JPH06345193A - Liquid filling apparatus - Google Patents

Abstract

PURPOSE:To eliminate need for each spacer for filling contents to facilitate filling of contents by accommodating desired contents only by filling and adjusting height of a lifter and a liquid reservoir by means of an elevating mechanism of the liquid reservoir when setting of contents in a container is to be changed. CONSTITUTION:When a container mounted on a lifter 42 is raised, a mouth of the container is brought into contact with a packing 52 of a container seal ring 53 and also lower ends of a vent tube 60 and a main liquid nozzle 70 are inserted into the container. When a two-way lever 91 of a driving mechanism 90 is used to raise a filling valve 80 to open a lift valve 82, pressed gas in a liquid reservoir 40 enters the container though a gas passage 43 and also fills a gas chamber 46 through a connection groove 70b. Gas pressure in the gas chamber 46 raises the main liquid nozzle 70 against a spring 71 to have a liquid valve 45 opened. As a result, liquid charged in the liquid reservoir 40 is put into the container from a liquid passage 44. On the other hand, the gas in the container returns to as gas phase part of the liquid reservoir 40 through the gas passage 43 of the vent tube 60.

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 filling a container such as a can with a liquid containing gas.

[0002]

2. Description of the Related Art A conventional filling device will be described with reference to FIGS. In these figures, 11 is a filling device (liquid tank)
A valve body (12), a valve body (liquid valve seat packing) 12 installed in the liquid valve stem 12a via a seat retainer 12b and incorporated in the valve body 11, and a valve body 13 below the valve body 11. Seated in series 1
5, a nozzle head having a nozzle portion 16 and equipped with a control valve 17, and 18 is a bonnet insert which is disposed below the nozzle head 13 and has a packing 19 for the container mouth edge a2. A valve body 11 with a built-in valve body 12 which is continuously provided, and a nozzle portion 1 which is provided continuously with the valve body 11 and is inserted into a valve seat 15 and a container opening portion a1.
Nozzle head 1 having 6 and control valve 17
3 and a bonnet insert 18 that is connected to the nozzle head 13 and has a packing 19 for the container mouth edge a2 and is fitted into the container mouth a1.
Nozzle head 1 installed oppositely by 0
A spacer 3 which is arranged with a spring bias 21 toward the 3 side and is replaced between the nozzle head 13 and the bonnet insert 18.
It is a filling valve in which 0, 30a (shown in FIG. 3) is detachably inserted against the spring bias 21.

The nozzle head 13 includes a valve body 11
A plurality of guide pins 20 are attached to the lower surface side of the nozzles by screwing, and are continuously provided. An O-ring or the like is provided between the contact surface portions. The bonnet insert 18 is provided on the lower side of the nozzle head 13. It is fitted in a plurality of projecting guide pins 20 and is arranged so as to be able to move forward and backward with respect to the nozzle head 13. The method of the spring bias 21 is the guide pin 20.
Further, a washer 22, a compression spring for the spring bias 21, a guide tube 23 are provided, and a lock nut 24 is mounted, and the bonnet insert 18 is spring biased 21 to the nozzle head 13. Inside the bonnet insert 18, the container edge a2
The packing 19 that seals the seal is built in, and the sealing gasket retainer 26
Are attached with screws 25.

As shown in FIG. 5, the spacer 30 has a notch hole 31 for fitting in the central portion of the nozzle head 13, a retaining hole 32, etc., and the lower surface of the nozzle head 13 and the bonnet as shown in FIG. It is inserted and inserted between the upper surfaces of the sealing gasket retainer 26 on the insert 18 from the lateral side in the drawing. By inserting this spacer 30, the bonnet insert 18 is pressed against the lower surface of the nozzle head 13 via the spacer 30 by the spring bias 21 and the distance between the liquid surface in the container a and the container mouth edge a2, that is, the size of the container To obtain H, the insertion depth H _{1 of the} lower end of the nozzle 16 (and the control valve 17) into the container mouth a ₁
Secure.

