CN214066917U

CN214066917U - Atomic absorption graphite furnace

Info

Publication number: CN214066917U
Application number: CN202023139332.8U
Authority: CN
Inventors: 刘洪艳
Original assignee: Mcc First Bureau Environmental Technology Co ltd
Current assignee: Mcc First Bureau Environmental Technology Co ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-08-27
Anticipated expiration: 2030-12-23

Abstract

The application relates to an atomic absorption graphite furnace, it includes the workstation, is equipped with the detection case on the workstation, is equipped with graphite pipe, its characterized in that along the horizontal direction in the detection case: the upper sides of the two end parts of the graphite tube are connected with two upper sleeves which move along the horizontal direction in a sliding manner, and the lower sides of the two end parts of the graphite tube are connected with two lower sleeves which are arranged in the detection box and rotate. Make upper casing, lower casing and graphite pipe separation through removing upper casing and lower casing, realize the dismantlement of graphite pipe and change the function, make atomic absorption spectroscopy analysis graphite stove can change the graphite pipe fast reliably, this application has the effect that improves the measurement and analysis efficiency of graphite stove.

Description

Atomic absorption graphite furnace

Technical Field

The application relates to the field of chemical detection instruments, in particular to an atomic absorption graphite furnace.

Background

A graphite furnace atomic absorption spectrophotometer is an instrument for measurement.

The current chinese patent with publication number CN103412583A discloses a graphite furnace atomic absorption spectrophotometer, include the photometer and fix the diaphragm on the photometer, two sleeves of round hole fixedly connected with are passed through to the upper end of diaphragm, two intraductal equal fixedly connected with filter plate of sleeve, filter plate's center department has cup jointed the pivot through the through-hole slip, fixedly connected with flabellum on the pole wall of pivot, the lower extreme of pivot passes through-hole and fixedly connected with scrubbing brush, and scrubbing brush and filter plate's lower extreme contact are connected, fixedly connected with dead lever in the sleeve pipe, the upper end fixedly connected with motor of dead lever, the output of motor run through the pole wall of dead lever and with the upper end fixed connection of pivot.

Aiming at the related technologies, the inventor finds that in the use process of the graphite furnace, when the graphite sleeve is repeatedly used and burnt, the graphite sleeve needs to be replaced in time to ensure the measurement effect, however, the replacement of the graphite sleeve is inconvenient, so that the use and analysis efficiency of an instrument is reduced, and the defect of low replacement efficiency of the graphite sleeve exists in the use process of the graphite furnace.

SUMMERY OF THE UTILITY MODEL

In order to make atomic absorption spectroscopy analysis graphite oven can change the graphite cover fast and reliably, this application provides an atomic absorption graphite oven.

The application provides an atomic absorption graphite furnace adopts following technical scheme:

the utility model provides an atomic absorption graphite stove, includes the workstation, is equipped with the detection case on the workstation, is equipped with graphite pipe, its characterized in that along the horizontal direction in the detection case: the upper sides of the two end parts of the graphite tube are connected with two upper sleeves which move along the horizontal direction in a sliding manner, and the lower sides of the two end parts of the graphite tube are connected with two lower sleeves which are arranged in the detection box and rotate.

Through adopting above-mentioned technical scheme, the workstation supports the detection case, the detection case is measured the sample that awaits measuring, the graphite pipe makes the sample vaporization that awaits measuring, be convenient for measure, go up the sleeve pipe and together support the graphite pipe in the detection case with the lower casing, the graphite pipe of being convenient for processes the sample, it makes the upper casing through removing upper casing and lower casing, the lower casing separates with the graphite pipe, realize the dismantlement change function of graphite pipe, make atomic absorption spectroscopy graphite stove can change the graphite pipe fast and reliably, improve the measurement and analysis efficiency of graphite stove.

