Piglet feces heavy metal on-line sampling and conveying mechanism

Abstract

The present application particularly relates to a kind of piglet fecal heavy metal on-line sampling and conveying mechanism, belongs to sampling device technical field.The piglet fecal heavy metal on-line sampling and conveying mechanism includes sampling head and sampling bag.Sampling head includes oppositely arranged first end and second end, sampling head is provided with traction channel passing through first end and second end, traction channel is movably provided with traction component, the end face of second end is arc surface, arc surface is smoothly connected with the inner wall of port of traction channel close to second end, around the circumference of sampling head, the peripheral wall of sampling head is provided with positioning recess.Sampling bag mouth is provided with elastic sleeve, bag mouth is sleeved in positioning recess, around the circumference of bag mouth, the side of bag mouth away from sampling head is provided with end sealing ring, from bag mouth to the bottom of sampling bag, sampling bag is provided with multiple middle sealing rings, middle sealing ring is arranged around the circumference of sampling bag, bottom is connected to traction component, and the device can improve the sampling efficiency of feces.

Description

Technical Field

[0001] This invention belongs to the field of sampling device technology, specifically relating to an online sampling and conveying mechanism for heavy metals in piglet feces. Background Technology

[0002] Large-scale pig farming involves the long-term addition of large amounts of inorganic copper and zinc trace elements. The metal elements that are not absorbed by the body are excreted with the feces, resulting in the accumulation of heavy metals in the feces and posing a risk of soil and water pollution. This is the core pain point in the treatment of non-point source pollution from livestock and poultry farming.

[0003] The applicant uses weaned piglets as the research subject to investigate the effects of different combinations of organic trace elements on piglet growth performance, fecal heavy metal content, and antibiotic resistance gene abundance. The aim is to determine the optimal integrated application technology scheme for environmentally friendly regulation of organic trace elements, and to develop source reduction integrated application technology that reduces emissions, increases efficiency, lowers metal emissions, and ensures environmental safety.

[0004] In the research process, how to collect feces is a crucial aspect. Typically, multiple sampling points are required within the same piglet pen, covering piglets at different growth stages, resulting in a high sampling frequency and a large sample size. Existing conventional sampling tools are only equipped with a single sampling tip. After each sampling, the surface of the tool becomes contaminated with feces and pathogens. If the tool is not thoroughly cleaned before proceeding to the next set of sampling, cross-contamination between samples from different locations and pens can easily occur, interfering with the accuracy of the data on microorganisms, pathogens, and contaminants. Furthermore, the traditional sampling method involves individually dispensing each sample into a separate test tube. After multiple batches and multiple pens of sampling, a large number of dispensed test tubes are generated, making on-site collection and transportation extremely cumbersome.

[0005] In summary, improving sampling efficiency is a technical problem that urgently needs to be solved. Summary of the Invention

[0006] In view of the problems existing in the prior art, the purpose of the present invention is to provide an online sampling and transportation mechanism for heavy metals in piglet feces, which can improve sampling efficiency.

[0007] To achieve the above-mentioned objectives, the technical solution adopted by this invention is as follows: This application provides an online sampling and conveying mechanism for heavy metals in piglet feces, including a sampling head and a sampling bag. The sampling head includes a first end and a second end arranged opposite to each other. The sampling head is provided with a traction channel penetrating the first and second ends. A traction component is movably arranged within the traction channel. The end face of the second end is an arc surface, which is smoothly connected to the inner wall of the traction channel near the second end. A positioning recess is provided on the peripheral wall of the sampling head around its circumference. An elastic sleeve is provided at the opening of the sampling bag, and the opening is fitted into the positioning recess. An end sealing ring is provided on the side of the opening away from the sampling head around its circumference. From the opening to the bottom of the sampling bag, multiple central sealing rings are spaced apart, and the central sealing rings are arranged around the circumference of the sampling bag. The bottom of the bag is connected to the traction component.

