JPS62185881U

JPS62185881U -

Info

Publication number: JPS62185881U
Application number: JP7394186U
Authority: JP
Priority date: 1986-05-19
Filing date: 1986-05-19
Publication date: 1987-11-26

Description

[Brief explanation of the drawing]

第１図は本考案に係る往復動ポンプ用逆止弁の
一実施例を示す断面図、第２図は第１図に示す逆
止弁の外縁部の変形例を示す断面図、第３図は従
来の往復動ポンプの典型的なポンプ部の構成例を
示す要部断面図、第４図は従来の往復動ポンプに
使用されている逆止弁の一構成例を示す断面図、
第５図は従来の往復動ポンプに使用されている逆
止弁の別の構成例を示す断面図である。１０…ダイアフラムヘツド、１２…ダイアフラ
ム、１４…ポンプ室、１６…逆止弁、１８…逆止
弁、２０…吸込管、２２…吐出管、２４…ボール
、２６…ボールガイド、２８…弁座、３０…ガス
ケツト、３２…ボールガイド、３４…弁座、３６
…ボール、３８…ボール受部、４０…円筒部、４
２…フランジ部、４４…外縁部、４６…環状溝部
。 FIG. 1 is a cross-sectional view showing an embodiment of the check valve for a reciprocating pump according to the present invention, FIG. 2 is a cross-sectional view showing a modification of the outer edge of the check valve shown in FIG. 1, and FIG. 4 is a cross-sectional view of a main part showing an example of the configuration of a typical pump part of a conventional reciprocating pump, and FIG. 4 is a cross-sectional view showing an example of the configuration of a check valve used in a conventional reciprocating pump.
FIG. 5 is a sectional view showing another configuration example of a check valve used in a conventional reciprocating pump. DESCRIPTION OF SYMBOLS 10...Diaphragm head, 12...Diaphragm, 14...Pump chamber, 16...Check valve, 18...Check valve, 20...Suction pipe, 22...Discharge pipe, 24...Ball, 26...Ball guide, 28...Valve seat, 30...Gasket, 32...Ball guide, 34...Valve seat, 36
...Ball, 38...Ball receiving part, 40...Cylindrical part, 4
2...Flange part, 44...Outer edge part, 46...Annular groove part.

Claims

[Claims for Utility Model Registration] (1) A valve seat and a ball seated on the valve seat are provided, and the ball is swingably housed in a space formed by a ball guide in contact with the outer edge of the valve seat. In addition, in the check valve for a reciprocating pump in which the valve seat and the ball guide are clamped to a suction port and a discharge port communicating with a pump chamber of a reciprocating pump, the valve seat is made of an elastic material having a liquid leakage prevention function. A structure of a check valve for a reciprocating pump, characterized in that the outer edge of the valve seat that contacts the ball guide is slightly raised and an annular groove is provided inside the outer edge. (2) In the structure of the check valve for a reciprocating pump as described in Claim 1 of the Utility Model Registration Claim, the valve seat has an upper part that is a cylindrical part with a ball receiving part provided at the upper end, and a lower part that is in contact with one end of the ball guide. A structure of a check valve for a reciprocating pump consisting of a flange portion in contact with the flange portion, the outer edge portion of the flange portion being raised up, and an annular groove portion provided inside the flange portion.