Enhanced dewatering equipment and method for aerobic granular sludge

Abstract

The invention relates to the technical field of sewage treatment, and particularly discloses aerobic granular sludge reinforced dewatering equipment and method.The aerobic granular sludge reinforced dewatering equipment comprises a main beam, a pulling plate device, a filter pressing plate frame and filter cloth, a vibration assembly is arranged on the side face of the filter pressing plate frame and comprises a plurality of vibration rods, first elastic pieces and a control piece, and the vibration rods are arranged in the vertical direction; the two adjacent vibration rods are rotationally connected, the vibration rods are connected with the filter cloth, the first elastic piece is connected with the two adjacent vibration rods, and the control piece is arranged in the lug seat and matched with the main beam; a pushing piece is arranged on the plate pulling device; when the lug is far away from the main beam, the elastic piece I drives the vibration rods to rotate to reduce the included angle between the two vibration rods, and when the lug is close to the main beam, the control piece drives the vibration rods to reset, and reset vibration is transmitted to all parts of the filter cloth to remove residues; the enhanced dewatering equipment and method for the aerobic granular sludge have the effect of improving the dewatering efficiency.

Description

Technical Field

[0001] This invention relates to the technical field of wastewater treatment, specifically to an aerobic granular sludge enhanced dewatering equipment and method. Background Technology

[0002] Aerobic granular sludge is a compact microbial aggregate that spontaneously forms under aerobic conditions. Unlike traditional flocculent activated sludge, it does not require a carrier for fixation and relies on the aggregation of microorganisms to form granules. Due to microbial metabolism and water purification processes, aerobic granular sludge will generate excess sludge after operating in a wastewater treatment system for a period of time. This sludge must undergo dewatering treatment to reduce its volume and weight, facilitating transportation and disposal, reducing the risk of secondary pollution. Furthermore, dewatered aerobic granular sludge can be utilized as a resource.

[0003] Patent document CN110482824A discloses a sludge dewatering plate and frame filter press, including a support rod and a mounting frame. A support frame is fixedly connected to the top of the support rod, and an inclined plate is fixedly connected to the support frame. A conveying device is installed on the mounting frame and is located below the inclined plate. A sewage collection tank is also installed below the conveying device. A main beam is also fixedly connected to the support frame. A thrust plate is fixedly connected to one end of the main beam, and a machine base is fixedly connected to the other end. A drive device and a hydraulic station are fixedly installed on the upper end of the mounting frame. A connecting pipe is fixedly connected to the hydraulic station. The end of the connecting pipe away from the hydraulic station is fixedly connected to a hydraulic cylinder. The hydraulic cylinder is fixedly installed on the machine base. A pressure gauge is fixedly connected to the upper end of the hydraulic cylinder. A hydraulic rod is also telescopically connected to the hydraulic cylinder. The end of the hydraulic rod away from the hydraulic cylinder is fixedly connected to a pressing plate. A filter press frame is provided between the pressing plate and the thrust plate. The filter press frame matches the main beam. A sewage injection pipe is also fixedly connected to the thrust plate. The device uses a filter conveyor belt with filter holes. After the filter press above completes the filtration of sewage or sludge, the water tap on the side wall of the filter press frame is opened to discharge the water from the sewage or sludge that has completed the solid-liquid separation.

[0004] However, this solution still has the following problems. In the process of dewatering sludge using a filter press, the wastewater to be treated must first be introduced into the gaps between the filter plates and frames. After the wastewater is distributed, the water in the sludge is driven through the filter cloth by high pressure to achieve solid-liquid separation, and finally a filter cake with the required moisture content is formed between the filter plates and frames. However, in actual operation, if the filter cloth type does not match the characteristics of the sludge, the sludge conditioning process does not achieve the expected treatment effect, or the filter cloth is not thoroughly cleaned in time after use, the filter cake is very likely to adhere tightly to the surface of the filter cloth and is difficult to fall off naturally. Even if some existing technologies add a vibration mechanism to the equipment to assist the separation of the filter cake and the filter cloth, it is difficult to completely solve the problem of filter cloth residue. After the filter cake falls off, a certain amount of filter residue will still be attached to the surface of the filter cloth. This residual filter residue will block the filter pores of the filter cloth, which will adversely affect the efficiency and treatment effect of subsequent sludge dewatering operations. Summary of the Invention

[0005] This invention provides an aerobic granular sludge enhanced dewatering equipment and method, aiming to solve the problems in related technologies where filter cake adheres to the filter cloth and is difficult to remove, and filter residue remains block the pores, affecting dewatering efficiency when filter presses process sludge.

