?液壓泵是工程機(jī)械設(shè)備上常用的動(dòng)力設(shè)備之一,它的工作過(guò)程主要是將流體從管道輸送到油缸和活塞的中間通過(guò)改變液體的粘度和壓力來(lái)實(shí)現(xiàn)流體的壓力和流量當(dāng)流體壓力降低到一定程度時(shí),流體在液體中被截留,從而獲得液體的流體。
它的產(chǎn)生方法有很多,例如:泵、壓力泵、油壓泵等為了實(shí)現(xiàn)泵的工作時(shí)流體的壓力能傳遞給壓力容器其壓力必須能通過(guò)傳遞介質(zhì)中壓力的介質(zhì)來(lái)實(shí)現(xiàn)常用的有液體和氣體兩種流體. 一、油泵工作原理 油泵是將流體從油管或軟管中吸入泵內(nèi),通過(guò)傳動(dòng)裝置將流體送到機(jī)械上或者其他設(shè)備上。
油泵的作用是把液態(tài)介質(zhì)從油管輸送到油缸或活塞中進(jìn)行工作如果只有氣體流體時(shí),用氣體泵;如果有液體介質(zhì)時(shí),用液體泵、液體油泵或油液混合泵液壓泵一般采用單級(jí)單渦輪活塞式(DCF)泵、雙級(jí)雙渦輪活塞式(DCF)泵。
二、液壓閥 液壓閥在機(jī)械上應(yīng)用最廣泛,它的種類繁多主要分為液壓?jiǎn)㈤]的氣動(dòng)式液壓閥門(mén)和電動(dòng)式液壓閥兩大類其中液壓?jiǎn)㈤]的氣動(dòng)式液壓閥稱為氣動(dòng)密封閥其主要優(yōu)點(diǎn)在于:結(jié)構(gòu)簡(jiǎn)單、維修方便、維護(hù)費(fèi)用低;通用性強(qiáng)、成本低;壽命長(zhǎng);密封性好;維護(hù)簡(jiǎn)單、價(jià)格便宜;易于安裝維護(hù)及清洗;閥體內(nèi)壓差??;壓力損失??;噪聲低;使用壽命長(zhǎng);制造容易且價(jià)格低廉;對(duì)工作環(huán)境要求不高等。
但是缺點(diǎn)也是非常明顯的:閥芯材料易老化且磨損嚴(yán)重;對(duì)液壓油來(lái)說(shuō)存在兩種情況:一是流動(dòng)介質(zhì)在閥芯內(nèi)被截留;二是在流動(dòng)過(guò)程中被流體截留引起密封失效 三、油缸 油缸主要是用于液壓傳動(dòng)中的機(jī)械設(shè)備中使用它包括活塞桿。
這是最常見(jiàn)的兩種活塞桿主要由兩個(gè)零件組成它是用來(lái)將液壓油或空氣壓力傳遞到活塞上的裝置油缸也可以由三個(gè)零件組成:固定套、密封件 90L100-KA-5-AB-60-S-3-C7-F-03-GBA-42-42-24 90L100KA5AB60S3C7F03GBA424224 90-L-100-KA-5-AB-60-S-3-C7-F-03-GBA-42-42-24 90L100KA5AB60S3C7F03GBA424224 90L100-KA-5-AB-60-S-3-S1-F-00-GBA-42-42-24 90L100KA5AB60S3S1F00GBA424224 90-L-100-KA-5-AB-60-S-3-S1-F-00-GBA-42-42-24 90L100KA5AB60S3S1F00GBA424224 90L100-KA-5-AB-60-S-3-S1-F-04-GBA-35-35-24 90L100KA5AB60S3S1F04GBA353524 90-L-100-KA-5-AB-60-S-3-S1-F-04-GBA-35-35-24 90L100KA5AB60S3S1F04GBA353524 90L100-KA-5-AB-60-S-4-C7-E-03-GBA-30-30-24 90L100KA5AB60S4C7E03GBA303024 90-L-100-KA-5-AB-60-S-4-C7-E-03-GBA-30-30-24 90L100KA5AB60S4C7E03GBA303024 90L100-KA-5-AB-60-S-4-C7-E-03-GBA-35-35-24 90L100KA5AB60S4C7E03GBA353524 90-L-100-KA-5-AB-60-S-4-C7-E-03-GBA-35-35-24 90L100KA5AB60S4C7E03GBA353524 90L100-KA-5-AB-60-S-4-C7-E-03-GBA-42-42-24 90L100KA5AB60S4C7E03GBA424224 90-L-100-KA-5-AB-60-S-4-C7-E-03-GBA-42-42-24 90L100KA5AB60S4C7E03GBA424224 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