JPH07165293A - Device for filling container - Google Patents

Abstract

PURPOSE:To control a valve for liquid without using an external controlling device but also by a lever working with a cam. CONSTITUTION:A liquid tank 11 to be filled is capable of being moved up and down relative to a stand 14. An upper housing 12 and a lower housing 13, both communicating with the liquid tank 11, are bolted. A balance piston 22 tightly attached to a valve body 21 is moved in a sealed state inside the cylinder formed by the upper housing 13. A liquid passageway 21c and a pressurized-gas passageway 15 are formed in the valve body 21 and a venturi tube 20 and a spring receptacle 25 are attached to the upper end 21a of the valve body. A liquid valve 23 is movably fitted in a sealed state in the cylindrical space of the valve body 21. The space between the inner cylinder of the liquid valve 23 and the outer surface of the venturi tube 20 forms a filling-liquid passageway 18. The liquid valve seat 23a at the lower end of the liquid valve 23 comes in contact with the lower end 20b of the venturi tube 20 to form a switch valve S for the filling liquid.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container filling device for filling a container with liquid.

[0002]

2. Description of the Related Art As an example of an apparatus for filling a liquid into a conventional container, Japanese Patent Application No. 1-203944 (JP-A-3-68481).
What is proposed in Japanese Patent Laid-Open Publication No. 9-44) will be described below with reference to FIGS.

In these figures, a gas switching valve main body 153 is provided at regular intervals in the lower portion of an annular tank 132 containing a liquid.
Is fixed by a bolt (not shown), and a housing 101 fixed by a bolt 155 is provided on the lower surface of the gas switching valve body 153. The liquid to be filled in the container 134 is stored in the inside 133 of the annular tank 132 and, at the same time, receives a gas pressure (counter pressurization gas pressure).
The surface of the liquid is below the height of the free interior of the annulus 132 so that the gas space above it expands.

A holding member 104, which is formed as a hollow container and serves to position and seal the container 134, is coaxial with the housing 101 and is slidably attached to the housing 101 outside the housing 101.

The holding member 104 is in contact with the outer wall of the housing 101 in a gas-liquid-tight manner at a position indicated by 135, and has an arm member for moving the holding member 104 up and down with respect to the housing 101 at the central outer surface portion. A pin shaft 13 that can be slidably fitted in an elongated hole portion 355 provided in 350.
6 (see FIG. 9). The inner wall of the lower end portion of the holding member 104 has a positioning taper surface 137 that narrows inward from the lower end thereof. A sealing element 138 as a sealing member for the container 134 is arranged at the inner end of the positioning tapered surface 137.

The container 134 is placed on the lower support 139 fixed to the housing 101, and the guide portion 1 is provided in a semicircular shape at a position centered on the filling device.
Restrained by 40.

The housing 101 has an internal piece 14 inside.
1, and a substantially annular liquid supply path 142 is formed between the inner piece 141 and the housing 101. An annular injection port 12 having a diameter larger than that of the liquid supply passage 142 is provided below the liquid supply passage 142.
6, the liquid jet is guided from the inlet 126 to the inner wall of the container 134, where it becomes as laminar as possible and flows down toward the bottom.

The housing 101 has a step 14 inside thereof.
3 which is at the same time an upper limit for the inner piece 141. There the gap of the liquid supply channel 142 ends and this has to be sealed here, so that an annular sealing element 144a is arranged above the step 143, which annular sealing element 1
44a can be moved up and down by tube 146. Tube 146
A compression spring 147 is arranged outside the upper part of the. Tube 14
The inner space 6 and the outer space 150 communicate with the inner space 133 of the liquid space of the annular tank 132 through the hole 145.

A gas pipe 151 is arranged inside the inner piece 141 so as to move in the axial direction. The gas pipe 151 has a recess 151a on the outer peripheral surface in the lower portion, and the free end 226 of the bending member 225 is attached thereto. Bending member 22
5 is connected to the holding member 104 by a pin 125 and a nut 230 at the other end 229. The gas pipe 151 reaches the inner space 157 of the gas passage 156, which extends upwards into the gas space of the annular tank 132 and ends above the liquid surface, whereby the gas pipe 15
The inside of 1 is connected to the internal gas space of the annular tank 132. A gas valve (not shown) is arranged in the gas passage 156.

The outer surface of the housing 101 and the holding member 104
An annular chamber 159 having an outer diameter equal to the inner diameter of the flange portion of the container 134 is provided between the inner surfaces of the chamber 159.
Communicates via a passage 162 with a release valve 161 which can be opened by the tappet 160 from the outside, and an annular chamber 159 connects with the interior space of the sealing element 138 via a passage 163.

