Road green belt rainwater collection and treatment integrated recovery device

Abstract

This invention relates to the field of rainwater harvesting and treatment technology, and particularly to an integrated rainwater harvesting and treatment device for roadside green belts. It includes a water-diverting base plate, a pressing mechanism, mounting components, and a U-shaped pipe. The water-diverting base plate, together with the mounting components, forms an overall frame support structure via support rods. The U-shaped pipe is located at the lower part of the water-diverting base plate and connected to the pressing mechanism. The interior of the U-shaped pipe includes a liquid tank, a Venturi throat, a multi-segment centrifuge, and a hydraulic impeller. The pressing mechanism includes a first transmission mechanism, a pressing pretreatment component, and a gear transmission structure. The top main shaft of the hydraulic impeller is connected to the pressing pretreatment component via the first transmission mechanism and the gear transmission structure, driving two pressing plates to perform reciprocating pressing motions. The other end of the hydraulic impeller main shaft is connected to the multi-segment centrifuge via a second transmission mechanism. This invention addresses the problems of easy clogging and difficult cleaning in traditional rainwater treatment methods.

Description

Technical Field

[0001] The invention relates to the field of rainwater harvesting and treatment technology, and in particular to an integrated rainwater harvesting and treatment recycling device for road green belts. Background Technology

[0002] With increasing urban air and surface pollution, stormwater runoff pollution is becoming more severe, especially the heavily polluted initial stormwater (hereinafter referred to as first runoff). Numerous studies at home and abroad have shown that the water quality of initial runoff is very poor. In some areas, the highest levels of pollutant indicators in initial runoff are far higher than those of typical urban domestic sewage. Therefore, the treatment and disposal of initial runoff is a key technology for rainwater recycling.

[0003] Currently, traditional road stormwater treatment devices mostly rely on passive facilities such as gravity settling or simple filtration, such as storm drains, sedimentation tanks, and grassed swales. These facilities have low treatment efficiency, are prone to clogging, and have almost no ability to remove dissolved pollutants. Alternatively, they use active treatment systems with electric equipment (such as submersible pumps, mixers, and aerators). Although these systems have better treatment effects, they require external power supply. For municipal road green belts far from the power grid, this results in high construction costs and difficult operation and maintenance. Summary of the Invention

[0004] The purpose of this invention is to provide an integrated rainwater collection and treatment device for road green belts, so as to solve the problems of easy clogging and difficult cleaning of traditional rainwater treatment.

[0005] The technical implementation scheme of the invention is as follows:

[0006] An integrated rainwater collection and treatment device for road green belts includes a water intake base plate, an extrusion mechanism, mounting components, and a U-shaped pipeline. The water intake base plate, together with the mounting components, forms an overall frame support structure via support rods. The U-shaped pipeline is located at the lower part of the water intake base plate and is connected to the extrusion mechanism. The interior of the U-shaped pipeline includes a liquid tank, a Venturi throat, a multi-segment centrifuge, and a hydraulic impeller. The extrusion mechanism includes a first transmission mechanism, an extrusion pretreatment component, and a gear transmission structure. The top main shaft of the hydraulic impeller is connected to the extrusion pretreatment component via the first transmission mechanism and the gear transmission structure, driving two extrusion plates to perform reciprocating extrusion actions. The other end of the hydraulic impeller main shaft is connected to the multi-segment centrifuge via a second transmission mechanism to drive the multi-segment centrifuge to rotate. A multi-layer filter structure is provided at the bottom of the U-shaped pipeline.

[0007] Optionally, the extrusion pretreatment assembly includes a first extrusion plate, a second extrusion plate, an S-shaped guide groove, a push block, a sliding sleeve, and a compression spring. The first extrusion plate and the second extrusion plate are disposed opposite each other in the sliding sleeve, and an S-shaped guide groove is provided between the first extrusion plate and the second extrusion plate. One end of the second extrusion plate is connected to a gear transmission structure through the push block to reciprocate the second extrusion plate. One end of the compression spring is fixed to the side wall of the second extrusion plate, and the other end abuts against the outer wall of the first extrusion plate, forming an elastic structure with the push block.

[0008] Optionally, the gear transmission structure includes a drive gear, a rack, a sliding pusher frame, and a first rotating shaft. The first rotating shaft is disposed in a base at the bottom of the water-conducting substrate, and a sliding pusher frame is movably disposed inside the base. The rack on the inner side of the sliding pusher frame meshes with the drive gear on the first rotating shaft. The other end of the first rotating shaft is connected to a second rotating shaft inside the liquid tank through a first transmission mechanism.

