Grain analyzer

Abstract

The utility model relates to a grain analyzer which comprises a shell, an adjusting box, a light source module, a light receiving module and rollers, the shell is provided with a feed port and a discharge port, a first chamber, a second chamber and a third chamber are arranged in the shell, the first chamber and the second chamber are sequentially arranged in the horizontal direction, and the third chamber is arranged in the adjusting box. The second chamber comprises a partition plate used for separating the first chamber and the second chamber, and the partition plate is provided with a first window. The adjusting box is horizontally and movably arranged in the first cavity and comprises an adjusting plate with a second window, a sample channel is formed between the adjusting plate and the partition plate, the adjusting box moves to increase or decrease the width of the sample channel, and the feeding port, the sample channel, the third cavity and the discharging port are sequentially communicated from top to bottom. The light source module is used for providing light which sequentially passes through the second window, the sample channel and the first window. The light receiving module is located in the second cavity and faces the first window so as to receive the light passing through the first window. The roller is rotatably arranged in the third chamber.

Description

Technical Field

[0001] This utility model relates to the field of near-infrared spectroscopy measurement technology, and more specifically, to a grain analyzer. Background Technology

[0002] A near-infrared grain analyzer is an instrument that uses near-infrared spectroscopy to analyze the composition of grains. It mainly consists of a light source module, a sample chamber, and a light receiving module. The light source module emits near-infrared light, which passes through the grain sample in the sample chamber and is collected by the light receiving module. Finally, the composition of the grain is determined by analyzing the spectral characteristics collected by the light receiving module.

[0003] Due to differences in size, shape, and density among different grain samples, the required light transmission distance varies when measuring different grain samples. To achieve component analysis of different grains, a grain analysis device has been disclosed in related technologies. This device features a movable optical path baffle located between two opposite side walls of the sample chamber, forming a sample channel with one of the side walls for the grain to be tested. The device also includes a motor that drives the optical path baffle to move back and forth, changing the width of the sample channel. This allows the grain analysis device to be adapted for measuring different types of grains. However, grains can easily get stuck between the optical path baffle and the other side wall, hindering the movement of the baffle. Furthermore, manual cleaning is required after each use to prevent grain retention from affecting subsequent tests, thus impacting detection efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a grain analyzer that solves the technical problem of reducing grain congestion in order to improve detection efficiency.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution.

[0006] This utility model provides a grain analyzer, comprising: a housing with an inlet and an outlet, and a first chamber, a second chamber, and a third chamber therein, the first chamber and the second chamber being arranged sequentially in a horizontal direction, the second chamber including a partition plate for separating the first chamber and the second chamber, the partition plate having a first viewing window; an adjustment box horizontally movably disposed in the first chamber, and including an adjustment plate with a second viewing window, a sample channel being formed between the adjustment plate and the partition plate, the adjustment box being movable to increase or decrease the width of the sample channel, and the inlet, sample channel, third chamber, and outlet being sequentially connected from top to bottom; a light source module for providing light that passes sequentially through the second viewing window, the sample channel, and the first viewing window; a light receiving module located in the second chamber, facing the first viewing window, to receive light passing through the first viewing window; and rollers rotatably disposed in the third chamber.

[0007] In some embodiments of this application, the sample channel includes a first sample channel and a second sample channel. The first sample channel tapers from top to bottom. The flared end of the first sample channel is connected to the feed port, and the constricted end of the first sample channel is connected to the second sample channel. The second sample channel is connected to the third chamber and has the same width. The partition plate is arranged vertically. The adjusting plate includes a first part and a second part connected to each other. The first part is arranged at an angle and forms the first sample channel with the partition plate. The second part is arranged vertically and forms the second sample channel with the partition plate. The second part has a second viewing window.

[0008] In some embodiments of this application, the adjustment box is provided with a receiving cavity, the receiving cavity extends through the opposite sides of the adjustment box in the horizontal direction, and a second viewing window is embedded at one end of the receiving cavity; the light source module includes a light source assembly and a lens assembly connected to each other, the light source assembly is fixed on the housing, the lens assembly is located in the first cavity and extends into the receiving cavity from the other end of the receiving cavity.

