Diversion aerated biological filter

Abstract

The present application relates to the field of sewage treatment, and specifically discloses a diversion aeration biological filter, including a mounting frame and a filter body, the filter body including an outer cylinder and an inner cylinder, a mud outlet pipe is provided on one end of the outer cylinder close to the mounting frame, a first rotating plate and a second rotating plate are provided on the inner wall of the mud outlet pipe for lifting and lowering, a first mud inlet and a filter port are provided on the first rotating plate at intervals, a first filter plate is provided on the filter port, a baffle and a reset member are provided on the first filter plate; a second mud inlet is provided on the second rotating plate, and a drive assembly is provided on the first rotating plate and the second rotating plate; in the present application, the drive assembly can align the first mud inlet and the second mud inlet, and the sludge can enter the mud outlet pipe through the first mud inlet and the second mud inlet, the drive assembly can also align the filter port and the second mud inlet, so that the first rotating plate and the second rotating plate are synchronously lowered, and the moisture in the sludge entering the mud outlet pipe can be filtered out through the first filter plate.

Description

Technical Field

[0001] The present application relates to the field of sewage treatment, and in particular to a diversion aeration biological filter. Background Art

[0002] A diversion aerated biological filter is a biofilter commonly used in water treatment systems to remove organic matter and pollutants such as nitrogen and phosphorus from water. Its operating principle is to evenly distribute water into the filter media through the diversion effect of the water flow, while simultaneously supplying oxygen to the filter media through the aeration device, providing the oxygen required for microbial growth.

[0003] A diversion aerated biological filter typically consists of a filter tank, a filter media layer, a diversion device, and an aeration device. Sewage enters the filter tank through the water inlet and is then evenly distributed onto the filter media layer by the diversion device. Within the filter media layer, microorganisms grow by attaching to the filter media surface, metabolizing and growing organic matter in the water, thereby degrading it into inorganic matter. Simultaneously, the aeration device supplies oxygen to the filter media layer to maintain the normal metabolic activity of the microorganisms. Simultaneously, the sludge in the sewage settles to the bottom of the filter tank. A sludge outlet is provided at the bottom of the filter tank to discharge the settled sludge. The discharged sludge is then dried before being transported.

[0004] Regarding the above-mentioned related technologies, when the sludge is discharged, the sludge contains a lot of water, so the discharged sludge is not easy to dry, so improvements are made to this problem. Summary of the Invention

[0005] In order to reduce the water content in the discharged sludge, the present application provides a diversion aeration biological filter.

[0006] The diversion aeration biological filter provided in this application adopts the following technical solutions:

[0007] A diversion aerated biological filter, comprising a mounting frame and a filter body, the filter body being mounted on the mounting frame, the filter body comprising an outer tube and an inner tube, the outer tube being provided with a mud discharge pipe on one end close to the mounting frame, the inner tube being disposed within the outer tube, the inner tube being provided with a sewage pipe on one end away from the mud discharge pipe, and a clean water pipe being provided on the side wall of the outer tube being provided with an end away from the mud discharge pipe, a first biological filter silo being provided within the inner tube, and a second biological filter silo being provided between the inner tube and the outer tube;

[0008] The first biological filter silo and the second biological filter silo are provided with filter materials containing microorganisms capable of reacting with sewage. A plurality of first nozzles are provided on one side of the first biological filter silo and the second biological filter silo close to the mud discharge pipe. A first rotating plate and a second rotating plate are provided on the inner wall of the mud discharge pipe for lifting, and the side walls of the first rotating plate and the second rotating plate are provided in contact with the inner wall of the mud discharge pipe.

[0009] The first rotating plate is rotatably disposed on a surface of the second rotating plate close to the sewage pipe, a first mud inlet and a filter port are spaced apart on the first rotating plate, a first filter plate is disposed in the filter port, a baffle and a reset member are disposed on a surface of the first filter plate away from the second rotating plate, the baffle is pressed against the first filter plate by the reset member and covers the first filter plate;

[0010] A second mud inlet is provided on the second rotating plate, and a driving assembly is also provided in the filter tank body. The driving assembly is used to drive the first rotating plate and the second rotating plate to rotate relative to each other so that the second mud inlet is aligned with the first mud inlet or the filter port, and to drive the first rotating plate and the second rotating plate to rise and fall.

[0011] By adopting the above technical solution, after the sewage enters the inner cylinder, it moves downward through the first biofilter bin and then enters the second biofilter bin between the inner and outer cylinders. After the sewage fully contacts the filter media in the first and second biofilter bins and reacts with the microorganisms in the filter media, organic matter and pollutants such as nitrogen and phosphorus in the water are removed;

[0012] When sewage moves from the inner cylinder to between the inner cylinder and the outer cylinder, the sludge in the sewage settles at the bottom of the outer cylinder under the influence of gravity, and the upper water treated by the first and second biological filter bins can be pumped out through the clean water pipe. Under the action of the driving component, the first mud inlet on the first rotating plate and the second mud inlet on the second rotating plate are aligned, and the sludge settled at the bottom of the outer cylinder can enter the mud outlet pipe through the first and second mud inlets.