[0009] Optionally, the first transmission mechanism includes a first synchronous belt, the two ends of which are respectively connected to a first synchronous pulley on the second rotating shaft and a second synchronous pulley on the first rotating shaft.

[0010] Optionally, a hydraulic impeller is provided at the upper end of the second rotating shaft, and the lower end of the second rotating shaft is connected to the multi-shaft centrifuge cylinder through a second transmission mechanism to drive the multi-shaft centrifuge cylinder to rotate; the bottom of the multi-shaft centrifuge cylinder is connected to the multi-layer filter structure through a third transmission mechanism.

[0011] Optionally, the second transmission mechanism is a speed-increasing unidirectional transmission device, which is used to increase the power of the hydraulic impeller and transmit it unidirectionally to the multi-shaft centrifuge drum to realize the directional speed-up operation of the centrifuge drum; the third transmission mechanism includes a second drive synchronous belt, the two ends of which are respectively connected to the bottom of the multi-shaft centrifuge drum and the third rotating shaft on the multi-layer filter structure.

[0012] Optionally, the multi-layer filter structure is a cylindrical structure, with the cylindrical wall comprising an inner layer, a middle layer, and an outer layer from the inside out; the inner layer is a support mesh with a pore size of 5 mm; the middle layer is a layer of immobilized microbial particles, composed of nitrifying and denitrifying bacteria embedded in polyvinyl alcohol gel; the outer layer is a fiber bundle packing layer, used for filtration and attachment of aerobic bacteria; the outlet of the multi-layer filter structure is connected to a bidirectional drainage channel, and the output ends of the bidirectional drainage channel are respectively connected to dual guide pipes; a pulse vibrator is installed on the wall of the U-shaped pipe.

[0013] Optionally, it also includes a Venturi throat located above the hydraulic impeller, the Venturi throat cooperating with the guide plate and connected to the outlet of the guide plate through a circulation bypass.

[0014] Optionally, the multi-shaft centrifuge cylinder has multiple hemispherical pits arrayed on its inner wall, a pulse sludge discharge valve is installed at the bottom of the multi-shaft centrifuge cylinder, and an outlet is connected to the bottom of the multi-shaft centrifuge cylinder, which is connected to the inlet of the multi-layer filter structure through a guide pipe.

[0015] Optionally, the bottom of the liquid tank is connected to a liquid guide pipe, and a rotating disk is rotatably arranged inside the liquid guide pipe. The rotating disk is connected to the second rotating shaft of the hydraulic impeller through a connecting sleeve. The rotating disk is arranged inside the rotating sleeve, and the upper surface of the rotating disk is provided with multiple radially arranged cutting teeth and radial flow guide grooves. The rotating cutting teeth simultaneously crush the sediment.

[0016] The invention has the following advantages:

[0017] In this invention, a hydraulic impeller, a pre-treatment component, a Venturi throat, a multi-shaft centrifuge, and a multi-layer filter are integrated within a U-shaped pipeline, enabling zero-energy operation by utilizing only the kinetic energy of rainwater runoff. The pre-treatment component, in conjunction with an S-shaped guide channel, pulse-type crushes coarse debris to prevent clogging; the Venturi throat, working in tandem with the overflow port, achieves low-flow reflux dilution and high-flow automatic flood discharge, ensuring the safe and stable operation of the hydraulic impeller. The cutting teeth of the rotating disc and the radial guide channel actively draw in sediment from the bottom of the liquid tank, preventing corrosion and homogenizing the feed. The multi-shaft centrifuge uses a speed-increasing gear set and a one-way clutch for high-speed centrifugal separation, while a hemispherical pit array efficiently captures particles; the multi-layer filter employs a layer of immobilized microbial particles and a layer of fiber bundle packing material for deep radial flow denitrification and phosphorus removal. A scraper and pulse vibrator enable online self-cleaning, and a bidirectional drainage channel, along with dual-path guide pipes, separates clean and polluted water, allowing sludge to be fermented and composted for return to the greenbelt soil. This results in a compact overall structure, requires no external energy, has high processing efficiency, and enables the resource utilization of sludge. Attached Figure Description

