An automatic cleaning device for sewage tanks

Abstract

This invention belongs to the field of wastewater treatment technology, specifically an automatic wastewater tank cleaning device, including an automatic wastewater cleaning tank. A first water tank is fixedly connected to one side of the automatic wastewater cleaning tank via a first connecting pipe. A second connecting pipe is fixedly connected to the side of the first water tank away from the automatic wastewater cleaning tank. A magnetizing device is provided in the middle of the second connecting pipe. The magnetizing device includes a first cylinder that rotatably penetrates the upper end of the second connecting pipe. Several first rectangular holes are provided around the first cylinder. A separation device is provided inside the first water tank. The separation device includes a first V-shaped plate and a second V-shaped plate fixedly connected inside the first water tank. Magnet plates are fixedly connected to both sides of the second V-shaped plate near the first V-shaped plate. The device magnetizes the impurities and activated carbon contained in the pharmaceutical wastewater. Subsequently, the magnet plates 262 adsorb the magnetized impurities and activated carbon in the pharmaceutical wastewater, thus solving the problem of the impact of impurities and activated carbon in the pharmaceutical wastewater on the automatic wastewater cleaning tank 1.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment technology, specifically an automatic cleaning device for wastewater tanks. Background Technology

[0002] With economic development, the environmental pollution caused by wastewater generated during industrial processes has become increasingly serious. How to efficiently treat wastewater and control water pollution has become a research hotspot in the field of environmental engineering. In particular, pharmaceutical wastewater usually contains complex organic matter, inorganic matter, heavy metal ions, etc., with a complex and variable composition. It requires the use of automatic wastewater cleaning devices to biodegrade pharmaceutical wastewater to meet discharge standards.

[0003] A patent with publication number CN210683522U discloses a sewage treatment device that filters sewage through multiple sewage tanks in stages. Pollutants are reduced layer by layer during the filtration process, which fully treats the sewage, filters out most pollutants, and reduces pollutant emissions. At the same time, the main pipe is connected to several branch pipes, so the sewage is evenly distributed and there is no problem of pollutants accumulating in one place, which ensures that pollutants are fully filtered.

[0004] In the aforementioned prior art, when treating pharmaceutical wastewater, it is necessary to discharge the wastewater into a sewage tank for subsequent biodegradation. Long-term treatment of pharmaceutical wastewater may lead to the accumulation of pollutants that are difficult to remove inside the sewage tank, requiring frequent maintenance of the sewage tank and potentially more frequent equipment inspections and repairs. Long-term operation and maintenance require a certain amount of cost investment.

[0005] Therefore, the present invention provides an automatic cleaning device for sewage tanks. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides an automatic sewage tank cleaning device, including an automatic sewage cleaning tank. A first water tank is fixedly connected to one side of the automatic sewage cleaning tank through a first connecting pipe. A second connecting pipe is fixedly connected to the side of the first water tank away from the automatic sewage cleaning tank. A magnetizing device is provided in the middle of the second connecting pipe. The magnetizing device includes a first cylinder that rotatably penetrates the upper end of the second connecting pipe. A plurality of first rectangular holes are provided around the first cylinder. A separation device is provided inside the first water tank. The separation device includes a first V-shaped plate and a second V-shaped plate fixedly connected inside the first water tank. The first V-shaped plate and the second V-shaped plate are arranged in parallel. A second rectangular hole is provided on both sides of the first V-shaped plate. A third rectangular hole is provided in the middle of the second V-shaped plate. Magnet plates are fixedly connected to both sides of the second V-shaped plate near the first V-shaped plate.

[0008] Preferably, the magnetization device further includes first arc-shaped blocks fixedly connected to the periphery of the first cylinder at positions corresponding to the first rectangular holes. The first arc-shaped blocks have a hollow structure inside and are connected to the interior of the first cylinder. The edges of the first arc-shaped blocks are provided with several circular holes.

