A wastewater sampling device

Abstract

The application discloses a wastewater sampling device and relates to the technical field of wastewater sampling.The device comprises a cart, an automatic rotating assembly, a sampling unit, a flow monitoring piece and a control box, and the sampling unit is installed on the cart.The discharging device can stably immerse in a water body through the circular shell of the sampling unit, and water samples can be extracted through a soft tube by a micro water pump in the internal, the flow monitoring piece on the soft tube can monitor the sampling flow in real time and feed back to the control box, so that the precise control of the sampling process is realized;the driving mechanism can drive the rotating disc to rotate accurately, a plurality of placing grooves on the rotating disc can respectively place sample cylinders, after a group of sample cylinders complete sampling, the rotating disc is driven to rotate, so that the next sample cylinder is automatically switched to below the outlet end of the soft tube, and the continuous sampling and switching of multiple parallel samples can be completed without manual intervention, the sampling efficiency is greatly improved, the sampling requirements of different time periods and different point sequences of samples are met, and the short board of the prior art is effectively made up.

Description

Technical Field

[0001] This invention relates to the field of wastewater sampling technology, and in particular to a wastewater sampling device. Background Technology

[0002] The effective implementation of water environment monitoring, wastewater treatment process optimization, and pollution source tracing all rely on the accurate collection of wastewater samples. Due to the differences in the physicochemical properties of various pollutants in wastewater, they often exhibit obvious stratification in static or slow-flowing water bodies. For example, denser heavy metal ions tend to deposit at the bottom, while oily pollutants tend to accumulate on the surface, and the concentration of dissolved organic matter may also vary with depth. Therefore, the ability to reliably and conveniently sample at specific water depths is a crucial prerequisite for obtaining representative data and conducting in-depth analysis of water pollution status and migration patterns.

[0003] While existing wastewater sampling devices can achieve a certain degree of depth sampling, such as the oily wastewater sampling device disclosed in announcement number CN220019043U, which uses a counterweight and hoisting mechanism to lower the sampling head to a specified depth, there is still room for improvement in functionality, automation, and sample fidelity. On the one hand, common devices often lack efficient and automated capabilities for continuous collection and switching of multiple parallel samples, making them unsuitable for applications requiring the acquisition of samples from different time periods or locations, thus limiting sampling efficiency. On the other hand, during device movement or operation, collected samples are easily spilled or mixed due to vibration, affecting sample representativeness and testing accuracy. Furthermore, filter components in the sampling system are prone to clogging after prolonged use, and existing designs often involve cumbersome disassembly and cleaning, impacting maintenance efficiency and the reliability of continuous operation. Therefore, there is an urgent need for an integrated wastewater sampling device that can achieve adjustable depth, automated continuous sampling, good vibration damping, and easy maintenance to meet the increasingly sophisticated needs of environmental monitoring and process control. Summary of the Invention

[0004] This invention provides a wastewater sampling device that can solve the problems of existing technologies, such as the lack of efficient and automated continuous collection and switching capabilities for multiple parallel samples, difficulty in adapting to application scenarios that require obtaining sequential samples from different time periods or locations, and limited sampling efficiency.

[0005] A wastewater sampling device includes a trolley, an automatic rotating assembly, a sampling unit, a flow monitoring device, and a control box. The sampling unit is mounted on the trolley and includes a circular shell for immersion in water and a miniature water pump disposed within the circular shell. The outlet of the miniature water pump is connected via a flexible hose. The automatic rotating assembly is mounted on the trolley and includes a connecting platform, a rotating disk rotatably mounted on the connecting platform, and a drive mechanism for rotating the rotating disk. The rotating disk has multiple placement slots, each containing a sample tube. The opening of each sample tube serves as the liquid receiving end of the sampling unit, and the outlet end of the flexible hose is located above the sample tube. The flow monitoring device is mounted on the flexible hose. The control box is connected to the automatic rotating assembly, the sampling unit, and the flow monitoring device.