[0018] Figure 1 is a schematic diagram of the main structure of the present invention;

[0019] Figure 2 is a frontal view of the structure in this invention;

[0020] Figure 3 is a schematic diagram of the internal cross-sectional structure of the main body in this invention;

[0021] Figure 4 is a schematic diagram of the separation structure of the main body in this invention;

[0022] Figure 5 shows the invention. Figure 4 A magnified structural diagram at point A;

[0023] Figure 6 is a schematic diagram of the rotating disk in this invention;

[0024] Figure 7 is a schematic diagram of the multi-shaft centrifuge tube in this invention;

[0025] Figure 8 is a schematic diagram of the structure of the multi-layer filter in this invention.

[0026] Meaning of reference numerals in the figure: 100-Water-conducting base plate, 200-Extrusion mechanism, 210-First transmission mechanism, 220-Extrusion pretreatment assembly, 221-Including first extrusion plate, 222-S-shaped guide groove, 223-Second extrusion plate, 224-Pushing block, 225-Sliding sleeve, 226-Compression spring, 230-Gear transmission structure, 231-Drive gear, 232-Rack, 233-Sliding pusher frame, 234-First rotating shaft, 235-Base, 240-Liquid guide pipe, 241-Rotating disk, 2410-Rotating sleeve, 2412-Cutting tooth, 250-Liquid tank, 251-Hydraulic impeller, 252-Venturi throat, 300-Mounting component, 400-U Type of pipeline, 410-multi-segment shaft centrifuge, 412-pulse sludge discharge valve, 413-hemispherical pit, 414-outlet, 420-second transmission mechanism, 430-third transmission mechanism, 440-third rotating shaft, 450-multi-layer filter structure, 451-guide pipe, 452-inner layer, 453-middle layer, 454-outer layer, 460-sludge scraper, 500-pulse vibrator, 600-two-way liquid and sewage discharge channel, 700-dual-path guide pipe. Detailed Implementation

[0027] To make the purpose, technical solution, and advantages of the invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. It is hereby declared that any directional terms such as up, down, left, right, front, back, inside, and outside appearing or about to appear in this text are based solely on the accompanying drawings and are not intended to specifically limit the invention.

[0028] like Figures 1-5 As shown, the integrated rainwater collection and treatment device for road green belts includes a water-diverting base plate 100, a pressing mechanism 200, an installation component 300, and a U-shaped pipe 400. The water-diverting base plate 100, together with the installation component 300, forms an overall frame support structure via support rods. The U-shaped pipe 400 is located at the lower part of the water-diverting base plate 100 and is connected to the pressing mechanism 200. The U-shaped pipeline 400 is internally equipped with a liquid tank 250, a venturi throat 252, a multi-shaft centrifuge cylinder 410, and a hydraulic impeller 251. The extrusion mechanism 200 includes a first transmission mechanism 210, an extrusion pretreatment component 220, and a gear transmission structure 230. The top main shaft of the hydraulic impeller 251 is connected to the extrusion pretreatment component 220 via the first transmission mechanism 210 and the gear transmission structure 230, driving the two extrusion plates to perform reciprocating extrusion actions. The other end of the main shaft of the hydraulic impeller 251 is connected to the multi-shaft centrifuge cylinder 410 via a second transmission mechanism 420, driving the multi-shaft centrifuge cylinder 410 to perform rotary motion. The bottom of the U-shaped pipeline 400 is equipped with a multi-layer filter structure 450.

[0029] It should be noted that in rainwater treatment, traditional methods often rely on passive facilities such as gravity settling or simple filtration, like rainwater grates, sedimentation tanks, and vegetated swales, which are prone to clogging and difficult to clean after clogging. Therefore, the rainwater treatment equipment has been optimized to achieve integrated squeezing-crushing-dredging operations. Specifically, a U-shaped pipe 400 is installed at the bottom of the water intake plate 100 for guiding rainwater flow, and a squeezing mechanism 200 is installed inside the U-shaped pipe 400. This mechanism can transmit the rotational torque generated by the hydraulic impeller 251 to the squeezing pretreatment component 220 through the first transmission mechanism 210 and the gear transmission structure 230, thereby achieving power transmission. The squeezing pretreatment component 220 performs reciprocating squeezing operations to crush the incoming impurities and alleviate clogging.

