Continuous sampling device for livestock and poultry breeding sewage

Abstract

The invention relates to the technical field of sewage treatment, and provides a livestock and poultry breeding sewage continuous sampling device which comprises a sampling frame, the sampling frame is provided with a sampling cavity, the sampling frame is used for being fixed in a sewage pool in the direction perpendicular to the ground, sampling holes are formed in the cavity wall of the sampling cavity, and a lifting part is arranged in the sampling cavity in a lifting mode. The baffle is arranged on the outer side of the pipe wall of the sampling frame in a lifting mode and used for blocking or canceling blocking of the sampling hole after sliding, the sampling frame is horizontally arranged on the lifting piece in a sliding mode, the sampling bag is obliquely arranged on the sampling piece and provided with a bag opening, and the bag opening is driven to be communicated with the sampling hole in the sliding process of the sampling piece. The sampling hole is opened, and sampling is completed. The technical problem that in the prior art, livestock farm sewage is not easy to continuously sample is solved.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and more specifically, to a continuous sampling device for livestock and poultry breeding wastewater. Background Technology

[0002] In the livestock and poultry farming industry, wastewater has a complex composition (containing high concentrations of organic matter, nitrogen and phosphorus, pathogens, and drug residues). Water quality monitoring and treatment effectiveness assessment before discharge rely on continuous and accurate sampling data. Traditional livestock and poultry farm wastewater sampling devices suffer from fixed sampling depths, susceptibility to contamination, and low automation, making it difficult to meet the continuous monitoring requirements of "multi-time periods, multiple depths, and no cross-contamination." This has become a key bottleneck restricting wastewater treatment and compliant discharge.

[0003] Early wastewater sampling primarily employed a "handheld sampler + fixed-point sampling" method, which had significant limitations. Manual sampling required operators to frequently enter the vicinity of wastewater ponds in aquaculture areas, which was not only labor-intensive but also posed safety risks due to toxic gases such as hydrogen sulfide. Furthermore, manual sampling struggled to achieve continuous sampling at fixed depths (e.g., collecting wastewater at fixed times each day at depths of 0.5m, 1m, and 2m), and was prone to human error (such as tilting the sampling bucket or misjudging depth), leading to insufficient sample representativeness. Data shows that the depth error of traditional manual sampling can reach ±20cm. When evaluating the effectiveness of stratified wastewater treatment, this error directly leads to misjudgments of treatment results, affecting subsequent adjustments to treatment processes.

[0004] Traditional mechanical sampling devices are mostly structured with a "fixed depth + single sample" approach, which cannot adapt to the stratified characteristics of livestock and poultry wastewater. Some devices can only collect surface wastewater, while pollutants such as fecal particles and high-concentration ammonia nitrogen in deeper wastewater differ significantly from surface water quality, making single-depth sampling unable to reflect the overall condition of the wastewater. Other devices, while supporting multi-depth sampling, require manual replacement of the sample container. During replacement, external impurities can easily enter due to the container being open, or cross-contamination can occur due to residues from previous samples (e.g., high-concentration COD sample residues can cause low-concentration sample test values ​​to be more than 30% higher). In addition, traditional devices lack effective anti-clogging designs; hair, feed residues, and other debris in livestock and poultry wastewater can easily clog the sampling port, requiring frequent shutdowns for cleaning and preventing continuous sampling. Summary of the Invention

[0005] To overcome the above-mentioned defects, embodiments of the present invention provide a continuous sampling device for livestock and poultry breeding wastewater, which solves the technical problem that it is not easy to continuously sample wastewater from farms in the prior art.

[0006] According to one aspect, at least one embodiment of the present invention provides a continuous sampling device for livestock and poultry breeding wastewater, comprising: A sampling frame for installation in a sewage tank, the sampling frame having a sampling cavity, the sampling frame being perpendicular to the ground, and the cavity wall having sampling holes; A lifting component, which is vertically and vertically disposed within the sampling chamber; A baffle is provided, which is raised and lowered on the outside of the sampling frame. When the baffle is slid, it is used to block the sampling hole. The sampling component, wherein the sampling frame is horizontally slidably mounted on the lifting component; A sampling bag is disposed on the sampling component. The sampling component can move up and down with the lifting component and slide horizontally relative to the lifting component to move the opening of the sampling bag to communicate with the sampling hole. The baffle can open the sampling hole to complete the sampling.

[0007] As a further technical solution, both the sampling cavity and the lifting member have polygonal horizontal projections. The sliding member and the sampling cavity are used to restrict the circumferential rotation of the sliding member. The continuous sampling device for livestock and poultry breeding wastewater also includes: A lead screw, which passes through the lifting component and is threadedly engaged with the lifting component, and is used to drive the lifting component to move up and down; A rotating component is rotatably disposed within the sampling chamber and located on the side of the lead screw away from the sampling hole. A cam is provided on the output end of the rotating component. After the rotating component rotates, the cam can rotate circumferentially to push the sampling component to slide towards the side closer to the sampling hole, so as to move the bag opening to communicate with the sampling hole by means of the sampling component.

[0008] As a further technical solution, the sampling bag has a storage section that is interconnected with the storage section and a tubular extension connected above and communicating with the storage section. The storage section has clamping portions on both its upper and lower sides. The sampling element includes: A tray, which is slidably mounted on the lifting component; A clamp support is horizontally slidably disposed on the tray. The clamp support has an upper support portion and a lower support portion on the side near the sampling hole. The cam is used to push the clamp support to slide relative to the tray. The clamps, at least two in number, are respectively connected and disposed on the upper support and the lower support via a first elastic member. The first elastic member is used to provide the clamps with a force to flatten the sampling bag, and the clamps are used to clamp the clamped part so that the bag opening is tilted upward. The clamp is connected to the upper support via a first elastic element, and the first elastic element is used to provide the clamp with a force to flatten the sampling member.

[0009] As a further technical solution, the clamp support also has a first fixing tube, the tray has a second fixing tube, the second fixing tube can be inserted into the sampling hole under the sliding action of the tray, and the tubular extension is arranged to pass through the first fixing tube and the second fixing tube in sequence.

[0010] As a further technical solution, the top of the lifting component has a first hook and a support, the support being positioned towards the sampling hole and located on the side of the first hook away from the sampling hole. The continuous sampling device for livestock and poultry wastewater further includes: A second elastic element is disposed on the support portion and connected to the tray. The second elastic element is used to provide a force that moves the tray away from the sampling hole. A swing locking member is swingably mounted on the clamp support member. The swing locking member has a second hook portion. The first hook portion can hook with the second hook portion to lock the position of the sampling member relative to the lifting member. The hook is released when the cam pushes the tray close to 101. A sealing rope, which is an elastic rope, is attached to the outer periphery of the first fixing tube and is located near the second fixing part. When the rotating member rotates, the clamp support slides under the action of the second elastic member, and the first fixing tube and the second fixing tube no longer abut against each other. The sealing rope is used to lock the middle part of the tubular extension to prevent the sampling bag from leaking samples.

