发明名称 Filter och förfarande för filtrering av hydraulolja i en returledning till en hydraultank, samt en borrigg innefattande filtret
摘要 The present invention concerns a filter (5) for a return line (L1, L2) for hydraulic oil to a hydraulic tank (2), which filter (5) comprises a filter element (11). According to the invention, the filter (5) is arranged to filter the hydraulic oil through the filter element (11) when the hydraulic oil lies below a first oil level (H1) in the filter (5), and the filter (5) comprises an arrangement (15) to lead the hydraulic oil past the filter element (11) when the oil level (H) in the filter (5) exceeds the first oil level (H1).
申请公布号 SE534326(C2) 申请公布日期 2011.07.12
申请号 SE20090050893 申请日期 2009.11.24
申请人 ATLAS COPCO ROCK DRILLS AB 发明人 ANDERS NYDAHL
分类号 B01D35/147;B01D35/02;E21B4/02;F15B21/04 主分类号 B01D35/147
代理机构 代理人
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