JP2005187058A - Discharging device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent direct contact of external oxygen or various germs with contents by providing a pump device with an inner container that stores the contents (fluid) and is shrinkable. <P>SOLUTION: The discharging device comprises the shrinkable inner container 2 storing a fluid, an outer container 3 storing the inner container 2, and a pump device 4 disposed on the mouth 12 of the outer container 3 and connecting the mouth 6 of the inner container 2 to an intake port 37. The discharging side of the pump device 4 is provided with a check valve 59. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a dispenser that dispenses a fluid in a container via a pump device.

A conventional pouring machine includes a container main body that contains a liquid and a pump device provided at the mouth of the container main body that contains the liquid, and a pouring device is provided at the discharge end of the piston portion of the pump device. Some have a check valve that prevents liquid leakage when it falls over. This dispenser allows outside air to flow into the container body from the mouth of the container body, thereby preventing the container body from being dented against a decrease in the liquid volume inside the container body (for example, patents). Reference 1).
JP 2003-118760 A (Claim 1, page 5, FIG. 1)

In the conventional pouring machine, since outside air (air) and various germs flow into the container body, for example, when the contents are food, etc., an antioxidant or a preservative is used for long-term storage. It is necessary to add. Producing products with the addition of antioxidants, preservatives, etc. in this way is an effective means for extending the life of the products, improving the quality stability of the products, and contributing to industrial development. On the other hand, on the other hand, there is an increasing demand in recent years to use foodstuffs etc. as natural as possible without adding such antioxidants and preservatives.
The present invention has been made in view of such circumstances, and by providing the pump device with an inner container that contains the contents (fluid) and can be shrunk, oxygen or bacteria from outside air can be added to the contents. The purpose is to provide a dispenser that is not directly touched.

  Another object of the present invention is to enable the check valve of the dispenser to be reliably sealed by the close contact between the plug member and the elastic membrane body.

In order to achieve the above object, the present invention has taken the following technical means.
First, the dispenser 1 is provided in a shrinkable inner container 2 for accommodating a fluid, an outer container 3 for accommodating the inner container 2, and a mouth portion 12 of the outer container 3. And a pump device 4 that connects the mouth portion 6 of the container 2 to the suction port 37, and a check valve 59 is provided on the discharge side of the pump device 4.
According to this, since the inner container 2 is housed and supported in the outer container 3, it can be used in a stable posture even when the inner container 2 contracts due to the discharge of the fluid. Therefore, there is no need to introduce air into the container to prevent the container from being dented as in the prior art, and the check valve 59 is provided in the pump device 4, so that the pump device 4 is not used except when the inner container 2 is replaced. Inside, no external air or germs flow into the inner container 2, which can significantly reduce the amount of preservatives or the like, and the fluid that is the contents can be stored and used for a long time without being used.

Second, the inner container 2 is composed of a shrinkable soft bag.
According to this, the inner container 2 can be easily manufactured by, for example, blow molding. Moreover, since the inner container 2 can be formed with a small amount of packaging material while minimizing the thickness of the inner container 2, the inner container 2 that is friendly to the global environment can be realized.
Third, the inner container 2 is provided with passage forming means 69 for forming a fluid flow passage 68 communicating with the mouth portion 6 between the walls of the inner container 2 at the end of contraction.
According to this, the inner surfaces of the inner walls 2 of the inner container 2 are in close contact with each other at the end of contraction, and the fluid passage is not cut off, and the fluid can be discharged to the end.

4thly, the said channel | path formation means 69 is the protrusion part 10 extended from the mouth part 6 vicinity of the inner container 2 to the bottom part side, It is characterized by the above-mentioned.
According to this, the flow path 68 of the fluid communicated with the mouth portion 6 can be formed around the ridge portion 10 by the ridge portion 10 coming into contact with the opposing side wall, and the fluid for discharging the fluid to the end. The passage forming means 69 can be formed easily and easily.
Fifth, the suction port 37 of the pump device 4 has a suction port member 42 that pierces the seal member 9 of the mouth portion 6 of the inner container 2 and introduces a fluid.

