JPH09207914A - Liquid filling nozzle device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the clogging due to a dry-solidification of a content remaining in the leading end nozzle after a filling operation for a liquid filling nozzle device. SOLUTION: This liquid filling nozzle device is equipped with an external cylinder 1 being equipped with a leading end nozzle 2 at the lower end, and a filler content feeding port 6 at an upper part, a movable shaft 11 which is fitted in the external cylinder 1 and is slidably movable by an actuator 18 being attached to the top of the external cylinder in the vertical direction, a movable valve 15 which is attached at the lower end part 13 of the movable shaft 11 slidably in the longitudinal direction of the movable shaft 11, and is urged downward in the longitudinal direction, and comes into contact with the upper internal surface of the leading end nozzle 2, and a cylindrical valve seat 14 which can be tightly joined to the peripheral surface of the movable valve 15. Then, blow air (a) which is fed through an air passage 12 which goes through the inside of the movable shaft 11 from the upper end to the lower end 13, is jetted from the leading end nozzle 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filling nozzle used for filling and packaging a fluid content such as a liquid in a container, and the content is dried at the tip of the content outlet of the filling nozzle after use. The present invention relates to a liquid filling nozzle device that is solidified to prevent clogging of the tip of the filling nozzle.

[0002]

2. Description of the Related Art As shown in FIG. 4, a conventional liquid filling nozzle device A has an outer cylinder 21 having a tip nozzle 22 at its lower end.
A movable shaft 26 connected to a rod 29a of an air cylinder 29 attached to the upper end of the outer cylinder 21 is vertically movably mounted inside, and an open / close valve 27 provided at the lower end of the movable shaft 26 is provided with an air cylinder 29. Up and down by
The discharge port 23 inside the tip nozzle 22 can be opened and closed. Reference numeral 24 is a discharge hole below the discharge port 23 inside the tip nozzle 22, and 28 is a cylindrical elastic member that blocks the movable shaft 26 side and the rod 29a side.

When the container B is filled with the fluid content c using the conventional filling nozzle device A, the tip nozzle 22 is brought close to the container B, and the contents provided on the side of the outer cylinder 21. The content c is supplied by pressure from the material supply pipe 25 while applying a predetermined filling pressure, and the movable shaft 26 is moved by the air cylinder 29.
To raise the on-off valve 27 that closes the discharge port 23 to open the discharge port 23, so that the content c passes through the outer cylinder 21 and a predetermined filling pressure is applied to the tip nozzle 2
After filling from 2 and filling the container B with a fixed amount of contents, the movable shaft 26 is moved downward by the air cylinder 29 and the discharge port 23 is closed by the opening / closing valve 27 to end the fixed amount filling operation.

[0004]

Since the filling nozzle spreads the contents during filling, when filling a container having a narrow filling port, the nozzle tip is narrowed down and the contents are concentrated in the filling port. However, if a filling nozzle having such a structure is used, the contents may remain at the nozzle tip portion of the tip nozzle 22 and clogging may occur.

In particular, in the case where the content is a fluid containing fine particulate solids, even if the content is smoothly filled by the filling pressure during filling, after the use when the filling pressure is released, the granular material is used. Solid matter remains solidified in the discharge hole 24,
Similarly, the discharge holes 24 are likely to be clogged.

The present invention is to eliminate clogging that tends to occur in the tip nozzle after the above filling operation in a liquid filling nozzle apparatus, particularly in a liquid filling nozzle apparatus in which the nozzle tip is narrowed down.

[0007]

According to the present invention, an outer cylinder 1 is provided with a tip nozzle 2 at the lower end and a filling content supply port 6 at the upper part.
A movable shaft 11 mounted inside the outer cylinder 1 and slidable in the vertical direction by an actuator 18 attached to the upper part of the outer cylinder 1, and a lower end portion 13 of the movable shaft 11.
Cylindrical valve seat 14 mounted downward on the
And the movable shaft 11 at the lower end 13 of the movable shaft.
A valve face body that is slidably mounted in the longitudinal direction of the valve seat, is urged downward in the longitudinal direction, contacts the upper inner surface of the tip nozzle 2 without closing it, and can be in close contact with the inner peripheral surface of the valve seat 4. A movable valve 15 having a valve seat 14 and a movable valve 15 formed by an ascending operation of the movable shaft 11 and an air passage 12 communicating from the upper end to the lower end 13 of the movable shaft 11. Blow air a supplied through the gap
The liquid filling nozzle device is characterized in that the liquid is ejected from the tip nozzle 2.

