CN212224118U - Concave formula greenery patches structure in sponge city - Google Patents

Abstract

The utility model relates to a recessed greenery patches structure field, concretely relates to sponge city recessed greenery patches structure, it includes recessed greenery patches, the greenery patches outward flange surrounds and is provided with water drainage tank, water drainage tank intercommunication has aqueduct and drain pipe, still be equipped with the drainage switching structure of logical closed drain pipe in the water drainage tank, drainage switching structure includes slider and the switching hole of recess in the drain tank bottom of sliding connection in water drainage tank, switch the downthehole waterproof layer that is equipped with bag form, the edge of waterproof layer is along switching hole circumference and the inner wall sealing connection who switches the hole, the slider is connected with the flexible piece, the end connection that the slider was kept away from to the flexible piece is kept away from marginal part in the waterproof layer, drainage switching structure still includes the elastic component that drive slider slided with the shutoff drain pipe towards drain pipe and water drainage. The utility model discloses have the effect that makes the greenery patches can absorb the road surface rainwater and be difficult for making the mashed root of green plant in the greenery patches.

Description

Concave formula greenery patches structure in sponge city

Technical Field

The utility model belongs to the technical field of the technique of recessed greenery patches structure and specifically relates to a recessed greenery patches structure in sponge city.

Background

At present, the urbanization construction is increased day by day, and the road surface is also covered by more and more concrete road surfaces and asphalt road surfaces, so that the water storage capacity of the urban road surface is weakened, the water storage capacity of the city is greatly improved by the construction of the sponge city, and the capacity of the city for coping with drought or flood is improved.

The existing sponge city concave type greenbelt structure is mostly directly connected with the road surface of a city, an overflow well exceeding the surface of the greenbelt by a certain height is arranged in the greenbelt, the greenbelt collects rainwater through a certain slope, the collected rainwater enters the interior of the greenbelt, and when the water capacity in the greenbelt reaches the maximum value and exceeds the surface of the greenbelt, the rainwater exceeding the surface of the greenbelt is discharged through the overflow well arranged in the greenbelt.

The above prior art solutions have the following drawbacks: unnecessary rainwater in the greenery patches is discharged through the overflow well, because the open end of overflow well surpasss certain height of greenery patches surface, make the greenery patches surface need gather certain ponding after just can discharge through the overflow well, when making meet long-time heavy rain, when needing to discharge unnecessary rainwater through the overflow well because the speed of greenery patches infiltration is less than the speed of greenery patches rainwater accumulation, will make the greenery patches surface have ponding, though can effectively reduce the greenery patches and further submerged and produce the condition of flood, but greenery patches surface ponding makes the greenery patches because of soaking the risk that leads to the oxygen deficiency to appear in the ponding for a long time easily, consequently, also improve the space.

SUMMERY OF THE UTILITY MODEL

To the deficiency that prior art exists, one of the purposes of the utility model is to provide a concave formula greenery patches structure in sponge city, it has the effect of green mashed root of planting in the difficult messenger greenery patches.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a sponge city concave greenbelt structure comprises a concave greenbelt, wherein a drainage groove is arranged on the outer edge of the greenbelt in a surrounding mode, the drainage groove is communicated with a water guide pipe and a drainage pipe, one end, far away from the drainage groove, of the water guide pipe extends into soil of the greenbelt, one end, far away from the drainage groove, of the drainage pipe is communicated with a municipal drainage system, a drainage switching structure for opening and closing the drainage pipe is further arranged in the drainage groove, the drainage switching structure comprises a sliding block connected in the drainage groove in a sliding mode and a switching hole recessed in the bottom of the drainage groove, a bag-shaped waterproof layer is arranged in the switching hole, the edge of the waterproof layer is connected with the inner wall of the switching hole in a sealing mode along the circumferential direction of the switching hole, the sliding block is connected with a flexible piece, the end, far away from the sliding block, of the flexible piece is connected to the position, far away from the edge of, when the slider seals the drain pipe, the flexible piece is in the state of tightening, just the tip that the slider was kept away from to the flexible piece is higher than the waterproof layer edge or with the edge parallel and level of waterproof layer, works as when ponding height reaches the one-third of the degree of depth of water drainage tank in the water drainage tank, the drain pipe is opened to the slider.

By adopting the technical scheme, as the drainage grooves are formed in the periphery of the green land, most rainwater from the road surface flows into the drainage grooves, the rainwater entering the switching holes is not easy to enter the bottoms of the switching holes due to the waterproof layers hermetically connected in the switching holes, so that the rainwater in the switching holes is not easy to influence the pressure of the rainwater in the drainage grooves on the waterproof layers, the flexible parts are in a tight state when the sliding blocks seal the drainage pipes, so that the waterproof layers are subjected to certain tension of the flexible parts, when the rainfall is less, the rainwater quantity in the drainage grooves is less, the height of the accumulated water in the drainage grooves is not less than one third of the depth of the drainage grooves, the pressure of the rainwater in the drainage grooves received by the waterproof layers is less than the tension of the flexible parts, the waterproof layers are not stretched towards the bottoms of the switching holes, and the sliding of the sliding blocks connected with the waterproof layers through the flexible, thereby make the slider continue to seal the drain pipe for in most rainwater in the water drainage tank gets into the greenery patches through the aqueduct, make the greenery patches can receive most rainwater from the road surface, guaranteed the water storage capacity in the greenery patches to a certain extent.

