Excrement sampling and collecting device

Abstract

The invention discloses an excrement sampling and collecting device, belongs to the technical field of excrement sampling devices, and aims to solve the problems that a sample is easy to contact and react with air from sampling to transferring, the accuracy of a subsequent detection result is influenced, and a sampling part and a collecting part cannot be isolated from oxygen when multiple and massive sampling is carried out. The device comprises a collection tank and a mounting seat fixed to the middle of the upper portion of the collection tank, a mounting sleeve is mounted in the mounting seat, and a sampling mechanism is slidably arranged in the middle of the inner side of the mounting sleeve. According to the invention, the movable pinch-off mechanism is arranged on the sampling mechanism, so that the excessive adhesion part during extraction of the sampling mechanism can be moved and pinched off, the possibility of adhesion is avoided, when the sampling mechanism is subsequently transferred, the possibility of dripping and contact with air of a sample remained in an interlayer on the innermost side of the sampling mechanism is avoided, and anaerobic transfer can be realized, so that the accuracy during sample detection is ensured.

Description

Technical Field

[0001] This invention relates to the technical field of fecal sampling devices, specifically a fecal sampling and collection device. Background Technology

[0002] In some laboratories or large-scale breeding processes, the health of experimental subjects or farmed animals is usually tested. The test of feces can often reflect the health status of the experimental subjects' digestive system, microbial immune system, etc. At the same time, before testing the feces of experimental subjects, it is necessary to collect samples first.

[0003] Current fecal sampling and collection devices are prone to sample contact with air during collection and transfer, leading to anaerobic bacteria oxidation and inactivation, which affects the accuracy of subsequent test results. Furthermore, the outer wall of the sampling site easily adheres to large amounts of feces, increasing processing difficulties and discomfort, and also increasing the risk of contamination. Additionally, when conducting centralized sampling in laboratories or multiple large-scale sampling of feces from large farmed animals, repeated separation of the sampling and collection sites makes oxygen isolation impossible, hindering effective anaerobic sampling and collection, which also affects the accuracy of subsequent sample testing.

[0004] To address the above problems, a fecal sampling and collection device is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a fecal sampling and collection device. By using this device, the problems mentioned above can be solved, such as the sample easily coming into contact with air and reacting during the sampling and transfer process, which affects the accuracy of subsequent test results. At the same time, when multiple large-scale samplings are performed, oxygen cannot be isolated between the sampling site and the collection site, which also affects the accuracy of subsequent sample testing.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a fecal sampling and collection device, comprising a collection tank and a mounting base fixed at the upper center of the collection tank, wherein an inflation valve is installed on one side of the upper surface of the collection tank, and a pressure relief valve is provided on one side of the inflation valve; an mounting sleeve is installed inside the mounting base, and a lifting rod is fixed on the upper surface of the mounting sleeve; a sampling mechanism is slidably arranged in the middle of the inner side of the mounting sleeve, and an opening and closing mechanism is installed at the bottom of the sampling mechanism; an air outlet mechanism is connected to the bottom of the sampling mechanism; and a sealing mechanism is installed above the collection tank. The collection tank is fitted with a gas storage cover, and an inflation valve is installed on the upper side of one side of the gas storage cover. An inflation mechanism is connected to the upper side of the gas storage cover. An elastic rotating cover is provided on the inner side of the sampling mechanism, and a pressure relief valve is installed on the top of the sampling mechanism.

[0007] Furthermore, the sampling mechanism includes a sampling cylinder that is slidably disposed within the mounting sleeve, and two sliders are fixed on both sides of the sampling cylinder. An outer chamber is provided on the outermost side of the sampling cylinder, and a sampling cavity is provided in the middle of the inner side of the sampling cylinder. An inner chamber is provided between the sampling cavity and the outer chamber.

[0008] Furthermore, a rotating top cover is rotatably installed on the top of the sampling cylinder, a piston seat is slidably installed inside the lower part of the sampling chamber, and a pull rod is fixed in the upper center of the piston seat. A fitting wall is fixed at the bottom of the sampling chamber, and the fitting wall is arranged in a ring shape.

[0009] Furthermore, the opening and closing mechanism includes a fixed base plate fixed to the bottom of the sampling cylinder, and a rotating ring is rotatably arranged on the outer periphery of the upper surface of the fixed base plate, and the surface of the rotating ring is provided with several limiting grooves.

[0010] Furthermore, a number of rotating arms are rotatably mounted on the inner side of the rotating ring, and a rotating baffle is mounted at the front end of each set of rotating arms. A rotating shaft is rotatably mounted on one side of each set of rotating baffles. Two sets of fixing rods are fixed on the upper surface of the rotating ring, and the fixing rods extend into the outer cavity. The top of the fixing rods is fixed to the rotating top cover. A limit groove is formed on the bottom surface of the outer cavity.

