Mixing sampling system
By introducing a mixing mechanism and a sampling mechanism into the sampler, the problem of the existing sampler's inability to mix is solved, achieving thorough mixing and efficient sampling of grains, and improving the accuracy of test results.
Patent Information
- Application Number
- CN202520470196.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-17
AI Technical Summary
Existing sampling machines cannot mix grains, resulting in inaccurate test results.
A mixed sampling system was designed, including a sampler, a negative pressure chamber, a mixing mechanism, and a sampling mechanism. The raw grain in the sampling tube is transported to the mixing mechanism for mixing by the negative pressure state in the negative pressure chamber, and then sent to the sampling mechanism for sampling through a second conveying pipeline, ensuring that the grain is fully mixed before testing.
It improves sampling efficiency and the accuracy of test results, avoids the loss of raw grains during transportation, prevents the spread of dust and particulate matter, and realizes automated mixing and sampling processes.
Smart Images
Figure CN223940597U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of grain testing technology, and in particular to a mixed sampling system. Background Technology
[0002] In the process of grain sampling and processing, conducting physicochemical tests on grain samples is a crucial step in ensuring grain quality and safety. As a device for extracting grain samples, the design of a sampler directly affects the representativeness of the samples and the accuracy of the test results. Traditional samplers insert a hollow rod into the grain pile, using a negative pressure pipeline to draw the grain sample into the rod, which is then extracted, separated, and sampled for subsequent testing.
[0003] However, the negative pressure pipeline in existing samplers only has a sampling function, that is, it divides the sucked raw grains into samples according to a set ratio, but it does not have a mixing function. Because the sampler extracts grain samples in a specific order, the grains sampled first will enter the lower layer of the sample hopper, and the grains sampled later will enter the upper layer of the sample hopper. With this sampling method, the grains in the sample hopper are not fully mixed, resulting in samples that are not representative for direct testing and the test results are not accurate enough. Utility Model Content
[0004] The main purpose of this invention is to propose a mixed sampling system, which aims to solve the problem that existing sampling systems cannot mix grains, resulting in inaccurate test results.
[0005] To achieve the above objectives, the present invention proposes a hybrid sampling system, which includes:
[0006] A sampler, which has a sample tube for taking samples of raw grains;
[0007] The negative pressure chamber is formed with negative pressure inside and is connected to the sampling tube through the first delivery pipeline;
[0008] The first delivery pipeline is located between the negative pressure chamber and the sampler, and connects the sampler tube to the top of the negative pressure chamber;
[0009] A mixing mechanism is located below the negative pressure chamber and is connected to the bottom of the negative pressure chamber;
[0010] A second delivery pipeline is located between the negative pressure chamber and the mixing mechanism, and connects the bottom of the mixing mechanism and the top of the negative pressure chamber; and
[0011] The sample separation mechanism is located at the bottom of the negative pressure chamber and is connected to the bottom of the negative pressure chamber.
[0012] In one embodiment, the mixing mechanism includes:
[0013] A mixing tank, internally comprising a first mixing chamber and a second mixing chamber, wherein the bottom of the first mixing chamber is connected to the second mixing chamber, and the mixing tank is connected to the negative pressure chamber and the second conveying pipeline; and
[0014] A material leveling component is located near the inlet of the mixing tank. The material leveling component has an independent first material passage and a second material passage. The first material passage is connected to the first mixing chamber, and the second material passage is connected to the second mixing chamber, so that the material is dispersed by the material leveling component and then enters the second mixing chamber for remixing.
[0015] In one embodiment, the mixing mechanism further includes a first flow guide shroud, the outer diameter of which gradually increases from one end near the top of the mixing tank to one end away from the top of the mixing tank, and a plurality of the material leveling components are provided at intervals along the bottom periphery of the first flow guide shroud.
[0016] In one embodiment, the material homogenizing assembly includes an inner funnel and an outer funnel, wherein a first material passage is formed in the inner funnel, a second material passage is formed in the outer funnel, and the outlet of the inner funnel faces the first mixing chamber, and the outlet of the outer funnel faces the second mixing chamber.