[0009] In some embodiments of this application, the housing is provided with a guide rail and a guide hole extending along the horizontal movement direction of the regulating box; the grain analyzer further includes a connector, a guide rod and a regulating box drive, the connector is slidably engaged with the guide rail, the guide rod passes through the guide hole and is connected to the regulating box and the connector respectively, and the regulating box drive is used to drive the connector to slide along the guide rail and to move the guide rod along the guide hole, so as to drive the regulating box to move horizontally in the first chamber.

[0010] In some embodiments of this application, the grain analyzer further includes a baffle, a rack, and a rack drive. The baffle is connected to the rack and is horizontally movable on the housing. The output end of the rack drive is fixed with a gear that meshes with the rack. The rack drive is used to drive the gear to rotate and cause the rack to drive the baffle to move horizontally, thereby increasing or decreasing the width of the feed inlet.

[0011] In some embodiments of this application, the grain analyzer further includes a roller drive, a rotary encoder, a baffle, and a position sensor. The roller drive is connected to the rotary encoder and is used to drive the roller to rotate in the third chamber. The baffle is disposed in the third chamber and is also provided with the position sensor.

[0012] In some embodiments of this application, the roller is provided with a plurality of fins evenly spaced along its circumference. The roller has an initial state and a rotating state. The baffle includes a first baffle and a second baffle. In the initial state, one of the two adjacent fins is blocked below the first baffle, and the horizontal gap between the other fin and the third chamber is blocked by the second baffle.

[0013] In some embodiments of this application, the housing includes a body and a first fixing seat and a second fixing seat arranged sequentially in the horizontal direction; the first fixing seat includes a support plate and a first arc-shaped plate connected in an L-shape, the support plate being used to support the lower part of the adjusting box; the second fixing seat includes the partition plate and the second arc-shaped plate connected together, the second arc-shaped plate being located below the partition plate and opposite to the first arc-shaped plate, and the second fixing seat having a second chamber; the first chamber is formed between the partition plate, the support plate, and the inner wall of the body opposite to the partition plate; the third chamber is formed between the first arc-shaped plate and the second arc-shaped plate.

[0014] In some embodiments of this application, the housing further includes a feed hopper, the feed hopper having the feed inlet, and the feed hopper also having a sensor for detecting the feed inlet.

[0015] As can be seen from the above technical solution, the embodiments of this utility model have at least the following advantages and positive effects:

[0016] In the grain analyzer of this embodiment, the grain to be tested is fed into the housing through the inlet and falls into the sample channel between the adjusting plate and the partition plate. The light provided by the light source module passes through the second window, through the grain to be tested in the sample channel, and is received by the light receiving module through the first window, thereby realizing the detection of the grain to be tested. Furthermore, by adjusting the horizontal movement of the adjusting box, the relative position of the adjusting plate and the partition plate is changed, thereby realizing the dynamic adjustment of the width of the sample channel, so that the grain analyzer can be compatible with the detection of grains of different particle sizes and types. Finally, the detected grain is uniformly discharged to the outlet by the roller in the third chamber, so that the sample channel can be emptied. This grain analyzer uses a box-type adjustable box to move horizontally within the first chamber, thereby adjusting the relative position of the adjusting plate and the partition plate to change the sample channel width. A vertically connected path is formed between the inlet, sample channel, third chamber, and outlet. The grains fall naturally under gravity, preventing them from accumulating on the horizontal path. This avoids the grain jamming that can occur with movable optical path baffles in the sample chamber, reducing the need for manual cleaning and improving detection efficiency. Attached Figure Description

[0017] The various objectives, features, and advantages of this invention will become more apparent from the following detailed description of preferred embodiments in conjunction with the accompanying drawings. The drawings are merely illustrative illustrations of the invention and are not necessarily drawn to scale. In the drawings, the same reference numerals always denote the same or similar parts. Wherein:

[0018] Figure 1 This is a schematic diagram of a grain analyzer according to an exemplary embodiment.

[0019] Figure 2 yes Figure 1 A sectional view.

[0020] Figure 3 yes Figure 2 A structural diagram in another state.

[0021] Figure 4 yes Figure 1 A structural diagram from another perspective.

[0022] Figure 5 yes Figure 1 A schematic diagram of the decomposed structure in the image.

[0023] Figure 6 yes Figure 5 A structural diagram from another perspective.

