CN213756095U

CN213756095U - A rainwater collection irrigation equipment for greenbelt under overpass

Info

Publication number: CN213756095U
Application number: CN202022991036.4U
Authority: CN
Inventors: 储友海
Original assignee: Anhui Zhonghuan Ecological Garden Co ltd
Current assignee: Anhui Zhonghuan Ecological Garden Group Co ltd
Priority date: 2020-12-10
Filing date: 2020-12-10
Publication date: 2021-07-23
Anticipated expiration: 2030-12-10

Abstract

The utility model relates to an irrigation equipment is collected to rainwater that is used for greenbelt under overpass, it includes storage water tank, collector pipe, reposition of redundant personnel case and reposition of redundant personnel subassembly, is equipped with initial water row mouth on the reposition of redundant personnel case lateral wall, and the bottom is equipped with the mouth that catchments, and the reposition of redundant personnel subassembly is including sliding the electric putter of locating fixed connection's the post that slides and being connected with the post that slides on shielding plate, the shielding plate in the reposition of redundant personnel case, offer on the inside wall of reposition of redundant personnel case with the post that slides complex spout. In the early stage of raining, the electric push rod is started to enable the sliding column to move downwards, the higher end of the shielding plate slides downwards along the inner side wall of the flow dividing box, the lower end of the shielding plate slides horizontally along the inner bottom surface of the flow dividing box, the initial water drainage port is opened, the water collection port is blocked, and the initial water is drained into the urban sewage treatment system; in the later stage of raining, the electric push rod is started to discharge water with the plugging initial stage, the water collecting opening is opened, rainwater is discharged into the water storage tank, a filter is not required to be specially arranged, the rainwater collecting and irrigating cost is reduced, and the quality of the irrigated rainwater is ensured.

Description

A rainwater collection irrigation equipment for greenbelt under overpass

Technical Field

The application relates to the technical field of rainwater collection and irrigation, in particular to a rainwater collection and irrigation device for a green belt under a viaduct.

Background

With the development of urban construction, more and more viaducts are arranged in cities. Greenbelts are generally arranged below the viaducts, and plants on the greenbelts cannot be directly watered due to blocking of bridge floors. The manual irrigation of the plants not only needs to consume a large amount of fresh water resources, but also wastes time and labor.

At present, the utility model discloses a chinese utility model patent of No. CN206570866U discloses an irrigation equipment is collected to rainwater that is used for greenbelt under overpass, is provided with the outlet on the overpass, installs the storage water tank on the pier, and the outlet passes through rainwater collection water piping connection with the storage water tank, installs the filter on the collection water pipe, sets up a plurality of water pipes in the greenbelt, and water pipe and storage water tank connection position are equipped with the valve, install the shower nozzle on the water pipe. Utilize rainwater collection water pipe to collect the water storage tank with comparatively clean water automatic collection after the filter filters in, when opening the valve, the rainwater in the water storage tank can be through conduit and shower nozzle to the greenbelt irrigate. However, because the automobile on the viaduct discharges a large amount of pollutants, the concentration of the pollutants in the rainwater at the early stage of precipitation is high, and the concentration of the pollutants in the rainwater is gradually reduced along with the continuous scouring of the precipitation, so that the rainwater can be used for irrigation of green belts. And above-mentioned scheme is collected initial stage rainwater and later stage rainwater in the lump, has increased the processing load of filter, makes the rainwater collect the cost-push of irrigating, and is difficult to guarantee the quality of water of irrigating.

In view of the above-mentioned related art, the inventor believes that there are disadvantages that the cost of rainwater collection irrigation is high and it is difficult to ensure the quality of irrigation water.

SUMMERY OF THE UTILITY MODEL

In order to reduce the rainwater and collect the cost of irrigating and ensure the quality of water of irrigating the rainwater, this application provides a rainwater collection irrigation equipment that is used for greenbelt under overpass.

