JP6597247B2 - Chemical container, chemical nozzle, liquid filling method, and liquid discharging method - Google Patents

Description

  The present invention relates to a chemical solution storage container for storing a chemical solution such as an electrolyte for a lithium ion battery, a chemical solution nozzle, a liquid filling method, and a liquid discharging method.

  Conventionally, for example, a chemical solution such as an electrolyte solution for a lithium ion battery is stored in a canister can (metal can), and a metal can storing the chemical solution is conveyed. And if necessary, the chemical solution is taken out from the inside of the metal can and used.

  The inside of the metal can from which the chemical solution has been taken out is then cleaned, and the chemical solution is stored and transported again next time.

  By the way, it is necessary to handle the electrolyte for the lithium battery carefully, and once cleaning the metal can containing the electrolyte for the lithium battery, it is necessary to clean with high precision, and the cleaning cost of the metal can is expensive. It has become.

  For example, for canister can cleaning, in addition to removing the contents, it is necessary to set up a process so that no residue remains after cleaning (Patent Document 1).

JP 10-436

  As described above, when a chemical solution such as an electrolyte for a lithium battery is stored in a metal can, it is necessary to clean the inside of the metal can each time the chemical solution is taken out, and this cleaning cost is expensive.

On the other hand, a chemical solution storage bag is placed in a metal can, a chemical solution nozzle is provided through the metal can and the chemical solution storage bag, and the chemical solution storage device discharges the chemical solution in the chemical solution storage bag to the outside through the chemical solution nozzle. Containers have also been developed. In this case, N ₂ gas is supplied as a pressurized gas from a nitrogen gas (N ₂ gas) supply nozzle to the space between the metal can and the chemical solution storage bag, and the chemical solution in the chemical solution storage bag is removed by this pressurized gas. To the direction. The chemical liquid nozzle and N ₂ gas supply nozzle is held by a pouring member and a metal can provided in the chemical storage bag.

  Thus, a chemical solution storage container has been developed in which a chemical solution storage bag is arranged in a metal can. In this case, the chemical solution in the chemical solution storage bag is discharged to the outside through a chemical solution nozzle. In general, since the chemical solution storage bag is made of a synthetic resin, the chemical solution storage bag may be damaged by the lower end of the chemical solution nozzle during use.

  Also, when the liquid is poured out, the flexible chemical solution storage bag is deflated and the opening provided at the lower end of the chemical solution nozzle is closed, resulting in a problem that the internal chemical solution cannot be sufficiently discharged. There is.

  The present invention has been made in consideration of such points, and the chemical solution storage bag is not damaged by the chemical solution nozzle during use, and further, the chemical solution storage bag interior is not blocked without closing the opening portion of the chemical solution nozzle. It is an object of the present invention to provide a chemical solution storage container, a chemical solution nozzle, a liquid filling method, and a liquid discharging method that can sufficiently dispense the chemical solution.

  The present invention is a chemical solution storage container comprising: an outer container having an upper opening; and a chemical solution storage bag that is disposed in the outer container and that is provided with a pouring member at an upper end portion and stores a chemical solution therein. The pouring member is disposed in the upper opening of the outer container, and a lid body that seals the upper opening of the outer container is provided to cover the pouring member. There are provided a chemical solution nozzle that passes through the member and discharges the chemical solution, and a pressurized gas supply nozzle that supplies pressurized gas into the dispensing member. The chemical solution nozzle includes a nozzle body, and the nozzle body. It is a chemical | medical solution storage container characterized by having a front-end | tip part which is arrange | positioned at the lower end of this and has a curved surface.

  In the present invention, the nozzle body may include a metal, and the tip may include a synthetic resin.

  In the present invention, the nozzle body and the tip may include metal.

  In the present invention, the nozzle body and the tip may include a synthetic resin.

  In the present invention, the nozzle body may include a synthetic resin, and the tip portion may include a metal.

  In the present invention, an opening may be formed in the tip portion.

  In the present invention, a plurality of openings may be formed in the nozzle body side wall of the chemical liquid nozzle.

  According to the present invention, the inside of the dispensing member is partitioned into a chemical solution nozzle space through which the chemical solution nozzle passes and communicates with the chemical solution storage bag, and a pressurized gas space filled with pressurized gas. The outlet member has a communication hole that communicates the pressurized space between the outer container and the chemical solution storage bag and the pressurized gas space, and is connected to the chemical solution nozzle in the lid body. A nozzle connector, a first dry air discharge opening connector communicating with the chemical liquid nozzle space, a pressurized gas supply nozzle connector and a second dry air discharge opening connector communicating with the pressurized gas space are formed, The nozzle connector and the pressurized gas supply nozzle connector may each be connectable to a dry air supply source via a supply line.

  In the present invention, each supply line, the first dry air discharge opening connector, and the second dry air discharge opening connector may be connectable to a dew point meter connecting portion for connecting a dew point meter.

  The present invention is a chemical solution storage container comprising: an outer container having an upper opening; and a chemical solution storage bag that is disposed in the outer container and that is provided with a pouring member at an upper end portion and stores a chemical solution therein. The dispensing member is disposed in the upper opening of the outer container, and a chemical solution nozzle for discharging the chemical solution is inserted into the dispensing member. The chemical solution nozzle includes a nozzle body and the nozzle body. And a tip end portion having a curved surface.

  In the present invention, a communication hole communicating with the pressurized air between the outer container and the chemical solution storage bag may be provided in the dispensing member, and a pressurized gas supply nozzle may be communicated with the communication hole. .

  In the present invention, the tip portion may be integrally formed with the chemical nozzle body.

  The present invention is a liquid filling method using a chemical solution storage container, wherein gas is supplied from the dispensing member of the liquid storage container into the chemical solution storage bag via the chemical solution nozzle, and the chemical solution storage bag is provided. A liquid filling method comprising: inflating the liquid in the outer container; and filling the liquid into the chemical liquid storage bag from the dispensing member via the chemical liquid nozzle. .

