Sampling device for water quality detection
By designing an automated water quality testing and sampling device, utilizing an airbag and a motor-driven propeller, the problems of inconvenience and risk associated with manual operation in existing technologies have been solved. This enables automated sampling in both wide and deep water areas, improving ease of use and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI CHUJING TESTING TECHNOLOGY CO LTD
- Filing Date
- 2025-05-20
- Publication Date
- 2026-05-05
AI Technical Summary
Existing water quality testing and sampling devices require manual operation when conducting tests in wider and deeper waters, which is inconvenient and risky.
A device comprising a sampling carrier box, an airbag, a counterweight, a motor, and a propeller was designed. The device achieves buoyancy and descent by inflating and deflating the airbag, and the motor drives the propeller for directional control, thereby enabling automated sampling, preventing large pieces of suspended debris from entering and protecting aquatic life.
It enables automated sampling in wide water surfaces and waters of varying depths, improving operational convenience and safety while avoiding the inconvenience and potential risks of manual operation.
Smart Images

Figure CN224202816U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water quality testing technology, specifically to a sampling device for water quality testing. Background Technology
[0002] Water quality monitoring is the process of monitoring and measuring the types of pollutants in water bodies, the concentrations of various pollutants, and their changing trends to evaluate the water quality status. The monitoring scope is very broad, including unpolluted and polluted natural water (rivers, lakes, seas, and groundwater) as well as various types of industrial wastewater.
[0003] A search revealed an existing patent (CN221445494U) that discloses a sampling device for water quality testing, comprising a suction cylinder, a pull rod, and a handle. The pull rod is slidably mounted inside the suction cylinder, and a handle is installed at the upper end of the pull rod. A sampling component is located at the bottom of the suction cylinder, preventing foreign objects from entering during water quality sampling. In a preferred embodiment of this invention, the sampling component includes a first connecting pipe and a second connecting pipe. The first connecting pipe is installed at the lower end of the suction cylinder, and the second connecting pipe is threadedly installed at the lower end of the first connecting pipe. In another preferred embodiment, a suction tube is installed on the side wall of the second connecting pipe, and a plug is inserted into the suction tube. In yet another preferred embodiment, a connecting outer ring is installed at the lower edge of the suction cylinder, and a protective mesh cover is provided below the suction cylinder. In yet another preferred embodiment, a connecting inner ring is provided at the upper end of the protective mesh cover, and the connecting inner ring is threadedly connected to the connecting outer ring. In a preferred embodiment of this utility model, a bottom mesh plate is rotatably mounted on the lower end of the protective mesh cover, and a brush is mounted on the upper surface of the bottom mesh plate. In a preferred embodiment of this utility model, a limiting plate is mounted on the side wall of the suction cylinder, a guide slider is slidably arranged inside the limiting plate, and a scale is provided on the limiting plate. In a preferred embodiment of this utility model, a connecting rod is mounted on the side wall of the pull rod, and the lower end of the connecting rod is connected to the guide slider. Additional aspects and advantages of this utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this utility model. Beneficial effects: By providing a protective mesh cover and a bottom mesh plate on the outside of the connecting pipe two, foreign objects are prevented from entering the protective mesh cover and the suction tube, making it safer and more convenient for the suction tube to draw water samples, preventing the entry of foreign objects and blockage, and making the sampling device for water quality testing smooth and convenient.
[0004] However, the above methods usually require manual deployment, which is inconvenient when conducting tests in wider waters, and poses certain risks when deploying in deeper waters, making them inconvenient to use.
[0005] In view of this, the present invention proposes a sampling device for water quality testing. Summary of the Invention
[0006] This utility model proposes a sampling device for water quality testing, which solves the problems of related technologies where the sampling is usually done manually, which is inconvenient when testing in wide water areas, and poses certain risks when sampling in deep water areas, making it not convenient to use.
