Intelligent constant-flow atmosphere sampling device

Abstract

The utility model discloses an intelligent constant flow atmosphere sampling device which comprises a device shell, the device shell comprises an upper shell and a lower shell, a constant flow assembly is arranged between the upper shell and the lower shell, a front panel is installed at the front end of the upper shell and the front end of the lower shell, a control assembly is fixedly installed on the inner side of the front panel, and the constant flow assembly comprises a connecting pipe. An air pump is installed at the upper end of the connecting pipe, a three-way pipe is connected to the middle of the connecting pipe, an airflow sensor is arranged at the lower end of the connecting pipe, an air pressure cavity is formed in the rear side of the three-way pipe, an air pressure sensor is installed at the rear end of the air pressure cavity, and the air pump, the airflow sensor and the air pressure sensor are all connected with the single-chip microcomputer through connecting wires. In actual use, the air pressure cavity and the air pressure sensor are introduced, so that the device can directly sense and monitor the pressure change in the gas flowing process; the single-chip microcomputer receives data from the sensors, controls the air pump through an algorithm, achieves constant-current control, carries out secondary verification through air pressure data, and improves the reliability and stability of the system.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent constant - flow air sampling, and specifically relates to an intelligent constant - flow air sampling device. Background Technique

[0002] A constant - flow air sampling device is a professional device that can maintain a constant sampling flow rate and is widely used in fields such as environmental monitoring, indoor air quality detection, and workplace safety monitoring. By means of an internal flow meter and control system, the flow rate during the sampling process is ensured to be stable, so as to accurately collect and analyze harmful substances in the air. Its application scenarios include outdoor environmental monitoring stations, indoor environmental detection, and workplace safety monitoring in industries such as chemical engineering and metallurgy, providing strong technical support for environmental protection and human health.

[0003] In the prior art, the method of relying solely on an air - flow sensor for constant - flow control is relatively single. The main problem is that its control accuracy may be affected by various environmental factors, and there is a lack of a direct perception and secondary verification mechanism for gas - pressure changes.

[0004] Therefore, there is a need for an intelligent constant - flow air sampling device to solve the above problems. Content of the Utility Model

[0005] Technical problem to be solved

[0006] Aiming at the deficiencies of the prior art, the utility model provides an intelligent constant - flow air sampling device to solve the problem of the lack of a direct perception and secondary verification mechanism for gas - pressure changes mentioned in the above background technique.

[0007] Technical solution

[0008] To achieve the above object, the utility model provides the following technical solution: an intelligent constant - flow air sampling device, comprising a device housing, a constant - flow component, and a control component. The device housing includes an upper housing and a lower housing. A constant - flow component is arranged between the upper housing and the lower housing. A front panel is installed at the front end of the upper housing and the lower housing. A rear panel is installed on the opposite side of the front panel. A control component is fixedly installed inside the front panel. The constant - flow component includes a connecting pipe, the connecting pipe is fixedly installed on the rear panel, an air pump is installed at the upper end of the connecting pipe, a tee is connected in the middle of the connecting pipe, an air - flow sensor is arranged at the lower end of the connecting pipe, a pressure chamber is arranged at the rear side of the tee, a pressure sensor is installed at the rear end of the pressure chamber. The control component includes a single - chip microcomputer, and the air pump, the air - flow sensor, and the pressure sensor are all connected to the single - chip microcomputer through connecting wires.

[0009] Preferably, the lower end of the upper housing corresponds to the upper end of the lower housing, and the upper housing and the lower housing are fixedly connected by a front panel and a rear panel arranged at the front and rear ends.

[0010] Preferably, a sampling bottle groove is provided on the left side of the upper end of the upper housing, and a drying bottle groove is provided on the right side of the upper end of the upper housing.

[0011] Preferably, a hose connector is installed on the upper side of the rear panel, and the hose connector communicates with a connecting pipe.

[0012] Preferably, a heat dissipation hole group is provided on the left side of the rear panel, and a heat dissipation fan is installed on the right side of the rear panel.

[0013] Preferably, a display screen is provided on the upper side of the single-chip microcomputer, control buttons are provided on the lower side of the single-chip microcomputer, and the single-chip microcomputer is fixedly installed inside the front panel.

[0014] Preferably, a power interface is provided on the left side of the front panel, multiple groups of data interfaces are provided at the lower end of the power interface, and both the data interfaces and the power interface are connected to the single-chip microcomputer.