Further, in FIG. 3, the spacer 30 is removed, and the thin spacer 30a is inserted as shown in FIG.
It can be changed to the insertion depth H ₁ 'at the lower end. Spacer 30,
The bonnet insert 1 can be attached to the 30a by an appropriate means.
8 against the spring urging 21, and is easily performed by lowering it downwards in the drawing. The protrusion 26a on the sealing gasket retainer 26
Fits into the retaining hole 32 of the spacer to prevent retaining.

The conventional example has the above-mentioned structure and its operation will be described. The bonnet insert 18 has a plurality of guide pins 20 on the lower surface side of the nozzle head 13.
It is guided so that it can be moved up and down, that is, it can be moved back and forth, and is pressed against by pressing with a spring bias 21 through a spacer (30 or 30a), into the container mouth portion a1 corresponding to the taste dimension H as shown in FIG. The insertion depth H ₁ at the lower end of the nozzle portion 16 and the insertion depth of the control valve 17 are secured.

Further, as shown in FIG. 4, in order to correspond to the taste dimension H ', a proper fitting posture of the bonnet insert 18 with respect to the container mouth portion a1 is ensured, and the nozzle portion into the container mouth portion a1 is secured. It is necessary to change the insertion depth H ₁ ′ at the lower end of the spacer 16, but when the bonnet insert 18 is pushed down against the spring bias 21 by an appropriate means and is retracted from the lower surface of the nozzle head 13, the spacer 30 is easily removed. Spacers 3 that are pulled out and have different thicknesses as shown in FIG.
When 0a is inserted and the bonnet insert 18 is released, the bonnet insert 18 moves upward from the spring bias 21.
That is, the spacer 30a is advanced toward the nozzle head 13.
The insertion depth H ₁ 'corresponding to the filling size H'is achieved by pressing through, and the spacers are retained by the protrusion 26a. The spacers can be easily and easily replaced and replaced to suit the filling size. , Done quickly.

[0008]

When the type of the filling liquid or the size of the container changes, it is necessary to change the height (filling size) of the liquid level to be filled in the container. In the prior art, the filling size of a plurality of filling devices is changed. The change spacer must be replaced. Therefore, there are the following problems. (1) It takes labor and time to replace the spacer for changing the size of the filling. (2) A number of different spacers for changing the filling size with different thicknesses are required and must be stored. (3) Since it is not possible to prepare a spacer having a stepless thickness having a stepless thickness and has a stepwise thickness, it is not possible to finely adjust the stepping dimension to an arbitrary value.

[0009]

In order to solve the above-mentioned problems, the present invention has a vent tube having a vent hole concentric with a valve body fixedly mounted in a liquid storage tank, and the valve body is hermetically sealed. Further, a main liquid nozzle is slidably fitted, a liquid passage is formed between the main liquid nozzle and the vent tube, and a liquid valve is formed at the lower ends of both. A large diameter portion is provided in the sliding portion between the main liquid nozzle and the valve body, and the main liquid nozzle is configured to move upward when the same gas pressure is applied vertically. A charging valve is installed on the upper part of the vent tube to open and close the vent hole, and a centering bell is detachably screwed on the lower part of the valve body, and a spring is urged downward on the inner peripheral part of the centering bell. The container seal ring is slidably provided. In addition, a sniff valve that can exhaust the gas in the container is installed.

That is, the present invention provides a liquid storage tank having an elevating mechanism for storing a filling liquid, a filling valve device arranged at the bottom of the liquid storage tank for filling a liquid into a container, and the liquid storage tank. In the liquid filling apparatus, the liquid storage device includes a rotary table provided below the container so as to rotate integrally with the liquid storage tank, and a lifter mounted on the rotary table to lift and lower the container. A valve body that is fixed to the tank and has a centering bell freely attached and detachably screwed to the bottom, a gas passage that is concentric with the valve body and that communicates with the liquid storage tank at the center, and the lower end has a conical shape. It has an expanded vent tube and a concentric sliding part on the valve body, and it is fitted in an airtight and slidable manner, and the sliding part has a large diameter part, the inner peripheral surface and the vent tube outer periphery. Liquid valve between the vent valve and the lower end of the vent tube. A main liquid nozzle which is formed respectively and is normally urged downward by a spring to rise upward when a gas pressure is applied to the large diameter portion from below to open the liquid valve; and a lower end outer peripheral portion of the main liquid nozzle. The centering bell is slidably fitted to the inner circumference of the centering bell and is airtightly fitted to the centering bell to form a gas chamber together with the large-diameter portion, and is biased downward by a spring so that the bottom surface has a container edge. A filling valve device is configured to include a container seal ring having a packing for use, a sniff valve that communicates the gas chamber with the outside air, and a charging valve that opens and closes the upper end of the vent tube into the liquid storage tank. The present invention provides a liquid filling device.

