An optical marking device for high precision sample positioning

Abstract

The utility model relates to the technical field of biomedical engineering discloses an optical marking device for high-precision sample positioning, the utility model discloses a case, exhaust component sets up at the top of case, including gas collecting hood, sets up two groups, and is located the both sides of top of case, washing module sets up in the outer wall of one side of case, including water tank, sets up in the inside bottom end of case, still include washing bin, bolt connection in the outer wall of one side of case, and washing bin one side bottom is provided with valve, integrated exhaust and washing module, has improved the security and environmental protection of biological sample processing process obviously. Its core technical effect lies in that the waste gas and waste liquid generated in the optical marking process are effectively controlled and treated, and the cleanliness of the laboratory environment and the safety of the operating personnel are ensured.

Description

Technical Field

[0001] This utility model relates to the field of biomedical engineering technology, specifically to an optical marking device for high-precision sample positioning. Background Technology

[0002] With the development of biotechnology, precision medicine, and laboratory automation, high-precision sample localization is becoming increasingly important in gene detection, cell analysis, and microfluidic experiments. Optical labeling technology, due to its advantages such as non-contact operation, high resolution, and high repeatability, is widely used for the location identification and tracking of biological samples. However, in actual operation, biological samples need to be extracted and processed before optical labeling. When performing genomics, proteomics, and metabolomics analyses on blood, tissue, and cell samples, chemical reagents such as chloroform, isopropanol, and phenol may be used. The volatilization of these chemical reagents generates waste gases, which not only affect the stability of the optical system but may also endanger the health of operators and cause environmental pollution.

[0003] However, most existing optical labeling devices focus solely on imaging and positioning functions, lacking effective mechanisms for treating exhaust gases. Most devices lack dedicated exhaust structures, relying on the overall laboratory ventilation system, making it difficult to completely remove localized volatiles, thus affecting labeling accuracy and environmental safety. Simultaneously, sample cleaning typically relies on manual labor or separate cleaning equipment, failing to seamlessly integrate with the labeling process, resulting in cumbersome operations, low efficiency, and the risk of sample exposure and contamination. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an optical marking device for high-precision sample positioning.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an optical marking device for high-precision sample positioning, comprising a chassis; an exhaust assembly, disposed on the top of the chassis, comprising two sets of gas collection hoods located on both sides of the top of the chassis; and a cleaning module, disposed on one side of the outer wall of the chassis, comprising a water tank disposed at the bottom of the chassis interior, and a cleaning chamber bolted to one side of the outer wall of the chassis, wherein a valve is provided at the bottom of one side of the cleaning chamber.

[0006] As a further description of the above technical solution:

[0007] The chassis includes: an optical marking probe disposed at the top inside the chassis; and a mounting base disposed at the center inside the chassis.

[0008] As a further description of the above technical solution:

[0009] The exhaust assembly includes: an airflow duct, located at the top of the chassis, with flanges at both ends connecting to the top of two sets of air collection hoods; a fan, located inside both ends of the airflow duct and at the top of the two sets of air collection hoods; and a connecting flange, located at the end of the airflow duct away from the fan and bolted to an external duct.

[0010] As a further description of the above technical solution:

[0011] The cleaning module includes: a spraying component, which is located on the outside of the chassis near the cleaning chamber; a rotating component, which is located at the bottom of the cleaning chamber; and a clamping component, which is located inside the cleaning chamber.

[0012] As a further description of the above technical solution:

[0013] The spraying assembly includes: a water pump, located at the bottom exterior of the casing near the cleaning chamber, with one end connected to the water tank outlet; a first water pipe, with a flange connecting the end of the water pump away from the water tank; a second water pipe, located at the bottom interior of the cleaning chamber, and flanged to the end of the first water pipe away from the water pump; a rotary joint, rotatably located at the bottom interior of the cleaning chamber, with the second water pipe extending into the cleaning chamber through the rotary joint; two sets of hard water pipes, rotatably located inside the cleaning chamber, with their bottoms connected to the top flange of the second water pipes; and spray heads, located on the two sets of hard water pipes, arranged vertically in three sets.

