Reciprocating type surface scum cleaning device

Abstract

The utility model relates to the technical field of scum cleaning, and provides a reciprocating type surface scum cleaning device which is used for being installed on a joist barrow of a sedimentation tank and is characterized in that the reciprocating type surface scum cleaning device comprises a mud scraping vehicle and a scraping plate, the mud scraping vehicle is used for being movably arranged on one side of the upstream face of the joist barrow, and the moving direction of the mud scraping vehicle is the same as the length direction of the joist barrow; the scraping plate is arranged on the mud scraping vehicle in a lifting manner, and after the scraping plate descends, the mud scraping vehicle moves from the middle of the sedimentation tank to the outer side and is used for pushing scum in the sedimentation tank to the edge of the sedimentation tank. According to the technical scheme, the problems that the water outlet effect and sense are affected by scum appearing in the sedimentation tank in the prior art, time and labor are wasted by manual cleaning, the labor intensity is high, and the working efficiency is low are solved.

Description

Technical Field

[0001] This utility model relates to the field of scum removal technology, specifically to a reciprocating surface scum removal device. Background Technology

[0002] Sedimentation tanks are an indispensable part of the activated sludge system in wastewater treatment plants, primarily used for sludge-water separation, sludge thickening, and activated sludge recirculation. Their operational performance directly impacts effluent quality and the concentration of recirculated sludge. Factors such as influent shock, abnormal pH levels, low dissolved oxygen (DO) concentration at the end of the aerobic tank, and denitrification in the sedimentation tank can cause sludge to float to the surface, affecting subsequent effluent quality. Furthermore, the nitrogen and phosphorus in the biologically treated effluent easily promote the growth of algae and other organisms in the sedimentation tank, which then float to the surface. Sedimentation tanks are relatively large (typically 20-50m in diameter), and the presence of scum will affect the effluent quality and its appearance. Manual cleaning is time-consuming, labor-intensive, and inefficient. Utility Model Content

[0003] This utility model proposes a reciprocating surface scum cleaning device, which solves the problems in related technologies where scum in sedimentation tanks affects the effluent quality and sensory experience, and manual cleaning is time-consuming, labor-intensive, and inefficient.

[0004] The technical solution of this utility model is as follows: A reciprocating surface scum cleaning device, used for installation on a gantry crane in a sedimentation tank, the key feature being: comprising,

[0005] A sludge scraper is used to move and is mounted on the water-facing side of the gantry crane, and the direction of movement of the sludge scraper is the same as the length direction of the gantry crane.

[0006] A scraper is mounted on the sludge scraper truck. After the scraper is lowered, the sludge scraper truck moves from the center of the sedimentation tank to the outside to push the scum in the sedimentation tank to the edge of the sedimentation tank.

[0007] Furthermore, it also includes,

[0008] A lifting frame is provided on one side of the gantry crane. There are multiple lifting frames arranged along the length of the gantry crane. The bottom of the lifting frame has a notch, and the scraper is located below the lifting frame.

[0009] The track runs through all the lifting frames and is connected to the lifting frames. There are tracks on both sides of the opening, and the sludge scraper is movable between the tracks on both sides.

[0010] A lifting drive mechanism is located between the tracks on both sides. The upper end of the lifting drive mechanism is connected to the sludge scraper, and the lower end of the lifting drive mechanism is connected to the scraper. When the lifting drive mechanism is extended, it is used to drive the scraper to descend.

[0011] Furthermore, it also includes,

[0012] A drive shaft is rotatably mounted on the sludge scraper. There are two drive shafts, which are arranged along the length of the track, and the axial direction of the drive shaft is perpendicular to the length of the track.

[0013] The traveling wheels are mounted on the drive shaft, with traveling wheels at both ends of the drive shaft. The lowest point of each traveling wheel is located below the lowest point of the sludge scraper and is in contact with the track.

