Carbon monoxide concentration detection device for sanitary detection

Abstract

The utility model relates to the technical field of carbon monoxide concentration detection equipment, and discloses a carbon monoxide concentration detection device for sanitary detection, which comprises a shell and an air inlet, the air inlet is arranged at an air inlet of the shell, the air inlet of the air inlet is communicated with an assembly shell, and the assembly shell is used as an integrated mounting carrier of an air inlet system. A stable airflow transmission channel is formed through sealed communication with the air inlet, so that external airflow leakage or interference on the purity of detected gas is avoided, and a closed and controllable environment is provided for subsequent filtering, air inlet and detection links; a filtering mechanism is embedded in an air inlet of the assembling shell, an air inlet mechanism is arranged in an inner cavity of the assembling shell, and the filtering mechanism and the air inlet mechanism form a cooperative working unit in the assembling shell. According to the carbon monoxide concentration detection device for sanitary detection, negative pressure suction force generated by rotation of the fan blades can quickly guide external gas to enter the assembly shell, the power loss is reduced through the power transmission effect of the main shaft, and the gas inlet efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of carbon monoxide concentration detection equipment, specifically a carbon monoxide concentration detection device for hygiene testing. Background Technology

[0002] Carbon monoxide concentration detection devices are widely used in various fields such as health testing, industrial production, and indoor environmental monitoring. Their core requirement is to quickly and accurately capture carbon monoxide concentration data in the environment, providing a reliable basis for safety protection and health assessment. The performance of such devices is directly related to the validity of the detection results and the safety of the application scenario, making them important equipment for ensuring human health and environmental safety.

[0003] In existing carbon monoxide concentration detection devices, the air intake system and filtration structure are mostly set up independently, lacking coordinated design. This makes it easy for the gas entering the detection module to be mixed with impurities such as dust and particulate matter, and the gas flow rate and volume are difficult to maintain, directly affecting the detection accuracy. At the same time, the filtration structure is mostly a fixed design, which is prone to blockage due to the accumulation of impurities during use. It requires additional cleaning devices or periodic manual disassembly and cleaning, which not only increases the structural complexity and energy consumption, but also reduces the continuous operation capability of the device. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a carbon monoxide concentration detection device for hygiene testing. This solves the technical problem that the above-mentioned filter structures are mostly fixed designs, which are prone to clogging due to the accumulation of impurities during use. They require additional cleaning devices or regular manual disassembly and cleaning, which not only increases the structural complexity and energy consumption, but also reduces the continuous operation capability of the device.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a carbon monoxide concentration detection device for hygiene testing, comprising: a shell and an air inlet, wherein the air inlet is disposed at the air inlet of the shell, and the air inlet is connected to an assembly shell, which serves as an integrated installation carrier for the air intake system. Through a sealed connection with the air inlet, a stable airflow transmission channel is formed, preventing external airflow leakage or interference with the purity of the detection gas, and providing a closed and controllable environment for subsequent filtration, air intake, and detection processes; the air inlet of the assembly shell is embedded with a filter mechanism, and the inner cavity of the assembly shell is provided with an air intake mechanism. The filter mechanism and the air intake mechanism form a collaborative working unit within the assembly shell. The filter mechanism first pre-treats the incoming gas for impurities, and then the air intake mechanism provides power to achieve directional gas delivery. The two work together to ensure that the gas entering the detection system is free of interfering impurities and maintains a stable flow rate and volume;

[0006] The air intake mechanism includes a motor, the output end of which is connected to a main shaft. Fan blades are mounted on the outside of the main shaft. The motor, as a power source, transmits torque to the fan blades through the main shaft. When the fan blades rotate, they generate negative pressure suction, allowing outside air to enter the assembly housing through the air inlet. The main shaft, as the core of power transmission, ensures efficient power transmission from the motor and avoids power loss. The fan blades are equipped with bristles that rotate synchronously with the fan blades. While delivering air, the bristles can clean the filter surface of the filtration mechanism in real time, removing attached impurities through physical contact and preventing clogging of the filter structure that would reduce air intake efficiency.

