A device and method for detecting selenium content in selenium-enriched tea

Abstract

The present invention discloses a detection device and a detection method for the selenium content in selenium-rich tea leaves, which relate to the technical field of element detection and analysis. The device comprises a base, a collecting cylinder is provided at the upper end of the base, a processing cylinder is provided at the upper end of the collecting cylinder, and a pre-processing component is provided in the inner cavity of the processing cylinder, and the selenium-rich tea leaves in the processing cylinder are processed by the pre-processing component. The device and the detection method for the selenium content in selenium-rich tea leaves, when the telescopic part is started, push the entire cover plate to move, wherein the cover plate and the sleeve are connected by a telescopic plate, and the position of the sleeve can be adjusted by the telescopic part, and the turntable and the clamping cylinder provided on the sleeve are driven to move, so that the clamping cylinder is separated from the protrusion, and the turntable is restored to the initial position by the second elastic part, and the tea leaves in the processing cylinder are pushed back and forth to the middle, thereby reducing the accumulation of impurities at the edge of the processing cylinder, facilitating subsequent cleaning, and avoiding cross contamination between different samples.

Description

Technical Field

[0001] The present invention relates to element detection and analysis technology, and in particular to a device and method for detecting the selenium content in selenium-enriched tea. Background Art

[0002] Selenium (Se), an essential trace element for living organisms, possesses numerous physiological activities, including antioxidant, anti-aging, antibacterial, detoxifying, cancer prevention, and immunity enhancement. Studies have shown that selenium deficiency in the human body can lead to organ dysfunction, including Keshan disease, cardiovascular disease, and growth retardation. Tea, a plant with a strong selenium accumulation capacity and one of the world's three major beverages, possesses significant health benefits.

[0003] The Chinese invention patent with publication number CN118417215B discloses a multi-station detection device for selenium-rich food. The multi-station detection device for selenium-rich food drives the lifting rod and the shielding frame to move downward under the operation of the multi-stage electric telescopic rod, wherein the shielding frame is adsorbed on the edge of the corresponding station cavity through the magnetic surface, and the lifting rod at the bottom end of the multi-stage electric telescopic rod drives the brush block to continue to extend and slide into the station cavity, and the multi-stage electric telescopic rod is adsorbed on the metal bottom plate through the electromagnetic block, and then the motor It will start, and the motor will drive the brush block to rotate through the meshing of the active worm gear and the worm gear ring. The brush block will clean the inner wall of the work station cavity during the rotation. At the same time, the lifting rod will gradually move up in the shielding frame under the retraction of the multi-stage electric telescopic rod, so that the electromagnetic block will drive the metal bottom plate to slide up in the work station cavity. In this way, the work station cavity can not only be cleaned, but also the sticky residue can be brought out during the upward movement of the metal bottom plate, thereby realizing the cleaning of the sticky residue in the work station cavity.

[0004] After the existing equipment is used, some sticky residues will remain inside the workstation slot. These sticky residues are difficult to clean only by the horizontal blowing of the fan, resulting in cross-contamination between different samples during subsequent operations. Therefore, a detection device and method for the selenium content in selenium-rich tea have been developed to ensure the accuracy of selenium-rich tea detection. Summary of the Invention

[0005] The purpose of the present invention is to provide a device and method for detecting the selenium content in selenium-enriched tea leaves, so as to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above-mentioned object, the present invention provides the following technical solution: a device for detecting the selenium content in selenium-enriched tea leaves, comprising a base, a collecting cylinder being provided at the upper end of the base, a processing cylinder being provided at the upper end of the collecting cylinder, a pretreatment component being provided in the inner cavity of the processing cylinder, the selenium-enriched tea leaves in the processing cylinder being processed by the pretreatment component, and a docking block being provided at the upper end of the pretreatment component;

[0007] Support columns are provided on both sides of the upper end of the base, and positioning components are provided on the upper ends of the support columns, and the docking block is fixed by the positioning components;

[0008] The pre-treatment assembly includes a cover plate connected to the docking block, a sleeve is provided at the lower end of the cover plate, and a driving member is provided at the middle position of the lower end of the cover plate, and a driving shaft is provided at the output end of the driving member;

