JP3380096B2 - Liquid filling apparatus and method for filling highly viscous liquid into container - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid filling device for automatically filling a container with a liquid in a fixed amount, and particularly to a container of a high viscosity liquid for filling a container at a high speed without foaming the highly viscous liquid. Regarding filling method.

[0002]

Here, a high-viscosity liquid is used.
Refers to , for example, mayonnaise, and low-viscosity liquid refers to, for example, water having a viscosity of about 3 to 5 cP, and normal viscosity refers to a viscosity of 100 to 500.
It is of the order of cP and refers to, for example, a sauce for grilled meat.

When a predetermined amount of liquid is supplied to a container, particularly when the liquid is a foamable liquid, it easily foams when supplied from the nozzle into the container.
If bubbling becomes severe, liquid will leak out in the latter half of the filling process,
It is very difficult to increase the filling speed because there are problems that the container and the device are dirty and the filling amount is inaccurate.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and provide a liquid filling device and a method for filling a highly viscous liquid into a container, which can fill a liquid that easily foams efficiently and accurately in a short time at a high speed. And

[0005]

In order to achieve the above object, a liquid filling apparatus according to claim 1 of the present invention comprises a case main body in which a filling chamber and a flow passage communicating with the filling chamber are formed. While vertically connecting the communicating nozzle cylinder, an opening / closing valve body that can open and close the flow passage is provided, and in the flow passage on the downstream side of this opening / closing valve body,
The regulating valve body scale the flow passage cross-sectional area and extending and retracting the flow path to vary the fill rate is provided, the flow path of the regulating valve body in a plurality of stages
A suction device for both adjustment and suction is provided to control the suction valve so as to move back and forth at a low speed in the initial stage of filling, then at a high speed, and then to slow down the filling speed.
It has a contractible sealing bellows, and is configured to retract the adjusting valve body to the outside of the flow path with the on-off valve body closed at the end of filling to suck the filling liquid at the nozzle cylinder outlet into the inside. It is a thing.

According to a fifth aspect of the present invention, in the method of filling a highly viscous liquid into a container, the nozzle cylinder is inserted into the mouth of the container when the highly viscous liquid is filled into the container whose vertical cross section changes.
Or close to the top and stop, and supply the liquid from the nozzle cylinder.
Then, at the beginning of filling, the filling volume rises to the downflow position at the bottom of the container.
The filling speed is low so that the filling speed will not be crushed by its own weight.
Fast filling, and when the filling liquid spreads over the entire bottom surface of the container, filling
By increasing the liquid supply flow rate, the cross-sectional area of the container at the filling liquid height
Corresponding to the rising amount of filling liquid that becomes higher as it gets narrower
Therefore, when the amount of rise is low, high-speed filling is required.
When the filling rate is high, the medium flow rate is controlled by controlling the liquid supply flow rate.
It is those that.

According to the first aspect of the invention, the flow rate can be controlled by reducing and expanding the cross-sectional area of the flow passage on the downstream side of the on-off valve body by the adjusting valve body. By selecting a filling speed corresponding to the spread of the liquid at the flow-down position, it is possible to fill efficiently in a short time without foaming. That is, the high-viscosity filling liquid supplied from the nozzle cylinder first spreads outward from the downflow position along the bottom surface of the container, and further spreads outward along the already spread surface of the filling liquid. Is excessively supplied, the filled liquid spreads in a state of being crushed by its own weight. At this time, air is entrained and a large amount of bubbles are generated in the filling liquid. However, by controlling the filling speed of the filling liquid in consideration of the spreading speed due to the viscosity of the filling liquid and the cross-sectional area of the container, it is possible to prevent foaming of the filling liquid before filling efficiently and in a short time. it can.

