JP2009107643A - Distribution device and distributing method for liquid chemical - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a distribution device for a liquid chemical excellent in liquid remaining characteristics. <P>SOLUTION: A container 10 being a pale can for the liquid chemical is equipped with a cylindrical inside container 1 formed of a chemical-resistant synthetic resin and an outside container 2 formed of a metal constituting an external shell of the inside container 1. The inside container 1 has a mouth 11 opening so as to pour the liquid chemical. A dispenser 40 is equipped with a plug body 41, a venting means 42 and a liquid discharging pipe 43. The plug body 41 is clamped so as to be sealable on the mouth part 11. The venting means 42 has an opening 42b penetrating the plug body 41 to make a compressed fluid pass into the container 1. In the liquid discharging pipe 43, one end thereof is extended toward the inside container 1, and the other end is projected from the plug body 41 and mounted so as to be sealable to the plug body 41. The liquid discharging pipe 43 has a terminal opening 43a bent at its middle of one end and reaching the end edge of the bottom face of the inside container 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a liquid medicine dispensing apparatus and a dispensing method. In particular, the present invention relates to a liquid chemical dispensing apparatus and method for storing, transporting and dispensing fluids such as electronics industry chemicals.

  For example, chemicals for electronic industry such as photoresist are stored in a chemical container for transportation and delivered to a manufacturing factory. Such chemical containers include a link system that repeatedly uses the same container and a one-way system that uses a new container every time. In particular, in order not to affect the purity of high-purity chemicals, it is preferable to use a one-way type container, but there is a disadvantage that it is not economical. In recent years, a double storage type container in which both of the above types are combined has become widespread.

  In general, a double retractable container has a bag (bag) made of a flexible film that has been washed in advance. The film bag is formed from an inert material and is provided in an outer container. After draining the drug from the film bag, the film bag is discarded and a new film bag is filled with the drug. And the outer container containing a joint etc. is used repeatedly.

As such a double storage type container, a liquid medicine container that can discharge liquid medicine safely and reliably, and a liquid medicine dispensing device including a dispenser have been invented (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 6-100087

  FIG. 12 is a front view of a liquid medicine dispensing device including a container and a dispenser according to Patent Document 1, and a main part thereof is shown in cross section. FIG. 12 of the present application corresponds to FIG.

  In FIG. 12, the liquid medicine dispensing device according to Patent Document 1 includes a container 7 and a dispenser 8. The container 7 includes an outer container 716, a port (hereinafter referred to as an attachment body) 718, and a retainer 719. The container 7 includes a flexible bag 720, a liquid discharge tube 722, and a coupling 724. The container 7 further includes a lid 726, a breakable seal film 727, and a cap 728.

  In FIG. 12, the outer container 716 has a mouth portion 730 that forms a male screw, and a retainer 719 and an attachment body 718 are attached to the mouth portion 730. The bag 720 is attached to the attachment body 718 and provided in the outer container 716. The coupling 724 is provided in the attachment body 718 and connected to a liquid discharge tube 722 that is lowered into the interior of the bag 720.

  In FIG. 12, a lid 726 surrounds the attachment body 718, the coupling 724, and the mouth 730 of the outer container 716, and seals the attachment body 718 and the outer container 716 with a breakable seal film 727. The cap 728 is screwed to the top of the lid 726.

  In FIG. 12, the outer container 716 is a steel drum, and includes a main plate 732, a body 734, and an inclined top plate 736. The outer container 716 has a mouth 730 in the top plate 736, and the body 734 has a pair of molded handles 738.

  In FIG. 12, the dispenser 8 includes a lower connector 842, a retainer 844, a probe 846, and an upper connector 848. The retainer 844 is nested within the lower connector 842. The probe 846 passes through the retainer 844 and is supported by the retainer 844. The upper connector 848 is connected to the retainer 844 and the lower connector 842 and surrounds the probe 846.

  In FIG. 12, after attaching the attachment body 718 to which the bag 720 is attached to the mouth 730, the bag 720 is preferably inflated with nitrogen before being filled with the liquid chemical. Thereafter, the bag 720 is filled with liquid chemicals via the attachment body 718. Next, the liquid discharge tube 722 and the coupling 724 are inserted into the attachment body 718. The lid 726 places a breakable seal membrane 727 on the top end of the mounting body 718 and seals the cavity 776. Further, a cap 728 can be provided on the mouth 730 of the container 7 to cover the breakable seal film 727.

  In FIG. 12, during transport and handling of the container 7, all the gas generated in the flexible bag 720 flows through the gas passage formed by the coupling 724 of the drain tube 722, and the liquid is discharged. The tube 722 can collect in a space 776 provided at the upper end of the coupling 724.

  The container 7 according to Patent Document 1 includes a breakable seal film 727, and the probe 846 provided in the dispenser 8 breaks through the seal film 727 so that the probe 846 can be inserted into the void 790. By connecting the dispenser 8 to the container 7 and pressurizing the inside of the bag 720 with nitrogen through the dispenser 8 and the empty space 782, the liquid chemical can be discharged from the probe 846.

  The container 7 according to Patent Document 1 has a configuration in which a coupling 724 with a liquid discharge tube 722 is incorporated and transported. If the liquid discharge tube is arranged on the dispenser side, the manufacturing cost of the liquid chemical container can be reduced.

  In addition, the container 7 according to Patent Document 1 is a so-called canister that is a completely sealed container, and has a robust structure formed by processing a thick metal plate, but has a problem that the manufacturing cost is expensive. By replacing the expensive canister can with a thin metal plate, a pail can for liquid chemicals that can be manufactured at low cost can be provided.

  Furthermore, the container 7 according to Patent Document 1 is attached to a new bag 720 after the flexible bag 720 from which the liquid chemical has been discharged is discarded and the liquid discharge tube 722 is washed. A one-way pail can saves the time for washing the liquid discharge tube 722 and the time for refilling the outer container 716 with the bag 720, which is rather economical overall.

