A toy chemical toxic and harmful substance detection system
Patent Information
- Application Number
- CN202611335312.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-08-31
- Publication Date
- 2026-10-30
AI Technical Summary
[0004]采用人工抽样检测方式效率较低，且能够检测的样本数量较少，难以充分覆盖数量较多的大批量玩具，并且玩具在不同的使用环境中释放有毒有害物质的效率受到温湿度影响较大，因此在生产地、检测地和使用地的环境存在较大差异时，检测结果难以反映批量玩具整体可能存在的有毒有害物质风险，可能出现检测错漏，危害使用者健康的情况
本发明所述的一种玩具化学有毒有害物质检测系统，通过将待测样品放入到检测箱中进行自动化的检测，并通过温湿度控制装置有效模拟实际使用环境的温度、湿度，促使样品中可能存在的挥发性有害物质向外释放，并利用气体检测传感器和气相色谱质谱联用仪对气体样本进行检测，获取更加准确的检测数据，随后利用数据分析管理单元对检测数据进行自动分析，并利用风险预警管控单元基于分析结果判断检测过程是否超过安全指标有危害使用者的风险，对于其中风险较高的部分种类或者批次的玩具，应该要求返厂进行处理，保障玩具使用者的健康安全。
Smart Images
Figure CN123009166A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of hazardous substance detection technology, specifically a toy chemical toxic and hazardous substance detection system. Background Technology
[0002] Children, as a vulnerable group whose physical development is not yet fully mature, require paramount safety during play. Toys, as typical consumer products directly related to children's personal safety and health, have always been a key area of regulatory systems in various countries.
[0003] Children may face multiple risks during play, including physical injury, chemical exposure, digital privacy breaches, and cybersecurity threats. Emerging scientific evidence suggests that the harmful effects of "permanent chemicals" such as endocrine disruptors, perfluorinated and polyfluoroalkyl substances on children's health are highly insidious and long-term. Therefore, more rigorous and precise testing of toy safety and quality is needed.
[0004] Manual sampling testing is inefficient and can only detect a limited number of samples, making it difficult to fully cover a large number of toys. Furthermore, the efficiency with which toys release toxic and harmful substances in different usage environments is greatly affected by temperature and humidity. Therefore, when there are significant differences between the production site, testing site, and usage site, the test results may not reflect the overall potential risk of toxic and harmful substances in a batch of toys, and may result in testing errors or omissions, endangering the health of users. Summary of the Invention
[0005] To overcome the shortcomings of existing technologies and solve the aforementioned technical problems, this invention proposes a detection system for toxic and harmful chemical substances in toys.
[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention proposes a toy chemical toxic and harmful substance detection system, including a sample detection unit, a data analysis and management unit and a risk early warning and control unit. The sample detection unit includes a detection chamber, a gas detection sensor and a gas chromatography-mass spectrometry instrument; the detection chamber inside the detection chamber has multiple layers of placement grids distributed along the vertical direction, and the placement grids are designed to be pull-out. The testing chamber is also equipped with a temperature and humidity control device to adjust the temperature and humidity environment inside the testing chamber; a sealing plate is set on the upper side of the testing chamber, and the interior of the sealing plate is hollow to form a flow guiding cavity. The flow guiding hole at the bottom of the flow guiding cavity is connected to the interior of the placement grid, and the side wall of the flow guiding cavity is connected to the sampling hole on the side wall of the testing chamber through the release hole. A detection column is installed inside the sampling port, and a gas detection sensor is deployed on the surface of the detection column. The sampling port is connected to an external sampling tube, which collects air as a test sample and transfers it to a gas chromatograph-mass spectrometer for detection.
[0007] Preferably, a movable plate is provided at the bottom of the placement compartment, the movable plate is elastically connected to the bottom surface of the placement compartment, and an air gap is formed between the movable plate and the bottom of the placement compartment. The side wall of the air gap is connected to the temperature and humidity control device through an air hole. A limiting tube is installed at the bottom of the placement grid corresponding to the flow guide hole. The limiting tube slides through the corresponding through hole on the movable plate and extends upward to the lower side of the flow guide hole. The bottom of the limiting tube is connected to the inflation gap, and air holes are evenly arranged on the side wall of the limiting tube.