[0009] Preferably, a ring is rotatably connected to the upper end of the first cylinder, and a second cylinder is fixedly connected to the upper end of the ring. The two sides of the ring are fixedly connected to the second connecting pipe through L-shaped blocks. A cylindrical rod is fixedly connected to the middle of the ring through a rectangular block. The cylindrical rod is located in the middle of the first cylinder. Rectangular strips are fixedly connected to the cylindrical rod around the position corresponding to the first rectangular hole. A second arc-shaped block is fixed to one side of the rectangular strip through a first spring. The second arc-shaped block can slide within the first rectangular hole.

[0010] Preferably, a gear ring is fixedly connected to the outer side of the upper end of the first cylinder, the gear ring meshes with a gear, the gear can rotate at the upper end of the second connecting pipe, the upper end of the gear is fixedly connected to the output end of a motor, and the motor is fixedly connected to the second connecting pipe through a motor mount.

[0011] Preferably, the side of the first V-shaped plate closest to the second V-shaped plate is provided with a plurality of first baffles.

[0012] Preferably, the first V-shaped plate has protrusions on both sides of its upper end, and the upper ends of the protrusions are fixedly connected to a V-shaped block. The lower ends of the V-shaped block are slidably provided with second scrapers on both sides, and the second scrapers can slide along one side of the magnet plate.

[0013] Preferably, the first V-shaped plate is provided with a sliding groove on the side near the protrusion, and a slider is slidably connected inside the sliding groove. A first scraper is rotatably connected to one side of the slider. A first cylindrical block is fixedly connected to the upper end of the second scraper. The first cylindrical block can slide inside the second cylindrical block. The first cylindrical block is fixedly connected to the inside of the second cylindrical block by a second spring. Slide rails are fixedly connected to both sides of the lower end of the V-shaped block. The second cylindrical block can slide inside the slide rails. A first collection box is fixedly connected to both sides of the first water pool.

[0014] Preferably, a filter device is provided at the end of the second connecting pipe away from the first water tank. The filter device includes a rectangular frame at one end of the second connecting pipe, a filter plate is installed inside the upper end of the rectangular frame, a third scraper is slidably connected to the upper end of the filter plate, a fourth rectangular hole is opened on one side of the upper end of the rectangular frame, the fourth rectangular hole is located at the upper end of the filter plate, and a second collection box is fixedly connected to one side of the rectangular frame at the position corresponding to the fourth rectangular hole.

[0015] Preferably, a sedimentation tank is fixedly connected to the lower end of the rectangular frame, and one side of the lower end of the sedimentation tank is fixedly connected to a second connecting pipe. An electric valve is provided on the side of the second connecting pipe near the sedimentation tank.

[0016] Preferably, the lower end of the rectangular frame is provided with a buffer component, the buffer component includes two first wave plates that are inclinedly arranged inside the rectangular frame, the two first wave plates are intersected and a gap is left between them, and a plurality of second wave plates are fixedly connected to the upper end of the first wave plates respectively, the second wave plates are arranged perpendicular to the first wave plates.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The automatic sewage tank cleaning device of the present invention magnetizes the impurities and activated carbon contained in pharmaceutical wastewater, and then the magnetized impurities and activated carbon in the pharmaceutical wastewater are adsorbed by a magnetic plate. This solves the problem of the impact of impurities and activated carbon in pharmaceutical wastewater on the automatic sewage cleaning tank, improves the efficiency and quality of wastewater treatment, reduces the operating cost and maintenance difficulty of the automatic sewage cleaning tank, and enhances the adaptability and stability of the system.

[0019] 2. The automatic cleaning device for sewage tanks of the present invention drives the first cylinder to rotate, and then the first rectangular hole slides along the inclined side of the second arc-shaped block until the second arc-shaped block slides completely out of the first rectangular hole. At this time, the dissolved magnetic chemical substances in the first cylinder can be thrown out from the first rectangular hole into the first arc-shaped block and discharged from the hole to mix with the pharmaceutical wastewater. When the first cylinder stops rotating, the second arc-shaped block slides to one side of the first rectangular hole, and the first spring releases its elastic force to push the second arc-shaped block into the first rectangular hole, which can prevent the dissolved magnetic chemical substances from flowing out of the first rectangular hole and at the same time prevent the pharmaceutical wastewater from entering the first cylinder. Attached Figure Description

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] Figure 1 This is a perspective view of Embodiment 1 of the present invention;

[0022] Figure 2 This is a schematic diagram showing the location of the second connecting pipe;

[0023] Figure 3 This is a schematic cross-sectional view of the second connecting pipe;

[0024] Figure 4 This is a schematic diagram of the cross-section of the first cylinder;

[0025] Figure 5 This is a schematic diagram of the separation device.

