KR20200072107A - Apparatus for filtering acid cleaning pickling sludge of sts work - Google Patents

Abstract

The present invention relates to an apparatus for filtering acid cleaning sludge of stainless steel (STS). The apparatus includes: an acid recovery tank part that, after an acid wasted water solution generated in an acid cleaning process for STS is introduced into the acid recovery tank part and sludge is filtered, discharges an acid recovery solution; a plurality of filter parts provide to be spaced apart from the acid recovery tank part to filter the sludge; and a plurality of sludge removing parts provided to correspond to the plurality of filter parts to remove the sludge filtered by the plurality of filters in an air injection method, whereby after the sludge is filtered in the acid recovery process after the STS is acid-cleaned, the sludge can be automatically removed.

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 that can be automatically removed after filtering the sludge in the pickling process after pickling of stainless steel.

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

The sludge produced 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 first filtered through the first filter 21 in the first sludge tank 11. 2 moves to the sludge tank 12, is secondarily filtered 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 (for example, including a discharge pump 31, a suction line 32, a discharge line 33, etc.).

However, in the conventional sludge filtering apparatus as described above, the first filter 21 and the second filter 22 must be manually cleaned, replaced, etc., due to the manual filter cleaning and replacement. There is a problem that the productivity of the recovery work of the acid recovery solution is lowered.

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

The present invention is to provide a stainless steel pickling sludge filtering device that can be automatically removed after filtering the sludge in the pickling process after pickling of stainless steel.

In addition, the present invention filters the sludge from the acid waste water solution using a plurality of filter parts provided at regular intervals, and removes the filtered sludge from the plurality of filter parts by air spraying, thereby pickling. It is an object of the present invention to provide a stainless steel pickling sludge filtering device capable of effectively removing sludge generated in a product, thereby improving productivity of a recovery operation of an acid recovery solution.

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

The objectives of the embodiments of the present invention are not limited to those mentioned above, and other objects not mentioned will be clearly understood by those skilled in the art from the following description. .

According to an embodiment of the present invention, the acid recovery water tank generated by the pickling process of the stainless steel is introduced and the sludge is filtered, and then the acid recovery tank part is discharged, and the acid recovery tank part is provided at regular intervals. Stainless steel pickling including a plurality of filter units for filtering sludge, and a plurality of sludge removal units respectively provided corresponding to the plurality of filter units and removing the sludge filtered by the plurality of filter units by air spraying. A sludge filtering device can be provided.

In addition, according to an embodiment of the present invention, the acid recovery tank unit, the acid waste water solution is introduced into the inlet member and the plurality of filter parts are respectively divided by the inlet member for the acid waste water solution introduced through the inlet member A stainless steel pickling sludge filtering apparatus including an acid recovery tank member for filtering the sludge and a suction discharge member for suctioning and discharging the acid recovery solution after the filtering of the sludge is performed may be provided.

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

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

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

In addition, according to an embodiment of the present invention, the sludge collection member is provided at the rear of the upper filter to prevent scattering of the sludge, and a scattering prevention case provided on the fixed plate to raise and lower the scattering prevention case. 2 Stainless steel including a lifting cylinder, a transfer screw provided on the lower side of the scattering prevention case to transfer the sludge in the collecting direction, and a discharge line for discharging the sludge transferred in the collecting direction to be collected in a collection tank A pickling sludge filtering device can be provided.

The present invention can provide a stainless steel pickling sludge filtering device that can be automatically removed after filtering the sludge in the pickling process after pickling of stainless steel.

In addition, the present invention filters the sludge from the acid waste water solution using a plurality of filter parts provided at regular intervals, and removes the filtered sludge from the plurality of filter parts by air spraying, thereby pickling. It is possible to effectively remove the sludge generated in can improve the productivity of the recovery work of the acid recovery solution.

In addition, the present invention is provided with a scattering prevention case at the rear of the upper filter located at the top for filtering sludge among the plurality of filter members, as well as to prevent scattering of the sludge removed through air injection, as well as to lower the sludge. You can improve the collection efficiency by moving to.

