JPS6341107Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention allows containers such as basket-shaped racks, rice cookers, food cans, and passable boxes to be placed on a box frame-shaped turntable with the opening facing downward. The high-pressure cleaning liquid (cleaning liquid such as hot water or water) is applied from cleaning nozzles installed vertically and circumferentially to the entire inner and outer surfaces of the container to be cleaned while horizontally rotating (relatively slow rotation) using a turntable. When cleaning by concentrated spraying, the container to be cleaned is pushed down by the pressing force of the pusher that is lowered by the hydraulic pressure of the hydraulic cylinder, and the container to be cleaned is floated or shaken by the jet pressure of the cleaning liquid from the lower cleaning nozzle. At the same time, after cleaning of the container to be cleaned is completed, the hydraulic pressure to the hydraulic cylinder is stopped, the pusher is pulled upward by the elastic bar, the pressure on the container to be cleaned is released, and the container is carried out of the machine. However, the system waits until the next container to be cleaned is placed on the turntable in the continuous cleaning operation.

(b) Conventional technology Conventionally, in this type of container jet washer, a container to be cleaned is placed on a box frame-shaped turntable with the opening facing downward, and is pushed from the back side by the hydraulic pressure of a hydraulic cylinder. The idea of performing the raising and restoring operation of the pusher by the pressure of the injected liquid from the lower chamber of the hydraulic cylinder was proposed in the application filed before this application.
This is the technology disclosed in No. 54-126800.

(c) Problems to be solved by the invention However, in the above-mentioned conventional hydraulic cylinder, the cleaning liquid is injected from the cleaning nozzle and at the same time the cleaning liquid is introduced into the upper chamber of the cylinder, and the cylinder shaft is extended downward by the pumping pressure. However, by pressing the container to be cleaned on the turntable with a disk-shaped pusher fixed to the tip of the cylinder shaft, the container to be cleaned is prevented from being blown away by the jet of cleaning liquid from below. ,
Since the pusher is fixed to the cylinder shaft, if the bottom of the container to be cleaned that is pressed by this pusher is an arcuate surface or an inclined surface, the pressure will be uneven and the container to be cleaned may not be held properly. It had the disadvantage of being unstable.

In addition, when the pusher is pulled upward to release the container to be cleaned, finishing water is introduced into the lower chamber of the cylinder and the cylinder shaft is contracted, which requires complicated piping and also causes the contraction to occur. At times, it is necessary to equip a special stopper for locking the cylinder shaft, which poses problems such as being mechanically complicated, prone to breakdowns, and increasing manufacturing costs.

(d) Means for solving the problem (technical means) In order to solve the above-mentioned conventional problems, this invention
A hydraulic cylinder 6 is provided above the center of rotation of the turntable 2, which is installed horizontally rotatably in the cleaning chamber, to extend the cylinder shaft 19 downward by the pressure of the cleaning liquid, and applies an upward tensile force to the tip of the cylinder shaft 19. connecting repellent strips 8 that impart
Further, a rotor 50 is attached to the tip of the cylinder shaft 19 so as to be horizontally rotatable, and an annular pusher 7 arranged around the rotor 50 is oscillated by the rotor 50 via a plurality of tension coil springs 51. By freely connecting and holding the pusher 7, even when the bottom of the container B to be cleaned is an arcuate surface or an inclined surface, the pusher 7
When the pusher 7 is pulled upward to release the container B to be cleaned, it is possible to uniformly press the container B to be cleaned elastically and stably, and at the end of the cleaning process. At the same time as the pressure in the cylinder is reduced by stopping the pumping of the cleaning fluid, the cylinder shaft 19 can be automatically retracted by the resilient strip 8. This simplifies the piping and locks the cylinder shaft when it retracts. This paper proposes a container jet washer that simplifies the mechanism by eliminating the need for a special stopper, which reduces failures and reduces manufacturing costs.