[0014] Furthermore, it also includes,

[0015] A walking drive mechanism is mounted on the sludge scraper, and the output shaft of the walking drive mechanism is connected to the drive shaft for transmission.

[0016] Limit switches are provided at both ends of the sludge scraper.

[0017] The levers are provided at both ends of the gantry. When the limit switch touches the lever, the walking drive mechanism rotates in the opposite direction, so as to make the sludge scraper move in the opposite direction from the edge of the sedimentation tank to the middle of the sedimentation tank.

[0018] Furthermore, it also includes a lifting rod, the upper end of which is connected to the lower end of the lifting drive mechanism, and the lower end of which is connected to the scraper.

[0019] It also includes a support beam, which is disposed on the scraper and located on the side of the scraper away from the edge of the sedimentation tank. The length direction of the support beam is the same as the length direction of the scraper. There are multiple support beams, and all the support beams are arranged in the vertical direction.

[0020] It also includes reinforcing ribs, which are connected between two adjacent support beams and are in contact with the scraper. There are multiple reinforcing ribs, and all the reinforcing ribs are arranged along the length of the support beam.

[0021] Furthermore, it also includes baffles, with baffles at both ends of the scraper. One end of the baffle is connected to the scraper, and the other end of the baffle extends toward the scraper towards the edge of the sedimentation tank.

[0022] Furthermore, both the scraper and the baffle have water passage holes.

[0023] Furthermore, the baffle and the scraper are detachably connected.

[0024] The working principle and beneficial effects of this utility model are as follows: The sludge scraper is moved along the water-facing side of the gantry crane in the sedimentation tank, with the scraper moving in the same direction as the length of the gantry crane. A scraper plate is mounted on the scraper. After the scraper plate descends, the scraper moves from the center of the sedimentation tank outwards to push the scum to the edge of the tank. When cleaning is needed, the scraper plate descends to a position just below the water surface. The movement of the scraper from the center outwards acts like a broom, gradually gathering the scum floating on the water surface towards the edge of the sedimentation tank, thus pushing the scum to the edge. Then, the scraper plate rises and separates from the water surface, and the scraper moves in the opposite direction back to the center of the sedimentation tank. The scraper plate then descends again to near the water surface, and the scraper moves from the center outwards again, repeating this process. As the gantry crane moves within the sedimentation tank, the scraper effectively cleans the entire surface of the tank of scum.

[0025] This invention pushes dispersed scum to the edge of the sedimentation tank for easy cleaning. Compared to manual cleaning, it is more time-saving and labor-saving, significantly reducing labor intensity, shortening cleaning time, and improving work efficiency. It ensures the continuous and efficient operation of the sedimentation tank, reduces the adverse effects of scum accumulation on effluent quality, and ensures stable and compliant discharge from the wastewater treatment plant. This invention is based on an improvement of the existing gantry crane in the sedimentation tank, eliminating the need for large-scale modifications to the main structure, thus saving on renovation costs. Furthermore, the operation of the sludge scraper and scraper does not affect the normal lifting and transporting of sludge pumps and scrapers by the gantry crane; both can be reused in shifts, improving the overall utilization rate of the equipment. Attached Figure Description

[0026] The preferred embodiments will be described below in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages and implementation methods of this utility model.

[0027] Figure 1 This is a top view of the present invention.

[0028] Figure 2 This is a right view of the connection between the sludge scraper and the hoisting frame in this utility model.

[0029] Figure 3 This is a front view of the connection between the sludge scraper and the scraper blade in this utility model.

[0030] Figure 4 This is a top view of the connection between the sludge scraper and the scraper blade in this utility model.

[0031] In the diagram: 1. Sludge scraper, 2. Scraper, 3. Lifting frame, 4. Track, 5. Lifting drive mechanism, 6. Notch, 7. Drive shaft, 8. Traveling wheel, 9. Traveling drive mechanism, 10. Limit switch, 11. Lever, 12. Lifting rod, 13. Support beam, 14. Reinforcing rib, 15. Baffle, 16. Gantry crane. Detailed Implementation

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0033] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0034] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between 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.

