JP3530249B2 - Method and apparatus for filling elastic containers - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for filling an elastic container, which is an industrial liquid container product such as a beverage field, a chemical drug container, and a petroleum product container, with a filling liquid. And its filling device.

[0002]

2. Description of the Prior Art For filling a filling liquid into a container such as a bottle,
As disclosed in JP-A-1-308796, the mouth of the container is held to fill the liquid, or JP-A-3-2828.
As disclosed in Japanese Patent No. 9435, there is used a filling device that fills a container with a liquid without applying an external force and then applies an external force to fill the liquid surface while pushing it up.

For filling such a filling liquid, conventionally, a filling valve is used to fill the filling liquid while replacing the filling liquid from the filling tank with the air in the container. Specifically, the filling liquid 3 is filled in the container 2 using the filling valve 1 as shown in FIG.

That is, to explain the structure of the filling valve 1, 5 is a filling tank, and 6 is a fixed cylinder attached to the lower surface of the filling tank 5 penetrating the bottom wall of the tank 5. A locking ring 7 is screwed into the tip of the fixed barrel 6 having a smaller diameter at the stepped portion 6a.

Inside the fixed cylinder 6, there are stepped intermediate portions 8a,
An outer cylinder 8 having a smaller diameter is slidably inserted in order with the tip portion 8b. The tip side of the outer cylinder 8 penetrates the locking ring 7 and projects downward. The intermediate portion 8a, the step portion 8c, and the opening edge of the locking ring 7 are set to have a diameter such that the step portion 8c locks with the opening edge of the locking ring 7.

A support ring 10 having a flange portion 9 on the outer peripheral portion is fitted and fixed to the step portion at the boundary between the intermediate portion 8a and the tip portion 8b. Specifically, the outer cylinder 8 and the support ring 10 are coupled via a shaft 11 inserted between the outer cylinder 8 and the support ring 10. Reference numeral 12 denotes an O-ring provided on the outer peripheral surface of the support ring 10 for preventing the shaft 11 from coming off.

A coil spring 13 is passed between the end surface of the support ring 10 and the stepped portion 6a of the fixed barrel 6 in a compressed state to urge the support ring 10 downward. As a result, the opening edge of the locking ring 7 is used as a stopper at the lower limit position, and the entire outer cylinder is slidable in the vertical direction.

A cap 14 is fitted on the tip of the outer cylinder 8 so as to be movable in the axial direction. At the bottom of the base 14, the container 2
A guide portion 16 having a substantially inverted taper shape for positioning the filling port 15a at the upper part of the container, and a sealing material 17 that is in contact with the opening edge of the filling port 15a and seals (blocks the inside and the outside of the container 2) are provided. There is.

A support ring 10 is provided on the upper portion of the base 14.
Guide tube 1 extending upward along the outer peripheral edge of the flange portion 9 of
8 is fixed by screwing. At the upper end of the guide cylinder 18, there is formed a locking portion 19 that can be engaged with and disengaged from the flange portion 9. The flange portion 9 is used as a stopper at the lower limit position so that the entire cap 14 can move vertically. I have you support it.

As a result, when the filling port 15a of the container 2 is arranged in the mouth setting part 20 composed of the guide portion 16 and the sealing material 17 and the entire container is raised by a device (not shown), the mouthpiece 14 is initially opened. Rises and then coil spring 13
The support ring 10 is pushed up by the mouthpiece 14 against the elastic force of the outer cylinder 8 to raise the outer cylinder 8. In addition,
Reference numeral 21 denotes a cushioning seal material (a cushioning shock when the mouthpiece 14 hits the support ring 10) fitted to the outer cylinder portion in front of the support ring 10.

An air introducing tube 22 made of a thin tube is inserted into the outer cylinder 8. The upper part of the air introduction pipe 22 is fixed to the upper end of the fixed cylinder 6 by a pin 23, and the discharge port 24 at the upper end is connected to a predetermined liquid level Lf of the filling liquid 3 in the filling tank 5.
Is located in the air layer above. Reference numeral 23a denotes a leaf spring that engages with the pin 23 and prevents the pin 23 from coming off.