  The present invention is a method for dispensing a liquid using a chemical storage container, the step of filling a liquid in the chemical storage bag of the liquid storage container, and the liquid filled in the chemical storage bag A method for discharging a liquid, comprising a step of discharging from the pouring member through a working nozzle.

  The present invention provides a chemical solution nozzle that is used by being inserted into a chemical solution storage bag of a chemical solution storage container, and has a nozzle body and a tip portion attached to the lower end of the nozzle body and having a curved surface. Good.

  In the present invention, the nozzle body may include a metal, and the tip may include a synthetic resin.

  In the present invention, the nozzle body and the tip may include metal.

  In the present invention, the nozzle body and the tip may include a synthetic resin.

  In the present invention, the nozzle body may include a synthetic resin, and the tip portion may include a metal.

  In the present invention, an opening may be formed in the tip portion.

  In the present invention, a plurality of openings may be formed in the side wall of the nozzle body.

  As described above, according to the present invention, the chemical solution storage bag can be prevented from being damaged by the chemical solution nozzle during use, and the chemical solution nozzle is prevented from being blocked and the chemical solution in the chemical solution storage bag is sufficiently discharged. can do.

FIG. 1 is an overall schematic view showing a chemical solution storage container according to the present invention. FIG. 2 is an enlarged side view showing the dispensing member. FIG. 3 is a plan view showing a dispensing member of the chemical solution storage container. FIG. 4 is a schematic side view showing a chemical solution storage bag. Fig.5 (a) is sectional drawing which shows the material for inner bags, FIG.5 (b) is sectional drawing which shows the material for outer bags. FIG. 6 is a schematic view showing a chemical liquid nozzle. Fig.7 (a) is an enlarged view which shows the nozzle cap (tip part) of the nozzle for chemical | medical solutions, and FIG.7 (b)-FIG.7 (f) are figures which show the modification of a nozzle cap. FIG. 8 shows a dry air supply line and a discharge line. FIG. 9 is a diagram showing a connection structure of a dew point meter.

<Embodiment of the Invention>
Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 thru | or FIG. 9 is a figure which shows embodiment of the chemical | medical solution storage container by this invention.

  First, an outline of the chemical solution storage container will be described with reference to FIGS. 1 to 3.

  As shown in FIGS. 1 to 3, the chemical solution storage container 1 includes a chemical solution storage bag 10 for storing a chemical solution that stores a chemical solution such as an electrolyte for a lithium ion battery, and the chemical solution storage bag 10 disposed therein. A metal outer container (hereinafter also referred to as a metal can) 2 is provided. The outer container 2 can be made of a synthetic resin in addition to a metal.

  The chemical solution storage bag 10 stores a chemical solution such as an electrolyte solution for a lithium ion battery. In addition to the electrolyte solution for a lithium ion battery, a chemical solution for resist removal, a chemical solution for etching, or other materials used in a semiconductor manufacturing process. It can also store chemical solutions.

  The chemical solution storage bag 10 may contain a resist removal chemical solution or etching solution used in the lead frame manufacturing process, or may contain a resist removal chemical solution or etching solution used in the suspension substrate manufacturing process. Further, printing ink used in the printing process may be stored.

For example, as the electrolyte solution for lithium ion batteries stored in the chemical solution storage bag 10, an organic electrolyte solution containing Li ions such as LiClO ₄ and LiPF ₆ can be used.

  Since such an organic electrolytic solution dislikes moisture, halogen, metal ions, etc., a material that contains as little moisture, halogen, metal ions, etc. as possible is used for the inner bag 11 that stores the organic electrolyte as described later. It is done.

  The metal can 2 has an upper opening 2 a, and the upper opening 2 a is sealed with a lid 5. The metal can 2 and the lid 5 are made of stainless steel as a whole.

  As shown in FIG. 4, the chemical solution storage bag 10 contains a chemical solution 3 such as an electrolyte for a lithium ion battery and surrounds the inner bag 11 and a flexible synthetic resin inner bag 11. The outer bag 12 is made of a synthetic resin having flexibility, and the pouring member 15 extends through the inner bag 11 and the outer bag 12.

  Next, referring to FIGS. 1 to 3, the mounting structure of the extraction member 15 and the lid 5 will be described.

  As shown in FIGS. 1 to 3, the pouring member 15 is fitted into the upper opening 2 a of the metal can 2, and the lid 5 is provided so as to cover the pouring member 15, and the upper opening 2 a of the metal can 2 is formed. The lid 5 is fixed by being bolted with a plurality of bolts 6 around the periphery of the upper opening 2 a of the metal can 2.

  The dispensing member 15 will be further described. The pouring member 15 has a bottom surface 22, a side surface 23 at the periphery of the bottom surface 22, and a peripheral flange 21 provided at the upper end of the side surface 23, and the side surface 23 is fitted into the inner surface of the upper opening 2 a of the metal can 2. Thus, the pouring member 15 is positioned in the upper opening 2 a of the metal can 2.

  Further, a chemical solution nozzle space 15A extending through a chemical solution nozzle (also referred to as a dip tube) 16 to be described later and a pressurized gas supplied from a pressurized gas supply nozzle 17 to be described later are supplied to the extraction member 15. A cylindrical partition wall 20 that partitions into a pressurized gas space 15B to be filled is provided. That is, the cylindrical partition wall 20 of the dispensing member 15 has a chemical solution nozzle space 15 </ b> A through which the chemical solution nozzle 16 penetrates, and the outside of the partition wall 20 in the dispensing member 15 is pressurized. It is a gas space 15B.

  In this case, a partition wall 5 a that contacts the inner surface of the partition wall 20 of the pouring member 15 is also provided on the lower surface of the lid body 5, and the partition wall 20 of the pouring member 15 and the partition wall 5 a of the lid body 5 are used for pouring. The inside of the outlet member 15 is partitioned into a chemical solution nozzle space 15A and a pressurized gas space 15B in a sealed state. However, the inside of the pouring member 15 may be divided into the chemical solution nozzle space 15A and the pressurized gas space 15B by only one of the partition wall 20 and the partition wall 5a, for example, the partition wall 20 of the pouring member 15. .

