JP3250306B2 - Foreign matter prevention device for rotary bottle washer - 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 bottle washing machine, and more particularly to a method for preventing foreign matter such as abrasion powder generated in a sliding portion between a rotating side and a fixed side from being mixed into a cleaning liquid. The present invention relates to a device for preventing foreign matter from entering.

[0002]

2. Description of the Related Art Generally, a rotary bottle washing machine is provided with a rotating body and an outer peripheral portion of the rotating body at equal intervals in a circumferential direction.
A bottle gripper for gripping the conveyed bottle and inverting the bottle during rotation and conveyance, and a nozzle provided at a position corresponding to each bottle gripper on the rotating body, for injecting the cleaning liquid into the bottle, A rotating plate that is attached to the lower surface of the body, rotates integrally, and slides on a fixed plate disposed below the rotating plate, and supplies the cleaning liquid to the piping to each nozzle. A discharge passage for feeding is formed, while a supply passage for distributing and supplying the cleaning liquid sent from the pump is formed on the fixed plate, and in a predetermined section during rotation of the rotating plate,
When the discharge passage of the rotary plate is connected to the supply passage of the stationary plate, the cleaning liquid is sent to the nozzle via the above-mentioned pipe, and is sprayed on the bottle gripped by the bottle gripper to wash the bottle. ing.

In the above-mentioned bottle washing machine, the stationary plate and the rotary plate which constitute the rotary valve for shutting off the supply of the washing liquid are usually made of a metal such as stainless steel. The pressure is always applied from below by a spring or the like so that the rotary valve is not separated due to losing. Therefore, in order to reduce the friction of the sliding surface due to the rotation of the rotating plate on the fixed side plate, an intermediate passage which is always in communication with the supply passage of the fixed side plate is formed on the surface of the fixed side plate. An intermediate plate made of resin is connected, and the rotating plate is slid with respect to the intermediate plate.

[0004]

In the above-mentioned conventional rotary bottle washer, an intermediate plate made of resin is interposed between the stationary plate and the rotating plate in order to avoid friction between metals. If the rotary plate slides and rotates on this intermediate plate that is integrally connected so as not to rotate relative to the side plate, the resin intermediate plate will wear and the abrasion powder may be mixed into the cleaning liquid. was there. If the abrasion powder is mixed into the cleaning liquid, there are problems such as the abrasion powder adhering to the washed bottle and clogging of a discharge passage provided in the rotating plate and a nozzle for injecting the cleaning liquid.

The present invention has been made to eliminate the above-mentioned disadvantages, and wear powder and other foreign substances generated by sliding a metal rotary plate on a resin intermediate plate are mixed into a cleaning liquid. It is an object of the present invention to provide an apparatus for preventing foreign matter from entering a rotary-type bottle washing machine without fear.

[0006]

According to the present invention, there is provided an apparatus for preventing foreign matter from entering a rotary bottle washer, comprising: a fixed plate having a supply passage for a washing liquid; a fixed plate connected to the fixed plate; An intermediate plate having an intermediate passage formed therein, a rotation plate rotatably disposed on the intermediate plate, and a discharge plate formed with a discharge passage that is cut off from being communicated with the intermediate passage with rotation; A push-up means for pushing up the intermediate plate and pressing the intermediate plate against the rotary plate, wherein when the discharge passage is connected to the intermediate passage of the intermediate plate during rotation of the rotary plate, the cleaning liquid is jetted to wash the bottle. In the bottle washing machine, grooves are provided on the upper and lower surfaces of the intermediate plate so as to surround the opening of the intermediate passage, and the cleaning liquid is supplied and discharged into these grooves. Forming a mouth and an outlet, in which so as to circulate the cleaning liquid into these groove during the rotation of the rotary plate.

