JP2723044B2 - Residual liquid recovery device of rotary filling machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary filling machine, and more particularly, to a rotary filling machine in which a filling valve and a collecting tank are communicated via a collecting passage to collect a washing liquid during washing of the rotary filling machine. It relates to a type filling machine.

[0002]

2. Description of the Related Art Conventionally, as a rotary filling machine, a rotary table is provided rotatably in one direction and mounts containers at circumferentially equal intervals, and a filling liquid is filled in the containers mounted on the rotary table. A plurality of filling valves to be filled, an annular liquid supply manifold provided on the rotary table, a first supply passage for supplying liquid to the liquid supply manifold, and a second supply passage connecting the liquid supply manifold to each of the filling valves. A supply passage;
There is a known type provided with a collection passage connected to each of the above-mentioned filling valves to connect each of the filling valves to the collection tank at the time of washing. When cleaning such a rotary filling machine,
First, a recovery passage was connected to each of the filling valves, and each of the filling valves was communicated with the collection tank. Next, a cleaning liquid was supplied to the first supply passage, the liquid supply manifold, and each of the filling valves to wash them. Thereafter, the cleaning liquid is recovered in the recovery tank via the recovery passage. Then, when the cleaning of each part with the cleaning liquid is completed, water is supplied to the first supply passage, the liquid supply manifold, and each filling valve, and the cleaning liquid remaining inside them is washed with water. Further, if necessary, water remaining in the passage is blown off by a subsequent air blow. By the way, the annular liquid supply manifold is omitted, and one or several first liquid supply manifolds are provided.
A configuration in which a number of second supply paths are directly connected to the supply path,
Alternatively, the first supply passage may be omitted, and a plurality of second joints may be provided in a rotary joint for supplying the filling liquid into the rotary filling machine.
When the supply passage is directly connected, the supply pressure of the filling liquid to each filling valve becomes uneven, and there is a risk that a container in which the filling liquid runs short may occur. This is especially
This was noticeable when the viscosity of the filling liquid was high. That is, the annular liquid supply manifold is provided in order to make the supply pressure of the liquid supply to each filling valve uniform.

[0003]

However, when the above-mentioned liquid supply manifold is provided, the cleaning liquid and water easily remain in the liquid supply manifold, and even when air blowing is performed, the cleaning liquid and water are sufficiently removed from the liquid supply manifold. It was difficult to blow them off. For this reason, it is necessary to increase the washing time with water so that the washing liquid does not remain, so that a large amount of water and time are required for washing, which is uneconomical. There is also a disadvantage that the remaining water is mixed into the newly supplied filling liquid. In view of such circumstances, the present invention provides a residual liquid recovery device for a rotary filling machine that can smoothly discharge a cleaning liquid or water from the liquid supply manifold even if the rotary filling machine is provided with a liquid supply manifold. Is provided.

[0004]

That is, the present invention relates to a rotary table provided rotatably in one direction and mounting containers at circumferentially equal intervals, and a liquid filled in the container mounted on the rotary table. A plurality of filling valves for filling liquid, an annular liquid supply manifold provided on the rotary table, a first supply passage for supplying liquid to the liquid supply manifold, and a first liquid supply passage connecting the liquid supply manifold to each of the charging nozzles. (2) In a rotary filling machine provided with a supply passage and a collection passage connected to each of the filling nozzles and communicating each of the filling nozzles to a collection tank during washing, a lowermost portion of the first supply passage and the liquid supply manifold is provided. and the said collection passage is located below with communicating via the bypass passage than this, only set-off valve for opening and closing the bypass passage, the opening and closing valve, washing
It is closed during cleaning, and the cleaning liquid is collected through the bypass passage.
It prevents flow to the road and opens after cleaning.
Cleaning liquid remaining in the supply passage through the bypass passage
It is designed to be discharged to a collection passage.

[0005]

According to the above construction, if the on-off valve is closed during normal filling, the supply pressure of the filling liquid to each filling nozzle can be made uniform by the liquid supply manifold, whereby Can be uniformly filled. On the other hand, when the rotary filling machine is washed, particularly when the necessary washing or washing is completed and the washing liquid or water is discharged, the on-off valve is opened each time and the first supply passage and the supply manifold are closed. since a recovery passage and the lower portion communicates through the bypass passage, thereby to easily cleaning liquid or water is left in the lowermost portion of the first supply passage and the liquid supply manifold to quickly recovery passage through the bypass passage Can be discharged. Therefore, it is possible to reduce the usage fee of water at the time of rinsing, shorten the rinsing time, and prevent the remaining water from being mixed in the newly supplied filling liquid. .