[0008] In some embodiments, a hand-held portion is provided at the first end, and a drive rope is provided on the hand-held portion, which is connected to the traction component.

[0009] In some embodiments, the traction component includes a mating portion that is slidably connected to the traction channel, and a connecting portion is provided at the end of the mating portion near the second end.

[0010] In some embodiments, the surface of the central sealing ring is wavy.

[0011] In some embodiments, a feeding assembly is further included, which includes a receiving cavity and a plurality of fixing components. The receiving cavity has an opening at the top, and the plurality of fixing components are disposed on the inner wall of the receiving cavity for fixing the sampling bag and for expanding the sampling bag, with the bag opening facing the opening of the receiving cavity. The plurality of fixing components are spaced apart along the axial direction of the opening of the receiving cavity.

[0012] In some embodiments, the fixing member includes a first limiting portion and a second limiting portion. The first limiting portion is connected to the sidewall of the receiving cavity, and gradually bends towards the opening of the receiving cavity from the side of the first limiting portion near the sidewall of the receiving cavity to the side away from the sidewall of the receiving cavity. The second limiting portion is movably connected to the sidewall of the receiving cavity along the thickness direction of the sidewall of the receiving cavity, and the second limiting portion is disposed on the side of the first limiting portion near the opening of the receiving cavity.

[0013] In some embodiments, the receiving cavity includes a bottom wall facing the opening of the receiving cavity, and the bottom wall is provided with a squeezing part for pushing the sampling bag closest to the sampling head into contact with the traction member.

[0014] In some embodiments, an elastic element is provided between the extrusion portion and the bottom wall.

[0015] In some embodiments, the extrusion portion and the second limiting portion are drive-connected.

[0016] In some embodiments, a transport assembly is further included, comprising a vehicle body and a transport cavity. The transport cavity is disposed within the vehicle body, and a plurality of partitions are detachably disposed from top to bottom within the transport cavity, the partitions being provided with through holes.

[0017] The present invention has the following beneficial effects:

[0018] 1. During the sampling process, only the sampling bag comes into contact with the feces, while the sampling head does not come into contact with the feces. After sampling, there is no need to clean the sampling head, which improves sampling efficiency and reduces the risk of cross-contamination of samples.

[0019] 2. During the sampling process, the sampling can be completed simply by driving the traction component to move within the traction channel. The required operating space is minimal, which allows the structure of the device to be designed to be more compact and meet the requirement of passing through the holes of the grid plate.

[0020] 3. This device can both suck up feces through negative pressure and scrape up feces, ensuring the success rate and reliability of sampling. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the assembly structure of the sampling head and sampling bag of the present invention;

[0022] Figure 2 This is a schematic diagram of the actual structure of the sampling head (with the mating part at the first end) of the present invention;

[0023] Figure 3 This is a schematic diagram of the actual structure of the sampling head (with the mating part inserted into the traction channel) of the present invention;

[0024] Figure 4 This is a schematic diagram of the actual structure of the sampling head (showing the second end) of the present invention;

[0025] Figure 5 This is a schematic diagram of the actual assembly structure of the sampling head and sampling bag of the present invention;

[0026] Figure 6 This is a schematic diagram showing the contact state between the sampling head of the present invention and the feces in the septic tank;

[0027] Figure 7 This is a schematic diagram of the sampling head in the flipped state of the present invention;

[0028] Figure 8 This is a diagram showing the contact state between the sampling head of the present invention and sweet potato starch;

[0029] Figure 9 This is a diagram showing the sampling head of the present invention suspended and stationary during sampling.

[0030] Figure 10 This is a diagram showing the state of the sampling bag of the present invention moving to the second end;

[0031] Figure 11 This is a diagram showing the sampling head of the present invention (with the sampling bag not removed) at the end of sampling.