FIG. 9 is a view of the arm member 350 shown in FIG.
FIG. 10 is a sectional view taken along the line A, and as shown in FIGS.
4, a pin shaft 136 for moving the holding member 104 up and down with respect to the housing 101 is provided on the center outer side surface of the housing 4. The pin shaft 136 is slidably fitted to the elongated hole 355 of the arm member 350. The arm member 350 is provided with a roller 351 at one end and a pin 352 at the other end, and the pin 352 is rotatably supported by a support arm 353 fixed to the lower surface of the annular tank 132 with a bolt 356. Has been done.

A spring 354 is interposed between the arm member 350 and the support arm 353 at a position between the elongated hole 355 of the arm member 350 and the pin 352, and a lower end of the spring 354 is armed by a spring washer 357. It is supported by the member 350.

On the other hand, at a position between the arm member 350 and the roller 351, guides 360 suspended and fixed to the gas switching valve main body 153 by bolts 359 are arranged, and both sides of the guides 360 are provided. The arm member 3
Sleeve 362 fixed to the inner surface of 50 with bolts 361
Is provided. 363 is a stopper member, and the bolt 3
It is fixed to the guide 360 by 64. 36
Reference numeral 5 denotes a control cam that contacts the roller 351 and moves the holding member 104 up and down via the arm member 350.

Next, the operation of the conventional filling device will be described below. In the rest state, the housing 101, the inner piece 141, the annular sealing element 144a, the tube 14
Since the liquid valve 144 made of 6 is closed, the liquid cannot flow out. The internal space 157 of the gas passage 156 is also closed by a gas valve (not shown). Release valve 16
1 is also closed.

A carrier device (not shown) delivers the open-ended container 134, which is carried on the lower abutment 139 and centered by the guide 140 on the filling device. From this point on, there is no relative movement between the filling device and the container 134, but they both make a circular movement in the entire filling machine.

The holding member 104 is moved downward by the arm member 350 fitted to the pin shaft 136 of the holding member 104 and placed on the container 134. A gas valve (not shown) in the gas passage pipe 156 is opened by a control device (not shown), and gas is supplied to the gas passage pipe 156 and the gas pipe 15
1 through the inner space 133 of the annular tank 132 to the container 134
Reach inside. Thereby, inside the container 134, in the liquid supply passage 142, in the passages 162 and 163 and in the chamber 15
In 6 all these are in communication with each other,
Equal pressure appears.

This pressure also acts on the lower side of the chamber 159, but in the case of this conventional example, since the outer diameter of the housing 101 and the inner diameter of the flange of the container 134 are the same, they are related to the closed diameter of the container. There is no difference in cross-sectional area, and the force on the container side due to the pressure in the chamber 159 is eliminated.

Therefore, the force acting on the peripheral edge of the opening of the container 134 is appropriately applied by the spring 354 arranged on the arm member 350 to maintain the sealed state.
After the pressure equilibrium has been achieved, the liquid valve 144 causes the compression spring 14
7, the liquid automatically opens, and as a result, the liquid passes through the liquid supply path 142 and the inlet 126, and then the container 134.
And the container 134 is filled until the liquid surface reaches the mouth of the gas tube 151. The other valves are closed so that the gas at the top of the container 134 can no longer escape and therefore no further filling is possible.

A liquid valve 144 and a gas valve (not shown) of the gas passage pipe 156 are mechanically closed by a valve opening / closing mechanism (not shown), so that the inner space of the container 134 is separated from the inner space of the annular tank 132 and the outside air. Will be completely closed against.

Next, a release valve 161 is opened by a cam (not shown).
Is opened and the internal space pressure of container 134 is released through passage 163, chamber 159, passage 162, release valve 161, and release chamber 366. After the pressure is released, the arm member 350 on the roller 351 side is lifted by the control cam 365, so that the holding member 104,
The sealing element 138, the bending element 225 and the gas tube 151 are lifted together and simultaneously above the container top. The container 134 is then transferred from the rotating zone of the filling machine to the rotating zone of a closure machine (not shown).

Next, the case where the holding member 104 is removed from the filling device will be described with reference to FIGS. First bolt 3
By loosening 64, the stopper member 363 is slid rightward in FIG. 8 to eliminate the contact state of the arm member 350 with the shoulder portion 350a. Next, the holding member 104, the bending member 225, and the gas pipe 15 are rotated while rotating the arm member 350 downward.
1 is integrally moved downward, and when the bending member 225 is attached to the holding member 104 at a position lower than the lower surface 126a of the inlet 126, when the holding member 104 is twisted, the pins on the outer peripheral side surface of the holding member are provided. The shaft 136 and the elongated hole 355 provided in the arm member 350 are disengaged from each other, and the holding member 104 can be removed together with the gas pipe from the filling device.
The elongated hole portion 355 has a size and shape sufficient to eliminate the fitting of the pin shaft 136 when the holding member 104 is twisted. When the holding member 104 is attached to the filling device, the procedure is the reverse of the above.

