Intelligent rapid detection device for selenium content in selenium-rich tea leaves and use method of intelligent rapid detection device

Abstract

The invention discloses an intelligent rapid detection device for selenium content in selenium-rich tea and a use method thereof, and relates to the related field of selenium content detection.The intelligent rapid detection device comprises a pretreatment box, a detection box is fixed to the outer wall of the right side of the pretreatment box, and a treatment bottle is placed in the pretreatment box; a grinding mechanism is arranged in the sealing cover, a sample in the sealing cover can be fully crushed through the arrangement of the grinding mechanism, a pressurizing mechanism is further arranged in the treatment bottle, the air pressure in the sealed treatment bottle can be increased through the arrangement of the pressurizing mechanism, and the reaction rate between mixed acid and the sample can be increased. According to the intelligent rapid detection device for the selenium content in the selenium-rich tea and the use method thereof, the grinding roller rotates to drive the rotating rod to rotate, and then the selenium is discharged into the treatment bottle from the air outlet, so that the air pressure in the bottle is increased, the high-pressure environment can improve the temperature and the acid oxidation capacity, the selenium digestion time is shortened, the recovery rate is remarkably higher than that of a normal-pressure wet method, the detection time is greatly shortened, and the detection efficiency is improved. And the detection efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field related to selenium content detection, and in particular to an intelligent rapid detection device for selenium content in selenium-enriched tea leaves and a method for using the device. Background Art

[0002] Selenium has many physiological activities such as anti-oxidation, anti-aging, antibacterial and detoxification, anti-cancer and improving human immunity. Studies have shown that selenium deficiency in the human body can cause dysfunction of some organs, leading to Keshan disease, cardiovascular disease and growth retardation. Tea tree is a plant with a strong ability to accumulate selenium, and natural selenium-rich tea produced in selenium-rich areas is an ideal selenium supplement beverage. Vigorously promoting selenium-rich tea in selenium-deficient or low-selenium areas can increase the selenium level of local residents and play a health role in preventing diseases, improving human resistance and other health benefits. For this reason, when it is necessary to test the selenium content in different selenium teas, a rapid detection device can be used.

[0003] When the existing detection device is used, when testing samples, there is a problem of low detection efficiency, which leads to certain deficiencies in use. In order to solve the above problems, reference can be made to the prior art (Chinese patent application number CN202510175273.8, application date 2025-03-26), which discloses a detection device and detection method for selenium content in selenium-rich tea. When the rotating block rotates, the detection device synchronously drives the second push rod to move. Since an extrusion plate is installed at 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 and move closer to the middle or to both sides. , which makes it convenient to disassemble and assemble the processed parts, making it more convenient to clean the equipment. You can also refer to the prior art (Chinese patent application number CN202320536867.3, application date 2023-03-20) disclosed a rapid detection device for selenium content in purple sweet potatoes. The detection device is provided with a movable frame inside the detection device, and multiple fixed components are provided inside the movable frame, which is convenient for clamping and fixing the purple sweet potato blocks that need to be detected at different parts. A cylinder is provided to drive the sensor to insert the purple sweet potato blocks for detection, thereby improving the efficiency of detecting different parts of the purple sweet potato during the same detection process.

[0004] Although the above-mentioned device can detect selenium content, when the wet digestion method is used to detect the selenium content in tea, the sample needs to be soaked in a nitric acid-perchloric acid mixture and the sample can only be tested after the solution becomes clear and transparent and emits white smoke. However, this soaking process takes a long time, resulting in a long overall detection cycle and inability to achieve rapid detection.

[0005] Therefore, we propose an intelligent rapid detection device for selenium content in selenium-rich tea and its use method to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to provide an intelligent rapid detection device for selenium content in selenium-rich tea and a method for using the same, so as to solve the problem raised in the above background technology that the detection devices currently on the market need to use a mixed acid of nitric acid and perchloric acid for soaking when performing detection processing through wet digestion method. The detection process can only be carried out after the solution becomes clear and transparent and emits white smoke. However, the time required for the soaking process is relatively long, resulting in the problem that the overall detection time is still relatively long.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an intelligent rapid detection device for selenium content in selenium-rich tea, comprising a pretreatment box, a detection box fixed on the right outer wall of the pretreatment box, and a treatment bottle placed inside the pretreatment box; the treatment bottle is fixed inside the pretreatment box by a limiting mechanism, and a sealing cover is fitted on the top of the treatment bottle, and the sealing cover is moved to a high degree inside the pretreatment box by an electric push rod, a grinding mechanism is provided inside the sealing cover, and the setting of the grinding mechanism can fully crush the sample inside the sealing cover, and a pressurizing mechanism is also provided inside the treatment bottle, and the setting of the pressurizing mechanism can increase the air pressure inside the sealed treatment bottle, thereby accelerating the reaction rate between the mixed acid and the sample.