[0032] Figure 12 This is a diagram showing the state of the sampling bag of the present invention when it contains sweet potato starch;

[0033] Figure 13 This is a schematic diagram showing the cooperation between the sampling head and the receiving cavity of the present invention;

[0034] Figure 14 Figure 13 Enlarged view of point A;

[0035] Figure 15 This is a schematic diagram of the feeding assembly of the present invention;

[0036] Figure 16 This is a schematic diagram illustrating the fit between the sampling bag and the receiving cavity of the present invention;

[0037] Figure 17 This is a schematic diagram of the working state of the vehicle-mounted sampling bag of the present invention.

[0038] Reference numerals: 1-Sampling head, 11-First end, 12-Second end, 13-Traction channel, 14-Positioning recess, 2-Handheld part, 3-Traction component, 31-Matching part, 32-Connecting part, 33-Drive rope, 4-Sampling bag, 41-Elastic sleeve, 42-End sealing ring, 43-Middle sealing ring, 44-Bag bottom, 45-Bag opening, 5-Feeding assembly, 51-First limiting part, 52-Second limiting part, 53-Squeezing part, 54-Receiving cavity, 6-Transportation assembly, 61-Vehicle body, 62-Transportation cavity, 63-Partition plate, 64-Through hole. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0040] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, 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, and therefore should not be construed as a limitation of this invention.

[0041] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 This application provides an online sampling and delivery mechanism for heavy metals in piglet feces, including a sampling head 1 and a sampling bag 4. The sampling head 1 includes a first end 11 and a second end 12 disposed opposite to each other. The sampling head 1 is provided with a traction channel 13 that passes through the first end 11 and the second end 12. A traction component 3 is movably disposed in the traction channel 13. The end face of the second end 12 is an arc surface, which is smoothly connected to the inner wall of the port of the traction channel 13 near the second end 12. A positioning recess 14 is provided on the circumferential wall of the sampling head 1. An elastic sleeve 41 is provided at the opening 45 of the sampling bag 4. The opening 45 is fitted into the positioning recess 14. An end sealing ring 42 is provided on the side of the opening 45 away from the sampling head 1. Multiple middle sealing rings 43 are provided at intervals from the opening 45 to the bottom 44 of the sampling bag 4. The middle sealing rings 43 are arranged around the circumference of the sampling bag 4. The bottom 44 is connected to the traction component 3.

[0042] The first end 11 can be the top of the sampling head 1, and the second end 12 can be the bottom of the sampling head 1.

[0043] The traction component 3 can move along the traction channel 13, and a spring can be provided between the traction component 3 and the sampling head 1.

[0044] The curved surface of the second end 12 can be smoothly connected to the peripheral wall of the sampling head 1 and the inner peripheral wall of the traction channel 13, respectively. This reduces the risk of the sampling bag 4 being scratched by the edges of the sampling head 1 when it moves in contact with the second end 12.

[0045] The positioning recess 14 is used to accommodate the elastic sleeve 41 of the bag opening 45, so that the sampling bag 4 can be fitted onto the sampling head 1, and the position of the sampling bag 4 relative to the sampling head 1 can be fixed.

[0046] The bottom 44 of the sampling bag 4, away from the bag opening 45, is recessed into the traction channel 13 and connected to the traction component 3. In this way, when the traction component 3 moves towards the first end 11, the sampling bag 4 can move into the traction channel 13.

[0047] The end sealing ring 42 is used to seal the opening 45 of the sampling bag 4 after it is removed from the sampling head 1. That is, when the sampling bag 4 is removed from the sampling head 1, the opening 45 of the sampling bag 4 can be reduced under the action of the elastic sleeve 41 of the sampling bag 4, so that the end sealing ring 42 closes and the opening 45 of the sampling bag 4 is sealed.

[0048] The end sealing ring 42 can be made of an elastic material. On the one hand, the end sealing ring 42 can play a sealing role. On the other hand, the end sealing ring 42 can increase the structural strength of the bag opening 45.