Further, after stopping the filling liquid by the on-off valve body,
By retracting the adjusting valve body, the filling liquid at the nozzle barrel outlet can be sucked into the nozzle barrel, preventing dripping and preventing contamination of the nozzle and container, and improving the accuracy of the filling amount. You can

According to the fifth aspect of the invention, when the viscosity is large and the spreading speed is slow at the initial stage of filling, the filling speed is slowed down, and after the filling liquid spreads to the bottom surface of the container, the spreading speed becomes faster when the filling speed increases. Can be filled more efficiently without foaming, for example, in the latter stage of filling when the cross-sectional area of the container is small, the filling speed can be slowed somewhat to prevent foaming and fill efficiently in a short time. You can

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Here, an embodiment of a liquid filling apparatus according to the present invention will be described with reference to FIGS.

As shown in FIG. 1, a cylindrical case body 1 has a filling chamber 3 having an opening / closing valve body 2 in an intermediate portion, and a filling chamber 3.
Is formed on the same axis O with the flow path 4 communicating with the lower part of
Above the filling chamber 3, a diaphragm type opening / closing device 5 which is an opening / closing means including the opening / closing valve body 2 is provided. A nozzle cylinder 6 is connected to the lower end of the flow path 4 on an axis O. In addition, in the middle portion of the flow path 4, the adjustment valve body 7 that can retreat into and out of the flow path 4 to reduce and expand the flow path area, and at the time of expansion, suck the fluid in the flow path 4 to prevent dripping. Is further provided, and an adjustment / suction device 8 for moving the adjustment valve body 7 back and forth in three stages is provided.

A supply port 3a is formed in the side wall 1a of the filling chamber 3, and as shown in FIG. 2, an axis center for supplying the liquid to a position deviated from the axis O of the case body by Δd. A supply pipe 11 having O ′ is connected and configured to form a swirl flow M in the cleaning liquid or the low and medium viscosity liquids. Also, on the inner wall of the filling chamber 3 below the supply port 3a,
A tapered seat receiving surface 3b having a smaller diameter on the side of the flow path 4 is formed, and the cone portion 2a of the on-off valve body 2 abuts on the seat receiving surface 3b so that the flow path 4 can be closed.

In the diaphragm type opening / closing device 5, a drive chamber 14 is formed by a partition wall 12 and a ceiling wall 13 in the upper part of the case body 1, and a valve shaft 15 connected to the open / close valve body 2 has an insertion hole 12a in the partition wall 12. Is slidably penetrated through.
A sealing diaphragm 16 is connected between the upper portion of the on-off valve body 2 and the case body 1 to seal the drive chamber 14 side. Further, the drive chamber 14 is partitioned by a drive diaphragm 17 attached to the upper end of the valve shaft 15 to close the closed chamber 1.
4a and the opening chamber 14b are formed, and the air supply / exhaust hole 14 is formed.
c and 14d are formed, and a closing spring 18 for urging the opening / closing valve body 2 in the closing direction via the valve shaft 15 is provided on the closing chamber 14a side when there is no load.

Therefore, when there is no load, the closing spring 18 is
As a result, the valve shaft 15 is lowered so that the on-off valve body 2 receives the seat receiving surface 3b.
And the flow path 4 is closed. Further, by supplying compressed air for operation from the air supply / exhaust hole 14c to the opening chamber 14b, the driving diaphragm 17 is driven against the closing spring 18 and the valve shaft 15 is lifted to open and close the on-off valve body 2. The flow path 4 is opened apart from the receiving surface 3b. Further, the compressed air is supplied from the air supply / exhaust hole 14d to the closed chamber 14a, whereby the drive diaphragm 17 is driven and the valve shaft 15 is driven.
Is raised, the on-off valve body 2 is brought into contact with the seat receiving surface 3b, and the flow path 4 is closed.

The adjusting valve body 7 and the adjusting and sucking device 8 are
The cylinder tube 2 is provided on the side wall of the case body 1 through the opening 20.
1 is attached to the cylinder cylinder 21 and a first cylinder chamber 22 that drives the adjusting valve body 7 to move back and forth between high speed filling (when fully opened) and low speed filling by the first piston 23 on the adjusting valve body 7 side. A second cylinder chamber 25 is formed on the outer side of the second cylinder 24 to regulate the protrusion amount of medium speed filling by the second piston 24.

