Sewage treatment device and process based on chemical production

Abstract

The invention relates to the technical field of sewage treatment, and discloses a sewage treatment device and process based on chemical production, the sewage treatment device based on chemical production comprises a treatment box, an outer frame is arranged on one side of the top of the treatment box, a filter screen is arranged on the inner side of the outer frame, and a slag containing box is arranged on the side wall of the treatment box; the device further comprises a salvaging and cleaning part arranged on the treatment box, and the salvaging and cleaning part comprises a pushing assembly arranged on the outer frame. According to the sewage treatment device based on chemical production, linkage synchronization of fishing and scraping actions is achieved through the transmission assembly, additional driving equipment does not need to be additionally arranged, and the energy utilization efficiency is greatly improved. When the first rotating shaft rotates, the reciprocating lead screw is driven to operate through the belt, the push rod is driven to automatically control the scraping plate to be separated and reset, the number of power sources is reduced, and equipment energy consumption and manufacturing cost are reduced. Meanwhile, mechanical fault points are reduced through a linkage structure, the overall operation stability of the device is improved, and the service life of equipment is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewage treatment, and particularly relates to a sewage treatment device and process based on chemical production. BACKGROUND

[0002] The production process of the chemical industry produces high-concentration and complex-component wastewater, which contains organic matter, heavy metals, acid and alkali, toxic pollutants, etc. If directly discharged, it will seriously pollute water bodies, soil, destroy the ecological balance and threaten the health of humans and animals. However, the wastewater produced in the production process of the chemical industry needs to be treated by a sewage treatment device. The existing sewage treatment device still has the following defects in use: In the process of chemical sewage treatment, a large amount of scum is generated on the water surface of facilities such as a flotation tank and a sedimentation tank. The scum is mainly composed of incompletely degraded organic matter, suspended solids and flocculation bodies and needs to be scraped off by a scraper device and then disposed. On the one hand, the scraping by the scraper is not thorough. Due to the insufficient adhesion of the scraper to the side wall of the tank, gaps are formed during the scraping of the scum, and part of the scum flows back to the water body from the two sides and the bottom of the scraper. The residual scum cannot be effectively collected, which not only pollutes the treated water again but also increases the load of subsequent filtering, biochemical treatment and other processes, resulting in an increase in the overall treatment cost. On the other hand, the adhesion of the scraper material to the scum is strong, and a large amount of scum is adhered to the surface of the scraper after the scraping operation, which is difficult to fall off naturally. In order to ensure the subsequent scraping effect, the workers need to stop the device regularly and clean the scraper by artificial flushing and scraping, which not only consumes a lot of manpower and time but also interrupts the continuous operation of the sewage treatment, reduces the overall treatment efficiency of the device and has the safety risk of contacting the toxic and harmful scum during the artificial cleaning process. SUMMARY

[0003] In view of the problems of the existing technology that the scraping by the scraper is not thorough and the scum is easily adhered to the surface of the scraper and needs to be cleaned manually, a sewage treatment device and process based on chemical production are provided.

[0004] The present application provides a sewage treatment device based on chemical production, which aims to solve the problem that the scraping by the scraper is not thorough, and the scum cannot be effectively collected, which not only pollutes the treated water again but also increases the load of subsequent filtering, biochemical treatment and other processes.

[0005] The technical scheme of the present application is as follows: a sewage treatment device based on chemical production, comprising a treatment box, an outer frame is arranged on one side of the top of the treatment box, a filter screen is arranged on the inner side of the outer frame, a residue loading box is arranged on the side wall of the treatment box, and a fishing and cleaning component is arranged on the treatment box. The fishing and cleaning component comprises a pushing assembly arranged on the outer frame, and a driving assembly, a scraping assembly and a torsion assembly are arranged on the treatment box. The salvage cleaning component is used for salvaging and cleaning the dregs in the treatment box; The pushing assembly comprises a first sliding groove arranged on one side of the outer frame, a second sliding groove arranged on the other side of the outer frame, a threaded rod arranged in the first sliding groove, a round rod arranged in the second sliding groove, a first sliding block arranged in the first sliding groove and threadedly connected with the outer side of the threaded rod, a second sliding block arranged in the second sliding groove and slidingly connected with the outer side of the round rod, a groove arranged on the outer frame, a first motor arranged in the inner side of the groove, a first motor output shaft fixedly connected with the threaded rod, a first rotating shaft arranged on the second sliding block and rotationally connected with the treatment box.