[0006] The wastewater sampling device provided by this invention has, but is not limited to, the following beneficial effects compared to the prior art: This wastewater sampling device allows for stable immersion in water through the circular shell of the sampling unit. An internal micro-pump extracts water samples via a flexible hose. A flow monitoring device on the hose monitors the sampling flow rate in real time and sends feedback to the control box, enabling precise control of the sampling process. The connecting platform of the automatic rotating assembly provides stable support for the rotating disk, and the drive mechanism allows for precise rotation of the disk. Multiple slots on the rotating disk can hold sample tubes. The control box can control the automatic rotating assembly and the sampling unit in tandem. After one set of sample tubes is collected, the rotating disk rotates, automatically switching the next sample tube to the area below the hose outlet. This allows for continuous collection and switching of multiple parallel samples without manual intervention, significantly improving sampling efficiency and adapting to the collection needs of samples from different time periods and locations, effectively overcoming the shortcomings of existing technologies.

[0007] Furthermore, a filter assembly is provided inside the circular shell. The filter assembly includes a filter cartridge detachably connected to the liquid inlet end of the circular shell. The filter cartridge has a slot on its side. A corresponding elastically retractable insert is provided on the circular shell. The insert can be inserted into or released from the slot under the action of a spring force to realize the locking and unlocking of the filter cartridge.

[0008] Furthermore, the filter cartridge is provided with a guide block on its outer side, and the inner side of the circular shell is provided with a guide groove that cooperates with the guide block. The insert block is connected to the push plate through a push rod, and the push plate is connected to the circular shell through a fixing block. A first spring is sleeved on the push rod, and one end of the push rod is connected to the handle.

[0009] Furthermore, the bottom of the automatic rotation assembly is provided with a protective shock absorption assembly, which includes a base, a slide rod, a second spring sleeved on the slide rod, a slider slidably mounted on the slide rod, and a support rod connecting the slider and the connecting platform. The support rod is rotatably connected to the slider through a first rotating shaft and rotatably connected to the connecting platform through a second rotating shaft. Multiple dampers are connected between the base and the automatic rotation assembly, and the base has grooves adapted to the dampers.

[0010] Furthermore, the trolley is equipped with a telescopic detection component, which includes a support frame fixed to the trolley, a telescopic frame connected to the support frame, and a first drive unit for driving the telescopic frame to extend and retract. The sampling unit is located at the end of the telescopic frame.

[0011] Furthermore, the first drive unit includes a first motor, the drive end of the first motor is connected to a first gear, the first gear meshes with a second gear, the second gear is connected to a threaded rod through a bearing sleeve, the telescopic frame is provided with a threaded hole that mates with the threaded rod, and the telescopic frame is provided with a rotating frame.

[0012] Furthermore, the telescopic detection assembly also includes a winding motor, a winding frame driven by the winding motor, and a cable wound on the winding frame. The lower end of the cable is connected to a circular shell, and a counterweight is provided on the circular shell. The winding motor is communicatively connected to the control box.

[0013] Furthermore, the hose is equipped with a flow sensor and a solenoid valve, both of which are communicatively connected to the control box.

[0014] Furthermore, the driving mechanism includes a rotary motor, the driving end of which is connected to a worm gear, the worm gear meshing with a worm wheel, the worm wheel being connected to the bottom of a rotating disk via a driving rod, and multiple rollers being arranged circumferentially on the bottom of the rotating disk, and the rotary motor being connected to a connecting platform.

[0015] Furthermore, multiple placement slots are arranged at equal intervals along the circumference on the rotating disk. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a wastewater sampling device according to an embodiment of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of a wastewater sampling device according to an embodiment of the present invention. Figure 1 ; Figure 3 for Figure 1 Exploded view of the telescopic detection component; Figure 4 for Figure 1Schematic diagram of the structure of the telescopic detection component; Figure 5 for Figure 1 A schematic diagram of the structure of the sampling unit; Figure 6 for Figure 1 A schematic diagram of the structure of the filter assembly; Figure 7 for Figure 6 A magnified view of a section at point A in the middle; Figure 8 for Figure 1 Exploded view of the automatic rotating component; Figure 9 for Figure 1 An explosion diagram of the central protective shock absorption component; Figure 10 for Figure 1 Schematic diagram of the structure of the middle protective shock absorption component; Figure 11 for Figure 6 A schematic diagram of the interior of the filter cartridge.

