Chain type mud scraper

Abstract

The utility model relates to the field of sewage treatment equipment discloses a chain type mud scraper, including sewage pool, the front end fixedly connected with motor of sewage pool, the drive end fixedly connected with driving shaft of motor, the left and right ends fixedly connected with main sprocket of driving shaft, a plurality of driven sprocket are connected with a plurality of driving sprocket through chain of main sprocket, the inside of a plurality of driven sprocket is provided with ball bearing, the similar side of two chain is all fixedly connected with a plurality of connecting plates, the left and right ends fixedly connected with support column of sewage pool, the similar side of a plurality of connecting plates is provided with scraper assembly, the bottom side of chain upper end is provided with adjusting assembly. In the utility model, the rubber strip and the scraper are slidably connected, and are fixed with the rotating plate bolt, so that the worn rubber strip and scraper can be quickly replaced, the mud guide plate cooperates with the rubber strip guide port, assists the scraper to run along the fixed track, reduces the mud deviation, and improves the mud efficiency and stability.

Description

Technical Field

[0001] This utility model relates to the field of sewage treatment equipment, and in particular to a chain-type sludge scraper. Background Technology

[0002] Sludge scrapers are the main equipment for sewage and sludge treatment. They are widely used in urban and rural environmental sewage and sludge treatment industries. The sedimentation tanks where sludge scrapers are installed are generally made of concrete. The bottom of the sedimentation tank is equipped with a sludge trough. Sewage and sludge enter the sedimentation tank and are either settled by gravity or concentrated with chemicals, so that the upper part is clear water and the lower part is settled sludge slurry. The sludge scraper can push the settled sludge slurry to the sludge trough through the scraper blades and then discharge it. The clear water is discharged from the top of the sedimentation tank, thus achieving the purpose of separating sludge and clear water.

[0003] Because wear parts such as scrapers and rubber strips are tightly connected to the main structure, replacement requires interrupting operations and disassembling multiple related components. This not only increases labor costs but also reduces wastewater treatment efficiency due to prolonged downtime. Furthermore, scrapers lacking guide limits are prone to wobbling during operation, resulting in incomplete sludge scraping and leaving a large amount of sludge at the bottom of the sewage tank. Additionally, the chain tension adjustment mechanism is outdated; traditional manual adjustment is slow to respond and cannot adapt to dynamic tension changes during equipment operation. An overly loose chain causes scraper jamming, while an overly tight chain accelerates wear on the chain and sprockets, shortening the equipment's lifespan. To address these technical problems, this application proposes a chain-type sludge scraper. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a chain-type sludge scraper, which aims to solve the problem of long replacement time required for vulnerable parts in existing technologies.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A chain-type sludge scraper includes a sewage tank. A motor is fixedly connected to the front end of the sewage tank. A drive shaft is fixedly connected to the drive end of the motor. Main sprockets are fixedly connected to the left and right ends of the drive shaft. Multiple driven sprockets are connected to the main sprockets via chains. Ball bearings are installed inside the multiple driven sprockets. Multiple connecting plates are fixedly connected to adjacent sides of two chains. Support columns are fixedly connected to the left and right ends of the sewage tank. Scraper assemblies are installed on adjacent sides of the multiple connecting plates. An adjustment assembly is installed on the bottom side of the upper end of the chain. The scraper assembly includes a connecting scraper, which is bolted to the connecting plate. A scraper is slidably connected to the top center of the connecting scraper, and a rubber strip is slidably connected to the bottom end of the scraper. The adjusting assembly includes an adjusting rod, with locking blocks fixedly connected to both ends of the adjusting rod. A connecting adjusting rod is rotatably connected to the top of the locking blocks, and an adjusting screw is threadedly connected to the top of the connecting adjusting rod. Multiple rotating plates are rotatably connected to the top of the scraper, and the rotating plates are bolted to the top of the connecting scraper. Blocks are provided at both ends of the adjusting screw. Two bevel gears are provided at the left end of the adjusting screw. One bevel gear is fixedly connected to the adjusting screw, and the two bevel gears mesh with each other. A support column is rotatably connected to the adjusting screw. A bearing end cover is slidably connected to the outer side of the driven sprocket, and a sealing ring is fixedly connected to the center of the bearing end cover. A support rod is provided on the inner ring of the ball bearing.

[0006] Furthermore, two sludge scraping guide plates are fixedly connected to the bottom side inside the sewage tank, two upper chain guide plates are fixedly connected to the rear end inside the sewage tank, and two lower chain guide plates are fixedly connected to the bottom side inside the sewage tank. The two lower chain guide plates are located on opposite sides of the two sludge scraping guide plates.

[0007] Furthermore, the rubber strip has two guide openings in the middle, and the guide openings are slidably connected to the mud scraper guide plate.

[0008] This utility model has the following beneficial effects: 1. In this utility model, the rubber strip and the scraper are slidably connected and fixed with the rotating plate bolts, which allows for quick replacement of worn rubber strips and scrapers. The sludge scraping guide plate cooperates with the rubber strip guide opening to assist the scraper in running along a fixed trajectory, reducing sludge scraping deviation and improving sludge scraping efficiency and stability.

[0009] 2. In this utility model, power transmission is achieved through bevel gear transmission and threaded connection. A small motor drives the adjusting screw to rotate, which in turn drives the connecting adjusting rod and adjusting rod to rise and fall, precisely adjusting the chain tension, avoiding slippage due to excessive looseness or wear due to excessive tightness, extending the equipment life and improving operational reliability. Attached Figure Description

[0010] Figure 1 This is a perspective view of a chain-type sludge scraper proposed in this utility model; Figure 2 This is a schematic diagram of the sewage tank structure of a chain scraper proposed in this utility model; Figure 3 This is a schematic diagram of the lower chain guide plate structure of a chain-type sludge scraper proposed in this utility model; Figure 4 This is a schematic diagram of the connecting scraper structure of a chain-type sludge scraper proposed in this utility model; Figure 5 This is a schematic diagram of the driven sprocket structure of a chain-type sludge scraper proposed in this utility model.

[0011] Legend: 1. Sewage tank; 2. Support column; 3. Bevel gear; 4. Chain; 5. Drive shaft; 6. Motor; 7. Adjusting rod; 8. Connecting adjusting rod; 9. Adjusting screw; 10. Main sprocket; 11. Driven sprocket; 12. Lower chain guide plate; 13. Upper chain guide plate; 14. Sludge scraper guide plate; 15. Connecting scraper; 16. Connecting plate; 17. Rotating plate; 18. Rubber strip; 19. Scraper; 20. Ball bearing; 21. Bearing end cover; 22. Sealing ring. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] Reference Figure 2-4 This utility model provides an embodiment of a chain-type sludge scraper, comprising a sewage tank 1, a motor 6 fixedly connected to the front end of the sewage tank 1, a drive shaft 5 fixedly connected to the drive end of the motor 6, main sprockets 10 fixedly connected to the left and right ends of the drive shaft 5, multiple driven sprockets 11 connected to the main sprockets 10 via chains 4, ball bearings 20 disposed inside the multiple driven sprockets 11, multiple connecting plates 16 fixedly connected to adjacent sides of two chains 4, support columns 2 fixedly connected to the left and right ends of the sewage tank 1, scraper assemblies disposed on adjacent sides of the multiple connecting plates 16, an adjustment assembly disposed on the bottom side of the upper end of the chain 4, the scraper assembly including a connecting scraper 15, the connecting scraper 15 and the connecting plates 16 being bolted together, and the top center of the connecting scraper 15 being slidably connected. A scraper 19 is attached, and a rubber strip 18 is slidably connected to the bottom end of the scraper 19. Two sludge scraping guide plates 14 are fixedly connected to the bottom side inside the sewage tank 1. Two upper chain guide plates 13 are fixedly connected to the rear end inside the sewage tank 1. Two lower chain guide plates 12 are fixedly connected to the bottom side inside the sewage tank 1. The two lower chain guide plates 12 are located on opposite sides of the two sludge scraping guide plates 14. Multiple rotating plates 17 are rotatably connected to the top of the scraper 19. The rotating plates 17 are bolted to the top side of the connecting scraper 15. A bearing end cover 21 is slidably connected to the outside of the driven sprocket 11. A sealing ring 22 is fixedly connected to the middle of the bearing end cover 21. A support rod is provided on the inner ring of the ball bearing 20. Two guide holes are opened in the middle of the rubber strip 18. The guide holes are slidably connected to the sludge scraping guide plates 14.

[0014] Specifically, starting the motor 6 causes the drive shaft 5 and the main sprockets 10 at both ends to rotate, making the chain 4 work. The driven sprocket 11 rotates with the chain 4 due to meshing, which drives the rubber strip 18 of the scraper assembly to work, sending the sludge into the bottom of the sewage tank 1. The rubber strip 18 can be quickly replaced because it is slidably connected to the scraper 19. The scraper 19 is threadedly connected to the connecting scraper 15 through the rotating plate 17. The protrusion at the bottom of the connecting scraper 15 abuts against the scraper 19 to enhance stability. The cooperation between the rubber strip 18 and the sludge guide plate 14, along with the multiple guide plates assisting the chain 4 in running, makes the overall operation stable.

