JPS6338686U

JPS6338686U -

Info

Publication number: JPS6338686U
Application number: JP13228486U
Authority: JP
Priority date: 1986-08-29
Filing date: 1986-08-29
Publication date: 1988-03-12

Description

[Brief explanation of the drawing]

図面は本考案に係るベローズポンプの一実施例
を示すもので、第１図は各溶接部分を一部拡大し
てベローズポンプ全体構成を示す第２図―線
相当部における縦断面図、第２図は同じく第１図
―線におけるポンプヘツドの吐出口及び吸込
口に接合された接続チユーブの溶接部分を一部拡
大して示す断面図である。１：筒状本体、２，３：ポンプカバー、４：ポ
ンプヘツド、５：基体、６，７：連通路、８：吐
出口、９：吸込口、１０，１０ａ，１０ｂ，１０
ｃ：合成樹脂素材、１１：一方向制御弁、１６，
１７：ベローズ体、１６ｂ，１７ｂ：接合部、１
８，１９：ポンプ室、２３，２４：作動室、Ａ，
Ｂ，Ｃ：溶接部。 The drawings show an embodiment of the bellows pump according to the present invention, and FIG. 1 is a partially enlarged view of each welded part to show the overall configuration of the bellows pump. This figure is a partially enlarged cross-sectional view showing the welded portion of the connecting tube joined to the discharge port and suction port of the pump head, taken along the line in FIG. 1. 1: Cylindrical body, 2, 3: Pump cover, 4: Pump head, 5: Base, 6, 7: Communication path, 8: Discharge port, 9: Suction port, 10, 10a, 10b, 10
c: synthetic resin material, 11: one-way control valve, 16,
17: Bellows body, 16b, 17b: Joint part, 1
8, 19: Pump chamber, 23, 24: Working chamber, A,
B, C: Welded parts.

Claims

[Claims for Utility Model Registration] (1) A pump head equipped with a suction port and a discharge port and connected to a one-way control valve is disposed in a cylindrical body whose end is closed with a head cover, and a pump head that is extendable and retractable is provided. A flexible bellows body is joined to form a pump chamber communicating with the suction port and the discharge port via a one-way control valve, and an outer chamber formed between the head cover of the cylindrical body and the bellows body. In a bellows pump that serves as a working chamber for introducing gas pressure and performs a pump feeding operation by applying gas pressure to this working chamber and causing it to reciprocate, a joint portion where the bellows body and at least the bellows body of the pump head are joined. and a portion corresponding to the liquid contact portion are formed of a synthetic resin material made of perfluoroalkoxy resin, and the joint portion between the pump head and the bellows body can be welded. (2) A request for utility model registration in which at least the joint part where the bellows body is joined and the surface part corresponding to the liquid contact part of a pump head made of a solid structure made of metal material are lined with a synthetic resin material made of perfluoroalkoxy resin. Bellows pumps described in scope item (1). (3) The bellows pump according to claim 1, wherein the assembly components such as the one-way control valve disposed in the wetted part are made of a synthetic resin material made of perfluoroalkoxy resin.