In the above-mentioned conventional example, the structure is such that the long hole portion of the arm member and the pin shaft of the holding member can be fitted / removed between them, but the long hole portion and the pin shaft may be installed in reverse. Alternatively, other suitable engagement means may be employed.

Further, if the compression spring for urging the arm member is adjustable, it is possible to adjust the internal pressure difference due to the difference between the housing outer diameter and the container flange diameter. It is possible to always give an appropriate sealing pressure.

[0024]

The conventional container filling device for filling a fluid with a container has the following problems. (1) It is necessary to hold the liquid in the liquid passage by surface tension in order to prevent the liquid in the liquid passage from dropping into the container when the filling valve finishes filling and the filling amount does not fluctuate. Although a wire net is attached, when a liquid containing solid matter such as pulp is filled, the wire net is clogged with the solid matter and the filling cannot be performed as planned.

(2) Since the filling amount in the container is determined by the position of the lower end of the gas pipe, it is necessary to change the length of the gas pipe (replace a part of the gas pipe) to change the filling amount.

(3) Similarly, the liquid valve must be opened / closed by the valve opening / closing mechanism.

(4) The conventional valve cannot be filled without pressurizing the inside of the annular tank.

(5) It is necessary to operate the valve opening / closing mechanism when the filling operation is completed and the filling liquid remaining in the filling valve is discharged.

It is an object of the present invention to solve the above problems and to operate a liquid valve only by a lever operated by a cam without using an external control device.

[0030]

As a structure for achieving the above object, the container filling device of the present invention is connected to the bottom of the filling liquid tank and covers the container placed on the lower mounting table from above. In a container filling device that seals the container mouth and fills the filling liquid, a hollow housing that is vertically installed and fixed to the lower portion of the filling liquid tank, and is fitted and attached so as to be vertically movable with respect to the housing. A passage is formed for sending the pressurized gas of the tank to the container, and a filling liquid passage is formed by a hollow cylindrical valve body in which a vent tube is integrally fixed at the upper part and an outer cylinder surface of the vent tube. A liquid valve that is in contact with the lower end of the vent tube to form an opening / closing valve for the filling liquid, and a first compression spring that is interposed between the valve body and the liquid valve so as to close the liquid valve. And the filling device through the valve body Second compression spring for supporting the weight of the movable part of the valve, a gas valve for opening and closing the upper end of the vent tube attached to the upper portion of the liquid valve, and an airtight slide between the outer periphery of the liquid valve and the inner periphery of the valve body. Movably mounted,
A centering bell of the container having a sealing member for sealing the container mouth, a third compression rod biased between the liquid valve and the centering bell, and a fourth body of the valve body.
The filling liquid is filled by a valve body elevating device which is urged downward by a compression spring and operated by an external cam device.

Further, in the above container filling device, a valve piston fixedly mounted on the outer circumference of the valve body and sliding in the cylinder formed by the housing while sealing the inner circumference of the cylinder, and a lower cylinder of the valve piston. Has a gas passage for pressurizing the counter gas pressure of the filling liquid tank, further slides on the outer circumference of the second compression spring and the liquid valve, receives the biasing force of the second compression spring, and receives the liquid. Depending on the position of the valve, an intermediate spring receiver that contacts the shoulder of the liquid valve, the valve body, or the upper edge of the housing, and the intermediate spring receiver that is attached to the liquid valve and is in the free state of the filling device. The stopper ring that prevents further downward movement when it comes into contact with the valve body, and the urging force of the fourth compression spring of the valve body elevating device is stopped in the free state of the filling device. Of the valve body, which can be further pushed down, and a movable cam device which pushes down the lever of the lifting device are moved to move the cam device to the operating position at the end of the filling work. It is also effective to further push down the valve body elevating device from the free state, lower the vent tube to open the liquid valve, and easily remove the filling liquid from the filling device after the work to facilitate the cleaning of the filling device. Is.

Further, in the above container filling apparatus, a float valve is provided at the lower end of the vent tube to close the lower end opening of the vent tube when the filling liquid level rises, and when the filling valve rises away from the container after filling. It is also possible to prevent foaming of the liquid in the container due to backflow of the liquid in the vent tube.

