KR200342483Y1 - Apparatus for filtering alien materials in cleaning liquid - Google Patents

Abstract

The present invention relates to a device for discharging foreign matter contained in a washing liquid, such as a circulating alkaline liquid, having an inlet 12 through which the washing liquid is introduced, an outlet 13 through which the washing liquid is discharged, and a foreign substance outlet 14 through which the foreign matter is discharged. A main body portion 10 having an opening and closing cylinder 16 for opening and closing the body 11 and the cover 15 for opening and closing the upper portion thereof; A plurality of rotary shafts 21 are rotatably mounted in the body 11, and a strainer 23 is mounted, and a link 24 mounted at one end of each of the rotary shafts 21 is assembled to swing at a lower end thereof. It is assembled with a horizontal bar 26 connected to the lever 25, the upper end of the lever 25 is connected to the swing cylinder 27 to swing the strainer 23, the front of each strainer 23 An operation unit 20 in which a plurality of spray headers 28 for spraying water into the waterline 29 are assembled; And first, second, third and fourth control valves 31, 32, 33, 34 for controlling the flow of the cleaning liquid and the filtered foreign matter, and a fifth for controlling the water spray of the spray header 28. A level switch for detecting the level of the washing liquid flowing into the body 11 includes a control valve 35, a plurality of solenoid valves that operate the opening / closing cylinders 16 and the swing cylinders 27 as electrical signals. And a control unit 30 having a 39).

Description

A foreign substance discharge device of circulating washing liquid {APPARATUS FOR FILTERING ALIEN MATERIALS IN CLEANING LIQUID}

The present invention relates to a device for discharging foreign matter contained in a cleaning liquid, such as a circulating alkaline liquid, and more particularly, in a continuous annealing line, a foreign material contained in the cleaning liquid is discharged from a facility for cleaning a steel plate with a brush roll and a cleaning liquid. The present invention relates to an apparatus for discharging a foreign substance of a circulating washing liquid, which prevents clogging, maintains spray property of the cleaning liquid sprayed onto the steel sheet, and extends the service life of the cleaning liquid and reduces the burden on the driver.

In general, steel sheets produced in cold rolling mills of steel mills have rolling oil and dust on their surfaces. Therefore, foreign materials such as rolling oil or dust on the steel sheet should be physically removed as a separate cleaning device before the steel sheet is put into the annealing process. .

FIG. 1 is a schematic view showing a general steel plate washing apparatus, and as shown, a plurality of brush rolls 8 installed in the first and second scrubber tanks 2 and 3 have one direction. It rotates in the reverse direction with the steel sheet 9, which is rubbed with the surface of the steel sheet 9, and during this process, a cleaning liquid such as alkaline liquid is applied to the surface of the brush roll 8 and the steel sheet 9 through the nozzle 7 of the spray line. Sprayed.

That is, the pump is pumped by the pump 6a in the washing liquid tank 6 and supplied to the spray line 7a of the hot dip tank 4a and the first scrubber tank 2 to be used for washing the steel sheet, and drain The cycle of returning to the washing liquid tank 6 through the line 7b is repeated.

At this time, the washing liquid returned from the first scrubber tank (2) passes through the basket-type filtration device 50 installed in the middle of the drain line (7b) brush or brush of the brush roll (8) dropped during the steel sheet washing operation Large foreign objects are filtered out. As shown in FIG. 2, the conventional filtration device 50 has a cylindrical case 51 having an inlet 51a through which the cleaning liquid containing foreign matter enters and an outlet 51b through which the purified washing liquid exits, and an interior thereof. Strainer 52 is installed on the cover 51 and the case 51 is composed of a cover 53 covering the upper portion.

However, if the brush or foreign matter dropped from the brush roll 8 is filled in the filtering device 50 during the continuous annealing line operation, the driver directly covers the case 51 of the filtering device 50 made of a basket type. After disassembling the cover 53, take out the strainer 52 therein, clean the inside of the cover quickly, and then refit the cover 53, which is not only a heavy burden for the driver but also a cleaning work. Because of the high risk of physical injury due to the washing solution, it is difficult to practically manage the filtration device 50.

