A water body pollutant detection device

Abstract

The utility model discloses a water body pollutant detection device, including water body detector, water body detector is provided with water body sampling mechanism, and water body sampling mechanism is used for drawing aquaculture pond different depth water body sample, through water pump collocation sampling pipe, bellows and electric telescopic cylinder etc. Component, can accurate adjustment draw water pipe's length of lowering, can draw aquaculture pond different depth water body sample, can fully grasp the pollution situation of different water layer, avoid the result deviation caused only to detect surface water body. The lower end of electric telescopic cylinder is installed water body detection sensor, can immediately carry out water body pollutant detection after adjusting to target depth, need not additional separate operation detection step, improve overall detection efficiency. Waterproof motor drives impeller rotation, can provide power for the device, make it freely move on the surface of water body, can realize the water body detection of different areas of aquaculture pond, avoid the detection range limitation, improve the comprehensiveness of detection.

Description

Technical Field

[0001] This utility model relates to the technical field of water body detection devices, specifically a water pollutant detection device. Background Technology

[0002] In aquaculture, pollutants such as ammonia nitrogen, nitrite, suspended solids, and dissolved oxygen in the water directly affect the survival rate of farmed organisms such as fish, shrimp, and crabs, and it is necessary to regularly take water samples to test the water quality.

[0003] Existing detection devices cannot precisely adjust the length of the pumping pipe, making it difficult to collect water samples from different depths in aquaculture ponds. They often only test the surface water. Since pollutant distribution is uneven across different water layers, surface water test results alone cannot provide a comprehensive understanding of the pollution situation, leading to biased and unrepresentative results. Furthermore, the lack of a waterproof motor and impeller for mobility restricts the device to specific locations, limiting testing to areas within the pond. This limited range means the data obtained cannot reflect the true water quality of the entire pond, reducing the comprehensiveness of the detection. Therefore, improvements to the existing technology are necessary. Utility Model Content

[0004] The purpose of this invention is to provide a water pollutant detection device to solve the problems existing in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a water pollutant detection device, comprising a water detector, wherein the water detector is equipped with a water sampling mechanism, the water sampling mechanism being used to extract water samples from different depths in aquaculture ponds, the water sampling mechanism comprising a water pump installed inside the water detector, a sampling tube connected to the upper end of the water pump, a corrugated pipe connected to the upper end of the sampling tube, a dust cover sleeved on the lower outer side of the corrugated pipe, a sampling cup sleeved inside the water detector, a disk attached to the lower end of the sampling cup, a magnetic sheet adsorbed on the lower end surface of the disk, a water pump connected to a water suction pipe, a threaded sleeve threadedly connected to the lower outer side of the water suction pipe, a filter sleeve connected to the lower end of the threaded sleeve, a tension spring connected to the lower end surface of the water detector, and an airbag provided on the outer side of the water detector;

[0006] The water body detector is equipped with a depth adjustment mechanism, which is used to adjust the sampling depth to adapt to different water depths in aquaculture. The depth adjustment mechanism includes an electric telescopic cylinder installed inside the water body detector. The lower end of the electric telescopic cylinder is connected to a connecting rod. One end of the connecting rod is connected to a limit sleeve. The internal thread of the limit sleeve is connected to a screw. A water level sensor and a water body detection sensor are installed at the lower end of the electric telescopic cylinder.

[0007] The water body detector is equipped with a moving mechanism for adjusting its position. The moving mechanism includes a rotating rod sleeved inside the water body detector, a sealed bearing sleeved on the outer side of the rotating rod, a driver installed inside the water body detector, a support sleeve connected to the lower end of the rotating rod, a waterproof motor installed inside the support sleeve, an impeller connected to the shaft of the waterproof motor, and filter screens connected to both sides of the support sleeve.

[0008] Preferably, the water body detector has an internally fitted sampling tube and an internally bonded magnetic sheet.

[0009] Preferably, the lower end of the tension spring is connected to a water pumping pipe, the water pumping pipe is sleeved inside the water detector, and a filter sleeve is sleeved at the lower end of the water pumping pipe.

[0010] Preferably, one end of the screw presses against the water pipe, the inside of the limiting sleeve is fitted with the water pipe, and the lower end of the limiting sleeve is tightly attached to the threaded sleeve.

