Intelligent mercury detector with self-calibration function

Abstract

The application relates to the technical field of mercury detectors, in particular to an intelligent mercury detector with a self-calibration function, which comprises a detection module, a calibration module and a support frame. The detection module is used for detecting the mercury content of a sample, the calibration module is connected with the detection module through a linkage mechanism, can automatically complete calibration, the bottom of the support frame is provided with an adjusting assembly and a sliding structure, so that the equipment height and position can be conveniently adjusted. Temperature and humidity sensors are arranged on the outer wall of a detection cavity, environmental parameters are monitored in real time, detection parameters are adjusted through a control unit, and external interference is reduced. An exhaust hole and a filter element are arranged at the top of a calibration cavity, so that safety of exhaust is ensured. The application simplifies an operation process, improves detection precision and stability, and solves the problems of high assembly and maintenance costs, easy interference and complicated manual calibration of an existing mercury detector.

Description

Technical Field

[0001] This utility model belongs to the field of environmental monitoring and analysis instrument technology, specifically an intelligent mercury analyzer with self-calibration function. Background Technology

[0002] In environmental monitoring and industrial production, mercury content detection is a crucial step in assessing pollution levels and ensuring safety. Currently, some mercury analyzers based on chemical analysis, optical absorption, and sensor technologies are available on the market. However, these devices typically rely on complex mechanical structures and electronic control systems, resulting in high assembly and maintenance costs. Furthermore, traditional mercury analyzers are susceptible to interference from external environmental factors during long-term use, affecting measurement accuracy and stability.

[0003] For example, some mercury analyzers use multiple sets of precision gears and linkages to transport and detect samples. However, wear and changes in clearance between mechanical parts can lead to deviations in the test results. Furthermore, existing equipment typically requires manual calibration before use, which is cumbersome and demands a high level of technical skill from the user. These issues indicate that there is still room for improvement in the mechanical structure design and self-calibration capabilities of existing mercury analyzers.

[0004] Therefore, we have made improvements to this and proposed an intelligent mercury analyzer with self-calibration function. Utility Model Content

[0005] The purpose of this invention is to solve the problems of high assembly and maintenance costs of current mercury analyzers and the susceptibility to interference from external environmental factors during long-term use, which leads to a decrease in measurement accuracy. At the same time, it avoids the shortcomings of cumbersome manual calibration operations and high technical requirements for users.

[0006] To achieve the aforementioned objectives and address the aforementioned problems, this utility model provides an intelligent mercury analyzer with self-calibration function, comprising a detection module, a calibration module, and a support frame. The detection module is used to detect the mercury content in a sample. The calibration module is located on one side of the detection module and connected to it via a linkage mechanism. The support frame is used to fix the detection module and the calibration module. An adjustment component is located at the bottom of the support frame, and the adjustment component is connected to the support frame via a sliding structure.

[0007] The detection module includes a detection chamber, a sample delivery tube, and an optical detection unit. The detection chamber has a sample receiving slot inside. The sample delivery tube passes through the top of the detection chamber and communicates with the sample receiving slot. The optical detection unit is installed on one side of the detection chamber, with its detection end extending into the sample receiving slot. The outer wall of the sample delivery tube has several annular protrusions, and an elastic sealing ring is fitted around the outer side of each annular protrusion, tightly fitting against the top of the detection chamber.

[0008] As a preferred technical solution of this application, the calibration module includes a calibration chamber, a standard substance storage tank, and a drive assembly. The calibration chamber is connected to the detection chamber via a connecting channel. The standard substance storage tank is fixed to the top of the calibration chamber, and its outlet is connected to the interior of the calibration chamber via a solenoid valve. The drive assembly is installed on one side of the calibration chamber, and its output end is connected to a stirring blade inside the calibration chamber. The drive assembly includes a stepper motor and a reduction gear set. The output shaft of the stepper motor meshes with the input end of the reduction gear set, and the output end of the reduction gear set is connected to the rotation shaft of the stirring blade.

