JPS57129289A - Drawing pump for floating substance - Google Patents

Drawing pump for floating substance

Info

Publication number
JPS57129289A
JPS57129289A JP1483981A JP1483981A JPS57129289A JP S57129289 A JPS57129289 A JP S57129289A JP 1483981 A JP1483981 A JP 1483981A JP 1483981 A JP1483981 A JP 1483981A JP S57129289 A JPS57129289 A JP S57129289A
Authority
JP
Japan
Prior art keywords
pump
water
drawn
air
inlet
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
JP1483981A
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 JP1483981A priority Critical patent/JPS57129289A/en
Publication of JPS57129289A publication Critical patent/JPS57129289A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D9/00—Priming; Preventing vapour lock
    • F04D9/001—Preventing vapour lock

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PURPOSE:To prevent occurrence of air lock in a pump used in a waste water purifying plant or the like even if air is drawn into the pump from its water inlet port and to enable to obtain strong and stable suction force, by connecting an inlet and an outlet of the pump via a pipe for recirculating a portion of water drawn by the pump. CONSTITUTION:Since, according to the present invention, a pump outlet 6 and a pump inlet 3 are connected via a pipe 5, a portion of water drawn by the pump is recirculated through a circulating passage of the pipe 5. Therefore, if air is drawn into the pump casing, occurrence of air lock is prevented and water drawn from a water inlet port 4 is discharged from the pump outlet 6 to the outside via a discharge hose 7. At the same time, air drawn into the pump is also discharged to the outside together with water and floatage drawn into the pump. By thus forming a water recirculating passage, suction force of the pump can be rendered stable. Further, since a section 8 where the pump inlet 3 joins a water drawing passage 1 functions like a jet pump, water drawn from the inlet port 4 can be sent into the pump casing continuously and positively.
JP1483981A 1981-02-02 1981-02-02 Drawing pump for floating substance Pending JPS57129289A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1483981A JPS57129289A (en) 1981-02-02 1981-02-02 Drawing pump for floating substance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1483981A JPS57129289A (en) 1981-02-02 1981-02-02 Drawing pump for floating substance

Publications (1)

Publication Number Publication Date
JPS57129289A true JPS57129289A (en) 1982-08-11

Family

ID=11872197

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1483981A Pending JPS57129289A (en) 1981-02-02 1981-02-02 Drawing pump for floating substance

Country Status (1)

Country Link
JP (1) JPS57129289A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62162390U (en) * 1986-04-04 1987-10-15
JPS6413292U (en) * 1987-07-14 1989-01-24
JPS6413293U (en) * 1987-07-14 1989-01-24
JP2010106721A (en) * 2008-10-29 2010-05-13 Kawamoto Pump Mfg Co Ltd Jet pump device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62162390U (en) * 1986-04-04 1987-10-15
JPS6413292U (en) * 1987-07-14 1989-01-24
JPS6413293U (en) * 1987-07-14 1989-01-24
JP2010106721A (en) * 2008-10-29 2010-05-13 Kawamoto Pump Mfg Co Ltd Jet pump device

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