Sample holder rotating device of ultraviolet spectrograph

Abstract

The invention discloses an ultraviolet spectrometer sample holder rotating device, and relates to the technical field of ultraviolet spectrometers. The ultraviolet spectrometer sample holder rotating device comprises a main body arranged on an ultraviolet spectrometer, a sample chamber and a cover plate, a sample holder rotating mechanism is arranged in the sample chamber, the sample holder rotating mechanism comprises a rotating shaft rotating at the bottom of the sample chamber, the upper end of the rotating shaft is fixedly connected with a disc, and the lower end of the rotating shaft is fixedly connected with the cover plate. A plurality of fixing rings are fixedly connected to the side wall of the disc, and first rotating discs are rotationally connected into the fixing rings. According to the rotating device for the sample holder of the ultraviolet spectrometer, the sample holder can be conveniently rotated, a plurality of sample pools can be conveniently detected, the detection efficiency can be improved, meanwhile, liquid samples in the sample pools can be automatically stirred in the rotating process, the sample pools can be conveniently rotated during detection, the detection effect can be improved, and the detection efficiency can be improved. Therefore, the detection efficiency and effect are improved.

Description

Technical Field

[0001] This invention relates to the field of ultraviolet spectrometer technology, specifically to a sample holder rotation device for an ultraviolet spectrometer. Background Technology

[0002] Ultraviolet (UV) spectrometers, as important analytical and detection devices, are widely used in various fields such as chemistry, biology, medicine, and environmental monitoring due to their advantages of high sensitivity and rapid detection. They are mainly used for qualitative and quantitative analysis of substances, as well as structural characterization. During the use of a UV spectrometer, the sample holder is the core component that holds the sample cell, and its performance directly affects the detection efficiency and the accuracy of the results.

[0003] Currently, most UV spectrometer sample holders on the market are fixed structures or only allow for simple translational switching. When multiple liquid samples need to be continuously tested, operators must manually change the sample cells one by one. This is not only cumbersome and time-consuming, but also prone to introducing human error during the replacement process, such as sample cell placement deviations or sample contamination, which seriously affects the detection efficiency and reliability of the results. Furthermore, it is not convenient to rotate the sample cells for multi-angle detection. In addition, liquid samples may exhibit uneven component distribution and precipitation when static. Existing UV spectrometer sample holders typically lack corresponding sample agitation devices, leading to significant deviations in the detection data and failing to accurately reflect the actual characteristics of the sample. Although operators may manually stir the sample before detection in some scenarios, manual operation is inefficient and it is difficult to ensure uniformity and consistency of stirring, further limiting the quality and efficiency of the detection work and affecting the efficiency and effectiveness of the test. Summary of the Invention

[0004] The purpose of this invention is to provide a sample holder rotation device for an ultraviolet spectrometer to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a sample holder rotation device for an ultraviolet spectrometer, comprising a main body, a sample chamber, and a cover plate disposed on the ultraviolet spectrometer. A sample holder rotation mechanism is disposed within the sample chamber, and the sample holder rotation mechanism includes a rotating shaft rotating at the bottom of the sample chamber. A disk is fixedly connected to the upper end of the rotating shaft, and multiple fixing rings are fixedly connected to the side wall of the disk. A first rotating disk is rotatably connected within the fixing rings, and a clamping mechanism for clamping the sample cell is disposed on the top of the first rotating disk. A sealing cover is connected to the top of each of the first rotating disks via a lifting mechanism, and an agitation mechanism for agitating the liquid sample in the sample cell is disposed on the top of the sealing cover. The rotation of the rotating shaft is driven by a first driving mechanism, and the rotation of the first rotating disk is driven by a second driving mechanism.

[0006] Preferably, the first driving mechanism includes a first gear fixedly sleeved on the side wall of the rotating shaft, and a first rack is connected to the sample chamber through a moving mechanism. The first rack meshes with the first gear, and a limiting mechanism for limiting the rotating shaft is provided in the sample chamber.

[0007] Preferably, the moving mechanism includes two connecting rods fixedly connected to the side wall of the first rack, and a lifting block is sleeved on the side wall of the connecting rod. Two first connecting blocks are fixedly connected to the side wall of the lifting block, and the first connecting blocks are connected to the bottom of the sample chamber through a first spring telescopic rod. A second connecting block is fixedly connected to the other end of the connecting rod, and a push rod is fixedly connected to the side wall of the second connecting block. A rubber block is fixedly sleeved on the side wall of the push rod, and a notch is opened on the side wall of the cover plate.

