JP2003010806A - Rotary rinser - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the cleaning capability of a rotary rinser. SOLUTION: A rotary valve 26 is composed of a fixed side plate 32, a middle plate (a distributor) 30 and a rotary plate 28 which slides over the lower face of the middle plate 30 attached to a rotator 12. Cleaning water supplied in the fixed side plate is fed to a nozzle 22 through a discharge passage 28a internally formed in the rotary plate 28 and jetted into a container 20. An opening of a supply passage formed in the middle plate 30 is constituted of a wide and arc-shaped through hole 30a opened in the radial direction, an arc-shaped recessed groove (a connecting path) 30 connected to the through hole 30a and a hole with a smaller diameter 30c formed in the recessed groove 30. When the discharge passage 28a formed in the rotary plate 28 coincides with the opening of the intermediate plate 30, the cleaning water is ejected from the nozzle 22. A cleaning water channel is throttled by the recessed groove 30 and the hole 30c to came a pressure loss. Thus the cleaning operation is carried out at a low pressure.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary rinser for cleaning by spraying cleaning water while moving a nozzle following a container which is rotatably conveyed.

[0002]

2. Description of the Related Art In general, a rotary rinser has a plurality of bottle grippers provided on the outer peripheral portion of a rotating body at equal intervals in the circumferential direction and a container gripping the bottle grippers by reversing them. Reversing means, a plurality of nozzles provided corresponding to each bottle gripper, and a rotary valve for switching and connecting the supply source of the cleaning fluid supplied to each nozzle and the nozzle. .

When cleaning a container with the rotary rinser, conventionally, an optimum cleaning pressure is set according to the condition of the article to be cleaned such as the degree of dirt and the size of the container, and the cleaning water is always used. Was sprayed at a constant pressure for cleaning.

[0004]

As described above, when cleaning the container with a constant cleaning water pressure, if the cleaning water pressure is set high to remove dirt, the cleaning water blown into the container becomes turbulent. Therefore, the dirt peeled off from the inner surface of the container may be entrained in the turbulent flow inside the container, and may adhere to and remain on the inner surface of the container after cleaning. In order to prevent the dirt from reattaching in this way, if the washing water pressure is set to a low pressure so that the washing water in the container becomes a laminar flow and the dirt flows out in one way, There was a problem that the peeling force was weak and could not be completely washed.

The present invention has been made to solve the above-mentioned problems, and it is possible to surely remove the dirt on the inner surface of the container by the high-pressure washing water pressure and to discharge the dirt that has been removed by the low-pressure washing water pressure from the container. An object of the present invention is to provide a rotary rinser that can change the cleaning water pressure during cleaning.

[0006]

A rotary rinser according to a first aspect of the present invention includes a fixed side plate having a wash water supply passage formed from a wash water intake port to an opening of a sliding surface. A rotary plate that is slidably rotatable with respect to the sliding surface of the fixed side plate and that has a discharge passage that is blocked by the rotation to communicate with the opening when the rotary plate rotates. When the discharge passage is connected to the supply passage of the fixed side plate, the washing water is sprayed to wash the container, and the flow path of the washing water is narrowed to a part of the supply passage to reduce the pressure loss. By forming a region in which is generated, the water pressure of the washing water sprayed on the container is changed.

In this rotary rinser, when the discharge passage of the rotary plate is connected to the supply passage of the fixed side plate, cleaning water is supplied to the discharge passage and sprayed into the container, but the flow passage of the supply passage is narrowed. Pressure loss occurs in the portion where the water is washed, and the pressure of the wash water is lower than that in the other portions.

The rotary rinser according to a second aspect of the present invention is characterized in that the regions where the pressure loss occurs and the regions where the pressure loss does not occur are alternately arranged.

In the rotary rinser of the present invention, the regions where pressure loss occurs, that is, the region where the cleaning water pressure is low, and the regions where no pressure loss occurs, that is, the regions where the cleaning water pressure is high, are alternately arranged for cleaning. Optimal cleaning can be performed according to the size of the article and the degree of contamination.

Further, in the rotary rinser according to a third aspect of the invention, in the region where the pressure loss occurs, a hole having a diameter smaller than the radial width in the region where the pressure loss of the supply passage does not occur, and the pressure It is characterized in that a communication path connected to a region where no loss occurs is formed.