[0017] Explanation of reference numerals in the attached figures: 1. Trolley; 2. Telescopic detection assembly; 3. Filter assembly; 4. Automatic rotation assembly; 5. Protective shock absorption assembly; 6. Sampling unit; 7. Flow monitoring component; 8. Control box; 201. Support frame; 202. First motor; 203. First gear; 204. Second gear; 205. Threaded rod; 206. Bearing sleeve; 207. Telescopic frame; 208. Threaded hole; 209. Rotating frame; 210. Rewinding motor; 212. Support frame; 301. Filter cartridge; 302. Guide block; 303. Slot; 304. Fixing block; 305. First spring; 306. Push rod; 307. Handle; 308. Push plate; 309. Insert block 310. Bearing seat; 311. Rotating shaft; 312. Connecting inclined plate; 313. Brush plate; 401. Connecting platform; 402. Rotating groove; 403. Rotating motor; 404. Worm gear; 405. Worm wheel; 406. Rotating disk; 407. Roller; 408. Placement groove; 409. Sample cylinder; 501. Base; 502. Groove; 503. Damper; 504. Slide rod; 505. Second spring; 506. Slider; 507. First rotating shaft; 508. Support rod; 509. Second rotating shaft; 61. Round shell; 62. Miniature water pump; 63. Hose; 64. Flow sensor; 65. Solenoid valve; 66. Counterweight. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings showing multiple embodiments according to this application. It should be understood that the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments described in this application without creative effort will fall within the scope of protection of this application.

[0019] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing specific embodiments only and is not intended to limit this application; the terms "comprising," "including," "having," "containing," etc., in the description, claims, and accompanying drawings of this application are open-ended terms. Therefore, "comprising," "including," or "having" refers to, for example, a method or apparatus having one or more steps or elements, but is not limited to having only these one or more elements. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0021] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0022] It should be emphasized that when the term "comprising / including" is used in this specification, it is used to explicitly indicate the presence of the stated feature, integer, step, or component, but does not exclude the presence or addition of one or more other features, integers, steps, components, or groups of features, integers, steps, or components.

[0023] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0024] like Figure 1-8 As shown, an embodiment of the present invention provides a wastewater sampling device, including a trolley 1, an automatic rotating assembly 4, a sampling unit 6, a flow monitoring device 7, and a control box 8. The sampling unit 6 is mounted on the trolley 1 and includes a circular shell 61 for immersion in water and a miniature water pump 62 disposed within the circular shell 61. The outlet of the miniature water pump 62 is connected via a flexible hose 63. The automatic rotating assembly 4 is mounted on the trolley 1 and includes a connecting platform 401, a rotating disk 406 rotatably mounted on the connecting platform 401, and a driving mechanism for rotating the rotating disk 406. The rotating disk 406 is provided with multiple placement slots 408, and each placement slot 408 is provided with a sample tube 409. The opening of each sample tube 409 serves as the liquid receiving end of the sampling unit 6, and the outlet end of the flexible hose 63 is located above the sample tube 409. The flow monitoring device 7 is disposed on the flexible hose 63. The control box 8 is connected to the automatic rotating assembly 4, the sampling unit 6, and the flow monitoring device 7.

[0025] In this embodiment, the circular shell 61 of the sampling unit 6 can be stably immersed in water. With the help of the internal micro water pump 62, water samples are extracted through the hose 63. The flow monitoring device 7 on the hose 63 can monitor the sampling flow in real time and feed it back to the control box 8, so as to achieve precise control of the sampling process. The connecting platform 401 of the automatic rotating component 4 provides stable support for the rotating disk 406. The driving mechanism can drive the rotating disk 406 to rotate precisely. The multiple placement slots 408 on the rotating disk 406 can respectively place sample tubes 409. The control box 8 can control the automatic rotating component 4 and the sampling unit 6 in a linkage. After a set of sample tubes 409 are collected, the rotating disk 406 is driven to rotate, so that the next sample tube 409 is automatically switched to the outlet end of the hose 63. The continuous collection and switching of multiple parallel samples can be completed without manual intervention, which greatly improves the sampling efficiency, adapts to the collection needs of different time periods and different point sequence samples, and effectively makes up for the shortcomings of the existing technology. By integrating the automatic rotating component 4, sampling unit 6, flow monitoring component 7 and control box 8 into the overall structural design of the trolley 1, the problem of lack of efficient and automated multi-parallel sample continuous acquisition and switching capability in the existing technology can be effectively solved, making it difficult to adapt to application scenarios that require the acquisition of sample sequences from different time periods or different locations, and limiting sampling efficiency.

