Immersion nozzle and liquid container using same

Abstract

The invention provides a submerged nozzle which can almost discharge contained liquid without loss, and does not discharge residual liquid at the time of opening and pressurizing. The immersion nozzle (10) is a tubular immersion nozzle (10) which is inserted into a liquid container main body (30) in the vertical direction so as to feed liquid (50) contained in the liquid container main body (30) of a sealable liquid container (100) having a curved surface (33) and / or an inclined surface recessed toward the outside at the bottom (32), and is characterized by comprising: an upper end-side thick-diameter pipe section (12) which is provided with a lower end-side thick-diameter pipe section (13) which is provided with a lower end-side thick-diameter pipe section (14); the abutting parts (11) and (15) are buckled on the inner side of the opening part (39) and / or the head part (38) of the liquid container body (30); an upper neck pipe part (13) which is connected with the upper end side large-diameter pipe part (12) and has the same diameter with the upper end side large-diameter pipe part (12) until the diameter is reduced; and a small-diameter pipe section (14) which is connected to the upper neck pipe section (13), which extends to a lower end (19) while reducing in diameter through a tapered surface (18), and through which a pressurizing hole (17) penetrates in the horizontal direction.

Description

TECHNICAL FIELD

[0001] The present application relates to a dip nozzle for a liquid container for containing and, if necessary, pressurizing and discharging a liquid to be delivered; and a liquid container body for containing a liquid in the liquid container and delivering the liquid from the liquid container body. BACKGROUND

[0002] Industrial high-purity chemicals such as photoresists or solvents used in the semiconductor and liquid crystal fields, medical high-purity chemicals, and food material liquids must be stored and transported in high purity without mixing foreign matter and used. Therefore, such liquids, when contained in a liquid container, are stored and transported, and as much as possible, without contacting the outside, directly set to a liquid delivery device to be used. At the time of liquid delivery, a gas is flowed into the liquid container, and the liquid is discharged from a discharge pipe at the pressure to be delivered to the next step.

[0003] Patent Document 1 discloses a connection tool that is a connector that is provided with a plug that is attached to an opening portion of a container that stores a liquid, a sleeve that is connected to the plug, and a siphon (liquid delivery pipe) that extends downward from a lower portion of the cap body, and the lower end portion is disposed near the bottom of the container when the cap body is attached to the opening portion, and the siphon is formed of a pipe body that is integrally formed with the cap body. The inert gas is flowed from the plug, and the stored liquid is discharged from the siphon at the pressure to be delivered.

[0004] In recent years, a liquid container in which a liquid delivery pipe and an inert gas supply port from a pressurizing source are integrated and simplified is known.

[0005] For example, Patent Document 2 discloses a liquid feeding device that is a liquid feeding device that is provided with a liquid container in a substantially cylindrical body portion, feeds liquid in the liquid container, and has the liquid container including a container body that is formed with a discharge port (liquid feeding port) concentric with the body portion at a circular bottom and a top portion, can accommodate liquid, and can attach and detach the discharge port; and a support table made of resin that supports the container body by itself and is fitted to the circular bottom side of the body portion. The liquid feeding device has a seat that places the liquid container, has a protruding portion that is fitted into the through portion of the support table and abuts against the circular bottom of the container body; a liquid feeding adapter that has a gas supply port that is connected to a pressure source and supplies gas into the container body, and a liquid feeding tube that is positioned so that the distal end is close to the bottommost portion of the circular bottom in the container body and the lower end is guided to the outside of the container body, can be attached to and detached from the discharge port instead of the plug, and can seal the container body; and a pushing member that is movably provided to a support that stands from the seat, can fix the liquid feeding adapter in a position where the upper portion of the liquid feeding adapter is abutted against the discharge port.

[0006] As a further simplification, Patent Document 3 discloses a plug configuration that is a container in which a cap mounting thread for a container inlet is an external thread, and has a siphon (liquid feeding tube) that is mounted to the container inlet and is used to take out liquid in the container, a lower portion of a plug body that is pressed into the container inlet is elastically deformable in the radial direction, and a locking claw that protrudes toward an inner wall surface of the container inlet is provided on an outer peripheral surface of the lower portion of the plug body. In Patent Document 3, a gas flow path that supplies gas introduced from the outside into the container is illustrated downward.

[0007] However, if the gas flow path that supplies gas from the outside into the container is downward, as a result of gas that is discharged to take out liquid flowing toward the lower end of the siphon, the liquid is pushed away from the lower end of the siphon so that the valuable and expensive liquid is unexpectedly not fed and remains. Furthermore, in the case where liquid is not completely fed and feeding is stopped / terminated halfway, the connection tool is usually detached after the pressure inside is released to normal pressure, but in the case where the connection tool is detached in a state where residual pressure remains in the container due to a failure of a release valve, or an abnormal situation such as a human error, there is a risk that the remaining liquid is ejected from the gas flow path, and there are problems such as loss of expensive liquid, contamination of the surrounding environment by scattered liquid.