According to the present invention, in the liquid filling nozzle device of the above invention, the valve face member 15b has a dome shape, a hemispherical shape,
It is a liquid filling nozzle device having any of a truncated cone shape.

According to the present invention, in the liquid filling nozzle device of the above-mentioned invention, a space having a shape having a smaller diameter toward the tip direction is formed inside the upper portion of the tip nozzle 2, and the space is provided on the tip side of the movable valve 15. The liquid filling nozzle device is integrally provided with an abutting body 5 which is mounted on the inner surface of the space and has a kerf passage 5a formed on the outer surface toward the front end direction and has a shape having a smaller diameter toward the front end direction.

According to the present invention, in the liquid filling nozzle device of the above invention, the abutting body 5 has an inverted dome shape, an inverted hemispherical shape,
It is a liquid filling nozzle device having any of an inverted truncated cone shape.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The liquid filling nozzle device of the present invention is
Detailed description will be given below in accordance with the embodiment shown in FIGS. 1 (a) to 1 (c) and FIG.

[Regarding Outer Cylinder and Movable Shaft] FIG.
(A) is the whole side view which shows the partial cross section of the apparatus of this invention, The outer cylinder 1 equips the lower end part with the front end nozzle 2, and this nozzle 2 is equipped with the 1 to several discharge hole.

A filling material supply port 6 is provided on the upper side of the outer cylinder 1, and the contents c for filling are pressure-fed from the outside into the outer cylinder 1 at a predetermined filling pressure. Supplied.

The movable shaft 11 is mounted in the outer cylinder 1 so as to be linearly movable up and down. An actuator 18 such as an air cylinder attached to the upper part of the outer cylinder 1 vertically moves the movable shaft 11 with a predetermined stroke length. It can slide in any direction.

[Valve Seat and Movable Valve] The movable shaft 1 is provided at the lower end portion 13 of the movable shaft 11.
Movable valve 15 which is linearly slidable in the longitudinal direction of 1
Is rotatably attached, and is constantly urged downward in the longitudinal direction of the movable shaft 11 by an elastic member 16 such as a spring or a spring, so that the lower end portion 13 of the movable shaft 11 is
It projects further downward.

At the lower end portion 13 of the movable shaft 11, a cylindrical valve seat 14 made of rubber or resin capable of covering the outer peripheral surface of the movable valve 15 from above is directed downward from the lower end portion 13. It is attached and fixed by protruding. In the present invention, as long as the inner peripheral surface of the valve seat 14 and the outer peripheral surface of the movable valve 15 are in contact with each other over the entire circumference, the cylindrical valve seat 14 and movable valve 15 have It is not particularly limited.

The lower inner peripheral surface of the valve seat 14 and the outer peripheral surface of the movable valve 15 are elastic because the movable valve 15 is constantly urged downward by the elastic member 16 in the longitudinal direction of the movable shaft 11. The members 16 are always separated from each other.

The lower end 13 of the movable shaft 11 is provided with an air passage hole 13a communicating with the air passage 12 inside the movable shaft 11.

[Operation of the movable shaft and the movable valve]
Before mounting the movable shaft 11 in the outer cylinder 1 or in a state where the movable valve 15 is not pressed against the elastic member 16, there is a gap between the inner peripheral surface of the valve seat 14 and the outer peripheral surface of the movable valve 15. There is a gap through which air can pass, and the blow air a supplied from the air supply port 17 of the movable shaft 11 passes through the air passage 12 in the movable shaft 11 and the air passage hole 13a in the lower end 13 of the movable shaft, Injection is possible outside the gap between the inner peripheral surface of the valve seat 14 and the outer peripheral surface of the movable valve 15 that separate from each other.

