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Patent Searching and Data


Title:
CHECK VALVE STRUCTURE AND DIAPHRAGM PUMP
Document Type and Number:
Japanese Patent JP2018189214
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a diaphragm pump capable of obtaining a stable flow characteristic, and a check valve structure suitably used in the diaphragm pump.SOLUTION: A check valve structure suitably used in a diaphragm pump uses a thin film-like check valve 20a at a tip part of which a flake-like projection part 28 is formed, wherein the tip part is a free end of a suction side valve body 25a of a cantilever support structure. The check valve structure is configured such that at a pump chamber definition member 40 and a pump head 50 holding the check valve 20a, a support part is formed so as to contact with at least a valve chamber side surface of the flake-like projection part 28, so that the tip part of the suction side valve body 25a slides with elastic deformation of the suction side valve body 25a, and thereby a suction flow passage 53 to a pump chamber Pr is opened/closed.SELECTED DRAWING: Figure 11

Inventors:
AO RYOJI
Application Number:
JP2017094418A
Publication Date:
November 29, 2018
Filing Date:
May 11, 2017
Export Citation:
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Assignee:
RIKEN KEIKI KK
International Classes:
F16K15/16; F04B45/04
Attorney, Agent or Firm:
Masahiko Oi