[0033]

According to the container filling device of the present invention configured as described above, when there is no container on the mounting table, the valve body and the valve body elevating device can be integrally attached to the valve body by downward urging. The vent tube is pushed down. At this time, the liquid valve is pushed by the first compression spring that engages with the valve body and abuts on the end of the vent tube,
The so-called liquid opening / closing valve is closed.

When the arm member of the valve body raising / lowering device is raised, the liquid valve first comes into contact with the intermediate spring receiver, and then rises together with the intermediate spring receiver.

Even after the liquid valve comes into contact with the intermediate spring receiver, the liquid valve is urged downward by the combined pressing force of the first compression spring and the second compression spring. The valve and the end of the vent tube make contact with each other to keep the on-off valve closed.

Next, when there is an empty container on the mounting table, when the arm member of the lifting device descends, the second compression spring comes into contact with the upper end of the housing and is stopped from descending, so that the elastic force of the second compression spring is the liquid. It no longer acts as a force to lower the valve,
A third compression spring (which is urged by a stronger pressing force than the first compression spring) that is in contact with the upper part of the container and is engaged with the centering bell that is pushed up pushes up the liquid valve from below.

At this position, in the case of liquid injection under pressure, the gas switching valve is operated to send the gas in the filling liquid tank to the container so that the pressure in the container becomes equal to the gas pressure in the filling liquid tank.

On the other hand, since the vent tube moves further downward, it is separated from the liquid valve, and the so-called open / close valve is opened. At the same time, the gas valve seat integrally attached to the liquid valve is opened from the upper port of the vent tube. Open the gas passage away.
As a result, the filling liquid in the filling liquid tank flows into the container through the filling liquid flow passage, and is replaced with the gas in the container to be filled.
In the case of liquid filling that does not contain pressurized gas, the gas valve seat attached to the liquid valve is moved upward and fixed in advance so that the gas valve is kept in a normally open state. In this case, it is not necessary to operate the gas switching valve.

The filling of the container with the liquid is stopped when the liquid level rises to the inlet of the vent tube and stops, and the filling liquid rises in the cylinder of the vent tube and reaches the liquid level in the filling liquid tank.
After that, the valve body lifting device is activated to raise the valve body, and the liquid valve and the gas valve above the vent tube are closed.

Next, when the gas vent valve is operated to release the gas pressure in the upper part of the container, the liquid accumulated in the vent tube is pressed by the expansion of the gas in the gas chamber and flows into the container. The valve body is further raised to complete one cycle of the filling process.

Adjustment of the taste of the container is performed by a driving device that moves the filling liquid tank up and down. That is, the positional relationship between the upper end of the container and the lower end of the vent tube can be changed by changing the position of the filling liquid tank with respect to the mounting table.

Next, the operation of removing the liquid still remaining in the filling device after draining the liquid from the filling liquid tank at the end of the filling operation will be described.

A valve piston fixedly mounted on the outer circumference of the valve body and sliding in the cylinder forming the housing while sealingly contacting the inner circumference of the cylinder, and a counter gas of the filling liquid tank on the lower cylinder portion of the valve piston. It has a gas passage for pressurizing pressure, and further slides on the outer periphery of the second compression spring and the liquid valve, receives the biasing force of the second compression spring, and the shoulder portion of the liquid valve depending on the position of the liquid valve. Alternatively, when the liquid valve comes into contact with the intermediate spring receiver that contacts the upper edge of the valve body or the housing and the liquid valve comes into contact with the intermediate spring receiver in the free state of the filling device, further lowering is performed by the stopper ring attached to the liquid valve. Stop.

The fourth compression spring of the valve body lifting device is
Although the urging force of the filling device is restrained in the free state, a play gap is provided between the action pin of the fourth compression spring of the lifting device and the lever, so that the lever can further push down the valve body, By also using a movable cam device, when the filling operation is completed, the valve body is pushed down further from the free state and the vent tube is lowered, so that the liquid valve above is stopped by the stopper ring, so the liquid on-off valve can be opened. The liquid can be opened and drained to facilitate the cleaning work after the work.

Furthermore, if a float valve is provided at the lower end opening of the vent tube, when the liquid level of the container rises, the float valve closes the vent tube, further filling the liquid and raising the liquid in the vent tube. Suppress. Therefore, when the filling valve rises away from the container, the liquid does not flow down from the vent tube into the container, and it is possible to prevent foaming particularly in the case of a gas-containing beverage.

[0046]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows one cross section of a filling valve of a container filling machine in which a large number of filling valves are annularly arranged, and FIG.
3 is a sectional view taken along line BB of FIG.

