A multi-stage sedimentation device

Abstract

The utility model relates to the technical field of sedimentation equipment, and the utility model provides a multistage sedimentation device, it includes main part and is arranged on the main part's blowoff pipe, feed pipe and water outlet, and the main part has the chamber for the use of sedimentation, still include the baffle and the overflow pipe, the baffle number is N, from top to bottom is sequentially spaced in the chamber, and the chamber is divided into (N+1) the sedimentation chamber for the use of sedimentation, the bottom of each sedimentation chamber is provided with a blowoff pipe through the overflow pipe intercommunication of two sedimentation chambers adjacent to each other, the feed pipe is connected with the uppermost sedimentation chamber, and the water outlet is connected with the lowermost sedimentation chamber. Through the above technical scheme, the problem that the sedimentation equipment of horizontal plane flatly set is wide, time -consuming, and the overall working efficiency is low when sewage needs multiple sedimentation treatment in the related art is solved.

Description

Technical Field

[0001] The embodiments of this utility model relate to the field of sedimentation equipment technology, specifically, to a multi-stage sedimentation device. Background Technology

[0002] Sedimentation equipment is a device that uses gravity to settle solid particles or droplets suspended in a liquid. It is mainly used in solid-liquid separation and extraction processes, serving to filter, dewater, and fix particles. It is commonly used for wastewater sedimentation treatment to obtain clearer water.

[0003] Based on the flow pattern of the liquid, sedimentation is generally divided into two types: vertical flow sedimentation and horizontal flow sedimentation. Regardless of whether vertical or horizontal flow is adopted, if the equipment is laid out horizontally, it will occupy a large area. At the same time, if high-concentration wastewater is to be treated by sedimentation, multiple sedimentation devices are required for continuous sedimentation, which increases the overall footprint and extends the treatment time, resulting in a decrease in overall work efficiency. Therefore, it is necessary to improve and optimize the existing technology to enhance the overall work efficiency. Utility Model Content

[0004] To overcome the above-mentioned defects, the embodiments of this utility model provide a multi-stage sedimentation device, which solves the problems in related technologies where sedimentation equipment laid flat on the horizontal surface has a large footprint, long time consumption, and low overall working efficiency when sewage needs to be treated by sedimentation multiple times.

[0005] According to one aspect, at least one embodiment of the present invention provides a multi-stage sedimentation device, including a main body and a drain outlet, a feed inlet, and a water outlet disposed on the main body, the main body having a chamber for sedimentation; further comprising: N partitions are arranged at intervals from top to bottom in the chamber, dividing the chamber into sedimentation chambers for sedimentation. Two adjacent sedimentation chambers are connected by an overflow pipe. A drain pipe is provided at the bottom of each sedimentation chamber. The feed pipe is connected to the uppermost sedimentation chamber, and the outlet pipe is connected to the lowermost sedimentation chamber.

[0006] For example, in a multi-stage sedimentation device provided in at least one embodiment of the present invention, the partition is generally cone-shaped, and the small end of the cone points downward.

[0007] For example, in at least one embodiment of the present invention, a multi-stage precipitation device further includes: A rotating shaft is rotatably connected to a suspended support located at the upper end of the chamber and extends through all the sedimentation chambers; A sludge scraper is mounted on the rotating shaft and is used to scrape away the impurities settled at the bottom of the sedimentation chamber. At least one sludge scraper is provided in each sedimentation chamber.

[0008] For example, in at least one embodiment of the present invention, a multi-stage precipitation device further includes: A flow guide is disposed on the outer periphery of the rotating shaft, located at the discharge end of the feed inlet and above the feed end of the drain pipe. The flow guide is used to receive the material conveyed to the chamber by the feed inlet and guide the material to disperse away from the rotating shaft. At least one flow guide is provided in each sedimentation chamber.

[0009] For example, in a multi-stage sedimentation device provided in at least one embodiment of the present invention, the guide member is cone-shaped and is generally smaller at the top and larger at the bottom.

[0010] For example, in a multi-stage sedimentation device provided in at least one embodiment of the present invention, the extension direction of the scraper is set at an angle to the axis of the rotating shaft, and the scraper is configured to push the impurities settled in the sedimentation chamber toward the direction closer to the rotating shaft after rotation.

