A hazardous substance detection apparatus and method for solid waste

Abstract

The application discloses a kind of equipment and method for detecting harmful substances of solid waste, it is related to the technical field of solid waste detection, it includes equipment main body, sample cup, sample processing unit, sample detection unit, sample conveying unit, sampling unit and data output unit.The application integrates spectrum detection module, chromatography detection module and infrared detection module in equipment main body, utilizes sample conveying unit to convey sample cup to each detection module in turn, cooperates sampling unit to sample detection, finally by data output unit, the results are output, multiple harmful substances are realized one-stop detection, avoid the problem that detection process is long caused by multiple equipment independent operation, reduce the link of sample multiple processing, effectively reduce detection time and labor cost, meet the efficient, fast detection demand.

Description

Technical Field

[0001] This application relates to the technical field of solid waste detection, and in particular to a device and method for detecting hazardous substances in solid waste. Background Technology

[0002] The detection of hazardous substances in solid waste is a crucial aspect of environmental protection and industrial safety, especially in the shale gas extraction sector, where the treatment and detection of oil-containing hazardous waste directly impacts environmental safety and compliance. Currently, domestic and international technologies for detecting oil-containing hazardous waste primarily focus on spectral analysis and chromatographic analysis.

[0003] Currently, commonly used detection equipment includes inductively coupled plasma atomic emission spectrometers (for heavy metal detection), atomic fluorescence spectrometers (for specific element detection), infrared oil analyzers (for waste oil detection), and gas chromatography-mass spectrometry (for organic compounds such as benzo[a]pyrene). These devices work independently and are used to detect different hazardous substances.

[0004] However, the independent operation of multiple devices results in a lengthy testing process, requiring samples to be processed multiple times, which increases testing time and labor costs, and fails to meet the demand for efficient and rapid testing. Summary of the Invention

[0005] In view of the problems existing in the prior art, this application provides a device and method for detecting hazardous substances in solid waste.

[0006] Firstly, this application provides a hazardous substance detection device for solid waste, which adopts the following technical solution:

[0007] A hazardous substance detection device for solid waste includes a main body; a sample cup for holding the sample to be tested; a sample processing unit including a solvent adding module for adding solvent to the sample cup and a mixing module for mixing the solvent in the sample cup with the sample; a sample detection unit including a spectral detection module, a chromatographic detection module, and an infrared detection module integrated into the main body; a sample delivery unit for sequentially delivering the sample cup to the spectral detection module, chromatographic detection module, and infrared detection module of the sample detection unit; a sampling unit for removing the sample from the sample cup and placing it in the detection area of ​​the spectral detection module, chromatographic detection module, or infrared detection module; and a data output unit electrically connected to the sample detection unit for outputting the detection results.

[0008] Optionally, the solvent addition module includes a solvent tank for storing solvent, a solvent delivery pipe connected to the solvent tank, a liquid supply pump for introducing the solvent from the solvent tank into the solvent delivery pipe, a lifting frame that is slidably installed in the main body of the device in a vertical direction, an outlet pipe installed on the lifting frame and connected to the solvent delivery pipe, and a first driving component for driving the lifting frame to slide, wherein the outlet pipe is used to insert into the sample cup.

[0009] Optionally, the mixing module includes a sleeve rod rotatably sleeved on the liquid outlet pipe, a stirring rod fixedly installed on the side wall of the stirring rod, and a first motor for driving the sleeve rod to rotate. The sleeve rod is hollow, and the liquid outlet pipe passes through the sleeve rod. The bottom end of the stirring rod is lower than the bottom end of the liquid outlet pipe in the vertical direction.

[0010] Optionally, the sample conveying unit includes a conveying frame rotatably disposed within the main body of the equipment, and a second motor for driving the conveying frame to rotate, wherein the sample cup is fixedly disposed on the conveying frame.

[0011] Optionally, the sampling unit includes a rotating frame rotatably disposed within the main body of the device, a third motor for driving the rotating frame to rotate, a sampling frame slidably disposed on the rotating frame in a vertical direction, a second driving member for driving the sampling frame to slide vertically, a sampling tube fixedly disposed on the sampling frame, and a positive and negative pressure module for drawing the sample from the sample cup into the sampling tube or pushing the sample from the sampling tube out. The bottom end of the sampling tube is open, and the outer diameter of the bottom of the sampling tube gradually decreases along the direction close to the bottom end of the sampling tube.

