CN214539230U - Visual monitoring device for atomic absorption spectrophotometer - Google Patents
Visual monitoring device for atomic absorption spectrophotometer Download PDFInfo
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- CN214539230U CN214539230U CN202022920705.9U CN202022920705U CN214539230U CN 214539230 U CN214539230 U CN 214539230U CN 202022920705 U CN202022920705 U CN 202022920705U CN 214539230 U CN214539230 U CN 214539230U
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Abstract
The utility model provides a visual monitoring device for atomic absorption spectrophotometer, which consists of a reflecting mechanism, a receiving mechanism and a position adjusting mechanism, wherein the reflecting mechanism is provided with a prism arranged on a bottom plate, and the prism can reflect light beams to the receiving mechanism; the receiving mechanism is provided with a lens structure arranged on the bottom plate and an endoscope arranged in the light-emitting center direction of the lens structure; the bottom plate can only move along the axial direction parallel to the lens frame shaft, the position adjusting mechanism comprises a fixed block and an adjusting nail, the fixed block is provided with a U-shaped opening and is fixed on the optical platform, the adjusting nail is clamped in the U-shaped opening of the fixed block and can only rotate, one end of the adjusting nail is a screw head, and the other end of the adjusting nail is provided with a thread and is screwed into a threaded hole at the end part of the bottom plate along the axial direction parallel to the lens frame shaft. Because the endoscope arranges in the light-emitting central direction of lens structure, the utility model discloses can clearly accurate judgement advance the appearance state, the utility model discloses can also conveniently adjust reflection mechanism, receiving mechanism's position, reach the best position of surveing fast.
Description
Technical Field
The utility model relates to an atomic absorption spectrophotometer, in particular to a visual monitoring devices for atomic absorption spectrophotometer.
Background
In the field of analytical chemistry, atomic absorption spectrophotometers have been widely used in the metallurgical industry, food safety, environmental monitoring, and the like, and are extremely important spectroscopic analyzers. Atomic absorption spectrometry is a method for quantitatively analyzing the absorption degree of ground state atomic characteristic radiation of a detected element, but the detection precision can be directly influenced by the specification of sample injection operation, and the internal condition can not be observed by naked eyes of people during sample injection, so a special visual device needs to be arranged on an instrument, and an operator can perform standard and accurate sample injection. Meanwhile, the visual system can better help a user to position the sampling needle, observe the state of the sample in the graphite tube, optimize the temperature program of the graphite furnace and the like, and visual operation provides an effective training scheme for education training. The existing visual monitoring device is composed of a mechanical structure and a camera and is widely used for realizing the visual function of an internal module of an instrument.
However, in order to avoid affecting the optical path, the installation position of the camera in the existing visual system is not in the center of the optical path, and the camera is generally arranged on the side surface of the optical path at a certain angle, and the internal condition of the graphite tube can only be observed from the side surface, so that the sampling state cannot be clearly and accurately judged due to the fact that the graphite tube is not observed from the front surface. Moreover, the offset angle and the accuracy thereof are high during installation and debugging of the device, which results in difficult installation and easy change of the angle in the later period. Some visual systems can install the camera beside the graphite furnace, expose in work area, very easily produce when the user operation and collide with, lead to mounted position and angle change and can't accurately see the inside condition of graphite furnace.
Therefore, a position-adjustable visual monitoring device needs to be designed, and the internal condition of the graphite furnace during sample injection operation can be observed at the front side of the center of the light path.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a visual monitoring devices for atomic absorption spectrophotometer can conveniently observe the position and the degree of depth that the automatic sample injector capillary advances the needle and gets into the graphite pipe, monitors the inside dry of graphite pipe, ashing, burns the dynamic evolution of incomplete in-process appearance liquid directly perceivedly, ensures the life-span of analytical precision and graphite pipe.
The utility model discloses a secondary purpose can realize hiding the light path after advancing the appearance and accomplish, does not influence the instrument and normally operates.
