An automatic distillation apparatus

Abstract

This utility model discloses an automatic distillation apparatus, comprising: a chassis, a distillation module mounted on the chassis, and a distillate collection module; the chassis is provided with several sets of distillation working positions, each set of distillation working positions having a first distillation vessel placement slot and a distillate collection bottle placement slot to respectively place the distillation vessel and the distillate collection bottle, and each set of distillation working positions is also equipped with a condenser clamping device to install the condenser; wherein, a heating jacket is installed in the first distillation vessel placement slot, the shape of the distillate collection bottle placement slot corresponds to the shape of the distillate collection bottle and is hollowed out on one side, so that the distillate collection bottle is horizontally embedded into the slot and placed in close contact, and a liquid level sensor is installed at the bottom of the distillate collection bottle placement slot to monitor the liquid level of the distillate. This utility model can achieve a more safe, efficient, and automated automatic distillation process and has extremely high flexibility.

Description

Technical Field

[0001] This utility model relates to the field of laboratory analysis and testing equipment technology, specifically an automatic distillation apparatus. Background Technology

[0002] Distillation, as an important separation technique, is widely used in numerous fields such as chemical engineering, pharmaceuticals, food processing, environmental monitoring, and scientific research laboratories. Its principle is based on the difference in boiling points of components in a mixed liquid or liquid-solid system. By heating, the lower-boiling-point components evaporate, followed by condensation to achieve separation. Compared to other separation methods such as extraction, filtration, and crystallization, distillation has the significant advantage of not requiring the introduction of external solvents, thus avoiding the introduction of new impurities.

[0003] Traditional distillation apparatuses, such as the simple atmospheric distillation facilities commonly found in early laboratories that used electric furnaces and heating mantles to provide heat, along with glassware such as condensers, thermometers, and receivers, have many drawbacks. During operation, researchers need to closely monitor the process and visually determine key technical indicators such as the initial and final boiling points. This is not only labor-intensive, but the accuracy of the judgments is also highly susceptible to human factors, leading to significant errors in the experimental results.

[0004] Currently available automated distillation devices are limited to controlling the distillate weight. This control relies on a preset weight endpoint for the distillate collection flask. A weight sensor on the flask roughly weighs the flask, and the heating power automatically shuts off when the preset endpoint is reached. However, this system is limited by the accuracy of the preset weight endpoint and the fact that the flask cannot detach from the heating surface after the power is off, making it prone to dry burning and compromising experimental results. Furthermore, processes such as adding samples or reaction solutions, adjusting the pH of specific experimental samples, and connecting / removing the distillation flask and condenser cannot be automated. The level of automation is low, and these devices cannot be integrated into smart laboratories as effective functional modules. Utility Model Content

[0005] The purpose of this invention is to provide an automatic distillation apparatus that achieves a higher degree of safety, efficiency, and automation in the automatic distillation process, while also possessing exceptional flexibility. To achieve the above objective, this invention adopts the following technical solution: This utility model discloses an automatic distillation apparatus, comprising: a chassis, a distillation module and a distillate collection module mounted on the chassis.

[0006] The distillation module includes a heating mantle, a distillation vessel, and a condenser. The distillate collection module includes a distillate collection bottle.

[0007] The chassis is provided with several sets of distillation work positions. Each set of distillation work positions is provided with a first distillation kettle placement slot and a distillate collection bottle placement slot to place the distillation kettle and the distillate collection bottle respectively. Each set of distillation work positions is also equipped with a condenser clamping device to install the condenser.

[0008] The heating jacket is installed in the first distillation vessel placement slot. The shape of the distillate collection bottle placement slot corresponds to the shape of the distillate collection bottle and one side is hollowed out, so that the distillate collection bottle is embedded into the slot horizontally and placed in close contact. A liquid level sensor is installed at the bottom of the distillate collection bottle placement slot to monitor the liquid level of the distillate.

[0009] Furthermore, the distillate collection bottle is composed of an inner bottle and an outer bottle, wherein the bottom of the inner bottle is hollowed out, the top of the outer bottle is hollowed out and the outer bottle is fitted over the inner bottle, and the bottom of the outer bottle is provided with an opening, on which a glass plate is provided, and the liquid level sensor monitors the liquid level of the distillate through the opening.

[0010] Furthermore, the bottom of the distillate collection bottle is rectangular, and the connection between the bottle mouth and the bottle body is an inclined surface that slopes to all four sides. One of the inclined surfaces is provided with a distillate collection port, and the distillate collection port is provided with a corresponding retractable plate to open or close the distillate collection port.