[0035] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0036] Example, refer to Figures 1-3 As an embodiment of this utility model, a reciprocating surface scum cleaning device is proposed for installation on a gantry 16 of a sedimentation tank. It includes a scraper 1 and a scraper 2. The scraper 1 is movably positioned on the water-facing side of the gantry 16, and the moving direction of the scraper 1 is the same as the length direction of the gantry 16. The scraper 2 is raised and lowered on the scraper 1. After the scraper 2 is lowered, the scraper 1 moves from the middle of the sedimentation tank to the outside, and is used to push the scum in the sedimentation tank to the edge of the sedimentation tank.

[0037] In this embodiment, when cleaning is required, the scraper 2 descends to a position just below the water surface of the sedimentation tank. The scraper truck 1 moves from the center of the sedimentation tank outwards, causing the scraper 2 to act like a broom, gradually gathering the floating scum towards the edge of the sedimentation tank. Then, the scraper 2 rises and separates from the water surface. The scraper truck 1 moves the scraper 2 in the opposite direction back to the center of the sedimentation tank, and then lowers the scraper 2 back to near the water surface. The scraper truck 1 then moves the scraper 2 from the center of the sedimentation tank outwards again, repeating this process. The scraper truck 1, along with the gantry crane 16, moves through the sedimentation tank, effectively cleaning the entire surface of the tank.

[0038] This invention pushes scum dispersed in the middle of the sedimentation tank to the edge and discharges it through the scum outlet. Compared with manual cleaning, it is more time-saving and labor-saving, greatly reducing labor intensity, shortening cleaning time, and improving work efficiency. It ensures the continuous and efficient operation of the sedimentation tank, reduces the adverse effects of scum accumulation on effluent quality, and ensures stable and compliant discharge from the wastewater treatment plant. This invention is an improvement on the existing gantry crane 16 in the sedimentation tank, eliminating the need for large-scale modifications to the main structure of the sedimentation tank, thus saving on modification costs. Furthermore, the operation of the sludge scraper 1 and the scraper 2 does not affect the normal lifting and transporting of sludge pumps and scrapers by the gantry crane 16; the two can be reused in shifts, improving the overall utilization rate of the equipment.

[0039] Furthermore, such as Figure 1 and Figure 2 As shown, it also includes a hoisting frame 3, a track 4, and a lifting drive mechanism 5. The hoisting frame 3 is used to be set on one side of the gantry crane 16. There are multiple hoisting frames 3, and all the hoisting frames 3 are arranged along the length direction of the gantry crane 16. The bottom of the hoisting frame 3 has a notch 6, and the scraper 2 is located below the hoisting frame 3. The track 4 runs through all the hoisting frames 3 and is connected to the hoisting frames 3. There are tracks 4 on both sides of the notch 6. The sludge scraper 1 is moved between the tracks 4 on both sides. The lifting drive mechanism 5 is located between the tracks 4 on both sides. The upper end of the lifting drive mechanism 5 is connected to the sludge scraper 1, and the lower end of the lifting drive mechanism 5 is connected to the scraper 2. After the lifting drive mechanism 5 extends, it is used to drive the scraper 2 to descend.

[0040] Multiple lifting frames 3 arranged along the length of the gantry crane 16 on the right side provide stable suspension support points for the entire cleaning device. Two tracks 4 run through and connect all the lifting frames 3, forming a precise guide path to ensure that the scraper truck 1 can only move smoothly in the predetermined direction, in the same direction as the gantry crane 16, thus avoiding deviation. The lifting drive mechanism 5 is located between the two tracks 4, with the scraper truck 1 at the top and the scraper 2 at the bottom. The notch 6 at the bottom of the lifting frame 3 provides sufficient working space under the scraper 2 without hindering its lifting and reciprocating movements. This compact structural layout makes full use of the space on the side of the gantry crane 16, and the high precision of the coordinated operation of each component enhances the structural stability of the entire cleaning device. This ensures that the lifting and movement of the scraper 2 are carried out within a standardized and reliable framework, reducing unstable factors such as swaying and deviation, improving the accuracy of scum removal, laying the foundation for efficient scum collection in the future, and ensuring long-term operational reliability while reducing maintenance frequency.

