A kind of inclined tube inclined plate backwashing mechanism and sedimentation tank and its using method

Abstract

The present application belongs to the technical field of sewage treatment, and in particular to a kind of inclined tube and inclined plate backwashing mechanism and sedimentation tank and its use method, solve the problem that traditional inclined tube and inclined plate sedimentation tank cleaning needs to stop production, easy to stir sludge, effluent is easy turbidity;Mechanism includes sedimentation tank main body, inclined plate main component, movable frame and flushing structure;Flushing structure contains gas cleaning pipe, through Roots blower air supply, the gas blow-through hole of inclined arrangement is cleaned to inclined plate;Adjusting structure adjusts the height of gas cleaning pipe, avoids stirring bottom sludge;Suction structure contains liquid absorption plate, cooperates with liquid pump and separates turbid sludge water;Isolation baffle and barrier sleeve isolate bottom sludge and shield gas blow-through hole above respectively;Liquid discharge groove both sides are equipped with vertical connecting plate, with movable frame moves barrier turbid sludge water into;Sedimentation tank contains the above mechanism, realizes cleaning without stopping production, improves sedimentation efficiency, and guarantees effluent quality.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to an inclined tube and inclined plate backwashing mechanism and a sedimentation tank and its usage method. Background Technology

[0002] In the field of wastewater treatment, sedimentation tanks are commonly used water treatment equipment. Their function is to separate suspended solids in wastewater by gravity settling. Inclined plate and tube sedimentation tanks are a common type of sedimentation tank. By setting inclined plates or tubes inside the sedimentation tank, the sedimentation area is increased, the particle settling distance is shortened, and thus the sedimentation efficiency is improved.

[0003] However, after prolonged use, sludge and impurities accumulate on the surface of the inclined tubes or plates, affecting the sedimentation effect. Traditional cleaning methods require lowering the water level before manual cleaning, leading to downtime and low efficiency. Furthermore, the rinsing process easily stirs up the bottom sludge, increasing the turbidity of the effluent, affecting the stability of subsequent treatment processes, and increasing the treatment load. In addition, the turbid muddy water during rinsing may mix with the settled effluent, resulting in substandard effluent. Summary of the Invention

[0004] This invention addresses the practical challenges of inclined tube / plate cleaning in wastewater treatment, which requires shutdown and is prone to turbidity. Through verification and research, it proposes an inclined tube / plate backwashing mechanism, a sedimentation tank, and its usage method. The design starts from basic requirements and forms a layered protection system: the core layer uses inclined air-blowing gas cleaning pipes to achieve cleaning without shutdown; the extended layer adds height-adjustable sludge-avoidance; and the auxiliary layer integrates turbidity suction, isolation baffles, barrier sleeves, and vertical barriers to ensure water quality.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A backwashing mechanism for inclined tubes and plates, comprising: The sedimentation tank body has a liquid injection pipe fixedly connected and communicated on one side for injecting sewage into the sedimentation tank body. Multiple inclined plate main body components located above the liquid injection pipe are fixed inside the sedimentation tank body. The movable frame is slidably installed within the main body of the sedimentation tank; The flushing structure includes multiple gas cleaning pipes that slide through the movable frame. The gas cleaning pipes are disposed between two adjacent inclined plate main components and are arranged parallel to the inclined plate main components. One side of the gas cleaning pipe is provided with multiple air blowing holes for spraying air. The suction structure includes multiple liquid absorption plates fixed within the movable frame. The liquid absorption plates are disposed between two adjacent inclined plate main components and correspond to the gas cleaning pipe. The air ejected from the air-blowing holes can clean the main component of the inclined plate, achieving uninterrupted flushing; the suction structure is used to remove the mud and water that are in a state of agitation during cleaning.

[0006] In one possible design, the flushing structure further includes a gas collecting pipe and multiple gas injection pipes I. The top ends of the multiple gas injection pipes I are fixedly connected to and extend into the gas collecting pipe, and their bottom ends are fixedly connected to and extend into the corresponding gas cleaning pipes. One end of the gas collecting pipe is fixedly connected to a gas injection pipe II for communication with an external air source. The air blowing holes are arranged obliquely with the axis of the gas cleaning pipe as the center, so that the discharged air can clean the inclined plate main component.

[0007] In one possible design, an adjustment structure is also included, which includes a drive motor, a threaded rod driven by the drive motor, and a sliding sleeve that is slidably sleeved on the outer wall of the gas collecting pipe. A threaded connecting sleeve is fixed to the bottom of the sliding sleeve, and the threaded rod is threadedly connected to the threaded connecting sleeve. The drive motor drives the threaded rod to rotate, which in turn drives the sliding sleeve and the gas collection pipe to rise and fall through the threaded connecting sleeve. In turn, the gas injection pipe I drives the gas cleaning pipe to rise and fall to adjust its height and avoid stirring the settled sludge.

