JPS5451006A - Automatic well-pump - Google Patents

Automatic well-pump

Info

Publication number
JPS5451006A
JPS5451006A JP11676077A JP11676077A JPS5451006A JP S5451006 A JPS5451006 A JP S5451006A JP 11676077 A JP11676077 A JP 11676077A JP 11676077 A JP11676077 A JP 11676077A JP S5451006 A JPS5451006 A JP S5451006A
Authority
JP
Japan
Prior art keywords
flow rate
pressure
pump
opened
motor
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
JP11676077A
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 JP11676077A priority Critical patent/JPS5451006A/en
Publication of JPS5451006A publication Critical patent/JPS5451006A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To perform the start and stop of a pump by bringing the pressure in a pressure tank to a high pressure permitting stable water supply, by using a flow switch in a case of the flow rate above a critical flow rate, and by using a pressure switch in a case of the flow rate below a critical flow rate.
CONSTITUTION: When the discharged-water flow rate is above a critical flow rate, a contact a is closed, and a contact b is opened. Thus, a motor-driven pump 2 is operated to feed water. When a hydrant is closed, and the use of water is cut off, a flow switch 10 detects zero in flow rate, and the contact a is opened, and the contact b is closed to stop the motor-driven pump 2. Then, the hydrant is opened to lower the water level, and when the water level reaches a lower limit value, a pressure switch 3 turns-ON, and the motor-driven pump 2 and a timer 7 are excited, and the motor-driven pump 2 is started. When the pressure in a pressure tank 1 increased and the setting time of a timer 7 elaspsed, the electrical circuit of a relay 8 is opened, and the operation of the pump 2 stops
COPYRIGHT: (C)1979,JPO&Japio
JP11676077A 1977-09-30 1977-09-30 Automatic well-pump Pending JPS5451006A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11676077A JPS5451006A (en) 1977-09-30 1977-09-30 Automatic well-pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11676077A JPS5451006A (en) 1977-09-30 1977-09-30 Automatic well-pump

Publications (1)

Publication Number Publication Date
JPS5451006A true JPS5451006A (en) 1979-04-21

Family

ID=14695050

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11676077A Pending JPS5451006A (en) 1977-09-30 1977-09-30 Automatic well-pump

Country Status (1)

Country Link
JP (1) JPS5451006A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60192896A (en) * 1984-03-13 1985-10-01 Shibaura Eng Works Co Ltd Control unit for pump
JPH0263082U (en) * 1988-10-31 1990-05-11

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60192896A (en) * 1984-03-13 1985-10-01 Shibaura Eng Works Co Ltd Control unit for pump
JPH0263082U (en) * 1988-10-31 1990-05-11

Similar Documents

Publication Publication Date Title
JPS54153301A (en) Automatic water supply method
JPS5641478A (en) Controller for pressure tank type water supply equipment
JPS544475A (en) Tabieware washing machine
JPS5781181A (en) Pressure tank type water supply system
JPS56151292A (en) Water-feeding device
JPS5748303A (en) Operation of tubular membrane module
JPS5368457A (en) Automatic ice machine
JPS5656987A (en) Water supplying device
JPS5614317A (en) Douching device
JPS5497801A (en) Hydraulic pump with built-in automatic alternative running device
JPS5251737A (en) Toilet apparatus
JPS5471401A (en) A device to control the number of pumps in operation
JPS54108468A (en) Dish washing machine
JPS5598682A (en) Water-service installation having pressure tank
JPS532711A (en) Oil supply unit
JPS54162201A (en) Automatic pump
JPS53137566A (en) Automatic washing machine
JPS5376565A (en) Device for controllimng dehydrator
JPS53148860A (en) Device for controlling water level in washing machine
JPS53137565A (en) Method and device for cleaning separator
JPS5469263A (en) Fully automatic washer
JPS52113549A (en) Controlling apparatus for apparatus for treating waste water
JPS56106095A (en) Operation controller for water pump
JPS5276705A (en) Water pump
JPS55156283A (en) Operation control circuit of storage pump