[0008] Preferably, a partition is provided on the upper surface of the movable plate in the area between adjacent limiting tubes, and the partition is slidably connected to the limiting tubes; The partition is hollow inside and communicates with the inside of the limiting tube, and the outer surface of the partition is evenly provided with ventilation holes.
[0009] Preferably, a purification screen is nested inside the sampling hole outside the detection column, and a fixing plate is provided at the end of the purification screen near the release hole; An interceptor net is nested on the outside of the purification net, and a guide plate is provided at the end of the interceptor net near the release hole; The interception net is movably connected to the inner wall of the sampling hole, while the purification net is fixedly connected to the inner wall of the sampling hole; a recycling tank is provided at the bottom of the sampling hole, and the recycling tank is connected to the outside.
[0010] Preferably, the positioning rod on the guide plate is slidably embedded into the positioning hole on the inner wall of the sampling hole, and the positioning rod is connected to the elastic element on the inner wall of the positioning hole; a vibrator is installed inside the guide plate, and the vibrator is controlled by an external controller. A flushing hole is provided in the middle of the fixed plate, and the flushing hole is connected to the purification gap between the purification net and the interception net.
[0011] Preferably, the interception net includes a filtering section and a fixed section, which are interleaved, and the filtering section is an elastic filter structure. The purification screen has a cleaning section corresponding to the filtration section and a passage section corresponding to the fixing section. The passage section is a filter screen structure.
[0012] Preferably, the filter section protrudes outward and has a trapezoidal cross-section; the cleaning section protrudes outward and has a triangular cross-section, with the conical end of the cleaning section contacting the inner surface of the filter section.
[0013] Preferably, impact holes are evenly provided on the raised end of the cleaning section, and the impact holes are connected to the area surrounded by the purification net.
[0014] The beneficial effects of this invention are as follows: The present invention discloses a toy chemical toxic and harmful substance detection system. This system automates the detection process by placing the sample into a detection chamber. A temperature and humidity control device effectively simulates the temperature and humidity of the actual usage environment, causing potentially volatile harmful substances in the sample to be released. A gas detection sensor and gas chromatography-mass spectrometry (GC-MS) are used to detect the gas sample, obtaining more accurate detection data. Subsequently, a data analysis and management unit automatically analyzes the detection data, and a risk warning and control unit determines whether the detection process exceeds safety standards and poses a risk to users based on the analysis results. For certain types or batches of toys with higher risks, the system requires return to the factory for processing, ensuring the health and safety of toy users. Attached Figure Description
[0015] The invention will now be further described with reference to the accompanying drawings.
[0016] Figure 1 This is a perspective view of the present invention; Figure 2 This is a partial sectional view taken from the frontal view in this invention; Figure 3 yes Figure 2 A magnified view of a section at point A in the middle; Figure 4 yes Figure 2 A magnified view of a section at point B in the middle; Figure 5 yes Figure 3 A magnified view of a section at point C; Figure 6 This is a three-dimensional view of the grid placement in this invention.
