Steelmaking sewage multi-stage treatment device

Abstract

The invention belongs to the technical field of sewage treatment, and particularly relates to a steelmaking sewage multi-stage treatment device which comprises a primary filtration treatment mechanism, a secondary adsorption treatment mechanism and an oil stain separation treatment mechanism, the secondary adsorption treatment mechanism is fixedly arranged at the bottom of the primary filtration treatment mechanism, and the oil stain separation treatment mechanism is fixedly arranged at the bottom of the secondary adsorption treatment mechanism; and the oil stain separation treatment mechanism is fixedly arranged on the right side of the secondary adsorption treatment mechanism. The problem that a traditional steelmaking sewage treatment mode can only remove part of large-particle impurities in sewage but is difficult to remove suspended metal powder and greasy dirt in the sewage is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of sewage treatment, and specifically refers to a multi-stage treatment device for steelmaking sewage. Background Art

[0002] In the steel production process, the steelmaking process will produce a large amount of wastewater containing a variety of pollutants. If these wastewaters are discharged directly without effective treatment, they will not only cause serious pollution to the surrounding water bodies, soil and other ecological environments, destroy the ecological balance, but also lead to waste of water resources and increase the water resource pressure in the steel industry.

[0003] Traditional steelmaking wastewater treatment methods, such as simple primary treatment methods such as sedimentation and filtration, can only remove some large-particle impurities in the wastewater, but it is difficult to remove suspended metal powder and oil in the wastewater. The presence of these residual pollutants makes it difficult for the treated water to meet increasingly stringent environmental emission standards, and it is also impossible to achieve the recycling of water resources. Therefore, a steelmaking wastewater treatment device that can solve the above problems is needed. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a multi-stage treatment device for steelmaking wastewater, which can not only remove large-particle impurities in the wastewater, but also effectively remove metal powder and oil pollution in the steelmaking wastewater, solving the problem that the traditional steelmaking wastewater treatment method can only remove some large-particle impurities in the wastewater, but is difficult to remove suspended metal powder and oil pollution in the wastewater.

[0005] The technical solution adopted by the present invention is as follows: The present invention provides a multi-stage treatment device for steelmaking wastewater, including a primary filtering treatment mechanism, a secondary adsorption treatment mechanism and an oil separation treatment mechanism, wherein the secondary adsorption treatment mechanism is fixedly arranged at the bottom of the primary filtering treatment mechanism, and the oil separation treatment mechanism is fixedly arranged on the right side of the secondary adsorption treatment mechanism. The primary filtering treatment mechanism includes a grille rotating filtering assembly and a grille automatic lifting and cleaning assembly, and the grille automatic lifting and cleaning assembly is fixedly arranged on the grille rotating filtering assembly. The secondary adsorption treatment mechanism includes a magnetic rod reciprocating adsorption assembly and a magnetic rod rotating adsorption assembly, and the magnetic rod rotating adsorption assembly is arranged in the magnetic rod reciprocating adsorption assembly. The oil separation treatment mechanism includes a density separation treatment assembly and an oil suction treatment assembly, and the oil suction treatment assembly is fixedly arranged on the density separation treatment assembly.

[0006] Furthermore, the grille rotating filter assembly includes a filter cartridge, an inlet pipe, an outlet pipe, a bidirectional motor and a rotating column, the top of the filter cartridge is provided with a cross opening, the inlet pipe is fixed on the filter cartridge and is connected with the interior of the filter cartridge, the outlet pipe is symmetrically fixed on the bottom of the filter cartridge and is connected with the interior of the filter cartridge, the bidirectional motor is fixed at the bottom of the filter cartridge, the rotating column is provided in the filter cartridge and is fixedly connected to the transmission end of the bidirectional motor, and a circular array of slide grooves is provided on the rotating column.