[0013] Then, the filter port on the first rotating plate and the second mud inlet on the second rotating plate are aligned with each other through the driving component, and the first rotating plate and the second rotating plate are synchronously lowered at the same time, so that the moisture of the sludge entering the mud outlet pipe can be filtered out through the first filter plate, thereby reducing the moisture content of the sludge in the mud outlet pipe. The baffle and the reset part on the first filter plate can realize the unidirectional flow of the moisture in the mud outlet pipe into the outer cylinder, so the mud outlet pipe can be directly opened to pour out the dehydrated sludge, thereby reducing the moisture content in the discharged sludge.

[0014] Optionally, the drive assembly includes a drive motor and a rotating rod, the drive motor is coaxially arranged on the end of the inner cylinder away from the mud discharge pipe, the rotating rod is arranged in the inner cylinder, and one end is coaxially connected to the output shaft of the drive motor, the rotating rod is provided with a thread at one end away from the drive motor, the first rotating plate is threadedly connected to the rotating rod, the second rotating plate is slidingly connected to the rotating rod, and the first rotating plate is provided with a clamping structure for relative locking or unlocking the first rotating plate and the second rotating plate.

[0015] By adopting the above technical solution, the first rotating plate is threadedly connected to the rotating rod, the second rotating plate is slidably connected to the rotating rod, and the first rotating plate is rotatably arranged on the second rotating plate. Therefore, the first rotating plate can be rotated on the second rotating plate to align the second mud inlet with the first mud inlet or the filter port, and the second mud inlet is aligned with the first mud inlet. The sludge in the outer cylinder enters the mud outlet pipe through the first mud inlet and the second mud inlet, and then the second mud inlet is aligned with the filter port by driving the motor.

[0016] Under the action of the clamping structure, the first rotating plate and the second rotating plate are synchronously lowered to pressurize the sludge in the mud outlet pipe, so that the water in the mud outlet pipe enters the outer cylinder through the first filter plate on the filter port, and the mud outlet pipe is directly opened to pour out the dehydrated sludge, thereby reducing the water content in the discharged sludge; after closing the mud outlet and driving the motor to rotate in the opposite direction, the first rotating plate is first rotated on the second rotating plate through the clamping structure to align the first mud inlet and the second mud inlet, and then the first rotating plate and the second rotating plate are synchronously raised through the clamping structure, so that the sludge in the outer cylinder enters the mud outlet pipe through the first mud inlet and the second mud inlet.

[0017] Optionally, a limiting block is provided on the side wall of the second rotating plate, and a limiting groove is provided on the inner wall of the mud outlet pipe along the height direction, and the limiting block can be slidably set in the limiting groove, and the clamping structure includes a sliding block, which is provided on a surface of the first rotating plate close to the second rotating plate, and a sliding groove is provided on the second rotating plate, the sliding block is located in the sliding groove and is slidably connected to the sliding groove, when the sliding block abuts against one end of the sliding groove, the second mud inlet is aligned with the first mud inlet, and when the sliding block abuts against the other end of the sliding groove, the second mud inlet is aligned with the filter port.

[0018] By adopting the above technical solution, since the first rotating plate and the rotating rod are threadedly connected, the sliding block on the first rotating plate can be moved by the driving motor to abut against the two inner walls of the sliding groove along the length direction. When the sliding block abuts against the two different end portions of the sliding groove along the length direction, the second mud inlet is aligned with the first mud inlet or the filter port, and when the sliding block abuts against the two inner walls of the sliding groove along the length direction, the first rotating plate and the second rotating plate stop rotating relative to each other, and since the sliding block and the sliding groove are clamped with each other in the vertical direction, the limit block can be raised and lowered in the limit groove.

[0019] Optionally, a brush groove is provided on a surface of the second rotating plate close to the second rotating plate, and a first brush plate for cleaning the first filter plate is provided in the brush groove.

[0020] By adopting the above technical solution, the first filter plate may become clogged after long-term use. When the first rotating plate and the second rotating plate rotate relative to each other, the second brush plate can wash the side of the first filter plate close to the second rotating plate, thereby maintaining the filtering effect of the first filter plate.

[0021] Optionally, a driving bevel gear is provided on the rotating rod, a first cross bar is provided in the inner cylinder, a driven bevel gear is provided at one end of the first cross bar, and the other end passes through the side wall of the inner cylinder and extends into the second biological filter material bin between the inner cylinder and the outer cylinder, and the driving bevel gear and the driven bevel gear are engaged with each other, a first stirring plate for stirring the filter material in the first biological filter material bin is provided on the side wall of the first cross bar close to the rotating rod, and a second stirring plate for stirring the filter material in the second biological filter material bin is provided on the side wall of the first cross bar away from the rotating rod.