[0006] Further, the driving assembly comprises a second rotating shaft arranged on the first sliding block and rotationally connected with the treatment box, and the treatment box is further provided with a second motor, and a second motor output shaft fixedly connected with the second rotating shaft.

[0007] Further, the scraping assembly comprises an inner plate arranged on the treatment box, a scraping plate arranged on the inner plate, a cavity arranged on the scraping plate, the inner plate slidingly connected with the inner side of the cavity, a reset spring arranged between the inner plate and the inner wall of the cavity, and the scraping plate abutting against the filter screen.

[0008] Further, the torsion assembly comprises a first connecting shaft arranged on the treatment box and fixedly connected with the inner plate, and a torsion spring arranged between the first connecting shaft and the treatment box and sleeved on the first connecting shaft.

[0009] Further, the salvage cleaning component further comprises a rotating assembly arranged on the treatment box, a moving assembly arranged on the rotating assembly, and a transmission assembly arranged on the moving assembly. The rotating assembly comprises a second connecting shaft arranged on the treatment box, one end of the second connecting shaft fixedly connected with the inner plate, the other end of the second connecting shaft provided with a rotating column, the rotating column provided with an arc-shaped groove, the rotating column provided with an inclined groove in communication with the arc-shaped groove, and the rotating column provided with a straight groove in communication with the arc-shaped groove and the inclined groove respectively, and the treatment box further provided with a pushing rod slidingly connected with the inner sides of the arc-shaped groove, the inclined groove and the straight groove.

[0010] Further, the moving assembly comprises a light rod arranged on the treatment box and provided with a nut, and the pushing rod fixedly connected with the nut.

[0011] Further, the transmission assembly comprises a reciprocating screw rod arranged on the treatment box, the nut threadedly connected with the reciprocating screw rod, and the first rotating shaft drivingly connected with the reciprocating screw rod through a belt.

[0012] Further, a slag cleaning assembly is arranged on the slag loading box, and the slag cleaning assembly comprises a slag cleaning opening arranged on the slag loading box and provided with a sealing plate.

[0013] Another object of the present invention is to provide a wastewater treatment process based on chemical production, comprising the following steps: S1: The wastewater generated from chemical production is introduced into the treatment tank, where it is allowed to settle and undergo initial sedimentation. During this process, suspended impurities in the wastewater sink to the bottom, while light scum floats to the surface and accumulates, laying the foundation for subsequent dredging operations. S2: Start the first motor of the pusher component, drive the threaded rod to rotate, drive the first slider to slide along the first slide groove, and the second slider to slide stably along the round rod in the second slide groove, so that the outer frame sinks to the bottom of the inner side of the processing box in the opposite direction to the slider, and completes the position adjustment before scum retrieval. S3: Use the filter screen to remove the floating scum from the top of the treatment box, so that all the floating scum adheres to the filter screen. Then control the outer frame to move the filter screen downwards, and scrape off the floating scum under the action of the scraping component. The scraped-off floating scum falls directly into the scum box. S4: Enables the outer frame and filter screen to cycle through sinking, retrieval, floating, and scraping actions, achieving continuous cleaning of scum.

[0014] Furthermore, in step S3, the outer frame and filter screen are rotated 180 degrees by a drive component.

[0015] The beneficial effects of this invention are: The retrieval and scraping actions are synchronized through a transmission assembly, eliminating the need for additional drive equipment and significantly improving energy efficiency. When the first rotating shaft rotates, a belt drives a reciprocating screw, which in turn drives a push rod to automatically control the separation and repositioning of the scraping plate. This reduces the number of power sources, lowering energy consumption and manufacturing costs. Simultaneously, the linkage structure reduces mechanical failure points, improves overall operational stability, and extends equipment lifespan.

[0016] The sludge removal assembly employs a combination design of a sealing plate and a locking mechanism, allowing for quick opening of the sludge removal port to complete the removal of floating sludge, avoiding direct manual contact with toxic and harmful sludge; it also boasts excellent sealing performance, preventing leakage of wastewater or harmful gases during treatment. The entire sludge removal process requires no downtime, ensuring continuous operation of wastewater treatment while reducing occupational health risks for workers.

