Industrial sewage treatment device

Abstract

The invention relates to an industrial sewage treatment device, and relates to the field of sewage treatment.The industrial sewage treatment device comprises a water purification tank, the water purification tank is internally divided into a salvage area and a reaction area which are arranged up and down, the reaction area is provided with a stirring mechanism, the salvage area is provided with a salvage mechanism, and the salvage mechanism comprises a salvage net piece and a salvage motor driving the salvage net piece to rotate; an auxiliary filtering mechanism is further arranged in the water purifying tank, the auxiliary filtering mechanism comprises a filter screen plate which is transversely arranged, a through hole for the salvage mechanism to penetrate through is formed in the filter screen plate, a driving assembly for driving the filter screen plate to ascend and descend is connected to the filter screen plate, and when the filter screen plate ascends to make contact with the bottom end of the salvage net piece, the filter screen plate stops ascending. The sewage purification device has the effect of improving the sewage purification working efficiency.

Description

Technical Field

[0001] The present application relates to the field of sewage treatment, and in particular to an industrial sewage treatment device. Background Art

[0002] Industrial wastewater refers to wastewater and waste liquid generated by industrial production. Industrial wastewater is of various types and complex in composition. Most industrial wastewater contains a variety of toxic substances. If discharged directly, it will pollute the environment and cause great harm to human health. Therefore, it is necessary to develop comprehensive utilization, turn harm into benefit, and take corresponding purification measures according to the pollutant components and sewage concentration in the sewage before it can be discharged.

[0003] Today's industrial wastewater treatment systems generally use chemical reactions to treat harmful substances in sewage. This method generally involves manually adding chemicals to the sewage to treat the sewage. After the chemicals react with the sewage, floating impurities are produced, which are then salvaged manually to complete the sewage treatment.

[0004] However, the efficiency of manual salvaging of floating impurities is low. Summary of the invention

[0005] In order to improve the efficiency of purifying sewage, the present application provides an industrial sewage treatment device.

[0006] The industrial sewage treatment device provided in this application adopts the following technical solution: An industrial sewage treatment device comprises a clean water tank, wherein the clean water tank is divided into a salvage zone and a reaction zone arranged in an upper and lower manner, the reaction zone is provided with a stirring mechanism, the salvage zone is provided with a salvage mechanism, the salvage mechanism comprises a salvage net and a salvage motor driving the salvage net to rotate, the clean water tank is also provided with an auxiliary filtering mechanism, the auxiliary filtering mechanism comprises a laterally arranged filter plate, the filter plate is provided with a through hole for the salvage mechanism to pass through, the filter plate is connected to a driving component for driving the filter plate to rise and fall, and the filter plate stops rising when it rises to contact the bottom end of the salvage net.

[0007] By adopting the above technical solution, the stirring mechanism is started to stir the sewage and the reagent in the clean water tank, and the floating impurities generated in the reaction move upward and rise to the upper layer of the sewage. The salvage motor is started to drive the salvage net to rotate, and the salvage net salvages the floating impurities in the clean water tank. At the same time, the auxiliary filtering mechanism is started, and the driving component drives the filter plate to rise to salvage the impurities mixed in the water. When the filter plate rises to contact the salvage net, the filter plate is controlled to stop rising. At this time, the salvage net continues to rotate to clean the impurities salvaged on the filter plate, thereby improving the efficiency of sewage purification.

[0008] Preferably, the structure of the mixer includes a stirring shaft fixedly connected to the inner bottom wall of the clean water tank, a stirring motor for driving the stirring shaft to rotate is fixedly connected to the outer bottom wall of the clean water tank, and a plurality of stirring rods are installed on the side wall of the stirring shaft.

[0009] By adopting the above technical solution, the stirring motor is started, and the output shaft of the stirring motor drives the stirring shaft and multiple stirring rods to rotate, so that sewage and chemicals are easily stirred.

[0010] Preferably, the side wall of the stirring shaft is provided with a plurality of vertically arranged mounting grooves, one mounting groove corresponds to a stirring rod, one end of the stirring rod is hinged to the bottom wall of the mounting groove, and a torsion spring is installed at each hinge, one end of the torsion spring is fixedly connected to the bottom wall of the mounting groove, and the other end is fixedly connected to the stirring rod. When the torsion spring is in a normal state, the stirring shaft is arranged perpendicular to the stirring rod, the through hole is connected to the stirring shaft, and the diameter of the through hole is larger than the diameter of the stirring shaft.

[0011] By adopting the above technical solution, when the filter plate rises, the edge of the through hole pushes each stirring rod to gradually move toward the direction close to the bottom wall of the corresponding installation groove, and the stirring rod rotates into the installation groove to be in a folded state, which facilitates the stirring rod in the folded state to pass through the through hole more smoothly. Similarly, when the filter plate descends, each stirring rod gradually rotates downward and enters the installation groove, which facilitates the smooth lifting and lowering of the filter plate.

[0012] Preferably, the driving assembly includes a guide column fixedly connected to the inner bottom wall of the clean water tank, and a screw rod rotating with the inner bottom wall of the clean water tank, the screw rod is threadedly connected to the filter plate, the guide column is slidably connected to the filter plate, the inner side wall of the clean water tank near the salvage area is fixedly connected with a fixed block and a fixed block, one end of the screw rod is fixedly connected to the fixed block, one end of the guide column is fixedly connected to the fixed block, and the outer bottom wall of the clean water tank is fixedly connected to a reciprocating motor that drives the screw to rotate reciprocatingly.

[0013] By adopting the above technical solution, the reciprocating motor is started to drive the lead screw to rotate forward, and the lead screw rotation drives the filter plate to rise along the guide column. The reciprocating motor is started to drive the lead screw to rotate reversely, and the lead screw rotation drives the filter plate to descend along the guide column, so that the lifting and lowering of the filter plate is easily controlled.

[0014] Preferably, groove one and groove two are provided on the upper surface of the filter plate. When the filter plate rises to contact the bottom end of the salvage net, the first fixed block is plugged into groove one, the second fixed block is plugged into groove two, and the upper surfaces of the first fixed block and the second fixed block are flush with the upper surface of the filter plate.

[0015] By adopting the above technical solution, when the filter plate rises to contact the bottom of the salvage mesh, the filter plate rises to the highest point. At this time, the upper surface of the fixing block 1 and the upper surface of the fixing block 2 are flush with the upper surface of the filter screen, and the salvage mesh can smoothly scrape off the impurities on the filter plate when rotating.

[0016] Preferably, the salvage motor is fixedly connected to the upper surface of the outer side of the clean water tank, and the upper surface of the inner side of the clean water tank is rotatably connected to a fixed rotating shaft coaxial with the output shaft of the salvage motor, and a mounting plate is fixedly connected to the side of the rotating shaft, and the mounting plate is detachably connected to the salvage net. A discharge port is opened on one side of the clean water tank, and a sealing component for sealing or opening the discharge port is connected to the discharge port. A discharge slide rail is fixedly connected to the discharge port, and the discharge slide rail gradually tilts downward in the direction away from the discharge port.

[0017] By adopting the above technical solution, the salvage motor is started, and the output group of the salvage motor drives the rotating shaft and the mounting plate to rotate. The rotation of the mounting plate can drive the salvage net to rotate around the rotating shaft, so that impurities can be salvaged. When the salvage net needs to be disassembled and replaced, the discharge port is controlled to open by the blocking component, and then the salvage net is disassembled between the salvage net and the mounting plate. The disassembled salvage net moves along the discharge slide rail to another area for collection. Then the new salvage net is installed on the mounting plate, and the discharge port is blocked by the blocking component. The operation is simple and convenient.

[0018] Preferably, a side of the mounting plate away from the rotating shaft is provided with a long groove, the bottom wall of the long groove is fixedly connected to an electromagnet, the salvage net comprises a frame and a cover net fixedly connected to the frame, one end of the frame is fixedly connected to an iron rod plugged into the long groove, when the electromagnet is energized, the iron rod is fastened and adsorbed on the mounting plate.

[0019] By adopting the above technical solution, the electromagnet is powered off, and the frame can be easily separated from the long slot, thereby completing the disassembly of the frame. The frame on the new salvage net is plugged into the long slot, and the electromagnet is powered on, and the installation of the salvage net can be completed at this time, which is simple and convenient to operate.

[0020] Preferably, the sealing assembly includes an arc plate slidably connected to the outer wall of the clean water tank, the arc plate blocks the discharge port, and a plurality of protruding teeth are provided on the side of the arc plate facing away from the clean water tank, the protruding teeth are meshed with gears, and a sealing motor is fixedly connected to the outer wall of the clean water tank, and the output shaft of the sealing motor is coaxially fixed with the gear.

[0021] By adopting the above technical solution, the blocking motor is driven, and the output shaft of the blocking motor drives the gear to rotate. The rotation of the gear drives the arc plate to move towards or away from the discharge port through multiple convex teeth, so that it is convenient to block the discharge port or control the opening of the discharge port.

[0022] Preferably, a magnet ring is fixedly connected to the inner wall of the through hole, a sealing block is installed at the upper end of the stirring shaft, a fixing groove is opened on the bottom surface of the sealing block, a magnet ring two is fixedly connected to the bottom surface of the sealing block, a magnet gasket one is fixedly connected to the bottom wall of the fixing groove, and a magnet gasket two adsorbed to the magnet gasket one is fixedly connected to the upper end surface of the stirring shaft, when the filter plate rises and drives the through hole to separate from the upper end of the stirring shaft, the sealing block separates from the stirring shaft and the magnet ring one and the magnet ring two are adsorbed to each other, and the outer wall of the sealing block contacts the inner wall of the through hole.

[0023] By adopting the above technical solution, when the filter plate is placed at the lower end of the clean water tank, the magnet gasket 1 and the magnet gasket 2 are mutually attracted, and the blocking block is installed at the upper end of the stirring shaft. When the filter plate rises and gradually separates from the filter plate, the magnet ring 1 and the magnet ring 2 are mutually attracted, and the blocking block blocks the through hole at this time, thereby reducing the situation where some impurities fall down from the through hole and separate from the filter plate when the salvage net scrapes the impurities on the filter plate.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. Improve the efficiency of sewage purification; 2. When the filter plate is raised or lowered, each stirring rod gradually rotates into the installation groove, which facilitates the smooth lifting and lowering of the filter plate; 3. It reduces the situation where some impurities fall down from the through holes and detach from the filter plate when the salvage net scrapes the impurities on the filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the device embodied in the embodiment of the present application.

[0026] Figure 2 It is a structural schematic diagram of a salvage mechanism according to an embodiment of the present application.

[0027] Figure 3 It is a schematic diagram of the structure of the blocking component embodied in an embodiment of the present application.

[0028] Figure 4 It is a structural schematic diagram of an embodiment of the present application showing that the filter plate rises to the highest point.

[0029] Description of reference numerals: 1. clean water tank; 11. salvage area; 12. reaction area; 13. water inlet pipe; 14. drain pipe; 15. discharge port; 2. stirring mechanism; 21. stirring shaft; 211. mounting groove; 22. stirring motor; 23. stirring rod; 24. second magnet gasket; 3. salvage mechanism; 31. salvage net; 311. frame; 312. cover net; 32. salvage motor; 33. rotating shaft; 34. mounting plate; 341. long groove; 35. iron rod; 36. electromagnet; 4. Sealing assembly; 41. Arc plate; 42. Protruding teeth; 43. Sealing motor; 44. Gear; 5. Discharging slide rail; 6. Auxiliary filtering mechanism; 61. Filter plate; 611. Through hole; 612. Groove 1; 613. Groove 2; 62. Driving assembly; 621. Guide column; 622. Screw rod; 623. One fixed block; 624. Two fixed blocks; 625. Reciprocating motor; 7. One magnet ring; 8. Sealing block; 81. Fixed groove; 811. One magnet gasket; 9. Two magnet rings. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-Figure 4 This application is described in further detail.

[0031] The present application discloses an industrial wastewater treatment device. Figure 1 and Figure 2 The industrial sewage treatment device includes a purification box, which is divided into a salvage area 11 and a reaction area 12 arranged in an upper and lower manner. The reaction area 12 is provided with a stirring mechanism 2, and the salvage area 11 is provided with a salvage mechanism 3. The upper end of the purification box is fixedly connected with a water inlet pipe 13, and the water inlet pipe 13 is used to pump sewage into the clean water tank 1. A medicine port for adding medicine is opened at the upper end of the purification box. A drainage pipe 14 is fixedly connected to the lower end of the clean water tank 1.

[0032] The stirring mechanism 2 includes a stirring shaft 21 fixedly connected to the inner bottom wall of the purification box, and a stirring motor 22 is fixedly connected to the outer bottom wall of the purification box. The output shaft of the stirring motor 22 vertically penetrates the bottom wall of the purification box and is coaxially fixed to the stirring shaft 21. A plurality of stirring rods 23 are installed on the side wall of the stirring shaft 21. The stirring rods 23 can be strip stirring rods 23, blade stirring rods 23, etc. of different shapes and sizes according to actual needs.

[0033] The side wall of the stirring shaft 21 is provided with a plurality of mounting grooves 211, one mounting groove 211 corresponds to one stirring rod 23, one end of the stirring rod 23 is hinged to the bottom wall of the mounting groove 211, and a torsion spring is installed at each hinge, one end of the torsion spring is fixedly connected to the middle of the bottom wall of the mounting groove 211, and the other end is fixedly connected to the stirring rod 23. The stirring rod 23 can rotate upward or downward and enter the corresponding mounting groove 211. When each torsion spring is in a normal state, each stirring rod 23 is arranged vertically to the stirring shaft 21, and when the stirring rod 23 rotates upward or downward and enters the corresponding mounting groove 211, each torsion spring is in a power storage state.

[0034] Reference Figure 1 and Figure 2 The salvage mechanism 3 includes a salvage net 31 and a salvage motor 32 for driving the salvage net 31 to rotate. The salvage motor 32 is fixedly connected to the upper top surface of the outer side of the clean water tank 1. The output shaft of the salvage motor 32 passes through the top wall of the clean water tank 1 downward and is coaxially fixed with a rotating shaft 33. The side of the rotating shaft 33 is fixedly connected with a mounting plate 34, and the mounting plate 34 is detachably connected to the salvage net 31. A discharge port 15 is provided on one side of the clean water tank 1. A blocking component 4 for blocking or opening the discharge port 15 is connected to the discharge port 15. A discharge slide rail 5 is also fixedly connected to the discharge port 15. The discharge slide rail 5 is located on the outer side of the clean water tank 1, and the discharge slide rail 5 gradually tilts downward in a direction away from the clean water tank 1.

[0035] The fishing net 31 includes a frame 311 and a cover net 312 fixedly connected to one side of the frame 311. A long groove 341 is provided on a side of the mounting plate 34 away from the rotating shaft 33, and the long groove 341 vertically penetrates the mounting plate 34. An iron rod 35 plugged into the long groove 341 is fixedly connected to one end of the frame 311, and an electromagnet 36 is installed on the bottom wall of the long groove 341. When the electromagnet 36 is energized, the iron rod 35 is fastened and adsorbed on the mounting plate 34.

[0036] When the fishing net 31 needs to be disassembled, the electromagnet 36 is powered off, and the iron rod 35 can be smoothly separated from the long groove 341 on the mounting plate 34, so that quick disassembly is achieved; when the iron rod 35 needs to be installed, the electromagnet 36 is powered on after the iron rod 35 is inserted into the long groove 341, and the iron rod 35 is fastened and adsorbed on the mounting plate 34. Reference Figure 1 and Figure 3 The blocking assembly 4 includes an arc plate 41 slidably connected to the outer wall of the clean water tank 1. The arc plate 41 moves toward or away from the discharge port 15 to block or open the discharge port 15. A plurality of convex teeth 42 are provided on the side of the arc plate 41 away from the clean water tank 1. A blocking motor 43 is fixedly connected to the outer wall of the clean water tank 1. A gear 44 is coaxially fixedly connected to the output shaft of the blocking motor 43. The gear 44 meshes with the convex teeth 42.

[0037] The blocking motor 43 is driven, and the output shaft of the blocking motor 43 rotates forward and reversely, thereby driving the gear 44 to rotate forward and reversely. The rotation of the gear 44 drives the arc plate 41 to move toward or away from the discharge port 15 through the multiple protruding teeth 42, thereby achieving the blocking and opening of the discharge port 15.

[0038] Reference Figure 1 and Figure 4 An auxiliary filtering mechanism 6 is also provided in the purification box. The auxiliary filtering mechanism 6 includes a horizontally arranged filter plate 61. The filter plate 61 is provided with a through hole 611 for the salvage mechanism 3 to pass through. The filter plate 61 is connected to a driving component 62 for driving the filter plate 61 to rise and fall.

[0039] The driving assembly 62 includes a guide column 621 and a screw rod 622 fixedly connected to the inner bottom wall of the purification box. The screw rod 622 passes through the filter plate 61 and is threadedly connected to the filter plate 61. The guide column 621 passes through the filter plate 61 and is slidably connected to the filter plate 61. A fixed block 623 and a second fixed block 624 are fixedly connected to the inner side wall of the clean water tank 1 near the salvage area 11. The upper end of the screw rod 622 is fixedly connected to the fixed block 623, and the upper end of the guide column 621 is fixedly connected to the second fixed block 624. A reciprocating motor 625 is fixedly connected to the outer bottom wall of the clean water tank 1. The output shaft of the reciprocating motor 625 vertically passes through the bottom wall of the clean water tank 1 and is coaxially fixed to the screw. The fixed block 623 and the second fixed block 624 can be fixed to the purification box by bolts or welding to provide a stable support structure.

[0040] The upper surface of the filter plate 61 is provided with a groove one 612 and a groove two 613. When the filter plate 61 rises to contact the bottom end of the salvage net 31, a fixed block 623 is plugged into the groove one 612, and the size of the groove one 612 matches the size of the fixed block one 623. The fixed block two 624 is plugged into the groove two 613, and the size of the groove two 613 matches the size of the fixed block two 624. The upper surfaces of the fixed blocks one 623 and two 624 are flush with the upper surface of the filter plate 61.

[0041] When the filter plate 61 rises to contact the bottom surface of the frame 311 , the salvaging net 31 rotates to scrape off the impurities salvaged on the upper surface of the filter plate 61 .

[0042] A magnet ring 7 is fixedly connected to the inner wall of the through hole 611 in the filter plate 61, a sealing block 8 is installed on the upper end of the stirring shaft 21, a magnet ring 2 9 is fixedly connected to the bottom surface of the sealing block 8, and a fixing groove 81 is opened on the bottom surface of the sealing block 8, the fixing groove 81 is located in the middle of the magnet ring 9, a magnet gasket 1 811 is fixedly connected to the bottom wall of the fixing groove 81, a magnet gasket 2 24 is fixedly connected to the upper end surface of the stirring shaft 21, the upper end of the stirring shaft 21 is plugged into the fixing groove 81, and the magnet gasket 1 811 and the magnet gasket 2 24 are adsorbed on each other.

[0043] The filter plate 61 rises and drives the upper end of the stirring shaft 21 to be plugged into the through hole 611. Then, when the through hole 611 is separated from the upper end of the stirring shaft 21, the blocking block 8 is separated from the stirring shaft 21, and the first magnet ring 7 and the second magnet ring 9 are attracted to each other, and the outer wall of the blocking block 8 contacts the inner wall of the through hole 611. In this way, the blocking block 8 blocks the through hole 611, thereby reducing the occurrence of impurities passing through the through hole 611 and falling downward when the salvage net 31 scrapes off the impurities on the filter plate 61.

[0044] The implementation principle of an industrial sewage treatment device in an embodiment of the present application is as follows: when sewage needs to be treated, a reagent is put into the clean water tank 1, and sewage is pumped into the clean water tank 1. The stirring mechanism 2 is started to stir the sewage and the reagent, so that the sewage reacts with the reagent and produces floating impurities. The floating impurities are then salvaged by the salvaging mechanism 3, and at the same time, the driving component 62 is started to drive the filter plate 61 to rise, and the filter plate 61 rises to salvage the impurities mixed in the sewage. When the filter plate 61 rises and contacts the salvage net 31 in the salvage mechanism 3, the salvage net 31 salvages the impurities on the filter plate 61. The discharge port 15 is opened by adjusting the blocking mechanism, and the salvage net 31 can be replaced at the discharge port 15 at this time.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An industrial wastewater treatment device, characterized in that: The invention comprises a clean water tank (1), wherein the clean water tank (1) is divided into a salvage area (11) and a reaction area (12) arranged in an upper and lower manner, wherein the reaction area (12) is provided with a stirring mechanism (2), and the salvage area (11) is provided with a salvage mechanism (3), wherein the salvage mechanism (3) comprises a salvage net (31) and a salvage motor (32) for driving the salvage net (31) to rotate, and wherein the clean water tank (1) is further provided with an auxiliary filtering mechanism (6), wherein the auxiliary filtering mechanism (6) comprises a filter plate (61) arranged transversely, wherein the filter plate (61) is provided with a through hole (611) for the salvage mechanism (3) to pass through, and wherein the filter plate (61) is connected with a driving component (62) for driving the filter plate (61) to rise and fall, and when the filter plate (61) rises to contact the bottom end of the salvage net (31), the filter plate (61) stops rising.

2. An industrial wastewater treatment device according to claim 1, characterized in that: The structure of the stirrer comprises a stirring shaft (21) fixedly connected to the inner bottom wall of the clean water tank (1); a stirring motor (22) for driving the stirring shaft (21) to rotate is fixedly connected to the outer bottom wall of the clean water tank (1); and a plurality of stirring rods (23) are installed on the side wall of the stirring shaft (21).

3. An industrial wastewater treatment device according to claim 2, characterized in that: The side wall of the stirring shaft (21) is provided with a plurality of vertically arranged mounting grooves (211), one mounting groove (211) corresponding to one stirring rod (23), one end of the stirring rod (23) being hinged to the bottom wall of the mounting groove (211), and a torsion spring being installed at each hinge, one end of the torsion spring being fixedly connected to the bottom wall of the mounting groove (211), and the other end being fixedly connected to the stirring rod (23), when the torsion spring is in a normal state, the stirring shaft (21) is arranged perpendicular to the stirring rod (23), the through hole (611) is plugged into the stirring shaft (21), and the diameter of the through hole (611) is larger than the diameter of the stirring shaft (21).

4. An industrial wastewater treatment device according to claim 3, characterized in that: The driving assembly (62) comprises a guide column (621) fixedly connected to the inner bottom wall of the clean water tank (1), and a screw rod (622) rotatable with the inner bottom wall of the clean water tank (1), the screw rod (622) being threadedly connected to the filter plate (61), the guide column (621) being slidably connected to the filter plate (61), a fixed block (623) and a second fixed block (624) being fixedly connected to the inner side wall of the clean water tank (1) near the salvage area (11), one end of the screw rod (622) being fixedly connected to the fixed block (623), one end of the guide column (621) being fixedly connected to the second fixed block (624), and a reciprocating motor (625) for driving the screw rod to reciprocate is fixedly connected to the outer bottom wall of the clean water tank (1).

5. An industrial wastewater treatment device according to claim 4, characterized in that: The upper surface of the filter plate (61) is provided with a first groove (612) and a second groove (613); when the filter plate (61) rises to contact the bottom end of the salvage net (31), the first fixed block (623) is plugged into the first groove (612), and the second fixed block (624) is plugged into the second groove (613); and the upper surfaces of the first fixed block (623) and the second fixed block (624) are both flush with the upper surface of the filter plate (61).

6. An industrial wastewater treatment device according to claim 1, characterized in that: The salvage motor (32) is fixedly connected to the upper surface of the outer side of the clean water tank (1); the upper surface of the inner side of the clean water tank (1) is rotatably connected to a fixed rotating shaft (33) coaxial with the output shaft of the salvage motor (32); a mounting plate (34) is fixedly connected to the side of the rotating shaft (33); the mounting plate (34) is detachably connected to the salvage net (31); a discharge port (15) is provided on one side of the clean water tank (1); a blocking component (4) for blocking or opening the discharge port (15) is connected to the discharge port; a discharge slide rail (5) is fixedly connected to the discharge port (15); the discharge slide rail (5) gradually tilts downward in a direction away from the discharge port (15).

7. An industrial wastewater treatment device according to claim 6, characterized in that: A long groove (341) is formed on a side of the mounting plate (34) away from the rotating shaft (33); an electromagnet (36) is fixedly connected to the bottom wall of the long groove (341); the salvaging net (31) comprises a frame (311) and a cover net (312) fixedly connected to the frame (311); an iron rod (35) plugged into the long groove (341) is fixedly connected to one end of the frame (311); when the electromagnet (36) is energized, the iron rod (35) is fastened and adsorbed on the mounting plate (34).

8. An industrial wastewater treatment device according to claim 6, characterized in that: The blocking assembly (4) comprises an arc-shaped plate (41) slidably connected to the outer wall of the clean water tank (1), the arc-shaped plate (41) blocks the discharge port (15), a side of the arc-shaped plate (41) facing away from the clean water tank (1) is provided with a plurality of convex teeth (42), the convex teeth (42) are meshed with gears (44), and a blocking motor (43) is fixedly connected to the outer wall of the clean water tank (1), and an output shaft of the blocking motor (43) is coaxially fixed with the gear (44).

9. An industrial wastewater treatment device according to claim 3, characterized in that: A first magnet ring (7) is fixedly connected to the inner wall of the through hole (611); a blocking block (8) is installed at the upper end of the stirring shaft (21); a fixing groove (81) is provided on the bottom surface of the blocking block (8); a second magnet ring (9) is fixedly connected to the bottom surface of the blocking block (8); a first magnet gasket (811) is fixedly connected to the bottom wall of the fixing groove (81); a second magnet gasket (24) adsorbed to the first magnet gasket (811) is fixedly connected to the upper end surface of the stirring shaft (21); when the filter plate (61) rises to drive the through hole to separate from the upper end of the stirring shaft (21), the blocking block (8) separates from the stirring shaft (21), the first magnet ring (7) and the second magnet ring (9) adsorb to each other, and the outer wall of the blocking block (8) contacts the inner wall of the through hole (611).

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