JPS5842276U

JPS5842276U - air valve antifreeze device

Info

Publication number: JPS5842276U
Application number: JP13768381U
Authority: JP
Inventors: 栄二森田
Original assignee: 株式会社栗本鉄工所
Priority date: 1981-09-18
Filing date: 1981-09-18
Publication date: 1983-03-19
Also published as: JPS6132213Y2

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

[Brief explanation of drawings]

第１図はこの考案の実施例の縦断正面図、第２゛図は第
１図■−■線に沿ってみた要部拡大図、第３図は作用を
説明する要部の縦断正面図である。１・・・Ｔ字管、５・・・空気弁、６・・・弁箱、７・
・・開口、１２・・・案内筒、１３・・・遊動弁体、１
５・・・下部筒体、１６・・・上部筒体、１９・・・通
気孔、２０・・・排水孔、２１・・・フロート弁、２２
・・・連通管、２６・・・受圧部材、２７・・・小孔。第３図Fig. 1 is a longitudinal sectional front view of an embodiment of this invention, Fig. 2 is an enlarged view of the main parts taken along the line ■-■ in Fig. 1, and Fig. 3 is a vertical sectional front view of the main parts to explain the operation. be. 1... T-shaped pipe, 5... Air valve, 6... Valve box, 7...
...Opening, 12...Guide tube, 13...Idle valve body, 1
5... Lower cylindrical body, 16... Upper cylindrical body, 19... Vent hole, 20... Drain hole, 21... Float valve, 22
...Communication pipe, 26...Pressure receiving member, 27...Small hole. Figure 3

Claims

[Scope of Claim for Utility Model Registration] ■ A valve and a box having an opening in the earthen wall are installed in the upper part of the water pipeline, and a floating valve body is installed inside the valve box so that it can be raised and lowered via a guide member. The floating valve body consists of a lower cylindrical body having a large number of through holes in its peripheral wall, and an upper cylindrical body that has a smaller diameter than the lower cylindrical body and can be slid into the opening and protrude to the outside. A vertical ventilation hole communicating with the valve opening of the valve seat arranged on the lower cylinder side is provided in the earthen wall, and a horizontal drainage hole is provided in this ventilation hole to communicate with the outside from the side wall of the upper cylinder body, and the above-mentioned A communication pipe is provided, one end of which is connected to the inside of the valve box, and the other end of which protrudes from the center of the water supply pipe, and the other end of the communication pipe has a shape that expands from the upstream side to the downstream side. 1. A freezing prevention device for an air valve, characterized in that a pressure receiving member having a sloped surface is provided, and a through hole communicating with the communication pipe is bored in a downstream surface of the pressure receiving member. 2. The antifreeze device for an air valve according to claim 1, wherein the pressure receiving member is rotatable around the communication pipe.