  The pouring member 15 has the bottom surface 22 as described above, and a plurality of communication holes 22a and 22b are formed in the bottom surface 22, and the communication holes 22a and 22b allow the pressurized gas space 15B of the pouring member 15 and The pressurization space 8 formed between the metal can 2 and the chemical solution storage bag 10 communicates.

  Further, the pouring member 15 has a connection port 15D continuously extending downward from the partition wall 20, and a hermetic seal formed by integrally sealing the inner bag 11 and the outer bag 12 at the lower end of the connection port 15D. A seal fixing portion 25 to which the seal portion 13 is fixed is formed. The seal adhering portion 25 of the dispensing member 15 has a substantially oval shape in plan view, whereby the seal adhering portion 25 and the hermetic seal portion 13 of the drug solution storage bag 10 can be easily fixed.

  As described above, the chemical solution nozzle 16 penetrates into the chemical solution nozzle space 15A of the dispensing member 15, and the pressurized gas is supplied from the pressurized gas supply nozzle 17 into the pressurized gas space 15B.

  As shown in FIGS. 1 to 3, the chemical liquid nozzle 16 extends in the chemical liquid nozzle space 15 </ b> A of the pouring member 15 and is firmly held by the lid 5. The chemical solution nozzle 16 pours out the chemical solution 3 in the chemical solution storage bag 10 and discharges it to the outside. However, the chemical solution storage bag 10 can be used for filling the chemical solution 3.

  Next, the chemical solution nozzle 16 will be further described with reference to FIGS. As shown in FIGS. 6 and 7A, the chemical liquid nozzle 16 includes a nozzle body 26 made of metal, for example, copper, and a synthetic resin inserted into and attached to the lower end of the nozzle body 26, for example, chemical resistance and sliding. And a tip portion (nozzle cap) 27 made of polytetrafluoroethylene (PTFE) having high properties.

  Among these, a plurality of openings 26 a are formed in the lower side wall of the nozzle body 26. The nozzle cap 27 has a cylindrical side wall 27A and a bottom surface 27B, and a plurality of openings 27a are formed on the outer periphery of the cylindrical side wall 27A. Further, a curved surface 27C extending in a circumferential shape is formed between the cylindrical side wall 27A and the bottom surface 27B of the nozzle cap 27.

  Thus, the nozzle cap 27 has the cylindrical side wall 27A, the bottom surface 27B, and the curved surface 27C, and has a curved shape as a whole. The chemical solution nozzle 16 is inserted into the chemical solution storage bag 10, and the chemical solution storage bag 10 is made of a synthetic resin as described later. For this reason, the chemical solution storage bag 10 may be damaged by the lower end of the chemical solution nozzle 16, but according to the present embodiment, the chemical solution nozzle 16 is composed of the nozzle body 26 and the synthesis provided at the lower end of the nozzle body 26. It has a nozzle cap 27 made of resin, for example, PTFE. Since the nozzle cap 27 has a curved shape as a whole and is made of PTFE having high slipperiness, the chemical solution storage bag 10 is not damaged by the lower end of the chemical solution nozzle 16.

  That is, since the nozzle cap 27 is made of PTFE which is superior in sliding property and flexible compared to metal, even if the nozzle cap 27 hits the chemical solution storage bag 10, the chemical solution storage bag 10 is not damaged. Moreover, since the nozzle cap 27 has a curved shape as a whole, it does not have a sharp protrusion, and even if the nozzle cap 27 hits the chemical solution storage bag 10, the chemical solution storage bag 10 is not damaged. Here, “curved shape” refers to a shape that does not include a sharp protrusion.

  Furthermore, the chemical liquid nozzle 16 has a plurality of openings 26 a on the lower side wall of the nozzle body 26 and a plurality of openings 27 a on the cylindrical side wall 27 A of the nozzle cap 27. Therefore, as described later, when the chemical solution 3 in the chemical solution storage bag 10 is discharged using the chemical solution nozzle 16, the chemical solution 3 flows into the chemical solution nozzle 16 from the plurality of openings 26 a and 27 a of the chemical solution nozzle 16. The pressure applied to the outer periphery of the chemical liquid nozzle 16 can be dispersed. Therefore, the chemical solution storage bag 10 is not strongly pressed against a specific part of the chemical solution nozzle 16, and damage to the chemical solution storage bag 10 can be prevented.

  Further, by providing the nozzle cap 27 with a plurality of openings 27a and providing the plurality of openings 26a on the lower side wall of the nozzle body 26, the flexible synthetic resin chemical storage bag 10 can completely open the openings. It is possible to prevent clogging and prevent discharge failure.

  Next, a modified example of the nozzle cap 27 will be described with reference to FIGS. 7B to 7E.

  Although the bottom surface 27B of the nozzle cap 27 is sealed as shown in FIG. 7A, a plurality of openings 27b may be provided in the bottom surface 27B of the nozzle cap 27 as shown in FIG. By providing the opening 27b in the bottom surface 27B in this manner, the chemical solution in the chemical solution storage bag 10 can be reliably discharged by the chemical solution nozzle 16 so that the remaining amount thereof is reduced.

  In the nozzle cap 27 shown in FIG. 7A, the bottom surface 27B of the nozzle cap 27 has a flat shape, but as shown in FIG. 7C, the nozzle cap 27 has a cylindrical side wall 27A having an opening 27a. And a spherical bottom surface 27B. In FIG. 7C, the nozzle body 26 is inserted and attached to a nozzle cap 27.

  Furthermore, as shown in FIG. 7D, the nozzle cap 27 may be formed in a spherical shape as a whole, and an opening 27 a may be formed at the tip of the spherical nozzle cap 27. In FIG. 7D, the nozzle body 26 is inserted and attached to a nozzle cap 27.

