| 摘要 |
<p>The pressure aeration system, for water pipes with air feed valves (1), has valves with infinitely variable adjustment, connected to a programmable memory control (2) and a measured value converter (3) for an oxygen measurement probe (7) in a bypass (4) to the water pipe or at the water pipe (5) after a mixer in a measurement probe pot (6). A pump (8) and change-over valve (10) are in the bypass (4) in front of the measurement probe pot (6), and a closing valve (11) in the bypass (4) is after the measurement probe pot (6). The change-over valve (10) gives an alternating connecting between a feed channel (12) for a cleaning agent or in the bypass (4). The measurement probe pot (6) has a further and lower outflow (13) with a closing valve (9). The closing valves (9, 11) and the change-over valve (10) are operated by the control (2) with a programmable memory.Only one air feed valve (1) is fitted. A pump (14) in the feed channel (12) is operated by the control (2). The change-over valve (10) has two closing valves acting together, where one is at the bypass (4) and the other is at the feed channel (12) directly linked to the measurement probe pot (6). The pump has a switched connection to the control (2). The measurement value converter (3) has a display to indicate the measured values.</p> |