[0017] With strong adaptability and thorough scum removal, it can handle chemical wastewater of different water qualities. The torsion spring of the torsion component and the return spring of the scraping component form a double elastic fit structure, ensuring that the scraping plate is always in close contact with the filter screen, and can efficiently scrape off scum regardless of its thickness; the multi-channel design of the rotating component makes the separation and repositioning of the scraping plate precise and controllable, avoiding the accumulation of scum residue and improving the stability of the effluent water quality. Attached Figure Description

[0018] Figure 1 This is a first-view three-dimensional structural diagram of the wastewater treatment device based on chemical production according to the present invention; Figure 2 This is a second-view three-dimensional structural diagram of the wastewater treatment device based on chemical production according to the present invention; Figure 3 This is a schematic diagram of the retrieval and cleaning component structure of the wastewater treatment device based on chemical production according to the present invention; Figure 4 This is a schematic diagram of the component structure of the wastewater treatment device based on chemical production according to the present invention; Figure 5 This is a cross-sectional view of the scraping component of the wastewater treatment device based on chemical production according to the present invention. Figure 6 This is a schematic diagram of the torsion component structure of the wastewater treatment device based on chemical production according to the present invention; Figure 7 This is a schematic diagram of the rotating component, moving component, and transmission component of the wastewater treatment device based on chemical production according to the present invention. Figure 8 This is an exploded structural diagram of the rotating component, moving component, and transmission component of the wastewater treatment device based on chemical production according to the present invention. Figure 9 This is a schematic diagram of the rotating column structure of the wastewater treatment device based on chemical production according to the present invention; Figure 10 This is a schematic diagram of the sludge removal component of the wastewater treatment device based on chemical production according to the present invention.

[0019] In the picture: 1. Processing box; 11. Outer frame; 12. Filter screen; 13. Slag loading box; 2. Pushing assembly; 21. First chute; 22. Second chute; 23. Threaded rod; 24. Round rod; 25. First slider; 26. Second slider; 27. First motor; 28. First rotating shaft; 3. Drive assembly; 31. Second rotating shaft; 32. Second motor; 4. Scraping assembly; 41. Inner plate; 42. Scraping plate; 43. Return spring; 5. Torque assembly; 51. First connecting shaft; 52. Torsion spring; 6. Rotating assembly; 61. Second connecting shaft; 62. Rotating column; 63. Arc groove; 64. Inclined groove; 65. Straight groove; 66. Push rod; 7. Moving assembly; 71. Smooth rod; 72. Nut; 8. Transmission assembly; 81. Reciprocating screw; 82. Belt; 9. Slag cleaning assembly; 91. Slag cleaning port; 92. Sealing plate. Detailed Implementation

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0021] Example 1, referring to Figures 1-6This invention provides a wastewater treatment device based on chemical production, comprising a treatment tank 1, an outer frame 11 movably connected to one side of the top of the treatment tank 1, a filter screen 12 fixedly connected to the inner side of the outer frame 11, a slag box 13 fixedly connected to the side wall of the treatment tank 1, and a retrieval and cleaning component installed on the treatment tank 1. The retrieval and cleaning component includes a pushing assembly 2 installed on the outer frame 11, and a driving assembly 3, a scraping assembly 4, and a torque assembly 5 installed on the treatment tank 1. The retrieval and cleaning component is used to retrieve and clean the slag inside the treatment tank 1. The pushing assembly 2 includes a first chute 21 opened on one side of the outer frame 11. On the other side, a second slide groove 22 is provided. A threaded rod 23 is rotatably connected to the inner side of the first slide groove 21. A round rod 24 is fixedly connected to the inner side of the second slide groove 22. A first slider 25 is slidably connected to the inner side of the first slide groove 21. The first slider 25 is threadedly connected to the outer side of the threaded rod 23. A second slider 26 is slidably connected to the inner side of the second slide groove 22. The second slider 26 is slidably connected to the outer side of the round rod 24. A groove is also provided on the outer frame 11. A first motor 27 is fixedly connected to the inner side of the groove. The output shaft of the first motor 27 is fixedly connected to the threaded rod 23. A first rotating shaft 28 is fixedly connected to the second slider 26. The first rotating shaft 28 is rotatably connected to the processing box 1.

