An automatic continuous detection system for environmental tritium and a detection method thereof

Abstract

The application discloses an automatic continuous detection system for environmental tritium and a detection method thereof, characterized in that the automatic continuous detection system further comprises an up-down feeding device installed on one side of the automatic detection equipment and used for automatically filling sample water and automatically feeding and discharging the filled sample water to the automatic detection equipment; the up-down feeding device comprises a reagent bottle feeding device used for automatically feeding reagent bottles, a mechanical hand and a material collecting device used for storing the reagent bottles after detection is completed. The application automatically prepares sample water, automatically feeds reagent bottles, automatically feeds sample water and scintillation liquid into the reagent bottles according to a proportion, shakes and weighs the reagent bottles, feeds the reagent bottles into the automatic detection equipment through the mechanical hand for detection, stores the reagent bottles in a collecting drawer after detection is completed, and collects the reagent bottles. An operator only needs to regularly add empty reagent bottles to a storage box and take out the reagent bottles collected in the collecting drawer, and the operation does not need to manually control the equipment to run, so that the radiation harm to the human body can be reduced.

Description

Technical Field

[0001] This invention relates to automatic continuous detection of environmental tritium, specifically to an automatic continuous detection system and method for environmental tritium. Background Technology

[0002] Tritium is a radioactive substance with a half-life of 12.6 years. Most of the tritium in the air eventually forms tritium water vapor, which enters the water cycle along with ordinary water, thus easily exposing humans to radiation. Monitoring the tritium content in water and air is of great importance internationally in environmental protection. Among existing tritium monitoring methods, indirect measurement is significantly superior to other methods. The principle involves first preparing an air tritium water sample using the air condensation method, bringing the sample back to the laboratory, purifying the tritium sample through artificial distillation, then quantitatively mixing the water sample and scintillation fluid in a specific ratio into sample vials, and finally placing each sample vial into the instrument for analysis.

[0003] Existing detection instruments require manual addition of water samples and scintillation fluid to sample vials before placing them into the instrument for each test. This method is inefficient, requires manual loading and unloading for each test, and poses a radiation hazard to humans when the tritium concentration is high. To improve work efficiency, the automation level of the detection equipment, and reduce harm to personnel, an automatic continuous detection system and method for environmental tritium are proposed. Summary of the Invention

[0004] The purpose of this invention is to solve the above problems by proposing an automatic continuous detection system and method for environmental tritium.

[0005] To achieve the above objectives, the present invention provides an automatic continuous detection system for environmental tritium, comprising a frame, an automatic detection device for detecting sample water disposed within the frame, and a control system for controlling the detection system; the automatic detection device is an ultra-low background liquid scintillation spectrometer; characterized in that it further comprises a loading and unloading device installed on one side of the automatic detection device for automatically filling sample water and automatically loading and unloading the filled sample water into the automatic detection device; the loading and unloading device includes a reagent bottle mounting device installed on the frame for storing reagent bottles and for automatically loading reagent bottles. The device includes a feeding unit, a robotic arm, and a receiver for storing reagent bottles after testing. The frame is also equipped with a clamp for clamping the reagent bottles to facilitate the robotic arm in removing and installing the bottle caps, a shaker for mixing the liquid inside the reagent bottles, and a weighing device for weighing the reagent bottles. The reagent bottle feeding unit includes a storage box for storing reagent bottles, a guide structure located inside the storage box to guide the movement of the reagent bottles, a feeding rack connected to the guide structure for feeding the reagent bottles, and a feeder installed on the feeding rack to transport the reagent bottles from the guide structure to the feeding rack.

[0006] More preferably, the shaker is a vibrating shaker mounted on a frame, and the vibrating shaker is equipped with a protective frame to limit the reagent bottle and prevent it from falling.

[0007] More preferably, the clamping device includes a cylinder mounted on a frame, grippers mounted on the cylinder for clamping reagent bottles, and a bracket mounted on the frame for supporting the cylinder; the bracket is also equipped with a plurality of limiting blocks for limiting the position of the reagent bottles, including at least a limiting block located in the middle of the grippers and close to the cylinder, or a limiting block located on both sides of the grippers and a limiting block located in the middle of the grippers and close to the cylinder; the bracket is provided with a plurality of support rods and a base plate fixedly connected to the support rods, a cylinder support plate is movably mounted on the support rods, and a spring is fitted on the support rods, the spring being located between the cylinder support plate and the base plate; the base plate is also equipped with a limiting rod for limiting the position of the cylinder support plate, one end of the limiting rod passing through the cylinder support plate and being fixedly connected to the base plate.

[0008] More preferably, the frame is also provided with a scintillation liquid raw material tank and several placement racks, on which injection sleeves are placed. One injection sleeve is connected to the scintillation liquid raw material tank through a pipeline, and a metering pump is connected to the pipeline. The other injection sleeve is connected to the sample water pretreatment device through a pipeline. The frame is also equipped with a placement platform for placing reagent bottle caps.