[0024] The annotations in the attached figures are explained as follows:

[0025] 1. Housing; 11. Body; 111. Discharge port; 112. Guide rail; 113. Guide hole; 12. First fixed seat; 121. Support plate; 122. First arc-shaped plate; 13. Second fixed seat; 131. Divider plate; 1311. First viewing window; 132. Second arc-shaped plate; 14. Feed hopper; 141. Feed inlet; 142. Sensor; 15. First chamber; 16. Second chamber; 17. Third chamber;

[0026] 2. Adjustment box; 21. Adjustment plate; 211. First part; 212. Second part; 22. Second viewing window; 23. Receiving cavity; 24. Sample channel; 241. First sample channel; 242. Second sample channel;

[0027] 3. Light source module; 31. Light source assembly; 32. Lens assembly;

[0028] 4. Light receiving module;

[0029] 5. Roller; 51. Fin;

[0030] 6. Connectors;

[0031] 7. Regulating box drive components;

[0032] 8. Baffle;

[0033] 9. Gear rack;

[0034] 10. Rack and pinion drive; 101. Gear;

[0035] 20. Roller drive components;

[0036] 30. Rotary encoder;

[0037] 40. Baffle plate; 401. First baffle plate; 402. Second baffle plate;

[0038] 50. Receiving tray. Detailed Implementation

[0039] Although the present invention can be readily embodied in various forms, only some specific embodiments are shown in the accompanying drawings and will be described in detail in this specification. It is understood that this specification should be regarded as an exemplary illustration of the principles of the present invention and is not intended to limit the present invention to what is described herein.

[0040] Therefore, a feature pointed out in this specification is used to describe one feature of one embodiment of the present invention, and does not imply that every embodiment of the present invention must have the described feature. Furthermore, it should be noted that this specification describes many features. Although certain features may be combined to illustrate possible system designs, these features may also be used in other combinations not explicitly stated. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.

[0041] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various elements of this invention are relative rather than absolute. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the descriptions of the positions of these elements change, these directional indications also change accordingly.

[0042] Please see Figures 1 to 3 The grain analyzer provided in one embodiment of this utility model mainly includes a housing 1, an adjustment box 2, a light source module 3, a light receiving module 4, and rollers 5. The housing 1 has an inlet 141 and an outlet 111, and contains a first chamber 15, a second chamber 16, and a third chamber 17. The first chamber 15 and the second chamber 16 are arranged sequentially in the horizontal direction. The second chamber 16 includes a partition plate 131 for separating the first chamber 15 and the second chamber 16, and the partition plate 131 has a first viewing window 1311. The adjustment box 2 is horizontally movable in the first chamber 15 and includes an adjustment plate 21 with a second viewing window 22. A sample channel 24 is formed between the adjustment plate 21 and the partition plate 131. The adjustment box 2 can be moved to increase or decrease the width of the sample channel 24, and the inlet 141, the sample channel 24, the third chamber 17, and the outlet 111 are connected sequentially from top to bottom. The light source module 3 provides light that passes sequentially through the second viewing window 22, the sample channel 24, and the first viewing window 1311. The light receiving module 4 is located in the second chamber 16, facing the first viewing window 1311, to receive the light passing through the first viewing window 1311. The roller 5 is located in the third chamber 17.

[0043] In the grain analyzer of this embodiment, the grain to be tested is fed into the housing 1 through the feed inlet 141 and falls into the sample channel 24 between the adjusting plate 21 and the partition plate 131. The light provided by the light source module 3 passes through the second window 22, through the grain to be tested in the sample channel 24, and is received by the light receiving module 4 through the first window 1311, thereby realizing the detection of the grain to be tested. Furthermore, by adjusting the horizontal movement of the adjusting box 2, the relative position of the adjusting plate 21 and the partition plate 131 is changed, thereby realizing the dynamic adjustment of the width of the sample channel 24, so that the grain analyzer can be compatible with the detection of grains of different particle sizes and types. Finally, the detected grain is uniformly discharged to the discharge port 111 by the roller 5 in the third chamber 17, so that the sample channel 24 can be emptied. The grain analyzer adjusts the relative position of the adjustment plate 21 and the partition plate 131 by moving the entire box-type adjustment box 2 horizontally within the first chamber 15, thereby changing the width of the sample channel 24. A vertical connection path is formed between the feed inlet 141, the sample channel 24, the third chamber 17, and the discharge outlet 111. The grains fall naturally under the action of gravity, making it less likely for the grains to accumulate on the moving horizontal path. This avoids the grain jamming phenomenon that may occur when a movable optical path baffle 8 is installed in the sample chamber in related technologies, reducing the need for manual cleaning and improving detection efficiency.