[0017] In one embodiment, the mixing tank is further provided with a pressure regulating pipeline, which is connected to the interior of the mixing tank.
[0018] In one embodiment, a guide cavity is further formed inside the mixing tank, the guide cavity being located at the inlet of the mixing tank, and the cross-sectional area of the guide cavity gradually decreases in the direction approaching the homogenizing assembly.
[0019] In one embodiment, the sample separation mechanism includes:
[0020] The material distribution tank is connected to the bottom of the negative pressure chamber, forming an independent first and second storage chamber inside;
[0021] A sample hopper is located below the distribution tank and is connected to the first storage bin; and a waste hopper is located below the distribution tank and is connected to the second storage bin.
[0022] In one embodiment, the sampling mechanism further includes a material dispensing component, which is disposed near the inlet of the material dispensing tank. The material dispensing component includes a first sampling hopper and a second sampling hopper, with the outlet of the first sampling hopper facing the first storage bin and the outlet of the second sampling hopper facing the second storage bin.
[0023] In one embodiment, the sample dispensing mechanism further includes a second flow guide shroud, the outer diameter of which gradually increases from one end near the top of the dispensing tank to one end away from the top of the dispensing tank, and both the first and second sample dispensing hoppers are provided with multiple hoppers spaced apart along the bottom periphery of the second flow guide shroud.
[0024] In one embodiment, the mixed sampling system further includes a negative pressure generating device, which is connected to the negative pressure chamber to generate a negative pressure state inside the negative pressure chamber, so as to draw the raw grain in the first conveying pipeline into the negative pressure chamber.
[0025] In one embodiment, the mixed sampling system further includes a three-way mechanism for connecting the negative pressure chamber, the mixing mechanism, and the sample dispensing mechanism.
[0026] In one embodiment, the mixed sampling system further includes a backflushing mechanism connected to the first delivery pipeline and located near the negative pressure chamber.
[0027] In this invention, the first conveying pipeline transports the raw grain sampled from the sampling tube to the negative pressure chamber. A mixing mechanism connected to the negative pressure chamber is then installed, allowing the raw grain to be mixed before entering the sampling mechanism. The mixed grain is then transported to the negative pressure chamber via the second conveying pipeline, and finally to the sampling mechanism for sampling and testing. The negative pressure within the negative pressure chamber provides the power for transporting the raw grain, and the first conveying pipeline allows the raw grain to be directly transported from the sampling tube to the negative pressure chamber, avoiding loss during transport. The negative pressure environment also helps prevent the diffusion of dust and particulate matter. The grain is then mixed again via the mixing mechanism, which can be done once or multiple times. Finally, the sample is divided by the sampling mechanism. The entire process is highly automated, improving sampling efficiency and the accuracy of the sampling and testing results. Attached Figure Description
[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0029] Figure 1 A schematic diagram of the structure of an embodiment of the hybrid sampling system provided by this utility model;
[0030] Figure 2 A schematic diagram of the mixing mechanism in another embodiment of the mixed sampling system provided by this utility model;
[0031] Figure 3 A schematic diagram of the sample distribution tank in another embodiment of the mixed sampling system provided by this utility model.
[0032] Explanation of icon numbers:
[0033] 100. Mixed sampling system; 1. Sampling machine; 2. Negative pressure chamber; 3. First conveying pipeline; 4. Mixing mechanism; 41. Mixing tank; 411. First mixing chamber; 412. Second mixing chamber; 413. Pressure regulating pipeline; 414. Guide chamber; 42. Homogenizing component; 421. Inner funnel; 422. Outer funnel; 43. First guide hood; 5. Second conveying pipeline; 6. Sample dispensing mechanism; 61. Dispensing tank; 611. First storage bin; 612. Second storage bin; 62. Sample hopper; 63. Waste hopper; 64. Dispensing component; 641. First dispensing hopper; 642. Second dispensing hopper; 65. Second guide hood; 7. Negative pressure generating device; 71. Dust collector; 8. Three-way mechanism; 9. Backflushing mechanism.