[0008] In one possible design, the suction structure further includes a liquid collection pipe and a pump. The liquid collection pipe is fixed to one side of the plurality of liquid absorption plates and connected to the corresponding liquid absorption plates through through holes. The pump is fixed to one side of the sedimentation tank body. The inlet end of the pump is connected to the liquid collection pipe through a liquid extraction pipe, and its outlet end is connected to the liquid injection pipe through a liquid return pipe. The pump is used to draw out the turbid mud and water generated during cleaning and re-inject it into the sedimentation tank for sedimentation.

[0009] In one possible design, isolation baffles are hinged to the bottom of both sides of the movable frame, and the isolation baffles are kept in an inclined position by torsion springs; When the movable frame moves, the isolation baffle can isolate the sludge that has settled at the bottom of the sedimentation tank.

[0010] In one possible design, multiple barrier sleeves are also included, each of which is slidably sleeved on the outer wall of the corresponding gas cleaning pipe, and each of which has a limit baffle fixed at its bottom, the limit baffle overlapping the top of the corresponding inclined plate main component. The blocking sleeve is used to block the air blowing hole located above the inclined plate main component to prevent the air ejected from stirring the upper layer of water.

[0011] In one possible design, the top of the sedimentation tank body is rotatably connected to a threaded drive rod and fixed to a fixed support rod. Both sides of the movable frame are fixed with connecting lugs, one of which is threadedly connected to the threaded drive rod, and the other is slidably connected to the fixed support rod. The rotation of the threaded transmission rod can drive the movable frame to reciprocate within the sedimentation tank body.

[0012] A sedimentation tank includes the aforementioned inclined tube and inclined plate backwashing mechanism, and further includes a liquid discharge tank fixed in the main body of the sedimentation tank. One end of the liquid discharge tank is fixedly connected to a liquid discharge pipe, and both sides are provided with serrated weirs for introducing the supernatant after sedimentation into the liquid discharge tank.

[0013] In one possible design, vertical connecting plates are slidably connected to both sides of the liquid discharge tank, and motion trajectory grooves are provided on the side of the two vertical connecting plates that are far apart from each other. Positioning pins are slidably arranged in the two motion trajectory grooves, and the two positioning pins are fixed to the movable frame. When the movable frame moves, the vertical connecting plate is driven to rise by the cooperation of the positioning pin and the motion trajectory groove, so as to block the sawtooth weir and prevent turbid water during cleaning from entering the liquid discharge tank.

[0014] This application discloses a method of using a sedimentation tank, comprising the following steps: S1. Wastewater is injected into the main body of the sedimentation tank through the liquid injection pipe. The wastewater settles in the main body of the sedimentation tank. Among them, the particulate suspended matter in the wastewater settles on the inclined plate main body component. As the amount of sediment on the inclined plate main body component increases, the sediment slides down the inclined surface of the inclined plate main body component under the action of gravity and collects and settles at the bottom of the main body of the sedimentation tank. When it is necessary to clean the sediment remaining on the inclined plate main body component, the screw transmission rod is driven by the motor to rotate. The screw transmission rod and the connecting lug drive the movable frame to move back and forth in the main body of the sedimentation tank. S2. The Roots blower injects air into the gas collection pipe through the gas injection pipe II. The air is discharged to the outside through the air blowing holes along with the gas injection pipe I and the gas cleaning pipe. The air blowing holes are arranged at an angle with the central axis of the gas cleaning pipe as the center, so that the air discharged from the air blowing holes can clean the main components of the inclined plate. S3. Since the thickness of the sludge layer at the bottom of the sedimentation tank varies, the height of the gas cleaning pipe is adjusted according to the thickness of the sludge layer at the bottom of the sedimentation tank to prevent the bottom sludge from being carried up during flushing. The drive motor drives the threaded rod to rotate, and the cooperation between the threaded rod and the threaded connecting sleeve drives the sliding sleeve and the gas collecting pipe to rise and fall. While the gas collecting pipe is rising and falling, the gas injection pipe I drives the gas cleaning pipe to slide within the movable frame, thereby adjusting the height of the gas cleaning pipe. This prevents the sludge at the bottom of the sedimentation tank from being carried up when flushing the inclined plate main component. In addition, during the rising and falling of the gas cleaning pipe, the blocking sleeve is always placed on top of the inclined plate main component under the action of the limiting baffle. Therefore, the blocking sleeve can block the air blowing holes located above the inclined plate main component, preventing the air ejected from the air blowing holes above from agitating the sewage above, which would increase the turbidity of the effluent and affect the stability of the subsequent sewage treatment process, thus increasing the load on the subsequent treatment process. S4. To further prevent the sewage above from being stirred up, multiple liquid absorption plates are installed in the movable frame. When air is sprayed out through the air blowing holes to clean the main components of the inclined plate, the liquid pump is started to locally suck up the turbid mud and water in the cleaning range to avoid affecting the quality of the effluent. The sucked mud and water is then injected into the liquid injection pipe through the liquid return pipe and flows back into the main body of the sedimentation tank for sedimentation. S5. When the movable frame moves back and forth, the isolation baffles are arranged at an angle under the action of the torsion spring. Therefore, when the air sprayed through the air blowing hole cleans the main component of the inclined plate, the isolation baffles on both sides of the movable frame can isolate the sludge settled at the bottom of the sedimentation tank, and prevent the sludge at the bottom of the sedimentation tank from being carried up when the main component of the inclined plate is rinsed. S6. When the movable frame moves, it simultaneously drives the positioning pin to move. The positioning pin cooperates with the motion trajectory groove to drive the vertical connecting plate to rise. This can block both sides of the liquid discharge tank and prevent the turbid mud water in the upper layer from entering the liquid discharge tank through the sawtooth weir during the cleaning of the main components of the inclined plate. This would cause the turbidity of the effluent to increase, affecting the stability of the subsequent sewage treatment process and increasing the load on the subsequent treatment process.