The application provides a rainwater collection irrigation equipment for greenbelt under overpass adopts following technical scheme:

a rainwater collecting and irrigating device for greenbelts under viaducts comprises a water storage tank, wherein a water collecting pipe and an irrigation water pipe which are communicated with the interior of the water storage tank are installed on the water storage tank, a flow distribution box is arranged between the water storage tank and the water collecting pipe, an initial water discharge opening is formed in the side wall of the flow distribution box, an initial rainwater pipe connected into a municipal sewage treatment system is installed on the side wall of the flow distribution box, a water collecting opening communicated with the interior of the water storage tank is formed in the bottom of the flow distribution box, a flow distribution assembly used for switching the opening and closing state of the initial water discharge opening and the water collecting opening is arranged in the flow distribution box, the flow distribution assembly comprises a shielding plate arranged in the flow distribution box in a sliding mode, a sliding column fixedly connected with the shielding plate and an electric push rod used for pushing the sliding column, the shielding plate is obliquely arranged in the flow distribution box and attached to the inner wall of the flow distribution box, and a sliding groove is formed in the inner side wall of the flow distribution box, the sliding column is matched with the sliding groove in a sliding mode.

By adopting the technical scheme, in the early stage of rain, the electric push rod is started, the electric push rod pulls the sliding column to move downwards in the sliding groove, the sliding column drives the higher end of the shielding plate to slide downwards along the inner side wall of the flow distribution box, the sliding groove enables the lower end of the shielding plate to horizontally slide along the inner bottom surface of the flow distribution box through the limiting effect on the sliding column, so that the shielding plate rotates in the flow distribution box until the higher end of the shielding plate rotates to the lower side of the initial water discharge port, the shielding plate shields the water collection port, the initial water discharge port is opened at the moment, the water collection port is closed, and the initial water in the flow distribution box can be discharged into a municipal sewage treatment system through the initial water discharge port and the initial rainwater pipe for treatment; the rainy later stage, start electric putter, make it upwards promote the slip post, the post that slides drives the shielding plate and carries out reverse ground in the reposition of redundant personnel incasement and rotate, until the shielding plate shelters from initial stage water drainage mouth, initial stage water drainage mouth closes this moment, the mouth that catchments is opened, rainwater in the reposition of redundant personnel incasement can discharge into the storage water tank through the mouth that catchments, use in order to supply the greenbelt irrigation, reposition of redundant personnel case and reposition of redundant personnel subassembly are with initial stage rainwater separately, and handle or retrieve respectively, need not to set up the filter specially, the cost of irrigation is collected to the rainwater has been reduced, and the quality of water of irrigation rainwater has been ensured.

Optionally, a sliding block is arranged in the sliding groove in a sliding mode, the sliding block is fixedly connected with a telescopic rod of the electric push rod, a rotating groove is formed in the side wall of the sliding block, and the sliding column is rotatably arranged in the rotating groove.

Through adopting above-mentioned technical scheme, because slip post and shielding plate fixed connection, at the in-process that the post reciprocated that slides, the post that slides rotates along with the shielding plate, electric putter passes through the slider and is connected with the post that slides, when electric putter promotes the slip post, the relative rotation takes place for slip post and slider to this has ensured electric putter's push-and-pull effect.

Optionally, a blocking piece and a spring are arranged in the sliding groove, the blocking piece is slidably arranged in the sliding groove and attached to the inner wall of the sliding groove, one end of the blocking piece is tightly abutted to the spring, and the other end of the blocking piece is tightly abutted to the sliding block.

Through adopting above-mentioned technical scheme, when the slider slided in the spout, the exposed part that the granular impurity that carries easily got into the spout in the rainwater caused the jam, and the spring action of spring will shelter from the piece and pop out and support tightly with the slider this moment to shelter from the exposed part of spout, hinder granular impurity and water and get into the spout, ensured the sliding effect of slider and sliding post, and then ensured the rotation effect of shielding plate.

Optionally, the side walls around the shielding plate are fixedly connected with sealing strips made of elastic materials, and the sealing strips are attached to the inner wall of the flow dividing box.

Through adopting above-mentioned technical scheme, when the shielding plate when the reposition of redundant personnel incasement rotation, elastic deformation takes place for the sealing strip to remain throughout with the state of reposition of redundant personnel incasement wall laminating, hinder water and flow through between the inner wall of shielding plate and reposition of redundant personnel case with this, improve the leakproofness of shielding plate and reposition of redundant personnel case hookup location with this, thereby improved the reposition of redundant personnel subassembly to the reposition of redundant personnel effect of initial stage rainwater and later stage rainwater.

Optionally, the irrigation water pipe is arranged at the bottom of the water storage tank, and is provided with a water outlet valve and a plurality of spray heads, and the water outlet valve is arranged at one end of the irrigation water pipe close to the water storage tank; the upper portion of storage water tank is seted up the overflow mouth and is installed the flood irrigation pipe, the one end of flood irrigation pipe with the overflow mouth intercommunication, the other end extends to in the greenbelt, just set up a plurality of flood irrigation holes on the flood irrigation pipe.