[0022] By adopting the above technical solution, when the rotating rod rotates, it can drive the active bevel gear to rotate. Since the active bevel gear and the driven bevel gear are engaged with each other, it can drive the first cross bar to rotate, thereby driving the first stirring plate and the second stirring plate on the first cross bar to rotate with the first cross bar as the rotation center. When the first stirring plate and the second stirring plate rotate, the first biofilter material bin and the second biofilter material bin can be stirred, so as to achieve full contact between the sewage and the filter materials in the first biofilter material bin and the second biofilter material bin and fully react with the microorganisms in the filter materials.

[0023] Optionally, a digging plate is provided on one end of the first stirring plate and the second stirring plate away from the first cross bar.

[0024] By adopting the above technical solution, the digging plate can improve the stirring effect of the first stirring plate on the first biological filter and the stirring effect of the second stirring plate on the second biological filter when the first stirring plate and the second stirring plate rotate, so that the sewage can further contact the filter material in the first biological filter silo and the second biological filter silo and react more fully with the microorganisms in the filter material.

[0025] Optionally, one end of the inner cylinder close to the mud outlet pipe is opened, and a second filter plate is provided between the inner wall of the outer cylinder and the inner cylinder.

[0026] By adopting the above technical solution, the end of the inner tube close to the mud outlet pipe is opened to better drain the sewage, and the second filter plate can filter the sludge in the sewage entering the second biological filter, thereby increasing the sedimentation rate of the sludge in the sewage and reducing the impact of the sludge in the sewage on the reaction between the second biological filter and the sewage.

[0027] Optionally, a second cross bar is provided on the rotating rod, and a second brush plate for cleaning the second filter plate is provided on an end of the second cross bar away from the rotating rod.

[0028] By adopting the above technical solution, when the rotating rod drives the second brush plate on the second cross bar to rotate, the second brush plate can clean the second filter plate, thereby avoiding clogging of the second filter plate after long-term use of the second filter plate and reducing the filtering effect of the second filter plate.

[0029] Optionally, the outer cylinder includes a straight cylinder portion and a frustum portion, the frustum portion is arranged below the straight cylinder portion, and a plurality of second nozzles are arranged on the inner wall of the frustum portion.

[0030] By adopting the above technical solution, the second jet head can improve the aeration effect in the filter body, and the jetting of the second jet head can accelerate the stratification of water and mud in the sludge at the bottom of the outer cylinder.

[0031] Optionally, a crossbeam is provided in the straight cylinder portion, a water spray head is provided on the crossbeam, and the crossbeam is provided on a side of the second brush plate close to the frustum portion.

[0032] By adopting the above technical solution, the water spraying head can flush the frustum part, thereby reducing the amount of silt attached to the side wall of the frustum part.

[0033] In summary, this application includes at least one of the following beneficial technical effects:

[0034] 1. The second mud inlet is aligned with the first mud inlet, and the sludge in the outer cylinder enters the mud outlet pipe through the first and second mud inlets. The second mud inlet is then aligned with the filter port by a driving motor. Under the action of the clamping structure, the first and second rotating plates descend synchronously to pressurize the sludge in the mud outlet pipe, allowing the water in the mud outlet pipe to pass through the first filter plate on the filter port and enter the outer cylinder. The mud outlet pipe is then directly opened to pour out the dehydrated sludge, thereby reducing the water content in the discharged sludge.

[0035] 2. The sliding block on the first rotating plate can be driven by the driving motor to move until it abuts against two inner walls of the sliding groove along the length direction. When the sliding block abuts against two different inner walls of the sliding groove along the length direction, the second mud inlet is aligned with the first mud inlet or the filter port. When the sliding block abuts against the two inner walls of the sliding groove along the length direction, the first rotating plate and the second rotating plate stop rotating relative to each other. Since the sliding block and the sliding groove are engaged with each other in the vertical direction, the limit block can be raised and lowered in the limit groove.

[0036] 3. When the rotating rod rotates, it drives the driving bevel gear to rotate. Since the driving bevel gear and the driven bevel gear are engaged with each other, it can drive the first crossbar to rotate, thereby driving the first stirring plate and the second stirring plate on the first crossbar to rotate with the first crossbar as the rotation center. When the first and second stirring plates rotate, they can stir the filter media in the first and second biofilter bins, thereby achieving full contact between the sewage and the filter media in the first and second biofilter bins, and sufficient reaction with the microorganisms in the filter media;

[0037] 4. The second jet head can improve the aeration effect in the filter body, and can accelerate the stratification of water and mud in the sludge at the bottom of the outer cylinder through jetting. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0039] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0040] Figure 2 yes Figure 1 Schematic diagram of a partial cross-section structure;

[0041] Figure 3 yes Figure 2 A magnified schematic diagram of part A;

[0042] Figure 4 yes Figure 2 Schematic diagram of part of the structure;

[0043] Figure 5 yes Figure 4 Exploded diagram of part of the structure.

