Automatic sampling device of inductively coupled plasma atomic emission spectrometer

Abstract

The utility model relates to the technical field of chemical detection, and discloses an automatic sampling device of an inductively coupled plasma atomic emission spectrometer, which comprises a base, the top end of the base is rotatably connected with a turntable, a fixing component is arranged in the turntable, and the top end of the base on the left side of the turntable is fixedly connected with a mounting frame. A mounting rod is rotatably connected to the top end of the mounting frame, a sample injection mechanism is arranged in the mounting rod, the sample injection mechanism comprises a mounting groove, the mounting groove is formed in the inner wall of the mounting rod, a sliding rod is slidably connected to the inner wall of the mounting groove, and a first electric telescopic rod is fixedly connected to the inner wall of the mounting groove. According to the automatic sampling device, through the arrangement of the motor I, the turntable and the sampling mechanism, the device can take out a cork in a reagent bottle before sampling and close the cork after sampling is completed, so that the opening time of the cork in the sampling process is relatively short, and the error is relatively few.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical detection, in particular to an automatic sampling device for an inductively coupled plasma atomic emission spectrometer. Background Art

[0002] ICP spectrometer, full name is inductively coupled plasma atomic emission spectrometer, it is an instrument to detect the type and content of elements in samples based on the principle of spectroscopy. It atomizes the elements in the sample by using high-temperature plasma, converts the sample into high-temperature plasma, and then uses a spectrometer to separate the light emitted by the elements in the plasma and measure its intensity, thereby determining the type and content of the elements in the sample.

[0003] At present, in the process of sampling and testing, the existing inductively coupled plasma atomic emission spectrometers often need to sample and test multiple bottles of different samples from the same batch in order to ensure that the final test results are not prone to errors.

[0004] At present, although the existing inductively coupled plasma atomic emission spectrometer can achieve the effect of automatic sampling during the sampling and detection process, some chemical reagents need to be stored in glass bottles and the tops of the bottles need to be sealed with corks. When sampling through common equipment, the staff needs to manually open the corks in advance, so it is easy for the equipment to have detection errors due to the long cork opening time during the sampling process. Therefore, an automatic sampling device for inductively coupled plasma atomic emission spectrometer is proposed to solve the above problem. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides an automatic sample injection device for an inductively coupled plasma atomic emission spectrometer, aiming to improve the problem that the prior art is inconvenient to automatically open and close the bottle stopper.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an automatic sampling device for an inductively coupled plasma atomic emission spectrometer, comprising a base, a top end of the base is rotatably connected to a turntable, a fixing component is arranged inside the turntable, a top end of the base on the left side of the turntable is fixedly connected to a mounting bracket, a top end of the mounting bracket is rotatably connected to a mounting rod, a sampling mechanism is arranged inside the mounting rod, the sampling mechanism comprises a mounting groove, the mounting groove is arranged on the inner wall of the mounting rod, a sliding rod is slidably connected to the inner wall of the mounting groove, an electric telescopic rod 1 is fixedly connected to the inner wall of the mounting groove, an output shaft of the electric telescopic rod 1 is fixedly connected to the top end of the sliding rod, a sampling needle is penetrated and fixedly connected to the inner wall of the sliding rod, a sampling tube is fixedly connected to the top end of the sampling needle, a moving block is fixedly connected to the bottom end of the sliding rod on a side away from the sampling tube, a baffle is fixedly connected to the outer wall of the mounting rod, and a grabbing component is arranged at the bottom of the moving block.

[0007] As a further description of the above technical solution:

[0008] The fixing component includes a hydraulic compartment, which is opened inside the turntable. The inner wall piston of the hydraulic compartment is connected to a slide plate. The top of the slide plate is rotatably connected to a threaded rod. The outer wall of the threaded rod passes through and is threadedly connected to the top inner wall of the turntable. The fixing component also includes a liquid bag, the interior of which is connected to the interior of the hydraulic compartment.