When the flow passage is narrowed by providing a small-diameter hole which is completely separated from the region of the supply passage where no pressure loss occurs, the flow passage is blocked between the two, so that the flow path is suddenly cut off. The pressure drops, but this claim 3
As in the rotary rinser according to the invention described in (1), when the region that does not cause pressure loss and the small-diameter hole that causes pressure loss are connected by the communication passage, the pressure drop of the wash water is gentle. It is easy to set the most preferable cleaning water pressure.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below with reference to embodiments shown in the drawings. FIG. 1 is a plan view showing a simplified arrangement of a rotary rinser (generally denoted by reference numeral 1) according to an embodiment of the present invention. Containers continuously conveyed by a container conveyer conveyor 2 are: It is separated at a predetermined pitch by the infeed screw 4 and introduced into the rotary rinser 1 via the inlet star wheel 6. The rotary body of the rotary rinser 1 is provided with bottle grippers described later at equal intervals in the circumferential direction, and each bottle gripper holds the container supplied from the inlet star wheel 6 in an upright state. . The bottle gripper is reversed by a reversing means such as a cam (not shown) as the rotating body rotates (rotates in the direction of arrow R),
Invert the grasped container.

Next, while the container is gripped and rotated by the bottle gripper in an inverted state, cleaning water is sprayed from the lower nozzle to the inside thereof for cleaning, and then the container is conveyed in the draining region in an inverted state. After that, the water is drained. After the draining is completed, the bottle gripper holding the container is turned over again to return the container to the upright state, and the upright container is discharged onto the container conveyor 2 via the outlet star wheel 8. And sent to the next process.

FIG. 2 is a vertical cross-sectional view showing a main part of the rotary type rinser 1. According to this figure, the rotary type rinser 1 is shown.
The configuration will be described in detail. A plurality of bottle grippers 14 are provided at equal intervals in the circumferential direction near the outer circumference of the rotating body 12 that is attached to the upper part of the central rotating shaft 10 and rotates integrally. Each of these bottle grippers 14 is rotatably supported by a column 16 which is erected on the outer peripheral edge of the rotating body 12, and is rotated by a reversing means such as a cam.
The position facing the center direction of the (the position shown by the broken line in FIG. 2)
It can be inverted between a position facing the outer side of the rotating body 12 (a position shown by a solid line in FIG. 2). The bottle gripper 14 grips the neck portion of the container 20 in the upright state supplied through the inlet star wheel 6 when facing the outside of the rotating body 12, and thereafter, to the inner side of the rotating body 12. When turned upside down, the container 20 is turned upside down.

Nozzles 22 for injecting a cleaning fluid into the container 20 are arranged below the container 20 which is turned upside down by reversing each bottle gripper 14. Each of these nozzles 22 is connected to a rotary valve 26 via a nozzle pipe 24. The rotary valve 26 shuts off the communication of the cleaning fluid supply passage, as will be described later.

The rotary valve 26 is disposed near the center of the rotary body 12 and is fixed above the rotary shaft 10 to rotate integrally with the rotary shaft 10. The rotary valve 28 is arranged above the rotary plate 28. And an annular intermediate plate (distributor) 30 and an annular fixed plate 32. In this embodiment, the intermediate plate 30 and the fixed plate 32 constitute the fixed side plate of claim 1. Intermediate plate 3
0 is fixed by a plurality of positioning pins (not shown) provided on the lower surface side of the fixed plate 32.
And the upper surface of the rotary plate 28 rotationally slides on the lower surface of the intermediate plate 30.

A plurality of guide rods 36 are fixed above the fixed plate 32, while guide holes 3 corresponding to the respective guide rods 36 are provided near the inner circumference of the fixed plate 32.
2a is formed. The lower end of the guide rod 36 is inserted into each of the guide holes 32a, and the fixed plate 32 is guided by the guide rod 36 to be able to move up and down and its rotation is restricted. Each guide rod 3
A spring 42 is fitted around the periphery of 6 to urge the fixed plate 32 downward so that the intermediate plate 30 is pressed against the upper surface of the lower rotary plate 28.

Inside the rotary plate 28, the same number of discharge passages 28a as that of the bottle grippers 14, that is, the same number as the number of nozzles 22, are radially formed at equal intervals. In each of the discharge passages 28a, inlets for the cleaning fluid are arranged at equal intervals on the same circumference on the upper surface side of the rotary plate 28, and outlets for the cleaning fluid are opened at equal intervals on the outer peripheral surface of the rotary plate 28. ing. The nozzle pipe 24 is connected to the outlet side opening of each of the discharge passages 28a.

On the lower surface side of the fixed plate 32, there is formed an arc-shaped elongated hole 32b centered on the axis of the rotary shaft 10. Cleaning water is supplied to the arcuate elongated hole 32b from a cleaning water supply source (not shown) through the supply pipe 44.