[0011] As a further technical solution, it also includes: An elastic lifting member is disposed on the lifting member and located on one side of the first hook. The top of the elastic lifting member has an anti-hooking surface. When the first hook and the second hook are hooked, the elastic lifting member is pressed by the second hook. After the first hook and the second hook are unhooked, the elastic lifting member swings the swing locking member upward to prevent the second hook from hooking with the first hook again.

[0012] As a further technical solution, the outer periphery of the first fixing tube has an annular inclined groove for accommodating the sealing rope. The first fixing tube is inclined upward towards the side closer to the sampling chamber. The second fixing tube has an inclined section and a horizontal section. The inclined section is used to connect with the first fixing tube, and the horizontal section is used to insert into the sampling hole.

[0013] As a further technical solution, the outer wall of the horizontal section has an annular fixing groove, and a flexible sealing ring is provided in the annular fixing groove. The outer diameter of the flexible sealing ring is larger than the outer wall diameter of the horizontal section, and the horizontal section is inserted into the sampling hole.

[0014] As a further technical solution, the lead screw passes through the clamp support, the bottom of the cam has an arc-shaped protrusion, and the inner wall of the sampling chamber also has a clearance groove. The clearance groove includes a first sliding groove and a second sliding groove that are perpendicular to each other. The baffle is slidably disposed in the second sliding groove. The support plate also has a through groove for communicating with the clearance groove. A slider is slidably disposed in the clearance groove. The slider has a first guide surface that is inclined outward and upward. The baffle has a second guide surface that is inclined outward and upward. The baffle can open the sampling hole under the pushing action of the slide rod. The cooperation of the first guide surface and the second guide surface drives the baffle to move down and retract into the second sliding groove to open the sampling hole.

[0015] As a further technical solution, there are several sampling holes, baffles and lifting components, which are arranged along the height direction of the sampling frame.

[0016] As a further technical solution, there are several sampling holes, baffles, and lifting components, arranged along the length of the sampling frame.

[0017] The beneficial effects of this invention are as follows: In this invention, the sampling frame provides stable support, and the lifting and sampling components work together to accurately position the sampling location, ensuring precise connection between the bag opening and the sampling hole. Subsequently, a baffle rises to open the sampling hole, allowing wastewater to flow into the tilted sampling bag for sampling. After sampling, the baffle can descend again to block the sampling hole, preventing further wastewater or impurities from entering. Throughout the process, the various structures work together to automate the entire sampling process, from sampling location positioning and sampling hole opening to wastewater collection and sampling hole closure. This combination improves sampling efficiency and accuracy, reduces manual intervention and labor costs, and effectively avoids sample contamination issues that may arise from manual operation. It ensures the quality and reliability of each sample during continuous sampling, meeting the needs of long-term continuous monitoring of livestock and poultry wastewater. Attached Figure Description To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of the present invention and these drawings without any creative effort.

[0018] Figure 1 This is a schematic diagram of a structure according to an embodiment of the present invention; Figure 2 for Figure 1 Partial structural schematic diagrams in the embodiments; Figure 3 for Figure 2 Schematic diagram of the structure of AA; Figure 4 for Figure 2 A schematic diagram of the structure for removing the sampling bag in the embodiment; Figure 5 for Figure 4 Schematic diagram of the structure of BB; Figure 6 for Figure 4 A schematic diagram of the structure of CC; Figure 7 for Figure 6 A magnified structural diagram of E in the middle; Figure 8 for Figure 1 A schematic diagram of the sampling bag structure in the embodiment; Figure 9 for Figure 1 A schematic diagram of the sliding plate and sampling element in the embodiment; Figure 10 for Figure 9 A schematic diagram of the structure with the tray removed in the embodiment; Figure 11 for Figure 9 A schematic diagram of the structure with the fixture support removed in the embodiment.

[0019] In the diagram: Sampling rack-1, sampling chamber-101, sampling hole-102, clearance groove-103, first sliding groove-104, second sliding groove-105, lifting component-2, first hook-201, support-202, baffle-3, second guide surface-301, sampling component-4, pallet-401, sliding groove-402, clamp support-403, sliding part-404, upper support-405, lower support-406, clamp-407, first elastic component-408, first fixing tube-409, second fixing tube-411, annular inclined groove-412, inclined direction Section-413, Horizontal section-414, Annular fixing groove-415, Clearing hole-416, Through groove-417, Sampling bag-5, Bag opening-501, Storage part-502, Tubular extension part-503, Clamped part-504, Lead screw-6, Rotating part-7, Cam-8, Arc-shaped protrusion-801, Second elastic element-16, Swing locking part-9, Second hook part-901, Sealing rope-10, Elastic lifting part-11, Anti-hooking surface-1101, Flexible sealing ring-12, Slide rod-13, Slider-14, First guide surface-1401, Fourth elastic element-15. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it.

[0021] To keep the drawings concise, each drawing only schematically shows the parts relevant to the invention; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0022] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections 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 invention based on the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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 the present invention.

[0025] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] like Figures 1-11As shown, a continuous sampling device for livestock and poultry breeding wastewater according to an embodiment of the present invention is illustrated. It includes a sampling frame 1 with a sampling chamber 101. The sampling frame 1 is fixed in a wastewater tank in a direction perpendicular to the ground. The cavity wall of the sampling chamber 101 has a sampling hole 102. A lifting member 2 is vertically disposed within the sampling chamber 101. A baffle 3 is vertically disposed on the outside of the sampling frame 1. After sliding, the baffle 3 is used to block or unblock the sampling hole 102. The sampling frame 1 is horizontally slidably disposed on the lifting member 2. A sampling bag 5 is inclinedly disposed on the sampling member 4. The sampling bag 5 has a bag opening 501. During the sliding process of the sampling member 4, the bag opening 501 is connected to the sampling hole 102. After the sampling hole 102 is connected to the bag opening 501, the baffle 3 slides, opening the sampling hole 102, thus completing the sampling.

[0027] In this embodiment, the sampling frame 1 has a sampling chamber 101 and can be fixed vertically to the ground in the sewage tank. This structural design firstly achieves stable installation of the device in the sewage environment, providing a solid foundation for all subsequent sampling operations and preventing the sampling position from shifting due to device shaking. At the same time, the sampling hole 102 on the wall of the sampling chamber 101 serves as a key channel for sewage to enter the device. Its setting directly provides an entrance for sewage sampling, ensuring that sewage can smoothly enter the device and creating the preconditions for the subsequent sampling process.

[0028] The lifting component 2 is vertically adjustable within the sampling chamber 101. The core technological advantage of this structure lies in its ability to adjust its height within the sampling chamber 101. Through lifting motion, the lifting component 2 can drive associated components to adjust their height, thereby meeting the needs of sampling wastewater at different depths in the wastewater tank. Whether it is shallow or deep wastewater, the sampling location can be precisely determined by the lifting of the lifting component 2.

[0029] The baffle 3 is raised and lowered on the outside of the sampling frame 1 tube wall, and its main technical effect is reflected in the control of the opening and closing of the sampling hole 102. When sampling is not required, the baffle 3 lowers to block the sampling hole 102, which can effectively prevent sewage from entering the sampling chamber 101 at will and avoid the accumulation of impurities affecting the accuracy of subsequent sampling. When sampling is required, the baffle 3 rises to remove the obstruction of the sampling hole 102, ensuring that sewage can smoothly enter the device through the sampling hole 102, thus ensuring the smooth progress of the sampling operation.

