Novel rainwater recycling device under viaduct

Abstract

The utility model relates to the technical field of rainwater collection and recycling, in particular to a novel rainwater recycling device under a viaduct, which comprises a rainwater collection and treatment device, a power and control device and an automatic irrigation system. In the early rainfall stage, rainwater on the surface of the viaduct is discharged to a municipal rainwater system under the viaduct through the grid, the vertical pipe, the discarding pipe and the overflow pipe by the downpipe; along with increase of the rainwater amount, after the flow discarding pipe is full of pipe flow, the flow discarding device is closed, rainwater enters the rainwater collecting bin after being filtered by the filter material layer on the outer wall of the vertical pipe, and after being settled in the bin, the rainwater is controlled by the power and control device and the automatic irrigation system to complete the irrigation task. According to the rainwater recycling device, rainwater resources are effectively utilized, the drainage pressure of a municipal rainwater system is relieved, poisonous and harmful substances discharged into viaduct bottom greening are reduced, and the rainwater recycling device has the advantages of being low in investment cost, high in automation degree, stable in operation, convenient to maintain, environmentally friendly, high in economical efficiency and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of rainwater collection and reuse, and is a novel rainwater recycling device suitable for rainwater collection and reuse on viaducts. Background Art

[0002] The existing urban roads have a large traffic volume, and the land resources on both sides of the roads are limited. In order to ease the traffic pressure, viaducts are widely used in urban roads. Green belts are generally set up under viaducts, which can not only wrap the bridge piers to ensure driving safety, but also improve the road landscape effect. However, the plants in the green belts under the viaducts need to be watered regularly because they cannot receive natural rainwater. The failure to fully utilize the rainwater on the bridge has caused a waste of natural resources; the rainwater on the bridge deck directly flows into the road drainage system, which increases the pressure on the municipal pipe network and does not conform to the sponge city design concept. Therefore, how to improve the rainwater utilization system of the viaduct deck so that it can provide sufficient and clean rainwater for irrigation is an urgent problem to be solved.

[0003] At present, the most common rainwater storage facilities on the market are water tanks or rain gardens set up under viaducts. The core of these facilities is to store and directly use rainwater without filtering it, which causes pollutants on the bridge surface to directly enter the plant root system with rainwater, which may cause poor plant growth or even death. Another approach is to set up buried civil engineering rainwater collection and reuse facilities under the viaduct. This approach achieves rainwater purification and reuse by setting up waste wells, overflow wells, sedimentation tanks, and reuse pump rooms. This type of system has relatively complete functions, but it has many structures and a large one-time investment. In addition, since the system is an integrated construction, the subsequent cleaning work is relatively cumbersome. At the same time, the reuse pump and flushing pump need to be manually opened, and the operation and maintenance are complicated. Summary of the invention

[0004] The purpose of the utility model is to provide a new type of rainwater recycling and utilization device under the viaduct, aiming to overcome the shortcomings of existing rainwater collection and utilization measures and devices, effectively utilize rainwater resources and alleviate the drainage pressure of the municipal rainwater system, reduce the discharge of toxic and harmful substances into the greening under the viaduct, and has the characteristics of low investment cost, high degree of automation, stable operation, convenient maintenance, high environmental protection and economy.

[0005] To this end, the utility model proposes a novel rainwater recycling device under an elevated bridge, including a rainwater collection and processing device, the rainwater collection and processing device including a water inlet riser, a grille and a permeable pipe; the water inlet riser is connected to the elevated drainage pipe, the grille is opposite to the top of the permeable pipe and forms a coarse slag storage area on one side thereof, and the upper side wall of the permeable pipe is provided with a plurality of permeable holes.

[0006] A laterally arranged waste flow pipe is connected to the lower side wall of the permeable pipe, a waste flow device is provided in the middle of the waste flow pipe, and the waste flow device includes a columnar container, a float and a stopcock; the float drives the stopcock to move up and down in the columnar container as the water level in the permeable pipe changes, controls the opening and closing of the waste flow pipe drain port, and achieves the purpose of discarding water through the waste flow pipe at the initial stage of rainfall, and storing water through a number of permeable holes and rainwater collection warehouses after the amount of rainwater increases.

[0007] As a preferred technical solution of the present application, the diameter of the abandoned flow pipe is smaller than that of the permeable pipe, and the slope of the abandoned flow pipe is opposite to the direction of the water flow.