[0011] Preferably, a sealed bearing is installed inside the water detector, and an impeller is fitted inside the support sleeve.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This water pollutant detection device, through a combination of a water pump, sampling tube, corrugated pipe, and electric telescopic cylinder, can extract water samples from different depths in aquaculture ponds, providing a comprehensive understanding of the pollution status of different water layers and avoiding the bias caused by only detecting the surface water.

[0014] The sampling cup is fixed by the adsorption structure of the disk and magnetic sheet, which makes it easy to quickly remove and replace, and facilitates subsequent testing and transfer of the sample;

[0015] The electric telescopic cylinder can extend and retract components such as the connecting rod and limit sleeve. Combined with the screws securing the water pipe, it allows for precise adjustment of the lowering length of the water pipe, adapting to the testing needs of aquaculture ponds with varying depths, thus broadening its applicability. The equipped water level sensor monitors the current sampling depth in real time, ensuring that testing personnel accurately grasp the water depth information at the sampling location, providing precise depth references for the testing data. A water body detection sensor is installed at the lower end of the electric telescopic cylinder, allowing for immediate detection of water pollutants after adjusting to the target depth, eliminating the need for additional separate testing steps and improving overall testing efficiency.

[0016] A waterproof motor drives the impeller, providing power to the device and allowing it to move freely across the water surface. This enables water quality monitoring in different areas of the aquaculture pond, avoiding limitations in the detection range and improving the comprehensiveness of the detection. The rotating rod, combined with a sealed bearing, ensures both the flexibility of rotation and the overall sealing of the device, preventing water from seeping into the interior and affecting the operation of electronic components, thus ensuring stable operation of the device in aquatic environments. Attached Figure Description

[0017] Figure 1 This is a perspective view of the overall structure of this utility model;

[0018] Figure 2 This is a three-dimensional sectional view of the water body detector of this utility model;

[0019] Figure 3 This is an enlarged perspective view of the filter sleeve of this utility model;

[0020] Figure 4 This is an enlarged three-dimensional sectional view of the support sleeve of this utility model.

[0021] In the diagram: 1 Water detector, 11 Water pump, 12 Sampling tube, 13 Corrugated pipe, 14 Dust cover, 15 Sampling cup, 16 Disk, 17 Magnetic sheet, 18 Pumping pipe, 19 Threaded sleeve, 110 Filter sleeve, 111 Tension spring, 112 Airbag, 2 Electric telescopic cylinder, 21 Connecting rod, 22 Limit sleeve, 23 Screw, 24 Water level sensor, 25 Water detection sensor, 3 Rotating rod, 31 Sealed bearing, 32 Driver, 33 Support sleeve, 34 Waterproof motor, 35 Impeller, 36 Filter screen. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 The diagram shows a water pollutant detection device, including a water detector 1. The water detector 1 is equipped with a water sampling mechanism for extracting water samples from different depths in aquaculture ponds. The water sampling mechanism includes a water pump 11 installed inside the water detector 1, a sampling tube 12 connected to the upper end of the water pump 11, a corrugated pipe 13 connected to the upper end of the sampling tube 12, a dust cover 14 sleeved on the lower outer side of the corrugated pipe 13, a sampling cup 15 sleeved inside the water detector 1, a disk 16 attached to the lower end of the sampling cup 15, a magnetic sheet 17 adsorbed on the lower end surface of the disk 16, a water pump 18 connected to the lower end of the water pump 11, a threaded sleeve 19 threadedly connected to the lower outer side of the water pump 18, a filter sleeve 110 connected to the lower end of the threaded sleeve 19, a tension spring 111 connected to the lower end surface of the water detector 1, and an airbag 112 installed on the outer side of the water detector 1.

[0024] The water body detector 1 is equipped with a depth adjustment mechanism. The depth adjustment mechanism is used to adjust the sampling depth to adapt to different water depths in aquaculture. The depth adjustment mechanism includes an electric telescopic cylinder 2 installed inside the water body detector 1. The lower end of the electric telescopic cylinder 2 is connected to a connecting rod 21. One end of the connecting rod 21 is connected to a limit sleeve 22. The limit sleeve 22 is internally threaded with a screw 23. A water level sensor 24 and a water body detection sensor 25 are installed at the lower end of the electric telescopic cylinder 2.

