A water inlet and drainage system for municipal roads and bridges

Abstract

The present invention provides a water inlet and drainage system for municipal roads and bridges. The top of the cylindrical seat is provided with a wellhead flush with the ground, and the bottom is provided with a drainage branch connected to the underground water pipeline. The inner wall of the central cavity of the solid storage unit is provided with a storage ring groove opening upward. The rotary separation unit is detachably arranged in the central cavity and is provided with a solid-liquid separation basket driven by a rotary motor to rotate around a vertical central axis. The solid-liquid separation basket is configured to receive ground surface water flowing in through the water inlet through hole and perform solid-liquid separation by centrifugal action, transporting the generated solid separation to the storage ring groove and the separated water to the drainage branch. The provided water inlet and drainage system uses the solid-liquid separation basket to drain water statically and remove water by centrifugation, and utilizes solid impurities collected in the storage ring groove to prevent solid impurities from falling into the drainage branch or clogging the wellhead of the solid-liquid separation basket, thereby achieving continuous filtration and separation and facilitating subsequent sanitation treatment.

Description

Technical Field

[0001] The present invention relates to the technical field of municipal road and bridge engineering, and in particular provides a water inlet and drainage system for municipal roads and bridges. Background Art

[0002] With the continuous development of cities, the water supply and drainage systems of municipal road and bridge projects are also expanding. They are widely used to discharge and treat surface water, such as rainwater and domestic sewage, effectively keeping the ground clean and preventing surface water from affecting environmental sanitation and urban life. During rainfall, fallen leaves and small debris on the ground mix with rainwater and enter surface water drainage wells, which can easily cause blockage of underground water pipelines.

[0003] To this end, some surface drainage wells have fixed filter plates and screens installed at their wellheads to filter fallen leaves and fine ground debris, allowing for the outflow of filtered clean water. This, to a certain extent, alleviates the blockage problem caused by solids falling directly into underground water pipes. However, these fixed filter plates and screens are unable to effectively separate and dehydrate the filtered solids, resulting in excessive water content within the solids. Furthermore, the filtered solids cannot be automatically discharged. Over time, solids accumulate at the wellhead, causing blockage. Summary of the Invention

[0004] Based on this, the present invention provides a water intake and drainage system for municipal roads and bridges to improve the effective filtration and separation of solids in the process of ground water treatment, and to realize the collection of filtered and separated solids, so as to prevent solid impurities from falling into underground transmission pipelines or clogging wellheads.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a water inlet and drainage system for municipal roads and bridges is provided, including a cylindrical seat body, a solid storage unit and a rotary separation unit; the top of the cylindrical seat body is provided with a wellhead flush with the ground, and the bottom is provided with a drainage branch pipe connected to the underground water pipeline; the solid storage unit is detachably arranged in the cylindrical seat body, and is provided with a vertically through central cavity, and the inner wall of the central cavity is provided with a storage ring groove opening upward; the rotary separation unit is detachably arranged in the central cavity, including a manhole cover provided with a water inlet through hole, and the bottom of the manhole cover is provided with a solid-liquid separation basket driven by a rotary motor to rotate around a vertical central axis, the solid-liquid separation basket is configured to receive ground water flowing in from the water inlet through hole, perform static filtration in parallel, and perform solid-liquid separation by centrifugal action, and transport the generated solid separation to the storage ring groove and the separated water to the drainage branch pipe.

[0006] Furthermore, a protective shell with a downward opening is provided at the bottom of the manhole cover, the circular array of water inlet holes is arranged outside the protective shell, the rotary motor is installed in the protective shell and the motor shaft is arranged downward, and the upper end of the central rotating rod supporting the solid-liquid separation basket is connected to the motor shaft.

[0007] Furthermore, the solid-liquid separation basket includes a central basket body coaxially arranged with the central rotating rod and opening upward, the basket bottom of the central basket body is provided with a bottom drainage hole, the basket wall extends upward, and the outer periphery of the basket wall is evenly distributed with multiple radial openings, each of the radial openings is hinged with an inner baffle that can be flipped outward, and the inner baffle is provided with an outer drainage hole, and the water inlet through hole is arranged relative to the radial opening of the central basket body up and down.

[0008] Furthermore, the central basket body is provided with radial guide grooves extending outward in the horizontal direction at each radial opening, and groove walls extending upward are provided on both sides of the radial guide grooves. The groove bottom is vertically penetrated to guide the separated water discharged from the outer drainage holes to be discharged downward from the groove bottom, and the cross-sectional width of the radial guide groove is greater than the width of the inner baffle.