  7A to 7D, the chemical solution nozzle 16 has an example including a nozzle body 26 and a nozzle cap 27 as a tip portion inserted and attached to the lower end of the nozzle body 26. However, not limited to this, the nozzle cap 27 and the nozzle body 26 may be integrally formed from the same material (see FIGS. 7E and 7F). That is, the tip portion may be formed integrally with the nozzle body 26. Thus, when the nozzle cap 27 and the nozzle body 26 are integrally formed, the tip of the nozzle body 26 forms the tip 27 without using the nozzle cap 27. In this case, an opening 27a may be provided in the tip portion 27 (see FIG. 7E), or an opening 26a may be provided on the side wall of the nozzle body 26 close to the tip portion 27 (FIG. 7F). reference).

  By the way, as materials of the nozzle cap 27 and the nozzle body 26 which are formed separately in any of FIGS. 7A to 7D, the following materials can be considered.

  First, both the nozzle cap 27 and the nozzle body 26 may be made of metal, for example, copper or stainless steel.

  The nozzle cap 27 is made of synthetic resin such as polytetrafluoroethylene (PTFE), tetrafluoroethylene / perfluoroalkyl vinyl ether copolymer (PFA), tetrafluoroethylene / hexafluoropropylene copolymer (FEP), or high density polyethylene (HDPE). The nozzle body 26 may be made of metal, for example, copper or stainless steel.

  Furthermore, the nozzle cap 27 may be made of metal, for example, copper, and the nozzle body 26 may be made of synthetic resin such as PTFE, PFA, FEP, HDPE.

  Further, both the nozzle cap 27 and the nozzle body 26 may be made of a synthetic resin such as PTFE, PFA, FEP, HDPE.

  On the other hand, as materials of the integrally formed nozzle cap 27 and nozzle body 26 shown in FIGS. 7E and 7F, the following materials are conceivable.

  Both the nozzle cap 27 and the nozzle body 26 may be integrally formed from a metal such as copper, and the nozzle cap 27 and the nozzle body 26 are both integrally formed of a synthetic resin such as PTFE, PFA, FEP, and HDPE. You may shape | mold.

  In each of the embodiments shown in FIGS. 7A to 7F, an opening 27a is provided in the cylindrical side wall 27A of the nozzle cap 27, an opening 27b is provided in the bottom surface 27B of the nozzle cap 27, or the nozzle body. 26, the opening 26a is provided. However, it is not always necessary to provide the opening 27a, the opening 27b, or the opening 26a. Any one of the openings, for example, the opening 27a may be provided, or only the opening 27b may be provided. Alternatively, only the opening 26a may be provided.

The pressurized gas supply nozzle 17 is also firmly held by the lid 5, and an inert gas such as nitrogen gas (N ₂ gas) or air is supplied from the pressurized gas supply nozzle 17 to the pressurized gas of the extraction member 15. The space 15B can be filled. The inert gas or air filled in the pressurized gas space 15B from the pressurized gas supply nozzle 17 is then passed through the communication holes 22a and 22b from the pressurized gas space 15B to the metal can 2 and the chemical solution storage bag 10. It is sent into the pressurizing space 8 between. Then, by supplying an inert gas or air into the pressurizing space 8, the chemical solution storage bag 10 is pressurized from the outside, and the chemical solution 3 in the chemical solution storage bag 10 is discharged outward from the chemical solution nozzle 16. Can do.

  A connector (chemical solution nozzle connector) 16 a is provided at the upper end of the chemical solution nozzle 16 attached to the lid 5, and a connector (pressurized gas supply nozzle connector) is provided at the tip of the pressurized gas supply nozzle 17. ) 17a is provided.

  Note that the above-described dispensing member 15 is made of a synthetic resin as a whole.

  Next, the chemical solution storage bag 10 will be described with reference to FIGS. The inner bag 11 constituting the chemical solution storage bag 10 is obtained by preparing a pair of films made of the inner bag material 11A, and heat-sealing the peripheral edges of the pair of films to form a heat seal portion 11a (see FIG. 5 (a)).

  As the inner bag material 11A, a polyolefin material such as polyethylene (PE) or polypropylene (PP) can be used. Since the inner bag 11 is a part that directly touches the chemical solution 3, the electrolytic solution for the lithium ion battery is disliked. It is preferable to use a material containing as little moisture, halogen, and metal ions as possible, for example, a material having low moisture, low halogen, and low metal ions. In addition, the inner bag material 11A is more preferably an additive-free polyolefin. By using such an additive-free polyolefin, the components in the inner bag material 11A are eluted into the chemical solution 3. Can be prevented.

  Further, the chemical solution 3 is stored in the inner bag 11, but the inner bag 11 inner surface is prevented from being damaged even if pressure is applied to the inner bag 11 inner surface from the chemical solution 3 during transportation. The corner 11b has a curved surface.

  That is, the chemical solution storage bag 10 having the inner bag 11 in which the chemical solution 3 is stored is arranged in the metal can 2 to obtain the chemical solution storage container 1. When the chemical solution storage container 1 is conveyed, It is also conceivable that pressure is applied to the inner surface of the inner bag 11 from the stored chemical solution 3.

  In such a case, when the corner 11b of the inner surface of the inner bag 11 has a polygonal shape, when pressure is applied from the chemical 3 to the inner surface of the inner bag 11, local stress is applied to the polygonal corner 11b. It is also conceivable that the inner bag 11 is broken near the corner 11b.

  On the other hand, according to the present invention, the corner 11b of the inner surface of the inner bag 11 is formed of a curved surface. Therefore, even if pressure is applied from the chemical solution 3 to the inner surface of the inner bag 11 during conveyance, the corner formed of the curved surface. The local stress is not generated in the portion 11b, and damage to the inner bag 11 in the vicinity of the corner portion 11b can be prevented.

