A sediment separation device for dredged materials in waterways

Abstract

The present invention relates to the field of sediment separation, and specifically to a sediment separation device for dredged materials in a waterway. The present invention comprises an outer shell, in which a vibration component, a cyclone component and a sedimentation component are arranged, and the vibration component, the cyclone component and the sedimentation component are sequentially connected by pipelines. The components of the present invention have clear division of labor, and this collaborative operation mode greatly improves the overall processing efficiency, shortens the processing time, and can quickly respond to large-scale waterway dredged material processing tasks. The efficient sediment separation capability of the present invention enables the dredged materials in the waterway to be properly processed, avoiding the problem of turbidity and ecological imbalance in the surrounding waters caused by the direct dumping of untreated waste. It reduces the disorderly sedimentation of sediment in the waterway, reduces the risk of safety accidents such as ship grounding, protects the habitat of aquatic organisms, maintains the stability and balance of the aquatic ecosystem, and promotes the green and sustainable development of waterway engineering.

Description

Technical Field

[0001] The invention relates to the field of sediment separation, and in particular to a sediment separation device for waterway dredged materials. Background Art

[0002] With the booming global trade, waterways, as important logistics channels, are increasingly dredged. The large amount of waste generated by dredging is complex, including mud, large and small stones, various debris and potential pollutants. The disadvantages of traditional treatment methods are obvious:

[0003] From the perspective of ecological environment, the treatment method of simple sedimentation or direct dumping is that untreated dredged materials directly enter the surrounding waters, causing the turbidity of the water body to rise sharply, and the sunlight penetration rate to be greatly reduced, which seriously affects the photosynthesis of aquatic plants and thus destroys the foundation of the entire water ecological food chain. Moreover, the disorderly siltation has changed the original topography of the water area, making the waterway shallower and the water flow sluggish, which not only increases the resistance of ship navigation and increases fuel consumption, but also frequently causes safety accidents such as ship grounding, which brings great hidden dangers to waterway transportation.

[0004] There are many defects in existing separation technologies. In terms of efficiency, most traditional separation equipment is outdated, the processing process is lengthy and incoherent, and there is a lack of efficient coordination between various links, resulting in slow overall processing speed. Some common separation devices based on the principle of gravity sedimentation have a long sedimentation time and a large equipment footprint, and the amount of dredged materials that can be processed per unit time is extremely limited, which is far from meeting the needs of current large-scale waterway dredging projects. In terms of accuracy, due to technical means, it is difficult to accurately distinguish between silt, debris and particles of different sizes. The separated silt is often mixed with a large amount of impurities and cannot be used directly. The clean water does not meet the reuse standards, and a lot of resources are still needed for secondary treatment. In terms of equipment cost and operation and maintenance, the complex structural design makes the equipment purchase price high, often millions of yuan, and the operation process requires extremely high professional skills of the operator. It is necessary to equip a professional technical team for daily maintenance. Once the equipment fails, it is difficult and time-consuming to repair, which not only delays the progress of the project, but also incurs high maintenance costs. This series of factors makes waterway operators discouraged and seriously hinders the promotion and application of technology. Summary of the invention

[0005] The purpose of the present invention is to overcome the above problems and provide a device for separating sediment from dredged materials in a waterway. To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A device for separating sediment from dredged materials in a waterway comprises a device body, wherein the device body comprises an outer shell, wherein a vibration component, a cyclone component and a sedimentation component are arranged in the outer shell, wherein the vibration component, the cyclone component and the sedimentation component are connected in sequence through a pipeline, wherein the vibration component is used to separate large-grained stones, the cyclone component is used to separate fine sand, and the sedimentation component is used to separate suspended particles.

[0007] As an improvement, the vibration assembly includes a vibrating screen and a mud inlet. The mud inlet is arranged at the front end of the shell, the vibrating screen is arranged at the top of the mud inlet, the vibrating screen is arranged at an angle, and a mixing zone is provided at the bottom of the mud inlet. The mixing zone is used to mix the mud with clean water to prevent clogging of subsequent treatment.