[0009] A turntable is rotatably mounted on the end of the sleeve, a clamping cylinder is provided on the upper end of the turntable, a second elastic member is sleeved on the outer surface of the clamping cylinder, an end of the second elastic member is connected to the end of the driving member, and the outer surface of the driving shaft is in contact with the outer surface of the clamping cylinder;

[0010] The outer surface of the turntable is rotatably mounted with multiple groups of moving rods, and the multiple groups of moving rods are evenly distributed on the outer surface of the turntable. The inner wall of the sleeve is provided with guide grooves corresponding to the moving rods. The inner wall of the guide groove is slidably mounted with a slider, and the end of the slider passes through and extends to the outside of the sleeve. At the same time, a scraper is provided at the end of the slider, and the inner wall of the treatment cylinder is scraped by the scraper;

[0011] A power rod is provided at the lower end of the driving shaft, a protective cylinder is rotatably installed on the outer surface of the power rod, a four-axis transmission part is provided in the inner cavity of the protective cylinder, and a rotating rod is provided on one side of the four-axis transmission part. A grinding plate is provided on the end of the four-axis transmission part away from the power rod, a spiral plate is rotatably installed on the lower end of the protective cylinder, and a plurality of extension plates are evenly provided on the end of the spiral plate, and the outer surface of the extension plate is in contact with the outer surface of the rotating rod.

[0012] As a further optimization solution of the present invention, a telescopic member is provided on the inner wall of the sleeve, and an output end of the telescopic member is connected to the cover plate.

[0013] As a further optimization solution of the present invention, the positioning assembly includes a fixed plate connected to the support column, a rotating shaft is rotatably mounted on the end of the fixed plate, and a rotating block is provided at the middle position of the outer surface of the rotating shaft.

[0014] As a further optimization solution of the present invention, first elastic members are sleeved on both ends of the outer surface of the rotating shaft, and the ends of the first elastic members are connected to the fixing plate.

[0015] As a further optimized solution of the present invention, a first push rod is rotatably mounted on one end of the rotating block, and a movable plate is rotatably mounted on the end of the first push rod.

[0016] As a further optimization solution of the present invention, limiting columns are provided at both ends of the movable plate, and the ends of the limiting columns pass through and extend to the outside of the fixed plate.

[0017] As a further optimization solution of the present invention, an adjustment block is provided at the end of the limiting column.

[0018] As a further optimization solution of the present invention, a second push rod is rotatably mounted on one end of the rotating block away from the first push rod, and an extrusion plate is provided at the end of the second push rod. The end of the extrusion plate passes through and extends to the outside of the fixed plate.

[0019] As a further optimization solution of the present invention, a pressing plate is provided at the end of the extrusion plate, and the pressing plate is located between the two limiting columns.

[0020] A method for detecting the selenium content in selenium-enriched tea leaves, using the device for detecting the selenium content in selenium-enriched tea leaves as described in any one of the above, the detection method comprising the following steps:

[0021] S1. Select a certain amount of selenium-rich tea leaves and pre-treat the selected selenium-rich tea leaves. The rotating rod rotates to drive the extension plate on the spiral plate to move, thereby driving the spiral plate to rotate, collecting the tea leaves located on the inner wall of the processing cylinder and transferring them to the lower end of the grinding plate, thereby processing the selenium-rich tea leaves.

[0022] S2. When the turntable rotates, it synchronously drives the moving rod to move. Since the end of the moving rod 35 is rotatably mounted with a slider, the slider is driven to move along the inner wall of the guide groove, and at the same time, the scraper provided at the end of the slider is driven to move toward the center or expand outward. The cross section of the scraper is arc-shaped, and the outer surface of the scraper is in contact with the inner wall of the processing cylinder, so that the tea leaves in contact can be transported to the grinding end.

[0023] S3. Use an atomic absorption spectrometer or ICP-MS instrument to test the treated selenium-rich tea leaves, analyze and process the test results through a data processing terminal, and output the specific value of the selenium content.

