An online sample preparation and detection device for soybean meal

Abstract

The present application relates to the technical fields of agricultural product index detection, in particular to a soybean meal online sample preparation and detection device, which comprises an outer cabinet, a pulverizer, a lower hopper, a cold mixing part, a sample holding mechanism and a detection mechanism, wherein the pulverizer is installed on the upper part of the outer cabinet, the lower hopper is installed on the top surface of the outer cabinet and connected to the outer cabinet, the cold mixing part is connected to the outlet of the pulverizer and installed in the outer cabinet, and the sample holding mechanism and the detection mechanism are installed in the outer cabinet. The cold mixing part can cool and preserve the moisture of the sample while mixing the sample, fully preserving the moisture contained in the sample to ensure the moisture of the sample does not change and prevent the sample from affecting the detection due to sticky clumping. The device rapidly cools the just pulverized soybean meal sample to an appropriate temperature, avoiding the high temperature after mechanical pulverization affecting the accuracy of the detection data.

Description

Technical Field

[0001] This invention relates to the field of agricultural product indicator detection technology, and more specifically, to an online sample preparation and detection device for soybean meal. Background Technology

[0002] As a major source of feed protein, the rapid and accurate detection of the nutritional components of soybean meal is crucial for feed production enterprises to control costs, optimize formulations, and improve product quality.

[0003] The core value of soybean meal lies in providing protein; however, the protein content varies significantly between different batches and from different origins. If each batch of soybean meal is not tested before producing feed according to a fixed formula, the actual nutritional value of the feed will deviate significantly from the designed value. Insufficient protein will lead to slow growth and decreased egg and milk production in livestock and poultry, while excessive protein will result in waste and increase the burden on the liver and kidneys of animals. Furthermore, soybean meal is a commodity, and its trading is usually not based on a fixed price per "weight," but rather on a floating price based on "protein content." Contracts typically stipulate a benchmark protein content (such as 44% or 46%), and the price will increase or decrease accordingly for each percentage point higher or lower. Therefore, the accuracy of the testing results directly affects the settlement amount of transactions worth millions or tens of millions of dollars, and is the technical cornerstone of fair trade between buyers and sellers. Therefore, soybean meal from different batches and from different origins must be tested, and even during continuous production, soybean meal on the production line is tested regularly every hour.

[0004] Raw soybean meal is usually in flake or block form. It first needs to be crushed into fine particles using a grinder, and then cooled at a low temperature. This is to prevent clumping and to lower the temperature of the freshly crushed sample, minimizing its moisture content before testing. Therefore, in the traditional method, the processing and testing equipment after sampling are independent, requiring multiple manual sample transfers. This not only prolongs the testing time but also introduces the risk of cross-contamination and external contamination, leading to distorted test data and a series of negative consequences. Furthermore, as a solid particulate material, soybean meal has natural gaps between particles, making it prone to uneven distribution during sample filling. Internal air cannot escape in time, often accumulating air bubbles on the inner wall of the sample cup, resulting in uneven sample density and... The presence of air bubbles significantly alters the light scattering path and effective optical path, causing severe and irregular drift and jitter in the spectral baseline. Furthermore, characteristic absorption peaks representing key components such as protein and moisture become unclear or are drowned out by noise. Consequently, the calculated component content (e.g., crude protein) deviates greatly from the true value, and the magnitude of this deviation is unpredictable, leading to distorted test data. Moreover, the core purpose of the entire sample preparation process (crushing, separating, etc.)—from several kilograms of initial large sample to a few grams of final sample for testing—is to ensure that the final few grams or hundreds of grams of powder fully represent the average composition of the entire batch of soybean meal. However, in existing methods, relying solely on mixing samples taken from different locations during crushing and separating results in insufficient mixing. Consequently, the final sample often fails to fully represent the average composition of the entire batch of soybean meal, leading to inaccurate test data. Summary of the Invention

