CN115217209B

CN115217209B - Sponge detention pond

Info

Publication number: CN115217209B
Application number: CN202211023278.1A
Authority: CN
Inventors: 顾美芳
Original assignee: Suzhou Chengnan Landscaping Engineering Co ltd
Current assignee: Suzhou Chengnan Landscaping Engineering Co ltd
Priority date: 2022-08-25
Filing date: 2022-08-25
Publication date: 2023-10-03
Anticipated expiration: 2042-08-25
Also published as: CN115217209A

Abstract

The utility model relates to the technical field of detention ponds and discloses a sponge detention pond, which comprises a detention pond area and a concrete enclosure poured at the periphery of the detention pond area, wherein a drainage channel is formed by four drainage ditches in an enclosing mode on the top surface of the concrete enclosure, drainage ditches are formed in the periphery of the concrete enclosure, the drainage ditches are formed in the inner side wall of the periphery of the concrete enclosure, the drainage channels are communicated with the detention pond area through the drainage ditches, a water filtering mechanism for filtering rainwater is arranged on the inner bottom surface of the drainage ditches, and a plurality of water filtering mechanisms are arranged on two sides of the drainage ditches. The utility model has the effect of improving the whole environment of the waste pollution detention pool area on the road surface.

Description

Sponge detention pond

Technical Field

The utility model relates to the technical field of detention ponds, in particular to a sponge detention pond.

Background

Sponge city construction is an important measure for responding to national call and meeting the development needs of the age. The development facility construction of the sponge cities is still in a starting stage, and the ecological retention facility is one of the facility construction forms; the biological detention facility is a structural rainwater controller for intercepting and temporarily storing water quality and quantity, and is an important device in a sponge city system for removing pollutants in rainwater runoff by utilizing soil and vegetation in shallow water or a landscape area.

The Chinese patent publication No. CN208105449U discloses an ecological retention pond which comprises: the planting layer, the sand filtering layer, the water retention layer, the drainage layer and the cushion layer; planting soil is filled in the planting layer, sand and stone are filled in the sand filtering layer, wood dust is filled in the water-retaining layer, broken stone is filled in the water-discharging layer, and broken stone is filled in the cushion layer; the side wall is provided with plain soil; aquatic plants are planted on the planting layer; an overflow well is arranged in the ecological detention pond, and penetrates through the planting layer, the sand filtering layer, the water retention layer and the drainage layer; a drain pipe with one end extending out of the drain layer is arranged in the drain layer.

Aiming at the related technology, the inventor considers that the ecological detention pond can carry out rapid preliminary filtration on rainwater, and avoids the conditions of slow infiltration or ponding and the like as much as possible; however, when the road surface is flushed by rain in stormy weather, the sediment mixed with the road surface is mixed with waste on the road surface, such as a pop can or a plastic bag, so that the whole environment of the detention pool area is polluted.

Disclosure of Invention

In order to solve the problem that waste garbage on a road surface pollutes the whole environment of a detention pool area, the utility model provides a sponge detention pool.

The utility model provides a sponge detention pond, which adopts the following technical scheme:

the utility model provides a sponge detention pond, including detention pond region and pour in the regional marginal concrete of detention pond encloses the fender all around, the concrete encloses and keeps off the top surface and has seted up drainage channel, drainage channel is enclosed by four escape canal and closes and form, and the concrete encloses and keeps off all around the inside wall and has seted up the drainage ditch, drainage channel passes through the drainage ditch with detention pond region is linked together, the bottom surface is provided with the drainage mechanism that is used for rainwater filterable in the escape canal, the drainage mechanism is located the drainage ditch both sides all are provided with a plurality of.

Through adopting above-mentioned technical scheme, the rain wash road surface of stormwater weather, the rubbish and the silt inflow drainage channel on the road surface can be mingled with to the rainwater, and sewage and rubbish flow into drainage channel through drainage channel flow direction drainage mechanism this moment, and the sewage on road surface flows through drainage ditch flow into the detention pond area after filtering through drainage mechanism, and the rubbish on road surface is blocked to the drainage ditch outside by drainage mechanism to this rubbish that avoids the road surface flows into the detention pond area.