[0009] Furthermore, the inner baffle is hinged on the inner hinge at the bottom of the radial opening. When the central basket body is in a stationary state, the inner baffle is in a vertical state and close to the radial opening of the basket wall. When the rotary motor drives the central basket body to rotate at a low speed, the inner baffle is flipped outward to a horizontal state under the action of centrifugal force and is supported by the bottom support plate of the radial guide groove. The solid separated matter in the central basket body is discharged from each radial opening into the radial guide groove above the horizontal inner baffle.

[0010] Furthermore, the rotating separation unit is provided with a mechanical sensor for monitoring changes in the weight carried by the central basket. The mechanical sensor is connected to the controller signal of the rotating motor. The controller is configured to receive and control the start and stop of the rotating motor according to the monitored changes in the weight carried. When it is monitored that the weight carried by the central basket exceeds the set range value, the rotating motor is controlled to start and enter the low speed state and the high speed state in sequence.

[0011] Compared with the current technology of fixing a filter screen in the wellhead to filter out solid impurities, the technical advantages of the water inlet and drainage system for municipal roads and bridges provided by the present invention are at least reflected in the following aspects:

[0012] 1. A solid-liquid separation basket driven by a rotary motor is installed under the manhole cover to statically filter the surface water that falls into the ground. The filtered clean water flows downward into the drainage branch pipe. The rotary motor drives the solid-liquid separation basket to rotate and centrifuge the water-containing solids to further remove the contained water. The solid separation is thrown outward by the centrifugal force and transported to the storage ring groove. The generated separated water falls into the drainage branch pipe. The storage ring groove realizes the centralized collection of solid impurities separated by centrifugation, while avoiding the blockage of the wellhead and the underground transmission pipeline.

[0013] 2. By providing radial openings on the outer periphery of the basket wall, and arranging outwardly flippable inner baffles in the radial openings, and with outer drainage holes in the inner baffles, the central basket rotates at low speed, causing centrifugal motion of the solids and water in the central basket. The inner baffles are further opened by centrifugal force, and the water-containing solid impurities enter the radial guide grooves, where the rotation radius increases. The centrifugal force exerted on the water-containing solids increases, further centrifugally separating them. The outer baffles are opened by the centrifugal force of the high-speed rotation, thus achieving multi-stage solid-water separation and solids discharge into the storage ring groove.

[0014] 3. The weight of the solid surface water collected in the central basket is monitored by a mechanical sensor. When the weight of the collected solid surface water exceeds the set range, the controller automatically controls the rotation motor to start, perform low-speed rotation separation and high-speed rotation separation, and then centrifugally throw it into the storage ring groove of the solid storage unit to empty the central basket, thereby realizing the solid-liquid separation treatment of the surface water and the orderly collection of solids, and improving the degree of automation of the treatment of the surface water. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of a water inlet and drainage system for a municipal road and bridge (partial structure removed);

[0017] Figure 2 This is a schematic plan view of an embodiment of a water inlet and drainage system for a municipal road and bridge;

[0018] Figure 3 This is a schematic diagram of the disassembled state of a water inlet and drainage system for a municipal road and bridge;

[0019] Figure 4 It is a three-dimensional view of a water inlet and drainage system for a municipal road and bridge;

[0020] Figure 5 It is a structural diagram of the provided inner cylinder (partial structure removed);

[0021] Figure 6 is a schematic structural diagram of an embodiment of the provided rotary separation unit;

[0022] Figure 7 yes Figure 6 Schematic diagram of the structure in split state;

[0023] Figure 8 It is a schematic diagram of the structure of the split state of the provided rotating separation body;

[0024] Figure 9 It is a schematic structural diagram of the provided rotating seat body;

[0025] Figure 10 It is a schematic diagram of the provided rotating separation body in a stationary draining state;

[0026] Figure 11 It is a schematic diagram of the provided rotating separation body in a state of centrifugal separation;

[0027] Figure 12 A schematic diagram of a rotating separation body is provided in a state where solid matter is discharged outwards.

[0028] Description of the accompanying drawings:

[0029] 1- cylindrical seat, 11- drainage branch pipe;

[0030] 2-solid storage unit, 21a-upper storage ring groove, 21b-lower storage ring groove, 22-central cavity;

[0031] 3-rotating separation unit, 31a-upper solid-liquid separation basket, 31b-lower solid-liquid separation basket, 311-central basket body, 312-inner baffle, 313-outer baffle, 314-basket wall, 315-radial opening, 316-radial guide groove, 317-groove bottom, 318-bottom support plate, 319-inner hinge, 32-manhole cover, 33-rotating motor, 34-mechanical sensor, 35-central rotating rod.

