JPH03114578A - Brush roll apparatus for continuous treatment line of metal strip - Google Patents

Abstract

PURPOSE:To prevent the adhesion of washing oil to an oil uncoated material by implanting a brush in the peripheral wall part of a roll shaft and providing jet orifices turned to the brush thereto. CONSTITUTION:A brush roll 2 is rotated in the direction reverse to a strip passing direction in contact with a strip 12. Washing oil is injected to a brush 4 from the jet orifices 17 of a roll shaft 2'. The foreign matter such as dust bonded to the surface of the strip 12 is removed by the brush 4 and washed off by the washing oil. The washed strip 12 is drained by a wringer roll 3 to move to a post-process as a cleared strip. The contaminated washing oil is accumulated in the contaminated oil tank 6 provided to the bottom part of a housing 5 and filtered by a filter 8 through a contaminated oil pump 7 to be recirculated and reused. By this method, washing effect can be enhanced in low cost.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a brush roll device that removes foreign matter such as dust adhering to the plate surface of a metal strip by cleaning in a continuous metal strip processing line. .

<Conventional technology> Conventionally, in surface treatment lines and finishing lines for metal strips such as cold-rolled steel sheets, foreign matter such as dust adhering to the surface of metal strips is removed by cleaning with cleaning oil, and then oil is applied. The metal strips are made into coils and shipped to customers. These lines are intended for lubricating metal strips.

In recent years, demands from customers have become increasingly strict regarding the cleanliness of the lubricated plate surfaces of steel strips shipped from steel sheet manufacturers, for example.

By the way, there are cases in which steel sheet manufacturers process not only lubricated material by wet processing but also unlubricated material by dry processing in a continuous steel strip processing line. When switching the strip from an oil-coated material to an unoiled material, there is a problem that the cleaning oil before the change drips onto the surface of the non-oiled material strip and contaminates it, and countermeasures are required.

There are two methods for strip cleaning: the spray nozzle method and the brush roll method.When switching the strip from an oil-coated material to an unoiled material, the spray nozzle method only requires stopping the supply of cleaning oil to the spray nozzle. It is easy to deal with. However, the spray nozzle type uses the spraying power of the cleaning oil to wash away foreign matter such as dust adhering to the board surface, so it requires about twice as much cleaning oil as the brush roll type, which cleans by scraping it off with a brush. Cos)・
becomes higher.

As shown in FIG. 4, as a countermeasure against unlubricated materials using the brush roll type, which is economical and has low running costs, when processing the lubricated materials of the strip 12, a pair of brush rolls 2 are installed online and the strip 12 is Foreign matter such as dust adhering to the plate surface is removed by a brush roll 2 while supplying cleaning oil.

When switching from oil-coated material to non-oil-coated material, the pair of brush rolls 2 are moved out of the line as shown by the arrows, and the cleaning oil adhering to the brush rolls 2 drips onto the plate surface of the strip 12. Try not to.

Alternatively, as shown in Fig. 5, a pair of upper and lower brush rolls 2
the tray 21 is placed between the upper brush roll 2 and the strip 12,
Measures can also be taken to prevent contamination of the strip 2 by receiving cleaning oil dripping from the upper brush roll 2.

<Problems to be Solved by the Invention> Among the above measures, the means for retracting the brush roll 2 out of the line requires a mechanism for moving the main body of the brush roll 2 out of the line, resulting in a large-scale structure and a high equipment cost. There are problems in that it is bulky and requires a large space. In addition, the means for raising and lowering the brush roll 2 and inserting the tray 21 between the upper brush roll 2 and the strip 12 requires a considerable amount of space in front or behind the brush roll 2 in order to insert the tray 21. When considering automation, there is a problem that the equipment becomes large-scale.

The present invention solves the problems of the prior art described above, namely, the structure is large-scale and a large space is required (retreating the brush roll, loading the tray), and a large amount of cleaning oil is required (spray nozzle type). This problem has been solved to prevent cleaning oil from adhering to the unoiled material when the same strip processing line performs both wet and dry processing, for example when switching from oiled material to unoiled material in one line. It is an object of the present invention to provide a brush roll device for a continuous processing line of metal strips.