[0030] The sampling component 4 is horizontally slidably mounted on the lifting component 2. After the lifting component 2 has been adjusted to the correct height, the horizontal sliding of the sampling component 4 allows for further precise adjustment of the position of the sampling bag 5, ensuring that the opening 501 of the sampling bag 5 is accurately aligned and connected to the sampling hole 102. This horizontal adjustment capability, combined with the height adjustment of the lifting component 2, makes the sampling position more accurate, effectively avoiding sampling failure or sample contamination due to positional deviations.

[0031] The sampling bag 5 is tilted on the sampling component 4 and has a bag opening 501. Its primary technical advantage is providing storage space for wastewater samples. The tilted design utilizes gravity, allowing wastewater to flow more smoothly into the sampling bag 5 after the bag opening 501 connects to the sampling hole 102, thus improving sampling efficiency. Simultaneously, the independent design of the sampling bag 5 ensures that samples collected each time do not interfere with each other, effectively preventing cross-contamination and ensuring the purity and accuracy of the samples, providing a reliable sample basis for subsequent water quality testing.

[0032] The sampling frame 1 provides a stable installation and movement space for the lifting component 2, while the lifting movement of the lifting component 2 within the sampling chamber 101 gives the entire sampling device the ability to adjust sampling in the vertical direction. Combined, these two components enable precise positioning and sampling of sewage at different depths in the sewage tank, solving the problem of traditional sampling devices' inflexible adjustment of sampling depth. The fixing function of the sampling frame 1 ensures that the lifting component 2 will not shift during lifting, while the lifting function of the lifting component 2 allows the sampling frame 1 to move beyond fixed-depth sampling, greatly improving the sampling range and applicability of the device.

[0033] The outer wall of the sampling frame 1 provides an installation and movement track for the baffle 3. The baffle 3 controls the opening and closing of the sampling hole 102 on the sampling frame 1 through its lifting movement. This combination achieves effective control of the sampling hole 102. During non-sampling periods, the baffle 3 blocks the sampling hole 102, preventing sewage and impurities from entering the sampling chamber 101, keeping the inside of the sampling chamber 101 clean, and avoiding impurities affecting subsequent sampling. During sampling periods, the baffle 3 opens the sampling hole 102, ensuring that sewage can enter smoothly. This combined approach ensures smooth sewage flow during sampling while avoiding contamination and blockage during non-sampling periods, extending the service life of the device and improving sampling reliability.

[0034] The sampling component 4 provides a mounting carrier and horizontal position adjustment capability for the sampling bag 5. The sampling bag 5 is tilted on the sampling component 4, and the position of the bag opening 501 of the sampling bag 5 can be precisely adjusted by the horizontal sliding of the sampling component 4. When combined, the horizontal adjustment of the sampling component 4 ensures that the bag opening 501 of the sampling bag 5 is accurately aligned with the sampling hole 102, while the tilted design of the sampling bag 5 ensures that wastewater flows smoothly into the storage area. Simultaneously, the combined design of the sampling bag 5 and the sampling component 4 facilitates the replacement and cleaning of the sampling bag 5. During continuous sampling, a new sampling bag 5 can be quickly replaced for the next sampling, effectively improving the efficiency of continuous sampling and avoiding cross-contamination between different samples.

[0035] Sampling frame 1 provides a stable foundation, lifting component 2 adjusts the height, sampling component 4 adjusts the horizontal position, and sampling bag 5 stores the sample. These four components together form a complete and precisely positioned sampling system. Through the coordinated adjustment of lifting component 2 and sampling component 4, the opening 501 of sampling bag 5 can be precisely aligned with the sampling hole 102 on sampling frame 1, ensuring accurate flow of wastewater into sampling bag 5. This multi-structure collaborative approach not only improves the accuracy of the sampling position but also ensures the smoothness of the sampling process, providing strong support for continuous and accurate sampling. It is suitable for scenarios such as livestock and poultry farm wastewater, which has complex composition and requires multiple consecutive sampling analyses.

[0036] The sampling frame 1 provides stable support, while the lifting component 2 and the sampling component 4 work together to accurately position the sampling location, ensuring precise connection between the bag opening 501 of the sampling bag 5 and the sampling hole 102. Subsequently, the baffle 3 rises to open the sampling hole 102, allowing wastewater to flow into the tilted sampling bag 5 for sampling. After sampling, the baffle 3 can descend again to block the sampling hole 102, preventing subsequent wastewater or impurities from entering. Throughout the process, the various structures work together to automate the entire sampling process, from sampling location positioning, opening the sampling hole 102, wastewater collection, to closing the sampling hole 102. This combined approach improves sampling efficiency and accuracy, reduces manual intervention and labor costs, and effectively avoids sample contamination issues that may arise from manual operation. It ensures the quality and reliability of each sample during continuous sampling, meeting the needs of long-term continuous monitoring of livestock and poultry wastewater.

[0037] Furthermore, the sampling chamber 101 and the lifting member 2 have a multi-deformable cross-section in the horizontal direction. The sampling chamber 101 is used to accommodate the lifting and lowering of the lifting member 2 and restrict the rotation of the lifting member 2. The continuous sampling device for livestock and poultry breeding wastewater also includes a lead screw 6, which is rotatably disposed in the sampling chamber 101. The lead screw 6 passes through the lifting member 2 and is used to drive the lifting member 2 to lift and lower. The rotating member 7 is rotatably disposed in the sampling chamber 101 and is located on the side of the lead screw 6 away from the sampling hole 102. A cam 8 is provided on the rotating member 7. After the rotating member 7 rotates, the cam 8 is used to push the sampling member 4 to slide so that the bag opening 501 is connected to the sampling hole 102.

[0038] The sampling chamber 101 and the lifting component 2 adopt a polygonal cross-section design in the horizontal direction. This design effectively restricts the rotation of the lifting component 2 while ensuring stable lifting. Compared to a circular cross-section, the polygonal cross-section, through the fit of its contour edges and corners, forms a circumferential limiting structure, preventing the lifting component 2 from rotating or shifting during its movement within the sampling chamber 101. This ensures the linearity of the lifting component 2's movement and guarantees that the sampling component 4 and sampling bag 5, associated with the lifting component 2, always maintain a preset horizontal orientation. This prevents the opening 501 of the sampling bag 5 from deviating from the sampling hole 102 due to the rotation of the lifting component, laying a structural foundation for subsequent precise docking with the sampling hole 102. Simultaneously, the fitted polygonal cross-section reduces the gap between the lifting component 2 and the wall of the sampling chamber 101, decreasing the amount of wastewater retained in this gap, reducing impurity accumulation, and further improving the stability and service life of the device.

[0039] The lead screw 6 is rotatably positioned within the sampling chamber 101 and passes through the lifting component 2. Its main technical effect is to provide precise and stable lifting driving force for the lifting component 2. The lead screw 6 transmission features high transmission accuracy and smooth operation. Through the rotation of the lead screw 6, the rotational motion can be converted into the linear lifting motion of the lifting component 2, ensuring the stability of the sampling position and further improving the sampling accuracy.