[0032] It should be understood that the size of each part shown in the drawings is not drawn according to the actual proportional relationship.In addition, the same or similar reference numerals represent the same or similar components. DETAILED DESCRIPTION

[0033] In current municipal road and bridge projects, fixed filter plates and fixed filter screens are installed in the wellheads of ground discharge wells to separate fallen leaves and fine debris on the ground and to transport the filtered clean water outward. This alleviates the blockage problem of solids falling directly into underground water pipelines to a certain extent. However, such fixed filter plates and fixed filter screens cannot effectively separate and remove water from the filtered solids, resulting in excessive water content in the solids and the inability to automatically discharge the filtered solids. After a long time, the solids accumulate at the wellhead and cause blockage.

[0034] To this end, the present invention provides a water inlet and drainage system for municipal roads and bridges, wherein the top of the cylindrical seat is provided with a wellhead flush with the ground, and the bottom is provided with a drainage branch connected to the underground water pipeline; the central cavity of the solid storage unit is provided with a storage ring groove opening upward; the rotary separation unit is provided with a solid-liquid separation basket driven by a rotary motor to rotate around a vertical central axis, and the solid-liquid separation basket is configured to receive ground surface water flowing in from the water inlet through hole, perform static filtration in parallel, and perform solid-liquid separation by centrifugal action, and transport the generated solid separation to the storage ring groove and the separated water to the drainage branch. By implementing the above drainage system, the effective filtration and separation of solids in the process of ground surface water treatment is improved, and the filtered and separated solids are collected, achieving continuous treatment, and preventing solid impurities from falling into the underground transmission pipeline or clogging the wellhead.

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0036] Example 1:

[0037] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the present invention provides a water inlet and drainage system for municipal roads and bridges, comprising a cylindrical seat 1, a solid storage unit 2, and a rotary separation unit 3. The cylindrical seat 1 is provided with a wellhead flush with the ground at the top and a drainage branch 11 connected to an underground water pipeline at the bottom; the solid storage unit 2 is detachably disposed within the cylindrical seat 1 and is provided with a vertically through-going central cavity 22, the inner wall of which is provided with a storage ring groove opening upward; the rotary separation unit 3 is detachably disposed within the central cavity 22 and comprises a well cover 32 provided with a water inlet through hole, the bottom of which is provided with a solid-liquid separation basket driven by a rotary motor 33 to rotate around a vertical central axis. The solid-liquid separation basket is configured to receive ground water flowing in through the water inlet through hole, perform static filtration, and perform solid-liquid separation by centrifugal action, transporting the generated solid separation to the storage ring groove and the separated water to the drainage branch 11.

[0038] The working principle of the water inlet and drainage system for municipal roads and bridges provided is as follows: after the local surface water falls into the solid-liquid separation basket through the water inlet hole of the manhole cover 32, first, it undergoes static filtration in the solid-liquid separation basket, and most of the clean water is filtered out and flows downward into the drainage branch pipe 11, while the water-containing solids are retained in the solid-liquid separation basket; then, the rotary motor 33 drives the solid-liquid separation basket to rotate and perform solid-liquid separation under centrifugal action. The solid separation is thrown outward by the centrifugal action and transported to the storage ring groove, and the generated separated water falls into the drainage branch pipe 11.

[0039] Based on the above embodiment, the water intake and drainage system for municipal roads and bridges provided herein, by arranging a solid-liquid separation basket driven by a rotating motor below the wellhead, statically filters the surface water falling on the ground, and centrifugally separates the retained water-containing solids to further remove the contained water, and then throws them out and transports them to the storage ring groove, which can efficiently separate the solid and liquid of the surface water, avoid solid impurities entering the underground water supply pipeline and causing blockage problems, and realize the smooth flow of the solid-liquid separation basket, avoid the accumulation of solid impurities in the solid-liquid separation basket and cause the circulation and filtration capacity to be reduced, and utilize the storage ring groove to realize the centralized collection of the solid impurities separated by centrifugation, facilitate subsequent lifting and centralized removal, and facilitate subsequent sanitation treatment.

