Anti-stuck driving device of sewage sedimentation tank mud scraper

Abstract

The utility model discloses a kind of sewage sedimentation tank mud scraper anti-jamming driving devices, including sedimentation tank and driving motor, the surface of driving motor is provided with fixed frame, the other end of fixed frame is fixedly connected at the top of sedimentation tank, the output shaft end of driving motor is provided with anti-jamming component, the bottom end of anti-jamming component is vertically provided with scraper shaft, the side of scraper shaft is provided with mud scraping plate, the side and bottom of mud scraping plate are movably connected with the inner side wall and bottom of sedimentation tank.The utility model has the beneficial effect that by setting anti-jamming component, when driving motor rotates, scraper shaft is driven to rotate by anti-jamming component, when scraper is jammed, scraper shaft will be braked, after scraper shaft is braked, driving motor is separated from lock head by rotating pin block in anti-jamming component, under driving motor continuous rotation, connecting shaft in anti-jamming component will extrude lock slot while separating lock head from lock slot, and then connecting shaft is forcibly braked by scraper rod, causing driving motor overload damage.

Description

Technical Field

[0001] This utility model relates to the technical field of sewage treatment devices, and in particular to an anti-jamming drive device for a sludge scraper in a sewage sedimentation tank. Background Technology

[0002] Wastewater treatment technology is the technology of purifying wastewater generated by social activities through methods such as physical treatment, chemical treatment, and biological treatment. Among them, physical treatment separates suspended or floating solids in wastewater through physical action. In physical treatment, wastewater sedimentation tanks are used to physically settle impurities and sludge in wastewater, and then a sludge scraper is used to scrape off the settled impurities and sludge.

[0003] Because the wastewater contains a variety of impurities, including large particles of silt and gravel, the scraper blades may get stuck during the scraping process. When the scraper blades are stuck, the machine will brake forcibly, which will overload and damage the drive motor. This will not only stop the wastewater treatment process but also result in cost losses.

[0004] Therefore, how to provide a drive device to prevent jamming of a sludge scraper in a sewage sedimentation tank is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] One objective of this invention is to provide an anti-jamming drive device for a sludge scraper in a sewage sedimentation tank. This invention solves the problem in the prior art where sludge containing mud, sand, and gravel in the sedimentation tank may get stuck during the scraping process of the scraper, causing the scraper to be forcibly braked, which in turn leads to overload and damage to the drive motor.

[0006] A wastewater sedimentation tank sludge scraper anti-jamming drive device according to an embodiment of the present invention includes a sedimentation tank and a drive motor. A fixing frame is provided on the surface of the drive motor, and the other end of the fixing frame is fixedly connected to the top of the sedimentation tank. An anti-jamming component is provided at the output shaft end of the drive motor. A scraper shaft is vertically provided at the bottom end of the anti-jamming component, and a scraper plate is provided on the side of the scraper shaft. The side and bottom of the scraper plate are movably connected to the inner wall and bottom of the sedimentation tank. The anti-jamming component includes an outer tube, a connecting shaft, an elastic connector, a pin block, and a locking mechanism. The top end of the connecting shaft... Fixedly connected to the output shaft of the drive motor, the top end of the scraper shaft is movably connected to the bottom end of the connecting shaft, and the outer tube is movably sleeved at the connection between the scraper shaft and the connecting shaft. The outer side of the elastic connector is set on the inner wall of the outer tube, and the inner side of the elastic connector is set on the side of the connecting shaft. The pin block is set at the bottom of the elastic connector. A locking groove is opened on the side of the scraper shaft near the top end. The locking mechanism is set on the outer tube at the position corresponding to the locking groove. One end of the locking mechanism extends into the inside of the outer tube and is inserted into the inside of the locking groove. The pin block is movably engaged with the surface of the locking mechanism located inside the locking groove.