[0009] As a preferred technical solution of this application, the linkage mechanism includes a transmission rod and a guide member. One end of the transmission rod is hinged to the outer wall of the detection cavity, and the other end is hinged to the outer wall of the calibration cavity. The guide member is fixed to the inner side of the support frame, and the transmission rod passes through the guide member and is slidably connected to it. The transmission rod has a threaded section in the middle, and a locking nut is fitted on the threaded section. The locking nut is threadedly connected to the transmission rod to limit the movement range of the transmission rod.

[0010] As a preferred technical solution of this application, the adjustment assembly includes a base, an adjustment screw, and a limiting block. The base is fixed to the bottom of the support frame, the adjustment screw passes through the base and is threadedly connected to the base, and the top end of the adjustment screw contacts the bottom of the support frame. The limiting block is fixed to the bottom of the adjustment screw, and the outer side of the limiting block is provided with anti-slip texture. The outer wall of the adjustment screw is provided with scale marks to indicate the rotation angle of the adjustment screw.

[0011] As a preferred technical solution of this application, the sliding structure includes a slide rail and a slider. The slide rail is fixed to the bottom of the support frame, and the slider is fixed to the top of the base. The slider is slidably connected to the slide rail. Baffles are provided on both sides of the slide rail, and an elastic buffer layer is provided on the inner side of the baffles, which contacts the outer side of the slider.

[0012] As a preferred technical solution of this application, a temperature sensor and a humidity sensor are provided on the outer wall of the detection cavity. The temperature sensor and the humidity sensor are respectively connected to the control unit through signal lines. The control unit adjusts the operating parameters of the optical detection unit according to the detection data of the temperature sensor and the humidity sensor. A shielding layer made of metal braided mesh is provided on the outside of the signal line to reduce external electromagnetic interference.

[0013] As a preferred technical solution of this application, the top of the calibration chamber is provided with an exhaust port, and a filter element made of activated carbon is installed inside the exhaust port to adsorb harmful substances in the exhaust gas. A protective cover is provided on the outside of the exhaust port, and a guide plate is provided on the inside of the protective cover, with the guide plate distributed in a spiral shape.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] Through the established calibration module and linkage mechanism, when the detection module requires calibration, the standard substance in the calibration module enters the detection chamber through the connecting channel. The drive component rotates the stirring blades to uniformly mix the standard substance, thus completing the automatic calibration process. By adjusting the coordination of the components and sliding structure, the height and position of the support frame can be adjusted according to actual needs, ensuring stable operation of the equipment in different environments. Furthermore, temperature and humidity sensors on the outer wall of the detection chamber monitor environmental parameters in real time and transmit the data to the control unit. The control unit adjusts the operating parameters of the optical detection unit accordingly, thereby reducing the impact of external environmental factors on the detection results. This design not only simplifies the operation process but also significantly improves detection accuracy and stability, solving the problems of high assembly and maintenance costs, susceptibility to external interference, and cumbersome manual calibration found in existing mercury analyzers. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the base structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the slide rail structure of this utility model.

[0019] Figure 4 This is a schematic diagram of the structure of the testing cavity for practical applications.

[0020] Figure 5 This is a schematic diagram of the internal structure of the calibration chamber for this practical application.

[0021] The attached figures are labeled as follows:

[0022] 1. Detection module; 2. Calibration module; 3. Support frame; 4. Detection chamber; 5. Sample delivery tube; 6. Optical detection unit; 7. Calibration chamber; 8. Standard substance storage container; 9. Drive assembly; 10. Transmission rod; 11. Guide component; 12. Base; 13. Adjusting screw; 14. Limit block; 15. Slide rail; 16. Slider. Detailed Implementation

[0023] This utility model provides an intelligent mercury analyzer with self-calibration function, whose structure consists of a detection module 1, a calibration module 2, and a support frame 3. Combined with... Figures 1 to 5 As shown, the specific implementation methods of each part will be described in detail below.

