Novel sludge hopper capable of being used for secondary sedimentation tank

Abstract

The utility model belongs to the technical field of secondary sedimentation tanks, in particular to a novel sludge hopper for a secondary sedimentation tank, which is characterized in that a sludge discharge port is arranged at the bottom of a secondary sedimentation tank body, a sludge discharge pipeline corresponding to the sludge discharge port is arranged at the bottom of the secondary sedimentation tank body, a plurality of first sludge discharge holes are arranged at the bottom of the sludge discharge pipeline, and the inner side wall of the sludge discharge pipeline is connected with an adjusting plate in a sliding manner; the adjusting plate is provided with a second sludge discharge hole corresponding to the first sludge discharge hole, the adjusting plate is driven by a power device, the secondary sedimentation tank body is provided with a sludge scraping assembly, and the device has the beneficial effects of accurate sludge discharge control, efficient sludge scraping, good adaptability and the like.

Description

Technical Field

[0001] This utility model belongs to the field of secondary sedimentation tank technology, specifically a new type of sludge hopper that can be used in secondary sedimentation tanks. Background Technology

[0002] In the wastewater treatment process, the secondary sedimentation tank is a crucial link. Its main function is to clarify the mixed liquor, separate and concentrate the activated sludge, and the sludge hopper in the secondary sedimentation tank is responsible for collecting and discharging the settled sludge.

[0003] Traditional secondary sedimentation tank sludge hoppers have many problems during use. On the one hand, the sludge discharge structure design is not reasonable enough, and the sludge discharge pipes are prone to blockage, resulting in poor sludge discharge and affecting sewage treatment efficiency. For example, the size and distribution of the sludge discharge holes are unreasonable and cannot meet the discharge requirements of sludge of different properties, and sludge is prone to accumulate in the pipes.

[0004] On the other hand, the performance of the sludge scraping components needs to be improved. Traditional sludge scraping devices are difficult to fit well against the bottom and side walls of the secondary sedimentation tank, resulting in poor sludge scraping effect, excessive sludge residue, and the need for frequent cleaning and maintenance.

[0005] In addition, existing sludge hoppers are inadequate in terms of automated control and ease of maintenance, making it difficult to achieve precise control of sludge discharge and real-time monitoring of equipment operating status, which is not conducive to the efficient and stable operation of the wastewater treatment system. Utility Model Content

[0006] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a novel sludge hopper that can be used in secondary sedimentation tanks. On the one hand, it solves the problems of unreasonable sludge discharge structure design and easy blockage of sludge discharge pipes, which leads to poor sludge discharge and affects sewage treatment efficiency. On the other hand, the performance of the sludge scraping component needs to be improved. Traditional sludge scraping devices are difficult to fit well against the bottom and side walls of the secondary sedimentation tank, resulting in poor sludge scraping effect, more sludge residue, and the need for frequent cleaning and maintenance.

[0007] The present invention adopts the following solution: a novel sludge hopper that can be used in a secondary sedimentation tank, comprising a secondary sedimentation tank body, characterized in that the bottom of the secondary sedimentation tank body is provided with a sludge discharge port, the bottom of the secondary sedimentation tank body is provided with a sludge discharge pipe corresponding to the sludge discharge port, the bottom of the sludge discharge pipe is provided with a plurality of first sludge discharge holes, and an adjusting plate is slidably connected to the inner side wall, the adjusting plate is provided with a second sludge discharge hole corresponding to the first sludge discharge hole, the adjusting plate is driven by a power device, and a sludge scraping assembly is provided on the secondary sedimentation tank body.

[0008] Preferably, the power unit includes a first telescopic rod on the sludge discharge pipe, the extended end of the first telescopic rod being connected to an adjusting plate, and the sludge discharge pipe being provided with a protective housing corresponding to the first telescopic rod.