[0012] Optionally, the positive and negative pressure module includes an air pump installed on the main body of the device, an airflow pipe for connecting the air pump and the sampling tube respectively, and a piston slidably disposed in the sampling tube. The piston is adapted to the inside of the sampling tube, and the end of the airflow pipe that connects to the sampling tube is located on the side of the piston away from the bottom opening of the sampling tube.

[0013] Optionally, a vent is provided at the bottom center of the sample cup, and a telescopic rod slides through the vent. A third driving component is provided on the conveyor frame to drive the telescopic rod to slide. A sealing plug is provided at the top of the telescopic rod to close the vent. A waste liquid tank is provided inside the main body of the device. A guide plate is provided on the conveyor frame at the bottom of the sample cup. The guide plate is used to guide the sample solution discharged from the vent into the waste liquid tank. A cleaning component for cleaning the sample cup is also provided inside the main body of the device.

[0014] Optionally, the cleaning assembly includes a water tank, a guide pipe communicating with the water tank, a water pump for guiding water from the water tank into the guide pipe, a cover plate slidably disposed in the main body of the equipment in a vertical direction, a fourth driving component for driving the cover plate to slide, a rinsing pipe disposed around the bottom of the cover plate and communicating with the guide pipe, and a plurality of nozzles communicating with the rinsing pipe. The cover plate is used to cover the top of the sample cup, and the nozzles are evenly distributed along the circumference of the rinsing pipe.

[0015] Optionally, an air cylinder is also fixedly installed at the bottom of the cover plate. The air cylinder is used to insert into the sample cup. Several air outlets are provided on the side wall of the air cylinder along its circumference. A hot air fan is provided on the main body of the device. The hot air fan is connected to a hot air pipe, and the hot air pipe is connected to the air cylinder.

[0016] Secondly, this application provides a detection method for a hazardous substance detection device for solid waste, employing the following technical solution:

[0017] A detection method for a hazardous substance detection device for solid waste includes the following steps:

[0018] S1. Place the sample to be tested into the sample cup;

[0019] S2. The sample cup is transported to the sample processing unit through the sample delivery unit, solvent is added to the sample cup through the solvent addition module, and the solvent is mixed with the sample through the mixing module.

[0020] S3. Start the sample delivery unit to deliver the sample cup mixed with solvent to the spectral detection module;

[0021] S4. Start the sampling unit, take out the sample from the sample cup and place it in the detection area of ​​the spectral detection module;

[0022] S5. Repeat S4-S5 to sequentially transfer the sample cup to the chromatography detection module and the infrared detection module to complete the detection by the chromatography detection module and the infrared detection module.

[0023] S6. Output the detection results of the spectral detection module, chromatographic detection module and infrared detection module respectively through the data output unit.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. This application integrates the spectral detection module, chromatographic detection module, and infrared detection module into the main body of the device. The sample delivery unit sequentially delivers sample cups to each detection module, and the sampling unit collects samples for detection. Finally, the data output unit outputs the results, realizing one-stop detection of multiple hazardous substances. This avoids the problem of lengthy detection processes caused by the independent operation of multiple devices, reduces the number of sample processing steps, effectively reduces detection time and labor costs, and meets the needs of efficient and rapid detection.

[0026] 2. This application achieves improved mixing efficiency by rotating the sleeve rod onto the outlet tube and ensuring that the outlet tube passes through the sleeve rod, while simultaneously ensuring that the vertical height of the bottom end of the stirring rod is lower than that of the outlet tube. This allows for simultaneous addition of solvent and stirring of the sample and solvent within the sample cup, thereby enhancing the mixing effect and making the mixing process more efficient.

[0027] 3. After the sample testing is completed, the telescopic rod can be driven by the third drive component to slide, so that the sealing plug opens the vent. The sample solution flows out through the vent and is guided into the waste liquid tank for collection and treatment through the guide plate. At the same time, the cleaning component can clean the sample cup, thereby improving the convenience of cleaning the sample cup.

[0028] 4. When cleaning the inside of the sample cup, pressing the lid onto the top of the sample cup can prevent water from splashing out from the top of the sample cup; and after cleaning the sample cup, the hot air generated by the hot air blower enters the air cylinder through the hot air pipe and is blown out from the circumferential air outlet on the side wall of the air cylinder, which can dry the inside of the sample cup, improve the drying speed of the sample cup, and avoid residual moisture affecting subsequent testing. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0030] Figure 2 This is a top view of the overall internal structure of the device body, as described in the embodiments of this application.

[0031] Figure 3 This is a schematic diagram illustrating the structure of the sample processing unit according to an embodiment of this application;

[0032] Figure 4 This is a partial structural cross-sectional view of the sample processing unit used in an embodiment of this application;

[0033] Figure 5 This is a cross-sectional view of the overall structure of an embodiment of this application;

[0034] Figure 6 This is a schematic diagram illustrating the structure of the sampling unit in an embodiment of this application;

[0035] Figure 7This is a cross-sectional view of the sampling tube used in the embodiments of this application;

[0036] Figure 8 This is a cross-sectional view of the structure of the cleaning assembly used in the embodiments of this application;

[0037] Figure 9 This is a schematic diagram illustrating the overall structure of the cleaning assembly in an embodiment of this application.

[0038] Explanation of reference numerals in the attached drawings: 1. Main body; 11. Waste liquid tank; 12. Waste liquid outlet; 13. Hot air blower; 14. Hot air pipe; 2. Sample cup; 21. Drain port; 22. Telescopic rod; 23. Sealing plug; 3. Sample processing unit; 31. Solvent addition module; 311. Solvent tank; 312. Solvent delivery pipe; 313. Liquid supply pump; 314. Lifting frame; 315. Liquid outlet pipe; 316. First driving component; 32. Mixing module; 321. Sleeve rod; 322. Stirring rod; 323. First motor; 4. Sample detection unit; 41. Spectroscopic detection module; 42. Chromatographic detection module; 43. Infrared detection module; 5. Measurement Module; 6. Sample Conveying Unit; 51. Conveying Frame; 52. Second Motor; 53. Third Drive Component; 54. Guide Plate; 6. Sampling Unit; 61. Rotating Frame; 62. Third Motor; 63. Sampling Frame; 64. Second Drive Component; 65. Sampling Tube; 66. Positive and Negative Pressure Module; 661. Air Pump; 662. Airflow Pipe; 663. Piston; 7. Data Output Unit; 71. Data Processing Module; 72. Control Panel; 8. Cleaning Components; 81. Water Tank; 82. Guide Tube; 83. Water Pump; 84. Cover Plate; 85. Fourth Drive Component; 86. Rinsing Pipe; 87. Nozzle; 88. Air Cylinder. Detailed Implementation

[0039] The following will be combined with the appendix Figure 1 -Appendix Figure 9 The technical solutions in the embodiments of the present invention are clearly and completely described herein. The described embodiments are only possible technical implementations of the present invention and not all possible implementations. Those skilled in the art can obtain other embodiments in conjunction with the embodiments of the present invention without creative effort, and these embodiments are also within the protection scope of the present invention.

[0040] The inventors of this application have discovered that currently, commonly used detection equipment for hazardous substances in solid waste includes inductively coupled plasma atomic emission spectrometry (for heavy metal detection), atomic fluorescence spectrometry (for specific element detection), infrared oil analyzer (for waste oil detection), and gas chromatography-mass spectrometry (for organic compounds such as benzo[a]pyrene). These devices operate independently, each targeting different hazardous substances. However, this independent operation of multiple devices leads to a lengthy detection process, requiring multiple sample processing steps, increasing detection time and labor costs, and failing to meet the demand for efficient and rapid detection. Therefore, this application discloses a device and method for detecting hazardous substances in solid waste, mainly employing the following scheme:

[0041] This application discloses a hazardous substance detection device for solid waste. (Refer to...) Figure 1 and Figure 2 The device includes a main body 1, a sample cup 2, a sample processing unit 3, a sample detection unit 4, a sample transport unit 5, a sampling unit 6, and a data output unit 7. The main body 1 serves as the supporting foundation for the entire detection device. The sample cup 2 is placed inside the main body 1 to hold the sample to be tested. The sample processing unit 3 is used for pre-processing the sample. The sample detection unit 4 includes multiple detection modules for detecting harmful substances in the sample. The sample transport unit 5 transports the sample cup 2 to each detection module. The sampling unit 6 transports the sample from the sample cup 2 to the detection area of ​​each detection module. The data output unit 7 outputs the detection results. This device integrates multiple detection functions into one device, reduces the need for multiple sample processing, and improves detection efficiency.

