An automatic detection device for lead and chromium dissolution in ceramics

Abstract

The present invention discloses an automatic detection device for the amount of lead and chromium dissolution from ceramics, comprising a housing and a graphite furnace atomic absorption spectrometer disposed on the housing. The graphite furnace atomizer comprises a graphite tube with a sampling hole formed in the graphite tube. The apparatus also comprises a sample storage mechanism and a sampling mechanism disposed on the housing. The sample storage mechanism comprises a rotary drive unit and a sample storage container, the sample storage container being provided with a plurality of sample storage portions along a circumferential direction. The sampling mechanism comprises a guide frame fixedly mounted on the housing and a mobile sampler. The mobile sampler is driven by the motion drive unit to reciprocate along the guide frame and has a sampling working position and a liquid adding working position. The automatic detection device for the amount of lead and chromium dissolution from ceramics provided by the present invention can sample a sample solution in the sample storage container by means of the mobile sampler, and add the sample solution from the sampling hole into the graphite tube, thereby achieving automatic sampling and adding, and reducing the labor intensity of the staff.

Description

Technical Field

[0001] The invention relates to the technical field of ceramic component detection, in particular to an automatic detection device for lead and chromium dissolution amount in ceramics. Background Art

[0002] The release of heavy metals from household ceramics is a key safety and sanitation inspection item, drawing significant attention worldwide. For a long time, lead and cadmium release has been the primary testing standard for exported ceramics. Medical and health research indicates that cobalt is an essential element for the human body, crucial for the maturation of red blood cells. However, inorganic heavy metal salts such as lead, cobalt, cadmium, and barium that leach from household ceramics are highly toxic. Excessive exposure to these salts can cause serious illnesses, including goiter and progressive heart failure.

[0003] Currently, the main methods for analyzing the dissolution of heavy metals such as lead, cadmium, and cobalt from household ceramics include inductively coupled plasma atomic emission spectrometry, inductively coupled plasma atomic emission spectrometry-mass spectrometry, atomic absorption spectrometry (AAS), hydride generation-atomic fluorescence spectrometry, and others. Graphite furnace atomic absorption spectrometry is a commonly used method for testing the dissolution of lead and cadmium from ceramics. This method determines the content of compounds in a sample based on the Lambert-Beer law. Each element preferentially absorbs light of a specific wavelength because it requires a certain amount of energy to transition from its ground state to an excited state. During the detection process, ground-state atoms absorb characteristic radiation, and the degree of absorption by these atoms is measured to determine the content of the element being tested.

[0004] When performing detection through graphite furnace atomic absorption spectrometry, a graphite furnace atomic absorption spectrometer is often used, such as the patent with authorization announcement number CN217112054U and name Atomic Absorption Spectrometer, which includes a light source, an atomization system, a spectroscopic system and a detection system. The atomization system includes a graphite furnace atomizer, and the graphite furnace atomizer includes a graphite tube and a calibration tool. An injection hole is opened on the graphite tube, and the calibration tool is inserted into the interior of the graphite tube from the injection hole. The light beam of the light source passes through the graphite tube along the extension direction of the graphite tube, and the detection system corrects the position of the graphite furnace atomizer according to the luminous flux and / or absorbance of the light passing through the graphite tube.

[0005] The graphite furnace atomizer in the prior art is as shown in the attached Figure 1 (Appendix to the patent with authorization announcement number CN217112054U Figure 3), a sampling hole is opened on the graphite tube. During use, the sample solution is generally manually sucked through a pipette, and then squeezed into the inside of the graphite tube from the sampling hole. However, when detecting the amount of lead and cadmium dissolution in daily-use ceramics, the sample solution needs to be diluted to different concentrations. For example, the lead and cadmium standard solution is commonly diluted into standard sample solutions of 0, 10, 20, 30, 40, 50, 60, 80 and 100 ug / L respectively. Then, according to the working conditions of the instrument and the graphite furnace heating program conditions, the absorption of the standard sample solution is sequentially measured from low concentration to high concentration. In this process, if the standard sample solution is manually sampled and added, the labor intensity of the staff is increased, and mistakes are prone to occur, thereby affecting the accuracy of the detection. Summary of the Invention

[0006] The purpose of the present invention is to provide a device for automatically detecting the amount of lead and chromium dissolution in ceramics to solve the technical problems in the related art.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A device for automatically detecting the amount of lead and chromium dissolution from ceramics comprises a housing and a graphite furnace atomic absorption spectrometer arranged on the housing, the graphite furnace atomic absorption spectrometer comprising an absorption system, an optical system, an atomization system, and a signal detection system, the atomization system comprising a graphite furnace atomizer, the graphite furnace atomizer comprising a graphite tube with a sampling hole provided on the graphite tube, and further comprising a sample storage mechanism and a sampling mechanism arranged on the housing, the sample storage mechanism comprising a rotational drive unit and a sample storage connected to the rotational drive unit, the sample storage being circumferentially provided with a plurality of sample storage portions, the sampling mechanism comprising a guide frame fixedly mounted on the housing and a mobile sampler, the guide frame being provided with a motion drive unit, the mobile sampler being driven by the motion drive unit to reciprocate along the guide frame and having a sampling working position and a liquid adding working position.

[0009] The above-mentioned ceramic lead-chromium dissolution automatic detection device, the mobile sampler includes a cylindrical liquid pipette and a liquid collection head arranged at the bottom of the cylindrical liquid pipette, the interior of the cylindrical liquid pipette is provided with a cylindrical cavity, and the cylindrical cavity is provided with a liquid pipette piston.

[0010] In the above-mentioned automatic detection device for lead-chromium dissolution amount in ceramics, an annular connecting seat is provided on the top of the cylindrical liquid pipette, and a liquid pipetting driving component for driving the liquid pipetting piston is provided on the annular connecting seat.

[0011] In the above-mentioned automatic detection device for lead and chromium dissolution amount in ceramics, a vertical beam is provided on the horizontal movable seat, a vertical motion seat is slidably provided on the vertical beam, and the mobile sampler is installed on the vertical motion seat.

[0012] The above-mentioned ceramic lead-chromium dissolution automatic detection device also includes a vertical driving member, which is arranged on the vertical beam. The vertical motion seat is driven by the vertical driving member and can move up and down along the vertical beam.