[0040] The rotating component 7 is rotatably mounted within the sampling chamber 101 and is equipped with a cam 8. The core technical effect of their combined operation is to provide a controllable horizontal sliding driving force for the sampling component 4, achieving precise alignment between the bag opening 501 of the sampling bag 5 and the sampling hole 102. The cam 8 has a specific contour curve. When the rotating component 7 drives the cam 8 to rotate, the contour of the cam 8 will contact the sampling component 4 and push it to slide horizontally. By designing the contour curve of the cam 8, the sliding stroke, speed, and stopping position of the sampling component 4 can be precisely controlled, ensuring that the sampling component 4 moves the sampling bag 5 to a position where the bag opening 501 is completely aligned with the sampling hole 102, avoiding alignment deviations caused by manual adjustment or other driving methods. At the same time, the rotating component 7 and the cam 8 have a simple structure, high reliability, and can adapt to the harsh environment of the sewage tank, which is humid and contains many impurities. They are not prone to failure, and the transmission response is rapid, enabling quick completion of the sliding adjustment of the sampling component 4, thus improving the efficiency of the sampling process. In addition, by placing the rotating component 7 on the side of the lead screw 6 away from the sampling hole 102, interference between it and the lifting and lowering movement of the lead screw 6 and the inflow of sewage into the sampling hole 102 can be avoided, ensuring the independence and coordination of the movement of each component.

[0041] The polygonal cross-section of the sampling chamber 101 and the lifting component 2 provides a stable structural foundation for the transmission of the lead screw 6. The polygonal cross-section restricts the rotation of the lifting component 2, ensuring that it can only move linearly along the axis of the lead screw 6, preventing the lead screw 6 from causing the lifting component 2 to rotate synchronously, thus ensuring the efficiency and accuracy of the lead screw transmission. Simultaneously, the lead screw 6 provides precise lifting driving force to the lifting component 2. The combination of these two elements forms a "precise drive + stable guidance" lifting system, which can precisely control the lifting height of the lifting component 2 while ensuring its stability and linearity during the lifting process. Compared to a single lead screw transmission or polygonal cross-section guidance, this combination significantly improves the accuracy and reliability of the lifting component 2's lifting, further ensuring that the sampling component 4 and sampling bag 5 associated with the lifting component 2 can stably reach the target sampling height, creating favorable conditions for subsequent horizontal sampling docking.

[0042] The sampling chamber 101 provides installation and movement space for the rotating component 7, the lifting component 2 provides a horizontal sliding support base for the sampling component 4, and the rotating component 7 and the cam 8 provide precise sliding driving force for the sampling component 4. The four components combine to form a "stable support + precise drive" horizontal adjustment system: the lifting component 2 first reaches the target height through lifting, then the rotating component 7 drives the cam 8 to rotate, pushing the sampling component 4 to slide horizontally on the lifting component 2. Since the lifting component 2 has formed a circumferential limit with the sampling chamber 101 through its polygonal cross-section, the horizontal sliding of the sampling component 4 is not affected by the rotation of the lifting component 2, and can always maintain a straight line movement, ensuring that the bag opening 501 of the sampling bag 5 is precisely aligned with the sampling hole 102. This combination method solves the problem of "easy horizontal adjustment deviation after height adjustment," achieving a dual guarantee of "precise vertical height positioning + precise horizontal alignment," further improving the positioning accuracy of the sampling position and avoiding sampling failure or sample contamination due to alignment deviation.

[0043] The polygonal cross-section of the sampling chamber 101 and the lifting component 2 restricts rotation. The lead screw 6 precisely drives the lifting component 2 to rise and fall, and the rotating component 7 and the cam 8 precisely push the sampling component 4 to slide. The three work together to achieve "three-dimensional precise positioning" of the sampling position with minimal error. This can meet the needs of precise collection of water samples at different depths and levels in sewage tanks. It is especially suitable for scenarios where sewage components are stratified and have uneven concentrations, and can obtain more representative samples.

[0044] Furthermore, the sampling bag 5 has a storage section 502 and a tubular extension section 503 that are interconnected. The storage section 502 has clamping sections 504 on both the upper and lower sides. The sampling component 4 includes a tray 401, which is slidably disposed on the lifting component 2. The tray 401 has a sliding groove 402. The clamp support 403 has a sliding section 404, which is slidably disposed in the sliding groove 402. The clamp support 403 has an upper support section 405 and a lower support section 406 on its upper and lower sides, respectively. The cam 8 is used to push the clamp support 403 to slide. There are at least two clamps 407, which are respectively disposed on the upper support section 405 and the lower support section 406. The clamps 407 are used to clamp the clamping section 504, so that the bag opening 501 is tilted upward. The clamps 407 are connected to the upper support section 405 through a first elastic member 408. The first elastic member 408 is used to provide the clamps 407 with force to flatten the sampling component 4.

[0045] In this embodiment, the sampling bag 5 is fixed and its posture is controlled more reliably. The clamped part 504 of the storage part 502 is clamped by the clamp 407. Combined with the flattening force of the first elastic member 408, the sampling bag 5 can be stably fixed on the clamp support 403 and the bag opening 501 is kept tilted upward. With the height adjustment of the lifting member 2 and the horizontal sliding of the clamp support 403 along the sliding groove 402, it can be ensured that the bag opening 501 is accurately aligned with the sampling hole 102 of the sampling frame 1, avoiding sampling failure due to sampling bag displacement or posture deviation.

[0046] The tubular extension 503 guides the flow of wastewater, allowing it to flow directly into the storage section 502 after exiting the sampling hole 102, thus reducing overflow losses. The first elastic element 408 flattens the sampling bag 5, preventing wastewater from being unable to be sampled under air pressure and increasing the wastewater inflow speed. The large capacity design of the storage section 502 can meet the needs of a single sampling, and with the convenient replacement of the sampling bag 5, it can achieve continuous multiple samplings, making it suitable for high-frequency monitoring scenarios of livestock and poultry breeding wastewater.

[0047] Enhanced structural synergy and operational stability: The sliding fit between the tray 401 and the lifting component 2 allows the sampling component 4 to rise and fall synchronously with the lifting component 2, ensuring that the position of the sampling bag 5 changes synchronously during height adjustment; the cooperation between the sliding part 404 and the sliding groove 402 limits the sliding direction of the clamp support 403, preventing deviation when the cam 8 is pushed; the symmetrical design of the upper support part 405 and the lower support part 406 ensures that the clamp 407 clamps the sampling bag 5 with balanced force, preventing deformation and damage to the sampling bag. The overall structure forms a complete collaborative process of "height adjustment - horizontal docking - clamping and fixing - sewage collection - sample storage", with a high degree of automation, low failure rate, and long-term stable application in the complex environment of sewage treatment plants.

[0048] Furthermore, the clamp support 403 has a first fixing tube 409, which is tubular, and the support plate 401 has a second fixing tube 411, which is tubular. The tubular extension 503 passes through the first fixing tube 409 and the second fixing tube 411 sequentially from the inside, and the end of the extension is sleeved on the outer wall of the second fixing tube 411. After the support plate 401 slides, the second fixing tube 411 is inserted into the sampling hole 102, and the end of the second fixing tube 411 is on the same plane as the sampling hole 102.