[0009] Further preferably, the device also includes a sample water pretreatment unit mounted on a frame; the sample water pretreatment unit includes a chassis, an evaporation chamber installed inside the chassis, a condensation chamber installed inside the chassis and connected to the evaporation chamber via a pipeline, a collection chamber connected to the condensation chamber via a pipeline, a drug supply mechanism installed inside the chassis for automatically and quantitatively supplying drugs to the evaporation chamber, and a cover plate mechanism installed inside the chassis for sealing the top channel of the evaporation chamber; the drug supply mechanism includes a quantitative drug dispenser installed inside the chassis and above the evaporation chamber, and a drug container installed on the quantitative drug dispenser; the quantitative drug dispenser includes a housing installed on the chassis, a motor installed inside the housing, a drug dispensing valve block installed on the housing, and a discharge head movably installed inside the drug dispensing valve block and driven by the motor; the drug dispensing valve block is provided with a drug dispensing channel, and the drug container is installed on the drug dispensing valve block and communicates with the drug dispensing channel; the discharge head is provided with a quantitative groove corresponding to the position of the drug dispensing channel.

[0010] More preferably, the cover plate mechanism includes a motor frame mounted on the chassis, a second motor mounted on the motor frame, a drive block connected to the output shaft of the second motor, a drive plate mounted on the drive block, and a cover plate mounted on the drive plate for sealing the top channel of the evaporation chamber; an electric heating coil is wound and installed on the outer side of the evaporation chamber; the evaporation chamber is provided with several inlets and drain outlets; the condensation chamber is provided with a spiral cooling pipe connected to the pipeline for improving the cooling effect, and the condensation chamber is also provided with a coolant inlet and a coolant outlet; the liquid collection chamber is also equipped with a conductivity sensor for detecting sample water, and the liquid collection chamber is also connected to a metering pump through a pipeline.

[0011] Further preferably, it also includes a sample collection device mounted on a rack; the sample collection device includes a collection chamber mounted on the rack and connected to the sample water pretreatment device via a pipeline, and a collection cylinder mounted on the collection chamber.

[0012] More preferably, the guiding structure includes a guide frame installed in the storage box, a motor bracket installed in the storage box, a motor three installed on the motor bracket, and a rotating component connected to the motor three for moving reagent bottles in the storage box to the guide frame; the feeding rack is installed on the storage box and communicates with the guide frame, arranged in an arc upward; the feeder includes a motor four installed on the feeding rack, a feeding pusher connected to the motor four, and a blocking mechanism installed on the guide frame and the feeding pusher for blocking the reagent bottles arranged on the guide frame; the receiving device includes a receiving drawer movably installed in the frame, an arc-shaped guide surface installed in the receiving drawer for guiding the movement of reagent bottles in the receiving drawer and facilitating the arrangement of reagent bottles in an arc, and a pushing mechanism installed on the receiving drawer for pushing the reagent bottles to move; the pushing mechanism includes a pusher installed on the frame and a pushing block installed on the pusher; the pusher can be a cylinder or an electric push rod.

[0013] More preferably, the material-stopping mechanism includes a material-stopping block movably mounted on a guide frame via a pin, a torsion spring movably mounted on the pin and connected to the material-stopping block and the guide frame for driving the material-stopping block to stop the reagent bottle, a drive rod mounted on the material-stopping block, a drive wheel mounted on the drive rod, and a material-discharging block mounted on a feeding pusher and cooperating with the drive wheel to drive the material-stopping block to flip and discharge the reagent bottle; the side of the material-discharging block that contacts and cooperates with the drive wheel is provided as a conical surface.

[0014] A detection method for an automatic continuous environmental tritium detection system, characterized in that: the detection method is as follows: a. Reagent bottle preparation: The operator stores several reagent bottles in a storage box for later use; b. Sample water pretreatment: After being prepared into sample water by the pretreatment device, the sample water is temporarily stored in the collection chamber for later use; c. Reagent bottle loading: The reagent bottle is pushed to the loading position by the feeder and then picked up by the robot and placed on the clamp. d. After the clamping device clamps the reagent bottle, the robotic arm unscrews the bottle cap and places it on the placement stage. Then, the robotic arm moves the two injection sleeves to the reagent bottle in sequence and uses a metering pump to inject a fixed amount of scintillation solution and sample water into the reagent bottle. e. After the robotic arm retrieves the bottle cap, it screws it onto the reagent bottle, and then the clamp releases the reagent bottle; f. After the robotic arm places the reagent bottle onto the shaker, it starts the vibrating shaker to perform timed shaking. g. After shaking, the robotic arm removes the reagent bottle and places it on the weighing device for weighing. The weighing data is then transmitted to the control system. h. Then the robotic arm places the weighed reagent bottles into the testing equipment for testing. After the testing is completed, the reagent bottles are placed into the receiving drawer to wait for the next testing to begin.