[0007] The filtration mechanism includes an annular filter plate, with bristles in contact with it. The annular filter plate features a ring-shaped structure design that adapts to the air inlet shape of the assembly housing, maximizing the filtration area. Its filter material can be selected according to the actual testing scenario, effectively intercepting solid impurities such as dust and particulate matter in the gas, preventing impurities from entering subsequent testing modules and affecting testing accuracy. The contact arrangement between the bristles and the annular filter plate forms an integrated "conveying-cleaning" design, eliminating the need for an additional cleaning power source. The annular filter plate and the assembly housing are connected by a sealed bearing. The sealed bearing enables the rotatable installation of the annular filter plate while ensuring the sealing performance between the annular filter plate and the assembly housing, preventing unfiltered gas from leaking through gaps. It also reduces frictional resistance during the rotation of the annular filter plate, improving rotational smoothness.

[0008] The top of the annular filter plate is connected to a first gear, the inner cavity of the first gear is meshed with a third gear, the outer cavity of the third gear is meshed with a second gear, and the second gear is fixedly installed outside the main shaft. This utility model adopts a gear meshing design with a fixed transmission ratio. The transmission ratio of the second gear, the third gear and the first gear is set according to the fan blade cleaning requirements to achieve the speed matching between the annular filter plate and the fan blade. Through the meshing transmission of the second gear, the third gear and the first gear, the rotational power of the main shaft is stably transmitted to the annular filter plate, so that the annular filter plate can rotate synchronously with the fan blade. The gear transmission structure ensures that the rotational speeds of the two are precisely matched, and the bristles and the annular filter plate form an efficient relative motion, improving the cleaning effect. At the same time, the gear transmission has the characteristics of stable transmission ratio and low power loss, ensuring the reliability of the mechanism operation.

[0009] The bottom of the outer casing is provided with a base shell, and a power module is installed on the outside of the base shell. The power module provides stable power support for the operation of the entire device, including driving the motor, processing data of the processing module, and operating the control unit. It is independently installed outside the base shell for easy installation, maintenance and replacement, while avoiding the impact of power supply heat on the internal components of the base shell. The processing end of the base shell is provided with a processing module. As the core control and data processing unit of the device, the processing module receives the carbon monoxide concentration signal transmitted by the detection module, analyzes and calculates it through built-in algorithms, and finally outputs the detection result. At the same time, it coordinates the collaborative work of various mechanisms, such as controlling the start and stop of the motor and adjusting the speed, to ensure the overall coordination and accuracy of the device operation.

[0010] Preferably, the bottom of the outer shell is uniformly provided with snap-fit ​​members, the other end of which is connected to the bottom shell. The snap-fit ​​members adopt a uniformly distributed design to ensure that the force on the connection between the bottom shell and the outer shell is balanced, avoiding local stress concentration that could lead to loosening of the connection. The snap-fit ​​connection structure facilitates the quick assembly and disassembly of the bottom shell without the need for complex tools, improving the ease of maintenance of the device. At the same time, the snap-fit ​​members have a certain elastic deformation capacity, which can buffer the vibration generated during the operation of the device and protect the internal components of the bottom shell.

[0011] Preferably, the data input terminal of the bottom shell is provided with a power interface, and the inner cavity of the power interface is provided with a wear-resistant sleeve. The power interface serves as an access channel for external power. The wear-resistant sleeve of its inner cavity is made of high-hardness, friction-resistant materials such as polyurethane, nylon, or engineering plastics, which can reduce wear during the plug insertion and removal process and extend the service life of the interface. At the same time, the wear-resistant sleeve and the plug form a tight fit, which improves the stability of the electrical connection and avoids power outages or voltage fluctuations due to poor contact.

[0012] Preferably, the processing module has heat dissipation modules evenly distributed on its exterior, and a protective shell is provided on the exterior of the processing module. The heat dissipation modules adopt a structure of evenly distributed heat dissipation holes or heat dissipation fins, which can quickly dissipate the heat generated by the processing module during operation, avoid the performance degradation or damage of components due to high temperature, and ensure that the processing module works stably for a long time. The protective shell is made of corrosion-resistant and impact-resistant materials such as 304 stainless steel and ABS engineering plastic. A ventilation gap of 5-10mm is reserved between the heat dissipation module and the protective shell, which can block the corrosion of the processing module by external dust, moisture and physical impact, and provide all-round protection for internal circuit components.

