JPS622871U

JPS622871U -

Info

Publication number: JPS622871U
Application number: JP9525385U
Authority: JP
Priority date: 1985-06-22
Filing date: 1985-06-22
Publication date: 1987-01-09

Description

[Brief explanation of the drawing]

第１図乃至第５図は本考案の実施例に係り、第
１図はシートリング部分の要部拡大断面図、第２
図は第１図のＡ―Ａ線断面図、第３図はゲートバ
ルブの断面図、第４図は同側面図、第５図は同底
面図、第６図は異なつた実施例に係るシートリン
グ部分の要部拡大断面図、第７図は第６図のＢ―
Ｂ線断面図、第８図はさらに異なつた実施例に係
るシートリング部分の要部拡大断面図、第９図は
第８図のＣ―Ｃ線断面図、第１０図及び第１１図
はそれぞれ異なつた従来例に係るシートリング部
分の要部拡大断面図である。１……ゲートバルブ、２……ボデイ、３……流
路、１２……ゲート、１５……シートリング｛１
５ａ……上流側端面、１５ｂ……下流側端面｝、
１７……内周孔、４３……パツキン、４６……環
状溝、４７，４８……パツキン材通路、５１，５
２……パツキン材注入通路。 1 to 5 relate to an embodiment of the present invention, in which FIG. 1 is an enlarged sectional view of the main part of the seat ring portion, and FIG.
The figures are a sectional view taken along the line A-A in Fig. 1, Fig. 3 is a sectional view of the gate valve, Fig. 4 is a side view of the same, Fig. 5 is a bottom view of the same, and Fig. 6 is a seat according to a different embodiment. An enlarged sectional view of the main part of the ring part, Figure 7 is B- in Figure 6.
8 is an enlarged sectional view of a main part of a seat ring according to a different embodiment, FIG. 9 is a sectional view taken along line C--C in FIG. 8, and FIGS. 10 and 11 are respectively FIG. 7 is an enlarged sectional view of a main part of a seat ring portion according to a different conventional example. 1... Gate valve, 2... Body, 3... Channel, 12... Gate, 15... Seat ring {1
5a...upstream end face, 15b...downstream end face},
17... Inner peripheral hole, 43... Packing, 46... Annular groove, 47, 48... Packing material passage, 51, 5
2... Packing material injection passage.

Claims

[Scope of utility model registration request]

A body 2 through which a flow path 3 is passed, and an inner peripheral hole 1
The upstream end surface of the seat ring 15 includes a seat ring 15 that is installed inside the body 2 so that the gate 7 becomes a part of the flow path 3, and a gate 12 that is installed inside the body 2 and can freely open and close the flow path 3. 15a is gate 12
In the gate valve 1 whose downstream end face 15b is pressed against the body 2 via the gasket 43 by fluid pressure, the seat ring 1
An annular groove 46 is formed in the upstream end surface 15a of 5,
The groove 46 and the downstream end surface 15b of the seat ring 15
Seal material passages 47, 48 are provided through the seat ring 15 and open to the seal material passages 47, 48.
The opening of the downstream end surface 15b of 48 is the opening of the gasket 4.
3 and further formed by the annular groove 46 and the gate 12, an opening in the downstream end surface 15b of the packing material passages 46, 47 and the outside of the body 2 are connected. A gate valve characterized in that gasket material injection passages 51 and 52 are formed in a body 2 to communicate with each other.