[0007] The technical solution of this utility model is as follows: A sampling device for water quality testing includes a sampling carrier box. A fixing ring is fixedly connected to the bottom of the sampling carrier box. A slot is opened inside the fixing ring. A fixing block is fixedly connected to the outside of the fixing ring. An extension plate is fixedly connected to the outside of the fixing block. An airbag is fixedly connected to the bottom of the extension plate. A counterweight is fixedly connected to the other end of the bottom of the extension plate. A fixing block is fixedly connected to one side of the sampling carrier box. A monitoring device is fixedly connected to one side of the fixing block. A positioning mechanism is fixedly connected to the other side of the fixing block. Multiple water inlet pipes are fixedly connected to the bottom of the sampling carrier box. A water inlet is fixedly connected to the bottom of each water inlet pipe. A water pump is fixedly connected inside the water inlet. A motor is fixedly connected to the center of the bottom of the sampling carrier box. A rotor is fixedly connected to the output end of the motor. The rotating rod has a thruster housing fixedly connected to its other end. A spiral thruster is installed inside the thruster housing. A sampling cylinder is fixedly connected to the top of the water inlet pipe. The sampling cylinder is located inside the sampling carrier box. A fixed cylinder is fixedly connected to the center of the sampling carrier box. A motor is fixedly connected inside the fixed cylinder. The sampling carrier box can float when the airbag is inflated and submerge under the gravity of the counterweight when the airbag is deflated. It can extract water samples from waters of different depths. The motor can steer the thruster housing and the spiral thruster inside it. The sampling carrier box can be moved in different directions by starting the spiral thruster, enabling detection in a wider water surface. When it reaches different water areas, the water inlet pump can be started to collect samples from multiple areas.
[0008] Preferably, the number of slots is multiple, and the slots are equally spaced at the bottom of the sampling carrier box. The fixed rings and slots can protect the water inlet at the bottom of the sampling carrier box when it is suspended, preventing large floating debris such as tree branches from entering and affecting its use.
[0009] Preferably, there are three fixing blocks, all of which are fixed to the outside of the fixing ring. The extension plates are fixed radially to the outside of the fixing blocks with the center of the bottom of the sampling carrier box as the center. The multiple extension plates can maintain the stability of the sampling carrier box on the water surface and can stably rise or fall when the airbag is working.
[0010] Preferably, the extension plate is horizontally arranged in a flat shape, and the airbag is fixed at the middle position of the bottom of the extension plate.
[0011] Preferably, the top of the sampling carrier box is provided with a top cover, one side of which is rotatably connected to the sampling carrier box via a hinge. The top cover can seal the inside of the sampling carrier box and facilitate observation of the liquid level inside the sampling carrier box.
[0012] Preferably, the positioning mechanism, monitoring system, motor one, water pump, airbag, and propeller are all electrically connected to motor two.
[0013] Preferably, there are multiple water inlet pipes arranged in a ring at the bottom of the sampling carrier box. The sampling tube is also arranged in a ring inside the sampling carrier box. The fixed tube is away from the sampling tube. The multiple water inlet pipes enable the collection of samples when traveling to different water areas.
[0014] Preferably, both the sampling tube and the fixing tube are sealed structures, and the top cover is a sealing cover.
[0015] Preferably, the monitoring device is fixed to the outside of the sampling container, and the positioning mechanism is fixed to the inside of the sampling container. Both the monitoring device and the positioning mechanism are waterproof structures.
[0016] Preferably, the propeller housing is configured in a mesh frame shape. The propeller housing can protect the propeller and prevent the blades from cutting fish, shrimp and aquatic plants during operation, thus affecting the quality of the extracted water.
[0017] The beneficial effects of this utility model are as follows:
[0018] 1. In this utility model, the sampling carrier box can float when the airbag is inflated and sink under the gravity of the counterweight when the airbag is deflated, by setting an airbag and a counterweight. It can extract water samples from waters of different depths. The motor can turn the propeller shell and the internal spiral propeller, so that the sampling carrier box can be driven in different directions by starting the spiral propeller, so as to carry out detection in a wide water surface. When it travels to different water areas, the water pump can be started to collect samples from multiple areas.