[0013] Preferably, the control end of the housing is provided with a control button, and the control button is covered with a protective film. As the core component of human-computer interaction, the control button is used to realize the start and stop of the device, mode switching and other operations. The protective film is made of waterproof and oil-resistant materials such as TPU and PET transparent film. It is fixedly connected to the surface of the control button through a seamless bonding process, which can prevent dust and liquid from seeping into the button and causing short circuits or malfunctions, while not affecting the pressing operation of the button and improving the durability of the button.

[0014] Preferably, the spindle is externally connected to a spherical bearing. Both the spherical bearing and the motor are connected to the inner cavity of the assembly housing via a bracket. The spherical bearing has an automatic self-aligning function, which can compensate for installation deviations or minor deflections during spindle operation, reduce spindle wear, and improve rotational accuracy. The bracket adopts a rigid connection structure to firmly fix the spherical bearing and the motor in the inner cavity of the assembly housing, ensuring the accuracy of their installation positions, avoiding displacement or vibration during operation, and ensuring the stability of power transmission.

[0015] Preferably, the third gear is provided with a mounted bearing on its exterior. The mounted bearing is connected to the inner cavity of the assembly housing by bolts. The mounted bearing provides stable support for the third gear, reduces radial runout during gear rotation, ensures the accuracy of gear meshing, and avoids transmission jamming or tooth dislodgement. The bolt connection method ensures that the mounted bearing is firmly installed and facilitates subsequent disassembly and maintenance. The integrated design of the mounted bearing simplifies the installation process and improves the assembly efficiency of the mechanism.

[0016] Preferably, the surface of the fan blade is coated with a polytetrafluoroethylene (PTFE) anti-corrosion coating, and the edges of the fan blade are provided with an arc-shaped chamfer structure. The PTFE anti-corrosion coating has excellent corrosion resistance and non-stick properties, which can prevent corrosive gases or water vapor that may be present in the detection environment from eroding the fan blade, while avoiding the adhesion of impurities and reducing the difficulty of cleaning. The arc-shaped chamfer structure can reduce the airflow resistance when the fan blade rotates, improve the air intake efficiency, and avoid the safety hazards caused by sharp edges, and prevent impurities in the gas from accumulating at the edges.

[0017] Compared with the prior art, this utility model provides a carbon monoxide concentration detection device for hygiene testing, which has the following beneficial effects:

[0018] This carbon monoxide concentration detection device for hygiene testing features a filtration mechanism and an air intake mechanism that work together within the assembly housing. The filtration mechanism first pre-treats the gas to remove impurities, and then the air intake mechanism directs the gas flow. This dual action removes interfering impurities from the gas while ensuring stable gas velocity and flow rate, laying the foundation for accurate detection. The motor efficiently transmits power to the fan blades via the main shaft. The negative pressure suction generated by the rotating fan blades quickly guides external gas into the assembly housing. The power transmission function of the main shaft reduces power loss and improves air intake efficiency.

[0019] The bristles on the outside of the fan blades rotate synchronously with the fan blades, achieving real-time cleaning of the filter surface of the filter mechanism while conveying gas. By physically scraping away attached impurities, it effectively avoids clogging of the filter structure, maintains long-term stable air intake efficiency, and eliminates the need for additional cleaning devices, simplifying the structural design. The annular filter plate adopts an annular structure to fit the air inlet of the assembly shell, maximizing the filtration area. The filter material can be flexibly selected according to the detection scenario, accurately intercepting solid impurities such as dust and particulate matter, preventing impurities from entering subsequent detection modules and affecting detection accuracy. At the same time, the contact setting between the bristles and the annular filter plate forms an integrated design of conveying and cleaning, eliminating the need for an additional cleaning power source and reducing energy consumption and structural complexity.

