KR20030044692A - Device for cleaning roll in pickling apparatus - Google Patents

Abstract

PURPOSE: A roll cleaning device used in pickling equipment is provided to prevent an accident of a worker and to clean a squeeze roll while removing chips of the squeeze roll in a short time period without extra labor force. CONSTITUTION: A roll cleaning device includes a pair of supporting blocks(23) for supporting a squeeze roll at both sides of the squeeze roll, which is installed in a route of a strip. A screw(44) is installed by transversely crossing over the supporting blocks(23). The screw(44) is rotated by means of a moving motor(42). A moving block(45) is screw-coupled with the screw(44) in such a manner that the moving block(45) is reciprocated when the moving motor(42) is driven. A cleaning section(50) is connected to the moving block(45) so as to remove impurities and chips attached to an outer surface of the squeeze roll.

Description

Device for cleaning roll in pickling apparatus

The present invention relates to a stainless pickling line equipment, and more particularly, to an apparatus for cleaning the surface of a squeeze roll installed in the pickling equipment.

In general, the stainless manufacturing process is the process of annealing the strip hot-rolled cast, followed by cold rolling and annealing again to obtain a stainless with the desired gloss.

Here, the annealing pickling line is a continuous annealing line which is supplied with a cold rolled material coil and passes through a salt bath to facilitate descaling on the surface of the strip after annealing in an annealing furnace by direct heating. Will pass.

The pickling line where pickling is carried out is composed of a sulfuric acid tank, a nitric acid electrolytic tank, and a mixed acid tank as an immersion tank, and is a facility necessary to achieve surface gloss with surface cleaning and strip removal equipment of strips.

Figure 4 schematically shows a pickling facility installed in a conventional pickling line from the side.

In this plant, the strip (S) is immersed in the mixed acid tank (1) and passed through a squeeze roll (2), whereby contamination of the surface of the squeeze roll (2) or chips are applied to the squeeze roll (2). When attached to the surface of the strip (S) passing through the squeeze roll (2) stains and foreign matters indentation defects, etc. are generated, it is impossible to continue working.

Therefore, in order to remove the surface contamination of the squeeze roll, which is the cause of the flaw, the pickling line is stopped, the cover 3 is opened, the mixed acid of the mixed acid tank 1 is drained, and the squeeze roll cleaning and chip removal are performed manually. Will proceed.

However, since the pickling line must be stopped for a long time to provide a safe working environment for each worker when a flaw is generated in the strip, the lines placed before and after the pickling line must be stopped together for a long time, resulting in a problem of reduced productivity. .

The chemical mixed acid filled in the mixed bed is a strong acid mixed with nitric acid and hydrofluoric acid, and sludge is accumulated at the bottom of the tank even if the mixed acid inside the mixed acid tank is drained for cleaning and chip removal of the squeeze roll. Since a large amount of strong acid fume is generated and a bad smell is generated, there is always a risk that a safety accident may occur during the manual work of the worker.

The present invention has been made to solve the problems of the prior art, the object of which is to clean the squeeze roll and chip removal in a short time without the operator directly input, it is possible to prevent the operator's safety accident To provide a roll cleaning device for pickling equipment.

1 is a side view schematically showing a pickling plant equipped with a roll cleaning apparatus according to the present invention;

Figure 2 is a perspective view showing a part of the pickling plant equipped with a roll cleaning apparatus according to the present invention.

Figure 3 is a perspective view of a roll cleaning apparatus according to the present invention.

Figure 4 is a side view schematically showing a conventional pickling facility.