[0011] A distillate tube is installed on the condenser tube, and distillate is injected into the distillate collection flask through the distillate tube. The chassis has a first distillate tube hole corresponding to each distillation working position, and a second distillate tube hole is provided on the inner wall of the distillate collection flask placement slot. The chassis has a tube bundle groove inside, and the distillate tube extends into the interior of the chassis from the first distillate tube hole and is arranged along the tube bundle groove.

[0012] The position of the second distillate tube hole corresponds to the distillate collection port, and a distillate tube connector is provided in the second distillate tube hole. One end of the distillate tube connector is connected to the distillate tube, and the other end is fixed in the second distillate tube hole. When the distillate collection bottle is embedded in the distillate collection bottle placement groove, the outer edge of the distillate tube connector abuts against the retracting plate, exposing the distillate collection port until the distillate collection port is aligned with the distillate tube connector, forming a complete passage for collecting distillate.

[0013] Furthermore, a plurality of positioning pins are provided on the outer wall of the distillation vessel. These positioning pins are evenly distributed on the same horizontal plane around the outer wall of the distillation vessel, and a first groove is provided at the center of at least two opposite positioning pins. The inner wall of the first distillation vessel placement slot is provided with telescopic protrusions corresponding to the positioning pins, located above the heating sleeve. When the distillation vessel is placed in the first distillation vessel placement slot, the telescopic protrusions engage with the first grooves, thus fixing the distillation vessel in the first distillation vessel placement slot.

[0014] Preferably, the automatic distillation apparatus further includes an automatic liquid addition module, which is disposed on one side of the chassis and includes a distillation vessel placement rack and a triaxial liquid addition device installed on one side of the distillation vessel placement rack. The distillation vessel placement rack is provided with a second distillation vessel placement slot for placing the distillation vessel, and reagents are added through the triaxial liquid addition device. The triaxial liquid addition device is also equipped with a pH detection electrode to adjust the addition of reagents according to the pH value of the sample.

[0015] The second distillation vessel placement slot is provided with a limiting groove corresponding to the positioning pin. When the distillation vessel is placed in the second distillation vessel placement slot, the positioning pin is engaged in the limiting groove, thereby fixing the distillation vessel in the second distillation vessel placement slot.

[0016] Furthermore, the condenser clamping device is provided with a condenser clamp, one end of which is a hinged end and the other end is provided with a spring buckle. The condenser clamp is also provided with a condenser placement port. When the condenser is placed in the condenser placement port, it is fixed by the spring buckle.

[0017] Meanwhile, a protrusion is provided on each of the opposite sides of the outer wall of the condenser tube, and a second groove corresponding to the protrusion is provided on the inner wall of the condenser tube placement port. When the condenser tube is placed in the condenser tube placement port, the protrusion is engaged in the second groove, so that the condenser tube is fixed in the condenser tube placement port. An elastic buffer layer is also provided in the second groove.

[0018] Furthermore, the condenser clamping device also includes: a slider, a lead screw, a synchronous pulley, and a servo mechanism. One side of the opening and closing end of the condenser clamp is fixed on the slider, and the slider is mounted on the lead screw. The servo mechanism is connected to the lead screw through the synchronous pulley, and the condenser clamp moves up and down along the lead screw under the control of the servo mechanism.

[0019] Preferably, inside the chassis, a partition is provided between the first distillation vessel placement slot and the distillate collection bottle placement slot, and a cooling fan is installed on the left and / or right side of the chassis, the cooling fan being opposite to the distillation vessel placement slot to dissipate the heat generated by the heating jacket to the outside of the chassis. Furthermore, the chassis has corresponding cooling water pipe holes at each distillation workstation, and the condenser tubes at each distillation workstation are connected to the cooling water inlet and outlet ends via cooling water pipes to form a circulating cooling water system, wherein the cooling water pipes extend through the cooling water pipe holes.

[0020] Furthermore, the distillation vessel is provided with a first positioning protrusion at the mouth end, and the distillate collection bottle is provided with a second positioning protrusion at the mouth end. External threads are provided between the first positioning protrusion and the mouth of the distillation vessel, and between the second positioning protrusion and the mouth of the distillate collection bottle, so as to achieve sealing by covering the corresponding caps.

[0021] The steam inlet end of the condenser is fitted with an elastic clamp and a nested tube. When the steam inlet end of the condenser is connected to the mouth of the distillation vessel, the elastic clamp engages with the bottom of the first positioning protrusion. The mouth of the distillation vessel abuts against the top of the inner side of the nested tube, and the inner diameter of the nested tube is larger than the outer diameter of the mouth of the distillation vessel, so that the outer edge of the mouth of the distillation vessel does not contact the inner wall of the nested tube. Furthermore, the inner diameter of the mouth of the distillation vessel is larger than the outer diameter of the steam inlet end of the condenser, so that the outer edge of the steam inlet end of the condenser does not contact the inner wall of the mouth of the distillation vessel.