[0008] Preferably, the limiting mechanism includes a limiting disk fixedly sleeved on the side wall of the rotating shaft, and the side wall of the limiting disk has multiple arrayed arc-shaped grooves. The bottom of the sample chamber is connected to an arc-shaped block through a reset mechanism, and the arc-shaped block can be inserted into the arc-shaped groove.

[0009] Preferably, the reset mechanism includes a support plate fixedly connected to the bottom of the sample chamber, and two symmetrically arranged T-shaped guide rods are inserted into the side wall of the support plate. One end of each T-shaped guide rod is fixed to the side wall of the arc-shaped block, and a first spring is sleeved on the side wall of each T-shaped guide rod.

[0010] Preferably, the second driving mechanism includes a connecting shaft fixedly connected to the bottom of the first rotating disk, and a second gear fixedly connected to the bottom of the connecting shaft. A connecting plate is fixedly connected to the side wall of the first rack, and a fixing plate is fixedly connected to the bottom of the sample chamber. The side wall of the fixing plate is connected to the second rack through a second spring telescopic rod, and a connecting mechanism is provided between the second rack and the connecting plate.

[0011] Preferably, the connecting mechanism includes a plurality of arrayed insertion holes on the top of the connecting plate, and a third connecting block is fixedly connected to the side wall of the second rack, and a pin is fixedly connected to the bottom of the third connecting block, and the pin can be inserted into the insertion hole.

[0012] Preferably, the clamping mechanism includes two support blocks fixedly connected to the top of the first rotating disk, and the sidewalls of the support blocks are connected to two symmetrically arranged V-shaped clamps via a third spring telescopic rod, wherein the V-shaped clamps include inclined sections.

[0013] Preferably, the lifting mechanism includes a fourth spring telescopic rod connected between the sealing cover and the first rotating disk, and a first mounting block is fixedly connected to the side wall of the sample chamber. A first push frame is fixedly connected to the side wall of the first mounting block, and the first push frame includes a first inclined plate and a first arc-shaped plate connected end to end. The sealing cover can slide at the bottom of the first push frame.

[0014] Preferably, the stirring mechanism includes a second rotating disk rotatably connected to the top of the sealing cover, and a stirring rod inserted into the top of the second rotating disk. A stirring plate is fixedly connected to the side wall of the stirring rod, and the second rotating disk is sleeved on the side wall of the stirring plate. An L-shaped plate is sleeved on the side wall of the stirring rod, and the L-shaped plate is fixed to the top of the sealing cover. A rubber wheel is fixedly sleeved on the side wall of the stirring rod, and a second spring is fixedly connected to the bottom of the rubber wheel. A rotating ring is fixedly connected to the lower end of the second spring, and the rotating ring is rotatably connected to the top of the L-shaped plate. A second mounting block is fixedly connected to the side wall of the sample chamber, and a second pushing frame is fixedly connected to the side wall of the second mounting block. The second pushing frame includes a second inclined plate and a second arc-shaped plate connected end to end, and a third arc-shaped plate is fixedly connected to the bottom of the second arc-shaped plate. The upper end of the stirring rod can slide at the bottom of the second pushing frame, and the rubber wheel can roll on the side wall of the third arc-shaped plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This ultraviolet spectrometer sample holder rotation device, through the inclusion of a first driving mechanism, a limiting mechanism, and a clamping mechanism, clamps and secures multiple sample cells containing liquid samples onto each first rotating disk. During clamping, the bottom of the sample cell abuts against the inclined section and slides downwards, thereby pushing two V-shaped clamping plates away from each other. Simultaneously, a third spring telescopic rod is compressed. When the sample cell moves between the two V-shaped clamping plates, the action of the third spring telescopic rod ensures that the two V-shaped clamping plates can clamp and limit the sample cell, making it more stable and reliable. Then, the cover is closed, and detection is performed through the detection module inside the sample chamber. When it is necessary to change the sample cell for detection, pushing the push rod can move the second connecting block. Simultaneously, the connecting rod drives the first rack to move, thereby driving the first gear to rotate. When the first gear rotates, it drives the disc to rotate through the rotating shaft, which can rotate another sample cell to the detection station. This process is repeated to facilitate the rotation of the sample holder and the detection of multiple sample cells, thereby improving detection efficiency. Furthermore, when the rotating shaft rotates, it drives the limiting disc to rotate, allowing the arc-shaped block to slide out of the arc-shaped groove and slide along the side wall of the limiting disc. When the arc-shaped block is aligned with another arc-shaped groove, the arc-shaped block can abut against the arc-shaped groove under the action of the first spring, thereby rotating the rotating shaft and limiting the disc to ensure the rotation angle of the disc, thus ensuring the detection effect.

