Special magnetic powder recovery device and method for magnetic coagulation based on water treatment

Abstract

The invention discloses a special magnetic powder recovery device and method for magnetic coagulation based on water treatment, and relates to the technical field of sewage treatment. The sludge recycling device comprises a sludge inlet pipe arranged on a recycling box and used for conveying sludge, and further comprises a supporting plate arranged in the recycling box and provided with a magnetic suction box and a magnetic suction barrel, and the sludge inlet pipe communicates with the magnetic suction box; the pre-recovery unit comprises a driving assembly and an adsorption assembly, and a plurality of adsorption discs are arranged in the adsorption assembly; and the fine recovery unit comprises a water guide assembly and a separation assembly. The method has the advantages that by adopting the coherent working procedures of filtering pretreatment, rotary adsorption and scattering separation in cooperation with washing conduction and stirring adsorption secondary separation, efficient primary separation and targeted adsorption of sludge and magnetic powder are achieved, impurities are further removed through secondary separation, the situation that sludge is mixed in the recycled magnetic powder is effectively avoided, and the magnetic powder recycling efficiency is improved. And the recovery efficiency and the purity of the magnetic powder are greatly improved.

Description

Technical Field

[0001] This invention relates to the technical field of wastewater treatment, and in particular to a magnetic powder recovery device and method for magnetic coagulation based on water treatment. Background Technology

[0002] Existing wastewater treatment plants typically add an appropriate amount of magnetic powder to the wastewater during treatment, allowing it to combine with the flocculated pollutants. This aims to enhance the coagulation and flocculation effects through magnetic coagulation technology, thereby improving sludge settling efficiency. After settling, the magnetic powder in the sludge is usually recovered using a recycling device, thus achieving the recycling of the magnetic powder.

[0003] Existing recycling devices employ various methods to recover magnetic powder. For example, a sludge magnetic powder recovery device with publication number CN217709154U includes a shell, a supernatant pipe on the shell, an upper baffle inside the shell below the supernatant pipe, a sludge discharge pipe on the shell side of the upper baffle, an inlet pipe on the shell below the upper baffle, multiple baffles inside the shell below the inlet pipe, and a magnetic powder discharge pipe at the bottom of the shell below the multiple baffles. The upper baffle has a bent structure, with the bent portion of the upper baffle located at the bottom. The multiple baffles include multiple bent plates arranged vertically. Existing recycling devices typically use direct sedimentation to separate and recycle magnetic powder. However, due to the large sludge content, this separation method cannot achieve rapid separation of magnetic powder and sludge. As a result, a significant amount of magnetic powder remains adhering to the sludge after separation, making recycling incomplete. For example, the aforementioned prior art uses direct sedimentation to separate magnetic powder and sludge. This method cannot remove large-volume impurities from the sludge, causing these impurities and some sludge to settle simultaneously with the magnetic powder. Additionally, some magnetic powder adheres to the sludge and cannot be effectively separated and recycled, resulting in a low magnetic powder recovery rate and certain limitations. Therefore, there is an urgent need to design a magnetic powder recovery device and method for magnetic coagulation based on water treatment to solve the above problems. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a magnetic powder recovery device and method for magnetic coagulation based on water treatment, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a magnetic powder recovery device for magnetic coagulation based on water treatment, comprising a sludge inlet pipe disposed on a recovery tank for conveying sludge, and further comprising: A support plate is installed inside the recycling bin, on which a magnetic suction box and a magnetic suction cylinder are installed, and the sludge inlet pipe is connected to the magnetic suction box. The pre-recovery unit is located inside the magnetic suction box and includes a drive component and an adsorption component. The adsorption component is equipped with multiple adsorption plates, and each adsorption plate is equipped with an electromagnetic adsorption tank for adsorbing magnetic powder in the sludge. The fine recovery unit, located inside the magnetic suction cylinder, includes a water guiding component and a separation component. The water guiding component is equipped with a water guiding pump, which, in conjunction with the water guiding pump, washes and conducts the magnetic powder inside the magnetic suction box. The separation component is equipped with an electromagnetic adsorption ring for adsorbing the magnetic powder, which, in conjunction with the separation component, achieves secondary separation of the magnetic powder and wastewater.

[0006] Preferably, the side of the recycling bin is equipped with an intelligent control host, which is used to control the opening, closing and operation status of the pre-recycling unit and the fine recycling unit, so as to realize the automated recycling of magnetic powder in the sludge.

[0007] Preferably, the drive assembly includes a servo motor fixedly installed inside the recycling bin, and the servo motor is located at the lower part of the support plate. A drive roller for driving is fixedly installed on the drive end of the servo motor.

[0008] Preferably, the pre-recovery unit includes a filter inclined plate fixedly installed in the magnetic suction box for filtering large-volume impurities in the sludge, and the feed end of the sludge inlet pipe is located between the filter inclined plate and the magnetic suction box. The magnetic suction box is provided with a discharge pipe for discharging large-volume impurities.

[0009] Preferably, the adsorption assembly includes a transmission rod one and a transmission rod two rotatably mounted on the magnetic suction box, and a transmission mechanism is installed between the transmission rod one and the drive roller. Two water storage cylinders are respectively fixedly mounted on the transmission rod one and the transmission rod two. A dispersing mechanism is installed between each water storage cylinder and the magnetic suction box. The magnetic suction box is provided with a drain pipe for discharging sludge.