[0022] Preferably, the automatic distillation apparatus further includes a six-axis robotic arm, which is mounted on one side of the chassis, and an AGV (Automated Guided Vehicle) is installed at the bottom of the robotic arm to increase its range of motion. The six-axis robotic arm moves the distillation vessel by gripping the first positioning protrusion, and also moves the distillate collection bottle by gripping the second positioning protrusion.

[0023] After adopting the above technical solution, the present invention has the following effects: 1. This utility model can realize a truly fully automated distillation process, greatly reducing the intensity of manual operation and minimizing the interference of human factors on experimental results.

[0024] 2. This utility model improves the structure of the traditional distillate collection bottle and uses a liquid level sensor to monitor the liquid state inside the distillate bottle in real time. It can monitor the liquid level changes in real time, accurately control the distillation rate, stop heating in time, and automatically lift the distillate bottle away from the heating position, thus enhancing operational safety.

[0025] 3. This utility model improves the structure of the connection between the condenser and the distillation vessel, which can greatly enhance the accuracy of the automatic connection between the condenser and the distillation vessel, improve the sealing performance, and facilitate separation after distillation.

[0026] 4. This utility model has a compact layout, which reduces the space occupied and facilitates transportation and daily use. At the same time, the maintenance of the equipment is more convenient, and key components are easy to disassemble and replace, reducing maintenance costs.

[0027] 5. This utility model has high flexibility. It can realize the automated operation of the distillation process by a single unit. By connecting to an automatic liquid addition module and an AGV functional vehicle with a six-axis robotic arm, it can realize the fully automated operation of the distillation process and can be connected to a smart laboratory for unified management. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0029] Figure 2 This is a schematic diagram (cross-sectional view) showing how the distillation vessel and distillate collection bottle are placed in the chassis in this utility model.

[0030] Figure 3 This is a schematic diagram of how the distillation vessel is placed on the distillation vessel placement rack in this utility model (cross-sectional view, with a group having a cooling fan installed on the side as an example).

[0031] Figure 4 This is a three-dimensional structural diagram of the distillation vessel of this utility model.

[0032] Figure 5 This is a top view of the distillation vessel of this utility model.

[0033] Figure 6 for Figure 5 AA-direction cross-section.

[0034] Figure 7 This is a three-dimensional structural diagram of the distillate collection bottle of this utility model.

[0035] Figure 8 This is a top view of the distillate collection bottle of this utility model.

[0036] Figure 9 for Figure 8 BB-direction cross-section.

[0037] Figure 10 This is an exploded view (cross-sectional view) of the distillate collection bottle of this utility model.

[0038] Figure 11 This is a partially enlarged view of the internal structure of the distillate collection bottle placement tank of this utility model.

[0039] Figure 12 This is a three-dimensional structural diagram of the connection between the distillate pipe and the distillate pipe connector of this utility model.

[0040] Figure 13 This is a schematic diagram of the distillate pipe of this utility model (the thick solid line represents the distillate pipe outside the casing, and the dashed line represents the distillate pipe inside the casing).

[0041] Figure 14 This is a schematic diagram of the cooling water pipe of this utility model (the thick solid line represents the cooling water circulation pipe of the condenser pipe).

[0042] Figure 15 This is a top view of the connection between the condenser tube and the distillation vessel of this utility model.

[0043] Figure 16 for Figure 15 The CC-direction cross-sectional view (dashed arrows indicate the direction of steam flow in the condenser, solid arrows indicate the direction of steam discharge from the condenser after being converted into distillate).

[0044] Figure 17 for Figure 15 DD-direction cross-sectional view (solid arrows indicate the direction of cooling water flow, and dashed arrows indicate the direction of steam flow from the distillation vessel to the condenser).

[0045] Figure 18 This is a partial enlarged view (cross-sectional view) of the connection between the condenser tube and the distillation vessel of this utility model.

[0046] Figure 19 This is a three-dimensional structural diagram of the condenser tube clamping device of this utility model.

[0047] Figure 20 This is a three-dimensional structural diagram of the condenser tube clamp of this utility model.

[0048] Figure 21 This is a top view of the connection between the condenser clamp and the condenser tube of this utility model.

[0049] Figure 22 for Figure 21 EE-directed cross-sectional view.