[0017] In the diagram: Detection box 1, gas detection sensor 2, detection chamber 11, placement grid 12, sealing plate 13, flow guide chamber 131, flow guide hole 132, release hole 133, sampling hole 14, detection column 141, recovery tank 142, movable plate 15, inflation gap 151, limit tube 152, vent hole 153, partition 154, air exchange hole 155, inflation hole 156, purification net 16, fixing plate 161, flushing hole 162, cleaning section 163, passage section 164, impact hole 165, interception net 17, flow guide plate 171, purification gap 172, filtration section 173, fixing section 174. Detailed Implementation
[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0019] Example 1: As shown in the attached diagram of the instruction manual. Figures 1-6 As shown, when testing existing toys for toxic and harmful substances, manual sampling is inefficient and can only detect a limited number of samples, making it difficult to fully cover a large number of toys. Furthermore, the efficiency of toys releasing toxic and harmful substances in different usage environments is greatly affected by temperature and humidity. Therefore, when there are significant differences between the production site, testing site, and usage site, the test results may not reflect the overall potential risk of toxic and harmful substances in a batch of toys, and may result in test errors or omissions, endangering the health of users. Therefore, this application proposes a toy chemical toxic and harmful substance detection system, including a sample detection unit, a data analysis and management unit, and a risk warning and control unit. The sample detection unit includes a detection chamber 1, a gas detection sensor 2, and a gas chromatography-mass spectrometry instrument. The detection chamber 11 inside the detection chamber 1 has multiple layers of placement grids 12 distributed along the vertical direction, and the placement grids 12 are pull-out designs. The detection chamber 1 is also equipped with a temperature and humidity control device to adjust the temperature and humidity environment inside the detection chamber 11; a sealing plate 13 is provided on the upper side of the detection chamber 11, and the interior of the sealing plate 13 is hollow to form a flow guiding cavity 131. The flow guiding hole 132 provided at the bottom of the flow guiding cavity 131 communicates with the interior of the placement grid 12, and the side wall of the flow guiding cavity 131 communicates with the sampling hole 14 on the side wall of the detection chamber 11 through the release hole 133; The sampling hole 14 is equipped with a detection column 141, and the gas detection sensor 2 is deployed on the surface of the detection column 141. The sampling hole 14 is connected to the sampling tube, and the sampling tube collects air as a detection sample and transfers it to the gas chromatograph-mass spectrometer for detection.
[0020] Specific workflow: During use, for a large number of small rubber or plush toys, a portion of the toys are randomly selected from each batch according to their production numbers as test samples, which are then sent to the sample testing unit to test the concentration of potentially toxic and harmful substances in the samples. During the testing process, different testing methods can be used for different types of toxic and harmful substances that may be present in the toys. The specific method can be selected based on the actual situation. The testing methods used include total fluorine testing, total organic fluorine testing, and targeted PFAS testing for perfluorinated and polyfluoroalkyl compounds, or gas chromatography, liquid chromatography, and combined techniques for bisphenol compounds. This embodiment targets the detection of harmful volatile substances such as formaldehyde. It employs a method that simulates the usage environment to induce the toy sample to release toxic and harmful substances and performs real-time detection. Specifically, during the detection process, the detection chamber 1 is first opened, and the placement compartment 12 is pulled out. The placement compartment 12 is connected by a corresponding slide rail. The samples to be tested are placed into different placement compartments 12 according to different batches or different types, and after being numbered accordingly, the detection chamber 11 is closed to begin the detection operation. To simulate the usage environment, the placement compartment 12 and the sealing plate 13 work together to form a relatively enclosed internal environment. The heater and humidifier in the temperature and humidity control device are then activated to act on the internal area of the placement compartment 12. The temperature and humidity sensors inside the placement compartment 12 monitor environmental changes in real time, thereby accurately adjusting the environment inside the detection chamber 11 to effectively simulate the temperature and humidity of the actual usage environment. Alternatively, an ultraviolet lamp can be installed on the underside of the sealing plate 13 to simulate the potential release of harmful volatile substances from ultraviolet radiation during outdoor use of the sample. The specific environmental parameters mentioned above can be simulated based on the local environment of the sample buyer's location, or the usage environment can be appropriately worsened according to the testing needs to simulate the external influences on the sample during continuous use. During this process, changes in the external environment cause volatile harmful substances in the sample to be released outward. The harmful substances enter the guide cavity 131 inside the corresponding closed plate 13 with the air upward, and then pass outward through the sampling hole 14 to contact the detection column 141. The detection column 141 is equipped with a gas detection sensor 2, which can perform preliminary detection of the composition and concentration of