(e) Operation When cleaning a container, first, the container to be cleaned is brought in with the opening facing downward, guided over the door-type table 9 on the unloading side, and placed on the box frame type turntable 2 in the cleaning room. After placing the liquid, the driven sprocket 12 is rotated by the drive of the motor M via the drive sprocket 10 and the transmission chain 11, and the liquid feeding pump is activated.
Drive _P1 . As a result, for example, subtank 1
The cleaning liquid in the cleaning chamber 3 is passed through a liquid feeding pipe 14 provided under the turntable 2, a liquid feeding pipe 15 installed vertically on one side, and a bypass liquid feeding pipe 16 at the upper part, and is passed almost vertically to the upper part of the cleaning chamber. It is fed under pressure to the upper chamber 17 of the installed hydraulic cylinder 6. This pressure washing liquid lowers the pressure on the upper cylinder valve 18 and lowers the cylinder shaft 19. At the same time, the horizontally rotatable pusher 7 is lowered via the movable member 20 of the hydraulic cylinder 6, and the pusher 7 is turned. The container to be cleaned is fixed on the turntable 2 by pressing against the back surface (top surface) of the container B to be cleaned placed on the table 2 . At this time, a rotor 50 is attached to the tip of the cylinder shaft 19 so as to be horizontally rotatable, and the annular pusher 7 arranged around the rotor 50 is connected to the rotor 50 via a plurality of tension coil springs 51. Since the container B to be cleaned is connected and held in a swingable manner, even if the bottom of the container B to be cleaned is an arcuate surface or an inclined surface, the pressing force of the pusher 7 can be made uniform and the container B to be cleaned can be moved elastically. can be held down stably. Then, by driving another motor installed at the bottom of the body 21, the vertical rotating shaft 23 is horizontally rotated at a low speed via the reducer 22, and the turntable 2 connected to the top thereof is horizontally rotated.

At this time, the liquid sending pipe ₁ is
The cleaning liquid pumped through the cleaning nozzles 4 and 15 is intensively sprayed from the upper and lower sides of the container B on the horizontally rotating turntable 2 through the respective cleaning nozzles 3 and 5, and the entire inside and outside surface of the container B is sprayed from the top and bottom sides. Cleans completely and evenly.

Furthermore, a finish cleaning liquid source such as the sub-tank 52 (a heat source such as a boiler that generates hot water or steam)
The finishing cleaning liquid is passed through the finishing liquid sending pipes 24, 25, 26 using a liquid sending pump _P2, etc., and is sent from the injection nozzles 4 of the liquid sending pipes 25, 26 to the container B to be cleaned which is being rotated horizontally by the turntable 2. The spray is concentrated on the top, bottom, and sides of the machine to completely clean the surface.

However, the cleaning liquid spray nozzle 5 installed at the bottom
For example, it is a swing type, and several rods are set in parallel in a substantially V-shape on its forward/reverse rotating body 27, and it rotates repeatedly in an oscillating manner, thereby powerfully and intensively spraying the cleaning liquid onto the container to be cleaned above. Wash it. Instead of this spray nozzle, it is also possible to apply a nozzle for straight spraying the cleaning liquid.

The left and right repetitive movement of the swing type injection nozzle 5 is achieved by pivoting the front end of a link bar 29 to a pivot member 28 provided on the upper part of the body 27, and connecting the rear part of the link bar 29 to a rotary plate 31 of a drive sprocket 30.
A small-diameter transmission sprocket 33 is pivotally connected to the drive sprocket 30 when eccentric, a transmission chain 32 is wound around the drive sprocket 30, and the transmission chain 32 is pivoted on the lower part of the transmission sprocket 33.
At the same time, a transmission chain 38 is wound around a large diameter sprocket 35 provided on the shaft 34 of the transmission sprocket 33 and a sprocket 37 provided on the shaft 36 of the driven sprocket 12, and the drive rotation of this sprocket 37 causes the aforementioned The link bar 29 is moved back and forth through the sprocket and transmission chain, and the swing-type injection nozzle 5 is repeatedly moved from side to side to forcefully and intensively spray the cleaning liquid onto the entire inner circumference of the container to be cleaned above, thereby almost completely cleaning it. That's what I do.

After the cleaning of the container to be cleaned is completed, the pressure feeding of the main cleaning liquid and the finishing cleaning liquid is temporarily stopped, and at the same time, the liquid feeding to the hydraulic cylinder 6 through the bypass pipe 16 is stopped. By temporarily stopping the cleaning liquid, the pressure inside the hydraulic cylinder 6 is reduced, and the downward repulsive force of the elastic strip 8 is reduced. At the same time as the cylinder shaft 19 is raised, the pusher 7 is
is raised, the pusher 7 is removed from the container to be cleaned, and the container to be cleaned B is released on the turntable 2.