[0011] Furthermore, the air outlet mechanism includes several air outlets mounted on the surface of the fixed base plate, and the top of the air outlet is connected to the inner cavity. A connecting end is fixed to the middle of one side of the air outlet, and a sealing plate is slidably installed on the middle of the inner side of the air outlet. A spring is fixed to the middle of one side of the sealing plate, and the sealing plate is elastically connected to the connecting end through the spring.

[0012] Furthermore, a push rod is fixed to the middle of the other side of the sealing plate, and the push rod is slidably sealed with the air outlet. A squeezing plate is fixed to one side of the surface of the rotating arm, and a waterproof and breathable membrane is fixedly installed inside the lower part of the air outlet.

[0013] Furthermore, the sealing mechanism includes a sliding baffle that is slidably installed above the inside of the collection tank, and a slider is fixed on the surface of the sliding baffle. A rotating rod is rotatably installed on the middle of one side of the sliding baffle, and a threaded section is provided on one end of the rotating rod.

[0014] Furthermore, the inflation mechanism includes an air guide pipe that communicates with the air storage hood, and an inflation head is connected to one of the upper sides of the air guide pipe, with a connecting pipe installed at the middle of the front end of the inflation head.

[0015] Furthermore, a second sealing plate is slidably installed on the inner center of the inflation head, and a pressing rod is fixed on the top of the second sealing plate. A second spring is fixed on the bottom of the second sealing plate, and the second sealing plate is elastically connected to the inflation head through the second spring.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention allows feces to be sealed and stored in the innermost interlayer of the sampling mechanism for anaerobic collection. At the same time, when the opening and closing mechanism slides and closes, it can move and clamp off the excess adhesive parts during sampling, avoiding the possibility of adhesion. When the sampling mechanism is transferred in the future, the sample stored in the innermost interlayer of the sampling mechanism will not drip or come into contact with air, thus achieving anaerobic transfer and ensuring the accuracy of sample testing.

[0017] 2. In this invention, nitrogen is used to prevent air from being drawn in by the suction force when aspirating samples. At the same time, nitrogen can fill the gaps between samples, reduce the generation of air bubbles, and ensure that there is no oxygen residue inside the sample during sampling, thereby maximizing anaerobic sampling and transfer.

[0018] 3. This invention can isolate the collection tank from the outside air during multiple collection connections, preventing air leakage and ensuring good anaerobic collection and processing. This meets the anaerobic processing requirements for batch collection and results in higher accuracy for subsequent sample testing. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall external three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the installation sleeve and sampling mechanism of the present invention. Figure 3 This is a cross-sectional three-dimensional structural diagram of the sampling cylinder of the present invention; Figure 4 This is a three-dimensional structural diagram of the opening and closing mechanism of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the fixed base plate of the present invention; Figure 6 This is a three-dimensional cross-sectional view of the internal structure of the air outlet head of the present invention during air discharge. Figure 7 This is a three-dimensional cross-sectional view of the internal structure of the collection tank of the present invention; Figure 8 This is a partial bottom-view three-dimensional structural diagram of the internal cross-section of the collection tank of the present invention; Figure 9 For the present invention Figure 8 Enlarged structural diagram at point A in the middle; Figure 10 This is a three-dimensional cross-sectional view of the internal structure of the inflation head of the present invention during inflation.

[0020] In the diagram: 1. Collection tank; 2. Mounting base; 3. Mounting sleeve; 4. Sampling mechanism; 41. Sampling cylinder; 42. Outer chamber; 43. Inner chamber; 44. Sampling cavity; 45. Rotating top cover; 46. Piston seat; 47. Pull rod; 48. Adhesive wall; 49. Sliding block II; 5. Opening and closing mechanism; 51. Fixed base plate; 52. Rotating ring; 53. Limiting groove I; 54. Rotating arm; 55. Rotating baffle; 56. Rotating shaft; 57. Fixed rod; 58. Limiting groove II; 6. Gas outlet mechanism; 61. Gas outlet head; 62. Connecting end; 63. Sealing plate one; 64. Spring one; 65. Push rod; 66. Extrusion plate; 67. Waterproof and breathable membrane; 7. Air storage cover; 8. Inflation mechanism; 81. Inflation head; 82. Air guide pipe; 83. Connecting pipe; 84. Sealing plate two; 85. Pressing rod; 86. Spring two; 9. Pressure relief valve one; 10. Inflation valve one; 20. Lifting rod; 30. Elastic rotating cover; 40. Inflation valve two; 50. Pressure relief valve two; 60. Sealing mechanism; 601. Sliding baffle; 602. Slider one; 603. Rotating rod; 604. Threaded section. Detailed Implementation