[0026] Specifically, the flow monitoring component 7 employs a miniature turbine flow sensor or an electromagnetic flow sensor (typical models include the MIK-LWGY liquid turbine sensor and the Rosemount 8750W electromagnetic flow meter). It collects the instantaneous and cumulative flow signals of the water sample within the hose 63 in real time through turbine rotation sensing or Faraday electromagnetic induction principles. The internal sensing unit converts the water flow signal into a standard electrical signal, which is then transmitted to the control box 8 via RS485 communication or a 4-20mA analog signal. This forms a closed-loop electrical linkage with the miniature water pump 62 of the sampling unit 6 and the solenoid valve 65 on the hose 63. The sampler 8 performs calculations and judgments based on the real-time flow data fed back by the flow monitoring device 7. When the sampled amount reaches the preset value, it immediately outputs an electrical signal to control the micro water pump 62 to stop and the solenoid valve 65 to close. At the same time, it drives the rotating motor 403 of the automatic rotating component 4 to rotate the rotating disk 406 to switch the next sample cylinder 409 to the liquid receiving position. The entire process can achieve integrated coordinated control of quantitative sampling, automatic pump stop and automatic cylinder switching without manual intervention. This ensures that the sampling amount of each sample cylinder 409 is accurate and consistent, and avoids problems such as water sample leakage and pump idling. It significantly improves sampling accuracy, automation level and equipment operation safety.

[0027] Specifically, multiple placement slots 408 are evenly spaced circumferentially on the rotating disk 406. This arrangement of slots 408 precisely matches the rotation of the disk, significantly improving the accuracy of sample tube 409 switching and the orderliness of multi-batch sampling. It also optimizes the space utilization and force uniformity of the rotating disk 406. The evenly spaced placement slots 408 ensure that each sample tube 409 within the slot can precisely and equidistantly switch to the preset sample receiving position at the outlet of the flexible tube 63 as the rotating disk 406 rotates. Combined with the precise transmission of the worm gear, this ensures that the sample tube 409 is precisely aligned with the liquid receiving end after each switching, preventing water spillage due to uneven spacing and guaranteeing the accuracy of continuous collection of multiple parallel samples.

[0028] like Figure 5 and Figure 6 As shown, a filter assembly 3 is provided inside the circular shell 61. The filter assembly 3 includes a filter cartridge 301 that is detachably connected to the liquid inlet end of the circular shell 61. A slot 303 is provided on the side of the filter cartridge 301. A retractable insert 309 is provided on the circular shell 61. The insert 309 can be inserted into or detached from the slot 303 under the action of spring force, so as to realize the snap-fit ​​fixing and unlocking disassembly of the filter cartridge 301.

[0029] In this embodiment, the filter cartridge 301 of the filter assembly 3 is detachably connected to the liquid inlet end of the circular shell 61, which can specifically filter impurities in the wastewater, preventing impurities from entering the interior of the circular shell 61 and clogging the micro water pump 62 or contaminating the hose 63, thus ensuring the stable operation of the sampling unit. The slot 303 on the side of the filter cartridge 301 and the elastically retractable insert 309 on the circular shell 61 form a precise fit. The insert 309 can be quickly inserted into the slot 303 with the help of spring force to lock and fix the filter cartridge 301, ensuring that the filter cartridge 301 fits tightly against the circular shell 61 during water flow impact and equipment movement, without leakage or displacement, thus ensuring stable filtration effect. When it is necessary to clean or replace the filter cartridge 301, only external force is needed to drive the insert 309 out of the slot 303 to complete the unlocking and disassembly, without the need for additional tools. The operation is simple and efficient, greatly shortening the maintenance time, adapting to long-term, high-frequency wastewater sampling scenarios, and reducing maintenance costs.

[0030] like Figure 6 and Figure 7 As shown, a guide block 302 is provided on the outer side of the filter cartridge 301, and a guide groove that cooperates with the guide block 302 is provided on the inner side of the circular shell 61. The insert block 309 is connected to the push plate 308 through the push rod 306. The push plate 308 is connected to the circular shell 61 through the fixing block 304. A first spring 305 is sleeved on the push rod 306, and one end of the push rod 306 is connected to the handle 307.