harmful substances in the air in real time. Specifically, the gas detection sensor 2 can be an existing VOC gas sensor, such as an electrochemical formaldehyde sensor or a photoacoustic spectroscopy sensor, arranged on the outer surface of the detection column 141 to contact and preliminarily detect the types and concentrations of harmful substances flowing into the air. The detection results are displayed on the display interface on the outside of the detection chamber 1, allowing the testing personnel to understand and analyze them in real time. If it is determined that the concentration of harmful substances in the sample may exceed the requirements, a sampling tube can be connected to the opening in the middle of the detection column 141 to extract a portion of the gas sample, which is then sent to the laboratory for in-depth detection using gas chromatography-mass spectrometry (GC-MS) for more precise detection. The system can obtain more accurate testing data, and then use the data analysis and management unit to automatically analyze the testing data. The analysis software can automatically compare the data with the environmental standards for toys in the buyer's region to analyze whether the standards are exceeded. Based on the analysis results, the risk warning and control unit can determine whether the testing process exceeds safety indicators and poses a risk to users. For some types or batches of toys with higher risks, they should be required to be returned to the factory for processing, and the production process should be traced to determine which production step caused the exceedance. The corresponding adjustments should be made in a timely manner until the produced toys meet the buyer's local requirements and ensure the health and safety of toy users. Example 2: Based on Embodiment 1, in order to ensure that the influence of the external environment fully affects the toy samples piled in the placement compartment 12, a movable plate 15 is provided at the bottom of the placement compartment 12. The movable plate 15 is elastically connected to the bottom surface of the placement compartment 12. Specifically, the edge of the movable plate 15 can slide in contact with the inner wall of the placement compartment 12, and the bottom surface of the movable plate 15 is connected to the bottom of the placement compartment 12 by an elastic element such as a spring, thus achieving an elastic connection of the movable plate 15. An inflation gap 151 is formed between the movable plate 15 and the bottom of the placement compartment 12. The side wall of the inflation gap 151 communicates with the temperature and humidity control device through an inflation hole 156. The temperature and humidity control device includes an air pump, a heater, and a humidifier. The air outlet opening of the air pump is located on the inner wall of the detection chamber 11. When the placement compartment 12 is installed in place, the inflation hole 156 on the side wall of the inflation gap 151 is connected to the air outlet opening of the air pump. A limiting tube 152 is provided at the bottom of the placement grid 12 corresponding to the flow guide hole 132. The limiting tube 152 slides through the corresponding through hole on the movable plate 15 and extends upward to the lower side of the flow guide hole 132. The bottom of the limiting tube 152 is connected to the inflation gap 151, and ventilation holes 153 are evenly provided on the side wall of the limiting tube 152.
[0021] Specific workflow: Based on the specific workflow in Example 1, when the toy samples to be tested are piled up inside the placement compartment 12, the vertically extending limiting tube 152 is located in the gap area between the samples. When the temperature and humidity control device is activated, the air pump device can send the heater and the airflow processed by the heater into the inflation gap 151, thereby increasing the air pressure in the inflation gap 151 and causing the airflow to flow into the internal area of the placement compartment 12 along the connected limiting tube 152. The limiting tube 152 serves as a vertical flow path, guiding the airflow to flow vertically and enter laterally into the internal area of the placement compartment 12 from the ventilation holes 153 evenly arranged on the side wall. It laterally penetrates into the gap between the samples to be tested and makes full contact with the samples, thereby keeping the temperature and humidity changes in different areas inside the placement compartment 12 similar and close to the test requirements, or increasing the extreme requirements of the temperature and humidity environment, so that the inside of the placement compartment 12 is under higher pressure and temperature, and the release of harmful substances from the samples under extreme conditions is tested. During the above process, the outer opening of sampling hole 14 remains closed, and sampling hole 14 is connected to placement grid 12, enabling detection column 141 to perform online detection of the release of harmful substances inside placement grid 12. When sampling is required, the air pump is turned off and the outer opening of sampling hole 14 is opened to connect it to the external sampling tube. At this time, the airflow in placement grid 12 is accelerated into sampling hole 14 under the action of pressure difference, realizing sampling detection. During this process, limiting tube 152 also serves as a gas flow channel, located in the gap of the sample to be tested, facilitating the airflow of sample gaps in different vertical height areas to enter the limiting tube 152, and then enter upward into sampling hole 14, realizing the full detection of samples in different areas inside placement grid 12. This allows the detection results to more comprehensively reflect the overall release of harmful substances from toy samples in placement grid 12, reducing the possibility of omissions or inadequacies in detection.