[0006] In a first aspect, the present invention provides an aerobic granular sludge enhanced dewatering device, comprising a main beam, a pulling plate device, a filter press frame, and a filter cloth sleeved on the outside of the filter press frame. The side of the filter press frame is provided with lugs placed on the main beam, and the side of the filter press frame is provided with a vibration assembly, which includes: a vibrating rod, an elastic element, and a control element. Multiple vibrating rods are arranged vertically, and two adjacent vibrating rods are rotatably connected. The vibrating rods are connected to the filter cloth. The elastic element is connected to two adjacent vibrating rods. The control element is disposed within the lugs and cooperates with the main beam. The pulling plate device is provided with a pushing element. When the pulling plate device pulls the filter press frame, the pushing element cooperates with the lugs and drives the filter press frame to move up and down reciprocally. When the lugs are away from the main beam, the elastic element drives the vibrating rods to rotate, reducing the angle between the two vibrating rods. When the lugs are close to the main beam, the control element drives the vibrating rods to reset, and the reset vibration is transmitted to all parts of the filter cloth to remove residue.

[0007] The effect is that by setting up a vibration component, the filter cloth is cleaned as the filter press frames move, thereby improving the cleaning effect. Specifically, after sludge dewatering, the pulling plate device sequentially pulls apart multiple abutting filter press frames. When the filter press frames separate from adjacent frames, the filter cake between them falls off under its own gravity. Simultaneously, as the filter press frames move, the pushing component drives the lugs to move up and down. With the up-and-down movement of the lugs and the action of the control component, the vibrating rod rotates back and forth, generating two types of vibration: vibration during the up-and-down movement of the lugs and vibration transmitted to the filter cloth during the reciprocating rotation of the vibrating rod. This evenly distributes the vibration to all parts of the filter cloth, facilitating the separation of the filter cake from the filter cloth and making it easier to clean residual filter residue, preventing clogging of the filter cloth pores and improving dewatering efficiency.

[0008] Preferably, the filter press frame has an installation frame on its side, and an installation groove is provided in the vertical direction inside the installation frame. An installation block is rotatably mounted at the center of the vibrating rod. The installation block slides up and down in the installation groove. An elastic element is provided in the installation groove and connected to the vibrating rod through the installation block. The elastic element is used to drive the two installation blocks to move closer to each other.

[0009] The elastic element moves the mounting block within the mounting groove, thereby causing the vibrating rod to rotate and adjusting its position.

[0010] Preferably, each pair of vibrating rods forms a group, and a rotating ring is provided between each group of vibrating rods. A stop bar parallel to the rotation axis of the vibrating rod is provided on the rotating ring, and the stop bar abuts against the side of the mounting frame so that the vibrating rod remains in an inclined state when it is reset.

[0011] By setting a stop bar, the vibrating rod can remain tilted during reset, so that the elastic element can pull the vibrating rod to rotate.

[0012] Preferably, the ear seat has a placement groove, and the control components include: a control rod that slides up and down in the placement groove, an elastic element two sleeved on the outside of the control rod, and a control rope. The elastic element two is used to drive the control rod to move downward so that the lower end of the control rod keeps in contact with the main beam. A connecting plate is provided at the upper end of the control rod. One end of the control rope is connected to the connecting plate, and the other end is connected to the rotating ring between one of the sets of vibrating rods. When the ear seat is away from the main beam, the elastic element two drives the control rod to move downward so that the lower end of the control rod always keeps in contact with the main beam. At the same time, the elastic element one drives the vibrating rod to rotate and pulls the control rope synchronously. When the ear seat is close to the main beam, the control rod moves upward and pulls the control rope, causing the vibrating rod to rotate and reset.

[0013] When the ear seat moves up and down, the control rod moves accordingly under the action of the second elastic element, thereby pulling the control rope or releasing the tension on the control rope, so as to cooperate with the first elastic element to drive the vibrating rod to rotate, thereby realizing the reciprocating rotation of the vibrating rod.

[0014] Preferably, vibration rods are provided on both sides of the mounting frame, and two control ropes are provided corresponding to the vibration rods on both sides of the mounting frame. The ends of the two control ropes away from the rotating ring are connected to the connecting plate.

[0015] Preferably, tensioning components are provided at both the upper and lower ends of the mounting frame. The tensioning components include: a tensioning plate that slides vertically and vertically on the mounting frame, a tensioning wheel that rotates on the tensioning plate, and an elastic element three connected to the tensioning plate and the mounting frame. The elastic element three is used to drive the tensioning wheel to abut against the filter cloth to tension the filter cloth.

[0016] Preferably, a slot is provided through the ear seat along the length of the main beam, the pusher is located below the ear seat, and the output end of the pusher is provided with an insert plate. When the pull plate device cooperates with the ear seat, the insert plate moves into the slot.