[0034] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0036] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0037] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0038] The negative pressure pipeline in existing samplers only has a sampling function, that is, it divides the sucked raw grains into samples according to a set ratio, but it does not have a mixing function. Because the samplers extract grain samples in a specific order, the grains that are sampled first will enter the lower layer of the sample hopper, and the grains that are sampled later will enter the upper layer of the sample hopper. With this sampling method, the grains in the sample hopper are not fully mixed, resulting in samples that are not representative for direct testing and the test results are not accurate enough.
[0039] This invention proposes a hybrid sampling system.
[0040] Please see Figure 1 In one embodiment of the present invention, the hybrid sampling system 100 includes:
[0041] Sampler 1, which has a sample tube for taking samples of raw grain;
[0042] The negative pressure chamber 2 is internally negative pressure and is connected to the sampling tube through the first delivery pipeline 3;
[0043] The first delivery pipeline 3 is located between the negative pressure chamber 2 and the sampler 1, and connects the sampler tube and the top of the negative pressure chamber 2.
[0044] The mixing mechanism 4 is located below the negative pressure chamber 2 and is connected to the bottom of the negative pressure chamber 2;
[0045] The second conveying pipeline 5 is located between the negative pressure chamber 2 and the mixing mechanism 4, and connects the bottom of the mixing mechanism 4 and the top of the negative pressure chamber 2; and
[0046] The sample separation mechanism 6 is located at the bottom of the negative pressure chamber 2 and is connected to the bottom of the negative pressure chamber 2.
[0047] In the technical solution of this utility model, the first conveying pipeline 3 transports the raw grain sampled from the sampling tube to the negative pressure chamber 2. A mixing mechanism 4, connected to the negative pressure chamber 2, ensures that the raw grain in the negative pressure chamber 2 is mixed before entering the sampling mechanism 6. The mixed grain is then transported to the negative pressure chamber 2 by the second conveying pipeline 5, and finally reaches the sampling mechanism 6 for sampling and testing. The negative pressure state within the negative pressure chamber 2 provides power for the transport of the raw grain, and the first conveying pipeline 3 allows the raw grain to be directly transported from the sampling tube to the negative pressure chamber 2, avoiding loss during transport. The negative pressure environment also helps prevent the diffusion of dust and particulate matter. The grain is then mixed again by the mixing mechanism 4, which can be done once or multiple times. Finally, the sample is divided by the sampling mechanism 6. The entire process is highly automated, improving sampling efficiency and the accuracy of the sampling and testing results.
[0048] Specifically, the mixing mechanism 4 can be a rotating container with stirring blades for mixing raw grains. For example, it can be a cylindrical or conical container with multiple stirring blades inside, and the stirring blades are driven by a motor to rotate, achieving one or more mixing operations of the raw grains. The second conveying pipeline 5 can be a pipe connecting the mixing mechanism 4 and the negative pressure chamber 2, used to transport the mixed raw grains back to the negative pressure chamber 2; the first conveying pipeline 3 can be a section of pipe connecting the sampling tube and the negative pressure chamber 2, used to transport the raw grains from the sampling tube to the negative pressure chamber 2. The length and diameter of the first conveying pipeline 3 and the second conveying pipeline 5 are not specifically limited. The sampling mechanism 6 can be a sampler with multiple outlets, used to divide the mixed raw grains into multiple samples. For example, it can be a funnel-shaped structure with multiple outlets, and different proportions of sampling can be achieved by adjusting the size and number of outlets. The negative pressure chamber 2 can be a closed container, with a negative pressure environment created inside by an air extraction system. For example, it can be a stainless steel container, with an interface at the top for connecting to the first conveying pipeline 3, and an interface at the bottom for connecting to the second conveying pipeline 5 and the sample dispensing mechanism 6.
[0049] In the embodiments of this utility model, please refer to Figure 2 The hybrid mechanism 4 includes:
[0050] The mixing tank 41 has a first mixing chamber 411 and a second mixing chamber 412 inside, and the bottom of the first mixing chamber 411 is connected to the second mixing chamber 412. The mixing tank 41 is connected to the negative pressure chamber 2 and the second conveying pipeline 5; and
[0051] The material leveling component 42 is located near the inlet of the mixing tank 41. The material leveling component 42 has an independent first material passage and a second material passage. The first material passage is connected to the first mixing chamber 411, and the second material passage is connected to the second mixing chamber 412, so that the material is dispersed by the material leveling component 42 before entering the first mixing chamber 411 and the second mixing chamber 412.
