JPS5788290A - Submergible pump - Google Patents

Submergible pump

Info

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
Application number
JP16428680A
Other languages
Japanese (ja)
Inventor
Haruo Tsujimoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TSURUMI SEISAKUSHO KK
Tsurumi Manufacturing Co Ltd
Original Assignee
TSURUMI SEISAKUSHO KK
Tsurumi Manufacturing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by TSURUMI SEISAKUSHO KK, Tsurumi Manufacturing Co Ltd filed Critical TSURUMI SEISAKUSHO KK
Priority to JP16428680A priority Critical patent/JPS5788290A/en
Publication of JPS5788290A publication Critical patent/JPS5788290A/en
Pending legal-status Critical Current

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
JP16428680A 1980-11-20 1980-11-20 Submergible pump Pending JPS5788290A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5315102B1 (en) * 1971-06-21 1978-05-22

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5315102B1 (en) * 1971-06-21 1978-05-22

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