[0044] Figure 1: Mounting frame; 2: Filter tank body; 21: Inner cylinder; 211: Sewage pipe; 212: First biofilter bin; 213: Second biofilter bin; 214: First jet nozzle; 22: Outer cylinder; 221: Mud outlet pipe; 222: Clean water pipe; 223: Straight cylinder; 224: Cone portion; 2241: Second jet nozzle; 3: First rotating plate; 31: First mud inlet; 32: Filter port; 321: First filter plate; 322: Baffle; 323: Reset member; 4: Second rotating plate ;41. Second mud inlet;42. Brush groove;43. First brush plate;5. Driving assembly;51. Driving motor;52. Rotating rod;521. Active bevel gear;522. First cross bar;523. Driven bevel gear;524. First stirring plate;525. Second stirring plate;526. Digging plate;6. Clamping structure;61. Limit block;62. Sliding block;63. Limit groove;64. Sliding groove;7. Second filter plate;8. Second cross bar;81. Second brush plate;9. Cross beam;91. Sprinkler head. DETAILED DESCRIPTION

[0045] The following is combined with Figure 1-5 This application is described in further detail.

[0046] The embodiments of the present application disclose a diversion aeration biological filter.

[0047] Diversion aerated biological filter, refer to Figure 1 、 Figure 2 and Figure 3 , including a mounting frame 1 and a filter tank body 2, the filter tank body 2 is welded and installed on the mounting frame 1, the filter tank body 2 includes an outer cylinder 22 and an inner cylinder 21, the outer cylinder 22 is provided with a mud discharge pipe 221 on one end close to the mounting frame 1, the inner cylinder 21 is arranged in the outer cylinder 22, and a sewage pipe 211 is provided on the end of the inner cylinder 21 away from the mud discharge pipe 221, and a clean water pipe 222 is provided on the side wall of the end of the outer cylinder 22 away from the mud discharge pipe 221, a first biological filter material bin 212 is provided in the inner cylinder 21, and an annular second biological filter material bin 213 is provided between the inner cylinder 21 and the outer cylinder 22, filter material is placed in the first biological filter material bin 212 and the second biological filter material bin 213, the filter material in this embodiment is ceramsite, and the filter material contains microorganisms that can react with sewage, and a plurality of first jet heads 214 are installed on the side close to the mud discharge pipe 221 of the first biological filter material bin 212 and the second biological filter material bin 213.

[0048] Reference Figure 4 and Figure 5 The first rotating plate 3 and the second rotating plate 4 are installed in a lifting manner on the inner wall of the mud discharge pipe 221, and the side walls of the first rotating plate 3 and the second rotating plate 4 are arranged in contact with the inner wall of the mud discharge pipe 221. The first rotating plate 3 is rotatably installed on the side of the second rotating plate 4 away from the mud discharge pipe 221. The first rotating plate 3 is provided with a first mud inlet 31 and a filter port 32 at intervals. The first filter plate 321 is installed on the filter port 32. A baffle 322 and a reset member 323 are installed on the side of the first filter plate 321 away from the second rotating plate 4. The baffle 322 is pressed on the first filter plate 321 by the reset member 323 and covers the first filter plate 321. A second mud inlet 41 is opened on the second rotating plate 4. A driving assembly 5 is provided on the first rotating plate 3 and the second rotating plate 4.

[0049] After the sewage enters the inner cylinder 21, it moves downward through the first biological filter bin 212. Sewage is continuously injected until the inner cylinder 21 and the outer cylinder 22 are filled with sewage, and then the sewage enters the second biological filter bin 213 between the inner cylinder 21 and the outer cylinder 22. After fully contacting the filter media in the first biological filter bin 212 and the second biological filter bin 213, the sewage reacts with the microorganisms in the filter media to remove organic matter and pollutants such as nitrogen and phosphorus in the water.

[0050] When the sewage moves from the inner cylinder 21 to between the inner cylinder 21 and the outer cylinder 22, the sludge in the sewage settles at the bottom of the outer cylinder 22 under the influence of gravity, and the upper water treated by the first biological filter bin 212 and the second biological filter bin 213 can be pumped out through the clean water pipe 222. Under the action of the driving component 5, the first mud inlet 31 on the first rotating plate 3 and the second mud inlet 41 on the second rotating plate 4 are aligned, and the sludge settled at the bottom of the outer cylinder 22 can enter the mud outlet pipe 221 through the first mud inlet 31 and the second mud inlet 41.

[0051] Then, the filter port 32 on the first rotating plate 3 and the second mud inlet 41 on the second rotating plate 4 are aligned through the driving component 5, and the first rotating plate 3 and the second rotating plate 4 are synchronously lowered at the same time, so that the moisture of the sludge entering the mud outlet pipe 221 can be filtered out through the first filter plate 321, thereby reducing the moisture content of the sludge in the mud outlet pipe 221. The baffle 322 and the reset member 323 on the first filter plate 321 can realize the unidirectional flow of moisture in the mud outlet pipe 221 into the outer cylinder 22, so the mud outlet pipe 221 can be directly opened to pour out the dehydrated sludge, thereby reducing the moisture content in the discharged sludge.