[0052] Specifically, the material leveling component 42 can be a funnel-shaped structure with multiple dispersing plates. These dispersing plates can be a series of parallel baffles used to disperse the material flow. After being dispersed by the dispersing plates, the material enters the first and second feed channels respectively, and then enters the corresponding mixing chambers. The material in the first mixing chamber 411 reaches the bottom and flows into the second mixing chamber 412 to complete the final mixing, forming a mixed grain. The dispersing plates can also be set with different angles and shapes to adapt to different material characteristics and mixing requirements. The setting of the material leveling component 42 ensures that the material is effectively dispersed before entering the mixing chamber, reducing the accumulation and uneven distribution of the material during the mixing process and optimizing the flow path of the material. The mixing tank 41 can be a cylindrical container, with the interior divided into two independent mixing chambers by a partition. By setting independent first and second mixing chambers 411 and corresponding first and second feed channels, the material is dispersed by the material leveling component 42 before entering the mixing chamber, which helps to improve the mixing uniformity and ensure the consistent quality of the mixed material.
[0053] In the embodiments of this utility model, please refer to Figure 2 The mixing mechanism 4 also includes a first guide shroud 43. The outer diameter of the first guide shroud 43 gradually increases from the end near the top of the mixing tank 41 to the end away from the top of the mixing tank 41, and multiple uniform material components 42 are spaced along the bottom periphery of the first guide shroud 43. Since the first guide shroud 43 has a conical or truncated cone-shaped structure with a gradually increasing outer diameter, the raw material is evenly dispersed to the surrounding area from the apex of the first guide shroud 43 located at the center of the inlet of the mixing tank 41 before falling into the multiple uniform material components 42 below. This is equivalent to first performing preliminary pre-dispersion on the surface of the first guide shroud 43, and then evenly falling onto the circumference of the bottom of the first guide shroud 43. Subsequently, the uniform material components 42 further mix and disperse the material. Finally, the material entering the first mixing chamber 411 enters the second mixing chamber 412 to complete the final mixing, thereby improving the uniformity of the mixing.
[0054] In the embodiments of this utility model, please refer to Figure 2The material mixing component 42 includes an inner funnel 421 and an outer funnel 422. A first material passage is formed in the inner funnel 421 and a second material passage is formed in the outer funnel 422. The outlet of the inner funnel 421 faces the first mixing chamber 411, and the outlet of the outer funnel 422 faces the second mixing chamber 412. Multiple inner funnels 421 and outer funnels 422 can be provided below the first flow guide shroud 43. The multiple inner funnels 421 and multiple outer funnels 422 are evenly spaced. That is to say, the material reaching the bottom of the first flow guide shroud 43 will fall evenly into the multiple inner and outer funnels 422, forming multiple different flow paths. Then, the material in the inner funnel 421 enters the first mixing chamber 411, and the material in the outer funnel 422 enters the second mixing chamber 412. Finally, the material in the first mixing chamber 411 flows into the second mixing chamber 412 to form mixed grain. When the mixed grain is sucked out from the mixing tank 41, the mixed grain located in the center of the mixing tank 41 flows out first, making the mixing more uniform. At this time, a complete mixing is completed.
[0055] In the embodiments of this utility model, please refer to Figure 2 The mixing tank 41 is also equipped with a pressure regulating pipeline 413, which is connected to the interior of the mixing tank 41. The pressure regulating pipeline 413 may include a pressure regulating valve and a connecting pipe, for example, it may be a stainless steel pipe with a manual or automatic pressure regulating valve. The pressure regulating pipeline 413 is connected to the interior of the mixing tank 41 to regulate and control the pressure inside the mixing tank 41, ensuring that the mixing process is carried out under suitable pressure conditions.
