A device for scraping sludge from the bottom of a sedimentation tank

Abstract

The utility model provides a kind of sedimentation tank bottom mud scraping plate device, it is related to sewage treatment technical field, including sedimentation tank ontology, the bottom end fixed connection of sedimentation tank ontology collects mud hopper, the lower surface fixed communication of collecting mud hopper discharges mud pipe, the upper surface of sedimentation tank ontology is fixedly installed horizontal plate symmetrically, the side surface sliding connection of horizontal plate moves plate, the lower surface fixed installation of mobile plate vertical plate, the bottom end of vertical plate is provided with mud scraping bottom plate, the inside sliding connection of horizontal plate is toothed plate.The utility model in the present application, by waterproof motor drive broken rod rotation, drive surface equidistant distribution broken blade rotation, can effectively crush the agglomerated sludge of sedimentation tank bottom, reduce the resistance when mud scraping bottom plate moves, avoid the situation that mud scraping device appears to be stuck, while the lower surface of mud scraping bottom plate and sedimentation tank ontology bottom close adhesion, can push the sludge after crushing to collecting mud hopper smoothly, guarantee the smooth and efficient of mud scraping operation.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a sludge scraper device at the bottom of a sedimentation tank. Background Technology

[0002] With the rapid development of the water treatment industry, sedimentation tanks, as key structures in wastewater treatment systems, directly affect the effluent quality and system stability through their operational efficiency. In actual operation, suspended solids in wastewater settle into sludge at the bottom of the tank after gravity settling. If this sludge is not removed in a timely and thorough manner, it will not only reduce the effective sedimentation volume but may also cause problems such as anaerobic sludge floating and water quality deterioration. Therefore, an efficient and reliable bottom sludge scraping device is crucial for ensuring the long-term stable operation of sedimentation tanks.

[0003] In existing technologies, the structural design of traditional bottom scraper devices in sedimentation tanks is relatively simple. Most of them rely solely on the reciprocating movement of the scraper to remove sludge, lacking a targeted sludge crushing mechanism. As sludge settles in the sedimentation tank for a long time, it is easy to coagulate into large sludge blocks with high hardness under the action of gravity. These sludge blocks will significantly increase the propulsion resistance when the scraper moves, often causing the scraper to jam and run poorly. In severe cases, it can also cause overload damage to the drive mechanism, affecting the continuity of the entire scraping process, thus requiring improvement. Utility Model Content

[0004] This utility model mainly provides a sludge scraper device at the bottom of a sedimentation tank, which solves the technical problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a sludge scraper device for the bottom of a sedimentation tank, comprising a sedimentation tank body, a sludge collection hopper fixedly connected to the bottom end of the sedimentation tank body, a sludge discharge pipe fixedly connected to the lower surface of the sludge collection hopper, horizontal plates symmetrically fixedly installed on the upper surface of the sedimentation tank body, a movable plate slidably connected to the side of the horizontal plates, a vertical plate fixedly installed on the lower surface of the movable plate, a sludge scraper base plate provided at the bottom end of the vertical plate, a toothed plate slidably connected inside the horizontal plates, a connecting block fixedly connected to the side of the toothed plates, a rotating shaft rotatably connected inside the horizontal plates, a gear fixedly installed on the surface of the rotating shaft, a drive motor fixedly installed on the lower surface of the horizontal plates, a guide rod fixedly installed inside the horizontal plates, a hydraulic cylinder fixedly installed on the surface of the movable plate, an installation plate fixedly connected to the output end of the hydraulic cylinder, a limiting rod fixedly connected to the surface of the installation plate, a crushing rod rotatably connected inside the installation plate, crushing blades fixedly installed on the surface of the crushing rod, and a waterproof motor fixedly installed on the side of the installation plate.

[0006] Preferably, the side of the connecting block is fixedly connected to the side of the moving plate, the output end of the drive motor is fixedly connected to one end of the rotating shaft, and the gear and the toothed plate mesh and drive each other. The drive motor drives the rotating shaft and the gear to rotate, so that the toothed plate moves horizontally inside the horizontal plate, thereby pushing the moving plate and the sludge scraper plate below it to reciprocate along the bottom of the sedimentation tank, so as to realize the continuous scraping of sludge.

[0007] Preferably, the connecting block and the guide rod are slidably connected. The guide rod limits and guides the movement trajectory of the connecting block and the moving plate, ensuring smooth and unbiased movement during the sludge scraping process, thereby improving the reliability and structural stability of the sludge scraping operation.

