A sponge city green belt and drainage system

Abstract

The present application relates to the field of urban construction, in particular to a sponge city green belt and drainage system, the sponge city green belt comprising: a planting belt, the planting belt comprising a concrete layer fixed on a road surface, a planting layer laid on the concrete layer for planting green plants; a water reservoir, opened below the road surface and below the planting belt; an underground pipeline, fixedly arranged below the water reservoir and connected to a sewer; a connecting pipe and absorbent cotton fixedly arranged in the planting belt, the lower ends of the connecting pipe and the absorbent cotton extending to the water reservoir, the upper ends of the connecting pipe extending upwardly above the planting layer, the upper ends of the absorbent cotton extending upwardly into the planting layer, a drainage pipe being connected between the water reservoir and the underground pipeline, a valve being arranged in the drainage pipe, a connecting pipe and absorbent cotton being arranged between the water reservoir and the planting belt, so that in rainy seasons, excess rainwater can be stored in the water reservoir, and in less rainy seasons, the water in the water reservoir can be directly used, thereby improving the flexibility of the green belt in water resource utilization.

Description

Technical Field

[0001] The present application relates to the field of urban construction, and in particular to a sponge city green belt and drainage system. Background Art

[0002] A sponge city refers to a city that can adapt to environmental changes and respond to natural disasters like a sponge, with good "elasticity". It absorbs, stores, infiltrates and purifies water when it rains, and releases and utilizes the stored water when needed.

[0003] Green belts are an important part of sponge city construction. Although the existing green belts can absorb and store water well in rainy seasons and reduce urban waterlogging, the water resources in the green belts are difficult to be used quickly and effectively in the dry season, and the green belts have poor flexibility in water resource utilization. Summary of the invention

[0004] In order to solve the problem of poor flexibility of green belts in water resource utilization, the present application provides a sponge city green belt and drainage system.

[0005] The sponge city green belt provided in this application adopts the following technical solution:

[0006] A sponge city green belt, comprising: a planting belt, the planting belt comprising a concrete layer fixed on a road surface, and a planting layer laid on the concrete layer for planting green plants; a water reservoir, opened below the road surface and below the planting belt; an underground pipeline, fixedly arranged below the water reservoir and connected to a sewer; a connecting pipe and absorbent cotton are fixedly arranged in the planting belt, the lower ends of the connecting pipe and the absorbent cotton extend to the water reservoir, the upper end of the connecting pipe extends upward to above the planting layer, the upper end of the absorbent cotton extends upward to the planting layer, a drainage pipe is connected between the water reservoir and the underground pipeline, and a valve is provided in the drainage pipe.

[0007] By adopting the above technical scheme, the plants in the planting belt can absorb rainwater during the rainy season, reducing the usual water for irrigation; when there is too much rain in the planting belt, the rainwater can flow into the reservoir through the connecting pipe for storage and backup; when there is too much water stored in the reservoir, the valve can be opened and the water in the reservoir can be discharged into the underground pipe through the drain pipe, and then discharged to lakes, rivers, etc. through the sewer, so as to ensure full utilization of rainwater while reducing the occurrence of waterlogging; in the dry season, the planting layer in the planting belt absorbs the backup water in the reservoir through absorbent cotton, which can also reduce the usual water for irrigation. The backup water in the reservoir can be directly extracted and utilized through the connecting pipe, thereby improving the flexible utilization of water resources by the green belt.

[0008] Further preferably, a planting groove with an opening facing upward is opened in the concrete layer, and the planting layer is arranged in the planting groove.

[0009] By adopting the above technical solution, planting troughs are set up and the top surface of the planting layer is made lower than the groove of the planting trough, so as to avoid the soil in the planting layer overflowing from the planting trough with rainwater and flowing to the outside of the green belt during the rainy season, affecting pedestrians and vehicles on the road.

[0010] Further preferably, the top end of the connecting pipe is detachably connected to a manhole cover.

[0011] By adopting the above technical solution, the manhole cover installed on the connecting pipe can reduce the soil from entering the connecting pipe and causing blockage, and can also eliminate the hidden danger of people falling; after the manhole cover is removed from the connecting pipe, the water pipes of the pump and the like can be extended into the water reservoir through the connecting pipe, which is convenient for direct water pumping.

[0012] The drainage system provided in this application adopts the following technical solution:

[0013] A drainage system includes a drainage ditch opened below the road surface and the sponge city green belt as described above, a baffle is hinged at the bottom of the concrete layer, a rotation damper is fixedly connected between the baffle and the concrete layer, the baffle is located between the drainage ditch and the water reservoir, and the drainage ditch and the water reservoir can be blocked or connected by rotating the baffle.

[0014] By adopting the above technical solution, the water flow in the drainage ditch will exert pressure on the baffle. When the pressure can overcome the pressure of the water in the reservoir on the baffle and the elastic force of the rotational damping, the water in the drainage ditch will push the baffle to rotate. This indicates that the water flow in the drainage ditch is too large and there is a tendency of waterlogging on the road surface. At this time, the baffle is pushed to rotate under the action of the water flow pressure and the drainage ditch is connected to the reservoir, so that part of the water in the drainage ditch flows into the reservoir, and the drainage pressure of the drainage ditch is shared by the reservoir, thereby ensuring the drainage function of the drainage system.

[0015] It is further preferred that a mounting groove is provided through the baffle, and an inner plate is rotatably provided in the mounting groove, and the drainage ditch and the water reservoir can be blocked or connected by the rotation of the inner plate.

[0016] By adopting the above technical scheme, when normal drainage is carried out in the drainage ditch, the water flow with normal flow rate exerts pressure on the inner plate, overcomes the pressure of the water in the reservoir on the inner plate and pushes the inner plate to rotate, so that the drainage ditch is connected with the reservoir, so that part of the water in the drainage ditch flows into the reservoir as a backup. When the pressure of the water in the drainage ditch on the inner plate is not sufficient to overcome the pressure of the water in the reservoir on the inner plate and push the inner plate to rotate, the inner plate blocks the drainage ditch and the reservoir, so that the water in the drainage ditch can no longer flow into the reservoir, so that the reservoir has a certain overflow margin to share the drainage pressure of the drainage ditch during waterlogging.

[0017] Further preferably, a limit bar is fixedly provided in the installation groove, and the limit bar is used to prevent the inner plate from rotating toward the drainage ditch side.

[0018] By adopting the above technical solution, a limit plate is set to prevent the inner plate from rotating toward one side of the drain ditch. When there is no water flow in the drain ditch, even if the water in the reservoir exerts pressure on the inner plate, the inner plate will not rotate, thereby preventing the water in the reservoir from flowing into the drain ditch and causing water loss.

[0019] Further preferably, a vertical groove is provided at the bottom of the drainage ditch, the underground pipe is connected to the vertical groove, a lifting plate is provided in the vertical groove for sliding up and down, an elastic part is fixedly connected between the bottom of the lifting plate and the bottom wall of the vertical groove, the vertical groove and the underground pipe are blocked or connected by the lifting and sliding of the lifting plate, a bayonet is provided on the lifting plate, and a clamping strip is fixedly provided on the baffle plate, and when the baffle plate blocks the drainage ditch and the water reservoir, the clamping strip can be clamped in the bayonet.

[0020] By adopting the above technical solution, when the water flow in the drainage ditch drives the baffle to rotate, the card strip disengages from the card slot, and the lifting plate slides downward under the action of the elastic member, so that the vertical groove is connected with the underground pipeline. At this time, the water in the drainage ditch can flow directly into the underground pipeline through the vertical groove for drainage, further sharing the drainage pressure of the drainage ditch and ensuring the drainage effect.

[0021] Further preferably, a hook is fixedly provided on the top of the lifting plate.

[0022] By adopting the above technical solution, the lifting plate can be pulled upward by manually or using a tool to hook the hook. In the process of pulling the lifting plate, the baffle plate needs to be pushed to rotate to prevent the card bar from hindering the lifting plate from rising. After the lifting plate rises into place, the baffle plate is released. At this time, the card bar on the baffle plate is re-engaged in the card slot to complete the reset. The operation is simple, convenient and fast.

