Mud scraper for wastewater treatment

Abstract

The utility model discloses a sludge scraper for wastewater treatment, which comprises a sedimentation tank, a fixed plate fixedly connected above the sedimentation tank, a driving motor mounted above the fixed plate, a rotating rod arranged below the fixed plate, a mixing paddle fixedly connected to the side surface of the rotating rod, a first bottom scraping plate fixedly connected to the bottom of the side surface of the rotating rod, and a second bottom scraping plate fixedly connected to the bottom of the side surface of the first bottom scraping plate. The other end of the bottom of the side face of the rotating rod is fixedly connected with a second scraping bottom plate, and multiple sets of mud crushing cones are fixedly connected to the lower portion of the second scraping bottom plate. According to the utility model, the mud scraping and mixing functions are integrated in the same equipment. The mixing paddles fixedly connected to the side surface of the rotating rod are divided into two groups which are positioned at the upper end of the outer side and two groups which are positioned at the lower end of the outer side, so that when the rotating rod rotates, wastewater at different height layers in the sedimentation tank can be fully stirred and mixed, the coagulation and sedimentation of impurities in the wastewater are effectively promoted, and good conditions are provided for subsequent sludge scraping operation.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically a sludge scraper for wastewater treatment. Background Technology

[0002] Wastewater treatment refers to the process of treating wastewater using physical, chemical, and biological methods to remove or reduce pollutants, enabling it to meet discharge or reuse standards. Physical treatment methods mainly utilize physical processes to separate suspended solids in wastewater, such as sedimentation, filtration, and centrifugation. Chemical treatment methods use chemical reactions to remove or transform pollutants in wastewater, commonly including neutralization, oxidation-reduction, coagulation, and adsorption. Biological treatment methods utilize the metabolic activity of microorganisms to decompose organic pollutants in wastewater into harmless substances, including aerobic and anaerobic biological treatment. Wastewater treatment generally includes multiple stages such as pretreatment, primary treatment, secondary treatment, and advanced treatment. Pretreatment mainly removes large particulate matter and floating matter, primary treatment mainly removes suspended solids and some organic matter, secondary treatment mainly removes dissolved organic matter, and advanced treatment further removes residual pollutants to meet higher water quality requirements. Treated wastewater can be discharged into natural water bodies or reused in industrial production, urban miscellaneous uses, etc., realizing the recycling of water resources and reducing environmental pollution.

[0003] A search revealed Chinese patent publication number CN221358669U, which discloses a sludge scraper for wastewater treatment. This scraper, using a combination of a fixed column, chute, slider, threaded rod, and a first motor, achieves adjustable scraper height and controls the amount of sludge scraped per stroke, reducing damage to the second motor and extending its lifespan. However, it only includes a scraper for scraping the inner wall of the sedimentation tank, lacking a scraper for scraping the bottom. Furthermore, currently available sludge scrapers have significant limitations, their internal structure only accommodating a single-function mechanism. Existing sludge scrapers either require a sludge scraping mechanism or a mixing mechanism, making it impossible to achieve parallel operation of sludge scraping and mixing functions. This design flaw means that in practical applications, sludge scrapers cannot simultaneously meet the needs of efficiently scraping bottom sludge and effectively mixing water or sludge. When faced with complex tasks such as simultaneously handling sludge accumulation, water quality homogenization, and chemical mixing, existing sludge scrapers are inadequate, severely limiting the continuity and efficiency of the wastewater treatment process. This not only increases equipment purchase costs but also occupies more installation space and becomes more complicated in terms of operation and maintenance. Utility Model Content

[0004] The purpose of this utility model is to address the problem that existing sludge scrapers, when simultaneously handling complex tasks such as sludge accumulation, water quality homogenization, and chemical mixing, not only increase equipment purchase costs but also occupy more installation space and become more complicated in terms of operation and maintenance. This utility model aims to provide a sludge scraper for wastewater treatment.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sludge scraper for wastewater treatment, comprising: a sedimentation tank, a fixed plate fixedly connected above the sedimentation tank, a drive motor installed above the fixed plate, a rotating rod provided below the fixed plate, a mixing paddle fixedly connected to the side of the rotating rod, a first scraping plate fixedly connected to the bottom of the side of the rotating rod, a second scraping plate fixedly connected to the other end of the bottom of the side of the rotating rod, and multiple sets of sludge-crushing cones fixedly connected below the second scraping plate.

[0006] As a further embodiment of this utility model: the rotating rod is hollow inside, and a lead screw is installed in the hollow part of the rotating rod. The lead screw is driven by a servo motor inside the rotating rod. A sliding block is threaded onto the outside of the lead screw. A fixing frame is fixedly connected to the side of the sliding block. An inner wall scraper is fixedly connected to the side of the fixing frame.

[0007] As a further improvement of this utility model: the bottom of the sedimentation tank is fixedly connected to a support leg, and an anti-slip pad is fixedly connected below the support leg. The number of support legs and anti-slip pads are both arranged in four sets, symmetrically arranged around the four ends of the bottom of the sedimentation tank.

[0008] As a further improvement of this utility model: the sedimentation tank has a sludge discharge port inside, and the sludge discharge port penetrates the interior and bottom of the sedimentation tank.

[0009] As a further embodiment of this utility model: the drive motor is connected to the rotating rod, and the number of mixing paddles is set to four sets, with two sets of mixing paddles located at the upper outer side of the rotating rod, and the other two sets of mixing paddles located at the lower outer side of the rotating rod.

[0010] As a further improvement of this utility model: two sets of the first scraping plate and the second scraping plate are provided, and they are arranged in a cross-shaped staggered manner at the lower outer end of the rotating rod.

[0011] As a further improvement of this utility model, two sets of the fixing frame and the inner wall scraper are provided, symmetrically arranged on both sides of the sliding block.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention integrates sludge scraping and mixing functions within a single device. The mixing paddles, fixed to the side of the rotating rod, are divided into two groups located at the upper outer end and two groups at the lower outer end. When the rotating rod rotates, they thoroughly stir and mix wastewater at different depths within the sedimentation tank, effectively promoting the coagulation and sedimentation of impurities and providing favorable conditions for subsequent sludge scraping operations. Simultaneously, the first and second scraping plates, fixed to the bottom of the rotating rod side, are arranged in two sets each in a symmetrical, cross-shaped configuration. This allows for the comprehensive and efficient scraping of sludge deposited at the bottom of the sedimentation tank. Furthermore, the sludge-breaking cone below the second scraping plate can break up stubborn and clump-like sludge, significantly improving scraping efficiency and effectiveness. This truly achieves parallel operation of sludge scraping and mixing functions, enhancing the continuity and efficiency of the wastewater treatment process. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the sedimentation tank in this utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the sedimentation tank in this utility model;

[0017] Figure 4 This is a bottom view of the internal structure of the sedimentation tank in this utility model.

[0018] In the diagram: 1. Sedimentation tank; 2. Fixed plate; 3. Drive motor; 4. Rotating rod; 5. Mixing paddle; 6. First scraper plate; 7. Second scraper plate; 8. Sludge cone; 9. Lifting trough; 10. Lead screw; 11. Sliding block; 12. Fixed frame; 13. Inner wall scraper; 14. Support leg; 15. Anti-slip pad; 16. Sludge discharge port. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will be described below based on its overall structure.

[0021] Reference Figures 1 to 4 In this embodiment of the invention, a sludge scraper for wastewater treatment includes: a sedimentation tank 1, which provides a spatial foundation for wastewater treatment and sludge sedimentation. A fixing plate 2 is fixedly connected above the sedimentation tank 1, which serves to securely install other components. A drive motor 3 is installed above the fixing plate 2, and the drive motor 3 starts to operate when the sludge scraper is started to treat wastewater. A rotating rod 4 is provided below the fixing plate 2, and the drive motor 3 is connected to the rotating rod 4, so the drive motor 3 drives the rotating rod 4 to rotate.

[0022] A mixing paddle 5 is fixedly attached to the side of the rotating rod 4. Four sets of mixing paddles 5 are provided, with two sets located at the upper outer end of the rotating rod 4 and the other two sets located at the lower outer end. As the rotating rod 4 rotates, these mixing paddles 5 also rotate, effectively mixing and agitating wastewater at different depths within the sedimentation tank 1. This promotes the coagulation and sedimentation of impurities in the wastewater, improving the sedimentation effect.

[0023] A first scraper plate 6 is fixedly connected to the bottom side of the rotating rod 4, and a second scraper plate 7 is fixedly connected to the other end of the bottom side of the rotating rod 4. Two sets of both the first and second scraper plates 6 are provided, and they are arranged in a cross-shaped, staggered pattern at the lower outer side of the rotating rod 4. When the rotating rod 4 rotates, the first and second scraper plates 6 and 7 also rotate together. This design ensures that the sludge deposited at the bottom of the sedimentation tank 1 can be thoroughly and efficiently scraped away during rotation. Simultaneously, multiple sets of sludge-breaking cones 8 are fixedly connected below the second scraper plate 7. During the scraping process, the sludge-breaking cones 8 can break up more stubborn and clump-like sludge, facilitating subsequent sludge discharge.

