JPH0299180A - Method for cleaning vessels - Google Patents

Abstract

PURPOSE: To enable cleaning with ease and at low cost and also with a high degree of cleaning farce by storing a cleaning liquid and a large number of lumps of ice in a vessel to be cleaned, etc., and causing these lumps to collide against the inside surfaces of the vessel by agitating them. CONSTITUTION:A cleaning liquid 2 and a large number of lumps of ice 3 are stored in a vessel to be cleaned 1, whereby the inside surfaces of the vessel 1 are cleaned by causing the lumps of ice 3 to collide against said surfaces by agitating the liquid and lumps of ice by means of an agitator 4. This cleaning method can be carried out with ease and at low cost and also with a high degree of cleaning force.

Description

[Detailed description of the invention] "Industrial application field" The present invention relates to a method for cleaning the inner surface of a container or the like.

"Prior art" When cleaning the inner surface of containers used in atomic couplants, etc., for example, ultrasonic cleaning methods that clean while oscillating ultrasonic waves in a cleaning liquid such as water, ice cream that sprays ice particles on the surface, etc. Blasting methods and jet water cleaning methods are used.

"Problems to be Solved by the Invention" However, although ultrasonic cleaning methods and ice blasting methods can exhibit high cleaning power, they are expensive and bulky, making them difficult to handle. Although the a-purification method using a jet water stream can be carried out inexpensively and easily, it has the drawback of poor cleaning power.

The present invention has been proposed in view of the above circumstances, and aims to provide a cleaning method that can be carried out inexpensively and easily, and that can exhibit high cleaning power.

"Means for Solving the Problem" The cleaning method of the first invention stores a cleaning liquid and a large number of ice blocks in a container, etc., and stirs them, thereby causing the ice blocks to collide with the inner surface of the container, etc. It is characterized by cleaning the inner surface.

The cleaning method according to the second aspect of the invention is characterized in that a float is floated in the cleaning liquid, and ice cubes are placed between the float and the inner surface of a container, etc., and the cleaning liquid is stirred.

1. The cleaning method of the first invention stirs the cleaning liquid and the ice block together to generate a rotating flow, and the rotating flow causes the ice block to collide with the inner surface of the container, etc., and the contaminants are peeled off by the kinetic energy of the rotating flow. At the same time, it can be completely removed from the inner surface by washing it away with a cleaning solution.

Further, in the cleaning method of the second invention, the amount of ice blocks can be reduced by using the float, and all the ice blocks can be brought closer to the inner surface of the container or the like.

"Example" Embodiments of the present invention will be described below based on the drawings.

FIG. 1 shows an embodiment in which the object to be cleaned is a container in the first invention, in which a cleaning liquid 2 such as water and a large number of water bodies 3 are placed in a cylindrical container 1 with the top open. is stored, and ice cubes 3 are floating on the cleaning liquid 2,
Stirring is performed by a stirring device 4 attached to the upper end of the wall of the container 1.

The stirring device 4 is attached to a support 5 fixed to the wall of the container 1.
A drive source 6 such as a motor is attached, and a shaft 7 rotated by the drive source 6 is arranged diagonally downward, and a screw 8 is provided at the lower end of the shaft 7.

Then, this screw 8 is connected to the water mass 3 as shown in FIG.
By rotating the cleaning liquid 2 and the water mass 3 while placing them slightly below the layer, a rotating flow shown by the arrow is generated by stirring the cleaning liquid 2 and the water mass 3 together. The contaminants are peeled off by the kinetic energy of the contaminants while colliding with the contaminants, and are completely removed from the inner surface by being washed away with the cleaning liquid 3. In this case, by arranging the screw 8 slightly below the layer of water mass 3 to generate a rotational flow only in the upper layer of the cleaning liquid 2,
The rotational force of the screw 8 can be efficiently transmitted to the water mass 3. In addition, when the depth of the container l is large, the height of the layer of the water mass 3 is changed by adjusting the amount of the cleaning liquid 2, and the entire container is cleaned. In addition, since the water mass 3 tends to gather at the center of rotation during stirring, it is desirable to store a sufficient amount of water mass 3 to cover the layer of cleaning liquid 2 even during the stirring.

On the other hand, FIG. 2 shows an embodiment in which the object to be cleaned is a container in the second invention, in which the stirring device 4 is attached to the center of the stay 11 which extends over the upper end of the container l. The axis 7 is directed vertically downward, and
A float I2 floated on the cleaning liquid 2 is provided in the middle of the shaft 7 so as to be movable in the length direction of the shaft 7. This float 12 is placed in the center of the surface of the cleaning liquid 2 and forms a layer of ice cubes 3 in a ring shape along the inner surface of the container 1, and its diameter is set according to the inner diameter of the container l. . Also,
A ballast 13 that balances its buoyancy and weight so that when the screw 8 is placed slightly below the layer of the water body 3, the float 12 is placed penetrating the layer of the water body 3.
is provided.

By carrying out the procedure in this manner, the amount of water mass 3 can be reduced by the amount of float 12 (at the same time, all the water mass 3 can be brought close to the inner surface of container 1, and cleaning can be performed efficiently.