[0024] Compared with the prior art, the present invention provides a detection device and method for the selenium content in selenium-rich tea, which has the following beneficial effects: when the telescopic part is started, the entire cover plate is pushed to move, wherein the cover plate and the sleeve are connected by a telescopic plate, and the position of the sleeve can be adjusted by the telescopic part, and the turntable and the clamping cylinder arranged on the sleeve are driven to move, so that the clamping cylinder is separated from the protrusion, and the turntable is restored to its initial position by the second elastic part, and the tea leaves inside the processing cylinder are pushed back and forth to the middle, thereby reducing the accumulation of impurities on the edge of the processing cylinder, facilitating subsequent cleaning, and avoiding cross-contamination between different samples.

[0025] When the rotating block rotates, the second push rod is driven to move synchronously. Since an extrusion plate is rotatably installed on the end of the second push rod, the pressing plate is driven to move by the extrusion plate, so that the pressing plate and the adjusting block move synchronously, moving toward the middle or to both sides, which is convenient for disassembly and assembly of processed parts and makes cleaning of the equipment more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0027] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0028] Figure 2 A cross-sectional view of the overall internal structure provided by an embodiment of the present invention;

[0029] Figure 3 A schematic diagram of the positioning component structure provided by an embodiment of the present invention;

[0030] Figure 4 A first cross-sectional view of the internal structure of a positioning assembly provided by an embodiment of the present invention;

[0031] Figure 5 A second cross-sectional view of the internal structure of the positioning assembly provided by an embodiment of the present invention;

[0032] Figure 6 A schematic diagram of the structure of a preprocessing component provided in an embodiment of the present invention;

[0033] Figure 7 A first cross-sectional view of the internal structure of a pre-treatment component provided in an embodiment of the present invention;

[0034] Figure 8 A second cross-sectional view of the internal structure of the pretreatment component provided in an embodiment of the present invention;

[0035] Figure 9 for Figure 8 A magnified view of the structure in the middle;

[0036] Figure 10 A schematic diagram of the power rod structure provided by an embodiment of the present invention;

[0037] Figure 11 A cross-sectional view of the internal structure of the power rod provided in an embodiment of the present invention.

[0038] Description of reference numerals:

[0039] 1. Base; 2. Positioning assembly; 3. Pretreatment assembly; 11. Support column; 12. Collecting cylinder; 13. Processing cylinder; 14. Docking block; 21. Fixed plate; 22. Rotating shaft; 221. First elastic member; 23. Rotating block; 24. First push rod; 241. Movable plate; 25. Second push rod; 251. Extrusion plate; 26. Pressing plate; 27. Limiting column; 271. Adjusting block; 31. Cover plate; 311. Sleeve; 32. Driving member; 33. Driving shaft; 34. Turntable; 341. Second elastic member; 342. Clamping cylinder; 35. Moving rod; 36. Telescopic member; 37. Guide groove; 371. Slider; 372. Scraper; 38. Power rod; 381. Protective cylinder; 382. Four-axis transmission member; 383. Rotating rod; 384. Grinding plate; 39. Spiral plate; 391. Extension plate. DETAILED DESCRIPTION

[0040] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0041] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention. The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In addition, unless otherwise expressly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or integrally connected; they can be mechanically connected or electrically connected; they can be directly connected or indirectly connected through an intermediate medium, or they can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Example 1:

[0043] See also Figures 1-11 A device for detecting the selenium content in selenium-rich tea includes a base 1, a collecting cylinder 12 is provided at the upper end of the base 1, a processing cylinder 13 is provided at the upper end of the collecting cylinder 12, and a pretreatment component 3 is provided in the inner cavity of the processing cylinder 13. The selenium-rich tea inside the processing cylinder 13 is processed by the pretreatment component 3, and a docking block 14 is provided at the upper end of the pretreatment component 3.

[0044] In this solution, a mesh plate or other screening component is provided at the lower end of the processing cylinder 13 to screen the selenium-rich tea leaves after grinding, and to dry them in conjunction with the drying equipment provided on the inner wall of the collecting cylinder 12 to facilitate subsequent operations.