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiment. In FIG. 1, a rotary filling machine 1 includes a rotary table 2 which rotates clockwise and a feed star wheel 3 at a position adjacent to the rotary table 2. And a discharge star wheel 4. The supply starwheel 3 has a conventionally known configuration. When the holder 6 containing the container 5 is transported to the position of the supply starwheel 3 by the supply conveyor 7, the supply starwheels 3 are provided one by one from the supply conveyor 7. Each of the engagement recesses 2 on the turntable 2 being rotated at the supply position A while the holder 6 is being taken out.
a (see FIG. 2). Each holder 6 supplied to each engagement concave portion 2a on the rotary table 2 is conveyed along with the rotation of the rotary table 2, and in accordance therewith, is filled into a container 5 accommodated in each holder 6 by a filling valve described later. A predetermined amount of the filling liquid is filled. After that, the holder 6 in which the filling liquid has been filled into the container 5 is sequentially discharged from the turntable 2 at the discharge position B by the discharge star wheel 4. Next, the configuration of the rotary filling machine 1 will be described with reference to FIG. The above-described engagement recesses 2a are formed at circumferentially equal positions on the rotary table 2, and a conventionally known filling valve 9 is provided above each of the engagement recesses 2a. The filling valve 9 includes a lifting mechanism 10
Is attached to the upper end of the lifting rod 11 which is configured to move up and down the container 5 placed on the rotary table 2. A cam follower 12 is attached to the lower end of the elevating rod 11.
2 is mounted on a cam surface of a ring-shaped cam member 13 provided at a lower position. The cam surface of the cam member 13 is set to be a lower end in a moving section from a position slightly passing the supply position A to a position immediately before the discharge position B, and from the discharge position B to the supply position A. Is formed to be the rising end in the moving section up to the position. Thereby, in the section where the cam surface of the cam member 13 is the lower end, the lower end of the filling valve 9 is pressed against the upper end opening of the container 5 accommodated in the holder 6 and the section where the cam surface is the upper end. Thus, the lower end of the filling valve 9 is separated from the upper end of the container 5. Although not shown, a filling liquid tank filled with a filling liquid is provided outside the rotary table 2, and the filling liquid tank is connected to a supply pipe 16 provided at a central position of the rotary table 2. The lower end of the supply pipe 16 is connected to a fixed side of a rotary joint 17. On the rotation side of the rotary joint 17, for example, four first supply passages 18 are rotated integrally with the rotary table 2. Are connected to each other. The other end of each of the first supply passages 18 has an annular liquid supply manifold 19 provided below the filling valve 9.
Further, the liquid supply manifold 19 and each filling valve 9 are connected by a number of second supply passages 20 extending radially. Therefore, the filling liquid supplied to the supply pipe 16 from the filling liquid tank (not shown)
The liquid flows into the liquid supply manifold 19 from the first supply passage 18 via the rotary joint 17, and is further supplied from the liquid supply manifold 19 to each filling valve 9 at substantially the same pressure via the second supply passage 20. Become so. Next, as shown in FIG.
Is provided with a liquid passage 9a.
One ends of the supply passages 20 are respectively connected so that the filling liquid is supplied. A valve 21 is provided in the liquid passage 9a so as to be able to move up and down.
The liquid passage 9a can be closed when the user sits on a valve seat 9b formed at the end of the valve a. The valve element 21 is connected to a piston rod 23, and is integrally moved up and down as the piston rod 23 moves up and down. A piston 23a is attached to the upper end of the piston rod 23, and the piston 23a is fitted into the small diameter portion of the stepped cylinder 24 so as to be able to move up and down to form a first pressure chamber 25 under the piston 23a. ing. The upper part of the cylinder 24 is hermetically sealed by a sealing member 27 while maintaining airtightness. A piston rod 28 is inserted through the shaft of the sealing member 27 so as to be able to move up and down. A piston 28a having a larger diameter than the piston 23a is attached to the lower end of the piston rod 28, and the piston 28a is fitted into the large-diameter portion of the stepped cylinder 24 so as to be able to move up and down.
A second pressure chamber 29 is provided between the piston 28a and the sealing member 27.
And the piston 28a and the piston 23
A third pressure chamber 30 is formed between the first pressure chamber and the pressure chamber a. Each of the filling valves 9 is attached to each of the elevating rods 11 via a connecting member 99 attached to the upper end of the elevating rod 11, and the first pressure chamber 25 is provided with a passage 9c formed in the filling valve 9 and the connecting member. A passage 99 a formed in the rod 99, a passage (not shown) formed in the lifting rod 11, and a pressure fluid source via an electromagnetic on-off valve and a rotary joint (not shown). The second pressure chamber 29 and the third pressure chamber 30 are also connected to the pressure fluid source in the same manner as the first pressure chamber 25. Therefore, both pistons 23
When compressed air is introduced only into the third pressure chamber 30 between the first and second pressure chambers a and 28a, the upper piston 28a moves upward and the lower piston 23a moves downward, and is connected to the piston 23a via the piston rod 23. The valve body 21 seated on the valve seat 9b closes the liquid passage 9a. In addition, both pistons 2