  For example, by forming a pail can for a liquid chemical having a double structure in which a molded inner container made of chemical-resistant synthetic resin is surrounded by a metal outer container, it is cheaper and simpler than the container according to Patent Document 1. It is possible to provide a container for a liquid medicine having a configuration. Moreover, although the dispenser by patent document 1 distributes a liquid chemical | medical agent via a complicated fluid channel | path, by storing a liquid chemical | medical agent in a pail can, it can pressurize this pail can and can distribute a liquid chemical | drug | medicine. . That is, the configuration of the dispenser can be simplified. It would be convenient to have a liquid chemical dispensing device that is combined with such a liquid chemical pail can and a dispenser with a simple configuration that can be connected to the liquid chemical pail can.

  In addition, the canister can according to Patent Document 1 has a bottom surface that forms a curved surface protruding outward, and can be assembled so that the liquid discharge tube is positioned at the center of the bottom surface. Therefore, the canister can according to Patent Document 1 is a container excellent in so-called residual liquid characteristics in which liquid chemicals hardly remain inside the container. On the other hand, the pail can has a problem that the liquid chemical tends to remain inside the container because the bottom surface is flat and the liquid discharge tube is assembled at the periphery of the bottom surface. There is a need for a liquid chemical dispensing device that is resistant to liquid chemicals and that has excellent residual liquid characteristics. The above can be said to be the subject of the present invention.

  The present invention has been made in view of such problems, and has a residual liquid characteristic comprising a liquid chemical pail can that can be manufactured at low cost, and a dispenser with a simple configuration that can be connected to the liquid chemical pail can. An object of the present invention is to provide an excellent liquid chemical dispensing apparatus and method.

  The inventor of the present invention can easily configure a dispenser by forming a pail can having a double structure in which an inner container made of a chemical-resistant synthetic resin formed by molding a container for liquid medicine is surrounded by an outer container made of metal. By devising the structure, it has been found that the residual liquid characteristics are excellent, and based on this, the inventors have invented the following new liquid chemical distribution device and distribution method.

  (1) For liquid chemicals comprising a cylindrical inner container made of a chemical-resistant synthetic resin having an opening that allows injection of liquid chemicals, and a metal outer container that constitutes the outer shell of the inner container A dispenser connected to the mouth portion of the pail can, and a dispenser connected to the mouth portion so as to be sealably fastened to the mouth portion; and Ventilation means that has an opening penetrating from the outside of the plug body toward the mouth, and is capable of ventilating compressed fluid inside the inner container, one end extending toward the bottom surface of the inner container, and the other end of the plug body A liquid discharge pipe that protrudes from the plug main body and is sealed to the plug main body, and the liquid discharge pipe has a terminal opening that is refracted from one end and reaches the edge of the bottom surface of the inner container. Have A liquid chemical distribution device in which liquid chemical is supplied from the terminal opening and discharged from the other end of the liquid discharge pipe by pressurizing the compressed fluid to the air layer of the inner container through the ventilation means. .

  The liquid medicine dispensing device according to the invention of (1) includes a pail can and a dispenser for liquid medicine. Pail cans for liquid chemicals are provided with an inner container made of chemical-resistant synthetic resin and an outer container made of metal. The inner container is formed in a cylindrical shape and has a mouth portion that is open so that liquid chemicals can be injected. The outer container constitutes the outer shell of the inner container. The dispenser connects to the mouth of the pail can.

  In the liquid medicine distribution device according to the invention of (1), the dispenser includes a cylindrical plug body, a venting means, and a liquid discharge pipe. The plug body is fastened to the mouth so as to be sealed. The ventilation means has an opening penetrating from the outside of the plug main body toward the mouth, and is able to vent the compressed fluid into the inside of the inner container. One end of the liquid discharge pipe extends toward the bottom surface of the inner container, the other end projects from the plug body, and is attached to the plug body so as to be sealed.

  The liquid discharge pipe has a terminal opening that is refracted from the middle of one end and reaches the edge of the bottom surface of the inner container. Then, the compressed fluid is pressurized to the air layer of the inner container through the ventilation means, whereby the liquid chemical is supplied from the terminal opening and the liquid chemical is discharged from the other end of the liquid discharge pipe.

  Here, the outer container of the liquid chemical pail can has a top plate, a body, and a main plate. The top plate has a hole from which the mouth projects. The fuselage surrounds the outer periphery of the inner container. The main plate is in contact with the bottom surface of the inner container. The outer container has rigidity so as to prevent deformation of the inner container against the internal pressure applied to the inner container.

  The inner container is formed in a cylindrical shape includes a shape in which the inner container is formed in a right circular cylinder shape, and includes a shape in which the inner container is formed in a conical trapezoidal shape in which the area of the upper surface is larger than the area of the bottom surface. It is out. Further, the fact that the inner container is formed in a cylindrical shape does not exclude that the mouth protrudes from the upper surface of the inner container. Pail cans for liquid chemicals do not necessarily exclude that the inner container is formed in a rectangular tube shape. However, in order to withstand the ease of manufacturing the inner container and deformation such as expansion due to internal pressure, the inner container is preferably a cylinder rather than a square cylinder.

  The inner container made of a chemical resistant synthetic resin may be that the inner container is made of a chemical resistant synthetic resin and can be mass-produced by plastic molding of the inner container. Furthermore, the inner container made of chemical-resistant synthetic resin means an inner container made of a synthetic resin in which chemicals contained in the inner container, that is, chemical substances are in contact with the inner container and chemical reaction, for example, contamination by ions is difficult. is doing. The chemical resistant synthetic resin includes an acid resistant synthetic resin, an alkali resistant synthetic resin, a corrosion resistant synthetic resin, and a polyolefin including, for example, polyethylene (PE) or polypropylene (PP) is preferable.

  The outer container may be made of a metal plate to cover the inner container, and constitutes the outer shell of the inner container. The outer container has a structure that protects the inner container or reinforces the mechanical strength of the inner container, and attaches necessary accessories such as a handle and a vine handle.

  The fact that the outer container constitutes the outer shell of the inner container does not necessarily mean that the outer container contacts the entire outer periphery of the inner container. In order to increase the mechanical strength of the outer container itself, an annular zone may be provided on the body surrounding the outer periphery of the inner vessel, and an annular zone may be provided concentrically on the top plate. May be contacted or separated. Further, a hole through which the mouth protrudes may be provided in the top plate, and an annular step may be provided around the hole to reinforce so that a tensile stress is concentrated in the hole and no crack is generated.