In order to achieve the above object, the utility model adopts the following technical scheme:
a visual monitoring device for atomic absorption spectrophotometer which characterized in that: by reflecting mechanism, receiving mechanism and position control mechanism constitute, wherein:
the reflecting mechanism is provided with a prism which is arranged on the bottom plate and can reflect the light beam to the receiving mechanism;
the receiving mechanism is provided with a lens structure arranged on the bottom plate and an endoscope arranged in the light-emitting center direction of the lens structure;
the base plate is mounted on the optical platform and is constrained to move only in an axial direction parallel to the lens holder axis, and the position adjustment mechanism is capable of driving the base plate to move in an axial direction parallel to the lens holder axis.
The visual monitoring device for atomic absorption spectrophotometer, wherein: the position adjusting mechanism comprises a fixed block and an adjusting nail, the fixed block is provided with a U-shaped opening and is fixed on the optical platform, the adjusting nail is clamped in the U-shaped opening of the fixed block and can only rotate, one end of the adjusting nail is a screw head, and the other end of the adjusting nail is provided with a thread and is screwed into a threaded hole in the end part of the bottom plate along the axial direction parallel to the lens frame shaft.
The visual monitoring device for atomic absorption spectrophotometer, wherein: the adjusting nail is clamped in the U-shaped opening of the fixing block through the shaft part of the reducing diameter.
The visual monitoring device for atomic absorption spectrophotometer, wherein: the bottom plate is provided with at least two slotted holes, and the bottom plate is connected to the optical platform by virtue of positioning nails penetrating through the slotted holes.
The visual monitoring device for atomic absorption spectrophotometer, wherein: the bottom plate and the optical platform can be relatively fixed through screws.
The visual monitoring device for atomic absorption spectrophotometer, wherein: the reflecting mechanism further comprises a motor, a rotary table, a prism support, a motor base and a spring piece, the motor is fixed on the motor base, the motor base is fixed on the bottom plate, a shaft of the motor penetrates through a hole in the upper end of the motor base and is fixedly connected with the rotary table through the spring piece, the spring piece is elastically abutted between the motor base and the rotary table to form damping force, the prism is bonded on the prism support, and the prism support is fixedly connected on the rotary table.
The visual monitoring device for atomic absorption spectrophotometer, wherein: the turntable is also fixedly provided with a light blocking sheet, the motor base is fixedly provided with an optical coupler, the position of the optical coupler triggered by the light blocking sheet is the position of a prism reflected light beam, the optical coupler is electrically connected with a circuit control board, and the circuit control board is electrically connected with the motor.
The visual monitoring device for atomic absorption spectrophotometer, wherein: be provided with the banking pin on the carousel, the banking pin can take place to interfere with the edge of motor cabinet to the biggest rotation angle of restriction motor.
The visual monitoring device for atomic absorption spectrophotometer, wherein: the lens structure of the receiving mechanism comprises a lens frame shaft, a color filter and a lens II are arranged at the light inlet of the lens frame shaft, and a lens I is arranged at the light outlet of the lens frame shaft.
The visual monitoring device for atomic absorption spectrophotometer, wherein: the lens frame shaft penetrates through holes at the upper ends of the first support and the second support and is fixed, and the lower ends of the first support and the second support are fixed on the bottom plate through screws; a camera support is fixed on the first support, a camera V-shaped block is fixed on the camera support, the endoscope is installed in a V-shaped groove of the camera V-shaped block, and a camera pressing plate is connected with the camera V-shaped block through screws and used for pressing the endoscope tightly.
Compared with the prior art, adopt above-mentioned technical scheme the utility model has the advantages of: (1) the endoscope is arranged in the light-emitting center direction of the lens structure, so that the sample introduction state can be clearly and accurately judged; (2) the positions of the reflecting mechanism and the receiving mechanism can be conveniently adjusted to quickly reach the optimal observation position; (3) the reflecting mechanism can be folded when not used, so that collision is avoided.
Drawings
Fig. 1 is an overall assembly drawing of the present invention.
Figure 2 is the assembly of the present invention on an instrument.
Fig. 3 is a schematic view of the adjustment nail assembly.
Fig. 4 is a plan view of the present invention.
Fig. 5 is a partial cross-sectional view of the locating pin.
