Long-lasting sedimentation tank sludge scraping structure

Abstract

This application provides a long-lasting and durable sludge scraping structure for sedimentation tanks, including an inclined linear frame. A first scraper is provided at the lower end of the linear frame, with the lower end of the first scraper abutting against the inclined bottom wall of the sedimentation tank. Multiple bottom wheels are provided on one side of the first scraper, with the lower ends of the bottom wheels abutting against the inclined bottom wall. A lateral abutting wheel is also provided at the lower end of the linear frame, abutting against the inner wall of the sedimentation tank. Multiple connecting rods are also provided at the upper end of the linear frame, with hanging ropes on the connecting rods. The upper end of each hanging rope is used to connect a mobile trolley, which solves the problem of the sludge scraper in the sedimentation tank easily rubbing or colliding with the bottom and wall of the tank.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment, and in particular to a long-lasting and durable sludge scraping structure for sedimentation tanks. Background Technology

[0002] A sludge scraper is a machine used to remove sludge from riverbeds. It is used in large-diameter circular or annular sedimentation tanks in urban sewage treatment plants, waterworks, and industrial wastewater treatment plants to remove sludge settled at the bottom and skim off scum from the surface. A typical sludge scraper consists of a mobile trolley with a scraper plate structure connected to its lower end for cleaning sludge accumulated at the bottom of the sedimentation tank.

[0003] In existing technologies, during the continuous sludge scraping process, the scraper, made of materials such as rubber, is inherently flexible and easily bends, pressing tightly against the bottom of the tank. This results in excessive friction between the scraper and the cement tank bottom, reducing the scraper's lifespan. Furthermore, due to the precision requirements of sedimentation tank construction, the tank shape is often not perfectly circular. With the scraper suspended at the bottom, it oscillates under the influence of water flow during movement, making it difficult to maintain a stable circular motion along the tank's axis. This leads to the scraper easily colliding with the side walls of the sedimentation tank. Utility Model Content

[0004] This invention provides a durable sludge scraping structure for sedimentation tanks, which solves the problem of sludge scraping plates in sedimentation tanks easily rubbing or colliding with the bottom and walls of the tank.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a long-lasting and durable sedimentation tank sludge scraping structure, including an inclined linear frame, a first scraper at the lower end of the linear frame, the lower end of the first scraper abutting against the inclined bottom wall of the sedimentation tank, a plurality of bottom traveling wheels on one side of the first scraper, the lower ends of the bottom traveling wheels abutting against the inclined bottom wall, a lateral abutting wheel at the lower end of the linear frame, the lateral abutting wheel abutting against the inner wall of the sedimentation tank, and a plurality of connecting rods at the upper end of the linear frame, with hanging ropes on the connecting rods, the upper ends of each hanging rope being used to connect a mobile trolley.

[0006] In a preferred embodiment, the linear frame includes a frame plate, a first scraper is provided on one side of the frame plate, and a first pressure plate is provided on the side of the first scraper away from the frame plate.

[0007] In the preferred embodiment, a traveling wheel connecting frame is provided on the side of the frame away from the first scraper, and the bottom traveling wheel is located at the lower end of the traveling wheel connecting frame.

[0008] In the preferred embodiment, the walking wheel connecting frame is provided with a first flange plate, the first flange plate is provided with a first waist-shaped slot, the first waist-shaped slot is provided with a first locking bolt, the first locking bolt is threadedly connected to the frame plate, the upper end of the frame plate is provided with a horizontal plate, the horizontal plate is provided with a threaded first abutment bolt, one end of the first abutment bolt passes through the horizontal plate and abuts against the first flange plate.

[0009] In a preferred embodiment, a horizontal plate is provided at the upper end of the frame plate. One end of the horizontal plate abuts against a wheel connecting frame. A lateral abutting wheel is connected to one end of the abutting wheel connecting frame. The other end of the abutting wheel connecting frame is provided with a second flange plate. The second flange plate is provided with a second waist-shaped slot. A second locking bolt is provided in the second waist-shaped slot. The second locking bolt is threadedly connected to the horizontal plate. A protrusion is provided on the horizontal plate near the abutting wheel connecting frame. A threaded second abutting bolt is provided on the protrusion. One end of the second abutting bolt passes through the protrusion to abut against the second flange plate.

[0010] In a preferred embodiment, a second scraper is provided on the side of the frame away from the first scraper, the lower end of the second scraper is lower than the lower end of the first scraper, and a second pressing plate is provided on the side of the second scraper away from the frame.