[0008] Preferably, the limiting mechanism includes a placement hole opened inside the pretreatment box, and the outer sides of the left and right ends of the pretreatment box are threadedly connected with threaded locking blocks, and the inner ends of the threaded locking blocks are fixed to the outer sides of the limiting blocks embedded with anti-slip pads, and the inner sides of the limiting blocks are fitted to the outer wall positions of the treatment bottles. The position of the limiting blocks can be flexibly adjusted through threaded connections to firmly fix treatment bottles of different specifications, and the anti-slip pads increase friction to prevent the treatment bottles from shaking during treatment, thereby improving the stability of the device.

[0009] Preferably, a driving motor is fixed at the center position of the sealing cover, and the two sides of the top edge of the sealing cover are connected to the output ends of the electric push rod. The top position of the electric push rod is fixed to the top of the inner wall of the pretreatment box. The top position of the sealing cover is also connected to the first liquid inlet and the second liquid inlet, which facilitates nitric acid and perchloric acid to enter the interior of the treatment bottle. The electric push rod can accurately control the lifting and lowering of the sealing cover to ensure that the sealing cover fits tightly with the treatment bottle and ensures sealing; the double liquid inlet separation design can avoid premature mixing of the two acid solutions, facilitates control of the amount of acid added and the order of acid addition, and improves operation accuracy.

[0010] Preferably, the driving motor includes a rotating square rod fixed at the output end, and the rotating square rod is sealingly rotatably arranged at the lower end position of the sealing cover, a vent is opened inside the rotating square rod, and an air inlet disk is rotatably arranged on the outer side of the vent, the outer end position of the air inlet disk extends out of the top outside of the sealing cover, and a one-way air inlet valve is embedded in the interior of the air inlet disk. The sealing rotation setting ensures the stability of the air pressure in the processing bottle, and the one-way air inlet valve can prevent gas backflow, ensure the one-way entry of external gas, provide a stable gas source for the pressurizing mechanism, and improve the pressurization reliability.

[0011] Preferably, the grinding mechanism includes a crushing rod that is rotatably arranged inside the processing bottle. The crushing rod is located at the upper end of the interior of the processing bottle and is attached to the outer wall of the rotating square rod, and the crushing rod is located above the filter disk fixed inside the pretreatment box. A grinding roller is also provided below the filter disk, and the center position of the grinding roller is connected to the bottom axial end position of the crushing rod. The middle part of the processing bottle is close to the lower position of the grinding roller, which can realize the disassembly of the processing bottle. The crushing rod and the grinding roller cooperate to realize double crushing of the sample, and the filter disk screens qualified broken samples, improves the sample crushing fineness, and increases the contact area with the acid solution; the detachable design of the processing bottle facilitates internal cleaning and maintenance, and extends the service life of the device.

[0012] Preferably, the pressurizing mechanism includes a rotating rod fixed to the bottom position of the grinding roller, the bottom outer side of the rotating rod is rotatably arranged inside the lower part of the threaded rod, the upper end thread of the threaded rod is sealed and extends into the interior of the rotating rod, the upper end position of the threaded rod is threadedly connected to the inner side of the connecting sleeve, and a piston block is fixed to the top of the connecting sleeve, the outer side of the piston block is fitly arranged in a matching square groove opened in the interior of the rotating rod, an air outlet is also provided on the outer side of the upper end of the rotating rod, and a gas supply port is provided at the internal position of the rotating rod, and the gas supply port is connected to the vent, and automatic pressurization is achieved through mechanical linkage, without the need for additional power, saving energy; the piston block cooperates with the matching square groove to ensure airtightness, and the gas supply port is connected to the vent to achieve stable gas delivery, effectively increasing the air pressure in the processing bottle.