[0013] The above-mentioned ceramic lead-chromium dissolution automatic detection device, the sample storage includes a circular seat and an annular storage member rotatably mounted on the circular seat, a rotation drive unit is provided at the bottom of the circular seat, and the annular storage member is driven by the rotation drive unit to perform rotational motion.

[0014] The above-mentioned ceramic lead-chromium dissolution automatic detection device, the sample storage part includes a plurality of cylindrical mounting holes arranged on the annular storage member, the plurality of cylindrical mounting holes are arranged in sequence along the circumference of the annular storage member, and the sample cup can be installed in the cylindrical mounting holes.

[0015] The above-mentioned ceramic lead and chromium dissolution automatic detection device further includes an annular housing, which is arranged around the circular seat, and an annular installation cavity for installing the annular storage element is formed between the annular housing and the circular seat;

[0016] The above-mentioned ceramic lead and chromium dissolution automatic detection device also includes an annular sealing member, which is detachably mounted on the top of the annular mounting cavity to seal and shield the annular storage member.

[0017] In the above-mentioned automatic detection device for lead-chromium dissolution amount in ceramics, the annular seal is provided with a circular opening at the positioning detection position, and an automatic opening and closing mechanism is provided on the circular opening. The automatic opening and closing mechanism has a large and small state for opening the circular opening and a closed state for closing the circular opening.

[0018] The beneficial effects of the present invention are as follows: the ceramic lead and chromium dissolution automatic detection device provided by the present invention comprises a box body and a graphite furnace atomic absorption spectrometer arranged on the box body, the graphite furnace atomic absorption spectrometer comprises an absorption system, an optical system, an atomization system and a signal detection system, the box body is provided with a sample storage mechanism and a sampling mechanism, the sample storage mechanism comprises a rotation drive unit and a sample storage connected to the rotation drive unit, the sample storage is provided with a plurality of sample storage parts along the circumference, the sampling mechanism comprises a guide frame fixedly mounted on the box body and a mobile sampler, through a plurality of sample storage parts The sample storage parts can respectively store sample solutions of different concentrations. When in use, the sample storage is driven by the rotation drive unit to enable each sample storage part to rotate to a preset positioning detection position. The mobile sampler located at the sampling working position is just above the sample storage part at the positioning detection position. In this way, the sample solution in the sample storage part can be sucked and sampled by the mobile sampler, and then the mobile sampler can move to the liquid adding working position to add the sample solution from the sampling hole to the graphite tube, thereby realizing automatic sampling and adding, reducing the labor intensity of the staff, reducing errors, and improving the accuracy of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a structural diagram of a graphite furnace atomizer in the prior art;

[0021] Figure 2 A front view of a device for automatically detecting lead and chromium dissolution from ceramics provided by an embodiment of the present invention;

[0022] Figure 3 A left side view of the automatic detection device for lead and chromium dissolution from ceramics provided in an embodiment of the present invention;

[0023] Figure 4 A schematic structural diagram of a mobile sampler provided in an embodiment of the present invention;

[0024] Figure 5 A schematic structural diagram of a sample storage device provided in an embodiment of the present invention;

[0025] Figure 6 A schematic structural diagram of a sample storage device provided in another embodiment of the present invention;

[0026] Figure 7A schematic structural diagram of an automatic opening and closing mechanism provided in another embodiment of the present invention;

[0027] Figure 8 A schematic diagram of the installation of an automatic opening and closing mechanism provided in another embodiment of the present invention;

[0028] Figure 9 A schematic structural diagram of a sample storage device provided in yet another embodiment of the present invention;

[0029] Figure 10 A schematic structural diagram of an automatic locking mechanism provided in yet another embodiment of the present invention;

[0030] Figure 11 A schematic structural diagram of a transmission plate provided in yet another embodiment of the present invention;

[0031] Figure 12 A schematic diagram of the installation of an automatic locking mechanism provided in yet another embodiment of the present invention;

[0032] Figure 13 This is a schematic diagram of the installation of an automatic locking mechanism and an automatic opening and closing mechanism provided in yet another embodiment of the present invention.

[0033] Description of reference numerals:

[0034] 1. Box; 10. Graphite furnace atomic absorption spectrometer; 11. Graphite furnace atomizer; 12. Graphite tube; 2. Sample storage mechanism; 20. Sample storage; 21. Rotary drive unit; 22. Sample storage; 23. Circular seat; 24. Annular storage element; 240. Cylindrical mounting hole; 25. Annular housing; 26. Annular seal; 260. Circular opening; 3. Sampling mechanism; 30. Guide frame; 31. Horizontal frame; 310. Upper frame; 311. Lower frame; 32. Vertical mounting frame; 33. Mobile drive unit; 34. Horizontal moving seat; 35. Vertical beam; 36. Vertical moving seat; 37. Vertical drive element; 4. Mobile sampler; 40. Cylindrical pipette; 400, conical connector; 41, liquid extraction head; 42, annular connector; 43, vertical connector; 44, pipetting drive member; 440, drive gear; 45, transmission connecting plate; 450, rack; 46, pipetting piston; 5, automatic opening and closing mechanism; 50, opening and closing drive assembly; 51, left opening and closing member; 510, left opening and closing plate; 511, left connecting block; 512, left motion block; 513, lower adjusting portion; 514, left drive chute; 52, right opening and closing member; 520, right opening and closing plate; 521, right connecting block; 522, right motion block; 523, upper adjusting portion; 524, right drive chute; 53, horizontal mounting plate; 530, guide seat; 531. First motion guide groove; 532. Second motion guide groove; 533. Guide groove; 54. Blocking drive member; 55. Horizontal drive seat; 550. Strip opening; 551. Columnar drive member; 56. Vertical blocking rod; 560. Circular blocking member; 57. Elastic blocking member; 58. Top connecting plate; 580. Guide rod; 59. Locking rod; 6. Automatic locking mechanism; 60. Vertical mounting bracket; 61. Left locking member; 610. Left locking guide body; 611. Left guide roller; 62. Right locking member; 620. Right locking guide body; 621. Right guide roller; 63. Left guide beam; 64. Right guide beam; 65. Locking section; 66. Motion section ; 67. Connecting spring; 68. Vertical driving body; 680. Vertical plate; 681. Vertical driving seat; 682. Rectangular section; 683. Isosceles triangle section; 684. Left inclined surface; 685. Right inclined surface; 69. Side mounting plate; 690. Upper movement hole; 691. Lower movement hole; 7. Limiting member; 70. First limiting plate; 71. Second limiting plate; 72. First connecting column; 73. Second connecting column; 730. Extending limiting portion; 74. Fixed section; 75. Movable section; 76. Limiting spring; 77. Transmission driving body; 770. Horizontal connecting rod; 771. Vertical transmission rod; 772. Limiting ring; 78. Transmission disk; 780. Annular eccentric groove. DETAILED DESCRIPTION

[0035] In order to make those skilled in the art better understand the technical solution of the present invention, Figure 1To the attached Figure 13 The present invention is further described in detail.

