KR102175241B1 - Apparatus for filtering acid cleaning pickling sludge of sts work - Google Patents

Abstract

The present invention relates to a stainless steel pickling sludge filtering device, wherein the acid wastewater solution generated by the pickling process of stainless steel is introduced and the acid recovery tank is discharged after the sludge is filtered, and the acid recovery tank is fixed. A plurality of filter units that are spaced apart from each other to filter the sludge, and a plurality of sludge removal units that correspond to each of the plurality of filter units and remove the sludge filtered from the plurality of filter units using an air spray method. By including, it is possible to automatically remove the sludge after filtering the sludge in the acid recovery process after pickling of stainless steel.

Description

Stainless steel pickling sludge filtering device {APPARATUS FOR FILTERING ACID CLEANING PICKLING SLUDGE OF STS WORK}

The present invention relates to a stainless steel pickling sludge filtering device capable of automatically removing sludge after filtering the sludge in an acid recovery process after pickling of stainless steel.

As is well known, in the annealing line of the cold-rolled stainless steel coil, a pickling process is performed in which an acid solution is used to remove the scale generated during annealing.The pickling solution is a post-process, acid recovery process. The acid solution can be recovered after removing the sludge (for example, iron sludge, etc.).

The sludge generated by the pickling process must be removed. As shown in FIG. 1, when the acid solution wastewater flows in the direction of the arrow, it is filtered firstly through the first filter 21 in the first sludge tank 11 2 It moves to the sludge tank 12, is filtered secondarily through the second filter 22 from the second sludge tank 12, moves to the third sludge tank 13, and moves to the third sludge tank 13 One solution may be discharged to the acid recovery tank through a discharge means (eg, including a discharge pump 31, a suction line 32, a discharge line 33, etc.).

However, in the conventional sludge filtering device as described above, the first filter 21 and the second filter 22 have to be cleaned, replaced, etc. by hand. Due to this manual filter cleaning and replacement work There is a problem that the productivity of the recovery operation of the acid recovery solution decreases.

1. Korean Patent Registration No. 10-1379059 (registered on March 21, 2014) 2. Korean Patent Registration No. 10-0419784 (registered on Feb. 10, 2004)

The present invention is to provide a stainless steel pickling sludge filtering device capable of automatically removing sludge after filtering the sludge in an acid recovery process after pickling of stainless steel.

In addition, the present invention filters the sludge from the acid wastewater solution using a plurality of filter units provided at regular intervals in the acid recovery tank unit, and by removing the filtered sludge from each of the plurality of filter units by an air spray method, the pickling process It is intended to provide a stainless steel pickling sludge filtering device that can effectively remove the sludge generated from and improve the productivity of the recovery operation of the acid recovery solution.

In addition, the present invention is provided with a scattering prevention case at the rear of the upper filter positioned at the top for sludge filtering among a plurality of filter members, thereby preventing scattering of the sludge removed through air injection, as well as reducing the sludge to the bottom. To provide a stainless steel pickling sludge filtering device that can improve the collection efficiency by moving to.

The objects of the embodiments of the present invention are not limited to the above-mentioned objects, and other objects not mentioned will be clearly understood by those of ordinary skill in the technical field to which the present invention belongs from the following description. .

According to an embodiment of the present invention, an acid recovery tank portion through which the acid wastewater solution generated by the pickling process of stainless steel is introduced and the sludge is filtered, and then the acid recovery solution is discharged, and the acid recovery tank portion are provided at predetermined intervals. Stainless steel pickling including a plurality of filter units for filtering sludge, and a plurality of sludge removal units provided corresponding to each of the plurality of filter units and removing the sludge filtered by each of the plurality of filter units by air spraying A sludge filtering device may be provided.

In addition, according to an embodiment of the present invention, the acid recovery tank unit includes an inlet member through which the acid wastewater solution is introduced, and the acid wastewater solution introduced through the inlet member divided by the plurality of filter units. A stainless steel pickling sludge filtering device including an acid recovery tank member for filtering the sludge and a suction and discharge member for suctioning and discharging the acid recovery solution after the sludge filtering is performed may be provided.

In addition, according to an embodiment of the present invention, the plurality of filter units, a plurality of filter members each arranged in a cross shape, a rotating member for rotating the plurality of filter members, and rotated corresponding to each of the plurality of filter members A stainless steel pickling sludge filtering device including a plurality of sensing members for sensing a position may be provided.