[0011] In the preferred embodiment, the connecting rod is provided with a threaded telescopic rod, and the upper end of the telescopic rod is provided with a lifting lug.

[0012] The beneficial effects of this utility model are as follows: the use of bottom traveling wheels and side abutment wheels to support the bottom and wall of the sedimentation tank respectively, so that the originally suspended linear frame is stably supported, reducing the uncertainty of position during movement and avoiding excessive friction with the bottom and collision with the wall; the use of multiple suspension ropes to suspend the linear frame improves the adaptability to the sedimentation tank structure, and the scraper angle can be changed by controlling the length of each rope to adapt to the inclination angle of the bottom wall of the sedimentation tank; the bottom traveling wheel and side abutment wheel brackets adopt an adjustable structure, which can be finely adjusted to ensure good fit between the scraper and the sedimentation tank and reduce dead angles in sludge scraping. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a top view of the sedimentation tank.

[0015] Figure 2 This is a side view of the sludge scraper.

[0016] Figure 3 This is a partial view of the sludge scraping structure.

[0017] Figure 4 This is a cross-sectional view of the sludge scraper structure.

[0018] Figure 5 It is a slanted view of the mud scraping structure. Figure 1 .

[0019] Figure 6 It is a slanted view of the mud scraping structure. Figure 2 .

[0020] Figure 7 This is a schematic diagram of the telescopic rod connecting the rod.

[0021] Figure 8 This is a detailed diagram of the mud scraper structure.

[0022] Figure 9 This is a diagram of a double-scraper sludge scraper structure.

[0023] In the diagram: Sedimentation tank 1; Inclined bottom wall 101; Mobile trolley 2; Straight frame 3; Frame plate 301; Horizontal plate 302; Protrusion 303; Second abutment bolt 304; First scraper 4; First pressure plate 401; First bolt 402; Second scraper 403; Second pressure plate 404; Connecting rod 5; Lifting rope 501; Horizontal connecting rod 502; Lifting lug 503; Telescopic rod 504; Bottom traveling wheel 6; Traveling wheel connecting frame 601; First flange plate 602; First waist-shaped slot 603; First abutment bolt 604; First locking bolt 605; Side abutment wheel 7; Abutment wheel connecting frame 701; Second flange plate 702; Second waist-shaped slot 703; Second locking bolt 704. Detailed Implementation

[0024] Example 1:

[0025] like Figure 1-9 In this invention, a long-lasting sedimentation tank sludge scraping structure includes an inclined linear frame 3. The lower end of the linear frame 3 is provided with a first scraper 4, the lower end of which abuts against the inclined bottom wall 101 of the sedimentation tank 1. A plurality of bottom traveling wheels 6 are provided on one side of the first scraper 4, the lower ends of which abut against the inclined bottom wall 101. The lower end of the linear frame 3 is also provided with a lateral abutment wheel 7, which abuts against the inner wall of the sedimentation tank 1. The upper end of the linear frame 3 is also provided with a plurality of connecting rods 5, and a suspension rope 501 is provided on the connecting rods 5. The upper end of each suspension rope 501 is used to connect a mobile trolley 2.

[0026] A sludge collection tank is provided on one side of the bottom of the sedimentation tank 1, so the bottom wall can be set in an inclined state. The sludge collection tank is at the lower end. The sedimentation tank 1 has a ring structure. When the moving trolley 2 drives the straight frame 3 to scrape the sludge through the suspension rope 501, the sludge gathers towards the lower end of the inclined bottom wall 101 under the action of gravity and is eventually squeezed into the sludge collection tank.

[0027] The linear frame 3 is suspended by ropes 501, which is not a rigid connection, making it highly adaptable. The length of each rope 501 can be adjusted so that the tilt angle of the linear frame 3 matches the tilt angle of the inclined bottom wall 101. At the same time, since the linear frame 3 sinks under gravity and its lower end presses against the inclined bottom wall 101, it needs appropriate weight to prevent the linear frame 3 from tilting due to excessive resistance from the silt.

[0028] The first scraper 4 is made of rubber or other materials and has a certain degree of flexibility. Higher hardness rubber can be selected for greater scraping force. The bottom traveling wheel 6 acts as a limiter to ensure that the bottom end of the first scraper 4 just contacts the inclined bottom wall 101, avoiding excessive contact force between the first scraper 4 and the inclined bottom wall 101, which would lead to excessive friction, increase traction resistance, and accelerate the wear of the first scraper 4.