[0014] As a further description of the above technical solution:

[0015] The rotating assembly includes: a drive motor, disposed at the bottom of the cleaning chamber; a first bevel gear, rotating inside the bottom of the cleaning chamber, with one end keyed to the output shaft of the drive motor; a second bevel gear, rotating inside the bottom of the cleaning chamber, meshing with the first bevel gear, and keyed to the rotary joint; and a rotating disk, rotating inside the cleaning chamber, with the top of the second water pipe disposed inside the rotating disk, and its bottom welded to the top of the rotary joint.

[0016] As a further description of the above technical solution:

[0017] The clamping assembly includes: a support column disposed inside the cleaning chamber; a chute formed inside the support column; a slider embedded and sliding in the chute; a clamping seat disposed on top of the slider; two sets of clamping blocks disposed on both sides of the clamping seat; and two sets of compression springs disposed inside the clamping seat, with one end welded to the end of the clamping block near the inside of the clamping seat.

[0018] This utility model has the following beneficial effects:

[0019] 1. By integrating the exhaust assembly and cleaning module, the problem of waste gas and waste liquid pollution generated during the chemical processing of biological samples in the high-precision sample positioning process is effectively solved. The vacuum adsorption fixture set in the chassis, together with the optical labeling probe, ensures the stability and positioning accuracy of the sample during the labeling process. At the same time, the dual gas collection hoods and the fan work together to promptly extract harmful gases, ensuring a safe operating environment and environmental compliance.

[0020] 2. The device utilizes a drive motor to power a bevel gear transmission system, enabling the spray head to rotate and spray within the cleaning chamber. Combined with a sliding clamping assembly, this allows for comprehensive and efficient cleaning of sample containers. The entire system integrates labeling, venting, and cleaning, enhancing automation and efficiency, making it particularly suitable for biological sample processing scenarios with high cleanliness and precision requirements. Attached Figure Description

[0021] Figure 1 This is an overall schematic diagram of an optical marking device for high-precision sample positioning proposed in this utility model;

[0022] Figure 2 This is a partial cross-sectional view of the chassis of an optical marking device for high-precision sample positioning proposed in this utility model;

[0023] Figure 3 This is a half-sectional schematic diagram of the airflow pipe of an optical marking device for high-precision sample positioning proposed in this utility model.

[0024] Figure 4 This is a schematic diagram of the cleaning module of an optical marking device for high-precision sample positioning proposed in this utility model;

[0025] Figure 5 This is a half-sectional schematic diagram of the cleaning chamber of an optical marking device for high-precision sample positioning proposed in this utility model.

[0026] Figure 6 This is a half-sectional schematic diagram of the slider of an optical marking device for high-precision sample positioning proposed in this utility model.

[0027] Legend:

[0028] 1. Chassis; 11. Optical Marking Probe; 12. Mounting Base; 2. Exhaust Assembly; 21. Gas Collection Hood; 22. Airflow Duct; 23. Fan; 24. Connecting Flange; 3. Cleaning Module; 31. Water Tank; 32. Cleaning Chamber; 33. Spraying Assembly; 331. Water Pump; 332. First Water Pipe; 333. Second Water Pipe; 334. Rotary Joint; 335. Hard Water Pipe; 336. Spray Head; 34. Rotating Assembly; 341. Drive Motor; 342. First Bevel Gear; 343. Second Bevel Gear; 344. Rotary Disk; 35. Clamping Assembly; 351. Support Column; 352. Slide Rail; 353. Slider; 354. Clamping Seat; 355. Clamping Block; 356. Compression Spring. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The utility model will be further described in detail below with reference to the accompanying drawings.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] Example 1:

[0033] like Figures 1 to 6As shown, this embodiment provides an optical marking device for high-precision sample positioning, including: a housing 1; an exhaust assembly 2, disposed on the top of the housing 1, including two sets of gas collection hoods 21, located on both sides of the top of the housing 1; and a cleaning module 3, disposed on one side of the outer wall of the housing 1, including a water tank 31, disposed at the bottom of the interior of the housing 1, and a cleaning chamber 32, bolted to one side of the outer wall of the housing 1, and a valve is provided at the bottom of one side of the cleaning chamber 32.