Further, the adjusting valve body 7 is formed in a columnar shape, and the portion projecting into the flow path 4 has a peripheral edge portion which is in close contact between the case body 1 and the cylinder cylinder 21 and is made of a stretchable material, which is a sealing bellows 26. It is covered and sealed by. The adjusting valve body 7 has an insertion hole 22b formed in the cylinder front wall 22a.
Slidably inserted into the first cylinder chamber 22 of the first
It is connected and fixed to the piston 23.

A first piston 23 is provided in the first cylinder chamber 22.
This forms a projecting chamber 22c and a retreating chamber 22d, and supply / exhaust holes 22e, 22 for supplying / discharging compressed air for operation, respectively.
f is formed. Further, an adjusting spring 27 for retracting the adjusting valve body 7 when the compressed air is not supplied to the retreating chamber 22d is provided.

An adjusting rod 28 is connected to the first piston 23 on the side of the protruding chamber 22c, and the adjusting rod 28 extends to the side of the second cylinder chamber 25 through the insertion hole 25b of the cylinder partition wall 25a. Is slidably penetrated, and an adjusting nut 29 for setting the position of the adjusting valve body 7 at the time of a large flow rate is attached to the small flow rate adjusting screw 28a at the tip end together with the fixing nut 29a. In the second cylinder chamber 25, a working chamber 25d is formed on the adjusting valve body 7 side of the second piston 24, to which working air is supplied from an air supply / exhaust hole 25c. An adjusting ring 30 for setting the position of the adjusting valve body 7 at the time of the medium flow rate is attached to the medium flow rate adjusting screw 21a formed at the end of the cylinder barrel 21, and the second piston 2
Reference numeral 4 is configured to be slidable between the adjusting ring 30 and the cylinder partition wall 25a. The adjusting nut 29 passes through the inside of the adjusting ring 30 and can come into contact with the second piston 24.

Therefore, as shown in FIG. 6, when the compressed air is supplied from the air supply / exhaust hole 22e to the projecting chamber 22c, the regulating valve body 7 is projected and moved through the first piston 23, and is moved to the cylinder partition wall 25a. Abutted second piston 2
The adjustment nut 29 hits the end face of the valve 4, the adjustment valve body 7 is stopped, and a small flow state in which the flow path 4 is throttled to the maximum is formed. Adjustment of this small flow rate state is performed by the adjustment nut 29.

Next, as shown in FIG. 7, the air supply / exhaust holes 22f are provided.
By supplying compressed air from the retreat chamber 22d to the retreat chamber 22d and discharging compressed air from the projecting chamber 22c, the adjusting valve body 7 is retracted via the first piston 23, and the first piston 23 contacts the cylinder partition wall 25a. A high-speed filling state is formed in which the channels 4 are in contact with each other and the flow path 4 is opened to the maximum.

Further, as shown in FIG. 8, the air supply / exhaust hole 25c.
By supplying compressed air to the working chamber 25d from
The adjustment nut 29 and the adjustment rod 28 are slid outward until the second piston 24 contacts the adjustment ring 30.
The adjusting valve body 7 is retracted via the, and a medium speed filling state is formed. Therefore, the amount of protrusion of the adjusting valve body 7 at the time of medium speed filling can be adjusted by the adjusting ring 30.

Furthermore, the on-off valve body 2 is changed from the medium speed filling state.
After the flow path 4 is closed by, the compressed air is supplied to the retreat chamber 22b, and the compressed air is discharged from the projecting chamber 22c and the working chamber 25d, whereby the adjusting valve body 7 is retracted and the flow path 4 And the filling liquid in the nozzle barrel 6 is sucked, and the filling liquid at the outlet of the nozzle barrel 6 is moved to the nozzle barrel 6 by a predetermined height S.
It is possible to prevent liquid dripping by sucking inside.