  The corner portion 11b of the inner bag 11 having such a curved surface can be obtained by forming the heat seal portion 11a so that the corner portion 11b has a curved surface when the inner bag 11 is manufactured.

  Next, the outer bag 12 will be further described. The outer bag 12 surrounds the inner bag 11 from the outside and is disposed in the metal can 2, protects the inner bag 11 from the outside, and the impact from the metal can 2 is directly applied to the inner bag 11. It functions so as not to be transmitted.

  Therefore, as the outer bag material 12A for producing the outer bag 12, a polyolefin layer such as PE and PP, a polyethylene terephthalate (PET) layer, or a nylon (Ny) layer sequentially arranged from the inside to the outside is used. The laminated body containing is used (refer FIG.5 (b)).

  Among these, polyolefin layers such as PE and PP function as a heat seal layer, and the PET layer or Ny layer has impact resistance and gas barrier properties.

  Thus, the material 12A for the outer bag 12 has an excellent impact resistance and gas barrier property as a whole compared with the material 11A for the inner bag 11, while the material 11A for the inner bag 11 is used for the outer bag 12. Compared to the material 12A, it is made of a material having a low water content, a low halogen content, and a low metal ion.

  By the way, the outer bag 12 prepares a surface (front side in FIG. 4 paper) film and a back surface (back side in FIG. 4) film made of the material 12A for the outer bag 12, and heat seals these peripheral edges to heat seal part 12a. Is obtained.

  In particular, at the bottom of the chemical solution storage bag 10, the heat seal portion 11 a of the inner bag 11 and the heat seal portion 12 a of the outer bag 12 are integrally formed.

  By the way, as will be described later, dew point management is performed in which dry air is supplied and replaced in the chemical solution storage container 1 so as to lower the dew point in the chemical solution storage container 1 to a range of −50 ° C. to −70 ° C.

  Here, as the dry air supplied into the chemical solution storage container 1, dry air having a dew point temperature of −50 ° C. to −70 ° C. is used.

  By the way, the chemical liquid nozzle 16 attached to the lid 5 is also used as a nozzle for supplying dry air into the chemical liquid storage bag 10.

  As described above, the chemical liquid nozzle 16 is connected to the connector (chemical liquid nozzle connector) 16 a, and the dry air is supplied from the external dry air supply source 30 connected to the connector 16 a via the chemical liquid nozzle 16. Are supplied into the chemical solution storage bag 10 through the openings 26a, 27a, 27b (see FIG. 8).

  The dry air supplied into the chemical solution storage bag 10 enters the first dry air discharge opening 18 from the chemical solution nozzle space 15A, and then is discharged outward from the connectors (first dry air discharge opening connectors) 18a and 18c. .

  Also, dry air can be supplied from an external dry air supply source 30 to a connector (pressurized gas supply nozzle connector) 17 a at the tip of the pressurized gas supply nozzle 17. In this case, dry air is supplied into the pressurized gas space 15B from the dry air supply source 30 connected to the connector 17a via the pressurized gas supply nozzle 17. Then, the dry air supplied into the pressurized gas space 15 </ b> B is sent into the pressurized space 8 between the metal can 2 and the chemical solution storage bag 10 through the communication holes 22 a and 22 b of the extraction member 15.

By the way, a plurality of communication holes 22a and 22b are provided on the bottom surface 22 of the dispensing member 15, and the communication hole 22a has a relatively large opening, and the communication hole 22b has a relatively small opening.

  The lid 5 is provided with a second dry air discharge opening 19 for discharging dry air from the pressurized gas space 15B. The second dry air discharge opening 19 has connectors (second dry air discharge opening connectors) 19a and 19c. It is connected. The dry air sent from the pressurized gas space 15B into the pressurized space 8 between the metal can 2 and the chemical solution storage bag 10 through the communication holes 22a and 22b mainly passes through the communication holes 22a and 22b. Then, the air is discharged from the connectors 19 a and 19 c through the dry air discharge opening 19.

  Next, the dry air supply line and the discharge line will be further described with reference to FIGS. As shown in FIGS. 8 and 9, dry air is supplied to the chemical nozzle connector 16a and a first supply line 31 having a valve 31a is connected, and dry air is supplied to the pressurized gas supply nozzle connector 17a. In addition, a second supply line 32 having a valve 32 a is connected, and the first supply line 31 and the second supply line 32 are joined to the joining supply line 33 via a three-way joint 38. In addition, three-way joints 42 and 41 are interposed in the merge supply line 33, and the dry air supply source 30 is connected to the merge supply line 33.

  As shown in FIG. 8, the first supply line 31 connected to the connector 16a and the second supply line 32 connected to the connector 17a are connected to the merging supply line 33 via a three-way joint 38. Since the supply line 33 is connected to the dry air supply source 30, the chemical solution storage bag 10 is supplied from the dry air supply source 30 through the connector 16 a and the chemical solution nozzle 16 using supply lines 31, 32, 33 having a very simple structure. Dry air can be supplied inside. Further, dry air can be supplied to the pressurized gas space 15B through the connector 17a and the pressurized gas supply nozzle 17.

  Next, the connection structure of the dew point meter 40 will be described. As shown in FIGS. 8 and 9, a dew point meter connecting portion 41 a and a dew point meter connecting portion 42 a are provided in each of the three-way joints 41 and 42 interposed in the merging supply line.

  Next, the connection structure of the dew point meter 40 will be described with reference to FIG. As shown in FIG. 9, the dew point meter 40 is connected to the upper end of the three-way joint 43, and the dew point meter connecting portion 43 c is connected to the lower end of the three-way joint 43.

  A discharge pipe 43 a having a valve 43 b is attached to the side of the three-way joint 43.

  8 and 9, one of the connectors 18c and 19c is removed from the corresponding connector 18a and 19a, and then the dew point meter 40 is a connector from which the connectors 18c and 19c are removed via the dew point meter connecting portion 43c. 18a and 19a are detachable.