[0005] The purpose of this invention is to provide an online soybean meal sample preparation and testing device to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention provides an online soybean meal sample preparation and testing device, comprising: The outer cabinet is installed vertically. A pulverizer is installed inside the outer cabinet and positioned high up; the pulverizer is used to thoroughly pulverize the soybean meal sample. A feeding hopper is installed on the top surface of the outer cabinet and extends into the outer cabinet. The discharge end of the feeding hopper is connected to the inlet of the crusher through an electrically controlled valve. The cold mixing section is located inside the outer cabinet and connected to the outlet of the pulverizer. The cold mixing section is used to receive the soybean meal pulverized by the pulverizer, and the cold mixing section can cause the soybean meal sample to tumble violently and cool the soybean meal sample rapidly. The sample holding mechanism is located inside the outer cabinet, and the lower end of the cold mixing unit is inserted into the sample holding mechanism. The sample holding mechanism, the cold mixing unit and the pulverizer are arranged from bottom to top. The sample holding mechanism is used to fill soybean meal samples, and the sample holding mechanism can cause the soybean meal samples to vibrate at high frequency so that the soybean meal samples are automatically arranged in the sample holding mechanism. The testing mechanism is located inside the outer cabinet and is capable of compacting the soybean meal sample in the sample holding mechanism before data testing.

[0007] Furthermore, the cold mixing section includes: A receiving dish, which corresponds to the outlet of the crusher; A valve, which is vertically installed at the bottom of the receiving dish, is used to open or close the outlet at the bottom of the receiving dish; A discharge pipe, which is connected to the valve; A handle-type fastener is installed on the outer side of the receiving dish and slides backward on the inner side wall of the outer cabinet. An impact cylinder is vertically installed inside the outer cabinet, and its output shaft is connected to the handle fixing component.

[0008] Furthermore, the cold mixing section also includes: Two side platforms are respectively installed on both sides of the handle-type fixing member; Two lifting plates are respectively rotatably mounted on opposite sides of the receiving dish, and the two lifting plates are inserted into the receiving dish; Two first electric cylinders are respectively mounted on the two side platforms, and the output shafts of the two first electric cylinders are respectively hinged to the tails of the two lifting plates located outside the receiving dish.

[0009] Furthermore, the cold mixing section also includes: Two inlet channels, each of which connects to the receiving dish from both sides; Two air pipes, one end of which is connected to the two internal channels respectively, and the other end is connected to the air outlet of the cooling fan installed in the outer cabinet.

[0010] Furthermore, the sample holding mechanism includes: Rails, which are installed on the inner bottom surface of the outer cabinet; A platform, which is slidably mounted on the rail; A spring, which is mounted on the platform; A positioning frame, which is mounted on the spring; A sample cup, which is held in place within the positioning frame; A pneumatic vibrator, which is mounted on the side of the positioning frame; Pipe rack, which is installed inside the outer cabinet; A connecting pipe is installed on the pipe rack, with its upper end encircling the discharge pipe and its lower end close to the sample cup from directly above. The second electric cylinder is located inside the outer cabinet, and its output shaft is connected to the side of the platform.

[0011] Furthermore, the testing institution includes: The third electric cylinder is installed upside down on the inner side wall of the outer cabinet; The rear seat plate is connected to the output shaft of the third electric cylinder; Detector, the detector being mounted on the rear seat plate; A high-transparency shield is mounted on the lens of the detector. The high-transparency shield is on the same plane as the axis of the sample cup, and the diameter of the high-transparency shield matches the inner diameter of the sample cup.

[0012] Furthermore, the cold mixing section also includes: Two sets of cooling pipes are arranged in a continuous bend within the portions of the two lifting plates inserted into the receiving dish. The two sets of cooling pipes are connected to a cold source outside the outer cabinet.

[0013] Furthermore, the cold mixing section also includes: An elastic element is installed between the top of the receiving dish and the outlet of the crusher, and the interior of the elastic element is a funnel-shaped feeding channel.

[0014] Furthermore, the two inlet channels extend obliquely downwards into the receiving dish, and the outlets of the two inlet channels are recessed within the side wall of the receiving dish.