[0026] Figure 6 This is a schematic diagram of the cross-section of the first V-shaped plate;

[0027] Figure 7 This is a cross-sectional view of a rectangular frame;

[0028] In the diagram: 1. Automatic sewage cleaning tank; 11. First connecting pipe; 2. First water tank; 21. Second connecting pipe; 211. Electric valve; 22. First cylinder; 221. First rectangular hole; 222. Ring; 2221. L-shaped block; 223. Second cylinder; 224. Gear ring; 225. Gear; 226. Motor; 23. First arc-shaped block; 231. Circular hole; 24. Cylindrical rod; 241. Rectangular strip; 242. First spring; 243. Second arc-shaped block; 244. Rectangular block; 25. First V-shaped plate; 251. Second rectangular... 252. Hole; 2521. Protrusion; 2522. Slide groove; 253. V-shaped block; 254. Slide rail; 255. First scraper; 256. First baffle; 26. Second V-shaped plate; 261. Third rectangular hole; 262. Magnet plate; 27. Second scraper; 271. First cylindrical block; 272. Second spring; 273. Second cylindrical block; 28. First collection box; 3. Rectangular frame; 31. Filter plate; 32. Third scraper; 33. Fourth rectangular hole; 35. First wave plate; 351. Second wave plate; 36. Second collection box; 4. Sedimentation box. Detailed Implementation

[0029] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0030] Example 1

[0031] like Figures 1-5 As shown in the embodiment of the present invention, an automatic sewage tank cleaning device includes an automatic sewage cleaning tank 1. A first water tank 2 is fixedly connected to one side of the automatic sewage cleaning tank 1 via a first connecting pipe 11. A second connecting pipe 21 is fixedly connected to the side of the first water tank 2 away from the automatic sewage cleaning tank 1. A magnetizing device is provided in the middle of the second connecting pipe 21. The magnetizing device includes a first cylinder 22 that rotatably penetrates the upper end of the second connecting pipe 21. A plurality of first rectangular holes 221 are provided around the first cylinder 22. A separation device is provided inside the first water tank 2. The separation device includes a first V-shaped plate 25 and a second V-shaped plate 26 fixedly connected to the inside of the first water tank 2. The first V-shaped plate 25 and the second V-shaped plate 26 are arranged in parallel. A second rectangular hole 251 is provided on both sides of the first V-shaped plate 25. A third rectangular hole 261 is provided in the middle of the second V-shaped plate 26. Magnet plates 262 are fixedly connected to both sides of the second V-shaped plate 26 near the first V-shaped plate 25.