[0045] Furthermore, support columns 11 are provided on both sides of the upper end of the base 1 , and positioning components 2 are provided on the upper ends of the support columns 11 , and the docking block 14 is fixed by the positioning components 2 .

[0046] Specifically, the inner wall of the support column 11 is provided with a device with telescopic function such as an electric telescopic rod, and is connected to an external control device. The electric telescopic rod drives the positioning component 2 to move up and down, making it suitable for different scenarios, and according to actual conditions, components of different sizes are replaced to process the inner wall of the processing cylinder 13.

[0047] Furthermore, the pretreatment component 3 includes a cover plate 31 connected to the docking block 14, a sleeve 311 is provided at the lower end of the cover plate 31, and a driving member 32 is provided at the middle position of the lower end of the cover plate 31, and a driving shaft 33 is provided at the output end of the driving member 32.

[0048] In this embodiment, the driving member 32 is a device with power output such as a motor, and is connected to an external control device. When the driving member 32 is started, it synchronously drives the driving shaft 33 set at its output end to rotate, and at the same time, the outer surface of the driving shaft 33 is symmetrically provided with protrusions.

[0049] Furthermore, a turntable 34 is rotatably installed at the end of the sleeve 311, and a clamping cylinder 342 is provided at the upper end of the turntable 34. The outer surface of the clamping cylinder 342 is sleeved with a second elastic member 341, and the end of the second elastic member 341 is connected to the end of the driving member 32, and the outer surface of the driving shaft 33 is in contact with the outer surface of the clamping cylinder 342.

[0050] Specifically, when the drive shaft 33 rotates, the protrusion set on the drive shaft 33 fits against the inner wall of the clamping cylinder 342, thereby synchronously driving the turntable 34 set on the clamping cylinder 342. The second elastic member 341 is an elastic component such as a spring, and the clamping cylinder 342 is supported by the second elastic member 341.

[0051] A groove corresponding to the protrusion is formed at the end of the clamping cylinder 342 , and the clamping cylinder 342 is driven to rotate when the driving shaft 33 rotates through the clamping engagement between the groove and the protrusion.

[0052] Furthermore, a telescopic member 36 is provided on the inner wall of the sleeve 311 , and an output end of the telescopic member 36 is connected to the cover plate 31 .

[0053] Specifically, the telescopic member 36 is a device with a telescopic function such as an electric telescopic rod, and is connected to an external control device. At the same time, when the telescopic member 36 is started, it pushes the entire cover 31 to move, wherein the cover 31 and the sleeve 311 are connected through a telescopic plate, and then the position of the sleeve 311 can be adjusted by the telescopic member 36, and the turntable 34 and the clamping cylinder 342 set on the sleeve 311 are driven to move, so that the clamping cylinder 342 is separated from the protrusion, and the turntable 34 is restored to its initial position by the second elastic member 341.

[0054] Furthermore, multiple groups of moving rods 35 are rotatably installed on the outer surface of the turntable 34, and the multiple groups of moving rods 35 are evenly distributed on the outer surface of the turntable 34. The inner wall of the sleeve 311 is provided with a guide groove 37 corresponding to the moving rod 35. The inner wall of the guide groove 37 is slidably installed with a slider 371. The end of the slider 371 passes through and extends to the outside of the sleeve 311. At the same time, a scraper 372 is provided at the end of the slider 371, and the inner wall of the processing cylinder 13 is scraped by the scraper 372.

[0055] Specifically, when the turntable 34 rotates, the moving rod 35 is synchronously driven to move. Since the end of the moving rod 35 is rotatably installed with a slider 371, the slider 371 is driven to move along the inner wall of the guide groove 37, and at the same time, the scraper 372 set at the end of the slider 371 is driven to move toward the middle or expand outward synchronously. The cross-section of the scraper 372 is arc-shaped, and the outer surface of the scraper 372 is in contact with the inner wall of the processing cylinder 13.

