Multi-stage overflow precipitation type filtering device

Abstract

The utility model belongs to the technical field of filtering devices, and particularly discloses a multi-stage overflow precipitation type filtering device which comprises a filtering box body, a plurality of overflow partition plates are arranged in the filtering box body, and all the overflow partition plates are arranged in a row at intervals and sequentially divide the interior of the filtering box body from a water inlet end to a water outlet end to form a plurality of stages of precipitation chambers. The depth of the overflow partition plates is lower than that of the filtering box body, the settling chamber between every two adjacent overflow partition plates is partitioned by a flow guide partition plate in the water flow filtering direction to form two areas which are communicated with each other, and the flow guide partition plate is higher than the two corresponding adjacent overflow partition plates. According to the multi-stage overflow precipitation type filtering device disclosed by the utility model, through the synergistic effect of multi-stage precipitation and a flow guide structure, the filtering efficiency is remarkably improved, impurities and harmful substances in a water body are effectively removed, the cleaning period is prolonged, and a more efficient, convenient and reliable solution is provided for water body purification in various fields.

Description

Technical Field

[0001] This utility model belongs to the technical field of filtration devices, and in particular relates to a multi-stage overflow sedimentation filtration device. Background Technology

[0002] In various water purification and treatment scenarios, such as aquaculture, landscape water body maintenance, and small-scale industrial wastewater pretreatment, filtration devices play a crucial role as key equipment for ensuring water quality. With increasing demands for higher quality living environments and the more refined development of industries like aquaculture, higher requirements are being placed on the performance and ease of use of filtration devices.

[0003] Existing filtration devices, such as single sedimentation tanks and simple filter screens, often have poor filtration effects when treating liquids containing impurities. They are unable to effectively remove impurities and harmful substances from the water. At the same time, they have a short cleaning cycle (about once every 20 days), and thus cannot meet the purification needs of various water bodies.

[0004] Therefore, the inventors dedicated themselves to designing a filtration device to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a multi-stage overflow sedimentation filtration device, which can not only significantly improve filtration efficiency and effectively remove impurities and harmful substances from water, but also extend the cleaning cycle and meet the purification needs of various water bodies.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A multi-stage overflow sedimentation filtration device includes a filter housing with multiple overflow baffles inside. All the overflow baffles are arranged in a row at intervals, and the interior of the filter housing is sequentially separated from the inlet to the outlet to form multi-stage sedimentation chambers. All the overflow baffles are lower than the depth of the filter housing. The sedimentation chambers between two adjacent overflow baffles are separated by flow guide baffles along the water flow filtration direction to form two interconnected regions. The flow guide baffles are set higher than the two adjacent overflow baffles.

[0008] As an improvement to the multi-stage overflow sedimentation filtration device of this utility model, except for the last sedimentation chamber located in the direction of the water outlet, all other sedimentation chambers are equipped with sewage pipes.

[0009] As an improvement of the multi-stage overflow sedimentation filtration device of this utility model, each stage of the sedimentation chamber is provided with a sedimentation tank at the bottom, and the sewage pipe is connected to the sedimentation tank at the bottom of the corresponding stage sedimentation chamber. The two areas formed by the flow guide baffle in the same sedimentation chamber are connected to each other through the corresponding sedimentation tank.

[0010] As an improvement of the multi-stage overflow sedimentation filtration device of this utility model, the inner bottom wall of the filter box is provided with a long strip-shaped groove along the water flow filtration direction, and the groove is separated by all the overflow baffles to form all the sedimentation tanks.

[0011] As an improvement of the multi-stage overflow sedimentation filter device of this utility model, the inner bottom wall of each sedimentation chamber is inclined downward toward the side of the corresponding sedimentation tank to form a pair of slag guiding slopes, and the sedimentation tank in the same sedimentation chamber is located between the corresponding pair of slag guiding slopes.

[0012] As an improvement of the multi-stage overflow sedimentation filtration device of this utility model, the inner bottom wall of the filter box is V-shaped, and the parts where all the overflow baffles and all the flow guide baffles meet the inner bottom wall of the filter box are designed in a V-shape.

[0013] As an improvement of the multi-stage overflow sedimentation filtration device of this utility model, the first-stage sedimentation chamber located in the water inlet direction contains multiple layers of filter blankets.

[0014] As an improvement of the multi-stage overflow sedimentation filtration device of this utility model, a filter plate is provided directly above the first-stage sedimentation chamber in the direction of the water inlet, and a sewage inlet pipe is provided on the side wall of the water inlet of the filter box, with the outlet end of the sewage inlet pipe located directly above the filter plate.