[0007] Furthermore, the automatic lifting and cleaning assembly of the grille includes a columnar tube, a sliding block, a U-shaped plate, a grille plate, a connecting column, a circular block, a Z-shaped plate, an electric hydraulic cylinder and a support plate, the columnar tube is slidably arranged on the rotating column, the sliding block is slidably arranged in the slide groove and is fixedly connected to the columnar tube, the U-shaped plate array is symmetrically arranged on the columnar tube and is fixedly connected to the columnar tube, the grille plate is slidably arranged between the two U-shaped plates, and the circular array of connecting columns is arranged at the top of the columnar tube and is fixedly connected to the columnar tube.

[0008] Furthermore, the circular block is fixed on the top of the connecting column, the support plate is fixed on the filter cartridge, the electric hydraulic cylinder is fixed on the top of the support plate, and the Z-shaped plate is fixed on the top of the electric hydraulic cylinder and is engaged and rotatably connected with the circular block.

[0009] Furthermore, the magnetic bar reciprocating adsorption assembly includes an adsorption cylinder, a guide tube, a screw, a movable ring, a connecting rod, a T-shaped block and a magnetic bar. The adsorption cylinder is fixedly arranged at the bottom of the water outlet pipe, the screw is rotatably arranged at the inner bottom of the adsorption cylinder and is fixedly connected to the transmission end of the bidirectional motor, the screw is provided with two sections of threads and the directions of the two sections of threads are opposite, the movable ring is symmetrically arranged on the screw, the circular array of connecting rods is arranged on the movable ring and is rotatably connected to the movable ring, the T-shaped block is arranged between the two connecting rods and is rotatably connected to the connecting rod, the magnetic bar is fixedly arranged on the T-shaped block, and the guide tube is fixedly arranged on the adsorption cylinder and is communicated with the interior of the adsorption cylinder.

[0010] Furthermore, the magnetic rod rotating adsorption assembly includes a rack, a reciprocating gear, a columnar block and a magnetic block, the rack is symmetrically arranged below the magnetic rod and fixedly connected to the inner bottom of the adsorption cylinder, the columnar block is rotatably arranged at the bottom of the magnetic rod, the reciprocating gear is fixedly arranged at the bottom of the columnar block and meshes with the rack, and the circular array of magnetic blocks is arranged on the columnar block and fixedly connected to the columnar block.

[0011] Furthermore, the density separation processing component includes a stratification box, a rectangular column, a fixed plate, a movable plate, a conical funnel, a fixed ring, a buoyancy ball, a hose and a rectangular plate. The stratification box is fixedly arranged on the end surface of the guide tube and is connected to the guide tube. The fixed plate is symmetrically fixedly arranged on the inner wall of the stratification box. The rectangular column is fixedly arranged between the two fixed plates and is fixedly connected to the fixed plates. The movable plate is slidably arranged on the rectangular column. The conical funnel is arranged between the two rectangular columns. The circular array of fixed rings is arranged on the conical funnel and is fixedly connected to the conical funnel. The two fixed rings are fixedly connected to the movable plate. The buoyancy ball is fixedly arranged on the fixed ring. The rectangular plate is fixedly arranged on the top of the stratification box. The hose passes through the rectangular plate and is fixedly connected to the bottom of the conical funnel.

[0012] Furthermore, the oil suction and processing assembly includes an oil storage box, a support block, a columnar barrel, an annular block, a lower opening and closing plate, an upper opening and closing plate, a U-shaped block, a connecting plate, a rotating plate, a transmission motor, a vertical plate and an oil outlet pipe. The oil storage box is fixedly mounted on the stratified box, the support block is fixedly mounted on the stratified box, the columnar barrel penetrates the support block and is fixedly connected to the support block, the bottom of the columnar barrel is connected to the end face of the hose, the oil outlet pipe is fixedly mounted on the columnar barrel, the vertical plate is fixedly mounted on the top of the support block, and the transmission motor is fixedly mounted on the vertical plate.

[0013] Furthermore, the lower opening and closing plate is rotatably arranged on the inner bottom of the cylindrical tube, the annular block is slidably arranged in the cylindrical tube, the annular block is made of rubber, the upper opening and closing plate is rotatably arranged on the top of the annular block, the U-shaped block is fixedly arranged on the top of the annular block, the connecting plate is rotatably arranged on the U-shaped block, and the rotating plate is fixedly arranged on the transmission end of the transmission motor and is rotatably connected to the connecting plate.

[0014] By adopting the above structure, the present invention has the following beneficial effects: According to the situation that the traditional steelmaking wastewater treatment method can only remove some large-particle impurities in the wastewater, but it is difficult to remove the suspended metal powder and oil in the wastewater, the combination of a grille rotating filter component and a grille automatic lifting and cleaning component can effectively remove large-particle impurities in the steelmaking wastewater, and can automatically control the grille plate to rise and fall, so that the grille plate can be taken out for cleaning; the combination of a magnetic rod reciprocating adsorption component and a magnetic rod rotating adsorption component can not only adsorb and clean the suspended metal powder in the wastewater, but also automatically clean the metal powder deposited in the device, thereby improving the comprehensiveness of the metal powder cleaning; the combination of a density separation treatment component and an oil absorption treatment component can automatically absorb and treat the oil in the wastewater through the density difference between the oil and the wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1A three-dimensional diagram of a multi-stage treatment device for steelmaking wastewater proposed by the present invention; Figure 2 A cross-sectional view of a multi-stage treatment device for steelmaking wastewater proposed by the present invention; Figure 3 A three-dimensional diagram of a primary filtering treatment mechanism of a multi-stage treatment device for steelmaking wastewater proposed by the present invention; Figure 4 This is an internal structural diagram of a primary filtration treatment mechanism of a multi-stage treatment device for steelmaking wastewater proposed by the present invention; Figure 5 A cross-sectional view of a secondary adsorption treatment mechanism of a multi-stage treatment device for steelmaking wastewater proposed by the present invention; Figure 6 This is an internal structural diagram of a secondary adsorption treatment mechanism of a multi-stage treatment device for steelmaking wastewater proposed by the present invention; Figure 7 A cross-sectional view of a density separation treatment component of a multi-stage treatment device for steelmaking wastewater proposed by the present invention; Figure 8 This is an internal structural diagram of a density separation treatment component of a multi-stage treatment device for steelmaking wastewater proposed by the present invention; Fig. 9 A three-dimensional diagram of an oil-sucking treatment component of a multi-stage treatment device for steelmaking wastewater proposed by the present invention; Fig.10 The present invention provides a cross-sectional view of an oil suction treatment component of a multi-stage treatment device for steelmaking wastewater.

[0016] Among them, 1. primary filtering treatment mechanism, 2. secondary adsorption treatment mechanism, 3. oil separation treatment mechanism, 4. grille rotating filtering assembly, 5. grille automatic lifting and cleaning assembly, 6. magnetic rod reciprocating motion adsorption assembly, 7. magnetic rod rotating adsorption assembly, 8. density separation treatment assembly, 9. oil absorption treatment assembly, 401. filter cartridge, 402. water inlet pipe, 403. water outlet pipe, 404. bidirectional motor, 405. rotating column, 406. slide, 501. columnar tube, 502. sliding block, 503. U-shaped plate, 504. grille plate, 505. connecting column, 506. round block, 507. Z-shaped plate, 508. electric hydraulic cylinder, 509. support plate, 601. adsorption cartridge, 602. diversion Tube, 603, screw rod, 604, moving ring, 605, connecting rod, 606, T-shaped block, 607, magnetic rod, 701, rack, 702, reciprocating gear, 703, columnar block, 704, magnetic block, 801, layered box, 802, rectangular column, 803, fixed plate, 804, moving plate, 805, conical funnel, 806, fixed ring, 807, buoyancy ball, 808, hose, 809, rectangular plate, 901, oil storage box, 902, support block, 903, columnar tube, 904, annular block, 905, lower opening and closing plate, 906, upper opening and closing plate, 907, U-shaped block, 908, connecting plate, 909, rotating plate, 910, transmission motor, 911, vertical plate, 912, oil outlet pipe.

[0017] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0020] like Figure 1 , Figure 2As shown, the present invention proposes a multi-stage treatment device for steelmaking wastewater, including a primary filtering treatment mechanism 1, a secondary adsorption treatment mechanism 2 and an oil separation treatment mechanism 3, wherein the secondary adsorption treatment mechanism 2 is fixedly arranged at the bottom of the primary filtering treatment mechanism 1, and the oil separation treatment mechanism 3 is fixedly arranged on the right side of the secondary adsorption treatment mechanism 2, the primary filtering treatment mechanism 1 includes a grille rotating filtering assembly 4 and a grille automatic lifting and cleaning assembly 5, and the grille automatic lifting and cleaning assembly 5 is fixedly arranged on the grille rotating filtering assembly 4, the secondary adsorption treatment mechanism 2 includes a magnetic rod reciprocating adsorption assembly 6 and a magnetic rod rotating adsorption assembly 7, and the magnetic rod rotating adsorption assembly 7 is arranged in the magnetic rod reciprocating adsorption assembly 6, the oil separation treatment mechanism 3 includes a density separation treatment assembly 8 and an oil suction treatment assembly 9, and the oil suction treatment assembly 9 is fixedly arranged on the density separation treatment assembly 8.

[0021] like Figure 2 , Figure 3 , Figure 4 As shown, the grille rotating filter assembly 4 includes a filter cartridge 401, an inlet pipe 402, an outlet pipe 403, a bidirectional motor 404 and a rotating column 405. The top of the filter cartridge 401 is provided with a cross opening, the inlet pipe 402 is fixedly arranged on the filter cartridge 401 and is communicated with the interior of the filter cartridge 401, the outlet pipe 403 is symmetrically fixedly arranged at the bottom of the filter cartridge 401 and is communicated with the interior of the filter cartridge 401, the bidirectional motor 404 is fixedly arranged at the bottom of the filter cartridge 401, the rotating column 405 is arranged in the filter cartridge 401 and is fixedly connected to the transmission end of the bidirectional motor 404, and a slide groove 406 is provided in a circular array on the rotating column 405.

[0022] like Figure 2 , Figure 3 , Figure 4 As shown, the automatic grille lifting and cleaning assembly 5 includes a columnar tube 501, a sliding block 502, a U-shaped plate 503, a grille plate 504, a connecting column 505, a circular block 506, a Z-shaped plate 507, an electric hydraulic cylinder 508 and a support plate 509. The columnar tube 501 is slidably arranged on the rotating column 405, the sliding block 502 is slidably arranged in the slide groove 406 and is fixedly connected to the columnar tube 501, the U-shaped plates 503 are symmetrically arranged in an array on the columnar tube 501 and are fixedly connected to the columnar tube 501, the grille plate 504 is slidably arranged between the two U-shaped plates 503, and the connecting column 505 is circularly arranged in an array at the top of the columnar tube 501 and is fixedly connected to the columnar tube 501.

[0023] like Figure 3 , Figure 4As shown, the circular block 506 is fixed on the top of the connecting column 505, the support plate 509 is fixed on the filter cartridge 401, the electric hydraulic cylinder 508 is fixed on the top of the support plate 509, and the Z-shaped plate 507 is fixed on the top of the electric hydraulic cylinder 508 and is engaged and rotatably connected with the circular block 506.

[0024] like Figure 2 , Figure 5 , Figure 6 As shown, the magnetic bar reciprocating adsorption assembly 6 includes an adsorption cylinder 601, a guide tube 602, a screw rod 603, a movable ring 604, a connecting rod 605, a T-shaped block 606 and a magnetic bar 607. The adsorption cylinder 601 is fixedly arranged at the bottom of the water outlet pipe 403, the screw rod 603 is rotatably arranged at the inner bottom of the adsorption cylinder 601 and is fixedly connected to the transmission end of the bidirectional motor 404, the screw rod 603 is provided with two sections of threads and the directions of the two sections of threads are opposite, the movable ring 604 is symmetrically arranged on the screw rod 603, the connecting rod 605 is arranged in a circular array on the movable ring 604 and is rotatably connected to the movable ring 604, the T-shaped block 606 is arranged between the two connecting rods 605 and is rotatably connected to the connecting rod 605, the magnetic bar 607 is fixedly arranged on the T-shaped block 606, the guide tube 602 is fixedly arranged on the adsorption cylinder 601 and is connected to the inside of the adsorption cylinder 601.

[0025] like Figure 2 , Figure 5 , Figure 6 As shown, the magnetic rod rotating adsorption assembly 7 includes a rack 701, a reciprocating gear 702, a columnar block 703 and a magnetic block 704. The rack 701 is symmetrically arranged below the magnetic rod 607 and fixedly connected to the inner bottom of the adsorption cylinder 601. The columnar block 703 is rotatably arranged at the bottom of the magnetic rod 607. The reciprocating gear 702 is fixedly arranged at the bottom of the columnar block 703 and meshed with the rack 701. The magnetic block 704 is arranged in a circular array on the columnar block 703 and fixedly connected to the columnar block 703.

[0026] like Figure 1 , Figure 2 , Figure 7 , Figure 8As shown, the density separation processing assembly 8 includes a stratification box 801, a rectangular column 802, a fixed plate 803, a movable plate 804, a conical funnel 805, a fixed ring 806, a buoyancy ball 807, a hose 808 and a rectangular plate 809. The stratification box 801 is fixedly arranged on the end surface of the guide tube 602 and is connected to the guide tube 602. The fixed plate 803 is symmetrically fixed on the inner wall of the stratification box 801. The rectangular column 802 is fixedly arranged between the two fixed plates 803 and is fixedly connected to the fixed plates 803. The movable plate 804 is slidably arranged on the rectangular column 802, the conical funnel 805 is arranged between the two rectangular columns 802, the circular array of the fixed rings 806 is arranged on the conical funnel 805 and is fixedly connected to the conical funnel 805, the two fixed rings 806 are fixedly connected to the movable plate 804, the buoyancy ball 807 is fixedly arranged on the fixed ring 806, the rectangular plate 809 is fixedly arranged on the top of the stratification box 801, and the hose 808 passes through the rectangular plate 809 and is fixedly connected to the bottom of the conical funnel 805.

[0027] like Figure 1 , Figure 2 , Figure 8 , Fig. 9 , Fig.10 As shown, the oil suction and processing assembly 9 includes an oil storage box 901, a support block 902, a cylindrical barrel 903, an annular block 904, a lower opening and closing plate 905, an upper opening and closing plate 906, a U-shaped block 907, a connecting plate 908, a rotating plate 909, a transmission motor 910, a vertical plate 911 and an oil outlet pipe 912. The oil storage box 901 is fixedly arranged on the stratification box 801, the support block 902 is fixedly arranged on the stratification box 801, the cylindrical barrel 903 passes through the support block 902 and is fixedly connected to the support block 902, the bottom of the cylindrical barrel 903 is connected to the end face of the hose 808, the oil outlet pipe 912 is fixedly arranged on the cylindrical barrel 903, the vertical plate 911 is fixedly arranged on the top of the support block 902, and the transmission motor 910 is fixedly arranged on the vertical plate 911.

[0028] like Fig. 9 , Fig.10 As shown, the lower opening and closing plate 905 is rotatably arranged on the inner bottom of the cylindrical tube 903, the annular block 904 is slidably arranged in the cylindrical tube 903, the annular block 904 is made of rubber, the upper opening and closing plate 906 is rotatably arranged on the top of the annular block 904, the U-shaped block 907 is fixedly arranged on the top of the annular block 904, the connecting plate 908 is rotatably arranged on the U-shaped block 907, and the rotating plate 909 is fixedly arranged on the transmission end of the transmission motor 910 and is rotatably connected to the connecting plate 908.

[0029] When in use, sewage is added into the filter cartridge 401 from the water inlet pipe 402, and then the bidirectional motor 404 is started to make the bidirectional motor 404 rotate alternately in forward and reverse directions. The bidirectional motor 404 simultaneously drives the rotating column 405 and the screw rod 603 to rotate. The rotating column 405 drives the columnar tube 501, the connecting column 505 and the circular block 506 to rotate together through the sliding block 502. The columnar tube 501 drives the U-shaped plate 503 to rotate, and the U-shaped plate 503 drives the grille plate 504 to rotate, thereby intercepting and filtering larger metal blocks in the sewage and blocking the metal blocks on the grille plate 504. After the initial filtration is completed, the outlet pipe 403 is opened, and the sewage after the initial filtration enters the adsorption cartridge 601 below from the outlet pipe 403. Since the bidirectional motor 404 drives the screw rod 603 to rotate alternately in forward and reverse directions, the screw rod 603 drives the two moving rings 604 to move upward. When the two moving rings 604 move toward the middle at the same time, the moving rings 604 drive the connecting rod 605 to rotate, so that the angle between the two connecting rods 605 becomes smaller, and the connecting rod 605 drives the T-shaped block 606 to move outward. When the two moving rings 604 move toward both ends at the same time, the angle between the two connecting rods 605 becomes larger, and the connecting rod 605 drives the T-shaped block 606 to move inward, so that the T-shaped block 606 drives the magnetic rod 607 to reciprocate, and the magnetic rod 607 adsorbs the floating metal powder in the sewage. When the magnetic rod 607 reciprocates, the reciprocating gear 702 and the columnar block 703 are driven to rotate together through the rack 701, and the columnar block 703 drives the magnetic block 704 to rotate, so that the magnetic block 704 reciprocates while adsorbing the metal powder deposited at the bottom of the adsorption cylinder 601, thereby achieving comprehensive removal of the metal powder;After the secondary filtration is completed, the guide pipe 602 is opened to allow the sewage after the secondary filtration to enter the stratification box 801. The sewage gradually rises in the stratification box 801, and the buoyancy ball 807 gradually moves upward under the buoyancy of the sewage liquid surface. The buoyancy ball 807 drives the fixed ring 806 and the conical funnel 805 to move upward together, and the fixed ring 806 drives the moving plate 804 to move upward along the rectangular column 802 until the sewage liquid surface stabilizes. The oily substances in the sewage gradually float on the liquid surface, and the top of the conical funnel 805 will be slightly lower than the liquid surface, so the oily substances will gradually enter the conical funnel 805 and the hose 808. At this time, the transmission motor 910 is started, and the transmission motor 910 drives the rotating plate 909 to rotate, and the rotating plate 909 drives the connecting plate 90 8 swings and reciprocates up and down, and the connecting plate 908 drives the U-shaped block 907 and the annular block 904 to reciprocate up and down. When the annular block 904 moves upward, suction is generated on the lower side, and the lower opening and closing plate 905 is opened, and the oily substance in the hose 808 is sucked into the columnar tube 903. When the annular block 904 moves downward, thrust is generated on the lower side, and the lower opening and closing plate 905 is closed. When the annular block 904 squeezes the oily substance, the oily substance passes through the annular block 904 and generates thrust on the upper opening and closing plate 906. The upper opening and closing plate 906 opens, and the oily substance enters the upper side of the annular block 904 and enters the oil storage box 901 below through the oil outlet pipe 912. The oily substance in the sewage can be removed by reciprocating as above, and the sewage treatment can be completed. ;

[0030] If it is necessary to clean the grille plate 504, it is only necessary to control the bidirectional motor 404 to drive the grille plate 504 to rotate until the U-shaped plate 503 corresponds to the cross opening, and then start the electric hydraulic cylinder 508, so that the electric hydraulic cylinder 508 drives the Z-shaped plate 507 to move upward, and the Z-shaped plate 507 drives the circular block 506 to move upward, and the circular block 506 drives the columnar tube 501 and the sliding block 502 to move upward along the slide groove 406 through the connecting column 505, and the columnar tube 501 drives the U-shaped plate 503 and the grille plate 504 to move upward along the slide groove 406 until the grille plate 504 completely passes through the cross opening and moves to the top of the filter cylinder 401, and then the grille plate 504 is pulled out of the U-shaped plate 503 for cleaning. After cleaning, the grille plate 504 is reinserted into the U-shaped plate 503, and reset as described above to complete the cleaning of the grille plate 504.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A multi-stage treatment device for steelmaking wastewater, characterized in that: The invention comprises a primary filtering treatment mechanism (1), a secondary adsorption treatment mechanism (2) and an oil-contamination separation treatment mechanism (3), wherein the secondary adsorption treatment mechanism (2) is fixedly arranged at the bottom of the primary filtering treatment mechanism (1), and the oil-contamination separation treatment mechanism (3) is fixedly arranged at the right side of the secondary adsorption treatment mechanism (2). The primary filtering treatment mechanism (1) comprises a grille rotating filtering assembly (4) and a grille automatic lifting and cleaning assembly (5), wherein the grille automatic lifting and cleaning assembly (5) is fixedly arranged on the grille rotating filtering assembly (4), the secondary adsorption treatment mechanism (2) comprises a magnetic rod reciprocating adsorption assembly (6) and a magnetic rod rotating adsorption assembly (7), wherein the magnetic rod rotating adsorption assembly (7) is arranged in the magnetic rod reciprocating adsorption assembly (6), and the oil-contamination separation treatment mechanism (3) comprises a density separation treatment assembly (8) and an oil-contamination suction treatment assembly (9), wherein the oil-contamination suction treatment assembly (9) is fixedly arranged on the density separation treatment assembly (8).

2. A multi-stage treatment device for steelmaking wastewater according to claim 1, characterized in that: The grille rotary filter assembly (4) comprises a filter cartridge (401), a water inlet pipe (402), a water outlet pipe (403), a bidirectional motor (404) and a rotating column (405); a cross opening is provided at the top of the filter cartridge (401); the water inlet pipe (402) is fixedly arranged on the filter cartridge (401) and communicates with the interior of the filter cartridge (401); the water outlet pipe (403) is symmetrically fixedly arranged at the bottom of the filter cartridge (401) and communicates with the interior of the filter cartridge (401); the bidirectional motor (404) is fixedly arranged at the bottom of the filter cartridge (401); the rotating column (405) is arranged in the filter cartridge (401) and is fixedly connected to the transmission end of the bidirectional motor (404); and a sliding groove (406) is provided in a circular array on the rotating column (405).

3. A multi-stage treatment device for steelmaking wastewater according to claim 2, characterized in that: The automatic grille lifting and cleaning assembly (5) comprises a columnar tube (501), a sliding block (502), a U-shaped plate (503), a grille plate (504), a connecting column (505), a circular block (506), a Z-shaped plate (507), an electric hydraulic cylinder (508) and a support plate (509); the columnar tube (501) is slidably arranged on the rotating column (405); the sliding block (502) is slidably arranged in the slide groove (406) and is fixedly connected to the columnar tube (501); the U-shaped plates (503) are symmetrically arranged in an array on the columnar tube (501) and are fixedly connected to the columnar tube (501); the grille plate (504) is slidably arranged between two U-shaped plates (503); and the connecting columns (505) are circularly arranged in an array on the top of the columnar tube (501) and are fixedly connected to the columnar tube (501).

4. A multi-stage treatment device for steelmaking wastewater according to claim 3, characterized in that: The circular block (506) is fixedly arranged on the top of the connecting column (505), the support plate (509) is fixedly arranged on the filter cartridge (401), the electric hydraulic cylinder (508) is fixedly arranged on the top of the support plate (509), and the Z-shaped plate (507) is fixedly arranged on the top of the electric hydraulic cylinder (508) and is engaged and rotatably connected with the circular block (506).

5. A multi-stage treatment device for steelmaking wastewater according to claim 4, characterized in that: The magnetic rod reciprocating motion adsorption assembly (6) comprises an adsorption cylinder (601), a guide tube (602), a screw (603), a movable ring (604), a connecting rod (605), a T-shaped block (606) and a magnetic rod (607); the adsorption cylinder (601) is fixedly arranged at the bottom of the water outlet pipe (403); the screw (603) is rotatably arranged at the inner bottom of the adsorption cylinder (601) and is fixedly connected to the driving end of the bidirectional motor (404); the screw (603) is provided with two sections of threads and the two sections of threads are The movable ring (604) is symmetrically arranged on the screw rod (603) in opposite directions; the connecting rods (605) are arranged in a circular array on the movable ring (604) and are rotatably connected to the movable ring (604); the T-shaped block (606) is arranged between the two connecting rods (605) and is rotatably connected to the connecting rods (605); the magnetic rod (607) is fixedly arranged on the T-shaped block (606); and the guide tube (602) is fixedly arranged on the adsorption cylinder (601) and is in communication with the interior of the adsorption cylinder (601).

6. A multi-stage treatment device for steelmaking wastewater according to claim 5, characterized in that: The magnetic rod rotating adsorption assembly (7) comprises a rack (701), a reciprocating gear (702), a columnar block (703) and a magnetic block (704); the rack (701) is symmetrically arranged below the magnetic rod (607) and fixedly connected to the inner bottom of the adsorption cylinder (601); the columnar block (703) is rotatably arranged at the bottom of the magnetic rod (607); the reciprocating gear (702) is fixedly arranged at the bottom of the columnar block (703); and the magnetic blocks (704) are arranged in a circular array on the columnar block (703) and fixedly connected to the columnar block (703).

7. A multi-stage treatment device for steelmaking wastewater according to claim 6, characterized in that: The density separation processing assembly (8) comprises a stratification box (801), a rectangular column (802), a fixed plate (803), a movable plate (804), a conical funnel (805), a fixed ring (806), a buoyancy ball (807), a hose (808) and a rectangular plate (809); the stratification box (801) is fixedly arranged on the end surface of the flow guide tube (602) and is connected to the flow guide tube (602); the fixed plate (803) is symmetrically fixedly arranged on the inner wall of the stratification box (801); the rectangular column (802) is fixedly arranged between two of the fixed plates (803) and is fixedly connected to the fixed plates (803); The movable plate (804) is slidably arranged on the rectangular column (802), the conical funnel (805) is arranged between the two rectangular columns (802), the fixed ring (806) is arranged in a circular array on the conical funnel (805) and is fixedly connected to the conical funnel (805), the two fixed rings (806) are fixedly connected to the movable plate (804), the buoyancy ball (807) is fixedly arranged on the fixed ring (806), the rectangular plate (809) is fixedly arranged on the top of the stratified box (801), and the hose (808) passes through the rectangular plate (809) and is fixedly connected to the bottom of the conical funnel (805).

8. A multi-stage treatment device for steelmaking wastewater according to claim 7, characterized in that: The oil pollution absorption and processing assembly (9) comprises an oil storage box (901), a support block (902), a columnar tube (903), an annular block (904), a lower opening and closing plate (905), an upper opening and closing plate (906), a U-shaped block (907), a connecting plate (908), a rotating plate (909), a transmission motor (910), a vertical plate (911) and an oil outlet pipe (912). The oil storage box (901) is fixedly arranged on the stratification box (801), and the support block (902) is fixedly arranged on the stratification box (801), the columnar tube (903) passes through the support block (902) and is fixedly connected to the support block (902), the bottom of the columnar tube (903) is connected to the end face of the hose (808), the oil outlet pipe (912) is fixedly arranged on the columnar tube (903), the vertical plate (911) is fixedly arranged on the top of the support block (902), and the transmission motor (910) is fixedly arranged on the vertical plate (911).

9. A multi-stage treatment device for steelmaking wastewater according to claim 8, characterized in that: The lower opening and closing plate (905) is rotatably arranged on the inner bottom of the columnar tube (903); the annular block (904) is slidably arranged in the columnar tube (903); the annular block (904) is made of rubber; the upper opening and closing plate (906) is rotatably arranged on the top of the annular block (904); the U-shaped block (907) is fixedly arranged on the top of the annular block (904); the connecting plate (908) is rotatably arranged on the U-shaped block (907); and the rotating plate (909) is fixedly arranged on the transmission end of the transmission motor (910) and is rotatably connected to the connecting plate (908).

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