[0031] In this embodiment, the guide block 302 on the outer side of the filter cartridge 301 precisely engages with the guide groove on the inner side of the circular shell 61. This provides precise positioning guidance during filter cartridge 301 installation, preventing misalignment of the slot 303 and the insert block 309 due to filter cartridge 301 installation misalignment. This significantly improves installation efficiency and assembly accuracy, while also preventing the filter cartridge 301 from rotating circumferentially due to water flow impact during operation, ensuring filtration stability. The insert block 309 is connected to the push plate 308 via the push rod 306. The push plate 308 is securely mounted on the circular shell 61 via the fixing block 304, providing stable support for the push rod 306 and the insert block 309, preventing deformation and displacement of the elastic telescopic structure. The first spring 305 sleeved on the push rod 306 provides a stable elastic driving force, ensuring that the insert block 309 always has reliable clamping force, tightly engaging in the slot 303, and ensuring that the filter cartridge 301 is firmly fixed. The handle 307 connected to one end of the push rod 306 provides a convenient point of force for the operator. Simply pull the handle 307 to drive the push rod 306 to drive the insert block 309 to compress the first spring 305 and disengage it from the slot 303, thereby quickly unlocking the filter cartridge 301. The entire disassembly and assembly process requires no tools, making the operation labor-saving, precise, and efficient. At the same time, the coordinated operation of each structure improves the overall structural strength and service life of the filter assembly.

[0032] like Figure 5 and Figure 11 As shown, the filter cartridge 301 has a rotating shaft 311 connected to it via a bearing seat 310. Multiple connecting inclined plates 312 are connected to the rotating shaft 311. The ends of the connecting inclined plates 312 are connected to a brush plate 313, and the ends of the brush plate 313 contact the inner wall of the filter cartridge 301. The connecting inclined plates 312 can drive the brush plate 313 to rotate automatically under the impact of water flow.

[0033] In this embodiment, the rotating shaft 311 is securely mounted inside the filter cartridge 301 via a bearing seat 310. The bearing seat 310 reduces the frictional resistance of the rotating shaft 311 during rotation, ensuring smooth rotation and preventing jamming that could affect the cleaning effect. Multiple connecting inclined plates 312 connected to the rotating shaft 311 are driven to rotate by the impact force of the water flow when wastewater enters the filter cartridge 301, eliminating the need for additional motors or other power components, simplifying the structure while reducing energy consumption and the risk of failure. Brush plates 313 connected to the ends of the connecting inclined plates 312 are in close contact with the inner wall of the filter cartridge 301. When the connecting inclined plates 312 drive the rotating shaft 311 to rotate, the brush plates 313 can simultaneously rotate along the inner wall of the filter cartridge 301, brushing away attached impurities in real time, effectively preventing filter screen clogging, and ensuring smooth liquid flow and stable filtration efficiency in the filter cartridge 301. All components work together to achieve the self-cleaning function of filter cartridge 301 without increasing operation and maintenance costs or structural complexity, thereby extending the cleaning cycle and service life of filter cartridge 301 and making it suitable for complex wastewater sampling scenarios with high impurity content.

[0034] like Figure 9 and Figure 10 As shown, the bottom of the automatic rotation component 4 is provided with a protective shock absorption component 5. The protective shock absorption component 5 includes a base 501, a slide rod 504, a second spring 505 sleeved on the slide rod 504, a slider 506 slidably mounted on the slide rod 504, and a support rod 508 connecting the slider 506 and the connecting platform 401. The support rod 508 is rotatably connected to the slider 506 through a first rotating shaft 507 and rotatably connected to the connecting platform 401 through a second rotating shaft 509. A plurality of dampers 503 are connected between the base 501 and the automatic rotation component 4. The base 501 has a groove 502 adapted to the damper 503.

