JPH0294979U

JPH0294979U -

Info

Publication number: JPH0294979U
Application number: JP379889U
Authority: JP
Priority date: 1989-01-17
Filing date: 1989-01-17
Publication date: 1990-07-27

Description

[Brief explanation of drawings]

第１図は本考案の一実施例の逆止弁を示す概略
断面図、第２図は第１図の―線断面図、第３
図は本考案の他の実施例の逆止弁におけるボス部
の概略断面図、第４図ａ，ｂは本考案のさらに他
の実施例の逆止弁におけるボス部を示し、ａは概
略断面図、ｂはブツシユの概略斜視図、第５図お
よび第６図は本考案の他の実施例の逆止弁におけ
る軸受部の概略断面図、第７図ａ，ｂは本考案の
さらに他の実施例の逆止弁における軸受部を示し
、ａは概略断面図、ｂはブツシユの概略斜視図、
第８図は従来例の概略断面図である。１１……弁箱、１２……弁座、１３……軸受部
、１４……弁棒、１５……弁体、１６……アーム
、１７……ボス部、１９，２２……間隙。 Fig. 1 is a schematic sectional view showing a check valve according to an embodiment of the present invention, Fig. 2 is a sectional view taken along the line -- in Fig.
The figure is a schematic cross-sectional view of a boss part in a check valve according to another embodiment of the present invention, FIGS. 5 and 6 are schematic sectional views of the bearing portion of a check valve according to another embodiment of the present invention, and FIGS. 7a and 7b are schematic perspective views of the bushing. The bearing part in the check valve of the example is shown, a is a schematic sectional view, b is a schematic perspective view of the bushing,
FIG. 8 is a schematic sectional view of a conventional example. DESCRIPTION OF SYMBOLS 11... Valve box, 12... Valve seat, 13... Bearing part, 14... Valve stem, 15... Valve body, 16... Arm, 17... Boss part, 19, 22... Gap.

Claims

[Scope of utility model registration request]

A check valve in which a valve body that seals a valve seat in a valve box is swingably attached to a valve stem supported by a bearing provided in the valve box by a boss provided through an arm. . A check valve, characterized in that a gap is formed at least between the boss portion and the valve stem or between the bearing portion and the valve stem.