[0056] In the embodiments of this utility model, please refer to Figure 2 The mixing tank 41 also has a guide cavity 414 formed inside, located at the inlet of the mixing tank 41, and the cross-sectional area of the guide cavity 414 gradually decreases towards the homogenizing assembly 42. The guide cavity 414 can be designed as a truncated cone structure, located at the inlet of the mixing tank 41. The gradually decreasing cross-sectional area of the guide cavity 414 helps to concentrate the material flow, reducing splashing and dispersion of material during the mixing process. Furthermore, the gradual decrease in the cross-sectional area of the guide cavity 414 towards the homogenizing assembly 42 helps to guide the material flow towards the homogenizing assembly 42 and gradually accelerates it during the flow, improving mixing efficiency.
[0057] In the embodiments of this utility model, please refer to Figure 1 The sample distribution mechanism 6 includes:
[0058] The material distribution tank 61 is connected to the bottom of the negative pressure chamber 2, forming an independent first storage chamber 611 and second storage chamber 612 inside;
[0059] A sample grain hopper is located below the distribution tank 61 and is connected to the first storage bin 611; and
[0060] Waste hopper 63 is located below material distribution tank 61 and is connected to second storage bin 612.
[0061] Specifically, the distribution tank 61 can be designed as a container with a partition plate, dividing the interior of the tank into two independent storage bins. This allows for the separate storage and processing of sample grains and waste, effectively preventing mixing and ensuring sample purity. The sample grain hopper can be a funnel-shaped structure located below the distribution tank 61, connected to the first storage bin 611 and collecting sample grains from it. This design facilitates sample testing and analysis. The waste hopper 63 can also be a funnel-shaped structure located below the distribution tank 61, connected to the second storage bin 612 and collecting waste from it. This design helps with centralized waste processing, reducing manual labor and workload.
[0062] In the embodiments of this utility model, please refer to Figure 3 The sampling mechanism 6 also includes a material dispensing component 64, which is located near the inlet of the material dispensing tank 61. The material dispensing component 64 includes a first sampling hopper 641 and a second sampling hopper 642. The outlet of the first sampling hopper 641 faces the first storage silo 611, and the outlet of the second sampling hopper 642 faces the second storage silo 612. The material dispensing component 64 can be a frame with two funnel-shaped sampling hoppers mounted on it. The ratio of the first sampling hopper 641 to the second sampling hopper 642 is adjusted according to requirements to change the sampling ratio. The materials in the first sampling hopper 641 and the second sampling hopper 642 enter the first storage silo 611 and the second storage silo 612 respectively, and then enter the sample hopper 62 and the waste hopper 63 respectively.
[0063] In the embodiments of this utility model, please refer to Figure 3 The sampling mechanism 6 also includes a second guide hood 65. The outer diameter of the second guide hood 65 gradually increases from the end near the top of the dispensing tank 61 to the end away from the top of the dispensing tank 61. Multiple first and second sampling hoppers 641 and 642 are spaced apart along the bottom periphery of the second guide hood 65. Because the second guide hood 65 has a conical or truncated conical structure with a gradually increasing outer diameter, the raw material is evenly dispersed outwards from the apex of the second guide hood 65, located at the center of the dispensing tank 61 inlet, before falling into the multiple sampling hoppers below. This is equivalent to initial pre-dispersion on the surface of the second guide hood 65 before evenly falling onto the circumference of the bottom of the second guide hood 65. Subsequently, the multiple sampling hoppers further separate the multiple sample grains and waste grains.
[0064] In the embodiments of this utility model, please refer to Figure 1The mixed sampling system 100 also includes a negative pressure generating device 7, which is connected to the negative pressure chamber 2, creating a negative pressure state within the chamber to draw the raw grain from the first conveying pipeline 3 into the chamber. The negative pressure generating device 7 can be a vacuum pump or a fan used to generate negative pressure within the chamber 2. For example, it can be a centrifugal fan, whose power and speed can be adjusted as needed to generate the required negative pressure. The negative pressure generating device 7 is connected to the negative pressure chamber 2, and by generating negative pressure, it draws the raw grain from the first conveying pipeline 3 and the mixed grain from the second conveying pipeline 5 into the negative pressure chamber 2. Optionally, the sampling system may also include a dust collector 71. The negative pressure generating device 7 is connected to the negative pressure chamber 2 via the dust collector 71, ensuring that the airflow drawn from the negative pressure chamber 2 is filtered for dust and impurities by the dust collector 71 before entering the negative pressure generating device 7, thus guaranteeing the purity of the airflow inside the negative pressure generating device 7.