[0010] Preferably, the transmission mechanism includes a one-way bearing 1 disposed on the drive roller, and the one-way bearing 1 cooperates with the forward rotation of the drive roller. A worm gear is fixedly installed on the one-way bearing 1. A linkage rod is rotatably installed inside the recycling box, and a worm wheel that cooperates with the worm gear is fixedly installed on the linkage rod. A transmission belt 1 is sleeved between the linkage rod and the transmission rod 1, and a transmission belt 2 is sleeved between the transmission rod 1 and the transmission rod 2. The dispersing mechanism includes two support rollers rotatably installed inside the magnetic suction box, with each support roller located between two corresponding suction discs. Each support roller is fixedly equipped with multiple dispersing wheels for dispersing sludge, and each support roller is fixedly equipped with a driven helical gear at its bottom. The water storage cylinder is fixedly equipped with two transmission helical gear rings that mesh with the corresponding driven helical gears.

[0011] Preferably, the water guiding assembly includes a support plate fixedly installed inside the magnetic suction cylinder, and the upper part of the magnetic suction cylinder is filled with cleaning water. The magnetic suction cylinder is provided with a water replenishment pipe for replenishing the cleaning water. The water guiding pump is installed on the support plate, and a transmission mechanism is installed between the water guiding pump and the magnetic suction box.

[0012] Preferably, the transmission mechanism includes a water injection pipe fixedly connected to the outlet end of the water pump for transmitting cleaning water, two water storage cylinders are rotatably connected to water inlet pipes, and both water inlet pipes are connected to the water injection pipe, multiple water spray rings are fixedly connected to both water storage cylinders, and each water spray ring is fixedly connected to a water spray pipe for cleaning the adsorption plate, and a transmission pipe for transmitting the sewage magnetic powder mixture is fixedly connected between the magnetic suction box and the magnetic suction cylinder.

[0013] Preferably, the separation assembly includes a stirring roller rotatably installed inside a magnetic suction cylinder, and a helical gear two is fixedly installed on the lower part of the stirring roller. A one-way bearing two is provided on the drive roller, and the one-way bearing two cooperates with the reverse rotation of the drive roller. A helical gear one that meshes with the helical gear two is fixedly installed on the one-way bearing two. The magnetic suction cylinder is fixedly installed with an electromagnetic adsorption ring for adsorbing magnetic powder. Multiple electric telescopic rods are fixedly installed on the stirring roller, and a cleaning scraper for scraping magnetic powder off the electromagnetic adsorption ring is fixedly installed on the drive end of each electric telescopic rod. The magnetic suction cylinder is provided with a magnetic collection box for adsorbing magnetic powder, and a drain pipe for discharging wastewater is provided on the magnetic suction cylinder.

[0014] A method for recovering magnetic powder for magnetic coagulation based on water treatment, used in the aforementioned magnetic powder recovery device for magnetic coagulation based on water treatment, includes the following steps: S1. When recycling magnetic powder, the sludge containing magnetic powder is injected into the magnetic suction box in the recycling box through the sludge inlet pipe. S2. Start the drive component to drive multiple adsorption discs to rotate, and start multiple electromagnetic adsorption tanks at the same time to adsorb magnetic powder in the sludge. S3. After the magnetic powder adsorption is completed, the adsorption plate and the electromagnetic adsorption tank are rinsed by the water pump and the water guiding component, so that the magnetic powder on the electromagnetic adsorption tank is detached and injected into the magnetic suction cylinder with the cleaning water. S4. The starting separation component, in cooperation with the drive component, stirs the sewage magnetic powder mixture, and during the stirring process, the magnetic powder is re-adsorbed by the electromagnetic adsorption ring, so as to achieve complete separation of magnetic powder and sewage.

[0015] This invention provides a magnetic powder recovery device and method for magnetic coagulation based on water treatment. It has the following beneficial effects: 1. When recovering magnetic powder, this magnetic powder recovery device can perform preliminary filtration of sludge by means of a filter inclined plate. This removes large impurities in the sludge, preventing them from settling together with the sludge and magnetic powder, which would affect the separation effect of sludge and magnetic powder.

[0016] 2. When recovering magnetic powder, this magnetic powder recovery device uses an adsorption plate in conjunction with multiple electromagnetic adsorption tanks to efficiently adsorb the magnetic powder while the sludge is being transported. At the same time, the dispersing action of multiple dispersing wheels achieves a more thorough separation of sludge and magnetic powder, further improving the adsorption and recovery effect of magnetic powder.

[0017] 3. When this magnetic powder recovery device recovers magnetic powder, after the magnetic powder is adsorbed, the water pump and the spray ring can efficiently wash the adsorption plate and the electromagnetic adsorption tank, so that the magnetic powder adhering to the adsorption plate and the electromagnetic adsorption tank can be washed off and simultaneously enter the magnetic suction cylinder for further separation, effectively improving the magnetic powder recovery effect.

[0018] 4. When recovering magnetic powder, this magnetic powder recovery device uses a stirring roller in conjunction with an electric telescopic rod to efficiently stir the sewage magnetic powder mixture. At the same time, the electromagnetic adsorption ring is used to achieve more thorough adsorption of magnetic powder in the sewage magnetic powder mixture, realizing complete separation of sewage and magnetic powder, and effectively improving the purity of magnetic powder recovery.