[0030] It should be noted that the main shaft of the hydraulic impeller 251 is connected to the multi-shaft centrifuge cylinder 410 via the second transmission mechanism 420, thereby achieving synchronous rotation of the multi-shaft centrifuge cylinder 410. The high-speed rotation of the multi-shaft centrifuge cylinder 410 creates a centrifugal separation effect. Heavy solid particles in the mud-water mixture adhere to the cylinder wall under centrifugal force and are intercepted and deposited by the hemispherical pit array 413, while light clear liquid converges towards the axis. The multi-segment annular baffle of the cylinder can classify and sort particles of different sizes. The concentrated sludge is automatically discharged as needed by the pulse sludge discharge valve 412, and the separated clear liquid is transported to the next treatment unit through the outlet 414. Combined with the multi-layer filter structure 450, the filtration and separation of sewage are achieved, realizing the deep purification of water stains.

[0031] like Figures 1-4 As shown, the extrusion pretreatment assembly 220 includes a first extrusion plate 221, a second extrusion plate 223, an S-shaped guide groove 222, a push block 224, a sliding sleeve 225, and a compression spring 226. The first extrusion plate 221 and the second extrusion plate 223 are disposed opposite each other in the sliding sleeve 225, and an S-shaped guide groove 222 is provided between the first extrusion plate 221 and the second extrusion plate 223. One end of the second extrusion plate 223 is connected to the gear transmission structure 230 through the push block 224, which pushes the second extrusion plate 223 back and forth. One end of the compression spring 226 is fixed to the side wall of the second extrusion plate 223, and the other end abuts against the outer wall of the first extrusion plate 221, forming an elastic structure with the push block 224.

[0032] It should be noted that both the first extrusion plate 221 and the second extrusion plate 223 are located inside the sliding sleeve 225. The first extrusion plate 221 is fixed, while the second extrusion plate 223 is movable. The second extrusion plate 223 can be reciprocated by the push block 224 and the gear transmission structure 230. Together with the S-shaped guide groove 222 between the two extrusion plates, it can extrude impurities.

[0033] like Figures 1-6 As shown, the gear transmission structure 230 includes a drive gear 231, a rack 232, a sliding pusher frame 233, and a first rotating shaft 234. The first rotating shaft 234 is disposed in a base 235 at the bottom of the water-conducting substrate 100, and the sliding pusher frame 233 is movably disposed inside the base 235. The rack 232 on the inner side of the sliding pusher frame 233 meshes with the drive gear 231 on the first rotating shaft 234. The other end of the first rotating shaft 234 is connected to a second rotating shaft inside the liquid tank 250 through a first transmission mechanism 210. The first transmission mechanism 210 includes a first synchronous belt, and the two ends of the first synchronous belt are respectively connected to a first synchronous pulley on the second rotating shaft and a second synchronous pulley on the first rotating shaft 234.

[0034] It should be noted that, in order to achieve synchronous reciprocating drive at both ends, the drive gear 231 meshes with the rack 232 inside the sliding propulsion frame 233, and the entire sliding propulsion frame 233 moves left and right under the rotation of the first rotating shaft 234. During this process, the push rods at both ends of the sliding propulsion frame 233 cooperate with the push block 224 to achieve reciprocating propulsion.

[0035] It should be further explained that, in order to achieve reciprocating propulsion, the drive gear 231 adopts a half-gear structure, which can realize intermittent left and right propulsion. The first rotating shaft 234 is connected to the second rotating shaft through the first transmission mechanism 210 to transmit the power generated by the hydraulic impeller 251.

[0036] like Figures 1-7 As shown, a hydraulic impeller 251 is provided at the upper end of the second rotating shaft, and the lower end of the second rotating shaft is connected to the multi-shaft centrifuge cylinder 410 through a second transmission mechanism 420 to drive the multi-shaft centrifuge cylinder 410 to rotate; the bottom of the multi-shaft centrifuge cylinder 410 is connected to the multi-layer filter structure 450 through a third transmission mechanism 430; the second transmission mechanism 420 is a speed-increasing unidirectional transmission device, used to speed up the power of the hydraulic impeller 251 and transmit it unidirectionally to the multi-shaft centrifuge cylinder 410 to realize the directional speed-up operation of the centrifuge cylinder; the third transmission mechanism 430 includes a second drive synchronous belt, and the two ends of the second drive synchronous belt are respectively connected to the bottom of the multi-shaft centrifuge cylinder 410 and the third rotating shaft 440 on the multi-layer filter structure 450.