[0015] Furthermore, the rim of the sample cup can be used to scrape the high-transparency cover.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This online soybean meal sample preparation and testing equipment uses a cold mixing section to catch all the soybean meal samples after they have been pulverized. Through vigorous and rapid up-and-down motion, the sample is violently agitated, promoting thorough mixing and ensuring that the final sample taken from different points is highly mixed. This guarantees that the final sample fully represents the average composition of the entire batch of soybean meal, ensuring accurate test data. The cold mixing section simultaneously cools and retains moisture in the sample, preserving its moisture content and preventing clumping that could affect the test results. It also rapidly cools the freshly pulverized soybean meal sample to a suitable temperature, preventing overheating after mechanical pulverization. The accuracy of the test data is affected by the combination of the sample holding mechanism and the cold mixing section. The sample holding mechanism can complete the final loading of the sample to be tested. The sample holding mechanism can promote the automatic arrangement of the sample through high-frequency small amplitude vibration, so that the sample is densely packed and the internal air is expelled, completely eliminating gaps. This ensures the standardization of the sample density and ensures that a bubble-free, highly dense standard sample is obtained. This effectively prevents the final testing process from being affected and ensures the validity and accuracy of the test data. The testing mechanism can compact the sample again by applying appropriate pressure, thereby further ensuring the sample density and the consistency of the sample surface state. This fundamentally eliminates spectral errors caused by poor sample physical state and further ensures the authority and accuracy of the test data. This online soybean meal sample preparation and testing equipment centralizes all the processing and preparation of samples after sampling to the testing terminal on the outer cabinet. All the above processes are completed inside the outer cabinet and are carried out in close coordination and sequential order. There is no need for manual transfer of samples multiple times, which not only greatly shortens the testing time, but also avoids the risk of cross-contamination and external contamination caused by multiple transfers, thus preventing the distortion of test data from the source. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 A perspective view of the present invention is shown; Figure 2 A second perspective view of the present invention is shown; Figure 3 A third perspective view of the present invention is shown; Figure 4 A fourth perspective view of the present invention is shown; Figure 5 A fifth perspective view of the present invention is shown; Figure 6 A sixth perspective view of the present invention is shown; Figure 7 The present invention is shown. Figure 3Enlarged view of point A; Figure 8 The present invention is shown. Figure 4 Enlarged view of point B; Figure 9 The present invention is shown. Figure 5 Enlarged view of point C; Figure 10 The present invention is shown. Figure 5 Enlarged view of point D; Figure 11 The present invention is shown. Figure 6 Enlarged view of point E; Figure 12 The diagram shows the posture of the detection mechanism of the present invention under another detection method.