[0049] The central sealing ring 43 can also be made of an elastic material. On the one hand, the central sealing ring 43 can play a sealing role. On the other hand, the central sealing ring 43 can increase the structural strength of the bag opening 45, and it can also scrape up the feces 7.

[0050] See Figure 6 and Figure 7 When using this device for sampling, first insert the sampling head 1 under the grating of the piglet pen into the manure pit, so that the second end 12 of the sampling head 1 comes into contact with the manure 7. Then drive the traction component 3 to move towards the first end 11 of the sampling head 1. As the traction component 3 moves, on the one hand, when the second end 12 contacts the manure 7, the bottom 44 of the bag partially forms a closed chamber inside the traction channel 13. In this way, the manure 7 can be sucked into the sampling bag 4 by negative pressure, and will not leak under the action of negative pressure. On the other hand, even if the feces are relatively dry, there is a gap between the sampling bag 4 and the feces 7, and the bottom 44 of the sampling bag 4 does not form a closed chamber. During the process of the middle sealing ring 43 moving into the traction channel 13, when the middle sealing ring 43 moves to the port of the traction channel 13 near the second end 12, the middle sealing ring 43 can scrape the feces 7 into the sampling bag 4. As the traction component 3 continues to move, the middle sealing ring 43 is completely moved into the traction channel 13. The middle sealing rings 43 abut against each other, and the middle sealing ring 43 and the bottom 44 of the traction bag form a closed chamber, so that the feces 7 will not leak out.

[0051] After sampling is completed, lift the sampling head 1. The central sealing ring 43 prevents the sampling bag 4 from falling along the traction channel 13. Further move the traction component 3 until the opening 45 of the sampling bag 4 is pulled to the port of the traction channel 13 near the second end 12. The sampling bag 4 flips over, and the end sealing ring 42 switches to be inside the sampling bag 4, closing the opening 45 of the sampling bag 4 and sealing it under the action of the end sealing ring 42. Then, lift the sampling head 1 and invert it so that the first end 11 is below and the second end 12 is above, and pull the sampling bag 4 out of the traction channel 13 from the second end 12. For the next sampling, simply replace it with a new sampling bag 4.

[0052] It should be noted that after lifting the sampling head 1, it can be left to stand for a period of time until no more feces 7 drips down, and then the opening 45 of the sampling bag 4 can be closed. This reduces the risk of the opening 45 of the sampling bag 4 being contaminated with feces 7.

[0053] The advantages of using this device for sampling are twofold. First, during the sampling process, only the sampling bag 4 and the feces 7 come into contact; the sampling head 1 does not. Therefore, cleaning of the sampling head 1 is unnecessary after sampling, improving sampling efficiency and reducing the risk of cross-contamination. Second, sampling can be completed simply by moving the traction component 3 within the traction channel 13, requiring minimal operating space. This allows for a more compact design, meeting the requirement of passing through the holes in the grid plate. Third, the device can both suck up and scrape up the feces 7 using negative pressure, ensuring a high sampling success rate and reliability.

[0054] See Figure 1 In some embodiments, the first end 11 is provided with a hand-held part 2, the hand-held part 2 is provided with a drive rope 33, and the drive rope 33 is connected to the traction component 3.

[0055] The handheld part 2 is for the user to hold and use, making it easy to move the sampling head 1.

[0056] The drive rope 33 can be used to pull the traction component 3, thereby driving the traction component 3 to move.

[0057] In some embodiments, the traction component 3 includes a mating part 31, which is slidably connected to the traction channel 13, and a connecting part 32 is provided at the end of the mating part 31 near the second end 12.

[0058] The mating part 31 moves along the traction channel 13, so that the mating part 31 can pull the sampling bag 4 to move.

[0059] The connecting part 32 is used to connect the sampling bag 4 to the mating part 31. The connecting part 32 can be selected from the prior art; for example, the connecting part 32 can be a clamping structure.

[0060] When the bottom 44 of the sampling bag 4 moves to the limit position at the first end 11, the bottom 44 of the sampling bag 4 can protrude from the sampling head 1, which makes it easier to separate the bottom 44 of the bag from the connecting part 32.