[0041] Furthermore, such as Figure 2 and Figure 3 As shown, it also includes a drive shaft 7 and a traveling wheel 8. The drive shaft 7 is rotatably mounted on the sludge scraper 1. There are two drive shafts 7, which are arranged along the length direction of the track 4. The axial direction of the drive shaft 7 is perpendicular to the length direction of the track 4. The traveling wheel 8 is mounted on the drive shaft 7. There is a traveling wheel 8 at both ends of the drive shaft 7. The lowest point of the traveling wheel 8 is located below the lowest point of the sludge scraper 1 and is in contact with the track 4.

[0042] Taking a configuration where both left and right tracks 4 are oriented along the longitudinal direction as an example, two drive shafts 7 are rotatably mounted on the scraper 1. The axis of the drive shafts 7 is oriented along the lateral direction, and both ends of the drive shafts 7 are equipped with traveling wheels 8. Utilizing the principle of rolling friction, when the drive shafts 7 rotate, the traveling wheels 8 roll along the tracks 4, converting the sliding friction of the scraper 1 into rolling friction. This greatly reduces movement resistance and energy loss, allowing the scraper 1 to respond quickly and smoothly to drive commands, moving from the center of the sedimentation tank to the outside or in the opposite direction, meeting the reciprocating motion requirements during the scum removal process. Moreover, the rolling motion causes less wear on the tracks 4, extending their service life, reducing equipment maintenance costs, and ensuring the long-term stable and efficient operation of the entire cleaning process.

[0043] Furthermore, such as Figure 2As shown, it also includes a walking drive mechanism 9, a limit switch 10, and a lever 11. The walking drive mechanism 9 is mounted on the sludge scraper 1, and the output shaft of the walking drive mechanism 9 is connected to the drive shaft 7. Limit switches 10 are provided at both ends of the sludge scraper 1. Lever 11 is provided at both ends of the gantry 16. When the limit switch 10 touches the lever 11, the walking drive mechanism 9 rotates in the opposite direction, which is used to make the sludge scraper 1 move in the opposite direction from the edge of the sedimentation tank to the middle of the sedimentation tank.

[0044] Taking the sludge scraper 1 moving in a front-to-back direction with the scraper 2 located below the front end of the sludge scraper 1 as an example, the walking drive mechanism 9 is mounted on the sludge scraper 1 and connected to the drive shaft 7. It is the power source for the movement of the sludge scraper 1, outputting stable torque to drive the drive shaft 7 to rotate, thus moving the walking wheels 8 forward or backward. Limit switches 10 are installed at both ends of the sludge scraper 1, and levers 11 are installed at both ends of the gantry crane 16. When the sludge scraper 1 moves to the vicinity of one end of the gantry crane 16, the limit switch 10 touches the lever 11 at that end, triggering an electrical signal feedback to the walking drive mechanism 9, causing it to automatically reverse, thus achieving automatic reversal of the sludge scraper 1 without manual intervention and fully automated control. This enables automated reciprocating operation of the cleaning device, greatly improving the continuity and intelligence of cleaning operations, and saving time and labor.

[0045] Furthermore, such as Figure 2 and Figure 3 As shown, it also includes a lifting rod 12, the upper end of which is connected to the lower end of the lifting drive mechanism 5, and the lower end of the lifting rod 12 is connected to the scraper 2. By using the lifting rod 12 to connect the lifting drive mechanism 5 and the scraper 2 together, the extension range of the lifting drive mechanism 5 can be reduced.