[0015] This invention utilizes a sample water pretreatment device, an automatic detection device, a control system, and an automatic loading and unloading device to automatically prepare sample water, automatically load reagent bottles, automatically add sample water and scintillation liquid into the reagent bottles in proportion, shake and weigh them, and then send them to the automatic detection device for testing by a robotic arm. After testing, the reagent bottles are placed in the collection drawer for collection. Operators only need to periodically add empty reagent bottles to the storage box and take out a number of reagent bottles collected in the collection drawer. No manual operation is required, the degree of automation is high, and radiation damage to the human body can be reduced. With the addition and removal of the loading and unloading device, operators only need to periodically stack the reagent bottles to be used in the storage box and take out the reagent bottles to be used and stacked in the receiving drawer. There is no need to manually load and unload the testing equipment one by one, which improves the degree of automation and efficiency and can meet the needs of fully automatic testing equipment. By setting up a quantitative dispensing device, the motor drives the dispensing head to rotate, which in turn drives the quantitative tank to rotate. During the rotation of the quantitative tank, the automatic dispensing and addition of medicine are completed, thus automatically completing the quantitative dispensing work without manual operation. This is suitable for continuous detection in automatic testing equipment. Attached Figure Description

[0016] Appendix Figure 1 This is a schematic diagram of the structure of the present invention; Appendix Figure 2 This is a partial structural diagram of the sample acquisition device in this invention. Appendix Figure 3 This is a schematic diagram of the loading and unloading device in this invention; Appendix Figure 4This is a schematic diagram of the pre-processing device in this invention; Appendix Figure 5 This is a partial cross-sectional structural diagram of the pre-processing device in this invention; Appendix Figure 6 This is a partial cross-sectional structural diagram of the pre-processing device in this invention; Appendix Figure 7 This is a partial structural schematic diagram of the pre-processing device in this invention; Appendix Figure 8 This is a partial structural schematic diagram of the loading and unloading device in this invention; Appendix Figure 9 This is a schematic diagram of the clamping device in this invention; Appendix Figure 10 This is a partial structural diagram of the reagent bottle feeding device in this invention; Appendix Figure 11 This is a partial structural diagram of the reagent bottle feeding device in this invention from another perspective; Appendix Figure 12 This is a partial structural schematic diagram of the reagent bottle feeding device in this invention; Appendix Figure 13 This is a partial structural schematic diagram of the reagent bottle feeding device in this invention; Appendix Figure 14 This is a schematic diagram of the material blocking mechanism in this invention; Appendix Figure 15 This is a schematic diagram of the material receiving device in this invention.

[0017] Legend: 1. Pretreatment unit; 11. Chassis; 12. Evaporation chamber; 121. Electric heating coil; 122. Inlet; 123. Drain; 13. Condensation chamber; 131. Spiral cooling pipe; 132. Coolant inlet; 133. Coolant outlet; 14. Collection chamber; 141. Conductivity sensor; 145. Metering pump; 15. Drug dispensing mechanism; 151. Quantitative drug dispenser; 152. Drug compartment; 153. Outer casing; 154. Motor; 155. 156. Discharge valve block; 157. Discharge head; 158. Discharge channel; 16. Metering tank; 17. Cover plate mechanism; 18. Motor frame; 19. Motor II; 10. Drive block; 10. Drive plate; 11. Cover plate; 2. Automatic detection equipment; 3. Control system; 4. Loading and unloading device; 41. Frame; 411. Placement rack; 412. Injection sleeve; 413. Placement platform; 42. Reagent bottle loading device; 421. Storage box; 43. Robot arm; 44. Material receiver; 441. Material receiving drawer; 442. Arc-shaped guide surface; 443. Pushing mechanism; 444. Pusher; 445. Pushing block; 45. Clamping device; 451. Limiting frame; 452. Clamping cylinder; 453. Gripper; 454. Limiting block; 455. Support rod; 456. Base plate; 457. Cylinder support plate; 458. Spring; 459. Limiting rod; 46. Shaker; 461. Vibrating shaker; 462. Protective frame; 47. 48. Weighing device; 481. Guiding structure; 482. Feeding rack; 483. Feeder; 484. Guide frame; 485. Motor three; 486. Rotating component; 487. Motor four; 488. Feeding pusher; 49. Material blocking mechanism; 491. Material blocking block; 492. Torsion spring; 493. Drive rod; 494. Drive wheel; 495. Discharge block; 5. Scintillation liquid raw material tank; 6. Sample collection equipment; 61. Collection chamber; 62. Collection cylinder. Implementation

[0018] The following description, in conjunction with the accompanying drawings, further illustrates the automatic continuous environmental tritium detection system and method described in this invention.

[0019] See Figures 1-15As shown, an automatic continuous detection system for environmental tritium includes a frame 41, a sample water pretreatment device 1 mounted on the frame 41, an automatic detection device 2 for detecting the sample water, a sample collection device 6 mounted on the frame 41, and a control system 3 for controlling the detection system. The automatic detection device 2 is an ultra-low background liquid scintillation spectrometer. It is characterized by further including a loading / unloading device 4 mounted on one side of the automatic detection device 2 for automatically filling the sample water and automatically loading / unloading the filled sample water into the automatic detection device 2. The loading / unloading device 4 includes a reagent bottle loading device 42 mounted on the frame 41 for storing and automatically loading reagent bottles, a robotic arm 43, and a receiver 44 for storing reagent bottles after testing. The frame 41 is also equipped with a clamping device 45 for clamping reagent bottles to facilitate the robotic arm 43 in removing and installing bottle caps, a shaker 46 for shaking the liquid inside the reagent bottles, and a weighing device 47 for weighing the reagent bottles. By using the pretreatment device 1, automatic detection device 2, control system 3, and automatic loading and unloading device 4 for sample water, sample water is automatically prepared, reagent bottles are automatically loaded, and sample water and scintillation liquid are automatically added to the reagent bottles in proportion, then shaken and weighed. Then, the sample water is sent to the automatic detection device 2 for detection by the robotic arm 43. After the detection is completed, the reagent bottles are placed in the receiving drawer 441 for collection. The operator only needs to add empty reagent bottles to the storage box 421 and take out some reagent bottles collected in the receiving drawer 441 periodically. No manual operation is required, the degree of automation is high, and the radiation damage to the human body can be reduced. With the addition and removal of the loading and unloading device 4, the operator only needs to periodically stack the reagent bottles to be used in the storage box 421 and take out the reagent bottles to be used and stacked in the receiving drawer 441. There is no need to manually load and unload the testing equipment one by one, which improves the degree of automation and efficiency and can meet the needs of the fully automatic testing equipment 2. The sample collection device 6 is mounted on the frame 41 and is connected to the sample water pretreatment device via a pipeline. The collection chamber 61 and the collection cylinder 62 are mounted on the collection chamber. The collected water is transported to the collection chamber via the collection cylinder, and the collection chamber transports the water to the sample water pretreatment device via a pipeline for treatment.

