Chemical storage container

Patent metadata

Field	Value
Publication number	US-2016009472-A1
Application number	US-201414772185-A
Country	US
Kind code	A1
Filing date	Mar 6, 2014
Priority date	Mar 7, 2013
Publication date	Jan 14, 2016
Grant date	—

Abstract

A chemical storage container enables easy installation of a chemical nozzle and a pressurized gas supply nozzle. The chemical storage container includes a metal can having a top opening, a chemical storage bag disposed in the metal can and an ejection member mounted to the chemical storage bag. The top opening of the metal can is closed by a lid to which a chemical nozzle and a pressurized gas supply nozzle are mounted. The chemical nozzle penetrates through the ejection member. A pressurized gas from the pressurized gas supply nozzle is supplied through the ejection member into a pressurization space formed between the metal can and the chemical storage bag.

First claim

1 . A chemical storage container for storing a liquid chemical, comprising:
an outer can having a top opening; a chemical storage bag for storing a liquid chemical and configured to be disposed in the outer can; an ejection member configured to be mounted to an upper end of the chemical storage bag; and a lid configured to close the top opening of the outer can and cover the ejection member, wherein the lid has a chemical nozzle for discharging the liquid chemical configured to penetrate through the ejection member and a pressurized gas supply nozzle for supplying a pressurized gas into the ejection member.

2 . The chemical storage container according to claim 1 , wherein
the lid is configured to be fixed to a portion of the outer can, located around the top opening.

3 . The chemical storage container according to claim 1 , wherein
an interior of the ejection member is divided into a chemical nozzle space through which the chemical nozzle penetrates, and a pressurized gas space which is to be filled with the pressurized gas, and wherein the ejection member has a through-hole which is configured to connect the pressurized gas space to a pressurization space formed between the outer can and the chemical storage bag.

4 . The chemical storage container according to claim 3 , wherein
the ejection member is provided with a partition wall which divides the interior of the ejection member into the chemical nozzle space and the pressurized gas space.

5 . The chemical storage container according to claim 3 , wherein
the lid is provided with a partition wall which divides the interior of the ejection member into the chemical nozzle space and the pressurized gas space.

6 . The chemical storage container according to claim 1 , wherein
the ejection member has a peripheral flange at an upper end thereof, and the peripheral flange is configured to be fit into the top opening.

7 . The chemical storage container according to claim 6 , wherein
the peripheral flange is configured to be sandwiched between an upper surface of the outer can and a lower surface of the lid.

8 . The chemical storage container according to claim 1 , wherein
the ejection member has a coupling portion configured to extend toward the upper end of the chemical storage bag, the coupling portion has a seal fixing portion at a lower end thereof, and the seal fixing portion has an elliptical shape in a plan view.

9 . The chemical storage container according to claim 3 , wherein
the pressurization space is configured to be arranged around a circumference of the chemical storage bag.

10 . The chemical storage container according to claim 3 , wherein
the pressurization space has a broader part forming a clearance between the ejection member and the upper end of the chemical storage bag, and a narrower part forming a clearance between the outer can and the chemical storage bag, the narrower part being narrower than the broader part.

11 . The chemical storage container according to claim 10 , wherein
the clearance of the narrower part is uniform in an unpressurized state.

12 . The chemical storage container according to claim 1 , wherein
the chemical storage bag includes an inner bag and an outer bag overlaying the inner bag.

13 . The chemical storage container according to claim 12 , wherein
the inner bag has a curved corner at a lower end of the inner bag.

14 . A chemical storage structure comprising:
a bag for storing a liquid chemical; and an ejection member mounted to the upper end of the bag, the ejection member having a through-hole at a bottom thereof, wherein an interior of the ejection member is divided into a chemical nozzle space through which a chemical nozzle is configured to penetrate, and a pressurized gas space which is to be filled with a pressurized gas, and wherein the through-hole is configured to connect the pressurized gas space to a pressurization space formed on an outer surface of the bag.

15 . The chemical storage structure according to claim 14 , wherein
the ejection member has a peripheral flange at the upper end thereof.

16 . A method of discharging a liquid chemical comprising the steps of:
providing the chemical storage container for storing a liquid chemical according to claim 1 ; supplying the pressurized gas into a pressurized gas space through the pressurized gas supply nozzle, the pressurized gas space being formed in an interior of the ejection member; and supplying the pressurized gas from the pressurized gas space to a pressurization space formed between the outer can and the chemical storage bag to thereby externally pressurize the chemical storage bag such that the liquid chemical is discharged from the chemical storage bag through the chemical nozzle.

17 . The method of discharging a liquid chemical according to claim 16 , further comprising a step of:
monitoring a pressure in the pressurized gas space.

Assignees

• Dainippon Printing Co Ltd

Inventors

• Motai Katsuyuki
• Miyake Masato

Classifications

• B65D83/32

  Dip-tubes · CPC title

• B65D83/62

  by membranes, bags or the like · CPC title

• B65D83/756

  comprising connectors, e.g. for tyre valves, or actuators connected to the aerosol container by a flexible tube · CPC title

• B65D77/06 Primary

  Liquids or semi-liquids {or other materials or articles} enclosed in flexible containers disposed within rigid containers · CPC title

• B65D85/84

  for corrosive chemicals · CPC title