A sampling device for a rainwater drainage system

Abstract

This utility model discloses a sampling device for rainwater drainage, relating to the technical field of sampling equipment. It includes a base plate and a fixed plate. Multiple support rods are connected to the base plate, with the upper ends of the support rods connected to the bottom surface of the fixed plate. Three water-collecting boxes are equidistantly connected to the bottom of the fixed plate. Each water-collecting box has a piston plate slidably connected within it. A common opening is provided at the connection point between each water-collecting box and the fixed plate. A lifting column is connected to the top surface of the piston plate. The upper ends of the three lifting columns pass through the common opening and are connected to a pressure plate. Multiple springs are connected to the bottom of the pressure plate. This utility model features three independent water-collecting boxes and sampling tubes, combined with an adjustable sliding block to change the depth of the sampling tube's insertion into the water. Only two presses are needed to sample water at different depths in the rainwater drainage, effectively improving sampling efficiency and making it convenient for use in rainy environments.

Description

Technical Field

[0001] This utility model relates to the field of sampling equipment technology, and in particular to a sampling device for rainwater and drainage bodies. Background Technology

[0002] As an important part of the urban water cycle, the water quality of stormwater directly reflects the impact of urban ecological environment and human activities on the water environment. During the precipitation process, rainwater carries pollutants from the air, such as particulate matter, acidic substances, and heavy metals. At the same time, when it flows through the urban surface, it also collects various pollutants on the ground, including oil, garbage, and chemicals, and finally discharges into natural water bodies through stormwater drainage ditches and other facilities.

[0003] Sampling of stormwater drainage bodies has distinct characteristics. Water only flows through the stormwater drainage ditches during rainfall, allowing for the acquisition of representative samples. This presents numerous inconveniences for the sampling process, such as the need to use an umbrella, which prevents two-handed sampling, and low visibility affecting operations. Furthermore, most current sampling devices are relatively simple in design and cannot sample water at different depths in the stormwater drainage system simultaneously. Therefore, a sampling device for stormwater drainage bodies is proposed. Utility Model Content

[0004] The purpose of this invention is to solve the problems mentioned in the background art and to propose a sampling device for rainwater drainage bodies.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A sampling device for rainwater drainage includes a base plate and a fixed plate. Multiple support rods are connected to the base plate, with the upper ends of the support rods connected to the bottom surface of the fixed plate. Three water collection boxes are equidistantly connected to the bottom of the fixed plate. A piston plate is slidably connected to each water collection box. A common opening is provided at the connection point between each water collection box and the fixed plate. A lifting column is connected to the top surface of the piston plate. The upper ends of the three lifting columns pass through the common opening and are connected to a pressure plate. Multiple springs are connected to the bottom of the pressure plate, with the lower end of each spring connected to the fixed plate. An inlet pipe and an outlet pipe are connected to the bottom of each water collection box. A sampling tube is connected to the end of the inlet pipe furthest from the water collection box. Three adjustment mechanisms are provided on the base plate to control the lowering length of the three sampling tubes, enabling sampling of water at different depths.

[0006] Preferably, each of the adjustment mechanisms includes two mounting rods. The base plate has three sampling ports equidistantly spaced on the side near the water inlet pipe. The two mounting rods are respectively installed on both sides of the sampling ports. A sliding block is slidably connected through the two mounting rods. A connecting frame is connected to the bottom of the sliding block. A rotating roller is rotatably connected to the connecting frame. The end of the sampling tube away from the water inlet pipe is wound around the rotating roller. A limit unit is provided on the sliding block to fix the height of the sliding block.

[0007] Preferably, the limiting unit includes two pressing members, both ends of the sliding block are connected to rotating seats, the two pressing members are rotatably connected to the two rotating seats respectively, each rotating seat is connected to a locking block, multiple locking slots are equally spaced on the outer sides of the two mounting rods, and a torsion spring is provided at the rotatable connection between each pressing member and the rotating seat.

[0008] Preferably, the diameter of the card slot is larger than the diameter of the card block.

[0009] Preferably, a counterweight ball is connected to the end of each sampling tube furthest from the water inlet pipe.

[0010] Preferably, the sampling tube is a flexible tube, the inlet and outlet pipes are rigid tubes, and the outlet pipe has an S-shaped structure.

[0011] Preferably, a one-way valve is provided at the end of both the inlet pipe and the outlet pipe near the water pump box.