By adopting the technical scheme, in arid weather, the water outlet valve is opened, the stored water in the water storage tank flows into the irrigation water pipe and is sprayed out by the spray head under the action of water pressure, and the green belt can be irrigated; if the rainfall is large, when the liquid level of water stored in the water storage tank reaches the position of the overflow port, rainwater is discharged to a green belt through the overflow port and the flood irrigation pipe and flood irrigation is carried out through the flood irrigation holes, so that the rainwater can be uniformly distributed and dispersed around, and rainwater accumulation nearby the water storage tank is prevented.

Optionally, the bottom of the water storage tank is provided with a water outlet communicated with the irrigation water pipe, and a filter screen used for shielding the water outlet and the overflow port is arranged in the water storage tank.

Through adopting above-mentioned technical scheme, the filter screen filters the graininess impurity that gets into the storage water tank, and the filter screen that shelters from the delivery port has hindered graininess impurity to get into irrigation pipe and has caused the shower nozzle to block up, and the filter screen that shelters from the overflow mouth has hindered graininess impurity to get into the pipe of infiltrating irrigation and has caused the hole of infiltrating irrigation to block up.

Optionally, the interior bottom surface of storage water tank sinks to the center with the slope by all around and forms the minimum, the mud pipe that is located the minimum is installed to the bottom of storage water tank, just install the mud valve on the mud pipe.

Through adopting above-mentioned technical scheme, the rainwater gets into the storage water tank after, wherein particulate matters such as silt particle that smugglies secretly take place to deposit to pile up in the lower along the interior bottom surface of storage water tank slope form, open the mud valve, the silt particle of sediment can be discharged through the mud pipe, realizes the blowdown work of storage water tank, simple structure, convenient operation.

Optionally, the lower part of the water storage tank is provided with an observation window made of transparent glass.

Through adopting above-mentioned technical scheme, staff's accessible observation window knows the sediment condition of silt particle in the storage water tank, and the staff of being convenient for judges whether need carry out blowdown work.

In summary, the present application includes at least one of the following beneficial technical effects:

1. in the early stage of rain, the electric push rod is started to pull the sliding column to move downwards, so that the higher end of the shielding plate is driven to slide downwards along the inner side wall of the flow dividing box, the lower end of the shielding plate horizontally slides along the inner bottom surface of the flow dividing box until the initial water discharge port is opened, the water collecting port is closed at the moment, and the initial water is discharged into the urban sewage treatment system; in the later stage of raining, the electric push rod is started to plug the initial water discharge opening, the water collection opening is opened at the moment, rainwater is discharged into the water storage tank through the water collection opening to be used for green belt irrigation, a filter does not need to be specially arranged, the cost of rainwater collection and irrigation is reduced, and the water quality of the irrigation rainwater is ensured;

2. the movable push rod is connected with the sliding column through the sliding block, and the sliding column and the sliding block rotate relatively while the electric push rod pushes the sliding column, so that the push-pull effect of the electric push rod is ensured;

3. when the sliding block slides in the sliding groove, the blocking block is ejected out to be tightly abutted to the sliding block under the elastic action of the spring, so that the exposed part of the sliding groove is blocked, granular impurities are blocked from entering the sliding groove, and the sliding effect of the sliding block and the sliding column is ensured.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present application.

Fig. 2 is a schematic view of the internal structure of the flow distribution box according to the embodiment of the present application.

Fig. 3 is a partially enlarged schematic view of a portion a in fig. 1.

Description of reference numerals: 1. a water storage tank; 11. a water collection pipe; 12. a water outlet; 13. an overflow port; 14. a filter screen; 15. a sludge discharge pipe; 151. a mud valve; 16. an observation window; 2. a shunt box; 21. an initial water discharge port; 211. an initial rainwater pipe; 22. a water collection port; 23. a chute; 231. a horizontal groove; 232. a vertical groove; 24. a stop block is shielded; 25. a spring; 3. a flow diversion assembly; 31. a shielding plate; 311. a sealing strip; 32. sliding the column; 33. a slider; 331. a rotating groove; 34. an electric push rod; 4. an irrigation water pipe; 41. a water outlet valve; 42. a spray head; 5. a flood irrigation pipe; 51. and (5) flooding the hole.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses an irrigation equipment is collected to rainwater that is used for greenbelt under overpass. Referring to fig. 1, the rainwater collecting and irrigating device for the green belt under the viaduct comprises a water storage tank 1, a diversion box 2, a diversion assembly 3, an irrigation water pipe 4 and an overflow irrigation pipe 5. Storage water tank 1 and flow divider 2 are the cuboid form, and flow divider 2's volume is less than storage water tank 1's volume, and flow divider 2 fixed mounting is on storage water tank 1's top surface.