[0052] In this embodiment, the number of the first mud inlet 31 and the number of the filter port 32 are both two, and the two first mud inlets 31 are centrally symmetrically arranged, and the two filter ports 32 are also centrally symmetrically arranged. The number of the second mud inlet 41 is also two, and they are centrally symmetrically arranged with the first mud inlet 31 and the filter port 32. The reset member 323 in this embodiment is a rotating shaft and a torsion spring. Under the action of the torsion spring, the baffle 322 is pressed on the first filter plate 321 with the rotating shaft as the center, and the area of ​​the baffle 322 is greater than or equal to the first filter plate 321, ensuring that the baffle 322 can cover the first filter plate 321. The torsion spring and the rotating shaft are a preferred embodiment of this embodiment. In other embodiments, a spring with both ends fixedly mounted on the first filter plate 321 and the baffle 322 can be used.

[0053] In order to realize the relative rotation between the first rotating plate 3 and the second rotating plate 4, the second mud inlet 41 is aligned with the first mud inlet 31 and the filter port 32 and then synchronously raised and lowered. Figure 4 and Figure 5 The driving assembly 5 in this embodiment includes a driving motor 51 and a rotating rod 52. The driving motor 51 is coaxially installed above the inner cylinder 21 away from the mud discharge pipe 221. The rotating rod 52 is installed in the inner cylinder 21, and one end is coaxially connected to the output shaft of the driving motor 51. The rotating rod 52 is provided with a thread on the end away from the driving motor 51. The first rotating plate 3 is threadedly connected to the rotating rod 52, and the second rotating plate 4 is slidingly connected to the rotating rod 52. A clamping structure 6 is provided on the first rotating plate 3 and the second rotating plate 4.

[0054] The first rotating plate 3 is threadedly connected to the rotating rod 52, and the second rotating plate 4 is slidingly connected to the rotating rod 52. The first rotating plate 3 is rotatably set on the second rotating plate 4, so the first rotating plate 3 can rotate on the second rotating plate 4 to align the second mud inlet 41 with the first mud inlet 31 or the filter port 32, and the second mud inlet 41 is aligned with the first mud inlet 31. The sludge in the outer cylinder 22 enters the mud outlet pipe 221 through the first mud inlet 31 and the second mud inlet 41, and then the second mud inlet 41 is aligned with the filter port 32 by driving the motor 51.

[0055] Under the action of the clamping structure 6, the first rotating plate 3 and the second rotating plate 4 are synchronously lowered to pressurize the sludge in the mud outlet pipe 221, so that the water in the mud outlet pipe 221 enters the outer cylinder 22 through the first filter plate 321 on the filter port 32, and the mud outlet pipe 221 is directly opened to pour out the dehydrated sludge, thereby reducing the water content in the discharged sludge; after closing the mud outlet pipe 221 and driving the motor 51 to rotate in the opposite direction, the first rotating plate 3 is first rotated on the second rotating plate 4 through the clamping structure 6 to align the first mud inlet 31 and the second mud inlet 41, and then the first rotating plate 3 and the second rotating plate 4 are synchronously raised through the clamping structure 6, so that the sludge in the outer cylinder 22 enters the mud outlet pipe 221 through the first mud inlet 31 and the second mud inlet 41.

[0056] Reference Figure 4 and Figure 5 The clamping structure 6 in this embodiment includes a limit block 61 and a sliding block 62. The limit block 61 is integrally arranged on the side wall of the second rotating plate 4, and the inner wall of the mud discharge pipe 221 is provided with a limit groove 63 along the height direction. The limit block 61 is lifted and installed in the limit groove 63, and the sliding block 62 is integrally arranged on the side of the first rotating plate 3 close to the second rotating plate 4. The second rotating plate 4 is provided with a sliding groove 64, and the sliding block 62 is slidably installed in the sliding groove 64 in the horizontal direction. The sliding block 62 in this embodiment needs to realize the limited clamping of the first rotating plate 3 and the second rotating plate 4 in the vertical direction. Therefore, the cross-section of the end of the sliding block 62 close to the first mounting plate in this embodiment is smaller than the cross-section of the end away from the first mounting plate. When the sliding block 62 abuts against the two different inner walls of the sliding groove 64 along the length direction, the second mud inlet 41 is aligned with the first mud inlet 31 or the filter port 32.

