A drainage system

Abstract

The application provides a drainage system, relates to the technical field of drainage systems, and comprises a garage roof, a leveling layer and a waterproof layer arranged on the garage roof, a drainage structure and a filtering and collecting assembly, the waterproof layer is provided with the drainage structure, the upper layer of the drainage structure is provided with a soil layer, the drainage structure is used for collecting rainwater through the infiltration of the soil layer and guiding the rainwater to a drainage link, the side of the drainage structure is provided with a flow guide anti-blocking structure capable of preventing impurities from entering the inside of the drainage structure, and the filtering and collecting assembly is used for collecting the infiltration water collected by the drainage structure and draining the infiltration water into a water body nearby, thereby solving the technical problem that in the related art, a single filtering layer is difficult to completely filter small solid impurities in the infiltration water, part of the impurities are accumulated in the drainage structure, water is accumulated on the garage roof, and the service life of the waterproof layer is affected.

Description

Technical Field

[0001] This invention belongs to the field of drainage system technology, specifically, it relates to a drainage system. Background Technology

[0002] Drainage systems are engineering facilities used to treat and remove urban sewage and rainwater. They are an important part of urban public facilities and urban master planning. Urban drainage systems usually consist of drainage pipes and sewage treatment plants. Under the system of separating sewage and rainwater, sewage is collected by drainage pipes, sent to sewage treatment, and then discharged into water bodies or recycled. Rainwater runoff is collected by drainage pipes and discharged into nearby water bodies.

[0003] The core function of current garage roof drainage systems is to collect and converge rainwater that has seeped into the soil layer. After filtering out some impurities, the rainwater is guided through the drainage structure to sedimentation, recycling, or discharge, thus achieving orderly treatment of rainwater and preventing water accumulation from damaging the waterproof layer and concrete structure of the garage roof. With the development of drainage technology, zero-slope drainage systems are becoming increasingly widely used. Zero-slope drainage systems have changed the traditional unorganized drainage mode of planted roofs. This system does not require slope laying and, by combining it with double-layer prefabricated rolls that integrate waterproofing and root barrier functions, it has high construction efficiency and truly achieves waterproofing, drainage, and root barrier functions in one.

[0004] However, in practical applications, since only a single filter layer is typically used to intercept impurities, fine impurities such as sand and mud mixed in the seepage water can easily penetrate the filter layer and enter the drainage structure during the collection process. This can cause blockage of the drainage structure, leading to localized water accumulation on the garage roof and affecting the service life of the waterproof layer. Summary of the Invention

[0005] The purpose of this invention is to provide a drainage system that solves the technical problem in related technologies where a single filter layer cannot completely filter out fine solid impurities in the infiltrated water, leading to the accumulation of some impurities in the drainage structure, which in turn causes water accumulation on the garage roof and affects the service life of the waterproof layer.

[0006] According to one aspect, at least one embodiment of the present invention provides a drainage system including a garage roof slab, the garage roof slab being provided with a leveling layer and a waterproof layer, and further comprising: The drainage structure is provided on the waterproof layer, and a soil layer is provided on the upper layer of the drainage structure. The drainage structure is used to collect the infiltration water of rainwater through the soil layer and guide it to the drainage stage. The side of the drainage structure is equipped with a flow guiding and anti-blocking structure that can prevent impurities from entering the interior of the drainage structure. A filter collection component is used to collect the seepage water collected by the drainage structure and discharge the seepage water into a nearby water body.

[0007] In order to collect the seepage water and guide it to the drainage stage, according to an exemplary embodiment of the present disclosure, the drainage structure includes a drainage pipe assembly disposed on the waterproof layer. The drainage pipe assembly consists of several drainage channels, which are connected together by several adapted four-way connectors, enabling the drainage channels to make 90° turns and achieve a crisscrossing pattern. The drainage channels divide the upper area of ​​the waterproof layer into several water collection areas. Each four-way connector and the free end of each drainage channel are provided with a drainage baffle that serves as a sealing function. A collection section is provided inside the drainage pipe assembly to collect infiltrated water and discharge it into the drainage trough at the corresponding location.

[0008] Each of the four-way connectors is equipped with a ventilation observation window on its top, and each ventilation observation window is equipped with a dust cover on its top to prevent foreign objects from entering.