[0008] Preferably, the output end of the waterproof motor is fixedly connected to one end of the crushing rod, and the crushing blades are evenly distributed along the length of the crushing rod. The waterproof motor drives the crushing rod to rotate at high speed, which drives the crushing blades to uniformly cut and crush the sludge lumps at the bottom of the sedimentation tank, decomposing large lumps into small sludge particles. This significantly reduces the pushing resistance of the sludge scraper bottom plate, avoids device jamming, and ensures smooth sludge discharge.

[0009] Preferably, the limiting rod is slidably connected to the moving plate, and two sets of limiting rods are provided and symmetrically distributed on both sides of the mounting plate. The lower surface of the sludge scraper bottom plate is in contact with the bottom of the sedimentation tank body. The lifting trajectory of the mounting plate is guided by the two sets of symmetrical limiting rods to ensure that the hydraulic cylinder drives the mounting plate to move up and down smoothly without deviation.

[0010] Preferably, an installation sleeve is fixedly installed on the side of the movable plate, and a telescopic rod is slidably connected inside the installation sleeve. One end of the telescopic rod is fixedly connected to a sludge scraping side plate, and the other end of the telescopic rod is fixedly connected to a limiting block. A tension spring is fixedly connected to the inside of the installation sleeve. The tension spring applies a pre-tightening force to the telescopic rod, so that the sludge scraping side plate can elastically fit against the inner wall of the sedimentation tank body, thus avoiding damage to the tank body due to rigid contact while scraping off the sludge attached to the side wall.

[0011] Preferably, one end of the tension spring is fixedly connected to the side of the limiting block, and the scraping surface of the sludge scraping side plate is in contact with the inner side of the sedimentation tank body. Through the buffering effect of the tension spring, the sludge scraping side plate can automatically retract and reset when it encounters a protruding or uneven area of ​​the tank wall, which not only ensures the sludge scraping effect, but also improves the safety and durability of the device operation.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, the crushing rod is driven to rotate by a waterproof motor, which in turn drives the crushing blades that are evenly distributed on the surface to rotate. This can effectively crush the clumps of sludge at the bottom of the sedimentation tank, reduce the resistance when the scraper plate moves, and prevent the scraper device from getting stuck. At the same time, the lower surface of the scraper plate is in close contact with the bottom of the sedimentation tank body, which can smoothly push the crushed sludge to the sludge collection hopper, ensuring smooth and efficient scraping operation.

[0013] 2. In this utility model, a tension spring applies a continuous thrust to the limiting block, which drives the telescopic rod to push the sludge scraping side plate, so that the scraping surface of the sludge scraping side plate is always in close contact with the inner side of the sedimentation tank body. Together with the sludge scraping bottom plate, it realizes all-round sludge scraping of the tank bottom and tank wall, eliminating sludge residue. Attached Figure Description

[0014] Figure 1 A perspective view of a sludge scraper device at the bottom of a sedimentation tank is provided for this utility model; Figure 2 A side sectional view of a sludge scraper device at the bottom of a sedimentation tank is provided for this utility model. Figure 3 This utility model provides a partial structural diagram of the mounting plate, limiting rod, crushing rod, crushing blade, and waterproof motor of a bottom scraper device for a sedimentation tank. Figure 4 This utility model provides a top sectional view of a sludge scraper device at the bottom of a sedimentation tank.

[0015] Legend: 1. Sedimentation tank body; 2. Sludge hopper; 3. Sludge discharge pipe; 4. Horizontal plate; 5. Moving plate; 6. Vertical plate; 7. Sludge scraper bottom plate; 8. Toothed plate; 9. Connecting block; 10. Rotating shaft; 11. Gear; 12. Drive motor; 13. Guide rod; 14. Hydraulic cylinder; 15. Mounting plate; 16. Limiting rod; 17. Crushing rod; 18. Crushing blade; 19. Waterproof motor; 20. Mounting sleeve; 21. Telescopic rod; 22. Sludge scraper side plate; 23. Limiting block; 24. Tension spring. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0018] Please see Figures 1-4This utility model provides a technical solution: a sludge scraper device at the bottom of a sedimentation tank, including a sedimentation tank body 1, a sludge collection hopper 2 fixedly connected to the bottom end of the sedimentation tank body 1, a sludge discharge pipe 3 fixedly connected to the lower surface of the sludge collection hopper 2, a horizontal plate 4 symmetrically fixedly installed on the upper surface of the sedimentation tank body 1, a movable plate 5 slidably connected to the side of the horizontal plate 4, a vertical plate 6 fixedly installed on the lower surface of the movable plate 5, a sludge scraper bottom plate 7 provided at the bottom end of the vertical plate 6, a toothed plate 8 slidably connected inside the horizontal plate 4, a connecting block 9 fixedly connected to the side of the toothed plate 8, a rotating shaft 10 rotatably connected inside the horizontal plate 4, a gear 11 fixedly installed on the surface of the rotating shaft 10, a drive motor 12 fixedly installed on the lower surface of the horizontal plate 4, a guide rod 13 fixedly installed inside the horizontal plate 4, a hydraulic cylinder 14 fixedly installed on the surface of the movable plate 5, an installation plate 15 fixedly connected to the output end of the hydraulic cylinder 14, a limit rod 16 fixedly connected to the surface of the installation plate 15, a crushing rod 17 rotatably connected inside the installation plate 15, a crushing blade 18 fixedly installed on the surface of the crushing rod 17, and a waterproof motor 19 fixedly installed on the side of the installation plate 15.