[0049] When the rotating component 7 drives the cam 8 to push the clamp support 403 to slide along the sliding groove 402 of the tray 401, the first fixing tube 409 of the clamp support 403 and the second fixing tube 409 of the tray 401 are synchronously linked to ensure that the tubular extension 503 is always in a "double tubular fixation" state. After the tray 401 is adjusted in height with the lifting component 2, the sliding tray 401 makes the second fixing tube 411 inserted into the sampling hole 102, and the end is in contact with the plane of the sampling hole 102. With the design of the tubular extension 503 sleeved on the outer wall of the second fixing tube 411, the gap between the sampling hole 102 and the bag opening 501 is completely eliminated, which not only avoids sewage leakage, but also prevents air from entering and causing sample oxidation, further improving sampling accuracy and sample purity.

[0050] Previously, the sampling bag 5 was only fixed by clamping the clamped part 504 with the clamp 407. After adding the first fixing tube 409 and the second fixing tube 411, the tubular extension 503 gains multiple layers of protection: "clamping and fixing + double tubular fixing". The clamp 407 flattens the sampling bag 5 through the first elastic element 408, avoiding wrinkles at the connection between the storage part 502 and the tubular extension 503; the first fixing tube 409 and the second fixing tube 411 restrict the radial displacement and bending of the tubular extension 503, ensuring that it always maintains a smooth flow channel. After the sewage flows out of the sampling hole 102, it is directly introduced into the tubular extension 503 through the second fixing tube 411 without path deviation or blockage, improving the flow efficiency by more than 30%, while avoiding dead corners of sewage residue caused by bending of the tubular extension.

[0051] The first fixing tube 409 and the sliding part 404 of the clamp support 403 are designed synchronously to ensure that the first fixing tube 409 and the second fixing tube 411 are accurately aligned when the clamp support 403 slides. When changing the sampling bag 5, it is only necessary to loosen the clamp 407 and pull out the tubular extension 503 of the old sampling bag from the first fixing tube 409 and the second fixing tube 411. The tubular extension 503 of the new sampling bag can be inserted in sequence without adjusting the position of the fixing part, making the operation steps simpler. At the same time, the design of the second fixing tube 411 inserting into the sampling hole 102 can help to position the sampling hole 102, avoid the error of manual alignment, and is especially suitable for automated continuous sampling scenarios, reducing the cost of manual intervention.

[0052] After the second fixed tube 411 is inserted into the sampling hole 102, it can block suspended impurities in the sewage from directly entering the sampling chamber 101. Combined with the function of the baffle 3 to close the sampling hole 102 when not sampling, it forms "double protection" and reduces the wear of components such as the lifting part 2 and the lead screw 6 caused by the accumulation of impurities.

[0053] From sampling port 102 → second fixed tube 411 → tubular extension 503 → storage section 502, the entire sampling process forms a "gap-free, bend-free, and residue-free" sample transport path: gap-free to prevent leakage and oxidation, bend-free to ensure smooth flow, and residue-free to prevent cross-contamination of samples. The final collected samples accurately reflect the true concentrations of indicators such as COD, ammonia nitrogen, and total phosphorus in wastewater, providing more reliable data support for the treatment and monitoring of livestock and poultry breeding wastewater.

[0054] Furthermore, the lifting component 2 has a first hook portion 201 and a support portion 202. The continuous sampling device for livestock and poultry breeding wastewater also includes a second elastic component 16. The second elastic component 16 is disposed on the support portion 202 and connected to the support plate 401. The second elastic component 16 is used to provide a force for the support plate 401 to move away from the sampling hole 102. The swing locking component 9 is swing-displaced on the support plate 401. The swing locking component 9 has a second hook portion 901. When the sampling component 4 is installed, the first hook portion 201 is used to hook with the second hook portion 901 to counteract the pulling force of the second elastic component 16. At this time, the sliding portion 404 is positioned... At the end of the sliding groove 402 near the sampling hole 102, after the support plate 401 slides relative to the support plate 401 under the action of the cam 8, the first hook 201 and the second hook 901 are unlocked. The sealing rope 10 is an elastic rope, which is wrapped around the outside of the end of the first fixed tube 409 near the second fixed tube 411. After sampling is completed, the rotating member 7 rotates, and the clamp support member 403 slides under the action of the second elastic member 16. The first fixed tube 409 and the second fixed tube 411 are no longer in contact. The sealing rope 10 is used to lock the middle of the tubular extension 503 to prevent the sampling bag 5 from leaking samples.

[0055] Furthermore, it also includes an elastic lifting member 11, which is disposed on the lifting member 2 and located on one side of the first hook 201. The upper end face of the elastic lifting member 11 has an anti-hooking surface 1101. When the first hook 201 hooks with the second hook 901, the elastic lifting member 11 is pressed by the second hook 901. After the first hook 201 and the second hook 901 are unhooked, the elastic lifting member 11 lifts up the swing locking member 9 to prevent the second hook 901 from hooking with the first hook 201 again, so that the sealing rope 10 cannot be sealed.

[0056] When the sampling component 4 is installed, the second hook 901 of the swing locking component 9 engages with the first hook 201 of the lifting component 2, counteracting the tension of the second elastic component 16, causing the sliding part 404 to stop at the end of the sliding groove 402 near the sampling hole, and the position of the support plate 401 is fixed. After sampling is started, the rotating component 7 drives the cam 8 to push the support plate 401 to slide, and simultaneously drives the swing locking component 9 to swing. The second hook 901 separates from the first hook 201, and the tension of the second elastic component 16 is temporarily overcome by the pushing force of the cam 8. The support plate 401 slides to insert the second fixed tube 411 into the sampling hole 102, completing the docking sampling. After sampling, the cam 8 resets, the tension of the second elastic component 16 is released, and the support plate 401 and the clamp support 403 automatically reset, and the first fixed tube 409 separates from the second fixed tube 411. The entire process does not require manual adjustment of the fixing, resetting or separating components, realizing full automation of "fixing-sampling-resetting", which is suitable for unattended continuous sampling scenarios of livestock and poultry breeding sewage.

[0057] After sampling, the second elastic element 16 drives the clamp support 403 to reset, the first fixed tube 409 and the second fixed tube 411 no longer abut, and the elastic sealing rope 10 wrapped around the outside of the first fixed tube 409 loses external support. Through its own elastic contraction, it precisely locks the middle of the tubular extension 503. This locking method, combined with the initial seal of the tubular extension 503 fitted with the second fixed tube 411, forms a dual sealing system of "seamless connection to prevent leakage during sampling + elastic locking to prevent leakage after sampling". This completely solves the pain point of "leakage during transfer after sampling" in traditional sampling devices, ensuring that there is no sewage leakage from the sampling bag 5, no sample loss or contamination, and ensuring the authenticity and reliability of the test data throughout the entire process from sewage collection to laboratory testing.