In addition, the washing liquid to be drained includes a large number of brushes of the brush roll 8, so that the removed brush fills the curved pipe portion of the circulation line or blocks the injection hole of the nozzle 7 of each spray line so that the brush roll 8 and the steel sheet are removed. (9) The cleaning solution was not properly sprayed on the surface, causing a vicious cycle that promotes brush dropping of the brush roll (8).

In addition, there is no device for removing the brushes in the pure water circulated from the pure water tank 5 in the drain line 7b of the second scrubber tank 3, which causes the problem that the spray nozzle 7 is often clogged by the brush as described above. It was.

Therefore, the present invention has been made in order to solve the above problems, the purpose of which is to remove the brush and foreign substances that are dropped during washing the steel sheet using the brush roll and the cleaning liquid from the drain line to the outside, clogging the circulation pipe line To prevent the phenomenon, to maintain the stability of the spray spray stability to extend the service life of the brush roll, to provide a foreign matter discharge device of the circulating cleaning liquid that can prevent the operator's work burden and safety accidents due to the cleaning liquid.

1 is a schematic view showing a general steel sheet washing equipment,

Figure 2 is an exploded perspective view showing a foreign substance discharge device according to the prior art,

Figure 3 (a) (b) (c) (d) is a plan view, a side view, a front view and a longitudinal sectional view showing a foreign substance discharge device of the circulating washing liquid according to the present invention,

Figure 4 is a perspective view showing a foreign substance discharge device of the circulating washing liquid according to the present invention,

Figure 5 (a) (b) (c) is a detailed view showing a strainer, a spray nozzle and a waterline respectively employed in the foreign matter discharge device of the circulating washing liquid according to the present invention,

6 is a schematic view of a control unit employed in the foreign substance discharge device of the circulating washing liquid according to the present invention,

Figure 7 is a state of use of the foreign substance discharge device of the circulating washing liquid according to the present invention.

* Explanation of symbols for the main parts of the drawings *

2,3 ......... 1st and 2nd scrubber tank 8 ............ Brush roll

11 ........... Body 12 .......... Entrance

13 .......... Exit 14 .......... Foreign body outlet

15 ......... Cover 16 .......... Open / close cylinder

21 ......... spinning axis 23 .......... strainers

24 ......... Link 25 .......... Lever

26 ......... Horizontal bar 27 .......... swing cylinder

28 ........ Spray header 39 ......... Level switch

The present invention as a technical configuration for achieving the above object,

In the equipment for washing the steel sheet proceeding in one direction as a brush roll and the cleaning liquid,

A main body having an opening and closing cylinder for opening and closing a cover for opening and closing the body having an inlet into which the washing liquid is introduced, an outlet to be discharged, and a foreign substance discharge port from which foreign substances are discharged;

A plurality of rotating shafts are rotatably installed in the body, and a strainer is mounted, and a link mounted at one end of each of the rotating shafts is assembled with a horizontal bar connected to a lever assembled so that a lower end thereof is swingable, and an upper end of the lever is mounted on the strainer. An operation unit connected to a swing cylinder to swing the swing, and assembled with a plurality of sprayers spraying water to the front of each strainer in a waterline; And

The first, second, third and fourth control valves for controlling the flow of the cleaning liquid and the filtered foreign matter, the fifth control valve for controlling the water injection of the spray header, and the opening and closing cylinder and the swing cylinder are operated by electric signals. And a control unit having a plurality of solenoid valves, the control unit having a level switch for detecting the level of the washing liquid flowing into the body.

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

The foreign matter discharge device 1 of the circulating washing liquid according to the present invention has a nozzle roll and a brush roll in contact with the surface of the steel sheet, as shown in FIGS. 8) installed in the middle of the drain line 7b to filter, filter, and discharge the brushes or foreign substances contained in the drained drainage liquid after washing the steel plate in the first and second scrubber tanks 2 and 3 having a plurality of As such, the apparatus 1 comprises a main body 10, an operation unit 20 and a control unit 30.