[0019] like Figure 2 As shown, the side of the connecting block 9 is fixedly connected to the side of the moving plate 5, the output end of the drive motor 12 is fixedly connected to one end of the rotating shaft 10, and the gear 11 meshes with the toothed plate 8 for transmission. The drive motor 12 drives the rotating shaft 10 and the gear 11 to rotate, causing the toothed plate 8 to move horizontally inside the horizontal plate 4, thereby pushing the moving plate 5 and the sludge scraping bottom plate 7 below it to reciprocate along the bottom of the sedimentation tank, so as to realize the continuous scraping of sludge.

[0020] like Figure 3 As shown, the connecting block 9 and the guide rod 13 are slidably connected. The guide rod 13 limits and guides the movement trajectory of the connecting block 9 and the moving plate 5, ensuring smooth and non-skewed movement during the sludge scraping process, and improving the reliability and structural stability of the sludge scraping operation.

[0021] like Figure 2 As shown, the output end of the waterproof motor 19 is fixedly connected to one end of the crushing rod 17. The crushing blades 18 are evenly distributed along the length of the crushing rod 17. The waterproof motor 19 drives the crushing rod 17 to rotate at high speed, which drives the crushing blades 18 to uniformly cut and crush the sludge lumps at the bottom of the sedimentation tank, decomposing large lumps into small sludge particles. This significantly reduces the pushing resistance of the scraper bottom plate 7, avoids device jamming, and ensures smooth sludge discharge.

[0022] like Figure 2 As shown, the limiting rod 16 is slidably connected to the moving plate 5. Two sets of limiting rods 16 are provided and symmetrically distributed on both sides of the mounting plate 15. The lower surface of the sludge scraper bottom plate 7 is in contact with the bottom of the sedimentation tank body 1. The lifting trajectory of the mounting plate 15 is guided by the two sets of symmetrical limiting rods 16 to ensure that the hydraulic cylinder 14 drives the mounting plate 15 to move up and down smoothly without deviation.

[0023] like Figure 4 As shown, a mounting sleeve 20 is fixedly installed on the side of the movable plate 5. A telescopic rod 21 is slidably connected inside the mounting sleeve 20. One end of the telescopic rod 21 is fixedly connected to a sludge scraping side plate 22, and the other end of the telescopic rod 21 is fixedly connected to a limiting block 23. A tension spring 24 is fixedly connected to the inside of the mounting sleeve 20. The tension spring 24 applies a pre-tightening force to the telescopic rod 21, so that the sludge scraping side plate 22 can elastically fit against the inner wall of the sedimentation tank body 1. While scraping off the sludge attached to the side wall, it avoids damage to the tank body due to rigid contact.

[0024] like Figure 4 As shown, one end of the tension spring 24 is fixedly connected to the side of the limiting block 23, and the scraping surface of the sludge scraping side plate 22 is in contact with the inner side of the sedimentation tank body 1. Through the buffering effect of the tension spring 24, the sludge scraping side plate 22 can automatically retract and reset when it encounters a protruding or uneven area of ​​the tank wall, which not only ensures the sludge scraping effect, but also improves the safety and durability of the device operation.