[0023] Further preferably, a grating is detachably installed on the top of the drainage ditch.

[0024] By adopting the above technical solution, the grating can reduce the situation where debris and garbage enter the drainage ditch and cause blockage, and the grating can be detachably installed, which is also convenient for cleaning the garbage that falls into the drainage ditch.

[0025] Further preferably, the grid is L-shaped.

[0026] By adopting the above technical solution, when manually resetting the lifting plate with a tool, the tool passes through the lifting plate and hooks the hook, and the L-shaped setting gives the tool a larger operating space and also facilitates pushing the baffle to prevent the card strip on the baffle from hindering the resetting.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. In this application, a connecting pipe and absorbent cotton are set between the water reservoir and the planting belt, which is convenient for storing excess rainwater in the water reservoir in the rainy season, and directly using the water in the water reservoir in the dry season, thereby improving the flexibility of the green belt in the use of water resources. In addition, the water reservoir and the underground pipeline are connected by a drainage pipe and a valve to reduce the occurrence of waterlogging in the green belt;

[0029] 2. In a further configuration of the present application, in the drainage system, the baffle is driven to rotate under the water flow pressure of the drainage ditch and the drainage ditch is connected to the water reservoir, so that part of the water in the drainage ditch flows into the water reservoir, and the drainage pressure of the drainage ditch is shared by the water reservoir, thereby ensuring the drainage function of the drainage system;

[0030] 3. In a further configuration of the present application, when the water flow in the drainage ditch drives the baffle to rotate, the card strip disengages from the card slot, and the lifting plate slides downward under the action of the elastic member, so that the vertical groove is connected with the underground pipe. At this time, the water in the drainage ditch can flow directly into the underground pipe through the vertical groove for drainage, further sharing the drainage pressure of the drainage ditch and ensuring the drainage effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a cross-section of a sponge city green belt;

[0032] Figure 2 It is a cross-sectional view of a drainage system;

[0033] Figure 3 yes Figure 2 A is an enlarged schematic diagram;

[0034] Figure 4 yes Figure 2 Schematic diagram of the state of the middle baffle rotating;

[0035] Figure 5 yes Figure 2 Schematic diagram of the state of the inner plate rotating.

[0036] Explanation of the reference numerals: 1. Planting belt; 11. Concrete layer; 111. Planting trough; 12. Planting layer; 13. Connecting pipe; 14. Water-absorbing cotton; 15. Manhole cover; 2. Reservoir; 21. Drain pipe; 22. Valve; 3. Underground pipeline; 4. Drain ditch; 5. Grating; 6. Baffle; 61. Mounting groove; 62. Inner plate; 63. Limiting strip; 64. Card strip; 8. Vertical groove; 9. Lifting plate; 91. Bayonet; 92. Hook; 10. Elastic member. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1 -Attached Figure 5 This application is described in further detail.

[0038] The present application discloses a sponge city green belt, and specifically discloses the following embodiments:

[0039] As attached Figure 1 As shown, the sponge city green belt includes a planting belt 1, a reservoir 2 and an underground pipeline 3 arranged in sequence from top to bottom, wherein the planting belt 1 is arranged above the road surface, the reservoir 2 and the underground pipeline 3 are both arranged below the road surface, and the underground pipeline 3 is connected to an underground sewer (not shown). In this embodiment, both the front and rear ends of the underground pipeline 3 can be connected to the sewer.

[0040] Specifically, the planting belt 1 includes a concrete layer 11 fixed on the road surface, a planting layer 12 laid on the concrete layer 11 for planting green plants, and a connecting pipe 13 and absorbent cotton 14 are fixed in the planting belt 1. The connecting pipe 13 and the absorbent cotton 14 are both vertically arranged, and the lower ends of the connecting pipe 13 and the absorbent cotton 14 extend into the water reservoir 2, the upper end of the connecting pipe 13 extends upward to above the planting layer 12, and the upper end of the absorbent cotton 14 extends upward to the planting layer 12.

[0041] Generally, the planting layer 12 includes a soil layer, a gravel layer, etc., and a suitable planting layer 12 is selected according to the type of green plants to be planted. In rainy seasons, the soil in the planting layer 12 will absorb rainwater for the growth of green plants, thereby reducing the usual water for irrigation and saving water resources; if the rainwater in the planting layer 12 overflows the planting layer 12, the water will flow to the reservoir 2 through the connecting pipe 13 for storage and standby, thereby making full use of rainwater resources; in the less rainy season, the planting layer 12 absorbs the water in the reservoir 2 through the absorbent cotton 14, which can also reduce the water for irrigation. In this embodiment, the upper end of the connecting pipe 13 is flush with the upper end of the planting layer 12, which can play a certain concealing role and is beautiful. The upper end of the absorbent cotton 14 is also flush with the upper end of the planting layer 12. In the process of the absorbent cotton 14 absorbing and transferring the water in the reservoir 2 to the planting layer 12, a certain amount of water can be transferred to different depth positions of the planting layer 12, so that the distribution of water in the planting layer 12 is as uniform as possible.

[0042] When direct water is needed, such as for road cleaning, fire fighting, etc., the water pipe of the pump can be extended into the reservoir 2 through the connecting pipe 13 to directly extract water for use, which is convenient and quick, thereby improving the flexibility of water resource utilization in the green belt.

[0043] A drain pipe 21 is connected between the water reservoir 2 and the underground pipeline 3, and a valve 22 is arranged in the drain pipe 21. When there is too much water in the water reservoir 2, the valve 22 can be opened to discharge the water in the water reservoir 2 into the underground pipeline 3 and then into the sewer. In this embodiment, the valve 22 can be a pressure valve, that is, after a certain water level is reached in the water reservoir 2, the water pressure borne by the pressure valve reaches the maximum threshold value, at which time the pressure valve is opened until the water pressure borne by the pressure valve reaches the minimum threshold value, and then the pressure valve is closed. Setting a reasonable pressure valve threshold range can prevent the water in the water reservoir 2 from being too full, causing rainwater to be unable to enter the water reservoir 2 through the connecting pipe 13, and can also ensure that there is a reserve amount of water in the water reservoir 2 for direct use.

[0044] A planting groove 111 with an opening facing upward is opened in the concrete layer 11, and the planting layer 12 is laid in the planting groove 111, and the planting layer 12 is arranged in the planting groove 111, that is, the top surface of the planting layer 12 should be lower than the groove opening of the planting groove 111. When rainwater overflows the planting layer 12, it is prevented that the rainwater drives the sand, gravel, soil, etc. in the planting layer 12 to flow out of the planting groove 111 and flow onto the road surface, affecting the driving of pedestrians and vehicles.

[0045] In addition, the top of the connecting pipe 13 is detachably connected with a manhole cover 15. In normal use, the manhole cover 15 is fixedly connected to the top of the connecting pipe 13, and only a hole for rainwater to pass through is provided on the manhole cover 15. The setting of the manhole cover 15 can prevent a large amount of soil or sand and gravel from falling into the connecting pipe 13, causing the connecting pipe 13 to be blocked. In addition, the manhole cover 15 can also prevent people from falling, ensuring safety. When it is necessary to pump out the water in the water reservoir 2 for use, the manhole cover 15 is removed, so that it is convenient to insert a water pipe into the connecting pipe 13 for pumping water, which is convenient, fast, safe and reliable.

[0046] The present application also discloses a drainage system, and specifically discloses the following embodiments:

[0047] As attached Figure 2 , Attachment Figure 3 As shown, the drainage system includes a drainage ditch 4 opened below the road surface and the above-mentioned sponge city green belt, a baffle 6 is hinged at the bottom of the concrete layer 11, a rotation damper (not shown) is fixedly connected between the baffle 6 and the concrete layer 11, and the baffle 6 is located between the drainage ditch 4 and the water reservoir 2, and the drainage ditch 4 and the water reservoir 2 can be blocked or connected by rotating the baffle 6. Specifically, drainage ditches 4 are arranged on both sides of the concrete layer 11, baffles 6 are arranged between the drainage ditch 4 and the water reservoir 2, the top of the baffle 6 is rotatably connected to the concrete layer 11 through a hinge shaft, and a rotation damper is connected between the front and rear ends of the baffle 6 and the concrete layer 11. In this embodiment, the rotation damper adopts a torsion spring.