As shown in FIGS. 3 and 4, a filling liquid (for example, mayonnaise) that is highly viscous but contains oil easily drips near the tip outlet of the nozzle cylinder 6 without fail. In order to prevent the above, by providing one partition plate 31 at a predetermined position along the axial direction at a radial position, the cross-sectional area of the nozzle cylinder 6 is reduced and the surface of the suctioned filling liquid is partitioned. The plate 31 is brought into contact with the plate 31, and the surface tension of the filling liquid is effectively exerted. Of course, the partition plate 31 is not necessary in the case of a filled liquid with little liquid dripping, but in the case of severe liquid dripping,
A plurality of partition plates may be provided.

Next, the filling state of the highly viscous liquid into the container will be described with reference to FIGS. 9 and 10. First, at the initial stage of filling, as shown in FIG. 9A, when the highly viscous filling liquid L is poured into the bottom portion b of the container B, the adhesive force of the filling liquid L to the bottom surface a of the container B is large. Slowly spread outward from the downflow position. Here, if the end point velocity of the filling liquid L is high, the filling liquid L rises at the downflow position as shown by the phantom line, and the filling liquid L spreads in a crushed state due to its own weight. Then, the filling liquid L becomes the container B.
Since the air inside will be entrained and foamed, the filling liquid L may overflow from the container B in the latter half of the filling operation, the quality of the filling liquid L may be adversely affected, and the filling amount may vary. Therefore, in the present invention, the problem is solved by sufficiently slowing the filling speed in the initial stage of filling.

Next, the filling liquid L is applied to the entire bottom surface a of the container B.
Spread, the supplied filling liquid L spreads along the already spread surface of the filling liquid L ', as shown in FIG. 9 (b). At this time, since the adhesive force between the filling liquids L and L'is small, the liquids spread at high speed and high-speed filling becomes possible. By the way, when the cross-sectional area of the container B along the horizontal plane is constant, the rising height of the liquid at the downflow position is constant at a constant filling speed. However, as shown in FIG. 10, the container B has, for example, a hook- and- loop shape or the like, whose cross-sectional area changes from wide to narrow as it goes upward.
Then, the rising height of the liquid at the flow-down position becomes high, and when it exceeds a predetermined fixed amount, the liquid is crushed by its own weight and air is entrained and foamed. Therefore, in the present invention, as shown in FIG. 10, the filling speed of the filling liquid L is changed in two stages such that the filling speed is high in the first half and medium in the second half, and this is solved.

Although the filling amount is controlled by measuring the container B with a measuring device, in the latter half of the filling, the lower the filling speed is, the smaller the variation of the filling amount is, and the filling can be performed accurately.

The filling operation of the high-viscosity liquid into the container by the liquid filling device will be described below with reference to FIGS.
This will be described with reference to FIG. ． When the container is carried in below the filling device, the container or the filling device is moved up and down to insert the nozzle tube 6 into the mouth portion of the container or to approach it upward.

.. As shown in FIG. 5, compressed air was supplied to the protruding chamber 22c of the adjustment / suction device 8 so that the adjusting valve body 7 was protruded to the low speed filling position, and the flow passage 4 was formed in a small flow rate state where it was throttled to the maximum. After that, as shown in FIG. 6, compressed air is supplied to the opening chamber 14b of the diaphragm type opening / closing device 5 to raise the opening / closing valve body 2 via the driving diaphragm 17 and the valve shaft 15, and the supply pipe 11 to the filling chamber. The filling liquid supplied to No. 3 is sent from the flow path 4 to the nozzle cylinder 6, and is injected into the container at a small flow rate with a low filling speed. Since the filling liquid slowly spreads outward from the flow-down position and is in a small flow rate state, it does not entrain air and foam.

.. When the filling liquid spreads over the entire bottom surface of the container, as shown in FIG.
Compressed air is supplied to 2d, the regulating valve body 7 is retracted via the first piston 23, the flow path 4 is opened to the maximum, and the filling liquid is supplied in a large flow rate state in which the filling speed is the highest. The rising amount of the filling liquid at the flow-down position is set so as not to be crushed by the dead weight of the filling liquid to cause air entrapment and foaming even in the smallest cross-sectional area of the container at the position where the liquid is supplied at this large flow rate. There is.

