KR20010065257A - Filter device which can exclude easily iron and sludge in grinding oil - Google Patents

Abstract

PURPOSE: A filter is provided to prevent a clog of the filter though a filter of high mesh is used and to regenerate clean grinding oil by filtering fine iron contents though a filter of low mesh is used. CONSTITUTION: A motor(9) of an oil pump(10) is repeatedly operated and stopped according to a level of a clean tank(7). In supplying dirty grinding oil into a dirty tank(5) through a return line(4), the dirty grinding oil is injected to a stone roll(15) of a first filter portion through a supply line(11) and an injecting nozzle(12). Iron contents inside the dirty grinding oil are moved in the opposite side to the injecting nozzle(12). The rest dirty grinding oil is fallen to an upper tank(22). The iron contents are inserted into an intermediate box(19) through an inlet(18) and transferred to a collecting box(20) through a screw(21) after removing through a wiper(17). A sludge of the dirty grinding oil in the upper tank(22) is filtered by a primary filter(30) of a second filter portion and inserted into a lower tank(23) through a grinding oil inlet(33). The primary filter(30) is moved with the sludge into a collecting box(29) by an upper and a lower pinch rolls(27,28). The sludge of the dirty grinding oil in the lower tank(23) is secondarily filtered by a secondary filter(42) of a third filter portion and inserted in a filter support palette(45). The secondary filter(42) is transferred with the sludge into a waste filter collecting box(29) by pinch rolls(40,41). The grinding oil in the filter support palette(45) is fed to a clean tank(7) through a grinding oil inlet(43). The grinding oil in the clean tank(7) is supplied to a grinding oil supply nozzle(1) through a return line(6) by an oil pump(48).

Description

FILTER DEVICE WHICH CAN EXCLUDE EASILY IRON AND SLUDGE IN GRINDING OIL}

The present invention relates to a filtration device which is easy to remove iron and sludge in abrasive oil, and more particularly, to clean grinding by removing fine iron powder and various sludges from dirty abrasive oil generated when grinding rolling rolls used in steel manufacturing process. The present invention relates to a filtration apparatus that is easy to remove iron and sludge in abrasive oil for regenerating a flow path.

In general, stainless steel cold rolling rolls are polished by spraying abrasive oil to maintain excellent gloss of the grinding surface. The abrasive oil includes fine iron powder and various sludges (SLUDGE), and thus, the abrasive oil filter device is used. It is filtered and reused.

In the conventional filtration apparatus, the low stone of the roll grinding machine moves and grinds along the entire width of the surface of the rolling roll. In order to facilitate grinding, abrasive oil is injected into the polishing site through the abrasive oil nozzle.

At this time, the abrasive oil along with the ground roll grinding sludge and fine iron powder is moved to the abrasive oil tank through the return line, and the operation of the oil pump causes the abrasive oil of the abrasive oil tank to be fed into the fine oil and The sludge is filtered and then injected.

However, in the conventional abrasive filtration device, when the mesh size of the filter is large, that is, when the MESH filter is used, the fine iron particles are not filtered out of the filter, so the fine iron particles are injected into the abrasive nozzle. In the rolling roll, in particular, the stainless work roll processing has a problem that a fine scratch occurs on the surface.

In addition, when the mesh size of the filter is small, that is, when the filter of the high mesh is used, the filter is frequently clogged, and excessive work preparation time is consumed, resulting in a decrease in the productivity of the cold rolling line due to polishing roll polishing.

Therefore, the present invention has been proposed in order to solve the above problems, the object of the present invention is to eliminate the maintenance time due to clogging the filter even if you use a high mesh filter, even by using a fine mesh filter to filter fine iron powder The present invention provides a filtration device that is easy to remove iron and sludge in the abrasive oil, which enables a large amount of dirty oil to be recycled into a clean abrasive oil capable of processing a rolling roll.

1 is a partial cutaway perspective view showing a filtration device that is easy to remove iron and sludge in the abrasive oil according to the present invention.

Figure 2 is a schematic side view showing the operating state of the filtering device is easy to remove iron and sludge in the abrasive oil according to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In order to achieve the above object, the present invention includes a dirty tank for supplying a dirty abrasive oil generated after polishing a polishing target roll with low stones while injecting the polishing oil on the polishing target roll from the polishing oil supply nozzle through a liter line;

A first filter part for removing iron contained in the dirty abrasive oil supplied to the dirty tank, and a second and third filter part for removing various sludge included in the dirty abrasive oil;

Clean iron for storing the clean abrasive oil and supplying it to the abrasive supply nozzle through the return line when iron and various sludges contained in the abrasive oil are removed by the first, second, and third filter units to become clean abrasive oil. do.

1 is a partial cutaway perspective view showing a filtration device for removing iron and sludge in the abrasive oil according to the present invention, Figure 2 is a view showing the operating state of the filtration device for easy removal of iron and sludge in the abrasive oil according to the present invention. A schematic side view.