  The inner container has a mouth portion that can be injected with liquid medicine, and the liquid medicine can be discharged from the mouth portion. The mouth part may be formed integrally with the main body of the inner container formed in a cylindrical shape, and a separate mouth part may be welded to the main body of the inner container. Further, an annular packing may be interposed between the base of the mouth and the outer container, and it can be waterproofed so that liquid chemicals do not enter between the inner container and the outer container.

  For example, the outer container may be a so-called top plate-fixed pail can in which a flat steel plate is formed into a cylindrical shape, the body is manufactured, and the top plate and the base plate are fixed to the body by tightening. It may be a so-called top plate detachable band type pail can that is fastened to the fuselage by a band, and the top plate has a plurality of claws on the periphery, and this top plate is fastened to the fuselage by a plurality of claws. The so-called top plate detachable lag type pail can may be used. Moreover, the top plate and the ground plate may be seam welded to the end of the body as necessary. Either the top plate or the ground plate may be seam-welded to the end of the body as necessary.

  Thus, a pail can formed from a thin steel plate is easier to manufacture and can be manufactured at a lower cost than a canister can formed from a thick steel plate.

  Pail cans for liquid chemicals may be provided with external threads on the outer periphery of the mouth part. The mouth part of the mouth part is sealed with a cap, and the mouth part is screwed with a lid so that the liquid medicine pail can is sealed. Is done. And it can convey without spilling liquid chemicals. In addition, the dispenser can be easily attached and detached using a mouth portion provided with a male screw on the outer periphery.

  One end of the plug body of the dispenser may be opened in a circular shape, and by forming a female thread on the inner periphery of the opening, the plug body can be screwed to the mouth of the pail can for liquid medicine. A streak knurl may be formed on the outer periphery of the plug body, and the plug body can be securely screwed to the mouth. Further, a seal ring may be provided in the opening of the plug body, and the mouth portion can be sealed by fastening the plug body to the mouth portion.

  For example, the ventilation means may include an L-shaped (elbow-shaped) synthetic resin second joint that includes an opening penetrating from the outside of the plug body toward the mouth, and is connected to the opening of the plug body. And a 2nd joint can be connected to opening of a plug main body, and a compressed fluid can be ventilated inside an inner side container.

  One end of the liquid discharge pipe extends toward the bottom surface of the inner container, the other end projects from the plug body, and is attached to the plug body so as to be sealed. One end of the liquid discharge pipe may be cut obliquely at the tip, or may be cut so as to be orthogonal to the axial direction. An L-shaped joint (joint) may be connected to the other end of the liquid discharge pipe. The liquid discharge pipe has a terminal opening that is refracted from one end of the liquid discharge pipe and reaches the edge of the bottom surface of the inner container.

  For example, the plug body can be configured to include a coupling ring, a plug shell, and a seal ring. The coupling ring is screwed onto the outer periphery of the mouth portion. The plug shell is rotatably connected to the coupling ring. The seal ring is held inside the coupling ring, and is in close contact with the end face of the mouth portion to seal the ventilation at the boundary between the coupling ring and the plug shell. The plug shell may be provided with a ventilation means and a first joint made of synthetic resin for detachably fixing the liquid discharge pipe, and the plug shell is rotatably connected to the coupling ring. The supply port of the ventilation means or the discharge port of the liquid discharge pipe can be arranged in an arbitrary direction. Further, the plug body and the liquid discharge pipe are preferably made of polyolefin.

  A commercially available straight type holder can be used for the first joint. This holder can hold the liquid discharge pipe slidably on the plug body. Moreover, this holder can detachably fix the liquid discharge pipe. For example, the holder includes a bolt-shaped hollow main body and a cap nut having an open center. The bolt-shaped main body can hold the liquid discharge pipe slidably, has a male screw portion that can be fastened to the plug main body on one end side, and has a conical sleeve on the other end side. When the cap nut is fastened to the other end of the bolt-shaped main body, the sleeve is reduced in diameter, and the liquid discharge pipe can be fixed to the holder. When the cap nut is opened from the other end side of the bolt-shaped main body, the sleeve returns and the liquid discharge pipe can be pulled out.

  Thus, the position can be adjusted using the holder so that one end of the liquid discharge pipe reaches the edge of the bottom surface of the inner container. Then, the compressed fluid is pressurized to the air layer of the inner container through the ventilation means, whereby the liquid chemical is supplied from the terminal opening and the liquid chemical is discharged from the other end of the liquid discharge pipe.

  The liquid chemical dispensing apparatus according to the invention of (1) is a low-priced container for liquid chemicals by forming a double-structured pail can in which a molded chemical-resistant synthetic resin inner container is surrounded by a metal outer container. Can be provided. The dispenser has a simple structure comprising a cylindrical plug body, a venting means, and a refracted liquid discharge pipe. By directly pressurizing a liquid can pail can through the venting means provided in the dispenser. Can dispense liquid chemicals.

  Furthermore, the liquid medicine distribution device according to the invention of (1) is configured such that when the liquid chemical pail can is inclined by using an inclined table, or when the liquid chemical pail can is inclined, Since the liquid chemical remaining on the edge can be supplied to the terminal opening of the liquid discharge pipe, it is difficult for the liquid chemical to remain in the liquid chemical pail can. That is, it is possible to provide a liquid chemical distribution device having excellent residual liquid characteristics.

  (2) The part which arrange | positions the said opening part to the peripheral edge vicinity of the said inner container, makes the terminal opening of the said liquid discharge pipe reach the edge of the bottom face of the said inner container facing the said mouth part, and opposes the said mouth part (1) The liquid chemical distribution device according to (1), wherein the pail can is disposed so as to be downward.

  In the liquid medicine dispensing device according to the invention of (2), the mouth portion is arranged near the periphery of the inner container, and the terminal opening of the liquid discharge pipe is made to reach the edge of the bottom surface of the inner container facing the mouth portion. Distributing liquid chemicals with excellent residual liquid properties, with liquid chemicals that do not easily remain in the liquid chemical pail cans by tilting the liquid chemical pail cans so that the part facing the mouth is downward It is a device.

  (3) The liquid medicine distribution according to (2), further comprising a tilting table including a main body forming a slope and a pair of fall prevention poles erected on the lower side of the slope, wherein the pail can is tilted. apparatus.

