JPH0487984U

JPH0487984U -

Info

Publication number: JPH0487984U
Application number: JP40362490U
Authority: JP
Priority date: 1990-12-18
Filing date: 1990-12-18
Publication date: 1992-07-30

Description

[Brief explanation of the drawing]

第１図は本考案による一実施例の送液ポンプの
断面図、第２図および第３図は上記送液ポンプの
動作を説明するための断面図であり、第２図はセ
ンタシヤフトが右方向に移動した状態を示し、第
３図はセンタシヤフトが左方向に移動した状態を
示し、第４図は従来の送液ポンプの断面図である
。符号の説明、１……ポンプボデイ、２，９……
ポンプヘツド、３……吸入路、４……液吸入口、
５，１０……吸入側逆止弁、６，１１……液室、
７，１２……吐出側逆止弁、８……吐出路、１３
……吐出路、１４……摺動案内部材、１５……セ
ンタロツド、１９，２０……ダイヤフラム、２１
，２２……ベローズ、２７，２８……主空気室、
２９，３１，３４，３６……空気通路、３０，３
５……空気室、３２……切換え弁、３３……コン
プレツサ。 FIG. 1 is a cross-sectional view of a liquid pump according to an embodiment of the present invention, and FIGS. 2 and 3 are cross-sectional views for explaining the operation of the liquid pump. FIG. 3 shows a state in which the center shaft has moved in the left direction, and FIG. 4 is a sectional view of a conventional liquid feeding pump. Explanation of symbols, 1... Pump body, 2, 9...
Pump head, 3...Suction path, 4...Liquid inlet,
5, 10... Suction side check valve, 6, 11... Liquid chamber,
7, 12...Discharge side check valve, 8...Discharge path, 13
...Discharge path, 14...Sliding guide member, 15...Center rod, 19, 20...Diaphragm, 21
, 22... bellows, 27, 28... main air chamber,
29, 31, 34, 36...Air passage, 30, 3
5...Air chamber, 32...Switching valve, 33...Compressor.

Claims

[Claims for Utility Model Registration] 1. A liquid chamber communicating with a liquid inlet and a liquid outlet is separated from a working chamber by a flexible movable wall, and working fluid pressure is applied to the working chamber to close the flexible movable wall. In a liquid transfer pump that discharges liquid that has flowed into the liquid chamber from the liquid inlet into the liquid chamber from the liquid discharge port and transfers it to the outside by reciprocating the liquid chamber toward the liquid chamber, the liquid chamber and the working chamber are separated. A liquid pump that is separated by a heavy flexible movable wall. 2. A liquid feeding pump characterized in that the same working fluid pressure is applied to the working chamber and the cavity formed between the double flexible movable walls.