mud scraping assembly

Abstract

The utility model relates to the technical field of environmental protection equipment, concretely relates to a mud scraping subassembly, include: the mud scraping board of length extension, including the stainless steel square tube of inside hollow, and the both ends of stainless steel square tube are sealed state, set up in the both ends of mud scraping board's mobile guide pulley, the mobile guide pulley distributes in mud scraping board's two sides, the rotation axis of mobile guide pulley is with the length direction parallel of mud scraping board, the diameter of mobile guide pulley is greater than the width of mud scraping board, the mobile guide pulley slightly protrudes in the both ends of mud scraping board along its width direction.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection equipment technology, specifically to a sludge scraping component. Background Technology

[0002] In wastewater treatment processes, sedimentation tanks are the core structures for achieving solid-liquid separation, while chain plate scrapers, as key supporting equipment for sedimentation tanks, directly determine sludge removal efficiency and the total life-cycle cost of the equipment through their operational stability, corrosion resistance, and energy consumption.

[0003] Currently, conventional chain-plate sludge scrapers on the market are limited by structural design and material selection, and generally suffer from the following prominent technical defects in practical applications: 1. Conventional chain plate scrapers usually use non-metallic scraper blades such as fiberglass. When operating in the corrosive environment of sewage for a long time, they are prone to aging, corrosion and deformation, which shortens their service life. 2. During the movement of the scraper blade, both ends come into contact with the track through wear-resistant boots. The frictional resistance is relatively large, which can easily cause wear on the wear-resistant boots and the track, affecting the service life of the device and increasing the workload and material costs of maintenance. 3. Because the contact between the scraper and the track is a surface-to-surface friction, the frictional resistance is high, resulting in a large running tension of the chain. This can easily cause wear between the links and shorten the service life of the chain. The chain is also prone to breakage, which increases the operating load and consumes more electricity.

[0004] Therefore, there is an urgent need to propose a sludge scraping assembly to solve at least one of the above-mentioned problems. Utility Model Content

[0005] In view of this, at least one objective of this utility model is to provide a sludge scraping assembly to solve at least one technical problem existing in the current chain plate sludge scraper.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A mud scraper assembly, comprising: The longitudinally extending scraper blade includes an internally hollow stainless steel square tube, with both ends of the stainless steel square tube sealed. Movable guide wheels are disposed at both ends of the scraper blade, and the movable guide wheels are distributed on the front and rear sides of the scraper blade; the rotation axis of the movable guide wheels is parallel to the length direction of the scraper blade; the diameter of the movable guide wheels is greater than the width of the scraper blade; the movable guide wheels protrude slightly from both ends of the scraper blade along its width direction.

[0007] As an optional embodiment of this utility model, the scraper blade is provided with a plurality of auxiliary moving wheels, which are arranged along the length direction of the scraper blade; wherein, the rotation axis of the auxiliary moving wheels is parallel to the length direction of the scraper blade; the diameter of the auxiliary moving wheels is greater than the width of the scraper blade; and the auxiliary moving wheels protrude slightly from both ends of the scraper blade along its width direction.

[0008] As an optional solution of this utility model, multiple auxiliary moving wheels are staggered along the length of the scraper blade and distributed on the front and rear sides of the scraper blade.

[0009] As an optional solution of this utility model, both ends of the scraper are fixedly connected to the chain via connecting accessories.

[0010] As an optional embodiment of this utility model, the connecting accessory is an L-shaped connecting structure, which has parallel double bottom plates and connecting wing plates; the double bottom plates are respectively fixedly connected to the left and right sides of a sub-chain of the chain; the connecting wing plates are fixedly connected to the front and rear sides of the scraper plate by bolts.

[0011] As an optional embodiment of this utility model, the connecting accessory includes left and right L-shaped connecting plates; the bottom plates of the left and right L-shaped connecting plates are sandwiched between the two sides of a sub-chain to form a double bottom plate, which is fixedly connected to the sub-chain; the vertical plates of the left and right L-shaped connecting plates are stacked to form connecting wing plates, and the scraper is fixedly connected by multiple bolts.

[0012] As an optional solution of this utility model, a buffer pad with a thickness of more than 5mm is also fixed between the connecting wing plate and the scraper plate.

[0013] As an optional solution of this utility model, the two ends of the sludge scraper are respectively provided with limiting wheels, the limiting wheels rotate around a vertical axis, the bearing track is restricted between the chain and the limiting wheels, and the limiting wheels are located between the bearing track and the pool wall; the distance between the limiting wheels and the side wall of the track is set to 3-5mm.

[0014] As an optional embodiment of this utility model, the two ends of the sludge scraper are provided with flexible side plates for contacting the pool wall.

[0015] As an optional embodiment of this utility model, it also includes a lip plate extending together with the scraper blade. The plurality of scraper blades are arranged in parallel and spaced apart on the chain, and at least one upper scraper blade is provided with a lip plate. The lip plate is fixed on the side of the scraper blade facing away from the bearing track.

[0016] The beneficial effects of this utility model are: 1. The sludge scraping component of this utility model has the characteristics of superior material, longer service life, more stable operation, lower energy consumption, and less maintenance workload, which is a great improvement over the traditional chain plate sludge scraper. 2. The sludge scraper assembly uses a rectangular stainless steel square tube with sealed ends as the scraper blade, making the scraper blade more suitable for use in sewage scenarios. It is not easy to corrode and has a longer service life. At the same time, since the stainless steel scraper blade is sealed at both ends, it will be subject to a large buoyancy when it is underwater, which will offset most of the running resistance caused by its own weight, resulting in less running resistance. 3. By setting auxiliary moving wheels in the middle of the scraper, it can adapt to wider pool shapes. When the scraper is lowered to the bottom of the pool, the middle can provide support, making the elastic deformation of the lip plate smaller. When the pool is wide and the scraper is also long, stainless steel reinforcing ribs can be set on the outside of the scraper to increase the strength of the scraper, so that the lip plate is not easily deformed, avoiding sludge residue at the bottom of the pool due to lip plate deformation, and ensuring the scraping effect in wide pool scenarios. 4. The wear-resistant boots on both sides of the scraper have been eliminated and replaced with movable guide wheels (traveling rollers). The scraper moves by moving the guide wheels on the support rail, thus changing the previous sliding friction to rolling friction. This greatly reduces the operating load and resistance, resulting in a smaller drive current and thus saving energy consumption. 5. By setting limit wheels on both sides of the stainless steel scraper, the scraper's running deflection can be kept within a limited range, ensuring that the scraper rollers always travel on the bearing track, thereby ensuring safe and stable operation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A three-dimensional structural diagram of a mud scraper assembly provided in one embodiment of this utility model; Figure 2 for Figure 1 A side view; Figure 3 for Figure 1 A top view; Figure 4 for Figure 1 Diagram showing the interaction with the chain; Figure 5 for Figure 1 Side view of the connecting attachment; Figure 6 for Figure 1 End structure view; Figure 7 for Figure 1Diagram showing the interaction with the chain and load-bearing track. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0020] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0021] like Figures 1 to 7 As shown, this utility model proposes a sludge scraping component 4, which can be applied to a chain plate sludge scraper device for sedimentation tanks. The following describes its specific implementation method in detail, taking into account the overall structure of the device and the synergistic relationship between its components.

[0022] The sludge scraping assembly 4 includes: a longitudinally extending scraper blade 41 comprising a hollow stainless steel square tube, with both ends of the stainless steel square tube sealed; movable guide wheels 412 disposed at both ends of the scraper blade 41, the movable guide wheels 412 being distributed on the front and rear sides of the scraper blade 41; the two movable guide wheels 412 being aligned front to back. The rotation axis of the movable guide wheels 412 is parallel to the length direction of the scraper blade 41.

[0023] A sprocket drive mechanism is fixedly installed on the two opposite walls of the sedimentation tank. This structure drives the chain 31 to form a cyclic transmission trajectory via a drive mechanism. The chain 31 rotates in a parallelogram shape, with the upper and lower long chain sides arranged parallel to each other in the horizontal direction to fit the horizontal section of the sedimentation tank, while the two shorter chain sides are arranged diagonally, connecting the upper and lower long sides to form a complete circulation path. The drive mechanism is located at the top of the sedimentation tank, near one corner of the parallelogram circulation trajectory, and provides power to the entire conveying structure by driving the sprocket rotation, ensuring stable transmission of the chain 31. The chain 31 can be made of plastic to ensure the synchronous transmission of the two chains 31, preventing the scraper 41 from deviating due to chain stretching or breakage, ensuring the precise and reliable operation of the entire scraping system, and providing transmission assurance for the stability of subsequent scraping actions.

[0024] Chains 31 are arranged in a closed loop on both sides of the sedimentation tank. Multiple scraper components 4 are fixed at intervals along the length of chain 31 and move synchronously with chain 31. The core component of the scraper component 4 is the scraper plate 41, which is made of hollow stainless steel square tube. The use of a rectangular cross-section stainless steel square tube with sealed ends makes the scraper plate 41 more suitable for wastewater use, less prone to corrosion, and with a longer service life. At the same time, because the stainless steel scraper plate 41 is sealed at both ends, it will be subject to greater buoyancy when it is underwater, which will offset most of the operating resistance caused by its own weight, resulting in lower operating resistance.

