Dust detector for public place sanitation detection

Abstract

The utility model discloses a dust detector for public place sanitation detection, which comprises a detector body, a sampling head is assembled at the top of the detector body, a display is arranged on the detector body, an air inlet pipe, a detection box, a miniature vacuum suction pump and an air outlet pipe which are sequentially connected are assembled in the detector body, the sampling head is detachably connected with the air inlet pipe, and the detection box is detachably connected with the miniature vacuum suction pump. A detector is connected to the detection box, a processor and a power source are further arranged in the detector body, the detector transmits detection data signals to the processor for processing and transmits processed results to the displayer for displaying, and the miniature vacuum suction pump, the detector, the processor and the displayer are all electrically connected with the power source. According to the utility model, the sampling head is detachably connected with the air inlet pipe, so that the problems that the sampling head is difficult to disassemble and tedious to replace in the traditional integrated design are effectively solved, the efficiency of detection work is favorably improved, and meanwhile, dust-containing air is sucked into the detection box for detection through the micro vacuum pump, so that the sampling accuracy and efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of environmental monitoring technology, and in particular to a dust detector for public place hygiene testing. Background Technology

[0002] In public places, especially in densely populated environments, air quality is crucial to people's health. Dust detectors used for hygiene testing in public places are mainly used to monitor and assess the dust concentration in the air in these places in real time.

[0003] A dust detector for hygiene testing typically consists of a sampling system, a detection system, and a data processing and display system. Its working principle is to use the sampling system to collect dust from the air into the instrument, the detection system to measure the collected dust using various technologies, convert the physical quantities of the dust into electrical signals, and then the data processing and display system to analyze and process the electrical signals and display the dust concentration and other relevant parameters in intuitive numerical or graphical form, thereby achieving rapid and accurate detection of dust concentration in the environment.

[0004] Traditional dust detectors for hygiene testing often employ an integrated design of the sampler and detector, primarily to simplify the overall instrument structure and reduce costs. However, this approach has several drawbacks. Firstly, due to the tight integration of the sampling head and detector, dust particles inevitably adhere to and accumulate inside and on the surface of the sampling head during sample collection, making it difficult for maintenance personnel to easily disassemble the sampling head independently. Secondly, when different types of sampling heads are needed to meet varying testing environments and requirements, the integrated design makes replacement extremely cumbersome. This requires not only deep disassembly of the entire instrument but also complex calibration and debugging of the entire system after reassembly, severely impacting the efficiency and timeliness of testing. Furthermore, the various components within the dust detector work together, generating heat during operation. This heat accumulation problem is exacerbated, especially in hot summer weather, where ambient temperatures are already high, further affecting the stability and accuracy of the tests.

[0005] Based on this, this utility model proposes a dust detector for public place hygiene testing to solve the above problems. Utility Model Content

[0006] To overcome the above deficiencies, this utility model provides a dust detector for public place hygiene testing, which can at least solve some of the defects existing in the prior art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A dust detector for public place hygiene testing includes a detector body, a sampling head mounted on the top of the detector body, a display on the surface of the detector body, and an air inlet pipe, a detection chamber, a miniature vacuum pump, and an air outlet pipe connected in sequence inside the detector body. The sampling head is detachably connected to the end of the air inlet pipe away from the detection chamber. A detector for detecting the dust content in the air flowing through the detection chamber is connected to the detection chamber. The detector body also contains a processor and a power supply. The detector transmits the detection data signal to the processor for processing and transmits the processed result to the display for display. The miniature vacuum pump, detector, processor, and display are all electrically connected to the power supply.

[0009] Furthermore, the sampling head is fixedly connected to the air inlet pipe by a thread.

[0010] Furthermore, the sampling head, air inlet pipe, detection box, miniature vacuum pump, and air outlet pipe are located on the same axis.

[0011] Furthermore, the detector body is also equipped with an automatic heat dissipation component for dissipating heat from the inside of the detector body.

[0012] Furthermore, the automatic heat dissipation assembly includes a controller, a temperature sensor, a fan, heat dissipation holes, and a heat sink. The controller is fixedly connected inside the detector body. The temperature sensor is located in the middle of the detector body near the detector. The fan, heat dissipation holes, and heat sink are located on the side wall of the detector body. The temperature sensor and the fan are both electrically connected to the controller.