[0020] Through the meshing transmission of the second and third gears with the first gear, the rotational power of the main shaft is stably transmitted to the annular filter plate, so that the annular filter plate and the fan blades rotate synchronously. The gear transmission structure ensures that the rotational speeds of the two are precisely matched, allowing the bristles and the annular filter plate to form an efficient relative motion, which greatly improves the cleaning effect. In addition, the gear transmission has the advantages of stable transmission ratio and low power loss, which effectively ensures the reliability and durability of the mechanism operation. Attached Figure Description

[0021] Figure 1 This is a front view of the present utility model;

[0022] Figure 2 This is a schematic diagram of the bottom of the present invention;

[0023] Figure 3 This is a schematic diagram of the bottom of the air inlet of this utility model;

[0024] Figure 4 This is a schematic diagram of the external air inlet of this utility model;

[0025] Figure 5 This is a schematic diagram of the external structure of the air intake mechanism of this utility model.

[0026] In the diagram: 1. Outer shell; 11. Control button; 2. Air inlet; 21. Assembly shell; 3. Bottom shell; 31. Power module; 32. Snap-fit ​​component; 33. Power interface; 4. Processing module; 5. Air intake mechanism; 51. Main shaft; 52. Spherical bearing; 53. Motor; 54. Fan blade; 6. Filtering mechanism; 61. Annular filter plate; 62. First gear; 63. Second gear; 64. Sealed bearing; 65. Third gear. Detailed Implementation

[0027] 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.

[0028] This utility model provides a technical solution, please refer to Figure 1 and Figure 2 A carbon monoxide concentration detection device for hygiene testing includes: a housing 1 and an air inlet 2, wherein the air inlet 2 is disposed at the air inlet of the housing 1, and the air inlet 2 is connected to an assembly shell 21. The assembly shell 21 serves as an integrated installation carrier for the air intake system. Through a sealed connection with the air inlet 2, a stable airflow transmission channel is formed to prevent external airflow leakage or interference with the purity of the detection gas, providing a closed and controllable environment for subsequent filtration, air intake, and detection processes. The air inlet of the assembly shell 21 is embedded with a filter mechanism 6, and the inner cavity of the assembly shell 21 is provided with an air intake mechanism 5. The filter mechanism 6 and the air intake mechanism 5 form a collaborative working unit within the assembly shell 21. The filter mechanism 6 first pre-treats the incoming gas for impurities, and then the air intake mechanism 5 provides power to achieve directional gas delivery. The two work together to ensure that the gas entering the detection system is free of interfering impurities and maintains a stable flow rate and volume.

[0029] Please see Figure 3 and Figure 4 The air intake mechanism 5 includes a motor 53, the output end of which is connected to a main shaft 51. A fan blade 54 is installed on the outside of the main shaft 51. The motor 53 serves as a power source, transmitting torque to the fan blade 54 through the main shaft 51. When the fan blade 54 rotates, it generates negative pressure suction, allowing external air to enter the assembly housing 21 through the air inlet 2. The main shaft 51 serves as the core of power transmission, ensuring efficient transmission of motor power and avoiding power loss. The fan blade 54 is equipped with bristles that rotate synchronously with the fan blade 54. While delivering air, the bristles can clean the filter surface of the filter mechanism 6 in real time, removing attached impurities through physical contact and preventing clogging of the filter structure that could lead to a decrease in air intake efficiency.

[0030] Please see Figure 4 and Figure 5The filtration mechanism 6 includes an annular filter plate 61, with bristles in contact with the annular filter plate 61. The annular filter plate 61 adopts an annular structure design, which is adapted to the air inlet shape of the assembly shell 21 to maximize the filtration area. Its filter material can be selected according to the actual detection scenario, and it can intercept solid impurities such as dust and particulate matter in the gas, preventing impurities from entering the subsequent detection module and affecting the detection accuracy. The contact setting between the bristles and the annular filter plate 61 forms an integrated "conveying-cleaning" design, eliminating the need for an additional cleaning power source. The annular filter plate 61 and the assembly shell 21 are connected by a sealed bearing 64. The sealed bearing 64 not only enables the rotatable installation of the annular filter plate 61, but also ensures the sealing performance between the annular filter plate 61 and the assembly shell 21, preventing unfiltered gas from leaking from the gap, while reducing the frictional resistance when the annular filter plate 61 rotates and improving the smoothness of rotation.

