JPH0679705B2 - Liquid jet cleaning method for container inner surface - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to a method for cleaning a container, and more particularly to cleaning a container having a lid or configured so that it can be sealed, and more specifically, The present invention relates to a cleaning method in which a liquid jet is applied to the inside of a container for cleaning.

[Prior Art and its Problems] The following cleaning method has been conventionally used for cleaning a container which is hermetically sealed with a lid or which is originally hermetically sealed, for example, a drum or a similar container which is often used for transporting liquid. Was being implemented.

In one example, the cleaning liquid and the chains are put into the container through the opening of the container, and then the container is rotated to remove unnecessary substances adhering to the inner surface of the container due to friction or collision between the chains and the inner wall of the container, and at the same time, the container is cleaned by the cleaning liquid. The inner surface is cleaned. However, according to the method, in cleaning, a step of charging a cleaning liquid and chains into a container to close the opening after charging, a step of performing cleaning while rotating the container, and a member for closing the opening after the cleaning are completed. It is performed by a process of removing the cleaning liquid and chains from the container, and it takes a lot of time before and after the cleaning as compared with the actual cleaning time, resulting in a wasteful method. . Further, there is a problem that the chain does not reach the sharp corner inside the container and remains unwashed.

As another method, there is a method of spraying a liquid from a nozzle inserted in a container to wash the liquid. Generally, water is used as the liquid, and high-pressure water is preferably used to enhance the cleaning effect and cleaning efficiency. In this method, the high-pressure water is evenly sprayed on the inner surface of the container, so that the water can be efficiently washed including the sharp corners. On the other hand, the water sprayed into the container remains in the container as it is, and the water is opened. There was a problem that it took too long to discharge from the.

[Object and Summary of the Invention] The present invention is intended to eliminate the above-mentioned conventional drawbacks.
The purpose of the present invention is to uniformly and efficiently wash the inside of the drum with high-pressure water, and to quickly discharge the liquid sprayed or put into the container to the outside of the container.

In order to achieve the above object, the present invention carries out cleaning in the following steps. That is, when cleaning a container with a lid or sealable and having two or more openings of a limited size by liquid injection, an air supply means for supplying compressed gas to one opening is provided. At the same time, a liquid supply pipe having a liquid injection nozzle at its tip is inserted into the container from the other opening, liquid is supplied to the liquid supply pipe to eject the liquid from the nozzle, and through the air supply means. A compressed gas is supplied into the container.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail based on a preferred embodiment shown in the drawings.

In the figure, 1 is a drum can that is a container, 2 is a large stopper that is an opening, 3 is a small stopper that is another opening, 4 is a pipe member, 5 is a nozzle, and 6 is an air supply pipe. is there.

When washing the container 1, the surfaces on which the large stoppers 2 and the small stoppers 3 are disposed are arranged so as to face down, and the container 1 is locked at a desired position. Next, the tube member 4 having the nozzle 5 arranged at the tip is inserted into the container 1 from the large plug 2. The pipe member 4 is loosely associated with the large plug 2 and is connected by a water supply means to, for example, a pump device (not shown) so as to supply water, preferably high-pressure water, to the nozzle 5 when necessary. It is configured. The nozzle 5 is positioned at an appropriate position in the container 1, and jets the high-pressure water supplied through the pipe member 4 toward the inner surface of the container 1. As the nozzle 5, a so-called rotary nozzle that rotates by its own high-pressure water jet reaction force can be used, or a nozzle that is rotationally driven by a driving force from the outside can be effectively used, and in the container 1, the pipe member 4 can be used. It is effective if the nozzle 5 is moved up and down with respect to the container 1 so that the high-pressure water jet is evenly projected onto the inner surface of the container 1.

The water sprayed into the container 1 flows out of the container 1 between the large plug 2 and the pipe member 4, but the gap between the large plug 2 and the pipe member 4 is the water projected from the nozzle 5. Since it is generally not large enough to discharge, the large plug 2 and the pipe member 4 are not able to cope with the amount of water projected from the nozzle 5.
The amount of water discharged from the gap between and is smaller, and as a result, the waste water after cleaning or the waste liquid is gradually accumulated in the container 1. Therefore, the lower portion of the container 1, that is, the inner surface on the lid side where the large plug 2 and the small plug 3 are arranged is alienated by the accumulated water or liquid and cleaning cannot be performed.