[0020] Furthermore, the shaker 46 is a vibrating shaker 461 mounted on the frame 41, and the vibrating shaker 461 is equipped with a protective frame 462 to limit the reagent bottle and prevent it from falling. By using the shaker 46, the reagent bottle is shaken by the vibrating shaker 461 to mix the scintillation liquid and sample water in the reagent bottle, thereby improving uniformity and detection accuracy. The protective frame 462 protects the reagent bottle and prevents it from falling during vibration.

[0021] Furthermore, the clamping device 45 includes a cylinder 452 mounted on the frame 41, grippers 453 mounted on the cylinder 452 for clamping reagent bottles, and a bracket 451 mounted on the frame 41 for supporting the cylinder 452; the bracket 451 is also equipped with a plurality of limiting blocks 454 for limiting the position of the reagent bottles, including at least a limiting block 454 located in the middle of the grippers and close to the cylinder 452, or a limiting block 454 located on both sides of the grippers and a limiting block 454 located in the middle of the grippers and close to the cylinder 452. Limiting block 454; the bracket 451 is provided with a plurality of support rods 455 and a base plate 456 fixedly connected to the support rods 455. A cylinder support plate 457 is movably installed on the support rods 455. A spring 458 is fitted on the support rods 455 and is located between the cylinder support plate 457 and the base plate 456. A limiting rod 459 is also installed on the base plate 456 to limit the position of the cylinder support plate 457. One end of the limiting rod 459 passes through the cylinder support plate 457 and is fixedly connected to the base plate 456. The limiting block 454 provides support for the reagent bottle while simultaneously limiting its position in conjunction with the gripper 453. The clamping cylinder 452 is used to drive the gripper 453 to clamp the reagent bottle. After clamping the reagent bottle, it is convenient for the robot arm 43 to unscrew the bottle cap. The robot arm 43 is a rotatable robot arm. A spring 458 is installed between the cylinder support plate 457 and the base plate 456. The cylinder 452 is mounted on the cylinder support plate 457, allowing the cylinder 452 to move up and down to a certain extent via the spring 458. When the robotic arm 43 contacts the bottle cap, it generates a certain downward pressure, which is applied to the cylinder 452. The cylinder 452 is buffered by the spring 458 to prevent the robotic arm 43 from making hard contact with the reagent bottle and causing a collision. The position of the cylinder support plate 457 on the support rod 455 is limited by the setting of the limiting rod 459.

[0022] Furthermore, the frame 41 is also equipped with a scintillation liquid raw material tank 5 and several placement racks 411. An injection sleeve 412 is placed on the placement rack 411. One injection sleeve 412 is connected to the scintillation liquid raw material tank 5 through a pipeline, and a metering pump is connected to the pipeline. The other injection sleeve 412 is connected to the sample water pretreatment device 1 through a pipeline. The frame 41 is also equipped with a placement platform 413 for placing reagent bottle caps. With the setting of the injection sleeve 412, after the robotic arm 43 grabs the injection sleeve 412 and places it at the mouth of the reagent bottle, the metering pump 145 injects a certain amount of scintillation liquid and sample water into the reagent bottle.

[0023] Furthermore, the sample water pretreatment device 1 includes a casing 11, an evaporation chamber 12 installed inside the casing 11, a condensation chamber 13 installed inside the casing 11 and connected to the evaporation chamber 12 via a pipeline, a collection chamber 14 connected to the condensation chamber 13 via a pipeline, a drug supply mechanism 15 installed inside the casing 11 for automatically and quantitatively supplying drugs to the evaporation chamber 12, and a cover plate mechanism 16 installed inside the casing 11 for sealing the top channel of the evaporation chamber 12; the drug supply mechanism 15 includes a quantitative drug dispenser 151 installed inside the casing 11 and above the evaporation chamber 12, and a cover plate mechanism 16 installed inside the casing 11 for sealing the top channel of the evaporation chamber 12. The dispensing device 151 includes a medicine chamber 152; the dispensing device 151 comprises a housing 153 mounted on a chassis 11, a motor 154 mounted inside the housing 153, a dispensing valve block 155 mounted on the housing 153, and a dispensing head 156 movably mounted inside the dispensing valve block 155 and drivenly connected to the motor 154; the dispensing valve block 155 is provided with a dispensing channel 157, the medicine chamber 152 is mounted on the dispensing valve block 155 and communicates with the dispensing channel 157; the dispensing head 156 is provided with a dispensing groove 158 corresponding to the position of the dispensing channel 157. By setting up the quantitative dispensing device 151, the motor 154 drives the dispensing head 156 to rotate, which in turn drives the quantitative tank 158 to rotate. During the rotation of the quantitative tank 158, the automatic dispensing and addition of medicine are completed, thereby automatically completing the quantitative dispensing work. By setting up the dispensing channel 157, the medicine in the medicine bin 152 moves downward into the dispensing channel 157 by its own gravity. When the metering trough 158 rotates to connect with the dispensing channel 157, the medicine powder falls into the metering trough 158 by its own gravity and fills the metering trough 158. As the metering trough 158 rotates, the medicine powder in the metering trough 158 moves accordingly. When adding medicine, it is only necessary to control the number of rotations of the dispensing head 156 according to the amount of medicine added and the amount of medicine stored in the metering trough 158.

[0024] Furthermore, the cover plate mechanism 16 includes a motor frame 161 mounted on the chassis 11, a second motor 162 mounted on the motor frame 161, a drive block 163 connected to the output shaft of the second motor 162, a drive plate 164 mounted on the drive block 163, and a cover plate 165 mounted on the drive plate 164 for sealing the top channel of the evaporation chamber 12. With the cover plate mechanism 16, when it is necessary to add medicine, the motor 162 drives the cover plate 165 to move and open the top channel of the evaporation chamber 12, so that the medicine can be put into the evaporation chamber 12. When the evaporation chamber 12 is evaporating, the motor 162 drives the cover plate 165 to move to the top channel of the evaporation chamber 12 to block the top channel and prevent the steam generated during evaporation from flowing out of the top channel.

[0025] Furthermore, an electric heating coil 121 is wound around the outside of the evaporation chamber 12; the evaporation chamber 12 is provided with several inlets 122 and drain outlets 123; the condensation chamber 13 is provided with a spiral cooling pipe 131 connected to the pipeline to improve the cooling effect, and the condensation chamber 13 is also provided with a coolant inlet 132 and a coolant outlet 133; the liquid collection chamber 14 is also equipped with a conductivity sensor 141 for detecting sample water, and the liquid collection chamber 14 is also connected to a metering pump 145 through a pipeline; The electric heating coil 121 is used to heat the evaporation chamber 12 so that the water mixed with the medicine powder in the evaporation chamber 12 evaporates. The inlet 122 is used to connect the water inlet pipe or to the liquid collection chamber through a pipeline to return the liquid in the liquid collection chamber to the evaporation chamber 12 for re-evaporation; By installing a spiral cooling pipe 131 in the condensing chamber 13, the heat exchange time between steam and cooling water is increased, thereby improving the heat exchange and condensation effect. The coolant inlet 132 and coolant outlet 133 are connected to fans for heat dissipation of the cooling water. After the cooling water is cooled by the fans, it can be pumped into the condensing chamber 13 to form a circulation, thus saving water resources. The conductivity sensor 141 is used to detect the conductivity of the sample water in the collection chamber 14. For unqualified sample water, it is pumped back to the evaporation chamber 12 for re-evaporation or the amount of reagent is increased and then re-evaporated. The metering pump 145 is used to quantitatively pump the sample water in the collection chamber 14 to the automatic detection equipment for detection.

[0026] Furthermore, the reagent bottle feeding device 42 includes a storage box 421 for storing reagent bottles, a guide structure 48 disposed within the storage box 421 to guide the movement of reagent bottles within the storage box 421, a feeding rack 481 connected to the guide structure 48 for feeding reagent bottles, and a feeder 482 mounted on the feeding rack 481 for conveying reagent bottles from the guide structure 48 to the feeding rack 481; the guide structure 48 includes a guide frame 483 installed within the storage box 421, a motor bracket 484 installed within the storage box 421, a motor 485 mounted on the motor bracket 484, and a rotating component 486 connected to the motor 485 for moving reagent bottles within the storage box 421 to the guide frame 483; the feeding rack 481 is mounted on the storage box 421 and communicates with the guide frame 483 in an arc shape. The upper part is configured as follows: The feeder 482 includes a motor 487 mounted on the feed rack 481, a feed pusher 488 connected to the motor 487, and a blocking mechanism 49 mounted on the guide frame 483 and the feed pusher 488 for blocking the position of reagent bottles arranged on the guide frame 483; The receiving device 44 includes a receiving drawer 441 movably mounted in the frame 41, an arc-shaped guide surface 442 mounted in the receiving drawer 441 to guide the movement of reagent bottles in the receiving drawer 441 and facilitate the arrangement of reagent bottles in an arc shape, and a pushing mechanism 443 mounted on the receiving drawer 441 for pushing the reagent bottles to move; The pushing mechanism 443 includes a pusher 444 mounted on the frame 41 and a pusher block 445 mounted on the pusher 444; The pusher 444 can be a cylinder or an electric push rod. The guide frame 483 guides and limits the arrangement of reagent bottles stacked in the storage box 421; the motor 485 drives the rotating part 486 to rotate, which in turn causes the reagent bottles on the rotating part 486 to move with the rotating part 486, thereby moving the reagent bottles in the storage box 421 to the guide frame 483 for arrangement and waiting for loading. Motor 487 drives the feeding pusher 488 to rotate, which in turn moves the reagent bottle in the feeding position upward along the feeding rack 481 to wait for the robot arm 43 to pick it up. With the setting of the blocking mechanism 49, when the feeder 482 feeds the reagent bottle, the blocking mechanism 49 automatically blocks the reagent bottle arranged on the guide rack 483 to prevent it from moving to the feeding position and jamming the feeding pusher 488, thus preventing it from being used normally. At the same time, after the feeding pusher 488 completes the feeding and resets, the blocking mechanism 49 is automatically opened, so that the reagent bottle arranged on the guide rack 483 automatically moves to the feeding position to wait for feeding. By setting an arc-shaped guide surface 442 inside the receiving drawer 441, the reagent bottles pushed into the receiving drawer 441 are guided by the arc-shaped guide surface 442, so that the reagent bottles piled in the receiving drawer 441 are automatically and neatly arranged inside the receiving drawer 441. After the robotic arm 43 places the reagent bottle into the receiving drawer 441, it pushes the push block 445 through the pusher 444. The push block 445 pushes the reagent bottle forward one station, and at the same time pushes the reagent bottles arranged in front to move forward one station, so that the reagent bottles arranged in the receiving drawer 441 move forward automatically.