According to this, the inner container 2 can be exchanged and the outer container 3 and the pump device 4 can be used continuously, and the inner container 2 can be completely sealed even after the exchange.
Sixth, the outer container 3 has an upper structure 13 having a mouth portion 12 to which the pump device 4 is attached, and a lower structure that is detachably attached to the lower part of the upper structure 13 and accommodates the inner container 2. 16.
According to this, the inner container 2 can be easily stored in the outer container 3.
Seventhly, the check valve 59 is disposed in the elastic film body 61 and an elastic film body 61 provided in the discharge portion 53 of the pump device 4 and having a discharge port 60 for discharging a fluid. The plug member 62 is capable of closing the flow of the fluid, and the plug member 62 has a spherical seal surface 64 to which the elastic film body 61 is elastically adhered.

According to this, the sealing can be surely performed by the close contact of the spherical sealing surface 64 between the elastic film body 61 and the plug member 62.
Eighth, the elastic film body 61 is characterized in that an annular projection 67 is provided for sealing in close contact with the plug member 62.
According to this, the double seal structure of the first seal by the close contact of the spherical sealing surface 64 of the elastic film body 61 and the plug member 62 and the second seal by the close contact of the annular protrusion 67 and the plug member 62. A reliable seal can be realized.

  According to the present invention, the contents (fluid) are accommodated in the pump device and the shrinkable inner container is provided, so that the contents can be prevented from directly touching oxygen or germs from the outside air.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 and 2, the dispenser 1 contains a shrinkable inner container 2 that contains contents (hereinafter referred to as fluid) such as fluid food, cosmetics, and pharmaceuticals, and the inner container 2. A self-supporting outer container 3 and a pump device 4 for sucking out the fluid of the inner container 2 and discharging it to the outside.
The inner container 2 is a so-called soft bag made of a synthetic resin and formed into a thin film, and includes a bag-shaped container body 5 and a mouth 6 formed on the top of the container body 5. 6 is closed by a plug member 7. The plug member 7 has a cylindrical member 8 provided with a male threaded portion 8a on the outer surface and a cylindrical sealing member 9 attached to the inner surface of the cylindrical member 8. The cylindrical member 8 is welded to the inner container 2 by welding or the like. The fluid is sealed in the inner container 2 by being integrated with the mouth portion 6 and being closed with the stopper member 7.

On the inner surface of the inner container 2, an inwardly projecting ridge portion 10 is provided, and this ridge portion 10 extends continuously from the position near the mouth portion 6 of the container body 5 to the bottom side. Yes.
The outer container 3 can be made of synthetic resin, metal or ceramics, and is a container that can be used repeatedly. The outer container 3 is composed of an upper structure 13 having a mouth part 12 and a lower structure 16 constituting a body part 14 and a bottom part 15 and has a vertically divided structure. The upper structure 13 is provided with a mouth portion 12 to which the pump device 4 is attached at the upper portion thereof, and the lower portion is formed in a cylindrical shape having a downwardly expanding shape. The mouth portion 12 is formed in a cylindrical shape, and a male screw portion 18 is formed on the outer peripheral surface. A female threaded portion 19 is formed on the lower inner circumferential surface of the upper structural body 13, and a male threaded portion 20 is formed on the upper inner circumferential surface of the lower structural body 16. The female threaded portion 19 of the upper structural body 13 is connected to the lower structural body. The outer container 3 is configured by screwing into the 16 male screw portions 20 and mounting the lower structure 16 on the upper structure 13.

Thus, since the outer container 3 is configured so that the upper structure 13 and the lower structure 16 are detachable, when the inner container 2 is accommodated or exchanged, the upper container 13 can be removed by removing the upper structure 13. The inner container 2 can be easily stored in the structural body 16.
The pump device 4 includes an attachment member 22 for attachment to the outer container 3, a cylinder member 23, a piston 24 that can slide in the cylinder member 23, a pushing member 25 that pushes the piston 24, And a spring member 26 that urges the member 25 upward.
The attachment member 22 includes a guide member 28 that guides the pushing member 25 and the spring member 26 at the upper part, and an attachment part 29 for attachment to the mouth part 12 of the outer container 3 at the lower part. The guide portion 28 includes a large-diameter cylindrical portion 30 and a small-diameter cylindrical portion 31 provided concentrically, and a hole 32 penetrating in the cylindrical center direction is formed in the small-diameter cylindrical portion 31. The attachment portion 29 has a cylindrical shape with an opening at the bottom, and an internal thread portion 34 is formed on the inner peripheral surface thereof, and is screwed onto the external thread portion 18 of the mouth portion 12 of the outer container 3.