[0019] 2. The fixed ring and groove in this utility model can protect the water inlet at the bottom of the sampling carrier box when it is suspended, so as to prevent large floating debris such as tree branches from entering and affecting its use. The multiple extension plates can maintain the stability of the sampling carrier box on the water surface and can rise or submerge stably when the airbag is working.
[0020] 3. The top cover of this utility model can seal the inside of the sampling container and facilitate the observation of the liquid level inside the sampling container. The multiple water inlet pipes can collect samples when traveling to different water areas. The propeller shell can protect the propeller and prevent the blades from cutting fish, shrimp and aquatic plants during travel, thus affecting the quality of the extracted water. Attached Figure Description
[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0022] Figure 1 This is a three-dimensional structural diagram of the present invention from one side view;
[0023] Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another side view;
[0024] Figure 3 This is a three-dimensional structural diagram of the present invention viewed from below;
[0025] Figure 4 This is a side view of the structure of this utility model;
[0026] Figure 5 This is a top view of the internal structure of this utility model.
[0027] In the diagram: 1. Sampling carrier box; 2. Fixing ring; 3. Groove; 4. Fixing block one; 5. Extension plate; 6. Airbag; 7. Counterweight; 8. Top cover; 9. Water inlet pipe; 10. Water inlet; 11. Water pump; 12. Motor one; 13. Rotating rod; 14. Thruster housing; 15. Fixing cylinder; 16. Motor two; 17. Sampling cylinder; 18. Monitoring; 19. Fixing block two; 20. Positioning mechanism. Detailed Implementation
[0028] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. 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 of ordinary skill in the art without creative effort are within the scope of protection of this utility model.
[0029] Example 1
[0030] A preferred embodiment of the water quality testing sampling device provided by this utility model is, for example... Figures 1 to 5As shown: A sampling device for water quality testing includes a sampling carrier box 1. A fixing ring 2 is fixedly connected to the bottom of the sampling carrier box 1. A slot 3 is opened inside the fixing ring 2. A fixing block 4 is fixedly connected to the outside of the fixing ring 2. An extension plate 5 is fixedly connected to the outside of the fixing block 4. An airbag 6 is fixedly connected to the bottom of the extension plate 5. A counterweight 7 is fixedly connected to the other end of the bottom of the extension plate 5. A fixing block 19 is fixedly connected to one side of the sampling carrier box 1. A monitoring device 18 is fixedly connected to one side of the fixing block 19. A positioning mechanism 20 is fixedly connected to the other side of the fixing block 1. Multiple [unclear - possibly referring to a specific type of device] are fixedly connected to the bottom of the sampling carrier box 1. The water inlet pipe 9 has an inlet 10 fixedly connected to its bottom. An inlet pump 11 is fixedly connected inside the inlet 10. A motor 12 is fixedly connected to the center of the bottom of the sampling carrier box 1. A rotating rod 13 is fixedly connected to the output end of the motor 12. A propeller housing 14 is fixedly connected to the other end of the rotating rod 13. A spiral propeller is installed inside the propeller housing 14. A sampling cylinder 17 is fixedly connected to the top of the water inlet pipe 9. The sampling cylinder 17 is located inside the sampling carrier box 1. A fixed cylinder 15 is fixedly connected to the center of the sampling carrier box 1. A motor 2 16 is fixedly connected inside the fixed cylinder 15.
[0031] It should be noted that the existing testing equipment still has some shortcomings. Its deployment usually requires manual operation, which is inconvenient when conducting tests in wider waters, and poses certain risks when deployed in deeper waters, making it not very convenient to use.