When the supply of the cleaning liquid is stopped, the reduced pressure liquid in the hydraulic cylinder 6 is discharged from the cleaning nozzle 3 of the liquid supply pipe 15 via the bypass pipe 16.

Therefore, the resilient strip 8 overcomes the hydraulic pressure within the hydraulic cylinder 6 and raises the cylinder shaft 19 by its upward resilient force, thereby reliably raising the pusher 7.

(c) Embodiment FIGS. 4 and 5 show an embodiment of the main part of this invention, and 39 is an injection pipe for feeding the cleaning liquid from the bypass pipe 16 into the upper chamber 17 of the hydraulic cylinder 6. , 40 is a latching member for the two front and rear elastic strips 8 fixed to the upper part of the hydraulic cylinder 6, and the lower end of the elastic strip 8 is fixed perpendicularly to the other side 42 of the movable member 20 in a well-balanced manner. This guide rod 41 is inserted into a guide hole 44 of a ring supporter 43 screwed and fixed to the lower part of the hydraulic cylinder 6, and is adapted to move up and down together with the movable member 20. Reference numeral 45 designates a support member which is also screwed and fixed to the lower part of the hydraulic cylinder 6 and into which the cylinder shaft 19 is fitted so as to be vertically movable. A bolt 4 46 is attached to the central lower wall 47 of the movable member 20 into which the lower part of the cylinder shaft 19 is fitted and fixed.
8. A support member connected by a nut 49, and a plate-shaped rotor 50 is fitted into this support member 46 via an upper steel ball 57.

Then, the rear end of the tension coil spring 51 is latched to the outside of the peripheral edge of the plate-shaped rotor 50 so as to form a horizontal cross, and the front end of the tension coil spring 51 is placed above the frame-shaped pusher 7. This frame-shaped pusher 7 is connected to the peripheral end portion, and the container B to be cleaned is pressed from the back side and fixed on the turntable 2.
Even when the back surface (bottom surface) of the container B to be cleaned is inclined to one side and is not in a horizontal state, the lower surface of the frame-shaped pusher 7 is pressed against the inclined back surface of the container B to be cleaned by the tension coil spring 51. The container B to be cleaned is securely fixed to the turntable 2.

With this configuration, the cleaning fluid forced through the bypass 39 is forced into the upper chamber 17 of the hydraulic cylinder 6, and this fluid pressure lowers the cylinder valve 18 as shown in FIG.
At the same time as the pusher 9 is lowered, the pusher 7 is lowered via the movable member 20, and the pusher 7 is placed on the back side of the container B to be cleaned ( The pusher 7 reliably rotates the container B to be cleaned together with the pusher 7 as the turntable 2 rotates horizontally.

During this rotational movement of the container B to be cleaned, the cleaning liquid is sprayed intensively from each cleaning nozzle toward the upper and lower circumferential surfaces of the container B to be cleaned from the upper and lower sides, thereby completely cleaning the container B.

When the pusher 7 descends, the resilient strip 8, in the case of a tension coil spring, is elastically stretched and remains in the elastically stretched state until the water pressure on the cylinder shaft 19 is released, and the container to be cleaned by the pusher 7 is It is designed to keep B pressed. After completing the main cleaning and final cleaning (rinsing) of the container B to be cleaned, the liquid feeding pipes 14, 15, 1 are operated by the liquid feeding pumps P ₁ and P ₂ .
6 and the liquid sending pipes 24 and 25, and the water pressure to the hydraulic cylinder 6 is temporarily stopped. Therefore, the water pressure on the upper chamber 17 of the hydraulic cylinder 6 is reduced, and by overcoming this water pressure, the repulsive force (elastic restoring force) of the elastic strip 8 causes the pusher to move together with the cylinder shaft 19 via the movable member 20. 7 can be raised to restore the state shown in FIG.

As the pusher 7 rises, the container B to be cleaned, which has been completely cleaned, is released and placed in a free state so that it can be carried out from the turntable 2.