[0022] Example 3: Based on Embodiment 2, a partition 154 is provided on the upper surface of the movable plate 15 in the area between adjacent limiting tubes 152, and the partition 154 is slidably connected to the limiting tubes 152. The partition 154 is hollow inside. The vent 153 on the side wall of the limiting tube 152, which overlaps with the partition 154, is connected to the hollow part inside the partition 154. The outer surface of the partition 154 is uniformly provided with ventilation holes 155.
[0023] Specific workflow: Based on the specific workflow in Example 2, the partition 154 set on the upper side of the movable plate 15 divides the interior of the placement grid 12 into multiple smaller areas. The height of the partition 154 is lower than the height of the interior area of the placement grid 12, so that the partition 154 is embedded in the gap between the stacked samples, thereby expanding the gap size between the samples. During the airflow process, part of the airflow flowing in from the limiting tube 152 enters the hollow area inside the partition 154, and finally flows from the ventilation hole 155 into the sample gap, making full contact with the sample surface, thus expanding the range of influence of the airflow and making the temperature and humidity environmental parameters of different areas inside the placement grid 12 similar. During the sampling and testing process, the air in the sample gap area can directly enter the interior of the partition 154, and then flow into the limiting tube 152 and into the external sampling tube, expanding the sampling coverage area. This allows the collected airflow samples to more fully reflect the overall situation of the samples accumulated inside the placement grid 12, thereby improving the accuracy of the test.
[0024] Furthermore, a vibrator can be installed inside the movable plate 15 and activated by an external controller. In conjunction with the air pressure changes during the inflation process of the inflation gap 151, the movable plate 15 and the partition 154 will vibrate vertically, and the vibration will be transmitted to the stacked toy samples to be tested, increasing the gap between the toy samples and promoting the diffusion of airflow in the gap area. This also facilitates more effective collection of toxic and harmful substances diffused in the gap area during sampling, thereby improving the accuracy of the test.
[0025] Example 4: Based on Embodiment 3, a purification net 16 is nested inside the sampling hole 14 outside the detection column 141. A fixing plate 161 is provided at the end of the purification net 16 near the release hole 133. An interception net 17 is nested outside the purification net 16. A guide plate 171 is provided at the end of the interception net 17 near the release hole 133. The interception net 17 is movably connected to the inner wall of the sampling hole 14, and the purification net 16 is fixedly connected to the inner wall of the sampling hole 14. A recovery trough 142 is provided at the bottom of the sampling hole 14, and the recovery trough 142 communicates with the outside. The positioning rod on the guide plate 171 is slidably embedded into the positioning hole on the inner wall of the sampling hole 14, and the positioning rod is connected to the elastic element on the inner wall of the positioning hole; the middle part of the fixed plate 161 is provided with a flushing hole 162, which is connected to the purification gap 172 between the purification net 16 and the interception net 17, and a one-way valve can be provided in the flushing hole 162 so that the cleaning airflow flowing from the inside to the outside can be guided into the purification gap 172 only during the cleaning process; Specific workflow: Based on the specific workflow in Example 3, during the gas sampling and detection process, the airflow from the placement grid 12 passes through the release hole 133 and enters the sampling hole 14. A guide plate 171 is positioned near the release hole 133 inside the sampling hole 14. The guide plate 171 is a closed plate structure. After the airflow is obstructed, it diffuses outward into the annular gap between the interceptor net 17 and the inner wall of the sampling hole 14, making full contact with the surface of the interceptor net 17. The opening in the middle of the detection column 141 communicates with the outer sampling tube. The negative pressure adsorption effect causes the airflow to accelerate inward, penetrating the interceptor net 17 and the purification net 16, separating the debris and impurities mixed in the gas. After contacting the detection column 141, the airflow flows to the outer sampling tube, preventing debris and impurities from adhering to the detection column 141 and affecting the normal operation of the gas detection sensor 2. This also prevents these debris and impurities from flowing out with the sampling tube, thus increasing the depth detection error in subsequent laboratory testing. Furthermore, continuous operation has led to the accumulation of impurities and debris on the outer side of the interceptor net 17. In order to effectively clean the outer side of the interceptor net 17, the sampling tube is replaced with a cleaning tube, which is connected to the fan equipment. The purified cleaning airflow is introduced into the sampling hole 14, and the release hole 133 is closed at the same time. Then, the recovery tank 142 is connected to the outside, so that the cleaning airflow enters the area surrounded by the purification net 16 from the middle opening of the detection column 141 and is released outward. This causes the purification net 16 and the interceptor net 17 to be flushed by the airflow from the inside out, which removes the debris and impurities adhering to the outer side of the interceptor net 17. The airflow then flows from the recovery tank 142 on the lower side to the air purification device on the outside, thus purifying and cleaning the interceptor net 17 and the purification net 16 and ensuring their subsequent normal operation.
