JPH0154107B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for treating the inside of a recycled open drum can, and mainly relates to a method for cleaning and polishing the inside of a 200-size open drum can. .

(Prior Art) Conventionally, as a method for internal treatment of drums for recycling, the residue inside the drum is burned by heating the drum, and then a scraping member such as a chain is stored inside the drum, and the drum is then transferred to a rotating machine. A method such as chain washing for closed type drums involves spinning the drum to apply an impact to the inner surface of the drum to remove rust, etc., and a method for cleaning open type drums in which granular materials such as iron particles or sand are sprayed onto the rust inside the drum. Methods such as shot blasting and sand blasting have been used.

In addition, as a brush body for cleaning containers other than drums, a predetermined interlocking device is installed on the rotating shaft rotated by the prime mover to rotate the four rotating shafts in conjunction with each other, and each of the four shafts is provided with a brush for cleaning the corner of the container. In addition, there is an automatic cleaning device for square cans or cylinders (Japanese Patent Publication No. 46-29355), or cleaning of the inner surface of ingot cases in which a cup with steel wire flocked is attached to a drum with steel wire flocked on the outer circumference. Brush (Jitsukai 50-58016
Publication No.) etc. are known.

On the other hand, abrasives made of polyamide resin processed with silicon carbide (crystalline silicon carbide) are widely known. This abrasive is mainly used for polishing printed circuit boards, polishing floors, scraping concrete surfaces, etc. This abrasive has a mixing ratio of silicon carbide to polyamide resin of 15% to 30%, and each component is processed into 60 mesh granules, which are then mixed and pressure molded to form particles of 1 mm to 1.5 mm in diameter. It is formed in the form of a thread (an abrasive made by processing silicon carbide on nylon 12, manufactured by DuPont in the United States, etc., is well known).

(Problems to be Solved by the Invention) However, these conventional methods for treating the inside of a drum each have the following drawbacks.

That is, according to chain cleaning, it is necessary to rotate the drum itself that houses the chain inside, and therefore, a large-scale device is required to grip and rotate the drum. Moreover, since the chain tends to fly out when the drum rotates, this chain cleaning is only possible for closed type drums and is not suitable for open drums.

Furthermore, when shot blasting or sandblasting is used, dents are created on the inner surface of the can at the same time as removing rust, etc., and there is a risk that the drum itself may be damaged.

Furthermore, if the dirt inside the drum is complex, such as a large amount of oily substances adhering to the rusted surface, an appropriate internal treatment should be carried out to remove the rust and oily substances. The types of liquid will be different. Therefore, in the past, it was necessary to change the polishing brush when the type of internal treatment liquid was different, so the treatment process up to the rust removal work, which is the most important part of the internal treatment process, was extremely difficult. There was an inconvenience that it became complicated.

In addition, various cleaning devices and cleaning brushes for cleaning containers other than drums are suitable for cleaning the corners of rectangular containers, the inner surface of cylinders, the inner surface of ingot cases, etc. It has been difficult to solve the various problems associated with rust removal treatment inside drum cans. That is, in order to remove rust that has firmly adhered to the inside of the drum, it is impossible to remove it simply by increasing the number of brushes or rotating a rotating brush with bristles of steel wire or the like inside the drum.

Even if these brushes were to be used in open drums for recycling, since an acidic internal treatment liquid is used to treat the rust that is most stubbornly stuck inside the drum, steel wire brushes would not be suitable. In the body, the brush body itself gets rusted by this acidic treatment liquid, and along with the rust inside the drum, there are durability problems such as the steel wire brush body gradually melting. Furthermore, if a large amount of different components adhere to the rusted surface, a treatment solution of a different type from the rust treatment solution must be used. In this case, the brush body to which the internal treatment liquid is attached must be replaced with a different brush body for each type of internal treatment liquid.