[0048] The water in the drainage ditch 4 flows in the front-to-back direction and flows toward lakes, rivers, etc. The water in the drainage ditch 4 mainly comes from the water accumulated on the road surface. If the water flow in the drainage ditch 4 is large, it means that there is too much water accumulated on the road surface, and waterlogging may occur or is about to occur. At this time, under the action of the water pressure in the drainage ditch 4, the baffle 6 will be pushed to rotate and connect the drainage ditch 4 and the water reservoir 2, so that the water in the drainage ditch 4 flows into the water reservoir 2.

[0049] Specifically, the water in the drainage ditch 4 exerts pressure on the baffle 6 and makes the baffle 6 tend to rotate toward the side of the water reservoir 2, and the water in the water reservoir 2 and the rotation damping have a reaction force on the baffle 6. When the pressure of the water in the drainage ditch 4 on the baffle 6 can overcome the pressure of the water in the water reservoir 2 on the baffle 6 and the elastic force of the rotation damping and make the baffle 6 rotate, it indicates that there is a tendency of waterlogging on the road surface. Therefore, the drainage system can automatically connect the drainage ditch 4 and the water reservoir 2 according to the amount of water on the road surface or the size of the water flow in the drainage ditch 4 to share the drainage pressure of the drainage ditch 4. The state of the baffle 6 after rotation is shown in the attached figure. Figure 4 shown.

[0050] It should be noted that, in fact, the water in the drainage ditch 4 needs to overcome the gravity of the baffle 6 to push the baffle 6 to rotate, and the gravity is smaller than the rotation damping and the reaction force of the water in the reservoir 2 and can be ignored.

[0051] In addition, the rotational damping limits the minimum pressure of the water in the gutter 4 to push the baffle 6 to rotate, that is, when the reaction force of the water in the reservoir 2 on the baffle 6 is zero, the pressure of the water in the gutter 4 on the baffle 6 only needs to overcome the rotational damping to push the baffle 6 to rotate.

[0052] When the water flow in the drainage ditch 4 is small, the baffle 6 cannot be driven to rotate, so that the water in the drainage ditch 4 is directly discharged to the lake or river, and the water resources cannot be effectively utilized. In a further configuration, a mounting groove 61 is provided through the baffle 6, and an inner plate 62 is rotatably provided in the mounting groove 61. The rotation of the inner plate 62 can block or connect the drainage ditch 4 and the water reservoir 2. In addition, a limit bar 63 is fixed in the mounting groove 61. The limit bar 63 is used to prevent the inner plate 62 from rotating toward the drainage ditch 4. The limit bar 63 and the baffle 6 can be integrally formed.

[0053] Specifically, the baffle 6 between the left drainage ditch 4 and the water reservoir 2 is taken as an example for explanation. In the baffle 6, the installation groove 61 is set through from left to right, the top of the inner plate 62 is rotatably connected to the top wall of the installation groove 61, and the limit strip 63 is set on the bottom wall of the installation groove 61. In other embodiments, the limit strip 63 can also be set on the upper and lower front and rear walls of the installation groove 61. When the drainage ditch 4 is drained normally, that is, the pressure of the water in the drainage ditch 4 on the baffle 6 is not enough to drive the baffle 6 to rotate, but the inner plate 62 is not provided with a rotation damping, so that the pressure of the water in the drainage ditch 4 on the inner plate 62 only needs to overcome the reaction force of the water in the water reservoir 2 on the inner plate 62, and the inner plate 62 can be pushed to rotate toward the side of the water reservoir 2, so that part of the water flow in the drainage ditch 4 flows into the water reservoir 2 for standby.

[0054] When the water pressure in the reservoir 2 is balanced with the water pressure in the drainage ditch 4, the inner plate 62 is reset and the mounting groove 61 is closed. At this time, the water in the drainage ditch 4 no longer flows into the reservoir 2, so as to avoid filling the reservoir 2. The reservoir 2 has a certain overflow margin to share the drainage pressure of the drainage ditch 4 during waterlogging. The rotation of the inner plate 62 is as shown in the attached figure. Figure 5 shown.

[0055] It should be noted that the reaction pressure of the water in the water reservoir 2 on the inner plate 62 and the baffle 6 has a maximum value, that is, when the water level in the water reservoir 2 reaches the maximum threshold of the valve 22 in the drain pipe 21, the reaction pressure of the water in the water reservoir 2 on the inner plate 62 and the baffle 6 is the largest. When the water in the drain ditch 4 continues to flow into the water reservoir 2 by pushing the inner plate 62 or the baffle 6 to rotate, the valve 22 will open to keep the water in the water reservoir 2 in dynamic balance.

[0056] Specifically, when the water pressure in the gutter 4 only drives the inner plate 62 to rotate and makes the water level in the reservoir 2 reach the maximum threshold value set by the valve 22, the reaction force of the water in the reservoir 2 on the inner plate 62 and the baffle is the largest. When the water level in the gutter 4 continues to rise, before the water pressure in the gutter 4 is insufficient to drive the baffle 6 to rotate, the water in the gutter 4 will drive the inner plate 62 to rotate, causing the water in the gutter 4 to flow into the reservoir 2, and at this time the valve 22 is also opened to discharge the water in the reservoir 2, so that the water in the reservoir 2 maintains a dynamic balance; when the water level in the gutter 4 rises to a level sufficient to drive the baffle 6 to rotate, the baffle 6 rotates, so that the water in the gutter 4 flows into the reservoir 2 at a larger flow rate, and at this time the water in the reservoir 2 still maintains a dynamic balance under the action of the valve 22, and the flow rate of the valve 22 also increases accordingly. In the specific setting, the maximum flow rate of the valve 22 is limited, so multiple valves 22 are also set to deal with waterlogging.

[0057] In further settings, as shown in the attached Figure 2 , Attachment Figure 3As shown, a vertical groove 8 is provided at the bottom of the drainage ditch 4, and the underground pipeline 3 is connected to the vertical groove 8. A lifting plate 9 is provided in the vertical groove 8 to slide up and down, and an elastic member 10 is fixedly connected between the bottom of the lifting plate 9 and the bottom wall of the vertical groove 8. The vertical groove 8 and the underground pipeline 3 are blocked or connected by the lifting and sliding of the lifting plate 9. In addition, a bayonet 91 is provided on the lifting plate 9, and a clamping strip 64 is fixed on the baffle 6. When the baffle 6 blocks the drainage ditch 4 and the water reservoir 2, the clamping strip 64 can be clamped in the bayonet 91. A hook 92 is fixed on the top of the lifting plate 9, and the clamping strip 64 and the baffle 6 can be integrally formed.

[0058] Specifically, the drainage ditch 4, baffle 6 and lifting plate 9 on the left are used as examples for explanation. The vertical groove 8 is vertically opened and is not directly connected to the water reservoir 2. The bottom of the right side of the vertical groove 8 is connected to the underground pipeline 3. When the baffle 6 blocks the drainage ditch 4 and the water reservoir 2, the clamping strip 64 is clamped into the clamping slot 91. At this time, the lifting plate 9 is in the upper limit position and blocks the vertical groove 8 and the underground pipeline 3. When the water pressure in the drainage ditch 4 drives the baffle 6 to rotate, the clamping strip 64 is disengaged from the clamping slot 91, and the lifting plate 9 slides downward under the action of the elastic member 10, so that the drainage ditch 4 and the underground pipeline 3 are connected through the vertical groove 8, so that the water in the drainage ditch 4 can be directly discharged into the underground pipeline 3 through the vertical groove 8, further sharing the drainage pressure of the drainage ditch 4.

[0059] In this embodiment, the elastic member 10 is a spring. During the lifting and lowering process of the lifting plate 9, the spring is always in a stretched state, so that the lifting plate 9 always has a pulling force pulling it downward, and after the clamping strip 64 is separated from the clamping port 91, the lifting plate 9 can be quickly driven to slide down.