Further, an air inlet 25 that opens laterally in order and an opening / closing element 26 are provided at the tip of the air introducing pipe 22 that extends downward along the inner surface of the tip 8b of the outer cylinder 8. .

The opening / closing member 26 is composed of a short columnar valve body that can be inserted into the tip portion 8b of the outer cylinder 8, and when the outer cylinder 8 descends until it is positioned by the support ring 10, the outer cylinder is closed. It is set so as to protrude from the tip portion 8b of the outer cylinder 8 when it is accommodated in the tip portion 8b of the outer container 8 and the filling port 15a of the container 2 is set in the mouthpiece 14 to raise the entire container. Due to the behavior of the opening / closing member 26, the liquid outlet 27 and the air inlet 25 configured by the tip opening of the tip portion 8b are closed or the liquid outlet 27 and the air inlet 25 are opened.

In such a filling device, as is known, the filling valve 1 is operated by operating the filling valve 1 when the container 2 is assembled from the closed state in which the outer cylinder 8 is supported by the engagement ring 7.
The filling liquid 3 is filled in the container 2. However, FIG. 4 shows a state in which the filling valve 1 is opened by the container 2.

The operation of the filling device will now be described. It is assumed that the container 2 is positioned immediately below the mouth setting portion 20 and the container 2 is lifted upward from this state by a device (not shown).

Then, first, the filling port 15a is connected to the guide portion 16
While being centered by, the cap 14 is pushed up in close contact with the seal member 17. Then, the ascending ferrule 14 contacts the sealing member 21 and pushes up the outer cylinder 8.

Since the air introduction pipe 22 is fixed to the fixed cylinder 6, the opening / closing member 26 is moved along with the upward displacement of the outer cylinder 8.
Is exposed to open the liquid outlet 27 and the air inlet 25.

Then, the filling liquid flow path 28 formed by the outer cylinder 8 and the fixed cylinder 6 and the return gas flow path 29 formed by the air introduction pipe 22 communicate with each other in the container 2. As a result, the filling liquid 3 in the filling tank 5 enters the fluid inlet 30 formed at the upper end of the fixed cylinder 6, passes through the filling liquid passage 28, and flows into the container 2 from the liquid outlet 27. . Both of the air in the container 2 are the air inlet 25 and the return gas flow path 29.
Through the discharge port 24 to the air layer above the liquid level in the filling tank 5.

Due to the inflow of the filling liquid 3, the filling liquid 3 is filled in the container 2. Then, when the filling is completed,
The container 2 is lowered by a device (not shown).

Then, the outer cylinder 8 also descends accordingly. The lowering of the outer cylinder 8 causes the step portion 8
Continue until c is locked. Then, the opening / closing element 26 is housed in the tip portion of the outer tube 8, and the O-ring 26a provided on the outer peripheral surface of the opening / closing element 26 seals the tip of the outer tube 8 to return to the original state. By such operation of the filling valve 1, a series of filling steps is completed.

[0021]

By the way, in the method of filling the filling liquid 3 into the container 2 from the filling tank 5 under atmospheric pressure, in principle, the filling tank 5 is placed at a position higher than the position where the container 2 is present. It is necessary to provide a level difference in the filling liquid level. That is, so-called hydrohead pressure is required.

This head pressure is also a necessary condition for filling the container 2, and the higher the head pressure, the higher the filling speed. Therefore, conventionally, the filling device has been designed in order to increase the head pressure to a high capacity within the allowable range as much as possible in order to reduce the equipment cost per capacity.

Here, the conventional container 2 is a non-elastic container to which iron, aluminum, glass, plastic or the like is applied as a main material. In the case of this container 2, almost no deformation occurs in any handling.

However, in recent years, the container 2 has been designed to have elasticity as a result of product design, cost reduction, thinning, and the like.