[0024] The detection module 1 includes a detection chamber 4, a sample delivery tube 5, and an optical detection unit 6. The detection chamber 4 is a closed metal structure with a sample receiving slot inside for holding the sample to be tested. The sample delivery tube 5 passes through the top of the detection chamber 4 and communicates with the sample receiving slot. Several annular protrusions are provided on the outer wall of the sample delivery tube 5, and elastic sealing rings are fitted around the outside of these annular protrusions. The elastic sealing rings fit tightly against the top of the detection chamber 4 to ensure sealing performance. The optical detection unit 6 is installed on one side of the detection chamber 4, and its detection end extends into the sample receiving slot for detecting the mercury content in the sample. Figure 2 As can be seen, the optical detection unit 6 is fixed to the side wall of the detection cavity 4 by bolts, and the detection end is connected to the opening of the detection cavity 4 by a sealing gasket to prevent external gas or impurities from entering the detection cavity 4.

[0025] Calibration module 2 is located on one side of detection module 1 and is connected to detection module 1 via a linkage mechanism. Calibration module 2 includes a calibration chamber 7, a standard substance storage tank 8, and a drive assembly 9. Calibration chamber 7 is connected to detection chamber 4 via a connecting channel, which is a stainless steel pipe with both ends welded to the side walls of detection chamber 4 and calibration chamber 7, respectively. Standard substance storage tank 8 is fixed to the top of calibration chamber 7, and its outlet is connected to the interior of calibration chamber 7 via a solenoid valve. The solenoid valve is connected to a control unit via a wire, and the control unit sends signals to open or close the solenoid valve as needed. Drive assembly 9 is installed on one side of calibration chamber 7, and its output end is connected to the stirring blade inside calibration chamber 7. Drive assembly 9 consists of a stepper motor and a reduction gear set. The output shaft of the stepper motor meshes with the input end of the reduction gear set, and the output end of the reduction gear set is connected to the rotating shaft of the stirring blade. Figure 3 As can be seen, the stepper motor is fixed to the outer wall of the calibration chamber 7 by bolts, the housing of the reduction gear set is connected to the stepper motor by a snap-fit, and the rotating shaft of the stirring blade passes through the side wall of the calibration chamber 7 and is fixed inside the calibration chamber 7 by bearings.

[0026] The linkage mechanism includes a transmission rod 10 and a guide member 11. One end of the transmission rod 10 is hinged to the outer wall of the detection chamber 4, and the other end is hinged to the outer wall of the calibration chamber 7. Figure 4 As can be seen, the transmission rod 10 passes through and slides through the guide member 11, which is fixed to the inner side of the support frame 3. A threaded section is provided in the middle of the transmission rod 10, and a locking nut is fitted onto the threaded section. The locking nut is threadedly connected to the transmission rod 10 to limit its range of motion. When the detection module 1 needs to be calibrated, the locking nut is manually rotated to loosen it, allowing the transmission rod 10 to slide within the guide member 11, thereby moving the calibration chamber 7 closer to or further away from the detection chamber 4.

[0027] The support frame 3 is used to fix the detection module 1 and the calibration module 2, and its bottom is equipped with an adjustment component. The adjustment component includes a base 12, an adjustment screw 13, and a limit block 14. Figure 3 As can be seen, the base 12 is fixed to the bottom of the support frame 3 by welding. The adjusting screw 13 passes through the base 12 and is threadedly connected to it, with the top of the adjusting screw 13 contacting the bottom of the support frame 3. A limiting block 14 is fixed to the bottom of the adjusting screw 13, and the outer side of the limiting block 14 has anti-slip textures for easy manual operation. The outer wall of the adjusting screw 13 has scale markings to indicate the rotation angle of the adjusting screw 13. By rotating the adjusting screw 13, the height of the support frame 3 can be adjusted to meet the needs of different working environments.