It is optional, the lower terminal surface of detection case has set firmly the aversion cylinder along vertical direction, the lower terminal surface of lower sleeve pipe is equipped with the dwang, the upper end of dwang sets up along vertical direction, the lower tip of dwang is to the direction slope near the aversion cylinder, the horizontal direction has set firmly the shifting board on the output shaft of aversion cylinder, the sliding tray has been seted up along its length direction to the lower tip of dwang, the both ends of shifting board are equipped with the sliding block, when the aversion cylinder output shaft is flexible, the sliding block moves along the sliding tray direction, distance between two dwang upper ends is greater than the length of shifting board, the bracing piece has set firmly along the horizontal direction in the detection case, the bracing piece both ends are rotated with the upper end of dwang and are connected.

Through adopting above-mentioned technical scheme, the aversion cylinder provides power for the removal of lower casing pipe, and the aversion cylinder makes the shifting board go up and down, and shifting board and dwang relative position change, sliding block move along the sliding tray direction and drive the dwang and rotate, and the bracing piece makes the rotation process of dwang firm inadequately squint more, and the dwang then drives the lower casing pipe and rotates, realizes that the lower casing pipe puts the function to the automatic clamp of graphite pipe, makes the dismantlement change process of graphite pipe more simple and convenient.

Optionally, the sliding block is the cylinder shape, and the sliding block sets up along the horizontal direction, and the sliding block rotates with the shifting board to be connected, sliding block and sliding tray roll to be connected.

Through adopting above-mentioned technical scheme, when the shifting board removed, the sliding block was arranged in the sliding tray and is rolled, and the sliding block of cylinder shape reduces the friction between sliding block and the sliding tray, makes the moving process of sliding block more smooth and easy.

Optionally, the detection case is internally and fixedly provided with limiting plates along the vertical direction, and the shifting plate is arranged between the limiting plates and is in sliding connection with the limiting plates.

Through adopting above-mentioned technical scheme, the limiting plate makes the removal orbit of shifting board more stable, makes the shifting board drive the dwang better and rotate.

Optionally, the upper end of dwang has set firmly the extrusion piece, and the extrusion groove has been seted up along the bracing piece direction to the lower terminal surface of lower casing pipe, and extrusion piece and extrusion groove sliding connection, extrusion groove are close to the one end of aversion cylinder and are set firmly the extrusion spring between the extrusion piece.

By adopting the technical scheme, when the lower sleeve is connected with the graphite tube, the extrusion block is arranged in the extrusion groove to slide by compressing the extrusion spring, so that the lower sleeve can better fix the graphite tube on a required position.

Optionally, the width of the end, away from the rotating rod, of the extrusion block is greater than the width of the end, close to the rotating rod, of the extrusion block.

Through adopting above-mentioned technical scheme, the one end of broad will extrude the piece joint in the extrusion inslot, has avoided extrusion piece to a certain extent to drop from the extrusion inslot at the rotation in-process.

Optionally, a shifting rack is fixedly arranged on the upper sleeve along the horizontal direction, a shifting motor is fixedly arranged in the detection box, and a shifting gear which is meshed with the two shifting racks and is simultaneously and fixedly arranged on an output shaft of the shifting motor.

By adopting the technical scheme, the shifting motor provides power for shifting of the upper sleeve, the shifting motor drives the shifting gear to rotate, the shifting gear rotates to drive the shifting rack to move, the shifting rack further drives the upper sleeve to move in the horizontal direction, and the function of clamping and placing the graphite tube by the upper sleeve is realized.

Optionally, a limit cover is fixedly arranged in the detection box, and the end part of the displacement rack close to the displacement gear is arranged in the limit cover and is in sliding connection with the limit cover.

By adopting the technical scheme, the limiting cover limits the moving track of the shifting rack, so that the shifting rack is better placed in the horizontal direction to move, and relative deviation is not easy to occur.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the detection box is supported by the workbench, the detection box measures a sample to be detected, the graphite tube enables the sample to be detected to be vaporized, the measurement is convenient, the upper sleeve and the lower sleeve support the graphite tube in the detection box together, the sample is convenient to process by the graphite tube, the upper sleeve, the lower sleeve and the graphite tube are separated by moving the upper sleeve and the lower sleeve, the disassembly and replacement functions of the graphite tube are realized, the graphite tube can be replaced quickly and reliably by the atomic absorption spectrometry graphite furnace, and the measurement and analysis efficiency of the graphite furnace is improved;

