Title:
RECIPROCATING PUMP
Document Type and Number:
WIPO Patent Application WO/2018/109905
Kind Code:
A1
Abstract:
At least one rib 9c, 21c extending in a direction of connecting with a valve cartridge 30 is provided to the inner sides of each of a second connecting port 9 of a pump head 5 and a third connecting port 21 of a first connecting adapter 20A, and at least one slit 41 which extends in the connecting direction and into which the ribs 9c, 21c are loosely inserted is provided to the lower outer periphery of the valve cartridge 30. The relationship (id2b, id3b) > od1t > (id1, id4) > od2 > (id21, id3t) > od1b is satisfied, where the inside diameter of a first connecting port 8 is id1, the inside diameter of the second connecting port 9 is id2b, the inscribed diameter at the peak of the rib 9c of the second connecting port 9 is id2t, the inside diameter of the third connecting port 21 is id3b, the inscribed diameter at the peak of the rib 21c of the third connecting port 21 is id3t, the inside diameter of a fourth connecting port 23 is id4, the outside diameter of the lower outer periphery of the valve cartridge 30 is od1t, the outside diameter of the trough of the slit 41 at the lower outer periphery is od1b, and the outside diameter of the upper outer periphery of the valve cartridge 30 is od2.
Inventors:
OGAWA YOSHIO (JP)
Application Number:
PCT/JP2016/087398
Publication Date:
June 21, 2018
Filing Date:
December 15, 2016
Export Citation:
Assignee:
IWAKI CO LTD (JP)
International Classes:
F16K27/00; F04B53/10; F16K1/14
Foreign References:
| JP2013015133A | 2013-01-24 | |||
| JP2012525961A | 2012-10-25 | |||
| JPS6111473A | 1986-01-18 |
Other References:
See also references of EP 3557102A4
Attorney, Agent or Firm:
KISARAGI ASSOCIATES (JP)
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