JPS6287294A - Liquid-injection washing method of inner surface of vessel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a method for cleaning a container, and more particularly to a method for cleaning a container that has a lid or is configured to be sealable. The present invention relates to a cleaning method performed by applying a liquid jet Q'J to the inside of the container.

[Prior art and its problems] For cleaning containers that are sealed with a lid or originally formed into a closed cane, such as drums or similar containers that are often used for transporting liquids, a method such as the following method is used. Cleaning methods were used.

- In the example, a cleaning chain is put into the container from the opening of the container, and then the container is rotated to remove unnecessary substances that have adhered to the inner surface of the container due to friction and collision between the chain and the inner wall of the container. The inner surface of the container is cleaned with a cleaning liquid. However, according to this method, during cleaning,
A process of putting the cleaning liquid and chain into the container and closing the opening after the injection, a process of cleaning while rotating the container, and a process of removing the closing member of the opening after cleaning and removing the cleaning liquid and chain from the container. Compared to the actual cleaning time, the process before and after cleaning takes a lot of time, and is a time-consuming process. Another problem was that the chains could not reach sharp corners inside the container and remained unwashed.

Another method involves spraying liquid from a nozzle inserted into a container for cleaning. Water is generally used as the liquid, preferably high pressure water. In this method, high-pressure water is sprayed evenly over the inner surface of the container, making it possible to efficiently clean even sharp corners. There was a problem in that it took too long to discharge.

[Purpose and Summary of the Invention The present invention aims to solve the above-mentioned conventional drawbacks.
The purpose of this is to clean the inside of the container evenly and efficiently, and to quickly drain the liquid that has been injected or poured into the container to the outside of the container.

In order to achieve the above object, the present invention performs cleaning in the following steps. That is, when cleaning a lidded or sealable container having two or more openings by liquid jetting, an air supply means for supplying compressed gas to one opening is provided, and the other openings are From there, a liquid supply pipe equipped with a liquid injection nozzle at the tip is inserted into the container, and a liquid is supplied to the liquid supply pipe to cause the liquid to be ejected from the nozzle,
Further, compressed gas is supplied into the container through the air supply means.

[Embodiment of the Invention] The present invention will be explained in more detail below based on a preferred embodiment shown in the drawings.

In the figure, l is a tram can which is a container, 2 is a large frame which is an opening, 3 is a small frame which is another opening, 4 is a pipe member, δ is a nozzle, and 6 is an air supply pipe. be.

When cleaning the container 1, the large frame 2 and the small frame 3 are placed so that the surfaces on which they are disposed are facing down, and locked at a desired position. Next, from the large frame 2, a pipe member 4 with a nozzle 5 arranged at the tip
Insert into container l. The tube member 4 is loosely associated with the main frame 2 and is connected to a water supply means, for example, a pump device (not shown), so as to flood water, preferably high-pressure water, to the nozzle 5 when necessary. It is composed of The nozzle 5 is positioned at an appropriate position within the container 1, and injects high-pressure water supplied through the tube member 4 toward the inner surface of the container 1. As the nozzle δ, a so-called rotary nozzle that rotates by its own high-pressure water jet reaction force may be used, or a nozzle that is rotationally driven by an external driving force may be effectively used. It is effective to move the nozzle 5 up and down by moving it up and down with respect to the container, so that the high-pressure water jet is evenly projected onto the inner surface of the container 1.

The water spouted into the container 1 flows out of the container 1 from between the large frame 2 and the pipe member 4.
Since the gap is generally not wide enough to drain the water projected from the nozzle 5,
The amount of water discharged from the gap between the large frame 2 and the pipe member 4 is not proportional to the amount of water projected from the nozzle 5, and as a result, waste water or waste liquid after cleaning gradually accumulates in the container l. I'm going to go. As a result, the lower part of the container 1, that is, the inner surface of the full lid on which the large frame 2 and small container 3 are disposed, becomes surrounded by accumulated water or liquid, making it impossible to clean the container.

Conventionally, when water accumulated in the container 1, the jetting of water from the nozzle 5 was temporarily interrupted, the water in the container 1 was drained, and then the container 1 was washed once or washed θ all at once. Afterwards, the water in the container 1 was allowed to drain naturally over time, but this was a time-consuming and inefficient cleaning method.

Now, the water injected from the nozzle 5 flows out from the large frame 2 at the bottom of the container 1, since the large frame 2 and small frame 3, which are the openings of the container l, are located at the bottom. At this time, if the pressure inside the container 1 is higher than the pressure outside the container 1, water in the container 1 will be ejected through the gap between the large frame 2 and the pipe member 4 due to the pressure. Compressed air is supplied from the air supply pipe 6 through the air supply pipe 6. Then,
In a state in which the water accumulated in the container 1 closes the gap between the large frame 2 and the pipe member 4 and the inside of the container 1 is sealed from the outside, compressed air fills the container 1 and removes the accumulated water. Broad frame 2
The liquid is ejected from the gap between the pipe member 4 and the pipe member 4.

Effectively, cleaning can be carried out in a short time by feeding compressed air into the container 1 from the air supply pipe 6 at the same time as cleaning starts, and by driving the nozzle 5 in parallel rotation and vertical motion. Can be drained. That is, while there is no waste water or liquid remaining in the container 1 after washing, the compressed air supplied to the container l flows out through the gap between the large frame 2 and the pipe member 4, and the waste water or liquid remains in the container 1 to some extent. When the compressed air in the container 1 cools down the gap between the large frame 2 and the pipe member 4, the wastewater or waste liquid accumulated in the container 1 is forced to blow out under pressure from the gap between the canine 2 and the pipe member 4.

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

In another use, high pressure water is sprayed from the nozzle 5 to
After cleaning the entire interior, it is also possible to send compressed air into the container l from the small frame 3 through the air supply pipe 6 to discharge the waste water or waste liquid all at once. In this case, it is better to remove the tube member 4 and nozzle 5 from the large frame 2 to the outside of the container 1.
Nori water can be used smoothly and in a short time.

[Invention Q Effects] As detailed above, according to the present invention, since the inside of the container is cleaned by high-pressure liquid injection, it is possible to clean every nook and cranny, and the waste water or waste α after cleaning can be compressed. Since the water is quickly discharged out of the container using air, and cleaning and drainage are performed at the same time, drainage can be completed almost at the same time as cleaning is completed, significantly reducing the time required to clean the inside of the container. It is something that

[Brief explanation of drawings]

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

Claims (5)

[Claims] (1) When cleaning a lidded or sealable container with two or more openings by liquid jet, an air supply means for supplying compressed gas to one opening is provided, and the other openings are A liquid supply pipe equipped with a liquid injection nozzle at the tip is inserted into the container from the part, and liquid is supplied to the liquid supply pipe so that the liquid is jetted from the nozzle, and compressed gas is supplied into the container through the air supply means. A liquid jet cleaning method for the inside of a container, characterized by supplying the following: (2) The cleaning method according to claim 1, wherein the cleaning is performed by supplying compressed gas into the container at the same time as jetting the liquid from the nozzle. (3) The cleaning method according to claim 1, which is carried out by supplying compressed gas into the container after cleaning by liquid jet is completed. (4) The cleaning method according to claim 1, wherein the liquid jetted from the nozzle is water. (5) The cleaning method according to claim 1, wherein the gas supplied into the container is compressed air.