[0027] Furthermore, the material blocking mechanism 49 includes a material blocking block 491 movably mounted on the guide frame 483 via a pin, a torsion spring 492 movably mounted on the pin and connected to the material blocking block 491 and the guide frame 483 for driving the material blocking block 491 to block the reagent bottle, a drive rod 493 mounted on the material blocking block 491, a drive wheel 494 mounted on the drive rod 493, and a material dispensing block 495 mounted on the feeding pusher 488 and cooperating with the drive wheel 494 to drive the material blocking block 491 to flip and dispensing the reagent bottle; the side of the material dispensing block 495 that contacts and cooperates with the drive wheel 494 is provided as a conical surface; By using the torsion spring 492, the stop block 491 is driven downward by the restoring force of the torsion spring 492 to block the reagent bottles arranged on the feeding rack 481, preventing the reagent bottles from moving to the feeding position during the feeding process. At the same time, by using the release block 495, drive wheel 494 and drive rod, and setting the side of the release block 495 that contacts the drive wheel 494 as a conical surface, when the feeding pusher 488 pushes the reagent bottles to feed, it drives the release block 495 to move. After the drive wheel 494 moves along the conical surface, the stop block 491 flips downward by the restoring force of the torsion spring 492. When the feeding pusher 488 resets, it forms an upward squeeze on the drive wheel 494 along the conical surface, causing the stop block 491 to flip upward and squeeze the torsion spring 492 at the same time, until the feeding pusher 488 resets and the reagent bottles move to the feeding position of the feeding rack 481 to wait for feeding.

[0028] The detection method of the present invention: a. Reagent bottle preparation: The operator stores several reagent bottles in storage box 421 for later use; b. Sample water pretreatment: First, a fixed amount of water is pumped into the evaporation chamber 12 through the inlet via a water supply pump. Then, according to the fixed amount of water and the set ratio, the corresponding amount of chemical is added. During addition, motor 162 is started, which moves the cover plate 165 to expose the top channel of the evaporation chamber 12. Then, motor 154 is started, which drives the discharge head 156 to rotate. The number of rotations depends on the required amount of chemical, and the amount of chemical added is consistent with each rotation. After addition is completed, motor 162 drives the cover plate 165 to reset and cover the top channel of the evaporation chamber 12. Then, the electric heating coil 121 is activated to heat the evaporation chamber 12, causing the water mixed with the medicine powder inside the evaporation chamber 12 to evaporate. The steam enters the spiral cooling tube 131 in the condensation chamber 13 through the pipe. While moving in the spiral cooling tube 131, it exchanges heat with the cooling water and condenses. The condensed water flows into the collection chamber 14. The conductivity sensor 141 installed on the collection chamber 14 detects the sample water. If the test is unqualified, it is pumped back to the evaporation chamber 12 for re-evaporation or the medicine is added and then re-evaporated. If the test is qualified, it is stored in the collection chamber 14 for use. c. Reagent bottle loading: Start motor 3 485. Motor 3 485 drives rotating part 486 to rotate, moving the reagent bottle in storage box 421 to guide frame 483. The reagent bottle at the front moves along guide frame 483 to the loading station of loading rack 481. Then start motor 487. Motor 487 drives loading pusher 488 to rotate, pushing the reagent bottle upward along loading rack 481 to the discharge point. While the loading pusher 488 is rotating, it drives the release block 495 to move synchronously. Through the conical surface of release block 495 and the restoring force of torsion spring 492, the stop block 491 is driven to flip downward to block the reagent bottle on loading rack 481. After the reagent bottle is transported to the discharge station of loading rack 481, the robot arm 43 picks up the reagent bottle and places it at clamp 45. d. After the clamping cylinder 452 drives the gripper 453 to remove the reagent bottle, the robot arm 43 unscrews the bottle cap and places it on the placement platform 413. Then, the robot arm 43 moves the two injection sleeves 412 to the reagent bottle in sequence and injects a certain amount of scintillation liquid and sample water into the reagent bottle through the metering pump 145 respectively, and then resets the bottle. e. After the robotic arm 43 retrieves the bottle cap, it screws it onto the reagent bottle, and then the clamping cylinder 452 releases the reagent bottle; f. After the robotic arm 43 places the reagent bottle onto the vibrating shaker 461, it starts the vibrating shaker 461 to perform timed shaking. The shaking time is set in advance and controlled by the control system 3. g. After shaking, the robotic arm 43 removes the reagent bottle and places it on the weighing device 47 for weighing. The weighing data is then transmitted to the control system 3. h. Then the robot arm 43 places the weighed reagent bottle into the testing equipment for testing. After the testing is completed, the reagent bottle is placed into the receiving drawer 441. Then the pusher 444 is started. The pusher 444 pushes the reagent bottle forward. The reagent bottles arranged in the receiving drawer 441 move forward one station along the inner wall of the receiving drawer 441 and the arc-shaped guide surface 442 for collection. Finally, wait for the next test to begin. After the test begins, repeat the same steps. Operators regularly replenish the reagent bottles in storage box 421 and remove the reagent bottles collected in receiving drawer 441.