[0015] Beneficial effects: In this invention, the Roots blower injects air into the gas collection pipe through the gas injection pipe II. The air is discharged to the outside through the air blowing holes along with the gas injection pipe I and the gas cleaning pipe. The air blowing holes are arranged at an angle with the central axis of the gas cleaning pipe as the center. Thus, the air discharged from the air blowing holes can clean the main components of the inclined plate. No water level reduction or manual cleaning is required to achieve continuous flushing. In this invention, the drive motor drives the threaded rod to rotate, and the cooperation between the threaded rod and the threaded connecting sleeve drives the sliding sleeve and the gas collection pipe to rise and fall, thereby adjusting the height of the gas cleaning pipe. This prevents the sludge at the bottom of the sedimentation tank from being carried up when rinsing the inclined plate main body, and facilitates the continued sedimentation of the sewage at the bottom of the sedimentation tank. In this invention, when air is sprayed out of the air blowing hole to clean the main component of the inclined plate, the liquid pump is started to locally suck up the turbid mud and water in the cleaning range, so as to avoid the sewage after rinsing from mixing with the effluent after sedimentation, which would cause the effluent to become turbid and fail to meet the standards. In this invention, when the movable frame moves, it simultaneously drives the positioning pin to move. The positioning pin cooperates with the motion trajectory groove to drive the vertical connecting plate to rise, which can block both sides of the liquid discharge tank and prevent the muddy water in the upper layer from entering the liquid discharge tank through the sawtooth weir during the cleaning of the inclined plate main component, which would cause the turbidity of the effluent to increase, affecting the stability of the subsequent sewage treatment process and increasing the load on the subsequent treatment process. In this invention, the barrier sleeve is always placed on top of the inclined plate main component under the action of the limiting baffle. Therefore, the barrier sleeve can block the air blowing hole located above the inclined plate main component, preventing the air ejected from the air blowing hole above from stirring the sewage above, causing the turbidity of the effluent to increase, affecting the stability of the subsequent sewage treatment process, and increasing the load on the subsequent treatment process.

[0016] In this invention, the regulating structure avoids agitating the bottom sludge during rinsing, facilitating further sedimentation of the wastewater; the suction structure promptly removes turbid mud and water, preventing it from mixing with the settled effluent and causing it to fail to meet standards; the isolation baffle and the blocking sleeve respectively isolate the bottom sludge and block the air blowing holes above, reducing the turbidity of the effluent, ensuring the stability of subsequent treatment processes, and reducing the treatment load; the vertical connecting plates on both sides of the liquid discharge tank move with the movable frame, preventing turbid mud and water from entering, further improving the quality of the effluent. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of an inclined tube and inclined plate backwashing mechanism provided by the present invention; Figure 2 This is a three-dimensional cross-sectional view of a backwashing mechanism for inclined tubes and plates provided by the present invention. Figure 3 This is a three-dimensional structural diagram of a movable frame, transverse support rod, gas cleaning pipe, and liquid absorption plate of an inclined tube and inclined plate backwashing mechanism provided by the present invention. Figure 4 A three-dimensional exploded structural diagram of the transverse support rod, gas collection pipe and gas cleaning pipe of the water curtain baffle of the inclined tube and inclined plate backwashing mechanism provided by the present invention. Figure 5A three-dimensional exploded structural diagram of the threaded connecting sleeve, liquid absorption plate and sliding sleeve of the inclined tube and inclined plate backwashing mechanism provided by the present invention; Figure 6 A three-dimensional cross-sectional view of the gas cleaning pipe and liquid absorption plate of an inclined tube and inclined plate backflushing mechanism provided by the present invention. Figure 7 A three-dimensional exploded structural diagram of the liquid absorption plate and liquid collection pipe of an inclined tube and inclined plate backwashing mechanism provided by the present invention; Figure 8 This is a three-dimensional exploded view of the isolation baffle and torsion spring of the inclined tube and inclined plate backwashing mechanism provided by the present invention; Figure 9 A three-dimensional structural schematic diagram of a sedimentation tank provided by the present invention; Figure 10 A three-dimensional structural diagram of a movable frame, liquid discharge tank, and vertical connecting plate for a sedimentation tank provided by the present invention. Figure 11 This is a three-dimensional exploded structural diagram of the motion trajectory channel, positioning pin, and liquid discharge channel of a sedimentation tank provided by the present invention. Figure 12 This is a cross-sectional schematic diagram of the main components of a sedimentation tank provided by the present invention.

