A multi-point sampling, mixing and dispensing device for dairy manure solids

Abstract

This invention relates to the field of dairy cow manure solids sampling technology, and more particularly to a multi-point sampling, mixing, and dispensing device for dairy cow manure solids. The multi-point sampling, mixing, and dispensing device for dairy cow manure solids includes a spiral sampling and conveying unit, a sample mixing and storage unit, and a sample collection and packaging unit. The spiral sampling and conveying unit is used for multi-point sampling of dairy cow manure solids. By integrating the sampling, mixing, and dispensing processes into the same device, the continuous and consistent acquisition process of complex dairy cow manure solids samples is achieved, improving work efficiency. The samples collected by the spiral sampling and conveying unit undergo preliminary mixing after entering the sample mixing and storage unit, and then the samples collected by the spiral sampling and conveying unit are mixed again through the sample mixing and storage unit, achieving secondary mixing of the samples. This ensures that samples from different sampling points are fully homogenized before entering the dispensing stage, effectively reducing the impact of heterogeneity on the detection results.

Description

Technical Field

[0001] This invention relates to the field of dairy cow manure solids sampling technology, and more particularly to a multi-point sampling, mixing and dispensing device for dairy cow manure solids. Background Technology

[0002] The statements herein are provided only as background information in connection with this application and do not necessarily constitute prior art.

[0003] With the rapid development of large-scale dairy farming, dairy cow manure and its resource utilization process have become important storage media and migration channels for various pollutants such as antibiotics, microplastics, and heavy metals. The main pathways for manure resource utilization include the recycling of recycled bedding materials within the farming system, engineered anaerobic digestion, and aerobic composting for returning to the fields. During long-term farming, dairy cow manure solids are simultaneously affected by physical disturbances caused by cow trampling and management operations such as feeding and turning, leading to continuous restructuring of its physical structure. The spatial and temporal distribution patterns of pollutants evolve accordingly, gradually forming significant heterogeneity, making it an important environmental carrier for the long-term storage, interaction, migration, and transformation of complex pollutants such as antibiotics, microplastics, and heavy metals.

[0004] Under the aforementioned conditions, complex pollutants can persist and migrate within dairy cow manure solids over extended periods. These pollutants may then enter other environmental media, such as soil and water, during various resource utilization processes, including composting and bedding reuse. This multi-media migration and diffusion poses potential risks to the environmental safety of manure resource utilization and adversely affects ecosystems and human health. Therefore, accurately identifying complex pollutants in dairy cow manure solids is crucial for subsequent research on pollution characteristics and migration / transformation mechanisms.

[0005] In existing technologies, sampling methods for pollutants in dairy cow manure solids largely follow those used for soil or general solid waste, typically employing manual shoveling or simple samplers. These methods are primarily suitable for environmental media with relatively stable structures and minimal changes in environmental conditions. However, during actual farming and resource utilization, the physical structure and volume state of dairy cow manure solids continuously change. Over time, the internal pore structure of dairy cow manure solids compacts or restructures, leading to significant differences in pollutant content between different sampling locations. Under these conditions, traditional sampling methods struggle to ensure consistent sampling volume, and single-point or limited-spot sampling fails to accurately reflect the overall distribution characteristics of complex pollutants in dairy cow manure solids. Furthermore, existing sample collection methods typically involve centralized sample separation and sealing in the laboratory after sampling. However, pollutants such as antibiotics, microplastics, and heavy metals differ significantly in terms of analytical targets and preservation conditions. Conventional processing methods make samples susceptible to exposure or cross-contamination during collection, transportation, and separation, which can even lead to changes in the form or content of pollutants. This makes it difficult to maintain the in-situ presence of pollutants in dairy cow manure solids, thereby affecting the accuracy and reliability of data on the migration and evolution of complex pollutants. Summary of the Invention

[0006] This invention aims to at least solve one of the technical problems existing in related technologies. To this end, this invention proposes a multi-point sampling, mixing, and dispensing device for dairy cow manure solids to address the problems of poor sampling accuracy and low reliability in existing sampling methods.

[0007] A multi-point sampling, mixing, and dispensing device for solids of cow manure according to an embodiment of the present invention includes: A spiral sampling and conveying unit is used for multi-point sampling of solids in dairy cow manure; A sample mixing and storage unit is connected to the spiral sampling and conveying unit, and the sample mixing and storage unit is used to mix the sample collected by the spiral sampling and conveying unit. A sample collection and packaging unit is connected to the sample mixing and storage unit. The sample collection and packaging unit is used to package the sample after it has been mixed by the sample mixing and storage unit into a sealed bag.

[0008] According to one embodiment of the present invention, the sample mixing and storage unit includes: The outer cylinder has an opening at its bottom; An inner cylinder is rotatably fitted inside the outer cylinder, and the interior of the inner cylinder is connected to the spiral sampling and conveying unit. An opening is provided at the bottom of the inner cylinder. A stirring assembly is disposed inside the inner cylinder and connected to the inner wall of the inner cylinder; the stirring assembly is used to mix the sample entering the inner cylinder. A rotating roller base plate is provided at the opening of the outer cylinder, the inner cylinder is rotatably engaged with the rotating roller base plate, the rotating roller base plate is provided with a discharge port, and the sample collection and packaging unit is connected to the rotating roller base plate; A discharge port control component is connected to the rotating roller base plate and the outer cylinder, and is used to control the opening and closing of the discharge port.