  The main body of the tilting table may be formed in a substantially trapezoidal box shape in which the four circumferences of the developed metal plate are bent, and is formed in a substantially triangular box shape in which the three circumferences of the developed metal plate are bent. May be. You may reinforce a slope by providing a rib inside the main body formed in a box shape. The main body of the tilting table may be a block body that forms a slope on the upper surface.

  The fall prevention pole may be a hollow round pipe or a round bar. One end of the fall prevention pole may be welded to the main body of the tilting table, or may be screwed to the main body of the tilting table. A male screw is provided at one end of the fall prevention pole, a female screw of the main body of the tilting table is provided, and the anti-falling pole and the main body of the tilting table may be combined. May be provided, and this screw member may be used to connect the fall prevention pole and the main body of the tilting table.

  The pair of fall prevention poles are preferably arranged at a distance smaller than the diameter of the liquid chemical pail can, and the liquid chemical pail can placed on the slope of the main body is prevented from falling. The pair of fall prevention poles are preferably lower than the height of the liquid chemical pail can, and preferably higher than the center of gravity of the pail can filled with the liquid chemical.

  (4) The liquid medicine distribution device according to (2) or (3), wherein the pail can is inclined at an angle of 2 degrees or more and 30 degrees or less with respect to a horizontal plane.

  If the pail can is inclined at less than 2 degrees, the liquid chemical tends to remain inside the pail. If the pail can is inclined at more than 30 degrees, the liquid chemical may overflow from the mouth at the beginning of the inclined arrangement. is there.

  (5) For liquid chemicals comprising a cylindrical inner container made of a drug-resistant synthetic resin having a mouth opening to allow injection of liquid chemicals, and a metal outer container constituting the outer shell of the inner container And a dispenser connected to the mouth portion of the pail can, the method of dispensing the liquid chemical, wherein the dispenser is sealably fastened to the mouth portion A main body, an opening penetrating from the outside of the plug main body toward the mouth portion, a ventilation means capable of ventilating a compressed fluid inside the inner container, and one end extending toward a bottom surface of the inner container; The other end protruding from the plug body, and a liquid discharge pipe that is sealably attached to the plug body, and the liquid discharge pipe is refracted from the middle of one end to reach the edge of the bottom surface of the inner container. Open terminal And the compressed fluid is pressurized to the air layer of the inner container through the ventilation means, so that the liquid chemical is supplied from the terminal opening and discharged from the other end of the liquid discharge pipe. Medicine distribution method.

  (6) The part which arrange | positions the said mouth part in the peripheral vicinity of the said inner container, makes the terminal opening of the said liquid discharge pipe reach the edge of the bottom face of the said inner container facing the said mouth part, and opposes the said mouth part (5) The method for dispensing liquid chemicals according to (5), wherein the pail cans are inclined so that the lower side is located downward.

  (7) Distributing the liquid chemical according to (6), wherein the pail can is disposed at an inclination using an inclined table including a main body that forms an inclined surface and a pair of fall prevention poles erected on the lower side of the inclined surface. Method.

  (8) The method for dispensing a liquid medicine according to (6) or (7), wherein the pail can is disposed at an inclination of 2 degrees or more and 30 degrees or less with respect to a horizontal plane.

  The liquid medicine dispensing apparatus according to the present invention can provide a liquid medicine container at a low cost by forming a double-structured pail can in which a molded chemical resistant synthetic resin inner container is surrounded by a metal outer container. The dispenser has a simple structure comprising a cylindrical plug body, a venting means, and a refracted liquid discharge pipe. By directly pressurizing a liquid can pail can through the venting means provided in the dispenser. Can dispense liquid chemicals.

  Furthermore, the liquid chemical dispensing device according to the present invention is provided on the edge of the bottom surface of the inner container by tilting the liquid chemical pail can using the tilting table or tilting the liquid chemical pail can. Since the liquid chemical to be supplied can be supplied to the terminal opening of the liquid discharge pipe, it is possible to provide a liquid chemical distribution device having excellent residual liquid characteristics that makes it difficult for the liquid chemical to remain in the liquid chemical pail can.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 is a perspective external view showing an embodiment of a liquid medicine pail can provided in a liquid medicine dispensing apparatus according to the present invention. FIG. 2 is a front view showing an embodiment of a dispenser connected to the liquid chemical pail can according to the above-described embodiment, and shows a cross section of the main part. FIG. 3 is an exploded view of the dispenser according to the embodiment, in which a pail can for liquid medicine is connected. FIG. 4 is a longitudinal sectional view of a liquid chemical pail can and a dispenser according to the embodiment, and is a state diagram in which the dispenser is connected to the liquid chemical pail can.

  FIG. 5 is a perspective external view showing a state immediately before the dispenser according to the embodiment is connected to a pail can for liquid medicine. FIG. 6 is a perspective external view showing a state in which the plug body of the dispenser according to the embodiment is fastened to the mouth portion of the liquid chemical pail can. FIG. 7 is a perspective external view showing a state in which the dispenser according to the embodiment is connected to a liquid chemical pail.

  FIG. 8 is a perspective external view of the tilting table according to the first example in which the liquid chemical pail can according to the embodiment is tilted at 12 degrees. FIG. 9 is a perspective external view of a tilting table according to a second example in which the liquid chemical pail cans according to the above-described embodiment are inclined at 30 degrees. FIG. 10 is a perspective external view in which a liquid chemical pail can is disposed on the tilting table according to the first embodiment. FIG. 11 is a perspective external view in which a pail can for liquid medicine is arranged on the tilting table according to the second embodiment.

  First, the configuration of a liquid chemical pail can provided in the liquid chemical dispensing apparatus according to the present invention will be described. In FIG. 1, a pail can for liquid medicine (hereinafter referred to as a container 10) includes an inner container 1 made of chemical-resistant synthetic resin and an outer container 2 made of metal. The inner container 1 is formed in a cylindrical shape. The outer container 2 constitutes the outer shell of the inner container 1. The inner container 1 has a mouth portion 11 that is open so that liquid chemicals can be injected.