That is, the body portion 10 is shown in Figure 3 (a) (b) (c) (d) and 4, the body in the form of a box to accommodate a certain amount of the cleaning liquid drained after the cleaning operation without external leakage It is provided with (11), one side of the body 11 is provided with an inlet 12 through which the washing liquid flows in through the drain line 7b, and the other side is provided with an outlet 13 for discharging the filtered washing liquid. In addition, the other side is provided with a foreign body discharge port 14, etc. to discharge only the filtered foreign matter, respectively. At this time, the outlet 13 is substantially the same height as the inlet 12, it is disposed between the foreign material outlet 14 and the final strainer 23 to be described later, the foreign material outlet 14 is filtered and submerged foreign matter. The outlet 12 is installed at a position lower than the positions of the inlet 12 and the outlet 13 so as to smoothly discharge the outlet, and the outlet 13 is the lowest part of the body 11 with the bottom inclined toward the foreign substance outlet 14. It is preferable to be installed in the vicinity.

In addition, an opening and closing cylinder 16 for opening and closing the cover 15 that opens and closes the upper space of the body 11 is installed at one side at an upper end of the body 11 having an open upper bar. The upper hole 15a is connected via a crevice 16a mounted on the rod end of the opening / closing cylinder 16 and the pin member 17a, and the lower hole 15b of the cover 15 is connected to the body 11. It is connected via the bracket 18 and the pin member 17b integrally mounted on one side, the opening and closing cylinder 16 is fixed to the lower end of the plate 19 formed integrally on one side lower end of the body 11 do. As a result, the cover 15 pivots up and down to open and close the upper portion of the body 11 by using the pin member 17b of the lower end hole 15b as a rotating shaft during the vertical operation of the opening / closing cylinder 16. do.

And, as shown in Figure 3 (a) (b) (c) (d) to 5 (a) (b) (c), the operation portion 20, both ends of both sides of the body (11). A plurality of rotary shafts 21 are installed to be rotatable, and both ends connected to both side surfaces of the body 11 are provided with seal boxes 22 so as to prevent the outflow of the stored washing liquid, respectively, and to the rotary shaft 21. A pair of left and right fixtures (21a) to filter the brush and foreign matter in the cleaning liquid introduced through the inlet 12, and the filtering member (23a) with a plurality of small holes perforated so that only the cleaning liquid that is fluid can be drained to the outlet side and The center part of the strainer 23 which consists of the board member 23b which fixes the edge is provided. Here, the gland packing is fitted in the seal box 22 so that it is difficult to leak the washing liquid from the inside, and the cover is fixed by the bolt.

In addition, one end of each of the rotating shafts 21 exposed to the outside of one side of the body 11 is connected to the upper end of the link 24, the lower end of each link 24 is assembled to be swingable lever 25 The upper end of the lever 25 is assembled with the horizontal bar 26 assembled with the lower end is assembled so as to operate the hinge as the pin member (25a) is connected to the rod end of the swing cylinder (27). As a result, when the swing cylinder 27 is moved forward and backward, the rotating shaft connected to the upper end of the link 24 is pivoted while each link 24 connected to the lever 25 and the horizontal bar 24 is pivoted. By rotating the 21 in the forward and reverse directions, the plurality of strainers 23 arranged at regular intervals in the body 11 can be swinged at the same time.

In addition, the upper front of each strainer 23 is supplied with water from the waterline 29 so that the water can be sprayed to the front of the filtering member 23a to remove the brush and foreign matter on the filtering member 23a when filtering. A plurality of spray headers 28 having a plurality of nozzles 28a are provided in parallel with the strainer 23, and one end of each spray header 28 is provided for each part of the waterline 29 to supply water from the outside. Assembled with detachable volleyball.

On the other hand, the control unit 30 for controlling the foreign matter removal operation for the cleaning liquid is provided with a level switch 39 to detect the level of the cleaning liquid filled in the body 11, as shown in FIG. And 7, the first control valve 31 for controlling the inflow of the washing liquid through the inlet 12 and the scrubber tank 2 opened when the first control valve 31 is closed ( A second control valve 32 for controlling the discharge of the washing liquid drained from 3) to the drain line, a third control valve 33 filtered by the strainer and controlling the discharge of foreign matter collected at the bottom of the body 11; And a fourth control valve 34 for controlling the discharge of the filtered washing liquid and a fifth control valve 35 for controlling the water supply to the waterline 29, wherein the first, second, third, and fourth 5 Opening / closing operation of the control valves 31, 32, 33, 34, 35 and reciprocating movement of the opening / closing cylinder 16 and swing cylinder 27 A plurality of solenoid valves 31a, 32a, 33b, 34a, 35a, 38a, 38b for supplying a working fluid by an electric control signal are provided.

