An automatic sampling and liquid preparation experiment table for tobacco extraction

Abstract

The application discloses a kind of tobacco extraction automatic sampling liquid preparation experiment table, including the rack with operation platform, and operation platform is equipped with pretreatment mechanism, oscillation mechanism, multiple feeding bracket and four-axis module mechanism.The application is by being equipped with double Z-axis, double rotating jaw four-axis module mechanism, different reagent bottle can be realized material taking, transfer, opening, injection and other actions, greatly simplify the structure of entire equipment;Simultaneously by being equipped with weighing, liquid injection mechanism and waste liquid treatment pretreatment mechanism, combined with special sampler, can ensure that the extraction powder and extraction liquid are taken accurately, and then oscillation is carried out by oscillator, and special filter is filtered, and extraction sample solution can be prepared quickly;The application is by integrating multiple operations such as material taking, weighing, oscillation, filtering in the same operation platform, using full-automatic control system, and the preparation of tobacco extraction sample solution of different samples can be completed by one key, and real-time collection of tobacco end data and sample solution data can be realized.

Description

Technical Field

[0001] This invention relates to the field of tobacco extraction experiments, and more particularly to an automated sampling and liquid preparation experimental platform for tobacco extraction. Background Technology

[0002] Because tobacco contains a wide variety of aroma components, and most of these aroma substances are present in extremely low concentrations, extraction is necessary before analysis. Therefore, pretreatment techniques are crucial. Each step in the extraction of tobacco aroma compounds is critical, as it directly affects the accuracy and completeness of qualitative and quantitative analysis of the analytes in instrumental chemical analysis.

[0003] Tobacco extraction is a solid-liquid extraction process. The key lies in preparing the sample solution. This requires taking a certain amount of tobacco powder, adding the extract, and then filtering the extract after shaking to allow for chemical analysis. Because tobacco cultivation is affected by factors such as variety, soil conditions, and weather, the quality of tobacco leaves varies. Tobacco extraction analysis requires multiple sampling and extraction analyses of tobacco leaves from different origins and batches. Current methods mainly rely on manual sampling and extraction, which is labor-intensive, inefficient, and prone to errors. Summary of the Invention

[0004] The purpose of this invention is to solve the above problems by providing an automated sampling and liquid preparation experimental platform for tobacco extraction. This platform can sample different tobacco leaf powders one by one and automatically complete the pre-extraction treatment. At the same time, it can scan and upload the data for archiving, which is convenient for subsequent analysis and processing.

[0005] The technical problem solved by this invention can be achieved by the following technical solutions:

[0006] An automated sampling and liquid preparation laboratory bench for tobacco extraction includes:

[0007] The machine frame has an operating platform installed in the middle. The operating platform has an extraction zone and an oscillation zone in the middle, and feeding zones on both sides. The machine frame contains a control cabinet and a control system. The control system has a built-in arithmetic unit.

[0008] Multiple feeding trays are installed in the feeding area. Each tray has a tray plate and a tray track. Each tray has a material tray on top. Each material tray contains a conical flask, a syringe, a filter, a sampler, and a test liquid bottle. The sampler and the test liquid bottle are equipped with corresponding data codes that can be scanned and read. The conical flask and the test liquid bottle are equipped with bottle caps.

[0009] The pretreatment mechanism, installed in the extraction area, includes a bottle cap placement area, a barcode scanning mechanism, a weighing mechanism, a waste liquid treatment mechanism, and a test liquid filtration mechanism. It also includes a scan placement area and a syringe placement area. The barcode scanning mechanism comprises a barcode scanner and a scanning mount. The barcode scanner is fixedly mounted on the operating platform via the scanning mount, with its scanning port facing upwards from the scan placement area. The weighing mechanism includes a weighing device and a weighing tray. The weighing tray has an annular ring in its center. The weighing device is fixedly mounted on a weighing bracket. A liquid injection device is located beside the weighing mechanism. The liquid injection device includes a liquid pump, a storage tank, and a liquid guide tube. The liquid pump is mounted below the operating platform via a liquid pump mounting bracket. The inlet of the liquid pump is connected to the storage tank via a pipe, and the outlet connects to the liquid guide tube. The liquid guide tube is a vertical pipe that passes upwards through the operating platform. The platform has a rotary joint at its upper end; the rotary joint is connected to a horizontally arranged liquid injection pipe, the length of which is the straight-line distance from the liquid guide pipe to the center of the annular ring, and the end of the liquid injection pipe has a downward-curved injection port; the waste liquid treatment mechanism includes a waste liquid rotating gripper and a clamping block, the waste liquid rotating gripper drives the clamping block to rotate, and a waste liquid pouring hole is opened on the operating platform below the clamping block, the lower end of the waste liquid pouring hole is connected to a waste liquid pipe, and the end of the waste liquid pipe is connected to a waste liquid collection tank; the test liquid filtration mechanism includes a test liquid bottle placement seat and a filter placement seat, the test liquid bottle placement seat is fixedly installed on the operating platform, the filter placement seat is located above the test liquid bottle placement seat, and the two are connected by a support plate; a waste treatment hole is opened on the operating platform in front of the installation position of the test liquid filtration mechanism;

[0010] An oscillation mechanism is installed in the oscillation zone via an oscillation bracket. The oscillation bracket is provided with a mounting plate, and an oscillator is mounted on the mounting plate. An oscillation disk is fixedly connected to the upper end face of the oscillator, and multiple conical bottle placement holes are opened on the oscillation disk.