Prior Art Documents

Patent Documents

[0008]

Patent Document 1

Patent Document 2

[0009] PROBLEMS TO BE SOLVED BY THE INVENTION The present invention has been achieved in order to solve the problems described above, and has an object to provide an immersion nozzle capable of discharging almost all of the liquid contained therein without loss and supplying the liquid without spouting the residual liquid at all when opened under pressure, and a liquid container using the same.

[0010] MEANS FOR SOLVING THE PROBLEMS The immersion nozzle achieved in order to achieve the object described above is a tubular immersion nozzle inserted in a vertical direction (directly downward direction) into a liquid container body to supply liquid contained in the liquid container body of a liquid container having a curved surface and / or inclined surface recessed toward the outside of the ambient at the bottom and capable of being closed, characterized by having: an upper end side large diameter pipe portion having a stopper portion to be latched to the inside of a mouth portion and / or head portion of the liquid container body; an upper neck pipe portion connected to the upper end side large diameter pipe portion and having the same diameter to a reduced diameter; and a small diameter pipe portion connected to the upper neck pipe portion and reduced in diameter through a tapered surface and extending to a lower end, a pressurization hole being penetrated through the upper neck pipe portion toward the horizontal direction.

[0011] The immersion nozzle preferably has a mallet portion as the stopper portion on the outer periphery of the upper end side large diameter pipe portion, and / or has an external screw thread as the stopper portion to be screwed with the inside of the mouth portion and / or the head portion.

[0012] In the immersion nozzle, the external screw thread can be a reverse screw thread or a forward screw thread opposite to a forward screw thread to be screwed with the mouth portion and / or the head portion to be filled with a lid.

[0013] The liquid container achieved in order to achieve the object described above is a liquid container having a curved surface and / or inclined surface recessed toward the outside of the ambient at the bottom and capable of containing liquid by being closed and capable of discharging liquid to supply the liquid, characterized by having a tubular immersion nozzle inserted in a vertical direction to the curved surface and / or inclined surface of the inner surface of a liquid container body of the liquid container and having: an upper end side large diameter pipe portion having a stopper portion to be latched to the inside of a mouth portion and / or head portion of the liquid container body; an upper neck pipe portion connected to the upper end side large diameter pipe portion and having the same diameter to a reduced diameter; and a small diameter pipe portion connected to the upper neck pipe portion and reduced in diameter through a tapered surface and extending to a lower end, a pressurization hole being penetrated through the upper neck pipe portion toward the horizontal direction, and a detachable lid to be closed and contain the liquid in the mouth portion and / or the head portion.

[0014] The liquid container can also be a cylindrical stand having a claw at an upper end, the claw being engaged with a groove provided continuously or discontinuously around the outside of the liquid container body.

[0015] The liquid container can also be a liquid container having a handle spanning the mouth and / or the head at the shoulder of the liquid container body and / or a recessed handle recessed in the trunk of the liquid container body.

[0016]

Effects of the Invention

[0017] With the liquid container using the immersion nozzle of the present application, by covering with the cap, a liquid such as an industrial high-purity liquid, a medical high-purity liquid, and a food material liquid can be stably stored for a long time without contacting the outside.

[0018] Further, with the liquid container using the immersion nozzle, a liquid delivery inner tube which is inserted into an upper neck pipe portion and is locked to a conical surface to be liquid-tight and gas-tight, a pressurizing outer tube which is inserted into an opening of the upper neck pipe portion to be gas-tight and surrounds the liquid delivery inner tube and pressurizes a pressurizing hole, and a connector which holds the liquid delivery inner tube and the pressurizing outer tube and is detachable can be interchangeably provided instead of the cap. Thus, a gas such as inert gas for pressurization does not push the liquid flowing toward the lower end of the immersion nozzle away from the lower end of the immersion nozzle in a manner that the valuable and expensive liquid is unexpectedly not delivered and remains. BRIEF DESCRIPTION OF DRAWINGS

[0019]

Figure 1

Figure 2

Figure 3

Figure 4

[0020] The embodiments of the present application are described in detail below, but the scope of the present application is not limited to these embodiments.

[0021] First, the immersion nozzle 10 according to the present application is described in detail.

[0022] The immersion nozzle 10 is used in the liquid container 100 of the present invention, as shown in the exploded view of a partial notch during the assembly of the liquid container 100, which is shown with the liquid container body 30 inserted into the immersion nozzle 10 and closed with the cap 20. Figure 1 ; and as an assembly diagram showing a partial notch in the assembled liquid container 100. Figure 2 The explanation is as follows.

[0023] The immersion nozzle 10 has: an upper end coarse diameter tube portion 12; an upper neck tube portion 13 connected below it; and a fine diameter tube portion 14 connected below it through a tapered surface 18.

[0024] The immersion nozzle 10 is inserted into the liquid container body 30 for use.