[0008] As an improvement, the cyclone assembly includes a cyclone grit machine, a first sludge hopper is provided at the bottom of the cyclone grit machine, a first water inlet pipe is provided between the cyclone grit machine and the mixing zone, the first water inlet pipe is axially arranged on the cyclone grit machine, a lifting pump is provided on the first water inlet pipe, a sand discharge pipe is provided at the bottom of the first sludge hopper, the sand discharge pipe passes through the outer shell and extends outward, and a sand discharge pump is provided on the sand discharge pipe.

[0009] As an improvement, the sedimentation component includes a sedimentation tank, a plurality of inclined plates are provided on the top of the sedimentation tank, a second sludge hopper is provided at the bottom of the sedimentation tank, a water distribution area is provided between the inclined plate and the second sludge hopper, a second water inlet pipe is provided between the water distribution area and the vortex sand settling tank, a mud discharge pipe is provided at the bottom of the second sludge hopper, the mud discharge pipe passes through the outer shell and extends outward, a mud discharge pump is provided on the mud discharge pipe, an overflow weir is provided on the top of the side of the sedimentation tank, and the clean water at the top of the sedimentation tank flows out through the overflow weir.

[0010] As an improvement, a clean water tank is further provided in the shell, and the clean water tank is arranged on the side of the overflow weir. A water outlet pipe is provided on the clean water tank, and the water outlet pipe passes through the shell and extends outward.

[0011] As an improvement, a return water pipe is provided on the clean water tank, and the return water pipe is connected to the mixing zone, the cyclone sand settling machine and the sedimentation tank. The mixing zone is connected to the clean water tank through the return water pipe for mixing mud and clean water to prevent blockage. The return water pipe is connected to the cyclone sand settling machine and the sedimentation tank for backwashing, and a valve and a return pump are provided on the return water pipe.

[0012] As an improvement, a control panel is provided on the shell, and the control panel is electrically connected to the vibrating screen, the cyclone sand settling machine, and the valve.

[0013] The advantages of the present invention are:

[0014] 1. The main body of the device of the present invention is equipped with a vibration component, a cyclone component and a sedimentation component, which are connected in sequence through pipes to form a tightly connected and smoothly running processing flow. Each component has a clear division of labor. The vibration component first intercepts large-grained stones to prevent them from hindering the subsequent fine separation process. The cyclone component then operates at high speed to accurately separate fine sand, and the sedimentation component finally precipitates and removes suspended particles. This collaborative operation mode greatly improves the overall processing efficiency. Compared with the traditional step-by-step processing and lack of linkage, it greatly shortens the processing time and can quickly respond to large-scale waterway dredging processing tasks.

[0015] 2. In the sewage reuse of the present invention, clean water is introduced into the mixing zone at the bottom of the mud inlet to mix with the incoming mud, and the material concentration is adjusted in real time, which effectively prevents the subsequent pipelines from being blocked due to the dredged materials being too thick; the return water pipe equipped with the clean water tank can backwash the mixing zone, cyclone sand settling machine, and sedimentation tank as needed, and use high-speed water flow to disturb the deposited mud and sand, and timely discharge the possible accumulated debris, so as to keep the inside of the equipment clean and unobstructed, reduce equipment failures and downtime maintenance time caused by blockage, and ensure long-term stable operation.

[0016] 3. The efficient sediment separation capability of the present invention allows the dredged materials from the waterway to be properly handled, avoiding the problem of turbidity and ecological imbalance in the surrounding waters caused by direct dumping of untreated waste. It reduces the disorderly sedimentation in the waterway, reduces the risk of safety accidents such as ship grounding, protects the habitat of aquatic organisms, maintains the stability and balance of the aquatic ecosystem, and promotes the green and sustainable development of waterway engineering. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of a sediment separation device for dredged materials in a waterway in Example 1.