[0022] Specifically, the wastewater first enters treatment tank 1, where sedimentation occurs, producing scum, such as... Figure 1As shown, the outer frame 11 is located at the top of the processing box 1. Under the action of the pushing component 2, the outer frame 11 can sink to the bottom of the inner side of the processing box 1. Since the outer frame 11 is movably connected to the processing box 1, the outer frame 11 can rotate inside the processing box 1, driving the filter screen 12 to rotate. When the filter screen 12 rotates, the scum on the top of the processing box 1 is scooped up, so that all the scum stays on the filter screen 12. Under the action of the scraping component 4, the scum on the filter screen 12 is scraped off, so that the scum enters the scum box 13, completing the cleaning of the scum. The first motor 27 starts, driving the threaded rod 23 to rotate, causing the first slider 25 to slide inside the first groove 21 and the second slider 26 to slide inside the second groove 22. Under the action of the round rod 24, the second slider 26 slides stably inside the second groove 22. Under the action of the first rotating shaft 28, the second slider 26 is always located on one side of the processing box 1 and remains stationary. When the second slider 26 slides inside the second groove 22, the outer frame 11 slides in the opposite direction relative to the second slider 26. That is, the threaded rod 23 drives the first slider 25 to slide inside the second groove 21. When block 25 slides upward inside the first chute 21, the outer frame 11 slides downward as a whole. When the filter screen 12 rotates to the top of the processing box 1 and is perpendicular to the top of the processing box 1, the outer frame 11 can drive the filter screen 12 to move downward. Under the action of the scraping component 4, the scum is scraped off. When the outer frame 11 moves to the bottom inside the processing box 1, the outer frame 11 can continue to rotate. Under the action of the filter screen 12, the scum is retrieved. When the outer frame 11 rotates 180 degrees and is perpendicular to the top of the processing box 1, the scum is scraped off again. This process is repeated to retrieve and clean the scum. This completely solves the problem of scum flowing back from both sides and the bottom of the scraper, and the scum cleaning is more thorough. No manual intervention is required in the scraping process, and scum adhesion and residue are avoided, reducing the frequency of manual cleaning, ensuring continuous operation of the device, and improving processing efficiency.

[0023] Reference Figure 3 and Figure 4 The drive assembly 3 includes a second rotating shaft 31 fixedly connected to the first slider 25. The second rotating shaft 31 is rotatably connected to the processing box 1. A second motor 32 is also fixedly connected to the processing box 1. The output shaft of the second motor 32 is fixedly connected to the second rotating shaft 31.

[0024] Specifically, the second motor 32 is started, which drives the second rotating shaft 31 to rotate 180 degrees, which in turn drives the first slider 25 to rotate 180 degrees. Since the first slider 25 is slidably connected to the first sliding groove 21, under the action of the first rotating shaft 28, the outer frame 11 can rotate 180 degrees.

[0025] Reference Figure 5The scraping assembly 4 includes an inner plate 41 rotatably connected to the processing box 1, a scraping plate 42 slidably connected to the inner plate 41, a cavity provided on the scraping plate 42, the inner plate 41 slidably connected to the inner side of the cavity, a return spring 43 fixedly connected between the inner plate 41 and the inner wall of the cavity, and the scraping plate 42 abutting against the filter screen 12.

[0026] Specifically, the processing box 1 is equipped with a stop block, and the inner plate 41 abuts against the stop block. Under the action of the return spring 43, the scraper 42 is always in contact with the filter screen 12, ensuring that when the filter screen 12 moves downward, the scraper 42 scrapes off the floating scum on one side of the filter screen 12. When the outer frame 11 rotates, because the scraper 42 abuts against the filter screen 12, the stop block prevents the scraper 42 from deflecting downward. The outer frame 11 pushes the scraper 42 to one side of the inner plate 41, squeezing the return spring 43, ensuring that the outer frame 11 can rotate normally without obstruction. When the outer frame 11 finishes rotating, the return spring 43 returns to its original position, so that the scraper 42 abuts against the other side of the filter screen 12.

[0027] Example 2, refer to Figure 6 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the torque assembly 5 includes a first connecting shaft 51 rotatably connected to the processing box 1. The first connecting shaft 51 is fixedly connected to the inner plate 41. A torsion spring 52 is fixedly connected between the first connecting shaft 51 and the processing box 1. The torsion spring 52 is sleeved on the first connecting shaft 51.

[0028] Specifically, under the action of the torsion spring 52, the first connecting shaft 51 causes the inner plate 41 to tilt towards the filter screen 12, so that the scraper 42 abuts against the filter screen 12, ensuring the normal operation of the scraping work. When the first connecting shaft 51 rotates clockwise, it drives the inner plate 41 and the scraper 42 to rotate, so that the scraper 42 moves away from the filter screen 12, making it easier for the scum scraped off the scraper 42 to fall into the scum box 13, so that the scraper 42 can operate continuously, avoiding the need for manual cleaning of a large amount of scum attached to the scraper 42.