[0025] The liquid container body 30 is constructed by covering the container body 30' with the bottom 32 and top surface 32', thus ensuring that valuable and expensive liquids to be contained are not overlooked, such as high-purity industrial pharmaceutical solutions (e.g., photoresists or solvents used in the semiconductor and liquid crystal fields), high-purity medical pharmaceutical solutions, and food material liquids, all sealed in a sealed manner. The bottom 32 has a curved surface 33 that slopes towards the center and is recessed further outward, thereby concentrating residual liquid 50' in the center (see reference). Figure 3 (ii)).

[0026] The immersion nozzle 10, as long as it can discharge the liquid 50 contained in the liquid container body 30 with as little residue as possible, may not have a gap between the curved surface 33 on the inner surface of the liquid container body 30 and the lower end 19 of the immersion nozzle 10, but may at least have a small gap in some areas. The lower end 19 of the immersion nozzle 10 may be flat, but may also be machined into a tapered beveled shape, or may have a semi-circular notch shape. The immersion nozzle 10 is inserted in a direction perpendicular to the curved surface 33 on the inner surface of the liquid container body 30 of the liquid container 100.

[0027] The upper end of the immersion nozzle 10 has a stop portion for engaging with the inside of the opening 39 and / or head 38 of the liquid container body 30. Specifically, the stop part is a stop part provided on the outer periphery of the upper end of the upper end of the large diameter tube portion 12, which can be attached to the opening 39 of the liquid container body 30. An example is the edge portion 11 which has a larger diameter than the opening 39 of the liquid container body 30. As the stopper, instead of the anvil 11, or in addition to the anvil 11, an external thread 15 that is screwed with an internal thread 36 provided on the inner side of the mouth 39 and / or the head 38 of the liquid container body 30 can be provided on the outer periphery of the upper end side large diameter pipe portion 12. By screwing the external thread 15 with the internal thread 36 on the inner side of the mouth 39 and / or the head 38 of the liquid container body 30, it is possible to prevent the immersion nozzle 10 from being unable to maintain the air-tightness / liquid-tightness due to loosening, deviation, or tilting, and the like.

[0028] The upper neck pipe portion 13 of the immersion nozzle 10 is connected to the upper end side large diameter pipe portion 12 and has the same diameter as the upper end side large diameter pipe portion 12, and extends further downward than the upper end side large diameter pipe portion 12.

[0029] The small diameter pipe portion 14 of the immersion nozzle 10 is connected to the upper neck pipe portion 13, has a reduced diameter by the tapered surface 18 connected to the upper neck pipe portion 13, and extends to the lower end 19.

[0030] In the upper neck pipe portion 13, near the upper end side large diameter pipe portion 12, a single or a plurality of pressurization holes 17 are provided so as to penetrate in the horizontal direction. The shape of the pressurization hole 17 is not particularly limited, and can be a cylindrical hollow shape, an elliptical cylindrical hollow shape, a polygonal cylindrical hollow shape such as a quadrangular hollow shape, or a circular truncated cone hollow shape that expands or narrows toward the inner space side of the liquid container body 30, but from the viewpoint of easy molding and the viewpoint of preventing clogging, a cylindrical hollow shape is preferable.

[0031] The pressurization hole 17 can be substantially in the horizontal direction, and the inclination angle or the depression angle as viewed from the horizontal direction can be up to 10° including the tolerance.

[0032] The diameter of the pressurization hole 17 is not particularly limited, and considering that it is open to the upper end side large diameter pipe portion 12, it is preferably , more preferably , and even more preferably or less.

[0033] With the pressurization hole 17, the gas such as inert gas that is used to pressurize the liquid 50 that is being discharged at the initial stage and the final stage of the liquid delivery flows in the substantially horizontal direction through the pressurization hole 17 (refer to the thick arrow in Figure 3 . Therefore, as a result of the flow of the inert gas along the inner wall of the liquid container body 30, as a result of reaching the lower end 19 of the immersion nozzle 10, and particularly at the final stage of the liquid delivery, the residual liquid 50' is pushed close to the lower end 19 of the immersion nozzle 10, and substantially complete delivery of the liquid 50 from the immersion nozzle 10 without loss is achieved (refer to Figure 3(ii). Assuming that the pressurizing hole is directed downward as in the past, since the gas for pressurization flows toward the lower end 19 of the immersion nozzle 10, particularly at the final disk of the liquid delivery, the valuable and expensive residual liquid 50' will be pushed and remain in a manner of being distanced from the lower end 19 of the immersion nozzle 10 (refer to Figure 3 (i), the effect of the pressurizing hole 17 being directed horizontally is remarkable.

[0034] Further, in the case where the liquid delivery is stopped / paused halfway without completing the liquid delivery, since the abnormal situation of the malfunction of the release valve, or the human error operation, etc. occurs, the disconnection of the connecting means is performed in the state where the residual pressure remains in the inside of the container, there is no risk of the liquid remaining being ejected from the gas flow path, and it is quite economical without the loss of the expensive liquid and without the contamination of the surroundings due to the scattered liquid.