[0034] In this embodiment, the exhaust assembly 2 and the cleaning module 3 constitute an optical marking device for high-precision sample positioning according to this application.

[0035] It should also be understood that the optical marker probe 11, fan 23, water pump 331, drive motor 341, vacuum pump, adjustment mechanism, condenser, filter, scrubber, activated carbon adsorption tower, catalytic combustion device, dust collector, and demister are all common knowledge in the field. They are only used and not modified, so the control methods and circuit connections will not be described in detail.

[0036] It should be noted that the chassis 1 is rectangular, the cleaning chamber 32 is made of stainless steel, which has good corrosion resistance and strength, the exhaust assembly 2 is used to exhaust the exhaust gas inside the chassis 1, and the cleaning module 3 is used to clean the sample container. The overall structure is compact and easy to operate and maintain.

[0037] In addition, in this embodiment, the user first places the biological sample to be monitored into the sample container, and then places the sample container with the biological sample on the fixing seat 12 inside the chassis 1. The sample container is adsorbed by the vacuum adsorption device located at the bottom of the fixing seat 12 inside the chassis 1. The user starts the vacuum pump (not shown in the figure), and the sample container is adsorbed through the vacuum pipe (not shown in the figure) and the vacuum suction cup (not shown in the figure). The chassis 1 door is closed. The user starts the optical labeling probe 11 on the top of the chassis 1 through the controller, and then adjusts the position of the optical labeling probe 11 for labeling through the adjustment mechanism (not shown in the figure). Before optical labeling of biological samples, biological samples need to be extracted and processed. When performing genomic analysis, proteomics and metabolomics analysis on blood, tissue and cell samples, chemical reagents such as chloroform, isopropanol, and phenol may be used. These reagents will generate volatile waste gas during the extraction process. When optically labeling biological samples, the generation of waste gas may be related to the label or reagent used, such as the volatile substances that may be released by fluorescent dyes or labels during the excitation process. These substances may volatilize during the optical marking process, generating waste gas. At this time, the user starts two sets of fans 23 through the controller to draw the waste gas inside the casing 1 from the gas collection hood 21 into the airflow duct 22. Then, the waste gas enters the external equipment condenser (not shown in the figure), filter (not shown in the figure), or scrubber (not shown in the figure) through the other end of the airflow duct 22 with the connecting flange 24. This is used to remove large particles, liquid organic matter, and impurities from the waste gas. Then, it enters the activated carbon adsorption tower (not shown in the figure) to adsorb volatile organic compounds and harmful substances such as ozone from the waste gas. The adsorbed waste gas may need to be further oxidized and decomposed by a catalytic combustion device (not shown in the figure). The waste gas after catalytic combustion is then deeply purified by a dust collector (not shown in the figure) or a demister (not shown in the figure) to ensure that fine particles are also removed. Finally, the purified waste gas is discharged into the atmosphere through an exhaust pipe (not shown in the figure) and a chimney (not shown in the figure). The emission standards must meet environmental protection requirements.

[0038] Specifically, the chassis 1 includes: an optical marking probe 11, which is disposed at the top inside the chassis 1; and a fixing base 12, which is disposed at the center inside the chassis 1.

[0039] In this embodiment, the fixing base 12 is made of metal, which has good stability and accuracy. The optical labeling probe 11 is used to mark the sample with high precision, and the fixing base 12 is used to fix the sample container to ensure the stability and accuracy of the labeling process.

[0040] Specifically, the exhaust assembly 2 includes: an airflow duct 22, which is located on the top of the casing 1 and has flanges at both ends connecting to the top of two sets of air collection hoods 21; a fan 23, which is located inside both ends of the airflow duct 22 and on the top of the two sets of air collection hoods 21; and a connecting flange 24, which is located at the end of the airflow duct 22 away from the fan 23 and is bolted to an external pipe.

[0041] As a preferred embodiment, the gas collection hood 21 and the airflow duct 22 are made of metal, which has good strength and airtightness. The fan 23 discharges the exhaust gas inside the casing 1 through the airflow duct 22 and the gas collection hood 21. The connecting flange 24 is used to connect external treatment equipment to ensure that the purification and emission of exhaust gas meet environmental protection requirements.