[0009] According to one embodiment of the present invention, the center of the rotating roller bottom plate is provided with a first central hole, and there are multiple discharge ports, which are spaced apart around the outer periphery of the first central hole.

[0010] According to one embodiment of the present invention, the upper part of the rotating roller bottom plate is provided with a first inclined surface extending in the circumferential direction, the first inclined surface being inclined downward toward the first central hole.

[0011] According to one embodiment of the present invention, the stirring assembly includes: A support rod is connected to the inner wall of the inner cylinder, and a blade fixing plate is provided on the support rod; A stirring blade is detachably connected to a blade fixing plate, and the stirring blade is used to mix the sample collected by the spiral sampling and conveying unit.

[0012] According to one embodiment of the present invention, the stirring assembly further includes: A rubber scraper is connected to the lower end of the support rod. The bottom of the rubber scraper is provided with a second inclined surface, and the first inclined surface and the second inclined surface are parallel to each other.

[0013] According to one embodiment of the present invention, the discharge port control component includes: A large gear is rotatably disposed below the bottom plate of the rotating roller. The large gear is provided with a second central hole and a plurality of strip-shaped through holes. The second central hole is located at the center of the large gear, and the plurality of strip-shaped through holes are arranged at intervals on the outer periphery of the second central hole. The central axis of the first central hole coincides with the central axis of the second central hole. A drive mechanism is connected to the outer cylinder, and a small gear is sleeved on the rotating shaft of the drive mechanism, which meshes with the large gear.

[0014] According to one embodiment of the present invention, the spiral sampling and conveying unit includes: A spiral conveyor housing, the upper end of which passes through the second central hole and the first central hole in sequence and extends into the interior of the inner cylinder, the upper end of which has a material outlet, and the lower end of which passes through the sample collection and packaging unit and is fixedly connected to the sample collection and packaging unit. A conveyor shaft, which passes through the interior of the spiral conveyor housing; Helical conveying blades, the helical conveying blades being arranged around the outer circumferential surface of the conveying shaft and extending helically; A first drive motor is disposed at the top of the outer cylinder, and the shaft of the first drive motor is connected to the upper end of the conveying shaft. An inner spiral turntable is fitted around the lower end of the spiral conveying blade and connected to the lower end of the spiral conveying blade via a connecting block.

[0015] According to one embodiment of the present invention, the sample collection and packaging unit includes: A sample dispensing chamber, wherein the top of the sample dispensing chamber is provided with an opening; A sealing cover is provided at the opening of the sample dispensing chamber and below the large gear. The sealing cover is connected to the bottom plate of the rotating roller. The sealing cover has multiple material inlets, and the positions of the material inlets correspond one-to-one with the positions of the discharge ports. Each material inlet has two opposite long sidewalls with sample bag opening frames, which are used to open the sealed bags. An automatic vacuum sealing machine is located below the material inlet and connected to the sealing cover. The automatic vacuum sealing machine is used to vacuum and seal the sealed bag.

[0016] According to one embodiment of the present invention, each of the material inlets is provided with a vacuum suction cup on two opposite long sidewalls, the vacuum suction cup being used to adsorb the sealed bag.

[0017] The above-described one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects: The multi-point sampling, mixing and dispensing device for dairy cow manure solids provided by this invention integrates the sampling, mixing and dispensing processes into the same device, thereby achieving continuity and consistency in the acquisition process of complex dairy cow manure solids samples and improving work efficiency.

[0018] The samples collected by the spiral sampling and delivery unit are initially mixed after entering the sample mixing and storage unit. Then, the samples collected by the spiral sampling and delivery unit are mixed again through the sample mixing and storage unit, realizing secondary mixing of the samples. This ensures that the samples from different sampling points are fully homogenized before entering the sample separation stage, effectively reducing the impact of heterogeneity on the detection results.

[0019] The sample collection and packaging unit encapsulates the samples after they have been mixed in the sample mixing and storage unit into sealed bags, enabling in-situ sample separation and classified sealing during the collection stage. This avoids the problems of sample exposure, cross-contamination, and property changes in the traditional "unified sealing and post-collection sample separation" model, and provides technical support for collaborative research on multiple pollutants.

[0020] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention and are not considered as limitations on this application. Moreover, those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional structural schematic diagram of the multi-point sampling, mixing and dispensing device for solid dairy cow manure provided by the present invention.

[0023] Figure 2 This is a side view cross-sectional structural diagram of the multi-point sampling, mixing and dispensing device for solid dairy cow manure provided by the present invention.

[0024] Figure 3 This is a top view of the rotating roller base plate provided by the present invention.

[0025] Figure 4 This is a side view cross-sectional structural diagram of the rotating roller base plate provided by the present invention.

[0026] Figure 5 This is a top view of the sample collection and packaging unit provided by the present invention.

[0027] Figure 6 This is a side view cross-sectional structural diagram of the sample collection and packaging unit provided by the present invention.