[0029] Reference Figures 7-9 The salvage and cleaning components also include a rotating assembly 6 installed on the processing box 1, a moving assembly 7 installed on the rotating assembly 6, and a transmission assembly 8 installed on the moving assembly 7. The rotating assembly 6 includes a second connecting shaft 61 rotatably connected to the processing box 1. One end of the second connecting shaft 61 is fixedly connected to the inner plate 41, and the other end of the second connecting shaft 61 is fixedly connected to a rotating column 62. An arc-shaped groove 63 is provided on the rotating column 62, and an inclined groove 64 is provided on the rotating column 62 in communication with the arc-shaped groove 63. A straight groove 65 is provided on the rotating column 62 in communication with the arc-shaped groove 63 and the inclined groove 64, respectively. A push rod 66 is also slidably connected to the processing box 1. The push rod 66 is slidably connected to the inner side of the arc-shaped groove 63, the inclined groove 64 and the straight groove 65, respectively.

[0030] Specifically, when the push rod 66 slides away from the treatment box 1, one end of it first slides into the inner side of the inclined groove 64. Under the action of the inclined groove 64, the rotating column 62 rotates, driving the second connecting shaft 61 to rotate, causing the inner plate 41 to rotate, and the torsion spring 52 to be twisted, causing the scraper plate 42 to separate from the filter screen 12, so that the scum on the scraper plate 42 falls into the slag box 13. When the push rod 66 slides close to the side of the treatment box 1, the push rod 66 will enter the straight groove 65. Under the action of the straight groove 65, the rotating column 62 remains stationary, so that the scraper plate 42 has enough time to allow the scum to fall into the slag box 13. When the push rod 66 moves to the end of the straight groove 65, it enters the inner side of the arc groove 63. Under the action of the torsion spring 52, the rotating column 62 rotates in the opposite direction to reset, so that the scraper plate 42 re-abuts the filter screen 12, and the push rod 66 re-enters the inclined groove 64.

[0031] Reference Figure 7 and Figure 8 The moving component 7 includes a light rod 71 fixedly connected to the processing box 1, a nut 72 slidably connected to the light rod 71, and a push rod 66 fixedly connected to the nut 72.

[0032] Specifically, the nut 72 slides away from the processing box 1 on the smooth rod 71, causing the push rod 66 to move away from the processing box 1. The nut 72 also slides closer to the processing box 1 on the smooth rod 71, causing the push rod 66 to move closer to the processing box 1. The rest of the structure is the same as that in Embodiment 1.

[0033] Example 3, referring to Figure 7 and Figure 8 This is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that the transmission assembly 8 includes a reciprocating screw 81 rotatably connected to the processing box 1, a nut 72 threadedly connected to the reciprocating screw 81, and a first rotating shaft 28 connected to the reciprocating screw 81 via a belt 82.

[0034] Specifically, when the first rotating shaft 28 rotates, it drives the reciprocating screw 81 to rotate via the belt 82. Under the action of the guide rod 71, the nut 72 slides back and forth on the reciprocating screw 81.

[0035] Reference Figure 2 and Figure 3 It also includes a slag cleaning assembly 9 installed on the slag loading box 13. The slag cleaning assembly 9 includes a slag cleaning port 91 opened on the slag loading box 13, and a sealing plate 92 is snapped into the slag cleaning port 91.

[0036] Specifically, the sealing plate 92 is locked to the slag box 13 by a locking mechanism. The locking mechanism is opened, and the sealing plate 92 is pulled out from the slag cleaning port 91 to remove the floating slag from the slag box 13. Then, the sealing plate 92 is inserted back into the slag cleaning port 91 to seal the slag box 13. Finally, the locking mechanism is tightened to fix the sealing plate 92. The remaining structure is the same as in Example 2.