[0019] In the figure, the same reference numerals represent the same structural element, wherein: 1. Outer cabinet; 2. Crusher; 21. Electrically controlled valve; 3. Feed hopper; 4. Cold mixing section; 41. Receiving dish; 42. Valve; 43. Feed pipe; 44. Handle-type fixing component; 45. Impact cylinder; 46. Side platform; 47. Tilter; 48. First electric cylinder; 49. Inner passage; 491. Air pipe; 492. Cooling pipe; 493. Elastic component; 5. Sample holding mechanism; 51. Rail; 52. Platform; 53. Spring; 54. Positioning frame; 55. Sample cup; 56. Pneumatic vibrator; 57. Pipe rack; 58. Connecting pipe; 59. Second electric cylinder; 6. Detection mechanism; 61. Third electric cylinder; 62. Rear seat plate; 63. Detector; 64. High-transparency cover. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0021] Example 1: like Figure 1-11 As shown, an online sample preparation and testing device for soybean meal includes: Outer cabinet 1, wherein the outer cabinet 1 is installed vertically; Crusher 2 is installed inside the outer cabinet 1 and positioned high up. Crusher 2 is used to fully crush soybean meal samples. A feeding hopper 3 is installed on the top surface of the outer cabinet 1 and extends into the outer cabinet 1. The discharge end of the feeding hopper 3 is connected to the inlet of the crusher 2 via an electrically controlled valve 21. The sample is placed into the feeding hopper 3, and the speed of sample release is controlled by the feeding hopper 3 to allow the sample to enter the crusher 2 below. The crusher 2 thoroughly crushes the sample. To ensure the representativeness of the sample, samples are usually taken from multiple locations in a batch. The sample is cut off by the electrically controlled valve 21. The cold mixing section 4 is located inside the outer cabinet 1 and connected to the outlet of the crusher 2. The cold mixing section 4 is used to receive the soybean meal crushed by the crusher 2, and the cold mixing section 4 can cause the soybean meal sample to tumble violently and dry the soybean meal sample by heating. The sample holding mechanism 5 is located inside the outer cabinet 1, and the lower end of the cold mixing unit 4 is inserted into the sample holding mechanism 5. The sample holding mechanism 5, the cold mixing unit 4 and the crusher 2 are arranged from bottom to top. The sample holding mechanism 5 is used to fill soybean meal samples, and the sample holding mechanism 5 can cause the soybean meal samples to vibrate at high frequency so that the soybean meal samples are automatically arranged in the sample holding mechanism 5. The testing unit 6 is located inside the outer cabinet 1. The testing unit 6 can compact the soybean meal sample in the sample holding mechanism 5 before data testing. This online soybean meal sample preparation and testing equipment, through the cold mixing unit 4, can collect all the soybean meal sample crushed by the grinder 2. It also uses vigorous and rapid up-and-down movement to violently agitate the soybean meal sample, promoting deep mixing and ensuring that the samples taken from different points are highly mixed. This guarantees that the final sample being tested fully represents the average composition of the entire batch of soybean meal, ensuring the accuracy of the test data. The cold mixing unit 4 can simultaneously cool and retain moisture in the sample while mixing it, ensuring that the sample's moisture content remains constant and preventing the sample from becoming viscous and clumping, which could affect the testing. It also rapidly cools the freshly crushed soybean meal sample. The temperature is lowered to a suitable value to avoid affecting the accuracy of the test data due to excessive temperature after mechanical crushing. The sample holding mechanism 5 and the cold mixing unit 4 work together to complete the final loading of the sample to be tested. The sample holding mechanism 5 can promote the automatic arrangement of the sample through high-frequency small amplitude vibration, making the sample densely packed and expelling the internal air to completely eliminate gaps. This ensures the standardization of the sample density and ensures that a bubble-free, highly dense standard sample is obtained. This effectively prevents the final test process from being affected and ensures the validity and accuracy of the test data. The test mechanism 6 can compact the sample again by applying appropriate pressure, thereby further ensuring the sample density and the consistency of the sample surface state. This fundamentally eliminates spectral errors caused by poor sample physical state and further ensures the authority and accuracy of the test data. This online soybean meal sample preparation and testing equipment centralizes all the processing and preparation of samples after sampling to the testing terminal on the outer cabinet 1. All the above processes are completed within the outer cabinet 1 and are carried out in close coordination and sequential order. There is no need for manual transfer of samples multiple times, which not only greatly shortens the testing time, but also avoids the risk of cross-contamination and external contamination caused by multiple transfers, thus preventing the distortion of test data from the source.

[0022] Optionally, the cold mixing unit 4 includes: A receiving dish 41, which corresponds to the outlet of the crusher 2; Valve 42 is vertically installed at the bottom of the receiving dish 41 and is used to open or close the outlet at the bottom of the receiving dish 41. Material discharge pipe 43, which is connected to valve 42; Handle-type fastener 44 is installed on the outer side of the receiving dish 41 and slides backward on the inner side wall of the outer cabinet 1; An impact cylinder 45 is vertically installed inside the outer cabinet 1, and its output shaft is connected to the handle-type fixing member 44. As the crusher 2 continues to crush, the crushed soybean meal sample falls from the outlet of the crusher 2 into the receiving dish 41. After all the soybean meal samples taken in this batch are crushed, the impact cylinder 45 is activated. The impact cylinder 45 drives the receiving dish 41 to move up and down rapidly through the handle-type fixing member 44, thereby causing the soybean meal sample to continuously and violently tumble up and down in the receiving dish 41. During the tumbling process, the soybean meal samples are deeply mixed with each other, thus highly mixing the samples taken from different points, ensuring that the final sample for testing can fully represent the average composition of the entire batch of soybean meal, and ensuring the accuracy of the test data.