[0031] A first gear 62 is connected to the top of the annular filter plate 61. A third gear 65 is externally meshed with the first gear 62. A second gear 63 is externally meshed with the third gear 65. The second gear 63 is fixedly installed on the outside of the main shaft 51. This utility model adopts a gear meshing design with a fixed transmission ratio. The transmission ratio of the second gear 63, the third gear 65 and the first gear 62 is set according to the fan blade cleaning requirements to achieve the speed matching between the annular filter plate 61 and the fan blade 54. Through the meshing transmission of the second gear 63, the third gear 65 and the first gear 62, the rotational power of the main shaft 51 is stably transmitted to the annular filter plate 61, so that the annular filter plate 61 can rotate synchronously with the fan blade 54. The gear transmission structure ensures that the rotational speeds of the two are precisely matched, and the bristles and the annular filter plate 61 form an efficient relative motion, improving the cleaning effect. At the same time, the gear transmission has the characteristics of stable transmission ratio and low power loss, ensuring the reliability of the mechanism operation.

[0032] The bottom of the outer casing 1 is provided with a bottom shell 3, and a power module 31 is provided on the outside of the bottom shell 3. The power module 31 provides stable power support for the operation of the entire device, including driving the motor 53, data processing of the processing module 4, and operation of the control unit. It is independently set on the outside of the bottom shell 3 for easy installation, maintenance and replacement, and at the same time avoids the power supply heat from affecting the internal components of the bottom shell 3. The processing end of the bottom shell 3 is provided with a processing module 4. As the core control and data processing unit of the device, the processing module 4 receives the carbon monoxide concentration signal transmitted by the detection module, analyzes and calculates it through the built-in algorithm, and finally outputs the detection result. At the same time, it coordinates the collaborative work of various mechanisms, such as controlling the start and stop of the motor 53 and adjusting the speed, to ensure the overall coordination and accuracy of the device operation.

[0033] The bottom of the outer shell 1 is evenly provided with snap-fit ​​parts 32. The other end of the snap-fit ​​parts 32 is connected to the bottom shell 3. The snap-fit ​​parts 32 adopt an evenly distributed design to ensure that the force on the connection between the bottom shell 3 and the outer shell 1 is balanced, avoiding local stress concentration that could lead to loosening of the connection. The snap-fit ​​connection structure facilitates the quick assembly and disassembly of the bottom shell 3 without the need for complicated tools, improving the ease of maintenance of the device. At the same time, the snap-fit ​​parts 32 have a certain elastic deformation capability, which can buffer the vibration generated during the operation of the device and protect the internal components of the bottom shell 3.

[0034] The bottom shell 3 has a power interface 33 at its data input end. The inner cavity of the power interface 33 is equipped with a wear-resistant sleeve. The power interface 33 serves as an access channel for external power. The wear-resistant sleeve in its inner cavity is made of a high-hardness, friction-resistant material, which can reduce wear during the plug insertion and removal process and extend the service life of the interface. At the same time, the wear-resistant sleeve and the plug form a tight fit, which improves the stability of the electrical connection and avoids power outages or voltage fluctuations due to poor contact.

[0035] The processing module 4 is uniformly provided with heat dissipation modules on its exterior. The processing module 4 is also provided with a protective shell. The heat dissipation modules adopt a uniformly distributed heat dissipation hole or heat dissipation fin structure, which can quickly dissipate the heat generated by the processing module 4 during operation, avoid the performance degradation or damage of components due to high temperature, and ensure that the processing module 4 can work stably for a long time. The protective shell is made of corrosion-resistant and impact-resistant material, which can block the corrosion of the processing module 4 by external dust, water vapor and physical impact, and provide all-round protection for the internal circuit components.