Optionally, the drainage mechanism includes vertical being fixed in guide rail draw runner and vertical slip of two relative inside walls of escape canal set up in two filter cotton plywood between the guide rail draw runner, two the equal vertical forked tail recess of seting up of lateral wall that the guide rail draw runner is close to mutually, filter cotton plywood both sides are all vertically fixed with the forked tail rectangular, the forked tail rectangular pass through the forked tail recess peg graft in inside the guide rail draw runner.

By adopting the technical scheme, sewage flows to the filter cotton laminate through the inclined inner bottom surface of the drainage channel, and flows to the water collecting groove after flowing through the filter cotton laminate for filtering, so that sediment mixed with the road surface by rainwater is prevented from flowing to the detention pond area as much as possible, and the sediment is filled in a gap of the soil layer of the detention pond area, so that the rainwater cannot permeate into the soil layer of the detention pond area; the staff can detach the filter cotton laminate from the drainage channel for cleaning and reuse.

Optionally, four apex angles of drainage channel inner bottom surface all are vertically equipped with the garbage collection well, the garbage collection well top is provided with and is used for covering garbage collection well top open-ended apron mechanism, apron mechanism including cover in the open-ended cover panel on garbage collection well top and be fixed in cover the waterproof piston of panel bottom surface, waterproof piston passes through the opening on garbage collection well top extends to inside the garbage collection well, waterproof piston all around the lateral wall with inside wall one-to-one and the looks butt around the garbage collection well, the drainage channel inside is provided with and is used for driving four the whole synchro-moving of apron mechanism.

By adopting the technical scheme, the cover panel blocks the opening at the top end of the garbage collection well through the waterproof piston when the road surface is flushed by rainwater in heavy rain weather, so that rainwater is prevented from flowing into the garbage collection well as much as possible; when garbage collection is needed, a worker drives the waterproof piston to vertically upwards separate from the opening at the top end of the garbage collection well through the synchronous mechanism, so that the working efficiency of the worker is improved.

Optionally, the drainage passageway is interior the bottom surface be close to the vertical guide groove of seting up in position of garbage collection well apex angle, the synchro mechanism includes through the vertical wearing of guide groove locates the inside drive straight-bar of drainage passageway, fixed connection in drive straight-bar bottom with drive gasbag and fixed connection between two adjacent between the drive gasbag the ventilation catheter in the guide groove, drive straight-bar top is fixed in cover panel bottom surface, ventilation catheter week side is provided with the ooff valve.

Through adopting above-mentioned technical scheme, when the inside rubbish of having piled up on road surface of drainage channel, the staff passes through electric air pump and is linked together of ventilation catheter, and the manual ooff valve of opening ventilation catheter tip then gaseous inflow drive gasbag is inside, and the vertical top of inflation that drives the straight-bar through drive gasbag is ejecting cover panel, and cover panel passes through the drive straight-bar to this realizes opening on garbage collection well top through electric air pump is synchronous.

Optionally, the drainage passageway is inside to be provided with and is used for cleaning rubbish extremely inside the cleaning mechanism of refuse collection well, cleaning mechanism includes and follows the ditch length direction slides and sets up clean square tube, vertical wearing to locate clean the square tube bottom clean the nest plate, a plurality of vertical be fixed in clean the nest plate bottom clean collude claw and a plurality of fixed connection in clean the nest plate top surface with clean compression spring between the square tube interior top surface, clean the lateral wall of nest plate both sides with two inside walls one-to-one and laminating mutually of ditch relatively, clean collude claw bottom with the interior bottom surface looks butt of ditch, the drainage passageway is inside be provided with be used for the drive apron mechanism with the whole synchronous motion of cleaning mechanism.

By adopting the technical scheme, the driving mechanism drives the cleaning straight plate to slide along the length direction of the drainage ditch, and the cleaning straight plate drives the cleaning hook claw to clean the garbage on the road surface to the inner side of the garbage collection well, so that the garbage in the drainage channel is collected in a centralized and fixed-point manner to the inside of the garbage collection well, and the cleaning is convenient for staff; meanwhile, the bottom end of the cleaning hook claw is abutted against the inner bottom surface of the drainage ditch through the abutting action of the compression spring, so that the inner bottom surface of the drainage ditch can be cleaner.

Optionally, the actuating mechanism include two rotate install in concrete enclose keep off the top be close to the regional screw thread stock of detention pond, vertical be fixed in the drive straight-bar is close to the drive rack of the lateral wall of screw thread stock and set up in the concrete enclose keep off the top surface be used for the drive screw thread stock with drive rack synchronous motion's synchronization component, same two screw thread stock of escape canal follow escape canal length direction sets up and is symmetrical, a plurality of the square cylinder top surface of cleaning all is fixed with cleans straight board, the same one side of escape canal clean straight board threaded connection in same screw thread stock week side.

Through adopting above-mentioned technical scheme, the drive straight-bar drives the vertical upward slip of drive rack through the inflation of drive gasbag, and the drive rack passes through the synchronization part and drives the screw thread stock rotation, and the screw thread stock passes through with clean straight board threaded connection to this realizes that the screw thread stock drives a plurality of and cleans and colludes claw synchronous movement.

Optionally, the synchronization part includes rotate install in rotatory straight-bar of concrete enclosure top surface, be fixed in rotatory straight-bar is close to the drive gear of the tip of drive rack and be fixed in respectively coaxial the rotation straight-bar with the bevel gear of the tip that the screw thread stock is close to mutually, drive gear with drive rack meshes mutually, two bevel gears mesh mutually and set up.

Through adopting above-mentioned technical scheme, the drive rack on drive straight-bar surface drives rotatory straight-bar through drive gear and rotates, thereby rotatory straight-bar drives the long pole rotation of screw thread through the relation that two bevel gears meshed.

Optionally, the detention pond area is provided with a water storage mechanism for storing excessive filtered water, the water storage mechanism comprises a filtered water storage well vertically arranged on the surface of the detention pond area and a storage well cover covering an opening at the top end of the filtered water storage well, the top end of the filtered water storage well exceeds the detention pond area, and the heights of the top end of the filtered water storage well and the surface of the detention pond area are lower than those of the top surface of the concrete enclosure and the surface of the detention pond area; and a plurality of wellhead through grooves are formed in the side walls around the storage well lid.

By adopting the technical scheme, when the detention pool area reaches the absorption limit, excessive filtered water gradually overflows the surface of the turf covering layer, and then flows into the filtered water storage well through the well mouth through grooves on the side walls around the storage well lid, and the excessive filtered water is stored into the filtered water storage well; the storage well lid is used for avoiding evaporation of filtered water in the filtered water storage well in a high-heat state as much as possible.

Optionally, the detention pond area is including burying underground be used for rainwater filterable gravel drainage layer, shop in gravel drainage layer top surface is used for rainwater absorbing sponge filling layer, shop in sponge filling layer top surface is used for planting green planting the planting soil layer and shop in planting soil layer top surface is used for avoiding soil moisture evaporation's turf overburden as far as possible.

By adopting the technical scheme, the filtered water in the water collecting groove flows to the detention pond area through the water drainage ditch, the filtered water firstly irrigates turf planted by the turf cover layer, then irrigates green plants planted by the planting soil layer, flows to the sponge filling layer for storage, and after the sponge filling layer is saturated with water absorption, the filtered water uniformly flows to the deep part of the ground bottom through the gravel drainage layer; when the surface of the hot earth is arid, the filtered water stored in the sponge filling layer flows to the planting soil layer and the turf covering layer, so that the turf planted by the turf covering layer and the green plant planted by the planting soil layer can be fully absorbed by a water source.

Optionally, all vertical wears to be equipped with the cotton line that absorbs water of wall of a well around the drainage storage well, the tip of cotton line one end that absorbs water passes through drainage through-hole extends to the drainage storage well inner bottom surface, the tip of the cotton line other end that absorbs water penetrates inside the sponge filling layer.

Through adopting above-mentioned technical scheme, the inside filtered water of drainage storage well flows to sponge water-absorbing layer, planting soil layer and turf overburden through the cotton thread that absorbs water to irrigate turf that the turf overburden was planted and plant the green planting that the soil layer was planted.

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

1. the rainwater in stormy weather flushes the road surface, the rainwater can be mixed with the garbage and sediment on the road surface and flow into the drainage channel, at the moment, the sewage and the garbage flow to the water filtering mechanism through the drainage channel, the sewage on the road surface flows to the detention pool area through the water draining channel after being filtered by the water filtering mechanism, and the garbage on the road surface is blocked to the outer side of the water draining channel by the water filtering mechanism, so that the garbage and the sediment on the road surface are prevented from flowing into the detention pool area;

2. sewage flows to the filter cotton layer plate through the inclined inner bottom surface of the drainage channel, and flows to the water collecting groove after being filtered by the filter cotton layer plate, so that sediment mixed with the road surface by rainwater is prevented from flowing to the detention pond area as much as possible, and the sediment is filled in a gap of the soil layer of the detention pond area, so that the rainwater cannot permeate into the soil layer of the detention pond area; the staff can detach the filter cotton laminate from the drainage channel for cleaning and reuse;

3. the cover panel blocks the opening at the top end of the garbage collection well through the waterproof piston so as to prevent rainwater from flowing into the garbage collection well as much as possible; when garbage collection is needed, a worker drives the waterproof piston to vertically upwards separate from the opening at the top end of the garbage collection well through the synchronous mechanism, so that the working efficiency of the worker is improved.

Drawings

Fig. 1 is a schematic structural view of an embodiment of the present utility model.

FIG. 2 is a schematic diagram of the structure of the retention pond area in an embodiment of the present utility model.

FIG. 3 is a schematic view of a concrete enclosure removed in accordance with an embodiment of the utility model.

Fig. 4 is an enlarged schematic view of the portion a in fig. 3.

Fig. 5 is an enlarged schematic view of a portion B in fig. 3.

Fig. 6 is a schematic view of the structure of the inside of the cleaning sleeve.

Reference numerals: 11. a detention pool area; 12. a concrete enclosure; 13. a gravel drainage layer; 14. a sponge filling layer; 15. planting a soil layer; 16. a turf cover layer; 17. a filtered water storage well; 18. a water filtering through hole; 19. a water-absorbing cotton thread; 20. storing the well lid; 21. a well mouth is communicated with a groove; 22. a drainage channel; 23. a drainage ditch; 24. a water collecting groove; 25. a drain trench; 26. a filtering structure; 27. a guide rail slide; 28. a filter cotton laminate; 29. dovetail grooves; 30. dovetail strips; 31. a garbage collection well; 32. a cover panel; 33. a waterproof piston; 34. a guide groove; 35. driving a straight rod; 36. driving the air bag; 39. a guide straight rod; 40. a support ring; 41. supporting a straight rod; 42. a threaded long rod; 43. a limit circular ring; 44. limiting straight rods; 45. a drive rack; 46. a supporting cross plate; 47. supporting a vertical plate; 48. a riser through hole; 49. rotating the straight rod; 50. a drive gear; 51. bevel gears; 52. cleaning a straight plate; 53. a threaded through hole; 54. a guide through hole; 55. cleaning the square cylinder; 56. cleaning a sleeve plate; 57. a compression spring; 58. cleaning a hook claw; 59. and the cover plate is blocked.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-6.

The embodiment of the utility model discloses a sponge detention pond. Referring to fig. 1 and 2, the sponge detention pond includes a detention pond area 11 and a concrete enclosure 12 poured around the periphery of the detention pond area 11, the detention pond area 11 is a low-lying area compared to the ground plane, so that rainwater on the ground plane flows into the detention pond area 11. The detention pond area 11 includes the gravel drainage layer 13 that is used for rainwater filtration that buries in the bottom, lays in gravel drainage layer 13 top surface and is used for rainwater absorbing sponge filling layer 14, lays in sponge filling layer 14 top surface and is used for planting green planting soil layer 15 and lays in planting soil layer 15 top surface and be used for avoiding soil moisture evaporation's turf overburden 16 as far as possible. The concrete encloses fender 12 and is the fender structure of transversal shape of showing back, and detention pond area 11 is located the inboard that the concrete encloses fender 12, and the inside wall around the concrete encloses fender 12 is by last to down towards being close to detention pond area 11 slope setting, and concrete encloses fender 12 top surface and earth's surface plane and flushes.

Referring to fig. 1 and 2, the surface of the detention pond area 11 is vertically provided with a drainage storage well 17 at positions close to four top angles of the surface, the top end of the drainage storage well 17 exceeds the detention pond area 11, and the heights of the top end of the drainage storage well 17 and the surface of the detention pond area 11 are lower than the heights of the top surface of the concrete enclosure 12 and the surface of the detention pond area 11. The walls of the periphery of the drainage storage well 17 are vertically provided with a plurality of drainage through holes 18, and the drainage storage well 17 is penetrated with a water absorption cotton thread 19 through the drainage through holes 18. The end part of one end of the water absorption cotton thread 19 extends to the inner bottom surface of the filtered water storage well 17 through the filtered water through hole 18, and the end part of the other end of the water absorption cotton thread 19 penetrates into the sponge filling layer 14, so that the filtered water storage well 17 is a green plant supplementing water source through the water absorption cotton thread 19. The top end of the drainage storage well 17 is fixed with a storage well cover 20 with a long strip-shaped longitudinal section, and the storage well cover 20 is a hollow box body structure with an opening at the bottom. The side walls around the storage well cover 20 are provided with a plurality of well head through grooves 21, and the well head through grooves 21, the inside of the storage well cover 20 and the inside of the drainage storage well 17 are communicated.