[0035] The immersion nozzle 10 is such that the gasket 16 having rubber elasticity can be inserted in the outer periphery of the upper end side large diameter pipe portion 12 closer to the upper neck pipe portion 13 side than the anvil portion 11 and the outer thread 15 as the stopper portion, and the gasket 16 is to make the inside of the liquid container body 30 at the mouth portion 39 and / or the head portion 38 narrow to be airtight so as not to depressurize the pressure of the pressurization due to the introduction of the gas such as inert gas.

[0036] The immersion nozzle 10 is such that, in the case where the outer thread 15 having the outer periphery of the upper end side large diameter pipe portion 12, it becomes a reverse thread or a forward thread which is to be screwed with the cap 20 to be described later to plug the mouth portion 39 and / or the head portion 38 of the liquid container body 30, and it is preferable to be a reverse thread. As it is a reverse thread, it is possible to prevent the immersion nozzle 10 from being loosened when the cap 20 is unfastened.

[0037] Next, the liquid container 100 having the immersion nozzle 10 will be described with reference to Figures 1-3 in detail.

[0038] The liquid container 100 is such that, as shown in Figure 1 and as shown in Figure 2 , the cylindrical container barrel portion 30' of the liquid container body 30 is covered with the bottom portion 32 and the top surface 32', the immersion nozzle 10 is inserted through the mouth portion 39 and / or the head portion 38 provided at the top surface 32' to be open, and is closed with the cap 20, thereby becoming a structure in which the liquid 50 can be sealed without omission and can be placed by being stopped in the cylindrical seat 40. The liquid container 100 is a liquid container in which the liquid can be sealed to be accommodated and the liquid can be delivered to be delivered.

[0039] The liquid container body 30 can have a curved slope in which the bottom 32 is inclined toward the outside of the center, or can have a curved surface 33 in which the bottom 32 is more recessed toward the outside, and the lower end 19 of the immersion nozzle 10 advances to the bottom of the curved surface 33 and contacts or has a gap with the bottom of the curved surface 33.

[0040] In addition, the liquid container body 30 can be flat at the bottom as in a drum can, but can have a barrel bottom flange shape in which the bottom periphery is protruded downward, can have a curved surface that is more recessed toward the outside near the center or periphery of the bottom. Alternatively, the liquid container body 30 can have a barrel bottom flange shape in which the bottom periphery is protruded downward, and the bottom surface can be inclined to be collected in the barrel bottom flange shape, and the lower end 19 of the immersion nozzle 10 can advance to the bottom of the inclined surface and contact or have a gap with the bottom (all not shown).

[0041] In the liquid container body 30, for example, the immersion nozzle 10 extends a thin diameter pipe portion 14 connected to the upper neck pipe portion 13 and tapered to a reduced diameter.

[0042] The immersion nozzle 10 is inserted vertically into the liquid container body 30. The immersion nozzle 10 is not limited to the lower end 19 as the front end or the position where the liquid 50 can be discharged and / or flowed in, but for example, is inserted vertically while maintaining a slight predetermined distance between the curved surface 33 of the inner surface of the liquid container body 30 and the lower end 19 of the immersion nozzle 10, and between the bottom 32.

[0043] The mouth 39 of the liquid container body 30 is loaded with the stopper such as the beak 11 of the upper end side thick diameter pipe portion 12 of the tubular immersion nozzle 10 to be latched, and / or the head 38 of the liquid container body 30 is screwed with the inner thread 36 inside the head 38 of the outer thread 15 of the upper end side thick diameter pipe portion 12 of the immersion nozzle 10 to be latched.

[0044] The pressurizing hole 17 provided toward the horizontal direction through the upper neck pipe portion 13 connected to the upper end side thick diameter pipe portion 12 of the immersion nozzle 10 and the same diameter to the reduced diameter is exposed to the inner space of the liquid container body 30.

[0045] The liquid container body 30 has a detachable cap 20 that seals and contains the liquid 50 at the mouth 39 and / or the head 38 thereof.

[0046] The liquid container body 30 is provided with an outer thread 38' on the outer periphery of the head 38, which is screwed to the inner thread 21 of the inner side of the cap 20. The inner thread 21 of the cap 20 and the outer thread 38' of the head 38 of the liquid container body 30 are provided with screw peaks that are designed to rotate in the same direction (normally, locking is to the right, and loosening is to the left). In this case, the outer thread 15 of the immersion nozzle 10 and the inner thread 36 of the inside of the head 38 of the liquid container body 30 are provided with screw peaks that are designed to rotate in the opposite direction (normally, locking is to the left, and loosening is to the right).

[0047] The cap 20 is provided with a gasket 22 on the inner side of the top surface. Preferably, the cap 20 is provided with a cylindrical plug portion that fills the upper end side thick diameter pipe portion 12 while being inserted thereinto, and the gasket 22 is provided on the outer periphery near the lower end of the plug portion, so that liquid does not leak from between the upper end side thick diameter pipe portion 12 and the plug portion.