[0017] Preferably, the main beam is provided with slide rails at intervals on its side, and the pull plate device includes: a pull plate seat slidably mounted on the slide rail and a pull plate hook rotatably mounted on the pull plate seat, and a pusher is installed on the side of the pull plate seat and the pusher is located between the pull plate seat and the main beam.

[0018] Preferably, an auxiliary plate is provided on the pull plate base, and a limit frame is provided on the side of the auxiliary plate near the ear seat. The limit frame is located above the pull plate hook. When the pusher drives the ear seat to move up and down, the ear seat reciprocates within the limit frame simultaneously.

[0019] Secondly, the present invention provides a method for enhanced dewatering of aerobic granular sludge, using the aforementioned enhanced dewatering equipment for aerobic granular sludge, comprising the following steps: The pull plate seat moves to the ear seat, the pull plate hook engages with the ear seat, and the insert plate moves into the slot; The pull plate seat moves the ear seat and the filter press frame through the pull plate hook, causing the two filter press frames that were in contact with each other to separate. The pusher drives the ear seat to move up and down above the pull plate seat, and the vibrating rod rotates back and forth accordingly. The generated vibration is evenly transmitted to all parts of the filter cloth to remove the filter residue remaining on the filter cloth. The plate holder moves back and forth, repeating the above operation to pull open multiple filter press frames in sequence.

[0020] By cooperating with the pusher and the ear seat, and under the action of the vibrating rod, the filter press frame vibrates up and down, and the vibrating rod can drive the filter cloth to vibrate in various places, so as to achieve the cleaning effect of filter cake on the filter cloth.

[0021] Beneficial effects: This invention uses multiple rotating vibrating rods connected to the filter cloth on the mounting frame. When the ear seat moves up and down and drives the filter press frame to move, the vibrating rods reciprocate. When the vibrating rods reciprocate, they cause the corresponding filter cloth parts to reciprocate and deform and tighten, so as to transmit vibration to all parts of the filter cloth. At the same time, when the filter cloth is tightened, the residue on the surface of the filter cloth can be separated from the filter cloth under the action of inertia, improving the cleaning effect of the filter cloth and improving the dewatering efficiency of the filter cloth. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 This is a schematic diagram of the pull plate device in this invention.

[0024] Figure 3 This is a schematic diagram showing the fit between the lug and the main beam of the present invention.

[0025] Figure 4 This is a partial exploded view of the ear seat and pull plate seat in this invention.

[0026] Figure 5 This is a schematic diagram of the structure of the filter cloth and filter press frame in this invention.

[0027] Figure 6 This is a schematic diagram of the tensioning component in this invention.

[0028] Figure 7 This is a partial exploded view of the mounting frame and vibration rod in this invention.

[0029] Figure 8 This is a schematic diagram of the structure of the elastic element and the mounting frame in this invention.

[0030] Figure 9 This is a schematic diagram of the vibration component in this invention.

[0031] Figure 10 This is a schematic diagram showing the relationship between the control rod and the main beam of this invention.

[0032] Figure label: 1. Main beam; 11. Slide rail; 2. Pulling plate device; 21. Pulling plate seat; 211. Auxiliary plate; 212. Limiting frame; 22. Pulling plate hook; 3. Filter press plate frame; 31. Ear seat; 311. Placement groove; 312. Slot; 4. Filter cloth; 5. Vibration assembly; 51. Vibration rod; 52. Elastic component one; 53. Control component; 531. Control rod; 532. Elastic component two; 533. Control rope; 534. Connecting plate; 6. Pushing component; 61. Insert plate; 7. Mounting frame; 71. Mounting groove; 72. Mounting block; 8. Rotating ring; 81. Stop bar; 9. Tensioning assembly; 91. Tensioning plate; 92. Tensioning wheel; 93. Elastic component three. Detailed Implementation

[0033] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0034] This invention discloses an aerobic granular sludge enhanced dewatering equipment.

[0035] Reference Figures 1 to 10 The aerobic granular sludge enhanced dewatering equipment includes a main beam 1, a plate-pulling device 2, a filter press frame 3, and a filter cloth 4 fitted over the filter press frame 3. Two main beams 1 are arranged in parallel. Multiple sets of filter press frames 3 are arranged horizontally. The filter press frames 3 are supported between the two main beams 1 by symmetrically arranged lugs 31 on both sides, and are arranged linearly along the length of the main beams 1. Each set of filter press frames 3 is fitted with a filter cloth 4. The plate-pulling device 2 is connected to the lugs 31 of each filter press frame 3 through a mechanical transmission structure, enabling adjustment of the position of the filter press frames 3.

