Heavy metal automatic detection device with isolating and sampling functions

Abstract

The invention discloses an automatic heavy metal detection device with isolation and sampling functions, the detection device comprises a bottom table, a box cover, a control panel, a liquid mixing mechanism, a feeding mechanism, a pipetting mechanism and a reagent table, the liquid mixing mechanism comprises a two-axis displacement module and a sampling mechanism; the bottom table is fixedly connected with the box cover, the two-axis displacement module, the feeding mechanism, the pipetting mechanism and the reagent table, the control panel is connected with the two-axis displacement module and the sampling mechanism through electric signals, a side slide way is arranged on the box cover, the feeding mechanism is arranged on the side, close to the side slide way, of the bottom table, and the pipetting mechanism is arranged on the side, away from the side slide way, of the bottom table; the invention relates to the technical field of automatic detection equipment, can automatically detect heavy metal components in a sample solvent, isolate harmful treatment reagents, avoid dangers to experimenters, and can perform layered directional accurate extraction detection on a sample solution of a formulated liquid layer, so that the detection efficiency is improved. The safety and the accuracy of the reagent for detecting the heavy metal sample are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automated detection equipment, in particular to an automated heavy metal detection device with an isolation sampling function. Background Art

[0002] In a laboratory setting, heavy metal detection relies on a colorimetric reaction to determine heavy metal concentrations. The underlying technology for automated heavy metal detection is the result of a multidisciplinary convergence. Its development stems from the urgent need for rapid, accurate, and real-time monitoring, with the core goal of breaking through the constraints of traditional detection methods. These methods have numerous limitations, such as time-consuming testing processes and a heavy reliance on specialized laboratory equipment and technicians, making them difficult to meet the demands of rapid response and on-site testing.

[0003] In the current automated heavy metal testing process, reagents must be added to the heavy metal sample to pre-treat the sample solution and encourage a more complete reaction. However, some existing reagents are harmful to the human body and must be strictly sealed and isolated during the testing process. Furthermore, the reagent addition process in existing automated testing equipment still requires manual laboratories, which undoubtedly poses a significant safety risk and may expose laboratories to harmful reagents, posing health risks. Summary of the Invention

[0004] The object of the present invention is to provide an automatic heavy metal detection device with an isolation sampling function to solve the problems in the prior art.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an automatic heavy metal detection device with an isolation sampling function includes a base, a box cover, a control panel, a liquid mixing mechanism, a loading mechanism, a pipetting mechanism and a reagent table. The liquid mixing mechanism includes a two-axis displacement module and a sampling mechanism. The base is fixedly connected to the box cover, the two-axis displacement module, the loading mechanism, the pipetting mechanism and the reagent table. The control panel is connected to the two-axis displacement module and the sampling mechanism through electrical signals. A side slide is provided on the box cover. The loading mechanism is arranged on the side of the base close to the side slide, and the pipetting mechanism is arranged on the side of the base away from the side slide.

[0006] The present invention provides a detection device for automatically detecting the components of heavy metal samples. A solution tank containing the heavy metal sample is placed on a loading mechanism. The loading mechanism performs preliminary stirring on the sample during transportation of the sample tank to make the components in the sample uniform and prevent precipitation of substances in the sample. The loading mechanism transports the sample tank to a liquid mixing station. A two-axis displacement module transfers a prefabricated harmful reagent tank in a reagent table. The liquid mixing mechanism seals and transfers the harmful reagent to the liquid mixing station. A sample solvent of a specified liquid layer in the sample tank is injected into the reagent tank. After the heavy metals in the sample are extracted through reaction between the reagent and the sample, the liquid mixing mechanism transports the reagent tank to the reagent table. The pipetting mechanism extracts the sample solution and drips it onto a reagent card on the reagent table for detection.

[0007] Furthermore, the liquid mixing mechanism also includes an adsorption mechanism, a sealing cup and a sampling mechanism. The adsorption mechanism includes a semi-column and an annular shell. The sampling mechanism includes a one-way valve plate. The semi-column is fixedly connected to the two-axis displacement module and the annular shell. The sealing cup is in contact with the annular shell. The sealing cup is fixedly connected to the one-way valve plate. The loading mechanism includes a first transverse movement module. The first transverse movement module, the two-axis displacement module and the first transverse movement module are arranged on the same side of the reagent table.