The cylinder member 23 has a cylindrical body portion 36, a suction port 37 for sucking the fluid of the inner container 2 is formed in the lower portion of the body portion 36, and a circular flange is formed in the upper portion of the body portion 36. A portion 38 is formed. As shown in FIGS. 1 and 2, the flange portion 38 is sandwiched between the upper surface of the mouth portion 12 of the outer container 3 and the mounting member 22, so that the cylinder member 23 is attached to the mouth portion 12 of the outer container 3. It is fixed to.
A check valve 39 is provided in the body portion 36 of the cylinder member 23. The check valve 39 only sucks and flows the fluid into the body portion 36 in accordance with the vertical movement of the piston 24. Further, a mounting portion 40 that is attached to the mouth portion 6 of the inner container 2 is provided at the inlet tip portion of the cylinder member 23. The attachment portion 40 has a cylindrical shape with an opening at the bottom, and has an internal thread portion 41 formed on the inner peripheral surface. The external thread portion 8 a provided on the plug member 7 of the mouth portion 6 is connected to the internal thread portion 41. The inner container 2 is attached to the pump device 4 by screwing into the pump device 4.

A suction port member 42 for forming a suction port 37 of the cylinder member 23 is attached to the mounting portion 40. The suction port member 42 has a protrusion 43 having a pointed shape and a cavity formed inside, and a circular flange 44 formed on the proximal end side of the protrusion 43. The cylinder member 23 is fitted into the mounting portion 40 via packing. The flange portion 44 may be fixed to the tip portion of the cylinder member 23 by means such as welding.
A fluid inflow hole 45 is formed in the middle of the protrusion 43, and the inflow hole 45 pierces (pierces) the protrusion 43 into the seal member 9 of the mouth 6 of the inner container 2. Accordingly, the fluid can be sucked by being disposed in the inner container 2. By making the suction port member 42 piercable through the seal member 9 in this way, the inner container 2 can be easily attached to or replaced with the suction port 37 of the pump device 4, and the inner container 2 is a pump. The fluid can be sealed and stored so as not to come into contact with external air or germs until just before being attached to the device 4.

In the center of the flange portion 44, an introduction port 46 for introducing the fluid sucked into the protrusion 43 from the inflow hole 45 into the body portion 36 of the cylinder member 23 is formed. The check valve 39 controls the flow of the fluid sucked from the inflow hole 45 by closing and releasing the introduction port 46 according to the movement of the push member 25.
The piston 24 is made of synthetic resin, has a cylindrical shape that is fitted into the body portion 36 of the cylinder member 23, and a plurality of circular ribs 48 are formed on the outer peripheral surface. A through hole 49 is formed in the piston 24 along the cylinder core direction. A concave portion 50 is formed in the middle of the wall surface of the through hole 49 along the circumferential direction.

The pusher member 25 has a head 51 for pressing with a finger, and a downwardly projecting rod portion 52 is formed at the lower portion of the head 51. A discharge portion 53 that has a fluid passage 54 and discharges the sucked fluid is formed.
The rod portion 52 is formed in a cylindrical shape and is inserted into the hole 32 of the small diameter cylindrical portion 31 of the mounting member 22. A fluid passage 55 is formed inside the rod portion 52, and the passage 55 communicates with the passage 54 of the discharge portion 53.
A protrusion 56 along the circumferential direction is formed on the outer surface of the distal end portion of the rod portion 52, and this distal end portion is inserted into the through hole 49 of the piston 24 to protrude into the recess 50 on the wall surface of the through hole 49. The piston 24 is attached to the rod portion 52 by fitting the portion 56. In addition, a stopper member 57 that prevents the piston 24 from coming off the rod portion 52 is provided at the inlet tip of the rod portion 52.

The spring member 26 exemplifies a coil spring, the lower part of which is provided in a recess between the large diameter cylindrical part 30 and the small diameter cylindrical part 31 of the mounting member 22, and the upper end of the spring member 26 is the pushing member 25. The pushing member 25 is pushed upward by abutting against the lower surface of the head 51.
The discharge part 53 has a cylindrical shape formed so as to protrude sideways from the head part 51, and a check valve for preventing a backflow of discharged fluid, external air, bacteria, etc. at the tip of the discharge part 53. 59 is provided.
1 to 4, the check valve 59 is provided at the distal end of the discharge portion 53 and has an elastic film body 61 in which a discharge port 60 is formed. The check valve 59 is disposed in the elastic film body 61 and the flow of the fluid. And a plug member 62 that can be closed.