[0007] The outer tube is a round tube, and both the connecting shaft and the scraper shaft are cylindrical shaft connecting shafts. The side of the scraper shaft near the top is movably attached to the inner side of the pin block.

[0008] The elastic connector includes an outer fixed seat, an inner fixed seat, a connecting groove, a connecting guide ring, and a spring. The outer fixed seat is fixedly connected to the inner wall of the outer tube, and the inner fixed seat is fixedly connected to the side of the connecting shaft. The connecting groove is opened on the side of both the outer and inner fixed seats, passing through them. The connecting guide ring is movably connected inside the connecting groove, and the curvature of the connecting groove matches the curvature of the connecting guide ring. The spring is movably sleeved on the surface of the connecting guide ring located between the outer and inner fixed seats, and both ends of the spring are movably connected to the opposite surfaces of the outer and inner fixed seats, respectively.

[0009] The number of elastic connectors is greater than two sets, and the elastic connectors are arranged linearly on the scraper shaft and the outer tube.

[0010] The number of external fixation seats and internal fixation seats are two sets, and the two sets of external fixation seats and internal fixation seats are arranged alternately. The pin block is fixedly connected to the bottom end of the internal fixation seat.

[0011] The locking mechanism includes a lock head, a guide groove, a movable rod, a fixed block, a fixed ring, an elastic element, and a connecting rod that are inserted into the lock groove. The guide groove is formed on the surface of the outer tube, connecting the side of the outer tube to the inner wall. The movable rod is movably connected inside the guide groove, and its end face is movably connected to the surface of the lock head. The lock head is movably engaged inside the lock groove. The other end of the movable rod extends to the outside of the outer tube. The fixed block is fixedly sleeved on the movable rod on the surface of the outer tube. One end of the connecting rod is fixedly connected to the side of the outer tube, and the other end is fixedly connected to the fixed ring. The fixed ring is movably sleeved on the surface of the movable rod. The elastic element is movably sleeved on the movable rod on the surface between the fixed block and the fixed ring, and its two ends are movably connected to the opposite surfaces of the fixed block and the fixed ring, respectively.

[0012] The lock head has chamfers at both ends, and the inner walls of the lock groove match the shape of the two ends of the lock head. The pin block also has chamfers on both sides. The side of the lock head closest to the inner wall of the outer tube is designed as an arc surface. The height of the lock head is higher than the movable rod. The inner side of the pin block is movably connected to the outer side of the lock head, which is higher than the movable rod.

[0013] The beneficial effects of this utility model are:

[0014] By setting an anti-jamming component, when the drive motor rotates, it drives the scraper shaft to rotate through the anti-jamming component. When the scraper is jammed, it will cause the scraper shaft to be braked. After the scraper shaft is braked, the drive motor will rotate through the pin block in the anti-jamming component to separate from the lock head. Then, as the drive motor continues to rotate, it will drive the connecting shaft in the anti-jamming component to squeeze the lock groove and separate the lock head from the lock groove. As a result, the connecting shaft will be forcibly braked by the scraper rod, causing the drive motor to be overloaded and damaged. This solves the problem in the prior art that the sludge in the sedimentation tank contains mud, sand and gravel, which may get jammed during the scraping process of the scraper in the sludge scraper, causing the scraper to be forcibly braked and thus causing the drive motor to be overloaded and damaged. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the anti-jamming drive device for a sludge scraper in a sewage sedimentation tank proposed in this utility model.

[0017] Figure 2 This is a three-dimensional cross-sectional view of the connecting shaft and locking mechanism positions in the anti-jamming component of the anti-jamming drive device for a sludge scraper in a sewage sedimentation tank, as proposed in this utility model.

[0018] Figure 3 This is a three-dimensional cross-sectional view of the elastic connecting member in the anti-jamming component of the anti-jamming drive device for a sludge scraper in a sewage sedimentation tank, as proposed in this utility model.

[0019] Figure 4 This is a three-dimensional structural diagram of the anti-jamming component in the anti-jamming drive device for a sludge scraper in a sewage sedimentation tank, as proposed in this utility model.

