A magnetic separation device

Abstract

The application relates to the technical field of sewage treatment equipment, in particular to a magnetic separation equipment which comprises an equipment body and a water inlet drainage device, the water inlet drainage device comprises a flow guide plate, a pressing plate and two layers of sealing plates, the flow guide plate is fixed at the bottom of a flow guide channel, the pressing plate is fixed above the flow guide plate and is used for pressing the two layers of sealing plates against the flow guide plate, one layer of the sealing plates is provided with a plurality of first lips, the first lips are respectively turned up and abut against the outer end faces of the magnetic discs, the other layer of the sealing plates is provided with a plurality of clamping structures, the clamping structures comprise two second lips which are oppositely arranged along the length direction of the sealing plates, the two second lips are respectively connected to the flow guide fins on the two sides, the flow guide fins are arranged along the length direction of the sealing plates, the flow guide fins are respectively inserted into the water passing channels of the magnetic disc groups, and the two second lips in each clamping structure are respectively turned up and abut against the two sides of the same magnetic disc. The magnetic separation equipment can effectively avoid the problem of magnetic leakage and is favorable for further improving the water quality of the outlet water.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment equipment technology, specifically to a magnetic separation device. Background Technology

[0002] Magnetic separation equipment (also known as super magnetic separation equipment, super magnetic separator, or magnetic separator) is a common type of wastewater treatment equipment. Existing magnetic separation equipment typically includes a frame, a disk assembly, a drive motor, and a sludge removal mechanism. The frame houses a purification tank for containing water, with a wastewater inlet and a purified water outlet. The disk assembly usually consists of multiple parallel disks, each containing a magnet. The disk assembly is rotatably mounted on the frame and located within the purification tank. The drive motor is connected to the disk assembly to drive its low-speed rotation within the tank. In actual use, when wastewater flows through the channels between the disks, the magnetic flocs in the wastewater are attracted to the disk surface by the magnetic field. As the disks rotate, they are rapidly separated from the wastewater and scraped off by the sludge removal mechanism, thus separating the magnetic flocs from the wastewater and achieving water purification.

[0003] The magnetic disk is the core component of the magnetic separation device. Magnets are typically embedded within the disk and are usually evenly arranged along the circumference of the disk, forming at least one ring around the circumference. Examples include a magnetic disk disclosed in Chinese Patent CN211595121U and a magnetic disk disclosed in Chinese Patent CN222042815U. This allows for the formation of annular magnetic adsorption areas on both sides of the disk, as shown in the attached image. Figure 1 As shown, there is usually a gap between the outer contour of the magnetic adsorption area and the outer end face of the disk, and this area has weaker magnetism and is usually called the non-magnetic area; at the same time, due to limitations in manufacturing and assembly precision, a certain gap usually needs to be reserved between the outer end face of the disk and the bottom plate of the purification tank, as shown in the attached figure. Figure 1 As shown, this ensures the disk assembly can rotate more smoothly relative to the purification tank. In existing semi-countercurrent magnetic separation equipment, such as the disk drive for water treatment disclosed in Chinese Patent CN222042815U, the wastewater inlet is usually located on one side of the purification tank, while the clean water outlet connected to the purification tank is usually located on the bottom plate of the purification tank. This results in the clean water outlet being relatively close to the wastewater inlet, as shown in the attached diagram. Figure 1As shown, during operation, wastewater containing magnetic flocs enters the purification tank through the wastewater inlet. The disk assembly rotates counterclockwise under the drive of the drive motor to adsorb and separate the magnetic flocs in the wastewater. However, due to the close proximity between the clean water outlet and the wastewater inlet, it was found during actual operation that some wastewater entering from the wastewater inlet is directly discharged into the clean water outlet through the gap between the outer end face of the disk and the bottom plate of the purification tank, and then directly discharged from the clean water outlet. This part of the wastewater does not pass through the magnetic adsorption area of ​​the disk assembly, resulting in the magnetic flocs in this part of the wastewater not being adsorbed by the disk, causing magnetic leakage. In addition, some wastewater entering from the wastewater inlet is directly discharged into the gap and / or the clean water outlet through the non-magnetic area on the side of the disk, and then directly discharged from the clean water outlet. This part of the wastewater also does not pass through the magnetic adsorption area of ​​the disk assembly, resulting in the magnetic flocs in this part of the wastewater not being adsorbed by the disk, causing magnetic leakage. Moreover, since the non-magnetic area on the side of the disk is adjacent to the gap, the area prone to magnetic leakage is larger, making the magnetic leakage problem more serious and severely affecting the quality of the effluent, which urgently needs to be solved. Summary of the Invention

[0004] The first aspect of the present invention aims to solve the above-mentioned problems by providing a magnetic separation device that can effectively prevent sewage from being discharged directly through the gap between the outer end face of the magnetic disk and the bottom plate of the purification tank, avoid the problem of magnetic leakage, and further improve the quality of the effluent.

[0005] A magnetic separation device includes a device body and a water inlet diversion device. The device body includes a frame and a disk array. The disk array includes multiple coaxially arranged disks, each containing a magnet, with a water passage formed between adjacent disks. The rack includes a flow channel and a purification tank for accommodating the disk array. One end of the flow channel corresponds to the side of the disk array, and the other end is connected to a wastewater inlet. The water inlet device includes a flow guide plate, a pressure plate, and two sealing plates. The flow guide plate is fixed to the bottom of the flow channel, and the pressure plate is fixed above the flow guide plate, pressing the two sealing plates against the flow guide plate. The flow guide plate supports the sealing plates. One end of one sealing plate has multiple first lips, each first lip spaced apart along the width of the sealing plate. The lips are located outside the pressure plate, and each first lip is turned up and abuts against the outer end face of each disk. One end of the other sealing plate is constructed with multiple clamping structures. Each clamping structure is distributed at intervals along the width direction of the sealing plate. Each clamping structure is located outside the pressure plate and is adapted to each disk. The clamping structure includes two second lips arranged opposite to each other along the length direction of the sealing plate. The two second lips are connected to the guide vanes on both sides. The guide vanes are arranged along the length direction of the sealing plate and are inserted into the water passages of the disk group. The two second lips in each clamping structure are turned up and abut against the two sides of the same disk.In this solution, a water inlet guiding device is configured at the bottom of the flow channel in the device body. This device guides the input wastewater smoothly through the gap between the disk and the purification tank, as well as the non-magnetic area on the disk. This allows the wastewater to directly enter the magnetic adsorption area of ​​the disk in the disk assembly, effectively preventing the wastewater from being discharged directly into the clean water outlet through the non-magnetic area of ​​the disk and / or the gap between the disk and the purification tank, thus avoiding magnetic leakage. Multiple first lips are configured at one end of one of the sealing plates, with each first lip spaced apart along the width of the sealing plate. Each first lip is flipped upwards and abuts against the outer end face of each disk. Through the cooperation between the first lip and the outer end face of the disk, the first lip remains abutting against the outer end face of the disk during disk rotation. This effectively prevents wastewater from draining directly through the gap between the outer end face of the disk and the purification tank, avoiding magnetic leakage at the outer end face of the disk and improving the quality of the effluent. Multiple clamping structures are configured at one end of another sealing plate, with each clamping structure spaced apart along the width of the sealing plate. Each clamping structure includes two first lips arranged opposite each other along the length of the sealing plate. The two second lips are connected to the guide vanes on both sides. Each guide vane is inserted into the water passage of the disk assembly. The two second lips in each clamping structure are flipped upwards and abut against the sides of the same disk. This ensures that the second lips remain against the disk sides during disk rotation, effectively preventing wastewater from flowing directly through the non-magnetic area on the disk side. This avoids magnetic leakage at the non-magnetic area and improves the quality of the discharged water. Through the coordinated action of the first lip, second lip, guide vanes, and disk, wastewater can be effectively prevented from flowing away. Wastewater is discharged directly through the gap between the outer end face of the disk and the purification tank or through the non-magnetic area on the side of the disk, forcing the input wastewater to pass through the magnetic adsorption area of ​​the disk, eliminating the problem of magnetic leakage and further improving the quality of the effluent. By configuring a guide plate and a pressure plate, and stacking and clamping two layers of sealing plates between the guide plate and the pressure plate, the flatness of the sealing plates can be maintained and the sealing plates can be firmly fixed. This ensures the fitting accuracy of the first lip, the second lip, the guide plate and the disk, which can further prevent the problem of wastewater being directly discharged into the clean water outlet, thus helping to further improve the quality of the effluent.