The elastic film body 61 is made of a thin film and is formed in a sack shape (bag shape), its tip portion 61a is formed in a substantially hemispherical dome shape, and its body portion (midway portion) 61b is formed in a cylindrical shape. A circular collar portion 61c for attaching to the discharge portion 53 is formed at the base portion.
The elastic film body 61 is fixed to the discharge part 53 via the attachment member 63. The attachment member 63 has a cylindrical shape and has an internal thread portion on the inner peripheral surface, and the inner top surface presses the flange portion 61 c of the elastic film body 61 against the distal end surface of the discharge portion 53. On the other hand, a male thread portion is formed on the outer surface of the distal end portion of the discharge portion 53. By attaching the attachment member 63 to the discharge portion 53, the collar portion 61c of the elastic film body 61 is attached to the attachment member 63 and the discharge portion. 53 and fixed between.

The discharge port 60 formed at the distal end portion 61a of the elastic film body 61 is formed in a single-letter (may be a ten-letter) notch shape (slit shape) or a duck bill shape, and the edges are in close contact with each other. It has become.
The material of the elastic film body 61 is freely selected from rubber, resin, etc. in consideration of physical properties such as viscosity and particle size of the fluid, chemical properties such as pH, appearance, economy, and usability. Can be molded.
For example, rubber elastic body composed of at least one of NR, SBR, BR, NBR, CR, EPM, EPDM, IR, IIR, FKM, VMQ, U, T, CO, ACM, etc., SBS, SIBS , SEBS, SIS, SEPS, SEEPS, TPO, TPU, TPEE, TPAE, TPVC, 1,2-polybutadiene-based thermoplastic elastomer, fluorine-based thermoplastic elastomer, etc., and composites thereof can also be used. is there.

The plug member 62 is provided in the body portion 61b of the elastic film body 61, and is made of, for example, a solid spherical body formed of hard resin or the like. The diameter of the plug member 62 is larger than the inner diameter of the body portion 61 b of the elastic film body 61.
Therefore, when the plug member 62 is provided on the body portion 61 b of the elastic film body 61, the plug member 62 is in close contact with the inner surface of the elastic film body 61, and the body portion 61 b of the elastic film body 61 in contact with the plug member 62 is It is elastically deformed so as to expand outward. The plug member 62 is pressed by an elastic force generated by elastic deformation of the elastic film body 61 and is held in the elastic film body 61.

Since the plug member 62 is a spherical body, the surface thereof is a spherical surface. The plug member 62 is sealed by the elastic film body 61 elastically contacting the spherical surface. Hereinafter, the surface (spherical surface) of the plug member 62 that performs the sealing in this way is referred to as a spherical sealing surface 64, and the seal by this is referred to as a first seal. Since the spherical sealing surface 64 has a spherical shape, a larger sealing area can be secured than in the case of a flat surface.
Since the elastic film body 61 is made of a thin film, the inner surface and the outer surface of the elastic film body 61 are elastically deformed into a spherical shape corresponding to the spherical shape of the spherical sealing surface 64 at the close contact portion. Therefore, in the close contact portion, the sealing by the spherical seal surface 64 and the elastic film body 61 is performed by close contact between the spherical surfaces. As described above, in the close contact between the spherical surfaces, the elastic force of the elastic film body 61 at each contact point in the close contact portion acts in the centripetal direction toward the spherical center of the spherical seal surface 64. That is, at any contact point, a uniform elastic force (elastic restoring force) in the centripetal direction acts, thereby increasing the adhesion and enabling a wide and reliable backflow prevention function to be exhibited. ing.

  In the elastic film body 61, a protruding portion for locking the plug member 62 is provided on the inner surface of the distal end portion 61 a in the vicinity of the discharge port 60, and this protruding portion is provided between the discharge port 60 and the plug member 62. The gap forming means 65 is used to form a gap. A plurality of the protruding gap forming means 65 are provided at intervals along the circumferential direction of the inner surface of the elastic film body 61. In the first embodiment, the number of protrusions that are the gap forming means 65 is four. The protruding gap forming means 65 is provided apart from the discharge port 60, and the plug member 62 locked by the protruding gap forming means 65 is arranged apart from the discharge port 60. A gap 66 is formed between the plug member 62 and the discharge port 60.