[0011] For example, in at least one embodiment of the present invention, a multi-stage precipitation device further includes: A pre-screening box is located on the outside of the main body and is connected to the feed end of the feed pipe. The pre-screening box has a pre-screening chamber. A pre-screening component is slidably disposed in the pre-screening chamber. The pre-screening component has sieve holes and is used to intercept a portion of impurities with a certain volume in the material.

[0012] For example, in at least one embodiment of the present invention, a multi-stage precipitation device further includes: Two side-extension boxes are respectively disposed on the left and right sides of the pre-screening box. Each side-extension box has a side-extension chamber that communicates with the pre-screening chamber. The pre-screening component slides simultaneously in the pre-screening chamber and at least one of the side-extension chambers. Three vertical plates are spaced apart on the pre-screening component and divide the pre-screening component into two pre-screening zones. The extension direction of the vertical plates is parallel to the vertical direction and parallel to the movement direction of the material passing through the pre-screening box. The two vertical plates furthest apart are configured such that when the pre-screening component is located in the side extension chamber, the vertical plates abut against the side wall of the side extension chamber.

[0013] For example, in a multi-stage sedimentation device provided in at least one embodiment of the present invention, a slag discharge port communicating with the side-deposition chamber is provided at the bottom end of the side-deposition box near the pre-screening box.

[0014] For example, in a multi-stage sedimentation device provided in at least one embodiment of the present invention, a gate is slidably provided at the slag discharge port, configured such that after the gate slides, the side extension chamber communicates with the outside and discharges the impurities intercepted by the pre-screening element.

[0015] The beneficial effects of the embodiments of this utility model are as follows: In this invention, the partition divides the chamber into multiple sedimentation chambers, enabling multi-stage sedimentation of wastewater within the same main body. This avoids the large footprint problem caused by the horizontal arrangement of multiple sedimentation devices in existing technologies. An overflow pipe connects adjacent sedimentation chambers, allowing wastewater to flow automatically downwards without the need for additional power equipment, simplifying the process. Each sedimentation chamber has a separate drain outlet at its bottom, allowing for timely discharge of settled impurities and preventing cross-contamination between chambers, thus improving sedimentation efficiency. Through multi-stage sedimentation, impurities in the wastewater are more thoroughly removed, improving effluent quality. This structure, through its vertical spatial layout and progressive fluid flow, achieves a reduction in floor space and an increase in treatment efficiency. It allows for the arrangement of more sedimentation devices within a limited horizontal area, thereby improving the overall sedimentation treatment effect and effectively solving the problems existing in existing technologies. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure in one embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the structure at the connection between the feed pipe and the pre-screening box in the embodiment; Figure 3 for Figure 1 A schematic diagram of the internal structure of the pre-screening box in the embodiment; Figure 4 for Figure 1 A schematic diagram of the internal structure of the pre-screening box (without pre-screening components) in the embodiment; Figure 5 for Figure 1 A schematic diagram of the structure at the connection between the feed inlet and the pre-screening box at the second angle in the embodiment; In the diagram: 1. Main body, 2. Sewage outlet, 3. Feed inlet, 4. Water outlet, 5. Chamber, 6. Baffle, 7. Sedimentation chamber, 8. Overflow pipe, 9. Rotating shaft, 10. Sludge scraper, 11. Flow guide, 12. Pre-screening box, 13. Pre-screening chamber, 14. Pre-screening component, 15. Side extension box, 16. Side extension chamber, 17. Vertical plate, 18. Pre-screening area, 19. Slag discharge port, 20. Gate, 21. Suspended support. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0019] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0020] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] like Figure 1As shown, this invention illustrates a multi-stage sedimentation device according to one embodiment. The main body 1 of the multi-stage sedimentation device has a hollow structure, forming a sedimentation chamber 5 inside. An inlet 3 is located at the top of the main body 1. N partitions 6 are arranged vertically from top to bottom within the chamber 5, dividing the chamber 5 into (N+1) sedimentation chambers 7. Each sedimentation chamber 7 has a drain pipe 2 at its bottom. Adjacent sedimentation chambers 7 are connected by overflow pipes 8, one end of which connects to the upper end of the upper sedimentation chamber 7, and the other end connects to the lower sedimentation chamber 7, forming a progressively downward fluid channel. Here, N is an integer greater than or equal to 1, and the number of N can be adaptively adjusted according to the height of the main body 1 and the spacing between the upper and lower layers. In general applications, N ranges from 1 to 8.