[0015] Beneficial effects

[0016] The present invention provides an intelligent constant-current air sampling device, which has the following beneficial effects: the connecting pipe, air pump, three-way pipe and airflow sensor in the constant-current component jointly ensure the constant-current flow of gas, and the introduction of the air pressure chamber and air pressure sensor enables the device to directly sense and monitor the pressure change during the gas flow process; the single-chip microcomputer in the control component receives data from each sensor, controls the air pump through an algorithm to achieve constant-current control, and performs secondary verification through air pressure data, improving the reliability and stability of the system; this design enables the intelligent constant-current air sampling device to achieve high-precision constant-current sampling in a complex environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view structural schematic diagram of the whole of the present invention;

[0018] Figure 2 It is a rear view structural schematic diagram of the whole of the present invention;

[0019] Figure 3 It is an exploded rear view structural schematic diagram of the present invention;

[0020] Figure 4 It is an exploded front view structural schematic diagram of the present invention.

[0021] In the figure: 1. Device housing; 11. Upper housing; 111. Sampling bottle slot; 112. Drying bottle slot; 12. Lower housing; 13. Front panel; 131. Power interface; 132. Data interface; 14. Rear panel; 141. Heat dissipation hole group; 142. Heat dissipation fan; 2. Constant current component; 21. Hose connector; 22. Connecting pipe; 23. Air pump; 24. Three-way pipe; 25. Pressure chamber; 26. Pressure sensor; 27. Airflow sensor; 3. Control component; 31. Single-chip microcomputer; 32. Control button; 33. Display screen; 34. Connecting wire. Detailed implementation manner

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0024] Please refer to Figures 1-4 , the present invention provides a technical solution: an intelligent constant current air sampling device, including a device housing 1, a constant current component 2, and a control component 3. The device housing 1 includes an upper housing 11 and a lower housing 12. A constant current component 2 is arranged between the upper housing 11 and the lower housing 12. A front panel 13 is installed at the front ends of the upper housing 11 and the lower housing 12, and a rear panel 14 is installed on the opposite side of the front panel 13. A control component 3 is fixedly installed inside the front panel 13. The constant current component 2 includes a connecting pipe 22, the connecting pipe 22 is fixedly installed on the rear panel, an air pump 23 is installed at the upper end of the connecting pipe 22, a three-way pipe 24 is connected in the middle of the connecting pipe 22, an airflow sensor 27 is arranged at the lower end of the connecting pipe 22, a pressure chamber 25 is arranged at the rear side of the three-way pipe 24, and a pressure sensor 26 is installed at the rear end of the pressure chamber 25. The control component 3 includes a single-chip microcomputer 31, and the air pump 23, the airflow sensor 27, and the pressure sensor 26 are all connected to the single-chip microcomputer 31 through a connecting wire 34;

[0025] In actual use, the device housing 1 provides protection and support for internal components; the connecting pipe 22 serves as a passage for gas flow, ensuring that gas flows from the air pump 23 to the sampling point; the air pump 23 provides power to drive the gas to flow in the connecting pipe 22. The tee 24 divides the gas in the connecting pipe 22 into two paths, one of which flows into the air pressure chamber 25. When the air flow increases, since the air pressure chamber 25 is designed to be in a closed state, the internal air pressure will relatively decrease, forming a negative air pressure state. The air pressure sensor 26 can monitor this change in negative air pressure in real time and feed the data back to the single-chip microcomputer 31 in the control component 3.

[0026] The lower end of the upper housing 11 corresponds to the upper end of the lower housing 12. The upper housing 11 and the lower housing 12 are connected and fixed by the front panel 13 and the rear panel 14 provided at the front and rear ends. This design allows only the upper housing 11 to be disassembled when internal inspection or maintenance is required, greatly simplifying the operation process.

[0027] On the left side of the upper end of the upper housing 11, there is a sampling bottle slot 111, and on the right side of the upper end of the upper housing 11, there is a drying bottle slot 112. The main functions of the sampling bottle slot 111 and the drying bottle slot 112 are to provide a dedicated space for placing the sampling bottle and the drying bottle. Such a design enables the sampling bottle to be firmly fixed on the device, avoiding possible shaking or falling during the sampling process, thus ensuring the accuracy and safety of sampling. At the same time, the position design of the sampling bottle slot 111 and the drying bottle slot 112 also takes into account the convenience of operation, allowing the staff to easily place and remove the sampling bottle.