[0036] In the actual dewatering process, the equipment first activates the hydraulically driven cylinder. The cylinder output shaft drives the filter press frame 3 to move along the length of the main beam 1 with a stable thrust, so that multiple sets of frames are tightly abutted against each other, and the sealing surfaces of adjacent frames are completely in contact, forming multiple independent and sealed filter chambers. Subsequently, the aerobic granular sludge to be treated is pumped into each filter chamber at a preset pressure by the feed pump. After the sludge fills the chamber, the equipment activates the pressurization system. By increasing the pressure in the chamber, the water in the sludge is forced to penetrate the filter cloth 4 under the action of the pressure difference. The microporous structure allows the seeping water to be collected and discharged through the drainage channels on the filter press frame 3, while the solid particles in the sludge are trapped by the filter cloth 4, gradually forming a filter cake of uniform thickness between adjacent filter press frames 3. Once the moisture content of the filter cake reaches the preset requirement, the pressurization system stops working, and the plate pulling device 2 starts according to the preset program, pulling each filter press frame 3 in sequence, causing the originally tightly connected frames to separate one by one. After the filter cake between the frames loses its support, it falls naturally into the receiving device below under the action of gravity, completing a single dewatering operation.

[0037] Reference Figures 6 to 9To achieve efficient removal of residual filter residue on the surface of filter cloth 4 and prevent filter residue from clogging the micropores of filter cloth 4 and affecting subsequent dewatering efficiency, a vibration assembly 5 is provided on the side of the filter press frame 3. The vibration assembly 5 includes a vibration rod 51, an elastic element 52, and a control element 53. Multiple vibration rods 51 are provided, and the multiple vibration rods 51 are distributed in a vertical direction. Adjacent vibration rods 51 are connected by a hinge to achieve rotational connection. The free end of the vibration rod 51 is tightly connected to the non-filtered area of ​​the filter cloth 4 to ensure that the movement of the vibration rod 51 can be directly transmitted to the filter cloth 4. Multiple elastic elements 52 are provided, and the elastic element 52 is located between two adjacent vibration rods 51 and connected to the two adjacent vibration rods 51. The elastic element 52 is set as a spring to provide a continuous elastic driving force for the reset and rotation of the vibration rod 51. The control element 53 is located inside the ear seat 31, and its trigger end extends to the mating surface between the ear seat 31 and the main beam 1, and can mate with the surface of the main beam 1.

[0038] Reference Figures 2 to 4 In addition, the plate pulling device 2 is equipped with a pusher 6. When the plate pulling device 2 pulls the filter press frame 3 to move along the length of the main beam 1, the pusher 6 can continuously cooperate with the ear seat 31 and generate interaction, thereby driving the filter press frame 3 to vibrate up and down while moving horizontally.

[0039] During actual operation, when the pulling plate device 2 pulls the filter press frame 3 to move, and the pushing component 6 pushes the ear seat 31 upward, the ear seat 31 moves upward and gradually moves away from the main beam 1. The trigger end of the control component 53 keeps in contact with the main beam 1. At this time, the elastic force of the elastic component 52 begins to dominate the movement of the vibrating rod 51, driving the adjacent vibrating rod 51 to rotate around the hinge point, so that the included angle between the two vibrating rods 51 gradually decreases, thereby causing the filter cloth 4 connected to it to undergo local deformation, initially shaking off some of the filter residue attached to the surface of the filter cloth 4. When the ear seat 31 moves with the filter press frame 3 to be close to the main beam 1, the control component 53 drives the vibrating rod 51 to rotate in the opposite direction, driving the vibrating rod 51 to complete the reset action. The vibration energy generated during the reset is evenly transmitted to all parts of the filter cloth 4 through the vibrating rod 51. The filter press frame 3 moves up and down and cooperates with the vibrating rod 51 to rotate back and forth, so as to thoroughly remove the filter residue remaining on the surface of the filter cloth 4, ensuring that the filtration performance of the filter cloth 4 is restored to the initial state, providing a reliable guarantee for the efficient development of subsequent dewatering operations.