[0015] Reference Figure 1 , Figure 2 and Figure 5 The adjustment assembly includes an adjustment rod 7, with locking blocks fixedly connected to both ends of the adjustment rod 7. A connecting adjustment rod 8 is rotatably connected to the top of the locking blocks. An adjustment screw 9 is threadedly connected to the top of the connecting adjustment rod 8. Blocks are provided at both ends of the adjustment screw 9. Two bevel gears 3 are provided at the left end of the adjustment screw 9. One bevel gear 3 is fixedly connected to the adjustment screw 9, and the two bevel gears 3 are meshed. A support column 2 is rotatably connected to the adjustment screw 9. The adjustment assembly is driven by a small motor to rotate the bevel gear 3 connected to it. Because the two bevel gears 3 are meshing, the adjustment screw 9, which is fixedly connected to one of the bevel gears 3, will rotate. The adjustment screw 9 is threadedly connected to the connecting adjustment rod 8. Its rotation causes the connecting adjustment rod 8 to move up and down. The length of the connecting adjustment rod 8 is fixed, which allows the adjustment rod 7 to move up and down to adjust the tension of the chain 4. The support column 2 supports the adjustment screw 9. After the connecting adjustment rod 8 is installed, the blocking blocks at both ends of the adjustment screw 9 are fixed with screws or other means.

[0016] Working principle: The motor 6 is started, which drives the active shaft 5 and the main sprockets 10 at both ends to rotate, causing the chain 4 to work. The driven sprocket 11 rotates with the chain 4 due to meshing, which drives the rubber strip 18 of the scraper assembly to work. The sludge is sent to the bottom of the sewage tank 1. The rubber strip 18 can be quickly replaced because it is slidably connected to the scraper 19. The scraper 19 is threadedly connected to the connecting scraper 15 through the rotating plate 17. The protrusion at the bottom of the connecting scraper 15 abuts against the scraper 19 to enhance stability. The cooperation of the rubber strip 18 and the sludge guide plate 14, along with multiple guide plates to assist the chain 4 in running, makes the overall operation stable. The adjustment assembly is driven by a small motor to rotate the bevel gear 3 connected to it. Because the two bevel gears 3 mesh, the adjustment screw 9, which is fixedly connected to one of the bevel gears 3, will rotate. The adjustment screw 9 is connected to the connecting rod 8 by a thread. Its rotation causes the connecting rod 8 to move up and down. The length of the connecting rod 8 is fixed, which will cause the adjustment rod 7 to move up and down to adjust the tension of the chain 4. The support column 2 supports the adjustment screw 9. After the connecting rod 8 is installed, the blocking blocks at the left and right ends of the adjustment screw 9 are fixed with screws or other means.

[0017] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A chain-type sludge scraper, characterized in that, The system includes a sewage tank (1), a motor (6) is fixedly connected to the front end of the sewage tank (1), an active shaft (5) is fixedly connected to the drive end of the motor (6), a main sprocket (10) is fixedly connected to the left and right ends of the active shaft (5), a plurality of driven sprockets (11) are connected to the main sprockets (10) via a chain (4), ball bearings (20) are provided inside the plurality of driven sprockets (11), a plurality of connecting plates (16) are fixedly connected to the adjacent side of the two chains (4), a support column (2) is fixedly connected to the left and right ends of the sewage tank (1), a scraper assembly is provided to the adjacent side of the plurality of connecting plates (16), and an adjustment assembly is provided on the bottom side of the upper end of the chain (4). The scraper assembly includes a connecting scraper (15), which is bolted to the connecting plate (16). A scraper (19) is slidably connected to the top center of the connecting scraper (15), and a rubber strip (18) is slidably connected to the bottom end of the scraper (19). The adjustment assembly includes an adjustment rod (7), with locking blocks fixedly connected to both ends of the adjustment rod (7). A connecting adjustment rod (8) is rotatably connected to the top of the locking blocks. An adjustment screw (9) is threadedly connected to the top of the connecting adjustment rod (8). Multiple rotating plates (17) are rotatably connected to the top of the scraper (19). 7) The top side of the connecting scraper (15) is connected by bolts. Both ends of the adjusting screw (9) are provided with blocking blocks. The left end of the adjusting screw (9) is provided with two bevel gears (3). One bevel gear (3) is fixedly connected to the adjusting screw (9), and the two bevel gears (3) are meshed. The support column (2) is rotatably connected to the adjusting screw (9). The outer side of the driven sprocket (11) is slidably connected with a bearing end cover (21). The middle part of the bearing end cover (21) is fixedly connected with a sealing ring (22). The inner ring of the ball bearing (20) is provided with a support rod.

2. The chain-type sludge scraper according to claim 1, characterized in that: Two scraper guide plates (14) are fixedly connected to the bottom side inside the sewage tank (1), two upper chain guide plates (13) are fixedly connected to the rear end inside the sewage tank (1), and two lower chain guide plates (12) are fixedly connected to the bottom side inside the sewage tank (1). The two lower chain guide plates (12) are located on opposite sides of the two scraper guide plates (14).

3. A chain-type sludge scraper according to claim 2, characterized in that: The rubber strip (18) has two guide openings in the middle, and the guide openings are slidably connected to the mud scraper guide plate (14).

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