[0009] Preferably, the sludge scraping assembly includes an installation platform disposed at the bottom of the secondary sedimentation tank. A waterproof box is provided on the installation platform, and a rotating platform is rotatably connected to the waterproof box. An electric motor is provided inside the waterproof box, and the rotating platform is driven by the electric motor. A connecting plate is provided on the rotating platform, and a plurality of second telescopic rods are provided at the bottom of the connecting plate. The protruding ends of the plurality of second telescopic rods are connected to scrapers that cooperate with the bottom of the secondary sedimentation tank.

[0010] Preferably, an mounting plate is slidably connected to the connecting plate, a return spring is provided between the mounting plate and the connecting plate, and an auxiliary roller corresponding to the side wall of the secondary sedimentation tank is rotatably connected to the mounting plate.

[0011] Preferably, the scraper has a multi-sectioned, zigzag structure.

[0012] Preferably, the rotating platform is equipped with a maintenance platform.

[0013] Preferably, a liquid level sensor is installed inside the waterproof tank.

[0014] Preferably, the connecting plate is made of a high-strength, lightweight alloy material.

[0015] Preferably, the telescopic end of the second telescopic rod is provided with a buffer rubber pad.

[0016] Beneficial effects:

[0017] I. Precise Sludge Discharge Control: This novel design incorporates several first sludge discharge holes at the bottom of the sludge discharge pipe, along with corresponding second sludge discharge holes on an adjusting plate slidably connected to them. Driven by a power unit, the adjusting plate allows for precise adjustment of the first telescopic rod based on actual sludge concentration and deposition levels, thereby altering the correspondence between the first and second sludge discharge holes. When sludge concentration is high and deposition is significant, the two rows of holes can be perfectly aligned, increasing the sludge discharge volume. Conversely, when sludge volume is low, the holes can be staggered to reduce the discharge volume. This precise control effectively avoids resource waste caused by excessive sludge discharge and sludge accumulation problems due to insufficient discharge, as seen in traditional sludge discharge methods, significantly improving the stability and efficiency of wastewater treatment.

[0018] Second, the protective shell installed on the sludge discharge pipe provides reliable protection for the first telescopic rod. This protective shell not only prevents sludge and other debris from corroding the first telescopic rod and avoiding damage due to external factors, but also reduces the interference of the external environment on the operation of the telescopic rod. At the same time, the sound-absorbing material filled inside the protective shell can effectively reduce the noise generated by the first telescopic rod during operation, improve the working environment of the equipment, and reduce the impact on the surrounding environment. In addition, the displacement sensor equipped on the first telescopic rod can monitor the movement position of the adjustment plate in real time and feed the data back to the control system, thereby realizing precise control of the movement of the adjustment plate and further improving the accuracy of sludge discharge control.

[0019] Third, the design of the sludge scraping component fully considers the actual conditions of the secondary sedimentation tank, and has efficient sludge scraping and good adaptability. The scraper is composed of multiple zigzag structures connected end to end. This unique shape can better fit the shape of the bottom of the secondary sedimentation tank, increasing the sludge scraping area. Compared with traditional flat scrapers, the zigzag scrapers can more effectively gather sludge and push it towards the sludge discharge port during the sludge scraping process, reducing sludge residue. At the same time, the included angle between adjacent zigzag structures can be adjusted according to the slope of the bottom of the secondary sedimentation tank, further optimizing the sludge scraping effect. It is suitable for secondary sedimentation tanks of different specifications and shapes.

[0020] IV. The operational stability of the sludge scraping assembly stems from its rational structural design. The heat dissipation device inside the waterproof tank can promptly dissipate the heat generated by the motor during operation, preventing damage due to overheating and extending the motor's service life. The reduction mechanism between the motor and the rotating table can adjust the rotation speed of the rotating table according to actual needs, allowing the scraper to perform sludge scraping operations at an appropriate speed, thus improving scraping efficiency. In addition, the second telescopic rod adopts a hydraulic telescopic rod, which can provide stable and adjustable telescopic force, ensuring that the scraper and the bottom of the secondary sedimentation tank always maintain a good fit. The buffer rubber pad at the telescopic end of the second telescopic rod can prevent rigid collision between the scraper and the bottom of the secondary sedimentation tank, reducing wear on the scraper and the bottom of the secondary sedimentation tank and extending the service life of the equipment.