When the rainfall is large, the rainwater in the drainage groove is more, the end part of the flexible piece far away from the sliding block is higher than the edge of the waterproof layer or is flush with the edge of the waterproof layer, so that the rainwater in the drainage groove can easily enter the waterproof layer, the pressure of the rainwater in the drainage groove on the waterproof layer is larger than the tension of the flexible piece, the waterproof layer extends towards the bottom of the switching hole, when the height of the accumulated water in the drainage groove reaches one third of the depth of the drainage groove, the sliding block connected with the waterproof layer through the flexible piece slides towards the switching hole, the sliding block is gradually far away from the opening of the drainage pipe, the opening of the drainage pipe is opened, the rainwater can enter the municipal pipeline through the drainage pipe, overflow caused by excessive rainwater in the drainage groove is avoided, the rainwater overflowing from the drainage groove enters the green land, and the possibility that excessive rainwater exists in the green land for a long time is reduced, so that the green plants in the green land are not easy to rot due to excessive moisture in the soil.

The present invention may be further configured in a preferred embodiment as: the water drainage tank is characterized in that a sliding groove is formed in the bottom surface of the water drainage tank in a sunken mode, the bottom of the sliding groove is penetrated through by the water guide pipe and the water drainage pipe to communicate with the water drainage tank, the water guide pipe is close to the switching hole through the opening portion of the sliding groove, the water drainage pipe is located on one side, away from the switching hole, of the water guide pipe through the opening portion of the sliding groove, and the sliding block is located in the sliding.

Through adopting above-mentioned technical scheme, when ponding height in the water drainage tank is greater than the third of water drainage tank degree of depth, the waterproof layer is towards switching the hole bottom and stretching, thereby it slides towards the direction of switching the hole to drive the slider in the spout through the flexible piece of being connected with the waterproof layer, the opposite side and the drain pipe intercommunication of one side and aqueduct intercommunication and spout that are close to the switching hole through the spout, make the slider can slide towards the aqueduct direction at gliding in-process, thereby make the opening of aqueduct covered by the slider, make more rainwater get into in the drain pipe, thereby the possibility in more rainwater passes through the aqueduct entering greenery patches has been reduced.

The present invention may be further configured in a preferred embodiment as: when the waterproof layer is fully extended towards the bottom of the switching hole, the vertical distance between the bottommost end of the waterproof layer and the edge of the waterproof layer is larger than or equal to the length of the sliding groove.

Through adopting above-mentioned technical scheme, when ponding height in the water drainage tank is greater than the third of water drainage tank degree of depth, make the waterproof layer because of rainwater pressure too big towards switching hole bottom extension, make the flexible piece of being connected with the waterproof layer drive the slider towards the direction of switching the hole and slide, when the waterproof layer is towards switching hole bottom extension completely, the vertical distance through the bottommost end of waterproof layer and waterproof layer edge is greater than the length of spout, make the waterproof layer have sufficient extension space to drive the slider through the flexible piece and slide, the sliding length of slider has been increaseed, make the slider can be bigger with the drain pipe is opened.

The present invention may be further configured in a preferred embodiment as: and a pulling plate is arranged in the switching hole, is positioned below the waterproof layer and is fixedly connected with the waterproof layer.

Through adopting above-mentioned technical scheme, rainwater entering in the water drainage tank switches downtheholely, through flexible piece, waterproof layer and arm-tie three's fixed connection, when there is not water in the waterproof layer or water when less, because the self gravity of arm-tie for the waterproof layer is difficult for wafting out and switches outside the hole, in order to avoid the rainwater infiltration in the water drainage tank to switch downtheholely, has improved the life that the drainage switched the structure.

The present invention may be further configured in a preferred embodiment as: the inner wall fixedly connected with limiting plate of switching the hole, the limiting plate is compared and is more close to the water drainage tank bottom surface in the arm-tie, the length of limiting plate is greater than the arm-tie and switches the gap length between the hole inner wall.

Through adopting above-mentioned technical scheme, when the rainfall in the water drainage tank reduces, the rainwater in the water drainage tank reduces the pressure of arm-tie for the elasticity of flexible piece passes through slider and flexible piece and draws the arm-tie to the open end in switching hole, makes the arm-tie difficult continuation to the open end motion in switching hole through the limiting plate, has reduced the arm-tie from the risk of switching downthehole roll-off, has improved switching device's stability.

The present invention may be further configured in a preferred embodiment as: and the vertical distance between the bottom end of the switching hole and the bottommost end of the waterproof layer which is fully extended downwards is greater than the thickness of the pull plate.

Through adopting above-mentioned technical scheme, rainwater in the water drainage tank gets into in the waterproof layer, after the waterproof layer extends completely, the arm-tie moves towards switching hole bottom along with the complete extension of waterproof layer, the bottom through switching the hole is greater than the plate thickness with the vertical distance of the very bottom of waterproof layer downward complete extension, make this moment leave the space between arm-tie and the bottom of switching the hole, make the waterproof layer difficult because of the hindrance of arm-tie and can't extend completely, thereby influence the sliding length of slider, the drain pipe opening that the slider was opened when the third that highly is greater than the water drainage tank degree of depth when the interior ponding of water drainage tank is less.

The present invention may be further configured in a preferred embodiment as: the opening end of the switching hole is rotatably connected with a fixed pulley, and the flexible part is lapped on the fixed pulley.

By adopting the technical scheme, when the pulling plate is pulled by the flexible part, the friction force generated by the flexible part and the switching hole in the pulling process is reduced through the fixed pulley, the abrasion of the flexible part is slowed down, and the service life of the flexible part is prolonged.

The present invention may be further configured in a preferred embodiment as: the drainage channel bottom surface between switching hole and the spout is sunken to have a spacing groove, the one end in spacing groove and the open end intercommunication in switching hole, the other end in spacing groove and spout intercommunication, the flexible piece is located the spacing inslot.

Through adopting above-mentioned technical scheme, when the rainwater in the water drainage tank flows, restriction effect through the spacing groove has slowed down the flexible piece and has floated or swing because of the flow of rivers for the flexible piece is difficult to follow the interior roll-off of fixed pulley.

The present invention may be further configured in a preferred embodiment as: the aqueduct includes the inlet tube and is responsible for, the one end and the spout bottom surface intercommunication of inlet tube, the other end and the person in charge intercommunication of inlet tube, it buries inside the greenery patches to be responsible for, the equidistance intercommunication has a plurality of branch pipe on the lateral wall of being responsible for.

Through adopting above-mentioned technical scheme, rivers in the water drainage tank get into through the inlet tube and are responsible for, flow into each branch pipe through being responsible for again, get into the greenery patches through the branch pipe in, through a plurality of branch pipe of intercommunication, make rivers in the main pipe get into the greenery patches through a plurality of branch pipe for the rainwater of infiltration is more even in the greenery patches.

The present invention may be further configured in a preferred embodiment as: sponge strips are filled in the branch pipes.

Through adopting above-mentioned technical scheme, when rainwater in the branch pipe enters the greenery patches through the infiltration of irrigation hole in, fill the inner space of branch pipe through the sponge strip for in the silt in the greenery patches is difficult to get into the branch pipe, reduced the risk that the branch pipe blockked up because of the entering of silt in the greenery patches, and then prolonged the live time of branch pipe.

To sum up, the utility model discloses a following at least one useful technological effect:

1. when more rainwater is in the green land and the drainage groove, the sliding block plays a certain role in covering the water guide pipe, so that less rainwater enters the green land through the water guide pipe, the possibility that too much rainwater exists in the green land for a long time is reduced, and roots of green plants in the green land are not easy to rot due to excessive moisture in soil;

2. when the rainwater in the green land and the drainage groove is less, the sliding block plays a certain role in covering the drainage pipe, so that most of the rainwater enters the green land from the water guide pipe, most of the rainwater from the road surface can be received in the green land, and the water storage capacity in the green land is ensured to a certain extent;

3. the waterproof layer is enabled to obtain a certain supporting effect of the pulling plate through the fixed connection of the flexible piece, the waterproof layer and the pulling plate, so that the surface of the waterproof layer is not easy to break due to the pressure of overlarge rainwater, the rainwater entering the upper part of the waterproof layer is difficult to leak through the waterproof layer, and the stability of the drainage switching structure is improved;

4. the main pipe is communicated with a plurality of branch pipes, and the branch pipes extend into the green land, so that rainwater in the branch pipes can more uniformly permeate into the green land;

5. the sponge strip of branch pipe intussuseption for in the greenery patches silt is difficult to get into the branch pipe, reduced the risk that the branch pipe blockked up because of the entering of greenery patches silt, and then prolonged the live time of branch pipe.

Drawings

Fig. 1 is a schematic view of an installation state of a concave greenbelt structure of a sponge city according to the present invention;

FIG. 2 is a schematic view of a sponge city recessed greenbelt structure in a drainage state;

FIG. 3 is an enlarged schematic view of section A of FIG. 2;

FIG. 4 is an enlarged schematic view of section B of FIG. 2;

fig. 5 is a schematic view of the sponge city recessed green space structure in drainage state of the present invention.

In the figure, 1, green land; 2. a water discharge tank; 21. a switching hole; 211. a water seepage hole; 22. a chute; 221. a placement groove; 222. a card slot; 23. a limiting groove; 3. a water conduit; 31. a water inlet pipe; 32. bending the pipe; 33. a main pipe; 34. a branch pipe; 341. irrigation holes; 342. a sponge strip; 4. a drain pipe; 5. a waterproof layer; 6. a limiting plate; 7. pulling a plate; 8. a fixed pulley; 9. a switching device; 91. a slider; 912. a clamping block; 92. a flexible member; 93. an elastic member; 10. and a drainage switching structure.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a concave formula greenery patches structure in sponge city, including concave greenery patches 1 that just is the rectangle and enclose the water drainage tank 2 of establishing in greenery patches 1 periphery, water drainage tank 2 intercommunication has a plurality of drain pipes 4 with the municipal pipeline intercommunication and extends to a plurality of aqueducts 3 in the greenery patches 1 soil, still including the drainage switching structure 10 that is used for switching the logical closed condition of drain pipe 4 or aqueduct 3 and water drainage tank 2.

Referring to fig. 1 and 2, the drainage channel 2 extends along the circumferential edge of the green land 1 and is communicated end to end, one side of the drainage channel 2, which is far away from the green land 1, is adjacent to the road surface, the height of the side wall of the drainage channel 2, which is close to the green land 1, is equal to the height of the side wall of the drainage channel 2, which is far away from the green land 1, the upper surface of the side wall of the drainage channel 2, which is far away from the green land 1, is flush with the road surface, the upper surface of the side wall of the drainage channel 2, which is close to the green land 1, is flush with the edge of the green land 1, the groove bottom of the drainage channel 2 is parallel to the road surface, the side wall of.

The drainage switching structures 10 are disposed at the bottom of the drainage groove 2, in this embodiment, two drainage switching structures 10 are disposed at two opposite sides of the green space 1, and in other embodiments, the drainage switching structures 10 may be increased or decreased according to actual situations.

Referring to fig. 3, the drainage switching structure 10 includes a switching hole 21 recessed in the bottom of the drainage channel 2 and a runner 22.

The switching hole 21 is formed in a circular blind hole shape, and the diameter of the switching hole 21 is 80% of the width of the drain tank 2.

The inner wall fixedly connected with waterproof layer 5 of switching hole 21, waterproof layer 5 are the bag form, and make by waterproof plastics, and the edge of waterproof layer 5 and the lateral wall sealing connection who switches hole 21, the vertical distance of the edge of waterproof layer 5 and the bottom of water drainage tank 2 is 20 mm.

Switch the sunken infiltration hole 211 that has the horizontal extension of 21 inside walls in hole, infiltration hole 211 is circular through-hole form, and infiltration hole 211 is located waterproof layer 5's top, and the bottom of infiltration hole 211 is 2mm with the 5 marginal vertical distance of waterproof layer, and the diameter in infiltration hole 211 is 5mm, and infiltration hole 211 totally 18 and evenly distributed is in the inner wall that switches hole 21 in this embodiment, can increase or delete the quantity in infiltration hole 211 according to actual conditions in other embodiments.

The inner wall of the switching hole 21 is fixedly connected with a limiting plate 6, the limiting plate 6 is cuboid, the limiting plate 6 extends towards the center of the switching hole along the horizontal direction, the length of the limiting plate 6 is 5% of the diameter of the switching hole 21, the two limiting plates 6 are two, the two limiting plates 6 are symmetrical about the axis of the switching hole 21, the limiting plates 6 are closer to the bottom of the switching hole 21 than the waterproof layer 5, the vertical distance between the upper surface of the limiting plate 6 and the edge of the waterproof layer 5 is 5mm,

the pulling plate 7 is placed in the switching hole 21, the pulling plate 7 is in a circular plate shape, the diameter of the pulling plate 7 is consistent with that of the switching hole 21, the thickness of the pulling plate 7 is 5mm, and the center of one end, close to the drainage groove 2, of the pulling plate 7 is fixedly connected with the center of the waterproof layer 5.

The sunken spacing groove 23 that has of 2 bottom surfaces of water drainage tank, spacing groove are located and switch between hole 21 and the spout 22, the one end of spacing groove 23 and the open end intercommunication of switching hole 21, the other end of spacing groove 23 and spout 22 are close to the one side intercommunication of switching hole 21, and spacing groove 23 is all parallel with the lateral wall and the diapire of water drainage tank 2.

The opening end of the switching hole 21 is rotatably connected with a fixed pulley 8, the fixed pulley 8 rotates around the horizontal direction perpendicular to the extending direction of the limiting groove 23, and the fixed pulley 8 is located at the connecting position of the groove bottom of the limiting groove 23 and the port of the switching hole 21.

The cross section of the sliding chute 22 is rectangular, the sliding chute 22 extends along the length direction of the drainage channel 2, the central line of the sliding chute 22 along the extending direction is intersected with the axis of the switching hole 21, the length of the sliding chute 22 is 120% of the width of the drainage channel 2, and the width of the sliding chute 22 is 70% of the width of the drainage channel 2.