.. When the filling operation reaches the predetermined position in the latter half, as shown in FIG. 8, the retreat chamber 2 of the adjustment / suction device 8 is used.
The compressed air of 2d is discharged, the compressed air is supplied to the working chamber 25d, and the adjusting nut 29 moves to the second piston 2
The adjusting valve body 7 is retracted until it comes into contact with the valve 4, and the flow path 4 is throttled to form a medium flow rate state in which the filling speed is intermediate. As a result, the amount of swelling of the filling liquid at the flow-down position is controlled according to the reduced cross-sectional area of the container, and foaming is prevented. ． When the weight of the container reaches a predetermined amount, as shown in FIG. 1, compressed air is supplied to the closing chamber 14a of the diaphragm type opening / closing device 5, and the opening / closing valve body 2 is lowered by the driving diaphragm 17 so that the flow path 4 is formed. It is closed and the supply of the filling liquid is stopped. Thereafter, compressed air is supplied to the retreat chamber 22d to retract the adjusting valve body 7, whereby the filling liquid in the flow path 4 and the nozzle cylinder 6 is sucked, and the filling liquid at the outlet of the nozzle cylinder 6 is stored in the nozzle cylinder 6. Aspirate into. Therefore, even with a highly viscous liquid containing oil, the partition plate 31 reduces the cross-sectional area of the nozzle cylinder 6, so that the surface tension of the filling liquid works effectively and the liquid drop is surely prevented. You can ． CIP (Clea that cleans the filling device without disassembling
In the case of performing ning In Piace) cleaning, a high-pressure cleaning liquid is supplied from the supply pipe 11 into the filling chamber 3 to form a swirling flow, and the cleaning liquid is discharged from the nozzle cylinder 6 while being effectively cleaned.

According to the above-described embodiment, the filling speed is changed at the initial stage of filling and after that, and the filling rate is changed so as to prevent the swelling of the downflow position from increasing corresponding to the cross-sectional area of the container. A highly viscous filling liquid can be efficiently supplied at high speed without causing air to be entrained in the container and foaming.

After the filling is completed, the liquid at the outlet of the nozzle cylinder 6 can be sucked by retreating the adjusting valve body 7, liquid dripping can be prevented and contamination of the nozzle, container, etc. can be prevented and the filling amount can be prevented. The accuracy of can be improved. At the outlet of the nozzle cylinder 6, if it is a normal viscous filling liquid, the liquid can be completely drained in a straight shape, but it is oil-containing and highly viscous, but it is difficult with a liquid such as mayonnaise that is easy to drip. However, in the above-described embodiment, by providing one partition plate 31 in the vicinity of the outlet of the nozzle cylinder, the cross-sectional area of the nozzle cylinder 6 is reduced, the surface tension of the filling liquid is effectively exerted, and liquid dripping is ensured. It can be prevented.

Further, since the liquid contact portion is constituted by the pipe-shaped component, the sealing bellows 26, the sealing diaphragm 16 and the on-off valve body 2, the cleaning is performed by the cleaning liquid supplied from the supply pipe 11 at a high pressure without being decomposed. The cleaning liquid having a low viscosity can be swirled in the filling chamber 3 while being swirled in the nozzle cylinder 6
Since it is sent to, more effective cleaning is possible, and even when it is used to fill different liquids as well,
It can be used only by this CIP cleaning, and the maintenance can be simplified even with a filling liquid for foods that requires frequent maintenance, which is extremely effective.

Further, when the liquid filling device adopted in the weight type filling machine for filling while measuring the weight is operated by compressed air, if the opening / closing speed of the opening / closing valve body 2 varies, the filling accuracy is lowered. . If an actuator having a sliding part such as an air cylinder is used for this operating part, the operating speed changes due to changes in the ambient temperature, causing variations in the filling accuracy. In this embodiment, however, the operation of the on-off valve body 2 Since it is performed by the driving diaphragm 17, there is no sliding portion, no variation in operating time occurs, and filling can be performed with high accuracy.

