JPS5788290A - Submergible pump - Google Patents
Submergible pumpInfo
- Publication number
- JPS5788290A JPS5788290A JP16428680A JP16428680A JPS5788290A JP S5788290 A JPS5788290 A JP S5788290A JP 16428680 A JP16428680 A JP 16428680A JP 16428680 A JP16428680 A JP 16428680A JP S5788290 A JPS5788290 A JP S5788290A
- Authority
- JP
- Japan
- Prior art keywords
- pump
- water
- lacked
- drawn
- suction port
- 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
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
PURPOSE: To protect the interior of a main pump against wear at the time of water-lacked or waterless operation of a submergible pump, by operating a lower impeller alone as a pump at the time of water-lacked or waterless operation of the pump, so that sand or the like is not drawn into the pump from a suction port of an upper swirl chamber.
CONSTITUTION: When water-lacked or waterless operation of a submergible pump take place along with lowering of the level of water in a tank, a main impeller 3a stops to function as a pump, and water drawn from a suction port 5b of a lower swirl chamber 4b together with air is discharged to the outside of the tank via a subsidiary discharge passage 7b only by the function of a lower impeller 3b. Therefore, only air is drawn from a suction port 5a of an upper swirl chamber 4a and sand or the like is not drawn from the port 5a, so that the interior of the pump is protected against wear at the time of water-lacked or waterless operation of the pump.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16428680A JPS5788290A (en) | 1980-11-20 | 1980-11-20 | Submergible pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16428680A JPS5788290A (en) | 1980-11-20 | 1980-11-20 | Submergible pump |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5788290A true JPS5788290A (en) | 1982-06-02 |
Family
ID=15790211
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16428680A Pending JPS5788290A (en) | 1980-11-20 | 1980-11-20 | Submergible pump |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5788290A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5315102B1 (en) * | 1971-06-21 | 1978-05-22 |
-
1980
- 1980-11-20 JP JP16428680A patent/JPS5788290A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5315102B1 (en) * | 1971-06-21 | 1978-05-22 |
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