JPS5759084A - Controller for flow rate of pump - Google Patents
Controller for flow rate of pumpInfo
- Publication number
- JPS5759084A JPS5759084A JP13285280A JP13285280A JPS5759084A JP S5759084 A JPS5759084 A JP S5759084A JP 13285280 A JP13285280 A JP 13285280A JP 13285280 A JP13285280 A JP 13285280A JP S5759084 A JPS5759084 A JP S5759084A
- Authority
- JP
- Japan
- Prior art keywords
- pump
- water level
- sewage
- discharge valve
- secondary resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE: To enable the stable operation of a sewage pump, by connecting a water level detector to an electric motor for the discharge valve of the pump through a secondary resistance lowest notch, a water level limiter and an opening degree controller.
CONSTITUTION: A water level detector 9 is connected to an electric motor 2 for the discharge valve 3 of a sewage pump through a secondary resistance lowest notch 11, a water level limiter 7 which receives a pump well water level signal under the working of the secondary resistance lowest notch 11 when the rotational frequency of the pump is minimum with a low pump well water level, and an opening degree controller 8 which receives the output of the water level limiter 7 to control the opening and closing of the discharge valve 3. According to this constitution, the sewage pump 1 can be continuously operated for a minute inflow rate of sewage as well. As a result, the sewage pump 1 can be stably operated.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13285280A JPS5759084A (en) | 1980-09-26 | 1980-09-26 | Controller for flow rate of pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13285280A JPS5759084A (en) | 1980-09-26 | 1980-09-26 | Controller for flow rate of pump |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5759084A true JPS5759084A (en) | 1982-04-09 |
Family
ID=15091021
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13285280A Pending JPS5759084A (en) | 1980-09-26 | 1980-09-26 | Controller for flow rate of pump |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5759084A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4708594A (en) * | 1984-12-21 | 1987-11-24 | Hitachi, Ltd. | Method of starting a variable-speed pump turbine or a variable speed pump |
-
1980
- 1980-09-26 JP JP13285280A patent/JPS5759084A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4708594A (en) * | 1984-12-21 | 1987-11-24 | Hitachi, Ltd. | Method of starting a variable-speed pump turbine or a variable speed pump |
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