Explanation of symbols on the main parts of the drawings

10: mixed acid tank 13: squeeze roll

20: support 23: support block

24: drip container 30: rotary motor

40: positioning unit 42: moving motor

43: lifting cylinder 44: screw

45: moving block 50: cleaning unit

53: Wiper 56: Scraper

60: injection part 61: injection nozzle

62: connecting pipe 64: steam line

65: water supply line 66: thermocouple

67: control panel 70: chip removal blade

In order to achieve the above object, the cleaning apparatus of the present invention includes: a support block for supporting a squeeze roll installed at a path through which a strip passes in a mixed acid tank; A screw installed across the support block and rotatable by a moving motor; A moving block which is screwed to the screw and reciprocates by rotation of the moving motor; And a cleaning unit connected to the moving block and removing the contaminants and chips on the outer surface of the squeeze roll by using a scraper and a chip removing blade which are in close contact with the outer surface of the squeeze roll.

Hereinafter, a preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings. 1 is a side view schematically showing a pickling facility equipped with a roll cleaning device according to the present invention, and FIG. 2 is a perspective view showing a part of a pickling facility equipped with a roll cleaning device according to the present invention.

Looking at the configuration of the pickling equipment prior to explaining the present invention, the front and rear sides of the mixed acid tank 10 loaded with refractory therein is provided with the entrance (11) (12) and the strip (S) is the entrance (11) (12) It can pass through the mixed acid tank 10, each entrance 11, 12 is provided with a plurality of squeeze roll 13 in close contact with the upper surface of the strip (S), these rolls are rotated by a motor The strip is then transported.

The mixed acid tank 10 is filled with mixed acid (mixed acid of nitric acid and hydrofluoric acid), and the mixed acid storage tank 14 for storing the mixed acid is provided at the side of the mixed acid tank 10 with the overflow pipe 15 and the supply pipe ( Communication through 16). In addition, a supply pump 17 may be installed in the supply pipe 16 to supply mixed acid from the mixed acid storage tank 14 to the mixed acid tank 10.

A discharge port 18 is installed below the mixed acid tank 10 to drain the mixed acid.

The roll cleaning apparatus of the present invention installed in such a pickling facility includes a support unit 20 for supporting both sides of the squeeze roll, a cleaning unit 50 for cleaning the outer surface of the squeeze roll, and dusting off the contaminated substances. And a sander 60 and a positioning unit 40 for moving the cleaning unit 50 in position.

Here, the support 20 is a fixed frame 21 is erected on both sides of the front of the mixed acid tank 10, the support block 22 is installed on the inside of the fixed frame 21 to be moved up and down, the support block 23 The drip tray 24 is installed across the.

A plurality of air nozzles 25 are installed in the water collecting container 24 while being in communication with the air supply pipe 26, and an air control valve 27 for controlling the air supply amount is installed at one side of the air supply pipe 26. Left and right sides of the foreign matter receiving container 24 is provided with left and right detection sensors 28, 29 for limiting the movement of the moving block to be described later.

The squeeze roll 13 is rotatably installed by the rotary motor 30 while being supported by the support block 23 at the rear side of the support block 23.

The positioning unit 40 is installed at the front side of the support block 23, the positioning unit 40 includes a reducer 41 and a moving motor 42 installed outside the one support block 23. An elevating cylinder (43) installed in the mixed acid tank (10), which is the lower side of the moving motor (42), for elevating and lowering the supporting block (23), and rotated by the moving motor (42). Screw 44 is installed across the guide, the moving block 45 is threaded and screw 44 and the guide bar 46 is installed between the support block 23 to guide it when the moving block 45 is moved. ).

The cleaning unit 50 installs a plurality of cylinders 51 and 52 on the upper surface of the moving block 45 to remove the contaminants and the chips. The first cylinder 51 of the plurality of cylinders is installed to remove contaminants, and the second cylinder 52 is a cylinder installed for chip removal.

The surface cleaning means for removing contaminants includes a wiper 53 fixed to the rod end of the first cylinder 51, and a guide rod 54 for guiding forward and backward advancement of the wiper 53.

Here, the sensors 51a and 51b are installed at the front and rear sides of the body of the first cylinder 51 to limit the moving range of the wiper 53.