[0028] Figure label: 1. First drive motor; 2. Conveyor shaft; 3. Outer cylinder; 4. Inner cylinder; 5. Support rod; 6. Spiral conveyor blades; 7. Spiral conveyor housing; 8. Blade fixing plate; 9. Stirring blades; 10. Rubber scraper; 11. Hinge; 12. Collection observation window; 13. Sealing bag; 14. Collection chamber outlet; 15. Inner spiral turntable; 16. Sample dispensing chamber; 17. Sealing cover plate; 18. Large gear; 19. Rotating roller bottom plate; 20. Small gear; 21. Servo motor mounting plate; 22. Second drive motor; 23. Material outlet; 24. Hand handle; 25. Bearing seat cover plate; 26. Bearing seat; 27. Discharge port; 28. Sample bag opening frame; 29. ​​Vacuum suction cup; 30. Automatic vacuum sealing bag machine; 201. Spiral sampling and conveying unit; 202. Sample mixing and storage unit; 203. Sample collection and sealing unit. Detailed Implementation

[0029] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0030] The specific terms used in this specification are for illustrative purposes only and are not intended to limit the illustrated embodiments. For example, expressions such as "same" and "identical" not only indicate a strictly identical state, but also indicate a state with tolerances or differences in the degree of functionality. For example, expressions indicating relative or absolute arrangement such as "in a certain direction," "along a certain direction," "side by side," "perpendicular," "centered on," "concentric," or "coaxial" not only strictly indicate such an arrangement, but also indicate a state of relative displacement by tolerances or angles or distances with the same degree of functionality.

[0031] The terms “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and simplifying the description, 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 limiting the present invention.

[0032] Furthermore, features specified as "first" or "second" may explicitly or implicitly include one or more of those features. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0033] In the description of this invention, 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 a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] The following is combined with Figures 1 to 6 The specific structure and working principle of the multi-point sampling, mixing and dispensing device for dairy cow manure solids of the present invention are described.

[0035] like Figure 1 and Figure 2 As shown, the multi-point sampling, mixing, and dispensing device for dairy cow manure solids includes a spiral sampling and conveying unit 201, a sample mixing and storage unit 202, and a sample collection and packaging unit 203. The spiral sampling and conveying unit 201 is used for multi-point sampling of dairy cow manure solids. The sample mixing and storage unit 202 is connected to the spiral sampling and conveying unit 201 and is used to mix the samples collected by the spiral sampling and conveying unit 201. The sample collection and packaging unit 203 is connected to the sample mixing and storage unit 202 and is used to package the mixed samples in the sample mixing and storage unit 202 into a sealed bag 13.

[0036] The multi-point sampling, mixing, and dispensing device for dairy cow manure solids provided by this invention integrates a spiral sampling and conveying unit 201 for multi-point sampling, a sample mixing and storage unit 202 for mixing samples, and a sample collection and packaging unit 203 for packaging samples into the same device. This achieves continuous operation and consistency throughout the entire process from obtaining dairy cow manure solids to dispensing and sealing them, avoiding the inconvenience and potential contamination caused by sample transfer in traditional step-by-step operations, and improving work efficiency.

[0037] The samples collected by the spiral sampling and conveying unit 201 are initially mixed after entering the sample mixing and storage unit 202. Subsequently, the samples enter the inner cylinder 4 of the sample mixing and storage unit 202. The inner cylinder 4 can rotate inside the outer cylinder 3, and the stirring component inside it will perform secondary and thorough stirring and mixing of the samples. This ensures that samples from different sampling points are fully homogenized before entering the sample separation stage, thereby effectively reducing the impact of heterogeneity on the detection results.

[0038] After the samples are mixed, the sample collection and packaging unit 203 encapsulates the mixed samples from the sample mixing and storage unit 202 into a sealed bag 13, realizing in-situ sample separation and classified sealing at the collection site. Compared with the traditional "unified sealing and post-collection sample separation" mode, this method avoids problems such as long-term exposure, cross-contamination, and changes in properties due to environmental changes during the transportation and subsequent processing of samples, providing technical support for the collaborative research of multiple pollutants.

[0039] In one embodiment of the present invention, such as Figure 1 and Figure 2 As shown, the sample mixing and storage unit 202 includes an outer cylinder 3, an inner cylinder 4, a stirring assembly, a rotating roller base plate 19, and a discharge port control assembly. The bottom of the outer cylinder 3 is provided with an opening. The outer cylinder 3 is in a vertical state during use and provides support and protection for the inner cylinder 4 and other working components.

[0040] Preferably, a hand handle 24 is provided on the top of the outer cylinder 3, which makes it easier for the operator to hold and move the entire device, improving the operability and portability of the equipment at the sampling site.

[0041] The inner cylinder 4 is rotatably fitted inside the outer cylinder 3 and is coaxially arranged with the outer cylinder 3. The interior of the inner cylinder 4 is connected to the spiral sampling and conveying unit 201, that is, to the material outlet 23 at the upper end of the spiral conveying housing 7. The inner cylinder 4 is used to receive the sample after preliminary mixing, and its bottom is provided with an opening. The stirring assembly is fixedly installed inside the inner cylinder 4 and connected to the inner wall of the inner cylinder 4. When the inner cylinder 4 rotates relative to the outer cylinder 3, the stirring assembly fixed to it will rotate synchronously, thereby forcibly stirring and mixing the sample in the inner cylinder 4, ensuring that the samples from different sampling points can be further homogenized, and ensuring the accuracy of subsequent sampling operations.

[0042] A rotating roller base plate 19 is fixedly disposed at the opening at the bottom of the outer cylinder 3 to seal the opening of the outer cylinder 3. The lower end of the inner cylinder 4 is rotatably engaged with the upper surface of the rotating roller base plate 19, allowing the inner cylinder 4 to rotate smoothly above the rotating roller base plate 19. A discharge port 27 is provided on the rotating roller base plate 19, and a sample collection and packaging unit 203 is disposed below the rotating roller base plate 19 and connected to the rotating roller base plate 19.