[0040] Example 2:

[0041] Based on Example 1, the structures of the solid storage unit and the solid-liquid separation basket were optimized, and a central basket body and radial guide grooves were set. An inner baffle was set on the central basket body, and an outer baffle was set outside the radial guide grooves. The details are as follows:

[0042] like Figure 5 As shown, the solid storage unit 2 includes an outer cylinder, an inner cylinder and an annular partition. The outer cylinder is engaged with the cylindrical seat 1, and the inner cylinder is concentrically arranged with the outer cylinder. The partition is connected to the bottom of the annulus between the outer cylinder and the inner cylinder and is provided with a drainage hole. The outer cylinder, the inner cylinder and the annular partition constitute a storage ring groove with an annular upper opening structure.

[0043] like Figure 6 、 Figure 7 、 Figure 8 and Figure 9 As shown, during implementation, a protective shell with a downward opening is provided at the bottom of the manhole cover 32, the circular array of water inlet holes is arranged outside the protective shell, the rotary motor 33 is installed in the protective shell and the motor shaft is arranged downward, and the upper end of the central rotating rod 35 carrying the solid-liquid separation basket is connected to the motor shaft.

[0044] During implementation, the solid-liquid separation basket includes a central basket body 311 coaxially arranged with the central rotating rod 35 and opening upward. The bottom of the central basket body 311 is provided with a bottom drainage hole, and the basket wall 314 extends upward. The outer periphery of the basket wall 314 is evenly distributed with multiple radial openings 315, and each of the radial openings 315 is hinged with an inner baffle 312 that can be flipped outward. The inner baffle 312 is provided with an outer drainage hole, and the water inlet through hole is arranged opposite to the radial opening 315 of the central basket body 311 in the upper and lower directions. The interior of the inner cylinder constitutes a central cavity 22 for accommodating the vertically raised solid-liquid separation basket.

[0045] like Figure 10 As shown, based on the above embodiment, a bottom drain hole is set at the bottom of the basket of the central basket body 311, and a radial opening 315 is set on the periphery of the basket wall. The radial opening 315 is shielded by an inner baffle 312 that can be flipped outward, and the inner baffle is provided with an outer drain hole. The central basket body 311 collects ground water flowing down from the water inlet hole of the manhole cover. When the rotating motor 33 is not working, the clean water in the collected ground water is discharged outward from the bottom drain hole and the outer drain hole of the central basket body 311 under the action of gravity, falls into the bottom of the cylindrical seat body 1 along the central cavity 22, and is discharged outward from the drainage branch pipe 11, thereby realizing static drainage and preliminarily reducing the water content of the water-containing solids.

[0046] like Figure 9 As shown, further, in a preferred embodiment, the central basket body 311 is provided with radial guide grooves 316 extending outward in the horizontal direction at each radial opening 315, and upwardly extending groove walls are provided on both sides of the radial guide grooves 316. The groove bottom 317 is vertically penetrated to guide the separated water discharged from the outer drainage holes to be discharged downward from the groove bottom 317, and the cross-sectional width of the radial guide groove 316 is greater than the width of the inner baffle 312. The inner baffle 312 is hinged on the inner hinge 319 at the bottom of the radial opening 315. When the central basket 311 is in a stationary state, the inner baffle 312 is in a vertical position and close to the radial opening 315 of the basket wall 314. When the rotary motor 33 drives the central basket 311 to rotate at a low speed, the inner baffle 312 flips outward to a horizontal position under the action of centrifugal force and is supported by the bottom support plate 318 of the radial guide groove 316. The solid separated matter in the central basket 311 is discharged from the radial openings 315 into the radial guide groove 316 above the horizontal inner baffle 312. The outer baffle 313 flips outward and extends above the upper opening structure.

[0047] An outer baffle 313 is provided at the outer end of each radial guide groove 316, and the outer baffle 313 is hinged on an outer hinge at the bottom of the outer end of the radial guide groove 316. When the rotary motor 33 drives the central basket 311 to rotate at a low speed, the outer baffle 313 is in a vertical state and close to the outer end opening of the radial guide groove 316. When the rotary motor 33 drives the central basket 311 to rotate at a high speed, the outer baffle 313 is flipped outward to a horizontal state under the action of centrifugal force and is supported by the groove bottom 317 at the outer end of the radial guide groove 316. The solid separated matter in the radial guide groove 316 is discharged outward from the radial guide groove 316 through the horizontal outer baffle 313 to the storage ring groove.