In the filtration device for easily removing iron and sludge in the abrasive oil according to the present invention, the abrasive roll 2 is polished with the low stone 3 while spraying abrasive oil on the abrasive roll 2 from the abrasive oil supply nozzle 1. Dirty tank (DIRTY TANK) (5) for receiving the dirty (DIRTY) abrasive oil generated after the return line (4);

A first filter part for removing iron contained in the dirty abrasive oil supplied to the dirty tank 5, and second and third filter parts for first and second removal of various sludges contained in the dirty abrasive oil;

When iron and various sludges included in the polishing oil are removed by the first, second, and third filter units, the clean oil is stored and supplied to the polishing oil through the return line 6. It consists of a clean tank (7) for supplying to the nozzle (1).

The first filter part is configured in the dirty tank 5 and sprays the dirty abrasive oil supplied through the supply line 11 by the oil pump 10 when the motor 8 and the reducer 9 operate. An injection nozzle 12 for performing;

It is installed at a predetermined interval from the injection nozzle 12, the low stone roll is rotated while decelerating at a constant speed by the reducer 14 when the motor 13 is driven, and dirty abrasive oil is injected from the injection nozzle 12 ( 15);

It is installed on the top of the low stone roll 15, and only the iron powder of the dirty abrasive oil injected while pressing down the low stone roll 15 is sprinkled on the low stone roll 15 and the remaining components of the low stone roll 15 A pinch roll 16 for dropping the front lower portion;

The wiper is installed at the lower portion of the low stone roll 16, the wiper for wiping off the iron sprayed on the low stone roll 15 when the low stone roll 15 is pressed down by the pinch roll 16 and then rotated at an angle. 17);

An intermediate box 19 installed at the lower portion of the wiper 17 and configured to introduce iron powder removed by the wiper 17 through the inlet 18;

It is installed in the intermediate box 19, and includes a screw 21 for transferring the iron powder injected into the intermediate box 19 to the collection box 20 installed in the lower portion of the intermediate box 19.

The second filter unit is installed in the lower portion of the low stone roll 15, the upper tank 22 for dropping the dirty abrasive oil sprayed on the low stone roll;

The upper and lower pinch rolls 27 and 28 that are coupled to the grooves 24 of the spool 23 installed in the upper tank 22 and rotate in opposite directions when the motor 25 and the reducer 26 are driven. Rolled first primary filter 30 for filtering the sludge contained in the abrasive oil falling into the waste filter collection box 29, the pressure drop between the first tank 22 to the first;

The lower side of the upper tank 22 is installed at regular intervals between the spool 23 and the upper and lower pinch rolls 27 and 28, and a plurality of primary filters 30 to pass down. Idle rolls 31 and 32;

It is formed in the lower end of the upper tank 22 and includes an abrasive oil inlet 33 for injecting the abrasive oil filtered by the primary filter 30 to the lower portion of the upper tank 22.

The third filter unit is installed in the lower portion of the upper tank 22, the lower tank 34 for the abrasive oil is introduced through the abrasive oil inlet 33;

The image is coupled to the groove 36 of the spool 35 installed in the lower tank 34 and rotated in opposite directions when the motor 38 and the reducer 39 are driven after passing through the idle roll 37. , Second pin filter secondary filter for collecting the sludge contained in the abrasive oil flowing into the lower filter tank (2) while being pressed down between the lower pinch rolls (40) (41) (2) ( 42);

It is formed to be inclined at a predetermined angle on the lower portion of the secondary filter 42, and includes an abrasive oil inlet 43 for transferring the abrasive oil filtered by the secondary filter 42 to the clean tank (7). do.

A filter receiver having a plurality of holes 44 formed at a lower portion of the secondary filter 42 to support the secondary filter 42 and allow the abrasive oil filtered by the secondary filter to pass downward. Fret 45 is installed.

In addition, the inside of the clean tank 7 is rotated at a constant speed by the motor 46 and the reducer 47, and the clean abrasive oil stored in the clean tank 7 is transferred through the return line 6. An oil pump 48 for supplying the supply nozzle 1 is installed.

The clean tank 7 is provided with a level gauge 49 for measuring the level of the clean abrasive oil stored therein and controlling the operation of the oil pump 48 according to the measured level.

In addition, the screw 21 is connected to the motor 50 and the reducer 51 for driving the same.

Accordingly, looking at the action of the filter device for easy removal of iron and sludge in the abrasive oil of the present invention.

First, when grinding the roll to be polished by the low stone, the controller 52 is controlled to simultaneously drive the respective motors 8, 13, 26, 38, 46, and 50. The motor 8 is operated according to the level of the clean tank 7 which the level gauge 49 measures, or it stops repeatedly.

That is, the level gauge 49 stops the operation of the apparatus of the present invention at the same time as the alarm when the level of the clean tank (7) is very low water level (LL), the level is between the low water level (L) and high water level (H) If the level is low level (L) or high level (H), the motor 8 is stopped. When the level is extremely high level (HH), the alarm Stop operation.

When the dirty abrasive oil generated during the polishing operation of the bottom stone 3 is supplied to the dirty tank 5 through the liter line 4, the motor 8 of the dirty tank 5 operates to supply the dirty abrasive oil. Through the supply line 11 and the injection nozzle 12 is injected to the low stone roll 15 of the first filter portion to rotate.