[0044] Please see Figure 2 and Figure 3 In a specific embodiment, the sample channel 24 includes a first sample channel 241 and a second sample channel 242. The first sample channel 241 tapers from top to bottom. The flared end of the first sample channel 241 is connected to the feed inlet 141, and the constricted end of the first sample channel 241 is connected to the second sample channel 242. The second sample channel 242 is connected to the third chamber 17 and has a uniform width. The partition plate 131 is arranged vertically. The adjusting plate 21 includes a first part 211 and a second part 212 connected to each other. The first part 211 is arranged at an angle and forms the first sample channel 241 between itself and the partition plate 131. The second part 212 is arranged vertically and forms the second sample channel 242 between itself and the partition plate 131. The second part 212 has a second viewing window 22.

[0045] The second part 212 of the adjusting plate 21 is arranged at an angle and forms a first sample channel 241 that gradually narrows from top to bottom with the vertical partition plate 131. The first sample channel 241 is used to guide the grain to be tested to slide down naturally along the inclined surface of the second part 212 under the action of gravity, so as to avoid the grain to be tested getting stuck near the feed inlet 141. The second sample channel 242 with equal width is used to ensure that the grain to be tested can be detected stably and accurately.

[0046] Please see Figure 2 , Figure 3 , Figure 5 and Figure 6 In a specific embodiment, the regulating box 2 is provided with a receiving cavity 23, which extends through the two opposite sides of the regulating box 2 in the horizontal direction, and a second viewing window 22 is embedded at one end of the receiving cavity 23. The light source module 3 includes a light source assembly 31 and a lens assembly 32 connected to each other. The light source assembly 31 is fixed on the housing 1, and the lens assembly 32 is located in the first chamber 15 and extends into the receiving cavity 23 from the other end. The light emitted by the light source assembly 31 passes through the lens assembly 32 to the second viewing window 22, and the lens assembly 32 extends into the cavity. This arrangement can reuse the internal space of the regulating box 2, making the overall structure more compact, and the receiving cavity can form a physical barrier for the lens assembly 32, reducing interference from dust, moisture and other factors.

[0047] In this embodiment, the lens assembly 32 is integrated inside the cylindrical tube, and the receiving cavity 23 is cylindrical. The receiving cavity 23 and the lens assembly 32 can form a guiding fit when the adjusting box 2 moves horizontally, thereby improving the stability of the overall structure.

[0048] Please see Figures 2 to 4 In a specific embodiment, the housing 1 is provided with a guide rail 112 and a guide hole 113 extending along the horizontal movement direction of the regulating box 2. The grain analyzer also includes a connector 6, a guide rod, and a regulating box drive 7. The connector 6 forms a sliding fit with the guide rail 112. The guide rod passes through the guide hole 113 and is connected to the regulating box 2 and the connector 6 respectively. The regulating box drive 7 is used to drive the connector 6 to slide along the guide rail 112 and to move the guide rod along the guide hole 113, thereby driving the regulating box 2 to move horizontally within the first chamber 15. The regulating box drive 7 is used to provide driving force. A double-layer guide fit can be formed between the connector 6 and the guide rail 112, and between the guide rod and the guide hole 113, thereby improving the accuracy and stability of the horizontal movement of the regulating box 2.

[0049] In this embodiment, the guide rail 112, the connector 6, and the adjustment box drive 7 are all located outside the housing 1, facilitating observation of its overall movement, and the adjustment box drive 7 effectively reduces the size requirements of the housing 1. In a further embodiment, the drive includes a motor and a lead screw connected together.