[0036] The present invention provides an automatic detection device for the amount of lead and chromium dissolution from ceramics, comprising a housing 1 and a graphite furnace atomic absorption spectrometer 10 arranged on the housing 1. The graphite furnace atomic absorption spectrometer 10 comprises an absorption system, an optical system, an atomization system, and a signal detection system. The atomization system comprises a graphite furnace atomizer 11, which comprises a graphite tube 12 with a sampling hole provided on the graphite tube 12. The device also comprises a sample storage mechanism 2 and a sampling mechanism 3 arranged on the housing 1. The sample storage mechanism 2 comprises a rotation drive unit 21 and a sample storage 20 connected to the rotation drive unit 21. The sample storage 20 is circumferentially provided with a plurality of sample storage portions 22. The sampling mechanism 3 comprises a guide frame 30 fixedly mounted on the housing 1 and a movable sampler 4. The guide frame 30 is provided with a motion drive unit. The movable sampler 4 is driven by the motion drive unit to reciprocate along the guide frame 30 to have a sampling working position and a liquid adding working position.

[0037] In this embodiment, the graphite furnace atomic absorption spectrometer 10 includes an absorption system, an optical system, an atomization system, and a signal detection system. The absorption system is mainly composed of a light source, a reflector, a standard sample, and other components. The light source emits a sharp line spectrum of the element to be measured. The absorption system can detect the spectrum absorbed by the sample atoms and obtain an absorption spectrum signal. The optical system is mainly composed of two parts: a detector and an optical spectrometer. The optical spectrometer is responsible for dividing the absorbed light into different wavelengths and sending them to the detector. The detector is responsible for converting the absorbed light signal into an electrical signal and performing signal amplification and processing. Through signal processing, the accurate concentration of the element in the sample can be obtained. The signal detection system is mainly composed of a signal amplifier, an analog-to-digital conversion module, and a computer control module. The signal detection system is used to amplify and process the detected signal to obtain a more accurate element concentration measurement value, and transmit the data to the computer control module for processing and storage. This is the prior art of the graphite furnace atomic absorption spectrometer 10, and its structure and principle are not repeated here.

[0038] In this embodiment, the atomization system includes a graphite furnace atomizer 11, which includes a graphite tube 12. Graphite tube 12 is made of graphite material and has good thermal conductivity and high-temperature resistance. A sampling port is provided on graphite tube 12, through which a sample solution to be tested can be added to graphite tube 12. During use, the temperature of graphite tube 12 is first adjusted to a suitable temperature, and then the sample solution is added to graphite tube 12. Heating causes the sample atoms to evaporate and ionize. This causes the atoms in the sample solution to evaporate, ionize, and be excited to high energy levels, thereby generating atomic absorption lines.

[0039] In order to adapt to the detection of standard sample solutions of different concentrations, a sample storage mechanism 2 and a sampling mechanism 3 are further provided in this embodiment. The sample storage mechanism 2, the sampling mechanism 3 and the graphite furnace atomic absorption spectrometer 10 are all arranged on the box 1. The sample storage mechanism 2 includes a sample storage 20 and a rotation drive unit 21. A plurality of sample storage parts 22 are provided on the sample storage 20. The plurality of sample storage parts 22 are arranged in sequence along the circumference of the sample storage 20. The sample storage 20 is connected to the rotation drive unit 21. The sample storage 20 is driven by the rotation drive unit 21 so that each sample storage part 22 can be rotated to a preset positioning detection position. When the sample storage part 22 is at the positioning detection position, the sample storage part 22 corresponds to the sampling mechanism 3. At this time, the sample solution in the sample storage part 22 can be absorbed by the sampling mechanism 3.

[0040] In this embodiment, the sampling mechanism 3 includes a guide frame 30 and a mobile sampler 4. The guide frame 30 is fixedly mounted on the box body 1. The guide frame 30 includes a horizontal frame 31 and a vertical mounting frame 32. The lower end of the vertical mounting frame 32 is fixedly mounted on the box body 1. The horizontal frame 31 is fixedly mounted on the vertical mounting frame 32. A guide rail and a mobile drive unit 33 are provided on the horizontal frame 31. The mobile drive unit 33 can be a cylinder drive structure or a motor drive structure. A horizontal movable seat 34 is provided on the guide rail. The mobile sampler 4 is mounted on the horizontal movable seat 34. The horizontal movable seat 34 is driven by the mobile drive unit 33 and can reciprocate along the horizontal frame 31. The horizontal movable seat 34 and the mobile sampler 4 reciprocate along the horizontal frame 31 and have two working positions: a sampling working position and a liquid adding working position. When the horizontal movable seat 34 and the mobile sampler 4 move to the sampling working position, the mobile sampler 4 corresponds to one of the sample storage parts 22 (located directly above the sample storage part 22). The sample solution in the sample storage part 22 can be absorbed by the downward movement of the mobile sampler 4. When the horizontal movable seat 34 and the mobile sampler 4 move to the liquid adding working position, the mobile sampler 4 corresponds to the sampling hole on the graphite tube 12. The sample solution can be automatically added from the sampling hole to the graphite tube 12 through the mobile sampler 4.

[0041] The present invention provides an automatic detection device for the amount of lead and chromium dissolution from ceramics, comprising a housing 1 and a graphite furnace atomic absorption spectrometer 10 arranged on the housing 1. The graphite furnace atomic absorption spectrometer 10 comprises an absorption system, an optical system, an atomization system, and a signal detection system. The housing 1 is provided with a sample storage mechanism 2 and a sampling mechanism 3. The sample storage mechanism 2 comprises a rotation drive unit 21 and a sample storage 20 connected to the rotation drive unit 21. The sample storage 20 is provided with a plurality of sample storage parts 22 along the circumference. The sampling mechanism 3 comprises a guide frame 30 fixedly mounted on the housing 1 and a mobile sampler 4. The plurality of sample storage parts 22 can be used to The sample solutions of different concentrations are stored respectively. When in use, the sample storage 20 is driven by the rotation drive unit 21 to enable each sample storage part 22 to rotate to a preset positioning detection position. The mobile sampler 4 located at the sampling working position is just above the sample storage part 22 at the positioning detection position. In this way, the sample solution in the sample storage part 22 can be sucked and sampled by the mobile sampler 4. Then the mobile sampler 4 can move to the liquid adding working position to add the sample solution from the injection hole to the graphite tube 12, thereby realizing automatic sampling and adding, reducing the labor intensity of the staff, reducing errors, and improving the accuracy of detection.