[0008] The two-axis displacement module transports the adsorption mechanism to the top of the reagent table, and then lowers the adsorption mechanism to the top of the reagent tank. The sealed cup containing the harmful reagent is adsorbed in the ring shell by the adsorption mechanism, and then the adsorption mechanism is transferred as a whole by the two-axis displacement module to the liquid mixing station of the loading mechanism on the same side of the reagent table to complete the mixing of the reagent and the sample.

[0009] Furthermore, the adsorption mechanism also includes an air pump, an air suction channel and a slide are provided on the semi-column, an air suction hole is provided on the ring shell, the air suction channel is connected to the air suction pump and the air suction hole, the air suction hole is in contact with the sealing cup, and the sampling mechanism also includes a servo motor, a worm and a slide, the servo motor is fixedly connected to the slide, the output end of the servo motor is fixedly connected to the worm, the worm is rotatably connected to the slide, a threaded hole is provided on the slide, the worm is connected to the threaded hole through a thread, and the slide is slidably connected to the slide.

[0010] The two-axis displacement module transports the adsorption mechanism to the top of the reagent table, and the vacuum pump adsorbs the sealing cup through the vacuum channel and the vacuum hole. The two-axis displacement module transfers the half column as a whole to the liquid mixing station and then descends, placing the half column in the sample solution. According to the electrical signal of the control panel, the servo motor outputs a fixed-axis torque to the worm. Through the threaded connection between the worm and the threaded hole on the slide, the slide slides along the slide groove to the specified liquid layer. After the slide extracts the solution of the specified liquid layer, it continues to slide down, and the slide injects the sample solution into the sealing cup.

[0011] Furthermore, the sealing cup is provided with an inclined air channel and a sealing channel. The inclined air channel is provided in several groups. The sealing channel, the exhaust hole and the exhaust channel are each provided in three groups. Several groups of inclined air channels are arranged along the circumference of the ring shell. The three groups of sealing channels are provided between two adjacent groups of inclined air channels. The distance between adjacent sealing channels and adjacent inclined air channels is the same.

[0012] When the air pump absorbs the sealing cup through the air suction channel and the air suction hole, the three groups of air suction channels draw a vacuum under the action of the air pump. When the oblique air channel is aligned with the air suction hole, the oblique air channel connects the outside world and the air suction channel, the air pump continues to pump air, and the air in the oblique air channel is inclined upward from the bottom, and the horizontal component force drives the sealing cup as a whole to rotate in the annular shell. Since several groups of oblique air channels are arranged along the circumference of the annular shell, the three groups of sealing channels are arranged between two adjacent groups of oblique air channels, and the distance between adjacent sealing channels and adjacent oblique air channels is the same. Only when the three groups of sealing channels correspond to the three groups of air suction holes and the air suction channel one by one, the sealing channel is not connected to the outside world, and the air pump absorbs the sealing cup through the air suction channel, the air suction hole and the sealing channel, and can perform self-positioning adsorption on the sealing cup to ensure that the striker is aligned above the one-way valve plate. At the same time, the rotation of the sealing cup as a whole in the annular shell can make the reagent in the sealing cup shake, so as to avoid affecting the mixing effect due to long-term static sedimentation.

[0013] Furthermore, the sampling mechanism also includes an embedded table and a servo cylinder. The servo motor and the servo cylinder are connected to the control panel through electrical signals. The output end of the servo cylinder is fixedly connected to the embedded table, and the embedded table is slidably connected to the slide. The slide is also provided with a striker and a two-way valve hole. The striker and the two-way valve hole are both located at the bottom of the slide.

[0014] According to the electrical signal of the control panel, the servo motor outputs fixed-axis torque to the worm. Through the threaded connection between the worm and the threaded hole on the slide, the slide slides along the slide groove to the specified liquid layer. The servo cylinder output pushes the embedded table to slide upward in the slide. Negative pressure is generated between the bottom of the embedded table and the bottom of the slide. The solution reagent of the specified liquid layer enters between the embedded table and the slide from the two-way valve hole. The servo motor continuously outputs torque to make the bottom of the slide contact the one-way valve plate. The striker pushes open the one-way valve plate. The embedded table slides downward to inject the sample solution of the specified liquid layer into the sealing cup through the two-way valve hole and the one-way valve plate.