[0009] As a further description of the above technical solution:

[0010] A storage groove is provided at the top of the rotating disk, the liquid capsule is arranged inside the storage groove, and the outer wall of the liquid capsule is fixedly connected to the inner wall of the storage groove.

[0011] As a further description of the above technical solution:

[0012] The grabbing assembly includes a grabbing frame, an inner wall of the grabbing frame is provided with a pneumatic chamber, the inner wall piston of the pneumatic chamber is connected to a movable plate, the top of the movable plate is fixedly connected to the bottom end of the movable block, the outer wall of the movable block passes through the top inner wall of the grabbing frame, the inner wall piston of the pneumatic chamber is connected to a sliding plate, the outer wall of the sliding plate is fixedly connected to a moving bar, the end of the moving bar away from the sliding plate is fixedly connected to an airbag, and an adjustment assembly is arranged inside the grabbing frame.

[0013] As a further description of the above technical solution:

[0014] The adjustment assembly includes an installation bin, the inner wall of the installation bin is slidably connected with a connecting ring, the inner wall of the installation bin is fixedly connected with an electric telescopic rod 2, the bottom end of the electric telescopic rod 2 is fixedly connected with the top end of the connecting ring, the bottom end of the connecting ring is fixedly connected with a sleeve, the inner wall of the sleeve is slidably connected with a clamping block, the top end of the clamping block is elastically connected to the inner wall of the sleeve through a spring, and a clamping hole is opened at the upper end of the movable bar.

[0015] As a further description of the above technical solution:

[0016] The inner wall of the base is fixedly connected to motor 1, the output shaft of motor 1 passes through the inner wall of the base and is fixedly connected to the middle of the bottom end of the turntable, the inner wall of the mounting frame is fixedly connected to motor 2, and the output shaft of motor 2 is fixedly connected to the bottom end of the mounting rod.

[0017] As a further description of the above technical solution:

[0018] The initial shape of the airbag is a hemisphere, the interior of the airbag is arranged to be hollow, and the interior of the airbag is filled with gas.

[0019] As a further description of the above technical solution:

[0020] The block is in the shape of a cuboid, and a triangular prism cut corner is arranged on the lower side of one end of the block close to the slide.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, by arranging a motor 1, a turntable, an electric telescopic rod 1, a sampling tube, a moving block, a sampling needle, a grabbing frame, a moving plate of an air pressure chamber, a slide, a moving strip, an air bag, a mounting chamber, a connecting ring, a second electric telescopic rod, a sleeve, a clamping block, a spring, a clamping hole, and a baffle, the device can take out the cork in the reagent bottle before sampling and close the cork after sampling is completed, thereby ensuring that the bottle cork is opened for a short time during the sampling process, thereby ensuring that the error is less.

[0023] 2. In the utility model, the hydraulic bin, the slide plate, the threaded rod and the liquid bag are arranged to ensure that the reagent bottle in the storage tank can be well fixed, thereby ensuring that in the process of opening the cork, the device can only take out the cork, and will not take out the cork together with the reagent bottle, thereby ensuring that the device can be used normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the overall structure of the utility model;

[0025] Figure 2 It is a schematic cross-sectional view of the three-dimensional structure of the overall structure of the utility model;

[0026] Figure 3 It is a schematic diagram of the three-dimensional structure section of the grabbing frame and its internal structure in the utility model;

[0027] Figure 4 For the utility model Figure 3 A magnified schematic diagram of the three-dimensional structure of part A;

[0028] Figure 5 For the utility model Figure 4 Schematic diagram of the enlarged three-dimensional structure of part B.

