JPS5725578A - Pump valve with constant resistance - Google Patents

Pump valve with constant resistance

Info

Publication number
JPS5725578A
JPS5725578A JP9753280A JP9753280A JPS5725578A JP S5725578 A JPS5725578 A JP S5725578A JP 9753280 A JP9753280 A JP 9753280A JP 9753280 A JP9753280 A JP 9753280A JP S5725578 A JPS5725578 A JP S5725578A
Authority
JP
Japan
Prior art keywords
pressure
pump
water
resistance
height
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.)
Granted
Application number
JP9753280A
Other languages
Japanese (ja)
Other versions
JPS6213557B2 (en
Inventor
Tomohiko Taki
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.)
Hitachi Ltd
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 JP9753280A priority Critical patent/JPS5725578A/en
Publication of JPS5725578A publication Critical patent/JPS5725578A/en
Publication of JPS6213557B2 publication Critical patent/JPS6213557B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Fluid-Driven Valves (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

PURPOSE: To protect pump from overcharge by automatically generating a water flow resistance to conform with the height of pressure of the pressure giving water supply pool by a method to detect such pressure with a diaphragm thus to control the water flow area with a vertical movement of the resisting element to meet the detected pressure value.
CONSTITUTION: Pressure giving water in the water pool 3 is pumped up by the pump 1 through constant resistance valve 2. At this time, the water pipe 4 has a positive pressure inside because the input side of pump 1 is under pressure. This positive pressure is given to the diaphragm 16 of the constant resistance valve 2 and is changed to a force by the retainer 19 and brings the resistance element 14 upward by the rod 20. Wtih this up-lifting action, the resistance element 14 moves to the direction to close the valve seat 12, reduce the area of the flow passage, and to generate a water flow resistance to conform with the pressure height. In this way, the overcharge of the pump is always prevented irrespective of any change of the pressure height.
COPYRIGHT: (C)1982,JPO&Japio
JP9753280A 1980-07-18 1980-07-18 Pump valve with constant resistance Granted JPS5725578A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9753280A JPS5725578A (en) 1980-07-18 1980-07-18 Pump valve with constant resistance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9753280A JPS5725578A (en) 1980-07-18 1980-07-18 Pump valve with constant resistance

Publications (2)

Publication Number Publication Date
JPS5725578A true JPS5725578A (en) 1982-02-10
JPS6213557B2 JPS6213557B2 (en) 1987-03-27

Family

ID=14194858

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9753280A Granted JPS5725578A (en) 1980-07-18 1980-07-18 Pump valve with constant resistance

Country Status (1)

Country Link
JP (1) JPS5725578A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63200863A (en) * 1987-02-18 1988-08-19 Asahi Okuma Ind Co Ltd Method for adjusting discharge angle of paint flow atomized from rotary electrode-type electrostatic coating gun

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51137715U (en) * 1975-04-28 1976-11-06

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51137715U (en) * 1975-04-28 1976-11-06

Also Published As

Publication number Publication date
JPS6213557B2 (en) 1987-03-27

Similar Documents

Publication Publication Date Title
JPS5725578A (en) Pump valve with constant resistance
JPS5612410A (en) Control method for water level at upstream side of weir made of flexible film
ES8507284A1 (en) Primary circuit pressure-control method during the shut-down period of a pressurised water nuclear reactor.
JPS5664109A (en) Accumulator for steam line
JPS578363A (en) Energy storage generator using submarine compressed air tank
JPS5797968A (en) Flow velocity control valve
JPS56146004A (en) Steam boiler device
JPS56153009A (en) Sink/float construction
JPS5547069A (en) Valve
JPS5779289A (en) Negative suction pressure control device of dredge pump
JPS57146131A (en) Sampling device
JPS57180709A (en) Sluice gate incorporating float type non-return valve
JPS5469804A (en) Pump system with automatic flow control valve
JPS5372201A (en) Automatic water supply system
JPS53129788A (en) Control method for controlling flow rate or pressure by operating two or more valves
JPS5648438A (en) Structure
JPS52109601A (en) Pump lift control equipment
JPS5325790A (en) Reactor exhaust pipe device with relief valve
JPS5591779A (en) Method of controlling water level in surge vessel coping with water hammer
JPS5557675A (en) Rectifier for pumped-in water vessel
JPS5451007A (en) Method of feeding air into pressure tank
JPS53122114A (en) Water absorbing jet pump
JPS549371A (en) Directional and flow control valve with pressure compensation
JPS5348236A (en) Oil controller
JPS5743075A (en) Two-position liquid level control valve