In these figures, a filling liquid tank 11 having a lid that can be hermetically sealed and capable of withstanding the internal pressure of the gas-containing liquid stored therein is mounted on a mounting table 14 of the container 10 by a driving device (not shown). It is possible to move up and down.

A hollow housing (upper) 12 and a housing (lower) 13 communicating with the filling liquid tank 11 are fastened to the lower portion of the filling liquid tank 11 together with bolts. Housing (top)
A gas passage 17 is opened at 12.

Housing (top) 12, housing (bottom)
The valve body 21 is movably fitted in the cylinder of 13 while being sealed, and the balance piston 22 fixed to the valve body 21 moves in a cylinder formed by the housing (lower) 13 while being sealed. The cylinder chamber of the housing (lower) 13 on the lower side of the balance piston 22 is in communication with the atmospheric pressure in the filling liquid tank 11 through the pipes 50 and 51.

The valve body 21 has a filling liquid tank 11
The liquid passage 21c for introducing the liquid and the pressurized gas passage 15 of the filling liquid tank 11 are formed, and the vent tube 20 and the spring receiver 25 standing on the upper end 21a of the valve body are attached. A gas chamber 20 a is provided above the vent passage 19 of the vent tube 20.

A liquid valve 23 is sealed in the cylinder of the valve body 21 and movably fitted therein. Valve body 2
1 and the liquid valve 23 are connected by a biased first compression spring 33. Further, the space between the inner cylinder of the liquid valve 23 and the outer surface of the vent tube 20 forms the filling liquid passage 18, and the liquid valve seat 23a at the lower end of the liquid valve 23 is the vent tube 20.
The on-off valve S for the filling liquid is formed in contact with the lower end portion 20b of the.

The support cylinder 30 is connected to the upper end 23c of the liquid valve 23 by the pin 26, and the sealing material 2 is inserted in the support cylinder 30.
A gas valve seat 27 having 8 enters, and the gas valve seat 27 covers the head of the vent tube 20 to form a gas opening / closing valve V. The pin 26 penetrates the elongated hole 27a of the gas valve seat 27, the gas valve seat 27 and the support cylinder 30 are connected by a biased compression spring 48, and the distance between the two is adjusted by the adjusting nut 29.

The gas opening / closing valve V on the head of the vent tube 20 and the liquid opening / closing valve S on the lower part of the vent tube 20 are
Since the opening and closing operations are performed at the same time by the relative movement of the liquid valve 23 and the liquid valve 23, the gap between the two valves is covered by providing a play in the coupling on the gas valve side and sandwiching the spring. There is.

A centering bell 31 which covers the mouth of the container 10 and seals below the filling valve is fitted inside the lower end 21b of the valve body 21 so as to be movable and also outside the liquid valve 23 so as to be movable. The liquid valve 23 is connected to the liquid valve 23 by a biased third compression spring 35. The pressurizing gas passage 16 is opened in the centering bell 31, and a sealing material 32 is attached.

The intermediate spring receiver 24, which slides on the outer periphery of the liquid valve 23, is connected to a spring receiver 25 which is integral with the valve body 21 via a biased second compression spring 34.

Reference numeral 41 is a valve body lifting device. An arm 43 pinned to an abutment 42 fixed to the filling liquid tank 11 and urged by a fourth compression spring 46 via a spring base 49, a filling valve elevating cam 45, and a roller 44 at the tip of the arm 43. Is rotated up and down to rotate, and the pin 47 planted in the valve body 21 is moved up and down in the arm long hole 43a. FIG. 2 which is a BB cross section of FIG. 1 shows a valve body lifting device 41 in a plan sectional view.

Reference numeral 37 is a gas switching valve for sending the pressurized gas in the filling liquid tank 11 into the container 10 covered by the centering bell 31 and sealed, and is operated by an arc-shaped cam 39 attached to an external fixing member. . Reference numeral 38 denotes a gas vent valve for venting the pressurized gas in the container 10, which is operated by an arc-shaped cam 40 attached to an external fixing member, and exhaust gas is discharged to the outside by a gas exhaust pipe 52.

The operation will be described below by disassembling the filling process of the present filling valve. In FIG. 3, (a) shows a state in which the filling valve is lowered when the container 10 is not provided. Mounting table 14
When the elevating device 41 pushes the valve body 21 downward when the container 10 is not present in the container 10, the vent tube 20 connected to the valve body 21 is also pushed downward.