[0021] 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] To address the technical problems of samples easily reacting with air during sampling, and the tendency for samples to adhere to large amounts of feces after sampling, which are inconvenient to clean, cause discomfort, and increase the risk of contamination, such as... Figures 1-5 As shown, the following preferred technical solutions are provided: A fecal sampling and collection device includes a collection tank 1 and a mounting base 2 fixed to the upper center of the collection tank 1. Except for the materials specifically mentioned, the entire device is made of medical-grade stainless steel. An inflation valve 40 is installed on one side of the upper surface of the collection tank 1, and a pressure relief valve 50 is provided on one side of the inflation valve 40. Before sampling, the inflation valve 40 can be connected to an existing external inflation device to pre-inflate the collection tank 1 with inert nitrogen gas. The pressure relief valve 50 can be used to expel air from the collection tank 1 during inflation, thereby replacing the gas inside the collection tank 1 and creating an oxygen-free environment. An mounting sleeve 3 is installed inside the mounting base 2, and a lifting rod 20 is fixed to the upper surface of the mounting sleeve 3. The device is operated by lifting... The rod 20 allows for easy removal of the mounting sleeve 3. The mounting sleeve 3 and the mounting base 2 are connected by a threaded screw, and the installation point is sealed to prevent air leakage after installation. A sampling mechanism 4 is slidably installed in the middle of the inner side of the mounting sleeve 3. The mounting sleeve 3 and the sampling mechanism 4 are connected by a sliding seal to prevent leakage when the sampling mechanism 4 slides inside the mounting sleeve 3. The bottom of the sampling mechanism 4 is equipped with an opening and closing mechanism 5. Currently, when sampling feces, the sample is easily exposed to air during the transfer process, which can lead to the oxidation and inactivation of anaerobic bacteria, affecting the accuracy of subsequent test results. At the same time, a large amount of feces can easily adhere to the outer wall of the sampling site during sampling, which can increase discomfort and the risk of contamination.

[0023] In this device, during sampling, the mounting sleeve 3 and sampling mechanism 4 are first removed from the mounting base 2. After removing the mounting sleeve 3, the top of the collection tank 1 is in a closed and sealed state, preventing gas leakage. Then, the bottom of the mounting sleeve 3 is placed on the outside of the feces to be sampled. Next, the sampling mechanism 4 is pushed into the feces. After pushing it in, the sampling mechanism 4 is rotated, causing the opening and closing mechanism 5 to slide open, opening the bottom of the sampling mechanism 4. The sampling mechanism 4 has a sandwich structure. Then, the innermost suction structure of the sampling mechanism 4 is pulled out to extract the feces. After sampling is completed, the device is reversed... Rotating the sampling mechanism 4 causes the opening and closing mechanism 5 to slide and close the bottom of the sampling mechanism 4 again, sealing the feces in the innermost interlayer of the sampling mechanism 4, thus enabling anaerobic collection. At the same time, when the opening and closing mechanism 5 slides and closes, it can move and clamp off the excess adhesive parts of the sampling mechanism 4 during extraction, avoiding the possibility of adhering. When the sampling mechanism 4 is transferred in the future, the sample remaining in the innermost interlayer of the sampling mechanism 4 will not drip or come into contact with air, thus achieving anaerobic transfer and ensuring the accuracy of sample testing.

[0024] Then, the sampling mechanism 4 is pulled upward from the feces along the mounting sleeve 3, so that the bottom of the sampling mechanism 4 is flush with the bottom of the mounting sleeve 3. Due to the sliding seal between the mounting sleeve 3 and the sampling mechanism 4, when the sampling mechanism 4 is pulled back, the feces adhering to the outer wall surface of the sampling mechanism 4 can be automatically scraped off by the sliding part of the mounting sleeve 3. After the bottom of the sampling mechanism 4 is flush with the bottom of the mounting sleeve 3, it is only necessary to wipe the feces on the bottom surface of the mounting sleeve 3 and the sampling mechanism 4, so as to avoid a large amount of feces adhering to it, which would increase the trouble and discomfort of cleaning work, and also help to reduce the possibility of pollution.

[0025] The bottom of the sampling mechanism 4 is connected to an exhaust mechanism 6. The exhaust end of the exhaust mechanism 6 passes through the opening and closing mechanism 5 and is located at the bottom of the opening and closing mechanism 5. The middle interlayer of the sampling mechanism 4 is sealed and filled with inert nitrogen gas. When the opening and closing mechanism 5 is opened, it will trigger the exhaust mechanism 6 to open, so that the nitrogen gas in the middle interlayer of the sampling mechanism 4 is released through the exhaust mechanism 6. The nitrogen gas is released from the bottom of the opening and closing mechanism 5 into the feces to be sampled. The nitrogen gas repels the air around the sampling site. Thus, when the sample is aspirated, the nitrogen gas will prevent the air from being drawn in by the suction force. At the same time, the nitrogen gas can fill the sample gap, reduce the generation of air bubbles, and ensure that there is no oxygen residue inside the sample during sampling, thereby maximizing anaerobic sampling and transfer.