[0048] During implementation, the inner hinge 319 is provided with an inner torsion spring that applies an inward thrust to the inner baffle 312 so that it is in a vertical state and close to the radial opening 315, and the outer hinge is provided with an outer torsion spring that applies an inward thrust to the outer baffle 313 so that it is in a vertical state and close to the outer end of the radial guide groove 316, and the torque force of the inner torsion spring is smaller than the torque force of the outer torsion spring.

[0049] When the rotary motor 33 drives the central basket 311 to rotate at a low speed, the water-containing solids generate centrifugal motion in the central basket 311, and the separated water is thrown out from the bottom drain holes and the outer drain holes of the central basket 311, thereby further reducing the water content of the water-containing solids.

[0050] like Figure 11 As shown, radial guide grooves 316 extending radially outward are provided at each radial opening 315 of the central basket 311. When the rotary motor 33 drives the central basket 311 to rotate at a low speed, the inner baffle 312 is opened by the centrifugal force, and the water-containing solid impurities in the central basket 311 enter the radial guide grooves 316. At this time, the rotation radius of the water-containing solid impurities becomes larger, and the centrifugal force applied to the water-containing solids becomes larger than that in the central basket, thereby further separating the water from the water-containing solids and further reducing the water content of the water-containing solids.

[0051] like Figure 12 As shown, when the rotary motor 34 drives the central basket 311 to rotate at high speed, the outer baffle 313 is flipped outward by the centrifugal force, and the solids produced by separation are thrown outward by the centrifugal force into the storage ring groove of the solid storage unit 2. After static drainage, centrifugal separation and dehydration in the central basket 311, and separation and dehydration in the radial guide groove 316, the moisture content in the solid is effectively reduced, the bearing weight of the storage ring groove is reduced, and the workload of subsequent removal of solid impurities is effectively reduced.

[0052] Example 3:

[0053] like Figure 6 and Figure 7As shown, in some embodiments, an automatic control design for starting and stopping the rotary motor is implemented. High and low speed states are set. Specifically, the rotary separation unit 3 is provided with a mechanical sensor 34 that monitors changes in the weight carried by the central basket 311. The mechanical sensor 34 is connected to a controller signal of the rotary motor 33. The controller is configured to receive and control the start and stop of the rotary motor 33 based on the monitored changes in the carried weight. When the weight carried by the central basket 311 is detected to exceed a set range, the rotary motor 33 is controlled to start and enter the low and high speed states in sequence.

[0054] The rotary motor 33 is provided with a low-speed state and a high-speed state. In the low-speed state, the centrifugal force applied to the inner baffle 312 is greater than the torque of the inner torsion spring and the inner baffle 312 flips outward, and the centrifugal force applied to the outer baffle 313 is less than the torque of the outer torsion spring and the outer baffle 313 remains close to the outer end of the radial guide groove 316; in the high-speed state, the centrifugal force applied to the outer baffle 313 is greater than the torque of the outer torsion spring and the outer baffle flips outward.

[0055] Based on the above embodiment, the weight change of the central basket 311 is monitored by the mechanical sensor 34. Under the condition that the weight of the central basket 311 remains unchanged, the weight of the solid-containing ground water collected in the central basket is monitored. When the weight of the collected solid-containing ground water exceeds the set range value, the controller automatically controls the rotation motor 33 to start, perform low-speed rotation separation and high-speed rotation separation, and then centrifugally throw it into the storage ring groove of the solid storage unit 2 to empty the central basket 311, and then collect the ground water again. Through the above cycle, the solid-liquid separation treatment of the ground water and the orderly collection of solids are realized, the blockage of solid impurities in the wellhead is avoided, and the degree of automation of the treatment of ground water is improved.

[0056] Example 4:

[0057] On the basis of the above embodiment, the structure is further optimized and vertical multi-layer separation is set to effectively improve the separation efficiency of solid-containing water.

[0058] like Figure 1 、 Figure 5 and Figure 6 As shown, specifically, during the implementation process, the rotating separation unit 3 includes at least an upper solid-liquid separation basket 31a and a lower solid-liquid separation basket 31b arranged vertically at intervals, and the solid storage unit 2 includes at least an upper storage ring groove 21a and a lower storage ring groove 21b arranged vertically at intervals, the upper solid-liquid separation basket 31a is arranged opposite to the upper opening of the upper storage ring groove 21a, and the lower solid-liquid separation basket 31b is arranged opposite to the upper opening of the lower storage ring groove 21b, the drainage hole of the upper solid-liquid separation basket 31a is larger than the drainage aperture of the lower solid-liquid separation basket 31b; the drainage hole of the upper storage ring groove 21a is larger than the drainage aperture of the lower storage ring groove 21b.

