A frame-type truss scraper

Abstract

This utility model discloses a frame-type truss sludge scraper, including a frame structure truss spanning a sedimentation tank, a track located at the top of the sedimentation tank wall, scrapers installed at the bottom of the truss, a drive component for moving the truss along the track, and a central platform. The central platform includes a turntable and a base. The sedimentation tank has a central support, and the base is installed on the central support. The turntable is rotatably installed on the base. At least three anti-deviation wheels are evenly distributed between the base and the turntable. The turntable is fixedly connected to the truss. The drive component includes a traveling trolley and an integrated control system. The integrated control system is located on the central axis of the base, and the traveling trolley is located at the far end of the truss. The integrated control system drives the traveling trolley to move along the track. The truss provided by this utility model has high strength, stable equipment operation, strong anti-deviation capability, high drive efficiency, and low energy consumption. The central platform can be repaired without stopping the machine, and vulnerable parts can be replaced individually, resulting in low maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of sewage treatment equipment, and more specifically to a frame-type truss sludge scraper. Background Technology

[0002] Sludge scrapers are commonly used solid-liquid separation devices in sedimentation tanks and thickening tanks of wastewater treatment plants. Their main function is to scrape the sludge deposited at the bottom of the tank to a sludge collection pit or sludge discharge port. Most existing track-mounted sludge scrapers adopt a structure of crossbeams and vertical mounting rods, with the scraper blades installed at the bottom of the vertical mounting rods.

[0003] However, in the Yellow River system and other rivers with high sediment content, a high-density, highly adhesive layer of sediment easily forms at the bottom of sedimentation tanks. Under such conditions of high sediment deposition, existing sludge scrapers, due to their fragile structure, are prone to breakage of the rotating beam, scraper, and vertical mounting rods. These structurally fragile scrapers can only handle suspended sludge, and overloading them can cause the drive mechanism to alarm and fail due to torque issues.

[0004] Circular sedimentation tanks typically employ a semi-bridge type scraper. One end of the scraper is rotatably mounted on a central support within the tank. During rotation, the scraper encounters resistance, easily causing the crossbeam to deviate from the center of rotation, resulting in poor operational stability. After a period of use, the equipment will experience significant wear and tear, and may even malfunction due to severe eccentricity. Some scrapers have the drive mechanism mounted on a crossbeam above the central support, but for longer crossbeams or when encountering layers of silt with high resistance, the required driving power is greater, leading to higher energy consumption. Furthermore, during routine maintenance, this type of scraper requires complete shutdown, disrupting daily operations. Summary of the Invention

[0005] To address the aforementioned issues, this invention provides a frame-type truss scraper that operates smoothly, exhibits strong anti-deviation capabilities, high driving efficiency, and low energy consumption.

[0006] According to one aspect of the present invention, a frame-type truss scraper is provided for scraping the sludge layer at the bottom of a sedimentation tank, the scraper comprising: The truss is a frame structure truss with an outer frame and multiple diagonal braces inside the outer frame. The track, located at the top of the sedimentation tank wall, is used to support and guide the rotation of the truss; The central platform includes a turntable and a base. The sedimentation tank is provided with a central support for the tank body, and the base is installed on the central support for the tank body. The turntable is rotatably installed on the base. At least three anti-deviation wheels are evenly distributed between the base and the turntable. The turntable is fixedly connected to a truss. A scraper, which is installed at the bottom of the truss; A drive component, which is mounted on the truss and drives the truss to move along the track.

[0007] Therefore, the sludge scraper adopts a frame structure with internal diagonal bracing to increase the overall strength. There are anti-deviation wheels between the base and the turntable. When the truss rotates, the anti-deviation wheels between the turntable and the base can guide the truss to ensure that it does not deviate from the center, thus improving its anti-deviation ability. Even when dealing with high-density, highly adhesive mud and sand layers, it can operate smoothly.

[0008] In some embodiments, the truss spans the sedimentation tank. The driving components include a traveling trolley and an integrated control system. The base has a central axis, and the integrated control system is located on the central axis of the base. The traveling trolley is located at the far end of the truss, and the integrated control system drives the traveling trolley to move along the track. Thus, the truss spanning the sedimentation tank can be a full-bridge structure symmetrically arranged relative to the central support of the tank, or it can be a structure where one side extends above the track and the other side is slightly shorter and does not reach the track at the top of the tank, but it needs to be slightly longer to improve the stability of the truss during operation. The slightly shorter side also has a scraper to assist in scraping sludge. The integrated control system highly integrates power supply and signal control, and the control part is separated from the traveling trolley. The integrated control system is located above the central support of the tank to prevent sludge from entering and improve safety performance.

