Monitoring and sampling device for permeable layer of sponge city LID facility

Abstract

The utility model relates to the technical field of sponge city construction, in particular to a monitoring and sampling device for a permeable layer of an LID facility in a sponge city, which comprises a main body pipe for guiding rainwater to permeate into the main body pipe from surrounding soil; the metal water taking hopper is used for collecting the infiltrated rainwater sample; the magnetic suction butt joint part is used for realizing stable installation and convenient disassembly of the metal water taking hopper; the lifting rope is used for lifting the metal water taking hopper to the ground for sampling operation through an external pull rope during sampling. According to the monitoring and sampling device for the permeable layer of the sponge city LID facility, through the synergistic effect of the main body pipe, the metal water taking hopper, the magnetic attraction butt joint part and the lifting rope, operation is convenient and fast, the real-time observation of the rainwater permeation process in the permeable layer of the sponge city LID facility can be achieved, a water sample in the permeable layer can be accurately obtained, and the water quality of the permeable layer is improved. Therefore, the accuracy and representativeness of the monitoring data are improved, and the reliability and scientificity of hydrological data acquisition of the sponge city are improved.

Description

Technical Field

[0001] This utility model relates to the field of sponge city construction technology, and in particular to a monitoring and sampling device for the permeable layer of LID facilities in sponge cities. Background Technology

[0002] In the construction of sponge cities, low-impact development (LID) facilities such as rain gardens and bioretention ponds are widely used for rainwater infiltration, storage, and purification. To assess their hydrological and water quality treatment performance, it is necessary to monitor and sample rainwater infiltration in the permeable layer. However, existing technologies lack a convenient device capable of on-site observation and precise sampling, resulting in cumbersome sampling processes, insufficient data representativeness, and affecting the accuracy of assessment results. Therefore, this invention provides a monitoring and sampling device for the permeable layer of LID facilities in sponge cities. Utility Model Content

[0003] Therefore, it is necessary to provide a monitoring and sampling device for the permeable layer of LID facilities in sponge cities to address the aforementioned technical problems.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: A monitoring and sampling device for the permeable layer of LID (Low Infiltration Disposal) facilities in sponge cities, comprising: a main tube, which is vertically buried in the permeable layer of the LID facility, and the main tube is provided with an array of multiple permeable blind pipe holes for guiding rainwater to infiltrate from the surrounding soil into the interior of the main tube; a metal water collection bucket, which is disposed inside the main tube for collecting infiltrated rainwater samples; a magnetic docking part, which is disposed on the inner wall of the main tube and magnetically connected to the metal water collection bucket for achieving stable installation and convenient disassembly of the metal water collection bucket; and a lifting rope, one end of which is fixed to the top of the metal water collection bucket and the other end extends to the ground for lifting the metal water collection bucket to the ground for sampling operations by pulling the external rope.

[0005] As a further improvement of this invention, the main tube is made of PVC material.

[0006] As a further embodiment of this utility model, the permeable blind pipe array is arranged along the axial direction of the main pipe, and the arrangement position of the permeable blind pipe array corresponds to the preset target height. Each permeable blind pipe array includes multiple permeable blind pipe holes, and the permeable blind pipe holes are distributed in a ring on the outer wall of the main pipe. The diameter of the permeable blind pipe holes is 2-5mm, and the spacing is 10-15cm.

[0007] As a further embodiment of this utility model, a drainage pipe is also included. The drainage pipe is located below the main pipe and is used to drain residual water during non-rainy periods or after sampling to prevent water sample retention from affecting the accuracy of subsequent sampling. The bottom of the main pipe is provided with a drainage interface for connecting the drainage pipe to facilitate the drainage of residual water.

[0008] As a further improvement of this utility model, the inner wall of the main tube is also provided with a longitudinal guide groove.

[0009] As a further improvement of this utility model, the side of the metal water-collecting bucket is provided with a guide key that is adapted to the longitudinal guide groove.