A spring 31 is mounted between the springs 3a and 28a.
1 allows the valve element 21 to be seated on the valve seat 9b even when no pressure fluid is introduced into the third pressure chamber 30. In contrast, when compressed air is introduced only into the first pressure chamber 25, both pistons 23
In this state, since the valve body 21 is largely separated from the valve seat 9b, the liquid passage 9a has a large opening degree. In this state, that is, when compressed air is introduced into the second pressure chamber 29 from the state where compressed air is introduced into the first pressure chamber 25, the upper piston 28a has a larger diameter than the lower piston 23a. , Both pistons 28a and 23a are lowered, and the upper piston 28a is
Abuts on the step between the large-diameter portion and the small-diameter portion, and its descending stops. In this state, the valve element 21 is at a position slightly separated from the valve seat 9b, and therefore, the liquid passage 9a has a small opening degree. Further, an air nozzle 32 for blowing air at a downstream position closer to the container 5 than the valve seat 9b to cut off the dripping of the filling liquid after closing the liquid passage 9a.
Is provided. Next, in each of the filling valves 9, a first recovery passage 33 is formed on the outer peripheral side of the valve seat 9b. The first recovery passage 33 is formed between the outer peripheral surface of the lower end of each filling valve 9 and the inner peripheral surface of the cylindrical member 34 surrounding the lower end. The second collection passages 36 connected to the cylindrical member 34 are in communication with each other. As shown in FIG. 3, each of the second recovery passages 36 communicates with an annular drain manifold 35 disposed below the feed manifold 19, and the drain manifold 35 is, for example, The rotary joint 99 is connected to the rotation side of the rotary joint 99 via four third recovery passages 37, and the fixed side of the rotary joint 99 is connected to a recovery tank (not shown) via a recovery pipe 38 connected thereto. Further, in the present embodiment, the first supply passage 18 is disposed so as to be lower than the liquid supply manifold 19, and the lowermost part of the first supply passage 18 and the lower part than the lowermost part. The third recovery passage 37 is communicated with the third recovery passage 37 via the bypass passage 40. Then, as shown in an enlarged manner in FIG.
Is provided with an on-off valve 42 for opening and closing the valve. The on-off valve 42 is seated from below on the valve seat 37a provided on the third recovery passage 37 side where the bypass passage 40 is opened. And a valve element 41. The valve body 41
Is connected to the upper end of a piston rod 44 of a cylinder device 43 provided at a vertically lower position than the above, and the on-off valve 42 can be opened and closed by moving the piston rod 44 of the cylinder device 43 up and down. I can do it. A piston 44a is attached to the lower end of the piston rod 44, and a first pressure chamber 45 is formed above the piston 44a, and a second pressure chamber 46 is formed below the piston 44a. Each of the pressure chambers 45 and 46 communicates with a compressed air supply source (not shown) through air inlets 46 and 48, respectively. The piston 44a is urged upward by a spring 47, and normally the valve body 41 is The on-off valve 42 is closed by sitting on the valve seat 37a. When the rotary filling machine 1 having the above configuration is to be cleaned, a shallow cup-shaped jig 50 is attached to the holder 6 as shown in FIG. It is sequentially supplied to the recess 2a. On the other hand, a cleaning liquid is supplied to a filling tank (not shown) to clean the filling tank, and the cleaning liquid is supplied to the supply pipe 16, the rotary joint 17, the first supply passage 18, the liquid supply manifold 19, and the second supply passage 20. To the filling valve 9 In this state, when the jig 50 is conveyed to the filling start position by the rotation of the rotary table 2, the filling valve 9 is lowered, and the lower end 34 a of the tubular member 34 is pressed against the jig 50. Then
Compressed air is introduced into the first pressure chamber 25, and the two pistons 23a and 28a are raised together. As a result, the valve 21 largely separates from the valve seat 9b and opens the liquid passage 9a with a large opening. The cleaning liquid supplied to the liquid passage 9a of the filling valve 9 flows through the first recovery passage 33 and the second recovery passage 36 as indicated by arrows, and then the drainage manifold 35 and the third recovery passage 37 shown in FIG. , Rotary joint 9
9 and is collected in a collection tank (not shown) via the collection pipe 38. When the cleaning of each part is completed with the cleaning liquid in this way, the on-off valve 42 shown in FIG. 5 is opened, and the first supply passage 18 and the third recovery passage 37 are communicated via the bypass passage 40. Then, the bypass passage 40 is connected to the lowermost portion from the first supply passage 18 to the liquid supply manifold 19, and the third recovery passage 37 is located further below. The cleaning liquid remaining in the supply passage 18 and the liquid supply manifold 19 can be quickly discharged to the third recovery passage 37. When the cleaning liquid remaining in the first supply passage 18 and the liquid supply manifold 19 is discharged, the on-off valve 42 is closed, and then water is supplied instead of the cleaning liquid to wash each part. When the water washing of each part is completed, the on-off valve 42 is opened again to discharge the water through the bypass passage 40. In this case, also at the time of discharging the cleaning liquid, the air and the cleaning liquid of each part can be discharged more reliably by performing air blowing.