[0032] Specifically, the pharmaceutical industry generates wastewater during drug production. The industry typically has very strict requirements for wastewater treatment, needing to comply with environmental regulations and standards. Current technology generally employs biological treatment methods for pharmaceutical wastewater, utilizing microorganisms to decompose and transform organic matter into inorganic substances. Biological methods are divided into aerobic and anaerobic biological treatment. Aerobic biological treatment uses oxygen as an oxidant to oxidize and decompose the organic matter in the wastewater, while anaerobic biological treatment places the wastewater in an anaerobic environment and utilizes anaerobic microorganisms to decompose the organic matter. After being discharged into a treatment plant, pharmaceutical wastewater is treated using biological methods. Pharmaceutical wastewater typically contains complex organic matter. Pharmaceutical wastewater containing inorganic substances, heavy metal ions, etc., directly entering the automatic wastewater cleaning tank 1 for treatment will cause the accumulation of pollutants that are difficult to remove inside the automatic wastewater cleaning tank 1, thus affecting the performance and lifespan of the equipment. Regular maintenance and upkeep of the automatic wastewater cleaning tank 1 are necessary to ensure its long-term stable operation. Especially given the high requirements for pharmaceutical wastewater treatment, more frequent equipment inspections and repairs, as well as higher-level maintenance and upkeep, may be required. When using this device, the wastewater from the automatic wastewater cleaning tank 1 is first discharged into the first water tank 2 through the second connecting pipe 21. After entering the first water tank 2, the pharmaceutical wastewater will dissolve the chemical substances containing magnetic materials, and then be discharged into the second water tank 2 through the first cylinder 22. The interior of pipe 21 is mixed with pharmaceutical wastewater. The dissolving solution can be a metal salt, such as FeCl3 or NiCl2. Then, dissolved magnetic chemicals are mixed with the pharmaceutical wastewater. The magnetic substances gradually deposit on the surface of activated carbon and impurities, forming chemical bonds. This makes the impurities and activated carbon in the pharmaceutical wastewater magnetic. By rotating the first cylinder 22, the dissolved magnetic chemicals are discharged through the first rectangular hole 221 into the second connecting pipe 21 to mix with the pharmaceutical wastewater. The pharmaceutical wastewater then enters the first water tank 2. Following the inclined side of the first V-shaped plate 25, the pharmaceutical wastewater flows from the second rectangular hole 251 to one side of the second V-shaped plate 26. A magnetic plate 262 is provided on one side of the second V-shaped plate 26. The system adsorbs magnetized impurities and activated carbon in pharmaceutical wastewater, which then flows out through the third rectangular hole 261 and is discharged into the automatic sewage cleaning tank 1 via the first connecting pipe 11 for biological treatment. Before the pharmaceutical wastewater is discharged into the automatic sewage cleaning tank 1 for biodegradation, the impurities and activated carbon contained in the pharmaceutical wastewater are magnetized. Then, the magnetized impurities and activated carbon in the pharmaceutical wastewater are adsorbed by the magnetic plate 262. This solves the problem of the impact of impurities and activated carbon in pharmaceutical wastewater on the automatic sewage cleaning tank 1, improves the wastewater treatment efficiency and quality, reduces the operating cost and maintenance difficulty of the automatic sewage cleaning tank 1, enhances the system's adaptability and stability, and promotes environmental protection and sustainable development.

[0033] like Figure 4As shown, the magnetization device also includes first arc-shaped blocks 23 fixedly connected to the first cylindrical 22 at positions corresponding to the first rectangular holes 221 around the first cylindrical 22. The first arc-shaped blocks 23 have a hollow structure inside and are connected to the inside of the first cylindrical 22. The edges of the first arc-shaped blocks 23 are provided with several circular holes 231.

[0034] Specifically, when magnetizing impurities and activated carbon in pharmaceutical wastewater, the dissolved magnetic chemical substances are discharged into the first cylinder 22. Then, when the first cylinder 22 is rotated, the dissolved magnetic chemical substances inside are thrown out from the first rectangular hole 221 and into the first arc-shaped block 23. Then, they are thrown out from the round hole 231 and mixed with the pharmaceutical wastewater. The first arc-shaped block 23 can stir the wastewater and the dissolved magnetic chemical substances, making them more evenly mixed.

[0035] like Figure 4 As shown, a ring 222 is rotatably connected to the upper end of the first cylinder 22, and a second cylinder 223 is fixedly connected to the upper end of the ring 222. The two sides of the ring 222 are fixedly connected to the second connecting pipe 21 through L-shaped blocks 2221. A cylindrical rod 24 is fixedly connected to the middle of the ring 222 through a rectangular block 244. The cylindrical rod 24 is located in the middle of the first cylinder 22. Rectangular strips 241 are fixedly connected to the cylindrical rod 24 around the position corresponding to the first rectangular hole 221. A second arc-shaped block 243 is fixedly connected to one side of the rectangular strip 241 through a first spring 242. The second arc-shaped block 243 can slide within the first rectangular hole 221.