[0010] As a further improvement of this utility model, the top of the main tube is also provided with a sealing cover. The sealing cover is fixed to the main tube by a pressure cap to prevent surface debris from entering. The sealing cover is provided with a transparent viewing window to facilitate real-time visual inspection of the water seepage status inside the main tube.

[0011] As a further embodiment of this utility model, the top of the metal water-collecting bucket is provided with a funnel-shaped guide surface, the interior of the metal water-collecting bucket is provided with a water sample collection cavity that communicates with the funnel-shaped guide surface, the bottom of the metal water-collecting bucket is provided with a water outlet pipe, the water sample collection cavity is connected to the water outlet pipe, a ball valve is provided on the water outlet pipe, and an arc-shaped magnetic connecting part is provided on the outer wall of the metal water-collecting bucket, the arc-shaped magnetic connecting part being magnetically connected to the magnetic attraction docking part.

[0012] As a further embodiment of this utility model, the magnetic attraction docking part includes an arc-shaped groove and a permanent magnet fitted into the arc-shaped groove.

[0013] As a further improvement of this invention, it also includes a manual winding device that is installed on the ground and connected to the lifting rope.

[0014] The advantages and beneficial effects of this utility model are as follows: The monitoring and sampling device for the permeable layer of LID facilities in sponge cities provided by this utility model is easy to operate through the synergistic effect of the main tube, metal water intake bucket, magnetic docking part and lifting rope. It can realize real-time observation of the rainwater infiltration process in the permeable layer of LID facilities in sponge cities and accurately obtain water samples in the permeable layer, thereby improving the accuracy and representativeness of monitoring data, and thus improving the reliability and scientific nature of hydrological data collection in sponge cities. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a monitoring and sampling device for the permeable layer of LID facilities in sponge cities according to the present invention.

[0016] Figure 2 This is a top view of the sealing cap of this utility model.

[0017] Figure 3 This is a top view of the metal water-collecting bucket of this utility model.

[0018] Figure 4 This is a top view of the main tube of this utility model.

[0019] Figure 5 This is a side view of the main tube of this utility model.

[0020] Figure reference numerals: 1. LID facility permeable layer; 2. permeable blind pipe hole; 3. main pipe; 4. sealing cap; 5. transparent viewing window; 6. metal water intake hopper; 7. guide key; 8. longitudinal guide groove; 9. water sample collection chamber; 10. water outlet pipe; 11. ball valve; 12. drainage interface; 13. drainage pipe; 14. manual winding device; 15. funnel-shaped guide surface; 16. arc-shaped magnetic connection part; 17. arc-shaped groove; 18. permanent magnet. Detailed Implementation

[0021] The embodiments of this application will now be described in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. Furthermore, the following embodiments and features can be combined with each other unless otherwise specified. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0022] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0023] To address the problems of inconvenient sampling and inaccurate monitoring data in existing technologies, this application provides a monitoring and sampling device integrating a main pipe 3, a metal water intake hopper 6, a magnetic docking part, and a lifting rope, applied to the permeable layer 1 of LID (Light Identification and Disposal) facilities in sponge cities. (See attached diagram.) Figure 1-5The device includes: a main tube 3, which is vertically buried in the permeable layer 1 of the LID facility, and has an array of multiple permeable blind pipe holes to guide rainwater from the surrounding soil into the interior of the main tube 3; a metal water collection hopper 6, which is disposed inside the main tube 3 to collect infiltrated rainwater samples; a magnetic docking part, which is disposed on the inner wall of the main tube 3 and magnetically connected to the metal water collection hopper 6 to achieve stable installation and convenient disassembly of the metal water collection hopper 6; and a lifting rope, one end of which is fixed to the top of the metal water collection hopper 6 and the other end extends to the ground, for lifting the metal water collection hopper 6 to the ground for sampling operations by pulling the rope externally.

[0024] In this embodiment, the main tube 3 is made of PVC material.

[0025] In this embodiment, the permeable blind pipe array is arranged along the axial direction of the main tube 3, and the arrangement position of the permeable blind pipe array corresponds to the preset target height. Each permeable blind pipe array includes multiple permeable blind pipe holes 2, and the permeable blind pipe holes 2 are distributed in a ring on the outer wall of the main tube 3. The diameter of the permeable blind pipe holes 2 is 2-5mm, and the spacing is 10-15cm.