[0025] like Figures 4 to 6 As shown, the two ends of the scraper blade 41 are fixedly connected to the chains 31 on both sides via connecting accessories 5. The connecting accessories 5 adopt an L-shaped connection structure, with parallel double bottom plates 51 and fixed connecting wing plates 52. The double bottom plates 51 are respectively fixedly connected to the left and right sides of a sub-chain 311 of the chain 31 by bolts to ensure the stability of the connection; the connecting wing plates 52 are tightly connected to the front and rear sides of the scraper blade 41 by bolts, so that the scraper blade 41 maintains a stable posture when it moves with the chain 31.

[0026] Specifically, the connecting accessories include left and right L-shaped connecting plates 511; the bottom plates of the left and right L-shaped connecting plates 511 are sandwiched between the two sides of a sub-chain 311 to form a double bottom plate, which is fixedly connected to the sub-chain 311; the vertical plates of the left and right L-shaped connecting plates 511 are stacked to form a connecting wing plate 52, and are fixedly connected to the scraper plate 41 by multiple bolts.

[0027] To avoid rigid contact between the connecting vane 52 and the scraper 41, a buffer pad 8 with a thickness of more than 5 mm is fixed between the connecting vane 52 and the scraper 41. The buffer pad 8 is a thick rubber elastic pad, which allows the scraper to have a certain degree of torsion during operation without causing damage, and thus will not have additional side effects on the chain under extreme operating deviation.

[0028] In this embodiment, a plurality of auxiliary moving wheels 413 are evenly arranged along the length of the scraper blade 41. The rotation axis of the auxiliary moving wheels 413 is parallel to the length of the scraper blade 41, and their diameter is larger than the width of the scraper blade 41, and they protrude slightly beyond both ends of the scraper blade 41 along the width direction, such as within 5 mm. When a lip plate 43 is provided, the auxiliary moving wheels 413 can be slightly lower than the lip plate 43, such as within 5 mm. When the scraper blade 41 moves to the bottom of the sedimentation tank, the auxiliary moving wheels 413 contact the bottom of the tank and provide rolling support, converting the sliding friction between the scraper blade 41 and the bottom of the tank into rolling friction, reducing operating resistance and reducing wear between the scraper blade 41 and the bottom of the tank.

[0029] Each side wall of the sedimentation tank is also fixed with a single support track 2, which extends along the circulation path of the chain 31 to guide and support the scraper blade 41. Both ends of the scraper blade 41 are equipped with movable guide wheels 412, distributed on the front and rear sides of the scraper blade 41. The rotation axis of the movable guide wheels 412 is parallel to the length direction of the scraper blade 41, and their diameter is larger than the width of the scraper blade 41 and slightly protrudes from both ends of the scraper blade 41 along the width direction, such as within 5mm. When a lip plate 43 is present, the movable guide wheels 412 can protrude beyond the lip plate 43, or slightly below the lip plate 43, such as within 5mm. Relying on the conforming deformation of the flexible lip plate 43, the movable guide wheels 412 are supported on the tank bottom. When the scraper blade 41 moves above the support rail 2, the moving guide wheel 412 rolls and supports the support rail 2, and the rail supports the weight of the scraper blade 41. When the scraper blade 41 moves below the support rail 2 and moves horizontally, the guide wheel 412 rolls and supports the bottom of the pool, and the moving guide wheel 412 directly contacts the bottom of the pool and rolls and supports it, ensuring that the scraper blade 41 can move stably in different positions.

[0030] Both ends of the scraper blade 41 are equipped with limiting wheels 411, which rotate around a vertical axis and are positioned corresponding to the support track 2. The support track 2 is constrained between the chain 31 and the limiting wheels 411, with the limiting wheels 411 located between the support track 2 and the pool wall. A gap of 3-5 mm exists between the limiting wheels and the side wall of the track. During movement, the contact between the limiting wheels 411 and the side of the track restricts the lateral displacement of the scraper blade 41, ensuring that the moving guide wheel 412 always rolls along the track and preventing derailment. The auxiliary moving wheel 413, the moving guide wheel 412, and the limiting wheels 411 are all made of special wear-resistant rubber, which is not easily worn and has a longer service life.

[0031] Flexible side plates 42 are also connected to both ends of the scraper 41. The flexible side plates 42 are made of wear-resistant elastic materials such as polyurethane. Their outer side is in close contact with the inner wall of the sedimentation tank, which can fill the gap between the scraper 41 and the tank wall, prevent sludge from leaking from the side, and improve the thoroughness of scraping.

[0032] The sludge scraping assembly 4 also includes a lip plate 43 extending along the scraper plate 41. Multiple scraper plates 41 are distributed parallel to each other along the chain 31. At least one scraper plate 41 has a lip plate 43 fixedly installed on its bottom (i.e., the side facing away from the support track), which is in close contact with the bottom wall of the sedimentation tank. By setting an auxiliary moving wheel 413 in the middle of the scraper plate 41, it can adapt to a wider tank shape. When the scraper plate 41 is lowered to the bottom of the tank, the middle can provide support, making the elastic deformation of the lip plate 43 smaller. When the tank is wide and the scraper plate 41 is also long, stainless steel reinforcing ribs can be set on the outside of the scraper plate 41 to increase the strength of the scraper plate 41, so that the lip plate 43 is not easily deformed, avoiding sludge residue at the bottom of the tank due to deformation of the lip plate 43, and ensuring the sludge scraping effect in wide tank scenarios.

[0033] When the sedimentation tank chain scraper is in operation, the drive mechanism drives the chain 31 of the sprocket transmission mechanism to circulate along a parallelogram trajectory. The scraping assembly 4 follows the chain 31 to complete underwater scraping, tank bottom movement, and rising and resetting actions in sequence. During the underwater scraping stage, the sealed stainless steel scraper 41 reduces resistance with the help of buoyancy, the flexible side plate 42 fits against the tank wall to prevent sludge leakage, and the lip plate 43 efficiently scrapes and collects sludge. During the tank bottom movement stage, the auxiliary moving wheel 413 and the moving guide wheel 412 work together to reduce friction and support the scraper 41. During the rising and resetting stage, the moving guide wheel 412 rolls along the bearing track 2, and the limit wheel 411 ensures the stability of the movement trajectory. The coordinated operation of all components achieves efficient, stable, and low-consumption sludge removal.

[0034] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A mud scraping assembly, characterized by, include: The longitudinally extending scraper blade includes an internally hollow stainless steel square tube, with both ends of the stainless steel square tube sealed. Movable guide wheels are disposed at both ends of the scraper blade, and the movable guide wheels are distributed on the front and rear sides of the scraper blade; the rotation axis of the movable guide wheels is parallel to the length direction of the scraper blade; the diameter of the movable guide wheels is greater than the width of the scraper blade; the movable guide wheels protrude slightly from both ends of the scraper blade along its width direction.

2. The mud scraping assembly of claim 1, wherein, The scraper blade is provided with a plurality of auxiliary moving wheels, which are arranged along the length of the scraper blade; wherein, the rotation axis of the auxiliary moving wheels is parallel to the length of the scraper blade; the diameter of the auxiliary moving wheels is greater than the width of the scraper blade; and the auxiliary moving wheels protrude slightly from both ends of the scraper blade along its width.

3. The mud scraping assembly of claim 1, wherein, Multiple auxiliary moving wheels are staggered along the length of the scraper blade and distributed on the front and rear sides of the scraper blade.

4. The mud scraping assembly of claim 1, wherein, Both ends of the scraper are fixedly connected to the chain via connecting accessories.

5. The mud scraping assembly of claim 4, wherein, The connecting accessory is an L-shaped connecting structure, which has parallel double bottom plates and connecting wing plates; the double bottom plates are respectively fixedly connected to the left and right sides of a sub-chain of the chain; the connecting wing plates are fixedly connected to the front and rear sides of the scraper plate by bolts.

6. The mud scraping assembly of claim 5, wherein, The connecting accessories include left and right L-shaped connecting plates; the bottom plates of the left and right L-shaped connecting plates are sandwiched between the two sides of a sub-chain to form a double bottom plate, which is fixedly connected to the sub-chain; the vertical plates of the left and right L-shaped connecting plates are stacked to form connecting wing plates, and the scraper is fixedly connected by multiple bolts.

7. The mud scraping assembly of claim 5, wherein, A buffer pad with a thickness of more than 5mm is also fixed between the connecting wing plate and the scraper plate.

8. A mud scraping assembly according to claim 4, wherein, The scraper blade is provided with limiting wheels at both ends. The limiting wheels rotate around a vertical axis. The bearing track is restricted between the chain and the limiting wheels. The limiting wheels are located between the bearing track and the pool wall. The distance between the limiting wheels and the side wall of the track is set to 3-5mm.

9. A mud scraping assembly according to claim 1, characterized in that, The scraper blade is equipped with flexible side plates at both ends for contacting the pool wall.

10. A mud scraping assembly according to claim 1, characterized in that, It also includes a lip plate extending along with the scraper blades. Multiple scraper blades are arranged in parallel and spaced apart on the chain. At least one upper scraper blade is provided with a lip plate. The lip plate is fixed to the side of the scraper blade facing away from the bearing track.

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