Here, the first, second, third, fourth and fifth control valves 31, 32, 33, 34, 35 and the opening and closing cylinder 17, the operating cylinder supplied for the operation of the swing cylinder 27 It is preferable to install a pressure regulating regulator 37 so as to smoothly control the compressed air supplied to control the operating air, and employ a speed control valve 37a to maintain a constant speed during operation. In the figure, reference numeral 37c is a silencer, and FIG. 37d is a filter for removing foreign matter in the working fluid supplied.

Referring to the operation and effects of the foreign substance discharge device of the circulating washing liquid according to the present invention having the configuration as described above are as follows.

7 is a working state diagram showing a foreign substance discharge device of the circulating washing liquid according to the present invention, as shown, the washing liquid drained after the steel plate washing operation in the first and second scrubber tank (2) (3) body ( 11) Filter by filtering the brush and foreign matter (hereinafter referred to as foreign matter) removed from the washing liquid by light oil into the inside.

First, the cleaning liquid such as the alkaline liquid stored in the alkali tank 6 is supplied to the spray lines of the hot dip tank 4a and the first and second scrubber tanks 2 and 3 by the pump 6a, and the nozzle 7 The washing liquid sprayed from) is used for the cleaning operation of the steel sheet 9 and then drained together with the brush removed from the brush roll 8, and the inlet of the body 11 via the first control valve 31 opened and operated. 12).

At this time, each strainer 23 disposed on each of the plurality of rotary shafts 21 provided at predetermined intervals in the body 11 is stopped in an upright position, and the plate member 23a at the lower end thereof is the body 11. In contact with the bottom surface of the filter, the brush contained in the introduced washing liquid is filtered through the foreign matter without being caught in the hole of the filtering member 23a, and the filtered washing liquid is passed through as it is. Subsequently, the alkaline liquid introduced into the body 11 and sequentially passed through the plurality of strainers 23 is filtered to allow reuse through the outlet 13 and the opened fourth control valve 34. It is supplied to (6).

When the circulation process of the drained washing solution is repeated as described above, foreign matters filtered by the strainers 23 gradually accumulate in the body 11, and thus the filtration flow of the washing solution introduced therein is worsened. While the discharge amount of the washing liquid is reduced, the inflow amount of the washing liquid through the inlet 12 is relatively increased in the body 11.

At this time, when the incoming washing liquid is above a predetermined level and is detected by the level switch 39 installed in the body 11, electric control of the solenoid valves 31a, 32a, 33a, 34a by the detection signal. By sending a signal, the first and fourth control valves 31 and 34 are closed and the second and third control valves 32 and 33 are open.

Here, the operation of each of the control valves 31, 32, 33, 34, 35 and the swing cylinder 27 proceeding after such an operation is performed by an electric time program. 4, the control valves 31 and 34 are closed to block the inflow of the cleaning liquid through the inlet 12 and the discharge of the cleaning liquid through the outlet 13, and to open the second control valve 32 in the closed state. To drain the cleaning liquid into the alkaline tank 6 to temporarily block the flow of the cleaning liquid into the body 11, and to open the third control valve 33 so that the foreign substance can be discharged through the foreign substance outlet 14. .

A few seconds after the above operation is performed, when another solenoid valve 38a receives an electrical signal and moves the swing cylinder 27 provided on one side of the body 11 forward, the lever 25 connected to the rod end is lowered. Since the pivot member 26 is pivoted forward with the pivot member 25a as the center of rotation, the horizontal bar 26 connected to the lower end of the lever 25 is advanced, and the rotary shaft 21 is connected to the upper end of the assembled link 24. ) Is rotated so that each of the strainers 23 assembled thereon is tilted at a predetermined angle (θ) 20 ° to one side in a vertical state, and the angle change of the strainer is inclined by the swing cylinder 27 of the lever 25. Same as the angle change. At this time, since a predetermined size interval is formed between the lower plate member 23b of each of the inclined strainers 23 and the bottom surface of the body 11, the foreign matter on the bottom surface is filtered through the foreign material discharge port 14. It is discharged to the foreign matter drain pit 41 via the open third control valve 33.