The two side walls of the sliding groove 22 are both recessed with a clamping groove 222, the clamping groove 222 is located at the lower end of the side wall of the sliding groove 22, the length of the clamping groove 222 is the same as that of the sliding groove 22, the width of the clamping groove 222 is 50% of the depth of the sliding groove 22, and the depth of the clamping groove 222 is 10 mm.

The depth of the switching hole 21 is 120% of the length of the sliding groove 22, and when the waterproof layer 5 is completely filled with water, the vertical distance between the end of the waterproof layer 5 closest to the bottom of the switching hole 21 and the end of the waterproof layer 5 closest to the bottom surface of the drainage channel 2 is less than one third of the depth of the drainage channel 2 and 60% of the length of the sliding groove 22.

The drain switching mechanism 10 further comprises a switching device 9 slidably connected within the chute 22.

The switching device 9 comprises a slide block 91, the slide block 91 is positioned in the slide groove 22 and slides along the length direction of the slide groove, the length of the slide block 91 is 50% of the length of the slide groove 22, and the width of the slide block 91 is consistent with the width of the slide groove 22.

Referring to fig. 3 and 5, two side walls of the slider 91 are fixedly connected with a fixture block 912 sliding in the fixture groove 222, the length of the fixture block 912 is identical to that of the slider 91, the thickness of the fixture block 912 is identical to that of the fixture groove 222, the width of the fixture block 912 is identical to that of the fixture groove 222, when the slider 91 slides to an end close to the switching hole 21, the slider 91 completely covers the open end of the water conduit 3 to close the water conduit 3, and when the slider 91 slides to an end far away from the switching hole 21, the slider 91 completely covers the open end of the drain pipe 4 to close the drain pipe 4.

One end fixedly connected with flexible piece 92 that slider 91 is close to switching hole 21, flexible piece 92 is rectangular form, flexible piece 92 is made by the fibre rope in this embodiment, still can use the cotton rope in other embodiments, wire rope etc. makes, the other end and waterproof layer 5 fixed connection of flexible piece 92, when filling up water completely in waterproof layer 5, the tip fixed connection that the slider was kept away from to the flexible piece is on the waterproof layer is closest to the inner wall of the bottom department of water drainage tank, flexible piece 92 overlap joint is on fixed pulley 8, flexible piece 92 is located spacing groove 23, flexible piece 92 is in taut state all the time, when arm-tie 7 and limiting plate 6 butt, the perpendicular distance that the surface that arm-tie 7 was close to switching hole 21 bottom and switched hole 21 bottom surface is 120% of slider 91 length.

The sunken standing groove 221 that has of one side inner wall that switches hole 21 is kept away from to spout 22, the one end that switches hole 21 is kept away from to slider 91 is equipped with elastic component 93, elastic component 93 one end and slider 91 fixed connection, the one end that the slider was kept away from to elastic component 93 and standing groove 221 keep away from the one end fixed connection of spout 22, elastic component 93 is cylindrical coil spring, ponding height in water drainage tank 2 is less than the third of the 2 degree of depth of water drainage tank in, slider 91 covers 4 openings of drain pipe completely, arm-tie 7 and limiting plate 6 in close contact with this moment, and elastic component 93 is in tensile state.

Referring to fig. 2 and 4, the water guiding pipe 3 and the water discharging pipe 4 both penetrate through the bottom of the chute to communicate with the chute 22, one chute 22 communicates with one water guiding pipe 3 and one water discharging pipe 4, the water guiding pipe 3 is located on one side close to the switching hole 21, and the water discharging pipe 4 is located on one side of the water guiding pipe 3 away from the switching hole 21.

The water guiding pipe 3 comprises a water inlet pipe 31, an elbow 32 and a main pipe 33, wherein the diameter of the water inlet pipe 31 is 60% of the width of the drainage groove 2, one end of the water inlet pipe 31 far away from the drainage groove 2 is communicated with the main pipe 33, and the main pipe 33 is communicated with the water inlet pipe 31 through the elbow 32.

The side wall of the main pipe 33 is communicated with branch pipes 34, the branch pipes 34 are parallel to the bottom surface of the drainage channel 2, the branch pipes 34 are perpendicular to the main pipe 33, circular irrigation holes 341 are formed in the annular surface of the branch pipes 34, the irrigation holes 341 are uniformly distributed on the annular surface of the branch pipes 34, one ends, far away from the main pipe 33, of the branch pipes 34 are closed, sponge strips 342 are filled in the inner walls of the branch pipes 34, the number of the branch pipes 34 is six in total and the branch pipes are distributed on the side wall of the main pipe 33 at equal intervals in the embodiment, and the number of the branch pipes 34 can be increased.

The implementation principle of the embodiment is as follows:

when no rainfall or little rainfall exists, rainwater and road surface drainage enter the drainage channel 2, because the water flow is little, the height of accumulated water in the drainage channel 2 is less than one third of the depth of the drainage channel 2, because of the mutual matching of the pulling plate 7, the limiting plate 6, the flexible piece 92, the sliding block 91 and the elastic piece 93, the sliding block 91 completely covers the opening of the drainage pipe 4, at the moment, the elastic piece 93 is in a stretching state, the sliding block 91 is subjected to elastic force towards the direction of the elastic piece 93, because the flexible piece 92 is in a tensioning state, the sliding block 91 is subjected to tensile force towards the direction of the flexible piece 92, the elastic force generated by the elastic piece 93 to the sliding block is opposite to the direction of the tensile force generated by the flexible piece 92 to the sliding block, the sliding block 91 is in a balanced state, most of accumulated water in the drainage channel 2 flows into the water inlet pipe 31, the accumulated water enters the main, as the circular irrigation holes 341 are formed in the annular surface of the branch pipe 34, accumulated water in the branch pipe 34 enters the green land 1 through the circular irrigation holes 341, so that more water resources can be collected in the green land 1, and the water storage function of the sponge city is better realized.

Because the end of the flexible member 92 away from the sliding groove 22 is connected to the waterproof layer 5, through the fixed connection between the waterproof layer 5 and the pulling plate 7, so that the end of the flexible element 92 remote from the chute 22 has a vertical upward component of force on the pulling plate 7, the accumulated water in the switching hole 21 is blocked by the waterproof layer 5 through the waterproof layer 5 connected in the switching hole 21, so that the pulling plate 7 fixedly connected with the waterproof layer 5 is stressed by the vertically downward water, because the height of the accumulated water in the drainage channel 2 is less than one third of the depth of the drainage channel 2, the pressure of the water on the pulling plate 7 is smaller, so that the resultant force of the gravity of the pulling plate 7 in the switching hole 21 and the accumulated water pressure in the drainage groove 2 is smaller than the vertical upward component force applied to the pulling plate 7, so that the pulling plate 7 has a tendency to move upward but the pulling plate 7 cannot move upward any more due to the hindering action of the stopper plate 6, so that the pulling plate 7 is brought into close contact with the stopper plate 6.

When the rainfall is large, because the water guide pipe 3 extends into the soil, when the water content in the soil is large, the drainage speed of the water guide pipe 3 is affected, so that the drainage speed in the water guide pipe 3 is slow, the water inflow in the drainage groove 2 is larger than the water outflow of the drainage groove 2, the pull plate 7 is subjected to the pressure of vertically downward water, when the height of the accumulated water in the drainage groove 2 is larger than one third of the depth of the drainage groove 2, the resultant force of the pressure of the vertically downward water and the self gravity of the pull plate 7 is larger than the vertically upward component force of the flexible part 92 on the pull plate 7, the pulling force of the flexible part 92 on the slide block 91 is larger than the elastic force of the elastic part 93 on the slide block 91, the pull plate 7 moves downwards, the slide block 91 is driven by the flexible part 92 to move towards the water guide pipe 3, the opening part of the drainage pipe 4 is exposed, and a part of the accumulated water in the drainage groove 2 flows into a municipal pipeline from the drainage pipe 4, the flow of the aqueduct 3 is reduced, thereby reducing the flow of the ponding towards the interior of the green land 1, reducing the risk of the ponding of the green land 1 and reducing the root necrosis of the green plants in the green land 1 caused by the excessive ponding.

When the accumulated water height in the drainage channel 2 is greater than one-half of the depth of the drainage channel 2, the resultant force of the pressure of the vertically downward water on the pulling plate 7 and the self gravity is far greater than the pulling force of the flexible part 92 on the pulling plate 7, the pulling force of the flexible part 92 on the sliding block 91 is far greater than the elastic force of the elastic part 93 on the sliding block 91, the sliding block 91 slides to the opening of the water guide pipe 3, the sliding block 91 prevents most of the accumulated water from entering the green land 1 through the water guide pipe 3, most of the accumulated water in the drainage channel 2 enters the municipal pipeline through the drainage pipe 4, the amount of water flowing into the green land 1 is reduced when the soil water storage amount in the green land 1 reaches a large value, the possibility that the green land 1 is submerged is greatly reduced, and the survival rate of green plants in the green land 1 is higher.

When rainstorm stops, when accumulated water in the drainage groove 2 is gradually drained by the drainage pipe 4, the liquid level of the accumulated water in the drainage groove 2 is lowered, the pressure of water borne by the waterproof layer 5 is gradually reduced, when the accumulated water in the drainage groove 2 gradually recedes and the waterproof layer 5 is still full of water, because the vertical distance between the bottommost end of the waterproof layer 5 and the edge of the waterproof layer 5 close to the bottom surface of the drainage groove 2 is less than one third of the depth of the drainage groove 2, the pressure of the water in the waterproof layer 5 is less than the pulling force of the flexible part 92 on the waterproof layer 5, the extending part of the waterproof layer 5 gradually moves towards the drainage groove 2, the pulling force of the flexible part 92 borne by the sliding block 91 is reduced, the elastic force of the elastic part 93 on the sliding block 91 is greater than the pulling force of the flexible part 92 on the sliding block 91, the sliding block 91 moves towards the drainage pipe 4, and the pulling plate 7 gradually moves upwards until the, so that the pulling plate 7 can not move upwards any more, and at the same time, the sliding block 91 moves to completely cover the opening of the water discharging pipe 4, so that the function of conveying water flow to the green land through the water guiding pipe 3 is restored, so as to continuously realize the effect of better water collection of the green land, and the rainwater in the water guiding pipe 3 flows through the main pipe 33 and the branch pipe 34, so that the rainwater continuously permeates into the green land 1 through the irrigation holes 341 on the branch pipe 34.

