JPS555427A - Water ring pump of internal-air-port type - Google Patents

Water ring pump of internal-air-port type

Info

Publication number
JPS555427A
JPS555427A JP7625378A JP7625378A JPS555427A JP S555427 A JPS555427 A JP S555427A JP 7625378 A JP7625378 A JP 7625378A JP 7625378 A JP7625378 A JP 7625378A JP S555427 A JPS555427 A JP S555427A
Authority
JP
Japan
Prior art keywords
pump
air
delivery
delivery ports
valve unit
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
JP7625378A
Other languages
Japanese (ja)
Inventor
Akio Nakamura
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.)
NAKAMURA SUIKAN KK
Original Assignee
NAKAMURA SUIKAN KK
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 NAKAMURA SUIKAN KK filed Critical NAKAMURA SUIKAN KK
Priority to JP7625378A priority Critical patent/JPS555427A/en
Publication of JPS555427A publication Critical patent/JPS555427A/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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
    • F04C29/126—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type
    • F04C29/128—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type of the elastic type, e.g. reed valves

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

PURPOSE:To make a good efficiency obtainable, with a state of overcompression and reverse flow compression prevented at the full operation vacuum, by means of installing an elastically flexible plate-shape valve unit, big enough for fully enclosing delivery ports, to the air in-out cylinder of the pump. CONSTITUTION:As a degree of vacuum increases after operating the pump, an elastically flexible plate-shape valve unit 10, installed to an air in-out cylinder 6 and big enough for fully enclosing delivery ports 5...., is going to close the delivery ports 5 from the lower stage, that is, successively in the order of 5a, 5b, 5c..., and, when reaching the prescribed degree of high vacuum, closes all delivery ports 5 except the delivery port 5e at the topmost stage, or closes, with a delivery port 5 at the top stage near the topmost delivery port 5e only excepted, the lower stage delivery ports 5 than said port. In this way, the plate-shape valve unit 10, functioning to open the delivery port 5 only required and to close the rest, can prevent the pump from overcompression and reverse flow compression, thus capable of obtaining a good pump efficiency.
JP7625378A 1978-06-22 1978-06-22 Water ring pump of internal-air-port type Pending JPS555427A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7625378A JPS555427A (en) 1978-06-22 1978-06-22 Water ring pump of internal-air-port type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7625378A JPS555427A (en) 1978-06-22 1978-06-22 Water ring pump of internal-air-port type

Publications (1)

Publication Number Publication Date
JPS555427A true JPS555427A (en) 1980-01-16

Family

ID=13600023

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7625378A Pending JPS555427A (en) 1978-06-22 1978-06-22 Water ring pump of internal-air-port type

Country Status (1)

Country Link
JP (1) JPS555427A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4498844A (en) * 1983-08-08 1985-02-12 The Nash Engineering Company Liquid ring pump with conical or cylindrical port member
US4521161A (en) * 1983-12-23 1985-06-04 The Nash Engineering Company Noise control for conically ported liquid ring pumps
US4551070A (en) * 1983-12-23 1985-11-05 The Nash Engineering Company Noise control for conically ported liquid ring pumps

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4498844A (en) * 1983-08-08 1985-02-12 The Nash Engineering Company Liquid ring pump with conical or cylindrical port member
US4521161A (en) * 1983-12-23 1985-06-04 The Nash Engineering Company Noise control for conically ported liquid ring pumps
JPS60135686A (en) * 1983-12-23 1985-07-19 ザ　ナツシユ　エンジニアリング　コンパニ− Control of noise for conical opening section liquid ring pump
US4551070A (en) * 1983-12-23 1985-11-05 The Nash Engineering Company Noise control for conically ported liquid ring pumps

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