[0040] Reference Figure 7 and Figure 8A mounting frame 7 is fixedly installed on the side of the filter press frame 3. A mounting groove 71 is vertically formed inside the mounting frame 7. A mounting block 72 is rotatably mounted at the center of the vibrating rod 51. This mounting block 72 forms a sliding fit with the mounting groove 71, allowing it to slide up and down along the extension direction of the groove 71. An elastic element 52 is built into the mounting groove 71, with its two ends connected to the corresponding mounting blocks 72. By pulling the mounting blocks 72 closer together, the vibrating rod 51 rotates around its center. Initially, the elastic element 52 is in a stretched state and stores elastic potential energy. When the lug 31 moves upward with the filter press frame 3, the elastic element 52 releases its stored elastic potential energy, pulling the mounting blocks 72 closer together along the mounting groove 71. This drives the vibrating rod 51 to rotate around the central mounting block 72, gradually reducing the angle between adjacent vibrating rods 51. This causes the filter cloth 4 connected to it to undergo localized tensile deformation, providing the power basis for subsequent filter cake removal. In addition, multiple sets of elastic elements 52 are provided for adjacent vibrating rods 51, and the elastic force parameters of each set of elastic elements 52 are consistent, thereby ensuring that the rotation angles of adjacent vibrating rods 51 remain synchronized.

[0041] Each pair of vibrating rods 51 forms a linkage unit. A rotating ring 8 is fitted between the vibrating rods 51 in each linkage unit. A stop bar 81, parallel to the rotation axis of the vibrating rod 51, is fixed on the rotating ring 8. After the vibrating rod 51 is reset, the stop bar 81 abuts against the side of the mounting frame 7, limiting the movement trajectory of the vibrating rod 51 and maintaining it in a preset tilted state. By ensuring that the vibrating rod 51 maintains its tilted posture at its initial position, a reasonable initial angle is provided for the elastic element 52 to pull the vibrating rod 51 to rotate around the mounting block 72, preventing the vibrating rod 51 from being in a vertical state after reset and affecting the force transmission efficiency of the elastic element 52.

[0042] Reference Figure 9 and Figure 10 The ear seat 31 has a placement groove 311 inside for mounting the control component 53. The control component 53 includes a control rod 531, an elastic element 532, and a control rope 533. The control rod 531 is mounted in the placement groove 311 in a sliding fit manner and can move freely up and down along the vertical direction of the placement groove 311. The elastic element 532 is a spring structure and is sleeved on the outside of the control rod 531. Its elastic force can drive the control rod 531 to move downward, so that the end of the control rod 531 near the main beam 1 always maintains a tight contact with the surface of the main beam 1. The end of the control rod 531 near the main beam 1 is the trigger end. A connecting plate 534 is fixedly installed on the upper end of the control rod 531. One end of the control rope 533 is fixedly connected to the connecting plate 534, and the other end is connected to the rotating ring 8 between one of the sets of vibration rods 51.

[0043] As the ear seat 31 and the filter press frame 3 move upward and gradually move away from the main beam 1, the elastic driving force of the elastic element 532 continues to push the control rod 531 downward, ensuring that the trigger end of the control rod 531 remains stably in contact with the surface of the main beam 1. At this time, the elastic element 52 releases its stored elastic potential energy, pulling the mounting blocks 72 closer together in the mounting groove 71, thereby driving the vibrating rod 51 to rotate, so that the included angle between adjacent vibrating rods 51 gradually decreases. During this process, the rotation of the vibrating rod 51 will synchronously pull the control rope 533, causing the control rope 533 to move with the vibration. The movement of the moving rod 51 generates adaptive tension; when the ear seat 31 and the filter press frame 3 move close to the main beam 1, the surface of the main beam 1 forms an upward reaction force on the trigger end of the control rod 531. This reaction force overcomes the elastic force of the elastic element 532 and pushes the control rod 531 to move upward along the placement groove 311. The connecting plate 534 at the upper end of the control rod 531 moves upward accordingly and pulls the control rope 533 through the connecting plate 534. The tension of the control rope 533 is transmitted to the rotating ring 8 connected to it, thereby driving the vibrating rod 51 to rotate in the opposite direction and completing the reset action.

[0044] Reference Figure 9 Vibration rods 51 are symmetrically arranged on both sides of the mounting frame 7. Control ropes 533 are also configured in a one-to-one correspondence with the vibration rods 51 on both sides of the mounting frame 7. That is, two control ropes 533 are provided, and the ends of the two control ropes 533 away from the rotating ring 8 are fixedly connected to the connecting plate 534 at the upper end of the control rod 531. When the control rod 531 moves up and down in the placement groove 311, the tension can be transmitted synchronously through the two control ropes 533, and the vibration rods 51 on both sides of the mounting frame 7 can be adjusted in linkage. This will drive the filter cloths 4 on both sides of the filter press plate frame 3 to vibrate and deform synchronously, so as to achieve all-round and dead-angle cleaning of the filter residue residue on the surface of the filter cloth 4, and avoid affecting the overall dewatering efficiency due to incomplete cleaning of the filter cloth 4 on one side.

