Title:
RECIPROCATING TYPE FLUID TRANSFER PUMP
Document Type and Number:
Japanese Patent JP3749717
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a reciprocating type fluid transfer pump capable of simply, easily and accurately assembling a pilot assembly block to a main body block, without particularly requiring working accuracy for positioning in respect to the main body block of a pilot valve assembly block.
SOLUTION: In this reciprocating type fluid transfer pump, by expanding/contracting a diaphragm 6 that is provided in an end part of a center rod 5 reciprocating in respect to the main body block 2 and that partitions a fluid transfer chamber 19 and a driving chamber 21, transferred fluid flowing into the fluid transfer chamber 19 is send out. A peripheral part of the diaphragm 6 is sandwiched in and fixed to the main body block 2 via a main ring 30, and the pilot valve assembly block 17 integrally provided with a pilot valve 16 for detecting reciprocating motion of the center rod 5 is pressed and fixed to the main ring 30 via a subring 34.
Inventors:
Shigeru Murata
Application Number:
JP2003100253A
Publication Date:
March 01, 2006
Filing Date:
April 03, 2003
Export Citation:
Assignee:
Yamada Corporation
International Classes:
F04B9/08; F04B43/02; F04B43/06; F04B43/073; (IPC1-7): F04B9/08; F04B43/02; F04B43/06
Domestic Patent References:
| JP2001165053A | ||||
| JP11504098A | ||||
| JP2003172267A |
Foreign References:
| US6106246 |
Attorney, Agent or Firm:
Kazuo Shamoto
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita