Buried ecological filter bed for water treatment
By introducing lifting plates and collecting filter plates into the buried ecological filter bed, the problem of soil or sand loss is solved, achieving continuous purification effect and reducing maintenance needs.
Patent Information
- Application Number
- CN202520253521.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-17
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-02-17
AI Technical Summary
During use, soil or sand can easily be lost from ecological filter beds, leading to a decrease in purification efficiency. They are also prone to clogging, requiring frequent maintenance and making continuous use difficult.
Design a buried ecological filter bed. Through the combination structure of filter tank, ecological planting layer, sand and gravel layer and stone layer, and by using the design of lifting plate and collecting filter plate, the impurities can be recovered and reused, and the soil or sand can be prevented from being lost.
It effectively prevents soil or sand loss, maintains purification effect, reduces maintenance frequency, and ensures the continuous use of ecological filter beds.
Smart Images
Figure CN223792997U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water treatment technology, and in particular to an underground ecological filter bed for water treatment. Background Technology
[0002] With the improvement of people's living standards, the impact of domestic sewage discharge on the environment has become increasingly prominent, and the problem of effective treatment of domestic sewage urgently needs to be solved. The construction of centralized sewage treatment plants at the city, county, and even township levels has greatly solved the sewage treatment problem in densely populated urban areas, counties, and townships. However, as a large agricultural country, my country has a rural population of 50%, and the rural population is relatively dispersed. The sewage collection network is quite lacking, and it is basically impossible to achieve rainwater and sewage separation. The industrial sewage treatment model cannot be applied to small-scale village-level sewage treatment.
[0003] Ecological filter bed water purification systems are artificial ecosystems that simulate natural wetlands, developed from micro-ecological restoration technology. They are artificially constructed and monitored, utilizing the synergistic effects of physical, chemical, and biological processes within the ecosystem to achieve highly efficient wastewater purification through filtration, adsorption, sedimentation, ion exchange, plant absorption, and microbial decomposition. Compared to natural wetland ecosystems, ecological filter bed water purification systems significantly surpass natural wetland ecosystems in terms of site selection, load capacity, controllability, and wastewater treatment capacity.
[0004] During the use of an ecological filter bed, the filtered water carries some soil or sand along with it. The support mesh and its holes in the lower layer supporting the ecological filter bed are larger than the holes in the filter plate. This causes the purified water to carry some soil or sand downwards, which then accumulates in the water collection tank at the bottom of the ecological filter bed. This soil or sand can easily flow outwards with the water or accumulate at the bottom of the ecological filter bed, causing blockages in the pipes. The loss of the upper layer of soil or sand also affects the overall purification effect, causing the ecological filter bed to lose its effectiveness after a period of time and require frequent maintenance. This makes it inconvenient for users. To solve these problems, it is necessary to propose a buried ecological filter bed for water treatment. Utility Model Content
[0005] This utility model aims to at least partially solve one of the technical problems in related technologies. Therefore, one objective of this utility model is to provide a buried ecological filter bed for water treatment. Water is transported into a filter tank and sequentially filtered through an ecological planting layer, a sand and gravel layer, a pebble layer, and a filter support plate before being discharged downwards. A collecting filter plate further filters the water, retaining impurities while the water is discharged. The retained impurities are impacted to the bottom of the collecting filter plate, and then a lifting plate pulls the retained impurities back to the upper ecological planting layer and sand and gravel layer, thus ensuring the continuous use of the ecological filter bed.
[0006] According to this utility model, a buried ecological filter bed for water treatment includes a fixed base, a filter groove on the upper surface of the fixed base, a filter support plate fixedly connected to the wall of the filter groove, a gravel layer on the upper surface of the filter support plate, a sand and gravel layer on the upper surface of the gravel layer, an ecological planting layer on the upper surface of the sand and gravel layer, a fixed cylinder fixedly connected to the filter support plate, a collecting filter plate fixedly installed at the bottom of the filter groove, a lifting groove on the upper surface of the fixed base, a feed hole through the bottom wall of the lifting groove, a discharge hole through the top wall of the lifting groove, a lifting plate slidably connected inside the lifting groove, and a connecting rod fixedly connected to the upper surface of the lifting plate.
