JPS62243981A - Vacuum pump device - Google Patents

Vacuum pump device

Info

Publication number
JPS62243981A
JPS62243981A JP8503386A JP8503386A JPS62243981A JP S62243981 A JPS62243981 A JP S62243981A JP 8503386 A JP8503386 A JP 8503386A JP 8503386 A JP8503386 A JP 8503386A JP S62243981 A JPS62243981 A JP S62243981A
Authority
JP
Japan
Prior art keywords
water
water tank
temperature
feed water
feed
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
JP8503386A
Other languages
Japanese (ja)
Inventor
Eiichi Ito
Ryuichi Nakamura
Kinya Morioka
Kazuo Kobayashi
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP8503386A priority Critical patent/JPS62243981A/en
Publication of JPS62243981A publication Critical patent/JPS62243981A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C19/00Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids
    • F04C19/004Details concerning the operating liquid, e.g. nature, separation, cooling, cleaning, control of the supply

Abstract

PURPOSE: To reduce an amount of supply water, by a method wherein, when the temperature of water in a feed water tank exceeds a set value, water in the feed water tank is cooled to keep the temperature of water, fed to a liquid- sealed type vacuum pump, approximately at a specified value.
CONSTITUTION: The suction port of a liquid-sealed type vacuum pump 3 is connected to a feed water tank 1, and its delivery port is connected to the feed water tank 1 through a return water pipe 4. An increase in a water temperature is detected by a temperature detector 8 situated to the feed water tank 1, an automatic valve 5 is opened, and water in the feed water tank 1 is drained to the outside through a bleedoff pipe 6. Lowering of a water level is detected by means of a float 11, and water having a low temperature is supplied to the feed water tank 1. This constitution enables keeping of the temperature of water fed to a pump approximately at a specified value, and permits reduction of an amount of supply water.
COPYRIGHT: (C)1987,JPO&Japio
JP8503386A 1986-04-15 1986-04-15 Vacuum pump device Pending JPS62243981A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8503386A JPS62243981A (en) 1986-04-15 1986-04-15 Vacuum pump device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8503386A JPS62243981A (en) 1986-04-15 1986-04-15 Vacuum pump device

Publications (1)

Publication Number Publication Date
JPS62243981A true JPS62243981A (en) 1987-10-24

Family

ID=13847386

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8503386A Pending JPS62243981A (en) 1986-04-15 1986-04-15 Vacuum pump device

Country Status (1)

Country Link
JP (1) JPS62243981A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0437637A1 (en) * 1989-11-20 1991-07-24 KKW Kulmbacher Klimageräte-Werk GmbH Liquid ring pump
EP0486726A1 (en) * 1990-11-23 1992-05-27 Siemens Aktiengesellschaft Liquid ring pump
GB2405906A (en) * 2003-09-12 2005-03-16 Aesseal Plc Liquid ring vacuum pump with automatically maintained level of barrier fluid
JP2011047335A (en) * 2009-08-27 2011-03-10 Nittan Co Ltd Liquid ring vacuum pump device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0437637A1 (en) * 1989-11-20 1991-07-24 KKW Kulmbacher Klimageräte-Werk GmbH Liquid ring pump
EP0486726A1 (en) * 1990-11-23 1992-05-27 Siemens Aktiengesellschaft Liquid ring pump
GB2405906A (en) * 2003-09-12 2005-03-16 Aesseal Plc Liquid ring vacuum pump with automatically maintained level of barrier fluid
GB2405906B (en) * 2003-09-12 2006-08-30 Aesseal Plc A system and method for regulating the volume of barrier fluid in a liquid ring vacuum pump
US7258143B2 (en) 2003-09-12 2007-08-21 Aes Engineering Ltd. System and method for regulating the volume of barrier fluid in a liquid ring vacuum pump
JP2011047335A (en) * 2009-08-27 2011-03-10 Nittan Co Ltd Liquid ring vacuum pump device

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