[0011]

Since the present invention has the above-mentioned means, when the container is lifted up to the full extent by the lifter, the container mouth is hermetically sealed by the container seal ring, and the vent tube is inserted into the container. The charging valve opens to equalize the pressure inside the container and the storage tank, and at the same time, the main liquid nozzle rises and the liquid valve opens, causing the filling liquid in the storage tank to flow down the liquid passage by gravity and fill the container. It When the filling liquid level in the container rises and reaches the lower end of the main liquid nozzle, filling stops while a part of the gas is confined. When the filling is completed, close the charging valve, open the sniff valve to exhaust the gas on the container side, lower the main liquid nozzle by the gas pressure in the liquid storage tank to close the liquid valve, and lower the lifter to perform the filling work. Will end.

Since the filling size is determined by the lower end position of the main liquid nozzle inserted in the container, in order to change the filling size, the liquid storage tank may be raised and lowered by the liquid storage tank elevating mechanism.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. In FIG. 1, reference numeral 40 is a liquid storage tank for storing a filling liquid, 41 is a rotary table that rotates together with the liquid storage tank 40, and 42 is a rotary table 41 that is mounted on the rotary table 41 and moves up and down by mounting a container such as a can or another bottle A lifter, 50 are valve bodies of a large number of filling valves fixed on the same circumference of the bottom surface of the liquid storage tank 40, 60 is a vent tube, and 70 is a main liquid nozzle. The height of the liquid storage tank 40 with respect to the rotary table 41 can be adjusted by a liquid storage tank lifting device driven by a motor (not shown).

The upper portion of the valve body 50 projects into the liquid storage tank 40, and the projecting portion has an elongated hole 50a serving as a flow path for the filling liquid.
Is provided, and a centering bell 51 for bringing the container to the center by a downward conical surface is airtightly and replaceably screwed. On the inner peripheral side of the centering bell 51, a container seal ring 53 having a packing 52 for sealing the container edge is airtightly and slidably fitted, and is urged downward by a spring 54 to descend. As far as possible, it abuts on a stopper provided on the centering bell 51.

The vent tube 60 is the valve body 50.
Is located at the axial center of the two upper and lower snap rings 61 near the upper end.
It is fixed to the upper end of the valve body 50 by a retaining ring 55 via a vane-shaped support member 62 (also shown in FIG. 2) stopped by, and the outer peripheral lower end spreads conically to form a valve body. The packing 63 is provided, and the gas passage 43 is formed in the inner peripheral portion.

The main liquid nozzle 70 is disposed between the valve body 50 and the vent tube 60, and is composed of an upper small diameter portion and a lower middle diameter portion and a large diameter portion 70a, and a lower middle diameter portion and a large diameter portion 70a. The outer peripheral portion of the portion 70a is airtightly and slidably fitted to the inner peripheral portion of the valve body 50, and the lower portion of the middle diameter portion is also slidable on the inner peripheral portion of the container seal ring 53. A plurality of communication grooves 70b that are fitted in the
Is provided.

The upper end of the small diameter portion has a male screw and is screwed to a charging valve 80, which will be described later. The portion passing through the vane-shaped support member 62 has a vertical groove 70c as shown in FIG.
Is provided in the lower portion of the small diameter portion, and a long hole 70d is provided at a position corresponding to the long hole 50a of the valve body 50, and the inner peripheral portion of the valve body 50 cooperates with the vent tube 60 to form a liquid. A passage 44 is formed, and a lower portion thereof spreads in a conical shape to form a valve seat, and a liquid valve 45 is formed together with the packing 63 below the vent tube 60. Further, the main liquid nozzle 70 is urged downward by a spring 71 interposed in the small diameter portion.