[0026] In this embodiment, a drain pipe 13 is also included. The drain pipe 13 is located below the main body pipe 3 and is used to drain residual water during non-rainy periods or after sampling to prevent water sample retention from affecting the accuracy of subsequent sampling. The bottom of the main body pipe 3 is provided with a drain interface 12 for connecting the drain pipe 13 to facilitate the drainage of residual water.

[0027] In this embodiment, the main pipe 3, as the core structure of the device, is made of PVC material, possessing good corrosion resistance and pressure resistance. Its diameter is set to 200mm, and its length can be set according to the depth of the LID facility's permeable layer 1, generally 1.5–2.5m. The outer wall of the pipe is provided with a ring-shaped array of permeable blind pipe holes, and the arrangement of these holes corresponds to a preset target height. For example, three permeable blind pipe hole arrays are arranged axially on the outer wall of the main pipe 3, at heights of 0.5m, 1.0m, and 1.5m respectively. Each permeable blind pipe hole array includes multiple permeable blind pipe holes 2, with a diameter of 2–5mm and a spacing of 10–15cm. For example, the hole diameter is set to 3mm and the spacing to 12cm. Laser drilling is used to ensure uniform rainwater infiltration. A drainage interface 12 is provided at the bottom of the pipe for connecting to an external drainage pipe 13 to facilitate the drainage of residual water.

[0028] In this embodiment, the inner wall of the main tube 3 is also provided with a longitudinal guide groove 8.

[0029] In this embodiment, the side of the metal water hopper 6 is provided with a guide key 7 that is adapted to the longitudinal guide groove 8.

[0030] In this embodiment, through the synergistic effect of the longitudinal guide groove 8 and the guide key 7, for example, two guide keys 7 are provided on the outer wall of the metal water hopper 6, and two matching longitudinal guide grooves 8 are provided at corresponding positions on the inner wall of the main body tube 3, so as to ensure that the metal water hopper 6 moves stably vertically within the main body tube 3, and further prevent the metal water hopper 6 from rotating and shifting.

[0031] In this embodiment, the top of the main tube 3 is also provided with a sealing cover 4. The sealing cover 4 is fixed to the main tube 3 by a pressure cover to prevent surface debris from entering. The sealing cover 4 is provided with a transparent viewing window 5 to facilitate real-time visual inspection of the water seepage status inside the main tube 3.

[0032] In this embodiment, by providing a sealing cover 4, it is possible to prevent surface debris from entering. At the same time, the sealing cover 4 is easily disassembled and reassembled by the pressure cap fixing method between the sealing cover 4 and the main tube 3, so as to carry out the subsequent operation of removing the metal water collection bucket 6. In addition, by providing a transparent viewing window 5 on the sealing cover 4, it is easy to visually inspect the water seepage status inside the main tube 3 in real time. Furthermore, in order to prevent the transparent viewing window 5 from becoming dirty or blurry due to long-term use and affecting the observation effect, a hydrophobic coating (such as polysiloxane) is applied to the transparent viewing window 5 involved in this application to improve clarity.

[0033] In this embodiment, the top of the metal water hopper 6 is provided with a funnel-shaped guide surface 15, the interior of the metal water hopper 6 is provided with a water sample collection chamber 9 that communicates with the funnel-shaped guide surface 15, the bottom of the metal water hopper 6 is provided with a water outlet pipe 10, the water sample collection chamber 9 is connected to the water outlet pipe 10, the water outlet pipe 10 is provided with a ball valve 11, and the outer wall of the metal water hopper 6 is provided with an arc-shaped magnetic connection part 16, which is magnetically connected to the magnetic attraction docking part.