In addition, according to an embodiment of the present invention, the plurality of sludge removal units are provided above the plurality of filter members, respectively, through an air injection nozzle provided to be elevating and descending, the upper part located above the plurality of filter members. A stainless steel pickling sludge filtering device including an air injection member for removing the sludge by spraying air to the filter, and a sludge collection member for discharging and collecting the sludge removed through the air injection member may be provided.

In addition, according to an embodiment of the present invention, the air injection member includes a fixing plate provided on an upper portion of the plurality of filter members, a support plate provided with the air injection nozzle, and the support plate provided on the fixing plate. A stainless steel pickling sludge filtering device including a first lifting cylinder for lifting and descending may be provided.

In addition, according to an embodiment of the present invention, the sludge collection member includes a scattering prevention case provided at the rear of the upper filter to prevent scattering of the sludge, and an agent provided on the fixed plate to elevate the scattering prevention case. 2 Stainless steel including an elevator cylinder, a transfer screw provided below the inside of the scattering prevention case to transfer the sludge in a collection direction, and a discharge line for discharging the sludge transferred in the collection direction to be collected in a collection tank A pickling sludge filtering device may be provided.

The present invention can provide a stainless steel pickling sludge filtering device capable of automatically removing the sludge after filtering the sludge in the acid recovery process after pickling of stainless steel.

In addition, the present invention filters the sludge from the acid wastewater solution using a plurality of filter units provided at regular intervals in the acid recovery tank unit, and by removing the filtered sludge from each of the plurality of filter units by an air spray method, the pickling process It is possible to effectively remove the sludge generated in the acid recovery solution, it is possible to improve the recovery work productivity.

In addition, the present invention is provided with a scattering prevention case at the rear of the upper filter positioned at the top for sludge filtering among a plurality of filter members, thereby preventing scattering of the sludge removed through air injection, as well as reducing the sludge to the bottom. It can be moved to to improve collection efficiency.

1 is a diagram illustrating a conventional sludge filtering device,
2 is a diagram illustrating a stainless steel pickling sludge filtering apparatus according to an embodiment of the present invention,
3 to 5 are views illustrating a stainless steel pickling sludge filtering apparatus according to an embodiment of the present invention in detail.

Advantages and features of the embodiments of the present invention, and a method of achieving them will become apparent with reference to the embodiments described later in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in a variety of different forms, and only these embodiments make the disclosure of the present invention complete, and are common knowledge in the technical field to which the present invention pertains. It is provided to completely inform the scope of the invention to those who have, and the invention is only defined by the scope of the claims. The same reference numerals refer to the same components throughout the specification.

In describing the embodiments of the present invention, if it is determined that a detailed description of a known function or configuration may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted. In addition, terms to be described later are terms defined in consideration of functions in an embodiment of the present invention and may vary according to the intention or custom of users or operators. Therefore, the definition should be made based on the contents throughout this specification.

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

2 is a diagram illustrating a stainless steel pickling sludge filtering apparatus according to an embodiment of the present invention, and FIGS. 3 to 5 are views illustrating a stainless steel pickling sludge filtering apparatus according to an embodiment of the present invention in detail. to be.

2 to 5, the stainless steel pickling sludge filtering apparatus according to an embodiment of the present invention includes an acid recovery tank unit 100, a plurality of filter units 200, a plurality of sludge removal units 300, etc. can do.

The acid recovery tank unit 100 is an acid recovery solution that is discharged after the acid wastewater solution generated by the stainless steel pickling process is introduced and the sludge is filtered, and the inlet member 110, the acid recovery tank member 120, and suction and discharge It may include a member 130 and the like.

Here, the acid recovery tank unit 100 may be provided with an inlet member 110 into which the acid wastewater solution is introduced using an inlet pipe, and is divided by a plurality of filter units 200 to each inlet member 110. An acid recovery tank member 120 through which sludge is filtered for the acid wastewater solution introduced through the sludge may be provided, and a suction and discharge member 130 for sucking and discharging the filtered acid recovery solution through which the sludge is filtered may be provided.

For example, the acid recovery tank member 120 may be divided into a first acid recovery tank area 121, a second acid recovery tank area 122, and a third acid recovery tank area 123. One filter unit 200 among the plurality of filter units 200 may be provided between the recovery tank area 121 and the second acid recovery tank area 122, and the second acid recovery tank area 122 and Another filter unit 200 among the plurality of filter units 200 may be provided between the third acid recovery tank area 123.