Conventionally, when water is accumulated in the container 1, the jetting of water from the nozzle 5 is temporarily interrupted to discharge the water in the container 1 and then the cleaning is performed again or after the cleaning is completed all at once. I was waiting for the water in the water to drain naturally over time, but it was a time-consuming and extremely inefficient cleaning method.

Now, since the water sprayed from the nozzle 5 is installed so that the large stopper 2 and the small stopper 3 which are the opening portions of the container 1 are placed below, the water is discharged from the large stopper 2 at the bottom of the container 1, If the pressure inside the container 1 is higher than the pressure outside the container 1 when flowing out, the pressure causes the water in the container 1 to be ejected through the gap between the large plug 2 and the pipe member 4, so that Compressed air is supplied from the air supply pipe 6 through the small plug 3. Then,
When the water accumulated in the container 1 stays so as to close the gap between the large plug 2 and the pipe member 4 and the inside of the container 1 is sealed with the outside, the compressed air fills the container 1 and the accumulated water A large plug 2
It is ejected from the gap between the pipe member 4 and the pipe member 4.

Effectively, if compressed air is sent from the air supply pipe 6 into the container 1 at the same time as the cleaning is started and the cleaning work is performed so that the nozzle 5 is driven to rotate and move up and down in parallel, cleaning / cleaning can be performed in a short time. Can drain water. That is, the compressed air supplied into the container 1 flows out through the gap between the large plug 2 and the pipe member 4 while the waste water or the waste liquid after cleaning is not accumulated in the container 1, and the waste water or the waste liquid is stored in the container 1. When the gap between the large plug 2 and the pipe member 4 is filled up to some extent and the gap between the large plug 2 and the pipe member 4 is closed, the compressed water in the container 1 ejects the waste water or the waste liquid accumulated in the container 1 from the gap between the large plug 2 and the pipe member 4 under pressure.

More effectively, if the container 1 is installed so that the large stopper 2 is slightly lower than the small stopper 3, the waste water or the waste liquid can be discharged more efficiently.

Another use is to jet high pressure water from the nozzle 5 to the container 1
After cleaning the entire interior, it is also possible to send compressed air from the small plug 3 into the container 1 through the air supply pipe 6 to discharge waste water or waste liquid all at once. In this case, draining the pipe member 4 and the nozzle 5 from the large plug 2 to the outside of the container 1 allows smooth drainage in a short time.

[Effects of the Invention] As described in detail above, according to the present invention, since the inside of the container is cleaned by the high-pressure liquid jet, it is possible to clean every corner, and the waste water or waste liquid after cleaning is compressed by compressed air. Since it is quickly discharged to the outside of the container, and cleaning and draining are performed at the same time, drainage can be completed almost at the same time as the end of cleaning, and the time required for cleaning the inner surface of the container can be greatly reduced. Is.

[Brief description of drawings]

FIG. 1 is a vertical side view showing an embodiment of the present invention. In the figure, 1 is a container, 2 is a large stopper, 3 is a small stopper, 4 is a pipe member, 5 is a nozzle, and 6 is an air supply pipe.

Claims (3)

[Claims] 1. An air supply means for supplying compressed air to one opening when cleaning a drum having a lid or sealable and having two or more openings by high-pressure water jetting. From the other opening, insert a liquid supply pipe with a high-pressure water injection nozzle at the tip into the drum can, and supply high-pressure water to the liquid supply pipe to rotate and vertically move the nozzle to inject high-pressure water. And a method for injecting and cleaning liquid inside a drum can, wherein compressed air is supplied into the drum can through the air supply means. 2. The cleaning method according to claim 1, wherein the cleaning is performed while jetting high-pressure water from the nozzle and at the same time supplying compressed air into the drum can. 3. The cleaning method according to claim 1, wherein the cleaning is performed by supplying compressed air into the drum after completing the cleaning by high-pressure water injection.