  In FIG. 1, the outer container 2 has a top plate 21, a body 22, and a ground plate 23. The top plate 21 has a hole 2a from which the mouth portion 11 protrudes. The body 22 surrounds the outer periphery of the inner container 1. The ground plane 23 is in contact with the bottom surface of the inner container 1.

  The inner container 1 shown in FIG. 1 is formed in a conical trapezoidal shape in which the area of the upper surface is larger than the area of the bottom surface. The inner container 1 is formed of a chemical resistant synthetic resin. The inner container 1 is integrally molded with a mouth 11.

  In FIG. 1, the outer container 2 is made of a metal plate so as to cover the inner container 1, and constitutes an outer shell of the inner container 1. The outer container 2 is not necessarily in contact with the entire outer periphery of the inner container 1. In FIG. 1, a ring zone (not shown) may be provided on the body 22 surrounding the outer periphery of the inner container 1, and the mechanical strength of the outer container 2 itself can be increased. For example, the annular zone is partially separated from the inner container 1.

  In FIG. 1, the top plate 21 is provided with a plurality of annular zones 21a concentrically so as to increase the mechanical strength of the outer container 2 itself. The annular zone 21 a is in partial contact with the inner container 1. In addition, an annular step 21b is provided around the hole 2a, and is reinforced so that tensile stress concentrates on the hole 2a and cracks do not occur (see FIG. 2).

  In FIG. 4, the ground plane 23 is provided with a plurality of annular zones 23a concentrically. The annular zone 23 a is in partial contact with the bottom surface (outer surface) of the inner container 1. The annular zone 23 a reinforces the mechanical strength of the outer container 2 and resists deformation (deflection) due to the weight of the liquid chemical contained in the inner container 1.

  In FIG. 1, a male screw 11a is formed on the outer periphery of the mouth portion 11 (see FIG. 2). The container 10 is sealed by sealing the opening of the mouth part 11 with a cap 31 and screwing the mouth part 11 with a lid 32. And it can be transported without spilling liquid chemicals.

  The outer container 2 shown in FIG. 1 is a so-called top plate fixing type pail in which a flat steel plate is formed in a cylindrical shape to produce a body 22, and the top plate 21 and the base plate 23 are fixed to the body by winding. It is a can. Further, the outer container 2 shown in FIG. 1 includes a suspension 24 on the top plate 21. The mounting bracket 24a that rotatably supports the suspension 24 is joined to the top plate 21 by spot welding. The suspension 24 is disposed at the approximate center of the top plate 21.

  The outer container 2 is a so-called top plate detachable band type pail in which a flat steel plate is formed in a cylindrical shape to produce a body 22 and a top plate 21 is fastened to the body 22 by a band (not shown). It can be a can. This top plate detachable band type pail can is provided with a pair of ears (not shown) on the top plate 21 side of the body 22 and is pivotally connected to the pair of ears (not shown). May be provided.

  The outer container 2 is a so-called top plate detachable type in which a flat steel plate is formed in a cylindrical shape to produce a body 22 and a top plate 21 is fastened to the body 22 by a plurality of claws (not shown). It is good also as a rug type pail can. And a vine-like handle can also be provided in the top plate detachable lag type pail can.

  As shown in FIG. 1, the body 22 is formed in a truncated cone shape in which the area on the top plate 21 side is larger than the area on the ground plate 23 side. However, the body 22 may be formed in a right cylindrical shape. Thus, a pail can formed from a thin steel plate is easier to manufacture and can be manufactured at a lower cost than a canister can formed from a thick steel plate.

  Next, the structure of the dispenser provided in the liquid medicine dispensing apparatus according to the present invention will be described. 2 or 3, the dispenser 40 can be easily attached to and detached from the container 10 using the mouth portion 11 provided with the male screw 11 a on the outer periphery. The dispenser 40 includes a cylindrical plug body 41, a venting means 42 that can ventilate the compressed fluid into the inner container, and a liquid discharge pipe 43.

  2 or 3, one end of the plug main body 41 is opened in a circular shape, and the plug main body 41 can be screwed to the mouth portion 11 by forming a female female 411 on the inner periphery of the opening. A streak knurled 412 is formed on the outer periphery of the plug main body 41 so that the plug main body 41 can be reliably screwed to the mouth portion 11. Further, a seal ring 41 a is built in the opening of the plug body 41, and the mouth portion 11 can be sealed by fastening the plug body 41 to the mouth portion 11.

  2 or 3, the ventilation means 42 includes an opening 42b penetrating from the outside of the plug body 41 toward the mouth portion 11, and is an L-shaped (elbow-shaped) synthetic resin second joint connected to the opening 42b. 42a can be included. A commercially available elbow type quick joint can be used for the second joint 42a. The second joint 42 a is connected to the opening 42 b of the plug body 41 so that the compressed fluid can be vented to the inside of the inner container 1.

  2 or 4, one end of the liquid discharge pipe 43 extends toward the bottom surface (inner surface) of the inner container 1, and the other end protrudes from the plug body 41 and is attached to the plug body 41 so as to be sealed. One end 431 of the liquid discharge pipe 43 is cut obliquely at a slight angle, and an L-shaped joint (joint) 45 is connected to the other end 432 of the liquid discharge pipe 43. As the joint 45, a commercially available elbow type quick joint can be used.

  2 or 4, the liquid discharge pipe 43 has a terminal opening 43 a that is refracted from the middle of one end 431 and reaches the edge of the bottom surface (inner surface) of the inner container 1. The refracting portion 433 of the liquid discharge pipe 43 is preferably shaped so as to be refracted with a gentle curved surface. In the embodiment shown in FIG. 2 or 4, the liquid discharge pipe 43 is refracted at an angle of about 30 degrees (an opening angle of about 150 degrees) at a position of about 68 mm from the tip of the one end 431.

  2 or 3, the joint 45 includes a joint body 45a and a cap nut 45b whose center is opened. A conical step is formed at the other end 432 of the liquid discharge pipe 43, and sealing can be achieved by fastening the cap nut 45b to the joint body 45a.

  2 or 3, the plug main body 41 includes a coupling ring 41r, a plug shell 41s, and a seal ring 41a. The coupling ring 41r can be screwed onto the outer periphery of the mouth portion 11. The plug shell 41s is rotatably connected to the coupling ring 41r.