However, when such a container 2 is used,
The filling method as described above has caused various problems as described below. That is, the filling valve 1 is sealed, and the filling liquid 3 is filled through the filling valve 1 with the filling tank 5.
The process of filling the container 2 under pressure from the filling valve 1
When the filling tank 5 and the container 2 are brought into communication with each other by at least one of the filling liquid passage 28 and the return gas passage 29, and the inside of the container 2 is pressurized to atmospheric pressure or higher, the filling liquid flow Even if the path 28 or the return gas flow path 29 is blocked and the filling tank 5 and the container 2 are no longer in communication with each other, the inside of the container 2 is pressurized until the sealing state between the filling valve 1 and the container 2 is released. It becomes a state.

Here, the pressure of the gas (in this case, the atmosphere) remaining in the head of the container 2, that is, the internal pressure of the container 2 is
The filling is completed at the level of the filling liquid 3 in the filling tank 1, that is, under the head pressure.

At this time, if the container 2 has elasticity, the container 2 bulges (deforms) due to its own weight of the filling liquid and the pressure (head pressure). Of course, if the filling liquid 3 has a constant temperature or higher, the above-mentioned equilibrium state is maintained while the deformation amount tends to increase.

Therefore, when the container 2 is lowered and the sealed state between the container 2 and the filling valve 1 is released as a step after the completion of the next filling, the inside of the container is released to the atmospheric pressure, and the container 2 is released. The bulge is restored and returns to a certain shape.

Here, the speed of this restoration depends on the release speed of the container 2 to the atmospheric pressure, but in most cases in the normal filling valve 1, the expansion of the container 2 is restored at a considerable speed. . Obviously, from the viewpoint of the filling process, the time elapsed from the end of filling until the opening of the filling valve 1 is as quick as possible, so if the filling liquid 3 is at a high temperature and has a temperature-dependent container material. Even if is used, the bulge of the container 2 is restored at a considerable speed.

At that time, before the release, the entire filling liquid and the liquid level in the container 2 which is very quiet and has no waviness are simultaneously disturbed by swelling and restoration simultaneously with the release. As a result, the liquid surface of the filling liquid 3 in the container 2 undulates, and the liquid surface further undulates due to the vibration of the bulging and restoring of the container 2, and as a result, the filling liquid 3 jumps in a transient state or fills the container 2 Scatter outside from the mouth 15a (container mouth).

In particular, in the case of a foamable filling liquid such as a liquid containing carbonic acid, pressure is applied to the container in advance in order to suppress foaming, and the container 2 is further pressurized. The behavior is remarkable.

[0032] When such behavior appears, missing a decrease of filling liquid 3, non-health by the liquid spilled, there is a problem that irregularities such as Nyuaji amount, such as must avoid various problems. The present invention has been made in view of the above circumstances, and its purpose is to jump up the filling liquid due to the elastic restoration phenomenon of the container in the filling process, such as scattering of the filling liquid to the outside of the container. An object of the present invention is to provide a method of filling a container having elasticity and an apparatus for the same, which is capable of solving the problem.

[0033]

In order to achieve the above object, the invention as set forth in claim 1 provides a container and a filling tank by one or both of a filling liquid passage and a return gas passage of a filling valve. Doo is filling from the pressurized state to the end of the container communicating, until the seal state between the filling valve and the container is released, restoration capacity equivalent or more capacity of by elasticity of the container this A filling method in which the container is forcibly elastically deformed.

According to the second aspect of the present invention, the container and the filling tank are communicated with each other by one or both of the filling liquid flow path and the return gas flow path of the filling valve to fill the container from a pressurized state. There ended, until the seal state between the filling valve and the container is released, the resilient by restoring capacity equivalent or more capacity of the container this, the deformation means for forcibly resiliently deforming the container It is a filling device provided.

In addition to the above-mentioned object, the invention described in claim 3 uses the deforming means according to claim 2 in order to eliminate a defect effectively and with high reliability. It consists of a squeezing structure capable of squeezing and adjusting the amount of elastic deformation of the container.

In addition to the above object, the invention according to claim 4 is characterized in that a container having elasticity which is generally put into practical use, in particular, a bulge in a lateral direction is larger than an elastic bulge in a longitudinal direction and has elastic recoverability. In order to bring great effect in a high container,
The squeezing structure according to claim 3, wherein a container holder that supports a body of the container is provided on one side facing the container with the container sandwiched therebetween, and the body is elastically deformed in cooperation with the container holder on the other side. There is a rail.