[0006] Furthermore, the end of the guide plate facing away from the sewage inlet extends at least to the outer contour of the magnetic adsorption area in the disk. This is more conducive to guiding sewage into the magnetic adsorption area of ​​the disk, effectively preventing sewage from being discharged directly through the non-magnetic area of ​​the disk and / or the gap between the disk and the purification tank, solving the problem of magnetic leakage, and further improving the quality of the effluent.

[0007] Preferably, the end of the second lip facing away from the sewage inlet extends at least to the outer contour of the magnetic adsorption area in the disk. This facilitates better water blocking on the side of the disk, preventing sewage from directly entering the non-magnetic area below and / or the gap between the disk and the purification tank through the gap between the second lip and the disk. This also achieves better anti-magnetic leakage effect, thereby further improving the quality of the effluent.

[0008] Preferably, the first lip, after being flipped up, has a downward elasticity, ensuring that it always remains against the outer end face of the disk; and / or, the second lip, after being flipped up, has a downward elasticity, ensuring that it always remains against the side of the disk. This ensures that during disk rotation, the first lip remains in contact with the outer end face of the disk under the combined action of its own elasticity and the inlet water pressure, with greater pressure between them, which is more conducive to preventing magnetic leakage at the outer end face of the disk; simultaneously, the second lip remains in contact with the side of the disk under the combined action of its own elasticity and the inlet water pressure, with greater pressure between them, which is more conducive to preventing magnetic leakage in the non-magnetic areas of the disk, thereby further improving the quality of the outgoing water.

[0009] Preferably, the sealing plate is made of rubber, which makes the first and second lips elastic.

[0010] Preferably, adhesive is provided between the sealing plate and the guide plate; adhesive is provided between the sealing plates; and adhesive is provided between the sealing plate and the pressure plate. This facilitates a more secure restraint of the sealing plate, prevents the sealing plate from being lifted by sewage, reduces the contact area between sewage and the sealing plate, and thus helps to improve the service life of the sealing plate.

[0011] The second aspect of this invention addresses the problem of preventing the first lip from obstructing sewage from entering the water passage. Further, the width of the first lip is W1, where W ≤ W1 ≤ W + 2h, and L1 + W1 = W0 + W, where L1 is the distance between two adjacent first lips, W is the thickness of the disk, W0 is the width of the water passage, and h is the thickness of the sealing plate. This makes the width of the first lip more suitable for the thickness of the disk, achieving better anti-magnetic leakage at the outer end face of the disk while preventing the first lip from being too wide and causing greater resistance to sewage entering the water passage.

[0012] To address the issue of facilitating the installation and replacement of the sealing plate, the flow guiding channel further includes an inlet base plate for guiding the flow, and a pressure plate is detachably installed on the flow guiding plate or the inlet base plate; the flow guiding plate is detachably installed on the inlet base plate. This facilitates the installation and replacement of the sealing plate.

[0013] Preferably, the water inlet base plate is connected to the base plate of the purification tank, and the base plate of the purification tank is constructed as an arc-shaped structure adapted to the disk assembly.

[0014] The second aspect of this invention addresses the problem of easier installation and replacement of the sealing plates without the risk of leakage. Further, the upper surface of the inlet base plate is provided with at least two screws; the guide plate has mounting holes adapted to each screw; the sealing plate has through holes adapted to each screw; and the pressure plate has assembly holes adapted to each screw. The guide plate is fitted onto the screws through the mounting holes; the two sealing plates are respectively fitted onto the screws through the through holes and are located above the guide plate; the pressure plate is fitted onto the screws through the assembly holes and is located above the sealing plates; and a nut is provided above the sealing plates, with the nut threadedly connected to the screws. In this solution, screws are configured on the inlet base plate, and suitable mounting holes, through holes, and assembly holes are respectively configured on the guide plate, sealing plate, and pressure plate. The positioning and installation of the sealing plate are achieved by the cooperation of the screws with the mounting holes, through holes, and assembly holes. This not only facilitates the assembly and replacement of the sealing plate, but also enables more efficient and reliable assembly. Moreover, there is no need to configure through holes on the inlet base plate, thus eliminating the need for sealing elements to prevent water leakage and avoiding the risk of water leakage due to the aging of sealing elements.

[0015] The third aspect of this invention addresses the problem of improving the lifespan of the sealing plate while ensuring better magnetic leakage prevention. Furthermore, the vias are strip holes, with the length direction of the strip holes aligned with the length direction of the sealing plate. This allows for adjustable spacing between the sealing plate and the disk assembly during installation and debugging. This facilitates adjustment of the friction between the first lip and the outer end face of the disk, as well as the friction between the second lip and the side surface of the disk. This not only ensures that the first and second lips adhere closely to the disk for better magnetic leakage prevention but also effectively protects the first and second lips, thus extending the lifespan of the sealing plate.

[0016] Furthermore, the mounting holes are strip holes, with their length aligned with the length of the guide plate. This allows for adjustable spacing between the guide plate and the disk assembly during installation and adjustment. This not only significantly reduces the gap between the inlet base plate and the disk, lowering the possibility of magnetic leakage, but also better supports the upper sealing plate, ensuring a more stable fit between the first and second lips and the disk.

[0017] Furthermore, an extension piece connected to the sealing plate is provided between two adjacent first lips. The width of the extension piece is less than or equal to the width of the water passage. Each extension piece is inserted into its respective water passage, and the extension piece and the guide piece are stacked on top of each other. By configuring the extension piece between two adjacent first lips and inserting it into the water passage, the extension piece and the guide piece are stacked on top of each other. This not only improves the stability and reliability of the first lips, but also improves the rigidity and strength of the guide piece, helps resist the deformation of the guide piece under the impact of water flow, and ensures that the second lip more stably abuts against both sides of the disk, achieving a better anti-magnetic leakage effect.

[0018] The fourth aspect of this invention addresses the improvement issue by further constructing multiple insertion portions at one end of the guide plate. These insertion portions are spaced apart along the width of the guide plate, with the width of each insertion portion being smaller than the width of the water passage. Each insertion portion is inserted into a water passage of the disk assembly, and each guide plate is disposed at a specific insertion portion. In this solution, the insertion portions provide more stable support for the portion of the sealing plate inserted into the water passage, such as the guide plates and extension plates. This enhances the stability of this part of the structure, making it less prone to displacement or deformation due to external interference. It ensures that the first and second lips fit tightly against the disk, improving the stability of the first and second lips and contributing to a better anti-magnetic leakage effect.