[0037] It should be noted that the second rotating shaft is based on the power generated after the hydraulic impeller 251 comes into contact with the water flow. One end of the shaft acts on the gear transmission structure 230 for driving, and the other end is connected to the multi-shaft centrifuge cylinder 410 to achieve rapid rotation. During the rotation, the heavy solid particles in the mud-water mixture are thrown to the cylinder wall and deposited and captured in the hemispherical pit array 413. The particles of different sizes are separated by the help of multi-segment annular baffles.

[0038] like Figures 1-8 As shown, the multi-layer filter structure 450 is a cylindrical structure, with the cylindrical wall comprising an inner layer 452, a middle layer 453, and an outer layer 454 from the inside out. The inner layer 452 is a support mesh with a pore size of 5 mm. The middle layer 453 is a layer of immobilized microbial particles, composed of nitrifying and denitrifying bacteria embedded in polyvinyl alcohol gel. The outer layer 454 is a fiber bundle packing layer used for filtration and attachment of aerobic bacteria. The outlet of the multi-layer filter structure 450 is connected to a bidirectional drainage channel 600, and the output end of the bidirectional drainage channel 600 is connected to a dual-path guide pipe 700. A pulse vibrator 500 is installed on the wall of the U-shaped pipe 400.

[0039] It should be noted that the multi-layer filter structure 450 can deeply filter the water after it has been agitated and broken up, achieving a deeper level of purification.

[0040] like Figures 1-8 As shown, the multi-shaft centrifuge cylinder 410 has multiple hemispherical pits 413 arranged in an array on its inner wall. A pulse sludge discharge valve 412 is installed at the bottom of the multi-shaft centrifuge cylinder 410. The bottom of the multi-shaft centrifuge cylinder 410 is connected to an outlet 414, which is connected to the inlet of the multi-layer filter structure 450 through a guide pipe 451. The bottom of the liquid tank 250 is connected to a liquid guide pipe 240. A rotating disk 241 is rotatably installed inside the liquid guide pipe 240, and the rotating disk 241 is connected to the second rotating shaft of the hydraulic impeller 251 through a connecting sleeve. The rotating disk 241 is installed inside the rotating sleeve 2410. The upper surface of the rotating disk 241 is provided with multiple radially arranged cutting teeth 2412 and radial guide grooves. The rotating cutting teeth 2412 simultaneously crush the sediment.

[0041] It should be noted that the high-speed rotation of the multi-shaft centrifuge cylinder 410 generates centrifugal force, and the heavy solid particles in the mud-water mixture are thrown to the cylinder wall and trapped and deposited in the hemispherical pit array 413, while the light clarified liquid gathers towards the center; the cylinder body 410 is equipped with annular baffles in multiple sections, which can classify and sort particles of different sizes and improve separation efficiency. The concentrated underflow sludge is discharged automatically by the bottom pulse sludge discharge valve 412 at timed intervals or by differential pressure, and the separated clarified liquid flows out through the bottom outlet 414 and is sent to the next treatment unit.

[0042] It should be further explained that the upper surface of the rotating disk 241 is provided with multiple radially arranged cutting teeth 2412, which can quickly crush the impurities it comes into contact with during rotation and avoid clogging.

[0043] Working principle:

[0044] This device is a green water treatment and recycling equipment that is driven by zero external energy, features multi-stage synergistic purification, and can achieve a closed-loop resource utilization of sludge. Its working process includes the following parts:

[0045] Compression treatment: Rainwater runoff from roadside green belts and curbs is collected by the water diversion substrate 100 and precisely introduced into the compression pretreatment component 220; the first compression plate 221 and the second compression plate 223 in the compression pretreatment component 220 perform periodic reciprocating compression motion under power drive, crushing and compressing large debris such as leaves, gravel, and plastic fragments in the rainwater, avoiding subsequent pipeline blockage, and the crushed slag-water mixture falls directly into the liquid tank 250 below.

[0046] Power transmission: The sludge-water mixture in the liquid tank 250 flows to the U-shaped pipe 400 under the guidance of the side guide plate. The water flow impacts and drives the hydraulic impeller 251 to rotate, which is the core power source of the entire device. The impeller drives the extrusion plate through the first transmission mechanism, and the extrusion frequency is automatically adjusted with the water flow rate. A large water flow rate results in frequent extrusion and high processing efficiency; a small water flow rate slows down the extrusion to avoid energy waste. Simultaneously, the device is equipped with a Venturi throat and an overflow port to prevent impeller blockage and overspeed damage, ensuring stable operation of the equipment.