[0011] A lifting and moving gripping mechanism, installed above the operating platform, is a four-axis module mechanism connected to the control system. It has two X-axis linear slide rails, respectively positioned above the front and rear of the operating platform. Each X-axis linear slide rail is fixedly mounted on the operating platform via two slide rail supports. A vertically arranged Y-axis linear slide rail is slidably connected above the two X-axis linear slide rails. The track of the Y-axis linear slide rail is located on its side. A first lifting shaft is mounted on the Y-axis linear slide rail, with a first lifting slider. A second lifting shaft is also mounted, with a second lifting slider. A second rotary electric gripper is fixedly mounted on the second lifting shaft, with its gripper facing downwards. A gripper mounting plate is located at the lower end of the second lifting shaft, mounting the first rotary electric gripper, whose gripper head faces sideways, allowing gripping in four directions: front, back, left, and right.

[0012] Preferably, the waste liquid rotary gripper is fixedly installed on the operating platform, and a U-shaped first connecting block is installed at each of the two grippers. A second connecting block is provided inside the U-shape of the first connecting block. The second connecting block is connected to the gripper. One of the upper and lower end faces of the second connecting block is fixedly installed on the first connecting block, and a spring is provided between the other face and the first connecting block. The opposite faces of the two grippers are provided with V-shaped clamping openings, and the bottom of the V-shaped clamping openings is an arc surface.

[0013] Preferably, the upper center of the test liquid bottle placement seat is provided with a placement hole, the filter placement seat is an annular seat with an opening, the opening is located on the other side opposite to the support plate, a spring adjusting block is provided on the opposite side of the opening, a groove is opened at the upper end of the support plate, the spring adjusting block is slidably embedded in the groove, an adjusting spring is provided at the rear and connected to the support plate, a pressure plate is provided above the spring adjusting block, the pressure plate is fixedly installed at the upper end of the support plate, a pin is fixedly provided at the upper end of the spring adjusting block, a long groove limiting hole is opened on the pressure plate, and the pin can be slidably inserted into the long groove limiting hole.

[0014] Preferably, the filter is a matching filter, including an upper cover and a lower cover, which are screwed together. Filter paper is provided on the sealing surface, and a filter paper support plate is provided below the filter paper. The upper cover is provided with a flared liquid inlet pipe at the top, and the lower cover is provided with a liquid outlet pipe at the bottom. The filter paper has conical liquid storage areas at both the top and bottom.

[0015] Preferably, the sampler is a dedicated powder sampler, including a screw feeder and a hopper. The screw feeder can be inserted into the hopper. The screw feeder has a feeding port at the top, a connecting plate in the middle connecting the screw, and a discharge port, and a conical sealing surface at the bottom. The hopper is wider at the top and narrower at the bottom, with a conical discharge port at the bottom that matches the conical sealing surface of the screw feeder.

[0016] Preferably, the upper part of the frame is an upper cover, and the lower part is a lower housing. The operating platform is installed on the lower housing. The front side of the upper cover is provided with an operating touch screen, a control button group, and a barcode display screen, and the top is provided with a three-color alarm light. The liquid storage tank, weighing bracket, waste liquid collection tank, and vibration bracket are all installed on the bottom surface of the lower housing. The barcode scanner is connected to the control system and connected to the barcode display screen.

[0017] Preferably, a waste collection box is provided below the waste treatment hole, and the waste collection box is placed on the inner bottom surface of the lower box.

[0018] Preferably, bracket limit switches are provided near both ends of the tray track, and positioning protrusions are provided on the tray.

[0019] Preferably, the control cabinet is equipped with a wireless interface.

[0020] Preferably, the lower housing has a main power switch and a handheld barcode scanner at the front end, a quick-connect port on the side, and support feet and wheels at the bottom.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] 1. By setting up a four-axis module mechanism with dual Z-axis and dual rotary grippers, it is possible to realize actions such as picking up, transferring, opening and injecting different reagent bottles, which greatly simplifies the structure of the entire equipment and reduces the size of the equipment.

[0023] 2. By setting up a pretreatment mechanism with weighing, liquid injection and waste liquid treatment, combined with a special sampler, the accuracy of the powder to be extracted and the extract can be ensured. Then, by shaking with a shaker and filtering with a special filter, the extract to be tested can be quickly prepared, which improves the preparation efficiency. At the same time, the sampler and filter can be cleaned and reused, which greatly improves the utilization rate and reduces the cost.

[0024] 3. This invention integrates multiple operations such as material collection, weighing, shaking, and filtering on the same operating platform and adopts a fully automatic control system. The preparation of tobacco extract test solutions for different samples can be completed with just one click. It can also collect tobacco dust data and test solution data in real time, which greatly reduces the labor intensity of manual labor and improves the quality and preparation efficiency of the extracted test solutions. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0026] Figure 2 This is a structural schematic diagram of frame 1.

[0027] Figure 3 This is a schematic diagram showing the disassembled parts of the present invention.

[0028] Figure 4 This is a top-down view of the operating platform.

[0029] Figure 5 This is a schematic diagram of the overall structure and cross-section of the filter.

[0030] Figure 6 This is a schematic diagram of the overall structure and disassembly of the sampler.

[0031] Figure 7 This is a 3D schematic diagram of the operating platform.

[0032] Figure 8 This is a front-view stereoscopic diagram of the pre-processing mechanism.

[0033] Figure 9 This is a rear-view stereoscopic diagram of the pre-processing mechanism.