[0024] The rotating rod 4 is hollow inside, and a lead screw 10 is installed in the hollow part of the rotating rod 4. The lead screw 10 is driven by a servo motor inside the rotating rod 4. When the lead screw 10 rotates under the drive of the servo motor inside the rotating rod 4, the sliding block 11 is threaded onto the outer side of the lead screw 10. The rotation of the lead screw 10 causes the sliding block 11 to move vertically up and down along the lead screw 10. A fixing frame 12 is fixed to the side of the sliding block 11, and an inner wall scraper 13 is fixed to the side of the fixing frame 12. There are two sets of fixing frames 12 and inner wall scrapers 13, which are symmetrically arranged on both sides of the sliding block 11. Therefore, when the sliding block 11 moves up and down, it will drive the inner wall scraper 13 to perform up and down scraping operation on the inner wall of the sedimentation tank 1, effectively cleaning the sludge attached to the inner wall.

[0025] The bottom of the sedimentation tank 1 is fixedly connected to a support leg 14, and an anti-slip pad 15 is fixedly connected below the support leg 14. There are four sets of both the support leg 14 and the anti-slip pad 15, which are symmetrically arranged around the four ends of the bottom of the sedimentation tank 1. During the entire operation of the sludge scraper, they provide stable support for the entire scraper, and the anti-slip pad 15 can also prevent the scraper from sliding or shifting during operation.

[0026] The sedimentation tank 1 has a sludge discharge port 16 inside, which extends through the interior and bottom of the sedimentation tank 1. The scraped and crushed sludge will collect at the bottom of the sedimentation tank 1 and then be discharged from the sedimentation tank 1 through the sludge discharge port 16, thus completing the sludge scraping operation in the wastewater treatment process.