[0013] Furthermore, the heat dissipation holes and heat sinks are disposed on the heat dissipation plate. The heat dissipation holes are opened in the middle of the heat dissipation plate. The heat sinks are arranged around the heat dissipation plate at equal intervals along the circumference of the heat dissipation plate, and each heat sink extends radially along the heat dissipation plate. The side wall of the detector body is provided with a mounting hole. The heat dissipation plate is disposed in the mounting hole, and the inner side wall of the mounting hole is provided with a insertion groove for inserting and fixing the heat sink.

[0014] Furthermore, the fan and the heat sink are arranged opposite each other on two side walls of the detector body, and the detection box is located between the fan and the heat sink.

[0015] Furthermore, the detector body is equipped with an alarm and a buzzer, both of which are electrically connected to the processor.

[0016] Furthermore, the detector body is provided with function keys, which are electrically connected to the processor.

[0017] Furthermore, the bottom of the detector body is provided with a charging port for supplying power to the power source.

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

[0019] 1. In this utility model, by designing the sampling head and the air inlet pipe to be detachably connected, when the sampling head needs to be cleaned due to dust accumulation, or when the sampling head needs to be replaced to meet different testing environments and needs, only the sampling head needs to be disassembled, which can easily disassemble and replace the sampling head. This effectively solves the problem of difficult disassembly and cumbersome replacement of the sampling head in the traditional integrated design, and helps to improve the efficiency of testing work.

[0020] 2. In this utility model, a miniature vacuum pump is used to draw dust-laden air from public places into a detection chamber for testing, which improves the accuracy and efficiency of sampling and avoids the influence of the external environment on the test results, thus ensuring the accuracy of the test.

[0021] 3. In this utility model, the internal temperature of the instrument is monitored in real time by a temperature sensor. Once the temperature exceeds the set value, the signal is transmitted to the controller, which then controls the fan to run, accelerates the airflow, and combines the heat dissipation holes and heat sinks to dissipate heat. Automated heat dissipation can ensure that the instrument maintains a stable working state during long-term operation, thereby improving the reliability and stability of the instrument operation. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of a dust detector for public place hygiene testing proposed in this utility model;

[0023] Figure 2 This is a schematic diagram of the exhaust pipe of a dust detector for public place hygiene testing proposed in this utility model;

[0024] Figure 3 This is a schematic diagram of the internal structure of a dust detector for public place hygiene testing proposed in this utility model;

[0025] Figure 4 for Figure 3 Enlarged schematic diagram of part A in the middle.

[0026] Legend:

[0027] 1. Detector body; 2. Sampling head; 3. Air inlet pipe; 4. Detection box; 5. Miniature vacuum pump; 6. Detector; 7. Processor; 8. Power supply; 9. Display; 10. Function key; 11. Alarm; 12. Buzzer; 13. Air outlet pipe; 14. Charging port; 15. External thread; 16. Nut; 17. Heat sink; 18. Controller; 19. Temperature sensor; 20. Fan; 21. Heat dissipation holes; 22. Heat sink. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Reference Figures 1 to 3 This embodiment provides a dust detector for public place hygiene testing, including a detector body 1. A sampling head 2 is mounted on the top of the detector body 1. A display 9 is provided on the surface of the detector body 1. An air inlet pipe 3, a detection box 4, a miniature vacuum pump 5, and an air outlet pipe 13 are sequentially connected inside the detector body 1. The sampling head 2 is detachably connected to one end of the air inlet pipe 3 away from the detection box 4. A detector 6 for detecting the dust content in the air flowing through the detection box 4 is connected to the detection box 4. A processor 7 and a power supply 8 are also provided inside the detector body 1. The detector 6 transmits the detection data signal to the processor 7 for processing and transmits the processed result to the display 9 for display. The miniature vacuum pump 5, the detector 6, the processor 7, and the display 9 are all electrically connected to the power supply 8.

[0030] During operation, after the detector body 1 is started, the micro vacuum pump 5 operates stably, creating a negative pressure environment in the air inlet pipe 3. This allows the outside air carrying dust to enter the air inlet pipe 3 through the sampling head 2, and then guides the dust into the detection chamber 4 with the airflow. At the same time, the detector 6 detects the dust content in the air entering the detection chamber 4 and transmits the detection data signal to the processor 7. The processor 7 analyzes and processes the received detection data signal and transmits the processing result to the display 9 for display, so that the testing personnel can understand the information in a timely manner. In this embodiment, the sampling head 2 and the air inlet pipe 3 are designed to be detachably connected. When the sampling head 2 needs to be cleaned due to dust accumulation, or when the sampling head 2 needs to be replaced to meet different testing environments and requirements, the sampling head 2 can be easily disassembled and replaced. This effectively solves the problem of difficult disassembly and cumbersome replacement of the sampling head 2 in traditional integrated designs, and helps to improve the efficiency of testing work. At the same time, the design uses a micro vacuum pump to draw dusty air from public places into the testing chamber 4 for testing, which improves the accuracy and efficiency of sampling and avoids the influence of the external environment on the test results, ensuring the accuracy of the test.