[0061] Of course, in addition to the connecting part 32, the mating part 31 can also be provided with other fixing structures to improve the connection strength between the bag bottom 44 and the mating part 31. For example, a rubber ring can be fitted on the mating part 31 to fix the sampling bag 4.

[0062] See Figure 1 In some embodiments, the surface of the central sealing ring 43 is wavy.

[0063] The surface of the middle sealing ring 43 is wavy, which increases the friction between the feces 7 and the middle sealing ring 43, allowing the middle sealing ring 43 to scrape up the feces 7.

[0064] Furthermore, the surface of the central sealing ring 43 can also be serrated.

[0065] The following describes the process of using this device to sample feces, simulating feces with sweet potato starch:

[0066] See Figure 8 Water is added to the sweet potato starch to make it into a slurry. The second end 12 of the sampling head 1 is lowered so that it contacts the slurry. The drive rope 33 is pulled, causing the sampling bag 4 to move a certain distance into the traction channel 13, so that the middle sealing ring 43 can push the slurry into the sampling bag 4. See also Figure 9 Then, lift sampling head 1 and let it stand suspended in the air for a period of time. See also Figure 10 Then, pull the drive rope again so that the bottom 44 of the sampling bag 4 is in the first end 11, making it easy to disconnect the sampling bag 4 from the connecting part 32. For sampling results, please refer to [link / reference needed]. Figure 11 and Figure 12 ,from Figure 11 and Figure 12 It can be seen that the slurry is sealed inside the sampling bag 4 by the intermediate sealing ring 43, indicating that sampling can be successfully carried out by this device.

[0067] See Figure 13 , Figure 14 , Figure 15 and Figure 16 In some embodiments, a feeding assembly 5 is also included, which includes a receiving cavity 54 and a plurality of fixing components. The receiving cavity 54 has an opening at the top, and the plurality of fixing components are disposed on the inner wall of the receiving cavity 54 for fixing the sampling bag 4 and for expanding the sampling bag 4. The bag opening 45 of the sampling bag 4 faces the opening of the receiving cavity 54, and the plurality of fixing components are spaced apart along the axial direction of the opening of the receiving cavity 54.

[0068] For example, the receiving cavity 54 can be a rectangular cavity. There can be two fixing members, which are respectively disposed on two opposite inner walls of the receiving cavity 54.

[0069] The fixing parts can be connected to the opening 45 of the sampling bag 4. Multiple fixing parts work together to allow the opening 45 of the sampling bag 4 to be opened.

[0070] The opening at the top of the receiving cavity 54 allows the sampling head 1 to be inserted into the receiving cavity 54. At the same time, the opening 45 of the sampling bag 4 is opened so that the sampling head 1 can be inserted into the sampling bag 4.

[0071] Then, release the fixing parts from fixing the opening 45 of the sampling bag 4, at which point the sampling bag 4 can be placed on the sampling head 1.

[0072] Multiple fixing components are spaced apart, allowing multiple sampling bags 4 to be stacked, with each fixing component releasing only one sampling bag 4.

[0073] In some embodiments, the fixing member includes a first limiting portion 51 and a second limiting portion 52. The first limiting portion 51 is connected to the sidewall of the receiving cavity 54 and gradually bends towards the opening of the receiving cavity 54 from the side of the first limiting portion 51 near the sidewall of the receiving cavity 54 to the side away from the sidewall of the receiving cavity 54. The second limiting portion 52 is movably connected to the sidewall of the receiving cavity 54 along the thickness direction of the sidewall of the receiving cavity 54, and the second limiting portion 52 is disposed on the side of the first limiting portion 51 near the opening of the receiving cavity 54.