[0012] Compared with the prior art, the advantages of this utility model are: This invention features three independent water collection boxes and sampling tubes, combined with an adjustable sliding block to change the depth at which the sampling tube tip enters the water. By simply pressing twice, water samples at different depths in the storm drain can be collected at once, effectively improving sampling efficiency and making it convenient for use in rainy weather. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a cross-sectional view of the structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the adjustment mechanism in this utility model.

[0016] Figure 4 for Figure 3 Enlarged diagram of point A in the middle.

[0017] In the diagram: 1. Base plate, 2. Support rod, 3. Fixing plate, 4. Water collection box, 5. Piston plate, 6. Connecting port, 7. Lifting column, 8. Pressure plate, 9. Spring, 10. Inlet pipe, 11. Outlet pipe, 12. Sampling port, 13. Mounting rod, 14. Sliding block, 15. Connecting frame, 16. Rotating roller, 17. Sampling tube, 18. Counterweight ball, 19. Rotating seat, 20. Pressing part, 21. Locking block, 22. Locking groove. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Reference Figure 1-4 As shown, a sampling device for rainwater drainage includes a base plate 1 and a fixed plate 3. Multiple support rods 2 are connected to the base plate 1, with their upper ends connected to the bottom surface of the fixed plate 3. Three water collection boxes 4 are equidistantly connected to the bottom of the fixed plate 3. A piston plate 5 is slidably connected within each water collection box 4. A common connection port 6 is provided at the connection point between each water collection box 4 and the fixed plate 3. A lifting column 7 is connected to the top surface of the piston plate 5. The upper ends of the three lifting columns 7 pass through the connection port 6 and are connected to a pressure plate 8. Multiple springs 9 are connected to the bottom of the pressure plate 8, with the lower end of each spring 9 connected to the fixed plate 3. An inlet pipe 10 and an outlet pipe 11 are connected to the bottom of each water collection box 4. A sampling tube 17 is connected to the end of the inlet pipe 10 furthest from the water collection box 4. Three adjustment mechanisms are provided on the base plate 1 to control the lowering length of the three sampling tubes 17, enabling sampling of water at different depths.

[0020] In this embodiment, each of the adjustment mechanisms includes two mounting rods 13. The base plate 1 has three sampling ports 12 at equal intervals on the side near the water inlet pipe 10. The two mounting rods 13 are respectively installed on both sides of the sampling ports 12. A sliding block 14 is slidably connected through the two mounting rods 13. A connecting frame 15 is connected to the bottom of the sliding block 14. A rotating roller 16 is rotatably connected to the connecting frame 15. The end of the sampling tube 17 away from the water inlet pipe 10 is wound around the rotating roller 16. A limit unit is provided on the sliding block 14 to fix the height of the sliding block 14.

[0021] In this embodiment, the limiting unit includes two pressing members 20. Both ends of the sliding block 14 are connected to rotating seats 19. The two pressing members 20 are rotatably connected to the two rotating seats 19 respectively. Each rotating seat 19 is connected to a locking block 21. Multiple slots 22 are equally spaced on the outer sides of the two mounting rods 13. A torsion spring is provided at the rotatable connection between each pressing member 20 and the rotating seat 19. The presence of the torsion spring always drives the locking block 21 on the pressing member 20 to rotate towards the slot 22, fixing the sliding block 14 at any height of the mounting rod 13.

[0022] In this embodiment, the diameter of the card slot 22 is larger than the diameter of the card block 21, which facilitates the card block 21 entering the card slot 22.

[0023] In this embodiment, each sampling tube 17 is connected to a counterweight ball 18 at the end away from the water inlet pipe 10.

[0024] In this embodiment, the sampling tube 17 is a flexible tube, the inlet tube 10 and the outlet tube 11 are rigid tubes, the outlet tube 11 has an S-shaped structure, and the end of the outlet tube 11 away from the water box 4 is at a high point, which can prevent the sample bottle from collecting water.

[0025] Both the inlet pipe 10 and the outlet pipe 11 are equipped with one-way valves at the ends near the water collection box 4. The one-way valve at the inlet pipe 10 only allows water to flow from the inlet pipe 10 to the water collection box 4, and the one-way valve at the outlet pipe 11 only allows water to flow from the water collection box 4 to the outlet pipe 11.