[0048] The liquid container body 30 is provided with a continuous and slightly narrowed groove 31 on the lower outer periphery. Instead of the continuous groove 31, a discontinuous groove can also be provided.

[0049] The liquid container body 30 can be provided with a recessed handle 34 that is recessed in the barrel 30'.

[0050] The top surface 32' of the liquid container body 30 can be slightly raised near the center. A reverse L-shaped handle protrusion that sandwiches the mouth portion 39 and the head 38 on the center of the top surface 32' can also be provided, and the handle 37 is rotatably attached to the handle protrusion to become a reverse type.

[0051] The liquid container body 30 can also be provided with a recessed handle 34 that is recessed in the barrel 30' instead of or in addition to the handle 37.

[0052] The stand 40 on which the liquid container body 30 is placed is provided with a claw 41 that engages with the groove 31 of the liquid container body 30 near the upper end portion thereof. The stand 40 can also be a cylindrical shape without a bottom surface and a top surface. The liquid container 100 can be stably self-supported by the stand 40. The inner cylinder 42 and the outer cylinder that forms the outer periphery of the inner cylinder 42 and the stand 40 can be connected by a spacer wall 43, or can be connected by a bottom surface, or can have a ring-shaped bottom protrusion 44 protruding from the bottom surface thereof. Thus, since the inner side of the inner cylinder 42 does not have a bottom surface, another liquid container body 30 and stand 40 can be overlapped thereon. The handle 37 and the reverse L-shaped handle protrusion, and even the mouth portion 39 and the head 38, can be accommodated in the inner cylinder 42 in an overlapped manner.

[0053] The liquid container 100 is closed by screwing the cap 20 in the case where the immersion nozzle 10 is inserted into the liquid container body 30, and the liquid 50 contained in the liquid container body 30 is not leaked.

[0054] Thus, the liquid container 100 using the immersion nozzle 10 of the present application can stably store the liquid such as an industrial high-purity liquid, a medical high-purity liquid, and a material liquid for food, which are valuable and expensive, for a long time without being exposed to the outside and without being leaked during transportation or storage.

[0055] The liquid container 100, as shown in Figure 3 may have a detachable connector 60 that can discharge the liquid 50 and supply the liquid.

[0056] The connector 60 is, for example, a connector that is inserted into the upper end side thick diameter pipe portion 12 of the immersion nozzle 10 in a manner that makes the connector 60 having the anti-shaking gasket 65 and the air-tightness maintaining gasket 63 airtight, instead of the cap 20 that fills the head portion 39 or the mouth portion 39 of the liquid container body 30 together with the immersion nozzle 10.

[0057] Alternatively, the connector 60 can be a connector (not shown) that uses a screw having a screw ridge that has the same internal thread as the cap 20 and that can be screwed with the external thread 15 of the outer periphery of the head portion 38 of the liquid container body 30.

[0058] The connector 60, as shown in Figure 3 grasps and has a liquid supply inner pipe 62 that is inserted into the upper neck pipe portion 13 of the immersion nozzle 10 and is locked to the tapered surface 18 (see Figure 1 ) to be liquid-tight and airtight, and a pressurizing outer pipe 64 that fills the mouth portion 39 and / or the head portion 38 (see Figure 1 ) that becomes the opening portion of the upper neck pipe portion 13 to be airtight and surrounds the liquid supply inner pipe 62 and pressurizes the pressurizing hole 17.

[0059] The pressurizing outer pipe 64 of the connector 60 is expanded in diameter at a portion that protrudes from the mouth portion 39 and / or the head portion 38 more than a portion that is embedded in the mouth portion 39 and / or the head portion 38, and the gasket 68 of the outer periphery of the liquid supply inner pipe 62 is completely airtight while the upper end is closed.

[0060] The connector 60 is a connector that has a gasket 61 that is provided to the outer periphery of the liquid supply inner pipe 62 near the front end and that provides the immersion nozzle 10 and the tapered surface 18 with liquid-tightness and airtightness between the outer periphery of the liquid supply inner pipe 62, and a gasket 65 that provides the immersion nozzle 10 with airtightness at a portion where the pressurizing outer pipe 64 is not expanded in diameter and is housed in the mouth portion 39 and / or the head portion 38, and that has a gasket 63 that provides the head portion 38 of the liquid container body 30 and the pressurizing outer pipe 64 with airtightness.

[0061] The pressurizing outer tube 64 is filled in the upper end along the liquid feeding inner tube 62, and is branched in the middle and connected to an air compressor or an inert gas cylinder 66 shown by P, preferably a nitrogen cylinder or an argon cylinder. Between the pressurizing outer tube 64 and the air compressor or the inert gas cylinder 66, a pressure gauge and a safety valve, even a manually operated valve or an automatically operated valve (not shown) to adjust the flow rate are provided.