[0020] Figure 5 This is a cross-sectional three-dimensional structural diagram of the locking mechanism position in the anti-jamming component of the anti-jamming drive device for a sludge scraper in a sewage sedimentation tank, as proposed in this utility model.

[0021] The attached diagram shows: 1. Sedimentation tank; 2. Drive motor; 3. Fixing frame; 4. Anti-jamming component; 5. Scraper shaft; 6. Sludge scraper; 7. Outer pipe; 8. Connecting shaft; 9. Elastic connector; 10. Pin block; 11. Locking mechanism; 12. Outer fixing seat; 13. Inner fixing seat; 14. Connecting groove; 15. Connecting guide ring; 16. Spring component; 17. Lock head; 18. Guide groove; 19. Movable rod; 20. Fixing block; 21. Fixing ring; 22. Elastic component; 23. Connecting rod; 24. Lock groove. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0023] refer to Figure 1-5 In this embodiment, a sedimentation tank 1 and a drive motor 2 are included. A fixing frame 3 is provided on the surface of the drive motor 2. The other end of the fixing frame 3 is fixedly connected to the top of the sedimentation tank 1. An anti-jamming component 4 is provided at the output shaft end of the drive motor 2. A scraper shaft 5 is vertically provided at the bottom end of the anti-jamming component 4. A sludge scraper 6 is provided on the side of the scraper shaft 5. The side and bottom of the sludge scraper 6 are movably connected to the inner wall and bottom of the sedimentation tank 1.

[0024] The anti-jamming component 4 includes an outer tube 7, a connecting shaft 8, an elastic connector 9, a pin block 10, and a locking mechanism 11. The top end of the connecting shaft 8 is fixedly connected to the output shaft of the drive motor 2. The top end of the scraper shaft 5 is movably connected to the bottom end of the connecting shaft 8. The outer tube 7 is movably sleeved at the connection between the scraper shaft 5 and the connecting shaft 8. The outer side of the elastic connector 9 is set on the inner wall of the outer tube 7, and the inner side of the elastic connector 9 is set on the side of the connecting shaft 8. The pin block 10 is set at the bottom of the elastic connector 9. The outer tube 7 is a round tube, and both the connecting shaft 8 and the scraper shaft 5 are cylindrical shafts. The side of the scraper shaft 5 near the top end is movably fitted against the inner side of the pin block 10. A locking groove 24 is opened on the side of the scraper shaft 5 near the top end. The locking mechanism 11 is set on the outer tube 7 at the position corresponding to the locking groove 24. One end of the locking mechanism 11 extends into the outer tube 7 and is inserted into the inside of the locking groove 24. The pin block 10 is movably engaged with the surface of the locking mechanism 11 located inside the locking groove 24.

[0025] In specific operation, firstly, the top of the connecting shaft 8 and the scraper shaft 5 need to be aligned. Then, the pin block 10 is operated to move it away from the lock groove 24. Then, the locking mechanism 11 is operated to lock it in the lock groove 24. Finally, the pin block 10 returns to its original position under the elastic force of the elastic connector 9 and is locked on the surface of the lock head 17 to limit the lock head 17.

[0026] refer to Figure 1-5In this embodiment, the number of elastic connectors 9 is greater than two sets, and these elastic connectors 9 are linearly arranged on the scraper shaft 5 and the outer tube 7. Each elastic connector 9 includes an outer fixing seat 12, an inner fixing seat 13, a connecting groove 14, a connecting guide ring 15, and an elastic element 22. The outer fixing seat 12 is fixedly connected to the inner wall of the outer tube 7, and the inner fixing seat 13 is fixedly connected to the side of the connecting shaft 8. The connecting groove 14 is formed on the sides of both the outer fixing seat 12 and the inner fixing seat 13, penetrating both the outer fixing seat 12 and the inner fixing seat 13, thus connecting... The guide ring 15 is movably connected inside the connecting groove 14. The curvature of the connecting groove 14 matches the curvature of the connecting guide ring 15. The spring member 16 is movably sleeved on the surface of the connecting guide ring 15 located between the outer fixing seat 12 and the inner fixing seat 13. The two ends of the spring member 16 are movably connected to the opposite surfaces of the outer fixing seat 12 and the inner fixing seat 13, respectively. There are two sets of outer fixing seats 12 and inner fixing seats 13. The two sets of outer fixing seats 12 and inner fixing seats 13 are staggered. The pin block 10 is fixedly connected to the bottom end of the inner fixing seat 13.