Numeral 80 is a charging valve, which is a charging cup 81 having a plurality of ventilation holes 81a and a packing 8.
3, a lift valve 82, a spring 84, a joint pipe 85, a cap nut 86, and a spring 87. The lift valve 82 is slidably fitted in the charging cup 81, is urged downward by a spring 84, and abuts against a stopper provided in the charging cup 81 to stop, and the connecting pipe 85 is charged. It is guided by the cup 81 and is urged downward by a spring 87. Further, the cap nut 86 is screwed with a male screw on the upper end of the main liquid nozzle 70 and is connected to the joint pipe 85.

Reference numeral 90 is a drive mechanism for a charging valve 80 provided on the side wall of the liquid storage tank 40, and 91 is a bifurcated lever integral with the rotary shaft 92 and a charging cup 81.
Reference numeral 93 is a lever that is engaged with the upper part of the and is fixed to the rotating shaft 92.

Reference numeral 56 is a push button type sniff valve, and when the push button is pushed, the gas inside is discharged to the outside through the exhaust hole 50d. 46 is the main liquid nozzle 7
0, the centering bell 51, and the container seal ring 53, 50b is a vacant chamber formed by recessing the valve body 50, and 50c is a hole connected to the vacant chamber 50b.

Next, the operation of the filling device of this structure will be described.

A liquid-filled tank 40 contains a filling liquid containing gas, the main liquid nozzle 70 descends, the lower end conical portion abuts the packing 63 of the vent tube 60, and the liquid valve 45 is closed. Further, the charging valve 80 descends and the packing 83 contacts the upper end of the vent tube 60 to close the gas passage 43.

The container placed on the lifter 42 rises, the rim of the container comes into contact with the packing 52 of the container seal ring 53 to hermetically seal the inside and outside air of the container, and the container seal ring is lifted to lift the container. Bent tube 6 when it stops at the upper limit
0 and the lower end of the main liquid nozzle 70 are in a state of being inserted into the container.

Here, the driving mechanism 9 is driven by a mechanism not shown.
A bifurcated lever 91 of 0 lifts the charging valve 80 and opens the lift valve 82. The pressure gas in the liquid storage tank 40 enters the container through the gas passage 43, and further fills the gas chamber 46 from the inside of the container through the communication groove 70b. The pressures in the container and the liquid storage tank 40 become uniform, and the gas pressure in the gas chamber 46 acts on the large diameter portion 70a of the main liquid nozzle 70 to raise the main liquid nozzle 70 against the spring 71 and the liquid valve 45. open. FIG. 1 shows a state in which the liquid valve 45 is open. The filling liquid in the liquid storage tank 40 flows down through the liquid passage 44 by gravity, spreads diametrically in the conical portion below the vent tube 60, and is filled in the container. At this time, the gas in the container that is replaced with the filling liquid is the gas passage 43 in the vent tube 60.
Rises up and returns to the gas phase portion in the liquid storage tank 40.

When the liquid level in the container reaches the lower end of the vent tube 60, the gas return passage is blocked, and when the liquid level reaches the lower end of the main liquid nozzle, some of the gas is confined and the filling liquid passes through the gas passage. It rises in 43, reaches the liquid level in the liquid storage tank 40, and stops. Next, the charging valve 80 is lowered, and the upper end of the vent tube 60 is closed with packing 83.
After the main liquid nozzle 70 is lowered via the spring 87 to close the liquid valve 45, the sniff valve 56 is closed by a mechanism not shown.
The gas inside the gas chamber 46 and the gas inside the container is exhausted to the outside air through the exhaust hole 50d by pressing the push button.

When the gas pressure in the container drops to the atmospheric pressure, the main liquid nozzle 70 is pushed downward by the gas pressure in the liquid storage tank 40, and the force for closing the liquid valve 45 is strengthened to return to the initial state. Hold. The filling liquid that has entered the vent tube 60 is returned to the container by the gas pressure that remains in the upper portion.