[0050] Figure 23 This is a partial enlarged view (cross-sectional view) of the connection between the condenser clamp and the condenser tube of this utility model.

[0051] Main component symbols: 1: Chassis; 11: First distillation vessel placement slot; 111: Telescopic protrusion; 12: Distillate collection bottle placement slot; 121: Second distillate pipe hole; 122: Liquid level sensor; 123: Distillate pipe connector; 13: Heating jacket; 14: First distillate pipe hole; 15: Cooling water pipe hole; 16: Partition plate; 17: Cooling fan. 2: Distillation vessel; 21: Positioning pin; 211: First groove; 22: First positioning protrusion. 3: Distillate collection bottle; 31: Inner bottle body; 311: Distillate collection port; 312: Retracting plate; 313: Second positioning protrusion; 32: Outer bottle body; 321: Opening; 33: Glass plate. 4: Condenser tube clamping device; 41: Condenser tube clamp; 411: Spring clip; 412: Condenser tube placement port; 413: Second groove; 414: Elastic buffer layer; 42: Slider; 43: Lead screw; 44: Synchronous pulley; 45: Servo mechanism. 5: Condenser tube; 51: Steam inlet; 52: Anti-backflow port; 53: Distillate outlet; 54: Cooling water inlet; 55: Cooling water outlet; 56: Flexible claw clamp; 57: Nested tube; 58: Protrusion; 59: Distillate tube. 6: Distillation vessel placement rack; 61: Second distillation vessel placement slot; 611: Limiting support slot. 7: Three-axis liquid filling device; 8: Six-axis robotic arm; 9: AGV functional vehicle. Detailed Implementation

[0052] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0053] The condenser tube 5 used in this utility model is a spherical condenser tube or a serpentine condenser tube. In the following description of the specific embodiments of this utility model, a spherical condenser tube is used as an example.

[0054] like Figures 15 to 17 As shown, the condenser tube 5 is provided with a steam inlet end 51, an anti-backflow port 52, a distillate outlet end 53, a cooling water inlet end 54, and a cooling water outlet end 55. Cooling water is injected from the cooling water inlet end 54 and discharged from the cooling water outlet end 55. Steam enters the condenser tube 5 from the steam inlet end 51 and enters the spherical inner tube through the anti-backflow port 52 for condensation to form distillate, which is then discharged from the distillate outlet end 53.

[0055] like Figure 1 As shown, this utility model discloses an automatic distillation apparatus, including: a housing 1, a distillation module and a distillate collection module installed on the housing 1.

[0056] In this embodiment, the automated distillation apparatus further includes a six-axis robotic arm 8, which is mounted on one side of the chassis 1 and the automatic liquid addition module. An AGV (Automated Guided Vehicle) trolley 9 is installed at the bottom of the six-axis robotic arm 8 to increase its range of motion. Furthermore, by assembling the AGV trolley 9 and the six-axis robotic arm 8 for logistics integration, fully automated distillation can be truly integrated into a flexible production line in a smart laboratory.

[0057] The distillation module includes a heating jacket 13, a distillation vessel 2, and a condenser 5. The distillate collection module includes a distillate collection bottle 3.

[0058] Combination Figure 2 As shown, the chassis 1 is provided with several sets of distillation work positions. Each set of distillation work positions is provided with a first distillation kettle placement tank 11 and a distillate collection bottle placement tank 12 to place the distillation kettle 2 and the distillate collection bottle 3 respectively. Each set of distillation work positions is also equipped with a condenser clamping device 4 to install the condenser 5.

[0059] The heating jacket 13 is installed in the first distillation vessel placement tank 11. The distillate collection bottle placement tank 12 corresponds to the shape of the distillate collection bottle 3 and has a hollow side, so that the distillate collection bottle 3 is embedded into the tank horizontally and placed in close contact. A liquid level sensor 122 is installed at the bottom of the distillate collection bottle placement tank 12 to monitor the liquid level of the distillate.

[0060] like Figures 7 to 10 As shown, in this embodiment, the distillate collection bottle 3 is composed of an outer bottle body 32 and an inner bottle body 31 nested together. The bottom of the inner bottle body 31 is hollowed out, and the top of the outer bottle body 32 is hollowed out. The outer bottle body 32 fits over the inner bottle body 31, and an opening 321 is provided at the bottom of the outer bottle body 32. A glass plate 33 is provided on the opening 321, and the liquid level sensor 122 monitors the liquid level of the distillate through the opening 321. By monitoring the distillate in the distillate collection bottle 3 with the liquid level sensor 122, the accurate monitoring of the distillation rate during the distillation process can be improved.