[0042] Example 2:

[0043] Based on Example 1, after labeling, the sample container containing the biological sample will have residual waste liquid. At this time, the user can slide the clamping seat 354 upward to open the two clamping blocks 355 on both sides and place the sample container on one side of the clamping seat 354. The two clamping blocks 355 on both sides clamp the sample container by the contraction force of two sets of compression springs 356. There is also a fixing block at the bottom of the clamping seat 354 to support the sample container. Then the user slides the clamping seat 354 downward to place the sample container inside the cleaning chamber 32. At this time, the user starts the water pump 331 through the controller. The water pump 331 pressurizes the cleaning fluid inside the water tank 31 to the first water pipe 3 through the pipe. 32. The cleaning solution then enters the second water pipe 333 through the first water pipe 332, and finally enters the two sets of hard water pipes 335 from the second water pipe 333, and is sprayed out from the spray head 336. At the same time, the user starts the drive motor 341 through the controller. The drive motor 341 drives the first bevel gear 342 to rotate. The first bevel gear 342 meshes with the second bevel gear 343 to rotate. The second bevel gear 343 drives the rotating disk 344 on the top of the rotary joint 334 to rotate. The rotating disk 344 drives the hard water pipe 335 to rotate and spray to clean the sample container. After cleaning, the user can open the valve on one side of the bottom of the cleaning chamber 32 to drain the wastewater.

[0044] Specifically, the spraying assembly 33 includes: a water pump 331, located at the bottom exterior of the casing 1 near the cleaning chamber 32, with one end connected to the outlet of the water tank 31; a first water pipe 332, with a flange connecting the end of the water pump 331 away from the water tank 31; a second water pipe 333, located at the bottom interior of the cleaning chamber 32, with a flange connecting the end of the first water pipe 332 away from the water pump 331; a rotary joint 334, rotatably located at the bottom interior of the cleaning chamber 32, with the second water pipe 333 extending through the rotary joint 334 into the cleaning chamber 32; two sets of hard water pipes 335, rotatably located inside the cleaning chamber 32, with their bottoms connected to the flanges at the top of the second water pipes 333; and spray heads 336, located on the two sets of hard water pipes 335, arranged vertically in three sets.

[0045] With this setup, the hard water pipe 335 is made of stainless steel and plastic, which has good corrosion resistance and spraying effect. The water pump 331 delivers the cleaning solution in the water tank 31 to the hard water pipe 335 through the first water pipe 332 and the second water pipe 333. The spray head 336 sprays the cleaning solution onto the sample container. The rotating design of the rotary joint 334 and the hard water pipe 335 enables all-round cleaning.

[0046] Specifically, the rotating assembly 34 includes: a drive motor 341, disposed at the bottom of the cleaning chamber 32; a first bevel gear 342, rotating inside the bottom of the cleaning chamber 32, with one end keyed to the output shaft of the drive motor 341; a second bevel gear 343, rotating inside the bottom of the cleaning chamber 32, meshing with the first bevel gear 342, and keyed to the rotary joint 334; and a rotating disk 344, rotating inside the cleaning chamber 32, with the top of the second water pipe 333 disposed inside the rotating disk 344, and the bottom of the second water pipe 333 welded to the top of the rotary joint 334.

[0047] The drive motor 341 is a DC motor, the first bevel gear 342 and the second bevel gear 343 are both made of high-strength alloy steel, and the rotating disk 344 is made of stainless steel. The drive motor 341 drives the rotary joint 334 and the rotating disk 344 to rotate via the first bevel gear 342 and the second bevel gear 343, thereby achieving the rotational spraying of the spray head 336 and improving the cleaning effect. The high-strength alloy steel gears ensure the stability and durability of the transmission, while the stainless steel rotating disk 344 has good corrosion resistance and strength, making it suitable for various cleaning environments.

[0048] Specifically, the clamping assembly 35 includes: a support column 351 disposed inside the cleaning chamber 32; a slide groove 352 formed inside the support column 351; a slider 353 embedded and sliding in the slide groove 352; a clamping seat 354 disposed on top of the slider 353; two sets of clamping blocks 355 disposed and sliding on both sides of the clamping seat 354; and two sets of compression springs 356 disposed and located inside the clamping seat 354, with one end welded to the end of the clamping block 355 near the inside of the clamping seat 354.

