A rain garden overflow device capable of adjusting water volume in layers

Abstract

The present invention discloses a rain garden overflow device capable of allocating water in layers, belonging to the field of rainwater treatment technology, and comprising a water storage tank, a first filtering structure, and a diversion structure; the water storage tank is arranged under the surface of a plantation, and its interior includes water storage chambers arranged in sequence, and the water storage chambers are arranged at intervals from top to bottom; the first filtering structure is arranged at the top of the water storage tank and is connected to the water storage tank; the diversion structure is arranged in the water storage chamber, and its end extends into the soil. The present invention divides the water storage tank into multiple water storage chambers from top to bottom, and arranges diversion structures in the water storage chambers. The elevation difference between the diversion structures is used to irrigate the soil at different depths, and the water storage volume of each water storage chamber is controlled by controlling its volume, thereby controlling the irrigation volume at different depths of the soil. The two cooperate to achieve the distribution of water at each level according to the thickness of the soil layer and water demand, thereby achieving the purpose of soil water saturation.

Description

Technical Field

[0001] The invention belongs to the technical field of rainwater treatment, and in particular relates to a rain garden overflow device capable of adjusting water volume in layers. Background Art

[0002] A rain garden is a naturally formed or artificially excavated shallow green space that is used to collect and absorb rainwater from roofs or the ground. Through the combined action of plants and sand, the rainwater is purified and gradually seeps into the soil, conserving groundwater or replenishing urban water such as landscape water.

[0003] Traditional rain gardens typically rely on artificial watering to meet site moisture needs. This prevents effective rainwater retention, and due to inconsistent rainfall, water drainage is mostly distributed at the surface, unable to penetrate deep into the soil, resulting in insufficient water content at depth. In arid regions, rainwater collection systems used in traditional rain gardens are often limited by rainfall, lacking a rational method for storage and utilization, and effective irrigation, which can effectively maintain soil moisture. Furthermore, soil water requirements vary at different depths, and conventional rain gardens cannot effectively control water distribution within the soil, making it difficult to achieve soil saturation. Using traditional irrigation to achieve soil saturation results in significant water waste. Summary of the Invention

[0004] The purpose of the present invention is to provide a rain garden overflow device that can allocate water in layers, so as to solve the problems in the above-mentioned background technology that rainwater cannot be effectively retained, moisture cannot penetrate into the soil layer, the distribution of water in the soil cannot be effectively controlled, and traditional irrigation achieves soil water saturation and wastes water resources.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A rain garden overflow device capable of allocating water in layers comprises a water storage tank, a first filtering structure and a diversion structure; the water storage tank is arranged below the surface of a plantation, and comprises water storage chambers interconnected in sequence, the water storage chambers being spaced apart from top to bottom; the first filtering structure is arranged at the top of the water storage tank and is in communication with the water storage tank; the diversion structure is arranged in the water storage chamber, and its end extends into the soil.

[0007] Furthermore, a partition is provided in the water storage tank to divide the water storage chambers and the overflow chambers. The top of the partition is provided above the interior of the water storage tank, and the bottom is bent toward one side of the water storage tank to form a bent portion, and the bent portion is fixedly connected to the inner wall of the water storage tank.

[0008] Furthermore, the partition includes a first partition, a second partition and a third partition. The first partition, the second partition and the third partition are arranged horizontally at intervals, and the heights of the bending parts of the three are successively reduced to form a first water storage chamber, a second water storage chamber and a third water storage chamber from top to bottom.

[0009] Furthermore, there is a gap between the third baffle and the other side of the water storage tank, forming an overflow chamber.

[0010] Furthermore, it also includes an overflow pipe, one end of which is connected to the overflow chamber, and the other end is connected to the external water reservoir.

[0011] Furthermore, it also includes a water supply pipe, one end of which is arranged above the inside of the water storage tank and the other end extends out of the ground.

[0012] Furthermore, a second filter structure is provided between the first filter structure and the water storage tank, and the second filter structure is non-woven fabric.

[0013] Furthermore, a third filter structure is provided at the bottom of the water storage tank, and the third filter structure is communicated with the overflow chamber.

[0014] Furthermore, the first filter structure and the third filter structure are both replaceable filter tanks, and filter cores are arranged inside the replaceable filter tanks; the guide structure is a sponge strip.

[0015] Furthermore, the top of the third barrier is higher than the second barrier and is bent toward the second water storage chamber.

[0016] The present invention has the following beneficial effects:

[0017] 1. The present invention provides a rain garden overflow device capable of adjusting water volume in layers. The device divides a water storage tank into multiple water storage chambers from top to bottom, and provides a diversion structure in the water storage chamber. The elevation difference between the diversion structures is used to irrigate soil at different depths. The volume of each water storage chamber is controlled to control the water storage capacity, thereby controlling the irrigation amount at different soil depths. The two work together to allocate water at each level according to soil layer thickness and water demand, thereby achieving soil water saturation.

[0018] 2. The present invention provides a rain garden overflow device that can allocate water in layers, which integrates filtration, water storage, and drainage. It has a simple structure and occupies a small area. It reduces rainfall evaporation while enhancing rainwater storage on the site.

[0019] 3. The present invention provides a rain garden overflow device that can allocate water in layers, a first filter structure and a second filter structure, which remove impurities in rainwater, ensure the effective transportation of subsequent water flow, and avoid blockage and siltation in the water storage tank 1; and provide protection for the subsequent transportation of water into the soil layer.

[0020] 4. The present invention provides a rain garden overflow device that can allocate water in layers. A third filter structure is provided at the bottom of the overflow chamber. When there is sufficient moisture in the deep soil layer, part of the stored water slowly seeps down through the third filter structure. When the stored water volume is too large, it flows to an external water reservoir through the overflow pipe.

[0021] 5. The present invention provides a rain garden overflow device that can allocate water in layers. When the water storage tank is insufficient, water is added through the water supply pipe. When the first water storage chamber is full, the stored water will overflow to the second water storage chamber, the third water storage chamber and the overflow chamber in sequence, and then be discharged through the third filter structure or the overflow pipe. The overflow pipe and the water supply pipe serve as the connection port for external storage and transportation. By controlling the storage and replenishment of water flow, the soil moisture content of the site can be made to reach the optimal appropriate value.

[0022] 6. The present invention provides a rain garden overflow device that can adjust the water volume in layers, which can achieve soil water saturation at different depths, avoid traditional manual irrigation, save water resources, and reduce irrigation labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the overall structure of the overflow device involved in the first embodiment of the present invention;

[0024] Figure 2 It is a cross-sectional view of the overflow device involved in the present invention;

[0025] Figure 3 It is a schematic diagram of the overall structure of the overflow device involved in the second embodiment of the present invention.

[0026] In the figure: 1-water storage tank, 2-first partition, 3-second partition, 4-third partition, 5-first filter structure, 6-guiding structure, 7-overflow pipe, 8-water supply pipe, 9-second filter structure, 10-third filter structure. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] In a first embodiment, if Figure 1As shown, the present invention provides a rain garden overflow device capable of adjusting water volume in layers, comprising a water storage tank 1, a first filtering structure 5, a diversion structure 6, an overflow pipe 7, a water supply pipe 8 and a third filtering structure 10; the water storage tank 1 is arranged under the surface of the plantation, and its interior includes a plurality of water storage chambers from top to bottom; the first filtering structure 5 is arranged on the top of the water storage tank 1 and is connected to the water storage tank 1 to screen out impurities in rainwater, thereby ensuring the effective transportation of subsequent water flow and avoiding blockage and siltation in the water storage tank 1; one end of the diversion structure 6 is arranged in the water storage chamber, and the other end extends into the soil, and the water stored in the water storage chamber enters the soil through the diversion structure 6 to realize watering of plants, and the diversion structure 6 is arranged corresponding to the water storage chamber, and the elevation difference between the ends of the diversion structure 6 is used to realize watering of soils of different depths. Irrigation is carried out by controlling the water storage volume of each water storage chamber and irrigating with different water volumes according to the depth of the soil, which is more conducive to plant growth. The two work together to distribute water volumes at various levels according to the thickness of the soil layer and water demand, thereby achieving the purpose of soil water saturation; the overflow pipe 7 is connected to the water storage tank 1, and its other end is connected to the external water storage tank. When the water volume of the water storage tank 1 is too much, the water flows into the external water storage tank through the overflow pipe 7; the water supply pipe 8 is connected to the water storage tank 1, and its other end extends out of the ground for artificial irrigation. When there is a lack of water in the water storage tank 1, water can be added artificially through the water supply pipe 8; the third filter structure 10 is arranged at the bottom of the water storage tank 1. When there is sufficient water in the deep soil, part of the stored water slowly seeps down through the third filter structure 10. When the water volume is too large, it flows to the external water storage tank through the overflow pipe 7.

[0029] Water storage tank 1 is located in a low-lying area within the plantation. It is a vertically arranged, elongated cavity with open ends at its top and bottom. A baffle is installed inside water storage tank 1, dividing it into multiple water storage chambers. Each of these chambers is open at the top. The baffle's top is positioned above the interior of water storage tank 1, and its bottom is bent toward the side of water storage tank 1, forming a curved portion that is securely connected to the inner wall of water storage tank 1.

[0030] Multiple barriers can be set in the water storage tank 1, including but not limited to the following two implementations. Figure 2As shown, the baffles include a first baffle 2, a second baffle 3, and a third baffle 4. The first, second, and third baffles 2, 3, and 4 are arranged horizontally and spaced apart, with their bent portions arranged at decreasing heights, forming, from top to bottom, a first water storage chamber, a second water storage chamber, and a third water storage chamber. The water storage volume in each water storage chamber is controlled by the baffle placement and the height of the bent portions. A gap exists between the third baffle 4 and the other side of the water storage tank 1, forming an overflow chamber. The bottom of the overflow chamber is connected to the third filter structure 10. When the first water storage chamber is full, the stored water overflows into the second, third, and overflow chambers in sequence, and is then discharged through the third filter structure 10 or the overflow pipe 7. Preferably, the top of the third baffle 4 is higher than the second baffle 3 and bends toward the second water storage chamber to facilitate the outflow of rainwater from the overflow chamber. The tops of the first and second baffles 2 and 3 are flush.

[0031] The top surface of the first filter structure 5 is elevated above the ground, and its dimensions are compatible with those of the top surface of the water storage tank 1. The first filter structure 5 is a replaceable filter tank, which contains a filter element made of sand or other filter material. Preferably, a second filter structure 9 is provided between the first filter structure 5 and the water storage tank 1. The second filter structure 9 is made of non-woven fabric, which can effectively remove particulates from the water, ensuring that the water is subsequently transported into the soil layer, further improving the filtration effect.

[0032] The diversion structure 6 is a sponge strip, which is arranged in correspondence with the water storage chamber. The sponge strip drains the water in the water storage chamber in layers, evenly irrigating the shallow, medium, and deep soil layers. The bottom of the sponge strip is arranged at the bottom of the water storage chamber. When water enters the bottom of the sponge strip, it is absorbed and drained from the bottom to the soil layer, ensuring uniform absorption of the soil layer and ensuring the growth of plants on the site. The effect of layered overflow is achieved according to the moisture conditions required by different soil layers.

[0033] The overflow pipe 7 is preferably arranged in communication with the overflow chamber, and is preferably arranged in the middle of the overflow chamber.

[0034] One end of the water supply pipe 8 is installed in the water storage tank 1, above the first water storage chamber. When the water storage tank 1 is insufficient, water is added through the water supply pipe 8. The overflow pipe 7 and the water supply pipe 8 serve as the connection port for external storage and delivery. By controlling the storage and replenishment of water flow, the soil moisture content of the site can be maintained at the optimal value.

[0035] The size of the third filter structure 10 is adapted to the bottom size of the water storage tank 1 and is connected to the overflow chamber. It is preferably a replaceable filter tank with an L-shaped longitudinal section. A filter core is arranged inside the replaceable filter tank. The filter core is sand or other filter materials. The top surface of the vertical part of the L-shaped replaceable filter tank is arranged corresponding to the overflow chamber.