[0042] Reference Figure 1 Specifically, the data output unit 7 includes a data processing module 71 and a control panel 72. The data processing module 71 can be a high-performance microcontroller or an industrial computer. Microcontrollers are small and low-cost, suitable for scenarios with relatively low processing power requirements; industrial computers have stronger data processing capabilities and stability, capable of handling complex testing data processing needs. The data processing module 71 is electrically connected to the sample testing unit 4, receiving and processing the testing data output by the testing unit. The control panel 72 can be a touch screen or an operation panel with buttons. Touch screens are intuitive and convenient to operate, allowing various operations to be performed through icons and menus on the touch screen; operation panels with buttons offer better durability and reliability. The control panel 72 is connected to the data processing module 71 to display the processed data results. Operators can also input commands through the control panel 72 to control the operation of the entire testing equipment.

[0043] Reference Figure 3 and Figure 4Specifically, the sample processing unit 3 includes a solvent addition module 31 and a mixing module 32. The solvent addition module 31 is used to add solvent to the sample cup 2, and specifically includes a solvent tank 311 for storing solvent, a solvent delivery pipe 312 connected to the solvent tank 311, a liquid supply pump 313 for introducing the solvent in the solvent tank 311 into the solvent delivery pipe 312, a lifting frame 314 slidably installed in the main body 1 of the equipment in the vertical direction, a liquid outlet pipe 315 installed on the lifting frame 314 and connected to the solvent delivery pipe 312, and a first driving member 316 for driving the lifting frame 314 to slide. The solvent tank 311 is typically made of corrosion-resistant plastic or metal, such as polyethylene or stainless steel, to facilitate solvent storage. The solvent delivery pipe 312 can be a rubber or plastic tube with a certain degree of flexibility to accommodate the sliding of the outlet pipe 315. The outlet pipe 315 is vertically mounted on the lifting frame 314 and is a tubular structure made of a rigid material, such as metal or rigid plastic. The first drive unit 316, which is a cylinder, linear motor, or electric actuator, is installed inside the main body 1 to drive the lifting frame 314 to reciprocate vertically. When the sample is placed in the sample cup 2, the first drive unit 316 drives the lifting frame 314 to slide down, causing the outlet pipe 315 to insert into the sample cup 2. Then, the solvent in the solvent tank 311 is introduced into the solvent delivery pipe 312 by the supply pump 313 and flows out through the outlet pipe 315, thereby accurately adding solvent to the sample cup 2 and avoiding solvent splashing.

[0044] Reference Figure 3 and Figure 4 The mixing module 32 is used to mix the solvent and sample in the sample cup 2. Specifically, it includes a sleeve 321 that is rotatably fitted onto the outlet tube 315, a stirring rod 322 that is fixedly installed on the side wall of the sleeve 321, and a first motor 323 for driving the sleeve 321 to rotate. The sleeve 321 is generally a hollow metal tube and is rotatably mounted on the lifting frame 314 via bearings. Its inner diameter is slightly larger than the outer diameter of the outlet tube 315 so that it can be fitted onto the outlet tube 315, and the outlet tube 315 passes through the sleeve 321. There are multiple stirring rods 322 that are evenly distributed along the circumference of the sleeve 321, and the bottom of the stirring rod 322 is lower than the bottom of the outlet tube 315 in the vertical direction. The first motor 323 can be a DC motor or an AC motor, and drives the sleeve 321 to rotate through gear transmission. When the first motor 323 drives the sleeve rod 321 to rotate, the stirring rod 322 rotates accordingly, mixing the solvent and sample in the sample cup 2 evenly. At the same time as adding solvent, the sample and solvent in the sample cup 2 can be stirred and mixed, which can improve the mixing effect of the sample and solvent and make the mixing more efficient.

[0045] Reference Figure 2The sample detection unit 4 includes a spectral detection module 41, a chromatographic detection module 42, and an infrared detection module 43 integrated within the main body 1 of the device. The spectral detection module 41 can be an inductively coupled plasma atomic emission spectrometer or an atomic fluorescence spectrometer, used to detect heavy metals and specific elements in the sample. The chromatographic detection module 42 can be a gas chromatography-mass spectrometry system, used to detect organic matter in the sample. The infrared detection module 43 can be an infrared oil analyzer, used to detect waste oil in the sample. These detection modules are integrated within the main body 1, saving space and improving detection efficiency. Furthermore, specific detection modules can also be equipped for other hazardous substances in solid waste and integrated within the main body 1.