[0029] The scope of protection of this invention is not limited to the above embodiments and their variations. Conventional modifications and substitutions made by those skilled in the art based on the content of these embodiments are all within the scope of protection of this invention.

Claims

1. An automatic continuous detection system for environmental tritium, comprising a frame (41), an automatic detection device (2) for detecting sample water disposed within the frame (41), and a control system (3) for controlling the detection system; wherein the automatic detection device (2) is an ultra-low background liquid scintillation spectrometer; characterized in that... It also includes a loading and unloading device (4) installed on one side of the automatic testing equipment (2) for automatically filling sample water and automatically loading and unloading the filled sample water into the automatic testing equipment (2); the loading and unloading device (4) includes a reagent bottle loading device (42) on the mounting frame (41) for storing reagent bottles and automatically loading reagent bottles, a robot (43), and a receiver (44) for storing reagent bottles after testing; the frame (41) is also equipped with a clamping device (45) for clamping reagent bottles to facilitate the robot (43) to remove and install the bottle caps on the reagent bottles. The reagent bottle feeding device (42) includes a shaker (46) for shaking the liquid in the reagent bottle and a weighing device (47) for weighing the reagent bottle; the reagent bottle feeding device (42) includes a storage box (421) for storing the reagent bottle, a guide structure (48) provided in the storage box (421) for guiding the movement of the reagent bottle in the storage box (421), a feeding rack (481) connected to the guide structure (48) for feeding the reagent bottle, and a feeder (482) installed on the feeding rack (481) for conveying the reagent bottle from the guide structure (48) to the feeding rack (481). The clamp (45) includes a cylinder (452) mounted on a frame (41), grippers (453) mounted on the cylinder (452) for clamping reagent bottles, and a bracket (451) mounted on the frame (41) for supporting the cylinder (452). The bracket (451) is also equipped with several limiting blocks (454) for limiting the position of the reagent bottles, including at least a limiting block (454) located in the middle of the grippers and close to the cylinder (452), or limiting blocks (454) located on both sides of the grippers and a limiting block (453) located in the middle of the grippers and close to the cylinder (452). 4); The bracket (451) is provided with several support rods (455) and a base plate (456) fixedly connected to the support rods (455). A cylinder support plate (457) is movably installed on the support rods (455). A spring (458) is fitted on the support rods (455). The spring (458) is located between the cylinder support plate (457) and the base plate (456). A limiting rod (459) is also installed on the base plate (456) to limit the position of the cylinder support plate (457). One end of the limiting rod (459) passes through the cylinder support plate (457) and is fixedly connected to the base plate (456). The frame (41) is also equipped with a scintillation liquid raw material tank (5) and several placement racks (411). An injection sleeve (412) is placed on the placement rack (411). One injection sleeve (412) is connected to the scintillation liquid raw material tank (5) through a pipeline, and a metering pump is connected to the pipeline. The other injection sleeve (412) is connected to the sample water pretreatment device (1) through a pipeline. After the robot (43) grabs the injection sleeve (412) and places it at the mouth of the reagent bottle, a quantitative amount of scintillation liquid and sample water is injected into the reagent bottle through the metering pump (145). The frame (41) is also equipped with a placement platform (413) for placing the reagent bottle cap. It also includes a sample water pretreatment device (1) mounted on a rack (41); the sample water pretreatment device (1) includes a chassis (11), an evaporation chamber (12) installed in the chassis (11), a condensation chamber (13) installed in the chassis (11) and connected to the evaporation chamber (12) via a pipeline, a collection chamber (14) connected to the condensation chamber (13) via a pipeline, a drug supply mechanism (15) installed in the chassis (11) for automatically and quantitatively supplying drugs to the evaporation chamber (12), and a cover plate mechanism (16) installed in the chassis (11) for sealing the top channel of the evaporation chamber (12); the drug supply mechanism (15) includes an automatic quantitative drug supply mechanism installed in the chassis (11) and above the evaporation chamber (12) that completes the quantitative drug supply without manual intervention. The device includes a controllable dispensing device (151) and a medicine container (152) installed on the dispensing device (151); the dispensing device (151) includes a housing (153) installed on a chassis (11), a motor (154) installed in the housing (153), a dispensing valve block (155) installed on the housing (153), and a discharge head (156) movably installed in the dispensing valve block (155) and connected to the motor (154) for transmission; the dispensing valve block (155) is provided with a dispensing channel (157), and the medicine container (152) is installed on the dispensing valve block (155) and communicates with the dispensing channel (157); the discharge head (156) is provided with a dispensing groove (158) corresponding to the position of the dispensing channel (157).