[0023] Optionally, the cold mixing unit 4 further includes: Two side platforms 46 are respectively installed on both sides of the handle-type fixing member 44; Two lifting plates 47 are respectively rotatably mounted on opposite sides of the receiving dish 41, and the two lifting plates 47 are inserted into the receiving dish 41. Two first electric cylinders 48 are respectively mounted on the two side platforms 46, and the output shafts of the two first electric cylinders 48 are respectively hinged to the tails of the two lifting plates 47 located outside the receiving dish 41. The two side platforms 46 move with the handle fixing member 44. When the impact cylinder 45 shakes the receiving dish 41 up and down, the two first electric cylinders 48 are also activated at the same time, pulling the tails of the two lifting plates 47 back and forth, causing the two lifting plates 47 to rotate around the rotating mounting point on the receiving dish 41. This causes the front parts of the two lifting plates 47 to swing up and down inside the receiving dish 41. At this time, the soybean meal sample is already tumbling up and down. With the addition of the stirring of the two lifting plates 47, the soybean meal sample can be further mixed, further ensuring that the samples taken from different points are highly mixed.

[0024] Optionally, the cold mixing unit 4 further includes: Two inlet channels 49 are respectively connected to the receiving dish 41 from both sides; Two air pipes 491 are connected at one end to the two internal inlet channels 49, and at the other end to the air outlet of the cooling fan located inside the outer cabinet 1. When the crusher 2 starts crushing, the cooling fan inside the outer cabinet 1 is turned on to blow low-temperature air. Then, the two air pipes 491 introduce the air into the two internal inlet channels 49 and send the air into the receiving dish 41 through the two internal inlet channels 49. This cools the soybean meal sample entering the receiving dish 41 and the crusher 2 in real time, so that the soybean meal sample is cooled and retains moisture, fully retaining the moisture content of the sample to ensure that the moisture content of the sample remains unchanged and to prevent the sample from becoming viscous and clumping, which would affect the test. At the same time, the soybean meal sample that has just been crushed is rapidly cooled to a suitable temperature, avoiding the impact of excessive temperature after mechanical crushing on the accuracy of the test data. When the soybean meal sample is turned up and down, it can better and more fully contact the low-temperature air, so that the soybean meal sample can be better cooled and retain moisture.

[0025] Optionally, the sample holding mechanism 5 includes: Rail 51, which is installed on the inner bottom surface of the outer cabinet 1; A platform 52 is slidably mounted on the rail 51. Spring 53, which is mounted on the platform 52; Positioning bracket 54, which is mounted on spring 53; Sample cup 55, which is held in the positioning frame 54; A pneumatic vibrator 56 is mounted on the side of the positioning frame 54; Pipe rack 57, which is installed inside the outer cabinet 1; Connector 58 is installed on the tube rack 57, with the upper end of the connector 58 encircling the discharge tube 43 and the lower end close to the sample cup 55 from directly above. The second electric cylinder 59 is located inside the outer cabinet 1. Its output shaft is connected to the side of the platform 52. When the receiving dish 41 moves up and down, the discharge pipe 43 repeatedly disengages from and inserts into the connecting pipe 58. After the mixing, cooling, and moisture retention of the soybean meal sample is completed, the discharge pipe 43 resets and re-inserts into the connecting pipe 58. Then, the valve 42 is opened, opening the outlet at the bottom of the receiving dish 41, allowing the soybean meal sample to flow through the valve 42 and discharge pipe 43 into the connecting pipe 58, finally falling into the sample cup 55, completing the sample filling. After the sample is filled, the pneumatic vibrator 56 is activated, generating a high-frequency, small-amplitude vibration force, which is transmitted to the sample cup 55 through the positioning frame 54. This causes the sample in the sample cup 55 to also undergo synchronous high-frequency, small-amplitude vibration, thereby promoting the sample... The automatic arrangement of samples ensures a dense sample packing while expelling internal air and eliminating gaps, thus ensuring standardized sample density and obtaining bubble-free, highly dense standard samples. This prevents changes in the scattering path and effective optical path of the detection light, which could cause severe, irregular drift and jitter in the spectral baseline. It also prevents characteristic absorption peaks representing key components such as protein and moisture from becoming unclear or being drowned out by noise, and prevents significant deviations between the calculated component content (such as crude protein) and the true value. This effectively prevents the final detection process from being affected and ensures the validity and accuracy of the detection data. Subsequently, the second electric cylinder 59 is driven to push the stage 52 forward along the rail 51. Then, the valve 42 is opened again, and another container is used below the connector 58 to collect and discharge all excess soybean meal sample from the receiving dish 41.