<Means for Solving the Problems> To achieve the above object, the brush roll device for a continuous metal strip processing line of the present invention has a roll shaft having a hollow structure, and brushes are implanted in the peripheral wall of the roll shaft. and an ejection hole facing the brush, a fluid supply pipe for supplying a metal strip processing liquid and a brush drying gas switchably to the hollow roll shaft, and communicating with the hollow roll shaft. It is characterized in that it is installed so that it can be moved up and down on the line, and is configured so that it can be used for either wet processing or dry processing of metal strips.

<Operation> When wet-processing a metal strip, a brush installed on a hollow roll shaft is brought into contact with the plate surface of the metal strip, and its rotation removes foreign matter such as dust attached to the plate surface while supplying fluid. A processing liquid is supplied from the tube into the roll shaft and is ejected from the ejection holes provided in the peripheral wall to clean the strip.

When switching a metal strip from wet processing to dry processing, after stopping the supply of processing liquid, move the roll shaft up and down on the line to separate it from the metal strip, and while rotating the roll shaft, remove the fluid from the fluid supply pipe into the roll shaft. A drying gas is supplied to the brush, and is sprayed from the nozzle toward the brush, which together with the centrifugal force caused by the rotation, dries the processing liquid adhering to the brush. When the drying of the brush is completed, the strip threading is resumed with the roll shaft kept apart, but since the brush is dry, it is possible to prevent the processing liquid from dripping onto the strip.

<Example> The present invention will be described below based on an example not shown in the drawings. In FIG. 1, 2 is a brush roll, 2' is a hollow roll shaft, and the peripheral wall of the roll shaft 2' has brushes 4.
are planted therein, and jet holes 17 are arranged at appropriate intervals in the axial and circumferential directions.

Furthermore, a center hole 2b penetrating in the axial direction is formed in one of the closed ends 2a2a of the roll shaft 2' having a hollow structure, and a fluid supply pipe 11 is connected to the center hole 2b via a rotary joint 16. It's communicating. The fluid supply bamboo knife I branches into fluid supply pipes 11a and llb from the middle, and the fluid supply pipe 11a is equipped with a switching valve +5a, and the fluid supply pipe 11b is equipped with a switching valve +5a.
A switching pulp 15b is provided.

When the switching pulp 15a is opened, cleaning oil flows into the fluid supply pipe 11.
a, 11. It is supplied into the roll shaft 2' through the rotary joint 16 and the center hole 2b, and is ejected from the ejection hole 17 to the brush 4. Further, a fan 13 and a heater 14 are connected to the fluid supply pipe tib.
The gas (air in this case) pumped by heater 1
4, it becomes hot air and flows through the fluid supply pipes 11b and I.
L Pass the roll shaft 2 through the rotary joint 16 and the center hole 2b.
' and is ejected from the ejection hole 17 to the brush 4.

Both ends of the roll shaft 2' are rotatably supported via bearings 1B, 1B, and a boo IJ19 is fixed to one end of the roll shaft 2', and this pulley 19 is connected to the V belt 2.
0 to a rotational drive mechanism (not shown).

FIG. 2 shows a strip surface cleaning device equipped with a brush roll 2, starting from the upstream side with a pinch roll 1 for threading and draining the strip. Brush roll 2. Lingarol 3 for draining (
The brush roll 2 is arranged in a two-row arrangement (the case of two rows is not shown in the figure), and when performing normal wet processing, the brush roll 2 comes into contact with the strip 12 that is threaded in the direction shown by the arrow, and moves in the opposite direction to the strip threading direction. It is rotated by a rotation drive mechanism (not shown).

The cleaning oil is jetted from the jet hole F of the roll shaft 2' toward the brush 4, and foreign matter such as dust adhering to the plate surface of the strip 12 is removed by the brush 4 and washed away with the cleaning oil. The washed strip 12 is drained by a ring roll 3 and becomes a clean strip 12, which is transferred to a subsequent process. Note that if the cleaning oil jetted from the jet holes 17 alone is not sufficient to clean the strip 12, spray nozzles may be arranged before and after the brush roll 2, and the cleaning oil jetted from the spray nozzles may be used to clean the strip 12. It is also possible to use them together.