[0026] Working process and its principle: In use, place the base plate 1 across the drainage ditch of the rain drain, then press the pressing pieces 20 on both sides of each sliding block 14 to remove the locking block 21 from the locking groove 22, releasing the sliding restriction of the sliding block 14. Slide the sliding block 14 downwards. During the descent of the sliding block 14, the sampling tube 17 rotates on the rotating roller 16, and the counterweight ball 18 drives the tube head of the sampling tube 17 to move downwards, extending into the water of the drainage ditch. According to the required sampling depth, control the descent height of the sliding block 14 so that the three sampling tubes 17 extend into the water to different depths. After reaching the designated position, release the pressing piece 20. 0. Under the action of the torsion spring, the locking block 21 re-enters the corresponding slot 22 to achieve height locking. Then, the three sample bottles can be placed below the inlet of the water outlet pipe 11. Then, press the pressure plate 8. Under the action of the one-way valve, the air in the water collection box 4 located below the piston plate 5 will be squeezed out from the water outlet pipe 11. When the pressure plate 8 is released, the piston plate 5 slides up under the action of the spring, and a negative pressure will be formed in the water collection box 4. Water will be drawn into the water collection box 4 through the sampling pipe 17 and the water inlet pipe 10. When the pressure plate 8 is pressed again, the water in the water collection box 4 will be squeezed into the sample bottle, completing the sampling work.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sampling device for rainwater drainage bodies, characterized in that, Includes a base plate (1) and a fixing plate (3). Multiple support rods (2) are connected to the base plate (1). The upper ends of the support rods (2) are connected to the bottom surface of the fixing plate (3). Three water collection boxes (4) are equidistantly connected to the bottom of the fixing plate (3). Each water collection box (4) has a piston plate (5) slidably connected within it. A common connection port (6) is provided at the connection point between each water collection box (4) and the fixing plate (3). A lifting column (7) is connected to the top surface of the piston plate (5). The three lifting columns (7)... The upper end of the tube passes through the connecting port (6) and is connected to the pressure plate (8). The bottom of the pressure plate (8) is connected to multiple springs (9). The lower end of each spring (9) is connected to the fixing plate (3). The bottom of each water box (4) is connected to the inlet pipe (10) and the outlet pipe (11). The end of the inlet pipe (10) away from the water box (4) is connected to the sampling pipe (17). The bottom plate (1) is provided with three adjustment mechanisms to control the lowering length of the three sampling pipes (17) to achieve sampling of water at different depths.

2. A sampling device for rainwater drainage bodies according to claim 1, characterized in that, Each of the adjustment mechanisms includes two mounting rods (13). The base plate (1) has three sampling ports (12) equidistantly opened on the side near the water inlet pipe (10). The two mounting rods (13) are respectively installed on both sides of the sampling ports (12). A sliding block (14) is slidably connected through the two mounting rods (13). A connecting frame (15) is connected to the bottom of the sliding block (14). A rotating roller (16) is rotatably connected to the connecting frame (15). The end of the sampling tube (17) away from the water inlet pipe (10) is wound around the rotating roller (16). A limit unit is provided on the sliding block (14) to fix the height of the sliding block (14).

3. A sampling device for rainwater drainage bodies according to claim 2, characterized in that, The limiting unit includes two pressing parts (20), and both ends of the sliding block (14) are connected to rotating seats (19). The two pressing parts (20) are rotatably connected to the two rotating seats (19) respectively. Each rotating seat (19) is connected to a locking block (21). Multiple locking slots (22) are equally spaced on the outer sides of the two mounting rods (13). A torsion spring is provided at the rotatable connection between each pressing part (20) and the rotating seat (19).

4. A sampling device for rainwater drainage bodies according to claim 3, characterized in that, The diameter of the slot (22) is larger than the diameter of the block (21).

5. A sampling device for rainwater drainage bodies according to claim 1, characterized in that, Each of the sampling tubes (17) has a counterweight ball (18) connected to the end away from the water inlet pipe (10).

6. A sampling device for rainwater drainage bodies according to claim 1, characterized in that, The sampling tube (17) is a soft tube, the inlet tube (10) and the outlet tube (11) are hard tubes, and the outlet tube (11) has an S-shaped structure.

7. A sampling device for rainwater drainage bodies according to claim 6, characterized in that, One-way valves are provided at the end of the inlet pipe (10) and outlet pipe (11) near the water pump box (4).

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