| 发明名称 |
METHOD AND DEVICE FOR AUTOMATIC CIRCULATION IN WASTE WATER PUMP STATIONS |
| 摘要 |
<p>The pressure side of the pump unit is provided with a valve (6) which during certain periods opens a connection between the pump and the pump station to obtain circulation in the station. The valve (6) is opened and closed by a valve ball (9) which is controlled by the pump pressure.</p> |
| 申请公布号 |
CA2009906(C) |
申请公布日期 |
1999.12.28 |
| 申请号 |
CA19902009906 |
申请日期 |
1990.02.13 |
| 申请人 |
|
发明人 |
LANDQUIST, FOLKE |
| 分类号 |
B01F5/02;B01F7/00;B01F15/02;E03F5/22;F04D13/16;F16K17/34;(IPC1-7):F04D29/00;F04D29/70;F04B53/10 |
主分类号 |
B01F5/02 |
| 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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