JP3380351B2 - Defoaming device for cleaning tank - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a defoaming device for a washing tank for washing a container such as a bottle.

[0002]

2. Description of the Related Art Conventionally, as a defoaming device for a bottle washing machine, an ultrasonic oscillator and a bubble detecting electrode are provided above the cleaning liquid in a washing tank to detect the presence or absence of bubbles in the bubble detecting electrode. Accordingly, a device that destroys bubbles by vibrating the diaphragm of the ultrasonic oscillator and eliminates bubbles floating on the cleaning tank liquid surface (Japanese Patent Publication No. 6-3690).
No. 9 publication) exists.

[0003]

Generally, it is 1.0 to 1.5.
% Caustic soda cleaning liquid is used, but due to additives used to improve the cleaning performance and the amount of dirt removed from the container, a large amount of bubbles are generated and float on the surface of the cleaning tank during the operation of the cleaning device. . However, the above-described conventional defoaming device that defoams bubbles is provided with an ultrasonic oscillator and a bubble detection electrode, and the ultrasonic oscillator is turned on / off in response to the presence / absence of bubbles.
Off control must be performed. Therefore, in the case of this device, there is a drawback that an expensive ultrasonic oscillator or the like is required, and at the same time, it is necessary to consider the mounting space.
In view of these circumstances, the present invention does not require an ultrasonic oscillator, a bubble detection electrode, an on / off control device, and enables defoaming simply by changing the position of the nozzle and the trajectory of the container transport device. It is an object of the present invention to provide a defoaming device for a cleaning tank.

[0004]

The present invention employs the following technical means in order to solve the above problems. In the invention according to claim 1, in a container cleaning device comprising a container transfer device for transferring a container, a cleaning tank for storing caustic cleaning water, and an injection nozzle for injecting caustic cleaning water into the transferred container, The jet nozzle is provided above the level of the caustic wash water of the washing tank, and the trajectory of the container transporting device that travels above the washing bath is provided higher than the jetting nozzle, and cleaning is performed on the traveling direction side of the container transporting device. We adopted the technical means of providing it at a position lower than the tank peripheral wall. In addition, in addition to the invention according to claim 1, in the invention according to claim 2, the cleaning tank is reflected above the traveling path of the container transfer device and below the peripheral wall of the cleaning tank on the advancing direction side of the container transfer device. The technical means of providing a plate was adopted.

[0005]

In the present invention, as a result of adopting the above technical means, generally, the foaming of the injection nozzle is determined by the supply conditions of water and air, and no matter how easily the liquid foams, the foam will rise above the container mouth. I knew no phenomenon. The position of the container mouth was determined by making the best use of this phenomenon, and as a result, there was no air supply near the container mouth, so that the liquid surface of the foam stopped.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a schematic front view showing a container cleaning device equipped with a defoaming device for a cleaning tank according to the present invention, and FIG. 2 is an enlarged front view of a main part of the second embodiment.

The outline of the present invention will be described with reference to FIG. 1. A mono-end type container cleaning device in which a supply container part and a discharge container part are in the same direction. A plurality of sprockets are provided in a can body 1 of the cleaning device. 2 are arranged, and an endless container transporting device 3 is bridged over each sprocket 2. As is conventionally known, the container transporting device 3 is provided with a chain on both sides in the traveling direction, a plurality of brackets provided between the chains, and a plurality of holders provided on each bracket, and is housed in each holder. It is designed to transport the container.

A supply section 4 for supplying a container into the holder of the container transfer device 3 is provided on one side of the can body 1, and the container is discharged above the supply section 4 to discharge the container from the holder. A section 5 is provided.

The container supplied from the supply unit 4 into the holder of the container transporting device 3 is dipped in the preliminary dipping tank 6 and then in the primary caustic dipping tank 7.
The container lifted up from is then transported to the secondary caustic washing tank 9 after passing through the primary caustic washing portion 8, where the secondary caustic washing portion provided in the secondary caustic washing tank 9 is provided. 10
Secondary cleaning is performed at.

After passing through the secondary caustic cleaning section 10, the container passes through a rinse cleaning section 14 including a secondary recovered water finishing cleaning section 11, a primary recovered water final cleaning section 12 and a clean water final cleaning section 13. At this time, water is sprayed in sequence, and the container that has passed through the rinsing and cleaning section 14 and has been cleaned is discharged from the discharging section 5 to the outside of the box 1.