[0015] As an improvement of the multi-stage overflow sedimentation filter device of this utility model, the first guide baffle located in the water inlet direction is fixedly connected to the side wall of the filter box through a fixing plate, and the filter disc is installed on the through hole of the fixing plate.

[0016] As an improvement of the multi-stage overflow sedimentation filtration device of this utility model, a clear water pipe is provided on the side wall of the water outlet end of the filter box, and the clear water pipe is connected to the last stage sedimentation chamber located in the direction of the water outlet end. The bottom of the filter box is provided with a pipe cover for covering the sewage pipe.

[0017] Compared with existing technologies, this utility model's multi-stage overflow sedimentation filtration device employs a multi-stage sedimentation structure. By setting multiple overflow baffles arranged in a row at intervals within the filter box, the interior of the filter box is sequentially divided from the inlet to the outlet, forming multiple sedimentation chambers. This creates layers of barriers for water purification. Each sedimentation chamber can initially intercept and settle pollutants in the water, greatly reducing the burden on subsequent filtration stages. Simultaneously, guide baffles separate the sedimentation chambers between adjacent overflow baffles along the water flow filtration direction, forming two interconnected areas. The guide baffles are positioned higher than their corresponding adjacent overflow baffles, efficiently guiding the orderly flow of water and creating a stable flow state between the multi-stage sedimentation chambers, further improving sedimentation efficiency. Through the synergistic effect of multi-stage sedimentation and the guide structure, filtration efficiency is significantly improved, effectively removing impurities and harmful substances from the water and extending the cleaning cycle (approximately once every 120 days). This provides a more efficient, convenient, and reliable solution for water purification in various fields. Attached image description:

[0018] Figure 1 This is a three-dimensional enlarged view of the multi-stage overflow sedimentation filter device of this utility model in the open state;

[0019] Figure 2 This is an exploded perspective view of the multi-stage overflow sedimentation filter device of this utility model;

[0020] Figure 3 This is an enlarged cross-sectional view of the multi-stage overflow sedimentation filter device of this utility model;

[0021] Figure 4 This is another enlarged cross-sectional view of the multi-stage overflow sedimentation filter device of this utility model;

[0022] Figure 5 This is a three-dimensional enlarged view of the filter box in this utility model;

[0023] Figure 6 This is another three-dimensional enlarged view of the filter box in this utility model;

[0024] Figure 7 This is a three-dimensional sectional enlarged view of the filter box in this utility model.

[0025] Illustration:

[0026] 1. Filter box; 11. Wastewater inlet pipe; 12. First drain pipe; 13. Second drain pipe; 14. Third drain pipe; 15. Clean water pipe; 16. Pipe cover; 17. Top cover; 2. Overflow baffle; 3. Flow guide baffle; 4. First sedimentation chamber; 41. Second sedimentation chamber; 42. Third sedimentation chamber; 43. Fourth sedimentation chamber; 44. First sedimentation tank; 45. Second sedimentation tank; 46. Third sedimentation tank; 47. Fourth sedimentation tank; 48. Sludge guide slope; 5. Filter blanket; 6. Fixing plate; 61. Through hole; 62. Filter disc. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below with reference to the accompanying drawings. The drawings are for reference and illustration only and do not constitute a limitation on the scope of patent protection of this utility model.

[0028] Reference Figures 1 to 7 A multi-stage overflow sedimentation filtration device includes a filter box 1. The filter box 1 is provided with multiple overflow baffles 2. All overflow baffles 2 are arranged in a row at intervals and sequentially divide the interior of the filter box 1 from the water inlet to the water outlet to form a multi-stage sedimentation chamber. All overflow baffles 2 are lower than the depth of the filter box 1. The sedimentation chamber between two adjacent overflow baffles 2 is separated by a flow guide baffle 3 along the water flow filtration direction to form two interconnected areas. The flow guide baffle 3 is set higher than the corresponding two adjacent overflow baffles 2.

[0029] Reference Figure 5 , Figure 6 and Figure 7 The filter box 1 is rectangular in shape with a hollow top and a long strip protruding at the bottom. The left end of the filter box 1 is its water inlet and the right end is its water outlet. A sewage inlet pipe 11 is provided on the upper left side wall of the water inlet of the filter box 1, and a clean water pipe 15 is provided on the right side wall of the water outlet of the filter box 1. A long strip groove is provided on the inner bottom wall of the filter box 1 along the water flow filtration direction. The groove corresponds to the long strip protruding part at the bottom of the filter box 1. The inner bottom wall of the filter box 1 is V-shaped, and the groove is located in the middle of the bottom of the filter box 1.

[0030] Reference Figure 3 , Figure 4 , Figure 5 and Figure 7This utility model preferably uses three overflow baffles 2 and two guide baffles 3. The three overflow baffles 2 are arranged in a row from left to right at intervals. The three overflow baffles 2 sequentially divide the interior of the filter box 1 from the water inlet to the water outlet to form four sedimentation chambers. The four sedimentation chambers are specifically a first-stage sedimentation chamber 4, a second-stage sedimentation chamber 41, a third-stage sedimentation chamber 42, and a fourth-stage sedimentation chamber 43. The first-stage sedimentation chamber 4, the second-stage sedimentation chamber 41, the third-stage sedimentation chamber 42, and the fourth-stage sedimentation chamber 43 are arranged sequentially along the water flow filtration direction of the filter box 1. The first overflow baffle 2 and the inner wall of the filter box 1 together form the first-stage sedimentation chamber 4. The first and second overflow baffles 2 and the inner wall of the filter box 1 together form the second-stage sedimentation chamber. The first stage sedimentation chamber 41, the second and third overflow baffles 2, and the inner wall of the filter box 1 together form the third-stage sedimentation chamber 42. The third overflow baffle 2 and the inner wall of the filter box 1 together form the fourth-stage sedimentation chamber 43. The sedimentation chambers between two adjacent overflow baffles 2 (i.e., the second-stage sedimentation chamber 41 and the third-stage sedimentation chamber 42) are separated by guide baffles 3 along the water flow filtration direction to form two interconnected areas. Specifically, the second-stage sedimentation chamber 41 is separated by the first guide baffle 3 along the water flow filtration direction to form two interconnected areas, and the third-stage sedimentation chamber 42 is also separated by the second guide baffle 3 along the water flow filtration direction to form another two interconnected areas. A sedimentation tank is provided at the bottom of each sedimentation chamber. In this embodiment, the first-stage sedimentation chamber... The bottom of the filter chamber 41 is specifically provided with a first sedimentation tank 44, the bottom of the second sedimentation chamber 41 is specifically provided with a second sedimentation tank 45, the bottom of the third sedimentation chamber 42 is specifically provided with a third sedimentation tank 46, and the bottom of the fourth sedimentation chamber 43 is specifically provided with a fourth sedimentation tank 47. The three overflow baffles 2 separate the elongated grooves on the bottom wall of the filter chamber 1 from left to right (that is, the lower end of each overflow baffle 2 is located in the groove, separating the grooves), forming the first sedimentation tank 44, the second sedimentation tank 45, the third sedimentation tank 46, and the fourth sedimentation tank 47 in sequence. The two areas formed by the flow guide baffles 3 in the same sedimentation chamber are connected to each other through the corresponding sedimentation tanks. In this embodiment, the second sedimentation chamber 41 is separated by the first flow guide baffle 3 to form left and right sedimentation tanks. The filter housing 1 has two zones connected by a second sedimentation tank 45. The third sedimentation chamber 42 is separated by a second flow guide baffle 3 into two other zones, which are connected by a third sedimentation tank 46. In order to guide the impurities in each sedimentation chamber to the corresponding sedimentation tank, the inner bottom wall of each sedimentation chamber is inclined downward toward the side of the corresponding sedimentation tank to form a pair of slag guiding slopes 48. The sedimentation tanks in the same sedimentation chamber are located between the corresponding pair of slag guiding slopes 48. All overflow baffles 2 and all flow guide baffles 3 are designed in a V-shape with the inner bottom wall of the filter housing 1. The clear water pipe 15 is located on the right side wall of the filter housing 1 and is connected to the last sedimentation chamber (i.e., the fourth sedimentation chamber 43) located in the direction of the water outlet.