[0015] Furthermore, the loading mechanism also includes a loading rack, a conveyor belt, a second transverse movement module, a unloading rack and a stirring mechanism. The stirring mechanism includes a horizontal displacement module and a cleaning tank. The first transverse movement module, the conveyor belt, the second transverse movement module, the horizontal displacement module and the cleaning tank are all fixedly connected to the base. The first transverse movement module is arranged on the side of the base away from the two-axis displacement module. The loading rack is slidably connected to the first transverse movement module, the unloading rack is slidably connected to the second transverse movement module, and the second transverse movement module is arranged on the side of the base close to the two-axis displacement module.

[0016] When the sample solvent tank is loaded, the first transverse moving module drives the loading rack to move transversely along the vertical conveyor belt direction, and transfers the sample solvent tank to the conveyor belt. The conveyor belt transfers the sample solvent tank to the stirring station. The stirring mechanism stirs the solvent in the sample solvent tank to make the components in the sample uniform and avoid precipitation of substances in the sample. The conveyor belt continues to transfer the sample solvent tank to the second transverse moving module away from the first transverse moving module. The second transverse moving module drives the unloading rack to move the sample solvent tank transversely along the vertical conveyor belt direction to the liquid mixing station. After the mixed liquid is detected, the unloading rack moves transversely along the vertical conveyor belt direction to transfer the solvent tank to the side slide for transportation.

[0017] Furthermore, the stirring mechanism also includes a vertical displacement module, a stirring motor and a stirring paddle. The vertical displacement module is slidingly connected to the horizontal displacement module, the stirring motor is slidingly connected to the vertical displacement module, and the output end of the stirring motor is fixedly connected to the stirring paddle.

[0018] The stirring motor outputs torque to the stirring paddle. After the stirring paddle is cleaned in the cleaning tank, the conveyor belt transfers the sample solvent tank to the stirring station. The vertical displacement module drives the stirring motor to move upward. After the horizontal displacement module drives the vertical displacement module to move horizontally, the stirring motor resets and descends. The stirring motor outputs torque to the stirring paddle to stir the solvent in the sample solvent tank to make the components in the sample uniform and avoid precipitation of substances in the sample.

[0019] Furthermore, the pipetting mechanism includes a three-axis displacement module and a pipetting gun, and the three-axis displacement module is fixedly connected to the base and the pipetting gun.

[0020] The two-axis displacement module transports the sealed cup to the reagent table, and the three-axis displacement module drives the pipette gun, adjusts its orientation within the three-axis coordinate system, and drops the solution sample that has reacted with the reagent in the sealed cup onto the reagent card on the reagent table for detection.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention designs a liquid mixing mechanism, which transports the adsorption mechanism to the top of the reagent table through a two-axis displacement module, and the vacuum pump adsorbs the sealing cup through the vacuum channel and the vacuum hole, so that harmful reagents can be automatically sealed and contactlessly transported; the present invention designs an adsorption mechanism, which draws a vacuum through the three groups of vacuum channels under the action of the vacuum pump. When the oblique air channel is aligned with the vacuum hole, the oblique air channel connects the outside world and the vacuum channel, and the vacuum pump continuously pumps air. The air in the oblique air channel that flows obliquely upward from the bottom drives the sealing cup to rotate as a whole in the annular shell in the horizontal direction. When the three groups of sealing channels correspond one to one with the three groups of vacuum holes and the vacuum channels, the sealing channel is not connected to the outside world. The vacuum pump sealing channel adsorbs the sealing cup, and can perform self-positioning adsorption on the sealing cup to ensure that the striker is aligned above the one-way valve plate, and at the same time The reagents are shaken to avoid affecting the mixing effect due to long-term static sedimentation; the present invention designs a sampling mechanism, which outputs a fixed-axis torque to the worm through the servo motor, and the slide slides along the slide groove to the specified liquid layer. The servo cylinder output pushes the embedded table to slide upward in the slide, and a negative pressure is generated between the bottom of the embedded table and the slide. The solution reagent of the specified liquid layer enters between the embedded table and the slide from the two-way valve hole, and the servo motor continuously outputs torque to make the bottom of the slide contact the one-way valve plate, and the striker pushes open the one-way valve plate to inject the sample solution of the specified liquid layer into the sealing cup; the present invention can automatically detect the heavy metal components in the sample solvent, isolate harmful processing reagents, avoid danger to experimental personnel, and at the same time, can perform layered, directional and precise extraction and detection of the sample solution of the specified liquid layer, which greatly improves the safety and accuracy of detecting heavy metal sample reagents. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a partial cross-sectional view of the overall structure of the present invention;