Referring to fig. 1 and 3, a drainage channel 22 with a cross section in a shape like a Chinese character 'hui' is formed on the top surface of the concrete enclosure 12, and the drainage channel 22 is a ditch structure formed by enclosing four drainage ditches 23. The central position of the inner bottom surface of the drainage ditch 23 is provided with a water collecting groove 24 with a rectangular cross section, and the inner bottom surface of the drainage ditch 23 is obliquely arranged towards the water collecting groove 24 from top to bottom, so that rainwater can quickly flow to the water collecting groove 24 through the inner bottom surface of the drainage ditch 23. The water drain ditches 25 are formed in the inner side walls around the concrete enclosure 12, the four water collecting grooves 24 are in one-to-one correspondence with the four water drain ditches 25 and are communicated with the detention pond area 11, a blocking cover plate 59 is fixedly connected between the two opposite inner side walls at the top of the water drain ditch 23, and the blocking cover plate 59 is located at a position right above the water collecting grooves 24.

Referring to fig. 3 and 4, the inner bottom surface of the drain 23 is provided with two filtering structures 26 for filtering rainwater along its length direction, and the two filtering structures 26 are respectively located at two sides of the water collecting groove 24. The filter structure 26 includes guide rail slides 27 vertically fixed to two opposite inner side walls of the drain 23 and a filter cotton laminate 28 vertically slidably disposed between the two guide rail slides 27, the filter cotton laminate 28 being a flat plate structure composed of filter cotton. The side walls of the two guide rail sliding strips 27, which are close to each other, are vertically provided with dovetail grooves 29 penetrating through the top surface, and the dovetail grooves 29 are groove structures with dovetail cross sections; dovetail strips 30 are vertically fixed on two sides of the filter cotton laminate 28, and the dovetail strips 30 are of a strip structure with a dovetail-shaped cross section. Dovetail strip 30 is inserted into guide rail slide 27 through dovetail groove 29 to realize that filter cotton layer board 28 can be dismantled in escape canal 23.

Referring to fig. 1 and 3, four top corners of the inner bottom surface of the drainage channel 22 are vertically provided with a garbage collection well 31, and an opening at the top end of the garbage collection well 31 is covered with a cover panel 32. The waterproof piston 33 is fixed on the bottom surface of the cover panel 32, the waterproof piston 33 extends into the garbage collection well 31 through an opening at the top end of the garbage collection well 31, and the outer side walls around the waterproof piston 33 are in one-to-one correspondence with and are abutted against the inner side walls around the garbage collection well 31. The inner bottom surface of the drainage channel 22 is vertically provided with a guide groove 34 at the periphery of the top corner of the garbage collection well 31, which is close to the detention pond area 11. The drainage channel 22 vertically passes through the guide groove 34 and is provided with a driving straight rod 35, a driving air bag 36 is fixedly connected between the bottom end of the driving straight rod 35 and the inner bottom surface of the guide groove 34, and the top end of the driving straight rod 35 is fixed on the bottom surface of the cover panel 32. An air duct is fixedly connected between the driving air bags 36 of the two adjacent garbage collection wells 31, a switch valve for controlling the dredging or blocking of the air is fixedly arranged in the center of the air duct, and the air duct can be communicated with the electric air pump through the switch valve.