Fig. 6 is an assembled view of the inside of the lens holder shaft.
Fig. 7 is a partial view of the present invention.
Fig. 8 is a schematic view of the present invention when avoiding the light path.
Description of reference numerals: 1-a motor; 2-a turntable; 3-a prism holder; 4-a light barrier; 5-a circuit control board; 6-motor base; 7-fixing blocks; 8-a bottom plate; 9-positioning the nail I; 10-positioning a second nail; 11-a camera mount; 12-camera V-block; 13-an endoscope; 14-a camera platen; 15-thread sleeve I; 16-a first lens; 17-bracket one; 18-a lens holder axis; 19-bracket two; 20-a prism; 21-lens two; 22-a second thread insert; 23-a limit pin; 24-adjusting the nail; 25-an optical bench; 26-a spring leaf; 27-color filter.
Detailed Description
As shown in fig. 1-8, the present invention provides a visual monitoring device for atomic absorption spectrophotometer, which comprises a reflection mechanism, a receiving mechanism and a position adjusting mechanism, wherein the position adjusting mechanism can adjust the positions of the reflection mechanism and the receiving mechanism, so that the light beam can be reflected to the receiving mechanism through the reflection mechanism and can be clearly imaged in a computer; wherein:
as shown in fig. 1, the reflection mechanism is composed of a motor 1, a turntable 2, a prism support 3, a light blocking sheet 4, a circuit control panel 5, a motor base 6, a prism 20, a limit pin 23 and a spring leaf 26, wherein the motor 1 is fixed on the motor base 6, the motor base 6 is fixed on a bottom plate 8, a shaft of the motor 1 passes through a hole at the upper end of the motor base 6 and the spring leaf 26 is fixedly connected with the turntable 2, the spring leaf 26 is elastically abutted between the motor base 6 and the turntable 2 (see fig. 4), a damping force resisting rotation is applied to the turntable 2, the prism 20 is adhered on the prism support 3 by using special glue (the prior art), the prism support 3 is sleeved on a boss of the turntable 2 and screwed by using a jackscrew, and the prism support 3 is fixedly connected on the turntable 2 by using a screw; the turntable 2 is also fixed with a light barrier 4 by a screw, and the motor can drive the turntable 2, the prism bracket 3 and the light barrier 4 to rotate together when in operation; the circuit control board 5 is fixed on the motor base 6, an optical coupler is arranged on the circuit control board, the position where the optical coupler is triggered by the light blocking sheet 4 (see figure 4) is the position where the prism 20 reflects light beams, the prism support 3 is located at the parallel position at the moment, and the prism 20 receives light signals and reflects the light signals to the lens support shaft 18; as shown in fig. 8, when the sample feeding operation does not need to be observed, the motor 1 rotates to drive the prism support 3 to rotate downwards, so as to leave the light path, and meanwhile, the light blocking sheet 4 leaves the position of the optical coupler; as shown in fig. 7, in order to prevent the prism support 3 from colliding with other parts, a limit pin 23 is arranged on the turntable 2, and the limit pin 23 can interfere with the edge of the motor base 6, so as to limit the maximum rotation angle of the motor 1 and prevent the prism support 3 from colliding;
the receiving mechanism consists of a camera support 11, a camera V-shaped block 12, an endoscope 13, a camera pressure plate 14, a first thread insert 15, a first lens 16, a first support 17, a lens support shaft 18, a second support 19, a second lens 21, a second thread insert 22 and a color filter 27, as shown in fig. 1, 2 and 6, the color filter 27 and the second lens 21 are arranged at the light inlet of the lens support shaft 18 and are rotationally pressed by the second thread insert 22; a first lens 16 is arranged at a light outlet of the lens frame shaft 18 and is rotationally pressed by a first threaded sleeve 15; the lens frame shaft 18 penetrates through holes in the upper ends of the first support 17 and the second support 19, the first support 17 and the second support 19 are fixed on the bottom plate 8 through screws, and the lens frame shaft 18 is fixedly connected with the first support 17 and the second support 19 through jackscrews; the camera support 11 is fixed on the first support 17 through screws, the camera V-shaped block 12 is fixed on the camera support 11, the endoscope 13 is installed in a V-shaped groove of the camera V-shaped block 12, and the camera pressing plate 14 is connected with the camera V-shaped block 12 through screws and used for pressing the endoscope 13 tightly so as to enable the endoscope to be arranged in the light emergent center direction of the lens structure;