[0018] In the diagram: 1. Sedimentation tank main body; 2. Liquid injection pipe; 3. Inclined plate main component; 4. Movable frame; 5. Connecting lug; 6. Fixed support rod; 7. Threaded transmission rod; 8. Gas cleaning pipe; 9. Air blowing through hole; 10. Sliding guide rod; 11. Gas injection pipe I; 12. Exhaust throttling control valve; 13. Horizontal support rod; 14. Clearance groove; 15. Vertical support plate; 16. Gas collecting pipe; 17. Gas injection pipe II; 18. Sliding sleeve; 19. Threaded connecting sleeve; 20. Threaded rod; 21. 1. Drive motor; 22. Liquid absorption plate; 23. Liquid extraction hole; 24. Liquid collection pipe; 25. Through hole; 26. Liquid pump; 27. Liquid extraction pipe; 28. Liquid return pipe; 29. ​​Limiting baffle; 30. Barrier sleeve; 31. Foundation base plate; 32. Fixed rotating shaft; 33. Isolation baffle; 34. Torsion spring; 35. Liquid discharge trough; 36. Liquid discharge pipe; 37. Serrated weir; 38. Fixed mounting plate; 39. Positioning pin; 40. Vertical connecting plate; 41. Motion trajectory groove. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] In one embodiment: Refer to Figure 1 A backwashing mechanism with inclined tubes and plates mainly includes a sedimentation tank body 1, which is rectangular in shape and made of high-strength, corrosion-resistant materials, such as stainless steel or fiberglass, to ensure that it is not corroded by sewage during long-term use. A liquid injection pipe 2 is fixedly connected to one side of the sedimentation tank body 1. The diameter of the liquid injection pipe 2 is designed according to the treatment scale of the sedimentation tank and the sewage flow rate, and is used to inject sewage into the sedimentation tank body 1.

[0021] Reference Figure 1 and Figure 2 Multiple inclined plate main components 3 are fixed inside the sedimentation tank body 1. These components are made of materials such as polypropylene (PP) or polyvinyl chloride (PVC), offering advantages such as light weight, corrosion resistance, and a smooth surface. The inclination angle of the inclined plate main components 3 is typically between 50° and 60°, which facilitates sludge sliding and sedimentation. These multiple inclined plate main components 3 are located above the liquid injection pipe 2 to improve the sedimentation efficiency of wastewater within the sedimentation tank body 1.

[0022] Reference Figure 1 and Figure 3 A movable frame 4 is slidably installed inside the sedimentation tank body 1. The movable frame 4 is welded from rectangular steel plates and has sufficient strength and rigidity. Connecting lugs 5 are fixed on both sides of the movable frame 4. A threaded drive rod 7 is rotatably connected to the top of the sedimentation tank body 1 via a base. A fixed support rod 6 is fixedly connected to the top of the sedimentation tank body 1 via a base. One connecting lug 5 is threadedly connected to the threaded drive rod 7, and the other connecting lug 5 is slidably connected to the fixed support rod 6. By driving the threaded drive rod 7 to rotate, the movable frame 4 can be moved back and forth within the sedimentation tank body 1.

[0023] Reference Figure 3 , Figure 4 and Figure 6 The flushing structure is used to clean the inclined plate main body component 3 when the movable frame 4 moves. The flushing structure includes multiple gas cleaning pipes 8 that slide through the movable frame 4. The gas cleaning pipes 8 are made of stainless steel. The gas cleaning pipes 8 are arranged between two adjacent inclined plate main body components 3 and are parallel to the inclined plate main body components 3 to ensure that the surface of the inclined plate main body component 3 can be thoroughly cleaned. On one side of the gas cleaning pipe 8, there are multiple air blowing holes 9 for spraying air. The multiple air blowing holes 9 are arranged at an angle of 15°-30° with the axis of the gas cleaning pipe 8 as the center. This arrangement is conducive to discharging the cleaned mud and water on the inclined plate main body component 3 in a designated direction.

[0024] Reference Figure 3 , Figure 4 and Figure 6The flushing structure also includes multiple gas injection pipes I11, the bottom ends of which are fixedly extended into the gas cleaning pipes 8. A transverse support rod 13 is fixed to the top of the movable frame 4, and a gas collecting pipe 16 is located above the transverse support rod 13. The top ends of the multiple gas injection pipes I11 are fixedly extended into the gas collecting pipe 16. A gas injection pipe II17 is fixed to one end of the gas collecting pipe 16, and the gas injection pipe II17 is connected to the outlet of an external Roots blower. The airflow of the Roots blower is selected according to the number of gas cleaning pipes 8 and the size of the blowing holes 9, generally between 5-20 m³ / min, to provide the air source. A sliding guide rod 10 is fixed to the bottom end of each of the multiple gas cleaning pipes 8, and the bottom ends of the multiple sliding guide rods 10 slide through the movable frame 4. The sliding guide rods 10 serve to guide and stabilize the gas cleaning pipes 8. An exhaust throttling control valve 12 is provided on the gas injection pipe I11. The exhaust throttling control valve 12 is a manual or electric regulating valve used to adjust the amount of gas discharged from the air blowing hole 9. The gas volume is adjusted to a suitable range, generally between 0.5-5 m³ / min, according to the actual cleaning effect and sludge accumulation.