Further, FIG. 3 shows an embodiment in which the object to be cleaned is a pipe in the first invention, and an isolation device 16 for blocking two places in the middle of the pipe 15 to separate the part to be cleaned;
The same stirring device 4 as in each of the embodiments described above is used.

The isolation device 16 consists of two obturators 17A and 17B,
The first obturator 17A is constructed by sandwiching the center portion of a rubber tube 18 filled with compressed air or the like between two disc-shaped leaf springs 19, and tightening both leaf springs 18 with a fastening rod 20. The tube 15 is compressed and expanded in diameter.
It is designed to be brought close to the inner surface of the body. In addition, the second obturator 17B includes a rubber tube 22 provided on the outer periphery of the disk-shaped support 21, and a pressure fluid supply system 23 connected to the rubber tube 22 to inject compressed air, water, etc. By this, the diameter of the rubber tube 22 is expanded and the tube 15 is
It is designed to be brought close to the inner surface of the body. And the second
The stirring device 4 is attached to the support body 21 of the obturator 17B, and its shaft 7 is provided so as to pass through the support body 21. In the case of the example in Fig. 3, it is applied to the pipe 15 in a horizontal state,
A cleaning liquid supply system 24 is connected to the support 21, and after dividing the middle of the pipe 15 by the two obturators 17A and 17B, the cleaning liquid 2 and the water mass 3 are supplied from the cleaning liquid supply system 24. . As described above, the present invention is applicable to the pond of the container, as long as the stirring means such as the screw 8 can be inserted.
It can also be applied to pipes.

Furthermore, FIG. 4 shows an embodiment in which the object to be cleaned is a pipe in the second invention. In this embodiment, valve 31
This example shows an example of cleaning the vicinity of a vertical bend in the vicinity of
and is in a storage state. Further, in this fourth embodiment, the stirring device 32 is configured to generate a rotational flow by circulating the cleaning liquid 2, and a drive source 33 such as a pump is attached to the float 12 floated in the cleaning liquid 2. A suction hole 35 formed in the float 12 and connected by a hose 34
The cleaning liquid 2 is circulated through the discharge hole 36. In this case, the suction hole 35 is provided vertically through the float 12 and connected to the hose 34, and the discharge hole 36 is provided radially in the upper part of the float 12 and connected to the header section 37 at the center. A hose 34 is connected.

Then, if the cleaning liquid 2 and the water mass 3, the hose 34 excluding the drive source 33 of the stirring device 32, and the float 12 are put into the opening 38 in the middle of the pipe 15, and the drive source 33 is put into operation, A vertically rotating flow is generated as shown by the arrow in FIG.

"Effects of the Invention" As is clear from the above description, the cleaning method of the present invention can provide the following effects.

(i) Contaminants can be peeled off by colliding with the inner surface of a container etc. using the kinetic energy of ice cubes, and can be completely removed by washing them away with a cleaning solution, thus achieving high cleaning power.

(11) Since the ice cubes and the cleaning liquid are simply stored and stirred, the preparation and stirring operations are easy, and since the ice cubes become water when they melt, they can be mixed with the cleaning liquid after being used for cleaning. It can be easily discharged, post-processing is easy, and it can be carried out simply.

(iii) A device for stirring the cleaning liquid and the ice cubes can also be manufactured easily and inexpensively.

(iv) By floating the 7% ice cubes, the amount of ice cubes can be reduced by the amount of the floats, and all the ice cubes can be brought close to the inner surface of the container, etc., allowing for efficient cleaning.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment in which the object to be cleaned is a container in the first invention; FIG. 2 is a sectional view showing an embodiment in the second invention in which the object to be cleaned is a container; The figure is a cross-sectional view showing an embodiment in which the object to be cleaned is a pipe in the first invention, FIG. 4 is a cross-sectional view showing an example in which the object to be cleaned is a pipe in the second invention, and FIG. FIG. 4 is a vertical cross-sectional view of the float, and FIG. 6 is a cross-sectional view thereof. l... Container, 2... Cleaning liquid, 3...
...Ice block, 4... Stirring device, 5...
Support, 6... Drive source, 7... Shaft, 8...
...Screw 11 ...Stay 12
...Float, 13...Ballast, 15.
...Tube, 16...Isolation device, 17A.1
7B... Obturator, 18... Rubber tube, 19... Leaf spring, 20... Fastening rod, 21... Support body, 22...Rubber tube, 23...Pressure fluid supply system, 24...
...Cleaning liquid supply system, 31...Valve, 32.
... Stirring device, 33 ... Drive source, 34 ...
...Hose, 35...Intake port, 36...
...Discharge port, 37...Header section. Applicant: Ishikawajima-Harima Heavy Industries Co., Ltd. Figures 2 and 3

Claims (2)

[Claims] (1) A container characterized by storing a cleaning liquid and a large number of ice cubes in a container, etc. to be cleaned, and stirring them to cause the ice blocks to collide with the inner surface of the container, etc., while cleaning the inner surface of the container, etc. etc. cleaning method. (2) The method for cleaning containers, etc., according to item 1, characterized in that a float is floated in the cleaning liquid stored in the container, etc., and the ice cubes are placed between the float and the inner surface of the container, etc., and then stirred. .