[0018] Figure 2 This is a diagram of the internal structure of a sediment separation device for dredged materials in a waterway in Example 1.

[0019] Figure 3 This is a top view of a sediment separation device for dredged materials in a waterway in Example 1.

[0020] Figure 4 This is a cross-sectional view of a sediment separation device for dredged materials in a waterway in Example 1.

[0021] The symbols in the figure are:

[0022] 1. Device body; 2. Casing; 3. Vibrating screen; 4. Mud inlet; 5. Mixing zone; 6. Cyclone sand settling machine; 7. First sludge hopper; 8. First water inlet pipe; 9. Sand discharge pipe; 10. Sedimentation tank; 11. Inclined plate; 12. Second sludge hopper; 13. Water distribution zone; 14. Second water inlet pipe; 15. Mud discharge pipe; 16. Overflow weir; 17. Clean water tank; 18. Water outlet pipe; 19. Return water pipe; 20. Valve; 21. Control panel. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] In the description of the embodiments of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invented product is usually placed when used. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0025] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of the embodiments of the present invention, "plurality" means at least 2.

[0027] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The present invention is described in detail and specifically by specific examples below to provide a better understanding of the present invention, but the following examples do not limit the protection scope of the present invention.

[0029] Example 1

[0030] This embodiment discloses a sediment separation device for dredged materials in a waterway.

[0031] like Figures 1 to 4 As shown, this embodiment includes a device body 1, which includes a shell 2. A vibration component, a cyclone component, and a sedimentation component are arranged in the shell 2. The vibration component, the cyclone component, and the sedimentation component are connected in sequence through pipes. The vibration component is used to separate large-particle stones, the cyclone component is used to separate fine sand, and the sedimentation component is used to separate suspended particles.

[0032] The main body 1 of the device is wrapped with a solid shell 2, which not only protects the internal components but also ensures overall stability. The shell 2 integrates the vibration component, cyclone component, and sedimentation component, which are connected in sequence through pipelines to form a continuous treatment process. The vibration component intercepts large-grained stones; the cyclone component uses high-speed cyclones to efficiently separate fine sand; the sedimentation component precipitates and removes suspended particles to ensure that the outflowing clean water meets the standards for reuse.

[0033] The vibration assembly includes a vibrating screen 3 and a mud inlet 4. The mud inlet 4 is arranged at the front end of the shell 2, the vibrating screen 3 is arranged at the top of the mud inlet 4, the vibrating screen 3 is arranged obliquely, and a mixing area 5 is arranged at the bottom of the mud inlet 4. The mixing area 5 is used to mix the mud with clean water to prevent clogging of subsequent treatment.

[0034] The dredged material enters the vibration assembly from the mud inlet 4, and the vibrating screen 3 vibrates at a high frequency. Due to the large inertia and small friction with the screen surface, the large-grained stones quickly roll down and separate under the combined action of the inclined screen surface and gravity, achieving preliminary screening. The remaining sand-containing slurry flows into the mixing area 5 and mixes with clean water, optimizing the fluidity of the material and laying the foundation for subsequent processing.

[0035] The cyclone assembly includes a cyclone grit machine 6, a first sludge hopper 7 is provided at the bottom of the cyclone grit machine 6, a first water inlet pipe 8 is provided between the cyclone grit machine 6 and the mixing zone 5, the first water inlet pipe 8 is axially arranged on the cyclone grit machine 6, a lifting pump is provided on the first water inlet pipe 8, a sand discharge pipe 9 is provided at the bottom of the first sludge hopper 7, the sand discharge pipe 9 passes through the outer shell 2 and extends outward, and a sand discharge pump is provided on the sand discharge pipe 9.

[0036] In order to ensure that the mixed material can smoothly overcome the pipeline resistance and have sufficient kinetic energy when entering the cyclone sand settling machine 6, a lifting pump is provided on the first water inlet pipe 8. The lifting pump is a centrifugal pump, which has the characteristics of large flow and high head, and can meet the demand for fast and strong material transportation when the device processes dredged materials on a large scale. It can quickly extract and pressurize the material in the mixing area 5, so that it cuts into the cyclone sand settling machine 6 at a high speed, prompting the cyclone to reach the ideal separation strength in an instant, greatly improving the processing efficiency.

[0037] The mixed material enters the cyclone sand settling machine 6 at high speed through the first water inlet pipe 8 via the lifting pump, forming a strong cyclone in the machine. According to the centrifugal sedimentation law, the fine sand particles are driven to the cylinder wall by centrifugal force, spirally sink to the first sludge hopper 7, and the clean water gathers and rises to the center, and is discharged through the overflow pipe, completing the initial separation of silt and sand, and the separation efficiency is significantly improved compared with the traditional method.

[0038] The sedimentation assembly includes a sedimentation tank 10, a plurality of inclined plates 11 are provided on the top of the sedimentation tank 10, a second sludge hopper 12 is provided at the bottom of the sedimentation tank 10, a water distribution area 13 is provided between the inclined plate 11 and the second sludge hopper 12, a second water inlet pipe 14 is provided between the water distribution area 13 and the cyclone sand settling tank, a mud discharge pipe 15 is provided at the bottom of the second sludge hopper 12, the mud discharge pipe 15 passes through the outer shell 2 and extends outward, a mud discharge pump is provided on the mud discharge pipe 15, an overflow weir 16 is provided on the top of the side of the sedimentation tank 10, and the clean water at the top of the sedimentation tank 10 flows out through the overflow weir 16.

[0039] The overflow water of the cyclone sand settling machine 6 enters the water distribution area 13 of the sedimentation tank 10 through the second water inlet pipe 14, and evenly overflows the inclined plate 11. Based on the gravity sedimentation mechanism, the suspended particles slowly settle to the second sludge hopper 12 between the inclined plates 11, and the clean water continues to rise, passing over the overflow weir 16 and entering the clean water tank 17. The inclined plate 11 greatly expands the sedimentation area, shortens the sedimentation path, strengthens the purification effect, and ensures that the water quality meets the standards for reuse.

[0040] The second sludge hopper 12 is in an inverted cone shape to fit the bottom contour of the sedimentation tank 10, so that the sludge can slide to the bottom of the hopper under the action of gravity. Its volume is reasonably determined based on the processing capacity of the device and the sludge generation rate to ensure that it can accommodate enough sludge within a certain operating cycle and reduce the interference of frequent cleaning on the stability of equipment operation. The water distribution area 13 between the inclined plate 11 and the second sludge hopper 12 plays a key role in evenly distributing the water flow.

[0041] A clean water tank 17 is also provided in the housing 2 . The clean water tank 17 is arranged on the side of the overflow weir 16 . A water outlet pipe 18 is provided on the clean water tank 17 . The water outlet pipe 18 passes through the housing 2 and extends outward.

[0042] A return water pipe 19 is provided on the clean water tank 17, and the return water pipe 19 is connected to the mixing area 5, the cyclone sand settling machine 6, and the sedimentation tank 10. The mixing area 5 is connected to the clean water tank 17 through the return water pipe 19 for mixing mud and clean water to prevent blockage. The return water pipe 19 is connected to the cyclone sand settling machine 6 and the sedimentation tank 10 for backwashing. A valve 20 and a return pump are provided on the return water pipe 19.

[0043] The water in the clean water tank 17 is regulated by the reflux pump and the valve 20, and supplies clean water to the mixing area 5 through the reflux pipe 19 as needed to prevent blockage, or to reversely flush the cyclone sand settling machine 6 and the sedimentation tank 10. During flushing, the high-speed water flow disturbs the deposited silt and carries it out, keeping the interior of the equipment clean and ensuring long-term stable operation.