[0056] Furthermore, a power rod 38 is provided at the lower end of the driving shaft 33, and a protective cylinder 381 is rotatably installed on the outer surface of the power rod 38. A four-axis transmission part 382 is provided in the inner cavity of the protective cylinder 381. At the same time, a rotating rod 383 is provided on one side of the four-axis transmission part 382, ​​and a grinding plate 384 is provided on the end of the four-axis transmission part 382 away from the power rod 38. A spiral plate 39 is rotatably installed at the lower end of the protective cylinder 381, and a plurality of groups of extension plates 391 are evenly provided on the end of the spiral plate 39. The outer surface of the extension plate 391 is in contact with the outer surface of the rotating rod 383.

[0057] Specifically, when the driving shaft 33 rotates, the power rod 38 provided at its end is synchronously driven to rotate, and the power rod 38 is limited by the protective tube 381 , wherein the end of the protective tube 381 is connected to the lower end of the sleeve 311 .

[0058] The four-axis transmission member 382 is composed of four intermeshing gears, one end of which is connected to the power rod 38 and the other end away from the power rod 38 is connected to the grinding plate 384, thereby driving the grinding plate 384 to grind the tea leaves. The vertically arranged end of the gear is connected to the rotating rod 383. The rotation of the rotating rod 383 drives the extension plate 391 on the spiral plate 39 to move, thereby driving the spiral plate 39 to rotate, collecting the tea leaves on the inner wall of the processing cylinder 13 and transferring them to the lower end of the grinding plate 384.

[0059] Furthermore, the positioning assembly 2 includes a fixed plate 21 connected to the support column 11. A rotating shaft 22 is rotatably mounted on the end of the fixed plate 21. A rotating block 23 is provided in the middle of the outer surface of the rotating shaft 22. First elastic members 221 are sleeved on both ends of the outer surface of the rotating shaft 22, and the ends of the first elastic member 221 are connected to the fixed plate 21.

[0060] In this embodiment, the first elastic member 221 is an elastic member such as a spring. The first elastic member 221 supports the rotating shaft 22 to ensure that the rotating block 23 is always in a stable state.

[0061] Furthermore, a first push rod 24 is rotatably mounted on one end of the rotating block 23, and a movable plate 241 is rotatably mounted on the end of the first push rod 24. Limiting posts 27 are provided at both ends of the movable plate 241, and the ends of the limiting posts 27 extend through and outside the fixed plate 21. Adjustment blocks 271 are provided at the ends of the limiting posts 27.

[0062] Specifically, when the rotating shaft 22 rotates, it synchronously drives the rotating block 23 to rotate and drives the first push rod 24 set on the rotating block 23 to move, wherein the end of the first push rod 24 is rotatably installed with a movable plate 241, and limiting columns 27 are set at both ends of the movable plate 241, so that when the first push rod 24 drives the movable plate 241 to move, the limiting columns 27 cooperate with the adjusting block 271 to move, and the end of the adjusting block 271 is provided with rubber or other anti-slip components.

[0063] Furthermore, a second push rod 25 is rotatably mounted on one end of the rotating block 23 away from the first push rod 24. A pressing plate 251 is provided at the end of the second push rod 25. The end of the pressing plate 251 passes through and extends to the outside of the fixed plate 21. A pressing plate 26 is provided at the end of the pressing plate 251. The pressing plate 26 is located between two limiting posts 27.

[0064] Specifically, when the rotating block 23 rotates, the second push rod 25 is synchronously driven to move. Since the end of the second push rod 25 is rotatably installed with an extrusion plate 251, the pressing plate 26 is driven to move by the extrusion plate 251, so that the pressing plate 26 and the adjusting block 271 move synchronously, moving toward the middle or to both sides, which facilitates the disassembly and assembly of the processed parts and makes it more convenient to clean the equipment.

[0065] The control device can be a single-chip microcomputer (MCU) as the control terminal. In this embodiment, the MCU is a typical embedded microcontroller (MCU), consisting of an arithmetic unit (ALU), a controller, memory, and input / output devices, equivalent to a miniature computer. Compared to the general-purpose microprocessors used in personal computers, it emphasizes self-sufficiency (no external hardware required) and cost savings. Its greatest advantages are its small size, allowing it to be placed inside the instrument, low memory capacity, simple input / output interfaces, and low power consumption.