[0042] In the embodiment provided by the present invention, preferably, the mobile sampler 4 includes a cylindrical liquid pipette 40 and a liquid sampling head 41 arranged at the bottom of the cylindrical liquid pipette 40, a conical connecting head 400 is arranged at the bottom of the cylindrical liquid pipette 40, and the liquid sampling head 41 is detachably mounted on the conical connecting head 400, the interior of the cylindrical liquid pipette 40 is hollow to form a cylindrical cavity, and a sampling channel connected to the cylindrical cavity is arranged inside the conical connecting head 400, when the liquid sampling head 41 is installed on the conical connecting head 400, the liquid sampling head 41 is connected to the sampling channel inside the conical connecting head 400, and a liquid suction piston 46 is arranged in the cylindrical cavity, the liquid suction piston 46 moves upward in the cylindrical cavity, so that the sample solution can be sucked into the liquid sampling head 41, the sampling channel and the cylindrical cavity, and when the liquid suction piston 46 moves downward in the cylindrical cavity, the sample solution can be output from the cylindrical cavity, the sampling channel and the liquid sampling head 41.

[0043] In the embodiment provided by the present invention, preferably, an annular connecting seat 42 is provided at the top of the cylindrical liquid pipette 40, and a vertical connecting frame 43 is provided on the annular connecting seat 42. The liquid pipette drive component 44 includes a driving motor provided on the vertical connecting frame 43 and a driving shaft connected to the driving motor, a driving gear 440 is provided on the driving shaft, and a transmission connecting rod is provided on the liquid pipette piston 46. A transmission connecting rod is provided on the top of the transmission connecting rod, and a rack 450 is provided on the transmission connecting plate 45. The rack 450 is engaged with the driving gear 440 on the driving shaft. In this way, when the driving shaft is driven to rotate, the corresponding driving gear transmission connecting plate 45 can move up and down, so that the liquid pipette piston 46 is driven to move up and down along the cylindrical cavity.

[0044] In another embodiment provided by the present invention, preferably, a vertical beam 35 is provided on the horizontal movable seat 34, a vertical guide rail is provided on the vertical beam 35, a vertical motion seat 36 is provided on the vertical guide rail, and a vertical driving member 37 is provided on the vertical beam 35. The vertical motion seat 36 is driven by the vertical driving member 37 and can move up and down along the vertical guide rail. The vertical connecting frame 43 is fixedly installed with the horizontal movable seat 34. The vertical motion seat 36 moves up and down along the vertical guide rail to adjust the height of the mobile sampler 4. In this way, during use, the horizontal movable seat 34 is driven by the mobile driving unit 33 to move along the horizontal frame 31 to adjust the horizontal position of the mobile sampler 4. When the mobile sampler 4 moves to the sampling working position or the liquid adding working position, the vertical motion seat 36 is driven by the vertical driving member 37 to make the mobile sampler 4 move downward, and the liquid sampling head 41 of the mobile sampler 4 can be inserted into the sample cup or the sampling hole on the graphite tube 12.

[0045] Obviously, the movement of a target such as the mobile sampler 4 in three-dimensional space can also adopt other driving mechanisms, which are all existing technologies and will not be described in detail.

[0046] In the embodiment provided by the present invention, preferably, the sample storage 20 includes a circular seat 23, an annular storage member 24 and a rotating drive member arranged at the bottom of the circular seat 23, the rotating drive member is connected to the rotating drive unit 21, the annular storage member 24 is mounted on the circular seat 23 in a circular manner, and the annular storage member 24 can rotate relative to the circular seat 23. An annular shell 25 is provided on the outside of the annular storage member 24, that is, the annular storage member 24 is located between the circular seat 23 and the annular shell 25, and the sample storage portion 22 includes a plurality of cylindrical mounting holes 240 provided on the annular storage member 24, and the plurality of cylindrical mounting holes 240 are arranged in sequence along the circumference of the annular storage member 24. The size of each cylindrical mounting hole 240 is set as needed, so that a sample cup containing a sample solution can be mounted in the cylindrical mounting hole 240. Optionally, in order to enable the sample cup to be fixedly placed in the cylindrical mounting hole 240, a fixing structure for fixing the sample cup can also be provided inside the cylindrical mounting hole 240.

[0047] In another embodiment provided by the present invention, preferably, the rotary drive member is in transmission connection with the annular storage member 24, so that the annular storage member 24 rotates at equal angles each time. The rotary drive member can adopt an equally divided indexing plate or other driving structure in the prior art, so that the annular storage member 24 rotates at a certain angle each time. For example, if 18 cylindrical mounting holes 240 are provided on the annular storage member 24, the annular storage member 24 rotates 20 degrees each time the rotary drive member drives the annular storage member 24, so that each cylindrical mounting hole 240 and the cylindrical mounting hole 240 are rotated at an equal angle each time. Each sample cup on 240 can be rotated to the detection position, and the sample cup in the detection position is directly below the mobile sampler 4 in the sampling working position, so that the mobile sampler 4 can aspirate and sample the sample solution in the sample cup. When the solution in the next sample cup needs to be sampled, the annular storage member 24 is driven by the rotary drive member, causing the annular storage member 24 to rotate another 20 degrees, and the next sample cup is rotated to the detection position. This cycle repeats, and the sample solution in each sample cup is sampled and tested. Rotational drive is the most basic drive method, which can be achieved by meshing gear rings. This is a prior art and will not be described in detail.