[0036] Specifically, after the dissolved magnetic chemical substance is discharged into the first cylinder 22, the first cylinder 22 is driven to rotate. At this time, the upper end of the first cylinder 22 rotates with the ring 222. Then, the first rectangular hole 221 slides along the inclined side of the second arc-shaped block 243. The second arc-shaped block 243 slides towards the cylindrical rod 24 and squeezes the first spring 242 until the second arc-shaped block 243 completely slides out of the first rectangular hole 221. At this time, the dissolved magnetic chemical substance in the first cylinder 22 can be thrown out from the first rectangular hole 221 into the first arc-shaped block 23 and discharged from the hole 231 to mix with the pharmaceutical wastewater. When the first cylinder 22 stops rotating, the second arc-shaped block 243 slides to the side of the first rectangular hole 221. The first spring 242 releases its elastic force to push the second arc-shaped block 243 into the first rectangular hole 221. When the first cylinder 22 stops rotating, it can prevent the dissolved magnetic chemical substance from flowing out of the first rectangular hole 221 and prevent the pharmaceutical wastewater from entering the first cylinder 22.

[0037] like Figure 3 As shown, a gear ring 224 is fixedly connected to the outer side of the upper end of the first cylinder 22. The gear ring 224 meshes with a gear 225. The gear 225 can rotate at the upper end of the second connecting pipe 21. The output end of the motor 226 is fixedly connected to the upper end of the gear 225. The motor 226 is fixedly connected to the second connecting pipe 21 through a motor mount.

[0038] Specifically, the starter motor 226 drives the gear ring 224 to rotate via the gear 225, and the gear ring 224 drives the first cylinder 22 to rotate. The centripetal force generated by the rotation of the first cylinder 22 can throw out the dissolved magnetic chemical substances inside.

[0039] like Figure 6 As shown, the first V-shaped plate 25 is provided with a plurality of first baffles 256 on the side near the second V-shaped plate 26.

[0040] Specifically, when the pharmaceutical wastewater mixed with dissolved magnetic chemicals flows into the first pool 2, it then flows through the second rectangular hole 251 to the space between the first V-shaped plate 25 and the second V-shaped plate 26. When the pharmaceutical wastewater passes through several first baffles 256 provided on one side of the first V-shaped plate 25, the first baffles 256 can increase the resistance of the pharmaceutical wastewater and reduce the flow rate of the pharmaceutical wastewater, so that the pharmaceutical wastewater flows slowly between the first V-shaped plate 25 and the second V-shaped plate 26, increasing the contact time between the pharmaceutical wastewater and the magnetic plate 262. The magnetic plate 262 has a better adsorption effect on impurities and activated carbon in the pharmaceutical wastewater.

[0041] like Figure 6 As shown, the first V-shaped plate 25 has protrusions 252 on both sides of its upper end, and a V-shaped block 253 is fixedly connected to the upper end of the protrusions 252. The second scraper 27 is slidably arranged on both sides of the lower end of the V-shaped block 253. The second scraper 27 can slide along one side of the magnet plate 262.

[0042] Specifically, when a large amount of impurities and activated carbon are adsorbed on the surface of the magnet plate 262, the adsorption effect of the magnet plate 262 will deteriorate, and it is necessary to clean the impurities and activated carbon on the surface of the magnet plate 262. Driving the second scraper 27 to slide on the surface of the magnet plate 262 can scrape off the impurities and activated carbon on the surface of the magnet plate 262, allowing the magnet plate 262 to continue adsorption while ensuring the adsorption effect.

[0043] like Figures 5-6 As shown, the first V-shaped plate 25 is provided with a groove 2521 on the side near the protrusion 252. A slider is slidably connected inside the groove 2521. A first scraper 255 is rotatably connected to one side of the slider. A first cylindrical block 271 is fixedly connected to the upper end of the second scraper 27. The first cylindrical block 271 can slide inside the second cylindrical block 273. The first cylindrical block 271 is fixedly connected to the second cylindrical block 273 through a second spring 272. Slide rails 254 are fixedly connected to both sides of the lower end of the V-shaped block 253. The second cylindrical block 273 can slide inside the slide rails 254. A first collection box 28 is fixedly connected to both sides of the first water pool 2.