By forming the gap 66 in this way, the fluid can be discharged by releasing the seal with a desired pressure without the plug member 62 being in close contact with and blocking the discharge port 60.
On the inner surface of the body 61b of the elastic film body 61, an annular protrusion (seal ring part) that makes a second seal by contacting the plug member 62, separately from the seal by the close contact between the spherical seal surface 64 and the elastic film body 61. ) 67 is provided on the inner surface of the body 61 b of the elastic film body 61. The annular protrusion 67 is provided apart from the discharge port 60, and when the stopper member 62 is provided in the elastic film body 61, the stopper member 62 is held between the protrusion-like gap forming means 65 and the annular protrusion 67. It will be in the state. In other words, the protruding gap forming means 65 and the annular protruding portion 67 regulate the position of the plug member 62.

As described above, in the elastic film body 61, sealing is performed at two locations, that is, a close contact portion between the spherical seal surface 64 and the elastic film body 61 and a contact portion between the plug member 62 (spherical seal surface 64) and the annular protrusion 67. It has a double seal structure. With such a double seal structure, a reliable and sufficient backflow prevention function can be exhibited.
Hereinafter, an operation until the pump device 4 sucks and discharges the fluid in the inner container 2 will be described.
In FIG. 1, the dispenser 1 is in a standby state so that the fluid can be discharged just by pressing the head 51, and in this standby state, the piston 24 is positioned at the top of the cylinder member 23, The body 36 of the cylinder member 23 below the piston 24 is filled with the fluid sucked from the inner container 2. In this standby state, the check valve 39 in the body portion 36 is in a state in which the introduction port 46 is closed.

When a finger or the like is applied to the head 51 from this standby state and the pushing member 25 is pushed and moved downward, the piston 24 provided on the rod portion 52 of the pushing member 25 moves downward as shown in FIG. Then, pressure is applied to the fluid in the body portion 36. Then, as the piston 24 moves downward as described above, pressure is applied to the fluid in the body portion 36, and this fluid causes the fluid to flow from the passage 55 of the rod portion 52 to the check valve 59 side of the discharge portion 53. To flow.
In the elastic film body 61 of the check valve 59, the plug member 62 receives pressure by the fluid, and the elastic film body 61 receives this pressure and elastically deforms so as to be stretched forward. When the elastic film body 61 is elastically deformed in this manner, the plug member 62 is separated from the annular protrusion 67 and the seal between the plug member 62 and the annular protrusion 67 is released.

With this release, the fluid passes over the annular protrusion 67 and flows into the seal portion (contact portion) between the spherical seal surface 64 and the elastic film body 61. Then, the fluid is elastically deformed in an inflated form so as to spread the elastic film body 61 portion in the close contact portion outward so that the seal portion between the spherical sealing surface 64 and the elastic film body 61 is released. Into the gap 66 on the discharge port 60 side. Finally, the gap 66 is filled with the fluid, and as shown in FIG. 4, the fluid spreads the discharge port 60 in the extrusion direction and is discharged to the outside. Thus, the dispenser 1 pours the fluid to the outside. It is.
When the finger or the like that has pushed the head 51 is released, the pushing member 25 is pushed upward by the urging force of the spring member 26 to move. In conjunction with this, the piston 24 moves upward, whereby a negative pressure is generated in the body portion 36 and the check valve 39 moves upward to release the closing of the introduction port 46, and the flow in the inner container 2. The body is sucked from the inflow hole 45 and introduced into the trunk portion 36 from the introduction port 46. When the piston 24 moves to the uppermost portion of the body portion 36, the standby state described above is restored.

Since the inner container 2 has flexibility and can be contracted, the volume is decreased and contracted each time the fluid is sucked out as described above. At the end of the contraction when the contraction has progressed and the remaining amount of fluid has been reduced, the protrusion 10 formed on the inner surface of the inner container 2 is in contact with the opposing inner surface as shown by the two-dot chain line in FIG. It becomes. As a result, a fluid flow path 68 is formed in the vicinity of the protruding portion 10 from the bottom side of the inner container 2 to the mouth portion 6.
In this way, the protrusion 10 serves as a passage forming means 69 for forming a fluid flow passage 68 between the walls of the container at the end of contraction of the inner container 2. By this passage forming means 69, it is prevented that the inner surfaces are in close contact with each other at the end of contraction of the inner container 2 and the fluid remains in the inner container 2, and the remaining amount of the fluid is reduced as much as possible and used until the end. be able to.