[0008] As a preferred technical solution of the present application, an overflow pipe connected to the water-permeable pipe is also provided on the upper portion of the water-permeable pipe; the end of the waste flow pipe is connected to the overflow pipe.

[0009] As a preferred technical solution of the present application, a manual valve is connected to the bottom of the permeable pipe to form a fine slag storage area at the bottom of the permeable pipe; a drain pipe and a maintenance valve are arranged at the bottom of the rainwater collection bin.

[0010] As a preferred technical solution of the present application, a filter material layer is wrapped on the outside of the water permeable hole on the upper part of the water permeable pipe.

[0011] As a preferred technical solution of the present application, an inspection port is provided on the top of the rainwater collection bin; and a ventilation pipe is provided on the top of the rainwater collection bin.

[0012] As a preferred technical solution of the present application, it also includes a power and control device, which includes a solar panel, a booster pump and a PLC control device, and the booster pump is connected to the automatic irrigation system.

[0013] As a preferred technical solution of the present application, the solar panel is arranged outside the elevated fence; the solar panel is electrically connected to the booster pump and the PLC control device.

[0014] As a preferred technical solution of the present application, it also includes an automatic irrigation system, which includes a water supply network and a plurality of greening sprinkler devices.

[0015] As a preferred technical solution of the present application, the greening watering device includes an automatic watering device or a manual watering device, wherein the automatic watering device is one or more of low-pressure pipeline water supply, sprinkler irrigation, drip irrigation, and micro-irrigation.

[0016] The novel rainwater recycling device under the viaduct provided in this application has the following beneficial effects:

[0017] 1) The elevated rainwater enters the coarse slag storage area with a grille through the downpipe, and flows into the rainwater collection and treatment device after preliminary filtration by the grille, reducing the content of large particle impurities in the rainwater and ensuring the long-term and stable operation of the rainwater recycling device; 2) The filtration device in the rainwater collection pool determines the setting height of the filtration device, the opening rate of the permeable pipe and the filter material grading of the filter material layer according to the rainwater flow rate, reducing the content of toxic and harmful substances in the rainwater in the collection bin and improving the water quality of the irrigation rainwater; 3) The automatic abandonment device achieves the initial abandonment of rainwater by adjusting the diameter of the abandonment pipe and the permeable pipe and configuring the automatic abandonment control valve, improving the water quality of the collected rainwater and the soil environment for watering vegetation. 4) The solar panel and battery in the power and control device are used to power the booster pump, and the booster pump is controlled by the PLC control box to start and stop, and the surrounding greening is regularly irrigated without manual operation, with a high degree of automation and simple equipment maintenance. 5) The main body is set above the ground, and the main project construction requires almost no excavation, which is conducive to saving investment and ensuring the safety of the elevated structure. 6) The device is powered by solar energy, no additional electricity is required, and it is energy-saving and environmentally friendly. 7) The power and irrigation parts of the device are automatically controlled, which reduces the labor intensity and professional level requirements of maintenance personnel and has low operating costs.

[0018] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting part of the present application are used to provide a further understanding of the present application. The exemplary embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0020] Figure 1 This is a schematic diagram of the structure of a novel rainwater recycling device under an elevated bridge of the utility model;

[0021] Description of Reference Numerals

[0022] 1. Water inlet riser; 2. Screen; 3. Coarse slag storage area; 4. Permeable pipe; 5. Filter material layer; 6. Discard pipe; 7. Discard device; 8. Overflow pipe; 9. Fine slag storage area; 10. Rainwater collection bin; 11. Booster pump; 12. PLC control device; 13. Solar panel; 14. Inspection port; 15. Ventilation pipe; 16. Water supply network; 17. Greening sprinkler device 1; 18. Greening sprinkler device 2; 19. Drain pipe. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] As attached Figure 1 As shown, a new rainwater recycling device under an elevated bridge comprises a rainwater collection and processing device (1-10, 14, 15, 19), a power and control device (11, 12), and an automatic irrigation system (16-18). The rainwater collection and processing device is arranged under the elevated bridge and above the ground. At the beginning of rainfall, rainwater on the elevated bridge deck is discharged from the downpipe through the grille 2, the permeable pipe 4, the waste pipe 6, and the overflow pipe 8 to the municipal rainwater system under the elevated bridge; as the amount of rainwater increases, the waste pipe is full, the waste device 7 is closed, and the rainwater is filtered through the filter material layer on the outer wall of the riser and enters the rainwater collection bin 10. After sedimentation in the bin, the rainwater is controlled by the power and control device (11, 12) and the automatic irrigation system (16-18) to complete the task of irrigating the greening under the elevated bridge.