On the other hand, the liquid valve 23 is pushed by the first compression spring 33 that engages with the valve body 21 and comes into contact with the end portion 20b of the vent tube, so that the liquid opening / closing valve S remains closed. Further, the upper end of the vent tube 20 also has a liquid valve 23.
The gas on-off valve V is brought into a closed state by coming into contact with the seal member 28 of the gas valve seat 27 connected to the gas valve seat 27.

In FIG. 3 (b), the filling valve is raised and the container 10
Indicates the acceptance status of. The liquid valve 23 first comes into contact with the intermediate spring receiver 24 (the portion indicated by T in the figure), and thereafter rises together with the intermediate spring receiver 24.

At this time, the liquid valve 23 is urged downward by the elastic force of the pressing force of the first compression spring 33 and the pressing force of the second compression spring 34, and the lower end 23a of the liquid valve 23 vents. The liquid opening / closing valve S and the gas opening / closing valve V are kept closed by contacting the end portion 20b of the tube.

The pressure in the filling liquid tank 11 is constantly applied to the cylinder portion below the balance piston 22 so that the pressure in the filling liquid tank 11 exerted on the upper surfaces of the valve body 21 and the liquid valve 23 is canceled.

In FIG. 3C, the container 10 is placed on the mounting table 14 below the filling valve, and the lifting device 41 is mounted on the valve body 21.
Shows the state where the centering bell 31 is in contact with the mouth of the container 10 by pushing down. Even in this position, the liquid opening / closing valve S,
The gas open / close valve V maintains the closed state.

FIG. 3D shows a state in which the lifting device 41 further lowers the valve body 21 and the liquid valve 23 reaches the liquid filling position. When the valve body 21 is further lowered, the liquid valve 23 is blocked by the valve body 21 due to the pressing force of the first compression spring 33 and the pressing force of the second compression spring 34, and thus moves downward simultaneously. However, (the pressing force of the pressing force of the first compression spring 33 and the pressing force of the second compression spring 34 is set to be larger than the biasing pressing force of the third compression spring 35). Since it comes into contact with the upper end of the housing (upper) 12 to stop the descent, (the part indicated by U in the figure)
The pressing force of the second compression spring 34 does not act as a force for lowering the liquid valve 23, and is stronger than the pressing force of the first compression spring 33 that is engaged with the centering bell 31 that is pushed up by contacting the upper portion of the container 10. The third compression spring 35 biased upward pushes up the liquid valve 23 from below, so that the liquid valve 23 stops at the position where it hits the intermediate spring receiver 24 (the position indicated by T in the figure). During the transition from (c) to (d) of FIG. 3, in the case of a liquid containing pressurized gas, the gas switching valve 37 is actuated by the cam 39 to move the pressurized gas in the filling liquid tank 11 to the pipe 50 and the gas passage. It is sent to the container 10 via 17, 15, 16 and the container 1
The pressure in 0 is made equal to the pressure in the filling liquid tank 11.

FIG. 3E shows a liquid filling state. When the valve body 21 is further lowered, the vent tube 20 moves further downward and is separated from the liquid valve 23, and the liquid opening / closing valve S is opened, and at the same time, the gas valve seat 27 integrally attached to the liquid valve 23 is provided. Is separated from the upper portion of the vent tube 20 and the gas opening / closing valve V is opened. As a result, the liquid in the filling liquid tank 11 passes through the liquid passages 21c and 18 and the container 10
The gas inside is replaced and filled. The gas in the container 10 returns to the filling liquid tank 11 through the vent passage 19.

In the case of liquid filling which is not a pressurized gas, the liquid valve 2
The gas valve seat 27 attached to the No. 3 is fixed by moving the adjusting nut 29 beforehand by moving it upward so that the gas on-off valve V is always open. In this case, it is not necessary to operate the gas switching valve 37 described above.

The filling of the container 10 with liquid is stopped when the liquid level of the container 10 rises to the lower surface of the vent tube 20 and stops, and the filling liquid rises up the vent passage 19 to reach the liquid level in the filling liquid tank 11. After that, the valve body elevating device 41 is operated to raise the valve body 21, and the liquid opening / closing valve S is closed and the gas opening / closing valve V is also closed.

Next, when the gas vent valve 38 is operated by the cam 40 to release the gas pressure in the upper part of the container, the vent tube 20
The liquid accumulated in the cylinder is pressurized by the expansion of the gas in the gas chamber 20a and flows into the container 10. The valve body 21 is further raised to the position shown in FIG. 3B, and the filling process is completed for one cycle.

The filling level of the container 10 is adjusted by the filling liquid tank 1.
1 is performed by a drive device (not shown) capable of moving up and down. That is, by changing the vertical position of the filling liquid tank 11 with respect to the mounting table 14, the vertical distance between the upper end of the container 10 and the lower end of the vent tube 20 can be adjusted.