[0009] In some embodiments, the traveling trolley includes a motor, a driving wheel, a driven wheel, and a traveling wheel. The output shaft of the motor is connected to the driving wheel, and the driving wheel and driven wheel are driven by gear meshing or chain drive. The traveling wheel and driven wheel are coaxially connected, and the traveling wheel is located on a track. Thus, the motor drives the driving wheel, the driving wheel drives the driven wheel to rotate, and the traveling wheel rotates with the driven wheel. The traveling wheel drives the truss to rotate on the track. This traveling trolley directly acts on the far outer edge of the truss, reducing force transmission loss, increasing torque reserve, and preventing jamming due to excessive mud and sand resistance.

[0010] In some implementations, a working bridge is provided on the truss between the integrated control system and the traveling trolley, with handrails on both sides of the working bridge. This allows the integrated control system and the traveling trolley to be separated, enabling independent maintenance of the central platform without stopping the entire system.

[0011] In some embodiments, four anti-deviation wheels are provided, distributed at 90-degree intervals relative to the circumference of the base. Each anti-deviation wheel has a short shaft at its center, with both ends of the short shaft mounted on a turntable. A wear-resistant ring is provided around the outer edge of the base, abutting against the anti-deviation wheels. Therefore, this application uses four anti-deviation wheels to facilitate rapid positioning during production, reduce errors, and prevent direct contact between the turntable and the base. If the wear-resistant ring or the anti-deviation wheels wear out, they can be replaced individually, reducing maintenance costs and shortening the repair cycle.

[0012] In some embodiments, one end of the scraper is hinged to a truss, which has multiple angle adjustment holes, and the other end of the scraper can be selectively mounted in one of these holes. This allows for angle adjustment of the scraper, facilitating fine-tuning and improving product applicability.

[0013] In some implementations, multiple vertical supports are spaced apart within the outer frame, with each diagonal brace connecting to the middle of the vertical support and the outer frame at its two ends. Thus, the multiple vertical supports divide the long outer frame into several smaller sections, each supported by multiple diagonal braces, thereby increasing the truss's strength.

[0014] Compared with existing technologies, the advantages of this utility model are as follows: This utility model adopts a frame-type truss structure. The outer frame of the truss is divided by multiple vertical supports and internally supported by multiple diagonal braces. This frame-type truss structure has high strength. Multiple anti-deviation wheels are evenly distributed between the base of the central platform and the turntable. During the operation of the sludge scraper, the anti-deviation wheels guide the turntable and the base to ensure that the truss does not deviate from the center, resulting in strong anti-deviation ability and stable equipment operation. It is suitable for solving problems such as large-span sedimentation tanks, high sludge density, and strong sludge adhesion. The rotation of the truss is controlled by an integrated control system located on the central platform and a traveling trolley at the far end of the truss. The integrated control system has stable signal transmission, and the traveling trolley has high driving efficiency, which can increase torque reserve and save energy. The sludge scraper has a reasonable structural design, convenient scraper adjustment, and easy replacement of vulnerable parts such as scrapers and anti-deviation wheels, avoiding long-term downtime for maintenance. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of one embodiment of a frame-type truss sludge scraper according to the present invention; Figure 2 This is a top view of one embodiment of a frame-type truss scraper according to the present invention. Figure 3 yes Figure 1 Enlarged view of section A in the middle; Figure 4 yes Figure 1 Enlarged view of section B; Figure 5 yes Figure 2 Enlarged view of section C. Detailed Implementation

[0016] The present invention will be further described below with reference to specific embodiments.

[0017] like Figure 1 and 2 As shown, the frame-type truss sludge scraper of one embodiment of the present invention is used to scrape the sludge layer at the bottom of the sedimentation tank 100, and is applicable to sedimentation tanks 100 with large spans, high sludge density, and strong sludge adhesion.