[0025] The water body detector 1 is equipped with a moving mechanism for adjusting the position of the water body detector 1. The moving mechanism includes a rotating rod 3 sleeved inside the water body detector 1, a sealed bearing 31 sleeved on the outside of the rotating rod 3, a driver 32 installed inside the water body detector 1, a support sleeve 33 connected to the lower end of the rotating rod 3, a waterproof motor 34 installed inside the support sleeve 33, an impeller 35 connected to the shaft of the waterproof motor 34, and filter screens 36 connected to both sides of the support sleeve 33.

[0026] Please see Figure 1 and Figure 2 The water body detector 1 has a sampling tube 12 inside and a magnetic sheet 17 attached inside. With this setup, the water pump 11, along with the sampling tube 12, corrugated pipe 13, and electric telescopic cylinder 2, can extract water samples from different depths of aquaculture ponds. This allows for a comprehensive understanding of the pollution status of different water layers and avoids the result deviation caused by only detecting the surface water.

[0027] Please see Figure 1 and Figure 2The lower end of the tension spring 111 is connected to the water pumping pipe 18, the water detector 1 is internally connected to the water pumping pipe 18, and the lower end of the water pumping pipe 18 is connected to the filter sleeve 110. Under this configuration, the sampling cup 15 is fixed by the adsorption structure of the disk 16 and the magnetic sheet 17, which facilitates quick removal and replacement, and makes it convenient for subsequent testing and transfer of the sample.

[0028] Please see Figure 1 , Figure 2 and Figure 3 One end of the screw 23 presses against the water suction pipe 18, and the inside of the limiting sleeve 22 is fitted with the water suction pipe 18. The lower end of the limiting sleeve 22 is tightly attached to the threaded sleeve 19. With this configuration, the electric telescopic cylinder 2 can drive the connecting rod 21, the limiting sleeve 22, and other components to extend and retract. Combined with the fixing effect of the screw 23 on the water suction pipe 18, the lowering length of the water suction pipe 18 can be precisely adjusted to meet the testing needs of aquaculture ponds with different water depths, thus broadening its applicability. The equipped water level sensor 24 can monitor the current sampling depth in real time, ensuring that the testing personnel accurately grasp the water depth information at the sampling location and provide accurate depth dimension reference for the testing data. A water body detection sensor 25 is installed at the lower end of the electric telescopic cylinder 2, which can immediately detect water pollutants after adjusting to the target depth without the need for additional separate testing steps, improving the overall testing efficiency.

[0029] Please see Figure 1 and Figure 4 The water detector 1 has a sealed bearing 31 installed inside, and an impeller 35 is fitted inside the support sleeve 33. With this configuration, the waterproof motor 34 drives the impeller 35 to rotate, providing power to the device and allowing it to move freely on the water surface. This enables water detection in different areas of the aquaculture pond, avoiding limitations in the detection range and improving the comprehensiveness of the detection. The structure of the rotating rod 3 with the sealed bearing 31 ensures both the flexibility of rotation and improves the overall sealing of the device, preventing water from seeping into the interior and affecting the operation of electronic components, thus ensuring stable operation of the device in the aquatic environment.

[0030] Working principles of various electrical devices: I. Water body detector 1:

[0031] 1. Hardware wiring structure:

[0032] Power supply link: The positive and negative terminals of the built-in sealed battery are connected to the power management module of the circuit board through the power cord. The circuit board integrates voltage regulation, overcurrent protection, and charging interface. The battery provides unified power supply for all electrical components of the whole machine, and the whole machine adopts DC12V power supply.

[0033] Signal wiring links: The circuit board has multiple sets of waterproof signal terminals, which are led out through waterproof shielded signal cables;

[0034] Analog signal line: Connect to water level sensor 24 and water body detection sensor 25 to collect analog voltage and current signals;

[0035] Digital control signal lines: connect to water pump 11 relay module, electric telescopic cylinder 2 drive module, and driver 32;

[0036] Feedback signal line: Each actuator has its own status feedback line to transmit data back to the circuit board and report the operating status in real time.

[0037] Mechanical wiring sealing: The signal line is waterproofed where it passes through the housing of the water detector 1. The wiring channels of the water pipe 18 and the connecting rod 21 have built-in rubber waterproof rings to prevent pool water from seeping into the internal circuit board.