[0007]

In the above-described apparatus for preventing foreign matter from entering the rotary bottle washer, during the normal operation of the bottle washing process, the intermediate passage around the intermediate passage of the intermediate plate constituting the passage of the washing liquid injected into the bottle is formed. Since the cleaning liquid is constantly circulated by forming a groove surrounding the opening, abrasion powder and other foreign substances generated by sliding between the rotating plate and the intermediate plate do not enter the inside of the groove. It is possible to prevent powder and foreign substances from being mixed into the cleaning liquid.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings. FIG. 1 is a longitudinal sectional view of a rotary bottle washer provided with a foreign matter prevention device according to one embodiment of the present invention, and FIG. 2 is an enlarged view of a main part thereof. A plurality of bottle grippers 6 are provided at equal intervals in the circumferential direction near the outer periphery of the rotating body 4 attached to the upper part of the central rotating shaft 2 and integrally rotating. The bottle gripper 6 is supported via a fulcrum pin 10 on a column 8 erected on an outer peripheral edge of the rotating body 4, and can be turned around the fulcrum pin 10. A rotating plate 14 that constitutes a movable member of a rotary valve 12 that shuts off the supply of the cleaning liquid is fixed to a lower surface of a central portion of the rotating body 4, and rotates integrally with the rotating body 4. A cylindrical portion 14a is formed at the center of the rotary plate 14 fitted to the rotary shaft 2, and extends downward.

In the rotary plate 14, the same number of discharge passages 14b (see FIG. 5) as the bottle grippers 6 are formed radially. FIG. 5 shows this rotating plate 14.
2 is an exploded perspective view of an intermediate plate 20 (center of the figure) and a fixed plate 22 (bottom of the figure) to be described later. ) And the lower surface (third from the top in the figure). The rotating plate 14 serves as the movable side member of the rotary valve 12 and the intermediate plate 20 as described above.
The fixed plate 22 constitutes a fixed member of the rotary valve 12. Each of the discharge passages 14b in the rotating plate 14 has an inlet for the washing water,
The washing water outlets are opened at equal intervals on the outer peripheral surface of the rotating plate 14.

Below the position where the bottle gripper 6 grips and reverses the bottle B, a nozzle 16 for spraying washing water is provided.
Are arranged, and when the bottle B is inverted, the tip of the nozzle 16 is inserted into the mouth of the bottle B. Each of these nozzles 16 is connected to an outlet side opening of a discharge passage 14 b provided in the rotary plate 14 via a pipe 18.

The rotating plate 14 around the rotating shaft 2
On the lower side, the intermediate plate 20 and the fixed plate 2
2 are arranged. The inner peripheral hole 22 a of the lower fixed plate 22 is loosely fitted around the cylindrical portion 14 a of the rotating plate 14. The fixed plate 22 is provided with an actuator 23 for raising and lowering on the lower surface side, and is supported by the lower fixed frame 25 via the actuator 23 so that it can be raised and lowered and its rotation is restricted. It has become. The intermediate plate 20 interposed between the rotating plate 14 and the fixed plate 22 has a diameter of an inner peripheral hole 20a of the cylindrical portion 14a of the rotating plate 14.
, And are fitted without any gap. A plurality of notches 20b are formed in the inner peripheral hole 20a of the intermediate plate 14 to allow the flow of the cleaning liquid between the upper surface side and the lower surface side. The intermediate plate 20 and the fixed plate 22 are
The intermediate plate 20 is integrally connected by the four positioning pins 24 provided thereon, and the fixed plate 2
With respect to 2, relative movement is restricted in the rotation direction, so that movement in the vertical direction is possible. Rotating plate 20
When the bottle washing machine according to the present embodiment performs a normal bottle washing operation, the fixed plate 22 is pushed up by the elevating actuator 23 so that the upper surface of the intermediate plate 20 is pressed against the upper rotating plate 14. The pressure of the washing water prevents the separation between the rotating plate 14 and the intermediate plate 20 and the separation between the intermediate plate 20 and the fixed plate 22. As the elevating actuator 23, various actuators such as an air cylinder can be used. In any case, unlike the conventional spring, an actuator capable of applying and releasing a lifting force by a simple operation can be used. , Or the one whose push-up force is adjustable is used.

The upper surface of the fixing plate 22 (FIGS. 4 and 5)
), An arc-shaped long hole 22b is formed over a range of about 90 degrees around the axis of the rotating shaft 2. The arc-shaped long hole 22b communicates with an inlet passage 22c that opens to the outer peripheral surface through the inside of the fixed plate 22, and is further connected to a pump (not shown) via a supply pipe 26. Rinsing wash water discharged from the pump is introduced via the. In the intermediate plate 20 connected to the fixed plate 22, an arc-shaped through passage 20c having substantially the same length as the arc-shaped long hole 22b of the fixed plate 22 is formed so as to coincide with the upper and lower positions. . Note that the through passage 20c of the intermediate plate 20 and the long hole 22b of the fixed plate 22 are
Is located on the circumference of the same radius as the circumference on which the opening on the inlet side of the discharge passage 14b provided is disposed.