Next, another embodiment of the liquid filling device used for a filling liquid having a particularly low viscosity will be described with reference to FIG. In the above-mentioned filling device, this is eccentrically supplied from the supply cylinder 11 into the filling chamber 3, so that the liquid with low viscosity forms a swirling flow in the filling chamber 3, and the outlet of the nozzle cylinder 6 is horizontally cut straight. Even the nozzle is discharged from the outlet of the nozzle cylinder 6 as a swirling flow that spreads in a conical shape. The conical swirling flow hits the inner wall of the container B and flows down along the inner wall, so that it is difficult for air to be entrained and foaming even if the filling is performed at high speed. Therefore, by disposing the exhaust nozzle 41 that sucks or spontaneously discharges the air in the container B at the axial center position of the tip end portion of the nozzle cylinder 6, it is possible to effectively fill the container B with the filling liquid having low viscosity. You can The divergence angle when discharging the filling liquid is the nozzle cylinder 6
Can be easily controlled by the length of.

According to the above-described embodiment, the low-viscosity filling liquid is supplied from the supply cylinder 11 to the eccentric position in the filling chamber 3 and swirled, so that the filling liquid is conical from the nozzle cylinder 6 of the straight nozzle. It can be discharged into the container B as a swirling flow that spreads, and the liquid flowing down along the inner wall of the container B does not easily foam, so that high-speed filling is possible. Further, the outlet of the nozzle cylinder 6 may be a straight nozzle, which is extremely advantageous in terms of manufacturing cost and maintenance.

[0037]

As described above, according to the invention of claim 1, the flow rate can be controlled by reducing and expanding the cross-sectional area of the flow passage on the downstream side of the on-off valve body by the adjusting valve body. As a result, the filling speed corresponding to the spread of the liquid can be selected at the flow-down position in the container, and the filling can be efficiently performed in a short time without foaming. That is, the high-viscosity filling liquid supplied from the nozzle cylinder first spreads outward from the downflow position along the bottom surface of the container, and further spreads outward along the already spread surface of the filling liquid. Is excessively supplied, the filled liquid spreads in a state of being crushed by its own weight. At this time, air is entrained and a large amount of bubbles are generated in the filling liquid. However, by controlling the filling speed of the filling liquid in consideration of the spreading speed due to the viscosity of the filling liquid and the cross-sectional area of the container, it is possible to prevent foaming of the filling liquid before filling efficiently and in a short time. it can.

Further, after stopping the filling liquid by the opening / closing valve body,
By retracting the adjusting valve body, the filling liquid at the nozzle barrel outlet can be sucked into the nozzle barrel, preventing dripping and preventing contamination of the nozzle and container, and improving the accuracy of the filling amount. You can

According to the fifth aspect of the invention, when the viscosity is large and the spreading speed is low at the initial stage of filling, the filling speed is slowed down, and when the filling liquid spreads to the bottom surface of the container, the spreading speed becomes fast and then the filling speed increases. Can be filled more efficiently without foaming, for example, in the latter stage of filling when the cross-sectional area of the container is small, the filling speed can be slowed somewhat to prevent foaming and fill efficiently in a short time. You can

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of a liquid filling device according to an embodiment of the present invention in a filling stopped state.

FIG. 2 is a sectional view taken along line I-I shown in FIG.

FIG. 3 is a vertical cross-sectional view of the nozzle cylinder outlet of the liquid filling device.

4 is a sectional view taken along line II-II shown in FIG.

FIG. 5 is a longitudinal sectional view showing a filling start preparation state of the liquid filling device.

FIG. 6 is a vertical sectional view showing a low speed filling state of the liquid filling device.

FIG. 7 is a vertical cross-sectional view showing a high-speed filling state of the liquid filling device.

FIG. 8 is a vertical cross-sectional view showing a medium speed state of the liquid filling device.

9 (a) and 9 (b) each show a filling state of a highly viscous filling liquid, FIG. 9 (a) shows a state at the beginning of filling, and FIG. 9 (b) shows a filling state after that.

