JPS6458710A - Automatic backward flow preventor for waterway - Google Patents

Automatic backward flow preventor for waterway

Info

Publication number
JPS6458710A
JPS6458710A JP21583387A JP21583387A JPS6458710A JP S6458710 A JPS6458710 A JP S6458710A JP 21583387 A JP21583387 A JP 21583387A JP 21583387 A JP21583387 A JP 21583387A JP S6458710 A JPS6458710 A JP S6458710A
Authority
JP
Japan
Prior art keywords
gate
waterway
backward flow
balance weight
arm
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
JP21583387A
Other languages
Japanese (ja)
Other versions
JPH0439530B2 (en
Inventor
Shiyoushichirou Sugiura
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.)
Maeda Manufacturing Co Ltd
Original Assignee
Maeda Manufacturing Co 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 Maeda Manufacturing Co Ltd filed Critical Maeda Manufacturing Co Ltd
Priority to JP21583387A priority Critical patent/JPS6458710A/en
Publication of JPS6458710A publication Critical patent/JPS6458710A/en
Publication of JPH0439530B2 publication Critical patent/JPH0439530B2/ja
Granted legal-status Critical Current

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Abstract

PURPOSE:To control the opening or closing of gate without power by a method in which a gate is provided on one of support arms and a balance weight and a float are provided on the other. CONSTITUTION:An automatic backward flow preventor for waterway is provided with a powerless, balance weight-type gate 1 having a pit leading to waterway, having a support arm 6 with supporting point, a gate 1 vertically movable through one connecting lever 4 of the arm 6, the other slidable balance weight 14 of the arm 6, and a float 17. The opening or closing of the gate 1 can thus be controlled without man and power, reducing the equipment cost.
JP21583387A 1987-08-29 1987-08-29 Automatic backward flow preventor for waterway Granted JPS6458710A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21583387A JPS6458710A (en) 1987-08-29 1987-08-29 Automatic backward flow preventor for waterway

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21583387A JPS6458710A (en) 1987-08-29 1987-08-29 Automatic backward flow preventor for waterway

Publications (2)

Publication Number Publication Date
JPS6458710A true JPS6458710A (en) 1989-03-06
JPH0439530B2 JPH0439530B2 (en) 1992-06-29

Family

ID=16679019

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21583387A Granted JPS6458710A (en) 1987-08-29 1987-08-29 Automatic backward flow preventor for waterway

Country Status (1)

Country Link
JP (1) JPS6458710A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110593228A (en) * 2019-09-25 2019-12-20 周能为 Automatic constant water device that irrigates in farmland

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110593228A (en) * 2019-09-25 2019-12-20 周能为 Automatic constant water device that irrigates in farmland

Also Published As

Publication number Publication date
JPH0439530B2 (en) 1992-06-29

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