[0025] The top water inlet system of the rainwater collection and treatment device comprises a water inlet system (1-3), a filtering device (4, 5, 9), an automatic flow abandonment device (6-7), an overflow pipe 8, and a rainwater collection bin 10; the water inlet system comprises a water inlet riser 1, a grille 2, and a coarse residue storage area 3. The water inlet riser 1 is connected to an elevated drainage pipe, the inlet of the filtering device is partially enlarged and a grille 2 is provided, larger impurities are intercepted in the coarse residue storage area 3, and primary filtered water enters the filtering device. The size and number of the grilles 2 vary with the diameter and number of the water inlet pipe and the size of the collection and treatment device.

[0026] The filtering device includes a vertically arranged permeable pipe 4 and a filter material layer 5. The top of the permeable pipe 4 is opposite to the grille 2. The upper side wall of the permeable pipe 4 is provided with a permeable hole. The filter material layer 5 is wrapped around the outside of the permeable hole. The upper side wall of the permeable pipe 4 is also provided with an overflow pipe 8 connected thereto. When the rainwater collected in the rainwater collection bin 10 is close to full, it is discharged to the sewer through the overflow pipe 8; the lower side wall of the permeable pipe 4 is connected to a transversely arranged waste flow pipe 6, and a waste flow device 7 is provided in the middle of the waste flow pipe 6. The bottom of the permeable pipe 4 is connected to a manual valve to form a fine slag storage area 9 at the bottom of the permeable pipe 4, and the manual valve is opened regularly to release the fine slag.

[0027] The filter material layer 5 is composed of crushed stone, ceramsite, etc., and the filter material gradation, thickness and other parameters are determined according to the filtration flow rate. The end of the waste pipe 6 is connected to the overflow pipe 8, which can not only reduce the length of the water pipe and reduce the cost, but also reduce the number of drainage outlets, making it convenient to connect to the municipal drainage system.

[0028] Specifically, according to the characteristics of poor water quality and small amount of initial rainwater, a flow abandonment device 7 is set, and the flow abandonment device 7 has a columnar container, a float and a plug; the opening and closing of the drain port is controlled by the float, the plug and the columnar container. When the water level in the water-permeable pipe 4 does not reach the set water level, the flow abandonment device 7 is in an open state under the gravity of the plug; as the rainfall intensity increases, when the water level in the water-permeable pipe 4 reaches the set water level, the flow abandonment device 7 is turned to a closed state under the buoyancy of the float. The initial rainwater is abandoned to the municipal drainage network. When the amount of collected rainwater is large, the float floats up with the help of buoyancy and the plug closes the drain port due to continuous water pressure. The rainwater is collected in the rainwater collection bin 10 through the filter material layer 5.

[0029] Among them, the diameter of the abandoned flow pipe 6 is smaller than that of the permeable pipe 4, and the diameter ratio is determined according to the thickness of the abandoned flow. The slope of the abandoned flow pipe 6 is opposite to the direction of the water flow. As the rainfall increases, the abandoned flow pipe 6 changes from a non-full flow to a full flow, and at the same time, the water level in the permeable pipe 4 rises, driving the float in the abandoned flow device 7 to rise, closing the water hole in the abandoned flow device 7, and achieving the effect of closing the abandoned flow pipe.

[0030] A maintenance port 14 is provided on the top of the rainwater collection bin 10 to facilitate the maintenance of the equipment by the staff at a later stage; two ventilation pipes 15 with a height difference of more than 300 mm are provided on the top of the rainwater collection bin 10 to maintain the air circulation inside the rainwater collection bin 10, to remove toxic and harmful gases in time, and to extend the service life of the equipment; a drain pipe 19 and a maintenance valve are provided at the bottom of the rainwater collection bin 10 to effectively drain the rainwater and precipitated impurities in the bin, so that maintenance personnel can enter the bin to maintain the device conveniently.