The cleaning liquid has a predetermined temperature and concentration, and is, for example, 70 to 80 ° C., 1.0 to
Use 1.5% caustic soda solution, and 1 from the injection nozzle
Injection is performed at an injection pressure of ˜2 kgf / cm ² G.

Next, the first embodiment of the present invention will be described with reference to FIG.
It will be described in detail based on.

In the container cleaning device, a secondary caustic cleaning tank 9 for storing caustic cleaning water is provided, and an injection nozzle 15 of a secondary caustic cleaning section 10 is provided above the surface of the cleaning water of the secondary caustic cleaning tank 9. The locus of the endless container transporting device 3 provided with a holder that travels above the secondary caustic washing tank 9 is provided at a position higher than the jet nozzle 15 and the secondary caustic washing tank 9 corresponding to a partition plate is provided. The endless container transfer device 3 is provided at a position lower than the peripheral wall 17 on the advancing direction side of the container transfer device (in other words, this corresponds to raising the peripheral wall of the secondary caustic washing tank 9).

A second embodiment of the present invention will be described in detail with reference to FIG.

FIG. 2 is an enlarged view of the essential parts of the second embodiment of the present invention. As can be understood from FIG. 2, the secondary caustic cleaning tank 9 is provided with a holder for carrying an endless container. A reflection plate that covers the endless container transfer device 3 above the traveling path of the device 3 and below the peripheral wall 17 of the secondary caustic washing tank 9 corresponding to the partition plate on the traveling direction side of the container transfer device. 16
Is a defoaming device for a cleaning tank in which is horizontally arranged.

Next, the operation will be described.

Generally, the foaming of the injection nozzle portion is determined by the supply state of water and air, and the trajectory of a partition plate installed higher than the container opening or a container transporting device running above the secondary caustic washing tank 9 is injected. Since the cleaning tank peripheral wall 17 on the advancing direction side of the container transporting device is provided higher than the nozzle, even if the liquid easily foams, bubbles do not rise above the container mouth.

In the second embodiment, for example, when the injection nozzle 15 is of a fixed type, the jet may come out from the mouth of the container and reach a high ratio. In this case, a reflection plate 16 for reflecting the jet spray from the spray nozzle 15 is installed above the endless container transport device 3 having a holder, and the container transport of the secondary caustic washing tank 9 corresponding to a partition plate is performed. By setting the locus of the endless container conveying conveyor 3 provided with the holder so as to be located at a position lower than the height of the peripheral wall 17 on the advancing direction side of the apparatus, the defoaming effect can be more reliably enhanced.

[0019]

As a result of adopting the above configuration, the present invention provides
The following effects can be obtained. (1) Since the tank partition plate is higher than that of the conventional jet portion, the allowable amount of foaming increases. (2) In the case of the second embodiment, since the jet portion is sealed with the reflecting plate by the bubbles, the carry-in amount of air required for the foaming is
Since it is limited only to the internal volume of the container, foaming itself can be suppressed. (3) The amount of defoaming material used can be reduced.

[Brief description of drawings]

FIG. 1 is a schematic front view showing a container cleaning device equipped with a defoaming device for a jet cleaning tank according to a first embodiment of the present invention.

FIG. 2 is a schematic enlarged front view showing a main part of a container cleaning device equipped with a defoaming device for a jet cleaning tank according to a second embodiment of the present invention.

[Explanation of symbols]

1 can body 2 sprocket 3 endless container carrier 4 supply unit 5 discharge unit 6 preliminary dipping tank 7 primary caustic dipping tank 8 primary caustic cleaning unit 9 Secondary caustic cleaning tank 10 Secondary caustic cleaning section 11 Secondary recovery water finishing cleaning section 12 Primary recovery water finishing cleaning section 13 Fresh water finishing cleaning section 14 Rinse cleaning section 15 Nozzle 16 Reflector 17 Perimeter wall

Claims (2)

(57) [Claims] 1. A container cleaning device comprising: a container transfer device for transferring a container; a cleaning tank for storing caustic wash water; and an injection nozzle for injecting caustic wash water into the transferred container. It is provided above the level of the caustic wash water of the cleaning tank, and the locus of the container transporting device that travels above the cleaning bath is provided higher than the injection nozzle, and lower than the circumferential wall of the cleaning tank on the traveling direction side of the container transporting device. A defoaming device for a cleaning tank, which is provided at a position. 2. The cleaning tank is provided with a reflection plate above the traveling path of the container transporting device and below the peripheral wall of the cleaning bath on the traveling direction side of the container transporting device.
Defoaming device for the cleaning tank described.