JPH0393865U

JPH0393865U -

Info

Publication number: JPH0393865U
Application number: JP14151489U
Authority: JP
Priority date: 1989-12-05
Filing date: 1989-12-05
Publication date: 1991-09-25
Anticipated expiration: 2004-12-05
Also published as: JPH0721661Y2

Description

[Brief explanation of the drawing]

第１図は従来例を示す縦断面図であり、第２図
は一般的施工例を示す概略図であり。第３図は本
考案の一実施例を示す縦断面図である。１……弁箱、２……流入口、３……流出口、４
……大径シリンダ、５……小径シリンダ、６……
弁座、７……排水孔、８，９……環状パツキン、
１１……駒パツキン、１２……ピストン状弁体、
１３……縦穴、１４……環状逆止パツキン、１５
……逆止弁体、１７……逆止ばね、１８……逃が
しばねである。 FIG. 1 is a vertical sectional view showing a conventional example, and FIG. 2 is a schematic diagram showing a general construction example. FIG. 3 is a longitudinal sectional view showing an embodiment of the present invention. 1... Valve box, 2... Inlet, 3... Outlet, 4
...Large diameter cylinder, 5...Small diameter cylinder, 6...
Valve seat, 7... Drain hole, 8, 9... Annular packing,
11... Piece packing, 12... Piston-shaped valve body,
13... Vertical hole, 14... Annular check packing, 15
...Check valve body, 17...Check spring, 18...Relief spring.

補正平２．１１．２９実用新案登録請求の範囲を次のように補正する
。Amendment November 29, 2002 The scope of claims for utility model registration is amended as follows.

【実用新案登録請求の範囲】流入口、流出口間に小径シリンダをもうけ、前
記小径シリンダの上端に上向きの弁座を形成し、
前記弁座の上方に大径シリンダを配置するととも
に、前記大径シリンダの中間部に排水口を穿つた
弁箱と、前記大径シリンダを摺動する環状パツキ
ンおよび下端に前記弁座を閉塞する駒パツキンを
装着し、内部に上端が閉じられた縦穴を穿つたピ
ストン状弁体と、前記縦穴内を上下動し、下端に
、前記小径シリンダに密着、上下に離脱する環状
逆止パツキンを装着する逆止弁体と、前記逆止弁
体を囲繞するように前記縦穴内に収容され、前記
逆止弁体を上向きに押圧しうる逃がしばねとを備
えた逆流防止型不凍給水栓。[Claims for Utility Model Registration] A small-diameter cylinder is provided between an inlet and an outlet, and an upwardly facing valve seat is formed at the upper end of the small-diameter cylinder,
A large-diameter cylinder is arranged above the valve seat, a valve box having a drainage port bored in the middle of the large-diameter cylinder, an annular packing that slides on the large-diameter cylinder, and a lower end that closes the valve seat. A piston-shaped valve body is equipped with a piston-like valve body that has a vertical hole with a closed upper end inside, and an annular check valve body that moves up and down in the vertical hole and is attached to the lower end of the valve body that tightly contacts the small-diameter cylinder and detaches up and down. and a relief spring that is housed in the vertical hole so as to surround the check valve body and can press the check valve body upward. plug.

Claims

[Scope of utility model registration request]

A small diameter cylinder is provided between the inflow port and the outflow port, and an upwardly facing valve seat is formed at the upper end of the small diameter cylinder,
A large-diameter cylinder is disposed above the valve seat, a valve box having a drainage port bored in the middle part of the large-diameter cylinder, an annular packing that slides on the large-diameter cylinder of the valve box, and the valve seat at the lower end. a piston-shaped valve body with a vertical hole bored inside with a closed upper end, and a piston-shaped valve body that moves up and down within the vertical hole;
a check valve body having an annular check gasket attached to the lower end that is in close contact with the small-diameter cylinder and detachable up and down; a weak check spring that applies a downward pressing force to the check valve body; and a check valve body. and a weak relief spring that is housed in the vertical hole so as to surround the check valve body and can press the check valve element upward.