Referring to fig. 1, a water collecting pipe 11 is installed on the top surface of the diversion box 2, one end of the water collecting pipe 11 is communicated with the inside of the diversion box 2, the other end of the water collecting pipe 11 is communicated with the bridge deck of the viaduct, and rainwater on the bridge deck of the viaduct flows into the diversion box 2 through the water collecting pipe 11. As shown in fig. 2, an initial water discharge port 21 is formed in a side wall of the flow dividing box 2, and an opening of the initial water discharge port 21 is circular. The side wall of the flow dividing box 2 provided with the initial water discharge port 21 is provided with an initial rainwater pipe 211, one end of the initial rainwater pipe 211 is communicated with the initial water discharge port 21, and the other end is connected into the municipal sewage treatment system. The bottom surface of the flow dividing box 2 is provided with a water collecting opening 22, and the water collecting opening 22 is communicated with the inside of the water storage tank 1.

Referring to fig. 3, the flow dividing assembly 3 is disposed in the flow dividing box 2, and the flow dividing assembly 3 includes a shielding plate 31, a sliding column 32, a sliding block 33, and an electric push rod 34. The shielding plate 31 is a rectangular plate, is obliquely disposed in the flow distribution box 2, and is slidably fitted to the flow distribution box 2. The side walls of the periphery of the shielding plate 31 are fixedly connected with sealing strips 311, the cross sections of the sealing strips 311 arranged on the end surface of the shielding plate 31 are semicircular, and the cross sections of the sealing strips 311 arranged on the two sides of the shielding plate 31 are semi-rectangular. The sealing strips 311 are made of rubber, the rubber has good elasticity, and the end surfaces of the shielding plates 31 and the outer side walls of the sealing strips 311 on the two sides are attached to the inner wall of the flow dividing box 2, so that the shielding plates 31 and the flow dividing box 2 have good sealing performance.

Referring to fig. 3, the sliding column 32 has a circular cross section and is fixedly connected to the shielding plate 31. The inner side walls of the shunt box 2 at two sides of the shielding plate 31 are provided with sliding grooves 23, and openings of the sliding grooves 23 are rectangular. The chute 23 includes a horizontal groove 231 and a vertical groove 232, the horizontal groove 231 is disposed near the water collection opening 22, and the vertical groove 232 is disposed near the initial water discharge opening 21. The slider 33 is a rectangular block, and is slidably disposed in the slide groove 23. The side wall of the sliding block 33 close to the shielding plate 31 is provided with a rotating groove 331, the opening of the rotating groove 331 is circular, and the sliding column 32 is rotatably arranged in the rotating groove 331. The electric push rod 34 is fixedly arranged in the flow dividing box 2, and the telescopic rod of the electric push rod is fixedly connected with the bottom surface of the sliding block 33 arranged in the vertical groove 232. In the initial stage of rain, the electric push rod 34 is started to pull the slide block 33 to slide downwards, the slide block 33 drives the higher end of the shielding plate 31 to slide downwards along the inner side wall of the flow dividing box 2 through the sliding column 32, the limiting effect of the horizontal groove 231 enables the lower end of the shielding plate 31 to slide horizontally along the inner bottom surface of the flow dividing box 2 until the higher end of the shielding plate 31 is positioned at the lower side of the initial water discharge port 21, at the moment, the shielding plate 31 shields the water collecting port 22, the initial water discharge port 21 is opened, the water collecting port 22 is closed, and the initial water can be discharged into the urban sewage treatment system for treatment; in the later stage of raining, start electric putter 34 and make its upwards promote sliding column 32, shelter from initial stage water row mouth 21 to shielding plate 31, the mouth 22 that catchments is opened, and the rainwater can be discharged into storage water tank 1 through the mouth 22 that catchments and use in order to supply the greenbelt irrigation, realizes the separate processing or the recovery of initial stage rainwater and later stage rainwater, need not to set up the filter specially, has reduced the rainwater and has collected the cost of irrigating to the quality of water of irrigation rainwater has been ensured.