[0043] Preferably, to achieve stable rotational engagement, a circular guide groove is provided on the upper edge of the rotating roller base plate 19, and the edge of the lower end of the inner cylinder 4 is engaged in the circular guide groove and slides in cooperation with it. The circular guide groove not only guides the rotation of the inner cylinder 4 and reduces swaying, but also seals the gap between the inner cylinder 4 and the rotating roller base plate 19, preventing leakage of the sample during the mixing process.

[0044] The discharge port control component is connected to the rotating roller base plate 19 and the outer cylinder 3. The discharge port control component is used to control the opening and closing of the discharge port 27. When the discharge port control component controls the discharge port 27 to open, the sample moves downward through the discharge port 27.

[0045] In one embodiment of the present invention, such as Figures 2 to 4 As shown, a first central hole is provided at the center of the rotating roller base plate 19, which provides a through channel for the screw conveyor housing 7. During operation, the inner cylinder 4 can rotate above the rotating roller base plate 19, while the rotating roller base plate 19 remains relatively fixed. Multiple discharge ports 27 are spaced apart around the first central hole, extending radially along the rotating roller base plate 19. This radial arrangement of multiple discharge ports 27 around the center allows the mixed sample to be distributed to multiple preset positions below, improving the efficiency of sample dispensing. In this embodiment, four discharge ports 27 are provided, arranged at equal intervals. This arrangement ensures that the sample can uniformly enter each material inlet below during dispensing, guaranteeing consistency in the dispensing process. Of course, the number and specific distribution of the discharge ports 27 are not limited to this and can be adjusted according to actual needs.

[0046] To ensure smooth sample discharge, the cross-sectional area of ​​the discharge port 27 is designed to gradually decrease from top to bottom, meaning the diameter of the upper port of the discharge port 27 is larger than the diameter of the lower port, forming a conical channel. This top-wide and bottom-narrow structural design effectively reduces the risk of bridging or blockage of samples such as dairy cow manure solids during discharge, ensuring the smoothness and reliability of material discharge.

[0047] In one embodiment of the present invention, such as Figures 2 to 4 As shown, the upper part of the rotating roller base plate 19 is provided with a first inclined surface extending circumferentially, which slopes downward toward the first central hole. During the rotation of the inner cylinder 4, the material located at the lower part of the inner wall of the inner cylinder 4 will slide along the first inclined surface toward the central area under the action of gravity. By using the first inclined surface to guide the flow of material, the accumulation of cow manure solids at the connection between the inner wall of the inner cylinder 4 and the rotating roller base plate 19 is reduced, thereby gathering the material toward the central area and preparing it for subsequent collection and packaging through the discharge port 27.

[0048] Preferably, the angle between the first inclined plane and the horizontal plane is 10°-25°, for example, it can be 10°, 13°, 20° or 25°.

[0049] In one embodiment of the present invention, the multi-point sample mixing and storage unit 202 has four stirring components, which are arranged symmetrically in pairs about the central axis of the inner cylinder 4. Preferably, the two adjacent stirring components are 90° apart.

[0050] In one embodiment of the present invention, such as Figure 2 As shown, the stirring assembly includes a support rod 5 and a stirring blade 9. The support rod 5 is connected to the inner wall of the inner cylinder 4. Specifically, the support rod 5 is vertically arranged, and a connecting rod is provided between the support rod 5 and the inner wall of the inner cylinder 4. The connecting rod is perpendicular to the support rod 5 and is welded to the support rod 5 and the inner wall of the inner cylinder 4. Since the inner cylinder 4 is rotatably fitted inside the outer cylinder 3, when the inner cylinder 4 rotates relative to the outer cylinder 3, the support rod 5 and the stirring blade 9 rotate synchronously with the inner cylinder 4, thereby applying a continuous stirring action to the sample entering the inner cylinder 4.

[0051] A blade fixing plate 8 is provided on the support rod 5, and the blade fixing plate 8 is welded to the support rod 5. The stirring blade 9 is bolted to the blade fixing plate 8, and this detachable connection method allows for easy replacement of the stirring blade 9. The stirring blade 9 is used to mix the sample collected by the spiral sampling and conveying unit 201. When the stirring blade 9 rotates with the inner cylinder 4, it pushes the sample to generate radial and circumferential flow inside the inner cylinder 4, causing materials from different sampling points to mix with each other, thereby reducing the heterogeneity inside the sample.

[0052] Preferably, the support rod 5 is provided with two stirring blades 9, one of which is located in the middle of the support rod 5, and the other is located in the lower part of the support rod 5. When the inner cylinder 4 rotates relative to the outer cylinder 3, the stirring blade 9 located in the middle of the support rod 5 agitates the sample in the middle region of the inner cylinder 4 during rotation, further dispersing the material from the spiral sampling and conveying unit 201 that has initially accumulated in the middle of the inner cylinder 4; the stirring blade 9 located in the lower part of the support rod 5 extends into the bottom region of the inner cylinder 4 to mix the sample in the lower part of the inner cylinder 4. Since solid cow manure tends to deposit in the lower part of the inner cylinder 4 under gravity, the rotation of the lower stirring blade 9 can turn the deposited material upwards or to the side, thereby reducing the accumulation or compaction of material at the bottom of the inner cylinder 4 and promoting the mixing of samples at different heights within the inner cylinder 4. The two stirring blades 9 generate a stirring effect in the middle and lower parts of the inner cylinder 4, respectively, which improves the homogenization of the sample in the vertical direction, thereby reducing the differences in component distribution caused by sample stratification.