[0034] Figure 10 This is a three-dimensional schematic diagram of the oscillation mechanism.

[0035] Figure 11 This is a three-dimensional schematic diagram of the lifting and moving clamping mechanism.

[0036] Figure 12 This is a schematic diagram of the overall and disassembled clamping mechanism.

[0037] In the diagram, 1 is the frame, 11 is the upper cover, 12 is the lower housing, 13 is the operating platform, 14 is the support legs, 15 is the rollers, 111 is the operating touch screen, 112 is the control button group, 113 is the barcode display screen, 114 is the three-color alarm light, 121 is the control cabinet, 122 is the main power switch, 123 is the handheld barcode scanner, 124 is the quick-connect connector, 131 is the extraction zone, 132 is the oscillation zone, 133 is the feeding zone, 134 is the waste liquid dumping hole, 135 is the waste liquid pipe, and 136 is the waste treatment hole.

[0038] 2. Pre-treatment mechanism; 21. Bottle cap placement position; 22. Scanning mechanism; 23. Weighing mechanism; 24. Waste liquid treatment mechanism; 25. Test liquid filtration mechanism; 26. Placement position for scanning; 27. Syringe placement position; 28. Injection device; 221. Scanner; 222. Scanning fixture; 231. Weigher; 232. Weighing tray; 233. Annular ring; 234. Weighing bracket; 241. Waste liquid rotating gripper; 242. Clamping block; 243. First connecting block. 244 Second connecting block, 245 Spring, 246 V-shaped clamp, 251 Test liquid bottle placement seat, 252 Filter placement seat, 253 Support plate, 254 Placement hole, 255 Opening, 256 Spring adjusting block, 257 Pressure plate, 258 Pin, 259 Long groove limiting hole, 281 Liquid pump, 282 Liquid storage tank, 283 Liquid guide pipe, 284 Liquid pump mounting bracket, 285 Rotary joint, 286 Liquid injection pipe, 287 Liquid injection port;

[0039] 3. Oscillating mechanism; 31. Oscillating bracket; 32. Mounting plate; 33. Oscillator; 34. Oscillating disk; 35. Conical flask placement hole;

[0040] 4. Feeding bracket; 41. Pallet; 42. Pallet track; 43. Bracket limit switch; 44. Positioning protrusion.

[0041] 5. Material tray, 51. Erlenmeyer flask, 52. Syringe, 53. Filter, 54. Sampler, 55. Test liquid bottle, 531. Top cover, 532. Bottom cover, 533. Filter paper, 534. Filter paper support plate, 535. Inlet pipe, 536. Outlet pipe, 541. Screw feeder, 542. Material bin, 543. Conical outlet;

[0042] 6 Lifting and moving clamping mechanism, 61 X-axis linear slide rail, 62 Y-axis linear slide rail, 63 first lifting shaft, 64 second lifting shaft, 65 second rotary electric gripper, 66 first rotary electric gripper, 611 slide rail support, 631 first lifting slider, 641 second lifting slider, 642 gripper mounting plate;

[0043] 7 Waste liquid collection box, 8 Waste collection box. Detailed Implementation

[0044] The present invention will be further described in detail below with reference to embodiments, but the implementation of the present invention is not limited thereto.

[0045] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0046] like Figures 1-12 In a preferred embodiment of the present invention, a frame 1 is included, with an upper cover 11 at the top and a lower housing 12 at the bottom, and an operating platform 13 installed in the middle. An extraction zone 131 and a shaking zone 132 are located in the middle of the operating platform 13, with feeding zones 133 on both sides. A pretreatment mechanism 2 is provided on the extraction zone 131, which can scan reagent bottles, dispense and weigh solutions, filter solutions, and treat waste liquids. A shaking mechanism 3 is provided in the shaking zone 132 to shake and mix the reagent bottles after sample loading by the pretreatment mechanism 2. Figure 1-3 As shown, the front of the upper cover 11 is equipped with an operation touch screen 111, a control button group 112, and a barcode display screen 113, and the top is equipped with a three-color alarm light 114. The lower housing 12 contains a control cabinet 121, which houses a PLC control system. The operation touch screen 111, control button group 112, barcode display screen 113, and three-color alarm light 114 are all connected to the control system.

[0047] like Figure 3 , 4 and Figure 7 As shown, the feeding area 133 is equipped with multiple feeding trays 4 with sliding rails for placing trays 5, which contain reagent bottles or test tubes. The feeding trays 4 can be used for manual or automatic feeding. In automatic feeding mode, the feeding tray 4 has a tray plate 41 and a tray rail 42. Tray limit switches 43 are located near both ends of the tray rail 42. The tray 5 is placed on the tray plate 41, which has positioning protrusions 44. The lower end of the tray 5 has a groove corresponding to the positioning protrusions 44 to prevent slippage. The feeding tray 4 connects to the feeding rail of an external feeding cabinet. An external robotic arm can push the tray plate 41 and tray 5 together onto the tray rail 42, and the limit switches 43 determine whether the push is complete. After the reagent bottles or test tubes in the tray 5 are removed, the robotic arm pulls out the tray plate 41 and the empty tray 5 together. Above the operating platform 13 is a lifting and moving clamping mechanism 6, used to clamp and move reagent bottles or test tubes.