[0074] As the second limiting part 52 moves into the receiving cavity 54, it gradually approaches the end of the first limiting part 51. Since the first limiting part 51 is arc-shaped, the first limiting part 51 and the second limiting part 52 can form a receiving cavity structure, allowing the first limiting part 51 and the second limiting part 52 to cooperate with the opening 45 of the sampling bag 4.

[0075] In this embodiment of the application, when the end sealing ring 42 is in the space enclosed by the first limiting part 51 and the second limiting part 52, the end sealing ring 42 can be squeezed and deformed, so that the end sealing ring 42 can be used to assist in fixing the sampling bag 4.

[0076] When the second limiting part 52 moves toward exiting the receiving cavity 54, the second limiting part 52 moves away from the first limiting part 51, and the space enclosed by the first limiting part 51 and the second limiting part 52 is opened. Under the action of the elastic sleeve 41 of the bag opening 45, the sampling bag 4 can move toward the sampling head 1.

[0077] The arc-shaped structure of the first limiting part 51 allows the bag opening 45 of the sampling bag 4 to move towards the first end 11 firstly, so that even if multiple fixing parts are set at intervals, the sampling bag 4 fixed by each fixing part may be normally inserted into the positioning recess 14.

[0078] A spring may also be provided between the second limiting part 52 and the receiving cavity 54 for resetting the second limiting part 52.

[0079] In some embodiments, the receiving cavity 54 includes a bottom wall facing the opening of the receiving cavity 54, and the bottom wall is provided with a squeezing part 53 for pushing the sampling bag 4 closest to the sampling head 1 to contact the traction member 3.

[0080] When the sampling head 1 is placed into the receiving cavity 54, the second end 12 of the sampling head 1 faces the squeezing part 53. When the sampling head 1 abuts against the squeezing part 53, the squeezing part 53 can push the sampling bag 4 into the traction channel 13, so that the uppermost sampling bag 4 can be connected to the connecting part 32.

[0081] In some embodiments, an elastic element is provided between the compression portion 53 and the bottom wall.

[0082] The elastic element can be a spring, which serves as a buffer to reduce the risk of the sampling bag 4 breaking due to excessive force.

[0083] In some embodiments, the pressing portion 53 and the second limiting portion 52 are drive-connected.

[0084] The pressing part 53 and the second limiting part 52 can be driven together, allowing the pressing part 53 to drive the second limiting part 52 to move. The specific drive connection structure between the pressing part 53 and the second limiting part 52 can be selected from existing technologies. For example, a pulley system can be provided in the receiving cavity 54, and the pressing part 53 can be connected to the second limiting part 52 via a connecting rope. By adjusting the orientation of the connecting rope through the pulley system, when the pressing part 53 moves downward, it can pull the second limiting part 52 outward. When one fixed component is released, the connecting rope can be connected to the second limiting part 52 of another fixed component. The specific arrangement of each pulley in the pulley system can refer to existing structures.

[0085] See Figure 17 In some embodiments, a transport assembly 6 is also included, which includes a vehicle body 61 and a transport cavity 62. The transport cavity 62 is disposed on the vehicle body 61, and a plurality of partitions 63 are detachably disposed from top to bottom inside the transport cavity 62, with through holes 64 in each partition 63.

[0086] The vehicle body 61 is used to enable the transport cavity 62 to move.

[0087] The through hole 64 is used to insert the sampling bag 4. Force can be applied to the sampling bag 4 to deform it, so that the sampling bag 4 can be inserted into the through hole 64 and thus the sampling bag 4 can be fixed in the through hole 64.

[0088] The partition 63 is detachably connected to the transport cavity 62, so that multiple partitions 63 can be arranged vertically.

[0089] The advantage of using sampling bags 4 in this application is that, in order to reduce the risk of sampling bag 4 breaking, multiple partitions 63 can be set as close as possible, so that the lower partition 63 can support the upper sampling bag 4. Therefore, compared with conventional test tubes, the transport chamber 62 can transport more sampling bags 4, improving transport efficiency and thus improving sampling efficiency.