[0021] V. The mounting plate, return spring, and auxiliary roller, which are slidably connected on the connecting plate, form an effective sidewall auxiliary sludge scraping structure. The auxiliary roller is rotatably connected to the mounting plate and connected to the connecting plate through the return spring. It can adaptively conform to the sidewall of the secondary sedimentation tank. During the sludge scraping process, the auxiliary roller rotates with the rotation of the rotating table to scrape off the sludge on the sidewall of the secondary sedimentation tank, reducing the adhesion of sludge on the sidewall. At the same time, the elastic coefficient of the return spring can be adjusted according to actual needs to adapt to the contact pressure requirements between the auxiliary roller and the sidewall of the secondary sedimentation tank under different working conditions, ensuring the stability of the auxiliary sludge scraping effect. The self-lubricating coating on the surface of the auxiliary roller further reduces the friction during rotation, reduces energy loss, and improves the operating efficiency of the equipment. Attached Figure Description

[0022] Figure 1 This is one of the perspective views of this utility model.

[0023] Figure 2 This is the second perspective view of this utility model.

[0024] Figure 3 yes Figure 2 A magnified view of part A.

[0025] Figure 4 This is one of the perspective views of the three-dimensional sectional view of this utility model.

[0026] Figure 5 This is the second perspective of the three-dimensional sectional view of this utility model.

[0027] Figure 6 This is the third perspective of the three-dimensional sectional view of this utility model.

[0028] Reference numerals in the attached drawings: 1. Secondary sedimentation tank body; 2. Sludge discharge port; 3. Sludge discharge pipe; 4. First sludge discharge hole; 5. Adjusting plate; 6. Second sludge discharge hole; 7. First telescopic rod; 8. Protective shell; 9. Mounting platform; 10. Waterproof tank; 11. Rotating platform; 12. Motor; 13. Connecting plate; 14. Second telescopic rod; 15. Scraper; 16. Mounting plate; 17. Return spring; 18. Auxiliary roller; 19. Maintenance platform. Detailed Implementation

[0029] The foregoing and other technical contents, features and effects of this utility model are described in conjunction with the appendix below. Figure 1-6 The detailed description of the embodiments will clearly demonstrate this. All structural details mentioned in the following embodiments are based on the accompanying drawings.

[0030] Exemplary embodiments of the present invention will now be described with reference to the accompanying drawings.

[0031] Example 1: A novel sludge hopper for use in secondary sedimentation tanks, comprising a secondary sedimentation tank body 1, characterized in that the bottom of the secondary sedimentation tank body 1 is provided with a sludge discharge port 2, the bottom of the secondary sedimentation tank body 1 is provided with a sludge discharge pipe 3 corresponding to the sludge discharge port 2, the bottom of the sludge discharge pipe 3 is provided with a plurality of first sludge discharge holes 4, and an adjusting plate 5 is slidably connected to the inner side wall, the adjusting plate 5 is provided with a second sludge discharge hole 6 corresponding to the first sludge discharge holes 4, the adjusting plate 5 is driven by a power device, and a sludge scraping assembly is provided on the secondary sedimentation tank body 1.

[0032] As an optional embodiment of Example 1, the power unit includes a first telescopic rod 7 provided on the sludge discharge pipe 3, the extended end of the first telescopic rod 7 being connected to the adjusting plate 5, and a protective shell 8 corresponding to the first telescopic rod 7 being provided on the sludge discharge pipe 3.

[0033] As an optional embodiment of Example 1, the bottom of the secondary sedimentation tank 1 is cone-shaped to facilitate the flow of sludge into the sludge discharge port 2 for discharge.

[0034] In use, this embodiment constructs a sludge discharge system for a novel sludge hopper that can be used in a secondary sedimentation tank. The system mainly consists of a secondary sedimentation tank body 1, a sludge discharge port 2, a sludge discharge pipe 3, an regulating plate 5, and a power unit.

