JPS56106095A - Operation controller for water pump - Google Patents
Operation controller for water pumpInfo
- Publication number
- JPS56106095A JPS56106095A JP810580A JP810580A JPS56106095A JP S56106095 A JPS56106095 A JP S56106095A JP 810580 A JP810580 A JP 810580A JP 810580 A JP810580 A JP 810580A JP S56106095 A JPS56106095 A JP S56106095A
- Authority
- JP
- Japan
- Prior art keywords
- water
- water pump
- pump
- seal
- level
- 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
Landscapes
- Control Of Non-Positive-Displacement Pumps (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
PURPOSE: To make a reliable operation of a water pump by a method wherein before the pump is started, seal water is supplied to the shaft seal part of the water pump that discharges water from a vacuum water tank and after the water pump stops, the seal water is cut.
CONSTITUTION: When a water level in a water tank 2 rises and a high-level switch 8 operates, an electromagnetic valve 22 is excited through a control circuit 13 and seal water 23 can be supplied to the shaft seal part before the water pump 3 is started. After an intended time of a period an inlet valve 9 is opened by a timer 24 and simultaneously the water pump 3 is started. If the water level in the water tank 2 falls down to an intended level, a low-level switch 10 operates, the water pump 3 stops simultaneously, after an intended time of period the inlet port 9 is shut and moreover the electromagnetic valve 22 is deenergized and seal water 23 is stopped from being supplied. Thus, extreme vacuum in the inlet of the pump at the starting time can be prevented and the water pump 3 can be operated reliably.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP810580A JPS56106095A (en) | 1980-01-26 | 1980-01-26 | Operation controller for water pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP810580A JPS56106095A (en) | 1980-01-26 | 1980-01-26 | Operation controller for water pump |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56106095A true JPS56106095A (en) | 1981-08-24 |
Family
ID=11684014
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP810580A Pending JPS56106095A (en) | 1980-01-26 | 1980-01-26 | Operation controller for water pump |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56106095A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104595199A (en) * | 2014-12-03 | 2015-05-06 | 广州市昌宁机电设备有限公司 | Vacuum water diversion device capable of automatically supplementing water |
-
1980
- 1980-01-26 JP JP810580A patent/JPS56106095A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104595199A (en) * | 2014-12-03 | 2015-05-06 | 广州市昌宁机电设备有限公司 | Vacuum water diversion device capable of automatically supplementing water |
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