[0026] Optionally, the detection mechanism 6 includes: The third electric cylinder 61 is installed upside down on the inner side wall of the outer cabinet 1; The rear seat plate 62 is connected to the output shaft of the third electric cylinder 61; Detector 63, the detector 63 is mounted on the rear seat plate 62; A high-transparency cover 64 is mounted on the lens of the detector 63. The axis of the high-transparency cover 64 is on the same plane as the axis of the sample cup 55, and the diameter of the high-transparency cover 64 matches the inner diameter of the sample cup 55. After the sample cup 55 is pushed directly below the high-transparency cover 64 by the second electric cylinder 59, the third electric cylinder 61 is driven to push down the detector 63 and the high-transparency cover 64. The high-transparency cover 64 applies appropriate downward pressure to the sample in the sample cup 55, thereby compacting the sample again, further ensuring the sample density and the surface condition of the sample. Consistency is ensured to guarantee the flatness of the sample surface, fundamentally eliminating spectral errors caused by poor physical conditions of the sample, and further ensuring the authority and accuracy of the detection data; then, the high-transparency cover 64 is moved to a state of being in contact with the sample surface by the third electric cylinder 61, and then the detector 63 is activated to perform detection and obtain various data; the high-transparency cover 64 is a highly transparent cover, ensuring that it will not obstruct or affect the detection of the detector 63; the detector 63 can be a near-infrared spectrometer, a nitrogen analyzer, a Soxhlet extractor, etc., and the appropriate detector 63 is selected according to the specific data category that needs to be obtained.

[0027] Optionally, the cold mixing unit 4 further includes: Two sets of cooling pipes 492 are arranged in a continuous bend within the portions of the two lifting plates 47 inserted into the receiving dish 41. The two sets of cooling pipes 492 are connected to a cold source outside the outer cabinet 1. When the two lifting plates 47 begin to agitate, the cold source connected to the two sets of cooling pipes 492 is activated, initiating cooling and supplying cold air into the two sets of cooling pipes 492. The two sets of cooling pipes 492 then transfer low-temperature energy to the two lifting plates 47, causing them to cool down. This utilizes the two lifting plates 47, which are in direct contact with the soybean meal sample, to cool and retain moisture in the sample. This, combined with the low-temperature air blown into the receiving dish 41, further cools the soybean meal sample. This also adds an extra layer of protection, preventing uneven cooling caused by insufficient diffusion of the low-temperature air into the receiving dish 41, ensuring adequate cooling and moisture retention of the sample, accelerating the cooling speed, and improving processing efficiency.

[0028] Optionally, the cold mixing unit 4 further includes: The elastic element 493 is installed between the top of the receiving dish 41 and the outlet of the crusher 2. The interior of the elastic element 493 is a funnel-shaped feeding channel. The elastic element 493 seals the outlet of the crusher 2 and the receiving dish 41. When the receiving dish 41 moves up and down, the elastic element 493 deforms, which can also maintain the seal between the outlet of the crusher 2 and the receiving dish 41. This effectively prevents the soybean meal sample from spilling out when it enters the receiving dish 41 from the outlet of the crusher 2, or from being spilled out when the soybean meal is tumbling up and down in the receiving dish 41, or from the low-temperature air used for cooling and water retention leaking out from the outlet of the crusher 2 and the receiving dish 41, which would greatly reduce the cooling and water retention effect and efficiency.

[0029] Optionally, the two inlet channels 49 are inclined downward into the receiving dish 41, and the outlets of the two inlet channels 49 are embedded in the side wall of the receiving dish 41, thereby preventing soybean meal samples from entering the two inlet channels 49 and affecting the blowing out of dry hot air, and especially preventing soybean meal samples from staying in the two inlet channels 49 and causing subsequent cleaning difficulties.