[0035] In this embodiment, the base 501 of the protective shock-absorbing component 5 provides stable support for the overall shock-absorbing structure. The groove 502 on the base can accurately position and limit the damper 503. The multiple dampers 503 connected between the base 501 and the automatic rotating component 4 can quickly absorb vibration energy and achieve the first layer of shock absorption and buffering. The second spring 505 sleeved on the slide rod 504 cooperates with the sliding slider 506, and cooperates with the support rod 508 rotatably connected to the slider 506 and the connecting platform 401 through the first rotating shaft 507 and the second rotating shaft 509, respectively, to form The elastic support linkage structure allows the support rod 508 to drive the slider 506 to slide along the slide rod 504 and compress the second spring 505 when the connecting platform 401 is displaced by vibration. The elastic deformation of the second spring 505 achieves a second layer of elastic damping, decomposing and buffering the vibration impact force in multiple directions. The synergistic cooperation between the damper 503 and the spring elastic support structure achieves a dual damping effect that combines rigidity and flexibility, effectively suppressing vibration rebound and ensuring that the connecting platform 401 and the rotating disk 406 of the automatic rotating component 4 are always in a stable state, making it suitable for complex scenarios of mobile sampling on bumpy outdoor roads.

[0036] like Figure 2 and Figure 3 As shown, the trolley 1 is equipped with a telescopic detection component 2. The telescopic detection component 2 includes a support frame 201 fixed on the trolley 1, a telescopic frame 207 connected to the support frame 201, and a first drive unit for driving the telescopic frame 207 to extend and retract. The sampling unit 6 is located at the end of the telescopic frame 207.

[0037] In this embodiment, the telescopic frame 207 connected to the support frame 201 can be horizontally telescopically adjusted under the drive of the first drive unit. The sampling unit 6 is directly set at the end of the telescopic frame 207, and its horizontal position is adjusted synchronously with the telescopic frame 207. This allows the sampling unit 6 to be flexibly pushed to water areas away from the cart 1, adapting to sampling needs at different horizontal distances such as sewage outlets and the edge of wastewater pools. This breaks through the limitation of traditional sampling, which can only collect samples around the cart. The overall telescopic structure is integrated with the cart 1, making adjustment and operation convenient. No additional sampling support is required. With the power drive of the first drive unit, the horizontal position of the sampling unit 6 can be automatically and accurately adjusted, improving the efficiency and convenience of water sample collection at different locations and allowing the device to adapt to more diverse wastewater sampling site conditions.

[0038] like Figure 3 and Figure 4 As shown, the first drive unit includes a first motor 202, the drive end of the first motor 202 is connected to a first gear 203, the first gear 203 meshes with a second gear 204, the second gear 204 is connected to a threaded rod 205 through a bearing sleeve 206, the telescopic frame 207 is provided with a threaded hole 208 that mates with the threaded rod 205, and the telescopic frame 207 is provided with a rotating frame 209.

[0039] In this embodiment, the first motor 202 of the first drive unit provides a stable power source for the telescopic adjustment. The first gear 203 connected to its drive end meshes with the second gear 204 to achieve smooth power transmission and speed regulation, ensuring that the telescopic frame 207 has a uniform and controllable telescopic speed. The second gear 204 is connected to the threaded rod 205 through the bearing sleeve 206. The bearing sleeve 206 can reduce the friction loss when the threaded rod 205 rotates, ensuring the smoothness and durability of the transmission structure. The threaded rod 205 and the threaded hole 208 on the telescopic frame 207 are precisely matched, converting the rotational motion of the gear transmission into the linear telescopic motion of the telescopic frame 207, realizing the precise quantitative adjustment of the horizontal position of the sampling unit 6, and effectively improving the accuracy of positioning different sampling points. The rotating frame 209 set on the telescopic frame 207 can provide auxiliary support and limit the structure during the telescopic adjustment process, further preventing the telescopic frame 207 from tilting or shaking during movement, ensuring the accuracy of water sample collection. At the same time, the various transmission components work together, resulting in high structural transmission efficiency, low failure rate, and extended service life of the telescopic detection component 2.

[0040] like Figure 3 and Figure 4 As shown, the telescopic detection assembly 2 also includes a winding motor 210, a winding frame 211 driven by the winding motor 210, and a cable wound on the winding frame 211. The lower end of the cable is connected to the circular shell 61, and a counterweight 66 is provided on the circular shell 61. The winding motor 210 is communicatively connected to the control box 8.