[0026] Example 5: Based on Embodiment 4, the interception net 17 includes a filtering section 173 and a fixed section 174, the filtering section 173 and the fixed section 174 are interleaved, and the filtering section 173 is an elastic filter structure. The purification mesh 16 has a cleaning section 163 at the part corresponding to the filter section 173, and a passage section 164 at the part corresponding to the fixed section 174. The passage section 164 is an elastic filter structure. The filter section 173 protrudes outward and has a trapezoidal cross section. The cleaning section 163 protrudes outward and has a triangular cross section. The conical end of the cleaning section 163 contacts the inner surface of the filter section 173. The guide plate 171 is equipped with a vibrator, which can be a miniature vibration motor. The vibrator is controlled by an external controller. The cleaning section 163 has impact holes 165 evenly arranged on the protruding end. The impact holes 165 are connected to the area surrounded by the purification net 16. Specific workflow: Based on the specific workflow in Example 4, the interception net 17 is formed by the alternating distribution and combination of filter section 173 and fixed section 174. The fixed section 174 is a closed structure, while only the filter section 173 is an elastic mesh structure. The outward protrusion of the filter section 173 provides elastic deformation margin for the entire interception net 17. Normal sampling airflow enters and impacts the guide plate 171. The guide plate 171 can drive the interception net 17 to move and deform laterally. The deformation effect is concentrated on the filter section 173, preventing the debris and impurities separated from the filter section 173 from adhering to each other and affecting the passage. During the cleaning process, the outward impact of the cleaning airflow, combined with the vibration of the vibrator inside the guide plate 171, causes the filter section 173 to vibrate and deform further, accelerating the separation of the debris and impurities adhering to the surface and ensuring the passage of the filter section 173. Furthermore, when the guide plate 171 drives the interceptor net 17 to reciprocate laterally, the cleaning airflow passes through the passage section 164 from the inside to the outside and enters the purification gap 172. After being intercepted by the fixed section 174, it flows towards the area near the filter section 173. Because the conical protruding end of the cleaning section 163 slides and embeds into the outwardly recessed part of the filter section 173, and as the filter section 173 is deformed and straightened, it approaches the conical end of the contact cleaning section 163, thus, with the reciprocating sliding of the conical end of the cleaning section 163, on the one hand, the friction scraping action... The external impact causes the debris and impurities adhering to the outer surface of the filter section 173 to fall off. On the other hand, the airflow that is squeezed and gathered at the end of the reciprocating cleaning section 163 in the recessed part of the filter section 173 is accelerated to penetrate the outer surface of the cleaning filter section 173. Combined with the impact airflow concentrated and released by the impact hole 165 at the end of the cleaning section 163, the debris and impurities are further accelerated to fall off. Finally, they flow into the recovery tank 142 under the action of the airflow, so as to achieve full purification of the purification net 16 and the interception net 17, thereby ensuring the normal operation of the test box 1 of this application.
[0027] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.