[0057] Because the first rotating plate 3 and the rotating rod 52 are threadedly connected, the sliding block 62 on the first rotating plate 3 can be moved by the driving motor 51 to abut against the two inner walls of the sliding groove 64 along the length direction. When the sliding block 62 abuts against the two different inner walls of the sliding groove 64 along the length direction, the second mud inlet 41 is aligned with the first mud inlet 31 or the filter port 32, and when the sliding block 62 abuts against the two inner walls of the sliding groove 64 along the length direction, the first rotating plate 3 and the second rotating plate 4 stop rotating relative to each other, and because the sliding block 62 and the sliding groove 64 are engaged with each other in the vertical direction, the limit block 61 can be raised and lowered in the limit groove 63. The vertical cross-section of the sliding block 62 in this embodiment is trapezoidal, which is a preferred embodiment of this embodiment. In other embodiments, the vertical cross-section of the sliding block 62 can be an inverted "T" shape or the like.

[0058] After the first filter plate 321 has been used for a long time, the first filter plate 321 may be clogged, thereby reducing the filtering effect of the water in the sludge in the mud outlet pipe 221. Figure 5 Therefore, in this embodiment, a brush groove 42 is opened on the side of the second rotating plate 4 close to the second rotating plate 4, and a first brush plate 43 is installed in the brush groove 42; when the first rotating plate 3 and the second rotating plate 4 rotate relative to each other, the second brush plate 81 can clean the side of the first filter plate 321 close to the second rotating plate 4, thereby maintaining the filtering effect of the first filter plate 321.

[0059] In order to ensure that the filter materials in the first biofilter bin 212 and the second biofilter bin 213 are in sufficient contact with the sewage, Figure 2 and Figure 3 In this embodiment, a driving bevel gear 521 is welded to the rotating rod 52, and a first cross bar 522 is installed in the inner cylinder 21. A driven bevel gear 523 is welded to one end of the first cross bar 522, and the other end passes through the side wall of the inner cylinder 21 and extends into the second biofilter material bin 213 between the inner cylinder 21 and the outer cylinder 22, and the driving bevel gear 521 and the driven bevel gear 523 are meshed with each other. A first stirring plate 524 is welded to the side wall of the first cross bar 522 close to the rotating rod 52, and a second stirring plate 525 is welded to the side wall of the first cross bar 522 away from the rotating rod 52.

[0060] When the rotating rod 52 rotates, it can drive the active bevel gear 521 to rotate. Since the active bevel gear 521 and the driven bevel gear 523 are engaged with each other, it can drive the first cross bar 522 to rotate, thereby driving the first stirring plate 524 and the second stirring plate 525 on the first cross bar 522 to rotate with the first cross bar 522 as the rotation center. When the first stirring plate 524 and the second stirring plate 525 rotate, the filter material in the first biological filter material bin 212 and the second biological filter material bin 213 can be stirred, so as to achieve full contact between the sewage and the filter material in the first biological filter material bin 212 and the second biological filter material bin 213 and full reaction with the microorganisms in the filter material.

[0061] In this embodiment, there are two first cross bars 522, which are symmetrically installed on both sides of the rotating rod 52. Six first stirring plates 524 and six second stirring plates 525 are welded and installed on the circumferential side walls of a single first cross bar 522. In other embodiments, the number of the first cross bars 522, the first stirring plates 524 and the second stirring plates 525 can be adjusted according to actual needs. In this embodiment, a digging plate 526 is further welded and installed on the end of the first stirring plate 524 and the second stirring plate 525 away from the first cross bar 522. The digging plate 526 can further improve the stirring effect of the first stirring plate 524 on the filter material in the first biological filter material bin 212 and the stirring effect of the second stirring plate 525 on the filter material in the second biological filter material bin 213 when the first stirring plate 524 and the second stirring plate 525 rotate, so that the sewage can further contact the filter material in the first biological filter material bin 212 and the second biological filter material bin 213 and react more fully with the microorganisms in the filter material.

[0062] After the sludge in the sewage enters the second biological filter bin 213, the contact area between the filter material in the second biological filter bin 213 and the sewage may be reduced, thereby reducing the reaction effect between the sewage and the microorganisms in the second biological filter bin 213. Figure 2 Therefore, in this embodiment, the end of the inner cylinder 21 close to the mud discharge pipe 221 is open, and a second filter plate 7 is welded and installed between the inner wall of the outer cylinder 22. The end of the inner cylinder 21 close to the mud discharge pipe 221 is open, which can better drain the sewage, and the second filter plate 7 can filter the sludge in the sewage entering the second biological filter bin 213, thereby increasing the sedimentation rate of the sludge in the sewage and reducing the impact of the sludge in the sewage on the reaction between the microorganisms in the second biological filter bin 213 and the sewage.