[0009] In order to collect infiltrated water that has seeped into the soil layer, according to an exemplary embodiment of this disclosure, the collection unit includes: A collection plate, wherein a plurality of collection plates are installed on the waterproof layer, and the plurality of collection plates are respectively located in the water collection area at corresponding positions; The protrusions are arranged at intervals on each of the current collectors, and there is a gap between each pair of adjacent protrusions.

[0010] It also includes drainage holes. Each drainage groove has several drainage holes equidistantly arranged on both sides. The drainage holes are positioned below the top of the protrusion, and the inner diameter of the drainage holes gradually increases from the outside to the inside.

[0011] To further reduce the occurrence of silt clogging the drainage holes, the following measures are also included: A first filter layer and an edge filter layer are provided. Each of the drainage channels is covered with the first filter layer, and an edge filter layer is provided on the upper part of the waterproof layer. The edge filter layer is provided outside of several of the collecting plates. The main filter layer is provided on the top of each of the collector plates, and the bottom edge of the main filter layer is bonded to the corresponding first filter layer and the edge filter layer.

[0012] To further prevent impurities mixed in with the seepage water from entering the drainage pipe assembly, according to an exemplary embodiment of this disclosure, the flow-guiding and anti-clogging structure includes: Mounting base, each of the drainage grooves has several mounting bases on both sides, and each of the mounting bases corresponds to one of the drainage holes; A flow guide is installed on each of the mounting bases, and positioning grooves are provided on both sides inside each flow guide; The positioning frame is provided inside each positioning slot. Each mounting seat has a limiting groove at the position corresponding to the positioning frame. The limiting groove is adapted to the positioning frame. The positioning frame can connect the mounting seat at the corresponding position to the guide frame through the setting of the limiting groove and the positioning groove.

[0013] According to an exemplary embodiment of this disclosure, each of the flow guides is provided with a set of protruding rings, and each set of protruding rings is provided with a plurality of protruding rings arranged coaxially, and the plurality of coaxially arranged protruding rings are arranged in a stepped shape with their dimensions decreasing from the outside to the inside.

[0014] In order to recover the collected permeate, according to an exemplary embodiment of this disclosure, the filtration and collection assembly includes: A sedimentation well, wherein a siphon pipe is connected to the side of the sedimentation well, and the siphon pipe is connected to the end of one of the drainage channels; A recycling tank is located on the side of the sedimentation well. The recycling tank is connected to the sedimentation well through an outlet pipe. An observation well is also installed on the top of the recycling tank.

[0015] Furthermore, both the sedimentation well and the observation well are provided with caps at their tops, and gaps are provided between the caps and the tops of the sedimentation well and the observation well at their corresponding positions.

[0016] 1. Compared with the prior art, the drainage system provided in this embodiment of the invention effectively intercepts fine impurities in the infiltrated water by setting a flow-guiding and anti-clogging structure consisting of a mounting base, a flow guide frame, and a positioning frame on the side of the drainage structure, combined with the stepped convex ring on the flow guide frame, and the multi-layer filtration design of the main filter layer, the first filter layer, and the edge filter layer, significantly reducing the probability of blockage of the drainage structure, avoiding water accumulation on the garage roof, and ensuring the service life of the waterproof layer.

[0017] 2. Compared with the prior art, the drainage system provided in this embodiment of the invention consists of a series of drainage channels and four-way connectors forming a crisscrossing drainage pipe group. Combined with a breathable observation window, dust cover and drainage baffle, it can achieve efficient horizontal flow in zero-slope scenarios, improve the system's sealing performance, and facilitate daily observation and maintenance by staff. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a cross-sectional structural diagram of a drainage system provided in an embodiment of the present invention; Figure 2 This is a three-dimensional cross-sectional view of the structure provided in an embodiment of the present invention. Figure 3 This is a cross-sectional plan view of the garage roof slab, leveling layer, waterproof layer and drainage structure in this invention. Figure 4 For the present invention Figure 3 A magnified schematic diagram of the partial structure at point A in the middle; Figure 5 This is a three-dimensional structural diagram of the drainage structure in this invention; Figure 6 This is a three-dimensional structural diagram of the drainage structure after the main filter layer is removed in this invention; Figure 7 This is a schematic diagram of the structure of the current collector plate and the protrusion in this invention; Figure 8 This is a schematic diagram of the drainage pipe assembly in this invention; Figure 9 This is a cross-sectional view of the flow-guiding and anti-blocking structure in this invention; Figure 10 This is a cross-sectional view of the flow guide, positioning groove, and convex ring in this invention.

[0020] In the diagram: 1. Garage roof slab; 2. Leveling layer; 3. Waterproof layer; 4. Soil layer; 5. Drainage trough; 6. Four-way connector; 7. Drainage baffle; 8. Ventilation observation window; 9. Dust cover; 10. Collector plate; 11. Protrusion; 12. Drainage hole; 13. First filter layer; 14. Edge filter layer; 15. Main filter layer; 16. Mounting base; 17. Flow guide; 18. Positioning groove; 19. Positioning frame; 20. Limiting groove; 21. Convex ring; 22. Sedimentation well; 23. Siphon pipe; 24. Recycling tank; 25. Water outlet pipe; 26. Observation well; 27. Cover. Detailed Implementation

[0021] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure. For ease of understanding, the English abbreviations and related technical terms involved in the embodiments of this disclosure will be explained and described below.

[0022] It should be understood that the described embodiments are merely some, not all, of the embodiments disclosed herein. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.

[0023] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The singular forms “a,” “the,” and “the” as used in the embodiments of this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0024] It should be understood that the term "and / or" used in this article is merely a way of describing the logical relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0025] Depending on the context, the word "if" as used here can be interpreted as "when" or "when" or "in response to determination" or "in response to detection." Similarly, depending on the context, the phrase "if determination" or "if detection (of the stated condition or event)" can be interpreted as "when determination" or "in response to determination" or "when detection (of the stated condition or event)" or "in response to detection (of the stated condition or event)."

[0026] It should be understood that the terms "first," "second," etc., used in this disclosure are for distinguishing purposes only and should not be construed as indicating or implying relative importance or order.

[0027] In the description of this disclosure, the terms “center,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, 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, and should not be construed as a limitation of this disclosure.

[0028] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation", "connection" and "joining" should be interpreted broadly, for example, they can be fixed connections, detachable connections, mating connections or integral connections; those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0029] like Figures 1 to 10 The diagram illustrates a drainage system according to an embodiment of the present invention, comprising a garage roof slab 1 made of concrete, a leveling layer 2 and a waterproof layer 3 on the roof slab 1, a drainage structure and a filter collection assembly, a drainage structure on the waterproof layer 3, a soil layer 4 on top of the drainage structure, the drainage structure for collecting rainwater seeping through the soil layer 4 and guiding it to the drainage stage, a flow-guiding and anti-clogging structure installed on the side of the drainage structure to prevent impurities from entering the drainage structure, and the drainage structure including a drainage pipe assembly and a collection section, the drainage pipe assembly being disposed on the waterproof layer 3. The drainage pipe assembly consists of several drainage channels 5, which are connected together by several matching four-way connectors 6, allowing the drainage channels 5 to make 90° turns and achieve a crisscrossing pattern. The drainage channels 5 divide the upper area of ​​the waterproof layer 3 into several water collection areas. Each four-way connector 6 and the free end of each drainage channel 5 are equipped with a drainage baffle 7 for sealing. The collection part is located inside the drainage pipe assembly to collect seepage water and discharge it into the corresponding drainage channel 5. Each four-way connector 6 is equipped with a ventilation observation window 8 on its top, and each ventilation observation window 8 is equipped with a dust cover 9 to block foreign objects.

[0030] Before construction, it is necessary to check whether the garage roof slab 1 needs to be repaired for dents and cracks. If so, repairs should be made to ensure the overall flatness of the garage roof slab 1, which will provide a foundation for the construction of the leveling layer 2. Then, the leveling layer 2 and the waterproof layer 3 are constructed. After the construction is completed and the acceptance is qualified, the next step of construction can be carried out.

[0031] Assemble the corresponding drainage channels 5, four-way connectors 6, and drainage baffles 7 into a drainage pipe assembly as required. During the connection of the four-way connectors 6 to the corresponding drainage channels 5, to prevent leakage, sealing gaskets should be installed at the joints to achieve a seal. The drainage channels 5 should be arranged in a crisscross pattern to define designated water collection areas. Then, install the corresponding collection units in the water collection areas. After completing the filter layer installation, evenly spread soil on the filter layer to form soil layer 4 (e.g., ...). Figure 3 As shown in the figure, its thickness is generally set to 100 mm to 150 mm. After the soil is laid, the soil surface needs to be leveled, and plants can be planted as needed.

[0032] During this process, the filter collection component is installed. When it rains, rainwater passes through the soil layer 4 and the filter layer and enters the collection section. The collection section sends the infiltrated water into the drainage trough 5. Through the four-way connector 6, the water is collected and finally discharged into the filter collection component.

[0033] The above-mentioned collection section includes a collection plate 10 and protrusions 11. Several collection plates 10 are installed on the waterproof layer 3. The several collection plates 10 are located in the water collection area at corresponding positions. Several protrusions 11 are arranged at intervals on each collection plate 10. There is a gap between each pair of adjacent protrusions 11. It also includes drainage holes 12. Several drainage holes 12 are equally spaced on both sides of each drainage channel 5. The position of the drainage holes 12 is lower than the top of the protrusions 11. The inner diameter of the drainage holes 12 gradually increases from the outside to the inside. It also includes a first filter layer 13, an edge filter layer 14 and a main filter layer 15. The first filter layer 13 is covered on each drainage channel 5. An edge filter layer 14 is provided on the upper part of the waterproof layer 3. The edge filter layer 14 is provided on the outside of several collection plates 10. A main filter layer 15 is provided on the top of each collection plate 10. The bottom edge of the main filter layer 15 is bonded to the corresponding first filter layer 13 and edge filter layer 14.

[0034] It should be noted that the manifold 10 is made of high-density polyethylene material, produced by extrusion or blow molding to form a high-density polyethylene geomembrane. Then, through a special process, closed protrusions 11 (generally semi-conical, columnar, or hemispherical shells) are pressed onto the geomembrane to form a continuous membrane and shell with three-dimensional space and a certain spatial support rigidity, ensuring that liquid can flow and drain within it.

[0035] The first filter layer 13, the edge filter layer 14, and the main filter layer 15 are all made of 200g polyester geotextile. The main filter layer 15 is made of 500mm wide geotextile spliced ​​together and is mainly used above the collector plate 10 to achieve the sealing and covering of the collector plate 10 and the upper protrusion 11. The first filter layer 13 and the edge filter layer 14 are both made of 200mm wide geotextile spliced ​​together and are mainly used at the splicing positions of several main filter layers 15.

[0036] During the process of laying the first filter layer 13, the edge filter layer 14, and the main filter layer 15, the edge filter layer 14 is laid first, such as... Figure 4As shown, the lower half of the edge filter layer 14 is located at the bottom of the collector plate 10. Then, the collector plate 10 and the drainage pipe assembly are laid. The upper half of the edge filter layer 14 is then placed over the protrusion 11 at the edge of the collector plate 10. The first filter layer 13 is then laid on the drainage trough 5. The width of the first filter layer 13 is greater than the width of the drainage trough 5. At this time, the edge of the first filter layer 13 covers the protrusion 11 at the edge of the collector plate 10. Then, the main filter layer 15 is laid. The overlapping parts of the main filter layer 15 with the first filter layer 13 and the edge filter layer 14 are bonded with geotextile adhesive and the geotextile is turned up and fixed.

[0037] The aforementioned flow-guiding and anti-blocking structure includes a mounting base 16, a flow guide frame 17, and a positioning frame 19. Several mounting bases 16 are installed on both sides of each drainage channel 5, and each mounting base 16 corresponds to a number of drainage holes 12. A flow guide frame 17 is installed on each mounting base 16. Positioning grooves 18 are opened on both sides inside each flow guide frame 17. A positioning frame 19 is set inside each positioning groove 18. A limiting groove 20 is opened at the position corresponding to each mounting base 16 and the positioning frame 19. The limiting groove 20 is adapted to the positioning frame 19. The positioning frame 19 can connect the mounting base 16 and the flow guide frame 17 at the corresponding position through the setting of the limiting groove 20 and the positioning groove 18. Each flow guide frame 17 is provided with a set of protruding rings 21. Several protruding rings 21 are provided in each set and are arranged coaxially. The dimensions of the several coaxially arranged protruding rings 21 decrease from the outside to the inside to form a stepped shape.

[0038] Specifically, when installing the air deflector 17, such as Figure 9 , Figure 10 As shown, the flow guide 17 is first inserted into the mounting base 16. After the positioning groove 18 and the limiting groove 20 are aligned, the mounting base 16 and the flow guide 17 are fixed together by the positioning frame 19.

[0039] During operation, the permeated water flows through the guide frame 17 into the drain hole 12 and then into the drain trough 5. With the setting of the convex ring 21, when the permeated water passes through the convex ring 21, some impurities will be blocked by the convex ring 21, thereby reducing the possibility of impurities entering the drain trough 5, which helps to reduce the possibility of the drain trough 5 and the siphon pipe 23 being blocked and extends the service life of the system.

[0040] The filter collection assembly is used to collect the seepage water collected by the drainage structure and discharge the seepage water into the nearest water body. The filter collection assembly includes a sedimentation well 22 and a recovery tank 24. A siphon pipe 23 is connected to the side of the sedimentation well 22. The siphon pipe 23 is connected to the end of one of the drainage channels 5. The recovery tank 24 is located on the side of the sedimentation well 22 and is connected to the sedimentation well 22 through an outlet pipe 25. An observation well 26 is also installed on the top of the recovery tank 24. Both the top of the sedimentation well 22 and the observation well 26 are provided with a cover 27. A gap is provided between the cover 27 and the top of the corresponding sedimentation well 22 and the observation well 26.

[0041] Among them, sedimentation well 22 and observation well 26 are used for subsequent inspection, maintenance and dredging.

[0042] During the installation of the sedimentation well 22, the foundation pit of the sedimentation well 22 is first excavated according to the design, and then the sedimentation well 22 body is installed to ensure that the sedimentation well 22 is vertical, firm and the bottom of the well is flat. Then, the recycling tank 24 is installed in the same way. Then, the siphon pipe 23 and the outlet pipe 25 are installed in the designated position. When the seepage water enters the drainage trough 5, it can enter the sedimentation well 22 through the siphon pipe 23. After sedimentation, the water in the sedimentation well 22 can enter the recycling tank 24 through the outlet pipe 25.

[0043] The working principle or usage process of this application is as follows: When rainwater falls on soil layer 4, it slowly seeps downwards. The seeping water passes through the main filter layer 15, the first filter layer 13, and the edge filter layer 14 in sequence before entering the collector plate 10. During this process, most of the mud, sand, and other impurities are intercepted. Under the action of the protrusion 11, there is a gap between the filter layer and the collector plate 10, allowing the seeping water to flow in the gap. As it passes through the guide frame 17 and enters the drain hole 12, the remaining fine impurities are further intercepted by the protruding ring 21 on the guide frame 17, preventing these impurities from clogging the drain hole 12.

[0044] Since several drainage channels 5 are connected in both directions through four-way connectors 6 to form a complete drainage pipe group, the seepage water entering the drainage channel 5 is collected by the four-way connectors 6 under the action of horizontal flow and then transported to the designated drainage channel 5 through the siphon pipe 23 to the sedimentation well 22.

[0045] After the permeated water enters the sedimentation well 22, the remaining trace impurities are precipitated in the well to achieve deep purification of the permeated water, avoiding clogging of subsequent pipelines by impurities or affecting the quality of the recycled water. A gap is reserved in the cover 27 at the top of the sedimentation well 22 to ensure ventilation inside the well, facilitating subsequent inspection and maintenance. The purified permeated water after sedimentation flows into the recovery pool 24 through the outlet pipe 25 for storage, realizing the recycling of the permeated water. The observation well 26 at the top of the recovery pool 24 can be used to view the water level and water quality in the pool in real time. When the water volume in the recovery pool 24 reaches the upper limit, the excess permeated water is discharged就近 into the water body through the drainage device配套 to the recovery pool 24, and the entire recovery process can be completed.