Next, as a second embodiment, at the end of the filling operation, a device for easily removing the liquid still remaining in the filling device after removing the liquid from the filling liquid tank is added to the above-mentioned filling device. What was done and what provided the float valve in the lower end of the vent tube are demonstrated with reference to FIGS. As shown in the figure, most of the filling device is the same as the filling device of the first embodiment, so different parts will be described.
Description of the same parts will be omitted. The names and part numbers of the same parts are used as they are.

As shown in FIGS. 4 and 5, a stopper ring 65 is attached to the liquid valve 23. Stopper ring 6
5 is an intermediate spring support 2 when the liquid valve 23 is in the free state of the filling device.
When it hits 4, it stops further descending. The fourth compression spring 46 of the valve body lifting / lowering device 50 is interposed between the abutment 52 and the spring base 59, and the extension of the fourth compression spring 46 is limited by the shaft 64 and the stop nut 65.

FIG. 4 shows the filling device in a free state, and the fourth compression spring 46 cannot push down the lever 53 any more. As shown in FIG. 6 which is a D-D cross section of FIG. 4, the pins 63 fixedly provided on both sides of the spring base 59 enter the large oblong holes 53 b of the lever 53 and enter the fourth compression spring 4.
The biasing force of 6 is transmitted to the lever 53. The lever 53 of the lifting device 50 can be further pushed down by the elongated hole 53b. Reference numeral 70 denotes a movable cam device that pushes down the lever 53 of the lifting device 50.

At the end of the filling operation, the cam device 70 is moved to the operating position, and the cam device 70 further pushes down the valve body elevating device 50 from the free state.
By dropping 0, the liquid valve 23 and the conical valve 20b at the lower end of the vent tube are opened, and the filling liquid in the filling device can be easily removed.

Further, in the above container filling device, a float valve 67 is provided at the lower end 20b of the vent tube.
When the filling liquid level rises, the float 68 freely moving up and down inside floats up and closes the lower end opening of the vent tube 20, preventing liquid from flowing into the vent tube 20. The float valve 67 is designed to prevent bubbling due to the reverse flow of the liquid in the vent tube 20 into the container when the filling device is lifted away from the container after filling the liquid.

Next, the operation of the second embodiment will be described with reference to FIG. The operation of removing the liquid still remaining in the filling valve after the liquid is drained from the filling liquid tank 11 at the end of the filling operation will be described. FIG. 7 shows the state of the liquid drain.

When the liquid valve 23 comes into contact with the intermediate spring receiver 24 in the free state of the filling valve (the position indicated by T), the stopper ring 65 attached to the liquid valve 23 causes the liquid valve 23 to be further lowered. Stop (the position is indicated by W).

The fourth compression spring 46 of the valve body elevating / lowering device 50 is restrained in its urging force in the free state of the filling valve (state of FIG. 4, shown by a chain double-dashed line in FIG. 7).
Action pin 6 of spring base 59 of fourth compression spring 46 of the lifting device
Since 3 is in the long hole 53b of the lever 53, the lever 53 can further push down the valve body 21, and by using the movable cam device 70 together, the valve body 21 is in a free state at the end of the filling operation. It is further pushed down to lower the vent tube 20.

Since the liquid valve 23 is prevented from descending by the stopper ring 65 as described above, the vent tube 2
The liquid can be drained by opening the liquid on-off valve (the position of S) by lowering 0, and the cleaning work after the work becomes simple and easy.

Furthermore, the lower end opening 2 of the vent tube 20
If the float valve 67 is provided at 0b, when the liquid level of the container rises, the float 68 causes the vent tube 20 to move.
To prevent further liquid filling and liquid rise in the vent tube 20. Therefore, when the filling valve rises away from the container, the liquid does not flow down from the vent tube 20 into the container, and it is possible to prevent foaming particularly in the case of a gas-containing beverage. The position of the float 68 shown in FIG. 4 shows a state in which the vent tube 20 is closed (position of X), and FIG.
The position of the float 68 shown in () indicates a state in which the vent tube 20 is open (position X).

Although the embodiments of the present invention have been briefly described above, the present invention is not limited to the above embodiments and various design changes can be made within the scope of the technical idea of the present invention. It belongs to the technical scope of the invention.