[0061] Secondly, the bottom of the distillate collection bottle 3 is rectangular, and the connection between the bottle mouth and the bottle body is a slope that slopes to all four sides. One of the slopes is provided with a distillate collection port 311, and the distillate collection port 311 is provided with a corresponding retracting plate 312 to open or close the distillate collection port 311.

[0062] At the same time, combined Figures 11 to 13As shown, a distillate pipe 59 is installed on the condenser tube 5, and distillate is injected into the distillate collection bottle 3 through the distillate pipe 59. The chassis 1 is provided with a first distillate pipe hole 14 corresponding to each distillation working position, and a second distillate pipe hole 121 is provided on the inner wall of the distillate collection bottle placement tank 12. The chassis 1 is provided with a tube bundle groove (not shown in the figure) to organize and store the distillate pipe 59. The distillate pipe 59 extends into the interior of the chassis 1 from the first distillate pipe hole 14 and is arranged along the tube bundle groove.

[0063] The second distillate tube hole 121 is positioned corresponding to the distillate collection port 311, and a distillate tube connector 123 is provided in the second distillate tube hole 121. One end of the distillate tube connector 123 is connected to the distillate tube 59, and the other end is fixed in the second distillate tube hole 121. When the distillate collection bottle 3 is inserted into the distillate collection bottle placement tank 12, the outer edge of the distillate tube connector 123 abuts against the retracting plate 312, exposing the distillate collection port 311 until the distillate collection port 311 is aligned with the distillate tube connector 123, forming a complete passage for distillate collection. After the distillate is collected, the distillate collection bottle 3 is removed. During the process of removing the distillate collection bottle 3 from the distillate collection bottle placement tank 12, the outer edge of the distillate tube connector 123 no longer abuts against the retracting plate 312, and the retracting plate 312 gradually returns to its original position, closing the distillate collection port 311. In this embodiment, sealing rings are provided at the ends of the distillate collection port 311 and the distillate pipe connector 123 to prevent distillate leakage.

[0064] Meanwhile, in this embodiment, the first distillation vessel placement slot 11 and the distillate collection bottle placement slot 12 on the chassis 1 are typically designed with near-parallel heights. The height difference between them is to allow the distillate in the distillate pipe 59 to flow to the distillate collection bottle 3 under gravity. In some other embodiments, the first distillate pipe holes 14 and the second distillate pipe holes 121 in every two sets are symmetrically arranged to improve the visual appeal of the device. However, since the retracting plate 312 moves in a single direction, symmetrical distillate collection bottles 3 need to be manufactured, which increases production costs compared to mass production of distillate collection bottles 3.

[0065] Secondly, such as Figures 4 to 6 As shown, four positioning pins 21 are provided on the outer wall of the distillation vessel 2. The positioning pins 21 are evenly distributed on the same horizontal plane around the outer wall of the distillation vessel 2, and a first groove 211 is provided at the center of each positioning pin 21. In some other embodiments, the first groove 211 is provided only at the center of the positioning pins 21 on opposite sides, and in some embodiments, the number of positioning pins 21 may be set to only two or six.

[0066] Combination Figure 2As shown, the inner wall of the first distillation vessel placement groove 11 is provided with a telescopic protrusion 111 corresponding to the positioning pin 21, and is located above the heating sleeve 13. When the distillation vessel 2 is placed in the first distillation vessel placement groove 11, the telescopic protrusion 111 is engaged in the first groove 211, so that the distillation vessel 2 is fixed in the first distillation vessel placement groove 11.

[0067] In this embodiment, the telescopic protrusion 111 is electrically controlled. After distillation is completed, the central control system of this automatic distillation apparatus issues a command to reset the telescopic protrusion 111, disengaging it from the first groove 211, thus releasing the distillation vessel 2 from its fixed state and allowing it to leave the heating jacket 13. After the distillate is collected, the distillation vessel 2 is placed back into the first distillation vessel placement slot 11. At this time, the telescopic protrusion 111 extends and engages in the first groove 211, restoring the distillation vessel 2 to its fixed state.

[0068] Combination Figure 3 As shown, in this embodiment, the automatic distillation apparatus further includes an automatic liquid addition module installed on one side of the chassis 1 to complete sampling, addition of reaction reagents, and pH adjustment. The automatic liquid addition module includes a distillation vessel placement rack 6 and a triaxial liquid addition device 7 installed on one side of the distillation vessel placement rack 6. The distillation vessel placement rack 6 is provided with a second distillation vessel placement slot 61 for placing the distillation vessel 2, and reagents are added through the triaxial liquid addition device 7. A pH detection electrode can also be installed on the triaxial liquid addition device 7 according to the experimental requirements to adjust the addition of reagents according to the pH value of the sample.