[0026] Currently, when connecting the sampling and collection points, the collection point needs to be opened before the sample can be stored and collected. This can easily lead to air leakage at the collection point, causing the sample to come into contact with oxygen during storage and collection, thus hindering effective anaerobic collection. Furthermore, when the device is used for centralized laboratory sampling or multiple large-scale sampling of feces from large farmed animals, the sampling and collection points are separated repeatedly, making oxygen isolation impossible and hindering effective anaerobic sampling and collection. This also affects the accuracy of subsequent sample testing. A sealing mechanism 60 is installed on top of the collection tank 1. After wiping the bottom surfaces of the mounting sleeve 3 and sampling mechanism 4 after sampling, the mounting sleeve 3 is sealed to the mounting base 2. Then, using the sealing mechanism 60, the opening at the top of the inside of the collection tank 1 is slid open, allowing the sample to be collected. The opening of the collection tank 1 is sealed by the mounting sleeve 3 and the sampling mechanism 4, preventing the inert gas pre-filled in the collection tank 1 from leaking. Then, the sampling mechanism 4 is pushed into the collection tank 1 along the mounting sleeve 3, and the opening and closing mechanism 5 is opened again. Subsequently, the innermost sample of the sampling mechanism 4 is pushed into the collection tank 1 to complete the collection. At the same time, when performing multiple samplings, simply lift the sampling mechanism 4 and slide the sealing mechanism 60 to seal it again, so that the opening of the collection tank 1 is sealed. Then, remove the mounting sleeve 3 and the sampling mechanism 4, and repeat the above sampling process. This ensures that the collection tank 1 is always isolated from the outside air during multiple collection connections, preventing gas leakage and achieving good anaerobic collection and treatment. This meets the anaerobic treatment requirements for batch collection by the device, resulting in higher accuracy in subsequent sample testing.

[0027] The collection tank 1 is fitted with a gas storage hood 7, and an inflation valve 10 is installed on the upper side of one side of the gas storage hood 7. The inflation valve 10 allows the gas storage hood 7 to be connected to existing external inflation equipment, enabling the pre-filling of inert nitrogen gas into the gas storage hood 7. The gas storage hood 7 is a high-pressure gas storage device, capable of being filled with nitrogen gas at a certain pressure. An inflation mechanism 8 is connected to the upper side of the gas storage hood 7. An elastic rotating cover 30 is installed on one side of the sampling mechanism 4, located in the middle interlayer of the sampling mechanism 4. The elastic rotating cover 30, rotated by a torsion spring, can be opened unidirectionally into the sampling mechanism 4, ensuring a seal during normal use and preventing leakage of inert gas from the sampling mechanism 4. A pressure relief valve 9 is installed on the top of the sampling mechanism 4. After one sampling, the inert nitrogen gas in the middle interlayer of the sampling mechanism 4 has been discharged, allowing for further sampling. When sampling again, the inflation mechanism 8 is inserted into the sampling mechanism 4. When the inflation mechanism 8 is inserted, it will push open the elastic rotating cover 30. Then, press the inflation mechanism 8 to open it, allowing the nitrogen gas stored in the gas storage hood 7 to be filled into the middle interlayer of the sampling mechanism 4 using the inflation mechanism 8. After the gas is filled into the middle interlayer at a certain pressure, the pressure relief valve 9 will release the pressure and exhaust the gas. At this time, the inflation mechanism 8 is closed and pulled out, and the elastic rotating cover 30 covers and seals the middle interlayer of the sampling mechanism 4. Thus, the gas filled into the middle interlayer of the sampling mechanism 4 at a certain pressure can be used to exhaust the gas again when sampling again. At the same time, the gas filled into the sampling mechanism 4 at a certain pressure allows the gas outlet mechanism 6 to exhaust the gas using air pressure, without causing a large impact on the feces, so as to ensure the effectiveness of fecal sampling.

