Steel strip pickling line waste liquid filtration device

Abstract

This invention discloses a waste liquid filtration device for steel strip pickling lines, comprising a processing sphere with a spherical hollow structure, and a drive motor disposed at the top of the processing sphere. A feed pipe is connected to the outer wall of the processing sphere near the top, and a discharge port is provided on the outer side of the processing sphere. An annular electric guide rail is fixedly connected to the outer side of the processing sphere. A sealing shell is slidably connected to the inside of the annular electric guide rail via an electric slider. An arc-shaped opening is provided on the sealing shell. A liquid outlet pipe is connected to the bottom of the processing sphere, and a support base is fixedly connected to the bottom of the annular electric guide rail. A partition plate is fixedly connected to the inner wall of the processing sphere, and a connecting pipe is passed through and fixedly connected to the partition plate. This invention relates to the field of waste liquid filtration technology. This waste liquid filtration device for steel strip pickling lines can perform more refined filtration, filtering out smaller impurities in the waste liquid.

Description

Technical Field

[0001] This invention relates to the field of waste liquid filtration technology, specifically a waste liquid filtration device for steel strip pickling lines. Background Technology

[0002] In the steel industry, steel rolling and metal product manufacturing require pickling to remove iron oxide scale and other impurities from the steel surface, typically using hydrochloric acid. After pickling, the steel is rinsed with water in a rinsing tank to remove residual acid. Once the iron ion concentration in the pickling tank reaches a controlled value, the waste acid is discharged and replaced with fresh acid. Therefore, the pickling process results in the emission of hydrogen chloride waste gas, acidic wastewater, and a large amount of waste acid. The pickling line is a process in steel metallurgy aimed at removing oxide scale from steel plates for further rolling. During pickling, a large amount of iron oxide scale detaches and precipitates in the acid. Because this wastewater contains a large amount of heavy metal impurities, it can severely impact water quality; therefore, it needs to be filtered before discharge. The wastewater filtration equipment uses filters to separate heavy metal impurities from the water.

[0003] Existing devices are unable to filter out smaller impurities more precisely when filtering metal impurities in waste liquid, and they are also unable to precipitate and filter iron ions in waste liquid, resulting in low filtration efficiency. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides: a waste liquid filtration device for steel strip pickling line, including a processing sphere shell having a spherical hollow structure, and a drive motor disposed at the top of the processing sphere shell. A feed pipe is connected to the outer wall of the processing sphere shell near the top. A discharge port is opened on the outer side of the processing sphere shell. An annular electric guide rail is fixedly connected to the outer side of the processing sphere shell. A sealing shell is slidably connected to the inside of the annular electric guide rail via an electric slider. An arc-shaped opening is opened on the sealing shell. A liquid outlet pipe is connected to the bottom of the processing sphere shell. A support base is fixedly connected to the bottom of the annular electric guide rail. A partition plate is fixedly connected to the inner wall of the processing sphere shell, and a connecting pipe is passed through and fixedly connected to the partition plate.

[0005] A filtration device for solid-liquid separation of waste liquid, wherein the filtration device is disposed inside the processing sphere shell;

[0006] A dispensing device is used to dispense iron ion flocculant into the waste liquid. The dispensing device is located inside the treatment sphere.

[0007] Preferably, multiple sets of discharge ports are evenly distributed on the processing spherical shell, multiple sets of arc-shaped openings are provided and correspond one-to-one with the discharge ports, two sets of annular electric guide rails are provided and symmetrically distributed on both sides of the sealed shell, multiple sets of support seats are provided, and a control valve is provided at the bottom of the connecting pipe.

[0008] Preferably, the filtering device includes a control rod with a groove at its bottom. An electric telescopic rod is fixedly connected inside the groove. A connecting sleeve is fixedly connected to the movable end of the electric telescopic rod. A locking block is fixedly connected to the inner wall of the connecting sleeve. A limit block is provided inside the connecting sleeve. A locking groove is formed on the outer side of the limit block. A support column is fixedly connected to the bottom of the limit block. A connecting pad is fixedly connected to the outer side of the support column near the bottom. A first filter screen is rotatably connected to the outer side of the support column via a rolling bearing. A ring-shaped sealing ring is fixedly connected to the connecting pad. A second filter screen is fixedly connected to the end of the connecting pad away from the support column. A cleaning device is installed on the outside of the control rod. The waste liquid from the steel strip pickling line that needs to be filtered is poured into the processing sphere from the feed pipe. The waste liquid is pretreated by the dispensing device. The treated waste liquid is discharged into the bottom cavity of the partition plate from the connecting pipe. The waste liquid entering the bottom cavity of the partition plate is filtered by the first filter screen and discharged from the outlet pipe. The solid metal impurities inside the waste liquid remain on the first filter screen. This can filter out the solid impurities mixed in with the waste liquid and achieve the purpose of solid-liquid separation.

[0009] Preferably, multiple sets of slots and blocks are provided and correspond one-to-one. The outer side of the second filter screen is rotatably connected to the inner wall of the annular sealing ring through a bearing. The second filter screen is located directly below the first filter screen and is slidably connected to the first filter screen. When the electric telescopic rod is turned on, the connecting sleeve is pushed down and pressed so that the connecting sleeve is fitted into the limiting block. At this time, the block on the inner wall of the connecting sleeve is inserted into the slot. Then, the drive motor is turned on, and the control rod is rotated through the dispensing device. The control rod drives the block and support column in the connecting sleeve to rotate. The support column drives the second filter screen to rotate through the connecting pad, so that the filter holes on the second filter screen, which were originally completely overlapped with the first filter screen, are deviated. The area where the filter holes on the first filter screen and the filter holes on the second filter screen overlap gradually decreases. At this time, the particles filtered through this area are smaller, and more refined filtration can be performed to filter out smaller impurities in the waste liquid.

[0010] Preferably, the top of the control rod passes through the partition plate and is rotatably connected to the partition plate via a bearing; the outer wall of the annular sealing ring is fixedly connected to the inner wall of the processing spherical shell; and the support column passes through the first filter screen and the second filter screen.

[0011] Preferably, the cleaning device includes a positioning sleeve, a cleaning roller rotatably connected to the outer side of the positioning sleeve via a rotating seat, a buffer plate fixedly connected to the end of the cleaning roller away from the positioning sleeve, a rolling ball fixedly connected to the end of the buffer plate away from the cleaning roller, a rubber pad sleeved and fixedly connected to the outer side of the rolling ball, a support positioning plate fixedly connected to the outer side of the cleaning roller, an annular fixing plate penetrating and fixedly connected to the support positioning plate, a cleaning brush head slidably connected to the inner wall of the annular fixing plate, and a return spring fixedly connected to one end of the cleaning brush head. When the control lever rotates, it drives the fixed spring... The positioning sleeve rotates, which in turn drives the cleaning roller to rotate. At this time, the rubber pad moves along the surface of the first filter screen and drives the rolling ball to roll through friction. The rolling ball then drives the cleaning roller to rotate. The rotating cleaning roller drives the cleaning brush head to clean the surface of the first filter screen. After the waste liquid is filtered, the annular electric guide rail is turned on to drive the sealing shell to rotate. The arc-shaped opening on the sealing shell is aligned with the discharge port, and then the drive motor is turned on again. The rotating cleaning roller can then discharge the solid impurities accumulated on the first filter screen from the discharge port, which can prevent solid impurities from accumulating on the filter screen for a long time and affecting the filtration efficiency.

[0012] Preferably, the positioning sleeve is fitted onto the control rod and fixedly connected to the control rod, the cleaning roller is located above the first filter screen, multiple sets of the cleaning roller are provided and evenly distributed on the positioning sleeve, and the outer side of the rubber pad extends to the top of the first filter screen.

[0013] Preferably, the end of the reset spring away from the cleaning brush head is fixedly connected to the outer wall of the cleaning brush roller, multiple sets of the support positioning plates are provided and staggered on the cleaning brush roller, and one end of the cleaning brush head is equipped with bristles.

[0014] Preferably, the dispensing device includes a rotating shaft, on which a liquid storage shell is sleeved and rotatably connected. A feeding pipe is connected to one side of the liquid storage shell. Electric nozzles are symmetrically installed on the outer side of the liquid storage shell. Arc-shaped actuating plates are evenly installed on the outer side of the rotating shaft. Actuating ports are opened on the arc-shaped actuating plates, and an extension plate is fixedly connected to the inner wall of the actuating ports. After the waste liquid enters the treatment sphere, the electric nozzles are turned on, dispensing the iron ion flocculant inside the liquid storage shell into the waste liquid inside the treatment sphere. Then, the drive motor is turned on to rotate the rotating shaft, which in turn rotates the arc-shaped actuating plates. The arc-shaped actuating plates mix the waste liquid and flocculant through the extension plates, causing the flocculant to react with the iron ions inside the waste liquid, thereby filtering the generated precipitate and diffusing the sprayed flocculant into the waste liquid, effectively improving the mixing efficiency of the flocculant and waste liquid.

[0015] Preferably, the top of the rotating shaft is fixedly connected to the output end of the drive motor, the bottom of the rotating shaft is fixedly connected to the top of the control rod, the feeding pipe passes through the processing sphere and is fixedly connected to the processing sphere, and the interior of the liquid storage tank is filled with iron ion flocculant.

[0016] This invention provides a waste liquid filtration device for steel strip pickling lines. It has the following beneficial effects:

[0017] 1. This steel strip pickling line waste liquid filtration device, through the installation of the filtration device, allows the waste liquid from the steel strip pickling line that needs to be filtered to be poured into the processing sphere shell through the feed pipe. The waste liquid is pretreated using the dispensing device. The treated waste liquid is discharged into the bottom cavity of the partition plate through the connecting pipe. The waste liquid entering the bottom cavity of the partition plate is filtered through the first filter screen and discharged through the outlet pipe, while the solid metal impurities inside the waste liquid remain on the first filter screen. This process filters out the solid impurities mixed in with the waste liquid, achieving the purpose of solid-liquid separation.

[0018] 2. This waste liquid filtration device for steel strip pickling line, through the installation of the first and second filter screens, activates the electric telescopic rod to push the connecting sleeve downwards, causing the connecting sleeve to fit into the limiting block. At this time, the locking block on the inner wall of the connecting sleeve inserts into the locking groove. Then, the drive motor is activated, and the control rod is rotated through the dispensing device. The control rod drives the locking block and support column inside the connecting sleeve to rotate. The support column drives the second filter screen to rotate through the connecting pad, causing the filter holes on the second filter screen, which were originally completely overlapped with the first filter screen, to deviate. The area where the filter holes on the first and second filter screens overlap gradually decreases. At this time, the particles filtered through this area are smaller, which can achieve more refined filtration and filter out smaller impurities in the waste liquid.

[0019] 3. This waste liquid filtration device for steel strip pickling line, through the installation of the cleaning device, when the control rod rotates, it drives the positioning sleeve to rotate, and the positioning sleeve drives the cleaning brush roller to rotate. At this time, the rubber pad moves along the surface of the first filter screen and drives the rolling ball to roll through friction. The rolling ball drives the cleaning brush roller to rotate, and the rotating cleaning brush roller drives the cleaning brush head to clean the surface of the first filter screen. When the waste liquid is filtered, the annular electric guide rail is turned on to drive the sealing shell to rotate, aligning the arc-shaped opening on the sealing shell with the discharge port. Then the drive motor is turned on again, and the rotating cleaning brush roller can be used to discharge the solid impurities accumulated above the first filter screen from the discharge port, which can avoid the solid impurities from accumulating on the filter screen for a long time and affecting the filtration efficiency.

[0020] 4. This waste liquid filtration device for steel strip pickling line, through the installation of the feeding device, allows the waste liquid to enter the treatment sphere. The electric nozzle is then activated to feed the iron ion flocculant from the storage tank into the waste liquid inside the treatment sphere. Simultaneously, the drive motor is activated to rotate the rotating shaft, which in turn rotates the arc-shaped actuating plate. The arc-shaped actuating plate, through an extension plate, mixes the waste liquid and flocculant, causing the flocculant to react with the iron ions in the waste liquid, thereby filtering the generated precipitate. Furthermore, the sprayed flocculant is diffused into the waste liquid, effectively improving the mixing efficiency between the flocculant and the waste liquid. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the waste liquid filtration device for steel strip pickling line of the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of the spherical shell processed by the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the partition plate of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the filtration device of the present invention;

[0025] Figure 5 This is a schematic diagram of the control lever of the present invention;

[0026] Figure 6 For the present invention Figure 5 Enlarged view of the structure at point A in the middle;

[0027] Figure 7 This is a schematic diagram of the cleaning device of the present invention;

[0028] Figure 8 This is a schematic diagram of the dispensing device of the present invention.

[0029] In the diagram: 1. Processing sphere shell; 2. Drive motor; 3. Feed pipe; 4. Discharge port; 5. Circular electric guide rail; 6. Sealed outer shell; 7. Arc-shaped opening; 8. Filtering device; 81. Control rod; 82. Groove; 83. Electric telescopic rod; 84. Connecting sleeve; 85. Locking block; 86. Limiting block; 87. Slot; 88. Support column; 89. Cleaning device; 891. Positioning sleeve; 892. Cleaning brush roller; 893. Buffer plate; 894. Rolling ball; 895. Rubber pad 896. Support positioning plate; 897. Annular fixing plate; 898. Cleaning brush head; 899. Return spring; 810. Connecting pad; 811. First filter screen; 812. Annular sealing ring; 813. Second filter screen; 9. Dispensing device; 91. Rotating shaft; 92. Liquid storage tank; 93. Feeding pipe; 94. Electric nozzle; 95. Arc-shaped actuating plate; 96. Actuating port; 97. Extension plate; 10. Liquid outlet pipe; 11. Support base; 12. Divider plate; 13. Connecting pipe. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0031] For the first embodiment, please refer to... Figures 1-8 The present invention provides a technical solution: a waste liquid filtration device for steel strip pickling line, including a processing spherical shell 1, which has a spherical hollow structure, and a drive motor 2 disposed on the top of the processing spherical shell 1. A feed pipe 3 is connected to the outer wall of the processing spherical shell 1 near the top. A discharge port 4 is opened on the outer side of the processing spherical shell 1. An annular electric guide rail 5 is fixedly connected to the outer side of the processing spherical shell 1. A sealing shell 6 is slidably connected to the inside of the annular electric guide rail 5 through an electric slider. An arc-shaped opening 7 is opened on the sealing shell 6. A liquid outlet pipe 10 is connected to the bottom of the processing spherical shell 1. A support base 11 is fixedly connected to the bottom of the annular electric guide rail 5. A partition plate 12 is fixedly connected to the inner wall of the processing spherical shell 1. A connecting pipe 13 is passed through and fixedly connected to the partition plate 12.

[0032] Filtering device 8, which is used for solid-liquid separation of waste liquid, is installed inside the processing sphere 1;

[0033] The dispensing device 9 is used to dispense iron ion flocculant into the waste liquid. The dispensing device 9 is located inside the treatment sphere 1.

[0034] Multiple sets of discharge ports 4 are evenly distributed on the processing spherical shell 1. Multiple sets of arc-shaped ports 7 are provided and correspond one-to-one with the discharge ports 4. Two sets of annular electric guide rails 5 are provided and symmetrically distributed on both sides of the sealed shell 6. Multiple sets of support seats 11 are provided. A control valve is provided at the bottom of the connecting pipe 13.

[0035] The filter device 8 includes a control rod 81, a groove 82 at the bottom of the control rod 81, an electric telescopic rod 83 fixedly connected inside the groove 82, a connecting sleeve 84 fixedly connected to the movable end of the electric telescopic rod 83, a locking block 85 fixedly connected to the inner wall of the connecting sleeve 84, a limiting block 86 provided inside the connecting sleeve 84, a slot 87 provided on the outer side of the limiting block 86, a support column 88 fixedly connected to the bottom of the limiting block 86, a connecting pad 810 fixedly connected to the outer side of the support column 88 near the bottom, a first filter screen 811 rotatably connected to the outer side of the support column 88 via a rolling bearing, an annular sealing ring 812 fixedly connected to the outer side of the first filter screen 811, a second filter screen 813 fixedly connected to the end of the connecting pad 810 away from the support column 88, and a cleaning device 89 installed on the outer side of the control rod 81.

[0036] Multiple sets of slots 87 and blocks 85 are provided and correspond one to one. The outer side of the second filter screen 813 is rotatably connected to the inner wall of the annular sealing ring 812 through a bearing. The second filter screen 813 is located directly below the first filter screen 811 and is slidably connected to the first filter screen 811.

[0037] The top of the control lever 81 passes through the partition plate 12 and is rotatably connected to the partition plate 12 via a bearing. The outer wall of the annular sealing ring 812 is fixedly connected to the inner wall of the processing spherical shell 1. The support column 88 passes through the first filter screen 811 and the second filter screen 813.

[0038] The cleaning device 89 includes a positioning sleeve 891. A cleaning brush roller 892 is rotatably connected to the outer side of the positioning sleeve 891 via a rotating seat. A buffer plate 893 is fixedly connected to the end of the cleaning brush roller 892 away from the positioning sleeve 891. A rolling ball 894 is fixedly connected to the end of the buffer plate 893 away from the cleaning brush roller 892. A rubber pad 895 is sleeved and fixedly connected to the outer side of the rolling ball 894. A support positioning plate 896 is fixedly connected to the outer side of the cleaning brush roller 892. An annular fixing plate 897 is passed through and fixedly connected to the support positioning plate 896. A cleaning brush head 898 is slidably connected to the inner wall of the annular fixing plate 897. A return spring 899 is fixedly connected to one end of the cleaning brush head 898.

[0039] The positioning sleeve 891 is sleeved on the control rod 81 and fixedly connected to the control rod 81. The cleaning brush roller 892 is located above the first filter screen 811. Multiple sets of cleaning brush rollers 892 are provided and evenly distributed on the positioning sleeve 891. The outer side of the rubber pad 895 extends to the top of the first filter screen 811.

[0040] The end of the return spring 899 away from the cleaning brush head 898 is fixedly connected to the outer wall of the cleaning brush roller 892. Multiple sets of support positioning plates 896 are provided and are staggered on the cleaning brush roller 892. One end of the cleaning brush head 898 is equipped with bristles.

[0041] In use, the waste liquid from the steel strip pickling line that needs to be filtered is poured into the processing sphere 1 through the feed pipe 3. The pre-treatment is carried out using the dispensing device 9. The treated waste liquid is discharged into the bottom cavity of the partition plate 12 through the connecting pipe 13. The waste liquid entering the bottom cavity of the partition plate 12 is filtered through the first filter screen 811 and discharged through the outlet pipe 10. The solid metal impurities inside the waste liquid remain on the first filter screen 811, thus filtering out the solid impurities mixed in with the waste liquid and achieving the purpose of solid-liquid separation.

[0042] Activate the electric telescopic rod 83 to push the connecting sleeve 84, press the connecting sleeve 84 downwards, and let the connecting sleeve 84 fit into the limiting block 86. At this time, the locking block 85 on the inner wall of the connecting sleeve 84 is inserted into the locking groove 87. Then, activate the drive motor 2, which drives the control rod 81 to rotate through the dispensing device 9. The control rod 81 drives the locking block 85 and the support column 88 inside the connecting sleeve 84 to rotate. The support column 88 drives the second filter screen 813 to rotate through the connecting pad 810, causing the filter holes on the second filter screen 813, which was originally completely overlapped with the first filter screen 811, to deviate. The area where the filter holes on the first filter screen 811 and the filter holes on the second filter screen 813 overlap gradually decreases. At this time, the particles filtered through this area are smaller, and more refined filtration can be performed to filter out smaller impurities in the waste liquid.

[0043] When the control lever 81 rotates, it drives the positioning sleeve 891 to rotate. The positioning sleeve 891 drives the cleaning roller 892 to rotate. At this time, the rubber pad 895 moves along the surface of the first filter screen 811 and drives the rolling ball 894 to roll through friction. The rolling ball 894 drives the cleaning roller 892 to rotate. The rotating cleaning roller 892 drives the cleaning brush head 898 to clean the surface of the first filter screen 811. After the waste liquid is filtered, the annular electric guide rail 5 is turned on to drive the sealing shell 6 to rotate. The arc-shaped opening 7 on the sealing shell 6 is aligned with the discharge port 4. Then the drive motor 2 is turned on again. The rotating cleaning roller 892 can then discharge the solid impurities accumulated on the first filter screen 811 from the discharge port 4, which can prevent solid impurities from accumulating on the filter screen for a long time and affecting the filtration efficiency.

[0044] Second embodiment, please refer to Figures 1-8The present invention provides a technical solution: Based on the first embodiment, the dispensing device 9 includes a rotating shaft 91, a liquid storage shell 92 is sleeved on and rotatably connected to the rotating shaft 91, a feeding pipe 93 is connected to one side of the liquid storage shell 92, an electric nozzle 94 is symmetrically installed on the outer side of the liquid storage shell 92, an arc-shaped actuating plate 95 is evenly installed on the outer side of the rotating shaft 91, an actuating port 96 is opened on the arc-shaped actuating plate 95, and an extension plate 97 is fixedly connected to the inner wall of the actuating port 96.

[0045] The top of the rotating shaft 91 is fixedly connected to the output end of the drive motor 2, the bottom of the rotating shaft 91 is fixedly connected to the top of the control rod 81, the feeding pipe 93 passes through the processing shell 1 and is fixedly connected to the processing shell 1, and the interior of the liquid storage shell 92 is filled with iron ion flocculant.

[0046] In use, after the waste liquid enters the treatment sphere 1, the electric nozzle 94 is turned on, and the iron ion flocculant inside the storage tank 92 is added to the waste liquid inside the treatment sphere 1 using the electric nozzle 94. Then, the drive motor 2 is turned on to drive the rotating shaft 91 to rotate. The rotating shaft 91 drives the arc-shaped actuating plate 95 to rotate. The arc-shaped actuating plate 95 mixes the waste liquid and flocculant inside through the extension plate 97, so that the flocculant reacts with the iron ions inside the waste liquid, thereby filtering the generated precipitate and diffusing the sprayed flocculant into the waste liquid, effectively improving the mixing efficiency of flocculant and waste liquid.

[0047] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A waste liquid filtration device for steel strip pickling line, comprising a treatment spherical shell (1), characterized in that: The processing sphere (1) has a spherical hollow structure and a drive motor (2) set on the top of the processing sphere (1). The outer wall of the processing sphere (1) is connected to a feed pipe (3) near the top. The outer side of the processing sphere (1) is provided with a discharge port (4). The outer side of the processing sphere (1) is fixedly connected to an annular electric guide rail (5). The interior of the annular electric guide rail (5) is slidably connected to a sealing shell (6) through an electric slider. The sealing shell (6) is provided with an arc-shaped opening (7). The bottom of the processing sphere (1) is connected to a liquid outlet pipe (10). The bottom of the annular electric guide rail (5) is fixedly connected to a support base (11). The inner wall of the processing sphere (1) is fixedly connected to a partition plate (12). A connecting pipe (13) is passed through and fixedly connected to the partition plate (12). A filter device (8) is used for solid-liquid separation of waste liquid, and the filter device (8) is disposed inside the processing sphere (1); The dispensing device (9) dispenses iron ion flocculant into the waste liquid. The dispensing device (9) is located inside the treatment sphere (1). The filter device (8) includes a control rod (81), a groove (82) is provided at the bottom of the control rod (81), an electric telescopic rod (83) is fixedly connected inside the groove (82), a connecting sleeve (84) is fixedly connected to the movable end of the electric telescopic rod (83), a limit block (86) is provided inside the connecting sleeve (84), a support column (88) is fixedly connected to the bottom of the limit block (86), a cleaning device (89) is installed on the outside of the control rod (81), a connecting pad (810) is fixedly connected to the outside of the support column (88) near the bottom, and a second filter screen (813) is fixedly connected to the end of the connecting pad (810) away from the support column (88); the outside of the second filter screen (813) is rotatably connected to the inner wall of the annular sealing ring (812) through a bearing, and the second filter screen (813) is located directly below the first filter screen (811) and is slidably connected to the first filter screen (811); The cleaning device (89) includes a positioning sleeve (891), and a cleaning brush roller (892) is rotatably connected to the outer side of the positioning sleeve (891) via a rotating seat. A buffer plate (893) is fixedly connected to the end of the cleaning brush roller (892) away from the positioning sleeve (891). A rolling ball (894) is fixedly connected to the end of the buffer plate (893) away from the cleaning brush roller (892). A rubber pad (895) is sleeved and fixedly connected to the outer side of the rolling ball (894). A support positioning plate (896) is fixedly connected to the outer side of the cleaning brush roller (892). An annular fixing plate (897) is passed through and fixedly connected to the support positioning plate (896). A cleaning brush head (898) is slidably connected to the inner wall of the annular fixing plate (897). A return spring (899) is fixedly connected to one end of the cleaning brush head (898). The dispensing device (9) includes a rotating shaft (91), on which a liquid storage shell (92) is sleeved and rotatably connected. A feeding pipe (93) is connected to one side of the liquid storage shell (92). Electric nozzles (94) are symmetrically installed on the outer side of the liquid storage shell (92). Arc-shaped actuating plates (95) are evenly installed on the outer side of the rotating shaft (91). A actuating port (96) is opened on the arc-shaped actuating plate (95), and an extension plate (97) is fixedly connected to the inner wall of the actuating port (96).

2. The waste liquid filtration device for steel strip pickling line according to claim 1, characterized in that: The discharge port (4) has multiple sets and is evenly distributed on the processing spherical shell (1). The arc-shaped port (7) has multiple sets and corresponds one-to-one with the discharge port (4). The annular electric guide rail (5) has two sets and is symmetrically distributed on both sides of the sealed shell (6). The support base (11) has multiple sets. The bottom of the connecting pipe (13) is equipped with a control valve.

3. The waste liquid filtration device for steel strip pickling line according to claim 2, characterized in that: The inner wall of the connecting sleeve (84) is fixedly connected to a locking block (85), the outer side of the limiting block (86) is provided with a locking groove (87), the outer side of the support column (88) is rotatably connected to a first filter screen (811) through a rolling bearing, and the outer side of the first filter screen (811) is fixedly connected to an annular sealing ring (812).

4. The waste liquid filtration device for steel strip pickling line according to claim 3, characterized in that: The card slots (87) and card blocks (85) are provided in multiple sets and correspond one to one.

5. The waste liquid filtration device for steel strip pickling line according to claim 4, characterized in that: The top of the control rod (81) passes through the partition plate (12) and is rotatably connected to the partition plate (12) through a bearing. The outer wall of the annular sealing ring (812) is fixedly connected to the inner wall of the processing spherical shell (1). The support column (88) passes through the first filter screen (811) and the second filter screen (813).

6. The waste liquid filtration device for steel strip pickling line according to claim 5, characterized in that: The positioning sleeve (891) is sleeved on the control rod (81) and fixedly connected to the control rod (81). The cleaning roller (892) is located above the first filter screen (811). Multiple sets of the cleaning roller (892) are provided and evenly distributed on the positioning sleeve (891). The outer side of the rubber pad (895) extends to the top of the first filter screen (811).

7. The waste liquid filtration device for steel strip pickling line according to claim 6, characterized in that: The end of the return spring (899) away from the cleaning brush head (898) is fixedly connected to the outer wall of the cleaning brush roller (892). The support positioning plate (896) is provided in multiple sets and is staggered on the cleaning brush roller (892). One end of the cleaning brush head (898) is equipped with brush bristles.

8. The waste liquid filtration device for steel strip pickling line according to claim 7, characterized in that: The top of the rotating shaft (91) is fixedly connected to the output end of the drive motor (2), the bottom of the rotating shaft (91) is fixedly connected to the top of the control rod (81), the feeding pipe (93) passes through the processing shell (1) and is fixedly connected to the processing shell (1), and the interior of the liquid storage shell (92) is filled with iron ion flocculant.

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