[0027] refer to Figure 1-5 In this embodiment, the locking mechanism 11 includes a lock head 17, a guide groove 18, a movable rod 19, a fixing block 20, a fixing ring 21, an elastic element 22, and a connecting rod 23 that are inserted into the lock groove 24. The guide groove 18 is formed on the surface of the outer tube 7, connecting the side of the outer tube 7 to the inner wall. The movable rod 19 is movably connected inside the guide groove 18, and its end face is movably connected to the surface of the lock head 17. The lock head 17 is movably engaged inside the lock groove 24, and the other end of the movable rod 19 extends to the outside of the outer tube 7. The fixing block 20 is fixedly sleeved on the surface of the movable rod 19 located outside the outer tube 7. One end of the connecting rod 23 is fixedly connected to the side of the outer tube 7. The other end of 23 is fixedly connected to the fixed ring 21. The fixed ring 21 is movably sleeved on the surface of the movable rod 19. The elastic element 22 is movably sleeved on the surface of the movable rod 19 located between the fixed block 20 and the fixed ring 21. The two ends of the elastic element 22 are movably connected to the opposite surfaces of the fixed block 20 and the fixed ring 21, respectively. The two ends of the lock head 17 are chamfered. The two sides of the inner wall of the lock groove 24 match the shape of the two ends of the lock head 17. The two sides of the pin block 10 are also chamfered. The side of the lock head 17 near the inner wall of the outer tube 7 is designed as an arc surface. The height of the lock head 17 is higher than that of the movable rod 19. The inner side of the pin block 10 is movably connected to the outer side of the lock head 17, which is higher than that of the movable rod 19.

[0028] In practice, before the scraper shaft 5 is inserted into the outer tube 7, the movable rod 19 on the locking mechanism 11 needs to be pulled to move the lock head 17 outward. After the scraper shaft 5 is inserted into the outer tube 7 and aligns with the connecting shaft 8, the movable rod 19 is released. At this time, the elastic force of the elastic element 22 will push the movable rod 19 towards the lock groove 24 through the fixing block 20. The movable rod 19 being pushed will cause the lock head 17 to be inserted into the lock groove 24. It should be noted that the pin block 10 needs to be rotated during installation. Move the lock head 17 away from the lock head 17 so that the lock head 17 can move normally. Specifically, after positioning the outer tube 7, rotate the connecting shaft 8. The rotation of the connecting shaft 8 will drive the pin block 10 to rotate away from the lock head 17 through the inner fixing seat 13. When the lock head 17 is inserted into the lock groove 24, the positioning of the outer tube 7 is released. Then, under the elastic force of the spring member 16, the positions of the inner fixing seat 13 and the outer fixing seat 12 are restored to ensure a balanced state. Then, the pin block 10 is locked in the position of the lock head 17, positioning the lock head 17 in the lock groove 24.