[0019] In summary, this invention employs a continuous process of filtration pretreatment, rotational adsorption, dispersion separation, and combined with rinsing conduction and stirring adsorption secondary separation. This achieves efficient preliminary separation and targeted adsorption of sludge and magnetic powder, and further removes impurities through secondary separation, effectively avoiding sludge contamination in the recovered magnetic powder and significantly improving the recovery efficiency and purity of the magnetic powder.

[0020] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings. Attached Figure Description

[0021] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the structure of a magnetic powder recovery device for magnetic coagulation based on water treatment proposed in this invention; Figure 2 for Figure 1 A schematic diagram of the structure after rotation at a certain angle; Figure 3 for Figure 2Internal structure diagram of the recycling bin; Figure 4 for Figure 3 The front view; Figure 5 for Figure 3 A schematic diagram of the structure after removing the recycling bin; Figure 6 for Figure 5 A schematic diagram of the structure of the servo motor and the magnetic box; Figure 7 for Figure 6 Internal structure diagram of the magnetic chuck box; Figure 8 for Figure 7 A schematic diagram of the upper structure of the two water storage cylinders; Figure 9 for Figure 8 A schematic diagram of the water storage cylinder and its multiple adsorption plates; Figure 10 for Figure 9 The front view; Figure 11 for Figure 10 A structural decomposition diagram; Figure 12 for Figure 5 A schematic diagram of the structure of the magnetic suction cylinder and the drive roller; Figure 13 for Figure 12 Schematic diagram of the internal structure of the magnetic chuck; Figure 14 for Figure 13 The front view; Figure 15 for Figure 13 A schematic diagram of the structure of the stirring roller and the electromagnetic adsorption ring; Figure 16 for Figure 15 A schematic diagram of the structure after removing the stirring roller.

[0022] In the diagram: 1. Recycling bin, 2. Intelligent control unit, 3. Sludge inlet pipe, 4. Waste discharge pipe, 5. Sewage discharge pipe, 6. Drainage pipe, 7. Water supply pipe, 8. Support plate, 9. Servo motor, 10. Magnetic suction box, 11. Magnetic suction cylinder, 12. Drive roller, 13. One-way bearing I, 14. Linkage rod, 15. Transmission pipe, 16. Water injection pipe, 17. Worm gear, 18. Worm wheel, 19. Transmission rod I, 20. Transmission belt I, 21. Transmission rod II, 22. Transmission belt II, 23. Filter inclined plate, 24. Water storage cylinder, 25. Adsorption plate, 26. Support roller, 27. Electromagnetic adsorption tank, 28. Water spray ring, 29. Dispersing wheel, 30. Transmission helical gear ring, 31. Driven helical gear, 32. One-way bearing II, 33. Helical gear I, 34. Helical gear II, 35. Stirring roller, 36. Magnetic recycling box, 37. Electromagnetic adsorption ring, 38. Water pump, 39. Support plate, 40. Electric telescopic rod, 41. Sweeping scraper. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0024] Example 1: Refer to Figures 1-3 A magnetic powder recovery device for magnetic coagulation based on water treatment includes a sludge inlet pipe 3 installed on a recovery tank 1 for conducting sludge. The sludge inlet pipe 3 is used to conduct sludge after sedimentation treatment in a sedimentation tank, and the magnetic powder in the sludge is recovered by this magnetic powder recovery device.

[0025] The sludge contains large-volume impurities, sludge and magnetic powder. This magnetic powder recovery device is mainly used to specifically recover the magnetic powder and discharge the impurities and sludge.

[0026] This magnetic powder recovery device also includes: A support plate 8 is installed inside the recycling bin 1, on which a magnetic suction box 10 and a magnetic suction cylinder 11 are installed. The sludge inlet pipe 3 is connected to the magnetic suction box 10. The magnetic suction box 10 is used to achieve the initial recycling of magnetic powder in the sludge and remove large-volume impurities in the sludge. The magnetic suction cylinder 11 is used to recycle the magnetic powder after the initial treatment, so as to achieve the complete separation of sludge and magnetic powder, improve the purity of the recycled magnetic powder, and avoid the recycled magnetic powder being mixed with sludge.

[0027] The pre-recovery unit is located inside the magnetic suction box 10. The pre-recovery unit can effectively filter out large impurities in the sludge, avoiding the impact of large-volume impurities on the magnetic powder recovery effect. At the same time, it uses the method of breaking up the sludge to fully expose the magnetic powder, and uses the method of synchronous adsorption to achieve effective separation of magnetic powder and sludge, completing the initial separation of sludge and magnetic powder, and realizing the pre-recovery treatment of magnetic powder in sludge.

[0028] The fine recovery unit is located inside the magnetic suction cylinder 11. The fine recovery unit uses washing water to achieve efficient desorption of magnetic powder, and uses stirring to fully disperse the magnetic powder. At the same time, it performs secondary adsorption of magnetic powder to achieve complete separation of magnetic powder and wastewater, which greatly improves the recovery efficiency and purity of magnetic powder.

[0029] The side of the recycling bin 1 is equipped with an intelligent control host 2. The intelligent control host 2 is used to control the opening and closing and operation status of the pre-recycling unit and the fine recycling unit, realize the automatic recycling of magnetic powder in the sludge, realize the complete separation of sludge and magnetic powder, and separate the magnetic powder in the sludge and sewage for targeted recycling.