As the blow air a used in the nozzle device of the present invention, normal air, an inert gas such as nitrogen (N ₂ ), or aseptic filling packaging (aseptic packaging) system is used. Steam containing (H ₂ O ₂ ) can be used together.

As shown in FIG. 1 (a), the movable shaft 11 is supported and mounted in the outer cylinder 1 by a bearing provided at an appropriate position in the outer cylinder 1 so as to be linearly movable in the longitudinal direction. The upper end of the movable shaft 11 is connected and attached to a downward operating rod 18a of an actuator 18 such as an air cylinder. The movable shaft 11
As a bearing for rotatably supporting the shaft, for example, as shown in FIG.
As shown in (a), bearing 1b (content passage 1 of outer cylinder 1
It also functions as a blocking member for blocking the c side from the actuating rod 18a side of the actuator 18), and a bearing 1c that radially supports the periphery of the movable shaft 11 in plan view.

The movable shaft 1 mounted in the outer cylinder 1
The movable valve 15, which is urged and attached to the lower end portion 13 of the elastic member 16 by the elastic member 16, has the outer cylinder 1 at the upper stop point position and the lower stop point position when the movable shaft 11 is moved up and down by the actuator 18. The content c for filling can be smoothly sent to the inner surface of the upper part of the tip nozzle 2 in the direction of the discharge hole of the tip nozzle 2 and is always in contact with the tip nozzle 2 so as not to close the tip nozzle 2. The movable valve 15, which is constantly urged downward by the elastic member 16 in the longitudinal direction of the movable shaft 11 when the movable member 11 moves up and down relative to the outer cylinder 1, is a tip nozzle of the outer cylinder 1. It is always in contact with the inner surface of the upper part of 2 and maintains a stationary state relative to the outer cylinder 1.

[Details of Tip Nozzle] As shown in the bottom view of the tip nozzle of FIGS. 1A and 1B and the partially enlarged side sectional view of FIG. A plurality of discharge holes communicating with the inside are provided, a discharge hole 3 is formed at the center of the tip nozzle 2, and the discharge hole 3 is surrounded so that the discharge holes 3 converge in the tip direction. A plurality of discharge holes 4 are provided in the.

[Details of Movable Valve] FIG. 1C shows the movable valve 15.
FIG. 2 is an overall perspective view showing the embodiment of FIG.
Is a support shaft portion 15a that is axially supported by a lower end portion 13 of the movable shaft 11 so as to be vertically movable and is urged downward by an elastic member 16, and the cylindrical valve seat 14
Valve face body 15b having a dome-shaped or hemispherical-shaped or frustoconical outer peripheral face covered by the inner peripheral surface of the valve Alternatively, it is integrally provided with an abutting body 5 having an outer peripheral surface of an inverted truncated cone shape.

On the peripheral surface of the abutting body 5, a plurality of kerf passages 5a for passing the filling contents c (and blow air a) toward the center of the lowermost peripheral surface are carved. ing.

As shown in FIG. 1 (a), the inside of the lower end of the outer cylinder 1 (the inside of the upper portion of the tip nozzle 2) is provided with a recessed portion into which the abutting body 5 is fitted. The abutment body 5 of the movable valve 15 is fitted into the valve face body 1 of the movable valve 15 so that the outer peripheral surface thereof and the inner surface of the concave portion are in close contact with each other.
5 b has a function of opening and closing blow air by opening and closing with the valve seat 14, and the abutment body 5 has an aperture grill function inside the upper portion of the tip nozzle 2.

[Details of Valve Seat] As shown in the partial enlarged side sectional views of FIG. 1 (a) and FIG. 2, the cylindrical valve seat 14 is provided with respect to the outer peripheral surface of the valve face body 15 b of the movable valve 15. The shape is such that it can be in close contact with the entire circumference, for example, the inner diameter of the cylindrical valve seat 14 has the same inner diameter from the upper end to the lower end, or is tapered from the upper end to the lower end. As shown in FIG. 1 (a) or FIG. 2, the lower end of the cylindrical valve seat 14 is the outer peripheral surface of the valve face body 15b of the movable valve 15 (the lower outer peripheral surface and / or the upper outer periphery thereof). It may be formed in a curved shape so as to follow any surface.