[0062] Further, the pressurizing outer tube 64 is connected to a pressure relief valve 67 which is a safety valve for opening excess pressure.

[0063] The liquid container 100 using the immersion nozzle 10 is preferably transported to the site without containing the liquid 50, contains the liquid 50 at the site, and discharges to feed the liquid.

[0064] The liquid container 100 is manufactured as follows.

[0065] The immersion nozzle 10 and the liquid container body 30 of the liquid container 100, even the cap 20 and the stand 40, are preferably recyclable resins such as polyolefins such as polyethylene, polypropylene, etc.; polyamides; polyvinyl alcohol; poly(ethylene-poly-vinyl alcohol); polyesters; polyphenylene ether, etc. These resins can be used alone to form a single-layered wall portion, and in addition, a plurality of these resins can be used to form a multi-layered wall portion.

[0066] In particular, the immersion nozzle 10 and the liquid container body 30 of the liquid container 100 can be configured such that both are formed of a polymer (a) which is polyethylene or an ethylene / α-olefin copolymer and a polymer (b) having a weight average molecular weight of 200,000 or more and a density of 0.940 to 0.970 g / cm 3 , according to JIS K 6760, having a melt index of 0.09 g / 10 minutes or less, substantially covers the outer surface, accounts for 30 to 95% by weight in the total weight, and a polymer (b) which is a polymer having a weight average molecular weight of 30,000 or more and less than 200,000 and a density of 0.930 to 0.970 g / cm 3 , according to the same JIS standard, having a melt index of 0.1 to 1.0 g / 10 minutes, substantially covers the inner surface, accounts for 5 to 70% by weight. At this time, the immersion nozzle 10 and the liquid container body 30 are configured such that the elution of particulate impurities into the liquid in the liquid container body 30 is extremely small, and the chemical resistance is excellent, and also have sufficient mechanical strength, and can sufficiently satisfy the latest strict international standards for transport containers for hazardous substances and pharmaceuticals.

[0067] Further, as another specific example, the immersion nozzle 10 and the liquid container body 30 of the liquid container 100 can be configured such that at least the inner surface is formed of a polymer having a density of 0.940 to 0.970 g / cm 3polyethylene or ethylene / α-olefin copolymer resin having a weight average molecular weight of 12 to 26 x 10 4 ; a content of the neutralizing agent, the oxidation inhibitor, and the light resistance stabilizer in the resin is 0.01% by weight or less, as quantified by liquid chromatography, with respect to the total weight of the resin; and the weight average molecular weight of the resin, as measured by gel permeation chromatography, is 12 to 26 x 10 3 ; the content of the polymer having a molecular weight of 1 x 10 4 is less than 2.5% by weight with respect to the total weight of the resin. Here, the α-olefin can be at least one selected from the group consisting of propylene; butene-1, 4-methyl-pentene-1; hexene-1; and octene-1. In this case, the immersion nozzle 10 and the liquid container body 30 can be configured to have excellent mechanical strength and be easy to handle, and to have little elution of impure particles into a solvent stored in the storage. In addition, the liquid container body 30 can be configured to store a solvent used for medical purposes, such as methanol, ethanol, isopropyl alcohol, isobutyl alcohol, ethylene glycol, acetone, ethyl acetate, toluene, dimethylformamide, ethylene glycol acetate, methoxypropyl acetate, butyl cellosolve, and high-purity solvents used for sterilization, disinfection, pharmaceutical raw materials, and the like, such as methanol, ethanol, isopropyl alcohol, and the like, in accordance with the quality standards set by the Japanese Pharmaceutical Bureau.

[0068] In another embodiment, the immersion nozzle 10 and the liquid container body 30 of the liquid container 100 can be configured to have a weight average molecular weight of 12 to 26 x 10 3 , and a molecular weight of 1 x 10 3 or less, a density of 0.940 to 0.970 g / cm 3 , a content of the neutralizing agent, the oxidation inhibitor, and the light resistance stabilizer of 0.01% by weight or less, as quantified by liquid chromatography, and an ultraviolet shielding pigment selected from the group consisting of inorganic pigments of titanium oxide, carbon black, and red iron oxide, and organic pigments of phthalocyanine, quinacridone, and azo of 0.01% to 5% by weight. In this case, the immersion nozzle 10 and the liquid container body 30 can be configured to have excellent mechanical strength and be easy to handle, to have little elution of impure particles into a solvent stored in the storage, and to prevent the contents from deteriorating due to light. Thus, the immersion nozzle 10 and the liquid container body 30 can be widely used for a liquid such as a solvent for semiconductor or a solvent for medical purposes.

