| 发明名称 |
Improvements in circulating and gasifying apparatus partly or wholly submerged in a fluid |
| 摘要 |
<p>A non-return valve 13A is fitted to an orifice 13 in an apparatus W to prevent blockage of said orifice during installation from a fluid flow in opposition to that experienced in use. The fluid flow is for example a flow of liquid with entrained foreign material as experienced in sludge treatment process. <IMAGE></p> |
| 申请公布号 |
GB2063694(A) |
申请公布日期 |
1981.06.10 |
| 申请号 |
GB19790040767 |
申请日期 |
1979.11.26 |
| 申请人 |
ENGINEERING TECHNICAL SERVICES LTD |
发明人 |
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| 分类号 |
B01F3/04;B01F15/00;B01F15/02;C02F3/20;C02F3/22;(IPC1-7):01F13/02 |
主分类号 |
B01F3/04 |
| 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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