[0069] The second distillation vessel placement slot 61 is provided with a limiting slot 611 corresponding to the positioning pin 21. When the distillation vessel 2 is placed in the second distillation vessel placement slot 61, the positioning pin 21 is locked on the limiting slot 611, so that the distillation vessel 2 is fixed in the second distillation vessel placement slot 61.

[0070] Meanwhile, inside the chassis 1, a partition 16 is provided between the first distillation vessel placement tank 11 and the distillate collection bottle placement tank 12. Cooling fans 17 are installed on the left and right sides of the chassis 1, facing the first distillation vessel placement tank 11, to dissipate the heat generated by the heating jacket 13 to the outside of the chassis 1. In this embodiment, the partition 16 between the first distillation vessel placement tank 11 and the distillate collection bottle placement tank 12 can significantly reduce the impact of the heat generated by the heating jacket 13 on the liquid level sensor 122 at the bottom of the distillate collection bottle placement tank 12. In other embodiments, since an automatic liquid addition module is provided on one side of the chassis 1, the chassis 1 only installs a cooling fan 17 on the opposite side to dissipate heat to the outside of the chassis 1 without affecting the automatic liquid addition module.

[0071] Furthermore, combined Figure 14As shown, the chassis 1 is provided with cooling water pipe holes 15 on each distillation work station. The condenser 5 on each distillation work station is connected to the cooling water inlet end 54 and the cooling water outlet end 55 through the cooling water pipe to form a circulating cooling water. The cooling water pipe passes through the cooling water pipe hole 15.

[0072] like Figure 20 As shown, the condenser clamping device 4 is provided with a condenser clamp 41. One end of the condenser clamp 41 is a hinged end, and the other end is provided with a spring buckle 411. The condenser clamp 41 is also provided with a condenser placement port 412. When the condenser 5 is placed in the condenser placement port 412, it is fixed by the spring buckle 411.

[0073] At the same time, combined Figures 21 to 23 As shown, a protrusion 58 is provided on each of the opposite sides of the outer wall of the condenser tube 5. The inner wall of the condenser tube placement port 412 is provided with a second groove 413 corresponding to the protrusion 58. When the condenser tube 6 is placed in the condenser tube placement port 412, the protrusion 58 is engaged in the second groove 413, so that the condenser tube 5 is fixed in the condenser tube placement port 412. Furthermore, an elastic buffer layer 414 is provided in the second groove 413.

[0074] Secondly, such as Figure 19 As shown, the condenser clamping device 4 also includes: a slider 42, a lead screw 43, a synchronous pulley 44, and a servo mechanism 45. One side of the opening and closing end of the condenser clamp 41 is fixed on the slider 42, and the slider 42 is mounted on the lead screw 43. The servo mechanism 45 is connected to the lead screw 43 through the synchronous pulley 44. The condenser clamp 41 moves up and down along the lead screw 43 under the control of the servo mechanism 45.

[0075] In addition, combined Figure 18 As shown, in this embodiment, the distillation vessel 2 is provided with a first positioning protrusion 22 at the mouth end, and the distillate collection bottle 3 is provided with a second positioning protrusion 313 at the bottle mouth end. In order to facilitate the temporary storage of liquid in the distillation vessel and the distillate collection bottle, external threads are provided between the first positioning protrusion 22 and the mouth of the distillation vessel 2 and between the second positioning protrusion 313 and the mouth of the distillate collection bottle 3, so as to seal by covering the corresponding caps.

[0076] The steam inlet end 51 of the condenser tube 5 is fitted with an elastic clamp 56 and a nested tube 57. When the steam inlet end 51 of the condenser tube 5 is connected to the mouth of the distillation vessel 2, the elastic clamp 56 is engaged with the bottom of the first positioning protrusion 22, the mouth of the distillation vessel 2 abuts against the top of the inner side of the nested tube 57, and the inner diameter of the nested tube 57 is larger than the outer diameter of the mouth of the distillation vessel 2, so that the outer edge of the mouth of the distillation vessel 2 does not contact the inner wall of the nested tube 57, and the inner diameter of the mouth of the distillation vessel 2 is larger than the outer diameter of the steam inlet end 51 of the condenser tube 5, so that the outer edge of the steam inlet end 51 of the condenser tube 5 does not contact the inner wall of the mouth of the distillation vessel 2.