[0029] The operating method of this utility model is as follows:

[0030] First, spring 16, as Figure 4As shown, to maintain a balanced state, when the drive motor 2 starts, it drives the connecting shaft 8 to rotate. The rotation of the connecting shaft 8 will drive the inner fixed seat 13 to rotate. The rotation of the inner fixed seat 13 will compress the spring member 16. Since the drive motor 2 in this sludge scraper is designed as a low-speed geared motor, the drive scraper "slowly" scrapes the sludge in the sedimentation tank 1, so the rotation is relatively slow. After the drive motor 2 starts, the slow rotation will drive the inner fixed seat 13 to compress the spring member 16 through the connecting shaft 8. The counter-force of the spring member 16 after being compressed will push the outer fixed seat. 12. The outer fixed seat 12 is pushed by the counterforce of the spring 16, causing the outer tube 7 to rotate. Since the inner fixed seat 13 and the pin block 10 move, the rotation of the inner fixed seat 13 will cause the pin block 10 to rotate. Under normal start-up of the drive motor 2, due to inertia and the counterforce of the spring 16, the pin block 10 is not easy to separate from the lock head 17 in the locking mechanism 11. The rotation of the outer tube 7 will drive the scraper shaft 5 to rotate through the locking mechanism 11. The scraper shaft 5 drives the scraper to rotate to achieve the sludge scraping effect. After the scraper is jammed, its scraper shaft 5 is also jammed. After the scraper shaft 5 is jammed and braked, it will drive the outer tube 7 and the outer fixed seat 12 to be braked through the locking mechanism 11. At this time, the drive motor 2 still drives the connecting shaft 8 to rotate. The rotation of the connecting shaft 8 will drive the inner fixed seat 13 to generate a greater thrust to push the spring 16 to contract, while the outer fixed seat 12 is braked. Therefore, after the spring 16 is compressed to the predetermined value, the pin block 10 separates from the lock head 17 in the locking mechanism 11 through the rotation of the inner fixed seat 13. After separation, the lock head 17 When in an unpositioned state, the locking head 17 is squeezed by the locking groove 24 as the connecting shaft 8 continues to rotate. The locking head 17 is squeezed and moves away from the outer tube 7. After being squeezed, the locking head 17 moves with the moving rod 19 and separates from the locking groove 24. After the locking head 17 separates from the locking groove 24, the connection between the scraper shaft 5 and the connecting shaft 8 is broken, so that the scraper shaft 5 no longer follows the connecting shaft 8 to rotate. This realizes that after the scraper shaft 5 on the sludge scraper is stuck, the drive motor 2 is separated from the scraper shaft 5 to protect the drive motor 2 from overload and damage.

[0031] 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 kind of sewage sedimentation tank mud scraper anti-stuck driving device, it is characterized in that, The system includes a sedimentation tank (1) and a drive motor (2). The surface of the drive motor (2) is provided with a fixing frame (3). The other end of the fixing frame (3) is fixedly connected to the top of the sedimentation tank (1). The output shaft end of the drive motor (2) is provided with an anti-jamming component (4). The bottom end of the anti-jamming component (4) is vertically provided with a scraper shaft (5). The side of the scraper shaft (5) is provided with a sludge scraper (6). The side and bottom of the sludge scraper (6) are movably connected to the inner wall and bottom of the sedimentation tank (1). The anti-jamming component (4) includes an outer tube (7), a connecting shaft (8), an elastic connector (9), a pin block (10), and a locking mechanism (11). The top end of the connecting shaft (8) is fixedly connected to the output shaft of the drive motor (2), and the top end of the scraper shaft (5) is movably connected to the bottom end of the connecting shaft (8). The outer tube (7) is movably sleeved at the connection between the scraper shaft (5) and the connecting shaft (8). The outer side of the elastic connector (9) is set on the inner wall of the outer tube (7). The inner side of the connecting shaft (8) is set on the side of the connecting shaft (8), the pin block (10) is set at the bottom of the elastic connector (9), the side of the scraper shaft (5) near the top is provided with a locking groove (24), the locking mechanism (11) is set on the outer tube (7) at the position corresponding to the locking groove (24), one end of the locking mechanism (11) extends into the outer tube (7) and is inserted into the inside of the locking groove (24), and the pin block (10) is movably engaged with the surface of the locking mechanism (11) located inside the locking groove (24).