the position adjusting mechanism consists of a fixed block 7, a first positioning nail 9, a second positioning nail 10 and an adjusting nail 24, as shown in fig. 2, 3 and 4, a long slot hole is formed on the bottom plate 8, and the first positioning nail 9 and the second positioning nail 10 pass through the long slot hole and are fixed on the optical platform 25, so that the moving position of the bottom plate 8 is limited and the moving position can only move along the axial direction parallel to the lens frame shaft 18; a fixed block 7 and an adjusting nail 24 are arranged at one end of the bottom plate 8, as shown in fig. 2, the fixed block 7 is provided with a U-shaped opening and is fixed on an optical platform 25, as shown in fig. 3, one end of the adjusting nail 24 is a screw head, the other end of the adjusting nail is a boss, a reducing shaft part is arranged between the screw head and the boss, the shaft part can be clamped in the U-shaped opening of the fixed block 7, the front end of the boss is a screw thread and is screwed into a screw hole at the end part of the bottom plate 8 along the direction parallel to the axial direction of the lens frame shaft 18; two fabrication holes are arranged on the screw head of the adjusting screw 24, an inner hexagonal wrench can be inserted into the fabrication holes to conveniently rotate the adjusting screw 24, when the adjusting screw 24 rotates, the bottom plate 8 drives the whole reflection mechanism and the receiving mechanism to synchronously move along the axial direction of the lens frame shaft 18, and the purpose of position adjustment can be realized; when the position is properly adjusted and the optical signal can be received and displayed smoothly (as shown in fig. 4), the base plate 8 is fixed to the optical platform 25 by screws.
The utility model discloses an operation process as follows: placing the bottom plate 8 at a position corresponding to the optical platform 25, and penetrating the two slotted holes by using a first positioning nail 9 and a second positioning nail 10, so that the bottom plate 8 is fixed on the optical platform 25, and the bottom plate 8 can move back and forth and cannot move left and right and rotate; then the fixing block 7 and the adjusting nail 24 are installed, and the front and back positions of the bottom plate 8 can be adjusted by rotating the adjusting nail 24; when the position is adjusted to the optimal position (as the position shown in fig. 4), the light beam just irradiates the prism 20, then is reflected to the second lens 21 of the lens frame shaft 18, and then irradiates the middle position of the camera of the endoscope 13 through the first lens 16, so that when a computer displays clear images, the position is the optimal position, and the bottom plate 8 is screwed and fixed on the optical platform 25 by two screws. The utility model discloses when need not observe the appearance operation of advancing, can with computer emission instruction, 1 anticlockwise rotation of motor, prism support 3 downwardly rotating dodges the light path, when changeing certain angle, 1 stall of motor does not influence the instrument and normally detects the sample. When the operation of advancing a kind is observed once more to needs, need not adjust device mounted position once more, only need with the computer send instruction, motor 1 clockwise rotation, prism support 3 upwards rotates, and when the opto-coupler was cut to barn door 4, motor 1 stopped rotating, 3 positions of prism support just in time can receive optical signal and reflect away this moment, pass the image to the computer by endoscope 13 at last, can monitor the appearance condition of advancing a kind with the computer.
The above description is intended to be illustrative, and not restrictive, and those skilled in the art will understand that many modifications, variations, or equivalents may be made without departing from the spirit and scope of the present invention, for example, the connection between the base plate and the optical platform using the guide rail and the slider to limit the linear movement between the base plate and the optical platform, or the position adjustment mechanism is replaced by a linear motor instead of using a translation screw structure, which is within the scope of the present invention.
