JPS62183182U

JPS62183182U -

Info

Publication number: JPS62183182U
Application number: JP7232486U
Authority: JP
Priority date: 1986-05-14
Filing date: 1986-05-14
Publication date: 1987-11-20

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す吸気弁の断面
図。第２図は本考案に係る吸気弁を使用した水道
管凍結防止装置の概略構成図。第３Ａ図及び３Ｂ
図は第２弁体の平面図及び縦断面図。第４図は第
２弁体の誤差吸収機能を示す断面図。第５図は本
体の平面図。第６図は従来の吸気弁の一例を示す
断面図。１０……吸気弁、１１……本体、１２ｂ……第
２弁室、１３ｂ……第１弁室、１５……第１弁体
、１７……第２弁体、１８……バネ、３０……水
道管。 FIG. 1 is a sectional view of an intake valve showing an embodiment of the present invention. FIG. 2 is a schematic diagram of a water pipe antifreeze device using an intake valve according to the present invention. Figures 3A and 3B
The figures are a plan view and a longitudinal sectional view of the second valve body. FIG. 4 is a sectional view showing the error absorption function of the second valve body. FIG. 5 is a plan view of the main body. FIG. 6 is a sectional view showing an example of a conventional intake valve. 10... Intake valve, 11... Main body, 12b... Second valve chamber, 13b... First valve chamber, 15... First valve body, 17... Second valve body, 18... Spring, 30... …water pipe.

Claims

[Scope of utility model registration request]

In the water pipe freeze prevention intake valve that introduces air into the water pipe when water is drained, the first valve and the second valve are used to prevent water pipes from freezing.
The valves are arranged in a series double structure so that the first valve chamber and the second valve chamber communicate with each other, and the first valve chamber communicates with the water pipe on the opposite side of the part communicating with the second valve chamber, The part that communicates with the second valve chamber includes a first valve body and a first valve seat, which prevents fluid from flowing from the first valve chamber to the second valve chamber and prevents fluid from flowing from the second valve chamber to the first valve chamber. A check valve that allows fluid to flow in is arranged, and the second valve chamber has an opening that communicates with the outside air on the opposite side of the part that communicates with the first valve chamber, and the opening has a second valve body and a second valve body. A non-return valve is disposed, which is composed of a second valve seat and prevents fluid from flowing out from the second valve chamber to the outside, but allows fluid to flow into the second valve chamber from the outside, and the second valve body is biased by elastic biasing means. An intake valve for preventing water pipe freezing, characterized in that the intake valve is biased toward the second valve seat.