[0016] This ultraviolet spectrometer sample holder rotation device, through the inclusion of a stirring mechanism, allows for the following operation during detection: When the sample cell rotates to the detection position, as the disc rotates, the sealing cover slides along the first inclined plate to the bottom of the first arc-shaped plate, pushing the sealing cover downwards to abut against the top of the sample cell. Simultaneously, the fourth spring telescopic rod is compressed. When the upper end of the stirring rod slides along the second inclined plate to the bottom of the second arc-shaped plate, it pushes the stirring rod and stirring plate downwards, inserting them into the sample cell. Simultaneously, the second spring is compressed, allowing the rubber wheel to roll along the side wall of the third arc-shaped plate. The rotation of the rubber wheel drives the stirring rod and stirring plate to rotate. This allows for automatic agitation of the liquid sample in the sample cell, improving the effectiveness of subsequent testing. When the upper end of the stirring rod disengages from the second arc-shaped plate, the stirring rod and stirring plate can move upwards and reset under the action of the second spring. Under the action of the second rotating disk, the liquid sample adhering to the surface of the stirring rod and stirring plate can be scraped and cleaned to ensure the testing effect. When the sealing cover disengages from the first arc-shaped plate, the sealing cover can move upwards and reset under the action of the fourth spring telescopic rod. Then, the sample cell can be rotated to the testing position. During the rotation of the sample holder, the liquid sample in the sample cell can be automatically agitated without causing liquid sample leakage, thus improving the effectiveness of subsequent testing.

[0017] This ultraviolet spectrometer sample holder rotation device, through the inclusion of a second drive mechanism, allows for upward movement of the push rod during detection. Simultaneously, the rubber block is compressed, causing the lifting block and the first connecting block to move upward. The first spring telescopic rod is stretched. When the lifting block moves upward, it drives the first rack upward via the connecting rod, disengaging it from the first gear. At the same time, it drives the connecting plate upward, inserting the pin into the insertion hole. Next, the push rod is pushed into the sample chamber, causing the second rack to move via the connecting plate and the pin. Simultaneously, the second spring telescopic rod is compressed. When the push rod is no longer pushed inward, the second rack moves back to its original position under the action of the second spring telescopic rod. This reciprocating motion drives the second rack, which in turn drives the connecting shaft and the first rotating disk to rotate via the second gear. This, in turn, drives the sample cell to rotate via the clamping mechanism, improving the detection effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram illustrating the usage state of the present invention; Figure 2 This is a schematic diagram of the internal structure of the sample chamber in this invention; Figure 3 This is a schematic diagram of the overall structure of the present invention; Figure 4 This is a schematic diagram of the structure of the first driving mechanism in this invention; Figure 5 This is a schematic diagram of the clamping mechanism and the stirring mechanism in this invention; Figure 6 This is a schematic diagram of the limiting mechanism in this invention; Figure 7 This is a schematic diagram of the structure of the second pusher frame in this invention; Figure 8 This is a schematic diagram of the structure of the first spring telescopic rod in this invention; Figure 9 This is a schematic diagram of the connecting mechanism in this invention.