[0028] The bottom of the support frame 3 is also equipped with a sliding structure, which includes a slide rail 15 and a slider 16. The slide rail 15 is fixed to the bottom of the support frame 3 by bolts, and the slider 16 is fixed to the top of the base 12 by bolts. The slider 16 is slidably connected to the slide rail 15. Baffles are provided on both sides of the slide rail 15, and an elastic buffer layer is provided on the inner side of the baffles. The elastic buffer layer contacts the outer side of the slider 16. By pushing the support frame 3, the slider 16 can slide along the slide rail 15, thereby adjusting the position of the support frame 3.

[0029] Temperature and humidity sensors are mounted on the outer wall of the detection chamber 4, and are connected to the control unit via signal lines. The signal lines are shielded with a metal braided mesh to reduce external electromagnetic interference. The temperature and humidity sensors monitor environmental parameters in real time and transmit the data to the control unit. The control unit adjusts the operating parameters of the optical detection unit 6 based on the received data. For example, when the ambient temperature rises, the control unit automatically increases the light source intensity of the optical detection unit 6 to compensate for the decrease in detection accuracy caused by temperature changes.

[0030] The calibration chamber 7 has an exhaust port at its top, inside which is installed a filter element made of activated carbon to adsorb harmful substances in the exhaust gas. A protective cover is located outside the exhaust port, and guide vanes are located inside the cover, arranged in a spiral pattern to guide the gas flow. After calibration, the gas inside the calibration chamber 7 is discharged through the exhaust port, adsorbed by the filter element, and then released into the external environment.

[0031] In practical use, the sample to be tested is first sent into the sample receiving slot of the detection chamber 4 through the sample delivery tube 5. Then, the optical detection unit 6 is activated to detect the mercury content in the sample. If calibration is required, the control unit sends a signal to open the solenoid valve, allowing the standard substance in the standard substance storage tank 8 to flow into the calibration chamber 7. Simultaneously, the stepper motor starts, driving the stirring blades to rotate through the reduction gear set to uniformly mix the standard substance. Subsequently, the calibration chamber 7 is moved closer to the detection chamber 4 by manually operating the transmission rod 10, and the standard substance enters the detection chamber 4 through the connecting channel to complete the automatic calibration process. During this process, the temperature and humidity sensors monitor environmental parameters in real time, and the control unit adjusts the operating parameters of the optical detection unit 6 based on the monitoring data to ensure the accuracy of the detection results. Through the above steps, the mercury analyzer can be automatically calibrated, simplifying the operation process and significantly improving the detection accuracy and stability.

[0032] To enable those skilled in the art to fully understand and implement this utility model, the following supplementary explanation of the implementation principle of this utility model is provided in conjunction with specific application scenarios.

[0033] First, the sample to be tested is fed into the sample receiving slot of the detection chamber 4 through the sample delivery tube 5. Several annular protrusions are provided on the outer wall of the sample delivery tube 5. Elastic sealing rings fitted around these annular protrusions fit tightly against the top of the detection chamber 4, ensuring sealing performance during delivery and preventing external gases or impurities from entering the detection chamber 4 and affecting the detection results. Then, the optical detection unit 6 is activated, its detection end extending into the sample receiving slot. The optical detection unit 6 detects the mercury content in the sample by emitting and receiving reflected signals from a light source. During this process, temperature and humidity sensors on the outer wall of the detection chamber 4 monitor environmental parameters in real time and transmit the data to the control unit. When the ambient temperature rises, the control unit automatically increases the light source intensity of the optical detection unit 6 based on the received data to compensate for the decrease in detection accuracy caused by temperature changes. This dynamic adjustment mechanism effectively reduces the impact of external environmental factors on the detection results, ensuring the accuracy of the detection.