The dirty cleaning oil used to clean the strip 12 accumulates in a dirty oil tank 6 provided at the bottom of the housing 5. After filtering out foreign matter with a filter 8 via a oil pump 7, the dirty cleaning oil is returned to the tank. 9, and then pump lO
The fluid is fed under pressure from the fluid supply pipe 11a to the brush roll 2 through the above-mentioned route, and is used for circulation.

Here, after washing, water is drained using the linga roll 3, but it is impossible to completely remove the washing oil. Therefore, when processing non-oiled materials, it is necessary to take measures to prevent cleaning oil from adhering to the strip 12. As a countermeasure for this, the third
As shown in section 1, pinch roll 1, brush roll 2. All the upper and lower rolls of the ringer roll 3 are raised and lowered by a cylinder (not shown) to a distance M from the pass line.

Next, the oil adhering to the pinch roll 1 and ringer roll 3 can be easily removed with a scraper, etc.
The oil remaining on the brush roll 2 cannot be removed. Therefore, as a method to remove the oil adhering to the brush 4, hot air is blown out from the jetting hole 17 that had been spouting cleaning oil, and the brush roll 2 is rotated to effectively remove the oil using centrifugal force and hot air. By drying the brush 4, the cleaning oil brush 4
This makes it possible to prevent oil from adhering to unoiled materials due to dripping from the surface. To switch between cleaning oil and hot air, close the on-off valve 15a and close the on-off valve 15b as shown in FIG.
This is done by switching the supply system to the fluid supply pipe 11 by opening the air supply pipe 11, heating the air forced from the fan 13 with the heater 14, and directing the obtained hot air to the jet hole 17 of the roll shaft 2' through the above-mentioned route. It blows out and adheres to the brush 4.
The washed oil is dried while also using centrifugal force due to the rotation of the roll shaft 2'.

Note that drying the brush roll 4 can normally be done using only the upper roll, but it is better to dry the brush roll 4 at the same time with the lower roll, in order to more reliably prevent contamination of the cleaning oil, considering contact caused by temporary sagging when the strip 12 is passed through. Become something.

<Effects of the Invention> As explained above, according to the present invention, it is possible to reliably switch from wet processing to dry processing without contaminating the strip with processing liquid. Furthermore, since the structure is simple, it is advantageous in terms of equipment space and cost, and the same cleaning effect can be obtained with about 1/2 the amount of cleaning liquid compared to the spray nozzle type.

[Brief explanation of drawings]

FIG. 1 is a side cross-sectional view showing a brush roll according to an embodiment of the present invention, FIG. 2 is a schematic explanatory diagram showing the arrangement of the brush roll during wet processing of the present invention, and FIG. 3 is a dry processing of the present invention. FIG. 4 is a perspective view showing a brush roll according to a conventional example, and FIG. 5 is a side view showing a brush roll according to another conventional example. DESCRIPTION OF SYMBOLS 1... Pin-roll, 2'... Roll axis, 4... Plan, 6... Neta dyeing tank, 8... Filter, 10... Oil pump, 12... Strip , 14... Heater, I6... Rotating joint, 18... Bearing, 20... ■ Belt. 2... Brush roll, 3... Ringer roll, 5... Housing, 7... 7η dyeing pump, 9... Return tank, 11... Fluid supply pipe, 13... Fan, 15 ...Switching valve, 17...Blowout hole, 19...■Pulley,

Claims (1)

[Claims] The roll shaft has a hollow structure, a brush is planted in the peripheral wall of the roll shaft, and an ejection hole facing the brush is provided, and a processing liquid for metal strip and a brush drying gas are supplied to the roll shaft of the hollow structure. A switchable fluid supply pipe is connected, and the hollow roll shaft is installed so as to be able to rise and fall on the line, so that it can be used for either wet processing or dry processing of metal strips. Brush roll equipment for continuous processing lines for metal strips.