[0013] Preferably, the bottom position of the threaded rod is fixed at the top center position of the collecting bucket, and a one-way air outlet valve is provided inside the air outlet to discharge the gas inside the gas transmission port into the interior of the processing bottle. The one-way air outlet valve prevents the gas from flowing back and ensures that the gas pressure continues to increase steadily. The collection bucket and the threaded rod are fixed to enhance the integrity of the structure, while assisting in collecting the reaction liquid and improving the integration of the device.

[0014] Preferably, a Tesla valve channel is provided inside the collecting hopper, and the bottom end of the Tesla valve channel is connected to the top position of the liquid outlet, and the liquid outlet is located at the lower end of the processing bottle. Both sides of the lower end of the Tesla valve channel are also connected to auxiliary discharge ports, and the outer side of the auxiliary discharge port is connected to the fixed vertical cylinder, and the inner wall position of the fixed vertical cylinder is fixed to the head end position of the connecting spring, and the tail end of the connecting spring is fixed to the outer side of the moving vertical rod, and a piston disk is fixed at the top position of the moving vertical rod, and the outer wall of the piston disk is attached to the fixed vertical cylinder. It is closed on the inner wall of the fixed vertical cylinder, and the bottom position of the movable vertical rod is also connected to the float part through a pull rope; an electromagnetic valve is provided inside the liquid outlet to control the reaction liquid to enter the lower end of the treatment bottle, and a discharge port is provided at the bottom position of the treatment bottle to discharge the reaction liquid. The Tesla valve channel realizes one-way flow of liquid to prevent backflow; the electromagnetic valve accurately controls the timing of liquid entry, and cooperates with the discharge auxiliary port and the piston disc structure to accelerate the fall of the liquid, improve the discharge efficiency and avoid residue.

[0015] Preferably, the buoyancy of the float is greater than the elastic force of the connecting spring, and the movable vertical rod forms an elastic sliding structure between the connecting spring and the inner wall of the fixed vertical cylinder, and the buoyancy and elastic force are used to achieve automatic linkage without manual operation, and the lifting device is intelligent; the elastic sliding structure ensures that the movable vertical rod moves smoothly, ensures that the unloading auxiliary effect is stable, and reduces manual intervention.

[0016] A device for rapidly detecting the selenium content in selenium-enriched tea leaves is disclosed. A method for using the device for rapidly detecting the selenium content in selenium-enriched tea leaves is also disclosed. The specific method is as follows: S1: Installation and fixation: Place the tea sample into the processing bottle, then place the processing bottle in the placement hole of the pre-treatment box, rotate the threaded locking block, and firmly fix the processing bottle with the limit block; then start the electric push rod to make the sealing cover fit accurately on the top of the processing bottle, completing the sealing preparation; S2: Sample crushing: Turn on the drive motor, and the rotating square rod at its output end will drive the crushing rod above the filter disc to initially crush the sample; the crushed sample will be screened by the filter disc and fall to the bottom where it will be finely ground again by the grinding roller to ensure that the sample is fully crushed; S3: Acid addition and pressurized digestion: A mixed acid of nitric acid and perchloric acid is added through the first and second liquid inlets, respectively. During the operation of the drive motor, the rotating rod at the bottom of the grinding roller rotates synchronously, driving the piston block to move up and down in the matching square groove. After air is sucked in by the air inlet disk, it is discharged into the processing bottle through the air outlet, increasing the air pressure in the bottle and accelerating the digestion reaction between the mixed acid and the sample. S4: Liquid collection and testing: After the reaction is completed, open the solenoid valve at the liquid outlet, and the reacted liquid flows into the lower end of the processing bottle through the Tesla valve channel; during this process, the float will drive the piston disk to assist the liquid in falling, and finally the liquid will be discharged from the discharge port and enter the detection box for testing, and then wait for the results.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The driving motor drives the rotating square rod to rotate, and then the crushing rod and grinding roller perform double crushing on the tea sample. The crushing rod is first used for preliminary crushing above the filter plate, and the qualified sample is then ground again by the grinding roller below the filter plate to obtain the crushed sample. This process can fully crush the sample and increase the contact area between the sample and the mixed acid.