  Similarly, the dew point meter 40 can be detachably attached to any one of the dew point meter connecting portions 41a and 42a provided in the junction supply line 33 via the dew point meter connecting portion 43c.

  As shown in FIGS. 8 and 9, the dew point meter 40 is detachably attached to any of the dew point meter connecting portions 41a, 42a, the connector 18a, and the connector 19a of the confluence supply line 33 via the dew point meter connecting portion 43c. Since it can be attached, a single dew point meter 40 can be used to easily measure the dew point of the dry air at an arbitrary location among the merging supply line 33, the first dry air discharge opening 18, and the second dry air discharge opening 19.

  Next, the operation of the present embodiment having such a configuration will be described.

  First, the manufacturing method of the chemical solution storage container 1 will be described.

  As shown in FIG. 4, the film of the outer bag 12 is arranged on the front side (front side of FIG. 4) and the back side (back side of FIG. 4) of the inner bag 11 to Perform heat sealing.

  Next, the extraction member 15 is inserted into the inner bag 11 from the upper opening of the inner bag 11.

  Thereafter, the upper opening of the inner bag 11 and the upper opening of the outer bag 12 are aligned and heat sealed together. As a result, the upper opening of the inner bag 11 and the upper opening of the outer bag 12 are integrally sealed to form the hermetic seal portion 13. At the same time, the seal fixing portion 25 of the pouring member 15 is also heat-sealed integrally with the inner bag 11 and the outer bag 12, and the pouring member 15 is fixed to the inner bag 11 and the outer bag 12 by the hermetic seal portion 13 (FIG. 4). reference).

  Next, the bottoms of the inner bag 11 and the outer bag 12 are integrally heat-sealed.

  Thus, the chemical | medical solution storage bag 10 which has the inner bag 11 and the outer bag 12 and to which the pouring member 15 was attached is obtained. On the other hand, the lid 5 to which the chemical liquid nozzle 16, the pressurized gas supply nozzle 17, and the connectors 16a, 17a, 18a, and 19a are attached is prepared in advance. Next, the chemical solution nozzle 16 is inserted into the chemical solution nozzle space 15A formed by the partition wall 20 of the dispensing member 15, and the pressurized gas supply nozzle 17 is inserted into the pressurized gas space 15B. 10, the lid 5, and the dispensing member 15 are combined together.

  Next, the chemical solution storage bag 10 is inserted into the outer container (metal can) 2 from the upper opening 2 a, and the dispensing member 15 is fitted into the upper opening 2 a of the metal can 2. In this case, the side surface 23 of the pouring member 15 is fitted into the upper opening 2 a of the metal can 2, and the lid 5 is bolted to the periphery of the upper opening 2 a of the metal can 2 by the bolt 6 provided on the periphery thereof. . The pressurized gas supply nozzle 17 attached to the lid 5 extends into the pressurized gas space 15 </ b> B of the extraction member 15.

  Next, the chemical solution storage container 1 is subjected to dry air replacement.

  First, the connector 16a of the chemical liquid nozzle 16 which is the dry air supply opening and the connector 17a of the pressurized gas supply nozzle 17 are connected to the merging supply line 33 via the first supply line 31 and the second supply line 32. A supply line 33 is connected to the dry air supply source 30. The corresponding connector 18c and connector 19c are connected to the connector 18a and the connector 19a of the dry air discharge opening 19, respectively. Next, dry air is supplied from the dry air supply source 30 through the merge supply line 33, the first supply line 31, the connector 16 a and the chemical liquid nozzle 16. The supplied dry air is supplied into the chemical solution storage bag 10, and the air in the chemical solution storage bag 10 is replaced with dry air. At the same time, the chemical storage bag 10 is expanded in the outer container 2 by this dry air.

  Next, the dry air in the chemical solution storage bag 10 passes through the first dry air discharge opening 18 and is discharged outward from the connectors 18a and 18c via the connectors 18a and 18c.

  Similarly, dry air is supplied from the dry air supply source 30 into the pressurized gas space 15B via the merge supply line 33, the second supply line 32, the connector 17a, and the pressurized gas supply nozzle 17. The dry air supplied into the pressurized gas space 15B is supplied into the pressurized space 8 between the metal can 2 and the chemical solution storage bag 10 mainly through the communication holes 22a and 22b. The dry air supplied into the pressurized space 8 is replaced with the air in the pressurized space 8.

  Next, the dry air in the pressurization space 8 is mainly returned to the pressurization gas space 15B through the communication hole 22b, and then passes through the second dry air discharge opening 19 and through the connectors 19a and 19c. Is discharged to the outside.

  In this manner, the dew point in the chemical solution storage bag 10 and in the pressurized space 8 between the metal can 2 and the chemical solution storage bag 10 is reduced to about −50 ° C. to −70 ° C., and appropriate dew point management is performed. be able to.

  Thus, by reducing the dew point in the chemical solution storage bag 10 and the pressurized space 8, even the chemical solution 3 that is sensitive to moisture can be stored in the chemical solution storage container 10 without any problem.

  Thereafter, the connector 17c is removed from the connector 17a, the second supply line 32 is removed, the connection between the connector 17a and the external dry air supply source 30 is released, the connector 19c is removed from the connector 19a, and the connector 19a is closed. Further, the connector 16c is removed from the connector 16a, the first supply line 31 is removed, the connector 18c is removed from the connector 18a, and the connector 18a is closed.

  When the chemical solution 3 is stored in the chemical solution storage bag 10, the connector 16 a of the chemical solution nozzle 16 is connected to an external supply mechanism (not shown), and the chemical solution 3 is supplied from the supply mechanism into the inner bag 11.

  Next, the connector 16a of the chemical solution nozzle 16 is sealed by a lid (not shown), and the other connectors 17a, 18a, 19a are similarly sealed by the lid. Next, the chemical solution storage container 10 having the chemical solution storage bag 10 having the inner bag 11 and the outer bag 12 and the metal can 2 is transported to the destination. Thereafter, the lid is removed from the connector 16a of the chemical liquid nozzle 16 at the transport destination, and the connector 16a of the chemical liquid nozzle 16 is connected to a discharge mechanism (not shown).