[0048] In this embodiment, the loading area 133 is equipped with four loading trays 4, which can hold four types of trays 5. The four trays 5 respectively contain conical flasks 51, syringes 52, filters 53, samplers 54, and test liquid bottles 55. The syringes 52 and filters 53 are placed in the same tray 5. Corresponding placement holes are provided on the trays 5 to accommodate different shapes of reagent bottles or test tubes. The samplers 54 and test liquid bottles 55 are equipped with scannable corresponding data codes (not shown in the figure). The conical flasks 51, syringes 52, and test liquid bottles 55 are all commercially available reagent bottles, and both are equipped with caps. Figure 5 As shown, filter 53 is a matching filter, including an upper cover 531 and a lower cover 532. The upper cover 531 and the lower cover 532 are screwed together, and filter paper 533 is provided on the sealing surface. A filter paper support plate 534 is provided below the filter paper 533. The upper cover 531 has a flared liquid inlet pipe 535 at its upper end, and the lower cover 532 has a liquid outlet pipe 536 at its lower end. The filter paper 533 has conical liquid storage areas at both the upper and lower positions. Figure 6 As shown, the sampler 54 is a dedicated powder sampler used to hold the tobacco powder to be extracted. It includes a screw feeder 541 and a hopper 542. The screw feeder 541 can be inserted into the hopper 542. The screw feeder 541 has a feeding port at the top, a connecting plate in the middle connecting to the screw, and a discharge port (not shown in the figure). The bottom has a conical sealing surface. The hopper 542 is wider at the top and narrower at the bottom, with a conical discharge port 543 at the bottom, which matches the conical sealing surface of the screw feeder 541. When tobacco powder needs to be extracted, the lifting and moving clamping mechanism 6 holds the hopper 542 of the sampler 54 stationary, raises the screw feeder 541 upward by 1-2 mm, and then rotates counterclockwise. The tobacco powder falls from the conical discharge port 543. When the required amount of material is extracted, the screw feeder 541 is pressed downward to seal it.

[0049] like Figure 8 , 9 As shown, the pretreatment mechanism 2 is installed on the operating platform 13 and includes a bottle cap placement position 21, a barcode scanning mechanism 22, a weighing mechanism 23, a waste liquid treatment mechanism 24, and a test liquid filtration mechanism 25. It also includes a scan placement position 26 and a syringe placement position 27. The scan placement position 26 is used to place the sampler 54 and the test liquid bottle 55, while the syringe placement position 27 is used to place the syringe 52. Both the test liquid bottle 55 and the syringe 52 are picked up from the material tray 5 by the lifting and moving clamping mechanism 6 and placed on the scan placement position 26 and the syringe placement position 27, respectively.

[0050] The cap placement position 21 is mainly used to temporarily place the caps of the conical flask 51 and the caps of the test liquid bottle 55. In this embodiment, two cap placement positions for the conical flask 51 and one cap placement position for the test liquid bottle 55 are provided.

[0051] The scanning mechanism 22 mainly includes a barcode scanner 221 and a scanning mount 222. The barcode scanner 221 is a commercially available barcode scanner, such as the Honeywell Vuquest 3310g barcode scanner. This barcode scanner uses Adaptus 6.0 imaging technology, has good barcode scanning and digital image acquisition capabilities, and features intelligent multi-interface functionality. The barcode scanner 221 is fixedly mounted on the scanning mount 222, which is in turn fixedly mounted on the operating platform 13. The scanning port of the barcode scanner 221 faces directly above the sampler 54 and the test liquid bottle 55. After the sampler 54 and the test liquid bottle 55 are placed on the sampler 54, the scanning port scans the bottle. The barcode scanner 221 is connected to the control system and the barcode display screen 113. It reads and records the smoke information in the sampler 54 and uploads it along with the corresponding code of the test liquid bottle 55 to the control cabinet 121. The control cabinet 121 is equipped with a wireless interface, which can upload data to an external control center via a wireless network for convenient experimental analysis and data storage.

[0052] The weighing mechanism 23 includes a weighing device 231 and a weighing tray 232. The weighing tray 232 is placed on the weighing device 231. A ring 233 is provided in the middle of the weighing tray 232 for placing the conical flask 51 for easy positioning. The weighing device 231 is fixedly mounted on a weighing bracket 234. A liquid injection device 28 is provided next to the weighing mechanism 23. The liquid injection device 28 includes a liquid pump 281, a storage tank 282, and a liquid guide pipe 283. The liquid pump 281 is mounted below the operating platform 13 via a liquid pump mounting bracket 284. The inlet of the liquid pump 281 is connected to the storage tank 282 via a pipe (not shown in the figure), and the outlet (not shown in the figure) is connected to the liquid guide pipe 283. The storage tank 282 is placed on the bottom surface of the lower housing 12. The liquid guide pipe 283 is a vertical pipe that passes upward through the operating platform 13. The upper end of the liquid guide pipe 283 is provided with a rotating connector. The head 285 is connected to a horizontally arranged injection tube 286. The length of the injection tube 286 is the straight-line distance from the center of the guide tube 283 to the center of the annular ring 233. The end is provided with a downwardly curved injection port 287. The rotary joint 285 is connected to the control system. When it is necessary to inject liquid into the conical bottle, the injection tube 286 is rotated until the injection port 287 is directly facing the center of the annular ring 233. At other times, it is rotated to the front of the weighing mechanism 23, away from the scanning placement position 26 and the syringe placement position 27, so as to avoid interfering with the operation of the lifting and moving clamping mechanism 6.