[0044] Specifically, when the second scraper 27 scrapes the impurities and activated carbon on the surface of the magnet plate 262 to one side of the first scraper 255, the lower end of the second scraper 27 is provided with a bevel, which can slide along one side of the first scraper 255 to the upper end. The second scraper 27 drives the first cylindrical block 271 to slide into the interior of the second cylindrical block 273, while squeezing the second spring 272. After the second scraper 27 scrapes the impurities and activated carbon to the upper end of the first scraper 255, it then drives the first scraper 255 to slide upward. The first scraper 255 pushes the impurities and activated carbon to the upper end of the protrusion 252, and then drives the first scraper 255 to rotate to discharge the impurities into the first collection box 28 for collection.

[0045] like Figure 7 As shown, a filter device is provided at the end of the second connecting pipe 21 away from the first water tank 2. The filter device includes a rectangular frame 3 at one end of the second connecting pipe 21. A filter plate 31 is installed inside the upper end of the rectangular frame 3. A third scraper 32 is slidably connected to the upper end of the filter plate 31. A fourth rectangular hole 33 is opened on one side of the upper end of the rectangular frame 3. The fourth rectangular hole 33 is located at the upper end of the filter plate 31. A second collection box 36 is fixedly connected to one side of the rectangular frame 3 at the position corresponding to the fourth rectangular hole 33.

[0046] Specifically, before magnetizing the impurities and activated carbon in the pharmaceutical wastewater, larger impurities can be filtered. The pharmaceutical wastewater is discharged into the rectangular frame 3. After being filtered by the filter plate 31, the impurities are left on the upper end of the filter plate 31. Then, the third scraper 32 is driven to slide on the upper end of the filter plate 31, pushing the impurities into the fourth rectangular hole 33 and discharged into the second collection box 36 for collection, preventing the filter plate 31 from clogging and allowing for continuous filtration.

[0047] Example 2

[0048] As shown in Figure 1, in contrast to Embodiment 1, another embodiment of the present invention is as follows: a sedimentation tank 4 is fixedly connected to the lower end of the rectangular frame 3, and one side of the lower end of the sedimentation tank 4 is fixedly connected to the second connecting pipe 21. An electric valve 211 is provided on the side of the second connecting pipe 21 near the sedimentation tank 4.

[0049] Specifically, the pharmaceutical wastewater filtered by the filter plate 31 flows into the sedimentation tank 4 for sedimentation. Gravity is used to accelerate the settling of the remaining impurities and activated carbon particles. A sludge discharge valve is installed at the bottom to periodically discharge the sediment. During sedimentation, the electric valve 211 is closed. After sedimentation is completed, the electric valve 211 is opened, allowing the water inside the sedimentation tank 4 to flow into the first water pool 2 through the second connecting pipe 21 for further purification.

[0050] like Figure 7As shown, a buffer assembly is provided at the lower end of the rectangular frame 3. The buffer assembly includes two first wave plates 35 that are inclinedly arranged inside the rectangular frame 3. The two first wave plates 35 are intersected and a gap is left between them. Several second wave plates 351 are fixed to the upper end of the first wave plates 35 respectively. The second wave plates 351 are arranged perpendicular to the first wave plates 35.

[0051] Specifically, when pharmaceutical wastewater flows from the rectangular frame 3 into the sedimentation tank 4, it needs to slide along the first wave plate 35 and pass through several second wave plates 351 provided on the upper end of the first wave plate 35. This slows down the flow speed of the pharmaceutical wastewater, allowing it to settle more quickly after entering the sedimentation tank 4 and accelerating the sedimentation time.

[0052] The working principle is as follows: pharmaceutical wastewater is discharged into rectangular frame 3. After being filtered by filter plate 31, impurities are retained on the upper end of filter plate 31. Then, the third scraper 32 is driven to slide on the upper end of filter plate 31, pushing the impurities into the fourth rectangular hole 33 and discharged into the second collection box 36 for collection. Then, it slides along the first wave plate 35, and at the same time, it needs to pass through several second wave plates 351 provided on the upper end of the first wave plate 35, so that the flow speed of pharmaceutical wastewater is slowed down. Then it enters the sedimentation tank 4, so that pharmaceutical wastewater can settle more quickly after entering the sedimentation tank 4, and accelerate the sedimentation time.