[0018] 2. A pressurizing mechanism is provided. When the grinding roller rotates, the rotating rod is driven to rotate. Due to the threaded connection between the threaded rod and the connecting sleeve, the piston block moves up and down in the matching square groove. External gas enters through the one-way air inlet valve of the air inlet disk through the air vent and air outlet, and is then discharged into the processing bottle from the air outlet, increasing the air pressure in the bottle. The high-pressure environment can increase the temperature and acid oxidation capacity, shortening the selenium digestion time. The recovery rate is significantly higher than that of the normal pressure wet method, greatly shortening the detection time and improving the detection efficiency.

[0019] 3. The Tesla valve channel at the top of the collection hopper is connected to the liquid outlet. The reacted liquid enters the Tesla valve channel through the collection hopper. As the liquid at the lower end of the processing bottle increases, the float moves to drive the moving vertical rod, causing the piston disc to move in the fixed vertical cylinder, pumping air inside the fixed vertical cylinder. By connecting to the auxiliary discharge port, the liquid in the Tesla valve channel is accelerated to fall. The solenoid valve at the liquid outlet can control the liquid to enter the lower end of the processing bottle. The bottom discharge port is used to discharge the liquid. This setting not only assists in discharge, but also prevents liquid leakage during storage, ensuring smooth liquid collection and the accuracy of subsequent testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the main structure of the pretreatment box of the present invention; Figure 3 This is a schematic diagram of the main structure of the processing bottle of the present invention; Figure 4 This is a schematic diagram of the main structure of the sealing cover of the present invention; Figure 5 This is a schematic diagram of the main cross-sectional structure of the processing bottle of the present invention; Figure 6 For the present invention Figure 5 A in the middle is an enlarged structural diagram; Figure 7 This is a schematic diagram of the main cross-sectional structure of the rotating rod of the present invention; Figure 8 This is a schematic diagram of the partial cross-sectional structure of the collecting bucket of the present invention; Figure 9 For the present invention Figure 8 Enlarged structural diagram at location B.

[0021] In the figure: 1. Pretreatment box; 2. Placement hole; 3. Threaded locking block; 4. Limit block; 5. Treatment bottle; 6. Sealing cover; 7. Drive motor; 701. Rotating square rod; 702. Vent; 8. Electric push rod; 9. First liquid inlet; 10. Second liquid inlet; 11. Inlet plate; 12. Crushing rod; 13. Filter plate; 14. Grinding roller; 15. Collecting bucket; 1501. Heating element; 16. Rotating rod; 17. Threaded rod; 18. Connecting sleeve; 19. Piston block; 20. Matching square groove; 21. Air outlet; 22. Air supply port; 23. Tesla valve channel; 24. Liquid outlet; 25. Auxiliary discharge port; 26. Float; 27. Moving vertical rod; 28. Piston plate; 29. ​​Connecting spring; 30. Fixed vertical cylinder; 31. Discharge port; 32. Inspection box. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] See also Figures 1-9 The present invention provides the following technical solutions: an intelligent rapid detection device for selenium content in selenium-enriched tea and a method for using the same.

[0024] Example 1: In order to facilitate the preparation work before the reaction, please refer to the attached Figure 1 -Attached Figure 5, including a pretreatment box 1, a detection box 32 is fixed at the right outer wall position of the pretreatment box 1, and a treatment bottle 5 is placed inside the pretreatment box 1; the treatment bottle 5 is fixed to the inside of the pretreatment box 1 by a limiting mechanism, and the top of the treatment bottle 5 is fitted with a sealing cover 6, and the sealing cover 6 is moved to a high degree in the interior of the pretreatment box 1 by an electric push rod 8. A grinding mechanism is provided inside the sealing cover 6, and the setting of the grinding mechanism can fully crush the sample inside the sealing cover 6. The limiting mechanism includes a placement hole 2 opened inside the pretreatment box 1, and the left and right ends of the pretreatment box 1 are threadedly connected to the outer sides of the threaded locking blocks 3, and the inner ends of the threaded locking blocks 3 are fixed to the outer sides of the limit blocks 4 embedded with anti-slip pads, and the inner sides of the limit blocks 4 are fitted with the outer wall positions of the treatment bottle 5; a driving motor 7 is fixed at the center position of the sealing cover 6, and the positions on both sides of the top edge of the sealing cover 6 are connected to the output ends of the electric push rod 8. The top position of the electric push rod 8 is fixed to the top of the inner wall of the pretreatment box 1, and the top position of the sealing cover 6 is also connected to the first A liquid inlet 9 and a second liquid inlet 10 facilitate the entry of nitric acid and perchloric acid into the interior of the treatment bottle 5; the drive motor 7 includes a rotating square rod 701 fixed at the output end, and the rotating square rod 701 is sealed and rotatably arranged at the lower end of the sealing cover 6, and a vent 702 is opened inside the rotating square rod 701, and an air intake disk 11 is rotatably arranged on the outer side of the vent 702, and the outer end of the air intake disk 11 extends out of the top outside of the sealing cover 6, and a one-way air intake valve is embedded in the interior of the air intake disk 11; grinding mechanism It includes a crushing rod 12 that is rotated inside the processing bottle 5. The crushing rod 12 is located at the upper end of the processing bottle 5 and is attached to the outer wall of the rotating square rod 701. The crushing rod 12 is located above the filter disc 13 fixed inside the pretreatment box 1. A grinding roller 14 is also provided below the filter disc 13, and the center position of the grinding roller 14 is connected to the bottom axial end position of the crushing rod 12. The middle part of the processing bottle 5 is near the lower position of the grinding roller 14 and is threadedly connected to realize the disassembly of the processing bottle 5.