[0053] The waste liquid treatment mechanism 24 includes a waste liquid rotating gripper 241 and two gripping blocks 242. The waste liquid rotating gripper 241 is fixedly installed on the operating platform 13. A U-shaped first connecting block 243 is installed at each gripper. A second connecting block 244 is provided inside the U-shape of the first connecting block 243, and the second connecting block 244 connects to the gripping block 242. In the flipped state, one of the upper and lower end faces of the second connecting block 244 is fixedly installed on the first connecting block 243, and a spring 245 is provided between the other end face and the first connecting block 243 (the lower end face of the upper second connecting block 244 is fixed, and the upper end face is provided with the spring 245; the upper end face of the lower second connecting block 244 is fixed, and the lower end face is provided with the spring 245). The opposite faces of the two gripping blocks 242 are provided with V-shaped clamping openings 246. The bottom of the V-shaped clamping openings 246 is an arc surface, which facilitates clamping the conical bottle 51. Spring 245 provides fine-tuning when gripping conical flask 51 to prevent breakage. The two clamping blocks 242 can be made of soft materials such as silicone, rubber, or plastic. A waste liquid pouring hole 134 is provided on the operating platform 13 below the clamping blocks 242. A waste liquid pipe 135 is connected to the lower end of the waste liquid pouring hole 134, and the end of the waste liquid pipe 135 is connected to a waste liquid collection tank 7, which is placed on the inner bottom surface of the lower housing 12.

[0054] The test liquid filtration mechanism 25 includes a test liquid bottle placement seat 251 and a filter placement seat 252. The test liquid bottle placement seat 251 is fixedly installed on the operating platform 13, and the filter placement seat 252 is positioned above the test liquid bottle placement seat 251. The two are connected by a support plate 253. The upper center of the test liquid bottle placement seat 251 has a placement hole 254, which matches the diameter of the test liquid bottle 55. The filter placement seat 252 is an annular seat with an opening 255, which is located on the opposite side of the support plate 253, facilitating the insertion of the test liquid bottle 55 into the placement hole 254. A spring adjusting block 256 is provided on the opposite side of the opening 255. The spring adjusting block 256 can be slidably embedded in a groove opened at the upper end of the support plate 253. An adjusting spring (not shown in the figure) is provided at the rear and connected to the support plate 253. A pressure plate 257 is provided above the spring adjusting block 256 and is fixedly installed at the upper end of the support plate 253. A pin 258 is fixedly provided at the upper end of the spring adjusting block 256. A long groove limiting hole 259 is opened on the pressure plate 257. The pin 258 can be slidably inserted into the long groove limiting hole 259 to limit the sliding range of the spring adjusting block 256. After the filter 53 is placed in, the spring adjusting block 256 can press the filter 53 tightly. After the test liquid bottle 55 is placed in the test liquid bottle holder 251, the filter 53 is placed on top. The shaken mixture is drawn with a syringe 52, injected into the filter 53 for filtration, and the test liquid is obtained. A waste disposal port 136 is provided on the operating platform 13 in front of the installation position of the test liquid filtration mechanism 25. A waste collection box 8 is provided below the waste disposal port 136 and is placed on the inner bottom surface of the lower box 12. Used syringes 52 and filters 53 are picked up by the lifting and moving clamping mechanism 6, placed above the waste disposal port 136, and thrown into the waste collection box 8.

[0055] like Figure 10 As shown, the oscillation mechanism 3 is mounted on the inner bottom surface of the lower housing 12 via an oscillation bracket 31. An mounting plate 32 is provided on the oscillation bracket 31, and the oscillator 33 is fixedly mounted on the mounting plate 32. An oscillation disk 34 is fixedly connected to the upper end of the oscillator 33. Multiple conical flask placement holes 35 are provided on the oscillation disk 34 for placing conical flasks 51. The oscillator 33 is connected to the control system; starting the oscillator 33 will oscillate and mix the liquid in the conical flasks 51.

[0056] like Figure 11 , 12As shown, the lifting and moving gripping mechanism 6 is a four-axis module mechanism connected to the control system. The control system has a built-in arithmetic unit, which can accurately control the lifting and moving gripping mechanism 6 to grip according to the gripping sequence based on external input. The lifting and moving gripping mechanism 6 has two X-axis linear slide rails 61, which are respectively set above the front and rear of the operating platform 13. Each X-axis linear slide rail 61 is fixedly installed on the operating platform 13 by two slide rail supports 611. A vertically set Y-axis linear slide rail 62 is slidably connected above the two X-axis linear slide rails 61. The track of the Y-axis linear slide rail 62 is set on the side. A first lifting shaft 63 is installed on the Y-axis linear slide rail 62. A second lifting shaft 64 is installed on the first lifting slider 631 of the first lifting shaft 63. A second rotary electric gripper 65 is fixedly installed on the second lifting slider 641 of the second lifting shaft 64. The gripper of the second rotary electric gripper 65 faces downward, so it can grip from above. The lower end of the second lifting shaft 64 is provided with a gripper mounting plate 642, and the lower end of the gripper mounting plate 642 is equipped with a first rotary electric gripper 66. The gripper head of the first rotary electric gripper 66 faces the side and can grip in four directions: front, back, left, and right. Limit switches are provided on the side of each linear slide rail to ensure the safety and accuracy of gripping movement in all directions.

[0057] The front end of the lower housing 12 is equipped with a main power switch 122 and a handheld barcode scanner 123; the side is equipped with a quick-connect socket 124 for quick docking with an external feeding mechanism; and the bottom is equipped with support legs 14 and rollers 15.