[0030] Example 2: Refer to Figures 1-3The difference between this embodiment and embodiment one is that the pre-recovery unit includes a driving component and an adsorption component. The adsorption component is provided with multiple adsorption disks 25, and each adsorption disk 25 is provided with an electromagnetic adsorption tank 27 for adsorbing magnetic powder in the sludge.

[0031] The pre-recovery unit includes a filter inclined plate 23 fixedly installed in the magnetic suction box 10 for filtering large volume impurities in the sludge, and the feed end of the sludge inlet pipe 3 is located between the filter inclined plate 23 and the magnetic suction box 10. The sludge to be treated is injected into the magnetic suction box 10 through the sludge inlet pipe 3, and will first come into contact with the filter inclined plate 23 in the magnetic suction box 10. At this time, the filter inclined plate 23 will filter and block the large volume impurities in the sludge, so that the large volume impurities cannot pass through the filter inclined plate 23, while the sludge and magnetic powder will continue to flow in the magnetic suction box 10 through the filter inclined plate 23.

[0032] The magnetic suction box 10 is equipped with a discharge pipe 4 for discharging large volume impurities. After the sludge treatment is completed, the discharge pipe 4 can be opened periodically to export the large volume impurities filtered out in the magnetic suction box 10 and collect and treat them in a targeted manner.

[0033] In a further embodiment, the drive assembly includes a servo motor 9 fixedly installed in the recycling bin 1, and the servo motor 9 is located at the lower part of the support plate 8. A drive roller 12 for driving is fixedly installed on the drive end of the servo motor 9. The servo motor 9 is started under the control of the intelligent control host 2. Once the servo motor 9 is started, it will drive the drive roller 12 to rotate. The rotation direction and speed of the drive roller 12 can be controlled by the servo motor 9 to realize the recycling and adsorption treatment of magnetic powder in the sludge.

[0034] The adsorption assembly includes a transmission rod 19 and a transmission rod 21 rotatably mounted on the magnetic box 10, and a transmission mechanism is installed between the transmission rod 19 and the drive roller 12. Two water storage cylinders 24 are respectively fixedly mounted on the transmission rod 19 and the transmission rod 21.

[0035] The transmission mechanism includes a one-way bearing 13 mounted on the drive roller 12, and the one-way bearing 13 cooperates with the forward rotation of the drive roller 12. A worm gear 17 is fixedly mounted on the one-way bearing 13. A linkage rod 14 is rotatably mounted inside the recycling box 1, and a worm wheel 18 that cooperates with the worm gear 17 is fixedly mounted on the linkage rod 14. A transmission belt 20 is sleeved between the linkage rod 14 and the transmission rod 19, and a transmission belt 22 is sleeved between the transmission rod 19 and the transmission rod 21. After the sludge enters the magnetic suction box 10, the servo motor 9 can be started to drive the drive roller 12 to rotate in the forward direction. When the drive roller 12 rotates in the forward direction, it will drive the one-way bearing 13 to rotate. The rotation of the one-way bearing 13 will drive the worm gear 17 on it to rotate. The rotation of the worm gear 17 will drive the worm wheel 18 to rotate, which in turn will drive the linkage rod 14 to rotate synchronously. When the linkage rod 14 rotates, it will drive the transmission rod 19 to rotate under the action of the transmission belt 20. When the transmission rod 19 rotates, it will drive the transmission rod 21 to rotate under the action of the transmission belt 22, thereby realizing the synchronous rotation of the transmission rod 19 and the transmission rod 21. When the transmission rod 19 and the transmission rod 21 rotate, they will drive the two water tanks 24 to rotate synchronously.

[0036] The magnetic suction box 10 is equipped with a drain pipe 5 for discharging sludge. After passing through the filter inclined plate 23, the sludge will continue to move inside the magnetic suction box 10. During the movement, it will pass through two water storage cylinders 24 and multiple adsorption plates 25 on them in sequence. When passing through the adsorption plates 25, the magnetic powder inside will be adsorbed and removed, and finally discharged through the drain pipe 5.

[0037] When the water storage cylinder 24 rotates, it will drive multiple adsorption plates 25 on it to rotate synchronously. When the sludge passes through the multiple adsorption plates 25, the multiple adsorption plates 25 will rotate synchronously and come into full contact with the sludge. At this time, the multiple electromagnetic adsorption grooves 27 on the adsorption plates 25 will be activated and generate magnetic attraction force, which can adsorb the magnetic powder in the sludge, separate the magnetic powder from the sludge, and complete the initial adsorption treatment of magnetic powder.

[0038] In a further embodiment, a dispersing mechanism is installed between each water storage cylinder 24 and the magnetic suction box 10. The dispersing mechanism includes two support rollers 26 rotatably installed inside the magnetic suction box 10, and each support roller 26 is located between two corresponding suction plates 25. Multiple dispersing wheels 29 for dispersing sludge are fixedly installed on each support roller 26. A driven helical gear 31 is fixedly installed at the bottom of each support roller 26, and two transmission helical gear rings 30 that mesh with the corresponding driven helical gear 31 are fixedly installed on the water storage cylinder 24. When the water tank 24 rotates, it drives the transmission helical gear ring 30 on it to rotate. When the transmission helical gear ring 30 rotates, it drives the driven helical gear 31 that it is paired with to rotate. When the driven helical gear 31 rotates, it drives the support roller 26 to rotate, which in turn drives the multiple scattering wheels 29 on it to rotate synchronously.