[0019] Preferably, the end of the insertion part facing away from the sewage inlet extends at least to the outer contour of the magnetic adsorption area in the disk. This is more conducive to guiding sewage into the magnetic adsorption area of ​​the disk, effectively preventing sewage from being discharged directly through the non-magnetic area of ​​the disk and / or the gap between the disk and the purification tank, solving the problem of magnetic leakage, and further improving the quality of the effluent.

[0020] Furthermore, it also includes a pressure block for the insertion part, which is positioned above the uppermost sealing plate. The pressure block is connected to the insertion part below by fasteners and presses the guide vane and / or extension vane tightly against the insertion part of the guide plate. This not only facilitates the disassembly and replacement of the sealing plate, but also helps to more securely fix the guide vane and extension vane, preventing them from being lifted up by the water flow and affecting water intake and uniform water distribution, and also helps to achieve a better anti-magnetic leakage effect.

[0021] Compared with the prior art, the magnetic separation device provided by the present invention can not only prevent sewage from being discharged directly through the gap between the outer end face of the disk and the purification tank, but also prevent sewage from being discharged directly through the non-magnetic area on the side of the disk, thereby effectively avoiding the problem of magnetic leakage and further improving the quality of the effluent. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of an existing magnetic separation device.

[0023] Figure 2 This is a schematic diagram of the structure of a magnetic separation device provided in Embodiment 1 of the present invention.

[0024] Figure 3 for Figure 2 A partially enlarged schematic diagram of the water inlet diversion device.

[0025] Figure 4 This is a schematic diagram of a sealing plate provided in Embodiment 1 of the present invention, in which the first lip is in the initial state.

[0026] Figure 5This is a schematic diagram of a sealing plate provided in Embodiment 1 of the present invention, in which the first lip is in an upward-curved state.

[0027] Figure 6 This is a schematic diagram of another sealing plate provided in Embodiment 1 of the present invention, in which the second lip is in the initial state.

[0028] Figure 7 This is a schematic diagram of another sealing plate provided in Embodiment 1 of the present invention, in which the second lip is in an upturned state.

[0029] Figure 8 This is a schematic diagram of the structure after the two types of sealing plates are stacked together.

[0030] Figure 9 This is a partial three-dimensional structural schematic diagram of a magnetic separation device provided in Embodiment 1 of the present invention.

[0031] Figure 10 for Figure 9 A magnified view of a portion of point I in the middle.

[0032] Figure 11 This is a partial top view of a magnetic separation device provided in Embodiment 1 of the present invention.

[0033] Figure 12 This is a partial top view of another magnetic separation device provided in Embodiment 1 of the present invention.

[0034] Figure 13 This is a schematic diagram of the structure of a guide plate provided in Embodiment 2 of the present invention.

[0035] Figure 14 This is a partial cross-sectional view of the water inlet diversion device in a magnetic separation device provided in Embodiment 2 of the present invention.

[0036] Figure 15 This is a partial three-dimensional structural diagram of the water inlet diversion device in the magnetic separation equipment provided in Embodiment 2 of the present invention.

[0037] Figure 16 This is a partial top view of a magnetic separation device provided in Embodiment 2 of the present invention.

[0038] Figure 17 This is a schematic diagram of the structure of a flow guide plate provided in Embodiment 3 of the present invention.

[0039] Figure 18 This is a schematic diagram of a sealing plate provided in Embodiment 3 of the present invention, in which the first lip is in the initial state.

[0040] Figure 19 This is a schematic diagram of another sealing plate provided in Embodiment 3 of the present invention, in which the second lip is in the initial state.

[0041] Figure 20 This is a schematic diagram of the structure of a pressure plate provided in Embodiment 3 of the present invention.

[0042] Figure 21 This is a partial structural diagram of the sewage inlet in a magnetic separation device provided in Embodiment 4 of the present invention.

[0043] Explanation of markings in the diagram: Frame 1, Purification tank 11, Base plate 12, Side wall 13, Connecting port 14, Connecting pipe 15, Sewage inlet 16, Guide channel 17, Clean water outlet 18, Gap 19; Disk assembly 2, Disk 21, Outer end face 22, Magnetic adsorption area 23, Outer contour 24, Water passage 25, Support component 26, Scraper strip 27, Screw conveyor mechanism 28, Inner contour 29; Water inlet base plate 3, Side plate 31, Screw 32 Nut 33, water inlet baffle 34; water inlet diversion device 4, guide plate 41, mounting hole 42, insertion part 43, pressure plate 44, assembly hole 45, sealing plate 46, through hole 47; first lip 51, extension piece 52, seam 53; clamping structure 6, second lip 61, guide plate 62, elastic bayonet 63, main seam 64, side seam 65; pressure block 7, self-tapping screw 71; water spray pipe 8, nozzle 81, partition 82, defoaming space 83. Detailed Implementation Example 1

[0044] This embodiment provides a magnetic separation device, including a device body and a water inlet diversion device 4. The device body includes a frame 1, a disk assembly 2, and a drive motor. Figure 1 and Figure 2 As shown, rack 1 is equipped with a purification tank 11 for accommodating wastewater and disk array 2. The purification tank 11 provides a place for wastewater purification. In implementation, the shape of the purification tank 11 can be determined according to actual needs. For example, Figure 2 As shown, the bottom plate of the purification tank 11 can be constructed as an arc-shaped structure to fit the disk group 2.

[0045] In implementation, the disk assembly 2 includes a support member 26 and at least two disks 21, each disk 21 being spaced apart from the support member 26. The support member 26 is rotatably mounted on a bearing seat of the rack 1 via bearings, and each disk 21 is located within a purification tank 11. The entire disk assembly 2 has a degree of freedom of rotation relative to the rack 1 and the purification tank 11. A drive motor can be mounted on the rack 1 and is connected to the support member 26 via a transmission mechanism, so that the drive motor drives the support member 26 to rotate at a low speed, and the rotation of the support member 26 drives the disks 21 to rotate synchronously. In implementation, the transmission mechanism includes, but is not limited to, gear transmission mechanisms, belt transmission mechanisms, and chain transmission mechanisms. The support member 26 can be an existing shaft or rod.

[0046] like Figure 2 As shown, in implementation, a magnet is disposed inside the disk 21, and the magnet is arranged along the circumference of the disk 21 and forms at least one ring, thereby forming annular magnetic adsorption areas 23 on both sides of the disk 21, as shown. Figure 2 The area between the outer contour 24 and the inner contour 29; in disk group 2, each disk 21 is arranged coaxially, and the gap between two adjacent disks 21 forms a water passage 25. Due to limitations in manufacturing and assembly precision, during implementation, a gap 19 also exists between the outer end face 22 of the disk 21 and the bottom of the purification tank 11, such as... Figure 2 As shown, this ensures that disk group 2 can rotate more smoothly relative to the purification tank 11.