[0035] Secondary sedimentation tank and sludge discharge port: The secondary sedimentation tank 1 is the main place for sludge to settle in sewage treatment. It is equipped with a sludge discharge port 2 at the bottom to discharge the settled sludge from the secondary sedimentation tank.

[0036] Sludge discharge pipe: The sludge discharge pipe 3 is installed at the bottom of the secondary sedimentation tank 1 and connected to the sludge discharge port 2. Several first sludge discharge holes 4 are evenly distributed at the bottom of the sludge discharge pipe 3, which form the channel for sludge to be discharged from the sludge discharge pipe 3.

[0037] Adjusting plate: The inner wall of the sludge discharge pipe 3 is slidably connected to the adjusting plate 5. The adjusting plate 5 is provided with a second sludge discharge hole 6 corresponding to the first sludge discharge hole 4. By adjusting the position of the adjusting plate 5, the corresponding state of the first sludge discharge hole 4 and the second sludge discharge hole 6 can be changed, thereby controlling the amount of sludge discharged.

[0038] Power unit: The power unit is provided by a first telescopic rod 7 installed on the sludge discharge pipe 3, the extended end of which is connected to the adjusting plate 5. During the extension and retraction of the first telescopic rod 7, the adjusting plate 5 slides accordingly on the inner wall of the sludge discharge pipe 3. To ensure the normal operation of the first telescopic rod 7, the sludge discharge pipe 3 is equipped with a protective housing 8 that matches the first telescopic rod 7. The protective housing 8 has a detachable structure, is filled with sound-absorbing material, and is equipped with a displacement sensor to monitor the movement position of the adjusting plate 5 in real time.

[0039] Example 2, based on Example 1, provides a novel sludge scraping assembly for a secondary sedimentation tank. The assembly includes a mounting platform 9 at the bottom of the secondary sedimentation tank body 1, a waterproof box 10 on the mounting platform 9, a rotating platform 11 rotatably connected to the waterproof box 10, a motor 12 inside the waterproof box 10, the rotating platform 11 driven by the motor 12, a connecting plate 13 on the rotating platform 11, and several second telescopic rods 14 at the bottom of the connecting plate 13. The extended ends of the several second telescopic rods 14 are connected to scrapers 15 that cooperate with the bottom of the secondary sedimentation tank.

[0040] As an optional embodiment of Example 1, an mounting plate 16 is slidably connected to the connecting plate 13, a return spring 17 is provided between the mounting plate 16 and the connecting plate 13, and an auxiliary roller 18 corresponding to the side wall of the secondary sedimentation tank 1 is rotatably connected to the mounting plate 16.

[0041] As an optional embodiment of Example 1, the scraper 15 is in the shape of multiple zigzag structures with their ends connected.

[0042] As an optional embodiment of Example 1, the rotating table 11 is provided with a maintenance platform 19.

[0043] As an optional embodiment of Example 1, a liquid level sensor is provided inside the waterproof tank 10.

[0044] As an optional embodiment of Example 1, the connecting plate 13 is made of a high-strength lightweight alloy material.

[0045] As an optional embodiment of Example 1, the telescopic end of the second telescopic rod 14 is provided with a buffer rubber pad.

[0046] Based on Example 1, this example constructs a new type of sludge hopper scraping assembly, which includes components such as mounting platform 9, waterproof box 10, rotating platform 11, motor 12, connecting plate 13, second telescopic rod 14, scraper 15, etc.

[0047] Mounting platform and waterproof tank: A mounting platform 9 is set at the bottom of the secondary sedimentation tank 1, and a waterproof tank 10 is installed on the mounting platform 9. The waterproof tank 10 adopts a sealed design and is equipped with a liquid level sensor and a humidity sensor inside. It is also equipped with a heat dissipation device, which can monitor the environmental parameters inside the tank in real time and make timely adjustments to provide a stable operating environment for the motor 12.

[0048] Rotating platform and motor: A rotating platform 11 is rotatably connected to the waterproof tank 10. The motor 12 inside the waterproof tank 10 is connected to the rotating platform 11 through a reduction mechanism to provide power to the rotating platform 11. The motor 12 adopts frequency conversion speed regulation technology, which can adjust the rotation speed of the rotating platform 11 according to the sludge deposition in the secondary sedimentation tank.