In addition, an inlet member 110 is provided in the upper portion of the first acid recovery tank area 121 to allow the acid wastewater solution to flow therein, and a side surface of the third acid recovery tank area 123 is provided with the suction and discharge member 130. The suction pipe 131 is connected so that the acid recovery solution sucked through the suction pump 132 may be discharged to the acid recovery tank through the discharge pipe 133.

In the acid recovery tank unit 100 as described above, as the acid wastewater solution moves to the first acid recovery tank area 121, the second acid recovery tank area 122, and the third acid recovery tank area 123, a plurality of Since the sludge is filtered through the filter unit 200, it is cleaned step by step in the state of the acid recovery solution to be recovered, so that the acid wastewater solution can be smoothly treated and discharged.

The plurality of filter units 200 are provided at a predetermined interval in the acid recovery tank unit 100 and filter the sludge, and the plurality of filter members 210, the rotating members 220, and the plurality of sensing members 230 And the like. For example, when the plurality of acid recovery tank members 120 are provided in three regions, the sludge may be filtered while dividing each region with two filter units 200. Hereinafter, since the two filter units 200 each have the same configuration, only one configuration unit will be described.

Here, the plurality of filter units 200 may be provided with a plurality of filter members 210 arranged in a cross shape, and a rotating member 220 for rotating the plurality of filter members 210 may be provided, A plurality of detection members 230 for detecting a rotation position may be provided corresponding to each of the plurality of filter members 210.

For example, in the plurality of filter members 210, a first filter 211, a second filter 213, a third filter 212, and a fourth filter 214 may be provided in a cross shape at intervals of 90 degrees. However, the sludge can be removed by rotating any one filter and filtering the sludge using a lower filter positioned vertically at the bottom, and rotating it and placing it vertically at the top. The plurality of filter members 210 may be rotated around a rotating shaft rod 215 provided at the center thereof.

In addition, the rotating member 220 is provided with both side bearing blocks 221 so that the rotating shaft rod 215 can be inserted and rotated, and a driven sprocket 222 and a driving belt 223 at one end of the rotating shaft rod 215 , The driving sprocket 224 and the driving motor 225 may be combined to provide rotational force. Here, the both bearing blocks 221 may be firmly fixed to the outside of the acid recovery tank member 120 at a desired position.

Meanwhile, the plurality of sensing members 230 includes a first sensing bar 231 protruding at an angle corresponding to the first filter 211 and a second sensing bar protruding at an angle corresponding to the second filter 212 ( 232, a third sensing bar 233 protruding at an angle corresponding to the third filter 213, and a fourth sensing bar 234 protruding at an angle corresponding to the fourth filter 214 215) may be provided at the other end. Here, the first detection bar 231, the second detection bar 232, the third detection bar 233, and the fourth detection bar 234 may have different lengths.

The first detection bar 231, the second detection bar 232, the third detection bar 233 and the first detection sensor 235 provided at different horizontally in correspondence with the fourth detection bar 234, A second detection sensor 236, a third detection sensor 237, and a fourth detection sensor 238 may be provided, through which the first detection bar 231, according to the rotation of the plurality of filter members 210, The second detection bar 232, the third detection bar 233, and the fourth detection bar 234 are respectively sensed to detect and grasp which filter is located at a specific location.

That is, in the case of the first detection sensor 235, by being disposed at a position corresponding to the length of the first detection bar 231, the first filter 211 corresponding to the first detection bar 231 is at a specific position (for example, For example, it can detect and check whether it is located in the upper, lower, etc.).

The rotating member 220 and the plurality of sensing members 230 as described above may be connected to a control unit (not shown), respectively, and may be driven for a preset time according to a timer.

In addition, the plurality of filter members 210 provided in the plurality of filter units 200 as described above are less than the filtering holes (not shown) of the filter provided in the first filtering unit. A relatively small size may be provided, and in this case, the sludge filtering effect may be further improved.

The plurality of sludge removal units 300 are provided to correspond to the plurality of filter units 200, respectively, and remove the sludge filtered by the plurality of filter units 200 by an air injection method, and the air injection member 310 , It may include a sludge collection member 320, and the like. For example, when a plurality of filter units 200 are provided in two, sludge may be removed and collected by using two sludge removing units 300 corresponding thereto. Hereinafter, since the two sludge removal units 300 each have the same configuration, only one configuration unit will be described.