[0047] like Figure 2 As shown, in implementation, a wastewater inlet 16 is provided on one side of the rack 1. The wastewater inlet 16 is connected to the purification tank 11, and the wastewater inlet 16 is located on one side of the entire disk group 2. For example, as shown... Figure 2 As shown, the wastewater inlet 16 can be located on one side of the disk group 2, corresponding to the middle position of the disk group 2. In implementation, a slag unloading mechanism adapted to the disk group 2 is also provided on the other side of the rack 1. The slag unloading mechanism and the wastewater inlet 16 are located on opposite sides of the disk group 2, as shown. Figure 2 As shown, the slag unloading mechanism is equipped with a slag scraper 27 adapted to the disk 21 and a screw conveyor 28 adapted to the slag scraper 27, all of which can be implemented using existing technologies. Simultaneously, the frame 1 is also equipped with a purified water outlet 18, which is connected to the purification tank 11 to discharge purified water. In implementation, the location of the purified water outlet 18 can be determined according to actual needs. For example, in some embodiments, the purified water outlet 18 can be located at the bottom of the purification tank 11 so that water can exit from the bottom of the purification tank 11. Figure 2 As shown; in other embodiments, the clean water outlet 18 and the sewage inlet 16 can be respectively located on both sides of the purification tank 11, that is, the clean water outlet 18 and the sludge unloading mechanism can be located on the same side of the disk assembly 2 so that water can enter from one side of the purification tank 11 and exit from the other side.

[0048] like Figure 2As shown, in practice, a flow channel 17 is usually configured between the sewage inlet 16 and the disk group 2. One end of the flow channel 17 is connected to the sewage inlet 16, and the other end corresponds to the side of the disk group 2, so that the sewage can be diverted to the side of the disk group 2 through the flow channel 17, so as to achieve the effect of water entering from the side of the disk group 2. In one embodiment, the flow channel 17 can be an independent channel, with one end connected to an opening on one side of the purification tank 11, corresponding to the side of the disk assembly 2, and the other end extending to and connected to the sewage inlet 16. In another embodiment, the flow channel 17 can also be part of the purification tank 11, making the structure of the entire magnetic separation device more compact. That is, a flow channel 17 for guiding flow is formed on one side of the purification tank 11, with one end of the flow channel 17 corresponding to one side of the disk assembly 2. In this case, the sewage inlet 16 can be directly opened on the side wall 13 of the purification tank 11. Alternatively, in implementation, the sewage inlet 16 can also be located away from the flow channel 17, with a connecting port 14 opened on the side wall 13 of the purification tank 11. The connecting port 14 is connected to the flow channel 17, and the connecting port 14 is connected to the sewage inlet 16 through a connecting pipe 15. In implementation, the connecting pipe 15 can be a square pipe or a round pipe, etc.

[0049] As an example, in this embodiment, such as Figure 2 As shown, a flow channel 17 for guiding the flow is formed on one side of the purification tank 11. Meanwhile, a communication port 14 is provided on the side wall 13 of the purification tank 11, such as... Figure 2 As shown, the flow channel 17 includes an inlet base plate 3 for flow guidance. One end of the inlet base plate 3 is connected to the bottom plate of the purification tank 11, and the other end extends towards the sewage inlet 16 and is connected to the side wall 13 with the communication port 14. Figure 2 As shown, correspondingly, side plates 31 (which are also part of the purification tank 11) are respectively provided on both sides of the inlet bottom plate 3. The side plates 31 and the inlet bottom plate 3 together form a flow guiding channel 17 for guiding the flow. The flow guiding channel 17 is connected to the connecting port 14. A connecting pipe 15 is also provided on the outside of the connecting port 14. One end of the connecting pipe 15 is fixed to the side wall 13 of the purification tank 11 and is connected to the connecting port 14. The other end of the connecting pipe 15 forms the sewage inlet 16, as shown. Figure 2 As shown. In implementation, the connecting pipe 15 is preferably a square pipe, which facilitates a more stable input of sewage into the purification tank 11 and avoids more turbulence and disturbance, which would cause the magnetic flocs in the sewage to be dispersed.

[0050] In implementation, the inlet base plate 3 can be arranged horizontally; the inlet base plate 3 can also be arranged at an angle, such as... Figure 2 and Figure 3As shown, the side closer to disk assembly 2 is lower, and the side closer to sewage inlet 16 is higher, which guides the sewage to flow obliquely downwards towards disk assembly 2. This not only facilitates a larger contact area between the sewage and disk assembly 2, but also increases the contact time between disk 21 and sewage, thus making it more effective for disk assembly 2 to adsorb magnetic flocs in the sewage. It can be understood that the top of the flow channel 17 can be closed with a top cover or left open.

[0051] In this embodiment, the water inlet diversion device 4 includes a guide plate 41, a pressure plate 44, and two sealing plates 46, wherein, as shown... Figure 3 and Figure 9 As shown, the guide plate 41 is fixed to the inlet base plate 3. The guide plate 41 is mainly used to support the sealing plate 46. In implementation, the guide plate 41 is arranged parallel to the inlet base plate 3 so that the sewage can continue to flow into the disk assembly 2 along the flow direction of the inlet base plate 3. The guide plate 41 can be made of metal plate, such as stainless steel plate, aluminum alloy plate, etc. In this case, the guide plate 41 can be welded or riveted to the inlet base plate 3, or it can be detachably installed to the inlet base plate 3 by fasteners. The guide plate 41 can also be made of non-metallic plate, such as polyurethane plate, PVC plate, ABS plate, PP plate, carbon fiber plate, etc. In this case, the guide plate 41 can be pasted to the inlet base plate 3 by adhesive, or it can be detachably installed to the inlet base plate 3 by fasteners. For example, the guide plate 41 can be installed to the inlet base plate 3 by bolts or screws.

[0052] like Figure 2 and Figure 3 As shown, two layers of sealing plates 46 are stacked along the height direction on the upper surface of the guide plate 41. Simultaneously, a pressure plate 44 is positioned above the two layers of sealing plates 46, fixed to the guide plate 41 or the inlet bottom plate 3, and presses the two layers of sealing plates 46 tightly against the guide plate 41. Figure 3As shown, this prevents the sealing plate 46 from detaching under the impact of water flow. To facilitate subsequent maintenance and replacement of the two sealing plates 46, in practice, the pressure plate 44 is detachably installed on the guide plate 41 or the inlet base plate 3. For example, the pressure plate 44 can be detachably installed on the guide plate 41 using fasteners. More specifically, for example, in one embodiment, the guide plate 41 is made of polyurethane board, and the inlet base plate 3 has at least two through holes. Correspondingly, the guide plate 41 has at least two matching mounting holes 42, and the two sealing plates 46 are respectively constructed with matching... Each mounting hole 42 has a through hole 47, and the pressure plate 44 is constructed with an assembly hole 45 adapted to each through hole 47. During assembly, bolts are passed through the through hole, mounting hole 42, through hole 47, and assembly hole 45 in sequence, and nuts 33 are threaded onto the bolts. By tightening the nuts 33, the pressure plate 44 and the guide plate 41 can be securely fixed to the water inlet base plate 3. Since the sealing plate 46 is sandwiched between the pressure plate 44 and the guide plate 41, the sealing plate 46 can be kept flat and securely fixed. In actual implementation, since through holes need to be constructed in the water inlet base plate 3, not only are sealing components (such as gaskets) required to prevent water leakage, but the sealing components are also prone to aging, posing a risk of water leakage during long-term operation.