2. the shifting cylinder provides power for the movement of the lower sleeve, the shifting cylinder enables the shifting plate to lift, the relative position of the shifting plate and the rotating rod is changed, the sliding block moves along the direction of the sliding groove to drive the rotating rod to rotate, the rotating process of the rotating rod is more stable and is not prone to offset due to the supporting rod, and the rotating rod further drives the lower sleeve to rotate, so that the automatic clamping function of the lower sleeve on the graphite tube is realized, and the dismounting and replacing process of the graphite tube is simpler and more convenient;

3. the shifting motor provides power for shifting of the upper sleeve, the shifting motor drives the shifting gear to rotate, the shifting gear rotates to drive the shifting rack to move, the shifting rack further drives the upper sleeve to move in the horizontal direction, and the function of clamping and placing the graphite tube by the upper sleeve is achieved.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present application.

Fig. 2 is a schematic structural diagram of an upper casing and a lower casing in the embodiment of the present application.

Fig. 3 is a sectional view of a shift rack and a shift gear in an embodiment of the present application.

Fig. 4 is a sectional view of the rotating lever and the pressing spring in the embodiment of the present application.

Fig. 5 is a sectional view of the shift cylinder and the support rod in the embodiment of the present application.

Description of reference numerals: 1. a work table; 2. a detection box; 3. a graphite tube; 4. sleeving a sleeve; 5. setting a sleeve; 6. a revolving door; 7. a feed pipe; 8. an upper cooling pipe; 9. a lower cooling tube; 10. a displacement cylinder; 11. rotating the rod; 12. a shifting plate; 13. a sliding groove; 14. a slider; 15. a support bar; 16. a limiting plate; 17. extruding the block; 18. extruding a groove; 19. a compression spring; 20. a shifting rack; 21. a displacement motor; 22. a limiting cover; 23. the gear is displaced.

Detailed Description

The present application is described in further detail below with reference to the accompanying drawings.

The embodiment of the application discloses atomic absorption graphite stove, refer to fig. 1 and 2, including workstation 1 along the horizontal direction setting, be equipped with the detection case 2 that is used for analyzing sample composition on workstation 1, above-mentioned detection case 2 is prior art, and the detail is not repeated here, is equipped with graphite pipe 3 along the horizontal direction in the detection case 2, and graphite pipe 3 is hollow cylinder shape. The workbench 1 supports the detection box 2, a product to be detected is placed in the graphite tube 3 by a user, the graphite tube 3 generates heat to vaporize a sample to be detected, and the detection box 2 measures the sample to be detected to realize the basic measurement function of the graphite furnace.

Referring to fig. 1 and 2, a rotary door 6 is rotatably connected to the detection box 2. When the detection box 2 works, the revolving door 6 is closed, and the overflow of heat in the detection box 2 is reduced to a certain extent.

Referring to fig. 1 and 2, the inlet pipe 7 has set firmly along vertical direction on the detection case 2, and the upper end of inlet pipe 7 is the drum shape, and the lower tip of inlet pipe 7 is the conical shape that the diameter diminishes gradually, and graphite pipe 3 is run through and is arranged in graphite pipe 3 to the bottom of inlet pipe 7. Wait to detect in sample gets into graphite pipe 3 through inlet pipe 7, inlet pipe 7 makes the feeding function of detection case 2 more perfect.

Referring to fig. 1 and 2, the upper side of two ends of the graphite tube 3 is connected with two identical upper sleeves 4 moving along the horizontal direction in a sliding manner, the upper sleeves 4 are square in shape, a semi-cylindrical cavity is arranged in the upper sleeves 4 along the horizontal direction, the cavity is matched with the outer wall of the graphite tube 3, and the graphite tube 3 is connected with the cavity in a sliding manner. When the work of detection case 2, go up sleeve pipe 4 and with 3 centre gripping of graphite pipe in detection case 2, the graphite pipe 3 of being convenient for is processed the sample, and when trading graphite pipe 3, two go up sleeve pipe 4 and all slide to the direction of keeping away from graphite pipe 3, and sleeve pipe 4 and graphite pipe 3 separation are gone up to the messenger through removing sleeve pipe 4, and then realize the dismantlement change function of graphite pipe 3.

Referring to fig. 1 and 2, an upper cooling pipe 8 is fixedly connected to the end surface of the upper sleeve 4 far away from the graphite tube 3, and the upper cooling pipe 8 is made of a bendable material. The upper cooling pipe 8 conveys the cooling liquid into the upper sleeve 4, so that the temperature of the upper sleeve 4 is reduced, and the possibility that the upper sleeve 4 is scalded due to the higher temperature of the graphite pipe 3 is reduced to a certain extent.

Referring to fig. 2 and 3, the upper casing 4 is fixedly provided with two shifting racks 20 along the horizontal direction, the toothed sides of the two shifting racks 20 are opposite and parallel to each other, and a shifting gear 23 engaged with the two shifting racks 20 is rotatably arranged in the detection box 2 along the vertical direction. When the upper sleeve 4 moves, the shifting gear 23 rotates to drive the shifting rack 20 to move, and the shifting rack 20 further drives the upper sleeve 4 to move in the horizontal direction, so that the function of clamping and placing the graphite tube 3 by the upper sleeve 4 is realized.

Referring to fig. 2 and 3, a displacement motor 21 is fixedly arranged in the detection box 2 along the horizontal direction, and an output shaft of the displacement motor 21 is coaxially and fixedly connected with a displacement gear 23. When the upper sleeve 4 moves, the shifting motor 21 provides power for shifting the upper sleeve 4, and the shifting motor 21 rotates to drive the shifting gear 23 to rotate, so that the automatic shifting function of the upper sleeve 4 is realized.

Referring to fig. 2 and 3, the lower end face of the detection box 2 is fixedly provided with a limiting cover 22 along the vertical direction, a guide groove is formed in the limiting cover 22 along the horizontal direction, and the end part of the shifting rack 20 close to the shifting gear 23 is arranged in the guide groove and is in sliding connection with the guide groove. When the shifting gear 23 and the shifting rack 20 move relatively, the limit cover 22 makes the meshing relationship between the shifting gear 23 and the shifting rack 20 more stable, and the guide groove limits the moving track of the shifting rack 20, so that the shifting rack 20 can be better placed in the horizontal direction to move, and relative deviation is not easy to occur.

Referring to fig. 2 and 4, two lower sleeves 5, which are placed in the detection box 2 and rotate, are slidably connected to the lower sides of the two ends of the graphite tube 3, and have the same shape as the upper sleeve 4. Lower casing 5 supports graphite pipe 3 from graphite pipe 3 below, and lower casing 5 together supports graphite pipe 3 with last sleeve pipe 4 in detection case 2, and the graphite pipe 3 of being convenient for is processed the sample, makes lower casing 5 and graphite pipe 3 separation through rotating lower casing 5, realizes the dismantlement change function of graphite pipe 3.

Referring to fig. 2 and 4, a lower cooling pipe 9 is fixedly connected to the end surface of the lower sleeve 5 far away from the graphite pipe 3, and the lower cooling pipe 9 is made of a bendable material. The lower cooling pipe 9 conveys the cooling liquid into the lower sleeve 5, so that the temperature of the lower sleeve 5 is reduced, and the possibility that the lower sleeve 5 is scalded due to the higher temperature of the graphite pipe 3 is reduced to a certain extent.

Referring to fig. 2 and 4, the lower end surface of the lower sleeve 5 is provided with a rotating rod 11, the upper end of the rotating rod 11 is arranged along the vertical direction, and the lower end of the rotating rod 11 is inclined towards the direction close to the central line of the graphite tube 3. When the lower sleeve 5 is moved, the rotating rod 11 is rotated by changing the position of the lower end portion of the rotating rod 11, and the rotating rod 11 drives the lower sleeve 5 to rotate.