[0024] Figure 3 Schematic diagram of the liquid mixing mechanism structure of the present invention;

[0025] Figure 4 It is a partial cross-sectional view of the adsorption mechanism of the present invention;

[0026] Figure 5 It is a partial cross-sectional view of the liquid mixing mechanism of the present invention;

[0027] Figure 6 It is a partial cross-sectional view of the feeding mechanism of the present invention;

[0028] Figure 7 This is a schematic structural diagram of the second transverse module of the present invention;

[0029] Figure 8 Schematic diagram of the stirring mechanism structure of the present invention;

[0030] Figure 9 It is a schematic structural diagram of the liquid transfer mechanism of the present invention.

[0031] In the figure: 1. Base; 2. Box cover; 21. Side slide; 3. Control panel; 4. Liquid mixing mechanism; 41. Two-axis displacement module; 42. Adsorption mechanism; 421. Half column; 4211. Air extraction channel; 4212. Slide; 422. Air extraction pump; 423. Ring shell; 4231. Air extraction hole; 43. Sealing cup; 431. Oblique air channel; 432. Sealing channel; 44. Sampling mechanism; 441. Servo motor; 442. Worm; 443. Slide; 4431. Threaded hole; 4432. Strike pin ; 4433, two-way valve hole; 444, embedded table; 445, servo cylinder; 446, one-way valve plate; 5, loading mechanism; 51, first transverse movement module; 52, loading rack; 53, conveyor belt; 54, second transverse movement module; 55, unloading rack; 56, stirring mechanism; 561, horizontal displacement module; 562, vertical displacement module; 563, stirring motor; 564, stirring paddle; 565, cleaning tank; 6, pipetting mechanism; 61, three-axis displacement module; 62, pipette gun; 7, reagent table. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] like Figure 1 、 Figure 2 As shown, the present invention provides a technical solution of an automatic heavy metal detection device with an isolation sampling function, including a base 1, a box cover 2, a control panel 3, a liquid mixing mechanism 4, a loading mechanism 5, a pipetting mechanism 6 and a reagent table 7. The liquid mixing mechanism 4 includes a two-axis displacement module 41 and a sampling mechanism 44. The base 1 is fixedly connected to the box cover 2, the two-axis displacement module 41, the loading mechanism 5, the pipetting mechanism 6 and the reagent table 7. The control panel 3 is connected to the two-axis displacement module 41 and the sampling mechanism 44 through electrical signals. A side slide 21 is provided on the box cover 2, the loading mechanism 5 is provided on the base 1 close to the side slide 21, and the pipetting mechanism 6 is provided on the base 1 away from the side slide 21.

[0034] The present invention is a detection device for automatically detecting the components of heavy metal samples. A tank containing a heavy metal sample solution is placed on a loading mechanism 5. The loading mechanism 5 performs preliminary stirring on the sample during the transportation of the sample tank to make the components in the sample uniform and avoid precipitation of substances in the sample. The loading mechanism 5 transports the sample tank to a liquid mixing station. The two-axis displacement module 41 transfers the prefabricated harmful reagent tank in the reagent table 7. The liquid mixing mechanism 4 seals and transfers the harmful reagent to the liquid mixing station. The sample solvent of a specified liquid layer in the sample tank is injected into the reagent tank. After the heavy metals in the sample are extracted through the reaction between the reagent and the sample, the liquid mixing mechanism 4 transports the reagent tank to the reagent table 7. The pipetting mechanism 6 extracts the sample solution and drips it onto the reagent card on the reagent table 7 for detection.

