JPS56104175A - Automatic water feeder - Google Patents

Automatic water feeder

Info

Publication number
JPS56104175A
JPS56104175A JP678780A JP678780A JPS56104175A JP S56104175 A JPS56104175 A JP S56104175A JP 678780 A JP678780 A JP 678780A JP 678780 A JP678780 A JP 678780A JP S56104175 A JPS56104175 A JP S56104175A
Authority
JP
Japan
Prior art keywords
pressure
tank
valve
water
level
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
JP678780A
Other languages
Japanese (ja)
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 JP678780A priority Critical patent/JPS56104175A/en
Publication of JPS56104175A publication Critical patent/JPS56104175A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

PURPOSE: To make the best of a capacity of pneumatic pressure tank equipped with a pressure valve, through using the maximum effective water feed from an automatic water feeder, by starting the valve to close as soon as the tank pressure drops below the closing level of a pressure switch.
CONSTITUTION: Water in a pressure tank 13 is discharged, by means of pneumatic pressure, through a pressure valve 21. As pressure in the tank 13 drops to the closing level of a pressure switch 15, a pump 1 is put in operation to start pumping up water. As a faucet is closed, water is reversed from the pressure valve 21 into the pressure tank 13, and the pump 1 is interrupted as the pressure in the tank 13 exceeds the opening level of the pressure switch 15. As the pressure in the tank 13 drops, due to discharge of water, below the closing pressure of the pressure switch 15, a valve 27 of the pressure sealing valve 21 gets started to close by means of a counter spring 35 and completes its closing action, just before the tank pressure reaches the air blow-off level or the pressure sealing level, to maintain the pressure in the tank 13.
COPYRIGHT: (C)1981,JPO&Japio
JP678780A 1980-01-25 1980-01-25 Automatic water feeder Pending JPS56104175A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP678780A JPS56104175A (en) 1980-01-25 1980-01-25 Automatic water feeder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP678780A JPS56104175A (en) 1980-01-25 1980-01-25 Automatic water feeder

Publications (1)

Publication Number Publication Date
JPS56104175A true JPS56104175A (en) 1981-08-19

Family

ID=11647879

Family Applications (1)

Application Number Title Priority Date Filing Date
JP678780A Pending JPS56104175A (en) 1980-01-25 1980-01-25 Automatic water feeder

Country Status (1)

Country Link
JP (1) JPS56104175A (en)

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