Inverted filter layer structure of water taking infiltration channel

Abstract

The inverted filter structure comprises a gravel foundation at the bottom of an undisturbed stratum, a seepage channel filter pipe is arranged at the top of the gravel foundation, a plurality of filter holes are formed in the seepage channel filter pipe and distributed in a plum blossom shape at the top of the outer side of the seepage channel filter pipe, and an outer inverted filter layer is arranged on the outer side of the top of the seepage channel filter pipe. The outer inverted filter layer comprises a first gravel layer arranged on the outer side of the infiltration channel filter pipe; the second gravel layer is arranged on the outer side of the first gravel layer; the third gravel layer is arranged on the outer side of the second gravel layer, the cross section of the first gravel layer, the cross section of the second gravel layer and the cross section of the third gravel layer are all trapezoidal, the cost is effectively reduced through the different gravel layers arranged in the trapezoidal mode, water is conveyed to a backwashing pipeline through a backwashing pump and output from a plurality of filtering holes, and the filtering effect is good. The filter holes and the trapezoidal gravel layer on the outer side are cleaned, the filtering capacity of the inverted filter layer is improved, the distance between the trapezoidal gravel layer and the infiltration channel filter pipe is small, and the inverted filter layer can be better cleaned.

Description

Technical Field

[0001] This application relates to the field of water intake infiltration channels, and more particularly to a reverse filter layer structure for water intake infiltration channels. Background Technology

[0002] In the field of water conservancy engineering and water treatment technology, water intake infiltration channels are a common water conservancy facility used to draw water from groundwater into water collection channels. The efficiency and stability of infiltration channels directly affect the utilization effect of water resources and the sustainability of the project. However, in the long-term use of infiltration channels, they often face the problem of clogging caused by the entry of silt, particulate matter and biological pollutants into the filter pipes of the infiltration channel. This not only reduces the water intake efficiency, but also shortens the service life of the infiltration channel. Therefore, a reverse filter layer is needed to perform preliminary filtration of the water source.

[0003] However, in the process of implementing the relevant technical solutions, at least the following technical problems were found: the traditional filter layer adopts a multi-layer horizontal laying form, with each layer of material laid from top to bottom according to thickness and particle size, forming a relatively regular layered structure. The distribution of materials such as stones and gravel gives the filter layer structure a certain thickness and uniform water permeability, but its overall structure is relatively thick and heavy, with a large amount of material used and high cost. Utility Model Content

[0004] This application provides a reverse filter layer structure for a water intake infiltration channel, which solves the problem of high cost of horizontal layer arrangement in the prior art and achieves the effect of reducing costs by arranging the reverse filter layer in a trapezoidal shape.

[0005] This application provides a water intake infiltration channel reverse filter layer structure, including a crushed stone foundation at the bottom of the original stratum, an infiltration channel filter pipe on the top of the crushed stone foundation, a plurality of filter holes on the infiltration channel filter pipe, the plurality of filter holes being distributed in a quincunx pattern on the top of the outer side of the infiltration channel filter pipe, and an outer reverse filter layer disposed on the outer side of the top of the infiltration channel filter pipe, the outer reverse filter layer comprising: a first gravel layer disposed on the outer side of the infiltration channel filter pipe; a second gravel layer disposed on the outer side of the first gravel layer; and a third gravel layer disposed on the outer side of the second gravel layer, wherein the cross-sectional shape of the first gravel layer, the second gravel layer and the third gravel layer are all trapezoidal.

[0006] Furthermore, the particle size of the first gravel layer is 3–4 mm.

[0007] Furthermore, the grain size of the second gravel layer is 10–15 mm.

[0008] Furthermore, the particle size of the third gravel layer is 30–50 mm.

[0009] Furthermore, the outer side of the infiltration channel filter pipe is wrapped with a wire mesh, the mesh having a pore size of 6-8 mm.

[0010] Furthermore, a backfill layer is provided on the outside of the third gravel layer, the top of the backfill layer is flush with the original riverbed surface, and a Reno mattress for erosion prevention is provided on the top inside the backfill layer.

[0011] Furthermore, a water storage well is provided at one end of the infiltration channel filter pipe, a conveying pipe is provided on one side of the water storage well, and a backwashing assembly for flushing the infiltration channel filter pipe is provided on one side of the top of the infiltration channel filter pipe.

[0012] Furthermore, the backwashing assembly includes: a backwashing pipe disposed on the side of the water storage well near the infiltration channel filter pipe, and one end of the backwashing pipe being connected to the infiltration channel filter pipe; a flushing pump disposed on the backwashing pipe; and a valve disposed on the outside of one end of the infiltration channel filter pipe.