[0038] 2. Overall Working Principle: Water Detector 1 is the control center of the entire equipment. The MCU circuit board stores the control program and completes three layers of logic:

[0039] Signal acquisition: Continuously read the water quality and depth electrical signals transmitted back by the water level sensor 24 and the water body detection sensor 25;

[0040] Command output: Send start and stop signals according to the set parameters to control water pump 11 to pump water, electric telescopic cylinder 2 to lift and lower, and waterproof motor 34 to drive impeller 35 to move;

[0041] Working closed loop: The sensor collects water signals → the signal line is transmitted to the circuit board MCU for parsing and calculation → the MCU outputs control signals to drive the actions of each actuator → the actuator operation feedback status signal is returned to the circuit board, forming an automatic detection closed loop.

[0042] II. Water Pump 11:

[0043] 1. Electrical wiring:

[0044] Power supply: The power output wire of the circuit board relay is directly connected to the DC motor of water pump 11;

[0045] Control signal lines: The GPIO digital control line of the circuit board is connected to the relay coil. The high and low levels of the MCU control the relay to open and close, thereby realizing the start and stop of water pump 11.

[0046] Feedback line: The water pump 11 has a built-in current detection line that transmits the signal back to the circuit board to determine whether there is an idling or blockage fault.

[0047] 2. Working principle: After the circuit board receives the "sampling" command, the signal line outputs a high level, the relay is turned on, and the battery powers the water pump 11 to run.

[0048] The water pump 11 generates negative pressure and draws water at different depths through the water pipe 18 and the filter sleeve 110. The water flows into the internal sampling cup 15 through the corrugated pipe 13 to complete the sample storage. The upper end of the corrugated pipe 13 is equipped with a dust cover 14 to isolate dust when not in use.

[0049] The lower end of the pumping pipe 18 is connected to the filter sleeve 110 via the threaded sleeve 19, which intercepts fish and shrimp feces and mud, preventing impurities from entering the water pump 11 and causing blockage. After sampling is completed, the MCU cuts off the signal line level, the relay disconnects, and the water pump 11 stops.

[0050] III. Electric telescopic cylinder 2:

[0051] 1. Electrical wiring:

[0052] Power line: The circuit board's dedicated drive module outputs a forward and reverse power line to connect to the built-in DC motor of the electric telescopic cylinder 2;

[0053] Control signal lines: Two digital signal lines connect to the circuit board to control the extension and lowering, and the retraction and lifting, respectively;

[0054] Integrated sensors share a signal line: The water level sensor 24 and the water body detection sensor 25 at the lower end of the electric telescopic cylinder 2 share a set of shielded signal lines, which are connected in parallel to the analog acquisition port of the circuit board.

[0055] 2. Working Principle: The operator sets the target water depth, and the circuit board sends an extension command via a signal line. The motor of the electric telescopic cylinder 2 rotates in the forward direction, and the connecting rod 21 and the limit sleeve 22 simultaneously lower the water pipe 18. The screw 23 inside the limit sleeve 22 is tightened, which simultaneously drives the water pipe 18 to sink. The lower end of the limit sleeve 22 is tightly attached to the threaded sleeve 19, limiting the lowering limit. During the lowering process, the water level sensor 24 transmits a depth electrical signal to the circuit board in real time via a signal line, and the MCU compares the signal with the set water depth in real time. After reaching the target depth, the circuit board cuts off the extension signal, and the electric telescopic cylinder 2 stops. Simultaneously, the water body detection sensor 25 is triggered to immediately collect water quality data.

[0056] After the test is completed, the signal line sends a retraction command, the motor reverses, and the electric telescopic cylinder 2 lifts the water pipe 18, water level sensor 24, and water body detection sensor 25 to float and reset, avoiding long-term immersion and scaling.

[0057] IV. Water level sensor 24:

[0058] 1. Electrical wiring: A two-core shielded analog signal cable is used, with one end connected to the water level sensor 24 probe and the other end connected to the ADC analog acquisition pin of the circuit board; the signal cable extends and retracts synchronously with the electric telescopic cylinder 2, the cable has a reserved redundant length, and the outer corrugated pipe 13 is waterproof and wear-resistant.