[0053] In a preferred embodiment of the present invention, such as Figure 2As shown, the stirring blade 9 includes four stirring sections: a first stirring section, a second stirring section, a third stirring section, and a fourth stirring section connected in sequence. The first stirring section is bolted to the blade fixing plate 8. The second stirring section is deflected relative to the first stirring section by a predetermined angle, and the fourth stirring section is deflected relative to the third stirring section by a predetermined angle, thus forming a stirring blade 9 with a certain bending angle. The deflection direction of the stirring blade 9 is opposite to the rotation direction. When the stirring blade 9 rotates, because the deflection direction is opposite to the rotation direction, the bent stirring blade 9 causes the sample to be subjected to a radially inward component force during the cutting process, thereby generating a radial dispersion effect. While stirring the sample, it prevents the sample from agglomerating near the inner wall of the inner cylinder 4 due to centrifugal force during rotation, thus maintaining the uniformity of sample distribution on the cross-section of the inner cylinder 4.

[0054] Preferably, the predetermined angle is 20°-30°, for example, the predetermined angle is 20°, 25° or 30°.

[0055] In one embodiment of the present invention, such as Figures 2 to 4 As shown, the stirring assembly also includes a rubber scraper 10, which is connected to the lower end of the support rod 5 and is located below the lower stirring blades 9. When the inner cylinder 4 rotates relative to the outer cylinder 3, the support rod 5 drives the rubber scraper 10 to rotate along with the inner cylinder 4. The bottom of the rubber scraper 10 is provided with a second inclined surface, and the first inclined surface and the second inclined surface are parallel to each other, that is, the angle between the second inclined surface and the horizontal plane is 10°-25°. During rotation, the second inclined surface of the rubber scraper 10 remains parallel to the first inclined surface on the rotating roller bottom plate 19 and is spaced a certain distance apart. When the rubber scraper 10 rotates with the support rod 5, the second inclined surface sweeps over the first inclined surface, scraping the sample accumulated on the upper part of the rotating roller bottom plate 19, so that the material attached to the surface of the bottom plate is pushed and moves towards the first central hole area along the inclined direction of the first inclined surface. At the same time, the rotation of the rubber scraper 10 guides the sample to move towards the discharge port 27, so that the sample enters the discharge port 27. Since the second inclined plane is parallel to the first inclined plane, the gap between the rubber scraper 10 and the base plate is uniform when the scraper 10 sweeps across the base plate, thereby reducing the local accumulation or omission of the sample during the scraping process.

[0056] Preferably, the rubber scraper 10 is triangular, but it can also be rectangular or other shapes.

[0057] In one embodiment of the present invention, such as Figure 2As shown, the discharge port control assembly includes a large gear 18 and a drive mechanism. The large gear 18 is rotatably disposed below the rotating roller base plate 19. The large gear 18 has a second central hole and multiple strip-shaped through holes, with the second central hole located at the center of the large gear 18. In this embodiment, four strip-shaped through holes are provided. Of course, the number of strip-shaped through holes is not limited to this and is determined according to the number of discharge ports 27. The four strip-shaped through holes are arranged at equal intervals around the second central hole in the circumferential direction, and the strip-shaped through holes extend radially along the large gear 18.

[0058] The central axis of the first central hole coincides with the central axis of the second central hole. Since the first and second central holes are coaxial, the screw conveyor housing 7 can pass through the two central holes without contacting the large gear 18, thereby avoiding motion interference.

[0059] The driving mechanism includes a second drive motor 22, which is connected to the outer cylinder 3. A small gear 20 is sleeved on the shaft of the second drive motor 22, meshing with a large gear 18. When the second drive motor 22 drives the small gear 20 to rotate, the small gear 20 drives the large gear 18 to rotate relative to the rotating roller base plate 19. The rotation of the large gear 18 causes a change in the relative position between the strip-shaped through-hole and the discharge port 27. When the strip-shaped through-hole overlaps with the discharge port 27, the discharge port 27 opens, and the mixed sample sequentially passes through the discharge port 27, the strip-shaped through-hole, and the material inlet into the corresponding sealed bag 13. When the large gear 18 continues to rotate, causing the strip-shaped through-hole to misalign with the discharge port 27, the discharge port 27 is closed by the solid part of the large gear 18, and the sample stops falling. By controlling the rotation direction and angle of the second drive motor 22, the discharge port 27 can be intermittently opened and closed, thereby adjusting the sample quantity for each feeding and ensuring the on-demand, quantitative, and controllable sampling process. The radially extending and equidistantly spaced strip-shaped through-holes allow the large gear 18 to control the synchronous opening or closing of all discharge ports 27 with only a fixed rotation angle, ensuring consistent feeding timing across multiple discharge ports 27.