[0063] After using the second filter plate 7 for a long time, the second filter plate 7 may be blocked, thereby reducing the filtering effect of the second filter plate 7. Figure 2 Therefore, in this embodiment, a second cross bar 8 is welded and installed on the rotating rod 52, and a second brush plate 81 is welded and installed on the end of the second cross bar 8 away from the rotating rod 52; when the rotating rod 52 drives the second brush plate 81 on the second cross bar 8 to rotate, the second brush plate 81 can clean the second filter plate 7, thereby avoiding clogging of the second filter plate 7 after long-term use of the second filter plate 7, thereby reducing the filtering effect of the second filter plate 7. In this embodiment, there are four second cross bars 8, and the four second cross bars 8 are welded and installed on the rotating rod 52 at intervals along the circumference of the rotating rod 52. Four is a preferred embodiment of this embodiment. In other embodiments, the number of the second cross bars 8 can be adjusted according to actual needs.

[0064] Reference Figure 2 and Figure 4The outer cylinder 22 includes a straight cylinder portion 223 and a frustum portion 224. The frustum portion 224 is welded and installed below the straight cylinder portion 223. A plurality of second jet heads 2241 are installed on the inner wall of the frustum portion 224. The second jet heads 2241 can improve the aeration effect in the filter body 2, and can accelerate the stratification of water and mud in the sludge located at the bottom of the outer cylinder 22 by jetting through the second jet heads 2241. A crossbeam 9 is fixedly welded in the straight cylinder portion 223, and a water spray head 91 is installed on the crossbeam 9. The water spray head 91 is installed on the side of the second brush plate 81 close to the frustum portion 224. The water head spraying water can flush the frustum portion 224, thereby reducing the amount of silt attached to the side wall of the frustum portion 224.

[0065] The implementation principle of the diversion aeration biological filter in the embodiment of the present application is:

[0066] Sewage enters the inner cylinder 21 through the sewage pipe 211, passes through the first biological filter bin 212, and then enters the lower part of the outer cylinder 22 for sludge and water separation. The separated water enters the second biological filter bin 213 between the inner cylinder 21 and the outer cylinder 22, and contacts and reacts with the microorganisms in the second biological filter bin 213. The separated sludge can enter the mud outlet pipe 221 through the first mud inlet 31 on the first rotating plate 3 and the second mud inlet 41 on the second rotating plate 4. Then the drive motor 51 is started. The driving motor 51 drives the rotating rod 52 to rotate, and the sliding block 62 on the first rotating plate 3 abuts against the other inner wall of the sliding groove 64 in the length direction, so that the second mud inlet 41 is aligned with the filter port 32, and the rotating rod 52 continues to rotate. Due to the vertical clamping connection between the sliding block 62 and the sliding groove 64, the limit block 61 on the second rotating plate 4 descends in the limit groove 63, thereby pressing down and filtering the sludge in the mud outlet pipe 221, reducing the water content in the sludge in the mud outlet pipe 221.

[0067] Under the action of the reset member 323 and the baffle 322, the water in the mud discharge pipe 221 can only enter the outer cylinder 22 from the mud discharge pipe 221. Therefore, the mud discharge pipe 221 is opened, and after the silt in the mud discharge pipe 221 is poured out, the mud discharge pipe 221 is closed, and the drive motor 51 is started to make the rotating rod 52 rotate in the opposite direction. The sliding block 62 on the first rotating plate 3 is reset in the sliding groove 64 and abuts against the inner wall of the sliding groove 64, so that the first mud inlet 31 and the second mud inlet 41 are aligned, and the first rotating plate 3 and the second rotating plate 4 are driven to rise synchronously, and the silt enters the mud discharge pipe 221 again through the first mud inlet 31 and the second mud inlet 41. This reciprocating cycle can achieve the purpose of reducing the water content in the silt in the mud discharge pipe 221.

[0068] Unless otherwise defined, the technical or scientific terms used in this application shall have the usual meanings understood by persons of ordinary skill in the field to which this application belongs. The words "first", "second", "third" and similar terms used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "one" or "a" do not indicate a quantity limitation, but rather indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprises" cover the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0069] The above are all optional embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A diversion aeration biological filter, comprising a mounting frame (1) and a filter body (2), wherein the filter body (2) is arranged on the mounting frame (1), and is characterized in that: The filter tank body (2) comprises an outer cylinder (22) and an inner cylinder (21); a mud discharge pipe (221) is provided on one end of the outer cylinder (22) close to the mounting frame (1); the inner cylinder (21) is arranged in the outer cylinder (22); a sewage pipe (211) is provided on one end of the inner cylinder (21) away from the mud discharge pipe (221); a clean water pipe (222) is provided on the side wall of one end of the outer cylinder (22) away from the mud discharge pipe (221); a first biological filter material bin (212) is provided in the inner cylinder (21); and a second biological filter material bin (213) is provided between the inner cylinder (21) and the outer cylinder (22); The first biological filter material bin (212) and the second biological filter material bin (213) are provided with filter material, and the filter material is provided with microorganisms that can react with sewage. The first biological filter material bin (212) and the second biological filter material bin (213) are both provided with a plurality of first jet nozzles (214) on one side close to the mud outlet pipe (221). A first rotating plate (3) and a second rotating plate (4) are provided on the inner wall of the mud outlet pipe (221) so as to be lifted and lowered, and the side walls of the first rotating plate (3) and the second rotating plate (4) are provided in contact with the inner wall of the mud outlet pipe (221); The first rotating plate (3) is rotatably arranged on a side of the second rotating plate (4) close to the sewage pipe (211); a first mud inlet (31) and a filter port (32) are spaced apart on the first rotating plate (3); a first filter plate (321) is arranged in the filter port (32); a baffle (322) and a reset member (323) are arranged on a side of the first filter plate (321) away from the second rotating plate (4); the baffle (322) is pressed on the first filter plate (321) through the reset member (323) and covers the first filter plate (321); A second mud inlet (41) is provided on the second rotating plate (4), and a driving assembly (5) is further provided in the filter tank body (2). The driving assembly (5) is used to drive the first rotating plate (3) and the second rotating plate (4) to rotate relative to each other so that the second mud inlet (41) is aligned with the first mud inlet (31) or the filter port (32), and is used to drive the first rotating plate (3) and the second rotating plate (4) to rise and fall.