[0030] Optionally, the rim of the sample cup 55 can scrape the high-transparency cover 64. After the sample inside the sample cup 55 is pressed down using the high-transparency cover 64, the high-transparency cover 64 is raised to a height level with the rim of the sample cup 55 by the third electric cylinder 61. Then, the sample cup 55 is pushed forward or pulled back by the second electric cylinder 59, and the rim of the sample cup 55 is used to scrape the lower surface of the high-transparency cover 64 to wipe the high-transparency cover 64. After that, the detection is performed. If there is soybean meal on the high-transparency cover 64, it can be scraped off to prevent the soybean meal on the high-transparency cover 64 from affecting the light or vision of the detector 63, thus effectively preventing any impact on the detection.

[0031] Example 2: To facilitate testing, a sample distribution tube can be installed on the frame of the outer cabinet 1. The sample distribution tube is connected to an upper rotary valve and a pneumatic insert. The upper rotary valve is connected to a grinder 2, and a buffer hopper is connected below the grinder 2. An online monitoring instrument is installed on the buffer hopper, which has an overflow port. A lower rotary valve is connected to the bottom of the buffer hopper, which is equipped with a cooling sleeve. Specifically, the soybean meal sample is placed in the sample distribution tube and fed into the grinder 2 through the upper rotary valve. After grinding, the soybean meal sample enters the buffer hopper, which contains an inclined plate. The soybean meal sample falls directly onto the inclined plate, slowing the flow rate and reducing the sample density per unit area. The particle size and density of the product can be improved, allowing the online monitoring instrument on the other side to perform better detection. After the online monitoring instrument detects the indicators of the soybean meal sample, the sample is discharged through the lower rotary valve. At the same time, when the sample enters the buffer hopper, it is rapidly cooled by the cooling sleeve to ensure that it is tested at a suitable temperature. During the testing process, the flow rate of the sample is controlled by the rotation speed of the upper and lower rotary valves to ensure that the sample in the buffer hopper is always full and flowing for the online monitoring instrument to irradiate and detect. Excess sample is discharged through the overflow port located above the inclined plate on the buffer hopper to ensure that no material blockage occurs. Two upper rotary valves can be installed, both connected to the sample tube. Both upper rotary valves are connected to the pulverizer 2. In this way, one upper rotary valve and one pulverizer 2 are in use, and the other is on standby. Even if one of them fails and needs to be repaired, the machine can continue to be used without stopping the machine, thus avoiding interruption of the test.

[0032] Optional, such as Figure 12 As shown, the detector 63 is installed on the inner wall of the receiving dish 41. When the sample falls into the receiving dish 41, and when the sample is released after the mixing, cooling and water retention treatment of the soybean meal sample is completed, the valve 42 is opened to release the sample. The detector 63 can detect the flowing soybean meal sample to achieve continuous detection. This is another detection method.

[0033] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An online sample preparation and testing device for soybean meal, characterized in that, include: Outer cabinet (1), the outer cabinet (1) is set vertically; Crusher (2), the crusher (2) is installed inside the outer cabinet (1) and positioned at the top, the crusher (2) is used to fully crush the soybean meal sample; The feeding hopper (3) is installed on the top surface of the outer cabinet (1) and enters the outer cabinet (1). The discharge end of the feeding hopper (3) is connected to the inlet of the crusher (2) through an electrically controlled valve (21). The cold mixing section (4) is located inside the outer cabinet (1) and connected to the outlet of the crusher (2). The cold mixing section (4) is used to receive the soybean meal crushed by the crusher (2), and the cold mixing section (4) can cause the soybean meal sample to tumble violently and cool the soybean meal sample rapidly. The sample holding mechanism (5) is located inside the outer cabinet (1), and the lower end of the cold mixing part (4) is inserted into the sample holding mechanism (5). The sample holding mechanism (5), the cold mixing part (4) and the crusher (2) are arranged from bottom to top. The sample holding mechanism (5) is used to fill soybean meal samples, and the sample holding mechanism (5) can cause the soybean meal samples to vibrate at high frequency so that the soybean meal samples are automatically arranged in the sample holding mechanism (5). The testing mechanism (6) is located inside the outer cabinet (1). The testing mechanism (6) can compress the soybean meal sample in the sample holding mechanism (5) before conducting data testing.