[0050] Please see Figure 5 and Figure 6In a specific embodiment, the grain analyzer further includes a baffle 8, a rack 9, and a rack drive 10. The baffle 8 is connected to the rack 9 and is horizontally movable on the housing 1. The output end of the rack drive 10 is fixed with a gear 101 that meshes with the rack 9. The rack drive 10 drives the gear 101 to rotate and causes the rack 9 to move the baffle 8 horizontally, thereby increasing or decreasing the width of the feed inlet 141. When the rack drive 10 is started, it drives the gear 101 at its output end to rotate. The gear 101 meshes with the rack 9 to convert the rotational motion into the linear motion of the rack 9, and drives the baffle 8 on the rack 9 to move horizontally. This allows for unobstructed, partially obstructed, and fully obstructed feeding inlet 141, thereby adjusting the width of the feeding inlet 141 and controlling the grain flow rate or screening accuracy. On the other hand, the baffle 8 can open the feed inlet 141 when feeding materials and close the feed inlet 141 when working. On the one hand, it can avoid the influence of external light on the detection, and on the other hand, it can prevent dust, water vapor and other substances from falling into the sample channel 24 from the feed inlet 141, thereby ensuring the normal operation of the detection and improving the detection accuracy.

[0051] Please see Figures 2 to 4 In a specific embodiment, the grain analyzer further includes a roller drive 20, a rotary encoder 30, a baffle 40, and a position sensor. The roller drive 20 is connected to the rotary encoder 30 and is used to drive the roller 5 to rotate within the third chamber 17. The baffle 40 is located within the third chamber 17 and is equipped with a position sensor. The roller drive 20 drives the roller 5 to rotate by a preset angle or number of revolutions. The rotary encoder 30 records the actual angle and number of revolutions of the roller drive 20. The position sensor on the baffle 40 records the actual position of the same fin 51 and the baffle 40, thereby recording the actual angle and number of revolutions of the roller 5. By comparing the data between the rotary encoder 30 and the position sensor and performing calibration, the volume of the grain to be tested can be accurately controlled each time it is fed, thus improving the measurement accuracy of the grain to be tested.

[0052] Please see Figure 2 , Figure 3 , Figure 5 and Figure 6In a specific embodiment, the roller 5 is provided with a plurality of fins 51 evenly spaced along its circumference. The roller 5 has an initial state and a rotating state. The baffle 40 includes a first baffle 401 and a second baffle 402. In the initial state, one of the two adjacent fins 51 is blocked below the first baffle 401, and the horizontal gap between the other fin 51 and the third chamber 17 is blocked by the second baffle 402. In the initial state, the grain is placed in the space formed by the two adjacent fins 51. The rotation of the roller 5 drives the fins 51 to rotate so that when the next fin 51 fills the gap, a fixed volume of grain can be released. Therefore, by adjusting the rotation angle or number of rotations of the roller 5, the volume of grain released from the discharge port 111 can be controlled more precisely. In the initial state, it can effectively prevent untested grain from falling directly from the discharge port 111, ensuring the smooth progress of the testing work.

[0053] In a specific embodiment, the housing 1 includes a body 11 and a first fixing seat 12 and a second fixing seat 13 arranged sequentially in the horizontal direction. The first fixing seat 12 includes a support plate 121 and a first arc-shaped plate 122 connected in an L-shape. The support plate 121 is used to support the adjustment box 2 below. The second fixing seat 13 includes a partition plate 131 and a second arc-shaped plate 132 connected to each other. The second arc-shaped plate 132 is located below the partition plate 131 and is arranged opposite to the first arc-shaped plate 122. A second chamber 16 is provided inside the second fixing seat 13. A first chamber 15 is formed between the partition plate 131, the support plate 121, and the inner wall of the body 11 opposite to the partition plate 131. A third chamber 17 is formed between the first arc-shaped plate 122 and the second arc-shaped plate 132. Through the cooperation between the body 11, the first fixing seat 12, and the second fixing seat 13, the division of the first chamber 15, the second chamber 16, and the third chamber 17 is formed inside the housing 1, providing a stable and reliable structural design for the housing 1.

[0054] Please see Figures 1 to 6 In a specific embodiment, the housing 1 further includes a feeding hopper 14, which has a feeding port 141, and a sensor 142 for detecting the feeding port 141 is also provided inside the feeding hopper 14. Grains are fed from the outside through the feeding port 141 of the feeding hopper 14, and the sensor 142 inside the feeding hopper 14 can monitor the feeding status in real time to determine whether the grain analyzer can start detection.

[0055] In this embodiment, the grain analyzer also includes a control system for receiving and outputting signal commands to control the aforementioned components to perform corresponding actions.