[0032] In this embodiment, the sampling carrier 1 floats up when the airbag 6 is inflated and sinks under the gravity of the counterweight 7 when the airbag 6 is deflated, enabling water sample extraction from waters at different depths. The motor 12 enables the steering of the propeller shell 14 and its internal propeller, allowing the sampling carrier 1 to travel in different directions by starting the propeller, thus enabling detection on a wider water surface. When traveling to different water locations, the water pump 11 can be started to collect samples from multiple areas.
[0033] In a further preferred embodiment of this utility model, the number of slots 3 is provided in multiples, and the slots 3 are equally spaced and opened at the bottom of the sampling carrier box 1.
[0034] In this embodiment, the fixed ring 2 and the slot 3 can protect the water inlet 10 at the bottom of the sampling carrier box 1 when the sampling carrier box 1 is suspended, so as to prevent large floating debris such as tree branches from entering and affecting its use.
[0035] In a further preferred embodiment of this utility model, three fixing blocks 4 are provided, and all three fixing blocks 4 are fixed to the outside of the fixing ring 2. The extension plate 5 is fixed radially to the outside of the fixing blocks 4 with the center position of the bottom of the sampling carrier box 1 as the center.
[0036] In this embodiment, the multiple extension plates 5 can maintain the stability of the sampling carrier box 1 on the water surface, and can stably rise or dive when the airbag 6 is working.
[0037] In a further preferred embodiment of this utility model, the extension plate 5 is arranged horizontally in a flat shape, and the airbag 6 is fixed at the middle position of the bottom of the extension plate 5.
[0038] Example 2
[0039] Based on Example 1, a preferred embodiment of the sampling device for water quality testing provided by this utility model is as follows: Figures 1 to 5 As shown: The top of the sampling carrier box 1 is provided with a top cover 8, and one side of the top cover 8 is rotatably connected to the sampling carrier box 1 by a hinge.
[0040] In this embodiment, the top cover 8 can seal the inside of the sampling carrier box 1, and at the same time, it can be convenient to observe the liquid level inside the sampling carrier box 1.
[0041] In a further preferred embodiment of this utility model, the positioning mechanism 20, the monitoring 18, the first motor 12, the water pump 11, the airbag 6, and the propeller are all electrically connected to the second motor 16.
[0042] In a further preferred embodiment of this utility model, there are multiple water inlet pipes 9, which are arranged in a ring at the bottom of the sampling support box 1. The sampling cylinder 17 is also arranged in a ring inside the sampling support box 1, and the fixed cylinder 15 is away from the sampling cylinder 17.
[0043] In this embodiment, multiple water inlet pipes 9 are provided to collect samples when traveling to different water areas.
[0044] In a further preferred embodiment of this utility model, both the sampling cylinder 17 and the fixing cylinder 15 are sealed structures, and the top cover 8 is a sealing cover.
[0045] In a further preferred embodiment of this utility model, the monitoring 18 is fixed to the outside of the sampling carrier box 1, and the positioning mechanism 20 is fixed to the inside of the sampling carrier box 1. Both the monitoring 18 and the positioning mechanism 20 are waterproof structures.
[0046] In a further preferred embodiment of this utility model, the propeller housing 14 is generally arranged in a mesh frame shape.
[0047] In this embodiment, the propeller housing 14 can protect the propeller, thereby preventing the blades from cutting fish, shrimp and aquatic plants during operation and affecting the quality of the extracted water.
[0048] The working principle of this utility model is as follows: The starting motor 12 steers the propeller housing 14 and its internal spiral propeller. When the spiral propeller is activated, the sampling carrier 1 travels in different directions, enabling detection over a wider water surface. When traveling to different water areas, the water inlet pump 11 can be activated to collect samples from multiple areas. The sampling carrier 1 floats when the airbag 6 is inflated and when the airbag 6 is deflated, the sampling carrier 1 submerges under the gravity of the counterweight 7. Multiple extension plates 5 maintain the stability of the sampling carrier 1 on the water surface. When the airbag 6 is working, it can rise or submerge stably, enabling water sample extraction from waters of different depths. The slot 3 protects the water inlet 10 at the bottom of the sampling carrier 1 when it is suspended, preventing large floating debris such as branches from entering and affecting its use. The monitoring 18 and positioning mechanism 20 observe the water surface status and position the equipment.