[0047] Crushing and Sediment Transport: When the hydraulic impeller 251 rotates, it drives the rotating disk inside the liquid guide pipe 240 to rotate synchronously at high speed through the connecting sleeve. The cutting teeth on the rotating disk can perform secondary fine crushing of incompletely crushed flocs and mud clumps. The negative pressure generated by its radial guide channel can continuously draw the sediment at the bottom of the liquid tank to the subsequent treatment unit, preventing anaerobic decomposition of the sediment and ensuring uniform feeding.

[0048] Separation: The well-mixed mud-water mixture enters the multi-shaft centrifuge drum 410. The impeller drives the centrifuge drum to rotate at high speed through the second transmission mechanism, and the centrifugal force is used to achieve solid-liquid separation: the heavier mud and sand and organic fragments are thrown against the drum wall and captured, and are periodically discharged through the pulse mud discharge valve; the lighter clarified liquid flows to the central area and enters the next deep filtration stage.

[0049] Deep filtration: The clarified liquid enters the multi-layer filter 450 through the guide pipe. This filter has a coaxial sleeve structure and consists of three layers from the inside out: the inner layer is a large-pore support mesh, which provides support and water distribution; the middle layer is a layer of immobilized microbial particles, which can effectively remove ammonia nitrogen and total nitrogen from the water; and the outer layer is a fiber bundle packing layer, which traps impurities and further degrades organic matter. The water flows radially from the inside out, completing the deep purification. At the same time, the filter rotates slowly to prepare for subsequent cleaning.

[0050] Sewage Discharge and Cleaning: The scraper blades on the inner wall of the U-shaped pipe automatically clean the outer layer of the rotating filter, scraping off the aged biofilm and impurities, which then combine with the sludge separated by centrifugation. The purified water can be discharged into the municipal stormwater network or used for greening irrigation and road cleaning; the sludge can be composted with waste from green belts and returned to the soil, achieving a closed-loop resource utilization. In addition, the pulse vibrator can be started periodically to clean the filter and pipe walls, ensuring long-term efficient operation of the equipment.

[0051] The embodiments of the invention have been described in detail above with reference to the accompanying drawings. However, the invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the invention.

Claims

1. An integrated rainwater collection and treatment recycling device for road green belts, comprising a water intake base plate (100), a pressing mechanism (200), an installation component (300), and a U-shaped pipe (400), characterized in that: The water-diverting base plate (100) together with the support rod and the mounting component (300) form an overall frame support structure; The U-shaped pipe (400) is located at the lower part of the water intake plate (100) and is connected to the extrusion mechanism (200). The U-shaped pipe (400) is equipped with a liquid tank (250), a venturi throat (252), a multi-shaft centrifuge cylinder (410) and a hydraulic impeller (251). The extrusion mechanism (200) includes a first transmission mechanism (210), an extrusion pretreatment assembly (220), and a gear transmission structure (230). The top main shaft of the hydraulic impeller (251) is connected to the extrusion pretreatment assembly (220) through the first transmission mechanism (210) and the gear transmission structure (230), driving the two extrusion plates to perform reciprocating extrusion action; The other end of the main shaft of the hydraulic impeller (251) is connected to the multi-shaft centrifugal cylinder (410) via the second transmission mechanism (420) to drive the multi-shaft centrifugal cylinder (410) to rotate. The bottom of the U-shaped pipeline (400) is provided with a multi-layer filter structure (450).

2. The integrated rainwater collection and treatment recycling device for road green belts according to claim 1, characterized in that, The extrusion pretreatment assembly (220) includes a first extrusion plate (221), a second extrusion plate (223), an S-shaped guide groove (222), a push block (224), a sliding sleeve (225), and a compression spring (226). The first extrusion plate (221) and the second extrusion plate (223) are arranged opposite to each other in the sliding sleeve (225), and an S-shaped guide groove (222) is provided between the first extrusion plate (221) and the second extrusion plate (223). One end of the second extrusion plate (223) is connected to the gear transmission structure (230) through the push block (224) to push the second extrusion plate (223) back and forth; One end of the compression spring (226) is fixed to the side wall of the second extrusion plate (223), and the other end abuts against the outer wall of the first extrusion plate (221), forming an elastic structure in conjunction with the push block (224).