In order to prevent the inside of the outer container 3 from becoming a negative pressure due to the contraction of the inner container 2 as described above, the gaps or mouth portions 12 of the screw portions 19 and 20 of the upper structure 13 and the lower structure 16 of the outer container 3 are used. In this way, air (outside air) can be introduced into the outer container 3, so that the outer container 3 is always kept in a shape capable of supporting itself without deformation due to negative pressure.
According to the dispenser 1 having the above-described configuration, the inner container 2 is configured to be contractible and deforms in accordance with the negative pressure generated each time the pump device 4 sucks out the fluid. Since it is supported by the container 3, it can always be used in a stable posture. Further, since a check valve 59 is provided on the discharge side of the pump device 4, external air, germs and the like do not enter the pump device 4 and the inner container 2, and an antioxidant, preservative, etc. Can be stored and used for a long time without adding to the fluid. Moreover, since the inner container 2 is a thin-film soft bag, it is possible to reduce the amount of packaging material necessary for molding.

In addition, this invention is not restricted to said embodiment, The following changes are possible.
For example, a plurality of ridges 10 constituting the passage forming means may be provided in the inner container 2. Moreover, although this protrusion part 10 illustrated what was formed continuously from the mouth part 6 vicinity of the inner container 2 to the bottom part, you may form it intermittently from the mouth part 6 vicinity to the bottom part. As the plug member 62 of the check valve 59, a member in which a spherical surface is formed in a contact portion with the elastic film body 61 such as an ellipsoid or a rugby ball can be used.

It is a longitudinal cross-sectional view which shows the standby state of an extraction machine. It is a longitudinal cross-sectional view which shows a state when an extraction machine pours out a fluid. It is sectional drawing of a non-return valve. It is sectional drawing which shows the non-return valve which discharges a fluid. It is an AA arrow line sectional view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pouring machine 2 Inner container 3 Outer container 4 Pump apparatus 6 Inner container port 9 Sealing member 10 Projection part 12 Outer container port 13 Upper component 16 Lower component 37 Suction port 42 Suction port member 53 Discharge unit 59 Check valve 60 Discharge port 61 Elastic film body 62 Plug member 64 Spherical seal surface 67 Annular projection 68 Flow passage 69 Passage formation means

Claims (8)

  A shrinkable inner container (2) for accommodating a fluid, an outer container (3) for accommodating the inner container (2), and a mouth portion (12) of the outer container (3). A pump device (4) for connecting the mouth (6) of the vessel (2) to the suction port (37), and a check valve (59) is provided on the discharge side of the pump device (4). Characteristic pouring machine.   The dispenser according to claim 1, characterized in that the inner container (2) comprises a shrinkable soft bag.   A passage forming means (69) for forming a fluid flow passage (68) communicating with the mouth (6) between the walls of the inner container (2) at the end of contraction is provided in the inner container (2). The dispensing machine according to claim 1 or 2, characterized in that   4. The pouring according to claim 3, wherein the passage forming means (69) is a protrusion (10) extending from the vicinity of the mouth (6) of the inner container (2) to the bottom side. Machine.   The suction port (37) of the pump device (4) is provided with a suction port member (42) that pierces the seal member (9) of the mouth (6) of the inner container (2) and introduces the fluid. The extraction machine according to any one of claims 1 to 4.   The outer container (3) is detachably attached to an upper structure (13) having a mouth part (12) to which a pump device (4) is attached, and a lower part of the upper structure (13). The pouring machine according to any one of claims 1 to 5, further comprising a lower structure (16) for housing (2).   The check valve (59) is provided in the discharge part (53) of the pump device (4) and has an elastic film body (61) having a discharge port (60) for discharging a fluid, and an elastic film body. (61) is provided with a plug member (62) that can close the flow of the fluid, and the plug member (62) has a spherical sealing surface (64) to which the elastic film body (61) is elastically adhered. The pouring machine according to any one of claims 1 to 6, further comprising:   8. The pouring machine according to claim 7, wherein an annular protrusion (67) is provided in the elastic membrane body (61) for sealing in close contact with the plug member (62).

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