JPS5647689A - Automatic water supply device - Google Patents

Automatic water supply device

Info

Publication number
JPS5647689A
JPS5647689A JP12382279A JP12382279A JPS5647689A JP S5647689 A JPS5647689 A JP S5647689A JP 12382279 A JP12382279 A JP 12382279A JP 12382279 A JP12382279 A JP 12382279A JP S5647689 A JPS5647689 A JP S5647689A
Authority
JP
Japan
Prior art keywords
pressure
tank
valve
water
pressure tank
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
JP12382279A
Other languages
Japanese (ja)
Inventor
Tomohiko Taki
Yoshikazu Yashiro
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 JP12382279A priority Critical patent/JPS5647689A/en
Publication of JPS5647689A publication Critical patent/JPS5647689A/en
Pending legal-status Critical Current

Links

Landscapes

  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PURPOSE: To prevent air from flowing out of a tank even if the pressure in the pressure tank falls, by providing a pressure shut-off valve in a water flow pipe and connecting the pressure shut-off valve to the lower section of the tank and making the valve operate opening and closing movements according to pressure in the pressure tank.
CONSTITUTION: In an intermediate position of a water flow pipe 5 a pressure shut- off valve 9 connected to the lower section of a pressure tank 6 is installed. When the water level of the pressure tank 6 falls below a lower limit level L1 and its inner pressure drops lower than P1 which is the pump starting pressure, a diaphragm 13 comes in touch with a valve seat 17 and closes a point between flow routes 18 and 19. By this arrangement, the water 21 in the pressure tank 6 stops to be supplied from an outlet 4 to the water supply side, and flow out of the air 20 in the pressure tank 6 can be prevented.
COPYRIGHT: (C)1981,JPO&Japio
JP12382279A 1979-09-28 1979-09-28 Automatic water supply device Pending JPS5647689A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12382279A JPS5647689A (en) 1979-09-28 1979-09-28 Automatic water supply device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12382279A JPS5647689A (en) 1979-09-28 1979-09-28 Automatic water supply device

Publications (1)

Publication Number Publication Date
JPS5647689A true JPS5647689A (en) 1981-04-30

Family

ID=14870208

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12382279A Pending JPS5647689A (en) 1979-09-28 1979-09-28 Automatic water supply device

Country Status (1)

Country Link
JP (1) JPS5647689A (en)

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