3. The integrated rainwater collection and treatment recycling device for road green belts according to claim 2, characterized in that, The gear transmission structure (230) includes a drive gear (231), a rack (232), a sliding pusher frame (233), and a first rotating shaft (234). The first rotating shaft (234) is located in the base (235) at the bottom of the water-drawing substrate (100), and the sliding pusher frame (233) is movably arranged inside the base (235). The rack (232) on the inner side of the sliding pusher frame (233) meshes with the drive gear (231) on the first rotating shaft (234). The other end of the first rotating shaft (234) is connected to the second rotating shaft inside the liquid tank (250) through the first transmission mechanism (210).

4. The integrated rainwater collection and treatment recycling device for road green belts according to claim 3, characterized in that, The first transmission mechanism (210) includes a first synchronous belt, the two ends of which are connected to a first synchronous pulley on the second rotating shaft and a second synchronous pulley on the first rotating shaft (234), respectively.

5. The integrated rainwater collection and treatment recycling device for road green belts according to claim 4, characterized in that, The upper end of the second rotating shaft is provided with a hydraulic impeller (251), and the lower end of the second rotating shaft is connected to the multi-shaft centrifuge (410) through the second transmission mechanism (420) to drive the multi-shaft centrifuge (410) to rotate; The bottom of the multi-shaft centrifuge (410) is connected to the multi-layer filter structure (450) via a third transmission mechanism (430).

6. The integrated rainwater collection and treatment recycling device for road green belts according to claim 5, characterized in that, The second transmission mechanism (420) is a speed-increasing unidirectional transmission device, which is used to speed up the power of the hydraulic impeller (251) and transmit it unidirectionally to the multi-shaft centrifuge (410) to realize the directional speed-up operation of the centrifuge. The third transmission mechanism (430) includes a second drive synchronous belt, the two ends of which are connected to the bottom of the multi-segment centrifuge cylinder (410) and the third rotating shaft (440) on the multi-layer filter structure (450), respectively.

7. The integrated rainwater collection and treatment recycling device for road green belts according to claim 6, characterized in that, The multi-layer filter structure (450) is a cylindrical structure, and the cylindrical wall includes an inner layer (452), a middle layer (453) and an outer layer (454) from the inside to the outside. The inner layer (452) is a support mesh with a pore size of 5 mm; The middle layer (453) is an immobilized microbial particle layer, which is composed of nitrifying bacteria and denitrifying bacteria embedded in polyvinyl alcohol gel; The outer layer (454) is a fiber bundle packing layer used for filtration and attachment of aerobic bacteria; The outlet of the multi-layer filter structure (450) is connected to a bidirectional liquid and sewage discharge channel (600), and the output end of the bidirectional liquid and sewage discharge channel (600) is connected to a dual guide pipe (700). A pulse vibrator (500) is installed on the wall of the U-shaped pipe (400).

8. The integrated rainwater collection and treatment recycling device for road green belts according to claim 1, characterized in that, It also includes a Venturi throat (252) located above the hydraulic impeller (251), which cooperates with the guide plate and is connected to the outlet of the guide plate through a circulation bypass.

9. The integrated rainwater collection and treatment recycling device for road green belts according to claim 1, characterized in that, The multi-shaft centrifuge tube (410) has multiple hemispherical pits (413) arranged in an array on its inner wall. The bottom end of the multi-shaft centrifuge tube (410) is equipped with a pulse sludge discharge valve (412). The bottom end of the multi-shaft centrifuge tube (410) is connected to an outlet (414), and the outlet (414) is connected to the inlet of the multi-layer filter structure (450) through a guide pipe (451).

10. The integrated rainwater collection and treatment recycling device for road green belts according to claim 1, characterized in that, The bottom end of the liquid tank (250) is connected to a liquid guide pipe (240), and a rotating disk (241) is rotatably arranged inside the liquid guide pipe (240). The rotating disk (241) is connected to the second rotating shaft of the hydraulic impeller (251) through a connecting sleeve. The rotating disk (241) is set inside the rotating sleeve (2410). The upper surface of the rotating disk (241) is provided with multiple radially arranged cutting teeth (2412) and radial guide grooves. The precipitate is simultaneously crushed by the rotating cutting teeth (2412).

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