[0048] The graphite furnace atomic absorption spectrometry (GFAAS) measurement process involves four main stages: drying, ashing, atomization, and cleaning. Matrix interference can occur during the ashing and atomization stages. Matrix modifiers can improve the thermal stability of the sample solution, preserving the loss of the analyte at higher ashing temperatures. Common matrix modifiers include magnesium nitrate, nickel nitrate, and diammonium hydrogen phosphate-ammonium molybdate. If the annular storage element 24 remains open during the sampling process, the matrix modifier can evaporate, absorb moisture, or become contaminated, causing changes in the sample solution concentration and affecting the measurement results. Therefore, in another embodiment of the present invention, an annular seal 26 is further provided. An annular mounting cavity for the annular storage element 24 is formed between the outer wall of the circular seat 23 and the inner wall of the annular housing 25. The annular seal 26 is removably mounted to the annular mounting cavity. The annular seal 26 covers and shields the annular storage element 24 within the annular mounting cavity, effectively closing the annular seal 26 and preventing the sample solution in the sample cup from being directly exposed to air during the measurement process.

[0049] In another embodiment provided by the present invention, the annular seal 26 is preferably provided with a circular opening 260 at the positioning detection position. The size of the circular opening 260 corresponds to the sample cup and the mobile sampler 4, so that the liquid sampling head 41 on the mobile sampler 4 can extend into the sample cup through the circular opening 260. An automatic opening and closing mechanism 5 is also provided on the circular opening 260. The automatic opening and closing mechanism 5 is mounted on the circular seat 23. The automatic opening and closing mechanism 5 includes an opening and closing drive assembly 50 and a left opening and closing member 51 and a right opening and closing member 52 arranged opposite to each other. The left opening and closing member 51 and the right opening and closing member 52 are both connected to the opening and closing drive assembly 50. The left opening and closing member 51 and the right opening and closing member 52 are driven by the opening and closing drive assembly 50 to have a closed state and an open state. In the closed state, the left opening and closing member 51 and the right opening and closing member 52 close the circular opening 260. In the open state, the left opening and closing member 51 and the right opening and closing member 52 separate, thereby opening the circular opening 260.

[0050] The left opening and closing member 51 includes a left opening and closing plate 510 and a left connecting block 511 arranged on the left opening and closing plate 510, and the connection between the left connecting block 511 and the left opening and closing plate 510 forms an L-shaped structure. Similarly, the right opening and closing member 52 includes a right opening and closing plate 520 and a right connecting block 521 arranged on the right opening and closing plate 520, and the connection between the right connecting block 521 and the right opening and closing plate 520 also forms an L-shaped structure. The left opening and closing plate 510 and the right opening and closing plate 520 have the same shape and size and correspond to the circular opening 260.

[0051] In another embodiment provided by the present invention, preferably, the opening and closing drive assembly 50 includes a horizontal mounting plate 53, a guide seat 530 is provided at the end of the horizontal mounting plate 53, and a first motion guide groove 531 and a second motion guide groove 532 perpendicular to each other are provided on the guide seat 530, the second motion guide groove 532 is provided along the length direction of the horizontal mounting plate 53, a left motion block 512 is provided on the left connecting block 511, and a right motion block 522 is provided on the right connecting block 521, and the left motion block 512 and the right motion block 522 are both slidably connected in the first motion guide groove 531, and the left motion block 512 is provided with a thickness on the side away from the left connecting block 511. The lower adjusting portion 513 is smaller, and the thickness of the lower adjusting portion 513 is less than half of the thickness of the left moving block 512. The side of the right moving block 522 away from the right connecting block 521 is provided with an upper adjusting portion 523 with a smaller thickness, and the thickness of the upper adjusting portion 523 is less than half of the thickness of the right moving block 522. During the installation process, the lower adjusting portion 513 and the upper adjusting portion 523 overlap in the vertical direction, and the lower adjusting portion 513 is located directly above the upper adjusting portion 523. At the same time, a left driving inclined groove 514 is provided on the lower adjusting portion 513, and a right driving inclined groove 524 is provided on the upper adjusting portion 523. The left driving inclined groove 514 and the right driving inclined groove 524 are arranged in an eight-shaped shape.

[0052] In another embodiment provided by the present invention, preferably, the opening and closing drive assembly 50 further includes a blocking drive member 54, which includes a horizontal drive seat 55 and a vertical blocking rod 56 provided on the horizontal drive seat 55, the horizontal drive seat 55 is slidably connected to the second motion guide groove 532, and an elastic blocking member 57 is provided in the second motion guide groove 532. The elastic blocking member 57 can be a spring, and the elastic blocking member 57 blocks the motion of the horizontal drive seat 55 along the second motion guide groove 532. When the elastic blocking member When 57 is in the initial state, the left opening and closing plate 510 and the right opening and closing plate 520 are in the closed state, and a strip-shaped opening portion 550 is provided on the horizontal driving seat 55. The size of the strip-shaped opening portion 550 is set corresponding to the thickness of the lower adjusting portion 513 and the upper adjusting portion 523. During the installation process, the lower adjusting portion 513 and the upper adjusting portion 523 are located in the strip-shaped opening portion 550. A columnar driving member 551 is fixedly provided in the strip-shaped opening portion 550 of the horizontal driving seat 55. During installation, the columnar driving member 551 passes through the left driving inclined slot 513 in sequence. 4 and the right driving inclined groove 524, and since the left moving block 512 and the right moving block 522 are restricted in the first motion guide groove 531, the left moving block 512 and the right moving block 522 can only move along the width direction of the horizontal mounting plate 53. In this way, when the horizontal driving seat 55 moves along the second motion guide groove 532, the cylindrical moving part moves along the second motion guide groove 532 while also moving in the left driving inclined groove 514 and the right driving inclined groove 524, so that the left moving block 512 and the right moving block 522 are brought into contact with each other. When the left moving block 512 and the right moving block 522 are driven to move closer to each other, the left opening and closing plate 510 and the right opening and closing plate 520 also move in a direction of approaching each other until the left opening and closing plate 510 and the right opening and closing plate 520 close the circular opening 260. When the left moving block 512 and the right moving block 522 are driven to move away from each other, the left opening and closing plate 510 and the right opening and closing plate 520 also move in a direction of separating from each other until the left opening and closing plate 510 and the right opening and closing plate 520 open the circular opening 260.

[0053] In another embodiment provided by the present invention, preferably, the lower end of the vertical blocking rod 56 is fixedly mounted on the horizontal driving seat 55, and a top connecting portion 58 is provided at the top of the vertical blocking rod 56, and guide rods 580 are provided on the opposite sides of the top connecting portion 58. A guide groove 533 parallel to the second movement guide groove 532 is provided on the horizontal mounting plate 53, and the lower end of the guide rod 580 is slidably restricted in the guide groove 533. A circular blocking member 560 is also provided on the top connecting portion 58, and the horizontal frame 31 includes an upper frame 310 and a lower frame 311 parallel to each other. The horizontal movable seat 34 is slidably connected to the upper frame 310, and the annular connecting seat 42 on the pipette sampler is slidably connected to the lower frame 311. The circular blocking member 560 is also slidably connected to the lower frame 311, and the circular blocking member 560 blocks the movement stroke of the annular connecting seat 42 along the lower frame 311.