[0036] The control end of the outer casing 1 is equipped with a control button 11. The control button 11 is covered with a protective film. As the core component of human-computer interaction, the control button 11 is used to realize the start and stop of the device, mode switching and other operations. The protective film is made of transparent, waterproof and oil-proof material, which can prevent dust and liquid from seeping into the button and causing short circuit or malfunction, while not affecting the button's pressing operation and improving the button's durability.

[0037] The spindle 51 is externally connected to a spherical bearing 52. Both the spherical bearing 52 and the motor 53 are connected to the inner cavity of the assembly housing 21 via a bracket. The spherical bearing 52 has an automatic self-aligning function, which can compensate for installation deviations or slight deflections during the operation of the spindle 51, reduce wear on the spindle 51, and improve rotational accuracy. The bracket adopts a rigid connection structure to firmly fix the spherical bearing 52 and the motor 53 to the inner cavity of the assembly housing 21, ensuring the accuracy of their installation positions, avoiding displacement or vibration during operation, and ensuring the stability of power transmission.

[0038] The third gear 65 is externally equipped with a mounted bearing, which is connected to the inner cavity of the assembly housing 21 by bolts. The mounted bearing provides stable support for the third gear 65, reduces radial runout during gear rotation, ensures the accuracy of gear meshing, and avoids transmission jamming or tooth dislodgement. The bolt connection method ensures that the mounted bearing is firmly installed, while facilitating subsequent disassembly and maintenance. The integrated design of the mounted bearing simplifies the installation process and improves the assembly efficiency of the mechanism.

[0039] The surface of the fan blade 54 is coated with a polytetrafluoroethylene (PTFE) anti-corrosion coating, and the edges of the fan blade 54 are provided with an arc-shaped chamfer structure. The PTFE anti-corrosion coating has excellent corrosion resistance and non-stick properties, which can prevent corrosive gases or water vapor that may be present in the detection environment from corroding the fan blade 54, while avoiding the adhesion of impurities and reducing the difficulty of cleaning. The arc-shaped chamfer structure can reduce the airflow resistance when the fan blade 54 rotates, improve the air intake efficiency, and avoid the safety hazards caused by sharp edges, and prevent impurities in the gas from accumulating at the edges.

[0040] The control button 11 adopts a capacitive touch-sensitive structure with a built-in pressure sensing unit and signal trigger chip. It inputs commands by sensing changes in capacitance or pressure applied to the fingertip. Compared to traditional mechanical buttons, it eliminates physical contact wear, offers faster response, and the trigger threshold can be calibrated via software using the processing module 4 to adapt to different users' operating habits. Its external protective film is not only waterproof and oil-resistant but also made of anti-static material to prevent electrostatic interference with the trigger chip's signal transmission. Furthermore, the protective film and button surface are seamlessly bonded to prevent moisture from seeping into the internal circuitry. The processing module 4 integrates a microcontroller (MCU), signal amplification circuit, analog-to-digital converter, and memory chip. The microcontroller, as the core computing unit, pre-stores the calibration algorithm and data processing logic for carbon monoxide concentration detection, enabling it to process the weak electrical signal output from the detection module. After amplification by the amplifier circuit, the signal is converted into a digital signal by the analog-to-digital converter. This digital signal is then compared and analyzed with the preset standard concentration parameters in the storage chip to accurately calculate the actual carbon monoxide concentration. Meanwhile, the processing module 4 has multi-channel signal processing capabilities and can simultaneously receive feedback signals such as motor operating status and power supply voltage to achieve real-time monitoring of the device's operating status. When an abnormal signal is detected, the protection mechanism can be automatically triggered, such as cutting off the motor power supply or issuing an alarm. The outer protective shell also has a buffer pad structure inside, which absorbs external vibrations through elastic materials such as silicone and rubber to prevent vibrations from causing the solder joints inside the processing module to fall off or components to be damaged. A 5-10mm ventilation gap is reserved between the heat dissipation module and the protective shell to form a natural convection channel, further improving heat dissipation efficiency and ensuring that the processing module can maintain stable computing performance in high-temperature environments.