Referring to fig. 2 and 4, an extrusion block 17 is fixedly arranged at the upper end of the rotating rod 11 along the vertical direction, an extrusion groove 18 is formed in the lower end surface of the lower sleeve 5 along the axis direction of the graphite tube 3, the extrusion block 17 is slidably connected with the extrusion groove 18, and an extrusion spring 19 is fixedly arranged between one end of the extrusion groove 18 close to the shift cylinder 10 and the extrusion block 17 along the horizontal direction. When changing graphite pipe 3, place graphite pipe 3 on required position earlier, rotate dwang 11 this moment and make lower sleeve pipe 5 rotate and be close to graphite pipe 3, when lower sleeve pipe 5 is connected with graphite pipe 3, lower sleeve pipe 5 extrudees each other with graphite pipe 3, graphite pipe 3 compression extrusion spring 19 makes extrusion piece 17 arrange extrusion groove 18 in and slide, move to required position on lower sleeve pipe 5, extrusion spring 19 makes lower sleeve pipe 5 fix graphite pipe 3 on required position better.

Referring to fig. 2 and 4, the width of the end of the pressing block 17 away from the rotating rod 11 is greater than the width of the end of the pressing block 17 close to the rotating rod 11, and a certain amount of rotating space is left in the pressing groove 18 for the pressing block 17 to move. When the rotating rod 11 rotates, the wider end of the extrusion block 17 clamps the extrusion block 17 in the extrusion groove 18, and the extrusion block 17 is prevented from falling from the extrusion groove 18 in the rotating process to a certain extent.

Referring to fig. 2 and 4, a support rod 15 is fixedly arranged in the detection box 2 along the horizontal direction, and two ends of the support rod 15 are rotatably connected with the upper end of the rotating rod 11. When dwang 11 rotates, dwang 11 rotates along dwang 11 and bracing piece 15 junction, and bracing piece 15 makes the rotation process of dwang 11 firm inadequately squint more.

Referring to fig. 2 and 4, a displacement plate 12 moving in the vertical direction is arranged in the detection box 2 along the horizontal direction, a sliding groove 13 is formed in the lower end portion of the rotating rod 11 along the length direction of the rotating rod, sliding blocks 14 are arranged at two ends of the displacement plate 12, the sliding blocks 14 move along the direction of the sliding groove 13, and the distance between the upper end portions of the two rotating rods 11 is greater than the length of the displacement plate 12. When changing graphite pipe 3, shift board 12 goes up and down to make shift board 12 and dwang 11 relative position change, and sliding block 14 moves along sliding tray 13 direction and drives the lower tip removal of dwang 11 this moment, makes dwang 11 rotate, and dwang 11 and then drive lower sleeve 5 and rotate, realizes that lower sleeve 5 puts the function to the clamp of graphite pipe 3.

Referring to fig. 2 and 4, sliding block 14 is cylindrical, sliding block 14 is disposed in a horizontal direction, sliding block 14 is rotatably connected to displacement plate 12, and sliding block 14 is rotatably connected to sliding groove 13. When the shifting plate 12 moves, the sliding block 14 is placed in the sliding groove 13 to roll, and the sliding block 14 in the cylindrical shape reduces friction between the sliding block 14 and the sliding groove 13, so that the moving process of the sliding block 14 is smoother.

Referring to fig. 2 and 5, a shifting cylinder 10 is fixedly arranged on the lower end surface of the detection box 2 along the vertical direction, the shifting cylinder 10 is arranged on the center line of the graphite tube 3, and an output shaft of the shifting cylinder 10 is fixedly connected with the middle part of the lower end of the shifting plate 12. The shifting cylinder 10 provides power for the movement of the lower sleeve 5, the output shaft of the shifting cylinder 10 stretches and retracts to drive the shifting plate 12 to ascend and descend, the shifting plate 12 further drives the rotating rod 11 to rotate, and the automatic rotating function of the rotating rod 11 is achieved.

Referring to fig. 2 and 4, rectangular limiting plates 16 are fixedly arranged in the detection box 2 along the vertical direction, the support rod 15 is fixedly connected with the upper end portions of the limiting plates 16, and the shifting plate 12 is arranged between the limiting plates 16 and is in sliding connection with the limiting plates 16. The limiting plate 16 fixes the supporting rod 15 at a desired position, and when the shifting plate 12 moves up and down, the limiting plate 16 makes the moving track of the shifting plate 12 more stable, so that the shifting plate 12 drives the rotating rod 11 to rotate better.