[0054] When the horizontal movable seat 34 is driven along the upper frame 310 from the liquid adding working position to the sampling working position, the annular connecting seat 42 first contacts the circular blocking member 560. As the horizontal movable seat 34 continues to move, the annular connecting seat 42 drives the circular blocking member 560. In order to make the annular connecting seat 42 and the circular blocking member 560 just correspond to each other to achieve the pressing drive, an arc-shaped groove matching the circular blocking member 560 can be provided on the annular connecting seat 42. In this way, when the annular connecting seat 42 contacts the circular blocking member 560, the annular connecting seat 42 and the circular blocking member 560 are in contact. When the left and right opening and closing plates 510 and 520 are in contact with each other, the circular blocking member 560 is located in the arc-shaped groove, so that the circular blocking member 560, the vertical blocking rod 56 and the horizontal driving seat 55 move along the second movement guide groove 532, so that the left opening and closing plate 510 and the right opening and closing plate 520 move away from each other. During this process, the horizontal driving seat 55 presses the elastic blocking member 57 to make it in a compressed state and elastic. When the left and right opening and closing plates 510 and 520 open the circular opening 260, the horizontal moving seat 34 just moves to the sampling working position, and then the sampling operation can be carried out;

[0055] When the sampling operation is completed, the horizontal movable seat 34 moves along the upper frame 310 to the liquid adding working position, and the pressing force of the annular connecting seat 42 on the circular blocking member 560 gradually disappears. Under the action of the elastic blocking member 57, the circular blocking member 560, the vertical blocking rod 56 and the horizontal driving seat 55 move along the second movement guide groove 532, so that the left opening and closing plate 510 and the right opening and closing plate 520 move in a direction approaching each other until the left opening and closing plate 510 and the right opening and closing plate 520 close the circular opening 260. In this way, each time a sampling operation is performed, the left opening and closing plate 510 and the right opening and closing plate 520 above the sample cup at the positioning detection position are automatically opened or closed, reducing manual operation and improving the efficiency of sampling detection.

[0056] Since each sample cup can store sample solutions of different concentrations, in order to improve the accuracy of the test, the mobile sampler 4 needs to be cleaned (or the liquid sampling head 41 is replaced) before sampling the sample solutions of different concentrations. However, in the actual automatic sampling operation, it is often the case that the cleaning operation (or the liquid sampling head 41 is replaced) is not performed and sampling is performed directly, which will affect the test results and make the test results inaccurate. Therefore, in another embodiment provided by the present invention, an automatic locking mechanism 6 is further provided, and the automatic locking mechanism 6 is correspondingly provided with the automatic opening and closing mechanism 5, and the effect achieved is: when multiple sampling operations are performed on the same sample cup, the annular connecting seat 42 can automatically open the left opening and closing plate 510 and the right opening and closing plate 520, and then the sampling operation is performed, that is, the automatic locking mechanism 6 is always in an unlocked state during this process, and when the rotary driving member drives the annular storage member 24 to rotate the next sample cup to the positioning detection position, the rotary driving member locks the automatic opening and closing mechanism 5 through the automatic locking mechanism 6, and the automatic locking mechanism 6 is in a locked state. At this time, the annular connecting seat 42 cannot open the left opening and closing plate 510 and the right opening and closing plate 520, and the operator needs to manually confirm and unlock the automatic locking mechanism 6, so that the automatic locking mechanism 6 is restored to the unlocked state, and then the annular connecting seat 42 moves to open the left opening and closing plate 510 and the right opening and closing plate 520 to perform the liquid sampling operation.

[0057] In another embodiment provided by the present invention, preferably, the automatic locking mechanism 6 includes a vertical mounting bracket 60 and a left locking piece 61 and a right locking piece 62 arranged opposite to each other, a locking rod 59 is provided on the horizontal driving seat 55, the locking rod 59 is arranged perpendicular to the horizontal mounting plate 53, a mounting opening is provided on the circular seat 23, the lower end of the locking rod 59 extends from the mounting opening to the bottom of the circular seat 23 and is connected to a circular locking portion, a left guide beam 63 and a right guide beam 64 are provided on the vertical mounting bracket 60, the left guide beam 63 and the right guide beam 64 both include two parallel beam bodies, the beam body and the vertical mounting bracket 60 can be installed at the bottom of the circular seat 23, the left locking piece 61 and the right locking piece 62 both include a connected locking section 65 and a moving section 66, the moving section 66 is provided with a moving groove corresponding to the beam body, the moving section 66 of the left locking piece 61 is slidably connected to the left guide beam 63, and the moving section 66 of the right locking piece 62 is slidably connected to the right guide beam 64.

[0058] A connecting spring 67 is provided between the left locking piece 61 and the right locking piece 62, and the connecting spring 67 is arranged as follows: when the connecting spring 67 is in the initial state, the locking segments 65 of the left locking piece 61 and the right locking piece 62 are close to each other, clamping and locking the circular locking part or the locking rod 59, that is, the automatic locking mechanism 6 is in a locked state, thereby achieving the locking of the automatic opening and closing mechanism 5; when the left locking piece 61 and the right locking piece 62 are in a separated state, that is, there is a certain gap between the locking segments 65 of the left locking piece 61 and the right locking piece 62, and the gap is larger than the size of the circular locking part and the locking rod 59, so that the circular locking part or the locking rod 59 can move along the gap, and at this time the automatic locking mechanism 6 is always in an unlocked state.