FIG. 10 is a diagram showing a relationship between a filling speed into a container of the liquid filling device and a position of an adjusting valve body.

FIG. 11 is a vertical cross-sectional view showing another embodiment of a liquid filling device for filling a low-viscosity filling liquid.

[Explanation of symbols]

1 case body 2 Open / close valve body 3 filling room 3b Seat receiving surface 4 channels 5 Diaphragm type switchgear 6 nozzle tube 7 Adjustment valve body 11 supply pipe 14 Drive room 15 valve shaft 16 Sealing diaphragm 17 Drive diaphragm 21 cylinder tube 22 1st cylinder chamber 23 1st piston 24 Second piston 25 Second cylinder chamber 26 Bellows for seals 29 Adjustment nut 30 adjustment ring

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-7-52902 (JP, A) JP-A-58-171302 (JP, A) Actually opened 64-29199 (JP, U) Actually opened 57- 80497 (JP, U) S. 42-20119 (JP, Y1) (58) Fields investigated (Int.Cl. ⁷ , DB name) B65B 3/00-3/36 B65B 39/00-39/14 B67C 3/00-11/06

Claims (6)

(57) [Claims] 1. A case main body in which a filling chamber and a flow passage communicating with the filling chamber are formed, a nozzle cylinder communicating with the flow passage is vertically provided, and an opening / closing valve body for opening and closing the flow passage is provided. Provided in the flow path on the downstream side of the valve body is an adjustment valve body that moves in and out of the flow path to reduce and expand the flow passage cross-sectional area and change the filling speed. Then, an adjusting / combining suction means for controlling so that the filling speed is low at the initial stage, and then at a high speed, and then the filling speed is slowed down is provided, and the adjusting / combining suction means is an elastic sealing bellows for covering the adjusting valve body. And a liquid which is configured to suck the filling liquid at the nozzle cylinder outlet into the inside by retracting the adjustment valve body to the outside of the flow path with the on-off valve body closed at the end of filling. Filling device. 2. The liquid filling device according to claim 1, wherein a partition plate is provided near the outlet of the nozzle cylinder along the axial direction. 3. An on-off valve mechanism including an on-off valve body is constituted by a diaphragm valve, and by supplying a high-pressure cleaning liquid from a supply port communicating with the filling chamber, the inside of the filling chamber and the nozzle cylinder can be cleaned. The liquid filling device according to claim 1, wherein the liquid filling device is provided. 4. A swirl flow of the filling liquid is formed in the filling chamber by displacing the axis of the supply cylinder for supplying the filling liquid to the filling chamber with respect to the axis of the filling chamber. The filling liquid discharged from the outlet of the nozzle cylinder is made into a swirling flow that spreads outward in a conical shape, and a suction nozzle for sucking the air inside the container is arranged at the outlet axial center position of the nozzle cylinder, and the filling liquid is a low-viscosity liquid. The liquid filling device according to claim 1 or 3, characterized in that. 5. When filling a highly viscous liquid into a container whose cross section changes in the vertical direction, the nozzle cylinder is inserted into the mouth of the container or brought closer to the upper side to stop, and the liquid is supplied from the nozzle cylinder. At the beginning of filling, low-speed filling is performed so that the filling liquid that rises to the downflow position at the bottom of the container is not crushed by its own weight, and when the filling liquid spreads over the entire bottom surface of the container, the supply flow rate of the filling liquid increases and filling Corresponding to the rising amount of the filling liquid that becomes higher as the cross-sectional area of the container at the liquid height becomes narrower, the liquid supply flow rate is controlled to high speed filling when the rising amount is low and medium speed filling when the rising amount is high. A method for filling a highly viscous liquid into a container, which comprises filling the container with a high viscosity liquid. 6. The method of filling a highly viscous liquid in a container according to claim 5, wherein the liquid at the tip of the nozzle cylinder is sucked into the nozzle cylinder after stopping the liquid in the latter half of the filling.