[0053] After sedimentation, the pharmaceutical wastewater enters the second connecting pipe 21, and then the dissolved magnetic chemical substances are discharged into the first cylinder 22. The motor 226 is started, which drives the gear ring 224 to rotate through the gear 225. The gear ring 224 drives the first cylinder 22 to rotate. At this time, the upper end of the first cylinder 22 rotates with the ring 222. Then, the first rectangular hole 221 slides along the inclined side of the second arc-shaped block 243. The second arc-shaped block 243 slides towards the cylindrical rod 24 and squeezes the first spring 242 until the second arc-shaped block 243 slides completely out of the first rectangular hole 221. At this time, the dissolved magnetic chemical substances in the first cylinder 22 can be thrown out from the first rectangular hole 221 into the first arc-shaped block 23 and discharged from the circular hole 231 to mix with the pharmaceutical wastewater. When the first cylinder 22 stops rotating, the second arc-shaped block 243 slides to one side of the first rectangular hole 221, and the first spring 242 releases its elastic force to push the second arc-shaped block 243 into the first rectangular hole 221. When the first cylinder 22 stops rotating, it can prevent the dissolved magnetic chemical substances from flowing out from the first rectangular hole 221 and at the same time prevent the pharmaceutical wastewater from entering the first cylinder 22.

[0054] When the pharmaceutical wastewater mixed with dissolved magnetic chemicals flows into the first pool 2, it then flows through the second rectangular hole 251 between the first V-shaped plate 25 and the second V-shaped plate 26. As the wastewater passes through several first baffles 256 on one side of the first V-shaped plate 25, the baffles increase resistance, reducing the flow rate and allowing the wastewater to flow slowly between the first V-shaped plate 25 and the second V-shaped plate 26. This increases the contact time between the wastewater and the magnetic plate 262. When the surface of the magnetic plate 262 adsorbs a large amount of impurities and activated carbon, the second scraper 27 is driven to slide across the surface of the magnetic plate 262, scraping away the impurities and activated carbon. 7. When the impurities and activated carbon on the surface of the magnet plate 262 are scraped to one side of the first scraper 255, the lower end of the second scraper 27 is provided with a bevel, which can slide along one side of the first scraper 255 to the upper end. The second scraper 27 drives the first cylindrical block 271 to slide into the interior of the second cylindrical block 273, while squeezing the second spring 272. After the second scraper 27 scrapes the impurities and activated carbon to the upper end of the first scraper 255, it then drives the first scraper 255 to slide upward. The first scraper 255 pushes the impurities and activated carbon to the upper end of the protrusion 252, and then drives the first scraper 255 to rotate to discharge the impurities into the first collection box 28 for collection. Then, the pharmaceutical wastewater enters the automatic sewage cleaning tank 1 and is treated by biological treatment.