[0046] Furthermore, such as Figure 3 As shown, it also includes a support beam 13, which is mounted on the scraper 2 and located on the side of the scraper 2 away from the edge of the sedimentation tank. The length direction of the support beam 13 is the same as the length direction of the scraper 2. There are multiple support beams 13, all of which are arranged vertically. Taking the sludge scraper 1 moving in the front-back direction and the scraper 2 located below the front end of the sludge scraper 1 as an example, the support beam 13 is mounted on the rear side of the scraper 2. This can improve the rigidity of the scraper 2, enhance its impact resistance and deformation resistance, and enable it to maintain good working condition in complex water surface operation environments. It can stably scrape scum for a long time, improve equipment durability, reduce cleaning interruptions caused by scraper 2 failure, and improve overall operational reliability.

[0047] Furthermore, such as Figure 3As shown, it also includes reinforcing ribs 14, which are connected between two adjacent support beams 13 and are in contact with the scraper 2. There are multiple reinforcing ribs 14, all of which are arranged along the length of the support beams 13. By using multiple reinforcing ribs 14 arranged in the left-right direction to connect two adjacent support beams 13 together, a frame structure is formed. Moreover, since both the support beams 13 and the reinforcing ribs 14 are in contact with the scraper 2, the rigidity of the scraper 2 can be further improved, and the scraper 2's impact resistance and deformation resistance can be enhanced.

[0048] Furthermore, such as Figure 4 As shown, it also includes baffles 15. There are baffles 15 at both ends of the scraper 2. One end of the baffle 15 is connected to the scraper 2, and the other end of the baffle 15 extends towards the side of the scraper 2 near the edge of the sedimentation tank. Taking the sludge scraper 1 moving in the front-back direction and the scraper 2 located below the front end of the sludge scraper 1 as an example, baffles 15 are set at both ends of the scraper 2. The rear end of the baffle 15 is connected to the scraper 2, and the front end of the baffle 15 extends towards the front of the scraper 2. During the process of the scraper 2 pushing the scum to move, the baffles 15 can prevent the scum from escaping from both ends of the scraper 2, effectively gathering the scum within the range of action of the scraper 2. It is like adding a "fence" to the scum cleaning operation, which can reduce the leakage of scum, improve the scum collection rate, and ensure that each cleaning operation can push the scum on the surface of the sedimentation tank to the edge to the maximum extent. This can improve the overall cleaning effect, reduce the risk of secondary pollution caused by scum residue, and ensure the continuous stability of the water quality in the sedimentation tank.

[0049] Furthermore, both the scraper 2 and the baffle 15 have water passage holes. When the scraper 2 moves the baffle 15 in the water, water can flow through these water passage holes, preventing the scraper 2 and the baffle 15 from forming a large water resistance surface in the water. By utilizing the principle of water flow diversion, the resistance of the water flow to the movement of the scraper 2 can be reduced, making the scraper 2 move more smoothly. This can reduce the operating energy consumption of the scraper 2, increase the moving speed, accelerate the scum removal process, and at the same time reduce equipment shaking and instability caused by water resistance, thereby improving the stability and efficiency of the cleaning operation.

[0050] Furthermore, the baffle 15 and scraper 2 are detachably connected. Using a detachable connection structure such as slots and bolts, when the baffle 15 wears out due to long-term use, becomes damaged, or needs to be replaced with a baffle 15 of different height and shape according to different sedimentation tank conditions, it can be easily and quickly removed from the scraper 2 for individual maintenance and replacement. This improves the maintainability and adaptability of the equipment, reduces maintenance costs and time, and allows for flexible adjustment of the baffle 15 configuration according to actual needs, ensuring the cleaning device is always in optimal working condition and can meet diverse sedimentation tank scum cleaning tasks.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A reciprocating surface scum cleaning device, for installation on a gantry (16) of a sedimentation tank, characterized in that: include, A sludge scraper (1) is used to move and is disposed on the water-facing side of the gantry (16). The direction of movement of the sludge scraper (1) is the same as the length direction of the gantry (16). Scraper (2), the scraper (2) is raised and lowered on the sludge scraper (1). After the scraper (2) is lowered, the sludge scraper (1) moves from the middle of the sedimentation tank to the outside, and is used to push the scum in the sedimentation tank to the edge of the sedimentation tank.