[0025] The Roots blower injects air into the gas collection pipe 16 through the gas injection pipe II 17. The air is then discharged to the outside through the air blowing hole 9 along with the gas injection pipe I 11 and the gas cleaning pipe 8, thereby cleaning the inclined plate main component 3.

[0026] Reference Figures 2-5 The adjustment structure is used to adjust the height of the gas cleaning pipe 8 to prevent the sludge settled at the bottom of the sedimentation tank body 1 from being stirred when air is injected through the air blowing hole 9. The adjustment structure includes multiple vertical support plates 15 fixed to both sides of the top of the movable frame 4, and a gas collecting pipe 16 slidably fits between two adjacent vertical support plates 15. A sliding sleeve 18 is slidably fitted on the outer wall of the gas collecting pipe 16, and a drive motor 21 is fixed inside the transverse support rod 13. The drive motor 21 is a servo motor, and its power is selected according to the weight of the gas collecting pipe 16 and the adjustment height. A threaded rod 20 is fixed to the output shaft of the drive motor 21, and a threaded connecting sleeve 19 is fixed to the bottom of the sliding sleeve 18, with the threaded rod 20 extending into the threaded connecting sleeve 19. Multiple clearance grooves 14 are provided inside the transverse support rod 13, and the gas injection pipe I 11 and the gas cleaning pipe 8 pass through the corresponding clearance grooves 14 to avoid interference with the transverse support rod 13.

[0027] The drive motor 21 drives the threaded rod 20 to rotate. The threaded rod 20, in conjunction with the threaded connecting sleeve 19, drives the sliding sleeve 18 and the gas collecting pipe 16 to rise and fall. As the gas collecting pipe 16 rises and falls, it drives the gas cleaning pipe 8 to slide within the movable frame 4 through the gas injection pipe I 11, thereby adjusting the height of the gas cleaning pipe 8. This prevents the sludge at the bottom of the sedimentation tank body 1 from being carried up when rinsing the inclined plate main component 3.

[0028] Reference Figure 2 and Figure 3 A liquid pump 26 is fixed on one side of the sedimentation tank body 1. The flow rate of the liquid pump 26 is selected according to the scale of the sedimentation tank and the amount of sludge and water to be pumped out, generally between 5-20 m³ / h, and the head is between 5-15 m. Multiple suction structures are provided within the movable frame 4 to cooperate with the liquid pump 26. When air is sprayed through the air vents 9 to clean the inclined plate body component 3, the sludge and water in a stirred state are pumped away. The suction structure includes multiple liquid absorption plates 22 fixed within the movable frame 4. The liquid absorption plates 22 are made of porous materials, such as plastic filter plates or metal filter screens, and have a large specific surface area, which is beneficial for absorbing sludge and water. The liquid absorption plates 22 are arranged between two adjacent inclined plate body components 3, corresponding to the gas cleaning pipe 8 and arranged parallel to the inclined plate body components 3.

[0029] Reference Figure 2 , Figure 3 , Figure 6 and Figure 7 The suction structure also includes a liquid collecting pipe 24, which is fixed to one side of multiple liquid absorption plates 22. Multiple through holes 25 are provided on one side of the liquid collecting pipe 24, which connects to the corresponding liquid absorption plates 22 through the through holes 25, for collecting the agitated mud and water into the liquid collecting pipe 24. A liquid extraction pipe 27 is fixed to the inlet end of the pump 26, one end of which is fixedly connected to the liquid collecting pipe 24. A liquid return pipe 28 is fixed to the outlet end of the pump 26, and the liquid return pipe 28 is fixedly connected to the liquid injection pipe 2, for pumping out the agitated mud and water and re-injecting it into the sedimentation tank body 1 for sedimentation.

[0030] Reference Figure 3 and Figure 8 When air is sprayed out of the air blowing hole 9 to clean the inclined plate main component 3, the liquid pump 26 is started to locally suck up the turbid mud and water in the cleaning range to avoid affecting the quality of the effluent. The sucked mud and water is injected into the liquid injection pipe 2 through the liquid return pipe 28 and then flows back into the sedimentation tank main body 1 for sedimentation.

[0031] Two base plates 31 are fixed at the bottom of both sides of the movable frame 4. The two base plates 31 on the same side are rotatably connected by the same fixed rotating shaft 32. An isolation baffle 33 is fixed to the outer wall of the fixed rotating shaft 32. Two torsion springs 34, made of stainless steel, are sleeved on the outer wall of the fixed rotating shaft 32. The two ends of the torsion springs 34 are fixedly connected to the isolation baffle 33 and the base plate 31 on the side closest to each other by springs.