[0013] The technical solution provided in this application has at least the following technical effects or advantages:

[0014] By using trapezoidal layers of gravel to wrap the outside of the conveying pipe, less material is used compared to multi-layer flat laying, effectively reducing costs. Water is pumped into the backwash pipe by a backwash pump and output from multiple filter holes to clean the filter holes and the outer trapezoidal gravel layer, improving the filtration capacity of the backwash layer. The small gap between the trapezoidal gravel layer and the infiltration channel filter pipe allows for better cleaning of the backwash layer. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the filter layer in the embodiments of this application;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the infiltration channel for water intake in an embodiment of this application;

[0017] Figure 3 This is a schematic diagram of the backwashing assembly in an embodiment of this application;

[0018] In the diagram: 10. Original strata; 20. Crushed stone foundation; 30. Infiltration channel filter pipe; 31. Filter hole; 40. Outer backwash layer; 50. Water storage well; 60. Conveying pipeline; 70. Backwash assembly; 41. First gravel layer; 42. Second gravel layer; 43. Third gravel layer; 44. Reno mattress; 45. Backfill layer; 71. Backwash pipeline; 72. Flushing pump; 73. Valve. Detailed Implementation

[0019] This application discloses a reverse filter layer structure for a water intake infiltration channel. The trapezoidal arrangement of the first gravel layer 41, the second gravel layer 42, and the third gravel layer 43 allows for a more compact arrangement on the outside of the infiltration channel filter pipe 30, filtering particulate impurities and reducing material costs. Water is pumped to the backwash pipe 71 by the flushing pump 72 to clean the multiple filter holes 31 and the outer first gravel layer 41, the second gravel layer 42, and the third gravel layer 43. The more compact arrangement of the first gravel layer 41, the second gravel layer 42, and the third gravel layer 43 also facilitates the seepage of backwash water, resulting in a better cleaning effect.

[0020] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0021] Please refer to Figure 1 and Figure 2 This embodiment provides a water intake infiltration channel reverse filter layer structure, including a gravel foundation 20 at the bottom of the original stratum 10, an infiltration channel filter pipe 30 on top of the gravel foundation 20, the gravel foundation 20 being positioned at the bottom of the infiltration channel filter pipe 30 to provide stable support for the infiltration channel filter pipe 30, a plurality of filter holes 31 being formed on the infiltration channel filter pipe 30, the plurality of filter holes 31 being distributed in a quincunx pattern on the top of the outer side of the infiltration channel filter pipe 30, and an outer reverse filter layer 40 being provided on the outer side of the top of the infiltration channel filter pipe 30, the outer reverse filter layer 40 including a first The infiltration channel consists of a gravel layer 41, a second gravel layer 42, a third gravel layer 43, a Reno mattress 44, and a backfill layer 45. The first gravel layer 41 is located outside the infiltration filter pipe 30, and the particle size of the first gravel layer 41 is 3-5 mm. The second gravel layer 42 is located outside the first gravel layer 41, and the particle size of the second gravel layer 42 is 10-15 mm. The third gravel layer 43 is located outside the second gravel layer 42, and the cross-sections of the first gravel layer 41, the second gravel layer 42, and the third gravel layer 43 are... All layers are trapezoidal in shape. The third gravel layer 43 has a particle size of 30-50 mm. The outer side of the infiltration channel filter pipe 30 is wrapped with wire mesh with a mesh size of 6-8 mm. The wire mesh ensures smooth water flow into the infiltration channel while blocking larger particles. A backfill layer 45 is set outside the third gravel layer 43. The top of the backfill layer 45 is flush with the original riverbed surface. The backfill layer 45 uses washed original river sand to ensure complete integration with the original surface and maintain the naturalness of the terrain. Reynolds The mattress 44 is placed on top inside the backfill layer 45. The Reno mattress 44 is used to prevent the slope from being eroded and washed away by water flow. Through the first gravel layer 41, the second gravel layer 42, and the third gravel layer 43 with progressively increasing particle size on the outer side of the infiltration channel filter pipe 30, impurities and silt of different particle sizes are filtered layer by layer. The trapezoidal first gravel layer 41, the second gravel layer 42, and the third gravel layer 43 are set more tightly on the outer side of the infiltration channel filter pipe 30, which saves materials and reduces costs compared to the flat method.

[0022] Please refer to Figures 1-3 A water storage well 50 is provided at one end of the infiltration pipe 30, and a conveying pipe 60 is provided on one side of the water storage well 50. A backwashing assembly 70 for flushing the infiltration pipe 30 is provided on one side of the top of the infiltration pipe 30. The backwashing assembly 70 includes a backwashing pipe 71, a flushing pump 72, and a valve 73. The backwashing pipe 71 is located on the side of the water storage well 50 near the infiltration pipe 30, and one end of the backwashing pipe 71 is connected to the infiltration pipe 30. The other end of the backwashing pipe 71 extends into the bottom of the water storage well 50. The flushing pump 72 is located on the backwashing pipe 71, and the valve 73 is located on the outside of one end of the infiltration pipe 30. The flushing pump 72 is used to flush the water inside the water storage well 50. The purified water is reintroduced into the infiltration channel filter pipe 30 and then seeps out from the multiple filter holes 31 on the outside of the infiltration channel filter pipe 30. When the valve 73 is used to block the water flow in the infiltration channel filter pipe 30 during cleaning, it is introduced into the water storage well 50 to clean the multiple filter holes 31, the first gravel layer 41, the second gravel layer 42, and the third gravel layer 43, thereby cleaning away the dirt mixed on the filter holes 31, the first gravel layer 41, the second gravel layer 42, and the third gravel layer 43 and improving the filtration effect. The trapezoidal arrangement of the first gravel layer 41, the second gravel layer 42, and the third gravel layer 43 on the outside of the infiltration channel filter pipe 30 makes the distance for the water in the infiltration channel filter pipe 30 to seep out is reduced, thereby improving the backwashing effect.

[0023] The functional principle of this application can be explained through the following methods:

[0024] In use, a layer of wire mesh is wrapped around the outside of the infiltration channel filter pipe 30. Then, the first gravel layer 41, the second gravel layer 42, and the third gravel layer 43 are laid in a trapezoidal shape on the outside of the infiltration channel filter pipe 30. Compared with a flat laying method, this effectively saves materials and reduces engineering costs. When groundwater seeps into the infiltration channel filter pipe 30, it is filtered through the third gravel layer 43, the second gravel layer 42, and the first gravel layer 41, whose particle sizes decrease sequentially. Then, it seeps into the infiltration channel filter pipe 30 through the filter holes 31 and is concentrated and fed into the water storage well 50. It is then discharged from the conveying pipe 60 on the other side. After long-term use, the flushing is started. The flushing pump 72 is turned off, and the valve 73 is closed, so that the flushing pump 72 inputs water from the water storage well 50 into the infiltration channel filter pipe 30 through the backwash pipe 71. The valve 73 prevents the water from flowing back into the water storage well 50, so that the water can seep outward from the multiple filter holes 31, thereby cleaning the impurities mixed in the first gravel layer 41, the second gravel layer 42 and the third gravel layer 43, thereby improving the filtration effect of the back filter layer. The first gravel layer 41, the second gravel layer 42 and the third gravel layer 43 are trapezoidal and are more compact on the outside of the infiltration channel filter pipe 30, which also reduces the distance the water seeps out and makes the cleaning effect better.

[0025] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

[0026] The above description is merely a preferred embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present application, based on the technical solution and concept of the present application, should be covered within the scope of protection of the present application.

Claims

1. A water intake infiltration gallery filter structure comprising a gravel foundation (20) at the bottom of an in-situ formation (10), characterized in that, The top of the gravel foundation (20) is provided with a seepage channel filter pipe (30), a plurality of filter holes (31) are formed in the seepage channel filter pipe (30), the plurality of filter holes (31) are distributed in a plum blossom shape at the top of the outer side of the seepage channel filter pipe (30), the outer side of the top of the seepage channel filter pipe (30) is provided with an outer side filter layer (40), the outer side filter layer (40) comprises: A first gravel layer (41) is arranged on the outer side of the seepage channel filter pipe (30); A second gravel layer (42) is arranged on the outer side of the first gravel layer (41); A third gravel layer (43) is arranged on the outer side of the second gravel layer (42), and the first gravel layer (41), the second gravel layer (42) and the third gravel layer (43) are all trapezoidal in cross-sectional shape.

2. A filter structure for a water intake infiltration gallery according to claim 1, characterized in that, The particle size of the first gravel layer (41) is 3-5 mm.

3. The water intake infiltration gallery and anti-filtration layer structure according to claim 1, characterized in that, The particle size of the second gravel layer (42) is 10-15 mm.

4. The water intake infiltration gallery underdrain structure of claim 1, wherein, The particle size of the third gravel layer (43) is 30-50 mm.

5. The water intake infiltration gallery underdrain structure of claim 1, wherein, The outer side of the seepage channel filter pipe (30) is wrapped with a steel wire mesh, and the aperture of the steel wire mesh is 6-8 mm.

6. A filter structure for a water intake infiltration gallery according to claim 1, characterized in that, The outer side of the third gravel layer (43) is provided with a backfill layer (45), the top of the backfill layer (45) is flush with the original river beach surface, and the top of the inside of the backfill layer (45) is provided with a Reynolds protective pad (44) for preventing scouring.

7. A filter structure for a water intake infiltration gallery according to claim 1, characterized in that, One end of the seepage channel filter pipe (30) is provided with a water storage well (50), one side of the water storage well (50) is provided with a conveying pipeline (60), and one side of the top of the seepage channel filter pipe (30) is provided with a backwashing assembly (70) for flushing the seepage channel filter pipe (30).

8. A filter structure for a water intake infiltration gallery according to claim 7, characterized in that, The backwashing assembly (70) comprises: A backwashing pipeline (71) is arranged on the side of the water storage well (50) close to the seepage channel filter pipe (30), and one end of the backwashing pipeline (71) is in communication with the seepage channel filter pipe (30); A flushing pump (72) is arranged on the backwashing pipeline (71); A valve (73) is arranged on the outer side of one end of the seepage channel filter pipe (30).

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