[0053] Therefore, in another embodiment provided in this example, at least two screws 32 are provided on the upper surface of the water inlet base plate 3, such as... Figure 3 and Figure 9 As shown, the lower end of the screw 32 can be welded to the water inlet base plate 3, and the screw 32 can be perpendicular to the water inlet base plate 3; correspondingly, as Figure 4 and Figure 5 As shown, the guide plate 41 is constructed with mounting holes 42 adapted to each screw 32, and the sealing plate 46 is constructed with through holes 47 adapted to each mounting hole 42, as shown. Figure 6 and Figure 7 As shown, the pressure plate 44 is constructed with mounting holes 45 adapted to each through hole 47; during assembly, the guide plate 41 is sleeved onto the screw 32 through the mounting hole 42, and the two sealing plates 46 are respectively sleeved onto the screw 32 through the through holes 47 and positioned above the guide plate 41. The pressure plate 44 is sleeved onto the screw 32 through the mounting hole 45 and positioned above the sealing plates 46. A nut 33 is threaded onto the screw 32. By tightening the nut 33, the pressure plate 44 and the guide plate 41 can be securely fixed to the inlet bottom plate 3. The pressure plate 44 can also be used to flatten and securely fix the sealing plates 46 to the guide plate 41. Figure 3 and Figure 9 As shown.

[0054] It is understandable that, during implementation, the position of the screw 32 can be determined according to actual needs, and the position of the mounting hole 42 can be adapted to each screw 32. As a preferred option, such as... Figure 9As shown, each screw 32 is arranged along the width direction of the water inlet base plate 3. Correspondingly, the mounting hole 42, through hole 47, and assembly hole 45 are arranged along the width direction, which facilitates more efficient and reliable assembly. In this embodiment, the mounting hole 42, through hole 47, and assembly hole 45 can all be round holes, such as... Figures 4-7 As shown, it is easy to process and shape.

[0055] In this embodiment, after the guide plate 41 is fixed, the end of the guide plate 41 away from the sewage inlet 16 extends to a position closer to the outer end face 22 of the disk, such as... Figure 3 and Figure 5 As shown, in order to further reduce the gap 19 between the outer end face 22 of the disk and the water inlet base plate 3, during implementation, the distance between the end of the guide plate 41 and the outer end face 22 of the disk can be preferably controlled to 0.2-15mm in order to better support the upper sealing plate 46.

[0056] For ease of description, in this embodiment, the two sealing plates 46 are respectively the first sealing plate 46 and the second sealing plate 46; in practice, the thickness of the two sealing plates 46 can be the same, the width of the two sealing plates 46 (the direction along the rotation axis of the disk group 2 is the width direction, which will not be described again later) can be the same, and the length of the two sealing plates 46 (perpendicular to the width direction) can also be the same, such as Figure 3 As shown; in this embodiment, the width of the sealing plate 46 is greater than or equal to the maximum distance between the two disks 21 at the end of the disk group 2 (i.e., the distance between the outer surfaces of the two disks 21 at the end) so as to accommodate all disks 21 in the disk group 2; correspondingly, in implementation, the width of the guide plate 41 is greater than or equal to the width of the sealing plate 46 so as to better support each layer of sealing plate 46.

[0057] In this embodiment, one of the sealing plates 46 (e.g., the first sealing plate 46) has a plurality of first lips 51 constructed on the end opposite to the sewage inlet 16. The first lips 51 are distributed at intervals along the width direction of the sealing plate 46 and arranged in a row, such as... Figures 3-5 As shown, each first lip 51 is connected to the sealing plate 46. The first lip 51 is preferably square (of course, it can also be trapezoidal, etc., which will not be elaborated here). The width W1 of the first lip 51 is greater than or equal to the thickness W of the disk 21, so as to abut against the outer end face 22 of the disk 21. The first lips 51 are spaced apart, and the distance between two adjacent first lips 51 is L1 (the minimum distance between two adjacent first lips 51). Figure 5As shown, the spacing L1 is less than or equal to the width W0 of the water passage 25 between two adjacent disks 21; in implementation, the thickness of the sealing plate 46 is h, L1 is preferentially controlled as: W0-2h≤L1≤W0, W1 is preferentially controlled as: W≤W1≤W+2h, and L1+W1=W0+W, ensuring that the raised first lip 51 will not block sewage from entering the water passage 25; as an example, in this embodiment, the width of the first lip 51 is equal to the thickness of the disk 21, and the spacing between two adjacent first lips 51 is equal to the width of the water passage 25 between two adjacent disks 21, so that after assembly, each first lip 51 can correspond to and contact the outer end face 22 of each disk 21 in the disk group 2. More specifically, the sealing plate 46 has a certain elasticity, so when the sealing plate 46 is not installed, each first lip 51 is flush with the sealing plate 46, and the entire sealing plate 46 is flat, as shown. Figure 3 and Figure 4 As shown, the first lip 51 is located outside the end of the guide plate 41 so as to mate with the outer end face 22 of the disk 21; when the sealing plate 46 is clamped between the pressure plate 44 and the guide plate 41, the sealing plate 46 is tightly attached to the guide plate 41, and the first lip 51 at the end of the guide plate 41 is turned upward (because at the position of the first lip 51, the disk 21 rotates from bottom to top) and attached to the outer end face 22 of the disk 21, as shown. Figure 9 and Figure 10 As shown, because the sealing plate 46 is elastic, the first lip 51 has the elasticity to restore its flat state, thereby creating a certain elastic pressure between the first lip 51 and the outer end face 22 of the disk 21. This ensures that the first lip 51 can continuously abut against the outer end face 22 of the disk 21, which not only effectively prevents the first lip 51 from completely detaching from the outer end face 22 of the disk 21, but also effectively eliminates the gap 19 between the guide plate 41 and the outer end face 22 of the disk, preventing sewage from flowing directly to the clean water outlet 18 through the gap 19 and affecting the quality of the effluent.

[0058] In implementation, the first lip 51 can be formed in various ways. For example, in one embodiment, excess material can be removed from one end of the sealing plate 46 by cutting or trimming to form each first lip 51. In this case, there is a notch between two adjacent first lips 51, and the end of the entire sealing plate 46 forms a concave-convex structure. In another embodiment, the sealing plate 46 adopts a rectangular structure, and multiple sets of slits spaced apart along the width direction of the sealing plate 46 are processed at one end of the sealing plate 46 by a tool or cutting. Each set of slits includes two slits 53 extending along the length direction of the sealing plate 46, such as... Figure 4 As shown, a first lip 51 is formed between the two seams 53 in each group of seams, as... Figure 5As shown, an extension piece 52 is formed between two adjacent first lips 51, connecting to the sealing plate 46. Along the width direction of the sealing plate 46, the first lips 51 and the extension pieces 52 are spaced apart from each other, as shown... Figure 5 As shown, the width of the extension piece 52 is less than or equal to the width of the water passage 25; during assembly, each extension piece 52 is inserted into each water passage 25, and each first lip 51 is flipped upwards and fits against the outer end face 22 of the corresponding disk 21, as shown. Figure 10 and Figure 11 As shown.