[0032] As the movable frame 4 reciprocates, the isolation baffles 33 are arranged at an angle between 30° and 60° under the action of the torsion spring 34. Therefore, when the air sprayed through the air vent 9 cleans the inclined plate main body component 3, the isolation baffles 33 on both sides of the movable frame 4 can isolate the sludge settled at the bottom of the sedimentation tank main body 1, preventing the sludge at the bottom of the sedimentation tank main body 1 from being carried up when rinsing the inclined plate main body component 3.

[0033] Reference Figure 4 and Figure 6 It also includes multiple blocking sleeves 30, which are slidably fitted onto the outer wall of the corresponding gas cleaning pipe 8 to block the air blowing holes 9 located above the inclined plate main body component 3. Each of the multiple blocking sleeves 30 has a limit baffle 29 fixed to its bottom, and the limit baffle 29 is located at the top of the corresponding inclined plate main body component 3. All sliding contact parts are lubricated (e.g., coated with sewage-resistant grease) to reduce movement resistance.

[0034] During the lifting and lowering process of the gas cleaning pipe 8, the blocking sleeve 30 is always placed on the top of the inclined plate main component 3 under the action of the limiting baffle 29. Therefore, the blocking sleeve 30 can block the air blowing hole 9 located above the inclined plate main component 3, preventing the air ejected from the air blowing hole 9 above from stirring the sewage above, causing the turbidity of the effluent to increase, affecting the stability of the subsequent sewage treatment process, and increasing the load on the subsequent treatment process.

[0035] Reference Figures 9-11 A sedimentation tank, relating to the field of wastewater treatment technology, includes the aforementioned inclined tube and inclined plate backwashing mechanism, and further includes a liquid discharge trough 35 fixed within the sedimentation tank body 1. The liquid discharge trough 35 is made of stainless steel or fiberglass and is cuboid in shape. A liquid discharge pipe 36 extending to one side of the sedimentation tank body 1 is fixed to one end of the liquid discharge trough 35 for discharging the settled water from the upper layer within the sedimentation tank body 1. Both sides of the liquid discharge trough 35 are provided with serrated weirs 37 to facilitate the introduction of settled water into the liquid discharge trough 35.

[0036] In another embodiment: Refer to Figures 9-11The structure of this embodiment is basically the same as that of the previous embodiment, except that: vertical connecting plates 40 are slidably connected to both sides of the liquid discharge tank 35, and the vertical connecting plates 40 are made of plastic or metal. Both ends of the vertical connecting plates 40 are slidably connected to the inner walls of the corresponding sedimentation tank body 1 on both sides. The two vertical connecting plates 40 are provided with motion trajectory grooves 41 on the side away from each other. The shape of the motion trajectory grooves 41 is oblique, and the inclination angle is adapted to the moving direction of the movable frame 4 and the lifting relationship of the vertical connecting plates 40. Positioning pins 39 are slidably provided in both motion trajectory grooves 41. One positioning pin 39 is fixedly connected to the inner wall of one side of the movable frame 4, and one end of the other positioning pin 39 is fixed with a fixing mounting plate 38. The fixing mounting plate 38 is fixed to the top inner wall of the movable frame 4 and is used to drive the vertical connecting plates 40 to rise and fall when the movable frame 4 moves, thereby controlling whether the water in the sedimentation tank body 1 enters the liquid discharge tank 35.

[0037] When the movable frame 4 moves, it simultaneously drives the positioning pin 39 to move. The positioning pin 39 cooperates with the motion trajectory groove 41 to drive the vertical connecting plate 40 to rise. This can block both sides of the liquid discharge tank 35, preventing the turbid mud water in the upper layer from entering the liquid discharge tank 35 through the sawtooth weir 37 during the cleaning of the inclined plate main component 3. This would cause the turbidity of the effluent to increase, affecting the stability of the subsequent sewage treatment process and increasing the load on the subsequent treatment process.

[0038] like Figure 12 As shown, when it is necessary to clean the residual sediment on the inclined plate main component 3 online, the threaded transmission rod 7 is driven to rotate by the motor. The threaded transmission rod 7 and the connecting lug 5 drive the movable frame 4 to move back and forth in the sedimentation tank main component 1. The Roots blower injects air into the gas collection pipe 16 through the gas injection pipe II 17. The air is discharged to the outside through the air blowing hole 9 along with the gas injection pipe I 11 and the gas cleaning pipe 8. The air blowing hole 9 is arranged at an angle with the central axis of the gas cleaning pipe 8 as the center, so the air discharged from the air blowing hole 9 can clean the inclined plate main component 3 online.