[0028] The sampling mechanism 4 includes a sampling cylinder 41 slidably disposed within the mounting sleeve 3. The sampling cylinder 41 is a relatively large-diameter cylinder, with a diameter of approximately three to five centimeters, providing sufficient installation space and meeting the needs for centralized laboratory sampling or multiple large-scale sampling of feces from large-scale farmed animals. Sliding blocks 49 are fixed to both sides of the sampling cylinder 41. The sampling cylinder 41 and the sliding blocks 49 are slidably sealed with the mounting sleeve 3, preventing gas leakage during sliding. Additionally, the bottom of the sliding blocks 49 has a... The small protrusions on the outside can limit the upward sliding of the sampling cylinder 41, so that the bottom surface of the sampling cylinder 41 can be flush with the bottom surface of the mounting sleeve 3, and at the same time prevent the sampling cylinder 41 from sliding out of the mounting sleeve 3. The outermost side of the sampling cylinder 41 is provided with an outer chamber 42, and the middle of the inner side of the sampling cylinder 41 is provided with a sampling cavity 44. An inner chamber 43 is provided between the sampling cavity 44 and the outer chamber 42. The outer chamber 42, the inner chamber 43 and the sampling cavity 44 are separated by a sandwich, and the inner chamber 43 is filled with nitrogen gas at a certain pressure.

[0029] A rotating top cover 45 is rotatably mounted on the top of the sampling cylinder 41. The rotating top cover 45 is slidably sealed with the top of the interlayer between the outer chamber 42, the inner chamber 43, and the sampling chamber 44, so that nitrogen gas will not leak from the inner chamber 43 when the rotating top cover 45 rotates. A piston seat 46 is slidably mounted on the lower part of the inside of the sampling chamber 44, and a pull rod 47 is fixed on the upper middle part of the piston seat 46. The pull rod 47 is cylindrical and will not interfere with the radial rotation of the rotating top cover 45 on the sampling cylinder 41. A small gap is left between the pull rod 47 and the rotating top cover 45. When the piston seat 46 is pulled by the pull rod 47 to draw samples in the sampling chamber 44, the space above the sampling chamber 44 can be vented. A fitting wall 48 is fixed at the bottom of the sampling chamber 44. The fitting wall 48 is annular.

[0030] The opening and closing mechanism 5 includes a fixed base plate 51 fixed to the bottom of the sampling cylinder 41. A through hole is provided in the middle of the fixed base plate 51. The bottom surface of the fixed base plate 51 is flush with the bottom surface of the sampling cylinder 41. A rotating ring 52 is rotatably arranged on the outer periphery of the upper surface of the fixed base plate 51. A plurality of limiting grooves 53 are provided on the surface of the rotating ring 52. The limiting grooves 53 cooperate with the limiting blocks on the surface of the fixed base plate 51, so that the rotating ring 52 can rotate at the upper limit of the fixed base plate 51.

[0031] Several rotating arms 54 are rotatably mounted on the inner side of the rotating ring 52, and a rotating baffle 55 is mounted at the front end of each set of rotating arms 54. A rotating shaft 56 is rotatably mounted on one side of each set of rotating baffles 55. The rotating baffles 55 can rotate on the fixed base plate 51 using the rotating shaft 56. The fixed base plate 51 and the rotating shaft 56 constitute the iris structure of the prior art. A through hole communicating with the sampling cavity 44 is opened in the middle of the surface of the fixed base plate 51, and the size of the through hole is the same as the inner diameter of the sampling cavity 44. When the rotating ring 52 rotates along the limiting groove 53 on the fixed base plate 51, the rotating baffles 55 can be rotated, dispersed and gathered by the multiple sets of rotating arms 54 and rotating shaft 56, thereby opening and closing the through hole on the surface of the fixed base plate 51.

[0032] Two sets of fixing rods 57 are fixed on the upper surface of the rotating ring 52, and the fixing rods 57 extend into the outer cavity 42. The top of the fixing rods 57 is fixed to the rotating top cover 45. A second limiting groove 58 is opened on the bottom surface of the outer cavity 42. The length of the second limiting groove 58 corresponds to the length of the first limiting groove 53. When rotating the rotating top cover 45, the fixing rods 57 can drive the rotating ring 52 to rotate along the first limiting groove 53 on the fixed base plate 51, thereby enabling the rotating baffle 55 to rotate, disperse, and gather.

[0033] During sampling, the mounting sleeve 3 and sampling mechanism 4 are first removed from the mounting base 2. Then, the bottom surface of the mounting sleeve 3 is placed outside the feces to be sampled. Next, the sampling cylinder 41 and opening / closing mechanism 5 are pushed into the feces. Before pushing, the rotating baffle 55 is in a closed, converged state. After pushing it in, the top cover 45 is rotated, causing the rotating baffle 55 to slide open, opening the through hole on the surface of the fixed base plate 51. Then, the pull rod 47 and piston seat 46 are lifted, generating negative pressure from the bottom of the piston seat 46 onto the sampling chamber 44. This negative pressure is used to extract the feces sample into the sampling chamber 44. After sampling, the top cover 45 is reversed, causing the rotating baffle 55 to converge again and close the through hole, sealing the feces within the sampling chamber 44 for anaerobic collection. Simultaneously, when the rotating baffle 55 converges and closes, it can clamp and break any excess, adhered feces extracted from the bottom of the sampling chamber 44, preventing... The possibility of feces adhering during subsequent lifting ensures that the sample remaining in the innermost interlayer of the sampling mechanism 4 will not drip or come into contact with air during subsequent transfer, enabling anaerobic transfer and ensuring the accuracy of sample testing. Furthermore, the bottom surface of the rotating baffle 55 is tightly fitted to the surface of the fixed base plate 51, and the top surface of the rotating baffle 55 is tightly fitted to the bottom surface of the adhesive wall 48. When the rotating baffle 55 rotates and unfolds, the edges between each pair of rotating baffles 55 are flush, preventing gaps that could lead to fecal residue. Additionally, when the discharge collection is opened, the rotating baffle 55 rotates and retracts into the fixed base plate 51 along with the adhesive wall 48, automatically scraping off feces from its upper surface, greatly reducing the possibility of fecal residue and facilitating subsequent overall cleaning and disinfection.