Through spout 22 near one side and aqueduct 3 intercommunication that switch hole 21, spout 22's opposite side and drain pipe 4 intercommunication, make slider 91's slip orbit can slide along drain pipe 4 and aqueduct 3 and spout 22's intercommunication department, when ponding height in the drain tank 2 is greater than the degree of depth of drain tank 2, arm-tie 7 and waterproof layer 5 are because of receiving great rainwater pressure downstream, make slider 91 slide to covering aqueduct 3 opening part through the pulling force of the flexible part 92 of being connected with waterproof layer 5, make most rainwater flow into municipal pipeline through drain pipe 4, the possibility that greenery patches 1 was submerged because of the rainwater is great has been reduced.

When completely extending to switching hole 21 bottom through waterproof layer 5, the perpendicular distance that waterproof layer 5's bottommost end and waterproof layer 5 are close to the edge of water drainage tank 2 bottom surface is less than the one third of water drainage tank degree of depth and is 60% of spout 22 length for the length that waterproof layer 5 can extend is greater than the distance that slider 91 removed in spout 22, when waterproof layer 5 completely extended to switching hole 21 bottom, because leave the space between the bottom of arm-tie 7 and switching hole 21, make arm-tie 7 not hinder the complete extension of waterproof layer 5 because of less with the distance of switching hole 21 bottom when the downstream, make slider 91 can cover the opening of aqueduct 3 completely towards the gliding in-process of aqueduct 3 from drain pipe 4.

Through the fixed connection of waterproof layer 5 and flexible piece 92 and arm-tie 7 for flexible piece 92 needn't pass waterproof layer 5 and arm-tie 7 fixed connection, makes waterproof layer 5 surface not have great space, makes the change of the water pressure that arm-tie 7 received not influenced by waterproof layer 5 hourglass rivers, makes the switching of auto-change over device 9 more accurate.

Through stopping of limiting plate 6, when ponding height in water drainage tank 2 is not to one third of water drainage tank 2 degree of depth for flexible 92 is in taut state all the time, makes elastic component 93 be in tensile state all the time, has guaranteed that arm-tie 7 does not pull out because of elastic component 93's elasticity is too big in switching hole 21.

The vertical distance of the edge through waterproof layer 5 and the bottom of water drainage tank 2 is 20mm, make waterproof layer 5 leave certain space with the open end that switches hole 21, make waterproof layer 5 be difficult for being washed out by the rivers that flow in water drainage tank 2 and switch in the hole 21, make the difficult bottom that gets into and switch hole 21 of rivers in water drainage tank 2, make arm-tie 7 can receive the pressure of the ponding in water drainage tank 2 through waterproof layer 5.

Through the effect of permeating water of infiltration hole 211 for the ponding of gathering because of the existence of waterproof layer 5 in switching hole 21 can be discharged, thereby has reduced the long-time condition of gathering of ponding in switching hole 21, in order to avoid the environment in the green space 1 that the health preserving of mosquito influences in the ponding.

The fixed pulley 8 is rotatably connected to one end of the switching hole 21 close to the sliding chute 22, so that friction between the flexible part 92 and the switching hole 21 is reduced, and the service life of the flexible part 92 is prolonged.

Through the drainage channel 2 bottom surface depression spacing groove 23 between switching hole 21 and spout 22, because flexible 92 is located spacing groove 23 for flexible 92 is difficult because of the flow swing of rivers, makes flexible 92 difficult follow the interior roll-off of fixed pulley 8, makes auto-change over device 9 more stable.

The upper surface of the side wall of the drainage channel 2 far away from the green land 1 is flush with the road surface, so that the rainwater in the drainage channel 2 is not easy to overflow to the road surface, thereby preventing more accumulated water from influencing the walking of people,

by the branch pipes 34 equidistantly distributed on the side wall of the main pipe 33, the area of the water flow penetrating into the interior of the green land 1 through the irrigation holes 341 of the branch pipes 34 is larger, because the end of the branch pipe 34 far away from the main pipe 33 is closed, so that the water flow in the branch pipe 34 does not directly flow out from the bottom of the branch pipe 34 in a large amount, and the penetration of the water flow is more uniform.

The height through inlet tube 31 is 30mm, because inlet tube 31 highly less for the pressure that rivers formed in the inlet tube 31 is less, when the soil water capacity reaches the saturation in the greenery patches 1 and takes place reverse osmosis, make in getting into the rainwater ability comparatively easy backward flow of branch pipe 34 and getting into water drainage tank 2 in the soil, make unnecessary moisture can discharge through drain pipe 4 in the soil.