[0029] Legend:

[0030] 1. Base; 2. Turntable; 3. Mounting frame; 4. Fixing assembly; 5. Storage slot; 6. Mounting rod; 7. Motor 1; 8. Motor 2; 9. Injection mechanism; 10. Adjustment assembly; 41. Hydraulic chamber; 42. Slide plate; 43. Threaded rod; 44. Liquid capsule; 91. Mounting slot; 92. Slide bar; 93. Electric telescopic rod 1; 94. Sampling tube; 95. Moving block; 96. Grabbing assembly; 97. Sampling needle; 961. Grabbing frame; 962. Air pressure chamber; 963. Moving plate; 964. Slide; 965. Moving bar; 966. Air bag; 101. Mounting chamber; 102. Connecting ring; 103. Electric telescopic rod 2; 104. Sleeve; 105. Block; 106. Spring; 107. Clamp hole; 98. Baffle. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Reference Figure 1 and Figure 2 The utility model provides an embodiment: an automatic sampling device for an inductively coupled plasma atomic emission spectrometer, comprising a base 1, a turntable 2 is rotatably connected to the top of the base 1, the turntable 2 is in the shape of a cylinder, a motor 7 is fixedly connected to the inner wall of the base 1, the output shaft of the motor 7 passes through the inner wall of the base 1 and is fixedly connected to the middle part of the bottom end of the turntable 2, and through the setting of the motor 7, the turntable 2 can be driven by the output shaft of the motor 7 to rotate.

[0033] Reference Figure 1 and Figure 2, a fixing assembly 4 is arranged inside the turntable 2, a mounting frame 3 is fixedly connected to the top of the base 1 on the left side of the turntable 2, and the mounting frame 3 is in the shape of a cylinder, the fixing assembly 4 includes a hydraulic chamber 41, the hydraulic chamber 41 is arranged inside the turntable 2, the inner wall piston of the hydraulic chamber 41 is connected to a slide plate 42, the outer wall of the slide plate 42 is fitted with the inner wall of the hydraulic chamber 41, and the top of the slide plate 42 is rotatably connected with a threaded rod 43, and the slide plate 42 is ensured to rotate relative to the threaded rod 43 by a rotating connection, so as to ensure that when the threaded rod 43 is rotated, the threaded rod 43 will not drive the slide plate 42 to rotate, and the outer wall of the threaded rod 43 passes through and is threadedly connected with the top inner wall of the turntable 2, the fixing assembly 4 also includes a liquid capsule 44, the material of the liquid capsule 44 is silicone, and the interior of the liquid capsule 44 is connected with the interior of the hydraulic chamber 41, and a storage groove 5 is arranged at the top of the turntable 2, and the number of the storage grooves 5 is set to 20, the liquid capsule 44 is arranged inside the storage groove 5, and the outer wall of the liquid capsule 44 is fixedly connected with the inner wall of the storage groove 5.

[0034] Reference Figure 1 - Figure 3 The top of the mounting frame 3 is rotatably connected with a mounting rod 6, and the mounting rod 6 is in the shape of a cylinder. The inner wall of the mounting frame 3 is fixedly connected with a motor 2 8, and the output shaft of the motor 2 8 is fixedly connected to the bottom end of the mounting rod 6. The motor 2 8 is set so that the mounting rod 6 can rotate. The mounting rod 6 is provided with an injection mechanism 9 inside, and the injection mechanism 9 includes a mounting groove 91, and the mounting groove 91 is opened on the inner wall of the mounting rod 6. The inner wall of the mounting groove 91 is slidably connected with a slide bar 92, and the sliding direction of the slide bar 92 is up and down sliding. The inner wall of the mounting groove 91 is fixedly connected with an electric telescopic rod 1 93, and the output shaft of the electric telescopic rod 1 93 is fixedly connected to the top of the slide bar 92, and the inner wall of the slide bar 92 penetrates and A sampling needle 97 is fixedly connected, and the tip of the sampling needle 97 is on the lower side. The height of the area where the sampling needle 97 is on the lower side of the slide bar 92 is higher than the height of the reagent bottle placed inside the storage tank 5. The top of the sampling needle 97 is fixedly connected to a sampling tube 94, and the end of the sampling tube 94 away from the sampling needle 97 is fixed to the suction end of the detection device. The suction end of the detection device has the function of sucking in reagents, and this technology is a prior art that can be implemented by technicians in this field, so it will not be described in detail in this case. The bottom end of the side of the slide bar 92 away from the sampling tube 94 is fixedly connected to a moving block 95, and the outer wall of the mounting rod 6 is fixedly connected to a baffle 98, and the height of the baffle 98 is consistent with the height of the reagent bottle.

[0035] Reference Figure 2 - Figure 4A grab assembly 96 is provided at the bottom of the moving block 95, and the grab assembly 96 includes a grab frame 961. The inner wall of the grab frame 961 is provided with a gas pressure chamber 962. The shape of the gas pressure chamber 962 is a shape formed by connecting a cylindrical groove and a plurality of L-shaped grooves. The inner wall piston of the gas pressure chamber 962 is connected with a moving plate 963. The outer wall of the moving plate 963 fits the inner wall of the gas pressure chamber 962, and the shape of the moving plate 963 fits the shape of the cylindrical part of the gas pressure chamber 962. The top of the moving plate 963 is fixedly connected to the bottom end of the moving block 95. The outer wall of the moving block 95 passes through the top inner wall of the grab frame 961. The inner wall piston of the gas pressure chamber 962 is connected with a slide 964. The outer wall of the slide 964 fits the L-shaped part of the gas pressure chamber 962. The inner wall of the horizontal position area of ​​the sliding piece 964 is fitted, and the outer wall of the sliding piece 964 is fixedly connected with a moving bar 965. The area of ​​the side of the moving bar 965 in contact with the sliding piece 964 is smaller than the area of ​​the side of the sliding piece 964 in contact with it. The end of the moving bar 965 away from the sliding piece 964 is fixedly connected with an airbag 966. The initial shape of the airbag 966 is a hemisphere. The initial shape setting of the airbag 966 ensures that when the airbag 966 just contacts the cork, the contact position is point-shaped, and the contact area is gradually increased as the airbag 966 slowly approaches, thereby ensuring that a vacuum area is not easily generated inside the airbag 966 during the contact between the airbag 966 and the cork. The interior of the airbag 966 is set to be hollow, and the interior of the airbag 966 is filled with gas.

[0036] Reference Figure 3 - Figure 5, an adjustment component 10 is arranged inside the grabbing frame 961, and the adjustment component 10 includes a mounting chamber 101, and a connecting ring 102 is slidably connected to the inner wall of the mounting chamber 101, and the shape of the connecting ring 102 is set to be annular, and an electric telescopic rod 2 103 is fixedly connected to the inner wall of the mounting chamber 101, and the motor 1 7, the motor 2 8, the electric telescopic rod 1 93 and the electric telescopic rod 2 103 are all connected to the controller through wires, and the controller is a programmable controller, and this technology is a prior art, which can be implemented by technicians in this field, so it will not be described in detail in this case, the bottom end of the electric telescopic rod 2 103 is fixedly connected to the top end of the connecting ring 102, and the bottom end of the connecting ring 102 is fixedly connected to the sleeve 104, and the slide 964 can be moved to the closest to the grabbing The position inside the frame 961 is on the outside of the sleeve 104, and the inner wall of the sleeve 104 is slidably connected with a block 105, which is in the shape of a rectangular parallelepiped, and a triangular prism cut corner is provided on the lower side of one end of the block 105 close to the slide 964. The setting of the cut corner ensures that the block 105 can move in the direction of entering the sleeve 104 after the cut corner is subjected to force, while the block 105 cannot move after being subjected to force in the other direction. The top of the block 105 is elastically connected to the inner wall of the sleeve 104 by a spring 106, one end of the spring 106 is fixedly connected to the top of the block 105, and the other end of the spring 106 is fixedly connected to the inner wall of the sleeve 104. A clamping hole 107 is provided at the upper end of the movable bar 965, and the width of the clamping hole 107 matches the width of the block 105.

[0037] Working principle: When in use, the staff first controls and starts the motor 7 through the program, so that the motor 7 drives the turntable 2 to rotate. When the turntable 2 rotates to the left end position where the required reagent bottle is required, the staff starts the electric telescopic rod 1 93 and the electric telescopic rod 2 103, so that the electric telescopic rod 1 93 drives the slide bar 92 to move downward when the connecting ring 102 is at the lowest end of the cylindrical area of ​​the installation bin 101.