[0041] First, the device is started by controlling button 11, and power module 31 supplies power to components such as motor 53 and processing module 4. Motor 53 drives main shaft 51 to rotate, and main shaft 51 drives fan blade 54 to rotate, generating negative pressure, allowing external gas to enter assembly shell 21 through air inlet 2. At the same time, main shaft 51 drives annular filter plate 61 to rotate synchronously through the meshing of second gear 63, third gear 65 and first gear 62. The gas first passes through annular filter plate 61 to filter and remove impurities. The bristles on the outside of fan blade 54 rotate with the fan blades, cleaning the surface of annular filter plate 61 in real time to avoid filter blockage. The filtered gas enters the interior of shell 1 under the push of fan blade 54, contacts the detection module to realize carbon monoxide concentration detection, and the detection signal is transmitted to processing module 4. After analysis and processing by processing module 4, the detection result is output. Throughout the process, the sealing structure ensures the airtightness of gas transmission, the heat dissipation module, the protective structure and other components ensure the stable operation of the device for a long time, and the snap-fit ​​parts 32, bolt connections and other structures facilitate the installation and maintenance of the device.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A carbon monoxide concentration detection device for hygiene testing, comprising: The housing (1) and the air inlet (2), wherein the air inlet (2) is located at the air inlet of the housing (1), characterized in that: the air inlet (2) is connected to the assembly shell (21), the air inlet of the assembly shell (21) is fitted with a filter mechanism (6), and the inner cavity of the assembly shell (21) is provided with an air intake mechanism (5), the air intake mechanism (5) includes a motor (53), the output end of the motor (53) is connected to a main shaft (51), the outside of the main shaft (51) is provided with fan blades (54), the outside of the fan blades (54) is provided with bristles, the filter mechanism (6) includes an annular filter plate (61), and the bristles The annular filter plate (61) is in contact with the assembly shell (21) and is connected to the annular filter plate (61) by a sealed bearing (64). The top of the annular filter plate (61) is connected to a first gear (62). The outside of the first gear (62) is connected to a third gear (65). The outside of the third gear (65) is meshed with a second gear (63). The second gear (63) is fixedly set outside the main shaft (51). The bottom of the outer shell (1) is provided with a bottom shell (3). The outside of the bottom shell (3) is provided with a power module (31). The processing end of the bottom shell (3) is provided with a processing module (4).

2. The carbon monoxide concentration detection device for hygiene testing according to claim 1, characterized in that: The bottom of the outer shell (1) is uniformly provided with snap-fit ​​parts (32), and the other end of the snap-fit ​​parts (32) is connected to the bottom shell (3).

3. The carbon monoxide concentration detection device for hygiene testing according to claim 1, characterized in that: The bottom shell (3) is provided with a power interface (33) at its data input end, and the inner cavity of the power interface (33) is provided with a wear-resistant sleeve.

4. The carbon monoxide concentration detection device for hygiene testing according to claim 1, characterized in that: The processing module (4) is provided with heat dissipation modules evenly distributed on its exterior, and a protective shell is provided on the exterior of the processing module (4).

5. The carbon monoxide concentration detection device for hygiene testing according to claim 1, characterized in that: The control end of the outer casing (1) is provided with a control button (11), and the control button (11) is provided with a protective film.

6. The carbon monoxide concentration detection device for hygiene testing according to claim 1, characterized in that: The main shaft (51) is externally connected to a spherical bearing (52), and the spherical bearing (52) and the motor (53) are both connected to the inner cavity of the assembly housing (21) through a bracket.

7. A carbon monoxide concentration detection device for hygiene testing according to claim 1, characterized in that: The third gear (65) is provided with a seated bearing on its exterior, and the seated bearing is connected to the inner cavity of the assembly housing (21) by bolts.

8. A carbon monoxide concentration detection device for hygiene testing according to claim 1, characterized in that: The surface of the fan blade (54) is coated with a polytetrafluoroethylene anti-corrosion coating, and the edge of the fan blade (54) is provided with an arc-shaped chamfer structure.

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