[0049] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A sampling device for water quality testing, characterized in that, The sampling carrier box (1) includes a fixed ring (2) fixedly connected to the bottom of the sampling carrier box (1), a slot (3) is opened inside the fixed ring (2), a fixed block (4) is fixedly connected to the outside of the fixed ring (2), an extension plate (5) is fixedly connected to the outside of the fixed block (4), an airbag (6) is fixedly connected to the bottom of the extension plate (5), a counterweight (7) is fixedly connected to the other end of the bottom of the extension plate (5), a fixed block (19) is fixedly connected to one side of the sampling carrier box (1), a monitoring device (18) is fixedly connected to one side of the fixed block (19), a positioning mechanism (20) is fixedly connected to the other side of the fixed block (19), and multiple water inlet pipes (9) are fixedly connected to the bottom of the sampling carrier box (1). The bottom of the water inlet pipe (9) is fixedly connected to a water inlet (10), and the inside of the water inlet (10) is fixedly connected to a water pump (11). The center of the bottom of the sampling carrier box (1) is fixedly connected to a motor (12), the output end of the motor (12) is fixedly connected to a rotating rod (13), the other end of the rotating rod (13) is fixedly connected to a propeller housing (14), the inside of the propeller housing (14) is provided with a spiral propeller, the top of the water inlet pipe (9) is fixedly connected to a sampling cylinder (17), the sampling cylinder (17) is located inside the sampling carrier box (1), the center of the inside of the sampling carrier box (1) is fixedly connected to a fixed cylinder (15), and the inside of the fixed cylinder (15) is fixedly connected to a motor (16).
2. The sampling device for water quality testing according to claim 1, characterized in that, The number of slots (3) is set to multiple, and the slots (3) are equally spaced and located at the bottom of the sampling carrier box (1).
3. A sampling device for water quality testing according to claim 2, characterized in that, The number of fixed blocks (4) is set to three, and all three fixed blocks (4) are fixed to the outside of the fixed ring (2). The extension plate (5) is fixed to the outside of the fixed blocks (4) in a radial pattern with the center position of the bottom of the sampling carrier box (1) as the center.
4. A sampling device for water quality testing according to claim 3, characterized in that, The extension plate (5) is horizontally arranged in a flat shape, and the airbag (6) is fixed at the middle position of the bottom of the extension plate (5).
5. A sampling device for water quality testing according to claim 1, characterized in that, The top of the sampling carrier box (1) is provided with a top cover (8), and one side of the top cover (8) is rotatably connected to the sampling carrier box (1) by a hinge.
6. A sampling device for water quality testing according to claim 1, characterized in that, The positioning mechanism (20), monitoring (18), motor one (12), water pump (11), airbag (6) and propeller are all electrically connected to motor two (16).
7. A sampling device for water quality testing according to claim 1, characterized in that, The number of water inlet pipes (9) is set to multiple, and the multiple water inlet pipes (9) are arranged in a ring at the bottom of the sampling carrier box (1). The sampling tube (17) is also arranged in a ring inside the sampling carrier box (1). The fixed tube (15) is away from the sampling tube (17).
8. A sampling device for water quality testing according to claim 5, characterized in that, Both the sampling tube (17) and the fixing tube (15) are sealed structures, and the top cover (8) is a sealing cover.
9. A sampling device for water quality testing according to claim 1, characterized in that, The monitoring (18) is fixed to the outside of the sampling carrier box (1), and the positioning mechanism (20) is fixed to the inside of the sampling carrier box (1). Both the monitoring (18) and the positioning mechanism (20) are waterproof structures.
10. A sampling device for water quality testing according to claim 1, characterized in that, The propeller housing (14) is generally arranged in a mesh frame shape.
Citation Information
Patent Citations
Sampling device for water quality detection
CN221445494U