Therefore, the present invention was created to solve the above-mentioned problems by focusing on the abrasion resistance characteristics and chemical resistance of the abrasive made by processing silicon carbide into the polyamide resin. To provide a method for treating the inside of an open drum can for recycling by which cleaning and polishing can be performed without damaging the inside surface, and in addition, stubborn rust etc. can be completely removed in an extremely simplified internal treatment process.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention removes the rust adhered to the inside of an open drum for recycling using brush bristles made of an abrasive made of polyamide resin processed with silicon carbide. The feature is that the polishing process of polishing with a polishing material and the cleaning process of cleaning the polished rusted surface with an acidic internal treatment liquid are performed at the same time.

(Function) According to the present invention, in the polishing process, the brush bristle material made of an abrasive agent made of polyamide resin processed with silicon carbide polishes the rusted surface adhering to the inside of the open drum can for recycling. The surface is peeled off sequentially.

In addition, during the cleaning process, the acidic internal treatment liquid that cleans the inside of the can gradually dissolves the rust surface that is successively removed, making it easier to remove the rust.

The brush bristle material, which is made of abrasive material made of polyamide resin processed with silicon carbide, has sufficient durability against the acidic internal treatment liquid (weakly acidic) of drum cans, and is also durable against other alkaline internal treatment liquids. .

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

In the polishing step, a roll brush 2 is formed with bristles 1 made of an abrasive made of polyamide resin processed with silicon carbide, and the brush bristle material 1 is implanted on the side and tip.
This roll brush 2 is used for recycling open drum can 5
The brush body 4 is forcibly fitted into the interior, and the brush body 4 is rotated to bring the brush bristle material 1 into sliding contact with the entire inner surface of the body 5A of the drum 5 and the inner surface of the base plate 5B for polishing.

Next, as a cleaning step, as the brush body 4 rotates, an acidic internal treatment liquid most suitable as a treatment liquid for removing rust inside the drum 5 is sprayed inside the drum 5 using a water discharge pipe 14 or the like. At this time, the rotation of the brush body 4 and the dispersion of the internal processing liquid are performed simultaneously.

Furthermore, if the dirt inside the drum is complex, such as a large amount of oily substances adhering to the rusted surface, use an internal treatment liquid suitable for removing the rust and oily substances. Although the types are different, the type of internal treatment liquid may be changed while performing the polishing process using the brush bristle material 1 made of an abrasive made of polyamide resin processed with silicon carbide. However, when removing the most stubbornly fixed rust during the internal treatment process, be sure to use an acidic internal treatment solution.

The roll brush 2 used in the present invention is, for example,
A roll brush member 6 is formed by converging brush bristles 1 made of an abrasive obtained by processing silicon carbide into a polyamide resin into a substantially linear body, and this roll brush member 6 is inserted into a frame 7 with a gap formed therebetween. It is wound around the side surface and provided so as to be in sliding contact with the inner surface of the body 5A of the open drum can 5 for recycling. At this time, the frame 7 is
Two disk bodies 8 having a diameter smaller than the diameter of the drum 5 may be connected by a rod-shaped support member 9 to form a substantially cylindrical shape. Further, instead of the disk body 8, a bent rod-like object or the like may be used to provide a substantially disk shape. Furthermore, by providing the reinforcing member 10 for fixing the support member 9 inside the frame 7, the frame 7 can be formed strongly.

The roll brush member 6 has a base 11 having a substantially U-shaped cross section, and a bent part of the brush bristle material 1, which is folded in half, with the core wire 12 straddling the core wire 12. It is planned to be installed by inserting and clamping. By setting the diameter of the roll brush 2 to be slightly larger than the inner diameter of the drum can 5 and forcibly inserting it into the drum can 5, more powerful cleaning and polishing can be performed, and even the inside of the beat part 5C can be carried out. can also be completely treated.

The base plate brush 3 is fixed to the tip of the roll brush 2, and has a brush member 13 radially arranged in which brush bristle material 1 made of an abrasive made of polyamide resin processed with silicon carbide is gathered into a substantially linear body. It is something. At this time, the brush member 13 may be directly fixed to the tip of the roll brush 2, or
Alternatively, the brush member 13 may be first fixed to a disc-shaped or plate-shaped base, and then the base may be fixed to the tip of the roll brush 2. Furthermore, it is convenient to provide a gap in the center of the radial brush member 13 that is approximately the same diameter as the tip of the water discharge pipe 14, which will be described later, when spraying the internal treatment liquid onto the base plate 5B. be. Furthermore, by tilting the brush bristles 1 at the radial end of the radial brush member 13 toward the body of the drum, the corners of the joint between the body 5A and the base plate 5B can be thoroughly cleaned and polished. Become what you can. Furthermore, the roll brush member 6 may be cut into an appropriate length to form the brush member 13.