[0037] Based on embodiments 1-3, the working principle of the present invention is as follows: After sewage enters the treatment tank 1, sedimentation produces scum. When the scum removal and cleaning component is activated, the first motor 27 drives the threaded rod 23 to rotate, causing the first slider 25 to slide along the first slide groove 21. At the same time, the second slider 26 slides stably along the round rod 24 in the second slide groove 22. Since the second slider 26 is fixed to the treatment tank 1 through the first rotating shaft 28, the outer frame 11 moves up and down with the slider. In conjunction with the second motor 32 driving the second rotating shaft 31 to rotate, the outer frame 11 and the inner filter screen 12 rotate 180 degrees, completing the scum removal. During the scraping stage, the scraping plate 42 of the scraping component 4 is always in contact with the filter screen 12 under the action of the return spring 43. When the filter screen 12 moves downward, the scraping plate 42 scrapes off the scum on its surface. The torsion spring 52 of the torsion component 5 drives the inner plate 41 to tilt through the first connecting shaft 51, ensuring the fit of the scraping plate 42. The rotating component 6 is linked with the transmission component 8. When the first rotating shaft 28 rotates, it drives the reciprocating screw 81 to rotate via the belt 82, causing the nut 72 to slide back and forth along the smooth rod 71. This drives the push rod 66 to slide within the arc-shaped groove 63, inclined groove 64, and straight groove 65 of the rotating column 62, driving the inner plate 41 to rotate. This achieves the separation and repositioning of the scraping plate 42 and the filter screen 12, ensuring that the scum falls smoothly into the scum collection box 13. During cleaning, the sealing plate 92 of the scum collection box 13 cleaning port 91 is opened to quickly clean up the concentrated scum. After cleaning, the sealing plate 92 is reset and locked to ensure the device's airtightness. The entire process achieves a cyclical operation of scum retrieval, scraping, and collection through component linkage, requiring minimal manual intervention.

[0038] Example 4, refer to Figures 1-10 The fourth embodiment of the present invention provides a wastewater treatment process based on chemical production, comprising the following steps: S1: Wastewater generated from chemical production is introduced into treatment tank 1, where it is allowed to settle and undergo initial sedimentation. During this process, suspended impurities in the wastewater sink to the bottom, while light scum floats to the surface and accumulates, laying the foundation for subsequent dredging operations.

[0039] S2: Start the first motor 27 of the push assembly 2, drive the threaded rod 23 to rotate, drive the first slider 25 to slide along the first slide groove 21, and the second slider 26 to slide stably along the round rod 24 in the second slide groove 22, so that the outer frame 11 sinks to the bottom of the inner side of the processing box 1 in the opposite direction to the slider, and complete the position adjustment before scum retrieval.

[0040] S3: Drive the outer frame 11 and filter screen 12 to rotate 180 degrees through the drive component 3. Use the filter screen 12 to remove the floating scum on the top of the treatment box 1, so that all the floating scum is attached to the filter screen 12. Then control the outer frame 11 to move the filter screen 12 downward. Under the action of the scraping component 4, the floating scum is scraped off and the scraped scum falls directly into the scum box 13.

[0041] S4: The outer frame 11 and the filter screen 12 cycle through sinking, retrieval, floating, and scraping actions to achieve continuous cleaning of scum.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A wastewater treatment device based on chemical production, comprising a treatment tank (1), one side of the top of the treatment tank (1) is provided with an outer frame (11), the inner side of the outer frame (11) is provided with a filter screen (12), a slag loading tank (13) is arranged on the side wall of the treatment tank (1), characterized in that, The fishing cleaning part is arranged on the processing box (1); The fishing cleaning part comprises a pushing assembly (2) arranged on an outer frame (11), and the processing box (1) is provided with a driving assembly (3), a scraping assembly (4) and a torsion assembly (5); The fishing cleaning part is used for fishing and cleaning dregs in the processing box (1); The pushing assembly (2) comprises a first sliding groove (21) arranged on one side of the outer frame (11), a second sliding groove (22) arranged on the other side of the outer frame (11), a threaded rod (23) arranged in the first sliding groove (21), a round rod (24) arranged in the second sliding groove (22), a first sliding block (25) arranged in the first sliding groove (21), the first sliding block (25) being threadedly connected with the outer side of the threaded rod (23), a second sliding block (26) arranged in the second sliding groove (22), the second sliding block (26) being slidingly connected with the outer side of the round rod (24), a recess arranged on the outer frame (11), a first motor (27) arranged in the recess, the output shaft of the first motor (27) being fixedly connected with the threaded rod (23), and a first rotating shaft (28) arranged on the second sliding block (26) and rotatingly connected with the processing box (1).