[0031] The power and control device includes a solar panel 13, a booster pump 11 and a PLC control device 12. The solar panel 13 is arranged outside the elevated fence. The solar panel 13 generates electricity through light energy and stores it in a battery to power the booster pump 11 and the PLC control device 12. The booster pump 11 is controlled to start and stop so that it can regularly supply water to the automatic irrigation system, thereby realizing the function of automatic irrigation of surrounding greenery, making full use of rainwater resources and effectively alleviating the drainage pressure of the municipal rainwater pipe network.

[0032] The automatic irrigation system includes a water supply network 16 and a number of greening watering devices; the water supply network 16 is reasonably designed according to factors such as the greening distribution and vegetation types under the viaduct; the greening watering device includes an automatic watering device or a manual watering device, wherein the automatic watering device is one or more of low-pressure pipeline water delivery, sprinkler irrigation, drip irrigation, and micro-irrigation; the specific greening watering device includes a greening watering device 17 and a greening watering device 2 18, which represent automatic watering devices and manual watering devices respectively. Different greening watering devices are selected according to actual needs to give full play to their economic and intelligent characteristics. The dynamic irrigation system includes but is not limited to sprinkler irrigation, micro-irrigation and other irrigation systems that can realize automatic control.

[0033] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A new rainwater recycling device under a viaduct, characterized in that: The invention comprises a rainwater collection and treatment device, wherein the rainwater collection and treatment device comprises a water inlet riser (1), a grille (2) and a water permeable pipe (4); the water inlet riser (1) is connected to an elevated drainage pipe, the grille (2) is opposite to the top of the water permeable pipe (4) and forms a coarse slag storage area (3) on one side thereof, and the upper side wall of the water permeable pipe (4) is provided with a plurality of water permeable holes. A horizontally disposed waste flow pipe (6) is connected to the lower side wall of the permeable pipe (4), a waste flow device (7) is provided in the middle of the waste flow pipe (6), and the waste flow device (7) comprises a columnar container, a float and a stopcock; the float drives the stopcock to move up and down in the columnar container as the water level and water pressure in the permeable pipe (4) change, thereby controlling the opening and closing of the drain port of the waste flow pipe (6), thereby achieving the purpose of waste flow through the waste flow pipe (6) at the initial stage of rainfall, and storing water through a plurality of permeable holes and a rainwater collection bin (10) after the amount of rainwater increases.

2. The novel rainwater recycling device under the viaduct according to claim 1 is characterized in that: The diameter of the discarded flow pipe (6) is smaller than that of the permeable pipe (4), and the slope of the discarded flow pipe (6) is opposite to the direction of the water flow.

3. The novel rainwater recycling device under the viaduct according to claim 1 is characterized in that: An overflow pipe (8) in communication with the water permeable pipe (4) is also provided at the upper portion thereof; the end of the waste flow pipe (6) is connected to the overflow pipe (8).

4. The novel rainwater recycling device under the viaduct according to claim 1 is characterized in that: The bottom of the water permeable pipe (4) is connected with a manual valve, so that a fine slag storage area (9) is formed at the bottom of the water permeable pipe (4); and a drain pipe (19) and a maintenance valve are arranged at the bottom of the rainwater collection bin (10).

5. The novel rainwater recycling device under the viaduct according to claim 1 is characterized in that: The outer side of the water permeable hole in the upper part of the water permeable pipe (4) is wrapped with a filter material layer (5).

6. The novel rainwater recycling device under the viaduct according to claim 1 is characterized in that: An inspection port (14) is provided on the top of the rainwater collection bin (10); and a vent pipe (15) is provided on the top of the rainwater collection bin (10).

7. The novel rainwater recycling device under the viaduct according to claim 1 is characterized in that: It also includes a power and control device, which includes a solar panel (13), a booster pump (11) and a PLC control device (12), and the booster pump (11) is connected to the automatic irrigation system.

8. The novel rainwater recycling device under the viaduct according to claim 7 is characterized in that: The solar cell panel (13) is arranged outside the elevated fence; the solar cell panel (13) is electrically connected to the booster pump (11) and the PLC control device (12).

9. The novel rainwater recycling device under the viaduct according to claim 1 is characterized in that: It also includes an automatic irrigation system, which includes a water supply network (16) and a plurality of greening watering devices.

10. The novel rainwater recycling device under the viaduct according to claim 9 is characterized in that: The greening watering device comprises an automatic watering device or a manual watering device, wherein the automatic watering device is one or more of low-pressure pipeline water delivery, sprinkler irrigation, drip irrigation, and micro-irrigation.

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