[0045] Reference Figures 2 to 4The main beam 1 has parallel and spaced slide rails 11 on its side along its length, meaning the slide rails 11 extend in the same direction as the main beam 1. The plate-pulling device 2 includes a plate-pulling seat 21 and a plate-pulling hook 22. The plate-pulling seat 21 is slidably mounted on the slide rails 11 and can move freely along the length of the slide rails 11. The plate-pulling hook 22 is rotatably mounted above the plate-pulling seat 21 via a pivot. Its structure adopts a conventional ear-shaped pull design, allowing it to engage with the ear-shaped seat 31 when moved, thereby driving the ear-shaped seat 31 and the corresponding filter press frame 3 to move synchronously. The specific structure and basic working principle of the plate-pulling hook 22 are well known to those skilled in the art and will not be described in detail here. The pushing member 6 is installed on the side of the plate-pulling seat 21 near the main beam 1 and is located between the plate-pulling seat 21 and the main beam 1. The pull plate base 21 is equipped with a drive mechanism, which can be a chain drive or other means, to provide stable and controllable moving power for the pull plate base 21, ensuring that the pull plate base 21 moves smoothly along the slide rail 11.

[0046] When the equipment completes the dewatering process and the filter press frame 3 needs to be pulled apart to allow the filter cake to fall and the filter cloth 4 to be cleaned, the drive mechanism first moves the pull plate seat 21 along the slide rail 11 to the ear seat 31 of the target filter press frame 3. At this time, the pull plate hook 22 engages with the ear seat 31, and the pusher 6 engages with the ear seat 31. Subsequently, the drive mechanism continues to move the pull plate seat 21 along the slide rail 11, and the pull plate hook 22 moves the ear seat 31 and the filter press frame 3 horizontally along the slide rail 11, realizing the pulling action of the filter press frame 3. At the same time, the pusher 6 continuously drives the ear seat 31 and the filter press frame 3 to move up and down as the pull plate seat 21 moves. This results in a combined motion of horizontal movement and vertical vibration of the ear seat 31.

[0047] Reference Figures 2 to 4 An auxiliary plate 211 is provided on the pull plate seat 21. The auxiliary plate 211 is fixed to the pull plate seat 21 by bolts. The auxiliary plate 211 is located on the side of the ear seat 31 away from the filter press frame 3. A limiting frame 212 is provided on the side of the auxiliary plate 211 facing the ear seat 31. The limiting frame 212 is located above the pull plate hook 22, and its opening direction is adapted to the vertical movement trajectory of the ear seat 31, and it has an open structure facing the ear seat 31.

[0048] When the pusher 6 drives the ear seat 31 to move up and down with the filter press frame 3, the ear seat 31 moves synchronously within the limiting frame 212. The limiting frame 212 cooperates with the ear seat 31 to prevent the ear seat 31 from disengaging from the pull plate hook 22 during the up and down vibration process, ensuring that the ear seat 31 always maintains a stable connection with the pull plate device 2, thereby ensuring that the filter press frame 3 remains stable during the combined motion of horizontal movement and up and down vibration.

[0049] Reference Figure 4 and Figure 10The ear seat 31 has a through slot 312 that extends along the length of the main beam 1. The pusher 6 adopts a cylinder structure with controllable stroke and is installed as a whole on the side of the pull plate seat 21 facing the filter press frame 3, and is located below the ear seat 31. Its output shaft is set vertically towards the ear seat 31. The output end of the pusher 6 is fixedly connected to an insert plate 61 that matches the cross-section of the slot 312. The insert plate 61 is kept horizontally arranged.

[0050] When the pull plate device 2 begins to pull, the pull plate base 21 moves along the slide rail 11 to the target ear 31 under the drive of the drive mechanism. The pull plate hook 22 first engages with the ear 31, achieving a preliminary connection between the pull plate device 2 and the ear 31. At the same time, the insert plate 61 moves synchronously with the pull plate base 21, aligning with the slot 312 on the ear 31, and moves into the interior of the slot 312, finally achieving a precise engagement with the slot 312, forming a connection between the pusher 6 and the ear 31. At this time, the pusher 6 drives the ear 31 to move up and down reciprocally through the engagement structure between the insert plate 61 and the slot 312, thereby adjusting the position of the ear 31. To facilitate the insertion of the insert into the slot 312, the cross-section of the slot 312 can be set to be slightly larger than the cross-section of the insert, or a chamfer can be provided on the side of the slot 312 to increase the size of the side of the slot 312, so that the insert moves with the pull plate base 21 to engage with the slot 312.