[0060] In addition, a hook 92 is fixedly arranged on the top of the lifting plate 9. After the waterlogging is over, the hook 92 can be hooked into the vertical groove 8 manually or by using a tool to pull the lifting plate 9 upward to reset. It should be noted that after the waterlogging is over, the baffle 6 will block the drainage ditch 4 and the reservoir 2 again. At this time, the clamping strip 64 will limit the reset of the lifting plate 9. It is necessary to push the baffle 6 slightly manually to prevent the clamping strip 64 from interfering with the reset of the lifting plate 9. After the lifting plate 9 is reset, the odor in the underground pipeline 3 can also be reduced from being transmitted through the vertical groove 8 and the drainage ditch 4.

[0061] A grating 5 is detachably mounted on the top of the drain ditch 4, and the grating 5 is L-shaped as a whole. Specifically, the grating 5 is a cement grating 5, which can be installed on the top of the drain ditch 4 under its own gravity, which is convenient and quick. The grating 5 is L-shaped as a whole, and the L-shaped fence opened therein is convenient for inserting tools, and also provides a larger tool operation space when resetting the lifting plate 9.

[0062] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A drainage system, It is characterized in that Including drainage ditches (4) opened below the road surface, sponge city green belts, The sponge city green belt includes: A planting belt (1), the planting belt (1) comprising a concrete layer (11) fixed on a road surface, and a planting layer (12) laid on the concrete layer (11) for planting green plants; A water reservoir (2) is provided below the road surface and below the planting belt (1); An underground pipeline (3) fixedly arranged below the water reservoir (2) and connected to a sewer; A connecting pipe (13) and water-absorbing cotton (14) are fixedly provided in the planting belt (1); the lower ends of the connecting pipe (13) and the water-absorbing cotton (14) extend to the water reservoir (2); the upper end of the connecting pipe (13) extends upward to above the planting layer (12); the upper end of the water-absorbing cotton (14) extends upward to the planting layer (12); a drainage pipe (21) is connected between the water reservoir (2) and the underground pipeline (3); a valve (22) is provided in the drainage pipe (21); A baffle (6) is hingedly connected to the bottom of the concrete layer (11); a rotation damper is fixedly connected between the baffle (6) and the concrete layer (11); the baffle (6) is located between the drainage ditch (4) and the water reservoir (2); and the baffle (6) can be rotated to block or connect the drainage ditch (4) and the water reservoir (2); A vertical groove (8) is provided at the bottom of the drainage ditch (4), the underground pipeline (3) is connected to the vertical groove (8), a lifting plate (9) is provided in the vertical groove (8) for sliding up and down, an elastic member (10) is fixedly connected between the bottom of the lifting plate (9) and the bottom wall of the vertical groove (8), and the lifting plate (9) is lifted and slid to block or connect the vertical groove (8) and the underground pipeline (3), a bayonet (91) is provided on the lifting plate (9), and a clamping strip (64) is fixedly provided on the baffle plate (6), and when the baffle plate (6) blocks the drainage ditch (4) and the water reservoir (2), the clamping strip (64) can be clamped in the bayonet (91); The baffle plate (6) has a mounting groove (61) extending therethrough, and an inner plate (62) is rotatably disposed in the mounting groove (61). The inner plate (62) can be rotated to block or connect the drainage ditch (4) and the water reservoir (2).

2. The drainage system according to claim 1, It is characterized in that A planting groove (111) opening upward is provided in the concrete layer (11), and the planting layer (12) is arranged in the planting groove (111).

3. The drainage system according to claim 1, It is characterized in that The top end of the connecting pipe (13) is detachably connected to a manhole cover (15).

4. The drainage system according to claim 1, It is characterized in that A limiting strip (63) is fixedly provided in the installation groove (61), and the limiting strip (63) is used to prevent the inner plate (62) from rotating toward one side of the drainage ditch (4).

5. The drainage system according to claim 1, It is characterized in that A hook (92) is fixedly provided on the top end of the lifting plate (9).

6. The drainage system according to claim 1, It is characterized in that A grating (5) is detachably mounted on the top of the drainage ditch (4).

7. The drainage system according to claim 6, It is characterized in that The grid plate (5) is L-shaped.

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