[0059] In this embodiment, a plurality of clamping structures 6 are constructed on the end of another sealing plate 46 (e.g., the second sealing plate 46) facing away from the sewage inlet 16. Each clamping structure 6 is distributed at intervals along the width direction of the sealing plate 46 and arranged in a row, such as... Figure 6 and Figure 7 As shown, each clamping structure 6 is designed to mate with each disk 21. In practice, the number of clamping structures 6 is equal to the number of disks 21 in the disk group 2. In practice, the clamping structure 6 includes two second lips 61 arranged opposite each other along the length of the sealing plate 46. When the two second lips 61 are flipped upwards, a flexible latch 63 adapted to the disk 21 is formed between the two second lips 61, as shown. Figure 7 As shown, in implementation, guide vanes 62 arranged along the length of the sealing plate 46 are respectively constructed on both sides of the elastic bayonet 63. Two second lips 61 in the clamping structure 6 are respectively connected to the guide vanes 62 on both sides, and the second lips 61 have the freedom to be flipped upwards relative to the guide vanes 62. In implementation, the guide vanes 62 are used to insert into the water passage 25 between two adjacent disks 21 in the disk group 2. Therefore, in implementation, the width of the guide vanes 62 is less than or equal to the width of the water passage 25 between two adjacent disks 21, so as to insert them into the water passage 25 more smoothly and avoid interference during assembly. After assembly, the two second lips 61 in the same clamping structure 6 are flipped upwards and respectively abut against both sides of the same disk 21. The guide vanes 62 and the second lips 61 have sufficient length, such as... Figure 10 and Figure 11 As shown, ensure that the guide vane 62 and the second lip 61 extend at least to the outer contour 24 of the magnetic adsorption region 23. For example, in implementation, the end of the guide vane 62 and the second lip 61 facing away from the sewage inlet 16 extends to the outer contour 24 of the magnetic adsorption region 23. Alternatively, in implementation, the end of the guide vane 62 and the second lip 61 facing away from the sewage inlet 16 can be inserted into the magnetic adsorption region 23. Figure 3 or Figure 10As shown; because the sealing plate 46 is elastic, the second lip 61, after being flipped up, has the elasticity to return to a flat state, thereby creating a certain elastic pressure between the second lip 61 and the side of the disk 21, ensuring that the second lip 61 can continuously press against the side of the disk 21, as shown. Figure 10 As shown, the purpose of using the second lip 61 to clamp the disk 21 is achieved. This not only effectively prevents the second lip 61 from completely detaching from the side of the disk 21, but also eliminates the gap between the magnetic adsorption area 23 and the outer end face 22 of the disk in the non-magnetic area. Furthermore, the guide plate 62 can guide the sewage outside the disk assembly 2 directly into the area covered by the magnetic adsorption area 23, so that the magnetic adsorption area 23 can adsorb the magnetic flocs in the sewage. This prevents the sewage from flowing directly through the non-magnetic area to the clean water outlet 18 through the gap between the magnetic adsorption area 23 and the outer end face 22 of the disk, thereby further improving the quality of the effluent.

[0060] In actual operation, the guide vane 62 can be tensioned within the water passage 25 between two adjacent disks 21 via the second lips 61 on both sides. The disk 21 rotates relative to the first lip 51 and the second lip 61, resulting in sliding friction between the disk 21 and both the first lip 51 and the second lip 61. Because the second lips 61 on both sides of the guide vane 62 elastically flip upwards, the guide vane 62 and the second lips 61 on both sides can form a relatively more stable U-shaped structure, such as... Figure 7 and Figure 8 As shown, and because the sealing plate 46 has a certain thickness, the sewage flowing along the length of the sealing plate 46 can exert downward pressure on the guide plate 62. The direction of the downward pressure is opposite to the direction of the friction force borne by the second lip 61, so as to use the downward pressure to offset at least part of the friction force borne by the second lip 61. This ensures that during the rotation of the disk assembly 2, the guide plate 62 is not easily bent under the action of the friction force of the disk 21 and the impact force of the water flow. The guide plate 62 and the sealing plate 46 are in a basically parallel state, as shown. Figure 10 As shown, this is to guide the wastewater into the magnetic adsorption area 23, thereby facilitating a better diversion effect.

[0061] In practice, the clamping structure 6 can be implemented in various ways. For example, in this embodiment, the second sealing plate 46 adopts a rectangular structure. Multiple sets of slits spaced apart along the width direction of the sealing plate 46 are processed at one end of the sealing plate 46 by means of a tool or cutting. Each set of slits includes a main slit 64 extending along the length direction of the sealing plate 46 and two side slits 65 respectively connected to one end of the main slit 64. Figure 6 As shown, the main seam 64 and the two side seams 65 can form a Y-shaped structure or a T-shaped structure. For example, Figure 6As shown, two side seams 65 are perpendicularly connected to the main seam 64, forming a T-shaped structure with the main seam 64 and the two side seams 65. The width of the side seams 65 is typically equal to the width of the second lip 61. Therefore, during implementation, the width of the second lip 61 can be precisely controlled by controlling the length of the side seams 65, ensuring that the second lip 61 has sufficient length to achieve better contact and fit with the disk 21. Simultaneously, as... Figure 6 As shown, the length of the main slit 64 is typically equal to the length of the second lip 61. Therefore, in implementation, the length of the second lip 61 can be precisely controlled by controlling the length of the main slit 64, ensuring that the second lip 61 extends to the magnetic adsorption area 23 of the disk 21. The area between two adjacent sets of slits forms the guide vane 62, as shown... Figure 6 and Figure 7 As shown, during implementation, the spacing between the edge seams 65 in two adjacent sets of gaps is usually equal to the width of the guide plate 62. Therefore, during implementation, the width of the guide plate 62 can be precisely controlled by controlling the spacing between the edge seams 65 in two adjacent sets of gaps, ensuring that the guide plate 62 remains relatively flat after being inserted between two adjacent disks 21, without wrinkles or warping. At the same time, it ensures that there is sufficient pressure between the second lip 61 and the disk 21 to prevent untreated sewage from being discharged without passing through the magnetic adsorption area 23.

[0062] In implementation, the stacking order of the two sealing plates 46 can be determined according to actual needs. The first sealing plate 46 can be placed below and the second sealing plate 46 above, or vice versa. For example, the second sealing plate 46 is placed on the guide plate 41, and the first sealing plate 46 is placed above the second sealing plate 46 and fixed by the pressure plate 44. Each guide vane 62 at one end of the second sealing plate 46 is inserted into each water passage 25 of the disk assembly 2. The two second lips 61 in each clamping structure 6 are flipped upwards and clamped to both sides of the disk 21. Figure 10 and Figure 11 As shown, simultaneously, each of the first lips 51 at one end of the first sealing plate 46 is flipped upwards and abuts against the outer end face 22 of each disk 21, as shown. Figure 10 and Figure 11 As shown, when the first sealing plate 46 is equipped with extension pieces 52, each extension piece 52 is inserted into each water passage 25, and each extension piece 52 is stacked on top of each guide piece 62, which is more conducive to preventing the extension piece 52 from deforming and improving the stability of the extension piece 52. At the same time, the two sides of the extension piece 52 can respectively abut against the second lip 61, so that the second lip 61 fits the disk 21 more closely, greatly increasing the contact area between the second lip 61 and the side of the disk 21, thereby helping to achieve a better anti-magnetic leakage effect.

[0063] In implementation, the sealing plate 46 can be made of rubber to provide the required elasticity; of course, the sealing plate 46 can also be made of silicone rubber, fluororubber, etc. In implementation, an adhesive can also be provided between the sealing plate 46 and the guide plate 41 to make the sealing plate 46 adhere more firmly to the upper surface of the guide plate 41. Similarly, an adhesive can also be provided between the two layers of sealing plates 46 to make the two layers of sealing plates 46 adhere firmly together. An adhesive can also be provided between the pressure plate 44 and the sealing plate 46 to make the pressure plate 44 adhere firmly to the upper layer of sealing plate 46, which helps to reduce the contact area between sewage and the sealing plate 46, thereby helping to improve the service life of the sealing plate 46.