[0034] In this embodiment, the metal water collection hopper 6 can be made of 304 stainless steel, and is cylindrical in shape with a diameter of 180mm and a height of 200mm. An arc-shaped magnetic connecting part 16 (i.e., an arc-shaped magnetic metal plate) is provided on the lower outer wall of the metal water collection hopper 6. This, in conjunction with the magnetic attraction docking part, enables rapid positioning and installation. Its working principle is as follows: when the metal water collection hopper 6 slides along the longitudinal guide groove 8 inside the main tube 3 to the preset target height, the arc-shaped magnetic connecting part 16 automatically aligns with the corresponding magnetic attraction docking part, and the magnetic lines of force close to generate an adsorption force (measured adsorption force ≥ 50N), achieving tool-free rapid positioning. The interior of the metal water collection hopper 6 is provided with a water sample collection chamber 9, and a water outlet pipe 10 is provided at its bottom for easy drainage after sampling. A funnel-shaped guide surface 15 is provided on the top of the metal water intake hopper 6. For example, the diameter of the funnel-shaped guide surface 15 gradually decreases from Φ180mm to Φ150mm. This enables the directional flow of rainwater from the main pipe 3 to the metal water intake hopper 6, while ensuring the hydraulic connectivity of the metal water intake hopper 6 when it is installed at different heights.

[0035] In this embodiment, the magnetic attraction docking part includes an arc-shaped groove 17 and a permanent magnet 18 fitted into the arc-shaped groove 17.

[0036] In this embodiment, the magnetic attraction docking part is set on the inner wall of the main tube 3. A permanent magnet 18 is used to form a magnetic attraction connection with the arc-shaped magnetic metal plate below the outer wall of the metal water intake hopper 6 to ensure that the metal water intake hopper 6 remains stable and does not shift during the seepage process. Multiple magnetic attraction docking parts are set. It should be noted that the arrangement position of the magnetic attraction docking parts corresponds to the position of the arc-shaped magnetic connection part 16 when the metal water intake hopper 6 is sampling at the preset target position. That is, the arrangement height of the permeable blind pipe hole array set at the preset target position of the main tube 3 is higher than the arrangement position of the magnetic attraction docking parts. At the same time, in order to facilitate the collection of water samples, the arrangement height of the permeable blind pipe hole array set at the preset target position of the main tube 3 is also slightly higher than the top of the metal water intake hopper 6 (0.5~1cm), so that the metal water intake hopper 6 can be installed at different preset target heights, thereby adapting to the sampling needs of different permeation layer depths. The magnetic docking part adopts a modular embedded structure, specifically: an arc-shaped groove 17 is opened in the inner wall of the main tube 3, and a permanent magnet 18 is embedded in the arc-shaped groove 17. The permanent magnet 18 can be a stainless steel-coated NdFeB (neodymium iron boron) magnet with a size of Φ15mm×5mm and a magnetic induction intensity ≥0.45T. The groove is embedded in the inner wall of the main tube 3 to a depth of 3-5mm, and the surface is sealed with a polyurethane waterproof layer to ensure long-term buried stability.

[0037] In this embodiment, a manual winding device 14 is also provided on the ground and connected to the lifting rope. By providing the manual winding device 14 (such as a winch), after sampling is completed, the metal water collection bucket 6 is lifted to the ground along the inside of the main tube 3, which facilitates safe sampling by operators and subsequent water quality testing.

[0038] In this embodiment, the working principle of this utility model is as follows: During rainfall, rainwater enters the soil through the LID facility infiltration layer 1, and then enters the pipe through the permeable blind pipe hole 2 on the side wall of the main pipe 3. The metal water collection bucket 6 is fixed at a preset target height by a magnetic docking part to collect rainwater infiltrating at different depths. The operator can visually inspect the seepage status inside the main pipe 3 in real time through the transparent viewing window 5, and easily monitor the water quality characteristics such as color and turbidity inside the main pipe 3 in real time to determine whether sampling is necessary. When sampling is required, the operator uses the manual winding device 14 to drive the lifting rope to slowly pull the metal water collection bucket 6 to the ground, uses a standard sampling bottle to collect the water sample, and then puts the metal water collection bucket 6 back in its original position. After the collection is completed, the ball valve 11 is opened to drain the residual water to prevent interference with the next sampling.