2. The reciprocating surface scum cleaning device according to claim 1, characterized in that: It also includes, The hoisting frame (3) is used to be set on one side of the gantry (16). There are multiple hoisting frames (3). All the hoisting frames (3) are arranged along the length direction of the gantry (16). The bottom of the hoisting frame (3) has a notch (6). The scraper (2) is located below the hoisting frame (3). Track (4), the track (4) passes through all the lifting frames (3) and is connected to the lifting frames (3), there are tracks (4) on both sides of the opening (6), and the sludge scraper (1) is moved between the tracks (4) on both sides; The lifting drive mechanism (5) is located between the tracks (4) on both sides. The upper end of the lifting drive mechanism (5) is connected to the sludge scraper (1), and the lower end of the lifting drive mechanism (5) is connected to the scraper (2). After the lifting drive mechanism (5) extends, it is used to drive the scraper (2) to descend.

3. The reciprocating surface scum cleaning device according to claim 2, characterized in that: It also includes, The drive shaft (7) is rotatably mounted on the sludge scraper (1). There are two drive shafts (7), which are arranged along the length direction of the track (4). The axial direction of the drive shaft (7) is perpendicular to the length direction of the track (4). The traveling wheel (8) is mounted on the drive shaft (7). There are traveling wheels (8) at both ends of the drive shaft (7). The lowest point of the traveling wheel (8) is located below the lowest point of the sludge scraper (1) and is in contact with the track (4).

4. The reciprocating surface scum cleaning device according to claim 3, characterized in that: It also includes, The walking drive mechanism (9) is mounted on the sludge scraper (1), and the output shaft of the walking drive mechanism (9) is connected to the drive shaft (7) in a transmission manner. Limit switches (10) are provided at both ends of the sludge scraper (1). The lever (11) is provided at both ends of the gantry (16). After the limit switch (10) touches the lever (11), the walking drive mechanism (9) rotates in the opposite direction to make the sludge scraper (1) move in the opposite direction from the edge of the sedimentation tank to the middle of the sedimentation tank.

5. The reciprocating surface scum cleaning device according to claim 2, characterized in that: It also includes a hoisting rod (12), the upper end of which is connected to the lower end of the lifting drive mechanism (5), and the lower end of which is connected to the scraper (2).

6. The reciprocating surface scum cleaning device according to claim 2, characterized in that: It also includes a support beam (13), which is disposed on the scraper (2) and located on the side of the scraper (2) away from the edge of the sedimentation tank. The length direction of the support beam (13) is the same as the length direction of the scraper (2). There are multiple support beams (13), and all the support beams (13) are arranged in the up-down direction.

7. The reciprocating surface scum cleaning device according to claim 6, characterized in that: It also includes reinforcing ribs (14), which are connected between two adjacent support beams (13) and are attached to the scraper (2). There are multiple reinforcing ribs (14), and all the reinforcing ribs (14) are arranged along the length direction of the support beams (13).

8. The reciprocating surface scum cleaning device according to claim 1, characterized in that: It also includes baffles (15), which are located at both ends of the scraper (2). One end of the baffle (15) is connected to the scraper (2), and the other end of the baffle (15) extends toward the scraper (2) near the edge of the sedimentation tank.

9. A reciprocating surface scum cleaning device according to claim 8, characterized in that: Both the scraper (2) and the baffle (15) have water passage holes.

10. A reciprocating surface scum cleaning device according to claim 8, characterized in that: The baffle (15) and the scraper (2) are detachably connected.

Images