[0064] In a more refined implementation, water inlet baffles 34 are also provided on both sides of the disk assembly 2, such as... Figure 12 As shown, two inlet baffles 34 are arranged in parallel. The ends of the two inlet baffles 34 closest to the sewage inlet 16 are respectively connected to the two side plates 31 forming the flow guide channel 17. The distance between the two inlet baffles 34 is smaller than the distance between the two side plates 31. Figure 12 As shown, the two sides of the guide plate 41 in the water inlet diversion device 4 can respectively abut against the inner side of the two water inlet baffles 34, so as to guide the sewage into the magnetic adsorption area 23 of the disk 21, which causes the problem of magnetic leakage when placed at the end of the disk group 2.

[0065] During actual operation, wastewater enters the guide channel 17 through the wastewater inlet 16. The first lip 51, under the combined action of its own elasticity and the inlet water pressure, remains in contact with the outer end face 22 of the disk 21. Simultaneously, the second lip 61, also under the combined action of its own elasticity and the inlet water pressure, remains in contact with the side of the disk 21. This ensures that the wastewater, guided by the inlet drainage device 4, directly enters the magnetic adsorption area 23 of the disk 21, preventing it from directly entering the non-magnetic area of ​​the disk 21 or the gap 19 between the disk 21 and the purification tank 11, thus avoiding magnetic leakage. In the purification tank... Within 11, magnetic flocs in the wastewater are continuously adsorbed onto the magnetic adsorption area 23 of the disk 21. Simultaneously, the disk assembly 2 rotates slowly at a set speed under the drive of the drive motor. The adsorbed magnetic flocs rotate synchronously with the disk 21, so that the magnetic flocs are detached from the wastewater through rotation and turn towards the slag discharge mechanism. Finally, at the slag discharge mechanism, they are scraped off the disk 21 by the scraper strip 27, realizing the separation of magnetic flocs from wastewater. The disk 21, having lost the magnetic flocs, is submerged in the water again through rotation, so as to adsorb magnetic flocs in the water again. This cycle is repeated, thereby achieving the purpose of efficiently purifying wastewater. The purified wastewater is discharged through the clean water outlet 18. Example 2

[0066] The main difference between this embodiment 2 and embodiment 1 is that, in the magnetic separation device provided in this embodiment, one end of the guide plate 41 in the water inlet diversion device 4 is further constructed with an insertion part 43 for insertion into each water passage 25. Each insertion part 43 is evenly spaced along the width direction of the guide plate 41, such as... Figure 13 and Figure 14 As shown, this is to accommodate each water passage 25; during implementation, the width of the insertion part 43 is smaller than the width of the water passage 25, so that the insertion part 43 does not contact the disk 21, so as to avoid wear and damage to the disk 21.

[0067] In this embodiment, the insertion part 43 at the end of the guide plate 41 is mainly used to support the upper sealing plate 46. Specifically, it supports the part of the sealing plate 46 into which the water passage 25 is inserted, such as the guide plate 62 and the extension plate 52, so as to improve the stability of this part of the structure and make it less likely to be displaced or deformed due to external interference (such as the impact of sewage, the friction of the disk 21, etc.). This ensures that the first lip 51 and the second lip 61 can fit tightly against the disk 21, improve the stability of the first lip 51 and the second lip 61, and help to achieve a better anti-magnetic leakage effect. For example, when the sealing plate 46 with the guide plate 62 is set in the lower layer, the insertion part 43 can directly contact and support the guide plate 62 above. At this time, each extension plate 52 set in another sealing plate 46 can be stacked on top of each guide plate 62, and the guide plate 62 can be glued to the insertion part 43 with adhesive, and the extension plate 52 can be glued to the guide plate 62 with adhesive. When the sealing plate 46 with the extension plate 52 is set in the lower layer, the insertion part 43 can directly contact and support the extension plate 52 above. At this time, each guide plate 62 set in another sealing plate 46 can be stacked on top of each extension plate 52, and the extension plate 52 can be glued to the insertion part 43 with adhesive, and the guide plate 62 can be glued to the extension plate 52 with adhesive.

[0068] In a further embodiment, a pressure block 7 that adapts to the insertion portion 43 is also included, such as... Figures 14-16 As shown, the pressure block 7 is positioned above the uppermost sealing plate 46. The pressure block 7 is connected to the lower insertion part 43 via fasteners, pressing the guide vane 62 and extension vane 52 firmly into the insertion part 43 of the guide plate 41. This not only facilitates the disassembly and replacement of the sealing plate 46 but also provides a more secure fixation of the guide vane 62 and extension vane 52, preventing them from being lifted by the water flow and affecting water intake and uniform water distribution. For example, as... Figures 14-16As shown, the pressure block 7 is a rectangular block, and the fastener is a self-tapping screw 71. The pressure block 7 is fixed above the guide plate 41 using the self-tapping screw 71. Of course, the fastener can also be bolts, etc. It can be understood that outside the end of the disk group 2, outside the outermost disk 21, there is also an insertion part 43, a guide plate 62 and an extension plate 52. The guide plate 62 and the extension plate 52 outside the outermost disk 21 can also be pressed against the insertion part 43 by the pressure block 7 so as to achieve a better anti-magnetic leakage effect outside the end of the disk group 2.

[0069] In implementation, the insertion part 43 can preferably be constructed as a plate-like structure, such as... Figures 13-15 As shown, the insertion part 43 and the guide plate 41 can be integrally formed components. For example, by processing multiple notches at one end of the guide plate 41, each notch is evenly spaced along the width direction of the guide plate 41, so that the insertion part 43 is formed between two adjacent notches, so as to more stably support the sealing plate 46. This not only makes the structure of the entire guide plate 41 simpler, but also allows for lower cost implementation.

[0070] In practice, the length of the insertion part 43 can be determined according to actual needs. For example, the insertion part 43 can extend to a position close to the outer contour 24 of the magnetic adsorption region 23, or it can extend to the outer contour 24 of the magnetic adsorption region 23, or it can extend into the magnetic adsorption region 23. Figure 14 and Figure 15 As shown, this is to guide wastewater into the magnetic adsorption zone 23. Example 3

[0071] The main difference between this embodiment 3 and the above embodiments is that, in the magnetic separation device provided in this embodiment, at least two screws 32 are provided on the upper surface of the inlet bottom plate 3, the guide plate 41 is constructed with mounting holes 42 adapted to each screw 32, the sealing plate 46 is constructed with through holes 47 adapted to each mounting hole 42, and the pressure plate 44 is constructed with assembly holes 45 adapted to each through hole 47. In this embodiment, the through holes 47 are strip holes, such as... Figure 18 and Figure 19 As shown, the length direction of the perforation is consistent with the length direction of the sealing plate 46 (or the length direction of the water inlet base plate 3), making the distance between the sealing plate 46 and the disk assembly 2 adjustable during installation and debugging. This facilitates adjustment of the friction between the first lip 51 and the outer end face 22 of the disk, as well as the friction between the second lip 61 and the side of the disk 21. This not only ensures that the first lip 51 and the second lip 61 fit snugly against the disk 21, achieving better anti-magnetic leakage, but also effectively protects the first lip 51 and the second lip 61, extending the service life of the sealing plate 46. Furthermore, it improves the versatility of the water inlet drainage device 4.