[0059] In another embodiment provided by the present invention, preferably, the automatic locking mechanism 6 also includes a vertical driving body 68, a vertical guide beam is provided on the vertical mounting frame 32, the vertical driving body 68 is slidably connected to the vertical guide beam, the vertical driving body 68 includes a vertical plate 680 and a vertical driving seat 681, the vertical driving seat 681 is provided with a vertical groove corresponding to the vertical guide beam, so that the vertical motion seat 36 is slidably connected to the vertical guide beam, the vertical plate 680 includes a connected rectangular segment 682 and an isosceles triangle segment 683, a left inclined surface 684 and a right inclined surface 685 are formed on the isosceles triangle segment 683, and the rectangular segment 682 is connected to the vertical guide beam. A restricted opening is provided at the connection of the isosceles triangle segment 683, and a left locking guide body 610 is fixedly provided at the bottom of the left locking piece 61, and the left locking guide body 610 can be fixedly connected to the left locking piece 61 through a connecting rod. A right locking guide body 620 is provided at the bottom of the right locking piece 62, and the right locking guide body 620 can be fixedly connected to the right locking piece 62 through a connecting rod. A left guide roller 611 is provided on the left locking guide piece, and a right guide roller 621 is provided on the right locking guide piece. The left guide roller 611 and the right guide roller 621 are respectively provided to form a left inclined surface 684 and a right inclined surface 685 corresponding to the isosceles triangle segment 683.

[0060] When the vertical driving body 68 moves upward along the vertical guide beam, the left inclined surface 684 and the right inclined surface 685 press against the left guide roller 611 and the right guide roller 621 respectively, so that the left locking piece 61 and the right locking piece 62 move in the direction of separating from each other, so that the left locking piece 61 and the right locking piece 62 are in a phase-separated state, that is, there is a certain gap between the locking segments 65 of the left locking piece 61 and the right locking piece 62. During this process, the connecting spring 67 is stretched and has elasticity. Conversely, when the vertical driving body 68 moves downward along the vertical guide beam, the pressure of the left inclined surface 684 and the right inclined surface 685 on the left guide roller 611 and the right guide roller 621 disappears. Under the action of the connecting spring 67, the left locking piece 61 and the right locking piece 62 move in the direction of approaching each other until the locking segments 65 of the left locking piece 61 and the right locking piece 62 are close to each other, clamping and locking the circular locking portion or locking rod 59.

[0061] In another embodiment provided by the present invention, preferably, the automatic locking mechanism 6 also includes a limiting member 7, a side mounting plate 69 is provided on one side of the vertical mounting frame 32, and an upper movement hole 690 and a lower movement hole 691 are provided on the side mounting plate 69, and the limiting member 7 includes a first limiting plate 70 and a second limiting plate 71 parallel to each other, and the first limiting plate 70 and the second limiting plate 71 are connected by a first connecting column 72 and a second connecting column 73, and the first connecting column 72 extends from the end surface of the first limiting plate 70 to form an extending limiting portion 730, and the first connecting column 72 and the second connecting column 73 each include two sections connected to each other, namely a fixed section 74 and a movable section 75, the fixed section 74 is fixedly mounted on the second limiting plate 71, and the movable section 75 is fixedly mounted on the first limiting plate 70, and a movement channel for the movable section 75 to move is provided in the fixed section 74.

[0062] The first connecting column 72 and the second connecting column 73 are movably installed in the upper movement hole 690 and the lower movement hole 691 respectively, and the first limiting plate 70 and the second limiting plate 71 are respectively located on both sides of the side mounting plate 69. The first limiting plate 70 is located on the side of the side mounting plate 69 corresponding to the vertical driving body 68, and the extending limiting portion 730 is arranged corresponding to the limiting opening. A limiting spring 76 is arranged on the second connecting column 73, and the two ends of the limiting spring 76 are respectively connected to the first limiting plate 70 and the side mounting plate 69.

[0063] The vertical driving body 68 is restricted by the extension limiting portion 730 along the vertical guide beam and has two working modes: a first working position and a second working position; in the first working position, the extension limiting portion 730 is located at the bottom of the vertical plate 680, and the extension limiting portion 730 supports the vertical plate 680. At this time, the position of the vertical driving body 68 is higher, so that the vertical plate 680 cannot move downward, and the left locking member 61 and the right locking member 62 are in a phase-separated state, and the connecting spring 67 is stretched and elastic; when the limiting member 7 is driven so that the extension limiting portion 730 leaves the vertical plate 680 and cannot support the vertical plate 680 (the limit spring 76 is in a compressed state, the extension limiting portion 730 is in contact with the vertical plate Straight plate 680 is separated), under the action of connecting spring 67, the left locking member 61 and the right locking member 62 can move in the direction of approaching each other, and the left guide roller 611 and the right guide roller 621 drive the left inclined surface 684 and the right inclined surface 685 respectively, so that the vertical drive body 68 moves downward along the vertical guide beam. When the locking sections 65 of the left locking member 61 and the right locking member 62 are close to each other, the vertical drive body 68 no longer moves, that is, the vertical drive body 68 is in the second working position. At this time, the limiting member 7 is released, and under the action of the limit spring 76, the limiting portion 730 is extended and embedded in the limiting opening, so that the vertical drive body 68 is locked in the second working position.

[0064] In another embodiment provided by the present invention, preferably, an L-shaped transmission driving body 77 is provided on one side of the second limiting plate 71, and the transmission driving body 77 includes a horizontal connecting rod 770 and a vertical transmission rod 771 connected to each other. The horizontal connecting rod 770 is fixedly installed on one side of the second limiting plate 71, and a limiting ring 772 is provided on the upper end of the vertical transmission rod 771. A transmission disk 78 is provided at the bottom of the circular seat 23. The transmission disk 78 is connected to the rotating driving member through a transmission gear assembly, so that every time the rotating driving member rotates a certain angle, the next sample cup rotates to the positioning detection position, and the transmission disk 78 rotates one circle during this process. For example: 18 cylindrical mounting holes 240 are provided on the annular storage member 24, and each time the annular storage member 24 is driven once by the rotating driving member, the annular storage member 24 rotates 20 degrees, and the transmission disk 78 rotates one circle during this process.

[0065] At the same time, an annular eccentric groove 780 is eccentrically provided on the rotating disk, and the limiting ring 772 at the upper end of the vertical transmission rod 771 is located in the annular eccentric groove 780, so that a maximum distance position with the maximum distance from the second limiting plate 71 and a minimum distance position with the minimum distance from the second limiting plate 71 are formed on the annular eccentric groove 780. When the sample cup rotates to the positioning detection position, the minimum distance position of the annular eccentric groove 780 corresponds to the second limiting plate 71, so that the extended limiting portion 730 is in a restricted state, and the extended limiting portion 730 is located at the bottom of the vertical plate 680 and supports the vertical plate 680, and the vertical driving body 68 is restricted to the first working position.