[0041] In this embodiment, the winding motor 210 provides stable power for depth adjustment. The winding frame 211 driven by the motor can accurately wind and unwind the cable. The winding motor 210 is communicatively connected to the control box 8, which can precisely control the length of the cable winding and unwinding. This allows for quantitative adjustment of the underwater immersion depth of the circular shell 61, enabling flexible collection of water samples from different depths, such as the surface, middle, and bottom layers, enriching the sampling dimensions and adapting to the needs of multi-depth water quality monitoring. The lower end of the cable is directly connected to the circular shell 61, and the winding action can synchronously drive the circular shell 61 to rise and fall. The adjustment process is smooth and responsive. The counterweight 66 set on the circular shell 61 provides stable downward pressure for the sampling unit 6, ensuring that the circular shell 61 can sink into the water quickly and smoothly. At the same time, it effectively resists the impact of water flow and prevents the circular shell 61 from floating or shifting in the water, ensuring that the sampling unit 6 is always at the preset sampling depth and guaranteeing the accuracy and authenticity of water sample collection at different depths. The overall structure is integrated with the telescopic detection component 2 and coordinated with the control box 8 to achieve dual automatic adjustment of the horizontal position and underwater depth of the sampling unit 6. This allows the device to meet the diverse sampling needs of different horizontal points and different water depths, further improving the device's scene adaptability and sampling efficiency.

[0042] like Figure 1 As shown, a flow sensor 64 and a solenoid valve 65 are installed on the hose 63, and both the flow sensor 64 and the solenoid valve 65 are communicatively connected to the control box 8.

[0043] In this embodiment, the flow rate and cumulative liquid volume of the water sample in the tube can be detected in real time by the flow sensor 64 on the hose 63, and the data is synchronously fed back to the control box 8, realizing the visual monitoring and data recording of the sampling flow rate, and providing accurate numerical basis for quantitative sampling. The solenoid valve 65, which works in conjunction with the flow sensor 64, can receive the command from the control box 8 to realize the rapid opening and closing of the hose 63. When the control box 8 detects that the liquid volume fed back by the flow sensor 64 has reached the preset value, it can automatically trigger the solenoid valve 65 to close, accurately terminating the water sample collection, ensuring that the liquid volume collected in each sample tube 409 is consistent, and effectively avoiding the situation where the water sample in the sample tube 409 overflows due to excessive liquid collection, or insufficient liquid collection affects subsequent detection.

[0044] like Figure 1 and Figure 8 As shown, the drive mechanism includes a rotary motor 403, a worm gear 404 connected to the drive end of the rotary motor 403, the worm gear 404 meshing with a worm wheel 405, the worm wheel 405 being connected to the bottom of the rotating disk 406 via a drive rod, a plurality of rollers 407 being arranged circumferentially on the bottom of the rotating disk 406, a rotating groove 402 adapted to the rollers 407 being opened on the connecting platform 401, and the rotary motor 403 being connected to the connecting platform 401.

[0045] In this embodiment, a rotating motor 403, fixed to the connecting platform 401, provides stable power for rotation. The worm gear 404 and worm wheel 405 connected to its drive end mesh with each other, achieving not only smooth power transmission and speed reduction adjustment, but also allowing the rotating disk 406 to rotate slowly and evenly, ensuring the sample tube 409 is accurately switched to the outlet end of the hose 63. Simultaneously, the meshing structure of the worm gear and worm wheel has a self-locking characteristic, effectively preventing the rotating disk 406 from rotating autonomously due to external forces or equipment vibration, ensuring the sample tube 409 is firmly positioned without deviation during sample reception. The worm wheel 405 drives the rotating disk 406 to rotate via a drive rod. Multiple rollers 407 arranged circumferentially at the bottom of the rotating disk 406 precisely cooperate with the rotating groove 402 on the connecting platform 401, providing uniform circumferential auxiliary support for the rotating disk 406. This effectively disperses the load-bearing pressure of the rotating disk 406, reduces frictional resistance during rotation, and prevents problems such as sinking or jamming of the rotating disk 406, ensuring smooth and unobstructed rotation.