The intermediate plate (distributor) 30 connected to the lower surface side of the fixed plate 32 is shown in FIG.
As shown in (a) and (b), an arcuate through hole 30a that penetrates vertically and an arcuate groove (communication passage) 30b formed on the lower surface side and connected to this arcuate through hole 30a.
And two small-diameter holes 30c vertically penetrating the arcuate groove 30b.
The portion of the intermediate plate 30 where the arc-shaped through hole 30a and the penetrating small-diameter hole 30c are provided is connected so as to overlap the arc-shaped elongated hole 32b of the fixed plate 32. Arc-shaped through holes 3 of these intermediate plates 30
0a, the arcuate groove 30b, the small diameter hole 30b, and the arcuate elongated hole 32b of the fixed plate 32 constitute a supply passage of the fixed side plate (the intermediate plate 30 and the fixed plate 32). That portion is arranged in the cleaning area of the rotary rinser 1.

The operation of the rotary rinser 1 will be described. The containers 20 continuously conveyed from the container conveyer 2 are aligned at a predetermined pitch by the infeed screw 4 and supplied into the rinser 1 via the inlet star wheel 6. The rinser 1 is provided with the bottle grippers 14 at predetermined intervals, and the container 20 supplied into the rinser 1 in an upright state is gripped by each bottle gripper 14.

The rotary rinser 1 is provided with a reversing mechanism for reversing the bottle gripper 14, and the reversing mechanism reverses the bottle gripper 14 to bring the container 20 upside down. When the container 20 is inverted, the nozzles 22 provided on the rotating body 12 corresponding to the bottle grippers 14 face the mouth of the container 20 (indicated by the broken line in FIG. 2).

As the rotating body rotates, the nozzle pipe 24
The opening on the inlet side of the discharge passage 28a of the rotary plate 28 to which is connected is inserted into the cleaning area (the portion where the opening of the supply passage of the fixed side plate is arranged), and first, the arc-shaped penetration of the intermediate plate 30 is performed. When connected to the hole 30a, the cleaning water supplied from a cleaning water supply source (not shown) via the supply pipe 44 is provided in the arc-shaped elongated hole 32b of the fixed plate 32.
It is sent to the nozzle 22 via the arcuate through hole 30a of the intermediate plate 30, the discharge passage 28a of the rotary plate 28 and the nozzle pipe 24, and is sprayed from the nozzle 22 into the container 20 for cleaning. While the discharge passage 28a of the rotary plate 28 overlaps the arcuate through hole 30a of the intermediate plate 30, there is almost no pressure loss in this portion, and the wash water is sprayed at high pressure.

The inlet side opening of the discharge passage 28a of the rotary plate 28 has the arc-shaped through hole 3 of the intermediate plate 28.
When entering the portion of the arc-shaped groove 30b from 0a, the cleaning water sent from the arc-shaped elongated hole 32b of the fixed plate 32 passes through the small-diameter hole 30c and the shallow arc-shaped groove 30b and passes through the discharge passage of the rotary plate 28. 28a and is ejected from the nozzle 22.

The small-diameter hole 30c and the shallow arcuate groove 30b of the intermediate plate 30 reduce the area of the flow passage through which the wash water passes, so that pressure loss occurs and the inlet side opening of the discharge passage 28a has the arcuate through hole. The discharge pressure of the wash water becomes lower than that when passing through 30a, and the wash is performed at a low pressure. In this way, a region where pressure loss does not occur and a region where pressure loss occurs are provided, the cleaning water is sprayed at a high pressure to remove the dirt, and then the cleaning is performed at a low pressure to remove the removed dirt from the container 20. It can be discharged smoothly. In this embodiment, the high-pressure cleaning section is arranged on the upstream side and the low-pressure cleaning section is arranged on the downstream side. However, the arrangement is not limited to such an arrangement, and the nature of contamination and the container The low-pressure washing section may be arranged first according to the condition of the article to be washed such as size. Further, the number of small-diameter holes 30c, the diameter, the depth, length, width, etc. of the arcuate groove 30b can be appropriately set according to the property of the article to be washed.

In this embodiment, the fixed side plate is composed of the annular fixed plate 32 and the annular intermediate plate (distributor) 30, but it is not always necessary to separate them, and the fixed plate 32 and the intermediate plate 30 are not necessarily separate. And may be integrally formed. Further, the configuration of the low pressure cleaning section can be changed according to the size of the container 20 to be cleaned, the nature of dirt, the degree of contamination, and the like. For example, the intermediate plate 30 can be connected to the downstream side of the arc-shaped through hole 30a. It is also possible to omit the arcuate concave groove (communication passage) 30b provided in the above. In such a configuration in which the communication passage 30b is omitted, since the pressure loss is larger than that of the structure having the communication passage 30b, the cleaning can be performed at a lower cleaning pressure.