Next, the lid is removed from the connector 17 a of the pressurized gas supply nozzle 17, and this connector 17 a is connected to an N ₂ gas or air supply mechanism (not shown) and poured out from the pressurized gas supply nozzle 17. N ₂ gas or air is supplied into the pressurized gas space 15 B of the member 15. The gas in the pressurized gas space 15B is sent from the communication hole 22a of the dispensing member 15 into the pressurized space 8 between the metal can 2 and the chemical solution storage bag 10, and pressurizes the chemical solution storage bag 10 from the outside. . Thus, the chemical liquid 3 stored in the inner bag 11 of the chemical liquid storage bag 10 can be discharged from the chemical liquid nozzle 16 to the discharge mechanism side. During this time, the supply amount of N ₂ gas can be adjusted while observing the pressure of the N ₂ gas as shown in the pressure gauge.

  As described above, according to the present embodiment, the chemical solution nozzle 16 includes the nozzle body 26 and the nozzle cap 27 provided at the lower end of the nozzle body 26. Since the nozzle cap 27 has a curved shape as a whole, the chemical solution storage bag 10 is not damaged by the lower end of the chemical solution nozzle 16. Further, when the nozzle cap 27 is made of PTFE having high slipperiness, the chemical solution storage bag 10 can be more reliably prevented from being damaged. Furthermore, the chemical solution nozzle 16 has a plurality of openings 26 a on the lower side wall of the nozzle body 26, a plurality of openings 27 a on the cylindrical side wall 27 A of the nozzle cap 27, or a plurality of openings 27 B on the bottom surface 27 B of the nozzle cap 27. An opening 27b is provided.

Therefore, when the chemical liquid 3 is discharged using the chemical liquid nozzle 16, the chemical liquid 3 can flow into the chemical liquid nozzle 16 from any of the plurality of openings 26a, 27a, 27b of the chemical liquid nozzle 16, The pressure applied to the outer periphery of the nozzle 16 can be dispersed. Therefore, the chemical solution storage bag 10 is not strongly pressed against a specific part of the chemical solution nozzle 16, and damage to the chemical solution storage bag 10 can be prevented. Further, according to the present embodiment, it is possible to easily measure the dew point of the dry air at an arbitrary location in the merging supply line 33, the first dry air discharge opening 18 and the second dry air discharge opening 19 using the single dew point meter 40. Can do. Before supplying the chemical solution into the chemical solution storage bag 10, the inside of the chemical solution storage bag 10 and the pressurized space 8 between the metal can 2 and the chemical solution storage bag 10 are replaced with dry air. In addition, dew point management for reducing the dew point in the pressurized space 8 to -50 ° C to -70 ° C can be performed. For this reason, even if it is the chemical | medical solution 3 weak to moisture, it can be accommodated and used in the chemical | medical solution storage bag 10 without a problem.

  Further, a chemical solution storage container 1 for storing a chemical solution includes a metal can 2, a chemical solution storage bag 10 that is disposed in the metal can 2, an inner bag 11 that stores the chemical solution 3, and an outer bag 12 that surrounds the inner bag 11, and a chemical solution And a pouring member 15 attached to the storage bag 10. For this reason, it is not necessary to wash | clean the metal can 2 frequently compared with the apparatus which stores the chemical | medical solution 3 directly in the metal can 2, and can reduce expensive washing | cleaning cost.

  Furthermore, a lid 5 that covers the pouring member 15 and seals the upper opening 2a of the metal can 2 is provided. The lid 5 has a chemical solution nozzle 16 that penetrates the pouring member 15 and a pressurized gas supply. A nozzle 17 is attached in advance. For this reason, the pouring member 15 is attached to the chemical solution storage bag 10 in advance, and then the chemical solution nozzle 16 is passed through the pouring member 15.

  Then, the chemical solution nozzle 16 and the pressurized gas supply nozzle 17 can be easily and simply installed by simply fitting and fixing the lid 5 into the upper opening 2 a of the metal can 2.

  Furthermore, since the material 11A of the inner bag 11 is made of a material having a low moisture content, a low halogen content, and a low ion content, the chemical solution 3 stored in the inner bag 11 is deteriorated or adversely affected by the inner bag 11. There is nothing.

  Furthermore, since the material 12A of the outer bag 12 is excellent in impact resistance and gas barrier properties, the inner bag 11 is protected from the outside so that the impact from the metal can 2 is not transmitted to the inner bag 11 during transportation. In addition, it is possible to prevent an external atmosphere from entering the side of the drug solution 3 in the inner bag 11.

<Modification of the present embodiment>
Next, modifications of the present embodiment will be described below.
In the above embodiment, the lid 5 is provided on the outer container 2 and the chemical liquid nozzle 16 is held by the lid 5. However, the chemical liquid nozzle 16 is connected to the chemical liquid via the dispensing member 15. As long as it is inserted into the storage inner bag 10, it is not necessarily held by the lid 5.

  For example, the chemical solution nozzle 16 may be fixedly held by the dispensing member 15. Then, by fixing the pouring member 15 to the outer container 2, both the pouring member 15 and the chemical solution nozzle 16 can be fixed to the outer container 2.