The implementation principle of the atomic absorption graphite furnace in the embodiment of the application is as follows: when the graphite tube 3 needs to be disassembled and replaced, the shifting motor 21 rotates to drive the shifting gear 23 to rotate, the shifting gear 23 rotates to drive the shifting rack 20 to move, the shifting rack 20 further drives the upper sleeve 4 to move in the horizontal direction, and the upper sleeve 4 is separated from the graphite tube 3; the output shaft of the shifting cylinder 10 rises to enable the shifting plate 12 to rise, the relative position of the shifting plate 12 and the rotating rod 11 is changed, the sliding block 14 moves along the direction of the sliding groove 13 to drive the rotating rod 11 to rotate, the rotating rod 11 further drives the lower sleeve 5 to rotate, the upper sleeve 4 is separated from the graphite tube 3, a user can take the graphite tube 3 down from the detection box 2, and the graphite tube 3 can be conveniently detached and replaced.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an atomic absorption graphite furnace, includes workstation (1), is equipped with on workstation (1) and detects case (2), is equipped with graphite pipe (3), its characterized in that along the horizontal direction in detecting case (2): the upper sides of the two end parts of the graphite tube (3) are connected with two upper sleeves (4) moving along the horizontal direction in a sliding manner, and the lower sides of the two end parts of the graphite tube (3) are connected with two lower sleeves (5) which are arranged in the detection box (2) for rotating.

2. The atomic absorption graphite furnace according to claim 1, wherein: the lower end face of the detection box (2) is fixedly provided with a shift cylinder (10) along the vertical direction, the lower end face of the lower sleeve (5) is provided with a rotating rod (11), the upper end part of the rotating rod (11) is arranged along the vertical direction, the lower end part of the rotating rod (11) inclines towards the direction close to the shift cylinder (10), the output shaft of the shift cylinder (10) is fixedly provided with a shift plate (12) along the horizontal direction, the lower end part of the rotating rod (11) is provided with a sliding groove (13) along the length direction thereof, and the two ends of the shift plate (12) are provided with sliding blocks (14), when the output shaft of the shifting cylinder (10) stretches, the sliding block (14) moves along the direction of the sliding groove (13), the distance between the upper end parts of the two rotating rods (11) is greater than the length of the shifting plate (12), the supporting rod (15) is fixedly arranged in the detection box (2) along the horizontal direction, and the two ends of the supporting rod (15) are rotatably connected with the upper end parts of the rotating rods (11).

3. The atomic absorption graphite furnace according to claim 2, wherein: sliding block (14) are the cylinder shape, and sliding block (14) set up along the horizontal direction, and sliding block (14) and shifting board (12) rotate to be connected, and sliding block (14) and sliding tray (13) roll connection.

4. The atomic absorption graphite furnace according to claim 2, wherein: limiting plates (16) are fixedly arranged in the detection box (2) along the vertical direction, and the shifting plate (12) is arranged between the limiting plates (16) and is in sliding connection with the limiting plates (16).

5. The atomic absorption graphite furnace according to claim 2, wherein: the upper end of dwang (11) has set firmly extrusion piece (17), and extrusion groove (18) have been seted up along bracing piece (15) direction to the lower terminal surface of lower sleeve pipe (5), and extrusion piece (17) and extrusion groove (18) sliding connection, extrusion spring (19) have set firmly between one end that extrusion groove (18) are close to aversion cylinder (10) and extrusion piece (17).

6. The atomic absorption graphite furnace of claim 5, wherein: the width of one end, far away from the rotating rod (11), of the extrusion block (17) is larger than the width of one end, close to the rotating rod (11), of the extrusion block (17).

7. The atomic absorption graphite furnace according to claim 1, wherein: a shifting rack (20) is fixedly arranged on the upper sleeve (4) along the horizontal direction, a shifting motor (21) is fixedly arranged in the detection box (2), and a shifting gear which is meshed and connected with the two shifting racks (20) is coaxially and fixedly arranged on an output shaft of the shifting motor (21).

8. The atomic absorption graphite furnace according to claim 7, wherein: a limiting cover (22) is fixedly arranged in the detection box (2), and the end part of the displacement rack (20) close to the displacement gear is arranged in the limiting cover (22) and is in sliding connection with the limiting cover (22).