Claims (10)
1. A visual monitoring device for atomic absorption spectrophotometer which characterized in that: by reflecting mechanism, receiving mechanism and position control mechanism constitute, wherein:
the reflecting mechanism is provided with a prism which is arranged on the bottom plate and can reflect the light beam to the receiving mechanism;
the receiving mechanism is provided with a lens structure arranged on the bottom plate and an endoscope arranged in the light-emitting center direction of the lens structure;
the base plate is mounted on the optical platform and is constrained to move only in an axial direction parallel to the lens holder axis, and the position adjustment mechanism is capable of driving the base plate to move in an axial direction parallel to the lens holder axis.
2. A visual monitoring device for atomic absorption spectrophotometer according to claim 1, characterized by: the position adjusting mechanism comprises a fixed block and an adjusting nail, the fixed block is provided with a U-shaped opening and is fixed on the optical platform, the adjusting nail is clamped in the U-shaped opening of the fixed block and can only rotate, one end of the adjusting nail is a screw head, and the other end of the adjusting nail is provided with a thread and is screwed into a threaded hole in the end part of the bottom plate along the axial direction parallel to the lens frame shaft.
3. A visual monitoring device for atomic absorption spectrophotometer according to claim 2, characterized in that: the adjusting nail is clamped in the U-shaped opening of the fixing block through the shaft part of the reducing diameter.
4. A visual monitoring device for atomic absorption spectrophotometer according to claim 1, characterized by: the bottom plate is provided with at least two slotted holes, and the bottom plate is connected to the optical platform by virtue of positioning nails penetrating through the slotted holes.
5. A visual monitoring device for atomic absorption spectrophotometer according to claim 1, characterized by: the bottom plate and the optical platform can be relatively fixed through screws.
6. A visual monitoring device for atomic absorption spectrophotometer according to claim 1, characterized by: the reflecting mechanism further comprises a motor, a rotary table, a prism support, a motor base and a spring piece, the motor is fixed on the motor base, the motor base is fixed on the bottom plate, a shaft of the motor penetrates through a hole in the upper end of the motor base and is fixedly connected with the rotary table through the spring piece, the spring piece is elastically abutted between the motor base and the rotary table to form damping force, the prism is bonded on the prism support, and the prism support is fixedly connected on the rotary table.
7. The visual monitoring device for atomic absorption spectrophotometer of claim 6, wherein: the turntable is also fixedly provided with a light blocking sheet, the motor base is fixedly provided with an optical coupler, the position of the optical coupler triggered by the light blocking sheet is the position of a prism reflected light beam, the optical coupler is electrically connected with a circuit control board, and the circuit control board is electrically connected with the motor.
8. The visual monitoring device for atomic absorption spectrophotometer of claim 6, wherein: be provided with the banking pin on the carousel, the banking pin can take place to interfere with the edge of motor cabinet to the biggest rotation angle of restriction motor.
9. A visual monitoring device for atomic absorption spectrophotometer according to claim 1, characterized by: the lens structure of the receiving mechanism comprises a lens frame shaft, a color filter and a lens II are arranged at the light inlet of the lens frame shaft, and a lens I is arranged at the light outlet of the lens frame shaft.
10. A visual monitoring device for atomic absorption spectrophotometer according to claim 9, wherein: the lens frame shaft penetrates through holes at the upper ends of the first support and the second support and is fixed, and the lower ends of the first support and the second support are fixed on the bottom plate through screws; a camera support is fixed on the first support, a camera V-shaped block is fixed on the camera support, the endoscope is installed in a V-shaped groove of the camera V-shaped block, and a camera pressing plate is connected with the camera V-shaped block through screws and used for pressing the endoscope tightly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022920705.9U CN214539230U (en) | 2020-12-08 | 2020-12-08 | Visual monitoring device for atomic absorption spectrophotometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022920705.9U CN214539230U (en) | 2020-12-08 | 2020-12-08 | Visual monitoring device for atomic absorption spectrophotometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214539230U true CN214539230U (en) | 2021-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022920705.9U Active CN214539230U (en) | 2020-12-08 | 2020-12-08 | Visual monitoring device for atomic absorption spectrophotometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214539230U (en) |
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2020
- 2020-12-08 CN CN202022920705.9U patent/CN214539230U/en active Active
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