[0025] Wastewater enters the uppermost sedimentation chamber 7 through the inlet pipe 3, where it undergoes initial sedimentation under gravity. Solid particles settle to the bottom of sedimentation chamber 7, and the supernatant flows into the adjacent lower sedimentation chamber 7 through the overflow pipe 8. The sedimentation process is repeated in each sedimentation chamber 7, and the final treated water is discharged from the outlet pipe 4 of the lowermost sedimentation chamber 7. Impurities settled at the bottom of each sedimentation chamber 7 can be discharged through the corresponding drain pipe 2. The upper end of each overflow pipe 8 is lower than the upper end of the sedimentation tank it is connected to.

[0026] The partition 6 divides the chamber 5 into multiple sedimentation chambers 7, enabling multi-stage sedimentation of wastewater within the same main body 1. This avoids the large footprint problem caused by the horizontal arrangement of multiple sedimentation devices in existing technologies. An overflow pipe 8 connects adjacent sedimentation chambers 7, allowing wastewater to flow automatically downwards without the need for additional power equipment, simplifying the process. Each sedimentation chamber 7 has a separate drain outlet 2 at its bottom, allowing for timely discharge of settled impurities and preventing cross-contamination between chambers, thus improving sedimentation efficiency. Through multi-stage sedimentation, impurities in the wastewater are more thoroughly removed, improving effluent quality. This structure, through its vertical spatial layout and progressive fluid flow, achieves a reduction in footprint and an increase in treatment efficiency. It allows for the arrangement of more sedimentation devices within a limited horizontal plane, thereby improving the overall sedimentation treatment effect and effectively solving the problems existing in existing technologies.

[0027] In some examples, a multi-stage precipitation device is refined, for example, such as Figure 1 As shown, the partition 6 of the multi-stage sedimentation device is cone-shaped, with the smaller end pointing downwards and the larger end upwards, forming a funnel-shaped structure. The edge of the partition 6 is sealed to the inner wall of the main body 1, dividing the chamber 5 into multiple sedimentation chambers 7. The cone surface of each partition 6 guides the sedimented impurities to move downwards to the drain outlet 2, where they slide down under gravity and are discharged.

[0028] The conical structure of baffle 6 allows impurities deposited on it to automatically slide down the conical surface to the drain pipe 2, preventing accumulation and improving drainage efficiency. The conical baffle 6 also enhances the sedimentation chamber 7's bottom impurity collection capacity, causing impurities to concentrate at the drain pipe 2 for easier discharge. By guiding the directional movement of impurities, the residence time within the sedimentation chamber 7 is reduced, lowering the risk of secondary pollution and further improving sedimentation efficiency. The conical baffle 6's structural design optimizes the space utilization of the sedimentation chamber 7, making the sedimentation process more efficient and effectively solving the problems of poor drainage and low efficiency in existing sedimentation equipment.

[0029] In some examples, a multi-stage precipitation device is refined, for example, such as Figure 1 As shown, a suspended support 21 is provided at the upper end of the main body 1 chamber 5 of the multi-stage sedimentation device. A rotating shaft 9 is rotatably connected to the suspended support 21 and passes through all sedimentation chambers 7 in a vertical direction. At least one scraper 10 is provided on the rotating shaft 9 in each sedimentation chamber 7. The scraper 10 rotates with the rotating shaft 9 and scrapes the impurities settled in the sedimentation chamber 7.

[0030] When the device is running, the drive mechanism drives the rotating shaft 9 to rotate, causing the scraper 10 to make circular motions within the settling chamber 7. The scraper 10 scrapes impurities settled on the baffle 6 or at the bottom of the settling chamber 7 toward the drain pipe 2, promoting the discharge of impurities.

[0031] The combination of the rotating shaft 9 and the scraper 10 enables the mechanical removal of impurities within the sedimentation chamber 7, preventing their accumulation and caking. The rotational motion of the scraper 10 makes it easier for impurities to gather towards the drain outlet 2, improving drainage efficiency. Mechanical scraping reduces the frequency of manual cleaning and lowers maintenance costs. The continuous scraping action of the scraper 10 also prevents settled impurities from re-suspension, ensuring the stability of the sedimentation effect. When used in conjunction with the conical baffle 6, the scraper 10 further accelerates the sliding of impurities along the conical surface, enhancing the overall drainage capacity of the sedimentation device and effectively solving the problem of poor drainage in existing sedimentation equipment.

[0032] In some examples, a multi-stage precipitation device is refined, for example, such as Figure 1 As shown, a guide member 11 is provided on the outer periphery of the rotating shaft 9 of the multi-stage sedimentation device. The guide member 11 is located above the feed end of the sewage outlet 2, and at least one guide member 11 is provided in each sedimentation chamber 7. The guide member 11 is conical in shape, with a smaller top and a larger bottom, forming an inverted conical structure.

[0033] When wastewater enters the sedimentation chamber 7 from the inlet 3, it first impacts the guide 11. The guide 11 disperses the wastewater away from the rotating shaft 9, ensuring that the wastewater is evenly distributed within the sedimentation chamber 7, thus preventing the wastewater from directly impacting the bottom of the sedimentation chamber 7 and causing the settled impurities to resuspend.

[0034] The design of the flow guide 11 alters the flow path of wastewater entering the sedimentation chamber 7, allowing the wastewater to be evenly distributed within the chamber and improving sedimentation efficiency. By dispersing the wastewater, the impact on the bottom of the sedimentation chamber 7 is reduced, lowering the risk of re-stirring of settled impurities and ensuring the stability of the sedimentation effect. The conical structure of the flow guide 11 guides the wastewater to diffuse outwards, increasing the flow path and residence time within the sedimentation chamber 7, which is beneficial for the thorough sedimentation of impurities. When used in conjunction with the sludge scraper 10, the flow guide 11 further evenly distributes the wastewater, and the sludge scraper 10 can more effectively scrape the settled impurities towards the drain pipe 2, further improving discharge efficiency. The above structure optimizes the flow state of wastewater, enhances the overall performance of the sedimentation device, and effectively solves the problems of insufficient sedimentation and easy resuspension of impurities in the prior art.

[0035] In some examples, a multi-stage precipitation device is refined, for example, such as Figure 1 As shown, the guide component 11 of the multi-stage sedimentation device is generally cone-shaped, with a smaller top and a larger bottom, and its cone surface forms an inclined guide channel. The diameter of the larger end of the guide component 11 is larger than the diameter of the feed inlet 3, and it is fixed on the outer periphery of the rotating shaft 9, located above the feed end of the drain outlet 2.

[0036] When wastewater flows into sedimentation chamber 7 from inlet 3, it first impacts the conical surface of guide member 11. The conical surface guides the wastewater to disperse radially outward, forming an umbrella-like distribution, allowing the wastewater to flow evenly towards the edge area of ​​sedimentation chamber 7. As the wastewater spreads outward, the flow velocity gradually decreases, which is conducive to the rapid sedimentation of solid particles to the bottom of sedimentation chamber 7 under the action of gravity.

[0037] The conical structure of the flow guide 11 disperses the concentrated water flow into a uniform umbrella-shaped flow by changing the flow direction of the sewage, thus expanding the distribution area of ​​the sewage in the sedimentation chamber 7 and reducing the impact of excessively high local flow velocities on the sedimentation effect. The conical shape, which is smaller at the top and larger at the bottom, gradually weakens the kinetic energy of the sewage during diffusion, reducing the disturbance of the water flow to the settled impurities and preventing the re-suspension of impurities. The flow guide 11 guides the sewage flow towards the edge of the sedimentation chamber 7, making it easier for impurities to settle in the area near the sewage outlet 2, shortening the sedimentation path of the impurities and improving the sewage discharge efficiency. When used in conjunction with the sludge scraper 10, the uniformly distributed settled impurities are easier for the sludge scraper 10 to remove, enhancing the synergistic working ability of the entire sedimentation device and further improving the sedimentation effect and treatment efficiency.

[0038] In some examples, a multi-stage precipitation device is refined, for example, such as Figure 1As shown, the scraper 10 of the multi-stage sedimentation device is a plate-shaped component, with one end fixedly connected to the rotating shaft 9 and the other end extending outward. The extension direction of the scraper 10 is set at an angle to the axis of the rotating shaft 9 (i.e., the scraper 10 is inclined relative to the radial direction of the rotating shaft 9). The inclination direction of the scraper 10 is configured such that when the rotating shaft 9 rotates in a preset direction, the working surface of the scraper 10 (the surface in contact with the sedimented impurities) pushes the impurities in the sedimentation chamber 7 toward the direction closer to the rotating shaft 9.

[0039] When the rotating shaft 9 rotates, the sludge scraper 10 moves in a circular motion with the rotating shaft 9. Due to the angle between it and the axis, the sludge scraper 10 generates a radial thrust on the impurities that settle on the surface of the partition plate 6 or the bottom of the settling chamber 7 during the rotation process, causing the impurities to gather in the central area of ​​the rotating shaft 9 along the guiding direction of the sludge scraper 10, and finally gather near the drain pipe 2 for discharge.

[0040] The angle between the scraper 10 and the axis of the rotating shaft 9 creates a force component pointing towards the center of the shaft 9 during rotation. This force pushes impurities towards the discharge port 2, solving the problem that traditional scraper structures can only scrape horizontally and cannot effectively guide the directional movement of impurities. By concentrating impurities towards the center of the shaft 9, the distance between the impurities and the discharge port 2 is shortened, reducing the amount of impurities remaining in the sedimentation chamber 7 and improving discharge efficiency. The inclined scraper 10 design, combined with the rotational motion of the shaft 9, creates an active collection effect on impurities, preventing their accumulation at the edge of the sedimentation chamber 7, making it particularly suitable for the sedimentation treatment of high-concentration wastewater. This structure, by changing the movement trajectory of the scraper 10, achieves the directional pushing of impurities. Combined with the gravity guidance effect of the conical baffle 6, it further enhances the discharge capacity of the sedimentation device, reduces the frequency of manual intervention, and improves the automation and stability of equipment operation.

[0041] In some examples, a multi-stage precipitation device is refined, for example, such as Figures 1-5 As shown, a pre-screening box 12 is provided on the outside of the main body 1 of the multi-stage sedimentation device. The pre-screening box 12 has a pre-screening chamber 13, which is connected to the feed end of the feed inlet 3 through a pipe. A pre-screening element 14 is slidably arranged inside the pre-screening chamber 13. The pre-screening element 14 is a flat plate structure with screen holes evenly distributed on it.

[0042] After the wastewater enters the pre-screening chamber 13, it first flows through the pre-screening element 14. Impurities of a certain size are intercepted by the pre-screening element 14, while smaller particles and liquids pass through the screen holes into the feed inlet 3 and then flow into the sedimentation chamber 7 of the main body 1. The pre-screening element 14 can slide along the inner wall of the pre-screening chamber 13. By sliding the pre-screening element 14, its position in the pre-screening chamber 13 can be changed, making it easier to clean up the intercepted impurities.

[0043] The pre-screening box 12 and pre-screening element 14 enable pretreatment of wastewater. By intercepting larger impurities, the amount of impurities entering the sedimentation chamber 7 is reduced, thus lowering the burden on subsequent sedimentation treatment and improving sedimentation efficiency. The sliding structure of the pre-screening element 14 makes cleaning the intercepted impurities easier without disassembling the entire device, simplifying the maintenance process. The pre-screening process prevents the accumulation of large particles of impurities in the sedimentation chamber 7, reducing wear on the scraper element 10 and the guide element 11, and extending the service life of the equipment. Through pretreatment, the processing capacity and stability of the entire sedimentation device are improved, effectively solving the problems of easy clogging and low processing efficiency in existing sedimentation equipment.

[0044] In some examples, a multi-stage precipitation device is refined, for example, such as Figures 1-5 As shown, the multi-stage sedimentation device has two side-extension boxes 15 on the pre-screening box 12, located on opposite sides of the pre-screening box 12. The side-extension boxes 15 are fixedly connected to the pre-screening box 12, forming a side-extension chamber 16 that communicates with the pre-screening chamber 13. The pre-screening component 14 is a long, strip-shaped plate structure. The sliding direction of the pre-screening component 14 is perpendicular to the material movement direction, allowing it to slide between the inner walls of the pre-screening chamber 13 and the side-extension chamber 16. Three vertical plates 17 are spaced apart on the pre-screening component 14, extending vertically parallel to the material movement direction. Two vertical plates 17 are located at the two ends of the pre-screening component 14, and the third vertical plate 17 is fixed to the middle area of ​​the pre-screening component 14. The three vertical plates 17 divide the surface of the pre-screening component 14 into two pre-screening zones 18, each with evenly distributed screen holes.

[0045] When wastewater flows through the pre-screening component 14, it pushes the component to slide, aligning one of the pre-screening zones 18 with the material's inflow direction for screening. Larger impurities are trapped above the screen openings. At this time, the second pre-screening zone 18 is located within the side extension chamber 16 of the second side extension box 15. After a period of operation, an external force is applied to drive the pre-screening component 14 to slide, causing the second pre-screening zone 18 to gradually approach the pre-screening box 12 and align with the material's inflow direction. The first pre-screening zone 18 gradually moves away from the pre-screening box 12 and enters the side extension chamber 16 of the first side extension box 15, until the second pre-screening zone 18 is aligned with the material's inflow direction. At this point, the vertical plates 17 on both sides of the second pre-screening zone 18 are located at the connection points between the two side extension chambers 16 and the pre-screening chamber 13, thus disconnecting the side extension chambers 16 from the pre-screening chamber 13. This facilitates the treatment of impurities trapped in the first pre-screening zone 18 and prevents wastewater leakage from the pre-screening chamber 13.

[0046] The side extension box 15 and side extension chamber 16 provide extended sliding space for the pre-screening component 14, allowing the pre-screening component 14 to move the area where impurities are trapped out of the pre-screening chamber 13 without disassembling the equipment. This avoids affecting the normal screening process during cleaning and improves maintenance convenience. The spaced arrangement of the three vertical plates 17 divides the pre-screening component 14 into two independent pre-screening zones 18, facilitating alternating pre-screening operations between the two zones. This allows one pre-screening zone 18 to trap impurities while simultaneously cleaning the impurities trapped in the other zone, ensuring continuous and stable pre-screening operations.

[0047] The vertical plate 17, parallel to the material movement direction, enhances the rigidity of the pre-screening component 14, reduces deformation during sliding, and ensures the stability of the screening area. These features, through the partitioned design and sliding structure of the pre-screening component 14, improve the impurity retention efficiency in the pretreatment stage, simplify maintenance, and prevent large particles from clogging the screen holes or entering the sedimentation chamber 7. This provides cleaner material conditions for the subsequent sedimentation process, synergistically improving the overall processing capacity and reliability of the device.

[0048] In some examples, a multi-stage precipitation device is refined, for example, such as Figures 1-5 As shown, a slag discharge port 19 is opened at the bottom of the side-extension box 15 near the pre-screening box 12, and the slag discharge port 19 is connected to the side-extension chamber 16. When the pre-screening component 14 slides into the side-extension chamber 16, the intercepted impurities move with the pre-screening component 14 to above the slag discharge port 19. Through the slag discharge port 19, the impurities can be discharged from the side-extension chamber 16, realizing the automatic cleaning of the pre-screening component 14.

[0049] The arrangement of the side-extension chamber 15 and the slag discharge port 19 allows impurities trapped by the pre-screening element 14 to be transferred to the side-extension chamber 16 via the sliding pre-screening element 14 and discharged through the slag discharge port 19, eliminating the need to disassemble the pre-screening element 14 for cleaning and improving cleaning efficiency. The slag discharge port 19 is located at the bottom of the side-extension chamber 15 near the pre-screening chamber 12, utilizing gravity to facilitate impurity discharge and reduce impurity residue in the side-extension chamber 16. This structural design separates the pre-screening process from the slag discharge process, avoiding interference with the pre-screening chamber 13 during slag discharge and ensuring the continuity of the pre-screening process. The cooperation between the pre-screening chamber 12 and the pre-screening element 14 further improves the wastewater pretreatment process, enhances the overall efficiency and stability of the sedimentation device, and effectively solves the problem of inconvenient maintenance of sedimentation equipment in existing technologies.

[0050] In some examples, a multi-stage precipitation device is refined, for example, such as Figures 1-5As shown, a gate 20 is installed at the slag discharge port 19 of the multi-stage sedimentation device, and the gate 20 is slidably connected to the side extension chamber 15. When it is necessary to discharge the impurities intercepted by the pre-screening element 14, the sliding gate 20 opens the slag discharge port 19, connecting the side extension chamber 16 to the outside, and the impurities are discharged through the slag discharge port 19; after the slag discharge is completed, the sliding gate 20 closes the slag discharge port 19 to prevent sewage leakage.

