Sponge city rainwater retention and purification device

Abstract

The utility model relates to the technical field of sponge city, proposes a kind of sponge city rainwater retention purification device, comprising: pretreatment tank;Water inlet tube is arranged above pretreatment tank, the inside of water inlet tube is provided with rough filter component, for filtering out larger sundries such as leaf, branch;The inside of pretreatment tank is provided with planting block, by planting purification plant on the planting block and then purifying water;The output of pretreatment tank is provided with fine filter component.The setting of pretreatment tank can first pretreat rainwater, then fine filter, greatly reduce the working strength of fine filter component, extend the service life of equipment, and the setting of fine filter component can filter rainwater finally, increase the purification degree of rainwater, by the setting of planting block, by planting purification plant on planting block, purify rainwater, so that the utilization rate of rainwater is higher.

Description

Technical Field

[0001] This utility model belongs to the field of sponge city technology, specifically relating to a sponge city rainwater retention and purification device. Background Technology

[0002] Sponge city is a new concept of urban ecological construction. Through facilities such as permeable pavement, rain gardens, and green roofs, the city can absorb, store, and purify rainwater like a sponge, effectively alleviating urban flooding, replenishing groundwater resources, reducing surface runoff pollution, enhancing the city's ability to cope with extreme weather, and promoting harmonious coexistence between humans and nature.

[0003] A known authorized patent with application number 202222998250.1 discloses a rainwater retention and purification device for sponge cities. The device includes a main body, a leaf filtering mechanism, and a collection mechanism. The main body comprises a collection box, a cover, a collection hopper, and insert blocks. The cover is fitted onto the upper end of the collection box; the collection hopper is fixedly connected to the upper end of the cover; and the insert blocks are fixedly connected to both ends of the collection box. The leaf filtering mechanism is installed inside the main body. This mechanism includes a filter screen, guide blocks, guide grooves, a housing, a motor, a rotating rod, a sliding plate, a buckle, ball bearings, a collar, a slider, a connecting rod, and a push brush. The filter screen is inserted inside the collection box. This invention improves the purity of rainwater collection and reduces the amount of leaves falling into the main body, thus enhancing practicality. The collection mechanism also facilitates the classification of leaves and rainwater, making collection easier.

[0004] However, the following problems were found in the implementation of the relevant technology: When in use, the device uses direct filtration, but it can only pre-treat rainwater and cannot treat it further.

[0005] Therefore, a rainwater retention and purification device for sponge cities is proposed to solve the above problems. Utility Model Content

[0006] This invention proposes a rainwater retention and purification device for sponge cities, which solves the problem in related technologies that, when in use, the device uses direct filtration, but can only pre-treat rainwater and cannot perform further treatment.

[0007] The technical solution of this utility model is as follows: A rainwater retention and purification device for sponge cities, comprising:

[0008] Pretreatment box;

[0009] An inlet cylinder is installed above the pretreatment tank, and a coarse filter assembly is installed inside the inlet cylinder to filter out larger debris such as leaves and branches;

[0010] The pretreatment box is equipped with planting blocks inside, and water is purified by planting purifying plants on the planting blocks.

[0011] The output end of the pretreatment box is equipped with a fine filtration assembly, which includes a fixed barrel connected to the pretreatment box and filter cotton installed inside the fixed barrel, for the final filtration of rainwater.

[0012] The output end of the fine filtration unit is equipped with a collection chamber for temporarily storing the purified water.

[0013] Preferably, the pretreatment box is provided with an inclined plate and a baffle, and the inclined plate and the baffle together form a buffer chamber for decelerating and buffering the incoming rainwater.

[0014] Preferably, the pretreatment box is provided with a partition, which forms a sedimentation chamber inside the pretreatment box.

[0015] Preferably, the pretreatment box is provided with multiple short plates inside, the top of the short plates contacting the bottom of the planting block, and the pretreatment box is provided with multiple fixing plates inside, one side of the fixing plates contacting the rear wall of the planting block.

[0016] Preferably, the coarse filtration assembly includes a shielding cover disposed at the top of the water inlet cylinder and a first filter cover and a second filter cover disposed inside the water inlet cylinder, wherein the first filter cover is located above the second filter cover and the mesh count of the second filter cover is higher than that of the first filter cover.

[0017] Both the first and second filter covers have handles on their outer walls.

[0018] Preferably, the planting block includes planting soil for planting and a first geotextile for the planting soil. The outer side of the first geotextile is provided with expanded clay, the outer side of the expanded clay is provided with activated carbon, the outer side of the activated carbon is provided with zeolite, and the outer side of the zeolite is provided with a second geotextile, which is used to fix the entire planting block and prevent the internal materials from escaping.

[0019] Preferably, the fine filtration assembly further includes a fixed grid disposed inside the fixed barrel, and the filter cotton is located between the fixed grid and the fixed barrel;

[0020] The fixed barrel is equipped with a centrifugal fan inside, and a cover plate is provided at the top of the fixed barrel. A drive motor is fixedly installed on the upper surface of the cover plate, and the output end of the drive motor is fixedly connected to one end of the centrifugal fan.

[0021] Preferably, the output end of the pretreatment box is provided with a conveying pipe, the output end of the conveying pipe is connected to the fixed bucket, and a one-way valve is provided on the outer wall of the conveying pipe;

[0022] The fixed bucket is equipped with an output pipe at its output end, and the output pipe is connected to the collection chamber.

[0023] The working principle and beneficial effects of this utility model are as follows:

[0024] By setting up a pretreatment box, rainwater can be pretreated before fine filtration, which greatly reduces the workload of the fine filtration components and extends the service life of the equipment. The fine filtration components can also perform final filtration of rainwater, increasing the degree of rainwater purification. By setting up planting blocks, rainwater can be purified by planting purifying plants on the planting blocks, making the utilization rate of rainwater higher. Attached Figure Description

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0027] Figure 2 This is a cross-sectional three-dimensional structural diagram of the fine filtration component of this utility model;

[0028] Figure 3 This is a cross-sectional three-dimensional structural diagram of the pretreatment box of this utility model;

[0029] Figure 4 This is a cross-sectional view of the planting block of this utility model.

[0030] In the diagram: 1. Pretreatment tank; 2. Inlet cylinder; 3. Cover; 4. First filter cover; 5. Second filter cover; 6. Handle; 7. Inclined plate; 8. Baffle; 9. Buffer chamber; 10. Sedimentation chamber; 11. Partition; 12. Planting block; 13. Short plate; 14. Fixing plate; 15. Conveying pipe; 16. One-way valve; 17. Fixing bucket; 18. Filter cotton; 19. Fixing grid; 20. Centrifugal fan; 21. Cover plate; 22. Drive motor; 23. Collection chamber; 24. Output pipe; 25. Planting soil; 26. First geotextile; 27. Ceramsite; 28. Activated carbon; 29. ​​Zeolite; 30. Second geotextile. Detailed Implementation

[0031] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0032] Implementation

[0033] Please see Figure 1 -4. A sponge city rainwater retention and purification device, comprising:

[0034] Pretreatment box 1;

[0035] The water inlet cylinder 2 is located above the pretreatment tank 1. The inside of the water inlet cylinder 2 is equipped with a coarse filter assembly to filter out larger debris such as leaves and branches.

[0036] The pretreatment box 1 is equipped with a planting block 12, and the water is purified by planting purification plants on the planting block 12.

[0037] The output end of the pretreatment box 1 is equipped with a fine filtration assembly, which includes a fixed barrel 17 connected to the pretreatment box 1 and filter cotton 18 disposed inside the fixed barrel 17, for final filtration of rainwater.

[0038] The output end of the fine filtration unit is equipped with a collection chamber 23 for temporarily storing the purified water;

[0039] The pretreatment box 1 is equipped with an inclined plate 7 and a baffle 8. The inclined plate 7 and the baffle 8 together form a buffer chamber 9, which is used to slow down the incoming rainwater.

[0040] The pretreatment tank 1 is equipped with a partition 11, which forms a sedimentation chamber 10 inside the pretreatment tank 1.

[0041] The pretreatment box 1 is equipped with multiple short plates 13 inside, the top of the short plates 13 is in contact with the bottom of the planting block 12, and the pretreatment box 1 is equipped with multiple fixing plates 14 inside, one side of the fixing plate 14 is in contact with the rear wall of the planting block 12.

[0042] The coarse filtration assembly includes a cover 3 set at the top of the water inlet cylinder 2 and a first filter cover 4 and a second filter cover 5 set inside the water inlet cylinder 2. The first filter cover 4 is located above the second filter cover 5, and the mesh size of the second filter cover 5 is higher than that of the first filter cover 4.

[0043] Both the outer walls of the first filter cover 4 and the second filter cover 5 are provided with handles 6;

[0044] The planting block 12 includes planting soil 25 for planting and a first geotextile 26 for planting soil 25. The outer side of the first geotextile 26 is provided with expanded clay 27, the outer side of the expanded clay 27 is provided with activated carbon 28, the outer side of the activated carbon 28 is provided with zeolite 29, and the outer side of the zeolite 29 is provided with a second geotextile 30, which is used to fix the entire planting block 12 and prevent the internal materials from escaping.

[0045] The fine filtration assembly also includes a fixed grid 19 disposed inside the fixed barrel 17, and filter cotton 18 is located between the fixed grid 19 and the fixed barrel 17;

[0046] A centrifugal fan 20 is installed inside the fixed bucket 17, and a cover plate 21 is installed at the top of the fixed bucket 17. A drive motor 22 is fixedly installed on the upper surface of the cover plate 21, and the output end of the drive motor 22 is fixedly connected to one end of the centrifugal fan 20.

[0047] The output end of the pretreatment box 1 is provided with a conveying pipe 15, the output end of the conveying pipe 15 is connected to the fixed bucket 17, and a one-way valve 16 is provided on the outer wall of the conveying pipe 15.

[0048] The output end of the fixed bucket 17 is provided with an output pipe 24, which is connected to the collection bin 23.

[0049] The technical solution provided in this embodiment is as follows: In use, purification plants are first planted on the planting block 12. After cultivation, the equipment can be used. The equipment is buried underground, with the top of the inlet cylinder 2 flush with the ground. During use, rainwater first enters the inlet cylinder 2 through the cover 3, and then is filtered through the first filter cover 4 and the second filter cover 5, removing larger substances. After prolonged use, the first filter cover 4 or the second filter cover 5 can be removed by pulling the handle 6 for maintenance. Rainwater first enters the pretreatment tank 1, and is guided into the buffer chamber 9 by the inclined plate 7. The baffle 8 blocks the rainwater, reducing its flow rate and buffering it to stabilize it. Next, the rainwater enters the sedimentation chamber 10, where it is further filtered. The system allows internal sediment to settle. The settled rainwater then passes through planting blocks 12, where the purifying plants further purify the rainwater. Meanwhile, zeolite 29 inside the planting blocks 12 denits the water, activated carbon 28 adsorbs organic pollutants and some heavy metals, and expanded clay granules 27 provide a large surface area for microorganisms to attach and grow. The planting soil 25 inside provides basic conditions for plant growth. The purified rainwater enters the fine filter assembly through the delivery pipe 15. Then, the drive motor 22 is activated, driving the centrifugal fan 20 to rotate at high speed, pushing the water outwards and filtering it through the filter cotton 18. During filtration, a one-way valve 16 ensures that the rainwater does not flow backwards. The filtered water enters the collection chamber 23 for temporary storage.

[0050] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A rainwater retention and purification device for sponge cities, characterized in that, include: Pretreatment box (1); An inlet cylinder (2) is set above the pretreatment tank (1). The inlet cylinder (2) is equipped with a coarse filter assembly to filter out larger debris such as leaves and branches. The pretreatment box (1) is equipped with a planting block (12), and the water is purified by planting purifying plants on the planting block (12). The output end of the pretreatment box (1) is provided with a fine filter assembly, which includes a fixed bucket (17) connected to the pretreatment box (1) and filter cotton (18) disposed inside the fixed bucket (17) for final filtration of rainwater. The output end of the fine filter component is equipped with a collection chamber (23) for temporarily storing the purified water.

2. The sponge city rainwater retention and purification device according to claim 1, characterized in that: The pretreatment box (1) is equipped with an inclined plate (7) and a baffle (8). The inclined plate (7) and the baffle (8) together form a buffer chamber (9) for decelerating the incoming rainwater.

3. The sponge city rainwater retention and purification device according to claim 1, characterized in that: The pretreatment box (1) is equipped with a partition (11) to form a sedimentation chamber (10) inside the pretreatment box (1).

4. The sponge city rainwater retention and purification device according to claim 1, characterized in that: The pretreatment box (1) is provided with a number of short plates (13), the top of the short plates (13) is in contact with the bottom of the planting block (12), and the pretreatment box (1) is provided with a number of fixing plates (14), one side of the fixing plates (14) is in contact with the rear wall of the planting block (12).

5. The sponge city rainwater retention and purification device according to claim 1, characterized in that: The coarse filter assembly includes a shielding cover (3) set at the top of the water inlet cylinder (2) and a first filter cover (4) and a second filter cover (5) set inside the water inlet cylinder (2). The first filter cover (4) is located above the second filter cover (5), and the mesh count of the second filter cover (5) is higher than that of the first filter cover (4). Both the first filter cover (4) and the second filter cover (5) are provided with handles (6) on their outer walls.

6. The sponge city rainwater retention and purification device according to claim 1, characterized in that: The planting block (12) includes planting soil (25) for planting and a first geotextile (26) for planting soil (25). The outer side of the first geotextile (26) is provided with expanded clay (27), the outer side of the expanded clay (27) is provided with activated carbon (28), the outer side of the activated carbon (28) is provided with zeolite (29), and the outer side of the zeolite (29) is provided with a second geotextile (30) for fixing the entire planting block (12) and preventing the internal materials from escaping.

7. The sponge city rainwater retention and purification device according to claim 1, characterized in that: The fine filtration assembly also includes a fixed grid (19) disposed inside the fixed barrel (17), and the filter cotton (18) is located between the fixed grid (19) and the fixed barrel (17); The fixed bucket (17) is equipped with a centrifugal fan (20) inside. The top of the fixed bucket (17) is equipped with a cover plate (21). A drive motor (22) is fixedly installed on the upper surface of the cover plate (21). The output end of the drive motor (22) is fixedly connected to one end of the centrifugal fan (20).

8. The sponge city rainwater retention and purification device according to claim 1, characterized in that: The output end of the pretreatment box (1) is provided with a conveying pipe (15), the output end of the conveying pipe (15) is connected to the fixed bucket (17), and the outer wall of the conveying pipe (15) is provided with a one-way valve (16). The fixed bucket (17) is provided with an output pipe (24) at its output end, and the output pipe (24) is connected to the collection bin (23).

Images