[Explanation of Operation by Nozzle Device of the Present Invention] FIG. 2 is a partially enlarged side sectional view of the nozzle device of the present invention, showing a state in which the movable shaft 11 is lowered to the bottom stop position by the actuator 18, FIG. 3 is a partially enlarged side sectional view of the nozzle device of the present invention, showing the state in which the movable shaft 11 is moved up to the upper stop point position by the actuator 18.

[Discharging Operation / Discharging Stop Operation of Liquid Content] As shown in FIGS. 2 and 3, the content supply port 6
The filling liquid content c supplied from (see FIG. 1) is
From the passage 1a inside the outer cylinder 1, the gap between the inner surface of the outer cylinder 1 and the outer periphery of the lower end portion 13 of the movable shaft 11, the gap between the inner surface of the outer cylinder 1 and the outer periphery of the valve seat 14, and the cutting of the contact body 5. The gas is discharged from the discharge holes 3 and 4 of the tip nozzle 2 through the groove passage 5a.

The discharge operation of the content c from the tip nozzle 2 is performed by starting the feeding (pressure feeding) of the content c from the content supply port 6 (see FIG. 1) into the outer cylinder 1. The discharge stop operation is performed by stopping the feeding (pressure feeding) of the content c from the content supply port 6 to the inside of the outer cylinder 1.

[Blow Air Discharge Operation] As shown in FIG. 3, the discharge operation is performed when the movable shaft 11 is in the state of being raised to the upper stop point position by the drive of the actuator 18 (see FIG. 1). .

While the movable shaft 11 is moving upward, the lower end portion 13 of the movable shaft 11 is moved.
As shown in FIG. 3, the inner peripheral surface of the cylindrical valve seat 14 mounted downwardly on the valve seat 14 is not pressed against the outer peripheral surface of the movable valve 15, and the inner peripheral surface of the valve seat 14 and the movable valve 15 are not pressed. The air passage hole 1 is separated from the outer peripheral surface of
3a and the discharge holes 3 and 4 of the tip nozzle 2 are opened,
Air passage 1 inside the movable shaft 11 from the air supply port 17
2 and the air passage 1 at the lower end 13 of the movable shaft 11
The blow air a supplied through the nozzle 3a is the tip nozzle 2
From the discharge holes 3 and 4.

[Blow Air Discharge Stop Operation] On the other hand, in the discharge stop operation, as shown in FIG. 2, the movable shaft 11 is moved down to the lower stop position by the drive of the actuator 18 (see FIG. 1). If done.

While the movable shaft 11 is descending in this manner, the lower end portion 13 of the movable shaft 11 is moved.
2, the inner peripheral surface of the valve seat 14 is pressed against the outer peripheral surface of the movable valve 15, and the inner peripheral surface of the valve seat 14 and the outer peripheral surface of the movable valve 15 are in close contact with each other. Then, the air passage hole 13a and the discharge holes 3 and 4 of the tip nozzle 2 are closed, and the air passage 12 inside the movable shaft 11 and the movable shaft 1 from the air supply port 17 are closed.
The blow air a supplied through the air passage hole 13a in the lower end portion 13 of No. 1 does not jet from the discharge holes 3 and 4 of the tip nozzle 2.

The nozzle device according to the present invention is provided with the contents c in a container.
During the filling operation of, the movable shaft 11 is continuously lowered by the actuator 18 to the lower stop point position, and blow air a is not jetted from the tip nozzle 2.

After all the contents c have been filled in the container, or each time an appropriate number of containers have been filled, the movable shaft 11 is moved up to the upper stop point by the actuator 18, and the tip end is moved. Blow air a is ejected from the nozzle 2 to blow away and remove the content c remaining in the discharge holes 3 and 4 of the tip nozzle 2.

The supply of the blow air a from the supply port 17 may be started in synchronization with the end timing of the filling operation of the contents c, or may be started before or after the end. Alternatively, the supply state may be maintained at all times.