[0025] The operating method and working principle of this device are as follows: First, drive motor 12 to rotate shaft 10. Gear 11 on shaft 10 meshes with toothed plate 8 inside horizontal plate 4, thus pushing connecting block 9 on side of toothed plate 8 to slide smoothly along guide rod 13 inside horizontal plate 4. Connecting block 9 drives moving plate 5 to move horizontally along side of horizontal plate 4. Moving plate 5 drives scraper bottom plate 7 to move synchronously via vertical plate 6. Simultaneously, hydraulic cylinder 14 is activated, driving mounting plate 15 to move up and down. Limiting rods 16 on both sides of mounting plate 15 slide with moving plate 5, guiding the lifting trajectory of mounting plate 15, adjusting crushing rod 17 and crushing blade 18 below mounting plate 15 to a suitable height close to the sludge layer. Then, waterproof motor 19 is activated, driving crushing rod 17 to rotate at high speed. The surface of crushing rod 17 is equidistantly divided... The cloth-shaped crushing blade 18 uniformly cuts and crushes the sludge lumps that have solidified at the bottom of the sedimentation tank. While the crushing operation is in progress, the moving plate 5 continuously drives the scraper plate 7 to reciprocate along the bottom of the sedimentation tank, pushing the crushed small sludge particles towards the sludge collection hopper 2. At the same time, the scraper side plate 22 on the side of the moving plate 5, under the continuous pushing force of the tension spring 24 on the limiting block 23, is kept in close contact with the inner wall of the sedimentation tank body 1 through the telescopic rod 21. It moves synchronously with the moving plate 5 to scrape off the sludge attached to the tank wall. If the scraper side plate 22 encounters a protrusion or uneven area of ​​the tank wall, the tension spring 24 will undergo elastic deformation, causing the telescopic rod 21 to retract. After passing the uneven area, it will automatically reset, ensuring that the tank body is not damaged during the scraping process. Finally, the sludge at the bottom and on the tank wall is scraped into the sludge collection hopper 2 and then discharged through the sludge discharge pipe 3 connected to the lower surface of the sludge collection hopper 2, completing the entire scraping operation.

[0026] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A sludge scraper device for the bottom of a sedimentation tank, characterized in that, include: A sedimentation tank body (1) is provided, with a sludge collection hopper (2) fixedly connected to the bottom end of the sedimentation tank body (1). A sludge discharge pipe (3) is fixedly connected to the lower surface of the sludge collection hopper (2). A horizontal plate (4) is symmetrically fixedly installed on the upper surface of the sedimentation tank body (1). A moving plate (5) is slidably connected to the side of the horizontal plate (4). A vertical plate (6) is fixedly installed on the lower surface of the moving plate (5). A sludge scraping bottom plate (7) is provided at the bottom end of the vertical plate (6). A toothed plate (8) is slidably connected inside the horizontal plate (4). A connecting block (9) is fixedly connected to the side of the toothed plate (8). A rotating shaft (10) is rotatably connected inside the horizontal plate (4). A gear (11) is fixedly installed on the surface of the shaft (10), a drive motor (12) is fixedly installed on the lower surface of the horizontal plate (4), a guide rod (13) is fixedly installed inside the horizontal plate (4), a hydraulic cylinder (14) is fixedly installed on the surface of the moving plate (5), a mounting plate (15) is fixedly connected to the output end of the hydraulic cylinder (14), a limit rod (16) is fixedly connected to the surface of the mounting plate (15), a crushing rod (17) is rotatably connected inside the mounting plate (15), a crushing blade (18) is fixedly installed on the surface of the crushing rod (17), and a waterproof motor (19) is fixedly installed on the side of the mounting plate (15).

2. The sedimentation tank bottom scraper device according to claim 1, characterized in that: The side of the connecting block (9) is fixedly connected to the side of the moving plate (5), the output end of the drive motor (12) is fixedly connected to one end of the rotating shaft (10), and the gear (11) meshes with the toothed plate (8) for transmission.

3. The sedimentation tank bottom scraper device according to claim 1, characterized in that: The connecting block (9) is slidably connected to the guide rod (13).

4. The sedimentation tank bottom scraper device according to claim 1, characterized in that: The output end of the waterproof motor (19) is fixedly connected to one end of the crushing rod (17), and the crushing blades (18) are equidistantly distributed along the length of the crushing rod (17).

5. The sedimentation tank bottom scraper device according to claim 1, characterized in that: The limiting rod (16) is slidably connected to the moving plate (5). Two sets of the limiting rod (16) are provided and symmetrically distributed on both sides of the mounting plate (15). The lower surface of the sludge scraper bottom plate (7) is in contact with the bottom of the sedimentation tank body (1).

6. The sedimentation tank bottom scraper device according to claim 1, characterized in that: The side of the movable plate (5) is fixedly installed with a mounting sleeve (20), and the inside of the mounting sleeve (20) is slidably connected with a telescopic rod (21). One end of the telescopic rod (21) is fixedly connected with a mud scraper side plate (22), and the other end of the telescopic rod (21) is fixedly connected with a limiting block (23). The inside of the mounting sleeve (20) is fixedly connected with a tension spring (24).

7. The sedimentation tank bottom scraper device according to claim 6, characterized in that: One end of the tension spring (24) is fixedly connected to the side of the limiting block (23), and the scraping surface of the sludge scraper (22) is in contact with the inner side of the sedimentation tank body (1).

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