[0049] In this embodiment, the support column 351 is made of aluminum alloy, which is lightweight and high-strength. The slide groove 352 is a rectangular groove. The slider 353 is made of polyoxymethylene (POM), which has good wear resistance and self-lubrication. The clamping seat 354 is made of stainless steel, which has good corrosion resistance and strength. The clamping block 355 is made of POM, which has good wear resistance and self-lubrication. The compression spring 356 is made of stainless steel, which has good elasticity and corrosion resistance. The clamping seat 354 slides up and down within the slide groove 352 of the support column 351 via the slider 353. The clamping block 355 clamps the sample container under the action of the compression spring 356, thus fixing and cleaning the sample container. After cleaning, the sample container can be removed by sliding the clamping seat 354. The aluminum alloy support column 351 and the stainless steel clamping seat 354 provide stable support and corrosion resistance. The POM slider 353 and the clamping block 355 ensure good wear resistance and self-lubrication. The stainless steel compression spring 356 provides reliable elasticity and corrosion resistance.

[0050] In actual use, the user first places the biological sample to be monitored into the sample container, then places the sample container with the biological sample on the fixing seat 12 inside the chassis 1. The sample container is then held in place by the vacuum adsorption device located at the bottom of the fixing seat 12 inside the chassis 1. The user starts the vacuum pump, and the sample container is held in place by the vacuum pipe and vacuum suction cup. The chassis 1 door is then closed. The user starts the optical labeling probe 11 on the top of the chassis 1 through the controller, and then adjusts the position of the optical labeling probe 11 through the adjustment mechanism for labeling. Before optical labeling of biological samples, the biological samples need to be extracted and processed. When performing genomics, proteomics, and metabolomics analysis on blood, tissue, and cell samples, chemical reagents such as chloroform, isopropanol, and phenol may be used. These reagents will generate volatile waste gases during the extraction process. When optically labeling biological samples, the generation of waste gases may be related to the labeling agent used. The exhaust gas may be related to reagents, such as volatile substances that may be released during the excitation process of fluorescent dyes or markers. These substances may volatilize during optical marking, generating exhaust gas. In this case, the user starts two sets of fans 23 through the controller to draw the exhaust gas inside the casing 1 from the gas collection hood 21 into the airflow duct 22. Then, it enters the external equipment condenser, filter or scrubber through the airflow duct 22 with the connecting flange 24 at the other end to remove large particles, liquid organic matter and impurities from the exhaust gas. Then it enters the activated carbon adsorption tower to adsorb volatile organic compounds and harmful substances such as ozone from the exhaust gas. The adsorbed exhaust gas may need to be further oxidized and decomposed by a catalytic combustion device. The exhaust gas after catalytic combustion is deeply purified by a dust collector or demister to ensure that fine particles are also removed. Finally, the purified exhaust gas is discharged into the atmosphere through the emission pipe and chimney, and the emission standards must meet the environmental protection requirements.

[0051] After labeling, the sample container containing the biological sample will have residual waste liquid. At this time, the user can slide the clamping seat 354 upwards to open the two clamping blocks 355 on both sides and place the sample container on one side of the clamping seat 354. The two clamping blocks 355 on both sides clamp the sample container by the contraction force of two sets of compression springs 356. There is also a fixing block at the bottom of the clamping seat 354 to support the sample container. Then, the user slides the clamping seat 354 downwards to place the sample container inside the cleaning chamber 32. At this time, the user starts the water pump 331 through the controller. The water pump 331 pressurizes the cleaning solution inside the water tank 31 to the first water pipe 332 through the pipe to clean the sample container. The liquid then enters the second water pipe 333 through the first water pipe 332, and finally enters two sets of hard water pipes 335 from the second water pipe 333, and is sprayed out from the spray head 336. At the same time, the user starts the drive motor 341 through the controller. The drive motor 341 drives the first bevel gear 342 to rotate. The first bevel gear 342 meshes with the second bevel gear 343 to rotate. The second bevel gear 343 drives the rotating disk 344 on the top of the rotary joint 334 to rotate. The rotating disk 344 drives the hard water pipe 335 to rotate and spray to clean the sample container. After cleaning, the user can open the valve on one side of the bottom of the cleaning chamber 32 to discharge the wastewater.