2. The automatic continuous detection system for environmental tritium according to claim 1, characterized in that: The shaker (46) is a vibrating shaker (461) mounted on a frame (41), and the vibrating shaker (461) is equipped with a protective frame (462) to limit the reagent bottle and prevent it from falling.

3. The automatic continuous detection system for environmental tritium according to claim 1, characterized in that: The cover plate mechanism (16) includes a motor frame (161) mounted on the chassis (11), a second motor (162) mounted on the motor frame (161), a drive block (163) connected to the output shaft of the second motor (162), a drive plate (164) mounted on the drive block (163), and a cover plate (165) mounted on the drive plate (164) for sealing the top channel of the evaporation chamber (12); an electric heating coil (121) is wound around the outside of the evaporation chamber (12); the evaporation chamber (12) is provided with several inlets (122) and drain outlets (123); the condensation chamber (13) is provided with a spiral cooling pipe (131) connected to the pipeline for improving the cooling effect, and the condensation chamber (13) is also provided with a coolant inlet (132) and a coolant outlet (133); the liquid collection chamber (14) is also provided with a conductivity sensor (141) for detecting sample water, and the liquid collection chamber (14) is also connected to a metering pump (145) through a pipeline.

4. The automatic continuous detection system for environmental tritium according to claim 1, characterized in that: It also includes a sample collection device (6) mounted on a frame (41); the sample collection device (6) includes a collection chamber (61) mounted on the frame (41) and connected to the sample water pretreatment device via a pipeline, and a collection cylinder (62) mounted on the collection chamber.

5. The automatic continuous detection system for environmental tritium according to claim 1, characterized in that: The guiding structure (48) includes a guide frame (483) installed in the storage box (421), a motor bracket (484) installed in the storage box (421), a motor three (485) installed on the motor bracket (484), and a rotating component (486) connected to the motor three (485) for moving the reagent bottles in the storage box (421) to the guide frame (483); the feeding rack (481) is installed on the storage box (421) and communicates with the guide frame (483) in an arc shape and is set upward; the feeder (482) includes a motor four (487) installed on the feeding rack (481), a feeding pusher (488) connected to the motor four (487), and a feeding pusher installed on the guide frame (483) and the feeding pusher. The frame (488) has a blocking mechanism (49) for blocking the position of reagent bottles arranged on the guide frame (483); the receiver (44) includes a receiving drawer (441) movably installed in the frame (41), an arc-shaped guide surface (442) installed in the receiving drawer (441) to guide the movement of reagent bottles in the receiving drawer (441) and facilitate the arrangement of reagent bottles in an arc shape, and a pushing mechanism (443) installed on the receiving drawer (441) for pushing the reagent bottles to move; the pushing mechanism (443) includes a pusher (444) installed on the frame (41) and a pushing block (445) installed on the pusher (444); the pusher (444) can be a cylinder or an electric push rod.

6. The automatic continuous detection system for environmental tritium according to claim 5, characterized in that: The material blocking mechanism (49) includes a material blocking block (491) movably mounted on a guide frame (483) via a pin, a torsion spring (492) movably mounted on the pin and connected to the material blocking block (491) and the guide frame (483) for driving the material blocking block (491) to block the reagent bottle, a drive rod (493) mounted on the material blocking block (491), a drive wheel (494) mounted on the drive rod (493), and a material dispensing block (495) mounted on the feeding pusher (488) and cooperating with the drive wheel (494) to drive the material blocking block (491) to flip and dispense the reagent bottle; the side of the material dispensing block (495) that contacts and cooperates with the drive wheel (494) is set as a conical surface.

7. The detection method of the automatic continuous environmental tritium detection system according to any one of claims 1 to 6, characterized in that: The detection method is as follows: a. Reagent bottle preparation: The operator stores several reagent bottles in a storage box for later use; b. Sample water pretreatment: After being prepared into sample water by the pretreatment device, the sample water is temporarily stored in the collection chamber for later use; c. Reagent bottle loading: The reagent bottle is pushed to the loading position by the feeder and then picked up by the robot and placed on the clamp. d. After the clamping device clamps the reagent bottle, the robotic arm unscrews the bottle cap and places it on the placement stage. Then, the robotic arm moves the two injection sleeves to the reagent bottle in sequence and uses a metering pump to inject a fixed amount of scintillation solution and sample water into the reagent bottle. e. After the robotic arm retrieves the bottle cap, it screws it onto the reagent bottle, and then the clamp releases the reagent bottle; f. After the robotic arm places the reagent bottle onto the shaker, it starts the vibrating shaker to perform timed shaking. g. After shaking, the robotic arm removes the reagent bottle and places it on the weighing device for weighing. The weighing data is then transmitted to the control system. h. Then the robotic arm places the weighed reagent bottles into the testing equipment for testing. After the testing is completed, the reagent bottles are placed into the receiving drawer to wait for the next testing to begin.

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