[0049] Connecting plate and second telescopic rod: A connecting plate 13 is installed on the rotating table 11. The connecting plate 13 is made of high-strength lightweight alloy material. Several second telescopic rods 14 are installed at the bottom. The second telescopic rods 14 are hydraulic telescopic rods. Buffer rubber pads are provided at their telescopic ends to prevent the scraper 15 from rigidly colliding with the bottom of the secondary sedimentation tank.

[0050] Scraper: The extended end of the second telescopic rod 14 is connected to a scraper 15. The scraper 15 is composed of multiple zigzag structures connected end to end. The included angle between adjacent zigzag structures can be adjusted according to the slope of the bottom of the secondary sedimentation tank to better fit the bottom of the secondary sedimentation tank and improve the sludge scraping effect.

[0051] Auxiliary roller: A mounting plate 16 is slidably connected to the connecting plate 13. A reset spring 17 is provided between the mounting plate 16 and the connecting plate 13. An auxiliary roller 18 corresponding to the side wall of the secondary sedimentation tank 1 is rotatably connected to the mounting plate 16. The surface of the auxiliary roller 18 is coated with a self-lubricating coating to reduce friction during rotation.

[0052] Maintenance platform: A maintenance platform 19 is set on the rotating table 11. The maintenance platform 19 is equipped with anti-slip texture and guardrails, as well as lighting and a foldable ladder, to facilitate the maintenance and repair of the mud scraping components by the staff.

[0053] Specific work process

[0054] Sludge Discharge Process: When the sludge in the secondary sedimentation tank settles to a certain extent, sludge discharge is required. First, based on the sludge concentration and sedimentation, the control system sends a command to the power unit. The first telescopic rod 7 extends and retracts, causing the adjusting plate 5 to slide along the inner wall of the sludge discharge pipe 3. This ensures that the first sludge discharge hole 4 and the second sludge discharge hole 6 are properly aligned. For example, when the sludge concentration is high and there is a lot of sediment, the first telescopic rod 7 pushes the adjusting plate 5 to make the first sludge discharge hole 4 and the second sludge discharge hole 6 completely aligned, increasing the sludge discharge volume. When there is less sludge, the first telescopic rod 7 pulls the adjusting plate 5 to partially offset the two discharge holes, reducing the sludge discharge volume. During the sludge discharge process, the displacement sensor monitors the movement position of the adjusting plate 5 in real time and feeds the data back to the control system to ensure precise control of the sludge discharge volume. Simultaneously, the nano-level superhydrophobic coating on the inner wall of the sludge discharge pipe 3 and the guide cone structure at the sludge discharge port 2 ensure smooth sludge discharge and reduce the risk of pipe blockage.

[0055] Sludge scraping process: The sludge scraping assembly starts working under the drive of the motor 12. The motor 12 drives the rotating table 11 to rotate through the reduction mechanism. The connecting plate 13 on the rotating table 11 rotates accordingly, which in turn drives the scraper 15 and the auxiliary roller 18 to rotate around the center of the secondary sedimentation tank 1. The second telescopic rod 14 automatically adjusts the extension length according to the thickness of the sludge accumulation at the bottom of the secondary sedimentation tank, so that the scraper 15 is always in close contact with the bottom of the secondary sedimentation tank. The zigzag structure of the scraper 15 can gather the sludge and push it towards the sludge discharge port 2 during the rotation. At the same time, the auxiliary roller 18 adaptively fits the side wall of the secondary sedimentation tank 1 under the action of the return spring 17 to scrape the sludge on the side wall. During the sludge scraping process, the liquid level sensor and humidity sensor in the waterproof tank 10 monitor the environmental parameters inside the tank in real time. When water accumulation or abnormal humidity occurs, the ventilation or dehumidification device is automatically activated to ensure the safe operation of the motor 12. The variable frequency speed regulation function of the motor 12 can adjust the rotation speed of the rotating table 11 according to the sludge deposition, thereby improving the sludge scraping efficiency.

