MULTI-HOLE NOZZLE FOR USE IN AQUATIC PEST CONTROL

Title:

MULTI-HOLE NOZZLE FOR USE IN AQUATIC PEST CONTROL

Document Type and Number:

WIPO Patent Application WO/2018/043269

Kind Code:

A1

Abstract:

Provided is a multi-hole nozzle for use in aquatic pest control which, while supplying water, physically kills aquatic pests and thereby allows intake water to be directly supplied to a culture tank or a ballast tank without the need for a pre-treatment water tank, chemical agents, or neutralizing agents. This multi-hole nozzle A for aquatic pest control has three or more adjacent nozzle holes 1, each nozzle hole 1 being configured from: an inlet-side opening section 2 having a diameter that decreases from an inlet opening to a throat section 3 at the center of the hole; an outlet-side opening section 4 having a diameter that increases from the throat section 3 to an outlet opening; and the throat section 3, which has the smallest inner diameter. The adjacent nozzle holes 1 are spaced apart by such a distance that the inlet-side opening sections 2 thereof interfere each other. Partitions 5 of the interference portions 6 of the inlet-opening sections 2 are cut out in a U-shape, and the remaining portions 5a between the adjacent U-shaped cut-out portions 5b are formed into a sharp tip.

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Inventors:

KIJIMA AKIHIRO (JP)
KOHAMA YASUAKI (JP)
IKEDA MINORU (JP)
KURITA YOSHIHISA (JP)
CHIBA IKUO (JP)
KANNO TETSUYA (JP)

Application Number:

PCT/JP2017/030262

Publication Date:

March 08, 2018

Filing Date:

August 24, 2017

Export Citation:

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Assignee:

KOWA KOGYO (JP)
AQUA IMPULSE CORP (JP)
UNIV TOHOKU (JP)

International Classes:

A01K63/04

Domestic Patent References:

WO2011108032A1

2011-09-09

Foreign References:

JP2007000843A	2007-01-11
JPH08131800A	1996-05-28
US5190647A	1993-03-02

Other References: