Concrete prefabricated drainage component

Abstract

The invention discloses a concrete prefabricated drainage component, and relates to the technical field of drainage components, the concrete prefabricated drainage component comprises a water collecting grate, the water collecting grate comprises a seat body, a filter plate and a plurality of filter assemblies; the seat body is fixedly arranged on the edge of a road, and the top of the seat body is lower than the road surface of the road; a water inlet is formed in the base body, and the filter plate is movably connected with the base body and used for covering the water inlet; a plurality of water inlet holes are formed in the filter plate; the plurality of filtering assemblies are in one-to-one correspondence with the plurality of water inlet holes; the filtering assembly comprises a cover plate and a floating part; the cover plate is rotationally connected with the filter plate and is used for controlling the opening and closing of the water inlet hole; the floating piece is arranged on one side of the cover plate and is influenced by the buoyancy effect of accumulated water. The probability of garbage blockage can be effectively reduced, and therefore the durability and impermeability of the concrete prefabricated drainage component can be effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of drainage components, and in particular to a prefabricated concrete drainage component. Background Art

[0002] Precast concrete drainage components are now widely used in construction and municipal engineering, primarily for the collection and discharge of rainwater and sewage. Common precast drainage components include concrete drainpipes, manholes, and stormwater inlets. These components are typically made of ordinary or reinforced concrete, prefabricated in molds and assembled on-site. To improve impermeability, some products incorporate waterproofing agents or surface coatings. Another solution is to use polymer concrete or fiber-reinforced concrete to enhance component strength and durability.

[0003] Existing gullies typically consist of a lower base, an upper base, a middle section, an upper edge, and a water collection grate. Once installed, the gully is primarily located at the edge of the road. The water collection grate allows surface water to flow in while also intercepting road debris. When the upper base is attached to the lower base, a circular hole is formed between them that fits the drainpipe, allowing surface water flowing into the gully to drain through the pipe.

[0004] However, existing rainwater inlets are often blocked by garbage, which affects the discharge of accumulated water. This not only easily leads to serious waterlogging on the road, but also easily causes the concrete precast components of the rainwater inlets to be immersed in accumulated water for a long time, thereby affecting the durability and impermeability of the concrete precast components. Summary of the Invention

[0005] The present application provides a prefabricated concrete drainage component, which can effectively reduce the probability of garbage blockage, thereby effectively improving the durability and impermeability of the prefabricated concrete drainage component.

[0006] This application provides a prefabricated concrete drainage component, which adopts the following technical solution: A concrete prefabricated drainage component includes a water collecting grate, wherein the water collecting grate includes a seat body, a filter plate and a plurality of filter components; The base is fixedly arranged at the edge of the road, and the top of the base is lower than the road surface; The seat body has a water inlet for the accumulated water to flow in, the filter plate is movably connected to the seat body, and the filter plate is used to cover the water inlet; the filter plate is provided with a plurality of water inlet holes for the accumulated water to flow into the water inlet, and the water inlet holes penetrate the filter plate; The filter assembly is arranged on the top of the filter plate covering the water inlet, and a plurality of filter assemblies correspond one to one to a plurality of water inlet holes; The filter assembly includes a cover plate and a floating member; The cover plate is rotatably connected to the filter plate and is used to control the opening and closing of the corresponding water inlet hole; the floating member is arranged on a side of the cover plate away from the rotational connection position between the cover plate and the filter plate, and is affected by the buoyancy of the accumulated water; When there is no water accumulation on the road surface, the cover plate keeps covering the corresponding water inlet hole; when there is a certain amount of water accumulation on the road surface, the floating member drives the cover plate to rotate so that the accumulated water flows into the corresponding water inlet hole.

[0007] By adopting the above technical solution, when there is no water on the road surface, garbage on the road surface will not be able to enter, thereby effectively reducing the probability of garbage blockage and making it convenient for cleaning staff to clean up the garbage on the road surface; when there is water on the road surface, the cover plate rotates and opens under the floating action of the floating part, allowing the water on the road surface to enter through the water inlet hole. At this time, it is more difficult for garbage to enter with the accumulated water, thereby further reducing the probability of garbage entering and forming a blockage, and then effectively improving the durability and impermeability of the concrete prefabricated drainage components.

[0008] Optionally, the filter plate has a plurality of raised portions on a side close to the filter assembly, the plurality of raised portions enclose a plurality of recessed spaces, and the plurality of water inlet holes are respectively communicated with the plurality of recessed spaces.

[0009] By adopting the above technical solution, it is possible to facilitate the accumulation of water on the road surface to gather near the water collection grate, thereby facilitating the discharge of water on the road surface, and at the same time facilitate the retention of road garbage above the filter plate, making it easier for subsequent cleaning personnel to clean it up; in addition, the raised portion can effectively reduce the probability of pedestrians or vehicles directly contacting multiple filter components when passing through the filter plate, thereby effectively reducing the probability of the filter components being damaged by external forces and extending the service life of the filter components.

[0010] Optionally, the rotation axis of the cover plate is parallel to the length direction of the road, and the side of the cover plate close to the curb is rotatably connected to the filter plate.

[0011] By adopting the above technical solution, the accumulated water gathered in the water collection grate can be easily discharged in time, and at the same time, it can further facilitate the cleaning staff to clear the garbage gathered on the filter plate away from the curb, reducing the probability of the cleaning staff accidentally turning the cover open and causing garbage to enter during the process of clearing the garbage.

[0012] Optionally, when the cover plate is rotated to an extreme position in a direction away from the filter plate, a drainage gap is formed between the cover plate and the filter plate for the accumulated water to flow into and communicate with the corresponding water inlet hole.

[0013] By adopting the above technical solution, the probability of garbage flowing into the drainage hole along with the accumulated water can be further reduced, and the degree to which the cover plate can be rotated and opened can be effectively limited.

[0014] Optionally, the filter assembly further comprises a plurality of intercepting members; The two ends of the intercepting member are respectively connected to the edge position of the cover plate away from its own rotation axis and the position of the filter plate close to the corresponding water inlet hole; when the cover plate covers the corresponding water inlet hole, the intercepting member is hidden between the cover plate and the filter plate; when the cover plate rotates to the extreme position in the direction away from the filter plate, the intercepting member forms an interception in the drainage gap.

[0015] By adopting the above technical solution, the intercepting component can effectively intercept garbage when accumulated water flows into the water inlet, thereby further effectively reducing the probability of garbage entering and causing blockage.

[0016] Optionally, the intercepting member includes two intercepting members and an elastic member; One end portion of the two intercepting members is rotatably connected, and the other end portions of the two intercepting members are rotatably connected to the corresponding cover plate and the filter plate respectively; the elastic member is disposed between the two intercepting members and has a tendency to drive the two intercepting members to rotate closer together; When the cover plate rotates toward the filter plate, the intercepting member folds to push out the intercepted objects.

[0017] By adopting the above technical solution, during the rotation and reset process of the cover plate, the intercepting component can push out the intercepted garbage so that the garbage stays above the filter plate, thereby further effectively reducing the probability of garbage entering and causing blockage.

[0018] Optionally, the filter assembly further includes a filter screen; the filter screen is disposed on the filter plate and covers the corresponding water inlet hole.

[0019] By adopting the above technical solution, the filter can intercept garbage that flows into the water inlet with the accumulated water, thereby further reducing the probability of garbage entering and causing blockage.

[0020] Optionally, the filter screen is elastic; one end of the filter screen is connected to the corresponding cover plate and the other end is in contact with and abuts against the hole wall of the corresponding water inlet hole.

[0021] By adopting the above technical solution, when the cover is rotated and opened due to accumulated water, the corresponding filter can be driven to move in the water inlet, thereby facilitating the displacement of garbage intercepted by the filter, thereby reducing the probability of the garbage intercepted by the filter staying for a long time and causing the filter to be blocked, that is, reducing the probability of accumulated water being unable to flow into the filter due to the filter being blocked by garbage.

[0022] Optionally, the side of the filter plate close to the curb is rotatably connected to the base body, and the rotation axis of the filter plate is parallel to the rotation axis of the cover plate.

[0023] By adopting the above technical solution, it is convenient for cleaning staff to rotate the filter plate open to remove the garbage intercepted by the filter and a small part of the garbage entering the rainwater inlet. At the same time, it is convenient for cleaning staff to complete the filter cleaning work at the roadside, thereby improving the safety of cleaning staff's work.

[0024] Optionally, when the filter plate is rotated to an extreme position in a direction away from the base body, the filter plate is tilted upward in a direction close to the curb, and the end of the filter screen away from the corresponding cover plate is detachably connected to the filter plate.

[0025] By adopting the above technical solution, the efficiency of cleaning staff in clearing the filter can be improved, and at the same time, the garbage separated from the filter can be easily dropped into the rainwater outlet, making it easier for cleaning staff to remove the garbage in the rainwater outlet at the same time, thereby reducing the pollution caused by the garbage falling back onto the road after clearing the blockage.

[0026] In summary, this application has at least one of the following beneficial effects: 1. It can effectively reduce the probability of garbage entering the rainwater inlet, thereby effectively reducing the probability of garbage blockage, and further effectively improving the durability and anti-seepage performance of prefabricated concrete drainage components; 2. It can reduce the probability of the filter component being affected by external forces, thereby effectively extending the service life of the filter component and ensuring the filter component's filtering effect on garbage; 3. It can facilitate cleaning staff to clean up the garbage accumulated on the filter plate, and at the same time facilitate cleaning staff to clear the filter and rainwater outlet, and can effectively ensure the safety of cleaning staff during the clearing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of a prefabricated concrete drainage component on a road according to an embodiment of the present application; Figure 2 This is a schematic structural diagram of a prefabricated concrete drainage component in an embodiment of the present application when it is not draining surface water on the road; Figure 3 This is a structural diagram of a prefabricated concrete drainage component used in an embodiment of the present application to discharge surface water on a road surface; Figure 4 yes Figure 2 Enlarged view of point A in the middle; Figure 5 yes Figure 3 Enlarged view of point B in the middle; Figure 6 This is a schematic diagram of the partial structure of a filter plate of a prefabricated concrete drainage component in an embodiment of the present application when it is rotated open.

[0028] Explanation of the accompanying reference numerals: 1. Lower base of the well body; 2. Upper base of the well body; 3. Middle section of the well body; 4. Upper edge of the well body; 5. Water collection grate; 51. Base body; 511. Water inlet; 52. Filter plate; 521. Water inlet hole; 522. Raised portion; 523. Recessed space; 53. Filter assembly; 531. Cover plate; 532. Floating part; 533. Intercepting member; 5331. Intercepting part; 5332. Elastic part; 534. Filter screen; 6. Road; 61. Road surface; 62. Curb; 7. Drainage gap. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-6 This application is described in further detail.

[0030] Reference Figure 1 The embodiment of the present application discloses a prefabricated concrete drainage component, which is installed at the edge of a road 6 and is used to drain water accumulated on the road surface 61 in a timely manner.

[0031] Reference Figure 1 and Figure 2 The precast concrete drainage component includes a lower well base 1, an upper well base 2, a middle well section 3, an upper well edge 4, and a water collection grate 5. The lower well base 1, upper well base 2, middle well section 3, upper well edge 4, and water collection grate 5 are installed and secured sequentially from bottom to top during construction. After the precast concrete drainage component is completed, the top end surface of the water collection grate 5 is lower than the road surface 61 of the road 6, facilitating the flow of accumulated water on the road surface 61 toward the water collection grate 5. In this embodiment, since the precast concrete drainage component (i.e., the gully) described above is prior art in the art, it will not be described in detail here, and will only be briefly illustrated in the accompanying drawings.

[0032] Reference Figure 2 and Figure 3 The water collecting grate 5 includes a seat body 51 , a filter plate 52 and a plurality of filter components 53 .

[0033] Reference Figure 4 and Figure 5 The seat body 51 is a rectangular frame structure as a whole, which is fixedly connected to the upper edge 4 of the well body, with one side in the width direction close to the curb 62 and its length direction parallel to the length direction of the road 6; the middle position of the seat body 51 has a water inlet 511 for the accumulated water on the road surface 61 to enter the rainwater inlet, and the position of the road surface 61 of the road 6 close to the seat body 51 has an inclined surface for guiding the accumulated water on the road surface 61 to flow toward the direction close to the seat body 51.

[0034] Reference Figure 1 and Figure 2The filter plate 52 is a rectangular plate-shaped structure as a whole. One side of the filter plate 52 in the width direction is rotatably connected to the side of the base body 51 in the width direction close to the curb 62, and its rotation axis is parallel to its own length direction and parallel to the length direction of the base body 51.

[0035] Reference Figure 2 and Figure 6 The filter plate 52 is limited in its rotation relative to the base 51. When the filter plate 52 is rotated to its limit position toward the base 51, it contacts and abuts against the base 51 and covers the upper opening of the water inlet 511, preventing water accumulated on the road surface 61 from directly entering the rainwater outlet through the water inlet 511. When the filter plate 52 is rotated to its limit position toward the base 51, it contacts and abuts against the curb 62 and is limited by it. At this time, the filter plate 52 is tilted upward in its width direction toward the curb 62, making it easier for cleaning personnel to control the filter plate 52 to rotate and open at the curb 62 to remove garbage from the rainwater outlet.

[0036] Reference Figure 2 and Figure 4 A plurality of water inlet holes 521 for the water accumulated on the road surface 61 to pass through the filter plate 52 are opened along the thickness direction of the filter plate 52, and the plurality of water inlet holes 521 are evenly distributed on the filter plate 52; the cross-section of the water inlet holes 521 is rectangular as a whole, and its length direction is parallel to the length direction of the filter plate 52; the plurality of water inlet holes 521 are evenly spaced and distributed in multiple rows along the length direction of the filter plate 52, and the plurality of water inlet holes 521 in the same row are evenly spaced and distributed along the width direction of the filter plate 52.

[0037] A plurality of raised portions 522 are distributed on one side of the filter plate 52 in the thickness direction, and a gap is formed between the plurality of raised portions 522 and the plurality of rows of water inlet holes 521. The plurality of raised portions 522 form a plurality of recessed spaces 523 on one side of the filter plate 52 in the thickness direction; the plurality of recessed spaces 523 correspond one-to-one to the plurality of rows of water inlet holes 521, and one end of the plurality of water inlet holes 521 in the same row is connected to the corresponding recessed space 523.

[0038] When the filter plate 52 is rotated to its limit position toward the base 51, water accumulated on the road surface 61 above the filter plate 52 can flow into the water inlet 511 through the multiple water inlet holes 521, and then into the rainwater outlet through the water inlet 511. Furthermore, at this point, the top of the raised portion 522 of the filter plate 52 is flush with the top end surface of the base 51, facilitating the flow of water from the road 6 near the water collection grate 5 into the recessed space 523. This also reduces the impact of pedestrians or vehicles passing over the water collection grate 5 on the structure of the filter plate 52 near the water inlet holes 521.

[0039] Reference Figure 1 and Figure 2The filter assembly 53 is installed on the filter plate 52 , and the multiple filter assemblies 53 correspond to the multiple water inlet holes 521 one by one.

[0040] Reference Figure 2 and Figure 4 The filter assembly 53 includes a cover plate 531 , a floating member 532 , a plurality of intercepting members 533 and a filter screen 534 .

[0041] Reference Figure 1 and Figure 4 The cover plate 531 is an overall rectangular plate-shaped structure, with one side of its width being pivotally connected to the filter plate 52. Its rotation axis is parallel to its own length and to the length of the filter plate 52. The position where the cover plate 531 is pivotally connected to the filter plate 52 is located on the side of the corresponding water inlet 521 close to the curb 62. When the cover plate 531 is rotated to its extreme position toward the filter plate 52, the top end surface of the cover plate 531 is flush with the top end surface of the filter plate 52, and the cover plate 531 can cover the corresponding water inlet 521, preventing water accumulated on the road surface 61 from passing through the corresponding water inlet 521.

[0042] Reference Figure 4 and Figure 5 The floating member 532 is fixedly mounted on the side of the cover plate 531, away from the pivotal connection between the cover plate 531 and the filter plate 52. The floating member 532 is affected by the buoyancy of the water on the road surface 61. When a certain amount of water on the road surface 61 flows into the recessed space 523, the floating member 532 tends to move upward under the buoyancy of the water on the road surface 61, thereby causing the corresponding cover plate 531 to rotate a certain angle away from the filter plate 52. At this point, the cover plate 531 tilts upward in the width direction, away from the curb 62. A drainage gap 7 is formed between the cover plate 531 and the filter plate 52, allowing the water on the road surface 61 to pass through. The water on the road surface 61 can then flow through the drainage gap 7 into the corresponding water inlet 521. However, most of the garbage (larger garbage) carried by the water on the road surface 61 is restricted by the size of the drainage gap 7 and is intercepted by the cover plate 531. In this embodiment, the floating member 532 is preferably made of foam material.

[0043] The intercepting member 533 is installed between the corresponding cover plate 531 and the filter plate 52, connecting the edge of the cover plate 531 away from its own rotation axis to the portion of the corresponding water inlet 521 on the filter plate 52 away from the rotation axis of the corresponding cover plate 531. This serves to limit the rotation angle of the cover plate 531 relative to the filter plate 52, while also intercepting more waste, preventing more waste (large and medium-sized waste) from entering the water inlet 521. In this embodiment, multiple intercepting members 533 are preferably distributed at equal intervals along the length of the cover plate 531.

[0044] The intercepting member 533 includes two intercepting parts 5331 and an elastic part 5332 .

[0045] The intercepting members 5331 are rod-shaped structures. The ends of the two intercepting members 5331 are rotatably connected. The other end of one intercepting member 5331 is rotatably connected to the corresponding cover plate 531, and the other end of the other intercepting member 5331 is rotatably connected to the filter plate 52. The rotation axes of the ends of the two intercepting members 5331 are parallel to the rotation axes of the corresponding cover plates 531. The elastic member 5332 is installed between the ends of the two intercepting members 5331. Its two ends are fixedly connected to the ends of the two intercepting members 5331, and it has the tendency to drive the other ends of the two intercepting members 5331 to rotate toward each other until they contact and abut. In this embodiment, the elastic member 5332 is preferably a torsion spring. Since torsion springs are common in the prior art, they are not described in detail here. The drawings only show their installation positions and omit their structure.

[0046] The elastic member 5332 drives the two intercepting members 5331 to rotate, causing the cover plate 531 to rotate toward the filter plate 52 to its limit position and remain there, at which point the intercepting members 533 can be hidden between the cover plate 531 and the filter plate 52. In this embodiment, the filter plate 52 preferably has a plurality of corresponding spaces for the intercepting members 533 to hide.

[0047] When a certain amount of water accumulated on the road surface 61 flows into the recessed space 523, the buoyancy of the water on the floating member 532 becomes greater than the force exerted by the multiple elastic members 5332, allowing the cover plate 531 to overcome the force exerted by the multiple elastic members 5332 and rotate to its limit position away from the filter plate 52. At this point, the length directions of the two intercepting members 5331 are parallel, the cover plate 531 remains tilted upward in its width direction away from the curb 62, and the top of the cover plate 531 does not exceed the top of the raised portion 522, effectively reducing the probability of pedestrians or vehicles passing over the water collection grate 5 coming into contact with the filter assembly 53 and damaging it. In this embodiment, preferably, when the cover plate 531 rotates to its limit position away from the filter plate 52, the top of the cover plate 531 is flush with the top of the raised portion 522.

[0048] Afterwards, when the accumulated water on the road surface 61 in the recessed space 523 is drained to at least a certain amount, the force of the multiple elastic members 5332 will cause the cover plate 531 to rotate and reset, and the process of the cover plate 531 rotating and resetting will drive the multiple intercepting components 533 to fold and deform. During the process of folding and deforming, the intercepting components 533 can push the garbage intercepted by them away from the water inlet 521, so that subsequent cleaning personnel can remove the garbage remaining above the filter plate 52.

[0049] The filter screen 534 is an overall rectangular plate-like structure with a certain degree of elastic deformation, capable of filtering small-sized waste. One side of the filter screen 534 is fixedly connected to the corresponding cover plate 531 near its own rotational axis, while the other side of the filter screen 534 is removably connected to the wall of the corresponding water inlet 521 on the filter plate, away from the rotational axis of the corresponding cover plate 531. In other words, the filter screen 534 is entirely located in the corresponding water inlet 521. In this embodiment, the filter screen 534 is preferably removably connected to the filter plate 52 via a snap-fit connection. Since snap-fit connections are common in the prior art, they will not be described in detail here and are only briefly illustrated in the accompanying drawings.

[0050] When the cover plate 531 is rotated to the extreme position toward the filter plate 52, the corresponding filter screen 534 is in a position in the corresponding clearance hole with the width direction tilted downward toward the direction away from the curb 62, and the filter screen 534 does not undergo elastic deformation at this time; when the cover plate 531 is rotated to the extreme position toward the direction away from the filter plate 52, the filter screen 534 is bent and deformed due to extrusion between the end away from the corresponding cover plate 531 and the hole wall of the corresponding water inlet hole 521 (bulging downward toward the water inlet 511), so that the filter screen 534 can intercept small-sized garbage entering the water inlet hole 521.

[0051] Reference Figure 4 and Figure 6 When the filter screen 534 is clogged with garbage due to long-term use, the bending deformation of the filter screen 534 during the rotation of the cover plate 531 can play a certain role in clearing the blockage, thereby facilitating the water accumulated on the road surface 61 entering the water inlet 521 through the filter screen 534; and, when the filter plate 52 is rotated to the extreme position in the direction away from the seat body 51 for the cleaning staff to clear the garbage in the rainwater outlet, it can also be convenient for the cleaning staff to clear the blockage of multiple filter screens 534, and the garbage generated by the clearing of the filter screen 534 can enter the rainwater outlet along the filter plate 52, making it convenient for the cleaning staff to deal with it at the curb 62, and at the same time, it can be convenient for the subsequent cleaning staff to clear the garbage in the rainwater outlet together, thereby reducing the probability of the garbage returning to the road surface 61 for secondary pollution.

[0052] The implementation principle of a prefabricated concrete drainage component in the embodiment of the present application is as follows: When there is no water on the road surface 61 or only a small amount of water on the road surface 61 needs to be drained, the multiple cover plates 531 can cover the multiple water inlet holes 521 to prevent garbage from entering the rainwater inlet along with the water on the road surface 61, making it easier for subsequent cleaning personnel to directly remove the garbage above the filter plate 52; When a large amount of water on the road surface 61 needs to be discharged, the water on the road surface 61 gathers in the direction close to the water collecting grate 5 and then flows into the recessed space 523. The multiple cover plates 531 will be affected by the buoyancy of the corresponding floating parts 532 in the water on the road surface 61 and rotate in the direction away from the filter plate 52 to form drainage gaps 7 for the water on the road surface 61 to pass through, so that the water on the road surface 61 can smoothly pass through the drainage gaps 7, the water inlet holes 521 and the water inlet 511 in sequence into the rainwater outlet for discharge; in this process, garbage moving with the flow of the water on the road surface 61 will be intercepted by the multiple cover plates 531, the multiple intercepting members 533 and the multiple filter screens 534 in succession, reducing the probability of garbage entering the rainwater outlet and forming a blockage, ensuring the drainage effect of the rainwater outlet while extending the service life of the rainwater outlet, thereby effectively improving the durability and impermeability of the prefabricated concrete drainage component; After a large amount of water accumulated on the road surface 61 is drained, the intercepted garbage will remain on the filter plate 52 and the multiple filter screens 534. The garbage on the filter plate 52 is convenient for cleaning staff to remove later, and the garbage left on the multiple filter screens 534 will be cleared during the subsequent inspection and cleaning of the rainwater inlet by cleaning staff, so as to facilitate its long-term and effective garbage interception effect.