[0034] If calibration of the mercury analyzer is required, a signal is sent from the control unit to open the solenoid valve, allowing the standard substance in the standard substance storage tank 8 to flow into the calibration chamber 7. The outlet of the standard substance storage tank 8 is connected to the interior of the calibration chamber 7 via the solenoid valve, whose opening and closing is precisely controlled by the control unit to ensure accurate adjustment of the standard substance flow rate and time. Simultaneously, the stepper motor in the drive assembly 9 starts, and the output shaft of the stepper motor drives the stirring blade to rotate through the reduction gear set, thereby uniformly mixing the standard substance flowing into the calibration chamber 7. The rotating shaft of the stirring blade passes through the side wall of the calibration chamber 7 and is fixed by bearings to ensure stable operation at high speeds and avoid uneven mixing caused by mechanical vibration. Through the above steps, the standard substance is thoroughly mixed, providing a reliable reference for subsequent calibration operations.

[0035] Subsequently, the locking nut in the middle of the transmission rod 10 is manually rotated to loosen it, allowing the transmission rod 10 to slide within the guide member 11. One end of the transmission rod 10 is hinged to the outer wall of the detection chamber 4, and the other end is hinged to the outer wall of the calibration chamber 7. Therefore, the sliding of the transmission rod 10 can move the calibration chamber 7 closer to the detection chamber 4. When the distance between the calibration chamber 7 and the detection chamber 4 reaches a suitable position, the standard substance enters the detection chamber 4 through the connecting channel, completing the automatic calibration process. The connecting channel is a stainless steel pipe, with both ends welded to the side walls of the detection chamber 4 and the calibration chamber 7 respectively, ensuring the sealing and corrosion resistance of the channel. During this process, the design of the linkage mechanism makes the movement of the calibration chamber 7 more stable, avoiding positional deviations caused by mechanical clearances or wear, thereby improving the calibration accuracy.

[0036] During equipment operation, the adjustment components and sliding structure at the bottom of the support frame 3 play a crucial role. By rotating the adjustment screw 13, the height of the support frame 3 can be adjusted to adapt to different working environments. The outer wall of the adjustment screw 13 has graduations, allowing operators to precisely control the rotation angle and ensure the equipment remains level at various heights. Furthermore, the slide rail 15 and slider 16 in the sliding structure work together; by pushing the support frame 3, the slider 16 slides along the slide rail 15, thereby adjusting the position of the support frame 3. The inner sides of the baffles on both sides of the slide rail 15 have elastic buffer layers that contact the outer sides of the slider 16, reducing friction during sliding and providing cushioning to prevent mechanical impacts caused by rapid movement. This design significantly improves the flexibility and stability of the equipment, meeting the needs of use in complex working environments.

[0037] After calibration, the gas inside calibration chamber 7 is discharged through the exhaust port. An activated carbon filter is installed inside the exhaust port to effectively adsorb harmful substances in the discharged gas, preventing secondary pollution. A spirally distributed guide vanes are installed inside the protective cover outside the exhaust port to guide the gas flow in a specific direction, further improving exhaust efficiency. This design not only meets environmental protection requirements but also extends the service life of the equipment.

[0038] In summary, through the above steps and design principles, this invention achieves automated calibration of the mercury analyzer, simplifies the equipment operation process, and significantly improves detection accuracy and stability. The coordinated operation of all components ensures reliable operation of the equipment in different environments, solving the problems of high assembly and maintenance costs, susceptibility to external interference, and cumbersome manual calibration found in existing mercury analyzers.

Claims

1. An intelligent mercury analyzer with self-calibration function, characterized in that, The device includes a detection module (1), a calibration module (2), and a support frame (3). The detection module (1) is used to detect the mercury content in the sample. The calibration module (2) is located on one side of the detection module (1) and is connected to the detection module (1) through a linkage mechanism. The support frame (3) is used to fix the detection module (1) and the calibration module (2). The bottom of the support frame (3) is provided with an adjustment component, which is connected to the support frame (3) through a sliding structure.

