)流閥芯( 4.1 )可借助于調(diào)節(jié)螺釘( 5 )進(jìn)行軸向調(diào)整,從而可以設(shè)定節(jié)流口(1 )同時(shí),油口A中的油液通經(jīng)道( 2 )到節(jié)流閥芯( 4.1 )的彈簧加載側(cè)(3 )產(chǎn)生的壓力與彈簧

共同作用,使節(jié)流閥芯( 4.1 )保持在節(jié)流位置,

油液從執(zhí)行器回流推動(dòng)節(jié)流閥芯( 4.2 ),允許油液自由流過。此時(shí)閥作為單向閥工作。根據(jù)型號(hào)(S或S2 ),節(jié)流口可以起進(jìn)口或出口節(jié)流的控制作用。限制主流量為了改變執(zhí)行器的速度(主流量限制),雙路單向節(jié)流閥是而安裝于方向控制閥和底板之間。限制控制流量對(duì)液控方向閥,雙路單向節(jié)流閥用作控制阻尼調(diào)節(jié),在此情況下,它被安裝于主閥和控制閥之間。

力士樂REXROTH單向閥供應(yīng)型號(hào)

力士樂REXROTH疊加式液控單向閥Z2S 10

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力士樂REXROTH單向閥，先導(dǎo)式Z2S 32

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R900074608 SV15GB1-4X//12

液壓油箱在液壓系統(tǒng)中的主要作用為儲(chǔ)油、散熱、分離油中所含空氣及泡沫。選用油箱首先要考慮其容

量，一般移動(dòng)式設(shè)備取泵大流量的2～3倍，固定式設(shè)備取3～4倍；其次考慮油箱油位，當(dāng)系統(tǒng)全部液壓油缸伸出后油箱油面不得低于低油位，當(dāng)油缸回縮以后油面不得高于高油位；后考慮油箱結(jié)構(gòu)，傳統(tǒng)油箱內(nèi)的隔板并不能起沉淀臟物的作用，應(yīng)沿油箱縱軸線安裝一個(gè)垂直隔板。此隔板一端和油箱端板之間留有空位使隔板兩邊空間連通，液壓泵的進(jìn)出油口布置在不連通的一端隔板兩側(cè)，使進(jìn)油和回油之間的距離遠(yuǎn)，液壓油箱多起一些散熱作用。