Through the sponge strip 342 of intussuseption in branch pipe 34 for silt in the greenery patches 1 is difficult to get into in the branch pipe 34 from irrigation hole 341, makes branch pipe 34 be difficult for blockking up, makes the effect that rivers in the branch pipe 34 pass through the infiltration of irrigation hole 341 better.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (10)

1. The utility model provides a concave formula greenery patches structure in sponge city which characterized in that: the water drainage system comprises a concave green land (1), wherein a water drainage groove (2) is formed in the outer edge of the green land (1) in a surrounding mode, the water drainage groove (2) is communicated with a water guide pipe (3) and a water drainage pipe (4), one end, far away from the water drainage groove (2), of the water guide pipe (3) extends into soil of the green land (1), one end, far away from the water drainage groove (2), of the water drainage pipe (4) is communicated with a municipal water drainage system, a water drainage switching structure (10) for opening and closing the water drainage pipe (4) is further arranged in the water drainage groove (2), the water drainage switching structure (10) comprises a sliding block (91) connected in the water drainage groove (2) in a sliding mode and a switching hole (21) sunken in the bottom of the water drainage groove (2), a bag-shaped waterproof layer (5) is arranged in the switching hole (21), and the edge of the waterproof layer (5) is connected with, the slider (91) is connected with a flexible part (92), the end connection that slider (91) was kept away from in flexible part (92) is kept away from marginal place in waterproof layer (5), drainage switching structure (10) still include drive slider (91) towards drain pipe (4) and water drainage tank (2) intercommunication department slip with the elastic component (93) of shutoff drain pipe (4), when slider (91) closed drain pipe (4), flexible part (92) are in the state of straining, and the tip that slider (91) were kept away from in flexible part (92) is higher than waterproof layer (5) edge or with the edge parallel and level of waterproof layer (5), when ponding height reaches the third of the degree of depth of water drainage tank (2) in water drainage tank (2), drain pipe (4) are opened in slider (91).

2. The sponge city sunken greenbelt structure of claim 1, wherein: the sunken spout (22) that has of water drainage tank (2) bottom surface, aqueduct (3) and drain pipe (4) all run through the tank bottom of spout (22) in order to communicate water drainage tank (2), the oral area of aqueduct (3) and spout (22) intercommunication is close to and switches hole (21), the oral area of drain pipe (4) and spout (22) intercommunication is located aqueduct (3) and keeps away from the one side that switches hole (21), slider (91) are located spout (22) and slide along spout (22).

3. The sponge city depressed greenbelt structure of claim 2, wherein: when the waterproof layer (5) is completely extended towards the bottom of the switching hole (21), the vertical distance between the bottommost end of the waterproof layer (5) and the edge of the waterproof layer (5) is greater than or equal to the length of the sliding groove (22).

4. The sponge city sunken greenbelt structure of claim 1, wherein: be equipped with arm-tie (7) in switching hole (21), arm-tie (7) are located the below of waterproof layer (5) and with waterproof layer (5) fixed connection.

5. The sponge city sunken greenbelt structure of claim 4, wherein: switch the inner wall fixedly connected with limiting plate (6) in hole (21), limiting plate (6) are located the top of arm-tie (7), the length of limiting plate (6) is greater than arm-tie (7) and switches the space length between hole (21) inner wall.

6. The sponge city depressed greenbelt structure of claim 5, wherein: the vertical distance between the bottom end of the switching hole (21) and the lowest end of the waterproof layer (5) which extends downwards completely is larger than the thickness of the pulling plate (7).

7. The sponge city sunken greenbelt structure of claim 1, wherein: the opening end of the switching hole (21) is rotatably connected with a fixed pulley (8), and the flexible part (92) is lapped on the fixed pulley (8).

8. The sponge city depressed greenbelt structure of claim 7, wherein: switch water drainage tank (2) bottom surface between hole (21) and spout (22) and cave in spacing groove (23), the one end of spacing groove (23) and the open end intercommunication of switching hole (21), the other end and spout (22) intercommunication of spacing groove (23), flexible piece (92) are located spacing groove (23).

9. The sponge city sunken greenbelt structure of claim 1, wherein: aqueduct (3) include inlet tube (31) and be responsible for (33), the one end and spout (22) bottom surface intercommunication of inlet tube (31), the other end and the person in charge (33) intercommunication of inlet tube (31), it buries inside greenery patches (1) to be responsible for (33), the equidistance intercommunication has a plurality of branch pipe (34) on the lateral wall of being responsible for (33), irrigation hole (341) have been seted up on branch pipe (34), irrigation hole (341) evenly distributed is on branch pipe (34) lateral wall, the one end that is responsible for (33) is kept away from in branch pipe (34) is sealed.

10. The sponge city depressed greenbelt structure of claim 9, wherein: sponge strips (342) are filled in the branch pipes (34).

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