[0029] The linear frame 3 is equipped with a flange seat, which is installed on the linear frame 3 by bolts. The lower end of each connecting rod 5 is threaded into the flange seat. Then, the horizontal connecting rod 502 is welded between each connecting rod 5 to prevent individual connecting rods 5 from bending easily.

[0030] In a preferred embodiment, the linear frame 3 includes a frame plate 301, a first scraper 4 is provided on one side of the frame plate 301, and a first pressure plate 401 is provided on the side of the first scraper 4 away from the frame plate 301.

[0031] The first pressing plate 401, the first scraper 4, and the frame plate 301 are all provided with multiple through holes along the length direction, and multiple first bolts 402 are also provided. Each first bolt 402 passes through the through hole and clamps the first scraper 4 between the first pressing plate 401 and the frame plate 301 with a nut.

[0032] In the preferred embodiment, a walking wheel connecting frame 601 is provided on the side of the frame plate 301 away from the first scraper plate 4, and the bottom walking wheel 6 is located at the lower end of the walking wheel connecting frame 601.

[0033] The first scraper 4 is positioned on the water-facing side, while the bottom traveling wheel 6 is positioned on the back side, which reduces the wear of the bottom traveling wheel 6 and the risk of the wheel getting tangled.

[0034] In a preferred embodiment, the walking wheel connecting frame 601 is provided with a first flange plate 602, the first flange plate 602 is provided with a first waist-shaped slot 603, the first waist-shaped slot 603 is provided with a first locking bolt 605, the first locking bolt 605 is threadedly connected to the frame plate 301, the upper end of the frame plate 301 is provided with a horizontal plate 302, the horizontal plate 302 is provided with a threaded first abutment bolt 604, one end of the first abutment bolt 604 passes through the horizontal plate 302 and abuts against the first flange plate 602.

[0035] After loosening the first locking bolt 605 and the first abutment bolt 604, the vertical position of the walking wheel connecting frame 601 can be adjusted, and the height of the bottom walking wheel 6 can be adjusted to ensure that the first scraper 4 just contacts the inclined bottom wall 101.

[0036] In a preferred embodiment, a horizontal plate 302 is provided at the upper end of the frame plate 301. One end of the horizontal plate 302 abuts against a wheel connecting frame 701. A lateral abutting wheel 7 is connected to one end of the abutting wheel connecting frame 701. The other end of the abutting wheel connecting frame 701 is provided with a second flange plate 702. The second flange plate 702 is provided with a second waist-shaped slot 703. A second locking bolt 704 is provided in the second waist-shaped slot 703. The second locking bolt 704 is threadedly connected to the horizontal plate 302. A protrusion 303 is provided on the horizontal plate 302 near the abutting wheel connecting frame 701. A threaded second abutting bolt 304 is provided on the protrusion 303. One end of the second abutting bolt 304 passes through the protrusion 303 to abut against the second flange plate 702.

[0037] Loosening the second locking bolt 704 and the second abutting bolt 304 can adjust the lateral position of the abutting wheel connecting frame 701 and the lateral abutting wheel 7, thereby changing the lateral position of the straight frame 3 so that the first scraper 4 protruding from the end of the straight frame 3 can get as close as possible to the side wall of the sedimentation tank 1.

[0038] In the preferred embodiment, the connecting rod 5 is provided with a threaded telescopic rod 504, and the upper end of the telescopic rod 504 is provided with a lifting lug 503.

[0039] The extension length of the telescopic rod 504 can be changed by rotating the telescopic rod 504, thereby adjusting the angle and posture of the linear frame 3.

[0040] Example 2:

[0041] like Figure 9 A long-lasting and durable sludge scraping structure for a sedimentation tank includes an inclined linear frame 3. The lower end of the linear frame 3 is provided with a first scraper 4, the lower end of which abuts against the inclined bottom wall 101 of the sedimentation tank 1. A plurality of bottom traveling wheels 6 are provided on one side of the first scraper 4, the lower ends of which abut against the inclined bottom wall 101. The lower end of the linear frame 3 is also provided with a lateral abutment wheel 7, which abuts against the inner wall of the sedimentation tank 1. The upper end of the linear frame 3 is also provided with a plurality of connecting rods 5, and a suspension rope 501 is provided on the connecting rods 5. The upper end of each suspension rope 501 is used to connect a mobile trolley 2.