2. The online soybean meal sample preparation and testing equipment as described in claim 1, characterized in that, The cold mixing section (4) includes: A receiving dish (41) is provided, which corresponds to the outlet of the crusher (2). A valve (42) is vertically installed at the bottom of the receiving dish (41), and the valve (42) is used to open or close the outlet at the bottom of the receiving dish (41); The material discharge pipe (43) is connected to the valve (42); A handle-type fastener (44) is installed on the outer side of the receiving dish (41) and slides backward on the inner side wall of the outer cabinet (1); Impact cylinder (45) is vertically installed inside the outer cabinet (1), and its output shaft is connected to the handle fixing member (44).

3. The online soybean meal sample preparation and testing equipment as described in claim 2, characterized in that, The cold mixing section (4) further includes: Two side platforms (46) are respectively installed on both sides of the handle-type fixing member (44); Two lifting plates (47) are respectively rotatably mounted on opposite sides of the receiving dish (41) and the two lifting plates (47) are inserted into the receiving dish (41); Two first electric cylinders (48) are respectively mounted on two side platforms (46), and the output shafts of the two first electric cylinders (48) are respectively hinged to the tail of the two lifting plates (47) located outside the receiving dish (41).

4. The online soybean meal sample preparation and testing equipment as described in claim 3, characterized in that, The cold mixing section (4) further includes: Two inlet channels (49) are connected to the receiving dish (41) from both sides respectively. Two air pipes (491), one end of each of the two air pipes (491) is connected to the two inner passages (49), and the other end is connected to the air outlet of the cooling fan installed in the outer cabinet (1).

5. The online soybean meal sample preparation and testing equipment as described in claim 4, characterized in that, The sample holding mechanism (5) includes: Rail (51), said rail (51) is installed on the inner bottom surface of said outer cabinet (1); A platform (52) is slidably mounted on the rail (51); A spring (53) is mounted on the platform (52); Positioning bracket (54), which is mounted on the spring (53); The sample cup (55) is placed inside the positioning frame (54); A pneumatic vibrator (56) is mounted on the side of the positioning frame (54); Pipe rack (57), the pipe rack (57) is installed inside the outer cabinet (1); Connector (58), the connector (58) is installed on the tube rack (57), and the upper end of the connector (58) wraps around the discharge tube (43) and the lower end is close to the sample cup (55) from directly above. The second electric cylinder (59) is located inside the outer cabinet (1), and the output shaft of the second electric cylinder (59) is connected to the side of the platform (52).

6. The online soybean meal sample preparation and testing equipment as described in claim 5, characterized in that, The testing organization (6) includes: The third electric cylinder (61) is installed upside down on the inner side wall of the outer cabinet (1); The rear seat plate (62) is connected to the output shaft of the third electric cylinder (61); Detector (63), the detector (63) is mounted on the rear seat plate (62); A high-transparency shield (64) is mounted on the lens of the detector (63). The high-transparency shield (64) is on the same plane as the axis of the sample cup (55), and the diameter of the high-transparency shield (64) matches the inner diameter of the sample cup (55).

7. The online soybean meal sample preparation and testing equipment as described in claim 6, characterized in that, The cold mixing section (4) further includes: Two sets of cooling pipes (492) are arranged in a continuous bend within the portion of the two lifting plates (47) inserted into the receiving dish (41). The two sets of cooling pipes (492) are connected to the cold source outside the outer cabinet (1).

8. The online soybean meal sample preparation and testing equipment as described in claim 7, characterized in that, The cold mixing section (4) further includes: An elastic element (493) is installed between the top of the receiving dish (41) and the outlet of the crusher (2), and the interior of the elastic element (493) is a funnel-shaped feeding channel.

9. The online soybean meal sample preparation and testing equipment as described in claim 8, characterized in that, The two inlet channels (49) are obliquely downward into the receiving dish (41), and the outlets of the two inlet channels (49) are embedded in the side wall of the receiving dish (41).

10. The online soybean meal sample preparation and testing equipment as described in claim 9, characterized in that, The rim of the sample cup (55) can scrape the high-transparency cover (64).

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