When the lifter 42 is lowered, the container seal ring 5
No. 3 descends with the rim of the container sealed and stops by abutting against the stopper of the centering bell 51. During this time, the liquid level in the container is the amount of the vent tube 60 and the main liquid nozzle 70 that are submerged in the filling liquid. And then the container leaves the container seal ring 53 to complete the filling.

The content in the container is determined by the distance H between the rim of the container and the lower end of the main liquid nozzle 70 in the raised position.
In order to change the taste, the distance between the liquid storage tank 40 and the turntable 41 may be adjusted to obtain the required H dimension.

If the diameter of the container becomes extremely large, the centering bell 51 can be replaced.

Incidentally, the vacant chamber 50b and the hole 50
The symbol c serves to adjust the back pressure of the valve 50 when the valve 50 slides, and also monitors the sealing condition of the sliding portion between the valve body 50 and the main liquid nozzle 70. Will come out.

[0031]

As described above in detail, the following remarkable effects can be obtained in the present invention.

(1) When changing the setting of the container taste, the desired taste can be dealt with just by changing and adjusting the height of the lifter and the liquid tank with the liquid tank lifting mechanism. Compared to the replacement work in which many kinds of spacers for changing the taste of the filling device are prepared and replaced, the labor and time can be saved significantly, the productivity is improved, and the economic effect is great.

(2) The filling liquid flow passage is formed by a concentric circular liquid passage and a conical outlet, and since the flow passage has a large cross-sectional area and the flow velocity can be reduced, it can also be used for containers with different diameters. You can

(3) When the container is lowered by the lifter, the vent tube immersed in the filling liquid and the seed liquid nozzle seal the rim of the container until it comes out of the liquid and lowers the liquid surface. In this case, liquid spill can be prevented.

[Brief description of drawings]

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

FIG. 2 is an exploded perspective view of a portion A of FIG.

FIG. 3 is a vertical cross-sectional view of a conventional liquid filling device.

FIG. 4 is a vertical cross-sectional view showing a spacer replacement state in a conventional liquid filling device.

FIG. 5 is a perspective view of a spacer used in a conventional liquid filling device.

[Explanation of symbols]

 40 liquid storage tank 41 rotary table 42 lifter 43 gas passage 44 liquid passage 45 liquid valve 46 gas chamber 50 valve body 51 centering bell 52 packing 53 container seal ring 56 snift valve 60 vent tube 70 main liquid nozzle 71 spring 80 charging valve 90 drive mechanism

Claims (1)

[Claims] 1. A liquid storage tank provided with an elevating mechanism for storing a filling liquid, a filling valve device arranged on the bottom surface of the liquid storage tank to fill the liquid with a container, and a liquid storage tank below the liquid storage tank. A liquid filling device including a rotary table provided so as to rotate integrally with a liquid storage tank, and a lifter disposed on the rotary table for mounting and elevating the container, and fixed to the liquid storage tank. And a vent tube having a conical bottom end which has a valve main body having a centering bell freely attached and detachably screwed to the lower part thereof, and a gas passage which is concentric with the valve main body and which communicates with the liquid storage tank in the central portion. And has a sliding portion concentric with the valve body, and is fitted in an airtight and slidable manner. The sliding portion has a large diameter portion, and is provided between the inner peripheral surface and the vent tube outer peripheral portion. To form the liquid passage, and to form the liquid valve with the outer peripheral lower end of the vent tube. , A main liquid nozzle that is normally urged downward by a spring and rises upward to open the liquid valve when gas pressure is applied to the large diameter portion from below, a lower end outer peripheral portion of the main liquid nozzle, and the centering bell. It is slidably fitted to the inner peripheral part of the container and is airtightly fitted with the centering bell to form a gas chamber together with the large diameter part, and is urged downward by a spring, and a packing for rim of the container is provided on the lower surface. A filling valve device is configured by including a container seal ring having a, a sniff valve that communicates the gas chamber with the outside air, and a charging valve that opens and closes the upper end of the vent tube in the liquid storage tank. Liquid filling device.