[0035] like Figure 2 、 Figure 3 As shown, the liquid mixing mechanism 4 also includes an adsorption mechanism 42, a sealing cup 43 and a sampling mechanism 44. The adsorption mechanism 42 includes a semi-column 421 and an annular shell 423. The sampling mechanism 44 includes a one-way valve plate 446. The semi-column 421 is fixedly connected to the two-axis displacement module 41 and the annular shell 423. The sealing cup 43 is in contact with the annular shell 423. The sealing cup 43 is fixedly connected to the one-way valve plate 446. The loading mechanism 5 includes a first transverse movement module 51. The first transverse movement module 51, the two-axis displacement module 41 and the first transverse movement module 51 are arranged on the same side of the reagent table 7.

[0036] The two-axis displacement module 41 transports the adsorption mechanism 42 to the top of the reagent table 7, and the two-axis displacement module 41 lowers the adsorption mechanism 42 to the top of the reagent tank. The sealing cup 43 containing the harmful reagent is adsorbed in the annular shell 423 by the adsorption mechanism 42, and then the adsorption mechanism 42 is transferred as a whole by the two-axis displacement module 41 to the liquid mixing station of the loading mechanism 5 on the same side of the reagent table 7 to complete the mixing of the reagent and the sample.

[0037] like Figure 3 、 Figure 4 、 Figure 5 As shown, the adsorption mechanism 42 also includes an air pump 422, an air suction channel 4211 and a slide 4212 are provided on the semi-column 421, and an air suction hole 4231 is provided on the annular shell 423. The air suction channel 4211 is connected with the air pump 422 and the air suction hole 4231. The air suction hole 4231 is in contact with the sealing cup 43. The sampling mechanism 44 also includes a servo motor 441, a worm 442 and a slide 443. The servo motor 441 is fixedly connected to the slide 4212, and the output end of the servo motor 441 is fixedly connected to the worm 442. The worm 442 is rotatably connected to the slide 4212. A threaded hole 4431 is provided on the slide 443. The worm 442 is threadedly connected to the threaded hole 4431, and the slide 443 is slidably connected to the slide 4212.

[0038] The two-axis displacement module 41 transports the adsorption mechanism 42 to the top of the reagent table 7, and the vacuum pump 422 adsorbs the sealing cup 43 through the vacuum channel 4211 and the vacuum hole 4231. The two-axis displacement module 41 transfers the half column 421 as a whole to the mixing station and then descends, placing the half column 421 in the sample solution. According to the electrical signal of the control panel 3, the servo motor 441 outputs a fixed-axis torque to the worm 442. Through the threaded connection between the worm 442 and the threaded hole 4431 on the slide 443, the slide 443 slides along the slide groove 4212 to the specified liquid layer. After the slide 443 extracts the solution of the specified liquid layer, it continues to slide down, and the slide 443 injects the sample solution into the sealing cup 43.

[0039] like Figure 3 、 Figure 4 、 Figure 5 As shown, the sealing cup 43 is provided with an oblique air channel 431 and a sealing channel 432. The oblique air channel 431 is provided in several groups, and the sealing channel 432, the exhaust hole 4231, and the exhaust channel 4211 are each provided with three groups. The several groups of oblique air channels 431 are arranged along the circumference of the annular shell 423, and the three groups of sealing channels 432 are provided between two adjacent groups of oblique air channels 431. The distance between adjacent sealing channels 432 and adjacent oblique air channels 431 is the same.

[0040] When the air pump 422 absorbs the sealing cup 43 through the air suction channel 4211 and the air suction hole 4231, the three groups of air suction channels 4211 are vacuumed under the action of the air pump 422. When the oblique air channel 431 is aligned with the air suction hole 4231, since the oblique air channel 431 connects the outside and the air suction channel 4211, the air pump 422 continues to pump air. The air in the oblique air channel 431 flows upward from the bottom, and the horizontal component force drives the sealing cup 43 as a whole to rotate in the annular shell 423. Since the plurality of groups of oblique air channels 431 are arranged along the circumference of the annular shell 423, the three groups of sealing channels 432 are arranged between two adjacent groups of oblique air channels 431. The sealing channel 432 has the same spacing as the adjacent oblique air channel 431. Only when the three groups of sealing channels 432 correspond one-to-one with the three groups of exhaust holes 4231 and the exhaust channel 4211, the sealing channel 432 is not connected to the outside world. The exhaust pump 422 adsorbs the sealing cup 43 through the exhaust channel 4211, the exhaust holes 4231, and the sealing channel 432, and can self-position and adsorb the sealing cup 43 to ensure that the striker 4432 is aligned above the one-way valve plate 446. At the same time, the sealing cup 43 rotates as a whole in the annular shell 423 to shake the reagent in the sealing cup 43 to prevent it from affecting the mixing effect due to long-term static sedimentation.