2. The chemical production-based wastewater treatment apparatus according to claim 1, characterized by, The driving assembly (3) comprises a second rotating shaft (31) arranged on the first sliding block (25) and rotatingly connected with the processing box (1), and the processing box (1) is further provided with a second motor (32), and the output shaft of the second motor (32) is fixedly connected with the second rotating shaft (31).

3. The chemical production-based wastewater treatment apparatus according to claim 1, characterized by, The scraping assembly (4) comprises an inner plate (41) arranged on the processing box (1), a scraping plate (42) arranged on the inner plate (41), a cavity arranged on the scraping plate (42), the inner plate (41) being slidingly connected with the inner side of the cavity, a reset spring (43) arranged between the inner plate (41) and the inner wall of the cavity, and the scraping plate (42) being abutted with the filter screen (12).

4. The chemical production-based wastewater treatment apparatus according to claim 3, wherein The torsion assembly (5) comprises a first connecting shaft (51) arranged on the processing box (1) and fixedly connected with the inner plate (41), a torsion spring (52) arranged between the first connecting shaft (51) and the processing box (1), and the torsion spring (52) being sleeved on the first connecting shaft (51).

5. The chemical production-based wastewater treatment apparatus according to claim 3, wherein The fishing cleaning part further comprises a rotating assembly (6) arranged on the processing box (1), a moving assembly (7) arranged on the rotating assembly (6), and a transmission assembly (8) arranged on the moving assembly (7); The rotating assembly (6) comprises a second connecting shaft (61) arranged on the processing box (1), one end of the second connecting shaft (61) being fixedly connected with the inner plate (41), the other end of the second connecting shaft (61) being provided with a rotating column (62), the rotating column (62) being provided with an arc-shaped groove (63), the rotating column (62) being provided with an inclined groove (64) in communication with the arc-shaped groove (63), the rotating column (62) being provided with a straight groove (65) in communication with the arc-shaped groove (63) and the inclined groove (64) respectively, and the processing box (1) being further provided with a pushing rod (66) slidingly connected with the inner sides of the arc-shaped groove (63), the inclined groove (64) and the straight groove (65).

6. The chemical production-based wastewater treatment apparatus according to claim 5, wherein The moving assembly (7) comprises an optical rod (71) arranged on the treatment box (1), the optical rod (71) is provided with a nut (72), and the pushing rod (66) is fixedly connected with the nut (72).

7. The chemical production-based wastewater treatment apparatus according to claim 6, wherein The transmission assembly (8) comprises a reciprocating screw rod (81) arranged on the treatment box (1), the nut (72) is in threaded connection with the reciprocating screw rod (81), and the first rotating shaft (28) is in transmission connection with the reciprocating screw rod (81) through a belt (82).

8. The chemical production-based wastewater treatment apparatus according to claim 1, wherein The slag removal assembly (9) comprises a slag removal opening (91) arranged on the slag loading box (13), and the slag removal opening (91) is provided with a sealing plate (92).

9. A wastewater treatment process based on chemical production, applied to the wastewater treatment plant based on chemical production according to any one of claims 1 to 8, characterized in that, The method comprises the following steps: S1: the wastewater generated in chemical production is introduced into the treatment box (1), so that the wastewater is statically deposited in the box to complete preliminary sedimentation, in the process, the suspended impurities in the wastewater sink, and the light dross floats to the water surface and is gathered, laying a foundation for subsequent salvage operation; S2: the first motor (27) of the pushing assembly (2) is started, the threaded rod (23) is driven to rotate, the first sliding block (25) is driven to slide along the first sliding groove (21), the second sliding block (26) is stably slid along the round rod (24) in the second sliding groove (22), the outer frame (11) is reversely sunk to the bottom of the inner side of the treatment box (1), and the position adjustment before the salvage of the dross is completed; S3: the dross on the top of the treatment box (1) is salvaged by using the filter screen (12), so that the dross is completely attached to the filter screen (12), then the outer frame (11) drives the filter screen (12) to move downwards, the dross is scraped off under the action of the scraping assembly (4), and the scraped dross directly falls into the slag loading box (13); S4: the outer frame (11) and the filter screen (12) are circulated to complete the sinking, salvage, floating and scraping actions, so that the dross is continuously cleaned.

10. The chemical production based wastewater treatment process according to claim 9, characterized in that, In S3, the outer frame (11) and the filter screen (12) are driven by the driving assembly (3) to rotate by 180 degrees.

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