[0058] On the one hand, the support 202 provides a stable installation base for the second elastic element 16, preventing it from shifting under stress; the hooking structure of the first hook 201 and the second hook 901 is simple and reliable, and can withstand the continuous tension of the second elastic element 16, ensuring that the initial position of the sampling element 4 is fixed for a long time without the risk of loosening. On the other hand, when installing the sampling element 4, only the locking element 9 needs to be swung to complete the hooking; when replacing the sampling bag 5, the first fixing tube 409 and the second fixing tube 411 are separated in the reset state, and the tubular extension 503 of the old sampling bag can be directly pulled out. After the new sampling bag passes through, the locking element 9 can be swung to fix it. The operation steps are reduced compared with the traditional device, reducing the difficulty of manual operation and time cost.

[0059] The second elastic component 16 is made of elastic material, which can buffer the impact force when the pallet 401 slides, avoid rigid collision between the pallet 401 and the lifting component 2, and between the cam 8 and the pallet 401, and reduce component wear; the swing locking component 9 has a swing structure without rigid friction, and with the lubricated swing shaft, it can adapt to the humid environment of the sewage tank for a long time and is not easy to rust or jam; the sealing rope 10 is an elastic rope that can be reused and is resistant to sewage corrosion, so it does not need to be replaced frequently.

[0060] From the initial hook 201 and the second hook 901 engaging and fixing the position before sampling, to the seamless insertion of the second fixing tube 411 into the sampling hole 102 during sampling, and finally to the subsequent locking and leak-proofing by the second elastic element 16 and the sealing rope 10, the entire process forms a closed loop for sample quality control: fixed position, precise docking, and sealed storage. No initial position offset ensures accurate sampling, no docking gaps ensure no external leakage or oxidation of the sample, and no storage leakage ensures no sample loss or contamination.

[0061] Furthermore, the first fixing tube 409 has an annular inclined groove 412 at one end near the second fixing tube 411. The annular inclined groove 412 is used to accommodate the sealing rope 10. The first fixing tube 409 is inclined upward. The second fixing tube 411 has an inclined section 413 and a horizontal section 414. The inclined section 413 abuts against the first fixing tube 409 and is on the same straight line after abutting. The horizontal section 414 is smoothly connected to the inclined section 413 and is used to insert into the sampling hole 102.

[0062] During the reset phase after sampling, the cam 8 resets, causing the second elastic element 16 to move the support plate 401 and the swing locking element 9 away from the sampling hole 102. At the instant the first hook 201 and the second hook 901 separate, the elastic lifting element 11 immediately releases its elastic potential energy, lifting the swing locking element 9. The anti-hooking surface 1101 guides the swing locking element 9 to rotate upward through its smooth surface, ensuring that the second hook 901 is always in a position "higher than the first hook 201", completely blocking the path for the two to re-hook due to accidental factors such as device vibration and water flow impact. This design avoids the problem of "mis-hooking causing the clamp support 403 to fail to reset completely and the first fixed tube 409 and the second fixed tube 411 to remain in contact", ensuring that the middle part of the tubular extension 503 can completely lose support, providing sufficient space for the elastic contraction and locking of the sealing rope 10, and eliminating the risk that the sealing rope 10 will not be able to fit the tubular extension 503 due to mis-hooking and that a sealing gap will occur.

[0063] Throughout the sampling process, the elastic lifting member 11, the second elastic member 16, and the swing locking member 9 form a coordinated "reset-anti-lock" action: after sampling, the second elastic member 16 provides a reset pulling force to the support plate 401, causing the swing locking member 9 to move away from the first hook 201; at the same time, the elastic lifting member 11 lifts the swing locking member 9, ensuring that the swing locking member 9 remains stably in the non-hooked position through the dual force, preventing it from falling back due to inertia during the reset process. This coordination not only reduces the stress load on a single elastic member and extends its service life, but also makes the "separation-reset-anti-lock" action chain more coherent, achieving precise control without manual intervention.

[0064] In the complex environment of a sewage tank with high humidity, numerous impurities, and strong vibrations, the elastic structure of the elastic lifting component 11 can buffer the impact of vibrations generated during sampling on the swing locking component 9, preventing it from swinging disorderly due to vibration. The smooth design of the anti-hooking surface 1101 reduces the accumulation of suspended matter in the sewage on the contact surface, preventing the elastic lifting component 11 from failing to lift properly due to impurities. By ensuring that the swing locking component 9 is stably in a non-hooked state, the first fixing tube 409 and the second fixing tube 411 can be completely separated, and the middle part of the tubular extension 503 can hang down naturally, allowing the sealing rope 10 to evenly wrap around the tubular extension 503, forming a tight annular seal through elastic contraction, completely preventing sewage leakage from the sampling bag 5. This synergy allows the device to maintain the effect of "sampling must be sealed, and sealing must be airtight" even under harsh working conditions, ensuring that the entire process from sample collection to transfer is lossless and pollution-free.

[0065] Furthermore, the outer wall of the horizontal section 414 has an annular fixing groove 415. The continuous sampling device for livestock and poultry breeding wastewater also includes a flexible sealing ring 12. The flexible sealing ring 12 is set in the annular fixing groove 415. The outer diameter of the flexible sealing ring 12 is larger than the outer wall diameter of the horizontal section 414. When the horizontal section 414 is inserted into the sampling hole 102, the tubular extension 503 is pressed against the side wall of the sampling hole 102 by the flexible sealing ring 12.

[0066] During the sampling stage, the horizontal section 414 slides into the sampling hole 102 along with the support plate 401. At this time, the flexible sealing ring 12 in the annular fixing groove 415, due to its larger outer diameter, is squeezed by the side wall of the sampling hole 102. On the one hand, the deformation of the sealing ring itself fills the gap between the horizontal section 414 and the sampling hole 102, preventing sewage from leaking between the outer wall of the horizontal section and the side wall of the sampling hole. On the other hand, the sealing ring tightly presses the tubular extension 503, which is sleeved on the outside of the horizontal section 414, against the side wall of the sampling hole 102, so that the tubular extension 503 and the side wall of the sampling hole form a "flexible fit seal", blocking sewage from leaking out from the gap between the tubular extension and the sampling hole. This "double gap seal" design improves the sealing reliability compared to the previous method that only relied on the planar fit between the second fixing tube 411 and the sampling hole.

[0067] Due to long-term use, the sampling port 102 of the livestock and poultry breeding wastewater tank may experience sidewall wear and unevenness. The high elasticity of the flexible sealing ring 12 can adapt to these minor defects through deformation, filling the gaps in the sidewall and preventing sealing failure caused by unevenness of the sampling port. At the same time, the fixing groove 415 ensures that the sealing ring will not shift or fold when the horizontal section 414 is inserted into the sampling port 102, maintaining a uniform annular seal. Even when the horizontal section 414 shakes slightly due to device vibration or water flow impact, the flexible sealing ring 12 can maintain close contact with the sidewall of the sampling port and the tubular extension 503 through elastic buffering, ensuring that the sealing performance does not decrease and adapting to the complex operating conditions of the wastewater tank.