[0059] 2. Working principle: Based on the principle of hydrostatic sounding, the probe generates a weak voltage analog signal that is proportional to the water depth when it contacts the water body. The signal line is continuously transmitted to the circuit board. The MCU has a built-in calibration program that converts the voltage value into the actual water depth value and simultaneously binds the pollutant detection data collected by the water body detection sensor 25 at that depth, thus solving the defect of no depth labeling for data of different water layers.

[0060] V. Water Body Detection Sensor 25:

[0061] 1. Electrical wiring: Multi-parameter electrochemical sensor, one set of 4-core shielded signal cables: 2 analog signal output cables and 2 power supply cables; the signal cables run along the outer wall of the electric telescopic cylinder 2, with waterproof connectors sealing the cable outlets, and are directly connected to the circuit board signal conditioning module.

[0062] 2. Working principle: The probe has built-in electrodes for ammonia nitrogen, nitrite, dissolved oxygen, and turbidity. These electrodes react electrochemically with the water to generate weak current and voltage signals corresponding to the pollutant concentrations. The signal line transmits the original analog signal to the circuit board, where the onboard amplifier circuit reduces noise and amplifies the signal. The MCU then converts the signal into a visually intuitive water quality value based on the calibration curve.

[0063] The water body detection sensor 25 can detect water without the need for water pump 11 to take samples. Once the depth is reached, the water body detection sensor 25 outputs data synchronously, which greatly shortens the detection process. At the same time, it can be cross-validated with the detection results of water samples drawn by water pump 11 to sampling cup 15, which improves the accuracy of the data.

[0064] VI. Driver 32:

[0065] 1. Electrical wiring:

[0066] Power supply: Connect the high-power output power line of the circuit board to the power input terminal of driver 32;

[0067] Control signal lines: 3 digital signal lines connect to the circuit board to control forward, turn, and stop respectively;

[0068] Output control line: The driver 32 output line connects to the waterproof motor 34 below, and passes through the sealed bearing 31 and the hollow wiring channel inside the rotating rod 3, completely isolated from water.

[0069] 2. Working principle: The driver 32 is the power transfer controller of the waterproof motor 34. The circuit board sends movement and direction commands through the signal line. The driver 32 amplifies the current and adjusts the output voltage to match the load of the waterproof motor 34. At the same time, it collects the motor current and speed feedback signals in real time and transmits them back to the circuit board through the signal line. If the impeller 35 is entangled with aquatic plants or the load is too large, the MCU will automatically stop to protect the entire moving mechanism.

[0070] VII. Waterproof motor 34:

[0071] 1. Electrical wiring: The power cord and speed feedback signal line of the waterproof motor 34 are housed in the hollow cavity of the rotating rod 3 and connected to the upper driver 32 through the waterproof wiring inside the sealed bearing 31; the filter screens 36 on both sides of the support sleeve 33 isolate debris and protect the outlet connector of the waterproof motor 34 from being tangled and damaged.

[0072] 2. Working Principle: After receiving the signal line command from the circuit board, the driver 32 outputs a drive current. The shaft of the waterproof motor 34 drives the impeller 35 to rotate, relying on the reaction force of the water to propel the entire water detector 1 to move freely on the surface of the aquaculture pond. The rotating rod 3, in conjunction with the sealed bearing 31, can rotate 360°. The signal line rotates synchronously with the hollow rotating rod 3, preventing cable twisting and pulling. The support sleeve 33 encloses the waterproof motor 34, and the filter screens 36 on both sides prevent aquatic plants and fish and shrimp debris from getting tangled in the impeller 35. The waterproof motor 34 has a fully sealed waterproof casing, and the signal line connector is sealed with glue to prevent pond water from seeping in and causing a short circuit. After moving to the target detection point, the circuit board sends a stop signal, the waterproof motor 34 is powered off, and the water detector 1 performs stratified water sampling and in-situ detection by the water detection sensor 25.