[0039] When the sludge is adsorbed by magnetic powder between multiple adsorption plates 25, multiple dispersing wheels 29 will rotate synchronously to disperse the sludge, thereby refining and decomposing the clumps or lumps of sludge, so that the magnetic powder wrapped inside the sludge is fully exposed, preventing the magnetic powder from being trapped by the sludge and unable to be captured and adsorbed by the electromagnetic adsorption tank 27. At the same time, dispersing the sludge can improve the uniformity and efficiency of magnetic powder adsorption, further improve the adsorption effect of magnetic powder in the sludge, and achieve a complete and thorough separation of magnetic powder and sludge.

[0040] Example 3: Refer to Figures 1-3 The difference between this embodiment and embodiment two is that the fine recovery unit includes a water guiding component and a separation component. The water guiding component is equipped with a water guiding pump 38, which is used to flush and conduct magnetic powder in the magnetic suction box 10. The separation component is equipped with an electromagnetic adsorption ring 37 for adsorbing magnetic powder, which is used to achieve secondary separation of magnetic powder and sewage through the cooperation of the electromagnetic adsorption ring 37 and the separation component.

[0041] After the sludge is completely adsorbed in the magnetic suction box 10, it will be discharged through the drain pipe 5. The adsorbed magnetic powder and some residual sludge will accumulate in the adsorption plate 25 and the electromagnetic adsorption tank 27. At this time, the water guiding component can be activated to rinse the magnetic powder and sludge in the magnetic suction box 10.

[0042] The water guiding assembly includes a support plate 39 fixedly installed inside the magnetic suction cylinder 11, and the magnetic suction cylinder 11 is filled with cleaning water at the upper part of the support plate 39. A water replenishment pipe 7 for replenishing cleaning water is provided on the magnetic suction cylinder 11, and a water guiding pump 38 is provided on the support plate 39. When the water pump 38 starts, it will pump out the cleaning water in the magnetic suction cylinder 11, and the cleaning water can be replenished periodically through the water supply pipe 7.

[0043] A transmission mechanism is installed between the water pump 38 and the magnetic suction box 10. The transmission mechanism includes a water injection pipe 16 fixedly connected to the water outlet of the water pump 38 for transmitting cleaning water. Both water storage cylinders 24 are rotatably connected to water inlet pipes, and both water inlet pipes are connected to the water injection pipe 16. Both water storage cylinders 24 are fixedly connected to multiple water spray rings 28, and each water spray ring 28 is fixedly connected to a water spray pipe for cleaning the adsorption plate 25. The cleaning water pumped by the water pump 38 will be discharged through the water injection pipe 16 and injected into the two water storage tanks 24 through the two water inlet pipes. The water will then be injected into the multiple water spray rings 28 on the storage tanks 24 and finally sprayed out through the multiple water spray pipes.

[0044] Once the sludge is discharged, the multiple electromagnetic adsorption tanks 27 on the adsorption plate 25 will be de-energized and demagnetized. At this time, the magnetic powder adsorbed on them will automatically fall off. Simultaneously, the cleaning water sprayed from multiple water spray pipes will spray onto the adsorption plate 25 and the multiple electromagnetic adsorption tanks 27. This will not only rinse the adsorption plate 25 and the electromagnetic adsorption tanks 27, removing the sludge and magnetic powder adhering to them and preventing the sludge and magnetic powder from accumulating on the adsorption plate 25 and the electromagnetic adsorption tanks 27, but also mix the sludge, magnetic powder and cleaning water to form a sludge-magnetic powder mixture, which will eventually be discharged from the magnetic adsorption box 10, completing the discharge of magnetic powder and sludge. At the same time, it will prevent the accumulation of magnetic powder and sludge from affecting the subsequent adsorption of magnetic powder.

[0045] In a further embodiment, a conduction pipe 15 for conducting sewage magnetic powder mixture is fixedly connected between the magnetic box 10 and the magnetic cylinder 11. The sludge magnetic powder mixture in the magnetic box 10 will be injected into the magnetic cylinder 11 through the conduction pipe 15 and will accumulate in the magnetic cylinder 11, thus completing the conduction of the sludge magnetic powder mixture and facilitating the re-collection of magnetic powder.

[0046] The separation assembly includes a stirring roller 35 rotatably mounted inside a magnetic suction cylinder 11, and a helical gear 34 is fixedly mounted on the lower part of the stirring roller 35. A one-way bearing 32 is provided on the drive roller 12, and the one-way bearing 32 cooperates with the reverse rotation of the drive roller 12. A helical gear 33 that meshes with the helical gear 34 is fixedly mounted on the one-way bearing 32. After the sludge magnetic powder mixture enters the magnetic suction cylinder 11, the servo motor 9 can be started to drive the drive roller 12 to rotate in the opposite direction. The reverse rotation of the drive roller 12 will drive the one-way bearing 32 to rotate (at this time, the one-way bearing 13 does not rotate). When the one-way bearing 32 rotates, it will drive the helical gear 33 on it to rotate. The rotation of the helical gear 33 will drive the helical gear 34 meshing with it to rotate, which in turn drives the stirring roller 35 to rotate.