[0018] The sludge scraper includes a track 2, a truss 1, a central platform 3, scrapers 4, and a drive unit. The track 2 is fixedly installed on the top of the sedimentation tank 100 wall to support and guide the operation of the truss 1. The scrapers 4 are installed at the bottom of the truss 1. Figure 3 As shown, the central platform 3 includes a turntable 31 and a base 32. A concrete central support 101 is cast at the center of the sedimentation tank 100. The base 32 is fixedly installed on top of the central support 101. The turntable 31 is rotatably mounted on the base 32. At least three anti-deviation wheels 33 are evenly distributed between the base 32 and the turntable 31. The turntable 31 is fixedly connected to the truss 1. A drive unit is installed on the truss 1 and drives the truss 1 to move along the track 2. During operation, the turntable 31 rotates with the truss 1, and the turntable 31 and the anti-deviation wheels 33 rotate relative to the base 32. When the truss 1 rotates, the anti-deviation wheels 33 guide the turntable 31 and the base 32, ensuring that the truss 1 does not deviate from the center, improving its anti-deviation capability, and allowing for smooth operation even when handling high-density, highly adhesive silt layers.

[0019] In this embodiment, as Figure 5 As shown, there are four anti-deviation wheels 33, which are distributed at 90-degree intervals on the circumference of the base 32. Each anti-deviation wheel 33 has a short shaft 331 at its center, with both ends of the short shaft 331 mounted on the turntable 31. A wear-resistant ring 322 is installed around the outer edge of the base 32, and the wear-resistant ring 322 abuts against the anti-deviation wheels 33. Using four anti-deviation wheels 33 facilitates quick positioning during production, reducing errors. During equipment operation, the turntable 31 and base 32 do not directly contact each other. If the wear-resistant ring 322 or the anti-deviation wheels 33 wear out, they can be replaced individually, reducing maintenance costs and shortening the maintenance cycle.

[0020] The truss 1 needs to span the entire sedimentation tank 100 during one rotation. The truss 1 can be a full-bridge truss, meaning it is symmetrically positioned relative to the central support 101 of the tank. The truss 1 can extend to the top of the track 2 on one side, and be slightly shorter on the other side, not reaching the top of the track 2, but still needing to be longer. The truss 1 uses the central platform 3 as its fulcrum. This improves the stability of the truss 1 during operation. The shorter side also has a scraper 4 to assist in scraping sludge. The truss 1 is a frame structure. Specifically, the truss 1 has an outer frame 11, within which multiple vertical supports 13 are spaced apart. The two ends of diagonal braces 12 connect the middle of the vertical supports 13 to the outer frame 11, respectively. The multiple vertical supports 13 divide the long outer frame 11 into several small areas, each supported by multiple diagonal braces 12, increasing the strength of the truss 1 and extending the service life of the equipment. The truss 1 can also be connected to the flow stabilizing tank 15, which is located on the upper periphery of the central support 101 of the pool.

[0021] The drive components include the traveling trolley and the integrated control system. For example... Figure 3 As shown, the base 32 has a vertically upward central shaft 321, which passes through the turntable 31 and extends upward. The integrated control system is fixedly installed on the central shaft 321 of the base 32. The traveling trolley is located at the far end of the truss 1, that is, on the edge of the truss 1 above the track 2. The integrated control system drives the traveling trolley to move along the track 2. The integrated control system highly integrates power supply and signal control, and the control part is set separately from the traveling trolley. A working bridge is installed on the truss 1 between the integrated control system and the traveling trolley, and there are handrails on both sides of the working bridge. When it is necessary to inspect the central platform 3, the machine does not need to be stopped, and the central platform 3, truss 1 and other parts can be inspected separately. The integrated control system is located above the central support 101 of the pool body, and is covered by a dust cover 521. The bottom of the dust cover 521 is fixed to the turntable 31 with screws, which can prevent mud and sand from entering and improve safety performance.

[0022] like Figure 4 As shown, the traveling trolley includes a motor 511, a driving wheel 512, a driven wheel 513, and a traveling wheel 514. The output shaft of the motor 511 is connected to the driving wheel 512. The driving wheel 512 and the driven wheel 513 are driven by gear meshing, or by chain connection. The traveling wheel 514 is coaxially connected to the driven wheel 513 and can rotate synchronously. The traveling wheel 514 is located on the track 2. When the motor 511 drives the driving wheel 512, the driving wheel 512 drives the driven wheel 513 to rotate, and the traveling wheel 514 rotates with the driven wheel 513, causing the truss 1 to rotate on the track 2. This traveling trolley directly acts on the far outer edge of the truss 1, reducing force transmission loss, increasing torque reserve, and preventing jamming due to excessive mud and sand resistance.