  In FIG. 2 or FIG. 3, the plug shell 41s has a flange formed on one end side, and is difficult to separate from the opening on the other end side of the coupling ring 41r. The plug shell 41s is inserted and incorporated from the opening on one end side of the coupling ring 41r, but is blocked by the seal ring 41a and is difficult to be removed from the opening on one end side of the coupling ring 41r.

  2 or 3, the seal ring 41 a is held inside the coupling ring 41 r and is in close contact with the end surface of the mouth portion 11 to seal the ventilation at the boundary between the coupling ring 41 r and the plug shell 41 s. The plug shell 41s is provided with a ventilation means 42 and a first joint 44 made of synthetic resin for detachably fixing the liquid discharge pipe 43.

  2 or 3, a commercially available straight type holder can be used for the first joint 44. The first joint 44 can hold the liquid discharge pipe 43 slidably on the plug body 41. The first joint 44 can detachably fix the liquid discharge pipe 43.

  2 or 3, the first joint 44 includes a bolt-shaped hollow main body 44a and a cap nut 44b having an open center. The bolt-shaped main body 44a can hold the liquid discharge pipe 43 in a slidable manner, has a male screw portion 441 that can be fastened to the plug shell 41s on one end side, and has a conical sleeve 442 on the other end side. When the cap nut 44 b is fastened to the other end of the bolt-shaped main body 44 a, the sleeve 442 is reduced in diameter, and the liquid discharge pipe 43 can be fixed to the first joint 44. When the cap nut 44b is opened from the other end side of the bolt-shaped main body 44a, the sleeve 442 is restored, and the liquid discharge pipe 43 can be pulled out.

  As described above, the first joint 44 can be used to adjust the position so that one end of the liquid discharge pipe 43 reaches the edge of the bottom surface of the inner container 1. Then, the compressed fluid is pressurized to the air layer of the inner container 1 through the ventilation means 42, whereby the liquid chemical is supplied from the terminal opening 43 a and the liquid chemical is discharged from the other end of the liquid discharge pipe 43. The

  Next, the configuration of the tilting table provided in the liquid medicine distribution device according to the present invention will be described. In FIG. 8, the tilting table 50 according to the first embodiment includes a main body 51 and a pair of fall prevention poles 52 and 52. The main body 51 forms a slope 51a inclined at 12 degrees with respect to a floor surface that is a horizontal plane. The pair of fall prevention poles 52 and 52 are erected on the lower side of the slope 51a.

  In FIG. 8, the main body 51 is made of a metal plate such as a stainless steel plate, and is formed in a substantially trapezoidal box shape in which the four surroundings of the developed metal plate are bent and the opposed surface of the inclined surface 51a is opened. The fall prevention pole 52 is made of a metal round bar such as stainless steel, and an internal thread (not shown) is provided at one end of the fall prevention pole 52. On the other hand, the main body 51 is provided with a hole (not shown) for receiving a screw member such as a bolt. And the fall prevention pole 52 is being fixed to the main body 51 with this volt | bolt (not shown).

  In FIG. 9, the tilting table 60 according to the second embodiment includes a main body 61 and a pair of fall prevention poles 62 and 62. The main body 61 forms a slope 61a that is inclined at 30 degrees with respect to a floor surface that is a horizontal plane. The pair of fall prevention poles 62 and 62 are erected on the lower side of the slope 61a.

  In FIG. 9, a main body 61 is made of a metal plate such as a stainless steel plate, and is formed in a triangular box shape in which the three circumferences of the developed metal plate are bent and the opposed surface of the inclined surface 61a is opened. The fall prevention pole 62 is made of a metal round bar such as stainless steel, and an internal thread (not shown) is provided at one end of the fall prevention pole 62. On the other hand, the main body 61 is provided with a hole (not shown) for receiving a screw member such as a bolt. And the fall prevention pole 62 is being fixed to the main body 61 with this volt | bolt (not shown).

  Next, the operation of the liquid chemical pail can provided in the liquid chemical dispensing apparatus according to the present invention will be described.

  In the container 10 according to the present invention, the inner container 1 is pressurized with a compressed fluid such as nitrogen, and the liquid chemical is discharged. The outer container 2 has rigidity so as to prevent deformation of the inner container 1 against the internal pressure applied to the inner container 1. Having rigidity may include that the outer container 2 is formed of a rigid metal plate, and the outer container 2 has a mechanical structure so that the inner container 1 does not deform due to expansion or the like. Can be included.

For example, the container 10 shown in FIG. 1 is a pail can with a rated capacity of 20 liters and a proof stress of 0.5 kgf / cm ² . The inner container 1 may be formed of a polyolefin such as polyethylene (PE) or polypropylene (PP) and can contain a liquid chemical containing a photosensitive resin composition.

  The liquid chemical pail can according to the present invention is a pail can whose outer container is formed from a thin steel plate, and is easier to manufacture than a canister can formed from a thick steel plate. There is an advantage that it can be manufactured inexpensively.

  The liquid chemical pail can according to the present invention is not configured to be transported by incorporating a coupling with a liquid discharge tube, and is configured to include a liquid discharge tube on the dispenser side. It is also possible to reduce the manufacturing cost.

  Further, the liquid chemical pail can according to the present invention is a one-way type container that is discarded after the liquid chemical is discharged, but it does not require time for cleaning the liquid discharge tube or refilling the bag into the outer container. There is an advantage that it is economical as a whole compared to a double-foldable container for liquid chemicals.

  Next, the operation of the dispenser provided in the liquid medicine dispensing apparatus according to the present invention will be described.

  As shown in FIG. 2, in the dispenser 40, the first joint 44, the liquid discharge pipe 43, and the second joint 42 a are incorporated in the plug body 41 in advance. A joint 45 is connected to the liquid discharge pipe 43. In this way, the dispenser 40 in which the elements are integrated is inserted into the mouth portion 11 of the container 10 with the liquid discharge pipe 43 at the top (see FIG. 5).

  Next, as shown in FIG. 6, the dispenser 40 can be fixed to the container 10 by rotating the plug body 41 and fastening it to the mouth 11 of the container 10 (see FIG. 5). In the connected state shown in FIG. 7, it is possible to adjust the tip of the liquid discharge pipe 43 so as to contact the edge of the bottom surface of the inner container 1 by loosening the cap nut 44 b (see FIG. 4).