[0073] Complete electrical signal flow of the whole machine: Battery power supply → Circuit board main control power-on;

[0074] Depth adjustment: Circuit board signal line → Electric telescopic cylinder 2 lowers → Water level sensor 24 signal line transmits depth data back → Stops when set water depth is reached;

[0075] Water body detection sensor 25: The signal line of water body detection sensor 25 transmits water quality analog signals to the circuit board to complete real-time pollutant detection;

[0076] Water sample collection: The circuit board signal line triggers the relay to turn on → the water pump 11 starts, and the water flows into the sampling cup 15 for storage through the pumping pipe 18, threaded sleeve 19, filter sleeve 110, sampling pipe 12, and corrugated pipe 13; the dust cover 14 protects the opening of the corrugated pipe 13, and the tension spring 111 stabilizes the pumping pipe 18.

[0077] Area movement: The circuit board signal line sends a movement command to the driver 32 → the driver 32 outputs current to drive the waterproof motor 34 and impeller 35 to rotate, the rotating rod 3 and the sealed bearing 31 cooperate to rotate the direction and switch the detection point of the aquaculture pond; the filter screen 36 protects the impeller 35;

[0078] Full-process feedback: The status feedback signal lines of water pump 11, electric telescopic cylinder 2, and waterproof motor 34 continuously transmit operating parameters, the circuit board monitors the faults of the whole machine in real time, and the floating is maintained by airbag 112, realizing fully automatic stratification and full-area water pollutant detection.

[0079] The working principle of this embodiment is as follows: This water pollutant detection device, through the combination of a water pump 11, sampling tube 12, corrugated pipe 13, and other components, can extract water samples from different depths in aquaculture ponds, comprehensively understanding the pollution status of different water layers and avoiding the result deviation caused by only detecting the surface water. The filter sleeve 110 at the lower end of the pumping pipe 18 can filter large particulate impurities in the water, preventing impurities from entering the detection system and affecting the detection accuracy; at the same time, the dust cover 14 can prevent dust and other pollutants from entering the sampling pipeline when the device is not in use, ensuring the cleanliness of the sampling pipeline. The sampling cup 15 is fixed by the adsorption structure of the disk 16 and the magnetic sheet 17, which facilitates quick removal and replacement, and facilitates subsequent detection and transfer of samples; the corrugated pipe 13 has a telescopic characteristic, which can adapt to the sampling needs of different depths and improve operational flexibility. The tension spring 111 connects the water detector 1 and the pumping pipe 18, which can pull and fix the pumping pipe 18, preventing the pumping pipe 18 from shaking in the water and affecting the sampling stability, and at the same time buffering the impact of water flow on the pipeline.

[0080] The electric telescopic cylinder 2 can extend and retract components such as the connecting rod 21 and the limiting sleeve 22. Combined with the fixing effect of the screw 23 on the water suction pipe 18, it can precisely adjust the lowering length of the water suction pipe 18, adapting to the testing needs of aquaculture ponds with different water depths, thus broadening its applicability. The equipped water level sensor 24 can monitor the current sampling depth in real time, ensuring that testing personnel accurately grasp the water depth information at the sampling location, providing accurate depth dimension reference for the testing data. A water body detection sensor 25 is installed at the lower end of the electric telescopic cylinder 2, allowing for immediate detection of water pollutants after adjusting to the target depth, eliminating the need for additional separate testing steps and improving overall testing efficiency.

[0081] A waterproof motor 34 drives the impeller 35 to rotate, providing power to the device and allowing it to move freely on the water surface. This enables water quality detection in different areas of the aquaculture pond, avoiding limitations in the detection range and improving the comprehensiveness of the detection. The filter screens 36 on both sides of the support sleeve 33 prevent debris in the water from entering the impeller 35 area, preventing the impeller 35 from becoming entangled or damaged, ensuring stable operation of the moving mechanism, and extending the device's service life. The sealed bearing 31 prevents water from entering the connection between the rotating rod 3 and the detector, preventing internal components from being damaged by moisture. The structure of the rotating rod 3 combined with the sealed bearing 31 ensures both the flexibility of rotation and improves the overall sealing of the device, preventing water from seeping into the interior and affecting the operation of electronic components, thus ensuring stable operation of the device in aquatic environments.

[0082] The airbag 112 on the outside of the device provides buoyancy, enabling the device to float stably on the water surface and preventing it from sinking. It also facilitates observation and operation by testing personnel. The components are connected by various secure methods such as threaded sleeve 19, threaded connection, and adhesive, which not only ensures the stability of the structure but also facilitates disassembly, maintenance and component replacement in the future.