[0039] A method of using a sedimentation tank includes the following steps: S1. Wastewater is injected into the sedimentation tank body 1 through the liquid injection pipe 2. The wastewater settles in the sedimentation tank body 1. The particulate suspended matter in the wastewater settles on the inclined plate body component 3. As the amount of sediment on the inclined plate body component 3 increases, the sediment slides down the inclined surface of the inclined plate body component 3 under the action of gravity and collects at the bottom of the sedimentation tank body 1. When it is necessary to clean the sediment remaining on the inclined plate body component 3, the threaded transmission rod 7 is driven by the motor to rotate. The cooperation between the threaded transmission rod 7 and the connecting lug 5 drives the movable frame 4 to move back and forth in the sedimentation tank body 1. S2. The Roots blower injects air into the gas collection pipe 16 through the gas injection pipe II 17. The air is discharged to the outside through the air blowing hole 9 along with the gas injection pipe I 11 and the gas cleaning pipe 8. The air blowing hole 9 is arranged at an angle with the central axis of the gas cleaning pipe 8 as the center, so that the air discharged from the air blowing hole 9 can clean the inclined plate main component 3. S3. Since the thickness of the sludge layer at the bottom of the sedimentation tank body 1 varies, in order to avoid the bottom sludge being carried up during flushing, the height of the gas cleaning pipe 8 is adjusted according to the thickness of the sludge layer at the bottom of the sedimentation tank body 1. The drive motor 21 drives the threaded rod 20 to rotate. The threaded rod 20 and the threaded connecting sleeve 19 cooperate to drive the sliding sleeve 18 and the gas collecting pipe 16 to rise and fall. While the gas collecting pipe 16 rises and falls, it drives the gas cleaning pipe 8 to slide within the movable frame 4 through the gas injection pipe I 11, thereby adjusting the height of the gas cleaning pipe 8. This prevents the sludge at the bottom of the sedimentation tank body 1 from being carried up when flushing the inclined plate body component 3. In addition, during the rising and falling of the gas cleaning pipe 8, the blocking sleeve 30 is always placed on the top of the inclined plate body component 3 under the action of the limiting baffle 29. Therefore, the blocking sleeve 30 can block the air blowing hole 9 located above the inclined plate body component 3, preventing the air ejected from the air blowing hole 9 above from stirring the sewage above, causing the turbidity of the effluent to increase, affecting the stability of the subsequent sewage treatment process, and increasing the load on the subsequent treatment process. S4. To further prevent the sewage above from being stirred, multiple liquid absorption plates 22 are installed in the movable frame 4. When air is sprayed out from the air blowing hole 9 to clean the inclined plate main component 3, the liquid pump 26 is started to locally suck up the turbid mud and water in the cleaning range to avoid affecting the quality of the effluent. The sucked mud and water is injected into the liquid injection pipe 2 through the liquid return pipe 28 and then flows back into the sedimentation tank main body 1 for sedimentation. S5. When the movable frame 4 moves back and forth, the isolation baffles 33 are arranged at an angle under the action of the torsion spring 34. Therefore, when the air sprayed through the air vent 9 cleans the inclined plate main body component 3, the isolation baffles 33 on both sides of the movable frame 4 can isolate the sludge settled at the bottom of the sedimentation tank main body 1, and prevent the sludge at the bottom of the sedimentation tank main body 1 from being carried up when the inclined plate main body component 3 is rinsed. S6. When the movable frame 4 moves, it simultaneously drives the positioning pin 39 to move. The positioning pin 39 cooperates with the motion trajectory groove 41 to drive the vertical connecting plate 40 to rise. This can block both sides of the liquid discharge tank 35, preventing the turbid mud water in the upper layer from entering the liquid discharge tank 35 through the sawtooth weir 37 during the cleaning of the inclined plate main component 3. This would cause the turbidity of the effluent to increase, affecting the stability of the subsequent sewage treatment process and increasing the load on the subsequent treatment process.

[0040] However, as is well known to those skilled in the art, the working principles and wiring methods of the liquid pump 26 and the drive motor 21 are conventional means or common knowledge, and will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0041] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0042] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A backwashing mechanism for inclined tubes and plates, characterized in that, include: The sedimentation tank body (1) has a liquid injection pipe (2) fixedly connected and connected to one side for injecting sewage into the sedimentation tank body (1). Multiple inclined plate main body components (3) located above the liquid injection pipe (2) are fixed inside the sedimentation tank body (1). The movable frame (4) is slidably disposed within the main body (1) of the sedimentation tank; The flushing structure includes multiple gas cleaning pipes (8) that slide through the movable frame (4). The gas cleaning pipes (8) are arranged between two adjacent inclined plate main body members (3) and are parallel to the inclined plate main body members (3). A plurality of air blowing holes (9) for spraying air are provided on one side of the gas cleaning pipes (8). The suction structure includes multiple liquid absorption plates (22) fixed within the movable frame (4). The liquid absorption plates (22) are disposed between two adjacent inclined plate main components (3) and correspond to the gas cleaning pipe (8).

2. The inclined tube and inclined plate backwashing mechanism according to claim 1, characterized in that, The flushing structure also includes a gas collection pipe (16) and multiple gas injection pipes I (11). The top ends of the multiple gas injection pipes I (11) are fixedly connected to and extend into the gas collection pipe (16), and their bottom ends are fixedly connected to and extend into the corresponding gas cleaning pipes (8). One end of the gas collection pipe (16) is fixedly connected to a gas injection pipe II (17) for communication with an external gas source. The air blowing holes (9) are arranged at an angle with the axis of the gas cleaning pipe (8) as the center, so that the discharged air can clean the inclined plate main component (3).