[0031] For a specific implementation of the sampling head 2 and the air inlet pipe 3, such as Figure 1 and Figure 3As shown, the sampling head 2 and the air inlet pipe 3 are fixedly connected by threads. Specifically, the sampling head 2 has an external thread 15 at the end near the air inlet pipe 3, and the air inlet pipe 3 has an internal thread. The sampling head 2 and the air inlet pipe 3 are connected by the external thread 15 and the internal thread. Furthermore, sealing tape can be used to seal the threaded connection between the sampling head 2 and the air inlet pipe 3 to ensure a negative pressure environment inside the air inlet pipe when the miniature vacuum pump is working.

[0032] Optionally, a nut 16 is fitted on the outer side of the sampling head 2. When the sampling head 2 is threadedly connected to the air inlet pipe 3, the nut 16 is placed between the detector body 1 and the sampling head 2 to ensure the stability of the sampling head 2 installation.

[0033] The optimized arrangement places the sampling head 2, air inlet pipe 3, detection box 4, micro vacuum pump 5 and air outlet pipe 13 on the same axis, reducing the resistance of the micro vacuum pump 5 to draw air.

[0034] Optimized implementation methods, such as Figure 1 and Figure 2 As shown, the detector body 1 is equipped with an alarm 11 and a buzzer 12. The detector body 1 also has a function key 10. The function key 10, alarm 11, and buzzer 12 are all electrically connected to the processor 7. When the processor 7 determines that the dust concentration exceeds a preset threshold, it sends a signal to the alarm 11 and buzzer 12, which then activate the alarm to alert the monitoring personnel, ensuring timely warning of abnormal situations. Simultaneously, the monitoring personnel can operate the processor 7 via the function key 10, which is electrically connected to the processor 7, to perform functions such as setting thresholds, meeting the diverse needs of dust concentration monitoring in different public places and enhancing the instrument's applicability.

[0035] Furthermore, the bottom of the detector body 1 is provided with a charging port 14 for charging the power supply 8.

[0036] As an optimized implementation, the detector body 1 is also provided with an automatic heat dissipation component for dissipating heat inside the detector body 1. The automatic heat dissipation component dissipates heat from the electronic components inside the detector body 1, avoiding problems such as accelerated aging of instrument components and reduced detection accuracy caused by excessive temperature, thereby improving the reliability of the instrument in different environments.

[0037] In some embodiments, such as Figure 3 and Figure 4As shown, the automatic heat dissipation assembly includes a controller 18, a temperature sensor 19, a fan 20, a heat dissipation hole 21, and a heat sink 22. The controller 18 is fixedly connected inside the detector body 1. The temperature sensor 19 is located in the middle of the detector body 1 near the detector 6. The fan 20, the heat dissipation hole 21, and the heat sink 22 are located on the side wall of the detector body 1. The temperature sensor 19 and the fan 20 are both electrically connected to the controller 18. During operation, the internal temperature of the instrument is monitored in real time by the temperature sensor 19. Once the internal temperature of the instrument exceeds the preset value, the temperature sensor 19 will transmit the temperature signal to the controller 18 in a timely manner. After receiving the signal, the controller 18 will control the fan 20 to run. The airflow generated by the fan 20 accelerates the airflow inside the instrument to a certain extent. At the same time, the heat dissipation hole 21 and the heat sink 22 work together. The heat sink 22 increases the heat dissipation area, and the heat dissipation hole 21 optimizes the heat dissipation path. The combination of the two and the airflow generated by the fan 20 helps to dissipate the heat inside the instrument, thereby avoiding problems such as accelerated aging of instrument components and reduced detection accuracy caused by excessive temperature to a certain extent, and improving the reliability of the instrument in different environments.