[0069] Further, as another specific example, the liquid container 100, the immersion nozzle 10 and the liquid container body 30 can also be formed as a container blow-molded with at least one selected from among a polymer of an olefin including ethylene, propylene, butene-1, 4-methyl-pentene-1, hexene-1, or octene-1, and a copolymer of ethylene and an olefin other than the same, an inner layer of a high-purity resin with a maximum content of 0.01% by weight of a neutralizing agent, an oxidation inhibitor, and a light resistance stabilizer, respectively, an intermediate layer of a solvent barrier resin including poly(ethylene-poly-vinyl alcohol), and an outer layer of a resin composition including a light shielding substance, with a minimum absorbance of the entire layer of the container of 2.0 or more at a wavelength of 400 nm or less as measured by a spectrophotometer, and an absorbance coefficient of the entire layer of the container of 1.5 mm at a wavelength of 400 nm. -1 Further, as another specific example, the liquid container 100, the immersion nozzle 10 and the liquid container body 30 can also be formed as a container blow-molded with at least one selected from among a polymer of an olefin including ethylene, propylene, butene-1, 4-methyl-pentene-1, hexene-1, or octene-1, and a copolymer of ethylene and an olefin other than the same, an inner layer of a high-purity resin with a maximum content of 0.01% by weight of a neutralizing agent, an oxidation inhibitor, and a light resistance stabilizer, respectively, an intermediate layer of a solvent barrier resin including poly(ethylene-poly-vinyl alcohol), and an outer layer of a resin composition including a light shielding substance, with a minimum absorbance of the entire layer of the container of 2.0 or more at a wavelength of 400 nm or less as measured by a spectrophotometer, and an absorbance coefficient of the entire layer of the container of 1.5 mm at a wavelength of 400 nm. -1 Further, as another specific example, the liquid container 100, the immersion nozzle 10 and the liquid container body 30 can also be formed as a container blow-molded with at least one selected from among a polymer of an olefin including ethylene, propylene, butene-1, 4-methyl-pentene-1, hexene-1, or octene-1, and a copolymer of ethylene and an olefin other than the same, an inner layer of a high-purity resin with a maximum content of 0.01% by weight of a neutralizing agent, an oxidation inhibitor, and a light resistance stabilizer, respectively, an intermediate layer of a solvent barrier resin including poly(ethylene-poly-vinyl alcohol), and an outer layer of a resin composition including a light shielding substance, with a minimum absorbance of the entire layer of the container of 2.0 or more at a wavelength of 400 nm or less as measured by a spectrophotometer, and an absorbance coefficient of the entire layer of the container of 1.5 mm at a wavelength of 400 nm. 3 Further, as another specific example, the liquid container 100, the immersion nozzle 10 and the liquid container body 30 can also be formed as a container blow-molded with at least one selected from among a polymer of an olefin including ethylene, propylene, butene-1, 4-methyl-pentene-1, hexene-1, or octene-1, and a copolymer of ethylene and an olefin other than the same, an inner layer of a high-purity resin with a maximum content of 0.01% by weight of a neutralizing agent, an oxidation inhibitor, and a light resistance stabilizer, respectively, an intermediate layer of a solvent barrier resin including poly(ethylene-poly-vinyl alcohol), and an outer layer of a resin composition including a light shielding substance, with a minimum absorbance of the entire layer of the container of 2.0 or more at a wavelength of 400 nm or less as measured by a spectrophotometer, and an absorbance coefficient of the entire layer of the container of 1.5 mm at a wavelength of 400 nm.

[0070] The liquid container 100, the liquid container body 30 and the immersion nozzle 10 can be manufactured by known blow molding such as direct blow molding (push blow molding), injection blow molding (injection blow molding), multi-layer push blow molding, and stretch blow molding, or injection molding (injection molding), as necessary. The cap 20 and the stand 40 can also be manufactured in the same manner, as necessary. The connector 60 can also be manufactured in the same manner, as necessary.

[0071] The liquid container 100 is used with the cap 20 closed, as shown in FIG. 1. Figures 1-2 At this time, the liquid 50 can be filled or not.

[0072] To deliver the liquid 50 from the liquid container 100, the cap 20 is replaced with the connector 60, and the inert gas is caused to flow from the inert gas cylinder 66 through the pressurizing outer tube 64 to the liquid container body 30, and the liquid 50 is delivered to a desired step by being discharged from the liquid container body 30 through the immersion nozzle 10 and the delivery inner tube 62 by the pressure. Figure 3 [Embodiment]​

[0073] Hereinafter, the embodiments of the present application will be described in detail, but the scope of the present application is not limited to these embodiments.

[0074] (Manufacturing Example 1) A pipe was manufactured by extrusion molding using high-density polyethylene having an MFR of 0.2 g / 10 min and a density of 0.951 g / cm 3 Figure 1 Next, a plug portion having a pressurizing hole hollowed in the horizontal direction was manufactured by injection molding using high-density polyethylene having an MFR of 0.2 g / 10 min and a density of 0.951 g / cm 3 The pipe and the plug were heat-welded and an O-ring was installed to manufacture the immersion nozzle 10.