3. The inclined tube and inclined plate backwashing mechanism according to claim 2, characterized in that, It also includes an adjustment structure, which includes a drive motor (21), a threaded rod (20) driven by the drive motor (21), and a sliding sleeve (18) slidably sleeved on the outer wall of the gas collecting pipe (16). A threaded connecting sleeve (19) is fixed at the bottom of the sliding sleeve (18), and the threaded rod (20) is threadedly connected to the threaded connecting sleeve (19).

4. The inclined tube and inclined plate backwashing mechanism according to claim 3, characterized in that, The suction structure also includes a liquid collection pipe (24) and a liquid pump (26). The liquid collection pipe (24) is fixed to one side of a plurality of liquid absorption plates (22) and connected to the corresponding liquid absorption plate (22) through a through hole (25). The liquid pump (26) is fixed to one side of the sedimentation tank body (1). The inlet end of the liquid pump (26) is connected to the liquid collection pipe (24) through a liquid extraction pipe (27), and its outlet end is connected to the liquid injection pipe (2) through a liquid return pipe (28).

5. The inclined tube and inclined plate backwashing mechanism according to claim 4, characterized in that, Both sides of the movable frame (4) are hinged with isolation baffles (33), which are kept in an inclined position by torsion springs (34).

6. The inclined tube and inclined plate backwashing mechanism according to claim 5, characterized in that, It also includes multiple barrier sleeves (30), which are slidably sleeved on the outer wall of the corresponding gas cleaning pipe (8), and each of them has a limit baffle (29) fixed at its bottom. The limit baffle (29) overlaps the top of the corresponding inclined plate main component (3).

7. The inclined tube and inclined plate backwashing mechanism according to claim 6, characterized in that, The top of the sedimentation tank body (1) is rotatably connected to a threaded transmission rod (7) and fixed to a fixed support rod (6). Both sides of the movable frame (4) are fixed with connecting lugs (5). One of the connecting lugs (5) is threadedly connected to the threaded transmission rod (7), and the other connecting lug (5) is slidably connected to the fixed support rod (6).

8. A sedimentation tank, comprising the inclined tube and inclined plate backwashing mechanism as described in claim 7, characterized in that, It also includes a liquid discharge trough (35) fixed in the main body (1) of the sedimentation tank. One end of the liquid discharge trough (35) is fixedly connected to a liquid discharge pipe (36), and both sides are provided with sawtooth weirs (37) for introducing the supernatant after sedimentation into the liquid discharge trough (35).

9. A sedimentation tank according to claim 8, characterized in that, Both sides of the liquid discharge tank (35) are slidably connected to vertical connecting plates (40). The two vertical connecting plates (40) are provided with motion trajectory grooves (41) on the side away from each other. The two motion trajectory grooves (41) are slidably provided with positioning pins (39). The two positioning pins (39) are fixed on the movable frame (4).

10. A method of using a sedimentation tank, applied to the sedimentation tank of claim 9, characterized in that, Includes the following steps: S1. Sewage is injected into the sedimentation tank body (1) through the liquid injection pipe (2) for sedimentation. The sediment slides down to the bottom on the inclined plate body component (3). When cleaning is required, the motor is started to drive the threaded transmission rod (7) to rotate, which drives the movable frame (4) to move back and forth in the sedimentation tank body (1). S2. Air is injected into the gas collection pipe (16) through the gas injection pipe II (17) by the Roots blower. The air is discharged from the blowing hole (9) through the gas injection pipe I (11) and the gas cleaning pipe (8). The blowing hole (9) is arranged at an angle with the central axis of the gas cleaning pipe (8) as the center to clean the main component (3) of the inclined plate. S3. Drive the threaded rod (20) to rotate by the drive motor (21). The threaded rod (20) and the threaded connecting sleeve (19) cooperate to drive the sliding sleeve (18) and the gas collection pipe (16) to rise and fall, thereby adjusting the height of the gas cleaning pipe (8) and avoiding the stirring up of bottom sludge. At the same time, the blocking sleeve (30) blocks the air blowing hole (9) above the gas cleaning pipe (8) under the action of the limiting baffle (29). S4. Set up a liquid absorption plate (22) in the movable frame (4). When the air blowing hole (9) sprays out air for cleaning, start the liquid pump (26) to suck up the turbid mud water in the cleaning range, and inject the mud water into the liquid injection pipe (2) through the liquid return pipe (28) for return sedimentation. S5. When the movable frame (4) moves back and forth, the isolation baffle (33) is arranged at an angle under the action of the torsion spring (34) to isolate the sludge at the bottom of the sedimentation tank body (1). S6. When the movable frame (4) moves, the positioning pin (39) cooperates with the motion trajectory groove (41) to drive the vertical connecting plate (40) to rise, blocking the two sides of the liquid discharge groove (35).

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