JPS575575A - Automatic pump apparatus - Google Patents

Automatic pump apparatus

Info

Publication number
JPS575575A
JPS575575A JP7782180A JP7782180A JPS575575A JP S575575 A JPS575575 A JP S575575A JP 7782180 A JP7782180 A JP 7782180A JP 7782180 A JP7782180 A JP 7782180A JP S575575 A JPS575575 A JP S575575A
Authority
JP
Japan
Prior art keywords
air
projection
top end
case
nozzle
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
JP7782180A
Other languages
Japanese (ja)
Inventor
Shigetomo Yoshihara
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 JP7782180A priority Critical patent/JPS575575A/en
Publication of JPS575575A publication Critical patent/JPS575575A/en
Pending legal-status Critical Current

Links

Landscapes

  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PURPOSE: To obtain certain opening and closing of a spherical valve and obtain an automatic air feeding apparatus having high performance by forming the projection part on the lower surface of a nozzle case and increasing the distance from the top end of the projection part to the top end of the nozzle case larger than the diameter of the spherical valve.
CONSTITUTION: A projection 28b is formed between the notched part 28a on the lower part of a nozzle case 28 and a nozzle 27, and the distance from the top end of the projection to the top end of the nozzle case 28 is formed larger than the diameter of a spherical body 29, and the height of the projection 28b is formed larger than the radius of the spherical body 29. As a discharge inner pipe 4 is filled with water in case where air is short in a pressure tank (not shown in the figure), a valve seat 27b is certainly closed by the spherical body 29 in the flow of the water. In case of excessive air, as the discharge inner pipe 4 is filled with air, the spherical body 29 is set on the lower part of the notched part 28a, and the valve constituted of a shpherical body 31 is opened, and the air is supplied. Thus, air can be supplied certainly, and the pump having high performance can be obtained.
COPYRIGHT: (C)1982,JPO&Japio
JP7782180A 1980-06-11 1980-06-11 Automatic pump apparatus Pending JPS575575A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7782180A JPS575575A (en) 1980-06-11 1980-06-11 Automatic pump apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7782180A JPS575575A (en) 1980-06-11 1980-06-11 Automatic pump apparatus

Publications (1)

Publication Number Publication Date
JPS575575A true JPS575575A (en) 1982-01-12

Family

ID=13644694

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7782180A Pending JPS575575A (en) 1980-06-11 1980-06-11 Automatic pump apparatus

Country Status (1)

Country Link
JP (1) JPS575575A (en)

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