[0051] Reference Figure 5 and Figure 6 Tensioning components 9 are symmetrically arranged at both the upper and lower ends of the mounting frame 7. The tensioning components 9 include a tensioning plate 91, a tensioning wheel 92, and an elastic element 93. The tensioning plate 91 can slide up and down along the mounting frame 7. The tensioning wheel 92 is rotatably mounted on the tensioning plate 91. The elastic element 93 connects the tensioning plate 91 and the mounting frame 7. The elastic element 93 is a spring structure. Its elastic driving force can push the tensioning plate 91 to drive the tensioning wheel 92 to always keep it in close contact with the surface of the filter cloth 4, thereby achieving continuous tension of the filter cloth 4. When the vibrating rod 51 rotates and causes the filter cloth 4 to vibrate and deform, the tensioning wheel 92 and the tensioning plate 91 can move adaptively with the shape change of the filter cloth 4. At the same time, under the continuous elastic action of the elastic element 3 93, the tensioning wheel 92 can always maintain contact with the filter cloth 4. This design not only ensures that the filter cloth 4 maintains a stable tension after the vibrating rod 51 is reset, providing good filtration conditions for the subsequent sludge to enter the filtration chamber, but also increases the amplitude and force of the vibration of the filter cloth 4 through the contact action of the tensioning wheel 92, helping to shake off the filter cake residue remaining on the surface of the filter cloth 4, and further enhancing the sludge cleaning effect.

[0052] The implementation principle of the present invention is as follows: After the pull plate seat 21 moves along the slide rail 11 to the target ear seat 31, it simultaneously drives the pull plate hook 22 to cooperate with the ear seat 31. The insert plate 61 at the output end of the pusher 6 also engages with the slot 312 on the ear seat 31. At this time, the movement of the pull plate seat 21 along the slide rail 11 is transmitted to the filter press frame 3 through the snap-fit ​​relationship between the pull plate hook 22 and the ear seat 31, driving the filter press frame 3 to move horizontally in sync. At the same time, the pusher 6 drives the ear seat 31 and the filter press frame 3 to move up and down in sync through the snap-fit ​​structure between the insert plate 61 and the slot 312. When the ear seat 31 moves upward with the filter press frame 3, the elastic element 52 releases its elastic potential energy, causing the vibrating rod 51 to rotate, thus reducing the angle between adjacent vibrating rods 51. When the ear seat 31 moves downward with the filter press frame 3, the reaction force of the main beam 1 pushes the control rod 531 upward along the placement groove 311. The control rod 531 pulls the control rope 533 through the upper connecting plate 534, thereby causing the vibrating rod 51 to rotate in the opposite direction and reset. During the repeated rotation and reset cycle of the vibrating rod 51, its connection with the filter cloth 4 causes the filter cloth 4 to complete the bending and tensioning actions synchronously. When the vibrating rod 51 rotates, various parts of the filter cloth 4 bend or deform with its movement. The vibration energy generated during reset is evenly transmitted to all parts of the filter cloth 4 through the vibrating rod 51. Combined with the up-and-down vibration of the filter press frame 3 itself, this achieves efficient removal of the filter cake between the two filter cloths 4 and the residual filter residue on the surface of the filter cloth 4, ensuring that the filter cloth 4 always maintains a good filtration effect, providing a guarantee for the stable operation of subsequent dewatering operations, and ensuring the dewatering efficiency of the sludge.

[0053] The present invention also discloses an enhanced dewatering method for aerobic granular sludge, which uses the above-mentioned enhanced dewatering equipment for aerobic granular sludge.

[0054] An enhanced dewatering method for aerobic granular sludge includes the following steps: S1, the pull plate seat 21 moves to the ear seat 31, the pull plate hook 22 engages with the ear seat 31, and the insert plate 61 moves into the slot 312; S2, the pull plate seat 21 drives the ear seat 31 and the filter press frame 3 to move through the pull plate hook 22, thereby causing the two filter press frames 3 that are in contact with each other to separate; S3, the pusher 6 drives the ear seat 31 to move up and down above the pull plate seat 21, and the vibrating rod 51 rotates back and forth accordingly, and the generated vibration is evenly transmitted to all parts of the filter cloth 4 to remove the filter residue remaining on the filter cloth 4. S4, the pull plate seat 21 moves back and forth, repeating the above operation to pull open the multiple filter press frames 3 in sequence.

[0055] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An aerobic granular sludge enhanced dewatering device, comprising a main beam, a plate pulling device, a filter press frame, and a filter cloth sleeved on the outside of the filter press frame, wherein the side of the filter press frame is provided with an ear seat placed on the main beam, characterized in that, The filter press frame is equipped with a vibration assembly on its side, which includes a vibrating rod, an elastic element, and a control element. Multiple vibrating rods are arranged vertically, and two adjacent vibrating rods are rotatably connected. The vibrating rods are connected to the filter cloth. The elastic element is connected to two adjacent vibrating rods. The control element is located within an ear and cooperates with the main beam. A pushing element is provided on the pulling plate device. When the pulling plate device pulls the filter press frame, the pushing element cooperates with the ear and drives the filter press frame to move up and down reciprocally. When the ear is away from the main beam, the elastic element drives the vibrating rod to rotate, reducing the angle between the two vibrating rods. When the ear is close to the main beam, the control element drives the vibrating rod to reset. The reset vibration is transmitted to all parts of the filter cloth to remove residue.