[0044] The clean water tank 17 serves as a storage unit for purified clean water. The stored water can not only be reused or discharged in compliance with standards through the outlet pipe 18, but also the circulation network constructed by the return pipe 19 provides a strong guarantee for the stable operation of the key links within the device. The water introduced into the clean water tank 17 through the return pipe 19 can adjust the concentration of the incoming mud material in real time. When faced with waterway dredged materials of different textures and water contents, the operator can flexibly operate the valve 20 according to the actual situation, turn on the return pump, and accurately control the amount of clean water injected. This operation effectively avoids the problem of subsequent pipeline blockage due to excessive thickness of the dredged materials, ensures the continuity and smoothness of the entire processing flow, and enables it to stably and efficiently accept various types of input materials.

[0045] For the cyclone sand settling machine 6 and the sedimentation tank 10, the return water pipe 19 also plays a backwashing role. After the equipment has been running for a period of time, the cylinder wall and guide vanes of the cyclone sand settling machine 6 and the inclined plate 11 and the bottom of the sedimentation tank 10 will inevitably be attached with silt and sand sediments. At this time, the valve 20 and the reflux pump are coordinated to make the water in the clean water tank 17 reversely rush into these key areas at a certain pressure and flow rate. The high-speed water flow can strongly disturb the deposited silt and discharge it. This not only maintains the cleanliness of the inside of the equipment, ensures that each component is always in the best working condition, and extends the maintenance cycle of the equipment, but also avoids problems such as reduced processing efficiency and equipment failure caused by silt accumulation.

[0046] The water in the clean water tank 17 also has other potential application scenarios. It can be used for daily cleaning work in the surrounding areas of the device, including flushing the equipment casing 2, the outer wall of the conveying pipeline, etc., to prevent the accumulation of residual sediment, reduce the risk of equipment corrosion, and keep the workplace clean and tidy and hygienic, and optimize the working environment. In some auxiliary construction links of waterways that do not require high water quality, such as dust suppression and watering at the construction site, spraying and moisturizing on temporary roads, etc., the water in the clean water tank 17 can also be used after simple treatment (such as filtering to remove a small amount of residual suspended matter). On the one hand, this reduces the use of new external water resources, which is in line with the current concept of environmental protection and water conservation; on the other hand, it fully taps the secondary utilization value of water resources and reduces the overall operating cost of waterway dredging projects.

[0047] A control panel 21 is provided on the housing 2 , and the control panel 21 is electrically connected to the vibrating screen 3 , the cyclone sand settling machine 6 , and the valve 20 .

[0048] When faced with channel dredged materials of different composition and characteristics, the operator only needs to input or select the corresponding material parameters on the control panel 21, such as basic information such as sediment content, stone ratio, and material viscosity, and the intelligent control system can quickly calculate based on the built-in precise algorithm and automatically adjust the vibration frequency of the vibrating screen 3 to adapt it to the material screening requirements. If there are many stones and large particles in the material, the system will appropriately increase the vibration frequency, enhance the screening force, and ensure the efficient separation of large-particle stones; for the cyclone sand settling machine 6, the cyclone speed can be automatically optimized according to the material flow rate and the expected sediment separation accuracy to ensure that the separation effect of fine sand is always in the best state. The control of the valve 20 is also intelligent. When it is necessary to inject clean water into the mixing area 5 to prevent blockage, the system can accurately control the opening of the valve 20 based on the data fed back by the material concentration sensor in the mixing area 5, adjust the flow of the reflux pump, and realize the precise supply of clean water; when the cyclone sand settling machine 6 and the sedimentation tank 10 are backwashed, the water pressure and water volume can be reasonably allocated to ensure the backwashing effect while avoiding water waste.

[0049] The specific embodiments of the present invention are described in detail above, but they are only examples, and the present invention is not equivalent to the specific embodiments described above. For those skilled in the art, any equivalent modifications and substitutions made to the present invention are also within the scope of the present invention. Therefore, the equalization changes and modifications made without departing from the spirit and scope of the present invention should be included in the scope of the present invention.

Claims

1. A device for separating sediment from dredged materials in a waterway, characterized in that: The invention comprises a device body (1), wherein the device body (1) comprises an outer shell (2), wherein a vibration component, a cyclone component and a sedimentation component are arranged in the outer shell (2), wherein the vibration component, the cyclone component and the sedimentation component are connected in sequence through a pipeline, wherein the vibration component is used to separate large-grained stones, the cyclone component is used to separate fine sand, and the sedimentation component is used to separate suspended particles.

2. A silt separation device for dredged materials in a waterway according to claim 1, characterized in that: The vibration assembly comprises a vibrating screen (3) and a mud inlet (4); the mud inlet (4) is arranged at the front end of the housing (2); the vibrating screen (3) is arranged at the top of the mud inlet (4); the vibrating screen (3) is arranged at an angle; a mixing zone (5) is provided at the bottom of the mud inlet (4); the mixing zone (5) is used for mixing mud with clean water to prevent clogging for subsequent treatment.

3. A silt separation device for dredged materials in a waterway according to claim 2, characterized in that: The cyclone assembly comprises a cyclone grit setter (6), a first sludge hopper (7) is provided at the bottom of the cyclone grit setter (6), a first water inlet pipe (8) is provided between the cyclone grit setter (6) and the mixing zone (5), the first water inlet pipe (8) is axially arranged on the cyclone grit setter (6), a lifting pump is provided on the first water inlet pipe (8), a sand discharge pipe (9) is provided at the bottom of the first sludge hopper (7), the sand discharge pipe (9) passes through the outer shell (2) and extends outward, and a sand discharge pump is provided on the sand discharge pipe (9).

4. A silt separation device for dredged materials in a waterway according to claim 3, characterized in that: The sedimentation assembly comprises a sedimentation tank (10), a plurality of inclined plates (11) are arranged on the top of the sedimentation tank (10), a second sludge hopper (12) is arranged on the bottom of the sedimentation tank (10), a water distribution area (13) is arranged between the inclined plates (11) and the second sludge hopper (12), a second water inlet pipe (14) is arranged between the water distribution area (13) and the cyclone sand settling tank, a sludge discharge pipe (15) is arranged on the bottom of the second sludge hopper (12), the sludge discharge pipe (15) passes through the outer shell (2) and extends outward, a sludge discharge pump is arranged on the sludge discharge pipe (15), an overflow weir (16) is arranged on the top of the side of the sedimentation tank (10), and clean water at the top of the sedimentation tank (10) flows out through the overflow weir (16).

5. A device for separating sediment from dredged materials in a waterway according to claim 4, characterized in that: A clean water tank (17) is also provided in the shell (2). The clean water tank (17) is arranged on the side of the overflow weir (16). A water outlet pipe (18) is provided on the clean water tank (17). The water outlet pipe (18) passes through the shell (2) and extends outward.

6. A device for separating sediment from dredged materials in a waterway according to claim 5, characterized in that: The clean water tank (17) is provided with a return water pipe (19), and the return water pipe (19) is connected to the mixing area (5), the cyclone sand settling machine (6), and the sedimentation tank (10). The mixing area (5) is connected to the clean water tank (17) through the return water pipe (19) for mixing mud and clean water to prevent blockage. The return water pipe (19) is connected to the cyclone sand settling machine (6) and the sedimentation tank (10) for backwashing. The return water pipe (19) is provided with a valve (20) and a return pump.

7. A silt separation device for dredged materials in a waterway according to claim 6, characterized in that: The housing (2) is provided with a control panel (21), and the control panel (21) is electrically connected to the vibrating screen (3), the cyclone sand settling machine (6), and the valve (20). even.

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