  In FIG. 7, the plug shell 41s (see FIG. 2) can be rotated to an arbitrary angle by loosening the coupling ring 41r (see FIG. 2). In this case, it is preferable to position the angle of the plug shell 41 s so that the cap nut 44 b to which the liquid discharge pipe 43 is fixed is close to the upper end edge of the container 10.

  In FIG. 7, the tube 42c is connected to the second joint 42a, and an inert gas such as nitrogen gas is supplied from the edge of the tube 42c, so that the compressed fluid is applied to the air layer of the inner container 1 through the ventilation means. Pressurized, the liquid chemical is supplied from the terminal opening 43a, and the liquid chemical is discharged from the joint 45 through the liquid discharge pipe 43 (see FIG. 2 or FIG. 4).

  The dispenser according to the present invention has a simple structure including a cylindrical plug body, a venting means, and a refracted liquid discharge pipe, and directly pressurizes a liquid can pail through the venting means provided in the dispenser. Can dispense liquid chemicals.

  In the dispenser according to the present invention, the plug body and the liquid discharge pipe are made of polyolefin so that the quality of the liquid chemical is not affected. Various joints are also made of polyolefin.

  Next, the operation of the liquid discharge pipe and the tilting table provided in the liquid chemical distributor according to the present invention will be described.

  In FIG. 11, an outer container 716 serving as a canister can according to Patent Document 1 has a curved bottom surface protruding outward, and can be assembled so that the liquid discharge tube 722 is positioned at the center of the bottom surface. It is. Therefore, the outer container 716 according to Patent Document 1 is a container excellent in so-called residual liquid characteristics in which liquid chemicals hardly remain inside the container.

  On the other hand, the container 10 to be a pail can shown in FIG. 1 is assembled such that the bottom surface of the inner container 1 and the bottom plate 23 are flat, and the liquid discharge pipe 43 is positioned at the edge of the bottom surface of the inner container 1 ( (See FIG. 4). However, liquid chemicals easily remain inside the container simply by installing the container 10 on the floor. The inner container 1 can easily form a curved surface whose bottom surface is curved outward, but an outer side provided with a plurality of annular zones so as to be partially adhered to the bottom surface of the inner container 1 curved outward. There is also a manufacturing situation that it is difficult to make the container 2.

  Therefore, in the liquid medicine distribution device according to the present invention, the liquid discharge pipe 43 is configured so that the tip reaches the edge of the bottom surface of the inner container 1, and the portion facing the mouth portion 11 using the inclined base is located below. If the container 10 is disposed so as to be inclined, the liquid chemical remaining on the edge of the bottom surface of the inner container 1 can be supplied to the terminal opening 43a of the liquid discharge pipe 43, so that it is difficult to leave the liquid chemical in the container 10. (See FIG. 4).

  In FIG. 10, the container 10 is inclinedly arranged using an inclined table 50 that forms an inclined surface 51a inclined at 12 degrees with respect to a horizontal plane (see FIG. 8). In FIG. 10, it was confirmed that the liquid chemical did not overflow from the mouth portion 11 at the beginning of placing the container 10 at an inclination (see FIG. 2). If the container 10 is disposed at an angle of less than 2 degrees, liquid chemicals are likely to remain inside the container 10. In FIG. 10, the container 10 is formed in a right truncated cone shape.

  In FIG. 11, the container 10 is inclinedly arranged using an inclined table 60 that forms an inclined surface 61a inclined at 30 degrees with respect to a horizontal plane (see FIG. 9). In FIG. 11, it was confirmed that when the container 10 is disposed at an angle exceeding 30 degrees, the liquid chemical may overflow from the mouth portion 11 at the beginning of the inclined arrangement (see FIG. 2). In addition, in FIG. 11, the container 10 is formed in the right cylinder shape.

  Next, for example, as in the liquid discharge tube 722 shown in FIG. 12, the remaining liquid in the container 10 connected to the conventional liquid discharge pipe extending straight and the container 10 connected to the liquid discharge pipe 43 according to the present invention are used. The results of a comparative investigation with the remaining liquid will be described.

In the investigation of the residual liquid characteristics described below, the pressure applied to the air layer of the inner container 1 is set to “0.5” kgf / cm ² (49 kPa), and general tap water is used instead of liquid chemicals in the container. 10 and the amount of liquid remaining when bubbles were first detected from the other end of the liquid discharge pipe was determined.

  A container 10 connected to a conventional liquid discharge pipe extending straightly was placed on a substantially horizontal floor surface, and the amount of residual liquid was determined (Survey A). Further, the tip of the liquid discharge pipe in the survey A is cut at an angle of about 45 degrees. In Survey A, the residual liquid ranged from 650 to 850 g. Moreover, the amount of residual liquid was calculated | required using the liquid discharge pipe by which the front-end | tip was cut at the gentle angle of about 45 degrees or less on the same conditions as the above (inspection B). In Survey B, the residual liquid was in the range of 300 to 500 g, and the residual liquid characteristics were somewhat improved from the results of Survey A.

  In addition, the container 10 connected to a conventional liquid discharge pipe extending straightly was placed on the inclined table 50 (see FIG. 10), and the remaining liquid amount was obtained (Survey C). Further, the tip of the liquid discharge pipe in the survey C is cut at an angle of about 45 degrees. In Survey C, the maximum amount of residual liquid was 300 g, and the residual liquid characteristics were somewhat improved from the results of Survey B.

  On the other hand, the container 10 to which the refracted liquid discharge pipe 43 according to the present invention was connected was placed on the inclined table 50 (see FIG. 10), and the remaining liquid amount was obtained (Survey D). In Survey D, the maximum amount of residual liquid was 150 g, and the residual liquid characteristics were significantly improved as compared with the results of Survey C.

  The liquid medicine dispensing device according to the invention is configured such that the liquid discharge pipe 43 is configured so that the tip reaches the edge of the bottom surface of the inner container 1 and the container 10 is inclined by using an inclined table. It was demonstrated that the liquid chemical remaining at the edge of the bottom surface can be supplied to the terminal opening 43a of the liquid discharge pipe 43, so that the liquid chemical can hardly remain in the container 10.