[0034] After sampling, the sampling cylinder 41 is pulled upward from the feces along the mounting sleeve 3, so that the bottom of the sampling cylinder 41 and the bottom of the fixed base plate 51 are flush with the bottom of the mounting sleeve 3. Due to the sliding seal between the mounting sleeve 3 and the sampling cylinder 41, when the sampling cylinder 41 is pulled back, the feces adhering to the outer wall surface of the sampling cylinder 41 can be automatically scraped off by sliding the bottom edge of the mounting sleeve 3. When the bottom of the sampling cylinder 41 is flush with the bottom of the mounting sleeve 3, it is only necessary to wipe the feces on the bottom surface of the mounting sleeve 3 and the sampling mechanism 4, which avoids the adhesion of a large amount of feces, which would increase the trouble and discomfort of cleaning work, and also helps to reduce the risk of pollution.

[0035] To address the technical problem of air intake during sampling, which hinders effective anaerobic treatment, such as... Figures 1-6 as well as Figure 10 As shown, the following preferred technical solutions are provided: The air outlet mechanism 6 includes several air outlets 61 mounted on the surface of the fixed base plate 51. The top of the air outlet 61 is connected to the inner cavity 43. The bottom of the air outlet 61 extends through the fixed base plate 51 and is flush with the bottom surface of the fixed base plate 51. A connecting end 62 is fixed to the middle of one side of the air outlet 61. A sealing plate 63 is slidably installed on the middle of the inner side of the air outlet 61. A spring 64 is fixed to the middle of one side of the sealing plate 63. The sealing plate 63 is elastically connected to the connecting end 62 through the spring 64.

[0036] A push rod 65 is fixed to the middle of the other side of the sealing plate 63, and the push rod 65 is slidably sealed with the air outlet 61. The front end of the push rod 65 extends to the outside of the push rod 65. A squeezing plate 66 is fixed to one side of the surface of the rotating arm 54. A waterproof and breathable membrane 67 is fixedly installed inside the lower part of the air outlet 61. The waterproof and breathable membrane 67 allows airflow to pass through but prevents moisture and fecal particles from passing through. When the rotating baffle 55 is in the closed state, the sealing plate 63 seals the inside of the air outlet 61, while the spring 64 is in the extended state. Before sampling, when the rotating baffle 55 is rotated and opened by the rotating arm 54, the rotating arm... 54 drives the squeezing plate 66 to rotate, which eventually squeezes the push rod 65, causing the push rod 65 to push the sealing plate 63 into the connecting end 62 and compress the spring 64, so that the air outlet 61 can open. At this time, the nitrogen in the middle interlayer of the inner chamber 43 is released through the air outlet 61, allowing the nitrogen to be released from the bottom of the fixed base plate 51 into the feces to be sampled. This causes the nitrogen to repel the air around the sampling site, so that when the sample is aspirated, the nitrogen will prevent the air from being drawn in with the suction force. At the same time, the nitrogen can fill the sample gap, reduce the generation of air bubbles, and ensure that there is no oxygen residue inside the sample when sampling, thereby maximizing anaerobic sampling and transfer.

[0037] The inflation mechanism 8 includes an air guide pipe 82 connected to the air storage cover 7. The air guide pipe 82 is a plastic hose of a certain length, and an inflation head 81 is connected to one side of the upper part of the air guide pipe 82. A connecting pipe 83 is installed and connected to the middle of the front end of the inflation head 81. The connecting pipe 83 is a rigid pipe, and a disc is fixed on one side of the surface of the connecting pipe 83, which can seal the connection when the air is inflated and fitted.