[0046] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A wastewater sampling device, characterized in that, include: trolley (1); The sampling unit (6) is mounted on the cart (1) and includes a circular shell (61) for immersion in water and a miniature water pump (62) disposed inside the circular shell (61). The outlet of the miniature water pump (62) is connected by a hose (63). An automatic rotating assembly (4) is mounted on a trolley (1) and includes a connecting platform (401), a rotating disk (406) rotatably mounted on the connecting platform (401), and a driving mechanism for rotating the rotating disk (406). The rotating disk (406) is provided with a plurality of placement slots (408), and each placement slot (408) is provided with a sample tube (409). The opening of each sample tube (409) serves as the liquid receiving end of the sampling unit (6), and the outlet end of the flexible tube (63) is located above the sample tube (409). A flow monitoring device (7) is mounted on a hose (63); The control box (8) is connected to the automatic rotation assembly (4), the sampling unit (6) and the flow monitoring device (7).

2. The wastewater sampling device as described in claim 1, characterized in that, The circular shell (61) is provided with a filter assembly (3). The filter assembly (3) includes a filter cartridge (301) detachably connected to the liquid inlet end of the circular shell (61). The filter cartridge (301) has a slot (303) on its side. The circular shell (61) is provided with a corresponding elastically retractable insert (309). The insert (309) can be inserted into or disengaged from the slot (303) under the action of spring force, so as to realize the snap-fit ​​fixing and unlocking disassembly of the filter cartridge (301).

3. The wastewater sampling device as described in claim 2, characterized in that, The filter cartridge (301) is provided with a guide block (302) on the outside, and the inner side of the round shell (61) is provided with a guide groove that cooperates with the guide block (302). The insert block (309) is connected to the push plate (308) through the push rod (306). The push plate (308) is connected to the round shell (61) through the fixing block (304). A first spring (305) is sleeved on the push rod (306). One end of the push rod (306) is connected to the handle (307).

4. The wastewater sampling device as described in claim 1, characterized in that, The bottom of the automatic rotation component (4) is provided with a protective shock absorption component (5). The protective shock absorption component (5) includes a base (501), a slide rod (504), a second spring (505) sleeved on the slide rod (504), a slider (506) slidably set on the slide rod (504), and a support rod (508) connecting the slider (506) and the connecting platform (401). The support rod (508) is rotatably connected to the slider (506) through a first rotating shaft (507) and rotatably connected to the connecting platform (401) through a second rotating shaft (509). A plurality of dampers (503) are connected between the base (501) and the automatic rotation component (4). The base (501) is provided with a groove (502) adapted to the damper (503).

5. The wastewater sampling device as described in claim 1, characterized in that, The trolley (1) is provided with a telescopic detection component (2). The telescopic detection component (2) includes a support frame (201) fixed on the trolley (1), a telescopic frame (207) connected to the support frame (201), and a first drive unit for driving the telescopic frame (207) to extend and retract. The sampling unit (6) is located at the end of the telescopic frame (207).

6. The wastewater sampling device as described in claim 5, characterized in that, The first drive unit includes a first motor (202), the drive end of the first motor (202) is connected to a first gear (203), the first gear (203) meshes with a second gear (204), the second gear (204) is connected to a threaded rod (205) through a bearing sleeve (206), the telescopic frame (207) is provided with a threaded hole (208) that mates with the threaded rod (205), and the telescopic frame (207) is provided with a rotating frame (209).

7. The wastewater sampling device as described in claim 5, characterized in that, The telescopic detection assembly (2) also includes a winding motor (210), a winding frame (211) driven by the winding motor (210), and a cable wound on the winding frame (211). The lower end of the cable is connected to a circular shell (61), and a counterweight (66) is provided on the circular shell (61). The winding motor (210) is communicatively connected to the control box (8).

8. The wastewater sampling device as described in claim 1, characterized in that, A flow sensor (64) and a solenoid valve (65) are installed on the hose (63), and both the flow sensor (64) and the solenoid valve (65) are communicatively connected to the control box (8).

9. The wastewater sampling device as described in claim 1, characterized in that, The driving mechanism includes a rotary motor (403), the driving end of which is connected to a worm (404), the worm (404) meshing with a worm wheel (405), the worm wheel (405) being connected to the bottom of a rotating disk (406) via a driving rod, and a plurality of rollers (407) being arranged circumferentially on the bottom of the rotating disk (406), and the rotary motor (403) being connected to a connecting platform (401).

10. The wastewater sampling device as described in claim 1, characterized in that, Multiple placement slots (408) are arranged at equal intervals along the circumference on the rotating disk (406).

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