[0019] In the diagram: 101, Main body; 102, Sample chamber; 103, Cover plate; 201, First gear; 202, First rack; 301, Lifting block; 302, First spring telescopic rod; 303, Connecting rod; 304, Second connecting block; 305, Push rod; 306, Rubber block; 307, Notch; 308, First connecting block; 401, Limiting plate; 402, Arc groove; 403, Arc block; 501, Support plate; 502, T-shaped guide rod; 503, First spring; 601, Connecting shaft; 602, Second gear; 603, Second rack; 604, Connecting plate; 605, Fixing plate; 606, Second spring telescopic rod; 701, Insertion hole; 702, Third connecting rod. 703. Connecting block; 801. Pin; 802. Fourth spring telescopic rod; 803. First mounting block; 804. First inclined plate; 905. First arc-shaped plate; 906. Support block; 907. Third spring telescopic rod; 908. V-shaped clamp; 909. Inclined section; 1000. Second rotating disk; 1001. Stirring rod; 1002. Stirring plate; 1003. Rubber wheel; 1004. Second spring; 1005. Rotating ring; 1006. Second mounting block; 1007. Second inclined plate; 1008. Second inclined plate; 1009. Second arc-shaped plate; 1010. Third arc-shaped plate; 1011. L-shaped plate; 12. Rotating shaft; 13. Disc; 14. Fixing ring; 15. First rotating disk; 16. Sealing cover. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1-9This invention provides a sample holder rotation device for an ultraviolet spectrometer, comprising a main body 101, a sample chamber 102, and a cover plate 103 mounted on the ultraviolet spectrometer. A detection module is also installed within the sample chamber 102. These are all well-known technologies in this field and will not be described in detail here. A sample holder rotation mechanism is installed within the sample chamber 102, including a rotating shaft 11 rotating at the bottom of the sample chamber 102. A disk 12 is fixedly connected to the upper end of the rotating shaft 11, and multiple fixing rings 13 are fixedly connected to the side wall of the disk 12. A first rotating disk 14 is rotatably connected within each fixing ring 13, and the top of the first rotating disk 14 is provided with a clamping device for the sample cell. The clamping mechanism has a sealing cover 15 connected to the top of each first rotating disk 14 via a lifting mechanism. The top of the sealing cover 15 is equipped with a stirring mechanism for agitating the liquid sample in the sample cell. The rotation of the rotating shaft 11 is driven by a first driving mechanism, and the rotation of the first rotating disk 14 is driven by a second driving mechanism. This facilitates the rotation of the sample holder, enabling the detection of multiple sample cells and improving detection efficiency. Simultaneously, during rotation, the liquid sample in the sample cell is automatically agitated. Furthermore, the sample cell is easily rotated during detection, improving the detection effect and thus enhancing both detection efficiency and effectiveness.

[0022] The first driving mechanism includes a first gear 201 fixedly sleeved on the side wall of the rotating shaft 11, and a first rack 202 connected to the sample chamber 102 through a moving mechanism. The first rack 202 meshes with the first gear 201, and a limiting mechanism for limiting the rotating shaft 11 is provided in the sample chamber 102. The moving mechanism drives the first rack 202 to move, thereby driving the first gear 201 to rotate. When the first gear 201 rotates, it can drive the disc 12 to rotate through the rotating shaft 11, thereby rotating another sample cell to the detection station. This process is repeated to facilitate the rotation of the sample holder and the detection of multiple sample cells, thereby improving the detection efficiency.

[0023] The moving mechanism includes two connecting rods 303 fixedly connected to the side wall of the first rack 202. A lifting block 301 is sleeved on the side wall of each connecting rod 303. Two first connecting blocks 308 are fixedly connected to the side wall of the lifting block 301. The first connecting blocks 308 are connected to the bottom of the sample chamber 102 via a first spring telescopic rod 302. A second connecting block 304 is fixedly connected to the other end of each connecting rod 303. A push rod 305 is fixedly connected to the side wall of the second connecting block 304. A rubber block 306 is fixedly sleeved on the side wall of the push rod 305. The side wall of the cover plate 103 has a notch 307. Pushing the push rod 305 can drive the second connecting block 304 to move. At the same time, the connecting rod 303 drives the first rack 202 to move, pushing the push rod 305 to move upward. Meanwhile, the rubber block 306 is compressed, which drives the lifting block 301 and the first connecting block 308 to move upward. The first spring telescopic rod 302 is stretched. When the lifting block 301 moves upward, it can drive the first rack 202 to move upward and disengage from the first gear 201 through the connecting rod 303.

[0024] The limiting mechanism includes a limiting disk 401 fixedly sleeved on the side wall of the rotating shaft 11, and the side wall of the limiting disk 401 has multiple arrayed arc-shaped grooves 402. The bottom of the sample chamber 102 is connected to an arc-shaped block 403 through a reset mechanism, and the arc-shaped block 403 can be inserted into the arc-shaped groove 402. When the rotating shaft 11 rotates, it can drive the limiting disk 401 to rotate, so that the arc-shaped block 403 can slide out from the arc-shaped groove 402 and slide along the side wall of the limiting disk 401. When the arc-shaped block 403 is aligned with another arc-shaped groove 402, the arc-shaped block 403 can abut against the arc-shaped groove 402 under the action of the reset mechanism, thereby rotating the rotating shaft 11 and limiting the disk 12, ensuring the rotation angle of the disk 12, and thus ensuring the detection effect.

[0025] The reset mechanism includes a support plate 501 fixedly connected to the bottom of the sample chamber 102, and two symmetrically arranged T-shaped guide rods 502 are inserted into the side wall of the support plate 501. One end of the T-shaped guide rod 502 is fixed to the side wall of the arc block 403, and a first spring 503 is sleeved on the side wall of each T-shaped guide rod 502, which guides and resets the movement of the arc block 403.

[0026] The second drive mechanism includes a connecting shaft 601 fixedly connected to the bottom of the first rotating disk 14, and a second gear 602 fixedly connected to the bottom of the connecting shaft 601. A connecting plate 604 is fixedly connected to the side wall of the first rack 202, and a fixing plate 605 is fixedly connected to the bottom of the sample chamber 102. A second rack 603 is connected to the side wall of the fixing plate 605 via a second spring telescopic rod 606, and a connecting mechanism is provided between the second rack 603 and the connecting plate 604. When the first rack 202 moves upward, the connecting mechanism connects the first rack 202 and the second rack 603. Next, the push rod 305 is moved into the sample chamber 102, which drives the second rack 603 to move through the connecting mechanism. At the same time, the second spring telescopic rod 606 is compressed. When the push rod 305 is no longer pushed inward, the second rack 603 can move back to its original position under the action of the second spring telescopic rod 606. This process is repeated so that the second rack 603 can move back and forth, and drive the connecting shaft 601 and the first rotating disk 14 to rotate through the second gear 602. In turn, the clamping mechanism drives the sample cell to rotate, which can improve the detection effect.

[0027] The connecting mechanism includes multiple arrayed insertion holes 701 on the top of the connecting plate 604, and a third connecting block 702 is fixedly connected to the side wall of the second rack 603. A pin 703 is fixedly connected to the bottom of the third connecting block 702, and the pin 703 can be inserted into the insertion hole 701. When the first rack 202 moves upward, it can drive the connecting plate 604 to move upward synchronously and insert the pin 703 into the insertion hole 701.

[0028] The clamping mechanism includes two support blocks 901 fixedly connected to the top of the first rotating disk 14. The side walls of the support blocks 901 are connected to two symmetrically arranged V-shaped clamping plates 903 via a third spring telescopic rod 902. The V-shaped clamping plates 903 include inclined sections 904. Multiple sample pools containing liquid samples are placed on each of the first rotating disks 14 for clamping and fixing. During clamping, the bottom of the sample pool abuts against the inclined section 904 and slides downward, thereby pushing the two V-shaped clamping plates 903 away from each other. At the same time, the third spring telescopic rod 902 is compressed. When the sample pool moves between the two V-shaped clamping plates 903, the two V-shaped clamping plates 903 can clamp and limit the sample pool under the action of the third spring telescopic rod 902, making it more stable and reliable.

[0029] The lifting mechanism includes a fourth spring telescopic rod 801 connected between the sealing cover 15 and the first rotating disk 14, and a first mounting block 802 is fixedly connected to the side wall of the sample chamber 102. A first push frame is fixedly connected to the side wall of the first mounting block 802, and the first push frame includes a first inclined plate 803 and a first arc plate 804 connected end to end. The sealing cover 15 can slide at the bottom of the first push frame. When the disk 12 rotates, when the sealing cover 15 slides along the first inclined plate 803 to the bottom of the first arc plate 804, it can push the sealing cover 15 downward and abut against the top of the sample cell. At the same time, the fourth spring telescopic rod 801 is compressed.

[0030] The stirring mechanism includes a second rotating disk 1001 rotatably connected to the top of the sealing cover 15, and a stirring rod 1002 inserted into the top of the second rotating disk 1001. A stirring plate 1003 is fixedly connected to the side wall of the stirring rod 1002, and the second rotating disk 1001 is sleeved on the side wall of the stirring plate 1003. An L-shaped plate 1011 is sleeved on the side wall of the stirring rod 1002, and the L-shaped plate 1011 is fixed to the top of the sealing cover 15. A rubber wheel 1004 is fixedly sleeved on the side wall of the stirring rod 1002, and a second spring 1005 is fixedly connected to the bottom of the rubber wheel 1004. A rotating ring 1006 is fixedly connected to the lower end of the spring 1005, and the rotating ring 1006 is rotatably connected to the top of the L-shaped plate 1011. A second mounting block 1007 is fixedly connected to the side wall of the sample chamber 102, and a second push frame is fixedly connected to the side wall of the second mounting block 1007. The second push frame includes a second inclined plate 1008 and a second arc-shaped plate 1009 connected end to end, and a third arc-shaped plate 1010 is fixedly connected to the bottom of the second arc-shaped plate 1009. The upper end of the stirring rod 1002 can slide at the bottom of the second push frame, and the rubber wheel 1004 can slide on the third arc-shaped plate. The stirring rod 1002 rolls along the side wall of the second inclined plate 1008. When the upper end of the stirring rod 1002 slides along the second inclined plate 1008 to the bottom of the second arc-shaped plate 1009, it can push the stirring rod 1002 and the stirring plate 1003 downward, inserting them into the sample cell. At the same time, the second spring 1005 is compressed, allowing the rubber wheel 1004 to roll along the side wall of the third arc-shaped plate 1010. When the rubber wheel 1004 rotates, it can drive the stirring rod 1002 and the stirring plate 1003 to rotate, thereby stirring the sample cell. The liquid sample is automatically agitated, which can improve the effect of subsequent detection. When the upper end of the stirring rod 1002 is disengaged from the second arc plate 1009, the stirring rod 1002 and the stirring plate 1003 can move upward and reset under the action of the second spring 1005. Under the action of the second rotating disk 1001, the liquid sample adhering to the surface of the stirring rod 1002 and the stirring plate 1003 can be scraped and cleaned to ensure the detection effect. When the sealing cover 15 is disengaged from the first arc plate 804, the sealing cover 15 can move upward and reset under the action of the fourth spring telescopic rod 801.

[0031] Working principle: In use, multiple sample cells containing liquid samples are placed on each of the first rotating disks 14 and clamped in place. During clamping, the bottom of the sample cell abuts against the inclined section 904 and slides downward, thereby pushing the two V-shaped clamps 903 away from each other. At the same time, the third spring telescopic rod 902 is compressed. When the sample cell moves between the two V-shaped clamps 903, the action of the third spring telescopic rod 902 enables the two V-shaped clamps 903 to clamp and limit the sample cell, making it more stable and reliable. Then, the cover plate 103 is closed, and the detection module inside the sample chamber 102 performs the detection. When it is necessary to change the sample cell for detection, pushing the push rod 305 can drive the second connecting block 304 to move. At the same time, the connecting rod 303 drives the first rack 202 to move. The rotating shaft 11 drives the first gear 201 to rotate. When the first gear 201 rotates, it drives the disc 12 to rotate via the rotating shaft 11, which rotates another sample cell to the detection station. This process is repeated to facilitate the rotation of the sample holder and the detection of multiple sample cells, thereby improving detection efficiency. Furthermore, when the rotating shaft 11 rotates, it drives the limiting disc 401 to rotate, allowing the arc block 403 to slide out of the arc groove 402 and slide along the side wall of the limiting disc 401. When the arc block 403 is aligned with another arc groove 402, the arc block 403 abuts against the arc groove 402 under the action of the first spring 503, thereby rotating the rotating shaft 11 and limiting the disc 12 to ensure the rotation angle of the disc 12, thus ensuring the detection effect.