[0072] In this embodiment, the mounting hole 42 is a strip hole, such as... Figure 17 As shown, the length direction of the strip hole is consistent with the length direction of the guide plate 41 (or the length direction of the water inlet base plate 3), so that the distance between the guide plate 41 and the disk group 2 can be adjusted during installation and debugging. This not only greatly reduces the gap 19 between the water inlet base plate 3 and the disk 21, reducing the possibility of magnetic leakage, but also better supports the upper sealing plate 46, ensuring that the first lip 51 and the second lip 61 fit the disk 21 more stably.

[0073] In this embodiment, the assembly hole 45 can also be a strip hole, such as... Figure 20 As shown, the length direction of the strip hole is consistent with the length direction of the pressure plate 44 (or the length direction of the water inlet base plate 3), so that the distance between the pressure plate 44 and the disk assembly 2 can be adjusted during installation and debugging, so as to better press the sealing plate 46 below; of course, in implementation, the assembly hole 45 can also be a round hole. Example 4

[0074] The main difference between this embodiment 4 and the above embodiments is that, in the magnetic separation device provided in this embodiment, a water spray assembly is also provided above the guide channel 17 near the sewage inlet 16. The water spray assembly is connected to the delivery pump, which provides the delivery power. The water spray assembly sprays water, and the water flow impacts the foam surface, using the physical impact force of the water droplets to destroy the bubble structure, thereby eliminating foam and preventing the large-scale accumulation of foam. In implementation, the water spray assembly includes a water spray pipe 8 arranged along the width direction of the inlet base plate 3 and one or more nozzles 81 disposed on the water spray pipe 8, such as... Figure 21 As shown, the water spray pipe 8 is connected to the delivery pump, and the nozzle 81 is located above the guide channel 17, corresponding to the foam accumulation area below. Water is sprayed into the foam accumulation area below through the nozzle 81. In a further embodiment, a baffle 82 is also provided above the water inlet base plate 3. The baffle 82 is located between the sewage inlet 16 and the disk assembly 2, and the lower end of the baffle 82 is submerged below the liquid surface of the purification tank 11. Figure 21 As shown; the partition 82 can be arranged parallel to the side wall 13 on one side of the purification tank 11, and a defoaming space 83 is formed between the partition 82 and the side wall 13, as shown. Figure 21 As shown, the defoaming space 83 is located above the guide channel 17, and the water spraying assembly is installed within this defoaming space 83, spraying water downwards. The baffle 82 is used to isolate the water spraying assembly, which not only prevents the water sprayed by the assembly from causing larger liquid surface fluctuations in the purification tank 11, thus preventing the adsorbed magnetic flocs from falling off due to liquid surface fluctuations, but also prevents the water sprayed by the assembly from directly dispersing the magnetic flocs. This helps ensure that the disk 21 adsorbs the magnetic flocs in the sewage more efficiently and stably, achieving a better sewage treatment effect. In addition, the baffle can also effectively trap scum and foam generated during the influent and conditioning processes, which will not be elaborated here.

[0075] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A magnetic separation device, comprising a device body, the device body including a frame and a disk assembly, the disk assembly including multiple coaxially arranged disks, each disk containing a magnet, and a water passage formed between adjacent disks; the frame including a guide channel and a purification tank for accommodating the disk assembly; one end of the guide channel corresponds to the side of the disk assembly to guide wastewater to the side of the disk assembly, achieving water inlet from the side of the disk assembly, and the other end is connected to a wastewater inlet; characterized in that, The bottom of the flow channel is equipped with a water inlet device, which includes a flow guide plate, a pressure plate, and two sealing plates. The flow guide plate is fixed to the bottom of the flow channel, the pressure plate is fixed above the flow guide plate, and the two sealing plates are pressed tightly against the flow guide plate. The flow guide plate is used to support the sealing plates. The two sealing plates are the first sealing plate and the second sealing plate, respectively. One end of the first sealing plate is constructed with multiple first lips, each first lip being distributed at intervals along the width direction of the first sealing plate, each first lip being located outside the pressure plate, and each first lip being turned upwards and abutting against the outer end face of each disk. The second sealing plate has multiple clamping structures at one end, which are spaced apart along the width of the second sealing plate. Each clamping structure is located outside the pressure plate and is adapted to each disk. Each clamping structure includes two second lips arranged opposite each other along the length of the second sealing plate. The two second lips are turned upward to form an elastic latch between them to adapt to the disk. On both sides of the elastic latch are guide vanes arranged along the length of the second sealing plate. The two second lips are connected to the guide vanes on both sides. The guide vanes are arranged along the length of the second sealing plate and are inserted into the water passages of the disk group. The two second lips in each clamping structure are turned upward and abut against the two sides of the same disk. Through the coordinated cooperation of the first lip, the second lip, the guide vanes and the disk, sewage is prevented from being discharged directly through the gap between the outer end face of the disk and the purification tank or the non-magnetic area on the side of the disk.

2. The magnetic separation device according to claim 1, characterized in that, The end of the guide plate that faces away from the sewage inlet extends at least to the outer contour of the magnetic adsorption area in the disk.

3. The magnetic separation device according to claim 1, characterized in that, The first lip, after being flipped up, has the elasticity to flip down, so that the first lip, after being flipped up, always remains in contact with the outer end face of the disk. And / or, the second lip after being flipped up has the elasticity to be flipped down, so that the second lip after being flipped up always remains in contact with the side of the disk.

4. The magnetic separation device according to claim 2, characterized in that, The end of the second lip that is away from the sewage inlet extends at least to the outer contour of the magnetic adsorption area in the disk. And / or, the sealing plate is made of rubber; And / or, an adhesive is provided between the sealing plate and the guide plate; an adhesive is provided between the sealing plates; an adhesive is provided between the sealing plate and the pressure plate.

5. The magnetic separation device according to claim 1, characterized in that, The width of the first lip is W1, W≤W1≤W+2h, and L1+W1=W0+W, where L1 is the distance between two adjacent first lips, W is the thickness of the disk, W0 is the width of the water passage, and h is the thickness of the first sealing plate.

6. The magnetic separation device according to claim 1, characterized in that, The flow guiding channel includes an inlet bottom plate for guiding the flow, and a pressure plate is detachably installed on the flow guiding plate; the flow guiding plate is detachably installed on the inlet bottom plate.

7. The magnetic separation device according to claim 6, characterized in that, It also includes a drive motor, which is connected to the disk assembly for driving the disk assembly to rotate; The water inlet base plate is connected to the base plate of the purification tank, and the base plate of the purification tank is constructed with an arc-shaped structure to accommodate the disk assembly.

8. The magnetic separation device according to claim 1, characterized in that, There is an extension piece connected to the first sealing plate between two adjacent first lips. The width of the extension piece is less than or equal to the width of the water passage. Each extension piece is inserted into each water passage and each extension piece is stacked with each guide piece.

9. The magnetic separation device according to claim 8, characterized in that, One end of the baffle plate is also constructed with multiple insertion parts, each of which is spaced apart along the width direction of the baffle plate. The width of the insertion part is smaller than the width of the water passage. Each insertion part is inserted into the water passage of the disk group, and each baffle plate is set in each insertion part.

10. The magnetic separation device according to claim 9, characterized in that, The end of the insertion part that is away from the sewage inlet extends at least to the outer contour of the magnetic adsorption area in the disk. It also includes a pressure block that adapts to the insertion part. The pressure block is located above the uppermost sealing plate. The pressure block is connected to the insertion part by fasteners and presses the guide plate and / or extension plate against the guide plate.

Images