[0051] The gate 20 enables controllable opening and closing of the slag discharge port 19, allowing for timely discharge of impurities as needed while preventing wastewater leakage. Controlling the slag discharge process via the sliding gate 20 is simple and convenient, requiring no complex equipment or processes. The gate 20, in conjunction with the slag discharge port 19, further enhances the controllability and stability of the slag discharge process, ensuring effective removal of impurities. This structural design reduces manual intervention, increases the automation level of the equipment, lowers maintenance costs, and effectively solves the problems of inconvenient slag discharge and easy leakage in existing sedimentation equipment.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A multi-stage sedimentation device, characterized in that, The main body includes a main body and a drain outlet (2), a feed inlet (3), and a water outlet (4) disposed on the main body (1). The main body (1) has a chamber (5) for sedimentation. It also includes: N partitions (6) are arranged in the chamber (5) from top to bottom and divide the chamber (5) into (N+1) sedimentation chambers (7) for sedimentation. Two adjacent sedimentation chambers (7) are connected by an overflow pipe (8). Each sedimentation chamber (7) has a drain pipe (2) connected to its bottom. The feed pipe (3) is connected to the uppermost sedimentation chamber (7), and the water outlet (4) is connected to the lowermost sedimentation chamber (7).

2. The multi-stage sedimentation device according to claim 1, characterized in that, The partition (6) is cone-shaped as a whole, with the small end of the cone pointing downwards.

3. The multi-stage sedimentation device according to claim 2, characterized in that, Also includes: The rotating shaft (9) is rotatably connected to the suspended support (21) located at the upper end of the chamber (5) and passes through all the sedimentation chambers (7); A scraper (10) is provided on the rotating shaft (9) for scraping the impurities settled at the bottom of the sedimentation chamber (7). At least one scraper (10) is provided in each sedimentation chamber (7).

4. The multi-stage sedimentation device according to claim 3, characterized in that, Also includes: A guide (11) is disposed on the outer periphery of the rotating shaft (9), located at the discharge end of the feed inlet (3) and above the feed end of the drain pipe (2). The guide (11) is used to receive the material conveyed to the chamber (5) by the feed inlet (3) and guide the material to disperse away from the rotating shaft (9). At least one guide (11) is provided in each sedimentation chamber (7).

5. A multi-stage sedimentation device according to claim 4, characterized in that, The guide (11) is cone-shaped and is generally smaller at the top and larger at the bottom.

6. The multi-stage sedimentation device according to claim 3, characterized in that, The extension direction of the scraper (10) is set at an angle to the axis of the rotating shaft (9). The scraper (10) is configured to push the impurities settled in the sedimentation chamber (7) towards the direction of the rotating shaft (9) after rotation.

7. A multi-stage precipitation apparatus according to any one of claims 1-6, characterized in that, Also includes: A pre-screening box (12) is located outside the main body (1) and connected to the feed end of the feed inlet (3). The pre-screening box (12) has a pre-screening chamber (13). A pre-screening component (14) is slidably disposed in the pre-screening chamber (13). The pre-screening component (14) has sieve holes and is used to intercept some impurities with a certain volume in the material.

8. A multi-stage sedimentation device according to claim 7, characterized in that, Also includes: Two side-extension boxes (15) are respectively disposed on the left and right sides of the pre-screening box (12). The side-extension box (15) has a side-extension chamber (16) communicating with the pre-screening chamber (13). The pre-screening component (14) slides simultaneously in the pre-screening chamber (13) and at least one of the side-extension chambers (16). Three vertical plates (17) are spaced apart on the pre-screening member (14) and divide the pre-screening member (14) into two pre-screening zones (18). The extension direction of the vertical plates (17) is parallel to the vertical direction and parallel to the movement direction of the material through the pre-screening box (12). The two vertical plates (17) that are furthest apart are configured such that when the pre-screening member (14) is located in the side extension chamber (16), the vertical plates (17) abut against the side wall of the side extension chamber (16).

9. A multi-stage sedimentation device according to claim 8, characterized in that, The bottom of the side-extension box (15) near the pre-screen box (12) has a slag discharge port (19) that communicates with the side-extension chamber (16).

10. A multi-stage sedimentation device according to claim 9, characterized in that, A gate (20) is slidably provided at the slag discharge port (19), and is configured such that after the gate (20) slides, the side extension chamber (16) communicates with the outside and discharges the impurities intercepted by the pre-screening component (14).

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