FIG. 4 shows an intermediate plate (distributor) 30 of the rotary rinser 1 according to the second embodiment.
FIG. 4 is a plan view of FIG. 3, in which two sets of supply passage openings each including the arc-shaped through hole 30a, the arc-shaped groove (communication passage) 30b, and the small diameter hole 30c are provided. In this case, high pressure cleaning is performed on the arcuate through hole 30a, low pressure cleaning is performed on the arcuate groove 30b and the small diameter hole 30c, and high pressure cleaning and low pressure cleaning are repeated again.
By repeatedly changing the water pressure of the wash water in this manner, the washability can be further improved.

FIG. 5 is a plan view of the intermediate plate (distributor) 30 of the rotary rinser 1 according to the third embodiment, which has a large radial arc-shaped through hole which constitutes a high pressure cleaning region. By providing an arcuate through hole 30d having a narrow radial width subsequent to 30a, the flow area of the wash water is narrowed to lower the wash water pressure. With this configuration, the same effect as that of the above-described embodiment can be obtained. Further, by optimally changing the width and length of the wide radial portion (arc-shaped through hole 30a) and the narrow width portion (arc-shaped through hole 30d), optimum cleaning performance can be obtained. You can

[0029]

As described above, according to the present invention, the fixed side plate in which the wash water supply passage extending from the wash water intake port to the opening of the sliding surface is formed, and the fixed side plate slides. A rotary plate that is slidably rotatable with respect to a surface, and that has a discharge passage formed with a discharge passage that communicates with and cuts off from the opening as the rotation passage rotates. In a rotary rinser that sprays the cleaning water to clean the container when connected to the supply passage, a region of the supply passage is narrowed to form a region where pressure loss occurs. As a result, the water pressure of the cleaning water sprayed on the container is changed, so that the cleaning efficiency can be improved as compared with the case where the cleaning is performed under a constant cleaning pressure. Also, it is optimal by arranging before and after the portion where the wash water pressure is lowered by narrowing the wash water flow path and other portions where the wash water pressure is high, and by appropriately setting the length of these sections, the wash pressure, etc. The cleaning efficiency can be obtained.

[Brief description of drawings]

FIG. 1 is a plan view showing a simplified overall configuration of a rotary rinser according to an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of a main part of the rotary rinser.

3A is a plan view of an intermediate plate (distributor) of the rotary rinser, and FIG. 3B is a sectional view taken along line bb of FIG. 3A.

FIG. 4 is a plan view showing an intermediate plate of a rotary rinser according to a second embodiment.

FIG. 5 is a plan view showing an intermediate plate of a rotary rinser according to a third embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 rotary rinser 20 container 28 rotary plate 28a rotary plate discharge passage 30 fixed side plate (intermediate plate) 30a fixed side plate supply passage (intermediate plate arc-shaped through hole) 30b fixed side plate supply passage (intermediate plate) Arc-shaped groove 30c Supply path of fixed side plate (small diameter hole of intermediate plate) 32 Fixed side plate (fixed plate) 32b Supply path of fixed side plate (arc-shaped elongated hole of fixed plate)

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Koichi Nakanishi             Shibu, 4-13-5 Kitaaneyae, Kanazawa, Ishikawa Prefecture             Within Yamanashi Co., Ltd. F term (reference) 3B116 AA22 AB14 AB27 AB47 BB36                       BB87 BB90 CC01 CC03                 3B201 AA22 AB14 AB27 AB47 BB36                       BB87 BB90 BB92 CC01 CC11                 4F035 AA01 CA02 CA05 CB02 CB05                       CB13 CB16 CB29 CC01 CD03                       CD13 CE02 CE04

Claims (3)

[Claims] 1. A stationary-side plate having a wash water supply passage extending from a wash water intake port to an opening of a sliding surface,
A rotary plate disposed so as to be slidably rotatable with respect to the sliding surface of the fixed-side plate, and having a discharge passage formed therein, the discharge passage being cut off from the opening in communication with the rotation plate. In a rotary rinser for injecting the cleaning water to clean the container when the discharge passage is connected to the supply passage of the fixed side plate, pressure loss is caused by narrowing the flow passage of the washing water in a part of the supply passage. A rotary rinser characterized in that the water pressure of the cleaning water sprayed into the container is changed by forming a region where the above occurs. 2. The rotary rinser according to claim 1, wherein regions where the pressure loss occurs and regions where the pressure loss does not occur are alternately arranged. 3. A hole having a diameter smaller than a radial width of a region of the supply passage where no pressure loss occurs and a communication passage connected to the region where no pressure loss occurs in the region where the pressure loss occurs. The rotary rinser according to claim 1, wherein: