A new rainwater collecting and processing device
By designing a rainwater collection and treatment device with a collection tank and filtration mechanism, the problems of direct rainwater discharge and river pollution in traditional rainwater systems have been solved. This device achieves effective rainwater filtration and greening water replenishment, while reducing maintenance workload.
Patent Information
- Application Number
- CN202522171559.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-14
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-10-14
AI Technical Summary
In traditional rainwater drainage systems, rainwater is directly discharged or pollutes waterways, making it impossible to utilize effectively. Furthermore, irrigation of green spaces requires manual watering, increasing the workload of operation and maintenance.
A novel rainwater collection and treatment device is designed, comprising a collection tank, a filtration mechanism, and a support tank. After rainwater is filtered by the filtration mechanism, it enters the support tank, where an absorbent sponge siphons the water to the ground surface for use in landscaping. The device is further enhanced by filtration through pebbles, gravel, and sand layers, and an overflow pipe prevents overload.
It achieves effective filtration and utilization of rainwater, reduces river pollution, reduces the workload of greening operation and maintenance, ensures water replenishment for greening, and prevents rainwater overflow.
Smart Images

Figure CN224678796U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of rainwater harvesting technology, and specifically relates to a novel rainwater harvesting and treatment device. Background Technology
[0002] Rainwater, as a relatively abundant water resource, can effectively alleviate severe water shortages when utilized properly. Making good use of rainwater resources has far-reaching significance for human sustainable development. Urban rainwater, through effective recycling and reuse as greywater, can directly save domestic water resources, alleviate urban water supply tensions, and allow rainwater to infiltrate, thus conserving groundwater, increasing the moisture content of shallow soils, regulating climate, curbing the urban heat island effect, and reducing urban stormwater load. Effective utilization of urban rainwater can also reduce non-point source pollution caused by rainwater runoff, reduce water pollution in urban rivers and lakes, and reduce dust pollution.
[0003] In traditional stormwater drainage systems, rainwater collected from roads is typically transported directly to water treatment plants or discharged into nearby waterways. This approach wastes rainwater, requires manual irrigation for the greenery along roadsides, and the rainwater from municipal roads contains pollutants that can also pollute waterways. Summary of the Invention
[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a new type of rainwater collection and treatment device. After the rainwater on the road surface is collected and filtered, it enters the carrier box. The water in the carrier box is siphoned to the ground surface by the water-absorbing sponge. It can be used as water replenishment for green facilities. While reducing the pollution of rivers by pollutants contained in road rainwater, it can also irrigate greenery and reduce the workload of greening maintenance personnel.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A novel rainwater collection and treatment device includes a water collection tank with a filter mechanism installed on it. The water collection tank is connected to a support box on one side via a drain pipe. A support layer is installed inside the support box, and a soil layer is covered on top of the support layer. Green plants are planted in the soil layer. A water storage area is located below the support layer. Multiple water-absorbing sponges are buried in the soil layer, and the bottom of the water-absorbing sponges extends through the support layer into the water storage area.
[0006] The filtration mechanism includes a grate, a pebble layer, a gravel layer, and a sand layer. The grate is installed on the top of the water collection tank. Three hanging baskets are installed inside the water collection tank from top to bottom. The pebble layer, gravel layer, and sand layer are respectively filled in different hanging baskets from top to bottom.
[0007] Preferably, the pebble layer has a particle size of 10-15 mm, the gravel layer has a particle size of 5-10 mm, and the sand and gravel layer has a particle size of 1-3 mm.
[0008] Preferably, an overflow pipe is installed above the water storage area.
[0009] The beneficial effects of this utility model are: 1) After being collected and filtered, rainwater from the road surface enters the carrying tank. The water in the carrying tank is then siphoned to the ground surface by an absorbent sponge. This can be used to replenish water for greening facilities, reducing the pollution of rivers by pollutants contained in road rainwater while irrigating greening and reducing the workload of greening maintenance personnel.
[0010] 2) The pebble layer has a particle size of 10-15mm, the gravel layer has a particle size of 5-10mm, and the sand and gravel layer has a particle size of 1-3mm, thus ensuring the rainwater filtration effect.
[0011] 3) An overflow pipe is installed above the water storage area. When the water level in the water storage area of the carrier box is too high, rainwater enters the municipal pipeline through the overflow pipe, preventing rainwater from entering the outside of the carrier box and ensuring the effectiveness of the device. Attached Figure Description
[0012] Appendix Figure 1 This is a schematic diagram of the internal structure of the water collection tank in a novel rainwater collection and treatment device according to this utility model.