[0038] A sealing plate 84 is slidably installed on the inner middle of the inflation head 81, and a pressing rod 85 is fixed to the top of the sealing plate 84. The pressing rod 85 extends out of the inflation head 81, and the pressing rod 85 and the inflation head 81 are slidably sealed. A spring 86 is fixed to the bottom of the sealing plate 84, and the sealing plate 84 is elastically connected to the inflation head 81 through the spring 86. When not inflated, the sealing plate 84 will block the passage inside the inflation head 81. Insertion holes are opened on the surface of the sampling cylinder 41 and the outer wall surface of the inner chamber 43. Before secondary sampling, the gas guide tube 82 is inserted into the inner chamber 43. When the gas guide tube 82 is inserted, it will push open the elastic rotating cover 30. Then, the pressing rod 85 is pressed, which causes the sealing plate 84 to compress the spring 86 and move down, opening the passage of the inflation head 81. At this time, a certain pressure of nitrogen gas stored in the gas storage hood 7 is used for... Using the gas guide tube 82, the inflation head 81, and the connecting tube 83, gas can be injected into the inner chamber 43. At the same time, the volume of the gas storage hood 7 is much larger than the volume of the inner chamber 43. After the inner chamber 43 is filled with gas at a certain pressure, the pressure relief valve 9 will release the pressure and exhaust the gas. At this time, the pressing rod 85 is released, and the sealing plate 84 rebounds through the spring 86 to reseal the inside of the inflation head 81. Then, the connecting tube 83 is pulled out, and the elastic rotating cover 30 closes and seals the inner chamber 43. Thus, the gas at a certain pressure in the inner chamber 43 can be used to exhaust the gas again when sampling again, so that the gas outlet 61 can be vented again. At the same time, the gas filled into the sampling mechanism 4 is at a certain pressure, so that when the gas outlet 61 exhausts the gas, the gas pressure can just be used to expel the nitrogen gas without causing a large impact on the feces, so as to ensure the effect of repelling air from the sampled feces.

[0039] To address the technical issue of oxygen insufficiency between the sampling and collection sites during multiple large-scale sampling, which can affect the accuracy of subsequent sample testing, such as... Figures 1-4 as well as Figures 7-9 As shown, the following preferred technical solutions are provided: The sealing mechanism 60 includes a sliding baffle 601 slidably installed inside the upper part of the collection tank 1. The upper surface of the sliding baffle 601 is in close contact with the inner surface of the collection tank 1. A slider 602 is fixed on the surface of the sliding baffle 601. The slider 602 has a T-shaped structure and can slide along the groove opened at the top of the collection tank 1. A rotating rod 603 is rotatably installed on the middle of one side of the sliding baffle 601. The rotating rod 603 passes through the collection tank 1 and slides to seal with the collection tank 1 to prevent gas leakage. A threaded section 604 is provided on one end surface of the rotating rod 603. The rotating rod 603 can be screwed into the collection tank 1 using the threaded section 604. Two sets of sliding baffles 601, slider 602, rotating rod 603 and threaded section 604 are symmetrically arranged about the collection tank 1. When the rotating rod 603 is installed with the collection tank 1, the front ends of the two sets of sliding baffles 601 are in contact.

[0040] After sampling, wipe the bottom surfaces of the mounting sleeve 3, sampling cylinder 41, and fixed base plate 51. Then, seal the mounting sleeve 3 and mounting base 2. Next, unscrew the threaded sections 604 on both sides to separate them from the collection tank 1. Then, use the rotating rods 603 on both sides to pull the sliding baffle 601 outwards from the collection tank 1, causing the upper opening inside the collection tank 1 to slide open. At this time, the opening of the collection tank 1 will be blocked by the mounting sleeve 3 and sampling cylinder 41, preventing the inert gas pre-filled in the collection tank 1 from leaking out. Then, push the sampling cylinder 41 into the collection tank 1 along the mounting sleeve 3. Rotate the rotating baffle 55 again to open it. Then, push the sample in the sampling chamber 44 out using the pull rod 47 and piston seat 46. The sampling process is completed in the collection tank 1. During secondary sampling, the piston seat 46 can be pulled back, the rotating baffle 55 can be reversed and closed, and the sampling cylinder 41 can be lifted up. Then, the two sets of sliding baffles 601 can be re-sealed, so that the rotating rod 603 is fixed to the collection tank 1 by the threaded section 604, thus re-sealing the opening of the collection tank 1. Then, the mounting sleeve 3 and the sampling mechanism 4 can be removed. Finally, the above sampling process can be repeated. This ensures that the collection tank 1 is always isolated from the outside air during multiple collection connections, preventing air leakage and achieving good anaerobic collection and treatment. This meets the anaerobic treatment requirements for batch collection by the device, resulting in higher accuracy in subsequent sample testing.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fecal sampling and collection device, comprising a collection tank (1) and a mounting base (2) fixed at the upper center of the collection tank (1), wherein an inflation valve (40) is installed on one side of the upper surface of the collection tank (1), and a pressure relief valve (50) is provided on one side of the inflation valve (40), characterized in that: The mounting base (2) is equipped with a mounting sleeve (3), and a lifting rod (20) is fixed on the upper surface of the mounting sleeve (3). A sampling mechanism (4) is slidably arranged in the middle of the inner side of the mounting sleeve (3), and an opening and closing mechanism (5) is installed at the bottom of the sampling mechanism (4). An air outlet mechanism (6) is connected to the bottom of the sampling mechanism (4), and a sealing mechanism (60) is installed above the collection tank (1). The collection tank (1) is covered with a gas storage cover (7), and an inflation valve (10) is installed on the upper side of one side of the gas storage cover (7). An inflation mechanism (8) is connected to the upper side of the gas storage cover (7). An elastic rotating cover (30) is provided on the inner side of the sampling mechanism (4), and a pressure relief valve (9) is installed on the top of the sampling mechanism (4).