[0083] It is worth noting that the dual-mode design of water body detection sensor 25 and water pump 11 combined with water pipe 18 for sampling and detection perfectly solves the limitations of a single detection method: the water body detection sensor 25 mounted on the lower end of electric telescopic cylinder 2 can accurately reach the target detection depth after following electric telescopic cylinder 2 and directly carry out pollutant detection work without additional sample transfer, equipment debugging and other operations, which greatly reduces the time spent in the detection process. It is especially suitable for rapid initial screening scenarios in large-area, multi-point aquaculture ponds, and can complete the basic pollutant index screening of different water layers in the whole pond in a short time, significantly improving the overall detection efficiency.

[0084] The sampling system, consisting of pump 11, pumping pipe 18, and corrugated pipe 13, can flexibly extract water samples from different depths in aquaculture ponds, completely avoiding data bias caused by only testing the water. On the one hand, it can cross-validate the data detected by water detection sensor 25, improving the reliability of the detection results; on the other hand, the retained water samples can be used for subsequent in-depth laboratory analysis, meeting the needs of detecting complex pollutant indicators, and achieving a comprehensive and in-depth understanding of the pollution status of aquaculture pond water.

[0085] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water pollutant detection device, characterized in that: The system includes a water body detector (1), which is equipped with a water sampling mechanism for extracting water samples from different depths in aquaculture ponds. The water sampling mechanism includes a water pump (11) installed inside the water body detector (1). A sampling tube (12) is connected to the upper end of the water pump (11), and a corrugated pipe (13) is connected to the upper end of the sampling tube (12). A dust cover (14) is fitted onto the outer side of the lower end of the corrugated pipe (13). The water body detector (1) is internally fitted with… A sampling cup (15) is attached to a disk (16) at its lower end. A magnetic sheet (17) is adsorbed on the lower end surface of the disk (16). A water pump (11) is connected to a water pump pipe (18) at its lower end. A threaded sleeve (19) is threaded to the outer side of the lower end of the water pump pipe (18). A filter sleeve (110) is connected to the lower end of the threaded sleeve (19). A tension spring (111) is connected to the lower end surface of the water detector (1). An airbag (112) is provided on the outer side of the water detector (1). The water body detector (1) is equipped with a depth adjustment mechanism. The depth adjustment mechanism is used to adjust the sampling depth to adapt to different water depths in aquaculture. The depth adjustment mechanism includes an electric telescopic cylinder (2) installed inside the water body detector (1). The lower end of the electric telescopic cylinder (2) is connected to a connecting rod (21). One end of the connecting rod (21) is connected to a limit sleeve (22). The internal thread of the limit sleeve (22) is connected to a screw (23). The lower end of the electric telescopic cylinder (2) is equipped with a water level sensor (24) and a water body detection sensor (25). The water detector (1) is provided with a moving mechanism for adjusting the position of the water detector (1). The moving mechanism includes a rotating rod (3) sleeved inside the water detector (1), a sealed bearing (31) sleeved on the outside of the rotating rod (3), a driver (32) installed inside the water detector (1), a support sleeve (33) connected to the lower end of the rotating rod (3), a waterproof motor (34) installed inside the support sleeve (33), an impeller (35) connected to the shaft of the waterproof motor (34), and filter screens (36) connected to both sides of the support sleeve (33).

2. The water pollutant detection device according to claim 1, characterized in that: The water body detector (1) has an internally fitted sampling tube (12) and an internally attached magnetic sheet (17).

3. The water pollutant detection device according to claim 1, characterized in that: The lower end of the tension spring (111) is connected to the water pumping pipe (18), the water detector (1) is internally fitted with the water pumping pipe (18), and the lower end of the water pumping pipe (18) is fitted with the filter sleeve (110).

4. The water pollutant detection device according to claim 1, characterized in that: One end of the screw (23) presses against the water pipe (18), the inside of the limiting sleeve (22) is fitted with the water pipe (18), and the lower end of the limiting sleeve (22) is tightly attached to the threaded sleeve (19).

5. The water pollutant detection device according to claim 1, characterized in that: The water detector (1) has a sealed bearing (31) installed inside, and the support sleeve (33) has an impeller (35) sleeved inside.

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