On the upper and lower surfaces of the intermediate plate 20, two annular grooves 20 concentric with the arc of the through passage 20c are formed on the inner and outer sides of the arc-shaped through passage 20c.
d, 20e, 20f, and 20g are engraved, respectively. These upper and lower four annular grooves 20d, 20e, 20f,
Reference numeral 20g denotes two communication holes 20h and 20i through which the upper and lower inner holes 20d and 20f penetrate the intermediate plate 20 vertically.
In addition, two outer peripheral side 20e, 20g
The two communication holes 20j and 20k communicate with each other. On the other hand, in the fixed plate 22, the annular grooves 20d, 20d are positioned substantially symmetrically with respect to the axis of the rotating shaft 2.
e, 20f, and 20g, an inlet passage 22d for introducing washing water for barrier (to shut off the arc-shaped through passage 20c of the intermediate plate 20 from the surroundings), and an outlet for discharging the washing water for barrier. A passage 22e is provided. The inlet passage 22d and the outlet passage 22e are respectively provided on the upper surface of the fixed plate 22 with two openings 22f and 22f.
g, 22h, 22i, and an opening 22 near the inner periphery.
f and 22h are upper and lower annular grooves 20d and 20f and communication holes 20h and 20i on the inner peripheral side of the intermediate plate 20, and openings 22g and 22i near the outer peripheral are upper and lower annular grooves on the outer peripheral side of the intermediate plate 20. 20e, 20g and the communication holes 20j, 20k coincide in position. A supply pipe 28 is provided separately from the supply pipe 26 for supplying the cleaning water for rinsing the bottle B.
The cleaning water for the barrier is supplied in a manner branched from the cleaning water for rinsing. On the other hand, the outlet passage 22e is connected to a discharge pipe (not shown) so as to discharge the barrier cleaning water in the annular grooves 20d, 20e, 20f, and 20g. The grooves through which the cleaning water for the barrier is circulated are not limited to the two annular grooves as described above, and may be, for example, arc-shaped through passages 2.
The shape of the opening of the opening 0c may be a single groove or the like surrounding the opening in an enlarged shape. In any case, the periphery of the opening of the arc-shaped through passage 20c may be shielded from other portions. Anything is fine.

Further, an arc-shaped concave portion 22j is formed over substantially the entire circumference near the inner periphery of the upper surface of the fixed plate 22. Pressurized washing water (detergent water or steam or the like) is introduced into the arc-shaped concave portion 22j via an introduction passage 22k for pushing up the intermediate plate 20 formed inside the fixed plate 22. It has become.
The arc-shaped concave portion 22j is located on the inner peripheral side further than the annular groove 20f provided on the inner peripheral side of the lower surface of the intermediate plate 20 disposed above.
When the intermediate plate 2 and the intermediate plate 20 are overlapped, the intermediate plate 20 is closed by a flat portion near the inner peripheral hole 20a.

An annular space 14c is formed around the cylindrical portion 14a provided on the lower surface of the rotary plate 14. The outer diameter of the annular space 14c is smaller than that of the inner circumferential annular groove 20d provided on the upper surface of the intermediate plate 20 disposed below, and the circular space 14c has an arc-like shape provided on the fixed plate 22. The diameter is larger than the concave portion 22j. In the fixed plate 22, the intermediate plate 2 is located adjacent to the introduction passage 22k for pushing up the intermediate plate 20.
An introduction passage 22m for pressing 0 is formed. The opening of the introduction passage 22m for pressing down the intermediate plate 20 is located on the same circumference as the arc-shaped concave portion 22j. In the intermediate plate 14, through holes 20m are formed at positions corresponding to the openings of the introduction passages 22m for pressing down the intermediate plate 20, and the collar 30 is inserted into the introduction passages 22m and the through holes 20m. . The introduction passage 22m for pressing the intermediate plate 20 is also connected to a supply-side pipe (not shown),
Pressurized cleaning water is supplied, and the supplied cleaning water is directly introduced into the annular space 14c formed on the bottom surface of the upper rotating plate 14 through the collar 30. It has become.