Claims
1. A toy chemical toxic and hazardous substance detection system, comprising a sample detection unit, a data analysis and management unit, and a risk early warning and control unit, characterized in that: The sample detection unit includes a detection chamber (1), a gas detection sensor (2), and a gas chromatograph-mass spectrometer; the detection chamber (11) inside the detection chamber (1) has multiple layers of placement grids (12) distributed along the vertical direction, and the placement grids (12) are pull-out designs; The detection box (1) is also equipped with a temperature and humidity control device to adjust the temperature and humidity environment inside the detection chamber (11); a sealing plate (13) is provided on the upper side of the detection chamber (11), and the interior of the sealing plate (13) is hollow to form a flow guide cavity (131). The flow guide hole (132) provided at the bottom of the flow guide cavity (131) is connected to the interior of the placement grid (12), and the side wall of the flow guide cavity (131) is connected to the sampling hole (14) on the side wall of the detection chamber (11) through the release hole (133); The sampling hole (14) is equipped with a detection column (141), and the gas detection sensor (2) is deployed on the surface of the detection column (141). The sampling hole (14) is connected to an external sampling tube. The sampling tube collects air as a detection sample and transfers it to the gas chromatograph-mass spectrometer for detection.
2. The toy chemical toxic and harmful substance detection system according to claim 1, characterized in that: A movable plate (15) is provided at the bottom of the placement grid (12). The movable plate (15) is elastically connected to the bottom surface of the placement grid (12), and an inflation gap (151) is formed between the movable plate (15) and the bottom of the placement grid (12). The side wall of the inflation gap (151) is connected to the temperature and humidity control device through an inflation hole (156). A limiting tube (152) is provided at the bottom of the placement grid (12) corresponding to the flow guide hole (132). The limiting tube (152) slides through the corresponding through hole on the movable plate (15) and extends upward to the lower side of the flow guide hole (132). The bottom of the limiting tube (152) is connected to the inflation gap (151), and ventilation holes (153) are evenly provided on the side wall of the limiting tube (152).
3. The toy chemical toxic and harmful substance detection system according to claim 2, characterized in that: A partition (154) is provided on the upper surface of the movable plate (15) in the area between adjacent limiting tubes (152), and the partition (154) is slidably connected to the limiting tubes (152); The partition (154) is hollow inside and communicates with the inside of the limiting tube (152), and the outer surface of the partition (154) is uniformly provided with ventilation holes (155).
4. The toy chemical toxic and harmful substance detection system according to claim 1, characterized in that: Inside the sampling hole (14), a purification mesh (16) is nested outside the detection column (141), and a fixing plate (161) is provided at the end of the purification mesh (16) near the release hole (133); An interceptor net (17) is nested on the outside of the purification net (16), and a guide plate (171) is provided at the end of the interceptor net (17) near the release hole (133); The interception net (17) is movably connected to the inner wall of the sampling hole (14), and the purification net (16) is fixedly connected to the inner wall of the sampling hole (14); a recycling tank (142) is provided at the bottom of the sampling hole (14), and the recycling tank (142) is connected to the outside.
5. The toy chemical toxic and harmful substance detection system according to claim 4, characterized in that: The positioning rod on the guide plate (171) is slidably embedded into the positioning hole on the inner wall of the sampling hole (14), and the positioning rod is connected to the elastic element on the inner wall of the positioning hole; a vibrator is installed inside the guide plate (171), and the vibrator is controlled by an external controller. A flushing hole (162) is provided in the middle of the fixed plate (161), and the flushing hole (162) is connected to the purification gap (172) between the purification net (16) and the interception net (17).
6. The toy chemical toxic and harmful substance detection system according to claim 5, characterized in that: The interception net (17) includes a filtering section (173) and a fixed section (174). The filtering section (173) and the fixed section (174) are interleaved. The filtering section (173) is an elastic filter structure. The purification mesh (16) has a cleaning section (163) corresponding to the filter section (173) and a passage section (164) corresponding to the fixing section (174). The passage section (164) is a filter mesh structure.
7. The toy chemical toxic and harmful substance detection system according to claim 6, characterized in that: The filter section (173) protrudes outward and has a trapezoidal cross section; the cleaning section (163) protrudes outward and has a triangular cross section, with the conical end of the cleaning section (163) in contact with the inner surface of the filter section (173).
8. The toy chemical toxic and harmful substance detection system according to claim 7, characterized in that: Impact holes (165) are evenly provided on the raised end of the cleaning section (163), and the impact holes (165) are connected to the area surrounded by the purification net (16).