[0007] Preferably, the upper end of the connecting rod extends through to the outside of the fixed base, and a lifting handle is fixedly connected to the upper end of the connecting rod.
[0008] Preferably, an elastic rubber block is fixedly connected to the bottom of the lifting trough, and the elastic rubber block coincides with the opening of the feed hole.
[0009] Preferably, the openings of the feed hole and the discharge hole at the ends away from the lifting trough are both connected to the filter trough. The feed hole is connected to the filter trough above the collecting filter plate, and the discharge hole is connected to the filter trough above the ecological planting layer.
[0010] Preferably, the fixing cylinder is arranged with both ends through, and the upper end of the fixing cylinder passes through the filter support plate, the stone layer, the sand and gravel layer and the ecological planting layer in sequence and extends upward to the outside of the fixing base.
[0011] Preferably, a discharge pipe is fixedly installed on the bottom wall of the filter tank, one end of the discharge pipe extends through to the outside of the fixed base, and the discharge pipe is connected to the filter tank located below the collecting filter plate.
[0012] Preferably, the collecting filter plate is arranged in a semi-funnel shape, and the outer wall of the collecting filter plate is connected to the four inner walls of the filter tank.
[0013] The beneficial effects of this utility model are as follows: During use, water is transported to the filter tank and passes through the ecological planting layer, sand and gravel layer, stone layer and filter support plate in sequence before being discharged downwards. The collecting filter plate will filter the filtered water again, leaving the impurities while the water is discharged. The impurities left by the filter are impacted to the bottom of the collecting filter plate, and then the lifting plate inside the lifting tank will pull the impurities left by the filter back to the ecological planting layer and sand and gravel layer above to fill them. This not only avoids impurities affecting the filtration of the collecting filter plate, but also prevents the ecological planting layer and sand and gravel layer from losing sand, thus ensuring the continuous use of the ecological filter bed. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the external structure of a buried ecological filter bed for water treatment proposed in this utility model.
[0015] Figure 2 This is a schematic diagram showing the disassembled structure of a buried ecological filter bed for water treatment proposed in this utility model.
[0016] Figure 3 This is a schematic diagram of the internal structure of a buried ecological filter bed for water treatment proposed in this utility model.
[0017] In the diagram: 1. Fixed base; 2. Filter tank; 3. Filter support plate; 4. Stone layer; 5. Sand and gravel layer; 6. Ecological planting layer; 7. Collection filter plate; 8. Lifting trough; 9. Feed hole; 10. Discharge hole; 11. Lifting plate; 12. Connecting rod; 13. Discharge pipe; 14. Lifting handle; 15. Elastic rubber block; 16. Fixed cylinder. Detailed Implementation
[0018] Reference Figure 1-3 A buried ecological filter bed for water treatment includes a fixed base 1, a filter groove 2 on the upper surface of the fixed base 1, a filter support plate 3 fixedly connected to the wall of the filter groove 2, a gravel layer 4 on the upper surface of the filter support plate 3, a sand and gravel layer 5 on the upper surface of the gravel layer 4, and an ecological planting layer 6 on the upper surface of the sand and gravel layer 5. The filter support plate 3 supports the gravel layer 4, and the filter support plate 3 and the gravel layer 4 simultaneously support the sand and gravel layer 5. The sand and gravel layer 5 supports the ecological planting layer 6. A fixed cylinder 16 is fixedly connected to the filter support plate 3. A collecting filter plate 7 is fixedly installed at the bottom of the filter groove 2. A lifting groove 8 is opened on the upper surface of the fixed base 1. A feed hole 9 is opened through the bottom wall of the lifting groove 8. A discharge hole 10 is opened through the top wall of the lifting groove 8. A lifting plate 11 is slidably connected inside the lifting groove 8. A connecting rod 12 is fixedly connected to the upper surface of the lifting plate 11.
