Lake water multi-stage sedimentation filtering device

Abstract

The application provides a lake water multi-stage sedimentation filtering device which can prolong the residence time of lake water, realize multi-stage filtering and improve the sedimentation filtering effect; the device comprises a first filtering assembly and a second filtering assembly which are connected in communication, a water conveying pipeline is connected between the first filtering assembly and the second filtering assembly; the first filtering assembly is a cylindrical filtering structure and internally integrated with a spiral filtering component to perform primary impurity interception and filtering treatment on the incoming lake water; the second filtering assembly is a box type multi-stage flow guide filtering structure and internally surrounded to form a plurality of communicated water storage filtering cavities, the water outlet end of the water conveying pipeline is correspondingly arranged above any water storage filtering cavity and forms a counterclockwise or clockwise annular flow guide path along the plurality of water storage filtering cavities, and the water storage filtering cavity located at the end of the annular flow guide path is connected with a water outlet pipe.

Description

Technical Field

[0001] This invention relates to the field of lake water filtration technology, specifically to a multi-stage sedimentation filtration device for lake water. Background Technology

[0002] As an important landscape water body and backup water source, the lake water is affected by the input of external pollution and the release of internal pollutants during long-term operation. A large amount of silt, phytoplankton and humic pollutants will be suspended in the water. This will not only lead to a decrease in water transparency and affect the landscape effect, but also easily cause water quality deterioration, threatening the safety of aquatic ecology and water supply.

[0003] Existing lake water purification devices are mostly single-stage filtration structures with short filtration retention times. They have limited effectiveness in settling and retaining fine suspended particles, and the impurities retained by the filter are difficult to clean. After long-term operation, the filter structure is prone to clogging, which greatly reduces the filtration and purification efficiency and makes it difficult to meet the long-term and stable operation requirements of large-scale lake water treatment. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a multi-stage sedimentation filtration device for lake water, which can extend the residence time of lake water, achieve multi-stage filtration, and improve the filtration and sedimentation effect.

[0005] The present invention adopts the following technical solution: a multi-stage sedimentation filtration device for lake water, comprising a primary filtration component and a secondary filtration component connected in series, wherein a water supply pipeline connects the primary filtration component and the secondary filtration component; the primary filtration component is a cylindrical filtration structure, and integrates a spiral filtration component inside to perform primary impurity interception and filtration treatment on the incoming lake water; the secondary filtration component is a box-type multi-stage flow-guiding filtration structure, and the interior is enclosed to form several interconnected water storage and filtration chambers; the outlet end of the water supply pipeline is correspondingly located above any of the water storage and filtration chambers, and forms a counterclockwise or clockwise annular flow-guiding path along the several water storage and filtration chambers; the water storage and filtration chamber located at the end of the annular flow-guiding path is connected to an outlet pipe.