[0041] like Figure 3 、 Figure 4 、 Figure 5As shown, the sampling mechanism 44 also includes an embedded table 444 and a servo cylinder 445. The servo motor 441 and the servo cylinder 445 are connected to the control panel 3 through electrical signals. The output end of the servo cylinder 445 is fixedly connected to the embedded table 444. The embedded table 444 is slidably connected to the slide 443. The slide 443 is also provided with a striker 4432 and a two-way valve hole 4433. The striker 4432 and the two-way valve hole 4433 are both provided at the bottom of the slide 443.

[0042] According to the electrical signal of the control panel 3, the servo motor 441 outputs a fixed-axis torque to the worm 442. Through the threaded connection between the worm 442 and the threaded hole 4431 on the slide 443, the slide 443 slides along the slide groove 4212 to the specified liquid layer. The servo cylinder 445 outputs to push the embedded table 444 to slide upward in the slide 443. A negative pressure is generated between the bottom of the embedded table 444 and the bottom of the slide 443. The solution reagent of the specified liquid layer enters between the embedded table 444 and the slide 443 from the two-way valve hole 4433. The servo motor 441 continuously outputs torque to make the bottom of the slide 443 contact the one-way valve plate 446. The striker 4432 pushes open the one-way valve plate 446. The embedded table 444 slides downward to inject the sample solution of the specified liquid layer into the sealing cup 43 through the two-way valve hole 4433 and the one-way valve plate 446.

[0043] like Figure 6 、 Figure 7 、 Figure 8 As shown, the loading mechanism 5 also includes a loading rack 52, a conveyor belt 53, a second transverse module 54, a loading rack 55 and a stirring mechanism 56. The stirring mechanism 56 includes a horizontal displacement module 561 and a cleaning tank 565. The first transverse module 51, the conveyor belt 53, the second transverse module 54, the horizontal displacement module 561 and the cleaning tank 565 are all fixedly connected to the base 1. The first transverse module 51 is arranged on the side of the base 1 away from the two-axis displacement module 41. The loading rack 52 is slidably connected to the first transverse module 51. The loading rack 55 is slidably connected to the second transverse module 54. The second transverse module 54 is arranged on the side of the base 1 close to the two-axis displacement module 41.

[0044] When the sample solvent tank is loaded, the first transverse movement module 51 drives the loading rack 52 to move transversely along the vertical conveyor belt 53 to transfer the sample solvent tank to the conveyor belt 53. The conveyor belt 53 transfers the sample solvent tank to the stirring station. The stirring mechanism 56 stirs the solvent in the sample solvent tank to make the components in the sample uniform and avoid precipitation of substances in the sample. The conveyor belt 53 continues to transfer the sample solvent tank to the second transverse movement module 54 away from the first transverse movement module 51. The second transverse movement module 54 drives the unloading rack 55 to move the sample solvent tank transversely along the vertical conveyor belt 53 to the liquid mixing station. After the mixed liquid is detected, the unloading rack 55 moves transversely along the vertical conveyor belt 53 to transfer the solvent tank to the side slide 21 for transportation.

[0045] like Figure 7 、 Figure 8 As shown, the stirring mechanism 56 also includes a vertical displacement module 562, a stirring motor 563 and a stirring paddle 564. The vertical displacement module 562 is slidingly connected to the horizontal displacement module 561, the stirring motor 563 is slidingly connected to the vertical displacement module 562, and the output end of the stirring motor 563 is fixedly connected to the stirring paddle 564.

[0046] The stirring motor 563 outputs torque to the stirring paddle 564. The stirring paddle 564 is cleaned in the cleaning tank 565. The conveyor belt 53 transfers the sample solvent tank to the stirring station. The vertical displacement module 562 drives the stirring motor 563 to move upward. After the horizontal displacement module 561 drives the vertical displacement module 562 to move horizontally, the stirring motor 563 resets and descends. The stirring motor 563 outputs torque to the stirring paddle 564 to stir the solvent in the sample solvent tank to make the components in the sample uniform and avoid precipitation of substances in the sample.