[0077] The elastic gripper 56 and the nested tube 57 can improve the accuracy of the connection between the condenser tube 5 and the distillation vessel 2 during the process of controlling the lifting and lowering of the condenser tube 5 through the condenser tube clamping device 4. At the same time, after distillation, it is easy to remove the distillation vessel 2 and the condenser tube 5 together from the heat source without manual adjustment.

[0078] In this embodiment, the elastic gripper 38 is provided with serrated horizontal lines to enhance the friction between the elastic gripper 38 and the first positioning protrusion 22. The elastic gripper 38 is also provided with a horizontal groove. When the elastic gripper 38 is engaged with the bottom of the first positioning protrusion 22, the outer edge of the bottom of the first positioning protrusion 22 is engaged in the horizontal groove. Simultaneously, a silicone buffer layer is provided at the top of the inner side of the nested tube 57. This enhances the sealing during distillation and reduces damage to the vessel mouth.

[0079] Upon completion of distillation, the central control system of this automatic distillation apparatus issues a command to stop heating and disengage the distillation vessel 2 from its fixed position. Simultaneously, the condenser clamping device 4 is raised, causing the distillation vessel 2 to move away from the heating jacket 13. After the distillate has been collected, the central control system of this automatic distillation apparatus issues another command to lower the condenser clamping device 4, causing the distillation vessel 2 to be placed in the first distillation vessel placement slot 11, restoring the distillation vessel 2 to its fixed position. Then, the condenser clamping device 4 is raised again, completing the separation of the condenser 5 from the distillation vessel 2.

[0080] At this time, the six-axis robotic arm 8 transfers the distillation vessel 2 by gripping the first positioning protrusion 22, and also transfers the distillate collection bottle 3 by gripping the second positioning protrusion 313. In this embodiment, to facilitate the gripping of the first positioning protrusion 22 and the second positioning protrusion 313 by the six-axis robotic arm 8, the first positioning protrusion 22 and the second positioning protrusion 313 are cubic blocks.

[0081] The above description is only a preferred embodiment of the present utility model. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic distillation apparatus, characterized in that, include: The chassis, the distillation module mounted on the chassis, and the distillate collection module; The distillation module includes: a heating jacket, a distillation vessel, and a condenser; the distillate collection module includes: a distillate collection bottle; The chassis is provided with several sets of distillation work positions. Each set of distillation work positions is provided with a first distillation kettle placement slot and a distillate collection bottle placement slot to place the distillation kettle and the distillate collection bottle respectively. Each set of distillation work positions is also equipped with a condenser clamping device to install the condenser. The distillation vessel has a first positioning protrusion at its mouth. The steam inlet end of the condenser is fitted with an elastic clamp and a nested tube. When the steam inlet end of the condenser is connected to the mouth of the distillation vessel, the elastic clamp engages with the bottom of the first positioning protrusion. The mouth of the distillation vessel abuts against the top of the inner side of the nested tube, and the inner diameter of the nested tube is larger than the outer diameter of the mouth of the distillation vessel, so that the outer edge of the mouth of the distillation vessel does not contact the inner wall of the nested tube. Furthermore, the inner diameter of the mouth of the distillation vessel is larger than the outer diameter of the steam inlet end of the condenser, so that the outer edge of the steam inlet end of the condenser does not contact the inner wall of the mouth of the distillation vessel. The heating jacket is installed in the first distillation vessel placement slot. The shape of the distillate collection bottle placement slot corresponds to the shape of the distillate collection bottle and one side is hollowed out, so that the distillate collection bottle is embedded into the slot horizontally and placed in close contact. A liquid level sensor is installed at the bottom of the distillate collection bottle placement slot to monitor the liquid level of the distillate.

2. The automatic distillation apparatus as described in claim 1, characterized in that: The distillate collection bottle is composed of an inner bottle and an outer bottle. The bottom of the inner bottle is hollowed out, the top of the outer bottle is hollowed out, and the outer bottle is fitted over the inner bottle. The bottom of the outer bottle has an opening with a glass plate on it. The liquid level sensor monitors the liquid level of the distillate through the opening.