[0055] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic sewage tank cleaning device, comprising an automatic sewage cleaning tank (1), wherein a first water tank (2) is fixedly connected to one side of the automatic sewage cleaning tank (1) via a first connecting pipe (11), and a second connecting pipe (21) is fixedly connected to the side of the first water tank (2) away from the automatic sewage cleaning tank (1), wherein a magnetizing device is provided in the middle of the second connecting pipe (21), characterized in that: The magnetization device includes a first cylinder (22) through which the upper end of the second connecting pipe (21) rotates. The first cylinder (22) has a plurality of first rectangular holes (221) around its perimeter. The first water tank (2) is provided with a separation device. The separation device includes a first V-shaped plate (25) and a second V-shaped plate (26) fixedly connected to the inside of the first water tank (2). The first V-shaped plate (25) and the second V-shaped plate (26) are arranged in parallel. The first V-shaped plate (25) has second rectangular holes (251) on both sides. The second V-shaped plate (26) has a third rectangular hole (261) in the middle. Magnet plates (262) are fixedly connected to both sides of the second V-shaped plate (26) near the first V-shaped plate (25). The magnetization device also includes first arc-shaped blocks (23) fixedly connected to the first cylindrical tube (22) at the positions corresponding to the first rectangular hole (221) around the first cylindrical tube (22). The first arc-shaped blocks (23) have a hollow structure inside and are connected to the inside of the first cylindrical tube (22). The first arc-shaped blocks (23) have several circular holes (231) on their edges. The first V-shaped plate (25) is provided with a plurality of first baffles (256) on the side near the second V-shaped plate (26); The first V-shaped plate (25) has protrusions (252) on both sides of its upper end. The protrusions (252) are fixedly connected to a V-shaped block (253) on their upper ends. The lower ends of the V-shaped block (253) are slidably provided with second scrapers (27). The second scrapers (27) can slide along one side of the magnet plate (262). The first V-shaped plate (25) is provided with a sliding groove (2521) on the side near the protrusion (252). A slider is slidably connected inside the sliding groove (2521). A first scraper (255) is rotatably connected to one side of the slider. A first cylindrical block (271) is fixedly connected to the upper end of the second scraper (27). The first cylindrical block (271) can slide inside the second cylindrical block (273). The first cylindrical block (271) is fixedly connected to the inside of the second cylindrical block (273) by a second spring (272). A slide rail (254) is fixedly connected to both sides of the lower end of the V-shaped block (253). The second cylindrical block (273) can slide inside the slide rail (254). A first collection box (28) is fixedly connected to both sides of the first pool (2).

2. The automatic cleaning device for sewage tanks according to claim 1, characterized in that: The upper end of the first cylinder (22) is rotatably connected to a ring (222), and the upper end of the ring (222) is fixedly connected to a second cylinder (223). The two sides of the ring (222) are fixedly connected to the second connecting pipe (21) through L-shaped blocks (2221). The middle part of the ring (222) is fixedly connected to a cylindrical rod (24) through a rectangular block (244). The cylindrical rod (24) is located in the middle of the first cylinder (22). Rectangular strips (241) are fixedly connected to the cylindrical rod (24) around the position corresponding to the first rectangular hole (221). A second arc-shaped block (243) is fixedly connected to one side of the rectangular strip (241) through a first spring (242). The second arc-shaped block (243) can slide in the first rectangular hole (221).

3. The automatic cleaning device for sewage tanks according to claim 2, characterized in that: A gear ring (224) is fixedly connected to the outer side of the upper end of the first cylinder (22). The gear ring (224) meshes with a gear (225). The gear (225) can rotate at the upper end of the second connecting pipe (21). The output end of a motor (226) is fixedly connected to the upper end of the gear (225). The motor (226) is fixedly connected to the second connecting pipe (21) through a motor seat.

4. The automatic cleaning device for sewage tanks according to claim 3, characterized in that: A filter device is provided at the end of the second connecting pipe (21) away from the first water tank (2). The filter device includes a rectangular frame (3) at one end of the second connecting pipe (21). A filter plate (31) is installed inside the upper end of the rectangular frame (3). A third scraper (32) is slidably connected to the upper end of the filter plate (31). A fourth rectangular hole (33) is opened on one side of the upper end of the rectangular frame (3). The fourth rectangular hole (33) is located at the upper end of the filter plate (31). A second collection box (36) is fixedly connected to one side of the rectangular frame (3) at the position corresponding to the fourth rectangular hole (33).

5. The automatic cleaning device for sewage tanks according to claim 4, characterized in that: The lower end of the rectangular frame (3) is fixedly connected to a sedimentation tank (4), and one side of the lower end of the sedimentation tank (4) is fixedly connected to a second connecting pipe (21). An electric valve (211) is provided on the side of the second connecting pipe (21) near the sedimentation tank (4).

6. The automatic cleaning device for sewage tanks according to claim 5, characterized in that: The lower end of the rectangular frame (3) is provided with a buffer component. The buffer component includes two first wave plates (35) that are inclined inside the rectangular frame (3). The two first wave plates (35) are arranged crosswise and have a gap between them. Several second wave plates (351) are fixed to the upper end of the first wave plates (35). The second wave plates (351) are arranged perpendicular to the first wave plates (35).

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