[0058] The specific steps for preparing the tobacco extract test solution using this invention are as follows:

[0059] 1. Place the tray 5 containing the conical flask 51, syringe 52, filter 53, sampler 54, and test liquid bottle 55 on the four loading racks 4 according to their respective positions.

[0060] 2. Press the main power switch 122 to start the control system and control the X-axis linear slide rail 61 and Y-axis linear slide rail 62 of the lifting and moving clamping mechanism 6 to move to above the loading bracket 4 of the sampler 54. The first lifting shaft 63 drives the first rotary electric gripper 66 to move down. The X-axis linear slide rail 61 drives the first rotary electric gripper 66 to approach the hopper 542 of the sampler 54 to be clamped. Then the first rotary electric gripper 66 clamps the sampler. The first lifting shaft 63 moves up. The X-axis linear slide rail 61 and Y-axis linear slide rail 62 move the sampler 54 to above the scanning placement position 26. The first lifting shaft 63 moves down to place the sampler 54. The first rotary electric gripper 66 releases the sampler. The barcode scanning mechanism 22 reads the code of the sampler 54 and uploads it to the control system.

[0061] 3. The control system controls the lifting and moving clamping mechanism 6. Following the method in step 2, the first rotary electric gripper 66 clamps the conical bottle 51 and places the conical bottle 51 in the annular ring 233 of the weighing mechanism 23. While maintaining the clamping state of the first rotary electric gripper 66, the second lifting shaft 64 drives the second rotary electric gripper 65 to move down to the outside of the bottle cap of the conical bottle 51. The second rotary electric gripper 65 starts to clamp the bottle cap. The second lifting shaft 64 drives the second rotary electric gripper 65 to pull the bottle cap of the conical bottle 51 upward. The X-axis linear slide rail 61 and the Y-axis linear slide rail 62 move to the position above the bottle cap placement position 21 corresponding to the conical bottle cap placement position. The second lifting shaft 64 drives the second rotary electric gripper 65 to move down. The second rotary electric gripper 65 releases the gripper and places the bottle cap of the conical bottle 51.

[0062] 4. The control system controls the lifting and moving clamping mechanism 6 to clamp the sampler 54 on the scanning placement position 26 to the top of the conical flask 51 placed in the annular ring 233 of the weighing mechanism 23 via the first rotary electric gripper 66, and maintains the clamping state; then the control system controls the second lifting shaft 64 of the lifting and moving clamping mechanism 6 to drive the second rotary electric gripper 65 to move down to the upper part of the screw feeder 541 of the sampler 54, and the second rotary electric gripper 65 starts to clamp the screw feeder 541, and then the second lifting shaft 64 moves down to the top of the screw feeder 541 of the sampler 54. The lowering shaft 64 drives the second rotary electric gripper 65 to pull it slightly upward. The second rotary electric gripper 65 rotates counterclockwise, and the tobacco powder falls from the conical outlet 543 of the sampler 54 into the conical flask 51. The weighing device 231 weighs the tobacco powder in the conical flask 51 at the same time. When the required weight is reached, the second lifting shaft 64 drives the second rotary electric gripper 65 to press down, pressing the screw feeder 541 into the hopper 542. The lifting and moving clamping mechanism 6 puts the sampler 54 back into the material tray 5 on which the sampler 54 is fed.

[0063] 5. Start the rotary joint 285 of the liquid injection device 28, rotate the liquid injection tube 286 to the liquid injection port 287 to the conical flask 51 placed on the annular ring 233, start the liquid pump 281 to inject the extract into the conical flask 51, and weigh it at the same time with the weighing device 231. When the required weight for the test is reached, stop the liquid pump 281, and the rotary joint 285 drives the liquid injection tube 286 to rotate away from the weighing area.

[0064] 6. The control system controls the lifting and moving clamping mechanism 6 to move to the bottle cap placement position 21, clamps the bottle cap of the conical bottle 51 placed in step 3, and puts it back on the conical bottle 51 on the weighing mechanism 23.

[0065] 7. The lifting and moving clamping mechanism 6 clamps the conical flask 51 containing tobacco powder and extractant onto the oscillation mechanism 3, and places the conical flask 51 into the conical flask placement hole 35 of the oscillation plate 34. The oscillation mechanism 3 then fully oscillates and mixes the substances in the flask, so that the extracted components of the tobacco powder dissolve into the extractant through the phase interface for subsequent analysis and processing.

[0066] 8. Multiple conical flasks 51 can be placed in the oscillating plate 34. To ensure sufficient mass transfer and mixing between the tobacco and the extract, a sufficiently long oscillation time is required. The control system records the placement position of the conical flask 51 and matches it with the code of the feeder 54. The lifting and moving clamping mechanism 6, according to the clamping sequence given by the arithmetic unit of the control system, clamps the conical flask 51 that was placed in the oscillating plate 34 first and places it above the waste liquid treatment mechanism 24. It ensures that the clamping block 242 of the waste liquid treatment mechanism 24 is in a horizontal position, and then lowers the conical flask 51. The waste liquid rotating jaw 241 is controlled to clamp the body of the conical flask 51, and the cap is pulled out by the second rotating electric jaw 65 and placed on the cap placement position 21.