[0056] Please see Figures 1 to 6In the above embodiments, the grain analyzer also includes a receiving tray 50, which is located at the bottom of the housing 1 and is positioned opposite to the discharge port 111. After the grain has been tested, it is discharged from the discharge port 111, and the receiving tray 50 is used to receive and collect all the discharged material.

[0057] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A grain analyzer characterized by, include: The housing has an inlet and an outlet, and contains a first chamber, a second chamber and a third chamber. The first chamber and the second chamber are arranged sequentially in the horizontal direction. The second chamber includes a partition plate for separating the first chamber and the second chamber, and the partition plate has a first viewing window. An adjustment box is horizontally movable within the first chamber and includes an adjustment plate with a second viewing window. A sample channel is formed between the adjustment plate and the partition plate. The adjustment box can be moved to increase or decrease the width of the sample channel. The inlet, sample channel, third chamber, and outlet are connected sequentially from top to bottom. A light source module is used to provide light that passes sequentially through the second viewing window, the sample channel, and the first viewing window; A light-receiving module is located in the second cavity and faces the first window to receive light passing through the first window; The roller is rotatably disposed within the third chamber.

2. The grain analyzer of claim 1, wherein, The sample channel includes a first sample channel and a second sample channel. The first sample channel gradually narrows from top to bottom. The flared end of the first sample channel is connected to the feed port, and the narrowed end of the first sample channel is connected to the second sample channel. The second sample channel is connected to the third chamber and has the same width. The partition plate is arranged vertically, and the adjustment plate includes a first part and a second part connected to each other. The first part is arranged at an angle and forms a first sample channel with the partition plate. The second part is arranged vertically and forms a second sample channel with the partition plate. The second part has a second viewing window.

3. The grain analyzer of claim 1, wherein, The regulating box is provided with a receiving cavity, which extends through the two opposite sides of the regulating box in the horizontal direction, and the second viewing window is embedded at one end of the receiving cavity; The light source module includes a light source assembly and a lens assembly connected together. The light source assembly is fixed on the housing, and the lens assembly is located in the first cavity and extends into the cavity from the other end of the receiving cavity.

4. The grain analyzer of claim 1, wherein, The housing is provided with a guide rail and a guide hole extending along the horizontal movement direction of the adjustment box; The grain analyzer also includes a connector, a guide rod, and an adjustment box drive. The connector is slidably fitted with the guide rail. The guide rod passes through the guide hole and is connected to the adjustment box and the connector respectively. The adjustment box drive is used to drive the connector to slide along the guide rail and to move the guide rod along the guide hole, so as to drive the adjustment box to move horizontally in the first chamber.

5. The grain analyzer of claim 1, wherein, It also includes a baffle, a rack, and a rack drive. The baffle is connected to the rack and is horizontally movable on the housing. The output end of the rack drive is fixed with a gear that meshes with the rack. The rack drive is used to drive the gear to rotate and cause the rack to drive the baffle to move horizontally, thereby increasing or decreasing the width of the feed inlet.

6. The grain analyzer of claim 1, wherein, It also includes a roller drive, a rotary encoder, a baffle, and a position sensor. The roller drive is connected to the rotary encoder and is used to drive the roller to rotate in the third chamber. The baffle is disposed in the third chamber and is also provided with the position sensor.

7. The grain analyzer of claim 6, wherein, The roller is provided with a plurality of fins evenly spaced along its circumference. The roller has an initial state and a rotating state. The baffle includes a first baffle and a second baffle. In the initial state, one of the two adjacent fins is blocked below the first baffle, and the horizontal gap between the other fin and the third chamber is blocked by the second baffle.

8. The grain analyzer of claim 1, wherein, The housing includes a body and a first fixing seat and a second fixing seat arranged sequentially in the horizontal direction; The first fixed base includes a support plate and a first arc-shaped plate connected in an L-shape, the support plate being used to support the lower part of the adjustment box; The second fixing base includes the partition plate and the second arc plate connected to each other. The second arc plate is located below the partition plate and is disposed opposite to the first arc plate. The second fixing base is provided with the second chamber. The first chamber is formed between the partition plate, the support plate, and the inner wall of the body opposite to the partition plate; The third chamber is formed between the first arc-shaped plate and the second arc-shaped plate.

9. The grain analyzer of claim 1, wherein, The housing also includes a feed hopper, which has a feed inlet and a sensor for detecting the feed inlet is provided inside the feed hopper.

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