[0059] By configuring the upper solid-liquid separation basket 31a and the lower solid-liquid separation basket 31b, the drain hole of the upper solid-liquid separation basket 31a is set larger than the drain hole diameter of the lower solid-liquid separation basket 31b. This allows large-volume solids in the ground water to be collected in the upper solid-liquid separation basket 31a, while small-volume solids fall from the bottom drain hole of the upper solid-liquid separation basket 31a into the lower solid-liquid separation basket 31b, where they are collected. This allows solids of different volumes and particle sizes to be collected separately and subsequently centrifuged. The solids then enter the upper storage annular groove 21a and the lower storage annular groove 21b, respectively, achieving classified storage of solids of different volumes and particle sizes, effectively improving separation efficiency and facilitating subsequent solid removal and subsequent processing. Furthermore, the above process avoids the problem of excessively high peak power required for the rotary motor in a short period of time, reduces the load on the subsequent rotary motor 33 driving the central basket 311, and reduces the peak output torque of the rotary motor.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A water inlet and drainage system for municipal roads and bridges, characterized in that: include: A cylindrical seat (1) is provided with a wellhead flush with the ground at the top and a drainage branch pipe (11) connected to an underground water pipeline at the bottom; A solid storage unit (2) is detachably arranged in the cylindrical seat (1), and is provided with a vertically penetrating central cavity (22), wherein the inner wall of the central cavity (22) is provided with a storage ring groove opening upward; A rotary separation unit (3) is detachably disposed in the central cavity (22), comprising a manhole cover (32) provided with a water inlet through-hole, a solid-liquid separation basket being driven by a rotary motor (33) and rotating about a vertical central axis at the bottom of the manhole cover (32); The solid-liquid separation basket is configured to receive the ground surface water flowing in from the water inlet through-hole, perform static filtration in parallel, and perform solid-liquid separation by centrifugal action, and transport the generated solid separation to the storage ring groove and the separated water to the drainage branch pipe (11); The bottom of the manhole cover (32) is provided with a protective shell with an opening downward, the water inlet through-holes are arranged in a circumferential array outside the protective shell, the rotary motor (33) is installed in the protective shell with the motor shaft facing downward, and the upper end of the central rotating rod (35) carrying the solid-liquid separation basket is connected to the motor shaft; The solid-liquid separation basket includes a central basket body (311) coaxially arranged with a central rotating rod (35) and opening upward, the basket bottom of the central basket body (311) is provided with a bottom drain hole, a basket wall (314) extending upward, and a plurality of radial openings (315) uniformly distributed on the outer periphery of the basket wall (314); An inner baffle (312) capable of turning outward is hingedly connected to each radial opening (315), and the inner baffle (312) is provided with an outer drainage hole. The water inlet through hole and the radial opening (315) of the central basket body (311) are arranged vertically opposite to each other.

2. The water inlet and drainage system for municipal roads and bridges according to claim 1, characterized in that: The central basket body (311) is provided with radial guide grooves (316) extending outward in the horizontal direction at each radial opening (315). Groove walls extending upward are provided on both sides of the radial guide grooves (316). The groove bottom (317) is vertically penetrated to guide the separated water discharged from the outer drainage holes to be discharged downward from the groove bottom (317). The cross-sectional width of the radial guide grooves (316) is greater than the width of the inner baffle (312).

3. The water inlet and drainage system for municipal roads and bridges according to claim 2, characterized in that: The inner baffle (312) is hinged on an inner hinge (319) at the bottom of the radial opening (315). When the rotary motor (33) drives the central basket (311) to rotate at a low speed, the inner baffle (312) flips outward to a horizontal state under the action of centrifugal force and is supported by the bottom support plate (318) of the radial guide groove (316). The solid separated matter in the central basket (311) is discharged from each radial opening (315) into the radial guide groove (316) above the inner baffle (312) in a horizontal state.

4. The water inlet and drainage system for municipal roads and bridges according to claim 3, characterized in that: The rotary separation unit (3) is provided with a mechanical sensor (34) for monitoring changes in the weight carried by the central basket (311). The mechanical sensor (34) is connected to a controller signal of the rotary motor (33). The controller is configured to receive and control the start and stop of the rotary motor (33) according to the monitored changes in the weight carried.

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