JPS5910571U - Backflow prevention device for fluid in the outer pipe of double piping - Google Patents

Backflow prevention device for fluid in the outer pipe of double piping

Info

Publication number
JPS5910571U
JPS5910571U JP10432682U JP10432682U JPS5910571U JP S5910571 U JPS5910571 U JP S5910571U JP 10432682 U JP10432682 U JP 10432682U JP 10432682 U JP10432682 U JP 10432682U JP S5910571 U JPS5910571 U JP S5910571U
Authority
JP
Japan
Prior art keywords
fluid
outer pipe
prevention device
double piping
backflow prevention
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
JP10432682U
Other languages
Japanese (ja)
Inventor
湯原　哲夫
Original Assignee
三菱重工業株式会社
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 三菱重工業株式会社 filed Critical 三菱重工業株式会社
Priority to JP10432682U priority Critical patent/JPS5910571U/en
Publication of JPS5910571U publication Critical patent/JPS5910571U/en
Pending legal-status Critical Current

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  • Check Valves (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図及び第２図は、本考案の一実施例の概略説明図で
、第１図は要部を切開して示す流体が正常に流通してい
る状態の側面図、第２図は外管内の流体逆流時の側面図
、第３図、第４図は、それぞれ本考案の他の実施例の要
部を切開して票す側面図である。 １、　１１．　２１：内管、２．　１２．　２２：外管
１．６．１６．２３：逆止弁、５．　１６ａ、　　２１
ａ：ストッパ。1 and 2 are schematic explanatory diagrams of an embodiment of the present invention, in which FIG. 1 is a side view showing a state where the main part is cut out and fluid is flowing normally, and FIG. 2 is an external view. 3 and 4 are side views of other embodiments of the present invention, respectively, with main parts cut away. 1, 11. 21: Inner tube, 2. 12. 22: Outer pipe 1.6.16.23: Check valve, 5. 16a, 21
a: Stopper.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 内管と外管とで構成される二重配管構造の外管の内側適
所に、その全周に亘って逆止弁と流体密に係合する保合
部を設けるとともに、内管の外周に摺動可能に嵌合され
、外管内の流体の逆流時に、その流体圧により上記係合
部と流体密に係合する逆止弁を設けてなることを特徴と
する二重配管の外管内の流体逆流防止装置。A retaining part that fluid-tightly engages with a check valve is provided around the entire circumference of the outer pipe of a double piping structure consisting of an inner pipe and an outer pipe, and a retaining part is provided on the outer circumference of the inner pipe. A check valve in an outer pipe of a double piping system is provided, which is slidably fitted in the outer pipe, and is provided with a check valve that engages the engaging portion in a fluid-tight manner due to the fluid pressure when the fluid in the outer pipe flows back. Fluid backflow prevention device.
JP10432682U 1982-07-12 1982-07-12 Backflow prevention device for fluid in the outer pipe of double piping Pending JPS5910571U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10432682U JPS5910571U (en) 1982-07-12 1982-07-12 Backflow prevention device for fluid in the outer pipe of double piping

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10432682U JPS5910571U (en) 1982-07-12 1982-07-12 Backflow prevention device for fluid in the outer pipe of double piping

Publications (1)

Publication Number Publication Date
JPS5910571U true JPS5910571U (en) 1984-01-23

Family

ID=30245013

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10432682U Pending JPS5910571U (en) 1982-07-12 1982-07-12 Backflow prevention device for fluid in the outer pipe of double piping

Country Status (1)

Country Link
JP (1) JPS5910571U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6319210U (en) * 1986-07-18 1988-02-08

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6319210U (en) * 1986-07-18 1988-02-08

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