[0046] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A drainage system comprising a garage roof slab (1), wherein a leveling layer (2) and a waterproof layer (3) are provided on the garage roof slab (1), characterized in that, Also includes: The drainage structure is provided on the waterproof layer (3), and a soil layer (4) is provided on the upper layer of the drainage structure. The drainage structure is used to collect the infiltration water of rainwater through the soil layer (4) and guide it to the drainage link. The side of the drainage structure is equipped with a flow guiding and anti-blocking structure that can prevent impurities from entering the interior of the drainage structure. This is used to prevent impurities mixed in the infiltration water that has been leaking through layers from entering the drainage structure. A filter collection component is used to collect the seepage water collected by the drainage structure and discharge the seepage water into a nearby water body.

2. A drainage system according to claim 1, characterized in that, The drainage structure includes a drainage pipe assembly, which is installed on the waterproof layer (3). The drainage pipe assembly consists of several drainage channels (5). The several drainage channels (5) are connected together by several matching four-way connectors (6), so that the drainage channels (5) can complete a 90° turn connection, and the several drainage channels (5) are arranged in a crisscross pattern. The several drainage channels (5) divide the upper area of ​​the waterproof layer (3) into several water collection areas. Each four-way connector (6) and each drainage channel (5) is provided with a drainage baffle (7) that plays a sealing role at its free end. The collection section is located inside the drainage pipe assembly and is used to collect the seepage water and discharge it into the drainage trough (5) at the corresponding location.

3. A drainage system according to claim 2, characterized in that, Each of the four-way connectors (6) is equipped with a ventilation observation window (8) on top, and each of the ventilation observation windows (8) is equipped with a dust cover (9) for blocking foreign objects.

4. A drainage system according to claim 3, characterized in that, The current collection unit includes: A collection plate (10) is installed on the waterproof layer (3), and the collection plates (10) are respectively located in the water collection area at the corresponding position; The protrusions (11) are arranged at intervals on each of the collector plates (10), and there is a gap between each two adjacent protrusions (11).

5. A drainage system according to claim 4, characterized in that, It also includes drainage holes (12), and several drainage holes (12) are equally spaced on both sides of each drainage groove (5). The position of the drainage holes (12) is lower than the top of the protrusion (11), and the inner diameter of the drainage holes (12) gradually increases from the outside to the inside.

6. A drainage system according to claim 5, characterized in that, Also includes: The first filter layer (13) and the edge filter layer (14) are provided on each of the drainage channels (5). The first filter layer (13) is provided on the upper part of the waterproof layer (3). The edge filter layer (14) is provided on the outside of several of the collecting plates (10). The main filter layer (15) is provided on the top of each of the collector plates (10), and the bottom edge of the main filter layer (15) is bonded to the corresponding first filter layer (13) and the edge filter layer (14).

7. A drainage system according to claim 5, characterized in that, The flow-guiding and anti-blocking structure includes: Mounting base (16), each of the drainage grooves (5) has several mounting bases (16) installed on both sides, and the several mounting bases (16) correspond one-to-one with the several drainage holes (12); A flow guide (17) is installed on each of the mounting bases (16), and a positioning groove (18) is provided on both sides inside each of the flow guides (17). The positioning frame (19) is provided inside each of the positioning slots (18). Each mounting seat (16) has a limiting slot (20) at the position corresponding to the positioning frame (19). The limiting slot (20) is adapted to the positioning frame (19). The positioning frame (19) can connect the mounting seat (16) at the corresponding position to the guide frame (17) through the setting of the limiting slot (20) and the positioning slot (18).

8. A drainage system according to claim 7, characterized in that, Each of the flow guides (17) is provided with a set of protruding rings (21). Each set of protruding rings (21) has several protruding rings arranged coaxially. The size of the several coaxially arranged protruding rings (21) decreases from the outside to the inside to form a stepped shape.

9. A drainage system according to claim 2, characterized in that, The filtering and collection component includes: A sedimentation well (22) is connected to a siphon pipe (23) on its side, and the siphon pipe (23) is connected to the end of one of the drainage channels (5); The recycling pool (24) is located on the side of the sedimentation well (22). The recycling pool (24) is connected to the sedimentation well (22) through the water outlet pipe (25). An observation well (26) is also installed on the top of the recycling pool (24).

10. A drainage system according to claim 9, characterized in that, The top of both the sedimentation well (22) and the observation well (26) is provided with a cover (27), and a gap is provided between the cover (27) and the top of the sedimentation well (22) and the observation well (26) at the corresponding positions.

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