Referring to fig. 3, a stopper 24 and a spring 25 are disposed in the sliding groove 23, and the stopper 24 is a rectangular block, is slidably disposed in the sliding groove 23, and is attached to an inner wall of the sliding groove 23. The spring 25 blocks one end of the block 24 far away from the slide block 33, one end of the block 24 is tightly pressed against the spring 25, and the other end is tightly pressed against the slide block 33. When the sliding block 33 slides in the sliding groove 23, the blocking block 24 is ejected by the elastic force of the spring 25 to abut against the sliding block 33, so that the exposed part of the sliding groove 23 is blocked, water and granular impurities are blocked from entering the sliding groove 23, and the sliding effect of the sliding block 33 and the sliding column 32 is ensured.

Referring to fig. 1, a water outlet 12 is formed on the side wall of the bottom of the water storage tank 1, and an opening of the water outlet 12 is circular. The irrigation water pipe 4 is arranged on the side wall of the water storage tank 1 provided with the water outlet 12, one end of the irrigation water pipe 4 is communicated with the water outlet 12, and a water outlet valve 41 is arranged; the other end extends into the green belt and is provided with a plurality of spray heads 42. In drought weather, the water outlet valve 41 is opened, the water stored in the water storage tank 1 flows into the irrigation water pipe 4 and is sprayed out by the spray head 42 under the action of water pressure, and the green belt can be irrigated. An overflow port 13 is arranged on the side wall of the upper part of the water storage tank 1, and the opening of the overflow port 13 is circular. The flood irrigation pipe 5 is arranged on the side wall of the water storage tank 1 provided with the overflow port 13, one end of the flood irrigation pipe 5 is communicated with the overflow port 13, the other end of the flood irrigation pipe 5 extends into the green belt, and the flood irrigation pipe 5 is provided with a plurality of flood irrigation holes 51. If the rainfall is large, when the water stored in the water storage tank 1 reaches the overflow port 13, the rainwater is discharged to a green belt through the flood irrigation pipe 5 and flood irrigation is carried out through the flood irrigation holes 51, so that the rainwater is uniformly distributed around, and the rainwater is prevented from being accumulated near the water storage tank 1. A filter screen 14 for shielding the water outlet 12 and the overflow port 13 is arranged in the water storage tank 1, the filter screen 14 for shielding the water outlet 12 prevents granular impurities from entering the irrigation water pipe 4 to cause blockage of the spray head 42, and the filter screen 14 for shielding the overflow port 13 prevents granular impurities from entering the flood irrigation pipe 5 to cause blockage of the flood irrigation hole 51.

Referring to fig. 1, a sludge discharge pipe 15 is installed at the bottom of the water storage tank 1, and the cross section of the sludge discharge pipe 15 is circular. The inner bottom surface of the water storage tank 1 sinks towards the center from the periphery by a slope, and the lowest part is formed, and particles such as mud and sand carried in rainwater in the water storage tank 1 are precipitated and accumulated at the lowest part along the inner bottom surface of the water storage tank 1. The mud pipe 15 is located the lowest of bottom surface in the storage water tank 1 to install mud valve 151, open mud valve 151, the silt particle of sediment can be discharged through mud pipe 15, in order to carry out the blowdown to storage water tank 1. The lower part of storage water tank 1 is equipped with observation window 16, and observation window 16 is the rectangle, and it is made by transparent glass, and the staff knows the sediment condition of silt particle in storage water tank 1 through observation window 16 to judge whether need carry out blowdown work.

The embodiment of the application provides an implementation principle for rainwater collection irrigation equipment of greenbelt under viaduct is: in the initial stage of rain, the electric push rod 34 is started to pull the slide block 33 to slide downwards, the slide block 33 drives the higher end of the shielding plate 31 to slide downwards along the inner side wall of the flow dividing box 2 through the sliding column 32, the limiting effect of the horizontal groove 231 enables the lower end of the shielding plate 31 to slide horizontally along the inner bottom surface of the flow dividing box 2 until the higher end of the shielding plate 31 is positioned at the lower side of the initial water discharge port 21, at the moment, the shielding plate 31 shields the water collecting port 22, the initial water discharge port 21 is opened, the water collecting port 22 is closed, and the initial water can be discharged into the urban sewage treatment system for treatment; in the later stage of raining, start electric putter 34 and make its upwards promote sliding column 32, shelter from initial stage water row mouth 21 to shielding plate 31, the mouth 22 that catchments is opened, and the rainwater can be discharged into storage water tank 1 through the mouth 22 that catchments and use in order to supply the greenbelt irrigation, realizes the separate processing or the recovery of initial stage rainwater and later stage rainwater, need not to set up the filter specially, has reduced the rainwater and has collected the cost of irrigating to the quality of water of irrigation rainwater has been ensured.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an irrigation equipment is collected to rainwater for greenbelt under overpass, includes storage water tank (1), install on storage water tank (1) collector pipe (11) and irrigation water pipe (4) rather than inside intercommunication, its characterized in that: the water storage tank is characterized in that a flow dividing box (2) is arranged between the water storage tank (1) and the water collecting pipe (11), an initial water discharge opening (21) is formed in the side wall of the flow dividing box (2) and an initial rainwater pipe (211) connected into a municipal sewage treatment system is installed on the side wall of the flow dividing box, a water collecting opening (22) communicated with the inside of the water storage tank (1) is formed in the bottom of the flow dividing box (2), a flow dividing assembly (3) used for switching the opening and closing states of the initial water discharge opening (21) and the water collecting opening (22) is arranged in the flow dividing box (2), the flow dividing assembly (3) comprises a shielding plate (31) arranged in the flow dividing box (2) in a sliding mode, a sliding column (32) fixedly connected with the shielding plate (31) and an electric push rod (34) used for pushing the sliding column (32), and the shielding plate (31) is obliquely arranged in the flow dividing box (2), and with the inner wall laminating of reposition of redundant personnel case (2), spout (23) have been seted up on the inside wall of reposition of redundant personnel case (2), slip post (32) slide with spout (23) sliding fit.

2. The rainwater collection irrigation device for the green belt under the viaduct as claimed in claim 1, wherein: the sliding device is characterized in that a sliding block (33) is arranged in the sliding groove (23) in a sliding mode, the sliding block (33) is fixedly connected with a telescopic rod of the electric push rod (34), a rotating groove (331) is formed in the side wall of the sliding block (33), and the sliding column (32) is rotatably arranged in the rotating groove (331).

3. The rainwater collection irrigation device for the green belt under the viaduct as claimed in claim 2, wherein: a blocking piece (24) and a spring (25) are arranged in the sliding groove (23), the blocking piece (24) is arranged in the sliding groove (23) in a sliding mode and attached to the inner wall of the sliding groove (23), one end of the blocking piece (24) is tightly abutted to the spring (25), and the other end of the blocking piece (24) is tightly abutted to the sliding block (33).

4. The rainwater collection irrigation device for the green belt under the viaduct as claimed in claim 1, wherein: all fixedly connected with sealing strip (311) that elastic material made on the lateral wall all around of shielding plate (31), sealing strip (311) with the inner wall laminating of flow divider box (2).

5. The rainwater collection irrigation device for the green belt under the viaduct as claimed in claim 1, wherein: the irrigation water pipe (4) is arranged at the bottom of the water storage tank (1) and is provided with a water outlet valve (41) and a plurality of spray heads (42), and the water outlet valve (41) is arranged at one end, close to the water storage tank (1), of the irrigation water pipe (4); the upper portion of storage water tank (1) is seted up overflow mouth (13) and is installed flood irrigation pipe (5), flood irrigation pipe (5) one end with overflow mouth (13) intercommunication, the other end extends to in the greenbelt, just flood irrigation pipe (5) are last to be seted up a plurality of flood irrigation holes (51).

6. The rainwater collection irrigation device for the green belt under the viaduct as claimed in claim 5, wherein: the bottom of the water storage tank (1) is provided with a water outlet (12) communicated with the irrigation water pipe (4), and a filter screen (14) used for shielding the water outlet (12) and the overflow opening (13) is arranged in the water storage tank (1).

7. The rainwater collection irrigation device for the green belt under the viaduct as claimed in claim 1, wherein: the interior bottom surface of storage water tank (1) is sunken to the center by all around with the slope and forms the minimum, sludge discharge pipe (15) that are located the minimum are installed to the bottom of storage water tank (1), just install mud valve (151) on sludge discharge pipe (15).

8. The rainwater collection irrigation device for the green belt under the viaduct as claimed in claim 1, wherein: an observation window (16) made of transparent glass is arranged at the lower part of the water storage tank (1).