[0060] In one embodiment of the present invention, such as Figure 2As shown, the spiral sampling and conveying unit 201 includes a spiral conveying housing 7, a conveying shaft 2, spiral conveying blades 6, a first drive motor 1, and an inner spiral turntable 15. The spiral conveying housing 7 has a tubular structure and is vertically arranged. The upper end of the spiral conveying housing 7 extends into the inner cylinder 4 after passing through the second central hole and the first central hole in sequence. The upper end of the spiral conveying housing 7 has a material outlet 23. The lower end of the spiral conveying housing 7 passes through the sample collection and packaging unit 203 and is fixedly connected to the sample collection and packaging unit 203. Specifically, the lower end of the spiral conveying housing 7 passes through the sample dispensing chamber 16 and is welded to the sample dispensing chamber 16. This fixed connection method enables the spiral conveying housing 7 to maintain a relatively stable position during the operation of the device.

[0061] The conveying shaft 2 passes through the interior of the spiral conveying housing 7, and is coaxially arranged with the spiral conveying housing 7. The spiral conveying blades 6 are spirally extended around the outer circumference of the conveying shaft 2. The first drive motor 1 is located at the top of the outer cylinder 3, and the shaft of the first drive motor 1 is connected to the upper end of the conveying shaft 2. Specifically, the top of the outer cylinder 3 is provided with a bearing seat 26, and the housing of the first drive motor 1 is fixedly connected to the bearing seat 26. The shaft of the first drive motor 1 rotates in conjunction with the bearing inside the bearing seat 26. The rotational engagement between the shaft of the first drive motor 1 and the bearing allows the conveying shaft 2 to rotate relative to the bearing seat 26, thereby driving the spiral conveying blades 6 to rotate and realize the spiral conveying of the sample.

[0062] The inner spiral turntable 15 is fitted around the lower end of the spiral conveying blade 6 and connected to the lower end of the spiral conveying blade 6 via a connecting block. During the rotation of the spiral conveying blade 6, the inner spiral turntable 15 rotates synchronously with the spiral conveying blade 6, which is used to collect the solid cow manure in the outer peripheral area of ​​the lower port of the spiral conveying housing 7 to the lower port of the spiral conveying housing 7, thereby improving the efficiency of the spiral conveying blade 6 in grasping and conveying samples.

[0063] Furthermore, an opening is also provided at the top of the outer cylinder 3, and a bearing seat cover plate 25 is provided at the opening. The bearing seat cover plate 25 seals the opening and is connected to the outer cylinder 3 by bolts to facilitate cleaning and disinfection of the interior of the mixing device.

[0064] Furthermore, the bearing housing 26 is disposed on the upper part of the bearing housing cover plate 25, and the rotating shaft of the first drive motor 1 passes through the bearing housing cover plate 25 and is sleeved and connected to the upper end of the conveying shaft 2 to facilitate disassembly of the mixing device. In one embodiment of the present invention, as Figure 2 , Figure 5 and Figure 6As shown, the sample collection and packaging unit 203 includes a sample dispensing chamber 16, a packaging cover 17, and an automatic vacuum sealing machine 30. The top of the sample dispensing chamber 16 has an opening, providing a channel for the installation of the packaging cover 17 and the entry of materials. The packaging cover 17 is a circular plate, positioned at the opening of the sample dispensing chamber 16 and below the large gear 18. A certain spatial distance is maintained between the packaging cover 17 and the large gear 18 to avoid interference between the large gear 18 and the packaging cover 17 during rotation. The packaging cover 17 is connected to the rotating roller base plate 19 to fix the sample dispensing chamber 16 to the outer cylinder 3, thereby ensuring that the sample dispensing chamber 16 is stationary during operation.

[0065] The sealing cover 17 is provided with multiple material inlets, the positions of which correspond one-to-one with the positions of the discharge ports 27. This corresponding arrangement allows the sample discharged from the discharge port 27 to fall directly into the corresponding material inlet. The material inlets extend radially along the sealing cover 17, and each material inlet has two opposing long sidewalls and two opposing short sidewalls. Each material inlet has a sample bag opening bracket 28 on its two opposing long sidewalls, which is used to open the sealed bag 13. By setting the sample bag opening bracket 28, the opening of the sealed bag 13 can be kept open in the material inlet, providing a smooth passage for the sample to enter. In use, the sealed bag 13 is hung on the sample bag opening bracket 28 through the hanging hole on the sealed bag 13, so that the sealed bag 13 is in the open state, making it convenient for the sample to enter the sealed bag 13 through the material inlet. This hanging method can maintain the open posture of the sealed bag 13 without the aid of external clamping tools, which helps to simplify the operation steps.

[0066] An automatic vacuum sealing machine 30 is positioned below the material inlet and connected to the sealing cover 17, remaining fixed relative to the sealing cover 17. The automatic vacuum sealing machine 30 is used to vacuum and seal the sealed bags 13. After the sealed bags 13 are installed in place, positioned between the automatic vacuum sealing machines 30, once the sample inside the sealed bags 13 reaches a predetermined quantity, the automatic vacuum sealing machine 30 vacuums and seals the sealed bags 13. Through this process, the samples can be sealed promptly after dispensing, reducing the exposure time of the samples to air.

[0067] In one embodiment of the present invention, such as Figure 2 , Figure 5 and Figure 6As shown, each material inlet has two opposing long sidewalls equipped with vacuum suction cups 29, which are used to adsorb the sealing bag 13. During the placement of the sealing bag 13, the vacuum suction cups 29 contact the outer surface of the sealing bag 13 and generate an adsorption force. This adsorption force can constrain the position of the sealing bag 13 to prevent it from falling off the sample bag opening frame 28 during use, thus preventing sealing failure. Through this adsorption, the sealing bag 13 can maintain a relatively stable posture during sample entry and sealing, and the bag opening position is not easily shifted, which facilitates the smooth falling of the sample into the bag and reduces dispensing interruptions or sample spillage caused by the sealing bag 13 falling off.