[0067] 9. The lifting and moving clamping mechanism 6 clamps a test liquid bottle 55 from the tray 5 containing the test liquid bottle 55 and places it on the scanning placement position 26. The scanning mechanism 22 reads the code of the test liquid bottle 55 and uploads it to the control system. The control system records the code of the test liquid bottle 55 and matches it with the conical bottle placement hole 35 corresponding to the oscillation mechanism 3. Then, it matches the sampler 54 corresponding to the conical bottle 51 at the hole position and imports the smoke information of the sampler 54 into the information storage area of ​​the test liquid bottle 55. The lifting and moving clamping mechanism 6 moves the test liquid bottle 55 to the test liquid bottle placement seat 251 of the test liquid filtration mechanism 25, maintains the clamping state, and removes the bottle cap of the test liquid bottle 55 through the second rotating electric gripper 65 and places it on the test liquid bottle cap placement position corresponding to the bottle cap placement position 21.

[0068] 10. The lifting and moving clamping mechanism 6 clamps a filter 53 from the material tray 5 containing the filter 53 and places it onto the filter placement seat 252 on the liquid to be tested filtration mechanism 25. The outlet tube 536 of the filter 53 is inserted into the bottle mouth of the liquid to be tested bottle 55.

[0069] 11. The first rotary electric gripper 66 of the lifting and moving clamping mechanism 6 clamps a syringe 52 from the tray containing the syringe 52, moves it above the waste liquid treatment mechanism 24, lowers it and maintains the clamping state, and clamps the upper part of the piston of the syringe 52 by the second rotary electric gripper 65. The second lifting shaft 64 drives the second rotary electric gripper 65 to move upward, and the syringe 52 draws the oscillating mixture in the conical flask 51. The lifting and moving clamping mechanism 6 lifts the syringe 52 and moves it above the test liquid filtration mechanism 25, aligning it with the inlet pipe 535. The second lifting shaft 64 drives the second rotary electric gripper 65 to push downward, injecting the oscillating mixture into the filter 53. After being filtered by the filter 53, the mixture flows into the test liquid bottle 55.

[0070] 12. The lifting and moving clamping mechanism 6 moves the syringe 52 above the waste treatment hole 136, releases it, and the syringe 52 falls into the waste collection box 8. The lifting and moving clamping mechanism 6 clamps the filter 53 on the waste liquid treatment mechanism 24 above the waste treatment hole 136, releases it, and the filter 53 falls into the waste collection box 8. The syringe 52 and the filter 53 can be recycled, cleaned, or have their filter paper replaced before being put back into use. The waste liquid rotating jaw 241 of the waste liquid treatment mechanism 24 simultaneously controls the clamping block 242 to rotate, pouring the waste liquid from the conical bottle 51 into the waste liquid collection box 7. The lifting and moving clamping mechanism 6 then sends the empty conical bottle 51 back into the material tray 5 of the conical bottle 51.

[0071] 13. The lifting and moving clamping mechanism 6 closes the cap of the test liquid bottle 55 in the cap placement position 21 onto the test liquid bottle 55 on the test liquid filtration mechanism 25. Then, the lifting and moving clamping mechanism 6 clamps the test liquid bottle 55 onto the material tray 5 of the test liquid bottle 55, thus completing the preparation of the test liquid. After the material tray 5 of the test liquid bottle 55 is filled with the test liquid, the control system will issue an alarm prompt, replace all the material trays on the feeding bracket 4, or automatically feed and discharge the material through the external feeding cabinet.

[0072] The automatic sampling experimental platform of this invention can greatly reduce the labor intensity of manual labor and greatly improve the efficiency of pre-extraction treatment. At the same time, it can be combined with big data to quickly import sample data into extraction experimental data, avoiding errors caused by manual import. The whole machine of this invention is small in size and light in weight, and can be moved and used as needed, reducing the investment of experimental personnel and experimental space.

[0073] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the protection scope of the present invention.