[0066] When the rotating disk is driven to rotate, it is divided into two processes: in the first rotation process, the rotation angle of the rotating disk is 180°. At this time, the distance between the annular eccentric groove 780 and the second limiting plate 71 moves from the minimum distance position to the maximum distance position. The annular eccentric groove 780 pulls the vertical transmission rod 771 and the horizontal connecting rod 770, so that the first limiting plate 70 moves toward the installation side plate direction. In this way, the limiting part leaves the vertical plate 680 and cannot support the vertical plate 680. The limit spring 76 is compressed and is in a compressed state. Under the action of the connecting spring 67, the left locking member 61 and the right locking member 62 move in a direction approaching each other, so that the vertical driving body 68 moves downward along the vertical guide beam until the locking sections 65 of the left locking member 61 and the right locking member 62 are close to each other. During the second rotation process, the rotation angle of the rotating disk is also 180°. At this time, the distance between the annular eccentric groove 780 and the second limiting plate 71 moves from the maximum distance position to the minimum distance position. The annular eccentric groove 780 pushes the vertical transmission rod 771 and the horizontal connecting rod 770, and the first limiting plate 70 moves away from the mounting side plate, so that the extended limiting portion 730 is embedded in the limiting opening to lock the vertical driving body 68. At this time, the next sample cup just rotates to the positioning detection position.

[0067] In another embodiment provided by the present invention, an unlocking operating rod (not shown in the figure) is optionally included, by which the automatic locking mechanism 6 can be operated to move the automatic locking mechanism 6 from the locked state to the unlocked state. The unlocking operating rod can be one or two, and its unlocking operation is: first, the first limiting plate 70 is pressed by the unlocking operating rod, so that the first connecting column 72 and the second connected movable section 75 move toward the fixed section 74 until the extension limiting portion 730 leaves the limiting opening. During this process, the limiting spring is compressed and has elasticity. Subsequently, the vertical driving body 68 is driven by the unlocking operating rod, and the vertical driving body 68 moves from the second working position to the first working position along the vertical guide beam. At this time, under the action of the limiting spring, the first limiting plate 70 and the extension limiting portion 730 return to their initial positions. The extension limiting portion 730 is located at the bottom of the vertical plate 680 and supports the vertical plate 680, thereby completing the unlocking operation.

[0068] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A device for automatically detecting the amount of lead and chromium dissolution from ceramics, comprising a housing and a graphite furnace atomic absorption spectrometer disposed on the housing, the graphite furnace atomic absorption spectrometer comprising an absorption system, an optical system, an atomization system, and a signal detection system, the atomization system comprising a graphite furnace atomizer, the graphite furnace atomizer comprising a graphite tube, and a sampling hole being provided on the graphite tube, characterized in that: The invention also includes a sample storage mechanism and a sampling mechanism arranged on the box body, the sample storage mechanism includes a rotation drive unit and a sample storage connected to the rotation drive unit, the sample storage is circumferentially provided with a plurality of sample storage parts, the sample storage includes a circular seat and an annular storage member rotatably mounted on the circular seat, the sampling mechanism includes a guide frame fixedly mounted on the box body and a mobile sampler, the guide frame is provided with a motion drive unit, the mobile sampler includes a cylindrical liquid pipette, the top of the cylindrical liquid pipette is provided with an annular connecting seat, the mobile sampler is driven by the motion drive unit to reciprocate along the guide frame and has a sampling working position and a liquid adding working position; The sample storage device further comprises an annular sealing member, wherein the annular sealing member is provided with a circular opening at a positioning detection position, and an automatic opening and closing mechanism is provided on the circular opening, wherein the automatic opening and closing mechanism has an open state for opening the circular opening and a closed state for closing the circular opening; The automatic opening and closing mechanism includes an opening and closing drive assembly and a left opening and closing member and a right opening and closing member arranged opposite to each other, wherein the left opening and closing member and the right opening and closing member are driven by the opening and closing drive assembly to have a closed state and an open state, and the opening and closing drive assembly includes a blocking drive member, the annular connecting seat on the mobile sampler is slidably connected to the lower frame, the circular blocking member of the blocking drive member is also slidably connected to the lower frame, and the circular blocking member blocks the movement of the annular connecting seat along the lower frame; An automatic locking mechanism is also provided, which is provided corresponding to the automatic opening and closing mechanism. When the automatic locking mechanism is in a locked state, the annular connecting seat cannot open the left opening and closing plate and the right opening and closing plate.

2. The automatic detection device for lead and chromium dissolution in ceramics according to claim 1, characterized in that: The mobile sampler comprises a liquid collecting head arranged at the bottom of the cylindrical liquid pipette. A cylindrical cavity is arranged inside the cylindrical liquid pipette, and a liquid collecting piston is arranged in the cylindrical cavity.

3. The automatic detection device for lead and chromium dissolution in ceramics according to claim 2, characterized in that: The annular connecting seat is provided with a liquid suction driving component for driving the liquid suction piston.

4. The automatic detection device for lead and chromium dissolution in ceramics according to claim 1, characterized in that: The guide frame is provided with a horizontal moving seat, the horizontal moving seat is provided with a vertical beam, a vertical moving seat is slidably provided on the vertical beam, and the mobile sampler is installed on the vertical moving seat.

5. The automatic detection device for lead and chromium dissolution from ceramics according to claim 4, characterized in that: It also includes a vertical driving member, which is arranged on the vertical beam. The vertical motion seat is driven by the vertical driving member and can move up and down along the vertical beam.

6. The automatic detection device for lead and chromium dissolution in ceramics according to claim 1, characterized in that: A rotation drive unit is provided at the bottom of the circular seat, and the annular storage element is driven by the rotation drive unit to perform rotational motion.

7. The automatic detection device for lead and chromium dissolution in ceramics according to claim 6, characterized in that: The sample storage portion includes a plurality of cylindrical mounting holes provided on the annular storage member. The plurality of cylindrical mounting holes are sequentially spaced apart along the circumference of the annular storage member. Sample cups can be mounted in the cylindrical mounting holes.

8. The automatic detection device for lead and chromium dissolution from ceramics according to claim 7, characterized in that: It also includes an annular shell, which is arranged around the circular seat. An annular installation cavity for installing the annular storage element is formed between the annular shell and the circular seat.

9. The automatic detection device for lead and chromium dissolution in ceramics according to claim 8, characterized in that: The annular sealing member is detachably mounted on the top of the annular mounting cavity to seal and shield the annular storage member.

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