Water injection apparatus for water jet loom

Patent metadata

Field	Value
Publication number	US-11242627-B2
Application number	US-201916238975-A
Country	US
Kind code	B2
Filing date	Jan 3, 2019
Priority date	Jan 31, 2018
Publication date	Feb 8, 2022
Grant date	Feb 8, 2022

Abstract

A water injection apparatus for a water jet loom, includes a weft insertion nozzle for weft insertion of a weft yarn by injection water, a weft insertion pump pumping water into the weft insertion nozzle, a water storage tank storing water introduced into the weft insertion pump, and a suction pipe passing water from the water storage tank into the weft insertion pump. The water injection apparatus includes an auxiliary water supply unit that is provided separately from the weft insertion pump and can supply water to the suction pipe. At least when the weft insertion pump sucks water, the auxiliary water supply unit supplies water to the suction pipe.

First claim

What is claimed is:

1. A water injection apparatus for a water jet loom, comprising:
a weft insertion nozzle for weft insertion of a weft yarn by injection water;
a weft insertion pump pumping water into the weft insertion nozzle;
a water storage tank storing water introduced into the weft insertion pump; and
a suction pipe passing water from the water storage tank into the weft insertion pump, wherein the water injection apparatus includes an auxiliary water supply unit that is provided separately from the weft insertion pump, the auxiliary water supply unit including an auxiliary water supply pipe having one end that is connected to the suction pipe and another end that is connected to an auxiliary water supply source, the auxiliary water supply unit supplying water to the suction pipe at least when the weft insertion pump sucks water,
wherein the one end of the auxiliary water supply pipe is connected to a portion of the suction pipe located between the water storage tank into the weft insertion pump.

2. The water injection apparatus for the water jet loom, according to claim 1 , wherein the auxiliary water supply unit continuously supplies water to the suction pipe during operation of the water jet loom.

3. The water injection apparatus for the water jet loom, according to claim 1 , wherein the auxiliary water supply unit includes a valve that is connected to a tap water supply source and shuts off flow of tap water from the tap water supply source.

4. The water injection apparatus for the water jet loom, according to claim 1 , wherein the auxiliary water supply unit includes an auxiliary water supply pump that supplies water to the suction pipe.

Assignees

• Toyota Jidoshokki Kk

Inventors

• Yamauchi Yasushi
• Tsujimoto Koichi
• Hattori Kouichi
• Sumiya Kenji
• Okuda Taijirou

Classifications

• D03D47/32 Primary

  by liquid jet · CPC title

• B05B1/00

  Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means (B05B3/00, B05B5/00, B05B7/00 take precedence; devices for applying liquids or other fluent materials to surfaces by contact B05C; nozzles for ink-jet printing mechanisms B41J2/135; nozzles for liquid-dispensing, e.g. in vehicle service stations, B67D7/42) · CPC title