  The liquid medicine dispensing apparatus according to the present invention includes a liquid chemical pail can and a dispenser connected to the mouth of the pail can. Pail cans for liquid chemicals have a double structure in which a molded inner container made of chemical-resistant synthetic resin is surrounded by a metal outer container, and has an advantage of being easy to manufacture and inexpensive to manufacture. The dispenser has a simple structure including a cylindrical plug body, a venting means, and a liquid discharge pipe, and the liquid chemical is directly pressurized through the venting means provided in the dispenser. Can be distributed.

  Furthermore, the liquid medicine dispensing device according to the present invention is arranged on the edge of the bottom surface of the inner container by tilting the liquid medicine pail can or by tilting the liquid medicine pail can. Since the remaining liquid chemical can be supplied to the terminal opening of the liquid discharge pipe, it is difficult for the liquid chemical to remain in the pail can for liquid chemical. That is, it is possible to provide a liquid chemical distribution device having excellent residual liquid characteristics.

1 is a perspective external view showing an embodiment of a liquid medicine pail can provided in a liquid medicine dispensing apparatus according to the present invention. It is a front view which shows one Embodiment of the dispenser connected to the pail can for liquid medicine by the said embodiment, and has shown the principal part in the cross section. FIG. 4 is an exploded view of the dispenser according to the embodiment, and is a state diagram in which a pail can for liquid medicine is connected. FIG. 2 is a longitudinal sectional view of a liquid chemical pail can and a dispenser according to the embodiment, wherein the dispenser is connected to the liquid chemical pail can. It is a perspective external view which shows the state just before connecting the dispenser by the said embodiment to the pail can for liquid chemicals. It is a perspective appearance figure which shows the state which fastens the plug main body of the dispenser by the said embodiment to the opening | mouth part of the pail can for liquid chemicals. It is a perspective external view which shows the state which connected the dispenser by the said embodiment to the pail can for liquid chemicals. FIG. 3 is a perspective external view of a tilting table according to a first example in which a liquid chemical pail can according to the embodiment is inclined at 12 degrees. FIG. 6 is a perspective external view of a tilting table according to a second example in which a liquid chemical pail can according to the embodiment is inclined at 30 degrees. FIG. 3 is a perspective external view in which a liquid chemical pail can is disposed on the tilt table according to the first embodiment. FIG. 6 is a perspective external view in which a liquid chemical pail can is disposed on an inclined table according to the second embodiment. It is a front view of the distribution apparatus of the liquid chemical | medical agent which consists of a container and dispenser by a prior art, and makes the principal part the cross section.

Explanation of symbols

1 inner container 2 outer container 10 container (pail can for liquid medicine)
11 mouth part 40 dispenser 41 plug body 42 ventilation means 42b opening 43 liquid discharge pipe 43a terminal opening 431 one end (one end of liquid discharge pipe)
432 The other end (the other end of the liquid discharge pipe)
433 Refraction part (refractive part of liquid discharge pipe)

Claims (8)

Pail can for liquid chemicals comprising a cylindrical inner container made of a chemical-resistant synthetic resin having a mouth opening to allow injection of liquid chemicals, and a metal outer container constituting the outer shell of the inner container A dispenser connected to the mouth of the pail can, and a liquid chemical dispensing device comprising:
The dispenser has a cylindrical plug body that is fastened to the mouth so as to be sealed, and an opening that penetrates from the outside of the plug body toward the mouth, and allows compressed fluid to pass through the inside of the inner container. A venting means, one end extending toward the bottom surface of the inner container, the other end protruding from the plug body, and a liquid discharge pipe that is sealably attached to the plug body,
The liquid discharge pipe has a terminal opening that is refracted from the middle of one end and reaches the edge of the bottom surface of the inner container,
Distributing device for liquid medicine in which liquid medicine is supplied from the terminal opening and discharged from the other end of the liquid discharge pipe by pressurizing the compressed fluid to the air layer of the inner container through the ventilation means .   The mouth is arranged near the periphery of the inner container, the terminal opening of the liquid discharge pipe is made to reach the edge of the bottom surface of the inner container facing the mouth, and the part facing the mouth is downward The liquid medicine distribution device according to claim 1, wherein the pail cans are arranged so as to be inclined.   The liquid medicine distribution device according to claim 2, further comprising a tilting table including a main body forming a slope and a pair of fall prevention poles standing on a lower side of the slope, wherein the pail can is disposed at a tilt.   The liquid medicine dispensing apparatus according to claim 2 or 3, wherein the pail can is disposed at an inclination of 2 degrees or more and 30 degrees or less with respect to a horizontal plane. Pail can for liquid chemicals comprising a cylindrical inner container made of a chemical-resistant synthetic resin having a mouth opening to allow injection of liquid chemicals, and a metal outer container constituting the outer shell of the inner container And a dispenser connected to the mouth of the pail, and a method of dispensing the liquid chemical,
The dispenser has a cylindrical plug body that is fastened to the mouth so as to be sealed, and an opening that penetrates from the outside of the plug body toward the mouth, and allows compressed fluid to pass through the inside of the inner container. A venting means, one end extending toward the bottom surface of the inner container, the other end protruding from the plug body, and a liquid discharge pipe that is sealably attached to the plug body,
The liquid discharge pipe has a terminal opening that is refracted from the middle of one end and reaches the edge of the bottom surface of the inner container,
Distributing method of liquid medicine in which liquid chemical is supplied from the terminal opening and discharged from the other end of the liquid discharge pipe by pressurizing the compressed fluid to the air layer of the inner container through the ventilation means .   The mouth is arranged near the periphery of the inner container, the terminal opening of the liquid discharge pipe is made to reach the edge of the bottom surface of the inner container facing the mouth, and the part facing the mouth is downward 6. The method for dispensing liquid chemicals according to claim 5, wherein the pail cans are arranged so as to be inclined.   The liquid medicine dispensing method according to claim 6, wherein the pail can is disposed at an inclination using an inclined table including a main body forming an inclined surface and a pair of fall prevention poles erected on the lower side of the inclined surface.   The liquid pail distribution method according to claim 6 or 7, wherein the pail can is inclined at an angle of 2 degrees or more and 30 degrees or less with respect to a horizontal plane.

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