The operation of the rotary bottle washer according to the above configuration will be described. During normal operation for bottle washing,
The lifting force of the lifting / lowering actuator 23 acts to push up the fixed plate 22 and the intermediate plate 20, and the upper surface of the intermediate plate 20 is pressed against the lower surface of the rotating plate 14. Rotating body 4 supported on rotating shaft 2
The rotating plate 14 is rotated by driving means (not shown). Each of the bottle grippers 6 provided on the rotating body 4 grips and receives the head of the bottle B conveyed in an upright state by conveying means such as a conveyor, and then reverses during rotation and conveys the bottle B. In the inverted state (state of FIG. 1).
The tip of the nozzle 16 for jetting washing water is inserted into the mouth of the inverted bottle B. Fixed plate 22 and intermediate plate 2
0, an elongated hole 22b on an arc extending over approximately 90 degrees and a through passage 20c on the arc are formed, and the rotation of the rotary plate 14 causes the opening on the inlet side of the discharge passage 14b to open through the through passage 20c of the intermediate plate 20. When connected to the rinsing rinse water discharged from the pump, the supply pipe 26, the inlet passage 22c of the fixed plate 22, the arc-shaped long hole 22b,
The ink is sent to the nozzle 6 through the arc-shaped through passage 20c of the intermediate plate 20, the discharge passage 14b of the rotating plate 14, the pipe 18, and the like, and is sprayed into the bottle B to perform cleaning. While the inlet-side opening of the discharge passage 14b of the rotating plate 14 is rotating while overlapping with the arc-shaped through passage 20c of the intermediate plate 20 (region indicated by R in FIG. 5), the washing water is sent to the nozzle 6 and the bottle is washed. The cleaning of B is performed. Thereafter, when the opening on the inlet side of the discharge passage 14b of the rotary plate 14 passes through the arc-shaped through passage 20c of the intermediate plate 20, a series of passages for supplying the rinse cleaning water is shut off, and the cleaning is completed. Thereafter, the bottle gripper 6
The bottle B is held in an inverted state for a predetermined rotation range and drained, and then the bottle B is turned over again to return to an upright state and discharged out of the bottle washing machine.

While the bottle B is being washed as described above, the washing water discharged from the pump is supplied via another supply pipe 28 branched from the above-mentioned supply pipe 26 for supplying the rinse washing water. It is also supplied into the inlet passage 22d of the fixed plate 22 as barrier cleaning water. The washing water that has entered the inlet passage 22d enters the two annular grooves 20f, 20g on the lower surface side of the intermediate plate 20 from the two radially inner and outer openings 22f, 22g. , 2
0g, flows in the circumferential direction, and is provided at a position symmetrical to the inlet passage 22d of the fixed plate 22.
e. The water supplied to the inlet passage 22d is communicated with the communication holes 2 vertically penetrating the intermediate plate 20.
Oi and 20k are also fed into the annular grooves 20d and 20e on the upper surface side of the intermediate plate 20. The cleaning water in the annular grooves 20d and 20e on the upper surface also flows in the circumferential direction similarly to the cleaning water on the lower surface, and is discharged from the communication holes 20h and 20j on the opposite side through the outlet passage 22e. As described above, during the cleaning operation in which the rotating plate 14 is pressed against the intermediate plate 20 and is slid and rotated, the inner peripheral side and the outer peripheral side of the arc-shaped through passage 20c formed in the intermediate plate 20 made of resin are formed. Since the cleaning water for the barrier is constantly flown in the arranged annular grooves 20d, 20e, 20f, and 20g, abrasion powder and other foreign substances generated by sliding between the rotating plate 14 and the intermediate plate 20 are reduced. Inner and outer annular grooves 20d, 20
e, 20f, and 20g can be prevented from entering the arc-shaped through passage 20c, which is the passage of the rinse water, so that there is a possibility that these abrasion powders and foreign substances may be mixed into the rinse water. Absent.