[0037]

According to the first aspect of the invention, the container is released from the filling valve and the inside of the container is released by elastically deforming the moving container in advance from the sealing time in advance of the amount of the restored capacity when the container is automatically restored in advance. Even when the container is released to the atmospheric pressure, at least the restoring force of the container itself can be suppressed so as not to cause the elastic restoration phenomenon when the sealed state is released to the atmospheric pressure.

This avoids giving kinetic energy to the filling liquid in the container. As a result, the container is filled with the filling liquid in a stable state according to the filling process and then released from the filling valve.

According to the second aspect of the present invention, the deforming means forcibly deforms the container that is moving from the sealing time by the amount corresponding to the restoring capacity at the time of automatically restoring. As a result of this modification, as in the case of claim 1, even when the container is released from the filling valve and the inside of the container is released to the atmospheric pressure, the recovery from the sealed state to the atmospheric pressure and the elastic development development do not occur. In addition, at least the restoring force of the container itself is suppressed, and the container is filled with the filling liquid in a stable state and then released from the filling valve.

According to the invention described in claim 3, the squeezing means for squeezing the container is easy and effective for squeezing the container substantially equivalent to the restoring capacity, and is reliable. Is also high. According to the invention described in claim 4, when squeezing a moving container from the outside, a deformed container which is generally put into practical use, in particular, a cross-section of a self-standing container may be circular, square or rectangular. The most effective effect is exhibited in a container having a large elastic swelling in which the lateral bulge is larger than the longitudinal bulge.

[0041]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in FIGS. In the drawings, the same parts as those described in the above-mentioned "Prior Art" are designated by the same reference numerals, and the description thereof will be omitted. In this section, different parts (summary of the invention) will be described.

That is, although the filling tank 5 is only partially shown, it has a cylindrical shape and is rotated about its axis. Although not shown, the filling tank 5 always has a desired constant liquid level LF.
The filling liquid 3 is supplied from the outside so that

A large number of filling valves 1 are provided along the circumferential direction at the outer peripheral edge of the lower surface of the filling tank 5 at predetermined intervals.
A filling line is formed along the filling tank. Since the structure of each filling valve 1 is the same as the structure of the filling valve 1 shown in FIG. 4, the description thereof will be omitted.

Immediately below each filling valve 1, as shown in FIGS. 1 and 3, a container base 40 for mounting the container 2 is provided. Each container base 40 is installed so as to rotate with the filling tank 5 as shown in FIG.

The lower surface of each container base 40 is connected to a lifting shaft 41 of a lifting device (not shown). The lifting device is set so that the lifting operation is performed from the receiving position A for receiving the empty container 2 on the most upstream side of the filling line to the point X advanced by a predetermined amount. As a result, the filling of the container 2 from the point X is started.

The lifting device maintains the ascending operation up to the point Y on the downstream side of the filling line, and then starts descending from the point Y to fill the filled container on the most downstream side of the filling line. It is set so that the container base 40 is returned to the original state up to the delivery position B for delivering 2.

By this setting, a predetermined amount of the filling liquid 3 is supplied into the container 2 and the atmospheric pressure of the container 2 is released. Note that point Z in FIG. 2 indicates the point at which this container 2 is released to atmospheric pressure, and LB in FIG. 1 indicates the final target liquid level height corresponding to the weight of the liquid filled in the container 2. There is.

A container supply line 42 is connected to the receiving position A of the filling line.
From here, the empty containers 2 having elasticity are sequentially placed on the respective container stands 40 (supply).

A container discharge line 43 is connected to the delivery position B so that the filled containers 2 can be sequentially transferred from the container bases 40 and discharged to the outside.
Each container base 40 is provided with a function of holding the mounted container 2 as shown in FIGS. 1 and 3.

Explaining this holding structure, reference numeral 44 denotes a support column projecting from the center of the inwardly facing edge of each container base 40. The column 44 extends upward.
A support piece 45 extends laterally from the upper end of the column 44 toward the neck 15b of the container 2. In addition, the pillar 4
4 and the support piece 45 are integrally fixed together with a fixing screw or the like as appropriate.

An engaging portion 45c for removably engaging the neck portion 15b of the container 2 is provided at the tip of the support piece 45, and the neck portion 15b on the container base 40 is supported. There is.

With the structure for supporting the neck portion 15b, the sealing pressure is generated between the sealing member 17 and the filling port 15a of the container 2 in cooperation with the positioning of the filling valve 1 and the coil spring 13. In addition, the pillar 4
4. The support piece 45 is also for the purpose of preventing buckling of the container 2.

The support column 44 has a container 2 on the container base 40.
A container holder 46 that holds down the body portion 15c is provided in a protruding manner. At the tip of this container holder 46, the mounted container 2
Close to the body of the container (arc shape following the shape of container 2)
The restraining portion 47 having the shape is formed.

With this container holder 46, the container base 4
The container 2 placed on 0 is designed so that it can be handled consistently and reliably and reliably from the supply to the discharge of the filling line.

Needless to say, the container holder 46 is mounted at the most effective position, that is, near the middle position of the container body. On the other hand, a narrowing rail 48 is provided on the filling line so as to extend from the point Y to the point Z.

The squeezing rail 48 is arranged along the filling line so as to face the container holder 46 with the container 2 interposed therebetween. More specifically, the squeezing rail 48 has the filling liquid passage 28 and the return gas passage 2 of the filling valve 1 which are located between Y and Z.
Either one or both of 9 are communicated with the container 2 and the filling tank 5, and substantially from the pressurized state until the end of filling and the opening of the sealed state between the filling valve 1 and the container 2. Provided between the additional regions Y ′ to Z ′,
The narrowing distance (narrowing time) is predetermined by the setting of the narrowing rail 48.

This narrowing rail 48 is used for the container holder 46.
It is a component for squeezing the body portion 15c of the moving container 2 from the lateral direction in cooperation with. As shown in FIG. 1 and FIG. 3, the narrowing rail 48 has a pair of screw shafts 49, 49 projecting outward from the filling line (diameter direction of the filling tank 5 ) on both ends of the fixed frame 50. Support stand 5 provided
1, 51 are penetrated, and both sides of the screw shafts 49, 49 are fixed by tightening two nuts 52, 52, respectively.

With this tightening structure, the narrowing rail 48
The container 2 has a structure capable of adjusting the amount of movement in and out of the container 2, that is, the amount of squeezing from the side surface of the container 2. The narrowing rail 48 forcibly squeezes (elastically deforms) the moving container 2 by an amount equivalent to or greater than the restoring capacity due to the elasticity of the container 2 ( deforming means, narrowing means). Pressed structure).

Next, the operation of the filling device thus constructed will be described together with the filling method. At the receiving position A, the empty empty container 2 supplied from the container supply line 42 to the filling line as indicated by the arrow in FIG. 2 is placed on the container table 40 rotating together with the filling tank 5. To be At the same time, the neck portion 15b of the container 2 is inserted into the engaging portion 45c at the tip of the support piece 45. As a result, the filling port 15 a of the entire container 2 is positioned on the mouth setting unit 20 and is restrained on the container base 40.

Then, a lifting device (not shown)
Is operated to raise the elevating shaft 41 and lift the container base 40 on which the container 2 is placed. Then, first, while the filling port 15a of the container 2 is centered by the guide portion 16, the filling port 15a is brought into close contact with the seal member 17 to push up the cap 14. continue,
The ascending base 14 contacts the sealing member 21 to push up the outer cylinder 8 against the elastic force of the coil spring 13.

When the rise of the outer cylinder 8 reaches the uppermost position, the tip of the outer cylinder 8 which enters the inside through the filling port 15a is
Final target liquid level height LB equivalent to the weight of the liquid filled in the container 2
Is located in. Then, the filling liquid flow path 28 and the return gas flow path 29 open from the same position.

In this opening, the opening / closing member 26 is exposed as the outer cylinder 8 is displaced upward, and the liquid outlet 27 and the air inlet 25 are exposed.
Due to the opening. Then, the filling liquid 3 in the filling tank 5 is filled into the container 2 through the filling liquid passage 28 and the return gas passage 29 communicating with the inside of the container 2.

Specifically, the filling liquid 3 in the filling tank 5
Flows from the fluid inlet 30 located at the upper end of the fixed cylinder 6 into the container 2 through the filling liquid passage 28 and the liquid outlet 27. In both cases, the air in the container 2 passes through the air inlet 25 and the return gas passage 29 and is discharged from the outlet 24 to the air layer above the liquid level in the filling tank 5.

The inflow of the filling liquid 3 is performed from the X position, which is the filling start position, until the container 2 moves to the Y position, and the liquid level LB is reached during this period. In the container 2 at a point as close as possible to the Y position, the liquid level LF, L
There is a difference between B , that is, a pressure state due to the head pressure.

Since the container 2 has elasticity, the body portion 15c of the container 2 at the same position swells from the broken line α state shown in FIG. 1 to the broken line β state ( Transformation)
Cause

When the inflow of the filling liquid 3 is completed, a lifting device (not shown) is operated from the Y position, and this time the lifting shaft 41 is lowered. Then, the process in which the filling valve 1 is operated in the reverse process to the above, and the process in which the filling liquid flow path 28 and the return gas flow path 29 are both closed in the middle of the time when the container 2 reaches the delivery position B (the opening / closing member 26 Since the tip of the outer tube 8 is sealed by the O-ring 26a of the opening / closing member 26 by being housed in the tip portion of the outer tube 8), the filling port 15a of the container 2 is separated from the sealing material 17 thereafter, and the space between them is increased. The step of releasing the seal is performed.

Along with this process, the container 2 in a pressurized state
Is guided from the Y'position in front of the Y position to the section where the narrowing rail 48 exists. Here, the amount of squeezing in and out of the squeezing rail 48 (squeezing amount) is changed from the β state to the γ state in which the container 2 elastically restores itself by the atmospheric pressure release as shown by the solid line in FIG. Therefore, when the pressurized container 2 reaches the squeezing rail 48, the body portion 15c of the container 2 is forcibly squeezed to the γ state.

At this time, since the filling liquid flow path 28 and the return gas flow path 29 are both in communication with the filling tank 5 ,
The container pressure due to the squeezing is small, and the container squeezing when the container 2 descends is easy.

Such a squeezed state continues to the Z'position after the step of releasing the seal between both the seal material 17 and the container 2, and the container restoring force (restoring phenomenon at the time of elasticity) when the container 2 is released to the atmospheric pressure. ) Is suppressed.

Then, the container 2 remains in the γ state even after the squeezing operation is completed after the atmospheric pressure is released. This prevents the filling liquid 3 in the container 2 from being unnecessarily given kinetic energy due to the generation of the restoring force.

As a result, the container 2 is lowered by a lifting device (not shown) while maintaining the γ state, and the filling liquid 3 is separated from the filling valve 1 while the filling liquid 3 is in a stable state, and the container is moved from the delivery position B to the container. It is discharged to the discharge line 43.

As a result, the filling liquid 3 in the container 2 splashes due to the disturbance of the filling liquid 3 due to the elastic restoration phenomenon of the container 2 and the repeated wavy undulation of the liquid surface due to the vibration of the container 2 which is restored from the bulge. It is possible to prevent the particles from going up and scattering from the filling port 15a to the outside.

Moreover, the squeezing structure capable of squeezing the body of the moving container 2 and adjusting the amount of elastic deformation of the container 2 is
Since it can be easily squeezed to a volume substantially equivalent to the restored volume of the container 2, the filling liquid 3 can be effectively and reliably prevented from scattering to the outside.

Particularly, the narrowing structure in which the container holder 46 and the narrowing rail 45 are combined is a deformable container having elasticity which has been generally put into practical use, in particular, a self-standing container, the cross section of which is circular or square. When a pressure is applied to the container (internal pressure) regardless of whether it is rectangular or rectangular, the effect is great when the container has a large bulging in the lateral direction and a high elastic restoring property rather than a bulging in the vertical direction.

In the embodiment, the squeezing rail is used to forcibly elastically deform the container by a volume equivalent to or greater than the restoration amount of the container, but the present invention is not limited to this. Other structures and means may be used as long as they can be given in a substantially equivalent amount. For example, any other material such as a container scissor lever that moves together with the container holder can be used as long as it can apply a pressing pressure to the container.

Needless to say, the present invention can be applied to both the filling valve structure and the filling valve structure having no lifting device. Further, the present invention is applied to the case of filling a container with a filling liquid having no foaming property,
The present invention is not limited to this, and can be applied when filling a foamable filling liquid into a container. In the case of this foamable filling liquid, the internal pressure at the time of filling is further increased, so that the effect of the present invention becomes more remarkable.

Further, the present invention may be applied to a filling method and a filling device for filling a container by using either one of the filling liquid passage and the return gas passage of the filling valve.

[0078]

As described above, claim 1 and claim 2
According to the invention described in (1), it is possible to solve problems such as jumping up of the filling liquid and scattering of the filling liquid to the outside of the container due to the elastic restoration phenomenon of the container in the filling process.

According to the third aspect of the present invention, in addition to the above effects, it is possible to easily squeeze the container to a volume substantially equivalent to the restoring capacity of the container, and to effectively and with high certainty, the outside of the filling liquid. Can be prevented from scattering.

According to the invention as set forth in claim 4, in addition to the above-mentioned effect, the deformed container which is generally put into practical use, in particular, the self-standing container has a circular, rectangular or rectangular cross section, and the like. It is possible to exert a high effect with a container having a large elastic swelling in which the bulge in the lateral direction is larger than that of the bulge.

[Brief description of drawings]

FIG. 1 is a cross-sectional view illustrating a filling device according to an embodiment of the present invention.

FIG. 2 is a view for explaining the flow of a filling line of the filling device.

FIG. 3 is an enlarged view of a portion of the filling line where a narrowing rail is present.

FIG. 4 is a cross-sectional view for explaining a conventional filling device.

[Explanation of symbols]

1 ... Filling valve 2 ... Container
5 ... Filling tank 15a ... Filling port 28 ... Filling liquid flow path
29 ... Return gas flow path 44 ... Strut 45 ... Support piece
46 ... Container holder 48 ... Squeezing rail.

Continuation of the front page (72) Inventor Saburo Ida No. 1 Nishieda, Iwazuka-cho, Nakamura-ku, Nagoya, Aichi Prefecture RSE Co., Ltd. (56) Reference JP-A-4-242589 (JP, A) ) JP-A-3-289435 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) B67C 3/02 B67C 3/24

Claims (4)

(57) [Claims] 1. A filling valve of a container having elasticity is sealed by a filling valve, and a filling liquid flow path and a return gas flow path of the filling valve are used to pressurize the filling liquid in a filling tank. In a method of filling an elastic container, the filling liquid flow path and the return gas flow path of the filling valve, or both of the container and the filling tank are communicated with each other in the container. From the pressurized state to the end of filling, until the sealing state between the filling valve and the container is released ,
Elasticity by restoring capacity equivalent or more capacity of the container this, and wherein the forcibly elastically deforming the container, the filling process of the container having an elasticity. 2. The filling port of a container having elasticity is sealed by a filling valve, and the filling liquid in the filling tank is pressurized by using the filling liquid passage and the return gas passage of the filling valve. In a filling device for a container having elasticity, the filling liquid flow path and the return gas flow path of the filling valve, or both of the filling tank and the filling tank communicate with each other. From the pressurized state to the end of filling, until the sealing state between the filling valve and the container is released ,
Restoring capacity by elasticity of the container this equivalent or more capacity amount, characterized in that a deforming means for forcibly resiliently deforming the container, filling apparatus for a container having an elasticity. 3. The elastic force according to claim 2, wherein the deforming means is constituted by a squeezing structure capable of squeezing the body of the container and adjusting the amount of elastic deformation of the container. Device for filling containers with properties. 4. The squeezing structure has a container holder that supports the body of the container on one side facing the container with the container sandwiched therebetween, and the body of the container cooperates with the container holder on the other side. filling apparatus for containers that have a resiliency of claim 3, characterized in that it is configured to have a constriction rail to elastically deform.