[0023] To improve product applicability and facilitate fine-tuning, the angle of the scraper 4 is adjustable. Specifically, one end of the scraper 4 is rotatably hinged to the truss 1, and the hinged end can be located on the side near the central support 101 of the pool body. The far end of the truss 1 has multiple angle adjustment holes 14. Figure 1 As shown), the other end of the scraper 4 can be selectively installed in one of the angle adjustment holes 14 to change the installation angle of the scraper 4.

[0024] This utility model adopts a frame-type truss 1. The outer frame 11 of the truss is divided by multiple vertical supports 13 and internally supported by multiple diagonal braces 12. The frame-type truss 1 has high strength. Multiple anti-deviation wheels 33 are evenly distributed between the base 32 of the central platform 3 and the turntable 31. When the sludge scraper is in operation, the anti-deviation wheels 33 guide the turntable 31 and the base 32 to ensure that the truss 1 does not deviate from the center, has strong anti-deviation ability, and the equipment operates smoothly. It is suitable for solving the problems of large-span sedimentation tanks 100 with high sludge density and strong sludge adhesion. The rotation of the truss 1 is controlled by an integrated control system located on the central platform 3 and a traveling trolley at the far end of the truss 1. The integrated control system has stable signal transmission, and the traveling trolley has high driving efficiency, which can increase torque reserve and save energy. The sludge scraper has a reasonable structural design, the scraper 4 is easy to adjust, and the scraper 4, anti-deviation wheels 33 and other vulnerable parts are easy to replace, avoiding long-term downtime for maintenance.

[0025] The above descriptions are merely some embodiments of this utility model. It should be noted that those skilled in the art can make other modifications and improvements without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A frame-type truss sludge scraper for scraping the sludge layer at the bottom of a sedimentation tank, characterized in that, include: Truss (1), the truss (1) is a frame structure truss, the truss (1) has an outer frame (11), and the outer frame (11) has multiple diagonal braces (12). Track (2), which is located on the top of the sedimentation tank wall, is used to support and guide the rotation of the truss (1); The central platform (3) includes a turntable (31) and a base (32). The sedimentation tank is provided with a central support (101). The base (32) is installed on the central support (101). The turntable (31) is rotatably installed on the base (32). At least three anti-deviation wheels (33) are evenly distributed between the base (32) and the turntable (31). The turntable (31) is fixedly connected to the truss (1). Scraper (4), said scraper (4) is installed at the bottom of truss (1); A drive component is mounted on the truss (1) and drives the truss (1) to move along the track (2).

2. The frame-type truss scraper according to claim 1, characterized in that, The truss (1) spans the sedimentation tank. The driving component includes a traveling trolley (51) and an integrated control system (52). The base (32) has a central axis (321). The integrated control system (52) is located on the central axis (321) of the base (32). The traveling trolley (51) is located at the far end of the truss (1). The integrated control system (52) drives the traveling trolley (51) to move along the track (2).

3. The frame-type truss scraper according to claim 2, characterized in that, The traveling trolley (51) includes a motor (511), a drive wheel (512), a driven wheel (513), and a traveling wheel (514). The output shaft of the motor (511) is connected to the drive wheel (512). The drive wheel (512) and the driven wheel (513) are driven by a tooth meshing or chain drive. The traveling wheel (514) and the driven wheel (513) are coaxially connected. The traveling wheel (514) is located on the track (2).

4. The frame-type truss scraper according to claim 2, characterized in that, A working bridge (6) is provided on the truss (1) between the integrated control system (52) and the traveling trolley (51), and handrails (61) are provided on both sides of the working bridge (6).

5. The frame-type truss scraper according to claim 1, characterized in that, The anti-deviation wheel (33) is provided in four parts, and the four anti-deviation wheels (33) are distributed at 90-degree intervals on the circumference of the base (32). The center of the anti-deviation wheel (33) has a short shaft (331), and the two ends of the short shaft (331) are installed on the turntable (31). The outer edge of the base (32) is provided with a wear-resistant ring (322), and the wear-resistant ring (322) abuts against the anti-deviation wheel (33).

6. The frame-type truss scraper according to claim 1, characterized in that, One end of the scraper (4) is hinged to the truss (1), and the truss (1) is provided with multiple angle adjustment holes (14). The other end of the scraper (4) can be selectively installed in one of the angle adjustment holes (14).

7. The frame-type truss scraper according to claim 1, characterized in that, Multiple vertical supports (13) are distributed at intervals inside the outer frame (11), and the two ends of the diagonal brace (12) are respectively connected to the middle position of the vertical support (13) and the outer frame (11).

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