[0066] Example 2: A method for detecting the selenium content in selenium-enriched tea leaves, using any of the above-mentioned devices for detecting the selenium content in selenium-enriched tea leaves, the detection method comprising the following steps:

[0067] S1. A certain amount of selenium-rich tea leaves are selected and pre-processed. The rotating rod 383 is rotated to drive the extension plate 391 on the spiral plate 39 to move, thereby driving the spiral plate 39 to rotate, collecting the tea leaves located on the inner wall of the processing cylinder 13 and transferring them to the lower end of the grinding plate 384, thereby processing the selenium-rich tea leaves.

[0068] S2. When the turntable 34 rotates, it synchronously drives the moving rod 35 to move. Since the slider 371 is rotatably installed at the end of the moving rod 35, the slider 371 is driven to move along the inner wall of the guide groove 37. At the same time, the scraper 372 provided at the end of the slider 371 is driven to move toward the center or expand outward. The cross section of the scraper 372 is arc-shaped, and the outer surface of the scraper 372 is in contact with the inner wall of the processing cylinder 13, so that the tea leaves in contact can be transported to the grinding end.

[0069] S3. Use an atomic absorption spectrometer or ICP-MS instrument to test the treated selenium-rich tea leaves, analyze and process the test results through a data processing terminal, and output the specific value of the selenium content.

[0070] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A device for detecting the selenium content in selenium-enriched tea, characterized in that: The invention comprises a base (1), wherein a collecting cylinder (12) is provided at the upper end of the base (1), a processing cylinder (13) is provided at the upper end of the collecting cylinder (12), and a pre-processing component (3) is provided in the inner cavity of the processing cylinder (13), and the selenium-rich tea leaves in the processing cylinder (13) are processed by the pre-processing component (3), and a docking block (14) is provided at the upper end of the pre-processing component (3); Support columns (11) are provided on both sides of the upper end of the base (1), and a positioning assembly (2) is provided at the upper end of the support column (11), and the docking block (14) is fixed by the positioning assembly (2); The pre-treatment assembly (3) comprises a cover plate (31) connected to the docking block (14), a sleeve (311) is provided at the lower end of the cover plate (31), a driving member (32) is provided at the middle position of the lower end of the cover plate (31), and a driving shaft (33) is provided at the output end of the driving member (32); A turntable (34) is rotatably mounted on the end of the sleeve (311), a clamping cylinder (342) is provided on the upper end of the turntable (34), a second elastic member (341) is sleeved on the outer surface of the clamping cylinder (342), an end of the second elastic member (341) is connected to the end of the driving member (32), and the outer surface of the driving shaft (33) is in contact with the outer surface of the clamping cylinder (342); A plurality of groups of moving rods (35) are rotatably mounted on the outer surface of the turntable (34), and the plurality of groups of moving rods (35) are evenly distributed on the outer surface of the turntable (34); a guide groove (37) corresponding to the moving rod (35) is provided on the inner wall of the sleeve (311); a slider (371) is slidably mounted on the inner wall of the guide groove (37); an end of the slider (371) passes through and extends to the outside of the sleeve (311); and a scraper (372) is provided on the end of the slider (371); the inner wall of the treatment cylinder (13) is scraped by the scraper (372); When the rotating disk (34) rotates, the moving rod (35) is synchronously driven to move. Since the end of the moving rod (35) is rotatably mounted with a slider (371), the slider (371) is driven to move along the inner wall of the guide groove (37), and the scraper (372) provided at the end of the slider (371) is driven to move toward the center or expand outward synchronously. The lower end of the driving shaft (33) is provided with a power rod (38), the outer surface of the power rod (38) is rotatably mounted with a protective cylinder (381), the inner cavity of the protective cylinder (381) is provided with a four-axis transmission member (382), and a rotating rod (383) is provided on one side of the four-axis transmission member (382), and a grinding plate (384) is provided at one end of the four-axis transmission member (382) away from the power rod (38), the lower end of the protective cylinder (381) is rotatably mounted with a spiral plate (39), and the end of the spiral plate (39) is evenly provided with a plurality of extension plates (391), and the outer surface of the extension plate (391) is in contact with the outer surface of the rotating rod (383); The four-axis transmission member (382) is composed of four mutually meshing gears, one end of which is connected to the power rod (38), and the end away from the power rod (38) is connected to the grinding plate (384), thereby driving the grinding plate (384) to grind the tea leaves. The vertically arranged gear end is connected to the rotating rod (383), and the rotating rod (383) is rotated to drive the extension plate (391) on the spiral plate (39) to move, thereby driving the spiral plate (39) to rotate, collecting the tea leaves located on the inner wall of the processing cylinder (13) and transmitting them to the lower end of the grinding plate (384).