[0065] In the embodiments of this utility model, please refer to Figure 1 The mixing and sampling system 100 also includes a three-way mechanism 8, which connects the negative pressure chamber 2, the mixing mechanism 4, and the sampling mechanism 6. The three-way mechanism 8 can be a control valve with three pipe interfaces for controlling the material flow direction. For example, it can be a stainless steel three-way valve, with each interface equipped with a sealing ring to ensure a tight seal. The three passages of the three-way mechanism 8 are respectively used to connect the negative pressure chamber 2, the mixing mechanism 4, and the sampling mechanism 6. By rotating or switching the valve body, the flow direction of the material flowing out of the negative pressure chamber 2 is controlled. The three-way mechanism 8 includes a first passage connected to the three-way mechanism 8 and a second passage connected to the sampling mechanism 6. When the raw grain needs to be mixed, the first passage opens, and the raw grain enters the mixing mechanism 4; when the raw grain needs to be separated, the second passage opens, and the raw grain enters the sampling mechanism 6.
[0066] In the embodiments of this utility model, please refer to Figure 1 The mixed sampling system 100 also includes a backflushing mechanism 9, which is connected to the first conveying pipeline 3 and located near the negative pressure chamber 2. Because the distance between the sampler 1 and the negative pressure chamber 2 is relatively long, the first conveying pipeline 3 has the longest route and the most bends. During the sampling process, the grain contains many impurities, such as straw and rice stalks, which can easily cause blockages. Therefore, a backflushing assembly is installed in the first conveying pipeline 3. The backflushing assembly includes an external air source (such as a compressed air tank) and a third valve (such as a solenoid valve). During the sampling process, if the first conveying pipeline 3 becomes blocked, the first valve is closed and the third valve is opened. The external air source is connected to the first conveying pipeline 3, and the high-pressure gas provided by the external air source blows air in the opposite direction into the first conveying pipeline 3 to clear the blockage.
[0067] Optionally, as an optimization, some of the solutions in the above embodiments can be combined to form a new implementation scheme according to actual needs. In the specific implementation process, a first valve can be provided on the first conveying pipeline 3, a second valve on the second conveying pipeline 5, and a third valve in the backflushing assembly, depending on actual needs. When the sampler 1 performs sampling, the first valve opens, and both the second and third valves are closed. The three-way mechanism 8 is in a closed state, allowing the negative pressure chamber 2 to connect with the sampler 1 through the first conveying pipeline 3. Simultaneously, the negative pressure generating device 7 starts, generating a large amount of negative pressure to draw the grain into the negative pressure chamber 2. After sampling is completed, the first and third valves close, the first passage in the three-way mechanism 8 opens, and the raw grain enters the mixing mechanism 4 to form mixed grain. At this time, the pressure regulating pipeline 413 automatically closes to prevent dust from overflowing. Subsequently, the three-way mechanism 8 closes, the second valve opens, and the negative pressure chamber 2 connects with the mixing mechanism 4 through the second conveying pipeline 5, allowing the mixed grain to enter the negative pressure chamber 2, completing one mixing cycle of the raw grain. During this process, the pressure regulating pipe 413 is opened, automatically balancing the pressure within the mixing mechanism 4. Optionally, the number of mixing cycles can be manually set. After mixing is complete, the negative pressure generating device 7 is closed, and the second passage of the three-way mechanism 8 is opened, allowing the raw grain to enter the sampling mechanism 6 from the negative pressure chamber 2, thus separating the sample grain from the waste grain according to the specified ratio. This solution not only realizes the functions of grain suction and sampling of the sampler 1, but also integrates the function of mixing the sample grain, ensuring thorough mixing of the suctioned raw grain, making the obtained samples more representative, and the sampling and testing results more accurate.