When the solenoid valve 35a receives the electrical signal and opens the fifth control valve 35 simultaneously with the forward operation of the swing cylinder 27, the plurality of strainers 23 are connected through the waterline 29. Since water is supplied to the spray header 28 disposed at the front, water is sprayed from the nozzles 28 provided at the spray header 28 at a constant spray angle α of 90 ° to filter each strainer 23. The foreign matter remaining in the member 23a is cleaned.

At this time, the fifth control valve 35 maintains an open state for about 20 seconds regardless of other operations, and continues to spray water, and then closes to stop water spray through the nozzle 28a of the spray header 28. In addition, the reciprocating operation of the swing cylinder 27 for moving the horizontal bar 26 forward and backward to repeatedly switch the strainer 23 from the upright state to the inclined state also opens and closes the five control valves 35. This is done for a time and stops when the rod end is reversed. In addition, the spray header 28 and the front surface of the filtration member 23a of the strainer 23 in the inner space of the body 11 so as not to interfere with the strainer 23 repeatedly switching the upright state and the inclined state. It is preferable to install in parallel.

Then, both the water spray of the spray header 28 and the reciprocating operation of the swing cylinder 27 are terminated, and at the same time, the solenoid valves 31a, 32a, 33a, and 34a transmit electrical signals according to the programmed time. The second and third control valves 32 and 33, which were received and opened, are closed and returned, while the first and fourth control valves 31 and 34, which are closed, are opened and returned to filter the cleaning liquid introduced to remove the foreign matter. All the operations of circulating and discharging the removed foreign matter are completed in one time cycle.

On the other hand, when repairing each strainer 23 or spray header 28 installed in the body 11, by sending an electrical signal to the solenoid valve 28b on one side, the rod end covers the upper part of the body 11 When the opening and closing cylinder 16 connected to the upper hole 15a of the cover 15 and the pin member 17a is contracted and operated, the cover 15 is attached to the bracket 18 and the pin member 17b of the body 11. Since the inside of the body 11 is completely exposed while being lowered upward by using the lower hole 15b connected to the rotating shaft, the internal components can be replaced or repaired. In addition, when the opening and closing cylinder 16 is expanded and returned, the cover 15 is flipped downward to seal the upper part of the cover 11 to continue removing foreign substances contained in the cleaning liquid.

According to the present invention as described above, it is equipped with a plurality of strainers 23 assembled to repeatedly switch the upright state and the inclined state in the body (11) filled with the washing liquid drained after the washing operation is removed with a reusable washing liquid Since the brushes and foreign substances can be separated and discharged, there is no need for direct cleaning by the operator, which eliminates the burden on the driver, effectively filters the circulating cleaning fluid, and prevents clogging of the circulation pipeline caused by foreign substances. It can perform stable and significantly improve work productivity. In addition, the spray efficiency of the cleaning liquid sprayed through the nozzle 28a of the spray header 28 during the steel sheet cleaning is also maintained normally, thereby obtaining the effect of extending the service life of the brush roll in contact with the steel sheet surface.

Claims (1)

In the facility for washing the steel sheet 9, which proceeds in one direction, as the brush roll 8 and the cleaning liquid, An opening / closing cylinder for opening / closing the body 11 having the inlet 12 into which the washing liquid is introduced, the outlet 13 from which the washing liquid is discharged, and the foreign matter discharge port 14 from which the foreign matter is discharged, and a cover 15 to open and close the upper portion thereof ( A main body portion 10 having 16; A plurality of rotary shafts 21 are rotatably mounted in the body 11, and a strainer 23 is mounted, and a link 24 mounted at one end of each of the rotary shafts 21 is assembled to swing at a lower end thereof. It is assembled with a horizontal bar 26 connected to the lever 25, the upper end of the lever 25 is connected to the swing cylinder 27 to swing the strainer 23, the front of each strainer 23 An operation unit 20 in which a plurality of spray headers 28 for spraying water into the waterline 29 are assembled; And First, second, third and fourth control valves 31, 32, 33, 34 for controlling the flow of the cleaning liquid and filtered foreign matter, and fifth control for controlling the water spray of the spray header 28. A plurality of solenoid valves 31a, 32a, 33a, 34a, 35a, 38a, 38b which operate the valve 35, the open / close cylinder 16 and the swing cylinder 27 by electric signals. And a control unit (30) having a level switch (39) for detecting the level of the washing liquid introduced into the body (11).