The water discharge pipe 14 has a water discharge hole 15 formed in a closed end portion and a side surface thereof, and is fixed to the shaft core of the brush body 4. At this time, by providing the distal end portion of the water discharge pipe 14 to fit into the radial center portion of the brush member 13, the water discharge pipe 14 can be fixed even more strongly.

In addition, in the figure, the code|symbol M1 is a power part for rotation, and M2 is a power part for water supply.

(Effects of the Invention) The present invention achieves its original purpose by employing the method described above.

That is, there is a polishing process in which the rust surface adhering to the inside of the open drum can 5 for recycling is polished with a brush bristle material 1 made of an abrasive made of polyamide resin treated with silicon carbide, and the polished rust surface is subjected to acid internal treatment. By performing the cleaning step of cleaning with a liquid at the same time, cleaning and polishing can be performed without damaging the skin inside the drum 5.

Moreover, the brush bristle material 1 used in the polishing process is
It is made of an abrasive made by processing silicon carbide into polyamide resin, and both the polyamide resin and silicon carbide have excellent chemical resistance. Therefore, it has sufficient durability against weakly acidic treatment solutions for treating rust that is most stubbornly stuck inside drums. Furthermore, it has durability against other alkaline internal treatment liquids, so even if you sequentially use acidic, alkaline, neutral, etc. internal treatment liquids without cleaning the brush bristle material 1 itself, the brush bristle material 1 will remain stable. Since it does not weaken or wear out, an internal treatment liquid suitable for the nature of rust, dirt, etc. inside the drum 5 can be freely used. Furthermore, even if several types of internal processing liquids are used, the same polishing process can be performed without being affected by the effects of the internal processing liquids. Furthermore, it is possible to prevent sparks from being generated during polishing, which is extremely effective in preventing danger.

Furthermore, at the same time as the polishing process, a cleaning process is performed in which the rusted surface is cleaned with an acidic internal treatment liquid, so the drum can 5
The rust adhering to the inside is sequentially dissolved from the surface layer to the deep layer, and the dissolved rust surface inside the drum can 5 can be washed and polished extremely smoothly. Therefore, stubborn rust etc. can be completely removed with an extremely simplified internal treatment process.

Therefore, unlike conventional chain cleaning, a large-scale device for gripping and rotating the drum is not required, and there is no risk of the chain popping out during cleaning.

Further, it is possible to prevent dents on the inner surface of the can due to blasting treatments such as shot blasting and sandblasting that occur at the same time as removing rust, etc., thereby extending the life of the recycling drum itself.

As explained above, according to the present invention, the surface inside the drum can be cleaned and polished without damaging the surface inside the drum, and stubborn rust etc. can be completely removed through an extremely simplified internal treatment process. It has extremely excellent effects such as being able to be washed and polished without damaging it, further simplifying the internal treatment process, and extending the life of the recycling drum itself.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a sectional view showing an example of use, and FIG. 2 is a sectional view taken along the line A--A in FIG. 1. 1...Brush bristles, 2...Roll brush, 3...
...Main plate brush, 4...Brush body, 5...Drum can, 5A...Body part, 5B...Main plate, 5C...Beat part, 6...Roll brush member, 7...Frame body,
8...Disc body, 9...Supporting member, 10...Reinforcing member, 11...Base, 12...Core wire, 13...Brush member, 14...Water pipe, 15...Water hole, M1
...Rotation power unit, M2...Water supply power unit.

Claims (1)

[Claims] 1 A polishing process in which the rusted surface adhering to the inside of an open drum can for recycling is polished with a brush bristle material made of an abrasive made of polyamide resin mixed with silicon carbide, and the polished rusted surface is cleaned with an acidic internal treatment liquid. A method for internal treatment of open drum cans for recycling, characterized in that a cleaning step is simultaneously performed.