[0036] In a second embodiment, if Figure 3As shown, the present invention provides a rain garden overflow device capable of adjusting water volume in layers, comprising a water storage tank 1, a first filtering structure 5 and a diversion structure 6.

[0037] Water storage tank 1 is located beneath the surface of the plantation and comprises multiple water storage chambers from top to bottom. Partitions are installed within water storage tank 1 to divide water storage tank 1 into multiple water storage chambers. Each water storage chamber is open at the top. The partitions include a first partition 2 and a second partition 3. The first partition 2 and the second partition 3 are arranged horizontally and spaced apart to divide water storage tank 1 into the first, second, and third water storage chambers, respectively. The bottom of water storage tank 1 is sealed to prevent water in the third water storage chamber from leaking from the bottom. The tops of the first partition 2 and the second partition 3 are at the same height.

[0038] The first filtering structure 5 and the flow guiding structure 6 are the same as those in the first embodiment.

[0039] Compared to the first embodiment, this embodiment modifies the structure of the water storage tank 1, eliminating the overflow pipe 7, water supply pipe 8, and third filter structure 10. The overflow chamber within the water storage tank 1 has been eliminated, reducing the number of water storage chambers. Both the first baffle 2 and the second baffle 3 have vertical plates at their tops. This embodiment offers a simpler structure, facilitating installation and reducing manufacturing costs. It is more suitable for smaller sites and improves the device's economic efficiency.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rain garden overflow device capable of adjusting water volume in layers, characterized by: The invention comprises a water storage tank (1), a first filtering structure (5) and a diversion structure (6); the water storage tank (1) is arranged under the surface of the plantation, and the interior of the water storage tank comprises water storage chambers which are connected in sequence, and the water storage chambers are arranged in intervals from top to bottom; the first filtering structure (5) is arranged on the top of the water storage tank (1) and is connected to the water storage tank (1); the diversion structure (6) is arranged in the water storage chamber, and its end extends into the soil; A baffle is provided in the water storage bin (1), and each water storage chamber and overflow chamber is divided by the baffle. The top of the baffle is provided above the interior of the water storage bin (1), and the bottom is bent toward one side of the water storage bin (1) to form a bent portion. The bent portion is fixedly connected to the inner wall of the water storage bin (1); The baffle comprises a first baffle (2), a second baffle (3) and a third baffle (4), wherein the first baffle (2), the second baffle (3) and the third baffle (4) are arranged horizontally and spaced apart, and the heights of the bending portions of the three baffles are successively reduced, forming a first water storage chamber, a second water storage chamber and a third water storage chamber from top to bottom; A third filter structure (10) is provided at the bottom of the water storage tank (1), and the third filter structure (10) is communicated with the overflow chamber; The top of the third baffle (4) is higher than the second baffle (3) and is bent toward the second water storage chamber.

2. A rain garden overflow device capable of adjusting water volume in layers according to claim 1, characterized in that: There is a gap between the third baffle (4) and the other side of the water storage tank (1), forming an overflow chamber.

3. The rain garden overflow device capable of adjusting water volume in layers according to claim 2, characterized in that: It also includes an overflow pipe (7), one end of which is in communication with the overflow chamber, and the other end of which is connected to an external water reservoir.

4. The rain garden overflow device capable of adjusting water volume in layers according to claim 1, characterized in that: It also includes a water supply pipe (8), one end of which is arranged above the interior of the water storage tank (1) and the other end of which extends out of the ground.

5. The rain garden overflow device capable of adjusting water volume in layers according to claim 1, characterized in that: A second filter structure (9) is provided between the first filter structure (5) and the water storage tank (1), and the second filter structure (9) is made of non-woven fabric.

6. The rain garden overflow device capable of adjusting water volume in layers according to claim 1, characterized in that: The first filter structure (5) and the third filter structure (10) are both replaceable filter tanks, with filter cores provided inside the replaceable filter tanks; the flow guide structure (6) is a sponge strip.

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