[0068] When the horizontal section 414 is inserted into the sampling hole 102, the tubular extension 503 is pressed against the side wall of the sampling hole 102 by the flexible sealing ring 12. This pressing method avoids excessive compression of the tubular extension 503, preventing blockage, and ensures that there is no gap at the joint between the tubular extension 503 and the sampling hole 102. After the wastewater flows out of the sampling hole 102, it can smoothly pass through the tubular extension 503 into the storage section 502. At the same time, due to the sealing effect of the sealing ring, no wastewater leaks into the sampling frame 1 or the external environment, achieving a balance between "smooth flow" and "reliable sealing". Combined with the previous sealing rope 10 locking the tubular extension 503 after sampling, a full-stage sealing protection of "joint sealing during sampling + end sealing after sampling" is formed, ensuring that the sample is not damaged during collection and storage.

[0069] The elastic lifting component 11 prevents accidental hooking and ensures sealing, while the second fixing pipe 411 achieves a planar fit and connection. The newly added flexible sealing ring 12 further fills the sealing gap between the horizontal section 414 and the sampling hole 102, upgrading the device's leak-proof system from "initial fixing to prevent offset - docking plane leak prevention - post-sampling locking leak prevention" to "initial fixing to prevent offset - multi-layer docking sealing - post-sampling locking leak prevention." From the moment wastewater enters the sampling hole 102 to flow into the storage section 502, and then to the transfer after sampling, the entire process is free of wastewater leakage and air ingress, completely preventing sample oxidation or contamination and extending the overall service life of the device.

[0070] Furthermore, the clamp support 403 has a clearance hole 416, through which the lead screw 6 passes. The cam 8 has an arc-shaped protrusion 801 located below the cam 8. The inner wall of the sampling chamber 101 also has a clearance groove 103, which has a first sliding groove 104 and a second sliding groove 105 that are perpendicular to each other. The support plate 401 also has a through groove 417 that communicates with the clearance groove 103. The continuous sampling device for livestock and poultry breeding wastewater also includes a slide rod 13, which is slidably disposed in the through groove 417. After the moving part 7 rotates, the arc-shaped protrusion 801 pushes the sliding rod 13 to slide, and the slider 14 is slidably disposed in the relief groove 103. The slider 14 has a first guide surface 1401, and the baffle 3 has a second guide surface 301. The first guide surface 1401 abuts against the second guide surface 301. After the sliding rod 13 slides, it pushes the slider 14 to slide. After the slider 14 slides, it pushes the baffle 3 to open the sampling hole 102. The baffle 3 is connected to the inner wall of the second sliding groove 105 through the fourth elastic element 15. The fourth elastic element 15 provides the baffle 3 with the force to close the sampling hole 102.

[0071] When the device starts sampling, the rotating component 7 drives the cam 8 to rotate. On one hand, the cam 8 pushes the clamp support 403 to slide, so that the tubular extension 503 of the sampling bag 5 aligns with the sampling hole 102. On the other hand, the arc-shaped protrusion 801 below the cam 8 pushes the slide rod 13 to slide along the through groove 417. The slide rod 13 pushes the slider 14 to slide horizontally along the first sliding groove 104. The slider 14, through the inclined surface cooperation between the first guide surface 1401 and the second guide surface 301, pushes the baffle 3 to rise along the second sliding groove 105, automatically opening the sampling hole 102, and allowing sewage to flow smoothly into the sampling bag 5. After sampling is completed, the rotating component 7 drives the cam 8 to reset, the arc-shaped protrusion 801 disengages from the slide rod 13, and the fourth elastic component 15 pulls the baffle 3 down, automatically closing the sampling hole 102. The entire process does not require manual control of the baffle 3, realizing fully automatic linkage of "alignment-opening-sampling-closing", improving sampling efficiency and adapting to unattended scenarios.

[0072] The clearance hole 416 provides clearance for the lead screw 6, ensuring that the sliding of the clamp support 403 does not conflict with the lead screw 6; the through groove 417 communicates with the clearance groove 103, ensuring that the slide rod 13 can accurately push the slider 14; the "L"-shaped design of the clearance groove 103 enables the slider 14 to smoothly turn from horizontal movement to vertical movement of the baffle 3. Through the "clearance-guidance" design, each component ensures the accurate transmission of power from the cam 8 to the baffle 3, while avoiding mutual interference between internal components during movement, thus ensuring the overall operational stability of the device.

[0073] The arc-shaped design of the arc-shaped protrusion 801 makes the slide bar 13 slide smoothly, driving the slider 14 and the baffle 3 to move smoothly, avoiding the baffle 3 from rapidly impacting the sampling hole 102 and causing damage to the sealing surface; the fourth elastic element 15 provides a continuous and uniform restoring force, ensuring that the baffle 3 can fit tightly against the cavity wall of the sampling hole 102 without gaps when closed, completely blocking sewage from entering the sampling cavity 101 during non-sampling periods, avoiding the accumulation of impurities and contaminating the components, while preventing sewage leakage, ensuring the cleanliness of the device interior and the cleanliness of the sampling environment.

[0074] From adjusting the sampling position, connecting the sampling bag, and switching the sampling port 102, to resetting and sealing after sampling to prevent leakage, the entire sampling process is 100% automated, requiring no manual operation. This fully automated design not only reduces labor costs but also avoids errors that may be caused by manual operation, making the device more suitable for the high-frequency, long-term continuous sampling of livestock and poultry breeding wastewater, and greatly improving its practicality.

[0075] The smooth drive of the arc-shaped protrusion 801 and the buffering effect of the fourth elastic element 15 reduce rigid impact between components and reduce wear; the guiding effect of the clearance groove 103 and the through groove 417 avoids abnormal friction caused by component sliding and displacement; together with the protection of the sampling chamber 101, it can adapt to the complex environment of sewage tank with moisture and many impurities, reduce the failure rate, and extend the overall service life of the device.

[0076] Furthermore, there are several sampling holes 102, baffles 3 and lifting components 2, arranged along the length of the sampling frame 1.

[0077] Each baffle 3 is reset and closed by an independent fourth elastic element 15, ensuring that each sampling hole 102 fits tightly when closed, preventing sewage leakage. When the tubular extension 503 of each sampling assembly connects to the sampling hole 102, it is sealed by the flexible sealing ring 12 of the horizontal section 414 to avoid cross-contamination when sampling at different depths. At the same time, the clearance holes 416 of each lifting component 2 provide clearance for the corresponding lead screw 6, and each slide rod 13 slides in an independent through groove 417, ensuring that multiple units do not interfere with each other when moving, guaranteeing the stability and sealing of the overall operation of the device, and preventing malfunctions caused by component conflicts even when multiple units are working simultaneously.

[0078] Traditional single-depth sampling devices require repeated adjustments to the device height and replacement of sampling bags to obtain water samples from multiple depths, which is time-consuming and labor-intensive. This device, however, with its multi-unit structural design, can complete multi-depth sampling in one go, or achieve time-sharing sampling through automated control, eliminating the need for repeated manual operation. Furthermore, the sampling bags 5 of each sampling unit can be replaced independently, and replacing one sampling bag does not affect the operation of other units, further reducing manual intervention time and lowering the labor and time costs of large-scale, high-frequency sampling, thus meeting the needs of long-term continuous monitoring of livestock and poultry wastewater.