As mentioned above, the lower cleaning nozzles 5, in particular, have several of them connected to the forward and reverse rotating body 27 in an upward V-shape, and spray the cleaning liquid onto the entire internal circumferential surface of the container B to be cleaned with strong jet water pressure. Since the container B is completely washed and cleaned, before the container B to be cleaned is pushed from above by the pusher 7, the cleaning liquid is force-fed through the forward and reverse rotating body 27 to the cleaning nozzle 5 at the bottom. When sprayed, the container B to be cleaned is blown away by the water pressure of this sprayed cleaning liquid, resulting in poor cleaning. Therefore, the time for feeding the liquid to the cleaning nozzle 5 is that immediately after the container B to be cleaned is securely pressed by the pusher 7, the time for feeding the liquid to the cleaning nozzle 5 to the upper and side cleaning nozzles 3 is delayed. It is necessary to create a time lag in the pressure feeding of the cleaning liquid to the so-called cleaning nozzle 5.

This time lag effect in sending liquid to the lower cleaning nozzle 5 can be achieved by setting a solenoid device S connected to a delay relay above the sub-tank 52 and connecting a forward/backward rod 53 to the solenoid device S, as shown in FIG. An operating lever 54 is pivotally attached to the tip of the rod 53,
The tip of this operating lever 54 is connected to the lower cleaning nozzle 5.
In a configuration in which the butterfly valve 55 is connected to a butterfly valve 55 provided in the middle of the liquid sending pipe 14 to the container B, and a tension coil spring 56 is connected to the base of the operating lever 54, the main switch is turned on when cleaning of the container B to be cleaned is started. While energizing the solenoid device S and pulling the tension coil spring 56, the advance/retreat rod 53 is slightly pulled, and the butterfly valve 5 is activated via the operating lever 54.
5 is slightly opened and this state is expected to be maintained by the delay relay of the solenoid device S. Then, when the main switch is turned ON, the liquid sending pump P ₁ starts operating, and the cleaning liquid is forced into the liquid sending pipe 14, and the cleaning liquid is injected from the cleaning nozzle 3, and is also forced into the hydraulic cylinder 6. The pusher 7 is moved downward against the elastic force of
Press firmly on top. Immediately after that, the solenoid device S further pulls the advancing/retracting rod 53, and this action causes the butterfly valve 55 to move through the lever 54.
is fully opened, the cleaning liquid from the liquid supply pipe 14 is fully force-fed to the lower cleaning nozzle 5, and the stronger cleaning liquid is sprayed onto the entire inner circumference of the container B to be cleaned which is being rotated horizontally by the turntable 2. The container B to be cleaned is completely washed and cleaned.

Since only the plate rotor 50 provided at the center of the pusher 7 is horizontally rotated along with the horizontal rotation of the container B to be cleaned, the hydraulic cylinder 6 and the cylinder shaft 19 are kept in the same state. There is.

(g) Effects of the invention Even when the bottom of the container to be cleaned is an arcuate surface or an inclined surface, the pressing force of the pusher can be made uniform and the container to be cleaned can be held elastically and stably. When pulling the pusher upward to release the container, at the same time as depressurizing the cylinder by stopping pressure feeding of the cleaning liquid at the end of the cleaning process,
The cylinder shaft can be automatically retracted using the elastic strip, which makes piping for cleaning fluid and other fluids much simpler than before, and it also eliminates the need for locking the cylinder shaft when it retracts, unlike in the past. It is not necessary to equip a special stopper, which greatly simplifies the mechanism, reduces failures, and significantly reduces manufacturing costs.

[Brief explanation of the drawing]

The figures show an embodiment of the container spray washer of this invention. FIG. 5 is a vertical sectional view of the mover section, and FIG. 5 is a vertical sectional view showing the pusher in a lowered state. 1... Box type machine frame, 2... Box frame type turntable, 3... Downward spray cleaning nozzle, 4... Finishing cleaning nozzle, 5... Upward spray cleaning nozzle, 6
... Hydraulic cylinder, 7 ... Pusher, 8 ... Repellent strip, B ... Container to be cleaned.

Claims (1)

[Scope of utility model registration request] A hydraulic cylinder is provided above the center of rotation of a turntable for placing containers to be cleaned, which is horizontally rotatably installed in the cleaning chamber, and whose cylinder shaft is extended downward by the pressure of the cleaning liquid. A rotor is attached to the tip of the cylinder shaft so as to be horizontally rotatable, and a plurality of tension coil springs are connected to an annular pusher arranged to surround the rotor. A container jet washer characterized in that the container jet washer is swingably connected to and held by the rotor via the rotor.