[0047] like Figure 9 As shown, the pipetting mechanism 6 includes a three-axis displacement module 61 and a pipetting gun 62 . The three-axis displacement module 61 is fixedly connected to the base 1 and the pipetting gun 62 .

[0048] The two-axis displacement module 41 transports the sealing cup 43 to the reagent table 7, and the three-axis displacement module 61 drives the pipette gun 62 to adjust its orientation within the three-axis coordinate system, and drops the solution sample in the sealing cup 43 that has reacted with the reagent onto the reagent card on the reagent table 7 for detection.

[0049] The working principle of the present invention is as follows: the feeding mechanism 5 performs preliminary stirring of the sample during the transportation of the sample tank to make the components in the sample uniform and avoid the precipitation of substances in the sample. The feeding mechanism 5 transports the sample tank to the liquid mixing station. The two-axis displacement module 41 lowers the adsorption mechanism 42 to the top of the reagent tank. The air pump 422 adsorbs the sealing cup 43 through the air suction channel 4211 and the air suction hole 4231. The three sets of air suction channels 4211 are vacuumed under the action of the air suction pump 422. Since the oblique air channel 431 connects the outside and the air suction, the air suction channel 431 is connected to the outside and the air suction. The air passage 4211 and the air pump 422 continue to pump air. The air in the oblique air passage 431 flows upward from the bottom, and the horizontal force drives the sealing cup 43 to rotate as a whole in the ring shell 423. Only when the three groups of sealing passages 432 correspond to the three groups of air extraction holes 4231 and the air extraction passage 4211, the sealing passage 432 is not connected to the outside world. The air pump 422 absorbs the sealing cup 43 through the sealing passage 432, and can perform self-positioning absorption on the sealing cup 43, ensuring that the striker 4432 is in the one-way valve plate. 446 is aligned above, and the reagent in the sealing cup 43 is shaken at the same time to prevent it from affecting the mixing effect due to long-term static sedimentation. The semi-column 421 is transferred as a whole to the mixing station and then lowered, and the semi-column 421 is placed in the sample solution. The servo motor 441 outputs a fixed-axis torque to the worm 442, and the slide 443 slides along the slide groove 4212 to the specified liquid layer. The servo cylinder 445 outputs to push the embedded table 444 to slide upward in the slide 443, and a negative pressure is generated between the bottom of the embedded table 444 and the bottom of the slide 443. The solution reagent of the specified liquid layer enters between the embedded table 444 and the slide 443 from the two-way valve hole 4433, and the servo motor 441 continuously outputs torque to make the bottom of the slide 443 contact the one-way valve plate 446. The striker 4432 pushes open the one-way valve plate 446, and the sample solution of the specified liquid layer is injected into the sealing cup 43. After the heavy metals in the sample are extracted through the reaction between the reagent and the sample, the mixing mechanism 4 transports the reagent tank to the reagent table 7, and the pipetting mechanism 6 extracts the sample solution and drops it on the reagent card on the reagent table 7 for detection.

[0050] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. An automated heavy metal detection device with an isolation sampling function, characterized in that: The detection device comprises a base (1), a box cover (2), a control panel (3), a liquid mixing mechanism (4), a feeding mechanism (5), a liquid transfer mechanism (6) and a reagent table (7); the liquid mixing mechanism (4) comprises a two-axis displacement module (41) and a sampling mechanism (44); the base (1) is fixedly connected to the box cover (2), the two-axis displacement module (41), the feeding mechanism (5), the liquid transfer mechanism (6) and the reagent table (7); the control panel (3) is connected to the two-axis displacement module (41) and the sampling mechanism (44) via electrical signals; a side slide (21) is provided on the box cover (2); the feeding mechanism (5) is arranged on a side of the base (1) close to the side slide (21); and the liquid transfer mechanism (6) is arranged on a side of the base (1) away from the side slide (21).