[0079] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A continuous sampling device for livestock and poultry breeding wastewater, characterized in that, include: A sampling frame (1) is used to be installed in a sewage tank. The sampling frame (1) has a sampling cavity (101) and is perpendicular to the ground. The cavity wall of the sampling cavity (101) has a sampling hole (102). Lifting component (2), which is lifted and disposed within the sampling chamber (101); A baffle (3) is raised and lowered on the outside of the sampling frame (1). After the baffle (3) slides, it is used to block the sampling hole (102). The sampling component (4) is horizontally slidably mounted on the lifting component (2); The sampling bag (5) is placed on the sampling component (4). The sampling component (4) can move up and down with the lifting component (2) and slide horizontally relative to the lifting component (2) to drive the bag opening (501) of the sampling bag (5) to communicate with the sampling hole (102). The baffle (3) can open the sampling hole (102) to complete the sampling.

2. The continuous sampling device for livestock and poultry breeding wastewater according to claim 1, characterized in that, The horizontal projections of the sampling chamber (101) and the lifting member (2) are both polygons. The sliding member (2) and the sampling chamber (101) are used to restrict the circumferential rotation of the sliding member (2). The continuous sampling device for livestock and poultry breeding wastewater also includes: A lead screw (6) is provided through the lifting member (2) and threadedly engaged with the lifting member (2), and is used to drive the lifting member (2) to lift. A rotating component (7) is rotatably disposed in the sampling chamber (101) and located on the side of the lead screw (6) away from the sampling hole (102). A cam (8) is provided on the output end of the rotating component (7). After the rotating component (7) rotates, the cam (8) can rotate circumferentially to push the sampling component (4) to slide towards the side closer to the sampling hole (102), so as to drive the bag opening (501) to move to communicate with the sampling hole (102) by means of the sampling component (4).

3. The continuous sampling device for livestock and poultry breeding wastewater according to claim 2, characterized in that, The sampling bag (5) has a storage section (502) that is interconnected with each other and a tubular extension (503) that is connected above the storage section (502) and communicates with the storage section (502). The storage section (502) has clamping sections (504) on both the upper and lower sides. The sampling element (4) includes: A pallet (401) is slidably mounted on the lifting member (2); A clamp support (403) is horizontally slidably disposed on the tray (401). The clamp support (403) has an upper support portion (405) and a lower support portion (406) on the side near the sampling hole (102). The cam (8) is used to push the clamp support (403) to slide relative to the tray (401). Clamps (407), at least two clamps (407), are respectively connected and disposed on the upper support part (405) and the lower support part (406) by a first elastic member (408). The first elastic member (408) is used to provide the clamps (407) with force to flatten the sampling bag (5). The clamps (407) are used to clamp the clamped part (504) so ​​that the bag opening (501) is tilted upward. The first elastic element (408) is used to provide the clamp (407) with force to flatten the sampling member (4). The clamp (407) is connected to the upper support (405) via the first elastic element (408).

4. The continuous sampling device for livestock and poultry breeding wastewater according to claim 3, characterized in that, The clamp support (403) also has a first fixing tube (409), and the tray (401) has a second fixing tube (411). The second fixing tube (411) can be inserted into the sampling hole (102) under the sliding action of the tray (401). The tubular extension (503) is arranged to pass through the first fixing tube (409) and the second fixing tube (411) in sequence.

5. A continuous sampling device for livestock and poultry breeding wastewater according to claim 4, characterized in that, The lifting component (2) has a first hook (201) and a support (202) at its top. The support (202) is positioned facing the sampling hole (101) and is located on the side of the first hook (201) away from the sampling hole (101). The continuous sampling device for livestock and poultry breeding wastewater further includes: The second elastic element (16) is disposed on the support (202) and connected to the tray (401). The second elastic element (16) is used to provide a force that moves the tray (401) away from the sampling hole (102). A swing locking member (9) is swingably mounted on the clamp support member (403). The swing locking member (9) has a second hook (901). The first hook (201) can hook with the second hook (901) to lock the position of the sampling member (4) relative to the lifting member (2). The hook is released when the cam (8) pushes the tray (401) close to 101. The sealing rope (10) is an elastic rope. The sealing rope (10) is attached to the outer periphery of the first fixing tube (409) and is located near the second fixing part (411). The rotating part (7) rotates, and the clamp support (403) slides under the action of the second elastic part (16). The first fixing tube (409) and the second fixing tube (411) are no longer in contact. The sealing rope (10) is used to lock the middle part of the tubular extension (503) to prevent the sampling bag (5) from leaking samples.

6. The continuous sampling device for livestock and poultry breeding wastewater according to claim 5, characterized in that, Also includes: An elastic lifting member (11) is provided on the lifting member (2) and located on one side of the first hook (201). The top of the elastic lifting member (11) has an anti-hooking surface (1101). When the first hook (201) hooks with the second hook (901), the elastic lifting member (11) is pressed by the second hook (901). After the first hook (201) and the second hook (901) are unhooked, the elastic lifting member (11) swings the swing locking member (9) upward to prevent the second hook (901) from hooking with the first hook (201) again.

7. A continuous sampling device for livestock and poultry breeding wastewater according to claim 6, characterized in that, The outer periphery of the first fixing tube (409) has an annular inclined groove (412) for accommodating the sealing rope (10). The first fixing tube (409) is inclined upward towards the side near the sampling chamber (101). The second fixing tube (411) has an inclined section (413) and a horizontal section (414). The inclined section (413) is used to connect with the first fixing tube (409), and the horizontal section (414) is used to insert into the sampling hole (102).

8. A continuous sampling device for livestock and poultry breeding wastewater according to claim 7, characterized in that, The outer wall of the horizontal section (414) has an annular fixing groove (415), and a flexible sealing ring (12) is provided in the annular fixing groove (415). The outer diameter of the flexible sealing ring (12) is larger than the outer wall diameter of the horizontal section (414), and the horizontal section (414) is inserted into the sampling hole (102).

9. A continuous sampling device for livestock and poultry breeding wastewater according to claim 3, characterized in that, The lead screw (6) passes through the clamp support (403), the bottom of the cam (8) has an arc-shaped protrusion (801), the inner wall of the sampling chamber (101) also has a relief groove (103), the relief groove (103) includes a first sliding groove (104) and a second sliding groove (105) that are perpendicular to each other, the baffle (3) is slidably disposed in the second sliding groove (105), the support plate (401) also has a through groove (417) for communicating with the relief groove (103), the relief groove (103) The inner slide is provided with a slider (14), the slider (14) has a first guide surface (1401) that is inclined outward and upward, and the baffle (3) has a second guide surface (301) that is inclined outward and upward. The baffle (3) can open the sampling hole (102) under the pushing action of the slide rod (13). The cooperation of the first guide surface (1401) and the second guide surface (301) drives the baffle (3) to move down and retract into the second sliding groove (105) to open the sampling hole (102).

10. A continuous sampling device for livestock and poultry breeding wastewater according to claim 2, characterized in that, The sampling holes (102), the baffle (3) and the lifting components (2) are all multiple and are arranged along the height direction of the sampling frame (1).

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