[0027] The working principle of this utility model is as follows: Workers need to check each component of the sludge scraper against the equipment list to ensure that the sedimentation tank 1 is free of cracks and holes, the fixed plate 2 is securely connected to the sedimentation tank 1, and that the drive motor 3, rotating rod 4, mixing paddle 5, first scraper bottom plate 6, second scraper bottom plate 7, sludge crushing cone 8, lead screw 10, sliding block 11, fixed frame 12, inner wall scraper 13, and other components are undamaged and undeformed. Simultaneously, check whether the support legs 14 are secure, whether the anti-slip pads 15 are intact, and whether the sludge discharge port 16 is unobstructed; check whether the power connection of the servo motor inside the drive motor 3 and rotating rod 4 is correct and secure, check the insulation performance of the motor, and ensure that the electrical system has no safety hazards such as leakage or short circuits; add an appropriate amount of lubricating oil to parts requiring lubrication, such as the lead screw 10, to ensure smooth operation of the equipment. After confirming that the equipment is ready, the workers start the drive motor 3 above the fixed plate 2. The drive motor 3 starts running, driving the rotating rod 4 below the fixed plate 2 to rotate via the connecting device. Simultaneously, the servo motor inside the rotating rod 4 is activated, driving the lead screw 10 to rotate. As the rotating rod 4 rotates, the mixing paddle 5 fixed to its side also rotates. Since the mixing paddle 5 is set in four sets, with two sets located at the upper outer end of the rotating rod 4 and the other two sets at the lower outer end, it can thoroughly mix wastewater at different heights within the sedimentation tank 1. During the mixing process, impurities in the wastewater gradually coagulate, creating favorable conditions for subsequent sedimentation. As the rotating rod 4 rotates, the first scraper plate 6 and the second scraper plate 7 fixed to its bottom side rotate together. There are two sets of each of the first and second scraper plates 6, arranged in a cross-shaped staggered pattern at the lower outer end of the rotating rod 4, which can comprehensively and efficiently scrape away the sludge deposited at the bottom of the sedimentation tank 1. At the same time, the sludge-breaking cone 8 below the second scraper plate 7 breaks up stubborn, clump-like sludge, making it loose and easier to discharge. When the lead screw 10 rotates, the sliding block 11, which is threaded on the outer side, moves vertically up and down along the lead screw 10. The fixed frame 12, which is fixed to the side of the sliding block 11, and the inner wall scraper 13, which is fixed to the side of the fixed frame 12, also move up and down accordingly. Since there are two sets of fixed frames 12 and two sets of inner wall scrapers 13, symmetrically arranged on both sides of the sliding block 11, the inner wall scrapers 13 can perform a comprehensive vertical scraping operation on the inner wall of the sedimentation tank 1, cleaning the sludge adhering to the inner wall. The scraped and broken sludge collects at the bottom of the sedimentation tank 1 and is discharged through the sludge discharge port 16 opened inside the sedimentation tank 1. During the sludge discharge process, the operator can control the discharge speed according to the actual situation to ensure smooth sludge discharge. During the operation of the sludge scraper, the operator should closely monitor the operating sound, temperature, and other parameters of the drive motor 3 and the servo motor to ensure normal motor operation. Meanwhile, observe the operation of components such as rotating rod 4, mixing paddle 5, first scraper plate 6, second scraper plate 7, and inner wall scraper 13. If there are abnormal vibrations or jamming, stop the machine in time for inspection. Monitor the sludge discharge situation of discharge port 16 in real time, observe the amount and concentration of discharged sludge, and judge the sludge scraping effect.If sludge removal is obstructed or abnormalities occur, promptly investigate the cause and take appropriate action. After wastewater treatment and sludge scraping operations are completed, first turn off the drive motor 3 above the fixed plate 2, stop the rotation of the rotating rod 4, and the mixing paddle 5, the first scraper plate 6, and the second scraper plate 7 will stop working accordingly; turn off the servo motor inside the rotating rod 4, the lead screw 10 will stop rotating, and the sliding block 11 and the inner wall scraper 13 will stop moving; after shutdown, clean the sludge scraper, removing sludge and debris from the equipment surface to keep the equipment clean. Regularly inspect all components of the sludge scraper, including the wear condition of the components and the tightness of the connections, and replace severely worn components in a timely manner; according to the equipment maintenance manual, regularly add lubricating oil to parts requiring lubrication, such as the lead screw 10, to ensure normal operation of the equipment; regularly check the insulation performance and grounding of the electrical system to ensure the safety and reliability of the electrical system.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sludge scraper for wastewater treatment, characterized in that, include: A sedimentation tank (1) is fixedly connected to a fixed plate (2) above the sedimentation tank (1). A drive motor (3) is installed above the fixed plate (2). A rotating rod (4) is provided below the fixed plate (2). A mixing paddle (5) is fixedly connected to the side of the rotating rod (4). A first scraper plate (6) is fixedly connected to the bottom of the side of the rotating rod (4). A second scraper plate (7) is fixedly connected to the other end of the bottom of the side of the rotating rod (4). Multiple sets of mud-breaking cones (8) are fixedly connected below the second scraper plate (7). The rotating rod (4) is hollow inside, and a lead screw (10) is installed in the hollow part of the rotating rod (4). The lead screw (10) is driven by a servo motor inside the rotating rod (4). A sliding block (11) is threaded on the outside of the lead screw (10). A fixing frame (12) is fixed to the side of the sliding block (11). An inner wall scraper (13) is fixed to the side of the fixing frame (12).

2. The mud scraper for wastewater treatment according to claim 1, characterized by The sedimentation tank (1) is fixedly connected to the bottom of a support leg (14), and an anti-slip pad (15) is fixedly connected below the support leg (14). There are four sets of both the support leg (14) and the anti-slip pad (15), which are symmetrically arranged around the four ends of the bottom of the sedimentation tank (1).

3. The mud scraper for wastewater treatment according to claim 1, characterized by The sedimentation tank (1) has a sludge discharge port (16) inside, and the sludge discharge port (16) penetrates the interior and bottom of the sedimentation tank (1).

4. The mud scraper for wastewater treatment according to claim 1, characterized by The drive motor (3) is connected to the rotating rod (4). There are four sets of mixing paddles (5), with two sets of mixing paddles (5) located on the upper outer side of the rotating rod (4) and the other two sets of mixing paddles (5) located on the lower outer side of the rotating rod (4).

5. The mud scraper for wastewater treatment according to claim 1, characterized by The first scraper plate (6) and the second scraper plate (7) are each provided in two sets, and are arranged in a cross-shaped staggered manner at the lower outer side of the rotating rod (4).

6. The mud scraper for wastewater treatment according to claim 1, characterized by The number of fixed brackets (12) and inner wall scrapers (13) are both provided in two sets, which are symmetrically arranged on both sides of the sliding block (11).

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