2. The fecal sampling and collection device according to claim 1, characterized in that: The sampling mechanism (4) includes a sampling cylinder (41) that is slidably disposed in the mounting sleeve (3), and two sliders (49) are fixed on both sides of the sampling cylinder (41). An outer chamber (42) is provided on the outermost side of the sampling cylinder (41), and a sampling cavity (44) is provided in the middle of the inner side of the sampling cylinder (41). An inner chamber (43) is provided between the sampling cavity (44) and the outer chamber (42).

3. The fecal sampling and collection device according to claim 2, characterized in that: A rotating top cover (45) is rotatably installed on the top of the sampling tube (41), a piston seat (46) is slidably installed inside the sampling cavity (44) at the bottom, and a pull rod (47) is fixed in the upper middle part of the piston seat (46). A fitting wall (48) is fixed at the bottom of the sampling cavity (44), and the fitting wall (48) is arranged in a ring.

4. The fecal sampling and collection device according to claim 3, characterized in that: The opening and closing mechanism (5) includes a fixed base plate (51) fixed to the bottom of the sampling tube (41). A rotating ring (52) is rotatably arranged on the outer periphery of the upper surface of the fixed base plate (51), and a plurality of limiting grooves (53) are opened on the surface of the rotating ring (52).

5. A fecal sampling and collection device according to claim 4, characterized in that: The inner side of the rotating ring (52) is rotatably equipped with several rotating arms (54), and each set of rotating arms (54) is equipped with a rotating baffle (55) at the front end, and a rotating shaft (56) is rotatably installed on one side of each set of rotating baffles (55). Two sets of fixing rods (57) are fixed on the upper surface of the rotating ring (52), and the fixing rods (57) extend into the outer cavity (42), and the top of the fixing rods (57) is fixed to the rotating top cover (45). The bottom surface of the outer cavity (42) is provided with a limiting groove (58).

6. A fecal sampling and collection device according to claim 5, characterized in that: The air outlet mechanism (6) includes several air outlets (61) installed on the surface of the fixed base plate (51), and the top of the air outlet (61) is connected to the inner cavity (43). A connecting end (62) is fixed in the middle of one side of the air outlet (61), and a sealing plate (63) is slidably installed in the middle of the inner side of the air outlet (61). A spring (64) is fixed in the middle of one side of the sealing plate (63), and the sealing plate (63) is elastically connected to the connecting end (62) through the spring (64).

7. A fecal sampling and collection device according to claim 6, characterized in that: A push rod (65) is fixed in the middle of the other side of the sealing plate (63), and the push rod (65) and the air outlet (61) are slidably sealed. A squeezing plate (66) is fixed on one side of the surface of the rotating arm (54), and a waterproof and breathable membrane (67) is fixedly installed inside the lower part of the air outlet (61).

8. A fecal sampling and collection device according to claim 1, characterized in that: The sealing mechanism (60) includes a sliding baffle (601) that is slidably installed above the inside of the collection tank (1), and a slider (602) is fixed on the surface of the sliding baffle (601). A rotating rod (603) is rotatably installed on the middle of one side of the sliding baffle (601), and a threaded section (604) is provided on one end surface of the rotating rod (603).

9. A fecal sampling and collection device according to claim 1, characterized in that: The inflation mechanism (8) includes an air guide pipe (82) connected to the air storage hood (7), and an inflation head (81) is connected to one side above the air guide pipe (82). A connecting pipe (83) is installed at the middle of the front end of the inflation head (81).

10. A fecal sampling and collection device according to claim 9, characterized in that: A sealing plate 2 (84) is slidably installed on the inner middle of the inflation head (81), and a pressing rod (85) is fixed on the top of the sealing plate 2 (84). A spring 2 (86) is fixed on the bottom of the sealing plate 2 (84), and the sealing plate 2 (84) is elastically connected to the inflation head (81) through the spring 2 (86).

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