[0019] The upper end of the connecting rod 12 extends through to the outside of the fixed base 1, and a lifting handle 14 is fixedly connected to the upper end of the connecting rod 12. The connecting rod 12 can be pressed down by lifting the handle 14, and the connecting rod 12 will push the lifting plate 11 down. Alternatively, the connecting rod 12 can be pulled up by lifting the handle 14, and the connecting rod 12 will push the lifting plate 11 up. Thus, the soil or gravel at the bottom of the filter tank 2 is lifted to the gravel layer 5 and the ecological planting layer 6 by the lifting and lowering of the lifting plate 11.
[0020] The bottom of the lifting trough 8 is fixedly connected with an elastic rubber block 15, and the elastic rubber block 15 coincides with the opening of the feed hole 9. The opening of the feed hole 9 can be sealed by the elastic rubber block 15, so that no foreign matter will enter and affect subsequent use when it is not in use. When the lifting plate 11 presses down on the elastic rubber block 15, the feed hole 9 will be exposed, which makes it convenient for soil or sand to enter the lifting trough 8 through the feed hole 9.
[0021] The feed hole 9 and the discharge hole 10 are connected to the filter tank 2 at the ends away from the lifting trough 8. The feed hole 9 is connected to the filter tank 2 above the collecting filter plate 7, and the discharge hole 10 is connected to the filter tank 2 above the ecological planting layer 6. This allows the lifting trough 8 to be connected to the bottom and top of the filter tank 2 through the feed hole 9 and the discharge hole 10. At this time, the soil or gravel flowing to the bottom of the collecting filter plate 7 will enter the lifting trough 8 through the feed hole 9, and the soil or gravel will flow to the top of the lifting plate 11. At this time, the lifting plate 11 is pulled upward. When the lifting plate 11 rises to the level of the discharge hole 10, the soil or gravel will flow into the ecological planting layer 6 and the gravel layer 5 through the discharge hole 10, and backfill the ecological planting layer 6 and the gravel layer 5 with soil or gravel.
[0022] The fixed cylinder 16 is designed to be open at both ends, with its upper end passing through the filter support plate 3, the gravel layer 4, the sand and gravel layer 5, and the ecological planting layer 6, and extending upwards to the outside of the fixed base 1. The fixed cylinder 16 connects the space below the filter support plate 3 with the outside, allowing the air at the bottom of the filter tank 2 to communicate with the outside. Thus, when water filtered by the filter support plate 3, the gravel layer 4, the sand and gravel layer 5, and the ecological planting layer 6 enters, it can be directly vented to the outside through the fixed cylinder 16, avoiding the situation where the air flow efficiency is low due to the obstruction of the filter support plate 3, the gravel layer 4, the sand and gravel layer 5, and the ecological planting layer 6, which would affect the filtration efficiency.
[0023] A discharge pipe 13 is fixedly installed on the bottom wall of the filter tank 2. One end of the discharge pipe 13 extends through to the outside of the fixed base 1 and is connected to the filter tank 2 located below the collecting filter plate 7. The water filtered by the collecting filter plate 7 will fall to the bottom of the filter tank 2. Then the water in the filter tank 2 will be discharged to the outside through the discharge pipe 13, which will facilitate subsequent treatment.
[0024] The collecting filter plate 7 is set in a semi-funnel shape, and the outer wall of the collecting filter plate 7 is connected to the four inner walls of the filter tank 2. The semi-funnel-shaped collecting filter plate 7 can filter water. The falling water will impact the surface of the collecting filter plate 7, and the collecting filter plate 7 will filter the filtered water again, leaving the mud or sand contained in it. The mud or sand on the collecting filter plate 7 will flow down the slope under the impact of the subsequent water, and will carry the mud or sand to the bottom of the collecting filter plate 7 for subsequent treatment. The water that falls to the bottom of the filter tank 2 after being filtered by the collecting filter plate 7 will be discharged through the discharge pipe 13.