[0053] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A prefabricated concrete drainage component, comprising a water collecting grate (5), characterized in that: The water collecting grate (5) comprises a seat (51), a filter plate (52) and a plurality of filter components (53); The seat (51) is fixedly arranged at the edge of the road (6), and the top of the seat (51) is lower than the road surface (61) of the road (6); The seat (51) has a water inlet (511) for the accumulated water to flow into the interior, the filter plate (52) is movably connected to the seat (51), and the filter plate (52) is used to cover the water inlet (511); the filter plate (52) is provided with a plurality of water inlet holes (521) for the accumulated water to flow into the water inlet (511), and the water inlet holes (521) penetrate the filter plate (52); The filter assembly (53) is arranged on the top of the filter plate (52) covering the water inlet (511), and a plurality of filter assemblies (53) correspond one-to-one to a plurality of water inlet holes (521); The filter assembly (53) includes a cover plate (531) and a floating member (532); The cover plate (531) is rotatably connected to the filter plate (52) and is used to control the opening and closing of the corresponding water inlet hole (521); the floating member (532) is arranged on a side of the cover plate (531) away from the rotational connection position between the cover plate (531) and the filter plate (52), and is affected by the buoyancy of the accumulated water; When there is no water accumulation on the road surface (61), the cover plate (531) keeps covering the corresponding water inlet hole (521); when there is a certain amount of water accumulation on the road surface (61), the floating member (532) drives the cover plate (531) to rotate so that the accumulated water flows into the corresponding water inlet hole (521).

2. A prefabricated concrete drainage component according to claim 1, characterized in that: The filter plate (52) has a plurality of raised portions (522) on one side close to the filter assembly (53), the plurality of raised portions (522) enclose a plurality of recessed spaces (523), and the plurality of water inlet holes (521) are respectively in communication with the plurality of recessed spaces (523).

3. The prefabricated concrete drainage component according to claim 1, characterized in that: The rotation axis of the cover plate (531) is parallel to the length direction of the road (6), and the side of the cover plate (531) close to the curb (62) is rotatably connected to the filter plate (52).

4. The prefabricated concrete drainage component according to claim 1, characterized in that: When the cover plate (531) is rotated to an extreme position in a direction away from the filter plate (52), a drainage slit (7) communicating with the corresponding water inlet hole (521) is formed between the cover plate (531) and the filter plate (52) for the accumulated water to flow into.

5. The prefabricated concrete drainage component according to claim 4, characterized in that: The filter assembly (53) further includes a plurality of intercepting members (533); The two ends of the intercepting member (533) are respectively connected to the edge position of the cover plate (531) away from its own rotation axis and the position of the filter plate (52) close to the corresponding water inlet hole (521); when the cover plate (531) covers the corresponding water inlet hole (521), the intercepting member (533) is hidden between the cover plate (531) and the filter plate (52); when the cover plate (531) rotates to the extreme position in the direction away from the filter plate (52), the intercepting member (533) forms an interception in the drainage gap (7).

6. The prefabricated concrete drainage component according to claim 5, characterized in that: The intercepting member (533) includes two intercepting members (5331) and an elastic member (5332); One end portion of the two intercepting members (5331) is rotatably connected, and the other end portions of the two intercepting members (5331) are rotatably connected to the corresponding cover plate (531) and the filter plate (52), respectively; the elastic member (5332) is arranged between the two intercepting members (5331) and has a tendency to drive the two intercepting members (5331) to rotate closer together; During the process of the cover plate (531) rotating in a direction close to the filter plate (52), the intercepting member (533) folds to push out the intercepted objects.

7. The prefabricated concrete drainage component according to claim 3, characterized in that: The filter assembly (53) further includes a filter screen (534); the filter screen (534) is arranged on the filter plate (52) and covers the corresponding water inlet hole (521).

8. The prefabricated concrete drainage component according to claim 7, characterized in that: The filter screen (534) is elastic; one end of the filter screen (534) is connected to the corresponding cover plate (531), and the other end is in contact with and abuts against the hole wall of the corresponding water inlet hole (521).

9. The prefabricated concrete drainage component according to claim 8, characterized in that: The side of the filter plate (52) close to the curb (62) is rotatably connected to the base (51), and the rotation axis of the filter plate (52) is parallel to the rotation axis of the cover plate (531).

10. The prefabricated concrete drainage component according to claim 9, characterized in that: When the filter plate (52) is rotated to an extreme position in a direction away from the base (51), the filter plate (52) tilts upward in a direction close to the curb (62), and the end of the filter screen (534) away from the corresponding cover plate (531) is detachably connected to the filter plate (52).

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