发明名称 |
FILTER AND METHOD FOR FILTRATION OF HYDRAULIC OIL IN A RETURN LINE TO A HYDRAULIC TANK, AND A DRILLING RIG COMPRISING THE FILTER |
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).
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申请公布号 |
EP2504076(A4) |
申请公布日期 |
2013.07.03 |
申请号 |
EP20100833657 |
申请日期 |
2010.11.03 |
申请人 |
ATLAS COPCO ROCK DRILLS AB |
发明人 |
NYDAHL, ANDERS |
分类号 |
B01D35/147;B01D29/11;B01D29/60;B01D35/02;B01D35/143;E21B4/02;F15B21/04 |
主分类号 |
B01D35/147 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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