[0038] When the slide bar 92 moves downward to the bottom end of the grabbing frame 961 and contacts the upper surface of the baffle 98, when the slide bar 92 continues to move downward, the moving block 95 moves downward relative to the grabbing frame 961, so that the moving block 95 pushes the moving plate 963 to move downward, thereby increasing the air pressure inside the air pressure chamber 962, so that the slide 964 drives the moving bar 965 to move toward the direction close to the cork under the action of the air pressure, and after moving to a closer position, the deformation of the air bag 966 ensures that the air bag 966 fits the outer wall of the cork.

[0039] Since the connecting ring 102 is at the bottom of the installation bin 101 at this time, the clamping block 105 and the clamping hole 107 are at the same horizontal position at this time. Therefore, during the movement of the moving bar 965, the moving bar 965 pushes the inclined surface of the clamping block 105. When the moving bar 965 stops moving, the clamping block 105 enters the interior of the clamping hole 107 which is expected to be at the same vertical position under the elastic force of the spring 106.

[0040] Therefore, at this time, after the staff drives the moving block 95 to move upward through the electric telescopic rod 93, since the moving bar 965 cannot move, the moving bar 965 can be moved upward while maintaining the clamping state of the cork, so the effect of taking out the cork can be achieved.

[0041] After taking out the cork, the staff starts the motor 2 8, so that the motor 2 8 drives the mounting rod 6 to rotate half a circle, and then starts the electric telescopic rod 1 93 to stretch it, so that the sampling needle 97 moves downward to enter the reagent bottle and inhales the reagent through the suction end of the detection equipment connected to the sampling tube 94.

[0042] When sampling is completed, the staff first drives the slide bar 92 and the sampling needle 97 upwards through the electric telescopic rod 1 93. When the sampling needle 97 leaves the reagent bottle, the staff starts the motor 2 8 again, so that the motor 2 8 drives the mounting rod 6 to rotate half a circle in the opposite direction.

[0043] After the mounting rod 6 rotates and resets, the staff first starts the electric telescopic rod 1 93, so that the sliding rod 92 drives the grabbing frame 961 and the cork to move downward, and then starts the electric telescopic rod 2 103, so that the electric telescopic rod 2 103 drives the connecting ring 102 to move upward, so that the clamping block 105 leaves the horizontal area where the clamping hole 107 is located. At this time, when the staff starts the electric telescopic rod 1 93 again, due to the gravity of the grabbing frame 961, the moving block 95 moves upward in the process of moving upward, first until the moving plate 963 contacts the top inner wall of the air pressure chamber 962, and then drives the grabbing frame 961 to move upward. Due to the upward movement of the moving plate 963, the air pressure inside the air pressure chamber 962 is reduced, so the sliding piece 964 and the moving bar 965 first move in the direction away from the cork and then move upward with the grabbing frame 961.

[0044] After completing the sampling operation for a bottle of reagent, the staff can repeat the above operation to sample different reagents.

[0045] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic sampling device for an inductively coupled plasma atomic emission spectrometer, comprising a base (1), characterized in that: The top of the base (1) is rotatably connected to a turntable (2), a fixing assembly (4) is arranged inside the turntable (2), the top of the base (1) on the left side of the turntable (2) is fixedly connected to a mounting frame (3), the top of the mounting frame (3) is rotatably connected to a mounting rod (6), an injection mechanism (9) is arranged inside the mounting rod (6), the injection mechanism (9) comprises a mounting groove (91), the mounting groove (91) is formed on the inner wall of the mounting rod (6), a sliding rod (92) is slidably connected to the inner wall of the mounting groove (91), and the mounting groove The inner wall of (91) is fixedly connected to an electric telescopic rod (93), the output shaft of the electric telescopic rod (93) is fixedly connected to the top of the sliding rod (92), the inner wall of the sliding rod (92) is penetrated by and fixedly connected to a sampling needle (97), the top of the sampling needle (97) is fixedly connected to a sampling tube (94), the bottom end of the sliding rod (92) away from the sampling tube (94) is fixedly connected to a moving block (95), the outer wall of the mounting rod (6) is fixedly connected to a baffle (98), and a grabbing assembly (96) is provided at the bottom of the moving block (95).