[0025] First, place the processing bottle 5 containing the sample into the interior of the pretreatment box 1, and then rotate the threaded locking block 3, so that the threaded locking block 3 can drive the limit block 4 to limit the outer wall of the processing bottle 5. When it moves to the specified position, the electric push rod 8 drives the sealing cover 6 to move its position inside the pretreatment box 1. At this time, the sealing cover 6 will fit into the top position of the processing bottle 5, and the rotating square rod 701 connected to the bottom of the driving motor 7 will be embedded in the top of the crushing rod 12. The rotation of the driving motor 7 can make the crushing rod 12 rotate inside the processing bottle 5. Rotate, and then the crushing rod 12 can perform preliminary crushing treatment on the sample inside the processing bottle 5 at the position above the filter disk 13. The qualified sample will be ground again by the grinding roller 14 below the filter disk 13. At this time, the crushed sample can be obtained. At this time, the interior of the processing bottle 5 can be filled with mixed acid through the first liquid inlet 9 and the second liquid inlet 10. At this time, it can be sealed and soaked overnight, and digested by low-temperature heating the next day until the solution is clear and transparent and emits white smoke. After cooling, it is fixed to volume with ultrapure water. At the same time, a blank control is also made to facilitate the subsequent control treatment. At this time, the early preparation work can be completed.

[0026] Example 2: When the detection device currently on the market is subjected to the wet digestion method for detection, it is necessary to use a mixture of nitric acid and perchloric acid for soaking. After the solution becomes clear and transparent and emits white smoke, the detection process can be carried out. However, the soaking process takes a long time, resulting in a problem that the overall detection time is still long. Please refer to the attached Figure 5 -Attached Figure 7 , the interior of the processing bottle 5 is also provided with a pressurizing mechanism, the setting of the pressurizing mechanism can realize the increase of the internal air pressure of the sealed processing bottle 5, which can accelerate the reaction rate between the mixed acid and the sample, and the pressurizing mechanism includes a rotating rod 16 fixed to the bottom position of the grinding roller 14, the bottom outer side of the rotating rod 16 is rotatably arranged below the inner part of the threaded rod 17, the upper end thread of the threaded rod 17 is sealed and extends into the interior of the rotating rod 16, the upper end position of the threaded rod 17 is threadedly connected to the inner side of the connecting sleeve 18, and the connecting sleeve 1 is connected to the inner side of the connecting sleeve 18. 8 is fixed with a piston block 19, and the outer side of the piston block 19 is fitted into a matching square groove 20 provided inside the rotating rod 16. An air outlet 21 is also provided on the outer side of the upper end of the rotating rod 16, and a gas supply port 22 is provided inside the rotating rod 16, and the gas supply port 22 is connected to the vent 702; the bottom position of the threaded rod 17 is fixed at the top center position of the collecting bucket 15, and a one-way air outlet valve is provided inside the gas outlet 21 to discharge the gas inside the gas supply port 22 into the interior of the processing bottle 5.