[0031] Reference Figure 6 and Figure 7 To facilitate the discharge of impurities from each sedimentation chamber to the outside of the filter device, all sedimentation chambers except the last sedimentation chamber located at the outlet are equipped with drain pipes. In this embodiment, the first sedimentation chamber 4 is equipped with a first drain pipe 12, the second sedimentation chamber 41 is equipped with a second drain pipe 13, and the third sedimentation chamber 42 is equipped with a third drain pipe 14. The first drain pipe 12, the second drain pipe 13, and the third drain pipe 14 are all L-shaped and located at the bottom of the filter box 1. The extraction ends of the first drain pipe 12, the second drain pipe 13, and the third drain pipe 14 are respectively located in the first sedimentation tank 44. The front sidewall, the rear sidewall of the second sedimentation tank 45, and the rear sidewall of the third sedimentation tank 46 are provided with a first drain pipe 12 connected to the first sedimentation tank 44, a second drain pipe 13 connected to the second sedimentation tank 45, and a third drain pipe 14 connected to the third sedimentation tank 46. The discharge ends of the first drain pipe 12, the second drain pipe 13, and the third drain pipe 14 all extend along the bottom of the filter box 1 to the outside of the filter box 1 to discharge the sedimented impurities. The three drain pipes can be opened periodically to allow the sediment to be discharged in time, reduce accumulation, and extend the cleaning frequency. The bottom of the filter box 1 is provided with two pipe covers 16 for covering each drain pipe.

[0032] Reference Figure 1 , Figure 2 and Figure 3 To prevent coarse particles such as leaves, impurities, and fish feces in the sewage from clogging the filter device, reducing filtration efficiency, and prolonging cleaning time, a filter disc 62 is installed directly above the first-stage sedimentation chamber 4 in the direction of the water inlet of the filter box 1. The outlet end of the sewage inlet pipe 11 is located directly above the filter disc 62 so that the sewage to be filtered can enter the filter disc 62 through the sewage inlet pipe 11 for filtration. The first guide baffle 3 in the direction of the water inlet is fixedly connected to the left side wall of the filter box 1 through a fixing plate 6. The filter disc 62 is installed on the through hole 61 of the fixing plate 6.

[0033] Reference Figure 3 To improve the filtration effect, multiple layers of filter blankets 5 are stacked and housed in the first-stage sedimentation chamber 4 located at the water inlet. Preferably, two layers of filter blankets 5 are used. A bacterial cultivation device (such as a biological filter, biological rotating disc, or moving bed biofilm reactor) can also be installed in the second-stage sedimentation chamber 41. A sterilization device (such as an ultraviolet sterilizer, ozone generator, or chlorine dioxide generator) can also be installed in the third-stage sedimentation chamber 42. This sterilization device can be hidden in the third-stage sedimentation chamber 42 to prevent eye damage when people observe and clean the filter. After the sewage is filtered in the first-stage sedimentation chamber 4, cultured in the second-stage sedimentation chamber 41, and sterilized in the third-stage sedimentation chamber 42, the clean water flows into the fourth-stage sedimentation chamber 43, and the two systems circulate to achieve water purification. The top of the entire filter box 1 is covered with a top cover 17.

[0034] The working principle of this multi-stage overflow sedimentation filtration device is as follows:

[0035] External sewage enters through sewage inlet pipe 11, is initially filtered by filter disc 62, enters the first sedimentation chamber 4, is then filtered by filter blanket 5, and then collects in the first sedimentation tank 44 under the guidance of the slag guide slope 48 at the bottom of the first sedimentation chamber 4.

[0036] When the water level in the first sedimentation chamber 4 exceeds the first overflow baffle 2, the water in the first sedimentation chamber 4 will overflow the first overflow baffle 2 and flow to the area on the left side of the second sedimentation chamber 41, and then flow to the area on the right side of the second sedimentation chamber 41 through the second sedimentation tank 45. During this process, the sludge in the second sedimentation chamber 41 will accumulate in the second sedimentation tank 45 under the guidance of the bottom sludge guide slope 48.

[0037] When the water level in the second-stage sedimentation chamber 41 exceeds the second overflow baffle 2, the water in the second-stage sedimentation chamber 41 will overflow the second overflow baffle 2 and flow to the area on the left side of the third-stage sedimentation chamber 42, and then flow to the area on the right side of the third-stage sedimentation chamber 42 through the third sedimentation tank 46. During this process, the sludge in the third-stage sedimentation chamber 42 will accumulate in the third sedimentation tank 46 under the guidance of the bottom sludge guide slope 48.

[0038] When the water level in the third sedimentation chamber 42 exceeds the third overflow baffle 2, the water in the third sedimentation chamber 42 will overflow the third overflow baffle 2 and enter the fourth sedimentation chamber 43 to form clean water. The few impurities in the clean water will settle and gather in the fourth sedimentation tank 47. The cleanest water at the top of the fourth sedimentation chamber 43 will be discharged through the clear water pipe 15.

[0039] When a large amount of impurities accumulate in the first three sedimentation tanks, open the three drain pipes. The first drain pipe 12 discharges the impurities from the first sedimentation tank 44, the second drain pipe 13 discharges the impurities from the second sedimentation tank 45, and the third drain pipe 14 discharges the impurities from the third sedimentation tank 46.

[0040] This utility model relates to a multi-stage overflow sedimentation filtration device. It employs a multi-stage sedimentation structure, using multiple overflow baffles 2 arranged in a row at intervals within the filter housing 1. This divides the interior of the filter housing 1 from the inlet to the outlet, forming multiple sedimentation chambers. This multi-stage sedimentation design acts like a series of checkpoints for water purification. Each sedimentation chamber can initially intercept and settle pollutants in the water, significantly reducing the burden on subsequent filtration stages. Simultaneously, guide baffles 3 separate the sedimentation chambers between adjacent overflow baffles 2 along the water flow filtration direction, forming two interconnected areas. The guide baffles 3 are positioned higher than the corresponding adjacent overflow baffles 2. This unique flow-guiding structure guides the water flow in an orderly manner, creating a stable flow state between the multi-stage sedimentation chambers, further improving sedimentation efficiency. Through the synergistic effect of multi-stage sedimentation and flow guiding structure, the filtration device of this utility model can significantly improve filtration efficiency, effectively remove impurities and harmful substances in water, extend the cleaning cycle (cleaning once every 120 days), and provide a more efficient, convenient and reliable solution for water purification in various fields. Its filtration efficiency is increased by 50%, the cleaning frequency is reduced by 300%, and the ease of cleaning is increased by 100%.

[0041] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of protection of the present utility model. Therefore, any equivalent changes made in accordance with the scope of the present utility model patent application shall still fall within the scope of the present utility model.

Claims

1. A multi-stage overflow sedimentation type filter apparatus comprising a filter tank, characterized by, The filter box is equipped with multiple overflow baffles, all of which are arranged in a row at intervals and sequentially divide the interior of the filter box from the water inlet to the water outlet to form a multi-stage sedimentation chamber. All the overflow baffles are lower than the depth of the filter box. The sedimentation chambers between two adjacent overflow baffles are separated by a flow guide baffle along the water flow filtration direction to form two interconnected areas. The flow guide baffle is set higher than the two adjacent overflow baffles.

2. The multi-stage overflow settling filter apparatus of claim 1, wherein, Except for the last sedimentation chamber located at the outlet, all other sedimentation chambers are equipped with drain pipes.

3. The multi-stage overflow settling filter apparatus of claim 2, wherein, Each sedimentation chamber is equipped with a sedimentation tank at the bottom, and the sewage pipe is connected to the sedimentation tank at the bottom of the corresponding sedimentation chamber. Two areas within the same sedimentation chamber, separated by a flow guide baffle, are interconnected through corresponding sedimentation tanks.

4. The multi-stage overflow settling filter apparatus of claim 3, wherein, The inner bottom wall of the filter box is provided with a long strip-shaped groove along the water flow filtration direction, and the groove is separated by all the overflow baffles to form all the sedimentation tanks.

5. The multi-stage overflow settling filter apparatus of claim 3, wherein, The inner bottom wall of each sedimentation chamber slopes downward toward the side of the corresponding sedimentation tank to form a pair of slag guiding slopes, and the sedimentation tanks in the same sedimentation chamber are located between the corresponding pair of slag guiding slopes.

6. The multi-stage overflow settling filter apparatus of claim 5, wherein, The inner bottom wall of the filter box is V-shaped, and all the overflow baffles and all the flow guide baffles have a V-shaped design at the parts that mate with the inner bottom wall of the filter box.

7. The multi-stage overflow settling filter apparatus of claim 1, wherein, The first-stage sedimentation chamber, located at the water inlet, contains multiple layers of filter blankets.

8. The multi-stage overflow settling filter apparatus of claim 1, wherein, A filter disc is located directly above the first-stage sedimentation chamber in the direction of the water inlet. A sewage inlet pipe is provided on the side wall of the water inlet of the filter box, and the outlet end of the sewage inlet pipe is located directly above the filter disc.

9. The multi-stage overflow settling filter apparatus of claim 8, wherein, The first flow guide baffle located in the water inlet direction is fixedly connected to the side wall of the filter box through a fixing plate, and the filter disc is installed on the through hole of the fixing plate.

10. The multi-stage overflow settling filter apparatus of claim 1, wherein, A clear water pipe is provided on the side wall of the water outlet end of the filter box. The clear water pipe is connected to the last stage sedimentation chamber located in the direction of the water outlet end. A pipe cover is provided at the bottom of the filter box to cover the sewage pipe.

Images