[0090] The above embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any modifications, alterations, alterations, or substitutions made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. An online sampling and conveying mechanism for heavy metals in piglet feces, characterized in that, include: The sampling head (1) includes a first end (11) and a second end (12) disposed opposite to each other. The sampling head (1) is provided with a traction channel (13) that passes through the first end (11) and the second end (12). A traction component (3) is movably disposed in the traction channel (13). The end face of the second end (12) is an arc surface. The arc surface is smoothly connected to the inner wall of the port of the traction channel (13) near the second end (12). Around the circumference of the sampling head (1), the peripheral wall of the sampling head (1) is provided with a positioning recess (14). The sampling bag (4) has an elastic sleeve (41) at its opening (45). The opening (45) is fitted into the positioning recess (14). Around the circumference of the opening (45), an end sealing ring (42) is provided on the side of the opening (45) away from the sampling head (1). From the opening (45) to the bottom (44) of the sampling bag (4), the sampling bag (4) is provided with multiple middle sealing rings (43) at intervals. The middle sealing rings (43) are arranged around the circumference of the sampling bag (4). The bottom (44) is connected to the traction component (3).

2. The online sampling and conveying mechanism for heavy metals in piglet feces according to claim 1, characterized in that, The first end (11) is provided with a hand-held part (2), the hand-held part (2) is provided with a drive rope (33), and the drive rope (33) is connected to the traction component (3).

3. The online sampling and conveying mechanism for heavy metals in piglet feces according to claim 1, characterized in that, The traction component (3) includes a mating part (31), which is slidably connected to the traction channel (13). A connecting part (32) is provided at the end of the mating part (31) near the second end (12).

4. The online sampling and conveying mechanism for heavy metals in piglet feces according to claim 1, characterized in that, The surface of the central sealing ring (43) is wavy.

5. The online sampling and conveying mechanism for heavy metals in piglet feces according to claim 1, characterized in that, It also includes a feeding assembly (5), which includes: The receiving cavity (54) has an opening at the top; Multiple fixing components are disposed on the inner wall of the receiving cavity (54) to fix the sampling bag (4) and to open the sampling bag (4). The bag opening (45) of the sampling bag (4) faces the opening of the receiving cavity (54). Multiple fixing components are spaced apart along the axial direction of the opening of the receiving cavity (54).

6. The online sampling and conveying mechanism for heavy metals in piglet feces according to claim 5, characterized in that, The fixing component includes: The first limiting part (51) is connected to the side wall of the receiving cavity (54). From the side of the first limiting part (51) close to the side wall of the receiving cavity (54) to the side away from the side wall of the receiving cavity (54), the first limiting part (51) is gradually bent towards the opening of the receiving cavity (54). The second limiting part (52) is movably connected to the side wall of the receiving cavity (54) along the thickness direction of the side wall of the receiving cavity (54), and the second limiting part (52) is disposed on the side of the first limiting part (51) near the opening of the receiving cavity (54).

7. The online sampling and conveying mechanism for heavy metals in piglet feces according to claim 5, characterized in that, The receiving cavity (54) includes a bottom wall facing the opening of the receiving cavity (54), and the bottom wall is provided with a squeezing part (53) for pushing the sampling bag (4) closest to the sampling head (1) to contact the traction member (3).

8. The online sampling and conveying mechanism for heavy metals in piglet feces according to claim 7, characterized in that, An elastic element is provided between the extrusion part (53) and the bottom wall.

9. The online sampling and conveying mechanism for heavy metals in piglet feces according to claim 8, characterized in that, The extrusion part (53) and the second limiting part (52) are connected by a transmission.

10. The online sampling and conveying mechanism for heavy metals in piglet feces according to claim 1, characterized in that, It also includes a transport component (6), which comprises: Vehicle body (61); A transport cavity (62) is provided in the vehicle body (61). Multiple partitions (63) are detachably provided in the transport cavity (62) from top to bottom. The partitions (63) are provided with through holes (64).

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