DESCRIPTION OF SYMBOLS 1 Chemical solution container 2 Metal can 2a Upper opening 3 Chemical solution 5 Lid body 6 Bolt 8 Pressurization space 10 Chemical solution storage bag 11 Inner bag 11a Heat seal part 11b Corner part 12 Outer bag 12a Heat seal part 13 Sealing seal part 15 Outlet member 15A Chemical solution nozzle space 15B Pressurized gas space 15D Connection port 16 Chemical solution nozzle 16a Connector 17 Pressurized gas supply nozzle 17a Connector 18 First dry air discharge opening 18a Connector 19 Second dry air discharge opening 19a Connector 20 Cylindrical partition wall 22 Bottom surface 22a, 22b Communication hole 25 Seal fixing portion 26 Nozzle body 26a Opening 27 Nozzle cap 27a Additional opening 27A Cylindrical side wall 27B Bottom surface 27C Curved surface 30 Dry air supply source 31 First supply line 32 Second supply line 33 Merged supply line 35 First 1 discharge line 36 2nd discharge line 4 0 Dew point meter 41 Dew point meter connection part 42 Dew point meter connection part 43 Dew point meter connection part 44 Dew point meter connection part

Claims (22)

An outer container having an upper opening;
A chemical storage container including a chemical solution storage bag that is disposed in the outer container and is provided with a pouring member at an upper end portion and stores a chemical solution therein,
The pouring member is disposed in the upper opening of the outer container;
A lid for sealing the upper opening of the outer container is provided to cover the pouring member;
The lid body is provided with a chemical solution nozzle that passes through the extraction member and discharges the chemical solution, and a pressurized gas supply nozzle that supplies pressurized gas into the extraction member,
The chemical solution nozzle has a nozzle body and a tip portion disposed at the lower end of the nozzle body,
The tip has a curved surface not including a protrusion, and the tip is separated from the bottom of the drug solution storage bag,
A plurality of openings having different circumferential positions are provided in at least one of the cylindrical side wall portion of the tip portion and the side wall of the nozzle body, and the curved surface is provided on the tip end side of the nozzle from the opening , Furthermore , the chemical | medical solution storage container characterized by the opening being provided also in the side spaced apart from the said front-end | tip of the said nozzle of these openings from which the position of the circumferential direction differs .   2. The chemical solution storage container according to claim 1, wherein the nozzle body includes a metal and the tip includes a synthetic resin.   The chemical solution storage container according to claim 1, wherein the nozzle body and the tip end portion include metal.   The chemical solution storage container according to claim 1, wherein the nozzle body and the tip end portion include a synthetic resin.   The chemical solution storage container according to claim 1, wherein the nozzle body includes a synthetic resin and the tip includes a metal.   The chemical solution storage container according to claim 2, wherein the tip portion is made of a PTFE material.   The chemical container according to claim 1, wherein an opening is formed at the tip.   The chemical solution storage container according to claim 1, wherein a plurality of openings are formed in a side wall of the nozzle body of the chemical solution nozzle. The inside of the dispensing member is partitioned into a chemical solution nozzle space that passes through the chemical solution storage bag and a pressurized gas space that is filled with pressurized gas. In addition, a communication hole that connects the pressurized space between the outer container and the chemical solution storage bag and the pressurized gas space is formed,
A chemical liquid nozzle connector connected to the chemical liquid nozzle on the lid; a first dry air discharge opening connector communicating with the chemical liquid nozzle space; a pressurized gas supply nozzle connector communicating with the pressurized gas space; A second dry air discharge opening connector is formed,
2. The chemical solution storage container according to claim 1, wherein the chemical solution nozzle connector and the pressurized gas supply nozzle connector can each be connected to a dry air supply source via a supply line.   10. The chemical solution storage according to claim 9, wherein each supply line, the first dry air discharge opening connector, and the second dry air discharge opening connector are connectable to a dew point meter connecting portion for connecting a dew point meter. container. An outer container having an upper opening;
A chemical storage container including a chemical solution storage bag that is disposed in the outer container and is provided with a pouring member at an upper end portion and stores a chemical solution therein,
The pouring member is disposed in the upper opening of the outer container, and a chemical liquid nozzle for discharging the chemical liquid is inserted into the pouring member. The chemical liquid nozzle includes a nozzle body and a lower end of the nozzle body. And a tip portion arranged in the
The tip has a curved surface not including a protrusion, and the tip is separated from the bottom of the drug solution storage bag,
A plurality of openings having different circumferential positions are provided in at least one of the cylindrical side wall portion of the tip portion and the side wall of the nozzle body, and the curved surface is provided on the tip end side of the nozzle from the opening , Furthermore , the chemical | medical solution storage container characterized by the opening being provided also in the side spaced apart from the said front-end | tip of the said nozzle of these openings from which the position of the circumferential direction differs .   The chemical solution storage container according to claim 11, wherein the nozzle body includes a metal, and the tip includes a synthetic resin.   The chemical solution storage container according to claim 11, wherein the nozzle body and the tip end portion include metal.   12. The chemical solution storage container according to claim 11, wherein the nozzle body and the tip end portion include a synthetic resin.   The chemical solution container according to claim 11, wherein the nozzle body includes a synthetic resin, and the tip includes a metal.   The chemical solution storage container according to claim 12 or 14, wherein the tip portion is made of PTFE material.   The chemical solution storage container according to claim 11, wherein an opening is formed in the tip portion.   The chemical solution storage container according to claim 11, wherein a plurality of openings are formed in a side wall of the nozzle body of the chemical solution nozzle.   A communication hole communicating with the pressurized air between the outer container and the chemical solution storage bag is provided in the dispensing member, and a pressurized gas supply nozzle is communicated with the communication hole. Item 11. A chemical container according to Item 11.   The chemical solution container according to claim 1 or 11, wherein the tip portion is formed integrally with the nozzle body. It is a liquid filling method using the chemical | medical solution storage container of Claim 1 or 11, Comprising: The gas is supplied into the said chemical | medical solution storage bag from the said pouring member of the said chemical | medical solution storage container through the said nozzle for chemical | medical solutions, Inflating the medicinal solution storage bag in the outer container;
Filling the liquid into the chemical solution storage bag from the pouring member via the chemical solution nozzle; and a liquid filling method comprising: A method for dispensing a liquid using the chemical container according to claim 1 or 11,
Filling the chemical solution storage bag of the chemical solution storage container with a liquid;
A method for discharging a liquid, comprising a step of discharging the liquid filled in the chemical solution storage bag from the dispensing member via the chemical solution nozzle.

Images