[0047] An electromagnetic adsorption ring 37 for adsorbing magnetic powder is fixedly installed inside the magnetic suction cylinder 11. Multiple electric telescopic rods 40 are fixedly installed on the stirring roller 35, and a cleaning scraper 41 for scraping off the magnetic powder on the electromagnetic adsorption ring 37 is fixedly installed on the drive end of each electric telescopic rod 40. When the stirring roller 35 rotates, it will drive the multiple electric telescopic rods 40 and the cleaning scraper 41 on it to rotate. The rotation of the multiple electric telescopic rods 40 and the cleaning scraper 41 will fully stir the sludge magnetic powder mixture in the magnetic suction cylinder 11. The full stirring will break the agglomeration of the magnetic powder and sludge, so that the magnetic powder is fully dispersed in the liquid, and the magnetic powder will not settle or adhere to the sludge. At the same time, it can break up the fine sludge flocs remaining in the mixture, so that the magnetic powder encapsulated in them is fully exposed, and the magnetic powder is more evenly distributed in the sewage. At the same time as breaking up, the electromagnetic adsorption ring 37 will be activated to fully adsorb the magnetic powder mixed in the sewage after breaking up, so as to achieve full separation of magnetic powder and sewage. This can not only purify and clean the magnetic powder, but also further improve the purity of magnetic powder recovery.

[0048] The magnetic suction cylinder 11 is equipped with a magnetic suction recycling box 36 for adsorbing magnetic powder, and a drain pipe 6 for discharging sewage. After the magnetic powder is adsorbed, the drain pipe 6 can be opened to discharge the sewage in the magnetic suction cylinder 11.

[0049] After the sewage is discharged, the electromagnetic adsorption ring 37 can be turned off to de-energize it. At this time, the magnetic powder on the electromagnetic adsorption ring 37 will automatically detach. Simultaneously, multiple electric telescopic rods 40 will start synchronously, driving multiple cleaning scrapers 41 to move and press against the inner wall of the electromagnetic adsorption ring 37. At this time, in conjunction with the rotation of the stirring roller 35, multiple cleaning scrapers 41 will scrape the surface of the electromagnetic adsorption ring 37, thoroughly scraping off the magnetic powder on the electromagnetic adsorption ring 37, which can effectively prevent the magnetic powder from adhering to the electromagnetic adsorption ring 37.

[0050] As the magnetic powder is scraped off, the magnetic collection box 36 will start simultaneously to attract the falling magnetic powder. After the attraction is completed, the magnetic collection box 36 can be removed periodically to collect the magnetic powder, thus achieving full recycling of the magnetic powder.

[0051] The magnetic recycling box 36 is equipped with a heating plate, which can heat the magnetic powder inside to a certain extent, thereby drying the magnetic powder and making it easier to recycle, thus preventing the magnetic powder from accumulating and adhering.

[0052] The working principle of this recycling device is as follows: The sludge to be treated is injected into the magnetic box 10 through the sludge inlet pipe 3, and will first come into contact with the filter inclined plate 23 in the magnetic box 10. The filter inclined plate 23 filters and blocks large-volume impurities in the sludge, preventing large-volume impurities from passing through the filter inclined plate 23, while the sludge and magnetic powder will continue to flow in the magnetic box 10 through the filter inclined plate 23. After the sludge enters the magnetic suction box 10, it continues to move within the magnetic suction box 10 after passing through the filter inclined plate 23. During this movement, it passes through two water storage cylinders 24 and multiple adsorption plates 25 on them in sequence. At the same time, the servo motor 9 is activated to drive the drive roller 12 to rotate in the forward direction. With the cooperation of the drive component, the multiple adsorption plates 25 rotate synchronously, making them fully contact the sludge. At this time, the multiple electromagnetic adsorption grooves 27 on the adsorption plates 25 will be activated and generate magnetic attraction force, which can adsorb the magnetic powder in the sludge and separate the magnetic powder from the sludge. When the water tank 24 rotates, it will drive multiple dispersing wheels 29 to rotate in conjunction with the dispersing mechanism. The multiple dispersing wheels 29 will rotate synchronously to dissolve the sludge, thereby refining and decomposing the clumps or lumps of sludge, allowing the magnetic powder wrapped inside the sludge to be fully exposed, preventing the magnetic powder from being trapped by the sludge and unable to be captured and adsorbed by the electromagnetic adsorption tank 27. At the same time, dispersing the sludge can improve the uniformity and efficiency of magnetic powder adsorption.

[0053] After the sludge is completely adsorbed in the magnetic suction box 10, it will be discharged through the drain pipe 5. The adsorbed magnetic powder and some residual sludge will accumulate in the adsorption plate 25 and the electromagnetic adsorption tank 27. At this time, the water guiding component can be activated to rinse the magnetic powder and sludge in the magnetic suction box 10. When the water guiding component is started, the water guiding pump 38 will inject the cleaning water in the magnetic suction cylinder 11 into the two water storage cylinders 24 through the water injection pipe 16 and the two water inlet pipes, and then inject it into the multiple water spray rings 28 on the storage cylinders 24, and finally spray it out through the multiple water spray pipes. After the sludge is discharged, the multiple electromagnetic adsorption tanks 27 on the adsorption plate 25 will be de-energized and demagnetized, causing the magnetic powder on them to fall off automatically. At the same time, the cleaning water sprayed from the multiple water spray pipes will spray onto the adsorption plate 25 and the multiple electromagnetic adsorption tanks 27, which can both rinse the adsorption plate 25 and the electromagnetic adsorption tanks 27, washing away the sludge and magnetic powder adhering to them and preventing the sludge and magnetic powder from accumulating on the adsorption plate 25 and the electromagnetic adsorption tanks 27, and also mix the sludge, magnetic powder and cleaning water to form a sludge and magnetic powder mixture.