[0032] During testing, when the sample cell rotates to the testing station, as the disc 12 rotates, when the sealing cover 15 slides along the first inclined plate 803 to the bottom of the first arc plate 804, it can push the sealing cover 15 downward and abut against the top of the sample cell. At the same time, the fourth spring telescopic rod 801 is compressed. When the upper end of the stirring rod 1002 slides along the second inclined plate 1008 to the bottom of the second arc plate 1009, it can push the stirring rod 1002 and the stirring plate 1003 downward and insert them into the sample cell. Simultaneously, the second spring 1005 is compressed, and the rubber wheel 1004 can roll along the side wall of the third arc plate 1010. When the rubber wheel 1004 rotates, it can drive the stirring rod 1002 and the stirring plate 1003 to rotate, thereby automatically agitating the liquid sample in the sample cell and improving the effect of subsequent testing.

[0033] When the upper end of the stirring rod 1002 disengages from the second arc-shaped plate 1009, the stirring rod 1002 and the stirring plate 1003 can move upward and reset under the action of the second spring 1005. Under the action of the second rotating disk 1001, the liquid sample adhering to the surface of the stirring rod 1002 and the stirring plate 1003 can be scraped and cleaned to ensure the detection effect. When the sealing cover 15 disengages from the first arc-shaped plate 804, the sealing cover 15 can move upward and reset under the action of the fourth spring telescopic rod 801. Then, the sample cell can be rotated to the detection position. During the rotation of the sample holder, the liquid sample in the sample cell can be automatically stirred without causing liquid sample leakage, thus improving the effect of subsequent detection.

[0034] During testing, the push rod 305 is pushed upwards, simultaneously compressing the rubber block 306 and causing the lifting block 301 and the first connecting block 308 to move upwards. The first spring telescopic rod 302 is stretched. When the lifting block 301 moves upwards, it can drive the first rack 202 upwards via the connecting rod 303 and disengage it from the first gear 201. At the same time, it can drive the connecting plate 604 to move upwards synchronously and insert the pin 703 into the insertion hole 701. Then, the push rod 305 is pushed into the sample chamber 102. The second rack 603 can be moved by the connecting plate 604 and the pin 703. At the same time, the second spring telescopic rod 606 is compressed. When the push rod 305 is no longer pushed inward, the second rack 603 can move and reset under the action of the second spring telescopic rod 606. This reciprocating motion allows the second rack 603 to move back and forth, and drives the connecting shaft 601 and the first rotating disk 14 to rotate through the second gear 602. In turn, the clamping mechanism drives the sample cell to rotate, which can improve the detection effect.

[0035] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art. The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A sample holder rotation device for an ultraviolet spectrometer, comprising a main body (101), a sample chamber (102), and a cover plate (103) disposed on the ultraviolet spectrometer, characterized in that: The sample chamber (102) is provided with a sample rack rotation mechanism, which includes a rotating shaft (11) rotating at the bottom of the sample chamber (102). A disc (12) is fixedly connected to the upper end of the rotating shaft (11), and multiple fixing rings (13) are fixedly connected to the side wall of the disc (12). A first rotating disk (14) is rotatably connected inside the fixing ring (13), and a clamping mechanism for clamping the sample pool is provided on the top of the first rotating disk (14). A sealing cover (15) is connected to the top of each first rotating disk (14) through a lifting mechanism, and a stirring mechanism for stirring the liquid sample in the sample pool is provided on the top of the sealing cover (15). The rotation of the rotating shaft (11) is driven by a first driving mechanism, and the rotation of the first rotating disk (14) is driven by a second driving mechanism.

2. The ultraviolet spectrometer sample holder rotation device according to claim 1, characterized in that: The first driving mechanism includes a first gear (201) fixedly sleeved on the side wall of the rotating shaft (11), and a first rack (202) is connected to the sample chamber (102) through a moving mechanism. The first rack (202) meshes with the first gear (201), and a limiting mechanism for limiting the rotating shaft (11) is provided in the sample chamber (102).

3. The ultraviolet spectrometer sample holder rotation device according to claim 2, characterized in that: The moving mechanism includes two connecting rods (303) fixedly connected to the side wall of the first rack (202), and a lifting block (301) is sleeved on the side wall of the connecting rod (303). Two first connecting blocks (308) are fixedly connected to the side wall of the lifting block (301), and the first connecting block (308) is connected to the bottom of the sample chamber (102) through a first spring telescopic rod (302). The other end of the connecting rod (303) is fixedly connected to a second connecting block (304), and a push rod (305) is fixedly connected to the side wall of the second connecting block (304). A rubber block (306) is fixedly sleeved on the side wall of the push rod (305), and a notch (307) is opened on the side wall of the cover plate (103).