1 is a view illustrating a conventional sludge filtering device,
2 is a view illustrating a stainless steel pickling sludge filtering device 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 embodiments of the present invention, and methods of achieving them will be apparent with reference to embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only the embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention pertains. It is provided to completely inform the person having the scope of the invention, and the present invention is only defined by the scope of the claims. The same reference numerals refer to the same components throughout the specification.

In describing embodiments of the present invention, when it is determined that a detailed description of known functions or configurations may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. In addition, terms to be described later are terms defined in consideration of functions in an embodiment of the present invention, which may vary according to a user's or operator's intention or practice. Therefore, the definition should be made based on the contents throughout this specification.

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

2 is a view illustrating a stainless steel pickling sludge filtering device according to an embodiment of the present invention, and FIGS. 3 to 5 are exemplary views for explaining a stainless steel pickling sludge filtering device according to an embodiment of the present invention. 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 part 100, a plurality of filter parts 200, a plurality of sludge removing parts 300, and the like. can do.

The acid recovery tank part 100 is an acid waste water solution generated by a pickling process of stainless steel and the sludge is filtered to discharge the acid recovery solution, and the inlet member 110, the acid recovery tank member 120, and suction discharge It may include a member 130 and the like.

Here, the acid recovery tank unit 100 may be provided with an inflow member 110 through which the acid waste water solution is introduced using an inflow pipe, and each of the intake members 110 is divided by a plurality of filter units 200. An acid recovery tank member 120 in which sludge is filtered for the acid waste water solution introduced through may be provided, and a suction discharge member 130 for suctioning and discharging the acid recovery solution in 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, and the first acid One filter unit 200 of the plurality of filter units 200 may be provided between the recovery tank region 121 and the second acid recovery tank region 122, and the second acid recovery tank region 122 and Another filter unit 200 of the plurality of filter units 200 may be provided between the third acid recovery tank region 123.

In addition, an inflow member 110 may be provided at an upper portion of the first acid recovery tank region 121 to allow the acid waste water solution to flow in, and the side of the third acid recovery tank region 123 may include a suction discharge member 130. The suction pipe 131 is connected so that the acid recovery solution sucked through the suction pump 132 can be discharged to the acid recovery tank through the discharge pipe 133.

As described above, in the acid recovery tank unit 100, as the acid waste water solution moves to the first acid recovery tank region 121, the second acid recovery tank region 122, and the third acid recovery tank region 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 waste water solution can be smoothly processed and discharged.

The plurality of filter units 200 are provided at a predetermined interval apart from the acid recovery tank unit 100 to filter sludge, and include a plurality of filter members 210, a rotating member 220, and a plurality of sensing members 230 It may include, for example, when a plurality of acid recovery tank members 120 are provided in three regions, it is possible to filter the sludge 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 rotation member 220 for rotating the plurality of filter members 210 may be provided, A plurality of sensing members 230 may be provided to sense a rotational position corresponding to each of the plurality of filter members 210.

For example, the plurality of filter members 210 may include a first filter 211, a second filter 213, a third filter 212, and a fourth filter 214 in a cross shape with a 90 degree interval. There is, by rotating any one of the filters to filter the sludge using a lower filter positioned vertically at the bottom, it can be rotated to remove the sludge after being positioned vertically on the top. The plurality of filter members 210 may be rotated with a rotating shaft rod 215 provided at its center as an axis.

In addition, the rotating member 220 is provided with both sides of the bearing block 221, the rotating shaft rod 215 can be inserted and rotated, and a driven sprocket 222 and a driving belt 223 are disposed 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, both sides of the bearing block 221 can be securely 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), the third detection bar 233 protruding at an angle corresponding to the third filter 213, and the fourth sensing bar 234 protruding at an angle corresponding to the fourth filter 214, the rotating shaft rod ( 215) may be provided at the other end. Here, the first sensing bar 231, the second sensing bar 232, the third sensing bar 233 and the fourth sensing 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 is provided in a different position horizontally corresponding to the fourth detection bar 234, The second detection sensor 236, the third detection sensor 237 and the 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 sensing bar 232, the third sensing bar 233, and the fourth sensing bar 234 may be sensed, respectively, to detect and identify which filter is located at a specific location.

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

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

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

The plurality of sludge removal units 300 are provided corresponding to the plurality of filter units 200, respectively, and remove the sludges filtered by the plurality of filter units 200 by the air injection method, the air injection member 310 , Sludge collection member 320, and the like. For example, when a plurality of filter units 200 are provided, sludge can be removed and collected using two sludge removal 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 elevated (ie, raised or lowered) By removing the sludge by injecting air to the upper filter 211 located in, 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, and the like.

Here, the fixed plate 311 may be provided on the upper portion of the plurality of filter members 210, the first lifting cylinder 312 is provided on the fixed plate 311 to lift the support plate 313, , 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 fixed plate 311 having a predetermined thickness may be provided on the upper portion of the plurality of filter members 210, and a plurality of first lifting cylinders 312 may be vertically disposed on the front surface of the fixed plate 311. Can be fixed with. The first lifting cylinder 312 may be securely fixed to the fixing plate 311 through fixing means such as bolts.

In addition, a support plate 313 may be provided at a lower portion of the first elevating cylinder 312 so as to be elevated by the first elevating cylinder 312. The support plate 313 has an elliptical shape with an open rear surface. It may be provided as a housing-shaped plate.

In addition, the inside of the support plate 313 may be provided with two air injection nozzles 314 up and down, and these air injection nozzles 314 are rearward (ie, filters) from the cylindrical air injection nozzle body 315. Position) may be provided with a plurality of intervals, a flexible air supply hose 316 is connected to the side of the air injection nozzle body 315 to supply air. Here, the connecting portion of the air supply hose 316 and the air injection nozzle body 315 may be provided with an on-off valve 317 for supplying or blocking air.

In addition, the sludge collection member 320 is to discharge and collect the sludge removed through the air injection member 310, the second lifting cylinder 321, scattering prevention case 322, transfer screw 323, transfer motor 324, a discharge line 325, a collection tank 326, and the like.

Here, the second lifting cylinder 321 is provided on the fixed plate 311 to be able to elevate the scattering prevention case 322, the emergency prevention case 322 is provided on the rear of the upper filter 211 of the sludge Scattering can be prevented, and the transfer screw 323 is provided on the lower side of the scattering 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 Discharge line 325 for discharging to be collected in the collection tank 326 may be connected to the lower portion of the scattering prevention case (322). Here, the discharge line 325 may be provided as a flexible pipe so that the sludge can be transported smoothly.

For example, a plurality of second lifting cylinders 321 may be provided on the rear surface 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 an enclosure with an open front.

The upper portion of the housing of the scattering prevention case 322 is provided with a flat surface, and can be securely fixed with the lower end of the second lifting cylinder 321, and the lower portion of the housing is provided with a curved shape inclined forward, thereby providing an air injection member ( The sludge removed through 310) can be prevented from being scattered by being blocked by the scattering prevention case 322, and the sludge can be smoothly lowered to the lower portion of the scattering prevention case 322.

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

Meanwhile, a discharge line 325 in which the lower and inner portions of the scattering prevention case 322 communicate with each other may be provided, and sludge discharged through the discharge line 325 may be collected and stored in the collection tank 326.

Referring to the operation process of the stainless steel pickling sludge filtering apparatus as described above, as shown in FIGS. 3 and 4, the first filter 211 is the scattering of the air injection member 310 and the sludge collection member 320 The opening/closing valve 317 is opened in a state located between the prevention cases 322 to be supplied to the air injection nozzle body 315 through the air supply hose 316, and a plurality of air injection nozzle bodies 315 are provided to the rear. Air is sprayed onto the surface of the first filter 211 located at the rear through the air injection nozzle 314 provided with, so that the sludge attached to the first filter 211 is blocked by the scattering prevention case 322 and moves downward. It can be moved and discharged to the discharge line 325 through the transfer screw 323 located at the bottom thereof and collected in the collection tank 326.

The sludge removal process may be performed for a preset time according to the time setting of the control unit, and when this time has elapsed, the on/off valve 317 may be closed to block air supply, and the first lifting cylinder 312 may be used. Each of the sub-structures may be raised according to the rising operation of the and the second lifting cylinder 321.

In addition, when the respective sub-structures are completely raised, the first filter 211 from which the sludge is removed can be converted into a rotatable state, and the first filter 211 is forward (eg, through the rotating member 220). , Clockwise), and stops the operation of the rotating member 220 by detecting the rotation of 90 degrees through the sensing member 230, thereby allowing the plurality of filter members 210 to rotate by 90 degrees. It can be done.

Accordingly, when the fourth filter 214 stops at the upper position, the first elevating cylinder 312 and the second elevating cylinder 321 perform a descending operation, so that each substructure descends to the sludge removal position. Can be.

Thereafter, the process of air injection, sludge removal, sludge collection, etc. may be repeated from the opening of the opening valve 317.

It is needless to say that the sludge removal process as described above can perform a 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 that can be automatically removed after filtering the sludge in the pickling process after pickling of stainless steel.

In addition, the present invention filters the sludge from the acid waste water solution using a plurality of filter parts provided at regular intervals, and removes the filtered sludge from the plurality of filter parts by air spraying, thereby pickling. It is possible to effectively remove the sludge generated in can improve the productivity of the recovery work of the acid recovery solution.

In addition, the present invention is provided with a scattering prevention case at the rear of the upper filter located at the top for filtering sludge among the plurality of filter members, as well as to prevent scattering of the sludge removed through air injection, as well as to lower the sludge. You can improve the collection efficiency by moving to.

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 a person having ordinary knowledge in the technical field to which the present invention pertains may be provided without departing from the technical spirit of the present invention. It will be readily apparent that branch substitution, modification and modification are possible.

11: 1st sludge tank 12: 2nd 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 110: inlet member
120: acid recovery tank member 130: suction 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 unit 310: air injection member
320; Sludge collection member

Claims (6)

An acid recovery tank part in which the acid waste water solution generated by the pickling process of stainless steel flows in and the sludge is filtered to discharge the acid recovery solution;
A plurality of filter units provided at regular intervals to filter the sludge;
A plurality of sludge removal units are provided corresponding to the plurality of filter units, and each of the plurality of filter units is filtered to remove the sludge by an air injection method.
Stainless steel pickling sludge filtering device comprising a.
According to claim 1,
The acid recovery tank unit,
An inflow member through which the acid waste water solution flows,
An acid recovery tank member which is respectively partitioned by the plurality of filter units and filters the sludge for the acid waste water solution introduced through the inflow member,
After the sludge is filtered, a suction and discharge member that sucks and discharges the acid recovery solution
Stainless steel pickling sludge filtering device comprising a.
According to claim 2,
Each of the plurality of filter units,
A plurality of filter members arranged in a cross shape,
And a rotating member for rotating the plurality of filter members,
A plurality of sensing members for sensing the rotational position corresponding to each of the plurality of filter members
Stainless steel pickling sludge filtering device comprising a.
The method of claim 3,
The plurality of sludge removal units, respectively
And the air injection member is provided on the upper portion of the plurality of filter members, the air injection member for removing the sludge by injecting air to the upper filter located on the top of the plurality of filter members through the air injection nozzle provided to be elevated,
Sludge collection member for discharging and collecting the sludge removed through the air injection member
Stainless steel pickling sludge filtering device comprising a.
The method of claim 4,
The air injection member,
And a fixed plate provided on top of the plurality of filter members,
The air injection nozzle is provided with a support plate,
A first lifting cylinder provided on the fixed plate to elevate the support plate
Stainless steel pickling sludge filtering device comprising a.
The method of claim 5,
The sludge collection member,
A scattering prevention case provided at the rear of the upper filter to prevent scattering of the sludge,
A second lifting cylinder which is provided on the fixed plate to elevate the scattering prevention case;
It is provided on the lower side of the scattering prevention case and the transfer screw for transferring the sludge in the collection direction,
Discharge line for discharging the sludge transferred in the collection direction to be collected in a collection tank
Stainless steel pickling sludge filtering device comprising a.

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