2. The intelligent mercury analyzer with self-calibration function according to claim 1, characterized in that, The detection module (1) includes a detection cavity (4), a sample delivery tube (5), and an optical detection unit (6). The inside of the detection cavity (4) is provided with a sample receiving groove. The sample delivery tube (5) passes through the top of the detection cavity (4) and communicates with the sample receiving groove. The optical detection unit (6) is installed on one side of the detection cavity (4). The detection end of the optical detection unit (6) extends into the sample receiving groove. The outer wall of the sample delivery tube (5) is provided with several annular protrusions. An elastic sealing ring is sleeved on the outside of the annular protrusions. The elastic sealing ring is tightly fitted to the top of the detection cavity (4).

3. The intelligent mercury analyzer with self-calibration function according to claim 1, characterized in that, The calibration module (2) includes a calibration chamber (7), a standard substance storage tank (8), and a drive assembly (9). The calibration chamber (7) is connected to the detection chamber (4) through a connecting channel. The standard substance storage tank (8) is fixed on the top of the calibration chamber (7). The outlet of the standard substance storage tank (8) is connected to the inside of the calibration chamber (7) through a solenoid valve. The drive assembly (9) is installed on one side of the calibration chamber (7). The output end of the drive assembly (9) is connected to the stirring blade inside the calibration chamber (7). The drive assembly (9) includes a stepper motor and a reduction gear set. The output shaft of the stepper motor meshes with the input end of the reduction gear set. The output end of the reduction gear set is connected to the rotating shaft of the stirring blade.

4. The intelligent mercury analyzer with self-calibration function according to claim 1, characterized in that, The linkage mechanism includes a transmission rod (10) and a guide (11). One end of the transmission rod (10) is hinged to the outer wall of the detection cavity (4), and the other end is hinged to the outer wall of the calibration cavity (7). The guide (11) is fixed to the inner side of the support frame (3). The transmission rod (10) passes through the guide (11) and is slidably connected to it. The middle part of the transmission rod (10) is provided with a threaded section, and a locking nut is sleeved on the threaded section. The locking nut is threadedly connected to the transmission rod (10).

5. The intelligent mercury analyzer with self-calibration function according to claim 1, characterized in that, The adjustment assembly includes a base (12), an adjustment screw (13), and a limiting block (14). The base (12) is fixed to the bottom of the support frame (3). The adjustment screw (13) passes through the base (12) and is threadedly connected to the base (12). The top of the adjustment screw (13) contacts the bottom of the support frame (3). The limiting block (14) is fixed to the bottom of the adjustment screw (13). The outer side of the limiting block (14) is provided with anti-slip texture. The outer wall of the adjustment screw (13) is provided with scale markings.

6. The intelligent mercury analyzer with self-calibration function according to claim 1, characterized in that, The sliding structure includes a slide rail (15) and a slider (16). The slide rail (15) is fixed to the bottom of the support frame (3), and the slider (16) is fixed to the top of the base (12). The slider (16) is slidably connected to the slide rail (15). The slide rail (15) has baffles on both sides, and the inner side of the baffles has an elastic buffer layer. The elastic buffer layer contacts the outer side of the slider (16).

7. The intelligent mercury analyzer with self-calibration function according to claim 2, characterized in that, Temperature sensor and humidity sensor are provided on the outer wall of the detection cavity (4). Temperature sensor and humidity sensor are respectively connected to control unit through signal line. The signal line is covered with a shielding layer made of metal braided mesh.

8. The intelligent mercury analyzer with self-calibration function according to claim 3, characterized in that, The top of the calibration chamber (7) is provided with an exhaust hole, and a filter element is installed inside the exhaust hole. The filter element is made of activated carbon. A protective cover is provided on the outside of the exhaust hole, and a guide plate is provided on the inside of the protective cover. The guide plate is distributed in a spiral shape.

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