2. The anti-jamming drive device for the sludge scraper in a sewage sedimentation tank (1) according to claim 1, characterized in that, The outer tube (7) is a round tube, and the connecting shaft (8) and the scraper shaft (5) are both cylindrical shaft connecting shafts (8). The side of the scraper shaft (5) near the top is movably attached to the inner side of the pin block (10).

3. The anti-jamming drive device for the sludge scraper in a sewage sedimentation tank (1) according to claim 2, characterized in that, The elastic connector (9) includes an outer fixing seat (12), an inner fixing seat (13), a connecting groove (14), a connecting guide ring (15), and a spring (16). The outer fixing seat (12) is fixedly connected to the inner wall of the outer tube (7), and the inner fixing seat (13) is fixedly connected to the side of the connecting shaft (8). The connecting groove (14) is opened on the side of the outer fixing seat (12) and the inner fixing seat (13) and passes through the outer fixing seat (12) and the inner fixing seat (13). The connecting guide ring (15) is movably connected inside the connecting groove (14). The curvature of the connecting groove (14) matches the curvature of the connecting guide ring (15). The spring (16) is movably sleeved on the surface of the connecting guide ring (15) located between the outer fixing seat (12) and the inner fixing seat (13). The two ends of the spring (16) are movably connected to the opposite surfaces of the outer fixing seat (12) and the inner fixing seat (13), respectively.

4. The anti-jamming drive device for the sludge scraper in a sewage sedimentation tank (1) according to claim 3, characterized in that, The number of elastic connectors (9) is greater than two sets, and the elastic connectors (9) are arranged linearly on the scraper shaft (5) and the outer tube (7).

5. The anti-jamming drive device for the sludge scraper in a sewage sedimentation tank (1) according to claim 4, characterized in that, The number of the external fixing seat (12) and the internal fixing seat (13) are two sets, and the two sets of external fixing seats (12) and internal fixing seats (13) are arranged alternately. The pin block (10) is fixedly connected to the bottom end of the internal fixing seat (13).

6. The anti-jamming drive device for the sludge scraper in a sewage sedimentation tank (1) according to claim 5, characterized in that, The locking mechanism (11) includes a lock head (17) that is inserted into the lock groove (24), a guide groove (18), a movable rod (19), a fixing block (20), a fixing ring (21), an elastic element (22), and a connecting rod (23). The guide groove (18) is formed on the surface of the outer tube (7) to align the side of the outer tube (7) with the inner wall. The movable rod (19) is movably connected inside the guide groove (18). The end face of the movable rod (19) is movably connected to the surface of the lock head (17). The lock head (17) is movably engaged inside the lock groove (24). The other end of the movable rod (19) extends to the outer wall. Outside the tube (7), the fixed block (20) is fixedly sleeved on the movable rod (19) on the surface outside the outer tube (7). One end of the connecting rod (23) is fixedly connected to the side of the outer tube (7), and the other end of the connecting rod (23) is fixedly connected to the fixed ring (21). The fixed ring (21) is movably sleeved on the surface of the movable rod (19). The elastic element (22) is movably sleeved on the surface of the movable rod (19) between the fixed block (20) and the fixed ring (21). The two ends of the elastic element (22) are movably connected to the opposite surfaces of the fixed block (20) and the fixed ring (21), respectively.

7. The anti-jamming drive device for the sludge scraper in a sewage sedimentation tank (1) according to claim 6, characterized in that, The lock head (17) has chamfers at both ends. The inner walls of the lock groove (24) match the shape of the two ends of the lock head (17). The two sides of the pin block (10) also have chamfers. The side of the lock head (17) near the inner wall of the outer tube (7) is designed as an arc surface. The height of the lock head (17) is higher than the movable rod (19). The inner side of the pin block (10) is movably connected to the outer side of the lock head (17) which is higher than the movable rod (19).

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