[0013] Appendix Figure 2 This is an internal side view of the water collection tank in a novel rainwater collection and treatment device according to this utility model.
[0014] Appendix Figure 3 This is a schematic diagram of the structure of a novel rainwater collection and treatment device according to this utility model.
[0015] Appendix Figure 4 This is a schematic diagram of the carrier box structure in a novel rainwater collection and treatment device according to this utility model.
[0016] In the diagram: 1. Water collection tank; 2. Gravel; 3. Hanging basket; 4. Pebble layer; 5. Gravel layer; 6. Sand and gravel layer; 7. Clear water area; 8. Drainage pipe; 9. Support layer; 10. Absorbent sponge; 11. Support box; 12. Water storage area; 13. Soil layer; 14. Overflow pipe. Detailed Implementation
[0017] The following is in conjunction with the appendix Figure 1-4The technical solutions in the embodiments of this utility model are clearly and completely described herein. 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 skilled in the art without creative effort are within the protection scope of this utility model.
[0018] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0019] A novel rainwater collection and treatment device includes a water collection tank 1, on which a filter mechanism is installed. The water collection tank 1 is connected to a support box 11 on one side via a drain pipe 8. A support layer 9 is installed inside the support box 11. A soil layer 13 is covered on top of the support layer 9, and greenery is planted in the soil layer 13. A water storage area 12 is located below the support layer 9. Multiple water-absorbing sponges 10 are buried in the soil layer 13. The bottom of the water-absorbing sponges 10 extends through the support layer 9 into the water storage area 12. The water-absorbing sponges 10 siphon water upwards to the soil layer 13, which can replenish the greenery above. The support layer 9 ensures that the soil layer 13 above does not fall.
[0020] The filtration mechanism includes a grate 2, a pebble layer 4, a gravel layer 5, and a sand and gravel layer 6. The grate 2 is installed on the top of the water collection tank 1. Three hanging baskets are installed inside the water collection tank 1 from top to bottom. The pebble layer 4, gravel layer 5, and sand and gravel layer 6 are respectively filled in different hanging baskets from top to bottom. Large particles, leaves, and other debris in the rainwater are filtered and trapped outside the water collection tank 1 through the grate 2. The rainwater entering the water collection tank 1 passes through the pebble layer 4, gravel layer 5, and sand and gravel layer 6 in sequence before entering the clear water zone 7 at the bottom of the water collection tank 1. The hanging baskets make it easy to clean and replace the pebble layer 4, gravel layer 5, and sand and gravel layer 6 stored inside, improving work efficiency.
[0021] The pebble layer 4 has a particle size of 10-15mm, the gravel layer 5 has a particle size of 5-10mm, and the sand and gravel layer 6 has a particle size of 1-3mm, thus ensuring the rainwater filtration effect. An overflow pipe 14 is installed above the water storage area 12. When the water level in the water storage area 12 of the carrier box 11 is too high, the rainwater enters the municipal pipeline through the overflow pipe 14, preventing rainwater from entering the outside of the carrier box 11 and ensuring the effectiveness of the device.
[0022] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.
Claims
1. A novel rainwater harvesting and treatment device, comprising a water collection tank, characterized in that, The water collection tank is equipped with a filter mechanism. The water collection tank is connected to a support box on one side through a drain pipe. A support layer is installed inside the support box. A soil layer is covered on top of the support layer. Green plants are planted in the soil layer. A water storage area is located below the support layer. Multiple water-absorbing sponges are buried in the soil layer. The bottom of the water-absorbing sponges extends through the support layer into the water storage area.
2. The novel rainwater harvesting and treatment device according to claim 1, characterized in that, The filtration mechanism includes a grate, a pebble layer, a gravel layer, and a sand layer. The grate is installed on the top of the water collection tank. Three hanging baskets are installed inside the water collection tank from top to bottom. The pebble layer, gravel layer, and sand layer are respectively filled in different hanging baskets from top to bottom.
3. The novel rainwater harvesting and treatment device according to claim 2, characterized in that, The pebble layer has a particle size of 10-15 mm.
4. A novel rainwater harvesting and treatment device according to claim 2, characterized in that, The gravel layer has a particle size of 5-10 mm.
5. A novel rainwater harvesting and treatment device according to claim 2, characterized in that, The gravel layer has a particle size of 1-3 mm.
6. A novel rainwater harvesting and treatment device according to claim 1, characterized in that, An overflow pipe is installed above the water storage area.