2. The automatic sample introduction device for inductively coupled plasma atomic emission spectrometer according to claim 1, characterized in that: The fixing assembly (4) comprises a hydraulic chamber (41), wherein the hydraulic chamber (41) is disposed inside the rotating disk (2), wherein an inner wall piston of the hydraulic chamber (41) is connected to a slide plate (42), wherein a top end of the slide plate (42) is rotatably connected to a threaded rod (43), wherein an outer wall of the threaded rod (43) penetrates through and is threadedly connected to an inner wall of a top of the rotating disk (2), and wherein the fixing assembly (4) further comprises a liquid capsule (44), wherein the interior of the liquid capsule (44) is in communication with the interior of the hydraulic chamber (41).

3. The automatic sampling device for inductively coupled plasma atomic emission spectrometer according to claim 2, characterized in that: A storage groove (5) is provided at the top of the rotating disk (2), the liquid capsule (44) is arranged inside the storage groove (5), and the outer wall of the liquid capsule (44) is fixedly connected to the inner wall of the storage groove (5).

4. The automatic sample introduction device for inductively coupled plasma atomic emission spectrometer according to claim 1, characterized in that: The grabbing assembly (96) comprises a grabbing frame (961), the inner wall of the grabbing frame (961) is provided with a pneumatic chamber (962), the inner wall piston of the pneumatic chamber (962) is connected to a moving plate (963), the top end of the moving plate (963) is fixedly connected to the bottom end of a moving block (95), the outer wall of the moving block (95) passes through the top inner wall of the grabbing frame (961), the inner wall piston of the pneumatic chamber (962) is connected to a sliding plate (964), the outer wall of the sliding plate (964) is fixedly connected to a moving bar (965), and the end of the moving bar (965) away from the sliding plate (964) is fixedly connected to an air bag (966), and an adjustment assembly (10) is arranged inside the grabbing frame (961).

5. The automatic sample introduction device for inductively coupled plasma atomic emission spectrometer according to claim 4, characterized in that: The adjustment assembly (10) comprises a mounting chamber (101), the inner wall of the mounting chamber (101) being slidably connected to a connecting ring (102), the inner wall of the mounting chamber (101) being fixedly connected to a second electric telescopic rod (103), the bottom end of the second electric telescopic rod (103) being fixedly connected to the top end of the connecting ring (102), the bottom end of the connecting ring (102) being fixedly connected to a sleeve (104), the inner wall of the sleeve (104) being slidably connected to a clamping block (105), the top end of the clamping block (105) being elastically connected to the inner wall of the sleeve (104) via a spring (106), and a clamping hole (107) being provided at the upper end of the movable bar (965).

6. The automatic sample introduction device for inductively coupled plasma atomic emission spectrometer according to claim 1, characterized in that: The inner wall of the base (1) is fixedly connected to a motor 1 (7), the output shaft of the motor 1 (7) passes through the inner wall of the base (1) and is fixedly connected to the middle of the bottom end of the turntable (2), and the inner wall of the mounting frame (3) is fixedly connected to a motor 2 (8), the output shaft of the motor 2 (8) is fixedly connected to the bottom end of the mounting rod (6).

7. The automatic sample introduction device for inductively coupled plasma atomic emission spectrometer according to claim 4, characterized in that: The initial shape of the airbag (966) is a hemisphere, the interior of the airbag (966) is configured to be hollow, and the interior of the airbag (966) is filled with gas.

8. The automatic sample introduction device for inductively coupled plasma atomic emission spectrometer according to claim 5, characterized in that: The clamping block (105) is in the shape of a cuboid, and a triangular prism-shaped cut corner is provided on the lower side of one end of the clamping block (105) close to the slide (964).

Images