[0025] When using this device, wastewater is first transported to the filter tank 2 of the fixed base 1. The wastewater flows from top to bottom, passing through the ecological planting layer 6, the sand and gravel layer 5, the stone layer 4, and the filter support plate 3 in sequence before falling downwards. It then falls onto the collecting filter plate 7, which further filters the water, leaving behind any soil or gravel. The soil or gravel on the collecting filter plate 7 flows down the slope under the impact of the subsequent water flow, carrying the soil or gravel to the bottom of the collecting filter plate 7. The water, after being filtered by the collecting filter plate 7, falls to the bottom of the filter tank 2 and is then discharged through the discharge pipe 13. Afterwards, the connecting rod 12 can be pressed down by pulling the handle 14, which will push the lifting plate 11 to descend. When the lifting plate 11 descends, it pushes the elastic rubber block 15 downwards to contract and expose the feed hole 9. At this time, the soil or sand flowing to the bottom of the collecting filter plate 7 will enter the lifting trough 8 through the feed hole 9 and flow to the top of the lifting plate 11. Then, the lifting plate 11 is pulled upwards, and the elastic rubber block 15 will reset itself after being released from pressure. The reset elastic rubber block 15 will seal the feed hole 9. When the lifting plate 11 rises to the level of the discharge hole 10, the soil or sand will flow into the ecological planting layer 6 and the sand and gravel layer 5 through the discharge hole 10, and backfill the ecological planting layer 6 and the sand and gravel layer 5 with soil or sand. At the same time, the bottom of the filter trough 2 and the collecting filter plate 7 are cleaned, thus ensuring the long-term continuous use of the ecological filter bed.
Claims
1. A buried ecological filter bed for water treatment, characterized in that: The system includes a fixed base (1), a filter groove (2) on the upper surface of the fixed base (1), a filter support plate (3) fixedly connected to the wall of the filter groove (2), a stone layer (4) on the upper surface of the filter support plate (3), a sand and gravel layer (5) on the upper surface of the stone layer (4), an ecological planting layer (6) on the upper surface of the sand and gravel layer (5), a fixed cylinder (16) fixedly connected to the filter support plate (3), a collecting filter plate (7) fixedly installed at the bottom of the filter groove (2), a lifting groove (8) on the upper surface of the fixed base (1), a feed hole (9) through the bottom wall of the lifting groove (8), a discharge hole (10) through the top wall of the lifting groove (8), a lifting plate (11) slidably connected inside the lifting groove (8), and a connecting rod (12) fixedly connected to the upper surface of the lifting plate (11).
2. The buried ecological filter bed for water treatment according to claim 1, characterized in that: The upper end of the connecting rod (12) extends through to the outside of the fixed base (1), and a lifting handle (14) is fixedly connected to the upper end of the connecting rod (12).
3. The buried ecological filter bed for water treatment according to claim 1, characterized in that: The bottom of the lifting trough (8) is fixedly connected to an elastic rubber block (15), and the elastic rubber block (15) coincides with the opening of the feed hole (9).
4. A buried ecological filter bed for water treatment according to claim 1, characterized in that: The feed hole (9) and the discharge hole (10) are connected to the filter tank (2) at the ends away from the lifting trough (8). The feed hole (9) is connected to the filter tank (2) above the collecting filter plate (7). The discharge hole (10) is connected to the filter tank (2) above the ecological planting layer (6).
5. A buried ecological filter bed for water treatment according to claim 1, characterized in that: The fixed cylinder (16) is provided with both ends through, and the upper end of the fixed cylinder (16) passes through the filter support plate (3), the stone layer (4), the sand and gravel layer (5) and the ecological planting layer (6) in sequence and extends upward to the outside of the fixed seat (1).
6. A buried ecological filter bed for water treatment according to claim 1, characterized in that: A discharge pipe (13) is fixedly installed on the bottom wall of the filter tank (2). One end of the discharge pipe (13) extends through to the outside of the fixed base (1), and the discharge pipe (13) is connected to the filter tank (2) located below the collecting filter plate (7).
7. A buried ecological filter bed for water treatment according to claim 1, characterized in that: The collecting filter plate (7) is arranged in a semi-funnel shape, and the outer wall of the collecting filter plate (7) is connected to the four inner walls of the filter tank (2).