[0042] In a preferred embodiment, a second scraper 403 is provided on the side of the frame plate 301 away from the first scraper 4, the lower end of the second scraper 403 is lower than the lower end of the first scraper 4, and a second pressing plate 404 is provided on the side of the second scraper 403 away from the frame plate 301.

[0043] The second scraper 403 and the second pressure plate 404 are also provided with through holes along the length direction. Each first bolt 402 passes through the through hole and clamps the second scraper 403 between the second pressure plate 404 and the frame plate 301 with a nut.

[0044] The first scraper 4 is positioned on the water-facing side, and the second scraper 403 is located behind the first scraper 4. The first scraper 4 first contacts the silt accumulated on the inclined bottom wall 101 and removes one layer. Then, the second scraper 403, being further down, removes the next layer. Both the first scraper 4 and the first pressing plate 401 remove silt to a certain depth to avoid excessive resistance in a single scraping operation, which could lead to excessive bending and deformation of the first scraper 4 and accelerated wear.

[0045] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A long-lasting sedimentation tank mud scraping structure, characterized by: The system includes a linear frame (3) arranged at an incline. The lower end of the linear frame (3) is provided with a first scraper (4). The lower end of the first scraper (4) is attached to the inclined bottom wall (101) of the sedimentation tank (1). A number of bottom wheels (6) are provided on one side of the first scraper (4). The lower end of the bottom wheels (6) is attached to the inclined bottom wall (101). The lower end of the linear frame (3) is also provided with a lateral abutment wheel (7). The lateral abutment wheel (7) is attached to the inner wall of the sedimentation tank (1). The upper end of the linear frame (3) is also provided with a number of connecting rods (5). The connecting rods (5) are provided with a suspension rope (501). The upper end of each suspension rope (501) is used to connect to the mobile trolley (2).

2. The mud scraping structure for long duration sedimentation basin according to claim 1, wherein: The straight frame (3) includes a frame plate (301), a first scraper (4) is provided on one side of the frame plate (301), and a first pressure plate (401) is provided on the side of the first scraper (4) away from the frame plate (301).

3. The mud scraping structure for long duration sedimentation basin according to claim 2, wherein: A walking wheel connecting frame (601) is provided on the side of the frame plate (301) away from the first scraper (4), and the bottom walking wheel (6) is located at the lower end of the walking wheel connecting frame (601).

4. The long-lasting sedimentation tank mud scraping structure according to claim 3, characterized in that: The traveling wheel connecting frame (601) is provided with a first flange plate (602), the first flange plate (602) is provided with a first waist-shaped slot (603), the first waist-shaped slot (603) is provided with a first locking bolt (605), the first locking bolt (605) is threadedly connected to the frame plate (301), the upper end of the frame plate (301) is provided with a horizontal plate (302), the horizontal plate (302) is provided with a threaded first abutment bolt (604), one end of the first abutment bolt (604) passes through the horizontal plate (302) and abuts against the first flange plate (602).

5. The long-lasting sedimentation tank mud scraping structure according to claim 2, characterized in that: A horizontal plate (302) is provided at the upper end of the frame plate (301). One end of the horizontal plate (302) is abutted against the wheel connecting frame (701). A side abutting wheel (7) is connected to one end of the abutting wheel connecting frame (701). The other end of the abutting wheel connecting frame (701) is provided with a second flange plate (702). The second flange plate (702) is provided with a second waist-shaped slot (703). A second locking bolt (704) is provided in the second waist-shaped slot (703). The second locking bolt (704) is threadedly connected to the horizontal plate (302). A protrusion (303) is provided on the horizontal plate (302) near the abutting wheel connecting frame (701). A threaded second abutting bolt (304) is provided on the protrusion (303). One end of the second abutting bolt (304) passes through the protrusion (303) to abut against the second flange plate (702).

6. The long-lasting sedimentation tank mud scraping structure according to claim 2, characterized in that: A second scraper (403) is provided on the side of the frame plate (301) away from the first scraper (4). The lower end of the second scraper (403) is lower than the lower end of the first scraper (4). A second pressing plate (404) is also provided on the side of the second scraper (403) away from the frame plate (301).

7. The long-lasting sedimentation tank mud scraping structure according to claim 1, characterized in that: The connecting rod (5) is provided with a threaded telescopic rod (504), and the upper end of the telescopic rod (504) is provided with a lifting lug (503).

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