The air injection member 310 is provided on the upper portion of the plurality of filter members 210, and the upper portion of the plurality of filter members 210 through the air injection nozzle 314 provided to be able to lift (ie, ascend or descend). By injecting air to the upper filter 211 located at to remove the sludge, the fixed plate 311, the first lifting cylinder 312, the support plate 313, the air injection nozzle 314, the air injection nozzle body 315, an air supply hose 316, an on-off valve 317, etc. may be included.

Here, the fixing plate 311 may be provided on the upper portion of the plurality of filter members 210, and the first lifting cylinder 312 may be provided on the fixing plate 311 to lift the support plate 313, and , The support plate 313 may be provided with an air injection nozzle body 315 having a plurality of air injection nozzles 314 to the rear, and an air supply hose 316 for supplying air to the air injection nozzle body 315 ) Can be connected.

For example, a fixing plate 311 having a predetermined thickness may be provided vertically on the upper portion of the plurality of filter members 210, and a plurality of first lifting cylinders 312 are vertically arranged on the front surface of the fixing plate 311. Can be fixed as The first lifting cylinder 312 may be firmly fixed to the fixing plate 311 through a fixing means such as a bolt.

Further, a support plate 313 may be provided at a lower portion of the first lifting cylinder 312 so as to be able to be moved up and down by the first lifting cylinder 312, and such a support plate 313 has an oval shape with an open rear surface. It may be provided as an enclosure type plate.

In addition, the inside of the support plate 313 may be provided with two air injection nozzles 314 up and down. These air injection nozzles 314 are rearward from the cylindrical air injection nozzle body 315 (i.e., filter Position) may be provided with a predetermined interval, and a flexible air supply hose 316 is connected to the side of the air injection nozzle body 315 to supply air. Here, an opening/closing valve 317 for supplying or shutting off air may be provided at a connection portion between the air supply hose 316 and the air injection nozzle body 315.

In addition, the sludge collection member 320 discharges and collects the sludge removed through the air spray member 310, the second lifting cylinder 321, the scattering prevention case 322, the transfer screw 323, the transfer motor 324, a discharge line 325, and may include a collection tank 326.

Here, the second lifting cylinder 321 is provided on the fixed plate 311 to lift the scattering prevention case 322, and the emergency prevention case 322 is provided at the rear of the upper filter 211 to prevent sludge. Scattering can be prevented, and the transfer screw 323 is provided at the inner lower side of the splash prevention case 322 to transfer the sludge in the collection direction through the driving force of the transfer motor 324, and the sludge transferred in the collection direction A discharge line 325 for discharging to be collected in the collection tank 326 may be connected to the lower part of the scattering prevention case 322. Here, the discharge line 325 may be provided as a flexible pipe so that the sludge can be transferred smoothly.

For example, a plurality of second lifting cylinders 321 may be provided on the rear side of the fixed plate 311, and a scattering prevention case 322 may be provided below the second lifting cylinder 321. The prevention case 322 may be provided in the form of a case with an open front.

The upper part of the enclosure of the scattering prevention case 322 is provided on a flat surface and can be firmly fixed to the lower end of the second lifting cylinder 321, and the lower part of the enclosure is provided in a curved shape inclined forward, so that the air spray member ( The sludge removed through 310) can be prevented from being blocked by the scattering prevention case 322 and scattering, as well as allowing the sludge to be smoothly lowered to the lower portion of the scattering prevention case 322.

In addition, a transfer screw 323 may be horizontally provided at the inner lower part of the shatterproof case 322, and the transfer screw 323 is driven by a transfer motor 324 to the bottom of the shatterproof case 322. The lowered sludge may be transported in the collection direction (ie, the direction in which the discharge line 325 is located).

Meanwhile, a discharge line 325 through which the inside and outside of the lower side of the shatterproof case 322 communicates may be provided, and the sludge discharged through the discharge line 325 may be collected and stored in the collection tank 326.

When explaining the operation process of the stainless steel pickling sludge filtering device as described above, the first filter 211 is scattered of the air spray member 310 and the sludge collection member 320 as shown in FIGS. 3 and 4. In a state located between the prevention cases 322, the opening/closing valve 317 is opened and supplied to the air injection nozzle body 315 through the air supply hose 316, and a plurality of pieces are provided to the rear of the air injection nozzle body 315. As air is sprayed on the surface of the first filter 211 located at the rear through the air injection nozzle 314 provided with, the sludge attached to the first filter 211 is blocked by the scattering prevention case 322 It can be moved and discharged to the discharge line 325 through a transfer screw 323 positioned below the transfer screw 323 to be collected in the collection tank 326.