4. The ultraviolet spectrometer sample holder rotation device according to claim 2, characterized in that: The limiting mechanism includes a limiting disk (401) fixedly sleeved on the side wall of the rotating shaft (11), and the side wall of the limiting disk (401) is provided with a plurality of arc-shaped grooves (402) arranged in an array. The bottom of the sample chamber (102) is connected to an arc-shaped block (403) through a reset mechanism, and the arc-shaped block (403) can be inserted into the arc-shaped groove (402).

5. The ultraviolet spectrometer sample holder rotation device according to claim 4, characterized in that: The reset mechanism includes a support plate (501) fixedly connected to the bottom of the sample chamber (102), and two symmetrically arranged T-shaped guide rods (502) are inserted into the side wall of the support plate (501). One end of the T-shaped guide rod (502) is fixed to the side wall of the arc block (403), and a first spring (503) is sleeved on the side wall of each T-shaped guide rod (502).

6. The ultraviolet spectrometer sample holder rotation device according to claim 2, characterized in that: The second driving mechanism includes a connecting shaft (601) fixedly connected to the bottom of the first rotating disk (14), and a second gear (602) fixedly connected to the bottom of the connecting shaft (601). A connecting plate (604) is fixedly connected to the side wall of the first rack (202), and a fixing plate (605) is fixedly connected to the bottom of the sample chamber (102). The side wall of the fixing plate (605) is connected to a second rack (603) through a second spring telescopic rod (606), and a connecting mechanism is provided between the second rack (603) and the connecting plate (604).

7. The ultraviolet spectrometer sample holder rotation device according to claim 6, characterized in that: The connecting mechanism includes a plurality of arrayed sockets (701) on the top of the connecting plate (604), and a third connecting block (702) is fixedly connected to the side wall of the second rack (603). A pin (703) is fixedly connected to the bottom of the third connecting block (702), and the pin (703) can be inserted into the socket (701).

8. The ultraviolet spectrometer sample holder rotation device according to claim 1, characterized in that: The clamping mechanism includes two support blocks (901) fixedly connected to the top of the first rotating disk (14), and the side wall of the support block (901) is connected to two symmetrically arranged V-shaped clamps (903) through a third spring telescopic rod (902). The V-shaped clamps (903) include an inclined section (904).

9. The ultraviolet spectrometer sample holder rotation device according to claim 1, characterized in that: The lifting mechanism includes a fourth spring telescopic rod (801) connected between the sealing cover (15) and the first rotating disk (14), and a first mounting block (802) is fixedly connected to the side wall of the sample chamber (102). A first push frame is fixedly connected to the side wall of the first mounting block (802), and the first push frame includes a first inclined plate (803) and a first arc plate (804) connected end to end. The sealing cover (15) can slide at the bottom of the first push frame.

10. The ultraviolet spectrometer sample holder rotation device according to claim 1, characterized in that: The stirring mechanism includes a second rotating disk (1001) rotatably connected to the top of the sealing cover (15), and a stirring rod (1002) is inserted into the top of the second rotating disk (1001). A stirring plate (1003) is fixedly connected to the side wall of the stirring rod (1002), and the second rotating disk (1001) is sleeved on the side wall of the stirring plate (1003). An L-shaped plate (1011) is sleeved on the side wall of the stirring rod (1002), and the L-shaped plate (1011) is fixed to the top of the sealing cover (15). A rubber wheel (1004) is fixedly sleeved on the side wall of the stirring rod (1002), and a second spring (1005) is fixedly connected to the bottom of the rubber wheel (1004). A rotating ring (1006) is fixedly connected to the lower end of (1005), and the rotating ring (1006) is rotatably connected to the top of the L-shaped plate (1011). A second mounting block (1007) is fixedly connected to the side wall of the sample chamber (102), and a second pusher is fixedly connected to the side wall of the second mounting block (1007). The second pusher includes a second inclined plate (1008) and a second arc plate (1009) connected end to end, and a third arc plate (1010) is fixedly connected to the bottom of the second arc plate (1009). The upper end of the stirring rod (1002) can slide at the bottom of the second pusher, and the rubber wheel (1004) can roll on the side wall of the third arc plate (1010).

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