Referring to fig. 3-5, a guide straight rod 39 is arranged at a position above the concrete enclosure 12 far from the detention pond area 11 along the length direction of the drainage ditch 23, two supporting rings 40 are coaxially fixed on the periphery of the guide straight rod 39, the two supporting rings 40 are oppositely arranged and are positioned between the two cotton filtering laminate plates 28, and a supporting straight rod 41 is fixedly connected between the outer periphery of the supporting rings 40 and the top surface of the concrete enclosure 12. Two threaded long rods 42 are arranged above the concrete enclosure 12 and close to the detention pond area 11 along the length direction of the drainage ditch 23, and the two threaded long rods 42 of the same drainage ditch 23 are symmetrical. The end parts of the two threaded long rods 42, which are close to each other, are coaxially sleeved with limiting rings 43, and the two limiting rings 43 are oppositely arranged and are positioned between the two cotton filtering laminate plates 28. A bearing is arranged between the inner peripheral surface of the limiting circular ring 43 and the outer peripheral surface of the long threaded rod 42, so that the long threaded rod 42 is rotatably arranged on the inner side of the limiting circular ring 43, and a limiting straight rod 44 is fixedly connected between the outer peripheral surface of the limiting circular ring 43 and the top surface of the concrete enclosure 12.

Referring to fig. 3-5, the side walls of the driving straight rods 35, which are close to the threaded long rods 42, are vertically fixed with driving racks 45, the top surface of the concrete enclosure 12, which is close to the detention pond area 11, is horizontally fixed with supporting transverse plates 46, the end parts, which are far away from the detention pond area 11, of the supporting transverse plates 46 are vertically fixed with supporting vertical plates 47, vertical plate through holes 48 are formed in the surfaces of the supporting vertical plates 47, the supporting vertical plates 47 are penetrated with rotating straight rods 49 through the vertical plate through holes 48, the end parts, which are close to the driving racks 45, of the rotating straight rods 49 are coaxially fixed with driving gears 50, and the driving gears 50 are meshed with the driving racks 45; bevel gears 51 are coaxially fixed at the end of the rotary straight rod 49, which is close to the threaded long rod 42, and the two bevel gears 51 are meshed.

Referring to fig. 4 and 6, the cleaning straight plates 52 are provided on the inner bottom surface of the drain 23 in the width direction thereof, and two cleaning straight plates 52 are provided in the length direction of the drain 23. Two cleaning straight plates 52 in the same drainage ditch 23 are in one-to-one correspondence with the two threaded long rods 42, the cleaning straight plates 52 are provided with threaded through holes 53 penetrating through the surfaces of the cleaning straight plates, and the cleaning straight plates 52 are in threaded connection with the corresponding threaded long rods 42 through the threaded through holes 53. The cleaning straight plates 52 are provided with guide through holes 54 penetrating through the surfaces, and the two cleaning straight plates 52 are sleeved on the periphery of the guide straight rod 39 through the guide through holes 54.

Referring to fig. 3 and 6, a cleaning square tube 55 is fixedly mounted at the bottom of the cleaning straight plate 52, and the cleaning square tube 55 has a hollow box structure with an opening at the bottom and a rectangular parallelepiped shape. The cleaning sleeve plate 56 vertically penetrates through the opening at the bottom of the cleaning square cylinder 55, a compression spring 57 is fixedly connected between the top surface of the cleaning sleeve plate 56 and the inner top surface of the cleaning square cylinder 55, and two compression springs 57 are arranged along the width direction of the cleaning sleeve plate 56. The side walls on two sides of the cleaning sleeve plate 56 are in one-to-one correspondence with two opposite inner side walls of the drainage ditch 23 and are attached to each other, the cleaning hook claws 58 are vertically fixed at the bottom of the cleaning sleeve plate 56, a plurality of cleaning hook claws 58 are arranged along the width direction of the cleaning sleeve plate 56, and the bottom ends of the cleaning hook claws 58 are abutted to the inner bottom surface of the drainage ditch 23.

The implementation principle of the sponge detention pond provided by the embodiment of the utility model is as follows: stormwater in stormwater, which is present in the road, flushes the road, and the dirt and sand on the road are carried into the drainage channel 22. The sewage and the garbage flow to the filter cotton layer plate 28 through the inclined inner bottom surface of the drainage channel 22, the sewage flows to the water collecting groove 24 after being filtered by the filter cotton layer plate 28, and the garbage on the road surface is blocked to the outer side of the water collecting groove 24 by the cleaning square cylinder 55 and the cleaning sleeve plate 56. The filtered water in the water collecting groove 24 flows to the detention pond area 11 through the water drain canal 25, the filtered water firstly irrigates the turf planted by the turf cover layer 16, then irrigates the green planted by the planting soil layer 15, then flows to the sponge filling layer 14 for storage, and after the sponge filling layer 14 is saturated by water absorption, the filtered water uniformly flows to the deep of the ground through the gravel drainage layer 13. When the detention pond area 11 reaches the absorption limit, excessive filtered water gradually overflows the surface of the turf cover layer 16, and then flows into the filtered water storage well 17 through the wellhead through grooves 21 on the side walls around the storage well lid 20, and the excessive filtered water is stored into the filtered water storage well 17.

When the garbage on the road surface is fully piled up in the drainage channel 22, a worker is communicated with the ventilation catheter through the electric air pump, the switch valve at the end part of the ventilation catheter is manually opened, then air flows into the driving air bag 36, the driving straight rod 35 vertically pushes out the cover panel 32 upwards through the expansion of the driving air bag 36, the cover panel 32 drives the waterproof piston 33 to vertically upwards separate from the opening at the top end of the garbage collection well 31 through the driving straight rod 35, and accordingly the opening at the top end of the garbage collection well 31 is opened through the electric air pump. The driving rack 45 on the surface of the driving straight rod 35 drives the rotating straight rod 49 to rotate through the driving gear 50, the rotating straight rod 49 drives the threaded long rod 42 to rotate through the meshing relationship of the two bevel gears 51, the threaded long rod 42 drives the cleaning straight plate 52 to slide along the length direction of the drainage ditch 23, and the cleaning straight plate 52 drives the cleaning hook claw 58 to clean the garbage on the road surface to the inner side of the garbage collection well 31, so that the garbage inside the drainage channel 22 is collected to the inside of the garbage collection well 31 at a centralized fixed point, and the cleaning is convenient for staff.

In the drought of the hot earth surface, the filtered water stored in the sponge filling layer 14 flows to the planting soil layer 15 and the turf covering layer 16, so that the turf planted by the turf covering layer 16 and the green plants planted by the planting soil layer 15 can be fully absorbed by water sources. At the same time, the filtered water in the filtered water storage well 17 flows through the water absorbing cotton thread 19 to the sponge water absorbing layer, the planting soil layer 15 and the turf cover layer 16, thereby irrigating the turf planted by the turf cover layer 16 and the green plants planted by the planting soil layer 15. The purpose of the storage well lid 20 is to avoid evaporation of filtered water in the filtered water storage well 17 in the hot state as much as possible. The operator may remove the cotton wool deck 28 from the interior of the drain 22 for cleaning.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. A sponge detention pond comprising a detention pond area (11), characterized in that: the drainage device is characterized by further comprising a concrete enclosing block (12) which is poured at the periphery of the detention pool area (11), wherein a drainage channel (22) is formed in the top surface of the concrete enclosing block (12), the drainage channel (22) is formed by enclosing four drainage ditches (23), drainage ditches (25) are formed in the inner side walls of the periphery of the concrete enclosing block (12), the drainage channel (22) is communicated with the detention pool area (11) through the drainage ditches (25), a water filtering mechanism used for filtering rainwater is arranged at the inner bottom surface of the drainage ditches (23), and a plurality of water filtering mechanisms are arranged at the two sides of the drainage ditches (25); four vertex angles of the inner bottom surface of the drainage channel (22) are vertically provided with a garbage collection well (31), the top of the garbage collection well (31) is provided with a cover plate mechanism for covering an opening at the top end of the garbage collection well (31), the cover plate mechanism comprises a cover plate (32) covering the opening at the top end of the garbage collection well (31) and a waterproof piston (33) fixed on the bottom surface of the cover plate (32), the waterproof piston (33) extends to the inside of the garbage collection well (31) through the opening at the top end of the garbage collection well (31), the outer side walls around the waterproof piston (33) are in one-to-one correspondence with and are abutted against the inner side walls around the garbage collection well (31), and a synchronous mechanism for driving the four cover plate mechanisms to integrally and synchronously move is arranged in the drainage channel (22). A guide groove (34) is vertically formed in the inner bottom surface of the drainage channel (22) near the top angle of the garbage collection well (31), the synchronous mechanism comprises a driving straight rod (35) vertically penetrating through the guide groove (34) and arranged in the drainage channel (22), a driving air bag (36) fixedly connected between the bottom end of the driving straight rod (35) and the inner bottom surface of the guide groove (34), and a ventilation catheter fixedly connected between two adjacent driving air bags (36), the top end of the driving straight rod (35) is fixed on the bottom surface of the covering panel (32), and a switch valve is arranged on the periphery of the ventilation catheter; the garbage collection device is characterized in that a cleaning mechanism used for cleaning garbage to the inside of the garbage collection well (31) is arranged in the drainage channel (22), the cleaning mechanism comprises a cleaning square cylinder (55) which is arranged in a sliding mode along the length direction of the drainage ditch (23), a cleaning sleeve plate (56) which vertically penetrates through the bottom of the cleaning square cylinder (55), a plurality of cleaning hook claws (58) which are vertically fixed to the bottom of the cleaning sleeve plate (56) and a plurality of compression springs (57) which are fixedly connected between the top surface of the cleaning sleeve plate (56) and the inner top surface of the cleaning square cylinder (55), side walls on two sides of the cleaning sleeve plate (56) are in one-to-one correspondence with and are attached to two opposite inner side walls of the drainage ditch (23), the bottom end of the cleaning hook claw (58) is in butt joint with the inner bottom surface of the drainage ditch (23), and a driving mechanism used for driving the cover plate mechanism and the cleaning mechanism to integrally and synchronously move is arranged in the drainage channel (22). The driving mechanism comprises two threaded long rods (42) which rotate above the concrete enclosure (12) and are close to the detention pond area (11), a driving rack (45) which is vertically fixed on the driving straight rod (35) and is close to the side wall of the threaded long rods (42), and a synchronous component which is arranged on the top surface of the concrete enclosure (12) and is used for driving the threaded long rods (42) and the driving rack (45) to synchronously move, wherein the two threaded long rods (42) of the same drainage ditch (23) are symmetrically arranged along the length direction of the drainage ditch (23), a plurality of cleaning square cylinders (55) are respectively fixed with a cleaning straight plate (52), and the cleaning straight plates (52) on the same side of the drainage ditch (25) are in threaded connection with the same circumference of the threaded long rods (42); the synchronous component comprises a rotary straight rod (49) rotatably arranged on the top surface of the concrete enclosure (12), a driving gear (50) fixed on the end part of the rotary straight rod (49) close to the driving rack (45) and bevel gears (51) respectively coaxially fixed on the end parts of the rotary straight rod (49) close to the threaded long rods (42), wherein the driving gear (50) is meshed with the driving rack (45), and the two bevel gears (51) are meshed.