[0054] The sludge-magnetic powder mixture in the magnetic suction box 10 is injected into the magnetic suction cylinder 11 through the conduction pipe 15 and accumulates in the magnetic suction cylinder 11. Then, the servo motor 9 is started to drive the drive roller 12 to rotate in the opposite direction. With the cooperation of the separation component, multiple electric telescopic rods 40 and the cleaning scraper 41 are rotated to fully stir the sludge-magnetic powder mixture in the magnetic suction cylinder 11. Through full stirring, the agglomeration of magnetic powder and sludge is broken, so that the magnetic powder is fully dispersed in the liquid and the magnetic powder is prevented from settling or adhering to the sludge. While the magnetic powder is being dispersed, the electromagnetic adsorption ring 37 will be activated to fully adsorb the magnetic powder mixed in the sewage, thus achieving full separation between the magnetic powder and the sewage. Then, the drain pipe 6 can be opened to discharge the sewage from the magnetic suction cylinder 11.

[0055] After the sewage is discharged, the electromagnetic adsorption ring 37 can be turned off to de-energize it. At this time, the magnetic powder on the electromagnetic adsorption ring 37 will automatically detach. Multiple electric telescopic rods 40 will start synchronously to drive multiple cleaning scrapers 41 to move and press against the inner wall of the electromagnetic adsorption ring 37. With the rotation of the stirring roller 35, multiple cleaning scrapers 41 will scrape the surface of the electromagnetic adsorption ring 37 to fully scrape off the magnetic powder on the electromagnetic adsorption ring 37, which can effectively prevent the magnetic powder from adhering to the electromagnetic adsorption ring 37.

[0056] As the magnetic powder is scraped off, the magnetic collection box 36 will start simultaneously to attract the falling magnetic powder. After the attraction is completed, the magnetic collection box 36 can be removed periodically to collect the magnetic powder, thus achieving full recycling of the magnetic powder.

[0057] This invention also provides a method for recovering magnetic powder for magnetic coagulation based on water treatment, used in the aforementioned magnetic powder recovery device for magnetic coagulation based on water treatment, comprising the following steps: S1. When recycling magnetic powder, sludge containing magnetic powder is injected into the magnetic suction box 10 in the recycling box 1 through the sludge inlet pipe 3. S2. Start the drive assembly to drive multiple adsorption disks 25 to rotate, and at the same time start multiple electromagnetic adsorption tanks 27 to adsorb magnetic powder in the sludge. S3. After the magnetic powder adsorption is completed, the water pump 38 and the water guiding component work together to rinse the adsorption plate 25 and the electromagnetic adsorption tank 27, so that the magnetic powder on the electromagnetic adsorption tank 27 is detached and injected into the magnetic suction cylinder 11 with the cleaning water. S4. The starting separation component, in cooperation with the drive component, stirs the sewage magnetic powder mixture, and during the stirring process, the magnetic powder is re-adsorbed by the electromagnetic adsorption ring 37, so as to achieve complete separation of magnetic powder and sewage.

[0058] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A magnetic powder recovery device for magnetic coagulation based on water treatment, comprising a sludge inlet pipe (3) disposed on a recovery tank (1) for conveying sludge, characterized in that, Also includes: A support plate (8) is set inside the recycling bin (1), on which a magnetic suction box (10) and a magnetic suction cylinder (11) are set, and the sludge inlet pipe (3) is connected to the magnetic suction box (10); The pre-recovery unit is set in the magnetic suction box (10) and includes a driving component and an adsorption component. The adsorption component is provided with multiple adsorption plates (25), and each adsorption plate (25) is provided with an electromagnetic adsorption tank (27) for adsorbing magnetic powder in the sludge. The fine recovery unit is set inside the magnetic suction cylinder (11) and includes a water guiding component and a separation component. The water guiding component is equipped with a water guiding pump (38). The water guiding pump (38) is used to flush and conduct magnetic powder in the magnetic suction box (10). The separation component is equipped with an electromagnetic adsorption ring (37) for adsorbing magnetic powder. The electromagnetic adsorption ring (37) and the separation component are used to achieve secondary separation of magnetic powder and sewage.

2. The magnetic powder recovery device for magnetic coagulation based on water treatment according to claim 1, characterized in that, The side of the recycling bin (1) is equipped with a smart control host (2), which is used to control the opening and closing and operation status of the pre-recycling unit and the fine recycling unit, so as to realize the automated recycling of magnetic powder in the sludge.

3. The magnetic powder recovery device for magnetic coagulation based on water treatment according to claim 1, characterized in that, The drive assembly includes a servo motor (9) fixedly installed in the recycling bin (1), and the servo motor (9) is located at the lower part of the support plate (8). A drive roller (12) for driving is fixedly installed on the drive end of the servo motor (9).

4. The magnetic powder recovery device for magnetic coagulation based on water treatment according to claim 3, characterized in that, The pre-recovery unit includes a filter inclined plate (23) fixedly installed in the magnetic suction box (10) for filtering large volume impurities in the sludge, and the feed end of the sludge inlet pipe (3) is located between the filter inclined plate (23) and the magnetic suction box (10). The magnetic suction box (10) is provided with a discharge pipe (4) for discharging large volume impurities.