[0039] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications or substitutions should be considered within the protection scope of the present invention.

Claims

1. A monitoring and sampling device for the permeable layer of LID (Light Injection Discharge) facilities in sponge cities, characterized in that, include: The main pipe is vertically buried in the permeable layer of the LID facility. The main pipe is provided with an array of multiple permeable blind pipe holes to guide rainwater from the surrounding soil into the interior of the main pipe. A metal water collection bucket, which is installed inside the main tube, is used to collect infiltrated rainwater samples; A magnetic docking part is provided on the inner wall of the main tube and is magnetically connected to the metal water intake bucket to achieve stable installation and convenient disassembly of the metal water intake bucket. A lifting rope, one end of which is fixed to the top of the metal water collection bucket and the other end extends to the ground, is used to lift the metal water collection bucket to the ground for sampling operations by pulling the rope externally.

2. The monitoring and sampling device for the permeable layer of LID (Light Ingress Displacement) facilities in sponge cities according to claim 1, characterized in that, The main tube is made of PVC material.

3. The monitoring and sampling device for the permeable layer of LID (Light Ingress Displacement) facilities in sponge cities according to claim 1, characterized in that, The permeable blind pipe array is arranged along the axial direction of the main pipe, and the arrangement position of the permeable blind pipe array corresponds to the preset target height. Each permeable blind pipe array includes multiple permeable blind pipe holes, and the permeable blind pipe holes are distributed in a ring on the outer wall of the main pipe. The diameter of the permeable blind pipe holes is 2-5mm, and the spacing is 10-15cm.

4. A monitoring and sampling device for the permeable layer of LID (Light Ingress Displacement) facilities in sponge cities according to claim 1, characterized in that, It also includes a drain pipe, which is located below the main pipe and is used to drain residual water during non-rainy periods or after sampling to prevent water samples from stagnating and affecting the accuracy of subsequent sampling. The bottom of the main pipe is provided with a drain interface for connecting the drain pipe to facilitate the drainage of residual water.

5. A monitoring and sampling device for the permeable layer of LID (Light Ingress Displacement) facilities in sponge cities according to claim 1, characterized in that, The inner wall of the main tube is also provided with a longitudinal guide groove.

6. A monitoring and sampling device for the permeable layer of LID (Light Ingress Displacement) facilities in sponge cities according to claim 5, characterized in that, The side of the metal water intake bucket is provided with a guide key that is adapted to the longitudinal guide groove.

7. A monitoring and sampling device for the permeable layer of LID (Light Injection Discharge) facilities in sponge cities according to claim 5, characterized in that, The top of the main pipe is also provided with a sealing cap, which is fixed to the main pipe by a pressure cap to prevent surface debris from entering. The sealing cap is provided with a transparent viewing window to facilitate real-time visual inspection of the water seepage status inside the main pipe.

8. A monitoring and sampling device for the permeable layer of LID (Light Ingress Displacement) facilities in sponge cities according to claim 1, characterized in that, The top of the metal water-collecting hopper is provided with a funnel-shaped guide surface, the interior of the metal water-collecting hopper is provided with a water sample collection cavity that communicates with the funnel-shaped guide surface, the bottom of the metal water-collecting hopper is provided with a water outlet pipe, the water sample collection cavity is connected to the water outlet pipe, a ball valve is provided on the water outlet pipe, and an arc-shaped magnetic connection part is provided on the outer wall of the metal water-collecting hopper, the arc-shaped magnetic connection part is magnetically connected to the magnetic attraction docking part.

9. A monitoring and sampling device for the permeable layer of LID (Light Injection Discharge) facilities in sponge cities according to claim 8, characterized in that, The magnetic attraction docking part includes an arc-shaped groove and a permanent magnet fitted into the arc-shaped groove.

10. A monitoring and sampling device for the permeable layer of LID (Light Ingress Displacement) facilities in sponge cities according to claim 1, characterized in that, It also includes a manual winding device that is installed on the ground and connected to the lifting rope.

Images