[0075] (Manufacturing Example 2) A 20 L capacity liquid container body 30 and a cap 20 were manufactured by blow molding using high-density polyethylene having an MFR of 0.4 g / 10 min and a density of 0.956 g / cm 3 Figure 1 The immersion nozzle 10 manufactured in the manufacturing example 1 was installed to the liquid container body 30 and the cap 20 was covered to obtain the liquid container 100.

[0076] (Manufacturing Example 3) The cap 20 was removed from the liquid container 100 obtained in the manufacturing example 2 and was replaced with the connector 60 shown in FIG. 6 to obtain the liquid container 100 with the connector. Figure 3

[0077] (Use Example 1) The liquid container 100 sealed with the cap 20 after filling the liquid 50 using the immersion nozzle 10 obtained was used to store the liquid 50 and was used for transportation. The liquid container 100 with the connector 60 installed after filling the liquid 50 using the immersion nozzle 10 obtained was used to discharge the liquid 50 and was used for liquid delivery. After the liquid 50 discharge / liquid delivery was completed, the connector 60 was removed and was replaced with the cap 20 as necessary, but at this time, the liquid 50 was not discharged from the pressurizing hole 17.

[0078] (Comparative Example 1) ​​​Instead of the immersion nozzle 10 obtained in Production Example 1, the same setting as in Production Examples 1 to 3 was performed except that the pressurizing hole 17 was directed downward, and after the liquid container 100 with the attachment was obtained, the same use as in Use Example 1 was performed, and at the time of detaching the attachment 60, in the case where the internal pressure was not sufficiently opened, etc., the liquid 50 was scattered and sprayed from the pressurizing hole, and not only loss was caused but also the surroundings were contaminated.

[0079] [Industrial applicability] The immersion nozzle and the liquid container using the same according to the present application can be used for liquid delivery in a field using high-quality liquid, regardless of the fields of industrial production, pharmaceutical products, food, etc. [Symbol explanation]

[0080] 10: immersion nozzle 11: anvil portion 12: upper end side thick diameter pipe portion 13: upper neck pipe portion 14: thin diameter pipe portion 15: external thread 16: gasket 17: pressurizing hole 18: tapered surface 19: lower end 20: cap 21: internal thread 22: gasket 30: liquid container body 30': trunk portion 31: groove 32: bottom 32': top surface 33: curved surface 34: recessed handle 35: narrow portion 36: internal thread 37: handle 38: head portion 38': external thread 39: mouth portion 40: seat 41: claw 42: inner cylinder 43: spacer wall 44: bottom protrusion 50: liquid 50': residual liquid 60: attachment 62: liquid delivery inner pipe 63: airtight maintenance gasket 64: pressurizing outer pipe 65: Anti-slosh gasket 66: Inert gas cylinder 67: Pressure relief valve 68: Gasket 100: Liquid container

Claims

1. An immersion nozzle, wherein the immersion nozzle is a tubular immersion nozzle inserted vertically into a liquid container body to deliver liquid contained in the liquid container body, which has a curved surface and / or an inclined surface recessed outwards at the bottom and is capable of being sealed, characterized in that, have: The upper, wider diameter tube portion has a stop portion that allows it to fasten to the inside of the opening and / or head of the liquid container body; the upper neck tube portion is connected to the upper, wider diameter tube portion and has the same diameter to a narrower diameter; and the narrower diameter tube portion is connected to the upper neck tube portion and extends to the lower end through a tapered narrowing surface. The pressure hole extends horizontally through the upper neck tube portion.

2. The immersion nozzle according to claim 1, characterized in that, The stop portion has a serration on the outer periphery of the upper end side of the larger diameter tube portion, and / or The stop portion has an external thread that engages with the inside of the opening and / or the head.

3. The immersion nozzle according to claim 1, characterized in that, The external thread is a reverse thread or a forward thread used to engage the opening and / or head by filling it with a cap.

4. A liquid container having a curved surface and / or an inclined surface recessed from the bottom towards the outside for containing liquid in a sealed manner and for discharging liquid, characterized in that, It features a tubular immersion nozzle and a removable cap. The tubular immersion nozzle is inserted perpendicular to the curved surface and / or the bottom of the inclined surface of the liquid container body, and has: an upper, larger diameter tube portion with a stop portion that allows it to engage with the inside of the opening and / or head of the liquid container body; an upper neck tube portion connected to the upper, larger diameter tube portion and of the same diameter to a reduced diameter; and a smaller diameter tube portion connected to the upper neck tube portion and extending through a tapered reduced diameter to the lower end, with a pressurization hole penetrating the upper neck tube portion in a horizontal direction. The removable cap is used to seal and contain the liquid at the opening and / or the head.

5. The liquid container according to claim 4, characterized in that, It has a cylindrical base with a claw at the upper end, which engages with a groove that is continuously or discontinuously arranged on the outer periphery below the liquid container body.

6. The liquid container according to claim 4, characterized in that, The liquid container body has a handle on its shoulder that extends across the opening and / or the head, and / or It has a recessed handle recessed in the body of the liquid container.

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