[0038] Optional implementation methods, such as Figure 4 As shown, the heat dissipation holes 21 and heat sinks 22 can be arranged on a heat dissipation plate 17. Specifically, the heat dissipation holes 21 are opened on the surface of the heat dissipation plate 17, and the heat sinks 22 are arranged around the heat dissipation plate 17 at equal intervals along the circumference of the heat dissipation plate 17, and each heat sink 22 extends radially along the heat dissipation plate 17. During installation, a mounting hole is opened on the side wall of the detector body 1, the heat dissipation plate 17 is arranged in the mounting hole, and the inner side wall of the mounting hole is provided with a insertion groove for inserting and fixing the heat sink 22.

[0039] In an optimized design, the fan 20 and the heat sink 17 are arranged opposite each other on two side walls of the detector body 1, and the detection box 4 is placed between the fan 20 and the heat sink 17. Through the heat dissipation of the fan 20 in conjunction with the heat dissipation holes 21 and the heat sink 22, the temperature of the dust detection environment (i.e., the detection box 4) is effectively guaranteed, and the accuracy of the detection results is improved.

[0040] In summary, the dust detector for public place hygiene testing provided by this utility model features a detachable connection between the sampling head and the air inlet pipe. When the sampling head needs cleaning due to dust accumulation, or when it needs to be replaced to meet different testing environments and requirements, the sampling head can be easily disassembled and replaced. This effectively solves the problems of difficult disassembly and cumbersome replacement of the sampling head in traditional integrated designs, thus improving the efficiency of testing. Furthermore, the micro vacuum pump draws dust-laden air from public places into the testing chamber for testing, improving the accuracy and efficiency of sampling and avoiding the influence of the external environment on the test results, ensuring the accuracy of the test.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dust detector for public place hygiene testing, comprising a detector body, characterized in that: The detector body is equipped with a sampling head on its top and a display on its surface. Inside the detector body, there are an air inlet pipe, a detection box, a miniature vacuum pump, and an air outlet pipe connected in sequence. The sampling head is detachably connected to the end of the air inlet pipe away from the detection box. The detection box is connected to a detector for detecting the dust content in the air flowing through it. The detector body also contains a processor and a power supply. The detector transmits the detection data signal to the processor for processing and transmits the processed result to the display for display. The miniature vacuum pump, detector, processor, and display are all electrically connected to the power supply.

2. A dust detector for public place hygiene testing according to claim 1, characterized in that: The sampling head is fixedly connected to the air inlet pipe by a thread.

3. A dust detector for public place hygiene testing according to claim 1, characterized in that: The sampling head, air inlet pipe, detection box, miniature vacuum pump, and air outlet pipe are located on the same axis.

4. A dust detector for public place hygiene testing according to claim 1, characterized in that: The detector body is also equipped with an automatic heat dissipation component for dissipating heat from the inside of the detector body.

5. A dust detector for public place hygiene testing according to claim 4, characterized in that: The automatic heat dissipation assembly includes a controller, a temperature sensor, a fan, heat dissipation holes, and a heat sink. The controller is fixedly connected inside the detector body. The temperature sensor is located in the middle of the detector body near the detector. The fan, heat dissipation holes, and heat sink are located on the side wall of the detector body. The temperature sensor and the fan are both electrically connected to the controller.

6. A dust detector for public place hygiene testing according to claim 5, characterized in that: The heat dissipation holes and heat sinks are disposed on the heat dissipation plate. The heat dissipation holes are opened in the middle of the heat dissipation plate. The heat sinks are arranged around the heat dissipation plate at equal intervals along the circumference of the heat dissipation plate, and each heat sink extends radially along the heat dissipation plate. The side wall of the detector body is provided with a mounting hole. The heat sink is disposed in the mounting hole, and the inner side wall of the mounting hole is provided with a insertion groove for inserting and fixing the heat sink.

7. A dust detector for public place hygiene testing according to claim 6, characterized in that: The fan and the heat sink are arranged opposite each other on two side walls of the detector body, and the detection box is located between the fan and the heat sink.

8. A dust detector for public place hygiene testing according to claim 1, characterized in that: The detector body is equipped with an alarm and a buzzer, both of which are electrically connected to the processor.

9. A dust detector for public place hygiene testing according to claim 1, characterized in that: The detector body is equipped with function keys, which are electrically connected to the processor.

10. A dust detector for public place hygiene testing according to claim 1, characterized in that: The bottom of the detector body is equipped with a charging port for charging the power source.

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