[0068] In one embodiment of the present invention, such as Figure 2 , Figure 5 and Figure 6 As shown, a collection chamber outlet 14 is provided on the side wall of the sample dispensing chamber 16, and a collection observation window 12 is provided on the collection chamber outlet 14. The collection observation window 12 is hinged to the side wall of the sample dispensing chamber 16 via a hinge 11. The collection chamber outlet 14 facilitates the installation and removal of the sealing bag 13. The sample dispensing chamber 16 can hold sealing bags 13 of different materials according to sampling needs, to meet the requirements of special analytical indicators for the material of the sampling container, such as kraft paper bags and plastic self-sealing bags. It can achieve flexible adaptation and meet the differentiated requirements of different pollutant detection methods for container materials. This adaptability allows the same device to be used in multiple detection scenarios without changing the overall structure.

[0069] In one embodiment of the present invention, a temperature sensor (not shown) and a humidity sensor (not shown) are provided on the inner wall of the spiral conveyor housing 7. The temperature sensor is used to detect the temperature of the sample, and the humidity sensor is used to detect the humidity of the sample. A display screen is provided on the top of the outer cylinder 3. The display screen is electrically connected to the temperature sensor and the humidity sensor. The display screen is used to display the temperature and humidity of the sample so that the operator can record the initial temperature and humidity of the sample.

[0070] Working principle of a multi-point sampling, mixing, and dispensing device for solids in dairy cow manure: During use, hold the handle 24 to secure the outer cylinder 3. Control the first drive motor 1 to drive the conveyor shaft 2 to rotate. The rotating conveyor shaft 2 drives the spiral conveyor blades 6 and the inner spiral turntable 15 to rotate. The rotating inner spiral turntable 15 guides and promotes the movement of the cow manure solids towards the lower port area of ​​the spiral conveyor housing 7, thereby ensuring that the lower end of the spiral conveyor blades 6 is in continuous contact with the cow manure solids and avoiding the spiral conveyor blades 6 from spinning idly or being suspended in the air during sampling. The collected sample is conveyed to the material outlet 23 of the spiral conveyor housing 7 under the drive of the spiral conveyor blades 6 and scattered in all directions, achieving preliminary mixing.

[0071] When the inner cylinder 4 rotates relative to the outer cylinder 3, the stirring blades 9 located in the middle of the support rod 5 agitate the sample in the middle region of the inner cylinder 4 during rotation, further dispersing the material from the spiral sampling and conveying unit 201 that has initially accumulated in the middle of the inner cylinder 4. The stirring blades 9 located at the lower part of the support rod 5 extend into the bottom region of the inner cylinder 4 to mix the sample in the lower part of the inner cylinder 4. Since solid cow manure tends to deposit in the lower part of the inner cylinder 4 under gravity, the rotation of the lower stirring blades 9 can turn the deposited material upwards or to the side, thereby reducing the accumulation or compaction of material at the bottom of the inner cylinder 4, promoting the mixing of samples at different heights within the inner cylinder 4, achieving secondary mixing of the samples, and thus improving the overall representativeness of the samples.

[0072] Simultaneously, the support rod 5 drives the rubber scraper 10 to rotate, scraping the sample accumulated on the bottom plate 19 of the rotating roller, causing the material adhering to the surface of the bottom plate to be pushed and moved towards the first central hole area along the inclined direction of the first slope. At the same time, the rotation of the rubber scraper 10 guides the sample toward the discharge port 27, allowing the sample to enter the discharge port 27.

[0073] When the second drive motor 22 drives the pinion 20 to rotate, the pinion 20 drives the large gear 18 to rotate relative to the rotating roller base plate 19. During the rotation of the large gear 18, the relative position between the strip-shaped through hole and the discharge port 27 changes; when the strip-shaped through hole overlaps with the discharge port 27, the discharge port 27 opens, and the mixed sample sequentially passes through the discharge port 27, the strip-shaped through hole, and the material inlet into the corresponding sealed bag 13. When the large gear 18 continues to rotate, causing the strip-shaped through hole to misalign with the discharge port 27, the discharge port 27 is closed by the solid part of the large gear 18, and the sample stops falling.

[0074] After the samples are placed into their respective sample bags, the automatic vacuum sealing machine 30 is started to vacuum the sealing bags 13 and complete the sealing process. The sample dispensing chamber 16 is equipped with an observation window. After opening the window, the sealed samples can be removed as a whole at once and placed into a new sealing bag 13, thereby effectively improving the efficiency of sample dispensing and collection.

[0075] Finally, it should be noted that the above embodiments are only for illustrating the present invention and not for limiting the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and should be covered within the scope of the claims of the present invention.

Claims

1. A multi-point sampling, mixing, and dispensing device for solid dairy cow manure, characterized in that, include: A spiral sampling and conveying unit (201) is used for multi-point sampling of solids in dairy cow manure; A sample mixing and storage unit (202) is connected to the spiral sampling and conveying unit (201). The sample mixing and storage unit (202) is used to mix the sample collected by the spiral sampling and conveying unit (201). The sample collection and packaging unit (203) is connected to the sample mixing and storage unit (202). The sample collection and packaging unit (203) is used to package the sample after it has been mixed by the sample mixing and storage unit (202) into a sealed bag (13).