[0056] Maintenance and repair process: When equipment maintenance and repair are required, workers can climb onto the maintenance platform 19 via a foldable ladder. The lighting on the maintenance platform 19 provides good illumination for maintenance work, and the anti-slip texture and guardrails ensure the safety of workers. For the sludge removal system, the protective housing 8 can be opened to inspect and maintain the first telescopic rod 7; for the sludge scraping assembly, components such as the motor 12, the second telescopic rod 14, and the scraper 15 can be inspected and replaced. If a fault occurs in the waterproof tank 10, targeted measures can be taken based on the data fed back by the liquid level sensor and the humidity sensor.

[0057] The above description is only for illustrating the present utility model. It should be understood that the present utility model is not limited to the above embodiments, and various modifications that conform to the concept of the present utility model are within the protection scope of the present utility model.

Claims

1. A novel sludge hopper for use in secondary sedimentation tanks, comprising a secondary sedimentation tank body (1), characterized in that, The bottom of the secondary sedimentation tank (1) is provided with a sludge discharge port (2), and the bottom of the secondary sedimentation tank (1) is provided with a sludge discharge pipe (3) corresponding to the sludge discharge port (2). The bottom of the sludge discharge pipe (3) is provided with a plurality of first sludge discharge holes (4), and an adjusting plate (5) is slidably connected to the inner side wall. The adjusting plate (5) is provided with a second sludge discharge hole (6) corresponding to the first sludge discharge hole (4). The adjusting plate (5) is driven by a power device, and the secondary sedimentation tank (1) is provided with a sludge scraping assembly.

2. The novel sludge hopper for use in secondary sedimentation tanks according to claim 1, characterized in that, The power unit includes a first telescopic rod (7) installed on the sludge discharge pipe (3), the extended end of the first telescopic rod (7) is connected to the adjusting plate (5), and the sludge discharge pipe (3) is provided with a protective shell (8) corresponding to the first telescopic rod (7).

3. The novel sludge hopper for use in secondary sedimentation tanks according to claim 1, characterized in that, The sludge scraping assembly includes an installation platform (9) set at the bottom of the secondary sedimentation tank (1), a waterproof box (10) is provided on the installation platform (9), a rotating platform (11) is rotatably connected to the waterproof box (10), an electric motor (12) is provided inside the waterproof box (10), the rotating platform (11) is driven by the electric motor (12), a connecting plate (13) is provided on the rotating platform (11), a plurality of second telescopic rods (14) are provided at the bottom of the connecting plate (13), and the protruding ends of the plurality of second telescopic rods (14) are connected to scrapers (15) that cooperate with the bottom of the secondary sedimentation tank.

4. A novel sludge hopper for use in secondary sedimentation tanks according to claim 3, characterized in that, A mounting plate (16) is slidably connected to the connecting plate (13), and a reset spring (17) is provided between the mounting plate (16) and the connecting plate (13). An auxiliary roller (18) corresponding to the side wall of the secondary sedimentation tank (1) is rotatably connected to the mounting plate (16).

5. A novel sludge hopper for use in secondary sedimentation tanks according to claim 3, characterized in that, The scraper (15) is shaped as a series of zigzag structures connected end to end.

6. A novel sludge hopper for use in secondary sedimentation tanks according to claim 3, characterized in that, The rotating table (11) is equipped with a maintenance platform (19).

7. A novel sludge hopper for use in secondary sedimentation tanks according to any one of claims 3-6, characterized in that, The waterproof box (10) is equipped with a liquid level sensor and a humidity sensor.

8. A novel sludge hopper for use in secondary sedimentation tanks according to any one of claims 3-6, characterized in that, The connecting plate (13) is made of high-strength lightweight alloy material.

9. A novel sludge hopper for use in secondary sedimentation tanks according to any one of claims 3-6, characterized in that, The telescopic end of the second telescopic rod (14) is provided with a buffer rubber pad.

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