[0038]

The liquid filling nozzle device of the present invention is provided with a blow-air jetting start / jetting stop mechanism by means of a movable valve and a valve seat that moves up and down inside the tip nozzle that discharges the contents for filling. Blow air can be blown out from the discharge hole of the tip nozzle to blow away and remove the contents remaining inside the discharge hole after the filling operation is completed. Therefore, there is an effect that it is possible to prevent the discharge hole from being clogged.

Further, when the content is a fluid containing fine particulate solid matter, the solid matter remaining inside the discharge hole of the tip nozzle after the filling operation is completed can be blown off and removed. Therefore, there is an effect that it is possible to prevent the solid particles from remaining and solidifying in the discharge holes and similarly causing clogging of the discharge holes.

[Brief description of drawings]

1A is an overall side sectional view of a liquid filling nozzle device of the present invention, FIG. 1B is a bottom view of a tip nozzle of the liquid filling nozzle device of the present invention, and FIG. 1C is a liquid filling nozzle device of the present invention. 3 is a partially enlarged perspective view of the movable valve in FIG.

FIG. 2 is a side cross-sectional view of a tip nozzle portion in a blow air ejection stop operation of the liquid filling nozzle device of the present invention.

FIG. 3 is a side sectional view of a tip nozzle portion in a blow air jetting operation of the liquid filling nozzle device of the present invention.

FIG. 4 is an overall side sectional view of a conventional liquid filling nozzle device.

[Explanation of symbols]

A ... Liquid filling nozzle device B ... Container a ... Blow air
c ... filling 1 ... outer cylinder 1a ... filling passage 1b ... bearing 1c ... radial bearing 2 ... tip nozzle 3, 4 ... discharge hole 5 ... contact body 5a ... kerf passage 6 ... filling supply port 11 ... movably movable Shaft 12 ... Air passage 13 ... Movable shaft lower end 13a ... Air through hole 14 ... Valve seat 15 ... Movable valve 15a ... Support shaft 15b ... Valve face body 16 ... Elastic member 17 ... Blow air supply port 18 ... Actuator 21 ... Outer cylinder 22 ... Tip nozzle 23 ... Discharge port 24 ...
Discharge hole 25 ... Filling material supply port 26 ... Movable movable shaft 27 ...
Valve body 28 ... Expanding member 29 ... Actuator 29a ... Actuating rod

Claims (4)

[Claims] 1. An outer cylinder 1 having a tip nozzle 2 at a lower end and a filling content supply port 6 at an upper part, and an actuator 18 mounted in the outer cylinder 1 and attached to an upper part of the outer cylinder 1. And a movable shaft 11 slidably movable in the vertical direction, a cylindrical valve seat 14 mounted downward on a lower end portion 13 of the movable shaft 11, and a lower end portion 1 of the movable shaft 1.
3 is slidably attached to the movable shaft 11 in the longitudinal direction, is urged downward in the longitudinal direction, contacts the upper inner surface of the tip nozzle 2 without closing, and the inner peripheral surface of the valve seat 4. Valve face 1 that can be in close contact with
And a movable valve 15 having a movable shaft 11
Blow air a supplied through the air passage 12 communicating from the upper end portion to the lower end portion 13 thereof and the gap between the valve seat 14 and the movable valve 15 formed by the upward movement of the movable shaft 11 to the tip nozzle. 2. A liquid filling nozzle device characterized in that it is ejected from 2. 2. The liquid filling nozzle device according to claim 1, wherein the valve face member 15b has a dome shape, a hemispherical shape, or a truncated cone shape. 3. A space having a shape that becomes smaller in diameter toward the tip direction is formed inside the upper portion of the tip nozzle 2, and is mounted on the inner surface of the space on the tip side of the movable valve 15 and in the tip direction on the outer surface. The liquid filling nozzle device according to claim 1 or 2, wherein an abutment body (5) having a shape having a narrower diameter toward a tip direction is formed integrally with which a kerf passage (5a) is formed. 4. The liquid filling nozzle device according to claim 3, wherein the contact body 5 has an inverted dome shape, an inverted hemisphere shape, or an inverted truncated cone shape.