[0052] It should be noted that all electrical components mentioned in this article are connected to an external main controller and 220V AC mains power. The main controller can be a conventional known device that can be controlled by a computer or other means. The detailed description of known functions and known components is omitted in the specific implementation of this disclosure. In order to ensure the compatibility of the device, the operating methods used are consistent with the parameters of commercially available instruments.

[0053] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An optical marking device for high precision sample positioning, characterized by: Includes chassis (1); The exhaust assembly (2) is located on the top of the chassis (1), including two sets of air collection hoods (21) located on both sides of the top of the chassis (1); The cleaning module (3) is located on the outer wall of one side of the chassis (1), including a water tank (31) located at the bottom of the inside of the chassis (1), and also includes a cleaning chamber (32) bolted to the outer wall of one side of the chassis (1), and a valve is provided at the bottom of one side of the cleaning chamber (32).

2. An optical marking device for high precision sample positioning according to claim 1, characterized in that: The chassis (1) includes: an optical marking probe (11) disposed at the top inside the chassis (1); The mounting base (12) is located at the center of the inside of the chassis (1).

3. An optical marking device for high precision sample positioning according to claim 1, characterized in that: The exhaust assembly (2) includes: an airflow duct (22) disposed on the top of the chassis (1) and with flanges at both ends connected to the top of two sets of air collection hoods (21); The fan (23) is installed inside both ends of the airflow duct (22) and is located on top of the two sets of air collection hoods (21); The connecting flange (24) is located at the end of the airflow duct (22) away from the fan (23) and is bolted to the external duct.

4. An optical marking device for high precision sample positioning according to claim 1, characterized in that: The cleaning module (3) includes a spraying assembly (33), which is located on the outside of the chassis (1) near the cleaning chamber (32); A rotating component (34) is located at the bottom of the cleaning chamber (32); The clamping assembly (35) is located inside the cleaning chamber (32).

5. An optical marking device for high precision sample positioning according to claim 4, characterized in that: The spraying assembly (33) includes: a water pump (331), which is located at the bottom of the outer side of the casing (1) near the cleaning chamber (32), and one end of the pump is connected to the outlet of the water tank (31); The first water pipe (332) is connected to the end of the water pump (331) away from the water tank (31) by a flange; The second water pipe (333) is located at the bottom of the cleaning chamber (32) and is connected to the flange at the end of the first water pipe (332) away from the water pump (331); A rotary joint (334) is rotatably disposed at the bottom of the cleaning chamber (32), and a second water pipe (333) extends through the rotary joint (334) into the cleaning chamber (32); Two sets of hard water pipes (335) are provided and rotate inside the cleaning chamber (32), with the bottom connected to the top flange of the second water pipe (333); Sprinkler heads (336) are installed on two sets of hard water pipes (335) and arranged vertically in three sets.

6. An optical marking device for high precision sample positioning according to claim 4, characterized in that: The rotating assembly (34) includes a drive motor (341) disposed at the bottom of the cleaning chamber (32); The first bevel gear (342) rotates inside the bottom of the cleaning chamber (32), and one end is keyed to the output shaft of the drive motor (341); The second bevel gear (343) rotates inside the bottom of the cleaning chamber (32) and meshes with the first bevel gear (342) and is keyed to the rotary joint (334); The rotating disk (344) rotates inside the cleaning chamber (32), and the top of the second water pipe (333) is located inside the rotating disk (344), and the bottom is welded to the top of the rotary joint (334).

7. An optical marking device for high precision sample positioning according to claim 4, characterized in that: The clamping assembly (35) includes: a support column (351) disposed inside the cleaning chamber (32); A groove (352) is formed inside the support column (351); The slider (353) is embedded and slides within the groove (352); A clamping seat (354) is provided on top of the slider (353); Two sets of clamping blocks (355) are provided and slide on both sides of the clamping seat (354); Two sets of compression springs (356) are provided and located inside the clamping seat (354), with one end welded to the end of the clamping block (355) near the inside of the clamping seat (354).

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