[0046] Reference Figure 2 and Figure 5 The sample transport unit 5 includes a transport frame 51 rotatably mounted within the main body 1, and a second motor 52 for driving the transport frame 51 to rotate. The transport frame 51 is rotatably connected to the main body 1 via bearings. The second motor 52 can be a stepper motor or a servo motor, and its output shaft is connected to the rotating shaft of the transport frame 51 via a coupling to drive the transport frame 51 to rotate. The sample cup 2 is fixedly mounted on the transport frame 51. When the second motor 52 drives the transport frame 51 to rotate, the sample cup 2 rotates accordingly and sequentially reaches the spectral detection module 41, the chromatographic detection module 42, and the infrared detection module 43. Alternatively, the transport frame 51 of the sample transport unit 5 can also be installed horizontally within the main body 1 and driven by a cylinder, linear motor, or chain drive, as long as it can transport the sample cup 2 to each detection module.

[0047] Reference Figure 6 and Figure 7The sampling unit 6 is equipped with multiple units, each corresponding to a detection module in the sample detection unit 4. The sampling unit 6 includes a rotating frame 61 rotatably mounted within the main body 1, a third motor 62 driving the rotating frame 61 to rotate, a sampling frame 63 slidably mounted vertically on the rotating frame 61, a second driving component 64 driving the sampling frame 63 to slide vertically, a sampling tube 65 fixedly mounted on the sampling frame 63, and a positive / negative pressure module 66 for drawing samples from the sample cup 2 into the sampling tube 65 or pushing samples out of the sampling tube 65. The rotating frame 61 can be a frame structure composed of metal rods, rotatably connected to the conveyor frame 51 via bearings, with its rotation axis vertically positioned. The third motor 62 can be a DC motor or an AC motor, fixedly mounted within the main body 1, driving the rotating frame 61 to rotate via gear transmission, aligning the sampling tube 65 with the sample cup 2 or the detection area of ​​each detection module. The sampling frame 63 is slidably connected to the rotating frame 61 via a guide rail. The second driving component 64 can be an electric push rod or a cylinder, mounted on the rotating frame 61, to drive the sampling frame 63 to slide vertically, so that the sampling tube 65 is inserted into the sample cup 2 or close to the detection area of ​​each detection module. The sampling tube 65 is generally a glass tube or a plastic tube with an open bottom end, and the outer diameter of the bottom of the sampling tube 65 gradually decreases towards the bottom end of the sampling tube 65, which facilitates the aspiration and dripping of the sample.

[0048] Reference Figure 6 and Figure 7 The positive and negative pressure module 66 includes an air pump 661 mounted on the main body 1, an airflow pipe 662 connecting the air pump 661 and the sampling tube 65, and a piston 663 slidably disposed inside the sampling tube 65. The piston 663 is adapted to the interior of the sampling tube 65, and the end of the airflow pipe 662 that connects to the sampling tube 65 is located on the side of the piston 663 away from the bottom opening of the sampling tube 65. A third motor 62 drives the rotating frame 61 to rotate, aligning the sampling tube 65 with the sample cup 2. The second drive unit 64 is activated, causing the sampling frame 63 to descend, inserting the sampling tube 65 into the sample cup 2. The air pump 661 is activated, generating negative pressure to draw the sample into the sampling tube 65. Afterward, the sampling tube 65 rises and detaches from the sample cup 2. The rotating frame 61 is rotated again, aligning the sampling tube 65 with the detection area of ​​the detection module. The sampling tube 65 is driven to descend and approach the detection area. The air pump 661 is activated, generating positive pressure to push the sample out of the sampling tube 65 and place it in the detection area.

[0049] Reference Figure 8A vent 21 is located at the bottom center of sample cup 2. A telescopic rod 22 slides through the vent 21. The telescopic rod 22 is vertically positioned. A third driving component 53, which can be an electric push rod or a cylinder, is provided on the conveyor frame 51 to drive the telescopic rod 22 to slide. The telescopic rod 22 is raised and lowered. A sealing plug 23 is provided at the top of the telescopic rod 22. The sealing plug 23 is adapted to the vent 21 to seal the vent 21. A waste liquid tank 11 is provided inside the main body 1. The waste liquid tank 11 is located in the unloading area of ​​the main body 1. A waste liquid outlet 12 communicating with the waste liquid tank 11 is provided on the side wall of the main body 1. A guide plate 54 is provided on the conveyor frame 51 at the bottom of sample cup 2. The guide plate 54 is inclined and is used to guide the sample solution discharged from the vent 21 into the waste liquid tank 11. The telescopic rod 22 passes through the guide plate 54. After the test is completed, the conveyor frame 51 moves the sample cup 2 to the unloading area of ​​the main body 1. The third drive component 53 drives the telescopic rod 22 to rise, the sealing plug 23 moves upward and opens the drain port 21. The sample solution in the sample cup 2 flows out through the drain port 21 and flows into the waste liquid tank 11 through the guide plate 54. This achieves rapid cleaning of the sample solution inside the sample cup 2.

[0050] Reference Figure 8 and Figure 9In addition, the main body 1 of the equipment is also equipped with a cleaning assembly 8 for cleaning the sample cups 2. Specifically, the cleaning assembly 8 includes a water tank 81, a guide pipe 82 communicating with the water tank 81, a water pump 83 for guiding water from the water tank 81 into the guide pipe 82, a cover plate 84 slidably disposed in the main body 1 of the equipment, a fourth driving component 85 for driving the cover plate 84 to slide, a rinsing pipe 86 surrounding the bottom of the cover plate 84 and communicating with the guide pipe 82, and several nozzles 87 communicating with the rinsing pipe 86. The water tank 81 is generally made of plastic or stainless steel and is used to store cleaning water. The guide pipe 82 is a flexible hose used to cooperate with the up and down movement of the cover plate 84. The water pump 83 can be a centrifugal pump or a submersible pump 83 used to transport water from the water tank 81 to the guide pipe 82. The cover plate 84 can be a structure made of metal plate, and a sealing gasket is provided at the bottom of the cover plate 84. The fourth driving component 85 can be an electric push rod or a cylinder, installed in the main body 1 of the equipment, and its movable rod is fixedly connected to the cover plate 84 to drive the cover plate 84 to move up and down. The flushing pipe 86 is generally a stainless steel pipe, which is arranged around the bottom of the cover plate 84. The nozzles 87 can be fan-shaped nozzles 87 or cone-shaped nozzles 87, and each nozzle 87 is evenly distributed along the circumference of the flushing pipe 86. When cleaning the inside of sample cup 2, the fourth driving component 85 drives the cover plate 84 to slide, so that the cover plate 84 covers the top of sample cup 2, and the gap between the cover plate 84 and sample cup 2 is sealed by the sealing gasket. The water pump 83 is started to guide the water in the water tank 81 into the guide pipe 82, and then spray it out through the rinsing pipe 86 and the nozzle 87 in sequence to rinse the inside of sample cup 2. The rinsing water is discharged through the drain port 21 at the bottom of sample cup 2, realizing rapid cleaning of the inside of sample cup 2. Moreover, by covering the top of sample cup 2 with the cover plate 84, water can be prevented from splashing out from the top of sample cup 2.

[0051] Reference Figure 8 and Figure 9 Furthermore, an air cylinder 88 is fixedly installed at the bottom of the cover plate 84. The air cylinder 88 is used to insert into the sample cup 2. Several air outlets are provided on the side wall of the air cylinder 88 along its circumference. A hot air blower 13 is provided on the main body 1 of the device. The hot air blower 13 is connected to a hot air pipe 14, which is connected to the air cylinder 88. The air cylinder 88 is generally a metal tube, vertically installed in the middle of the cover plate 84 to facilitate insertion into the sample cup 2. The hot air blower 13 generates hot air, which is delivered to the air cylinder 88 through the hot air pipe 14. The hot air is sprayed out from the air outlets to dry the sample cup 2, thereby increasing the drying speed of the sample cup 2 and preventing residual moisture from affecting subsequent detection.

[0052] The implementation principle of the hazardous substance detection device for solid waste in this application embodiment is as follows: This application integrates the spectral detection module 41, the chromatographic detection module 42 and the infrared detection module 43 into the main body 1 of the device. The sample delivery unit 5 sequentially delivers the sample cup 2 to each detection module, and the sampling unit 6 takes samples for detection. Finally, the data output unit 7 outputs the results, realizing one-stop detection of multiple hazardous substances. This avoids the problem of a lengthy detection process caused by the independent operation of multiple devices, reduces the number of sample processing steps, effectively reduces detection time and labor costs, and meets the needs of efficient and rapid detection.

[0053] This application also discloses a detection method for a hazardous substance detection device for solid waste, comprising the following steps:

[0054] S1. Place the sample to be tested into sample cup 2. Before placing the sample into sample cup 2, the sample needs to be crushed, and the amount of sample should be appropriate to facilitate subsequent processing and testing.

[0055] S2. Sample cup 2 is transported to sample processing unit 3 via sample delivery unit 5. Solvent is added to sample cup 2 via solvent addition module 31, and the solvent is mixed with the sample via mixing module 32. Liquid supply pump 313 is started to add solvent from solvent tank 311 to sample cup 2 through solvent delivery pipe 312 and outlet pipe 315. At the same time, first motor 323 is started to drive stirring rod 322 to rotate, so that solvent and sample are mixed evenly.

[0056] S3. Start the sample delivery unit 5 to deliver the sample cup 2, which is mixed with the solvent, to the spectroscopic detection module 41. Start the second motor 52 to drive the delivery frame 51 to rotate and deliver the sample cup 2 to the detection position of the spectroscopic detection module 41.

[0057] S4. Start the sampling unit 6 to remove the sample from the sample cup 2 and place it in the detection area of ​​the spectral detection module 41. Start the third motor 62 to rotate the rotating frame 61, aligning the sampling tube 65 with the sample cup 2. Start the second drive unit 64 to lower the sampling frame 63, inserting the sampling tube 65 into the sample cup 2. Start the air pump 661 to generate negative pressure, drawing the sample into the sampling tube 65. Then, raise the sampling tube 65 and detach it from the sample cup 2. Rotate the rotating frame 61 again to align the sampling tube 65 with the detection area of ​​the spectral detection module 41, driving the sampling tube 65 to descend and approach the detection area. Start the air pump 661 to generate positive pressure, pushing the sample out of the sampling tube 65 and placing it in the detection area.

[0058] S5. Repeat S4-S5, sequentially feeding sample cup 2 to chromatography detection module 42 and infrared detection module 43 to complete the detection by chromatography detection module 42 and infrared detection module 43. Following the above steps, sample cup 2 is sequentially fed to chromatography detection module 42 and infrared detection module 43 for corresponding detection.

[0059] S6. The detection results of the spectral detection module 41, the chromatographic detection module 42 and the infrared detection module 43 are output through the data output unit 7 respectively.

[0060] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A hazardous substance detecting apparatus for solid waste, characterized by comprising: The device comprises: a device body (1); a sample cup (2) for placing a sample to be detected; a sample processing unit (3) comprising a solvent adding module (31) for adding a solvent into the sample cup (2) and a mixing module (32) for mixing the solvent with the sample in the sample cup (2); a sample detection unit (4) comprising a spectral detection module (41), a chromatographic detection module (42) and an infrared detection module (43) integrally installed in the device body (1); a sample conveying unit (5) for conveying the sample cup (2) to the spectral detection module (41), the chromatographic detection module (42) and the infrared detection module (43) of the sample detection unit (4) in sequence; a sampling unit (6) for taking out the sample in the sample cup (2) and placing it in a detection area of the spectral detection module (41), the chromatographic detection module (42) or the infrared detection module (43); a data output unit (7) electrically connected with the sample detection unit (4) for outputting the detection results; The sample conveying unit (5) comprises a conveying frame (51) rotatably arranged in the device body (1) and a second motor (52) for driving the conveying frame (51) to rotate, and the sample cup (2) is fixedly arranged on the conveying frame (51); A relief port (21) is arranged at the middle position of the bottom of the sample cup (2), a telescopic rod (22) is slidably arranged in the relief port (21), a third driving member (53) for driving the telescopic rod (22) to slide is arranged on the conveying frame (51), a sealing plug (23) is arranged at the top end of the telescopic rod (22) for sealing the relief port (21), and a cleaning assembly (8) for cleaning the sample cup (2) is further arranged in the device body (1); The cleaning assembly (8) comprises a water tank (81), a flow guide pipe (82) in communication with the water tank (81), a water pump (83) for guiding the water in the water tank (81) into the flow guide pipe (82), a cover plate (84) slidably arranged in the device body (1) in the vertical direction, a fourth driving member (85) for driving the cover plate (84) to slide, a flushing pipe (86) arranged around the bottom of the cover plate (84) and in communication with the flow guide pipe (82), and a plurality of nozzles (87) in communication with the flushing pipe (86), the cover plate (84) is used for pressing on the top end of the sample cup (2), and the nozzles (87) are distributed equidistantly along the circumference of the flushing pipe (86); A gas cylinder (88) is further fixedly arranged at the bottom of the cover plate (84), the gas cylinder (88) is used for being inserted into the sample cup (2), a plurality of gas outlets are arranged on the side wall of the gas cylinder (88) along the circumference of the gas cylinder (88), a hot air blower (13) is arranged on the device body (1), a hot gas pipeline (14) is connected with the hot air blower (13), and the hot gas pipeline (14) is in communication with the gas cylinder (88).

2. The hazardous substance detection apparatus for solid waste according to claim 1, characterized by: The solvent adding module (31) comprises a solvent tank (311) for storing solvent, a solvent delivery pipe (312) in communication with the solvent tank (311), a liquid supply pump (313) for guiding the solvent in the solvent tank (311) into the solvent delivery pipe (312), a lifting frame (314) slidingly arranged in the vertical direction in the device body (1), a liquid outlet pipe (315) arranged on the lifting frame (314) and in communication with the solvent delivery pipe (312), and a first driving member (316) for driving the lifting frame (314) to slide, and the liquid outlet pipe (315) is used for being inserted into the sample cup (2).

3. The hazardous substance detection apparatus for solid waste according to claim 2, characterized by: The mixing module (32) comprises a sleeve rod (321) rotatably sleeved on the liquid outlet pipe (315), a stirring rod (322) fixedly arranged on the side wall of the stirring rod (322), and a first motor (323) for driving the sleeve rod (321) to rotate, the sleeve rod (321) is hollowly arranged, and the liquid outlet pipe (315) penetrates through the sleeve rod (321), and the bottom end of the stirring rod (322) is lower than the bottom end of the liquid outlet pipe (315) in the vertical direction.

4. The hazardous substance detection apparatus for solid waste according to claim 1, characterized by: The sampling unit (6) comprises a rotating frame (61) rotatably arranged in the device body (1), a third motor (62) for driving the rotating frame (61) to rotate, a sampling frame (63) slidingly arranged in the vertical direction on the rotating frame (61), a second driving member (64) for driving the sampling frame (63) to slide vertically, a sampling pipe (65) fixedly arranged on the sampling frame (63), and a positive and negative pressure module (66) for sucking the sample in the sample cup (2) into the sampling pipe (65) or pushing the sample in the sampling pipe (65) out, and the bottom end of the sampling pipe (65) is open, and the outer diameter of the bottom of the sampling pipe (65) gradually decreases in the direction close to the bottom end of the sampling pipe (65).

5. The hazardous substance detection apparatus for solid waste according to claim 4, characterized by: The positive and negative pressure module (66) comprises an air pump (661) mounted on the device body (1), air flow pipes (662) respectively in communication with the air pump (661) and the sampling pipe (65), and a piston (663) slidingly arranged in the sampling pipe (65), the piston (663) is matched with the inside of the sampling pipe (65), and the communication end of the air flow pipe (662) with the sampling pipe (65) is located on the side of the piston (663) away from the bottom opening of the sampling pipe (65).

6. The hazardous substance detection apparatus for solid waste according to claim 1, characterized by: The device body (1) is provided with a waste liquid tank (11), and the conveying frame (51) is provided with a flow guide plate (54) at the bottom of the sample cup (2), and the flow guide plate (54) is used for guiding the sample solution discharged from the discharge port (21) into the waste liquid tank (11).

7. A detection method based on the hazardous substance detection apparatus for solid waste according to any one of claims 1 to 6, characterized by, The method comprises the following steps: S1, placing the sample to be detected into the sample cup (2); S2, conveying the sample cup (2) to the sample processing unit (3) position by the sample conveying unit (5), adding solvent into the sample cup (2) by the solvent adding module (31), and mixing the solvent with the sample by the mixing module (32); S3, starting the sample conveying unit (5), and conveying the sample cup (2) mixed with the solvent to the spectral detection module (41); S4, start the sampling unit (6), take out the sample in the sample cup (2) and place it in the detection area of the spectral detection module (41); S5, repeat S4-S5, sequentially transport the sample cup (2) to the chromatographic detection module (42) and the infrared detection module (43) to complete the detection of the chromatographic detection module (42) and the infrared detection module (43); S6, output the detection results of the spectral detection module (41), the chromatographic detection module (42) and the infrared detection module (43) respectively through the data output unit (7).

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