[0081]

As described above, the container filling device of the present invention has the following effects. (1) Since there is no screen such as a wire mesh in the liquid passage, it is possible to fill a liquid containing solid components such as pulp. (2) As a method of adjusting the insertion depth of the gas conduit that determines the filling amount into the container, the parts for changing the filling amount can be replaced by using the mechanism that changes the relative height between the filling valve and the container. It can be unnecessary. (3) Since the liquid valve is opened and closed by the contact between the filling valve and the container and the biasing force of the compression spring in the filling valve due to the container pushing up the centering bell, the control mechanism of the device for detecting the presence or absence of an extra container outside the filling valve. Need not be installed. (4) Similarly, a valve opening / closing mechanism is not necessary for opening / closing the liquid valve. (5) Both pressure filling and pressureless filling are possible. (6) When the filling operation is completed, the filling liquid remaining in the filling valve can be discharged by simply operating the valve body elevating lever with the cam.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a filling valve according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line BB in FIG.

FIG. 3 is an explanatory view of the operation of the filling valve of the embodiment.

FIG. 4 is a sectional view of a filling valve according to a second embodiment of the present invention.

5 is a cross-sectional view taken along line CC of FIG.

6 is a cross-sectional view taken along line DD of FIG.

FIG. 7 is a cross-sectional view of the filling valve according to the second embodiment during draining.

FIG. 8 is a sectional view of a conventional filling valve.

9 is a cross-sectional view taken along the line AA of FIG.

[Explanation of symbols]

 10 Container 11 Filled Liquid Tank 12 Housing (Upper) 13 Housing (Lower) 14 Placement Table 20 Vent Tube 21 Valve Body 22 Balance Piston 23 Liquid Valve 24 Intermediate Spring Bearing 27 Gas Valve Seat 31 Centering Bell 33 First Compression Spring 34 2nd Compression spring 35 Third compression spring 37 Gas switching valve 38 Gas vent valve 41 Valve body lifting device 46 Fourth compression spring 50 Valve body lifting device 65 Stopper ring 67 Float valve

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yukio Yamaguchi No. 1 Takamichi, Iwatsuka-cho, Nakamura-ku, Nagoya City Mitsubishi Heavy Industries, Ltd. Nagoya Machinery Works

Claims (3)

[Claims] 1. A container filling device which communicates with a bottom of a filling liquid tank and covers a container placed on a lower mounting table from above to seal the container mouth portion and fill the filling liquid with the filling liquid tank. A hollow housing which is vertically fixed to the lower part and a vertically movable fitting part are attached to the housing, and a passage for sending the pressurized gas of the filling liquid tank to the container is formed. A liquid valve in which a fixed hollow tubular valve body and an outer cylinder surface of the vent tube form a filling liquid passage, and which abuts the lower end of the vent tube to form a filling liquid opening / closing valve. A first compression spring that is interposed between the valve body and the liquid valve so as to close the liquid valve, and a second compression spring that supports the weight of the movable portion of the filling device via the valve body. , A ben mounted on top of the liquid valve A gas valve for opening and closing the upper end of the tube, and a centering bell for the container, which is slidably attached to the outer periphery of the liquid valve and the inner periphery of the valve body while keeping airtightness, and which has a sealing member for the container opening. , A third compression spring urged between the liquid valve and the centering bell, and a valve body lift operated by an external cam device urging the valve body downward by a fourth compression spring. A container filling device, characterized in that a filling liquid is filled by the device. 2. The container filling device according to claim 1,
The counter gas pressure of the filling liquid tank is applied to the valve piston that is fixed to the outer periphery of the valve body and slides in the cylinder formed by the housing while making a jealing contact with the inner periphery of the cylinder. It has a gas passage for pressurizing, further slides on the outer circumference of the second compression spring and the liquid valve, receives the biasing force of the second compression spring, and depending on the position of the liquid valve, the shoulder portion of the liquid valve or the When an intermediate spring receiver that contacts the upper edge of the valve body or housing and the liquid valve is attached to the liquid valve and the liquid valve contacts the intermediate spring receiver in the free state of the filling device, further lowering is stopped. And the valve body that can stop the urging force of the fourth compression spring of the valve body lifting device in the free state of the filling device and further push down the lever of the lifting device. A lifting device and a movable cam device that pushes down the lever of the lifting device are added to move the cam device to the operating position at the end of the filling work, and the cam lifts the valve body lifting device from the free state. Further push down, lower the vent tube and open the liquid valve,
The container filling device according to claim 1, wherein after the work is completed, the filling liquid in the filling device is easily removed to facilitate cleaning of the filling device. 3. The container filling device according to claim 1,
A float valve is installed at the lower end of the vent tube to close the lower end opening of the vent tube when the filling liquid level rises. The container filling device according to claim 1, wherein bubbling is prevented.