3. An automatic distillation apparatus as described in claim 1, characterized in that: The bottom of the distillate collection bottle is rectangular, and the connection between the bottle mouth and the bottle body is a sloping surface that slopes to all four sides. One of the sloping surfaces is provided with a distillate collection port, and the distillate collection port is provided with a corresponding retractable plate to open or close the distillate collection port. A distillate tube is installed on the condenser tube, and distillate is injected into the distillate collection bottle through the distillate tube; the chassis is provided with a first distillate tube hole corresponding to each distillation working position, and a second distillate tube hole is provided on the inner wall of the distillate collection bottle placement slot, and a tube bundle groove is provided inside the chassis, and the distillate tube extends into the interior of the chassis from the first distillate tube hole and is arranged along the tube bundle groove; The position of the second distillate tube hole corresponds to the distillate collection port, and a distillate tube connector is provided in the second distillate tube hole. One end of the distillate tube connector is connected to the distillate tube, and the other end is fixed in the second distillate tube hole. When the distillate collection bottle is embedded in the distillate collection bottle placement groove, the outer edge of the distillate tube connector abuts against the retracting plate, exposing the distillate collection port until the distillate collection port is aligned with the distillate tube connector, forming a complete passage for collecting distillate.

4. An automatic distillation apparatus as described in claim 1, characterized in that: The outer wall of the distillation vessel is provided with a plurality of positioning pins, which are evenly distributed on the same horizontal plane around the outer wall of the distillation vessel, and a first groove is provided at least at the center of the positioning pins on both sides. The inner wall of the first distillation vessel placement slot is provided with a telescopic protrusion corresponding to the positioning pin and located above the heating sleeve. When the distillation vessel is placed in the first distillation vessel placement slot, the telescopic protrusion is engaged in the first groove, so that the distillation vessel is fixed in the first distillation vessel placement slot.

5. An automatic distillation apparatus as described in claim 4, characterized in that: Also includes: An automatic liquid addition module is provided, which is located on one side of the chassis and includes: a distillation vessel placement rack and a triaxial liquid addition device installed on one side of the distillation vessel placement rack. The distillation vessel placement rack is provided with a second distillation vessel placement slot for placing the distillation vessel, and reagents are added through the triaxial liquid addition device. The triaxial liquid addition device is also equipped with a pH detection electrode to adjust the addition of reagents according to the pH value of the sample. The second distillation vessel placement slot is provided with a limiting groove corresponding to the positioning pin. When the distillation vessel is placed in the second distillation vessel placement slot, the positioning pin is engaged in the limiting groove, thereby fixing the distillation vessel in the second distillation vessel placement slot.

6. An automatic distillation apparatus as described in claim 1, characterized in that: The condenser clamping device is equipped with a condenser clamp, one end of which is a hinged end and the other end is equipped with a spring buckle. The condenser clamp is also equipped with a condenser placement port. When the condenser is placed in the condenser placement port, it is fixed by the spring buckle. Meanwhile, a protrusion is provided on each of the opposite sides of the outer wall of the condenser tube, and a second groove corresponding to the protrusion is provided on the inner wall of the condenser tube placement port. When the condenser tube is placed in the condenser tube placement port, the protrusion is engaged in the second groove, so that the condenser tube is fixed in the condenser tube placement port. An elastic buffer layer is also provided in the second groove.

7. An automatic distillation apparatus as described in claim 6, characterized in that: The condenser tube clamping device further includes: a slider, a lead screw, a synchronous pulley, and a servo mechanism. One side of the opening and closing end of the condenser tube clamp is fixed on the slider, and the slider is mounted on the lead screw. The servo mechanism is connected to the lead screw through the synchronous pulley, and the condenser tube clamp moves up and down along the lead screw under the control of the servo mechanism.

8. An automatic distillation apparatus as described in claim 1, characterized in that: Inside the chassis, a partition is provided between the first distillation vessel placement slot and the distillate collection bottle placement slot, and a cooling fan is installed on the left and / or right side of the chassis. The cooling fan is opposite to the distillation vessel placement slot to dissipate the heat generated by the heating jacket to the outside of the chassis. Furthermore, the chassis is provided with cooling water pipe holes for each distillation work station. The condenser tubes on each distillation work station are connected to the cooling water inlet and outlet through cooling water pipes to form a circulating cooling water system. The cooling water pipes extend out from the cooling water pipe holes.

9. An automatic distillation apparatus as described in any one of claims 1-8, characterized in that: The distillate collection bottle has a second positioning protrusion at the bottle mouth, and external threads are provided between the first positioning protrusion and the mouth of the distillation vessel, and between the second positioning protrusion and the bottle mouth of the distillate collection bottle, so as to seal by covering the corresponding cap.

10. An automatic distillation apparatus as described in claim 9, characterized in that: Also includes: A six-axis robotic arm is mounted on one side of the chassis, and an AGV (Automated Guided Vehicle) is mounted on the bottom of the six-axis robotic arm to increase its range of motion. The six-axis robotic arm moves the distillation vessel by gripping the first positioning protrusion, and also moves the distillate collection bottle by gripping the second positioning protrusion.

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