When the dirty abrasive oil is injected into the low stone roll 15, the iron contained in the dirty abrasive oil is moved to the opposite side of the injection nozzle 12 by the pressure reduction of the pinch roll 16, while the remaining dirty abrasive oil is transferred to the upper tank ( To 22).

At this time, the iron moved to the opposite side of the injection nozzle 12 is removed by the wiper 17 and then introduced into the intermediate box 19 through the inlet 18, the collection box 20 by the screw 21 Is transferred to).

In addition, the dirty abrasive oil dropped into the upper tank 22 is the idle filter 31, 32 while the primary filter 30 wound on the spool 23 is laid on the bottom of the upper tank 22. When the sludge is first filtered by the first filter 30 of the second filter part, the sludge is first introduced into the lower tank 34 through the abrasive oil inlet 33, and the first filter ( 30 is driven by the upper and lower pinch rolls 27 and 28 rotated by the motor 25 and moved to the waste filter collection box 29 together with the sludge caught in the primary filter 30.

When the dirty abrasive oil introduced into the lower tank 34 passes through the idle roll 37 and is driven by the pinch rolls 40 and 41 that are rotated by the motor 38, the second filter portion is moved. The sludge is secondarily filtered by the filter 42 and then introduced into the filter receiving frit 45, and the second filter 42 is pinched by the pinch rolls 40 and 41 to the second filter 42. The sludge is moved to the waste filter collection box 29 together with the sludge.

In addition, the abrasive oil introduced into the filter receiving frit 45 is passed to the clean tank 7 through the abrasive oil inlet 43 after passing through the hole 44, and is transferred to the clean tank 7. The clean abrasive oil is supplied to the abrasive oil supply nozzle 1 through the return line 6 by the oil pump 48 operated by the motor 46.

As such, the present invention does not require maintenance time due to clogging of the filter even when using a filter of high mesh. Even when using a filter of low mesh, the polishing oil that is dirty when the fine iron is filtered and polished is used as a clean abrasive. Since a large amount can be reproduced, the productivity of a cold rolling line is improved, and it is possible to prevent the generation of fine defects on the surface of the rolling roll in advance.

Claims (3)

A dirty tank for supplying the dirty abrasive oil generated after grinding the abrasive object with low stones while injecting the abrasive oil from the abrasive oil supply nozzle onto the polishing object roll through a liter line; A first filter part for removing iron contained in the dirty abrasive oil supplied to the dirty tank, and a second and third filter part for removing various sludge included in the dirty abrasive oil; The clean tank for storing the clean abrasive oil and supplying it to the abrasive supply nozzle through the return line when iron and various sludges included in the abrasive oil are removed by the first, second, and third filter units to become clean abrasive oil. Easily remove the iron and sludge in the polishing oil comprising a filtration device. According to claim 1, wherein the first filter unit is configured in the dirty tank, the injection nozzle for injecting the dirty abrasive oil supplied through the supply line by the oil pump during operation of the motor; A low stone roll which is installed at a predetermined distance from the spray nozzle, is rotated when the motor is driven, and dirty abrasive oil is injected from the spray nozzle; A pinch roll installed at an upper portion of the low stone roll and allowing only iron in the dirty abrasive oil sprayed while pressing the low stone roll to be sprinkled on the low stone roll, and the remaining components drop down to the front lower portion of the low stone roll; A wiper installed at a lower portion of the low stone roll and wiping off the iron sprayed on the low stone roll when the low stone roll is pressed by the pinch roll and rotated at a predetermined angle; An intermediate box installed at a lower portion of the wiper and configured to input iron removed by the wiper through an inlet; Filtration device that is easy to remove the iron and sludge in the abrasive oil, which is installed in the intermediate box, comprising a screw for transferring the iron injected into the intermediate box to the collection box installed in the lower portion of the intermediate box. According to claim 1 or 2, wherein the second filter unit is installed in the lower portion of the low stone roll and the upper tank for the abrasive oil injected to the low stone roll to fall; It is coupled to the groove of the spool installed in the upper tank and is pushed down between the upper and lower pinch rolls that rotate after passing the idle roll when the motor is driven and collected by the waste filter collection box and included in the abrasive oil falling into the upper tank. A first filter for filtering the sludge firstly; An abrasive oil inlet formed at a lower end of the upper tank and input to the lower portion of the upper tank while collecting the abrasive oil filtered by the first filter; The third filter unit is provided in the lower portion of the upper tank, the lower tank for the abrasive oil is introduced through the abrasive oil inlet; Sludge is included in the waste filter collection box that is coupled to the spool installed in the lower tank and passed through the idle roll and then pressed down between the upper and lower pinch rolls that rotate when the motor is driven. A second roll-shaped second filter for filtering the second filter; A filter device for easily removing iron and sludge in abrasive oil, which is formed to be inclined under the secondary filter and includes an abrasive oil inlet for transferring the abrasive oil filtered by the secondary filter to a clean tank.