2. The aerobic granular sludge enhanced dewatering equipment according to claim 1, characterized in that, The filter press frame has an installation frame on its side, and an installation groove is provided in the vertical direction inside the installation frame. An installation block is rotatably mounted at the center of the vibrating rod. The installation block slides up and down in the installation groove. An elastic element is set in the installation groove and connected to the vibrating rod through the installation block. The elastic element is used to drive the two installation blocks to move closer to each other.

3. The aerobic granular sludge enhanced dewatering equipment according to claim 2, characterized in that, Each pair of vibrating rods forms a group, and a rotating ring is provided between each group of vibrating rods. A stop bar parallel to the rotation axis of the vibrating rod is provided on the rotating ring. The stop bar abuts against the side of the mounting frame so that the vibrating rod remains tilted when it is reset.

4. The aerobic granular sludge enhanced dewatering equipment according to claim 3, characterized in that, The ear seat has a placement groove. The control components include: a control rod that slides up and down in the placement groove, an elastic element two sleeved on the outside of the control rod, and a control rope. The elastic element two is used to drive the control rod to move downward so that the lower end of the control rod keeps in contact with the main beam. A connecting plate is provided at the upper end of the control rod. One end of the control rope is connected to the connecting plate, and the other end is connected to the rotating ring between one of the sets of vibrating rods. When the ear seat is away from the main beam, the elastic element two drives the control rod to move downward so that the lower end of the control rod always keeps in contact with the main beam. At the same time, the elastic element one drives the vibrating rod to rotate and pulls the control rope synchronously. When the ear seat is close to the main beam, the control rod moves upward and pulls the control rope, causing the vibrating rod to rotate and reset.

5. The aerobic granular sludge enhanced dewatering equipment according to claim 4, characterized in that, Vibration rods are installed on both sides of the mounting frame. Two control ropes are installed on each side of the mounting frame, and the ends of the two control ropes that are away from the rotating ring are connected to the connecting plate.

6. The aerobic granular sludge enhanced dewatering equipment according to claim 1, characterized in that, Tensioning components are provided at both the top and bottom ends of the mounting frame. The tensioning components include: a tensioning plate that slides up and down on the mounting frame, a tensioning wheel that rotates on the tensioning plate, and an elastic element three that is connected to the tensioning plate and the mounting frame. The elastic element three is used to drive the tensioning wheel to abut against the filter cloth to tension the filter cloth.

7. The aerobic granular sludge enhanced dewatering equipment according to claim 5, characterized in that, A slot is provided through the ear seat along the length of the main beam. The pusher is located below the ear seat. The output end of the pusher is provided with an insert plate. When the pull plate device cooperates with the ear seat, the insert plate moves into the slot.

8. The aerobic granular sludge enhanced dewatering equipment according to claim 7, characterized in that, The main beam is provided with slide rails at intervals on its side. The pull plate device includes a pull plate seat that is slidably mounted on the slide rail and a pull plate hook that is rotatably mounted on the pull plate seat. The pusher is installed on the side of the pull plate seat and is located between the pull plate seat and the main beam.

9. The aerobic granular sludge enhanced dewatering equipment according to claim 8, characterized in that, An auxiliary plate is provided on the pull plate base. A limit frame is provided on the side of the auxiliary plate near the ear seat. The limit frame is located above the pull plate hook. When the pusher drives the ear seat to move up and down, the ear seat reciprocates within the limit frame simultaneously.

10. A method for enhanced dewatering of aerobic granular sludge, employing the aerobic granular sludge enhanced dewatering equipment as described in claim 9, characterized in that... Includes the following steps: The pull plate seat moves to the ear seat, the pull plate hook engages with the ear seat, and the insert plate moves into the slot; The pull plate seat moves the ear seat and the filter press frame through the pull plate hook, causing the two filter press frames that were in contact with each other to separate. The pusher drives the ear seat to move up and down above the pull plate seat, and the vibrating rod rotates back and forth accordingly. The generated vibration is evenly transmitted to all parts of the filter cloth to remove the filter residue remaining on the filter cloth. The plate holder moves back and forth, repeating the above operation to pull open multiple filter press frames in sequence.

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