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進(jìn)口泄壓閥R900746472
上海韋米機(jī)電設(shè)備有限公司經(jīng)營(yíng)涵蓋產(chǎn)品有:

1、氣動(dòng)元件： 氣缸和驅(qū)動(dòng)裝置、氣缸（微型、短行程、型材、鎖緊、無(wú)桿、標(biāo)準(zhǔn)、波紋管、 導(dǎo)向、旋轉(zhuǎn)型），閥門(mén)系統(tǒng)（閥島、現(xiàn)場(chǎng)總線連接、電磁閥、換向閥、氣動(dòng)閥、 機(jī)械閥、電磁閥組、壓力調(diào)節(jié)閥、氣動(dòng)比例閥、止回閥、節(jié)流閥、單向閥、安全 閥、溢流閥），氣源處理單元（噴霧潤(rùn)滑器（油霧器）、過(guò)濾器、調(diào)壓閥、過(guò)濾器 調(diào)壓閥、分氣塊、換向閥、壓力表）、傳感器（接近傳感器、磁接近開(kāi)關(guān)、位移 傳感器、壓力傳感器、壓力開(kāi)關(guān)）；氣動(dòng)連接件（快接插頭、空氣軟管、氣動(dòng)接 頭、電磁閥插頭）；

2、工業(yè)液壓元件： 液壓泵（軸向柱塞泵、徑向柱塞泵、外嚙合齒輪泵、內(nèi)嚙合齒輪泵、葉 片泵），馬達(dá)（軸向柱塞馬達(dá)、外嚙合齒輪馬達(dá)），開(kāi)/關(guān)閥（單向閥、電磁閥、 換向閥、溢流閥、減壓閥、流量控制閥、二通插裝閥），高頻響比例伺服閥 （比 例方向閥、比例溢流閥、比例流量閥、高頻響應(yīng)閥、方向伺服閥、比例插裝閥、 壓力補(bǔ)償器），電子元件（比例閥放大器、液壓泵放大器、控制軸放大器、比例 閥七芯插頭、傳感器插頭、電磁閥插頭），傳感器和信號(hào)發(fā)生器（壓力傳感器、 電子壓力開(kāi)關(guān)、壓力繼電器、擺角傳感器、壓力表）；蓄能器（液壓蓄能器、隔 膜式蓄能器、皮囊式蓄能器），過(guò)濾器（油路過(guò)濾器、過(guò)濾器濾芯）；

3、工控自動(dòng)化： 自動(dòng)化控制：觸摸屏、CPU 模塊、I/O 模塊、接口模塊、電源模塊、溫度測(cè) 量模塊、計(jì)數(shù)功能模塊、端子排、伺服驅(qū)動(dòng)器、插入式模塊、逆變模塊、伺服電 機(jī)等；監(jiān)測(cè)保護(hù)系統(tǒng)：探頭、前置器、變送器、延伸電纜、速度傳感器、殼體膨

脹傳感器、趨近式探頭外殼組件、校驗(yàn)儀、框架模塊、電源模塊、接口模塊、 鍵相位模塊、繼電器模塊、速度監(jiān)測(cè)模塊、溫度監(jiān)測(cè)模塊等；

4、組裝技術(shù)： 滾珠導(dǎo)軌導(dǎo)向系統(tǒng)（滑塊、導(dǎo)軌、滾珠、絲杠），輸送系統(tǒng)（輸送機(jī)、擋停 器、分離器、阻尼器、搖桿），手工生產(chǎn)系統(tǒng)（卡裝式容器、旋轉(zhuǎn)升降裝置），識(shí) 別系統(tǒng)（通信模塊、天線、傳感器、移動(dòng)數(shù)據(jù)載體）

電磁閥（Electromagnetic valve）是用電磁控制的工業(yè)設(shè)備，是用來(lái)控制流體的自動(dòng)化基礎(chǔ)元件，屬于執(zhí)行器，并不限于液壓、氣動(dòng)。用在工業(yè)控制系統(tǒng)中調(diào)整介質(zhì)的方向、流量、速度和其他的參數(shù)。電磁閥可以配合不同的電路來(lái)實(shí)現(xiàn)預(yù)期的控制，而控制的精度和靈活性都能夠保證。電磁閥有很多種，不同的電磁閥在控制系統(tǒng)的不同位置發(fā)揮作用，最常用的是單向閥、安全閥、方向控制閥、速度調(diào)節(jié)閥等。
電磁閥里有密閉的腔，在不同位置開(kāi)有通孔，每個(gè)孔連接不同的油管，腔中間是活塞，兩面是兩塊電磁鐵，哪面的磁鐵線圈通電閥體就會(huì)被吸引到哪邊，通過(guò)控制閥體的移動(dòng)來(lái)開(kāi)啟或關(guān)閉不同的排油孔，而進(jìn)油孔是常開(kāi)的，液壓油就會(huì)進(jìn)入不同的排油管，然后通過(guò)油的壓力來(lái)推動(dòng)油缸的活塞，活塞又帶動(dòng)活塞桿，活塞桿帶動(dòng)機(jī)械裝置。這樣通過(guò)控制電磁鐵的電流通斷就控制了機(jī)械運(yùn)動(dòng)。

換向閥是具有兩種以上流動(dòng)形式和兩個(gè)以上油口的方向控制閥。是實(shí)現(xiàn)液壓油流的溝通、切斷和換向，以及壓力卸載和順序動(dòng)作控制的閥門(mén)。
可分為手動(dòng)換向閥、電磁換向閥、電液換向閥等。
又稱(chēng)克里斯閥，閥門(mén)的一種，具有多向可調(diào)的通道，可適時(shí)改變流體流向。
工作時(shí)借著閥外的驅(qū)動(dòng)傳動(dòng)機(jī)構(gòu)轉(zhuǎn)動(dòng)驅(qū)動(dòng)軸，帶動(dòng)搖拐臂，啟動(dòng)閥板，使工作流體時(shí)而從左入口通向閥的下部出口，時(shí)而從右入口變換通向下部出口，實(shí)現(xiàn)了周期變換流向的目的。
這種變換閥在石油、化工生產(chǎn)中有著廣泛的應(yīng)用，在合成氨造氣系統(tǒng)中最為常用。此外，換向閥還可作成閥瓣式的結(jié)構(gòu)，多用于較小流量的場(chǎng)合。工作時(shí)只需轉(zhuǎn)動(dòng)手輪通過(guò)閥瓣來(lái)變換工作流體的流向。
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