Claims

1. An automated sampling and liquid preparation experimental platform for tobacco extraction, characterized in that it comprises: The machine frame has an operating platform installed in the middle. The operating platform has an extraction zone and an oscillation zone in the middle, and feeding zones on both sides. The machine frame contains a control cabinet and a control system. The control system has a built-in arithmetic unit. Multiple feeding trays are installed in the feeding area. Each tray has a tray plate and a tray track. Each tray has a material tray on top. Each material tray contains a conical flask, a syringe, a filter, a sampler, and a test liquid bottle. The sampler and the test liquid bottle are equipped with corresponding data codes that can be scanned and read. The conical flask and the test liquid bottle are equipped with bottle caps. The pretreatment mechanism, installed in the extraction area, includes a bottle cap placement area, a barcode scanning mechanism, a weighing mechanism, a waste liquid treatment mechanism, and a test liquid filtration mechanism. It also includes a scan placement area and a syringe placement area. The barcode scanning mechanism comprises a barcode scanner and a scanning mount. The barcode scanner is fixedly mounted on the operating platform via the scanning mount, with its scanning port facing upwards from the scan placement area. The weighing mechanism includes a weighing device and a weighing tray. The weighing tray has an annular ring in its center. The weighing device is fixedly mounted on a weighing bracket. A liquid injection device is located beside the weighing mechanism. The liquid injection device includes a liquid pump, a storage tank, and a liquid guide tube. The liquid pump is mounted below the operating platform via a liquid pump mounting bracket. The inlet of the liquid pump is connected to the storage tank via a pipe, and the outlet connects to the liquid guide tube. The liquid guide tube is a vertical pipe that passes upwards through the operating platform. The platform has a rotary joint at its upper end; the rotary joint is connected to a horizontally arranged liquid injection pipe, the length of which is the straight-line distance from the liquid guide pipe to the center of the annular ring, and the end of the liquid injection pipe has a downward-curved injection port; the waste liquid treatment mechanism includes a waste liquid rotating gripper and a clamping block, the waste liquid rotating gripper drives the clamping block to rotate, and a waste liquid pouring hole is opened on the operating platform below the clamping block, the lower end of the waste liquid pouring hole is connected to a waste liquid pipe, and the end of the waste liquid pipe is connected to a waste liquid collection tank; the test liquid filtration mechanism includes a test liquid bottle placement seat and a filter placement seat, the test liquid bottle placement seat is fixedly installed on the operating platform, the filter placement seat is located above the test liquid bottle placement seat, and the two are connected by a support plate; a waste treatment hole is opened on the operating platform in front of the installation position of the test liquid filtration mechanism; An oscillation mechanism is installed in the oscillation zone via an oscillation bracket. The oscillation bracket is provided with a mounting plate, and an oscillator is mounted on the mounting plate. An oscillation disk is fixedly connected to the upper end face of the oscillator, and multiple conical bottle placement holes are opened on the oscillation disk. A lifting and moving gripping mechanism, installed above the operating platform, is a four-axis module mechanism connected to the control system. It has two X-axis linear slide rails, respectively positioned above the front and rear of the operating platform. Each X-axis linear slide rail is fixedly mounted on the operating platform via two slide rail supports. A vertically arranged Y-axis linear slide rail is slidably connected above the two X-axis linear slide rails. The track of the Y-axis linear slide rail is located on its side. A first lifting shaft is mounted on the Y-axis linear slide rail, with a first lifting slider. A second lifting shaft is also mounted, with a second lifting slider. A second rotary electric gripper is fixedly mounted on the second lifting shaft, with its gripper facing downwards. A gripper mounting plate is located at the lower end of the second lifting shaft, mounting the first rotary electric gripper, with its gripper head facing sideways, allowing gripping in four directions: front, back, left, and right. The waste liquid rotary gripper is fixedly installed on the operating platform. A U-shaped first connecting block is installed at each of the two grippers. A second connecting block is provided inside the U-shape of the first connecting block. The second connecting block is connected to the gripper. One of the upper and lower end faces of the second connecting block is fixedly installed on the first connecting block. A spring is provided between the other side and the first connecting block. A V-shaped clamping opening is provided on the opposite face of the two grippers. The bottom of the V-shaped clamping opening is an arc surface. The upper center of the test liquid bottle placement seat has a placement hole. The filter placement seat is an annular seat with an opening. The opening is located on the opposite side of the support plate. A spring adjusting block is provided on the opposite side of the opening. A groove is opened at the upper end of the support plate. The spring adjusting block can be slidably embedded in the groove. An adjusting spring is provided at the rear and connected to the support plate. A pressure plate is provided above the spring adjusting block. The pressure plate is fixedly installed at the upper end of the support plate. A pin is fixedly provided at the upper end of the spring adjusting block. A long groove limiting hole is opened on the pressure plate. The pin can be slidably inserted into the long groove limiting hole.

2. The automated sampling and liquid preparation experimental platform for tobacco extraction according to claim 1, characterized in that: The filter is a matching filter, including an upper cover and a lower cover. The upper cover and the lower cover are screwed together, and filter paper is provided on the sealing surface. A filter paper support plate is provided below the filter paper. The upper cover is provided with a flared liquid inlet pipe at the top, and the lower cover is provided with a liquid outlet pipe at the bottom. The filter paper has conical liquid storage areas at both the top and bottom.

3. The automated sampling and liquid preparation experimental platform for tobacco extraction according to claim 1, characterized in that: The sampler is a dedicated powder sampler, including a screw feeder and a hopper. The screw feeder can be inserted into the hopper. The screw feeder has a feeding port at the top, a connecting plate in the middle connecting the screw, and a discharge port. The bottom has a conical sealing surface. The hopper is wider at the top and narrower at the bottom, with a conical discharge port at the bottom that matches the conical sealing surface of the screw feeder.

4. The automated sampling and liquid preparation experimental platform for tobacco extraction according to claim 1, characterized in that: The upper part of the frame is an upper cover, and the lower part is a lower box. The operating platform is installed on the lower box. The front side of the upper cover is equipped with an operating touch screen, a control button group and a barcode display screen, and the top is equipped with a three-color alarm light. The liquid storage tank, weighing bracket, waste liquid collection tank and vibration bracket are all installed on the bottom surface of the lower box. The barcode scanner is connected to the control system and connected to the barcode display screen.

5. The automated sampling and liquid preparation experimental platform for tobacco extraction according to claim 4, characterized in that: A waste collection box is provided below the waste treatment hole, and the waste collection box is placed on the inner bottom surface of the lower box.

6. The automated sampling and liquid preparation experimental platform for tobacco extraction according to claim 1, characterized in that: The tray is equipped with a bracket limit switch near both ends of the tray track, and the tray is equipped with positioning protrusions.

7. The automated sampling and liquid preparation experimental platform for tobacco extraction according to claim 1, characterized in that: The control cabinet is equipped with a wireless interface.

8. The automated sampling and liquid preparation experimental platform for tobacco extraction according to claim 4, characterized in that: The front end of the lower housing is equipped with a main power switch and a handheld barcode scanner, the side is equipped with a quick-connect port, and the bottom is equipped with support feet and casters.

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