5. A magnetic powder recovery device for magnetic coagulation based on water treatment according to claim 4, characterized in that, The adsorption assembly includes a transmission rod one (19) and a transmission rod two (21) rotatably mounted on the magnetic suction box (10), and a transmission mechanism is installed between the transmission rod one (19) and the drive roller (12). Two water storage cylinders (24) are respectively fixedly mounted on the transmission rod one (19) and the transmission rod two (21). A dispersing mechanism is installed between each water storage cylinder (24) and the magnetic suction box (10). The magnetic suction box (10) is provided with a sewage pipe (5) for discharging sludge.

6. A magnetic powder recovery device for magnetic coagulation based on water treatment according to claim 5, characterized in that, The transmission mechanism includes a one-way bearing (13) disposed on the drive roller (12), and the one-way bearing (13) cooperates with the forward rotation of the drive roller (12). A worm gear (17) is fixedly installed on the one-way bearing (13). A linkage rod (14) is rotatably installed inside the recycling box (1), and a worm wheel (18) that cooperates with the worm gear (17) is fixedly installed on the linkage rod (14). A transmission belt (20) is sleeved between the linkage rod (14) and the first transmission rod (19), and a second transmission belt (22) is sleeved between the first transmission rod (19) and the second transmission rod (21). The dispersing mechanism includes two support rollers (26) rotatably installed in the magnetic suction box (10), and each support roller (26) is located between two corresponding suction plates (25). Each support roller (26) is fixedly installed with multiple dispersing wheels (29) for dispersing sludge. Each support roller (26) is fixedly installed with a driven helical gear (31) at the bottom. The water storage cylinder (24) is fixedly installed with two transmission helical gear rings (30) that mesh with the corresponding driven helical gear (31).

7. A magnetic powder recovery device for magnetic coagulation based on water treatment according to claim 6, characterized in that, The water guiding assembly includes a support plate (39) fixedly installed inside the magnetic suction cylinder (11), and the upper part of the magnetic suction cylinder (11) is filled with cleaning water. The magnetic suction cylinder (11) is provided with a water replenishment pipe (7) for replenishing cleaning water. The water guiding pump (38) is installed on the support plate (39), and a transmission mechanism is installed between the water guiding pump (38) and the magnetic suction box (10).

8. A magnetic powder recovery device for magnetic coagulation based on water treatment according to claim 7, characterized in that, The transmission mechanism includes a water injection pipe (16) fixedly connected to the outlet of the water pump (38) for transmitting cleaning water. Both water storage cylinders (24) are rotatably connected to water inlet pipes, and both water inlet pipes are connected to the water injection pipe (16). Both water storage cylinders (24) are fixedly connected to multiple water spray rings (28), and each water spray ring (28) is fixedly connected to a water spray pipe for cleaning the adsorption plate (25). The magnetic suction box (10) and the magnetic suction cylinder (11) are fixedly connected to a transmission pipe (15) for transmitting sewage magnetic powder mixture.

9. A magnetic powder recovery device for magnetic coagulation based on water treatment according to claim 8, characterized in that, The separation assembly includes a stirring roller (35) rotatably mounted inside a magnetic suction cylinder (11), and a helical gear two (34) is fixedly mounted on the lower part of the stirring roller (35). A one-way bearing two (32) is provided on the drive roller (12), and the one-way bearing two (32) cooperates with the reverse rotation of the drive roller (12). A helical gear one (33) that meshes with the helical gear two (34) is fixedly mounted on the one-way bearing two (32). The magnetic suction cylinder (11) is fixedly installed with an electromagnetic adsorption ring (37) for adsorbing magnetic powder. Multiple electric telescopic rods (40) are fixedly installed on the stirring roller (35), and a cleaning scraper (41) for scraping magnetic powder off the electromagnetic adsorption ring (37) is fixedly installed on the driving end of each electric telescopic rod (40). The magnetic suction cylinder (11) is provided with a magnetic suction recycling box (36) for adsorbing magnetic powder. The magnetic suction cylinder (11) is provided with a drain pipe (6) for discharging sewage.

10. A method for recovering magnetic powder for magnetic coagulation based on water treatment, used in the magnetic powder recovery device for magnetic coagulation based on water treatment as described in any one of claims 1-9, characterized in that, Includes the following steps: S1. When recycling magnetic powder, the sludge containing magnetic powder is injected into the magnetic suction box (10) in the recycling box (1) through the sludge inlet pipe (3); S2. Start the drive assembly to drive multiple adsorption discs (25) to rotate, and start multiple electromagnetic adsorption tanks (27) to adsorb magnetic powder in the sludge while rotating. S3. After the magnetic powder adsorption is completed, the water pump (38) and the water guiding component work together to rinse the adsorption plate (25) and the electromagnetic adsorption tank (27), so that the magnetic powder on the electromagnetic adsorption tank (27) is removed and injected into the magnetic suction cylinder (11) with the cleaning water. S4. The starting separation component, in cooperation with the driving component, stirs the sewage magnetic powder mixture and, during the stirring process, the magnetic powder is re-adsorbed by the electromagnetic adsorption ring (37) to achieve complete separation of the magnetic powder and sewage.

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