This sludge removal process may be performed for a preset time according to the time setting of the control unit, and when this time elapses, the opening/closing valve 317 may be closed to cut off air supply, and the first lifting cylinder 312 Each lower structure may be raised according to the lifting operation of the and the second lifting cylinder 321.

And, when each of the lower structures is completely raised, the first filter 211 from which the sludge has been removed can be converted into a rotatable state, and the first filter 211 through the rotating member 220 is forward (for example, , Clockwise), and by stopping the operation of the rotating member 220 by detecting the rotation by 90 degrees through the sensing member 230, the plurality of filter members 210 rotate by 90 degrees. Can be done.

Accordingly, when the fourth filter 214 is stopped at the upper position, the first lifting cylinder 312 and the second lifting cylinder 321 perform a lowering operation, so that each lower structure may descend to the sludge removal position. I can.

After that, processes such as air injection, sludge removal, and sludge collection may be repeated from the opening of the opening valve 317.

It goes without saying that the sludge removal process as described above can perform the sludge removal operation by variously adjusting the required time and the required air supply amount according to the set time.

Accordingly, the present invention can provide a stainless steel pickling sludge filtering device capable of automatically removing sludge after filtering the sludge in the acid recovery process after pickling of stainless steel.

In addition, the present invention filters the sludge from the acid wastewater solution using a plurality of filter units provided at regular intervals in the acid recovery tank unit, and by removing the filtered sludge from each of the plurality of filter units by an air spray method, the pickling process It is possible to effectively remove the sludge generated in the acid recovery solution, it is possible to improve the recovery work productivity.

In addition, the present invention is provided with a scattering prevention case at the rear of the upper filter positioned at the top for sludge filtering among a plurality of filter members, thereby preventing scattering of the sludge removed through air injection, as well as reducing the sludge to the bottom. It can be moved to to improve collection efficiency.

In the above description, various embodiments of the present invention have been presented and described, but the present invention is not necessarily limited thereto, and those of ordinary skill in the art to which the present invention pertains, within the scope of the technical spirit of the present invention. It will be easy to see that branch substitutions, modifications and changes are possible.

11: first sludge tank 12: second sludge tank
13: third sludge tank 21: first filter
22: second filter 31: discharge pump
32: suction line 33: discharge line
100: acid recovery tank unit 110: inlet member
120: acid recovery tank member 130: suction and discharge member
200: a plurality of filter units 210: a plurality of filter members
220: rotating member 230; Multiple sensing members
300: a plurality of sludge removal units 310: air injection member
320; Sludge collection member

Claims (6)

An acid recovery tank section through which the acid wastewater solution generated by the pickling process of stainless steel is introduced and the sludge is filtered and the acid recovery solution is discharged;
A plurality of filter units provided at predetermined intervals in the acid recovery tank to filter the sludge,
A plurality of sludge removal units provided corresponding to each of the plurality of filter units and configured to remove the sludge filtered by each of the plurality of filter units by air spraying,
The plurality of filter units include a plurality of filter members each arranged in a cross shape, a rotation member for rotating the plurality of filter members, and a plurality of detection members for detecting rotation positions respectively corresponding to the plurality of filter members. And
The plurality of sludge removal units remove the sludge by injecting air to an upper filter located at an upper portion of the plurality of filter members through an air injection nozzle provided on each of the plurality of filter members to be elevating and descending. And a sludge collection member for discharging and collecting the sludge removed through the air injection member and the air injection member,
The air injection member includes a fixing plate provided on an upper portion of the plurality of filter members, a support plate provided with the air injection nozzle, and a first lifting cylinder provided on the fixing plate to lift the support plate, and ,
The sludge collection member includes a scattering prevention case provided at the rear of the upper filter to prevent scattering of the sludge, a second lifting cylinder provided on the fixing plate to lift the scattering prevention case, and the scattering prevention case. A stainless steel pickling sludge filtering apparatus comprising a transfer screw provided at the lower side of the inside to transfer the sludge in a collection direction, and a discharge line for discharging the sludge transferred in the collection direction to be collected in a collection tank.
The method of claim 1,
The acid recovery tank part,
An inlet member into which the acid wastewater solution flows,
An acid recovery tank member which is partitioned by the plurality of filter units and filtering the sludge with respect to the acid wastewater solution introduced through the inlet member,
After filtering of the sludge is performed, a suction and discharge member for sucking and discharging the acid recovery solution
Stainless steel pickling sludge filtering device comprising a.
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