[0068] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A hybrid sampling system, characterized in that, The hybrid sampling system includes: A sampler, which has a sample tube for taking samples of raw grains; The negative pressure chamber is formed with negative pressure inside and is connected to the sampling tube through the first delivery pipeline; The first delivery pipeline is located between the negative pressure chamber and the sampler, and connects the sampler tube to the top of the negative pressure chamber; A mixing mechanism is located below the negative pressure chamber and is connected to the bottom of the negative pressure chamber; A second delivery pipeline is located between the negative pressure chamber and the mixing mechanism, and connects the bottom of the mixing mechanism and the top of the negative pressure chamber; and The sample separation mechanism is located at the bottom of the negative pressure chamber and is connected to the bottom of the negative pressure chamber.
2. The hybrid sampling system as described in claim 1, characterized in that, The hybrid mechanism includes: A mixing tank, internally comprising a first mixing chamber and a second mixing chamber, wherein the bottom of the first mixing chamber is connected to the second mixing chamber, and the mixing tank is connected to the negative pressure chamber and the second conveying pipeline; and A material leveling component is located near the inlet of the mixing tank. The material leveling component has an independent first material passage and a second material passage. The first material passage is connected to the first mixing chamber, and the second material passage is connected to the second mixing chamber, so that the material is dispersed by the material leveling component and then enters the second mixing chamber for remixing.
3. The hybrid sampling system as described in claim 2, characterized in that, The mixing mechanism further includes a first flow guide shroud, the outer diameter of which gradually increases from one end near the top of the mixing tank to one end away from the top of the mixing tank, and multiple material leveling components are provided at intervals along the bottom periphery of the first flow guide shroud.
4. The hybrid sampling system as described in claim 3, characterized in that, The material homogenizing assembly includes an inner funnel and an outer funnel. The first material passage is formed inside the inner funnel, and the second material passage is formed inside the outer funnel. The outlet of the inner funnel faces the first mixing chamber, and the outlet of the outer funnel faces the second mixing chamber.
5. The hybrid sampling system as described in claim 2, characterized in that, The mixing tank is also equipped with a pressure regulating pipeline, which is connected to the interior of the mixing tank; and / or, The mixing tank also has a guide cavity formed inside, which is located at the inlet of the mixing tank, and the cross-sectional area of the guide cavity gradually decreases in the direction close to the homogenizing component.
6. The hybrid sampling system as described in claim 1, characterized in that, The sample separation mechanism includes: The material distribution tank is connected to the bottom of the negative pressure chamber, forming an independent first and second storage chamber inside; A sample hopper is located below the distribution tank and communicates with the first storage silo; and The waste hopper is located below the distribution tank and is connected to the second storage bin.
7. The hybrid sampling system as described in claim 6, characterized in that, The sampling mechanism further includes a material dispensing component, which is located near the inlet of the material dispensing tank. The material dispensing component includes a first sampling hopper and a second sampling hopper, with the outlet of the first sampling hopper facing the first storage bin and the outlet of the second sampling hopper facing the second storage bin.
8. The hybrid sampling system as described in claim 7, characterized in that, The sample dispensing mechanism also includes a second flow guide hood, the outer diameter of which gradually increases from one end near the top of the dispensing tank to one end away from the top of the dispensing tank, and both the first and second sample dispensing hoppers are provided with multiple hoppers spaced apart along the bottom periphery of the second flow guide hood.
9. The hybrid sampling system as described in claim 1, characterized in that, The mixed sampling system also includes a negative pressure generating device, which is connected to the negative pressure chamber to generate a negative pressure state in the negative pressure chamber, so as to draw the raw grain in the first conveying pipeline into the negative pressure chamber.
10. The hybrid sampling system as described in any one of claims 1 to 9, characterized in that, The mixed sampling system further includes a three-way mechanism for connecting the negative pressure chamber, the mixing mechanism, and the sample dispensing mechanism; and / or, The mixed sampling system also includes a backflushing mechanism, which is connected to the first delivery pipeline and located near the negative pressure chamber.