2. A device for detecting selenium content in selenium-enriched tea according to claim 1, characterized in that: A telescopic member (36) is provided on the inner wall of the sleeve (311), and an output end of the telescopic member (36) is connected to the cover plate (31).

3. A device for detecting selenium content in selenium-enriched tea according to claim 1, characterized in that: The positioning assembly (2) comprises a fixing plate (21) connected to the supporting column (11), a rotating shaft (22) is rotatably mounted on the end of the fixing plate (21), and a rotating block (23) is provided at the middle position of the outer surface of the rotating shaft (22).

4. A device for detecting selenium content in selenium-enriched tea according to claim 3, characterized in that: Both ends of the outer surface of the rotating shaft (22) are sleeved with first elastic members (221), and the ends of the first elastic members (221) are connected to the fixing plate (21).

5. A device for detecting selenium content in selenium-enriched tea according to claim 4, characterized in that: A first push rod (24) is rotatably mounted on one end of the rotating block (23), and a movable plate (241) is rotatably mounted on the end of the first push rod (24).

6. A device for detecting the selenium content in selenium-enriched tea according to claim 5, characterized in that: Limiting columns (27) are provided at both ends of the movable plate (241), and the ends of the limiting columns (27) penetrate and extend to the outside of the fixed plate (21).

7. A device for detecting the selenium content in selenium-enriched tea according to claim 6, characterized in that: An adjustment block (271) is provided at the end of the limiting column (27).

8. A device for detecting the selenium content in selenium-enriched tea according to claim 7, characterized in that: A second push rod (25) is rotatably mounted on one end of the rotating block (23) away from the first push rod (24), and an extrusion plate (251) is provided at the end of the second push rod (25). The end of the extrusion plate (251) penetrates and extends to the outside of the fixed plate (21).

9. A device for detecting the selenium content in selenium-enriched tea according to claim 8, characterized in that: A pressing plate (26) is provided at the end of the extrusion plate (251), and the pressing plate (26) is located between the two limiting columns (27).

10. A method for detecting the selenium content in selenium-enriched tea, characterized in that: Using the device for detecting the selenium content in selenium-enriched tea leaves according to any one of claims 1 to 9, the detection method comprises the following steps: S1. Select a certain amount of selenium-rich tea leaves and pre-treat the selected selenium-rich tea leaves. The rotating rod (383) is rotated to drive the extension plate (391) on the spiral plate (39) to move, thereby driving the spiral plate (39) to rotate, collecting the tea leaves located on the inner wall of the processing cylinder (13) and transferring them to the lower end of the grinding plate (384), thereby processing the selenium-rich tea leaves. S2. When the turntable (34) rotates, the moving rod (35) is synchronously driven to move. Since the end of the moving rod 35 is rotatably mounted with a slider (371), the slider (371) is driven to move along the inner wall of the guide groove (37). At the same time, the scraper (372) provided at the end of the slider (371) is driven to move toward the middle or expand outward. The cross section of the scraper (372) is arc-shaped, and the outer surface of the scraper (372) is in contact with the inner wall of the processing cylinder (13), so that the tea leaves in contact can be transported to the grinding end. S3. Use an atomic absorption spectrometer or an ICP-MS instrument to test the treated selenium-rich tea leaves, analyze and process the test results through a data processing terminal, and output a specific value of the selenium content.

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