The wiper 53 is vertically mounted with a holder 55 at the end of the rod of the first cylinder 51, and a rubber scraper 56 is installed at the holder 55.

The front side of the scraper 56 is formed to have a curvature corresponding to the surface curvature of the squeeze roll 13 to be in close contact with the outer surface of the squeeze roll 13 when the scraper 56 is advanced.

When the foreign matter adhering to the surface of the squeeze roll 13 is removed by the surface cleaning means, the injection unit 60 is provided to reliably shake off the foreign matter.

The injection unit 60 includes an injection nozzle 61 positioned between two scrapers 56, a heat exchange tank 63 connected to the injection nozzle 61 and a connecting pipe 62, and an inside of the heat exchange tank 63. It includes a steam line 64 to pass through and a water supply line 65 in communication with the heat exchange tank (63).

Here, in order to maintain a constant temperature of the water passing through the connecting pipe 62, the steam supply valve 64a and the water supply valve 65a are respectively installed in the steam line 64 and the water supply line 65, and the connection pipe A thermocouple 66 is installed at the 62, and the steam supply valve 64, the water supply valve 65, and the thermocouple 66 are connected to the prepared control panel 67 to connect the connection pipe 62. The supply of steam and water is controlled according to the temperature of the water discharged through the water.

Timer 68 is connected to the control panel 67 to enable the time control operation of the surface cleaning means and the chip removing means described later.

The chip removing means 69 is installed on the upper surface of the moving block 45 together with the surface cleaning means, and the chip removing blade 70 fixed to the rod end of the second cylinder 52 and before and after the chip removing blade 70. It includes a guide rod 71 for guiding the truth.

Like the first cylinder 51, the second cylinder 52 also has sensors 52a and 52b installed at the front and rear sides to limit the moving range of the chip removing blade 70.

The chip removal blade 70 used here is made of steel to scrape off the chips stuck to the squeeze roll 13, and for this purpose, the front side of the chip removal blade 70 corresponds to the outer circumferential curvature of the squeeze roll 13. It is formed to be curvature.

The roll cleaning apparatus according to the present invention configured as described above has the following effects.

If contamination occurs on the squeeze roll 13 during the movement of the strip S, the operator causes the surface cleaning means to operate in the control panel 67.

Then, the lifting cylinder 43 of the positioning unit 40 is operated to raise the support block 23. The roll located on the upper side of the pair of squeeze rolls 13 rises upward and is separated from the upper surface of the strip.

In this state, the first cylinder 51 operates to advance the rod. When a sensor located at the front side of the first cylinder 51 senses the advancement of the rod, this signal is input to the control panel 67, and the control panel 67 is provided with a water supply valve 65 and a steam supply valve 65. To be open.

At this time, in order to maintain a constant temperature of the water sprayed during the cleaning operation, the thermocouple 66 is operated to enter the temperature of the steam flowing into the heat exchange tank 63, and the temperature of the water passing through the connection pipe 62 after heat exchange with the steam. Is compared and the comparison signal is sent to the control panel 67.

Then, the control panel 67 controls the steam supply valve 64a and the water supply valve 65a to adjust the amount of steam supplied and the amount of water to adjust the temperature of the water passing through the connection pipe 62.

Water passing through the connecting pipe 62 is injected through the injection nozzle (61). At the same time, while the scraper 56 is in close contact with the squeeze roll 13, the moving motor 42 operates to move from one side to the other side of the squeeze roll 13 to scrape off the contaminants on the squeeze roll 13. The contaminants that are scraped off are shaken off by the water sprayed by the spray nozzle 61.

The contaminated pollutants fall into the foreign matter container 24, and the contained pollutants are suctioned by the air passing through the air supply pipe 26 and discharged to the outside.

In this operation, the surface cleaning means moves while cleaning the left and right sides of the squeeze roll 13 by a predetermined time in the timer.