[0027] When the reaction is carried out, the rotating rod 16 fixed to the bottom of the grinding roller 14 continuously rotates on the outside of the threaded rod 17. Since the outside of the threaded rod 17 and the inner side of the connecting sleeve 18 are threadedly connected, the connecting sleeve 18 can drive the piston block 19 to continuously move up and down inside the matching square groove 20. Since the gas supply port 22 and the vent 702 are connected, and the outer end of the gas inlet disk 11 extends out of the top of the sealing cover 6, the external gas can enter the inside of the gas supply port 22 through the one-way gas inlet valve inside the gas inlet disk 11, and the gas is discharged through the gas outlet 21, which can then pressurize the middle end of the processing bottle 5. The high-pressure environment can shorten the selenium digestion time by increasing the temperature and acid oxidation ability, and the recovery rate is significantly higher than that of the normal pressure wet method, thereby accelerating the digestion reaction time.

[0028] Example 3: In order to preserve the reaction liquid, please refer to the attached Figure 1 and attached Figure 5 -Attached Figure 9 A Tesla valve channel 23 is provided inside the collecting hopper 15. A heating element 1501 is installed on both sides of the collecting hopper 15 near the Tesla valve channel 23. The bottom end of the Tesla valve channel 23 is connected to the top of the liquid outlet 24. The liquid outlet 24 is located at the lower end of the processing bottle 5. The lower end of the Tesla valve channel 23 is also connected to the auxiliary discharge port 25 on both sides. The outer side of the auxiliary discharge port 25 is connected to the fixed vertical cylinder 30. The inner wall position of the fixed vertical cylinder 30 is fixed to the head end position of the connecting spring 29. The tail end of the connecting spring 29 is fixed to the movable vertical rod 27. On the outside of the movable vertical rod 27, a piston disk 28 is fixed at the top position of the movable vertical rod 27, and the outer wall of the piston disk 28 is fitted to the inner wall of the fixed vertical cylinder 30. The bottom position of the movable vertical rod 27 is also connected to the float member 26 through a pull rope; an electromagnetic valve is provided inside the liquid outlet 24, which can control the reacted liquid to enter the lower end of the processing bottle 5, and a discharge port 31 is provided at the bottom position of the processing bottle 5 to discharge the reacted liquid; the buoyancy of the float member 26 is greater than the elastic force of the connecting spring 29, and the movable vertical rod 27 forms an elastic sliding structure between the connecting spring 29 and the inner wall of the fixed vertical cylinder 30.

[0029] When the reaction is finished, the Tesla valve channel 23 can be opened, so that the reacted liquid enters the interior of the Tesla valve channel 23 through the collecting bucket 15, and since a heating element 1501 is provided on the side of the collecting bucket 15 close to the Tesla valve channel 23, the liquid will flow through the Tesla valve channel 23. At this time, the liquid in the Tesla valve channel 23 can be heated by the heating element 1501, thereby promoting sample decomposition, removing interfering substances and concentrating the test liquid. At this time, the liquid will enter the lower position of the processing bottle 5 through the liquid outlet 24. Since the liquid inside the lower end of the processing bottle 5 continues to increase, the float 26 will also move. The float member 26 can then drive the movable vertical rod 27 to move inside the fixed vertical cylinder 30, so that the interior of the fixed vertical cylinder 30 can be evacuated through the piston disk 28. Since the fixed vertical cylinder 30 is connected to the auxiliary discharge port 25, the liquid in the Tesla valve channel 23 can be continuously accelerated to fall. The above arrangement can prevent the liquid stored in the processing bottle 5 from leaking later, and the obtained liquid can be discharged into the test tube through the discharge port 31. When the discharge port 31 is opened, the internal high pressure will also squeeze the internal liquid. At this time, the liquid can be quickly transported into the test tube, and then the test tube can be sent to the interior of the detection box 32 for detection and analysis.