2. A sponge retention sink as claimed in claim 1, wherein: the drainage mechanism comprises guide rail sliding strips (27) vertically fixed on two opposite inner side walls of the drainage ditch (23) and a filter cotton laminate (28) vertically sliding between the guide rail sliding strips (27), dovetail grooves (29) are vertically formed in the side walls, close to the guide rail sliding strips (27), of the filter cotton laminate (28), dovetail strips (30) are vertically fixed on two sides of the filter cotton laminate (28), and the dovetail strips (30) are inserted into the guide rail sliding strips (27) through the dovetail grooves (29).

3. A sponge retention sink as claimed in claim 1, wherein: the detention pond area (11) is provided with a water storage mechanism for storing excessive filtered water, the water storage mechanism comprises a filtered water storage well (17) vertically arranged on the surface of the detention pond area (11) and a storage well cover (20) covering an opening at the top end of the filtered water storage well (17), the top end of the filtered water storage well (17) exceeds the detention pond area (11), and the heights of the top end of the filtered water storage well (17) and the surface of the detention pond area (11) are lower than the heights of the top surface of the concrete enclosure (12) and the surface of the detention pond area (11); and a plurality of wellhead through grooves (21) are formed in the side walls around the storage well cover (20).

4. A sponge retention pond according to claim 3, wherein: the detention pond area (11) include bury underground and be used for rainwater filterable gravel drainage layer (13), shop in gravel drainage layer (13) top surface be used for rainwater absorbing sponge filling layer (14), shop in sponge filling layer (14) top surface be used for planting green planting plant soil layer (15) and shop in plant soil layer (15) top surface be used for avoiding soil moisture evaporation's turf overburden (16) as far as possible.

5. A sponge retention sink as claimed in claim 4, wherein: the water-absorbing cotton threads (19) vertically penetrate through the walls of the periphery of the water-filtering storage well (17), the end parts of one end of the water-absorbing cotton threads (19) extend to the inner bottom surface of the water-filtering storage well (17), and the end parts of the other end of the water-absorbing cotton threads (19) penetrate into the sponge filling layer (14).