After the cleaning is completed, the first cylinder 51 operates again to move the rod forward until the rear sensor 51b detects and then operates the moving motor 42 to return the surface cleaning means to its original position.

On the other hand, even when a chip is generated on the surface of the squeeze roll 13, the operator operates the control panel 67 to be turned on to operate the second cylinder 52 of the chip removing means 69.

Then, the rod of the second cylinder 52 is advanced, the chip removing blade 70 is in close contact with the squeeze roll 13, and the sensor 52a located at the front side of the second cylinder 52 detects the advance of the rod. do.

In the control panel 67, the timer 68 starts to operate, and the chip removing means 69 operates for the time set in the timer 68 to reciprocate within the inner range in which the left and right sensors 28 and 29 are installed. Done. This will be described in detail as follows.

When the chip removing blade 70 is in close contact with the squeeze roll 13, the moving motor 42 operates to move the moving block 45 from one side to the other side, and the chip removing blade 70 is squeeze roll ( The outer surface of 13) is scratched and moved, and the chip stuck to the squeeze roll 13 is removed.

At this time, the removed chips are dropped into the drop container 45 and the received chips are sucked into the air supply pipe 26 by the air and then discharged to the outside.

When the timer 68 expires, the moving block 45 returns to its original position, and the rod of the second cylinder 52, which has been advanced, also reverses, and the chip removing blade 70 is disposed on the outer surface of the squeeze roll 13. Or the scraper 56 is spaced apart.

Then, when the lifting cylinder 43 operates to lower the upper squeeze roll 13, the upper and lower squeeze rolls are in close contact with the upper and lower surfaces of the strip S, and the strip S is a motor for rotating the squeeze roll 13. Advance by 30.

As described above, according to the present invention, when a flaw occurs on the surface of the strip due to chips or contaminants stuck to the squeeze roll, the pickling line is stopped immediately and the surface is cleaned without draining the mixed acid filled in the mixing tank. It is possible to remove chips and contaminants in the squeeze roll using the means and the chip removal unit.

Therefore, it is possible to reduce the time for draining the mixed acid, and the product productivity is greatly improved.

In addition, the operator does not have to directly access the mixed acid tank to prevent the worker's safety accidents.

Claims (4)

A support block for supporting a squeeze roll installed at a path through which the strip passes in the mixed acid tank on both sides; A screw installed across the support block and rotatable by a moving motor; A moving block which is screwed to the screw and reciprocates by rotation of the moving motor; And Roll cleaning of the pickling facility including a cleaning unit for removing the contaminants and chips on the outer surface of the squeeze roll using a scraper and a chip removal blade connected to the moving block and in close contact with the outer surface of the squeeze roll Device. The method of claim 1, wherein in order to shake off the contaminant, A spray nozzle located between the scrapers, a heat exchange tank connected to the spray nozzles and a connecting pipe, a steam line that passes through the inside of the heat exchange tank and has a steam supply valve installed therein, and communicates with the heat exchange tank. Roll of pickling equipment including a water supply line for installing a water supply valve, a thermocouple installed in the connecting pipe, and a control panel connected to the steam supply valve, the water supply valve and the thermocouple simultaneously. Cleaning device. The air supply pipe of claim 1, wherein the air supply pipe is installed to communicate with the foreign matter collecting tube, the foreign matter collecting tube and the plurality of air nozzles installed across the support block, to discharge the removed pollutants and chips. Is installed on one side of the air control valve for adjusting the air supply amount, Roll cleaning apparatus of the pickling facility in which the removed contaminants and chips are discharged by suction of air passing through the air supply pipe. The method according to any one of claims 1 to 3, A moving motor installed outside the support block to adjust the position of the moving block, a lifting cylinder installed in a mixed acid tank that is lower than the moving motor to raise and lower the support block, and a movement of the moving block. Roll cleaning apparatus of a pickling facility comprising a guide bar installed between the support block to guide.