[0030] An intelligent rapid detection device for selenium content in selenium-enriched tea leaves is disclosed. The method for using the intelligent rapid detection device for selenium content in selenium-enriched tea leaves is as follows: S1: Installation and Fixing: Place the tea sample into the processing bottle 5, then place the processing bottle 5 into the placement hole 2 of the pre-treatment box 1, rotate the threaded locking block 3, and firmly fix the processing bottle 5 through the limit block 4; then start the electric push rod 8 to make the sealing cover 6 accurately fit the top of the processing bottle 5, completing the sealing preparation; S2: Sample crushing: The driving motor 7 is turned on, and the rotating square rod 701 at its output end drives the crushing rod 12 to crush the sample above the filter disc 13. The crushed sample is filtered by the filter disc 13 and falls below to be finely ground again by the grinding roller 14 to ensure that the sample is fully crushed. S3: Acid addition and pressurized digestion: A mixed acid of nitric acid and perchloric acid is added through the first liquid inlet 9 and the second liquid inlet 10, respectively. During the operation of the drive motor 7, the rotating rod 16 at the bottom of the grinding roller 14 rotates synchronously, driving the piston block 19 to move up and down in the matching square groove 20. After air is sucked in by the air inlet disk 11, it is discharged into the processing bottle 5 through the air outlet 21, thereby increasing the air pressure in the bottle and accelerating the digestion reaction between the mixed acid and the sample. S4: Liquid collection and testing: After the reaction is completed, the solenoid valve of the liquid outlet 24 is opened, and the reacted liquid flows into the lower end of the processing bottle 5 through the Tesla valve channel 23; during this process, the float 26 will drive the piston disk 28 to assist the liquid in falling, and finally the liquid is discharged from the discharge port 31 and enters the detection box 32 for detection, and then wait for the test results.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An intelligent rapid detection device for selenium content in selenium-enriched tea, comprising a pretreatment box (1), a detection box (32) fixed to the right outer wall of the pretreatment box (1), and a treatment bottle (5) placed inside the pretreatment box (1); Its characteristics are: The processing bottle (5) is fixed inside the pretreatment box (1) through a limiting mechanism, and a sealing cover (6) is fitted on the top of the processing bottle (5). The sealing cover (6) is moved in height inside the pretreatment box (1) through an electric push rod (8). A grinding mechanism is provided inside the sealing cover (6). The setting of the grinding mechanism enables the sample inside the sealing cover (6) to be fully crushed. A pressurizing mechanism is also provided inside the processing bottle (5). The setting of the pressurizing mechanism enables the air pressure inside the sealed processing bottle (5) to be increased, thereby accelerating the reaction rate between the mixed acid and the sample.

2. The intelligent rapid detection device for selenium content in selenium-enriched tea according to claim 1, characterized in that: The limiting mechanism comprises a placement hole (2) provided inside the pretreatment box (1), and the outer sides of the left and right ends of the pretreatment box (1) are threadedly connected with threaded locking blocks (3), and the inner ends of the threaded locking blocks (3) are fixed to the outer sides of the limiting blocks (4) embedded with anti-slip pads, and the inner sides of the limiting blocks (4) are fitted to the outer wall of the treatment bottle (5).

3. The intelligent rapid detection device for selenium content in selenium-enriched tea according to claim 1, characterized in that: A driving motor (7) is fixed at the center of the sealing cover (6), and both sides of the top edge of the sealing cover (6) are connected to the output ends of the electric push rod (8). The top position of the electric push rod (8) is fixed to the top of the inner wall of the pretreatment box (1). The top position of the sealing cover (6) is also connected to the first liquid inlet (9) and the second liquid inlet (10), so as to facilitate nitric acid and perchloric acid to enter the interior of the treatment bottle (5).

4. The intelligent rapid detection device for selenium content in selenium-enriched tea according to claim 3, characterized in that: The driving motor (7) includes a rotating square rod (701) fixed at the output end, and the rotating square rod (701) is sealed and rotatably arranged at the lower end position of the sealing cover (6), an air vent (702) is opened inside the rotating square rod (701), and an air intake disk (11) is rotatably arranged outside the air vent (702), the outer end position of the air intake disk (11) extends out of the top outside of the sealing cover (6), and a one-way air intake valve is embedded in the interior of the air intake disk (11).

5. The intelligent rapid detection device for selenium content in selenium-enriched tea according to claim 1, characterized in that: The grinding mechanism includes a crushing rod (12) that is rotatably arranged inside the processing bottle (5), the crushing rod (12) is located at the upper end of the processing bottle (5) and is attached to the outer wall of the rotating square rod (701), and the crushing rod (12) is located above the filter disc (13) fixed inside the pretreatment box (1), and a grinding roller (14) is further provided below the filter disc (13), and the center position of the grinding roller (14) is connected to the bottom axial end position of the crushing rod (12), and the middle part of the processing bottle (5) is near the lower position of the grinding roller (14) to realize the disassembly processing of the processing bottle (5).