Further, in the rotary bottle washer according to this embodiment, in addition to preventing the abrasion powder and foreign matter from being mixed into the rinse water for rinsing by continuously flowing the washing water for the barrier during the bottle washing operation. Before and after performing the bottle washing operation, the upper and lower surfaces (sliding surface and fixed surface) of the intermediate plate 20 in which the rinse water distribution passage (arc-shaped through passage 20c) is formed.
By washing the washing water, it is possible to prevent wear powder and foreign substances from being mixed into the washing water for rinsing when washing the bottle. The cleaning of the intermediate plate 20 is performed as follows. First, the operation of the lifting actuator 23 is released to release the force for pushing up the fixed plate 22 and the intermediate plate 20. Then, a gap is generated between the rotating plate 14 integrally attached to the rotating shaft 2 and the intermediate plate 20 disposed below the rotating plate 14. Intermediate plate 2
In the case of cleaning the lower surface of No. 0, after this state, the cleaning water is pressurized and injected into the introduction passage 22k for pushing up the intermediate plate 20. The washing water enters into an arc-shaped concave portion 22j formed on the upper surface of the fixed plate 22 over substantially the entire circumference, and pushes up the intermediate plate 20 by this water pressure.
As a result, a gap is created between the intermediate plate 20 and the fixed plate 22, and the washing water fills the gap with the intermediate plate 20.
And flows to the inner and outer peripheral sides of the fixed plate 22 to clean the lower surface of the intermediate plate 20 and the entire upper surface of the fixed plate 22 (see FIG. 6).

When the upper surface of the intermediate plate 20 is to be cleaned, the cleaning water is pressurized and injected into the introduction passage 22m for pressing down the intermediate plate 20. This washing water is supplied to the introduction passage 22m.
Through the opening 30 and the collar 30 inserted into the through hole 20m of the intermediate plate 20 and into the annular space 14c formed in the center of the bottom of the rotary plate 14, and push up the rotary plate 14 to rotate the rotary plate 14. And intermediate plate 20
To create a gap between As shown in FIG. 7, the cleaning liquid entering the annular space 14c flows on the surface of the intermediate plate 20 toward the inner peripheral side and the outer peripheral side to clean the entire upper surface. The cleaning liquid flowing to the inner peripheral side of the intermediate plate 20 flows down through the notch 20b formed in the inner peripheral hole 20a of the intermediate plate 20. By cleaning the upper and lower surfaces of the intermediate plate 20 before and after the operation for cleaning the bottle B in this manner, the abrasion caused by the sliding between the rotary plate 14 and the intermediate plate 20 during the cleaning operation of the bottle B is performed. Since powder and other foreign substances are removed, the possibility that these foreign substances enter the rinse water for rinsing can be reduced.

[0020]

As described above, according to the present invention, the intermediate plate is provided between the rotary plate and the fixed plate, the intermediate plate having an intermediate passage communicating with the supply passage of the fixed plate. By providing grooves surrounding the periphery of the opening of the opening, and forming a supply port and a discharge port for supplying and discharging the cleaning liquid in these grooves, by allowing the cleaning liquid to flow through these grooves during rotation of the rotating plate, It is possible to prevent abrasion powder and other foreign substances generated by sliding between the rotating plate and the intermediate plate from entering the cleaning water passage.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a rotary bottle washer provided with a foreign matter mixing prevention device according to one embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of the rotary bottle washer.

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

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 1;

FIG. 5 is an exploded perspective view of a rotary valve including a rotating plate, an intermediate plate, and a fixed plate.

FIG. 6 is a vertical sectional view of an essential part for explaining a case of cleaning the lower surface side of the intermediate plate.

FIG. 7 is a vertical sectional view of an essential part for explaining a case of cleaning the upper surface side of the intermediate plate.

[Explanation of symbols]

 14 Rotating plate 14b Discharge passage 20 Intermediate plate 20c Intermediate passage (through passage) 22d, 22e, 22f, 22g Groove (annular groove) 22 Fixed plate 22b Supply passage (arc-shaped long hole) 22d Supply port (inlet passage) 22e Discharge port (Exit passage) 23 Push-up means

Claims (1)

(57) [Claims] 1. A fixed plate having a cleaning liquid supply passage formed therein, an intermediate plate connected to the fixed plate and having an intermediate passage communicating with the supply passage, and rotatably disposed on the intermediate plate. A rotating plate having a discharge passage formed therein, the discharge passage being cut off from being communicated with the intermediate passage with rotation, and a push-up means for pushing up the fixed plate and the intermediate plate to press against the rotating plate,
When the discharge passage is connected to the intermediate passage of the intermediate plate during the rotation of the rotary plate, the washing liquid is sprayed to wash the bottle. A groove surrounding the periphery of the opening, and a supply port and a discharge port for supplying and discharging the cleaning liquid are formed in these grooves, and the cleaning liquid flows through these grooves during rotation of the rotary plate. A device for preventing foreign matter from entering the bottle washing machine.