[0006] Furthermore, the top of the primary filter assembly is provided with an inlet for receiving the lake water to be purified, and the water supply pipeline is connected to the bottom of the primary filter assembly. Furthermore, a fixed column is vertically installed inside the primary filter assembly, and the spiral filter component is a spiral filter plate. The inner circumference of the spiral filter plate is connected to the fixed column, and the outer circumference of the spiral filter plate is connected to the inner wall of the primary filter assembly. Filter holes are uniformly provided on the spiral filter plate along the spiral trajectory. Furthermore, the primary filter assembly located below the spiral filter plate has a receiving plate inside for receiving impurities. The receiving plate has water filtering holes, and the lower outer wall of the primary filter assembly has a drain outlet. The receiving plate is inclined towards the drain outlet. Furthermore, guide rails are installed on both sides of the drain outlet, and the sealing opening and closing door is installed on the drain outlet via the guide rails; the diameter of the filter hole is larger than the diameter of the water filter hole; Furthermore, the secondary filtration assembly is surrounded by a cross-shaped partition plate to form four sequentially connected water storage and filtration chambers, which are divided into a first water storage and filtration chamber, a second water storage and filtration chamber, a third water storage and filtration chamber, and a fourth water storage and filtration chamber. The outlet end of the water supply pipeline is located above the first water storage and filtration chamber, and the outlet pipe is connected to the fourth water storage and filtration chamber. Furthermore, each of the first, second, and third water storage and filtration chambers is provided with a baffle plate, which together with the corresponding water storage and filtration chambers forms a baffle processing chamber. The lower part of the baffle plate is provided with several lower water inlets, and each of the four water storage and filtration chambers is provided with a circulation hole above the partition plate, which is connected to the baffle processing chamber. Furthermore, a water-passing plate is installed on the baffle plate located in the baffle treatment cavity, and the filter material is placed on the water-passing plate. The height of the water-passing plate is greater than the height of the lower water inlet. Furthermore, the lower parts of the first water storage and filtration chamber, the second water storage and filtration chamber, the third water storage and filtration chamber, and the fourth water storage and filtration chamber are all connected to a drain pipe. Furthermore, the filter material comprises quartz sand, anthracite, and activated carbon arranged sequentially from bottom to top, and the particle size of the quartz sand, anthracite, and activated carbon gradually decreases in that order.

[0007] The beneficial effects of this invention are that, through the setting of a primary filtration component and a secondary filtration component, the lake water to be purified first passes through the primary filtration component to achieve primary impurity interception and filtration treatment, and then passes through multiple water storage filtration chambers for full filtration and slow release purification before being discharged. Thus, through the combination of two-stage layered filtration and a multi-chamber circulation guide structure, multi-stage filtration can be achieved, and by extending the lake water residence time through multiple deflections, the overall effect and filtration accuracy of lake water filtration and purification can be effectively improved, which has good application value. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the assembly structure of a multi-stage sedimentation filtration device for lake water according to the present invention; Figure 2 This is a schematic diagram of the structure of a multi-stage sedimentation and filtration device for lake water after partial concealment, according to the present invention. Figure 3 This is a schematic diagram of the assembly structure of the first-stage filtration component in a multi-stage sedimentation filtration device for lake water according to the present invention. Figure 4 This is a schematic diagram of the structure of a first-stage filtration component in a multi-stage sedimentation filtration device for lake water, after partial concealment, according to the present invention. Figure 5 This is a schematic diagram of the baffle plate in a multi-stage sedimentation filtration device for lake water according to the present invention; Figure 6 This is a schematic diagram of the flow direction of lake water in a multi-stage sedimentation and filtration device for lake water according to the present invention; Figure 7 This is a schematic diagram of the flow of lake water in four water storage and filtration chambers in a multi-stage sedimentation filtration device for lake water according to the present invention.

[0009] In the diagram: 1. Primary filtration assembly; 11. Inlet; 12. Fixed column; 13. Spiral filter plate; 14. Receiving plate; 15. Guide rail; 16. Sealing opening and closing door; 2. Water supply connection pipeline; 3. Secondary filtration assembly; 31. Divider plate; 32. Circulation hole; 41. First water storage and filtration chamber; 42. Second water storage and filtration chamber; 43. Third water storage and filtration chamber; 44. Fourth water storage and filtration chamber; 5. Baffle treatment chamber; 51. Lower inlet; 52. Water flow plate; 53. Baffle plate; 6. Outlet pipe; 7. Sewage pipe; 8. Sewage outlet. Detailed Implementation

[0010] The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the invention in a schematic manner, and therefore only show the components relevant to the invention.

[0011] like Figures 1-7 As shown, a multi-stage sedimentation filtration device for lake water according to the present invention includes a primary filtration component 1 and a secondary filtration component 3 connected together. A water supply pipeline 2 connects the primary filtration component 1 and the secondary filtration component 3 to achieve step-by-step flow filtration of the water. The primary filtration component 1 is a cylindrical filtration structure and integrates a spiral filtration component inside to perform primary impurity interception and filtration treatment on the incoming lake water. The secondary filtration component 3 is a box-type multi-stage flow filtration structure, and its interior is enclosed to form several interconnected water storage and filtration chambers. The outlet end of the water supply pipeline 2 is correspondingly located above any water storage and filtration chamber, and forms a counterclockwise or clockwise (counterclockwise in this embodiment) annular flow path along the several water storage and filtration chambers. The water storage and filtration chamber located at the end of the annular flow path is connected to an outlet pipe 6.

[0012] The top of the primary filter component 1 is provided with an inlet 11 for receiving lake water to be purified, and the water supply pipeline 2 is connected to the bottom of the primary filter component 1.

[0013] The primary filter assembly 1 has a vertically mounted fixed column 12 inside. The spiral filter component is a spiral filter plate 13. The inner circumference of the spiral filter plate 13 is connected to the fixed column 12, and the outer circumference of the spiral filter plate 13 is connected to the inner wall of the primary filter assembly 1. Filter holes are evenly distributed along the spiral trajectory on the spiral filter plate 13. To effectively separate impurities filtered in the primary stage, a receiving plate 14 for receiving impurities is provided inside the primary filter assembly 1 located below the spiral filter plate 13. The receiving plate 14 has water filtering holes. A drain port 8 is opened on the lower outer wall of the primary filter assembly 1, and the receiving plate 14 is inclined towards the drain port 8. Guide slides are installed on both sides of the drain port 8. The guide rail 15 and the sealed opening and closing door 16 are installed at the drain outlet 8. The diameter of the filter holes is larger than that of the water filter holes. In this way, as the lake water flows down along the spiral filter plate 13, large particles of impurities will be intercepted by the spiral filter plate 13, slide down along the inclined spiral trajectory, and finally fall on the receiving plate 14 and slide along the inclined receiving plate 14 to the drain outlet 8. The intercepted impurities can be cleaned out by periodically opening the sealed opening and closing door 16. The water can then pass smoothly through the filter holes on the spiral filter plate 13 and the water filter holes on the receiving plate 14, collect at the bottom of the first-stage filter assembly 1, and be transported to the second-stage filter assembly 3 through the water supply connecting pipe 2.

[0014] The sealed opening and closing door 16 can move up and down along the guide rail 15 to achieve opening and closing; of course, the sewage outlet can also be opened and closed by other existing methods, as long as it can achieve the purpose of opening and closing.

[0015] During use, the lake water to be purified is first injected into the primary filter assembly 1 at the inlet 11. Since there is a spiral filter plate 13 inside, the lake water will flow downward along the spiral trajectory of the spiral filter plate 13. Impurities will be intercepted by the filter holes on the spiral trajectory and gradually move downward along the surface of the spiral filter plate 13. The filtered lake water will then enter the spiral area through the filter holes and flow downward to the receiving plate 14. The receiving plate 14 collects the lake water after preliminary filtration and transports it to the bottom of the primary filter assembly 1 through the filter holes. Then, it is pumped into the secondary filter assembly 3 by the water supply connecting pipe 2. The intercepted large particles of impurities will fall onto the receiving plate 14 along the spiral trajectory and slide down the inclined receiving plate 14 to the sewage outlet. The impurities can be cleaned by periodically opening the sealing opening and closing door 16, thus completing the sludge discharge operation of the primary filtration.

[0016] The secondary filtration assembly 3 is surrounded by a cross-shaped partition plate 31 to form four sequentially connected water storage and filtration chambers, which are divided into a first water storage and filtration chamber 41, a second water storage and filtration chamber 42, a third water storage and filtration chamber 43, and a fourth water storage and filtration chamber 44. The outlet end of the water supply connecting pipe 2 is located above the first water storage and filtration chamber 41, and the outlet pipe 6 is connected to the fourth water storage and filtration chamber 44.