6. The intelligent rapid detection device for selenium content in selenium-enriched tea according to claim 1, characterized in that: The pressurizing mechanism includes a rotating rod (16) fixed to the bottom position of the grinding roller (14), the bottom outer side of the rotating rod (16) is rotatably arranged inside the lower part of the threaded rod (17), the upper end thread of the threaded rod (17) is sealed and extends into the interior of the rotating rod (16), the upper end of the threaded rod (17) is threadedly connected to the inner side of the connecting sleeve (18), and a piston block (19) is fixed to the top of the connecting sleeve (18), the outer side of the piston block (19) is fitted in a matching square groove (20) opened inside the rotating rod (16), the upper end outer side of the rotating rod (16) is also provided with an air outlet (21), and the internal position of the rotating rod (16) is provided with an air supply port (22), and the air supply port (22) is connected to the vent (702).

7. The intelligent rapid detection device for selenium content in selenium-enriched tea according to claim 6, characterized in that: The bottom of the threaded rod (17) is fixed at the top center of the collecting hopper (15), and a one-way gas outlet valve is provided inside the gas outlet (21) to discharge the gas inside the gas delivery port (22) into the interior of the processing bottle (5).

8. The intelligent rapid detection device for selenium content in selenium-enriched tea according to claim 7, characterized in that: A Tesla valve channel (23) is provided inside the collecting hopper (15), and heating elements (1501) are installed on both sides of the collecting hopper (15) near the Tesla valve channel (15), and the bottom end of the Tesla valve channel (23) is connected to the top of the liquid outlet (24), and the liquid outlet (24) is located at the lower end of the processing bottle (5). The lower end of the Tesla valve channel (23) is also connected to the two sides of the material discharge auxiliary port (25), and the outer side of the material discharge auxiliary port (25) is connected to the fixed vertical cylinder (30), and the inner wall position of the fixed vertical cylinder (30) is connected to the connecting spring. The head end of the spring (29) is fixed, and the tail end of the connecting spring (29) is fixed on the outside of the movable vertical rod (27). A piston disc (28) is fixed on the top of the movable vertical rod (27), and the outer wall of the piston disc (28) is fitted on the inner wall of the fixed vertical cylinder (30). The bottom of the movable vertical rod (27) is also connected to the float (26) through a pull rope. A solenoid valve is provided inside the liquid outlet (24) to control the reaction liquid to enter the lower end of the treatment bottle (5). A discharge port (31) is provided at the bottom of the treatment bottle (5) to discharge the reaction liquid.

9. The intelligent rapid detection device for selenium content in selenium-enriched tea according to claim 8, characterized in that: The buoyancy of the float (26) is greater than the elastic force of the connecting spring (29), and the movable vertical rod (27) forms an elastic sliding structure between the connecting spring (29) and the inner wall of the fixed vertical cylinder (30).

10. An intelligent rapid detection device for selenium content in selenium-enriched tea, characterized in that: Also disclosed is a method for using the intelligent rapid detection device for selenium content in selenium-enriched tea, the specific method is as follows: S1 Installation and Fixing: Place the tea sample in the treatment bottle (5), place it in the placement hole (2) of the pretreatment box (1), rotate the threaded locking block (3), fix the treatment bottle (5) through the limit block (4), and start the electric push rod (8) to make the sealing cover (6) fit the bottle top; S2 Sample crushing: Turn on the driving motor (7), rotate the square rod (701) to drive the crushing rod (12) to initially crush the sample above the filter plate (13), and the crushed sample passes through the filter plate (13) and is then ground again by the grinding roller (14); S3 Acidification and pressurized digestion: A mixture of nitric acid and perchloric acid is added from the first liquid inlet (9) and the second liquid inlet (10). When the drive motor (7) is running, the rotating rod (16) drives the piston block (19) to move up and down, and air is sucked in through the air inlet disk (11) and discharged into the processing bottle (5) from the air outlet (21), thereby increasing the air pressure to accelerate the digestion; S4 Liquid collection and detection: After the reaction is completed, the solenoid valve of the liquid outlet (24) is opened, and the liquid flows into the lower end of the processing bottle (5) through the Tesla valve channel (23). The float (26) drives the piston disc (28) to assist in unloading, and finally the liquid is discharged from the unloading port (31) to the detection box (32) for detection.

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