2. The diversion biological aeration filter according to claim 1, characterized in that: The driving assembly (5) comprises a driving motor (51) and a rotating rod (52). The driving motor (51) is coaxially arranged on the end of the inner cylinder (21) away from the mud discharge pipe (221). The rotating rod (52) is arranged in the inner cylinder (21), and one end is coaxially connected to the output shaft of the driving motor (51). The end of the rotating rod (52) away from the driving motor (51) is provided with a thread. The first rotating plate (3) is threadedly connected to the rotating rod (52), and the second rotating plate (4) is slidably connected to the rotating rod (52). The first rotating plate (3) is provided with a clamping structure (6) for relatively locking or unlocking the first rotating plate (3) and the second rotating plate (4).

3. The diversion biological aeration filter according to claim 2, characterized in that: A limiting block (61) is provided on the side wall of the second rotating plate (4), and a limiting groove (63) is provided on the inner wall of the mud outlet pipe (221) along the height direction. The limiting block (61) can be slidably arranged in the limiting groove (63). The clamping structure (6) includes a sliding block (62). The sliding block (62) is provided on a surface of the first rotating plate (3) close to the second rotating plate (4). A sliding groove (64) is provided on the second rotating plate (4). The sliding block (62) is located in the sliding groove (64) and is slidably connected to the sliding groove (64). When the sliding block (62) abuts against one end of the sliding groove (64), the second mud inlet (41) is aligned with the first mud inlet (31). When the sliding block (62) abuts against the other end of the sliding groove (64), the second mud inlet (41) is aligned with the filter port (32).

4. The diversion biological aeration filter according to claim 3, characterized in that: A brush groove (42) is provided on a surface of the second rotating plate (4) close to the second rotating plate (4), and a first brush plate (43) for cleaning the first filter plate (321) is provided in the brush groove (42).

5. The diversion biological aeration filter according to claim 2, characterized in that: A driving bevel gear (521) is provided on the rotating rod (52), a first cross bar (522) is provided in the inner cylinder (21), a driven bevel gear (523) is provided at one end of the first cross bar (522), and the other end penetrates the side wall of the inner cylinder (21) and extends into the second biological filter material bin (213) between the inner cylinder (21) and the outer cylinder (22), and the driving bevel gear (521) and the driven bevel gear (523) are engaged with each other. A first stirring plate (524) for stirring the filter material in the first biological filter material bin (212) is provided on the side wall of the first cross bar (522) close to the rotating rod (52), and a second stirring plate (525) for stirring the filter material in the second biological filter material bin (213) is provided on the side wall of the first cross bar (522) away from the rotating rod (52).

6. The diversion biological aeration filter according to claim 5, characterized in that: A digging plate (526) is provided on one end of the first stirring plate (524) and the second stirring plate (525) away from the first crossbar (522).

7. The diversion biological aeration filter according to claim 2, characterized in that: One end of the inner cylinder (21) close to the mud outlet pipe (221) is arranged in an open shape, and a second filter plate (7) is arranged between the inner wall of the inner cylinder (21) and the outer cylinder (22).

8. The diversion biological aeration filter according to claim 7, characterized in that: A second cross bar (8) is provided on the rotating rod (52), and a second brush plate (81) for cleaning the second filter plate (7) is provided on the end of the second cross bar (8) away from the rotating rod (52).

9. The diversion biological aeration filter according to claim 8, characterized in that: The outer cylinder (22) includes a straight cylinder portion (223) and a frustum portion (224), wherein the frustum portion (224) is arranged below the straight cylinder portion (223), and a plurality of second nozzles (2241) are arranged on the inner wall of the frustum portion (224).

10. The diversion biological aeration filter according to claim 9, characterized in that: A crossbeam (9) is provided in the straight cylinder portion (223), a water spray head (91) is provided on the crossbeam (9), and the crossbeam (9) is provided on a side of the second brush plate (81) close to the frustum portion (224).

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