[0007]

As described above, according to the present invention, the supply pressure of the filling liquid to each filling nozzle can be made uniform by the liquid supply manifold at the time of normal filling, and at the time of cleaning, Since the cleaning liquid and water that are likely to remain in the first supply passage and the lowermost part of the liquid supply manifold can be quickly discharged to the recovery passage via the bypass passage, the amount of water used for water washing and the time for water washing can be reduced. Thus, it is possible to prevent the remaining water from being mixed into the newly supplied filling liquid.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing one embodiment of the present invention.

FIG. 2 is a plan view of a main part showing a delivery state of the container 5.

FIG. 3 is a sectional view taken along the line III-III in FIG. 1;

FIG. 4 is an enlarged sectional view of the filling valve 9 shown in FIG.

FIG. 5 is an enlarged sectional view of a bypass passage 40 shown in FIG. 3;

FIG. 6 is a sectional view showing the relationship between the filling valve 9 and the jig 50 during the cleaning operation.

[Description of sign]

DESCRIPTION OF SYMBOLS 1 ... Rotary filling machine 9 ... Filling valve 16 ... Supply pipe 17 ... Rotary joint 18 ... 1st supply path 19 ... Liquid supply manifold 20 ... 2nd supply path 22 ... Open / close valve 33 ... Recovery path 35 ... Drainage manifold 36 ... 1st recovery passage 37 ... 2nd recovery passage 37a ... valve seat 40 ... bypass passage 41 ... valve element 42 ... opening / closing valve 50 ... jig

Claims (2)

(57) [Claims] 1. A rotary table provided rotatably in one direction for mounting containers at circumferentially equally spaced positions, a plurality of filling valves for charging a container mounted on the rotary table with a filling liquid, An annular liquid supply manifold provided on the rotary table, and a first liquid supply manifold for supplying liquid to the liquid supply manifold.
A rotary type including a supply passage, a second supply passage communicating the supply manifold with each filling nozzle, and a collection passage connected to the filling nozzle and communicating each filling nozzle with a collection tank during washing. in the filling machine, with communicating via the bypass passage and the recovery passage located below this and lowermost portion of the first supply passage and the liquid supply manifold, set off valve for opening and closing said bypass passage , This on-off valve is closed during cleaning
Prevents washing liquid from flowing into the recovery passage via the bypass passage.
Stop and open after the end of cleaning
Drain the remaining washing liquid into the recovery passage via the bypass passage
Residual liquid collecting device for a rotary-type filling machine, wherein the Turkey. 2. The method according to claim 1, wherein the rotary filling machine includes the first supply passage.
Is connected to the rotary joint and the recovery passage is connected
And a rotary joint, and
The rotary joint to which the path is connected is the first supply pipe
Located below the rotary joint to which the
2. The rotary charging device according to claim 1, wherein
Filler residual liquid recovery device.