2. The automatic heavy metal detection device with isolation sampling function according to claim 1, characterized in that: The liquid mixing mechanism (4) further includes an adsorption mechanism (42), a sealing cup (43) and a sampling mechanism (44), wherein the adsorption mechanism (42) includes a semi-column (421) and an annular shell (423), and the sampling mechanism (44) includes a one-way valve plate (446). The semi-column (421) is fixedly connected to the two-axis displacement module (41) and the annular shell (423), and the sealing cup (43) is in contact with the annular shell (423). The sealing cup (43) is fixedly connected to the one-way valve plate (446). The feeding mechanism (5) includes a first transverse movement module (51), and the first transverse movement module (51), the two-axis displacement module (41) and the first transverse movement module (51) are arranged on the same side of the reagent table (7).

3. The automatic heavy metal detection device with isolation sampling function according to claim 2, characterized in that: The adsorption mechanism (42) further includes an air pump (422), an air extraction channel (4211) and a slide groove (4212) are provided on the semi-column (421), an air extraction hole (4231) is provided on the annular shell (423), the air extraction channel (4211) is in communication with the air extraction pump (422) and the air extraction hole (4231), the air extraction hole (4231) is in contact with the sealing cup (43), and the sampling mechanism (44) further includes a servo motor (441), a worm (441), and a plurality of other components. 42) and a slide (443), the servo motor (441) is fixedly connected to the slide (4212), the output end of the servo motor (441) is fixedly connected to the worm (442), the worm (442) is rotatably connected to the slide (4212), a threaded hole (4431) is provided on the slide (443), the worm (442) and the threaded hole (4431) are threadedly connected, and the slide (443) is slidably connected to the slide (4212).

4. The automatic heavy metal detection device with isolation sampling function according to claim 3, characterized in that: The sealing cup (43) is provided with an oblique air channel (431) and a sealing channel (432). The oblique air channel (431) is provided in several groups. The sealing channel (432), the air extraction hole (4231), and the air extraction channel (4211) are each provided in three groups. The several groups of the oblique air channels (431) are arranged along the circumference of the annular shell (423). The three groups of the sealing channels (432) are provided between two adjacent groups of oblique air channels (431). The spacing between adjacent sealing channels (432) and adjacent oblique air channels (431) is the same.

5. The automatic heavy metal detection device with isolation sampling function according to claim 3, characterized in that: The sampling mechanism (44) further includes an embedded platform (444) and a servo cylinder (445). The servo motor (441) and the servo cylinder (445) are both connected to the control panel (3) via electrical signals. The output end of the servo cylinder (445) is fixedly connected to the embedded platform (444). The embedded platform (444) is slidably connected to the slide (443). The slide (443) is further provided with a striker (4432) and a two-way valve hole (4433). The striker (4432) and the two-way valve hole (4433) are both provided at the bottom of the slide (443).

6. The automatic heavy metal detection device with isolation sampling function according to claim 2, characterized in that: The loading mechanism (5) further comprises a loading rack (52), a conveyor belt (53), a second transverse module (54), a loading rack (55) and a stirring mechanism (56), wherein the stirring mechanism (56) comprises a horizontal displacement module (561) and a cleaning tank (565), wherein the first transverse module (51), the conveyor belt (53), the second transverse module (54), the horizontal displacement module (561) and the cleaning tank (565) are all fixedly connected to the base (1), wherein the first transverse module (51) is arranged on a side of the base (1) away from the two-axis displacement module (41), wherein the loading rack (52) is slidably connected to the first transverse module (51), wherein the loading rack (55) is slidably connected to the second transverse module (54), and wherein the second transverse module (54) is arranged on a side of the base (1) close to the two-axis displacement module (41).

7. The automatic heavy metal detection device with isolation sampling function according to claim 6, characterized in that: The stirring mechanism (56) further comprises a vertical displacement module (562), a stirring motor (563) and a stirring paddle (564); the vertical displacement module (562) is slidably connected to the horizontal displacement module (561); the stirring motor (563) is slidably connected to the vertical displacement module (562); and the output end of the stirring motor (563) is fixedly connected to the stirring paddle (564).

8. The automatic heavy metal detection device with isolation sampling function according to claim 1, characterized in that: The pipetting mechanism (6) comprises a three-axis displacement module (61) and a pipetting gun (62), and the three-axis displacement module (61) is fixedly connected to the base (1) and the pipetting gun (62).

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