2. The multi-point sampling, mixing, and dispensing device for dairy cow manure solids according to claim 1, characterized in that, The sample mixing and storage unit (202) includes: The outer cylinder (3) has an opening at its bottom; Inner cylinder (4), the inner cylinder (4) is rotatably fitted inside the outer cylinder (3), the interior of the inner cylinder (4) is connected to the spiral sampling and conveying unit (201), and the bottom of the inner cylinder (4) is provided with an opening; A stirring assembly is disposed inside the inner cylinder (4) and connected to the inner wall of the inner cylinder (4); the stirring assembly is used to mix the sample entering the inner cylinder (4); A rotating roller base plate (19) is provided at the opening of the outer cylinder (3), the inner cylinder (4) is rotatably engaged with the rotating roller base plate (19), the rotating roller base plate (19) is provided with a discharge port (27), and the sample collection and packaging unit (203) is connected to the rotating roller base plate (19). The discharge port control component is connected to the rotating roller base plate (19) and the outer cylinder (3). The discharge port control component is used to control the opening and closing of the discharge port (27).

3. The multi-point sampling, mixing, and dispensing device for dairy cow manure solids according to claim 2, characterized in that, The rotating roller base plate (19) has a first central hole at its center, and there are multiple discharge ports (27), which are spaced around the outer periphery of the first central hole.

4. The multi-point sampling, mixing, and dispensing device for dairy cow manure solids according to claim 3, characterized in that, The upper part of the rotating roller bottom plate (19) is provided with a first inclined surface extending in the circumferential direction, and the first inclined surface is inclined downward toward the first central hole.

5. The multi-point sampling, mixing, and dispensing device for dairy cow manure solids according to claim 4, characterized in that, The stirring assembly includes: Support rod (5), the support rod (5) is connected to the inner wall of the inner cylinder (4), and a blade fixing plate (8) is provided on the support rod (5). The stirring blade (9) is detachably connected to the blade fixing plate (8) and is used to mix the sample collected by the spiral sampling and conveying unit (201).

6. The multi-point sampling, mixing, and dispensing device for dairy cow manure solids according to claim 5, characterized in that, The stirring assembly further includes: A rubber scraper (10) is connected to the lower end of the support rod (5). The bottom of the rubber scraper (10) is provided with a second inclined surface, and the first inclined surface and the second inclined surface are parallel to each other.

7. The multi-point sampling, mixing, and dispensing device for dairy cow manure solids according to claim 3 or 4, characterized in that, The discharge port control component includes: A large gear (18) is rotatably disposed below the bottom plate (19) of the rotating roller. The large gear (18) is provided with a second central hole and a plurality of strip-shaped through holes. The second central hole is located at the center of the large gear (18), and the plurality of strip-shaped through holes are arranged at intervals on the outer periphery of the second central hole. The central axis of the first central hole coincides with the central axis of the second central hole. The drive mechanism is connected to the outer cylinder (3), and the shaft of the drive mechanism is fitted with a small gear (20), which meshes with the large gear (18).

8. The multi-point sampling, mixing, and dispensing device for dairy cow manure solids according to claim 7, characterized in that, The spiral sampling and conveying unit (201) includes: The upper end of the spiral conveying housing (7) extends into the interior of the inner cylinder (4) after passing through the second central hole and the first central hole in sequence. The upper end of the spiral conveying housing (7) has a material outlet (23). The lower end of the spiral conveying housing (7) passes through the sample collection and packaging unit (203) and is fixedly connected to the sample collection and packaging unit (203). The conveying shaft (2) passes through the interior of the spiral conveying housing (7); Spiral conveying blade (6), the spiral conveying blade (6) is arranged around the outer circumferential surface of the conveying shaft (2) and extends spirally; The first drive motor (1) is located on the top of the outer cylinder (3), and the shaft of the first drive motor (1) is connected to the upper end of the conveying shaft (2). The inner spiral turntable (15) is sleeved on the outer periphery of the lower end of the spiral conveying blade (6) and connected to the lower end of the spiral conveying blade (6) through a connecting block.

9. The multi-point sampling, mixing, and dispensing device for dairy cow manure solids according to claim 8, characterized in that, The sample collection and packaging unit (203) includes: The sample dispensing chamber (16) has an opening at the top; A sealing cover (17) is provided at the opening of the sample dispensing chamber (16) and below the large gear (18). The sealing cover (17) is connected to the bottom plate (19) of the rotating roller. The sealing cover (17) is provided with multiple material inlets, and the positions of the material inlets correspond one-to-one with the positions of the discharge port (27). Each material inlet has two opposite long sidewalls provided with sample bag opening frames (28), which are used to open the sealed bag (13). An automatic vacuum sealing machine (30) is located below the material inlet and connected to the sealing cover plate (17). The automatic vacuum sealing machine (30) is used to vacuum and seal the sealing bag (13).

10. The multi-point sampling, mixing, and dispensing device for dairy cow manure solids according to claim 9, characterized in that, Each of the material inlets is provided with a vacuum suction cup (29) on each of the two opposite long sidewalls, the vacuum suction cup (29) being used to adsorb the sealed bag (13).

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