[0017] Each of the first water storage and filtration chamber 41, the second water storage and filtration chamber 42, and the third water storage and filtration chamber 43 is equipped with a baffle plate 53. The baffle plate 53 and the corresponding water storage and filtration chamber enclose each other to form a baffle treatment chamber 5. The lower part of the baffle plate 53 is provided with several lower water inlets 51. Above the partition plate 31 located in the four water storage and filtration chambers, there is a circulation hole 32. The circulation hole 32 is connected to the baffle treatment chamber 5. The baffle treatment chamber 5 covers the circulation hole 32. The lake water entering the secondary filtration component 3 flows into the baffle treatment chamber 5 from the lower water inlet 51 below the baffle treatment chamber 5. After flowing upward, it flows out from the circulation hole 32 at the top and enters the next water storage and filtration chamber. The residence time of the lake water is extended by the baffle, which also allows small particulate impurities in the water to settle fully.

[0018] A flow plate 52 is installed on the baffle plate 53 located in the baffle treatment chamber 5. Filter media (not shown in the figure) is placed on the flow plate 52. The height of the flow plate 52 is greater than the height of the lower inlet 51. After the lake water enters from the lower inlet 51, it needs to flow upward through the flow plate 52 to reach the circulation hole 32 at the top. During the flow, the lake water will pass through the filter media to complete the filtration, thereby further intercepting and settling impurities.

[0019] In other words, each time lake water enters a water storage and filtration chamber, the water level inside the chamber gradually rises. As lake water continues to be injected, the water level in the baffled treatment chamber 5 also rises until the water level reaches the circulation hole 32 and enters the next water storage and filtration chamber. The baffled circulation flow direction is as follows: Figure 6-7 As shown, the lake water flows counterclockwise through the first water storage and filtration chamber 41, the second water storage and filtration chamber 42, the third water storage and filtration chamber 43, and the fourth water storage and filtration chamber 44. After passing through the three baffle treatment chambers 5 to complete the staged filtration and sedimentation, the water flows into the final fourth water storage and filtration chamber 44 and is finally discharged through the outlet pipe 6 on the outside of the fourth water storage and filtration chamber 44, completing the entire multi-stage sedimentation and filtration operation.

[0020] During the filtration process, the settled impurities will collect at the bottom of each water storage and filtration chamber. The lower part of the first water storage and filtration chamber 41, the second water storage and filtration chamber 42, the third water storage and filtration chamber 43, and the fourth water storage and filtration chamber 44 are all connected to a drain pipe 7. By periodically opening the drain pipe 7, the impurities deposited in the water storage and filtration chamber can be discharged. The cleaning operation can be completed without opening the secondary filter component 3, which is very convenient.

[0021] The filter media consists of quartz sand, anthracite, and activated carbon arranged sequentially from bottom to top, with the particle size of the quartz sand, anthracite, and activated carbon gradually decreasing in size. When lake water enters the baffled treatment chamber 5, it passes through the quartz sand, anthracite, and activated carbon in sequence. First, the large-particle quartz sand traps larger sedimentary impurities, then the anthracite adsorbs medium-particle impurities, and finally the activated carbon adsorbs pigments, odors, and tiny impurities in the water, completing multi-stage filtration and adsorption to achieve clear water.

[0022] In this invention, the incoming lake water is first subjected to primary impurity interception and filtration treatment by the primary filtration component 1. The secondary filtration component 3 is internally arranged to form four interconnected water storage and filtration chambers (i.e., the first water storage and filtration chamber 41, the second water storage and filtration chamber 42, the third water storage and filtration chamber 43, and the fourth water storage and filtration chamber 44). After the filtered lake water is initially purified by the primary filtration component 1, it is introduced into the first water storage and filtration chamber 41 through the water supply connecting pipe 2, and forms a counterclockwise annular flow path along the first water storage and filtration chamber 41, the second water storage and filtration chamber 42, the third water storage and filtration chamber 43, and the fourth water storage and filtration chamber 44. After being fully filtered and slowly purified inside the multi-stage water storage and filtration chambers, it is discharged outward.

[0023] Figure 6 , Figure 7 The direction of the middle arrow indicates the direction of the lake water flow.

[0024] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A multi-stage sedimentation filtration device for lake water, characterized in that: The system includes a primary filtration assembly and a secondary filtration assembly that are connected to each other, with a water supply pipeline connecting the primary and secondary filtration assemblies. The primary filtration assembly is a cylindrical filtration structure with an integrated spiral filtration component to perform initial impurity interception and filtration of the incoming lake water. The secondary filtration assembly is a box-type multi-stage flow-guiding filtration structure with several interconnected water storage and filtration chambers inside. The outlet end of the water supply pipeline is located above any of the water storage and filtration chambers, forming a counterclockwise or clockwise annular flow-guiding path along the several water storage and filtration chambers. The water storage and filtration chamber at the end of the annular flow-guiding path is connected to an outlet pipe.

2. The multi-stage sedimentation filtration device for lake water according to claim 1, characterized in that: The top of the primary filtration component is provided with an inlet for receiving lake water to be purified, and the water supply pipeline is connected to the bottom of the primary filtration component.

3. The multi-stage sedimentation filtration device for lake water according to claim 1, characterized in that: The primary filter assembly has a vertically installed fixed column inside. The spiral filter component is a spiral filter plate. The inner circumference of the spiral filter plate is connected to the fixed column, and the outer circumference of the spiral filter plate is connected to the inner wall of the primary filter assembly. The spiral filter plate is uniformly provided with filter holes along the spiral trajectory.

4. The multi-stage sedimentation filtration device for lake water according to claim 3, characterized in that: The primary filter assembly located below the spiral filter plate has a receiving plate inside for receiving impurities. The receiving plate has water filtering holes, and a drain outlet is opened on the lower outer wall of the primary filter assembly. The receiving plate is inclined towards the drain outlet.

5. The multi-stage sedimentation filtration device for lake water according to claim 4, characterized in that: Guide rails are installed on both sides of the sewage outlet, and the sealing opening and closing door is installed on the sewage outlet through the guide rails; the diameter of the filter hole is larger than the diameter of the water filter hole.

6. The multi-stage sedimentation filtration device for lake water according to claim 1, characterized in that: The secondary filtration assembly is formed by four sequentially connected water storage and filtration chambers enclosed by a cross-shaped partition plate. These chambers are divided into a first water storage and filtration chamber, a second water storage and filtration chamber, a third water storage and filtration chamber, and a fourth water storage and filtration chamber. The outlet end of the water supply pipeline is located above the first water storage and filtration chamber, and the outlet pipe is connected to the fourth water storage and filtration chamber.

7. A multi-stage sedimentation filtration device for lake water according to claim 6, characterized in that: Each of the first, second, and third water storage and filtration chambers is equipped with a baffle plate. The baffle plate and the corresponding water storage and filtration chamber enclose a baffle processing chamber. The lower part of the baffle plate is provided with several lower water inlets. Above the partition plate located in each of the four water storage and filtration chambers, there is a circulation hole. The circulation hole is connected to the baffle processing chamber.

8. A multi-stage sedimentation filtration device for lake water according to claim 7, characterized in that: A water-passing plate is installed on the baffle plate located in the baffle treatment chamber, and filter media is placed on the water-passing plate. The height of the water-passing plate is greater than the height of the lower water inlet.

9. A multi-stage sedimentation filtration device for lake water according to claim 6, characterized in that: The lower parts of the first, second, third, and fourth water storage and filtration chambers are all connected to drain pipes.

10. A multi-stage sedimentation filtration device for lake water according to claim 8, characterized in that: The filter media comprises quartz sand, anthracite, and activated carbon arranged sequentially from bottom to top, with the particle size of the quartz sand, anthracite, and activated carbon gradually decreasing in size.

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