[0028] On the upper side of the rear panel 14, there is a hose connector 21, which is communicated with the connecting pipe 22. The main function of the hose connector 21 is to provide a convenient interface for connecting an external hose to the connecting pipe 22 inside the device.

[0029] On the left side of the rear panel 14, there is a heat dissipation hole group 141, and on the right side of the rear panel 14, there is a heat dissipation fan 142. The combined use of the heat dissipation hole group 141 and the heat dissipation fan 142 provides an efficient and reliable heat dissipation solution for the intelligent constant flow air sampling device. Their combined action ensures that the device can maintain a stable temperature during long-term operation or high-load work, preventing failures or damages caused by overheating.

[0030] On the upper side of the single-chip microcomputer 31, there is a display screen 33, and on the lower side of the single-chip microcomputer 31, there are control buttons 32. The single-chip microcomputer 31 is fixedly installed inside the front panel 13. The design of the display screen 33, the control buttons 32, and the single-chip microcomputer 31 enables the intelligent constant flow air sampling device to have good human-computer interaction performance, and the device can be controlled and monitored through simple operations, greatly improving the convenience of use and the operation efficiency of the device.

[0031] On the left side of the front panel 13, there is a power interface 131. At the lower end of the power interface 131, there are multiple groups of data interfaces 132. Both the data interface 132 and the power interface 131 are connected to the single-chip microcomputer 31. The single-chip microcomputer 31 receives the power supply from the power interface 131 to ensure the normal operation of each component inside the device. At the same time, the single-chip microcomputer 31 also conducts data interaction with external devices through the data interface 132 to achieve data transmission, reception, and processing.

[0032] As an embodiment of the present utility model: When using the intelligent constant-current air sampling device, first, set the required sampling parameters, such as sampling flow rate, sampling time, etc., through the control buttons 32 on the front panel 13 or the operation interface on the display screen 33. If necessary, connect external devices through the data interface 132 for more advanced parameter settings or data transmission. After setting the parameters, press the start button to start the air pump 23 and start the sampling work. The display screen 33 will display the relevant information during the sampling process in real time, such as the current flow rate, air pressure status, etc.

[0033] During the sampling process, the sampling status can be monitored through the display screen 33, and relevant parameters can be adjusted as needed. The air pressure sensor 26 and the air flow sensor 27 will monitor the changes in air pressure and flow rate in real time and feedback the data to the single-chip microcomputer 31. The single-chip microcomputer 31 automatically adjusts the working state of the air pump 23 according to the preset algorithm to ensure a constant sampling flow rate.

[0034] When the set sampling time is reached or other stop conditions are met, the device will automatically stop sampling, thus completing the use of the intelligent constant-current air sampling device.

[0035] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0036] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An intelligent constant-current air sampling device, comprising a device housing (1), a constant-current component (2) and a control component (3), wherein the device housing (1) includes an upper housing (11) and a lower housing (12), and is characterized in that: A constant current component (2) is arranged between the upper shell (11) and the lower shell (12). A front panel (13) is installed at the front ends of the upper shell (11) and the lower shell (12). A rear panel (14) is installed on the opposite surface of the front panel (13). A control component (3) is fixedly installed inside the front panel (13). The constant current component (2) includes a connecting pipe (22). The connecting pipe (22) is fixedly installed on the rear back panel. An air pump (23) is installed at the upper end of the connecting pipe (22). A tee pipe (24) is connected in the middle of the connecting pipe (22). An air flow sensor (27) is arranged at the lower end of the connecting pipe (22). An air pressure chamber (25) is arranged at the rear side of the tee pipe (24). An air pressure sensor (26) is installed at the rear end of the air pressure chamber (25). The control component (3) includes a single-chip microcomputer (31). The air pump (23), the air flow sensor (27), and the air pressure sensor (26) are all connected to the single-chip microcomputer (31) through connecting wires (34).

2. The intelligent constant-current atmospheric sampling device according to claim 1, wherein: The lower end of the upper shell (11) corresponds to the upper end of the lower shell (12). The upper shell (11) and the lower shell (12) are connected and fixed by the front panel (13) and the rear panel (14) arranged at the front and rear ends.

3. An intelligent constant-current atmospheric sampling device according to claim 1, characterized in that: A collection bottle slot (111) is opened on the left side of the upper end of the upper shell (11). A drying bottle slot (112) is opened on the right side of the upper end of the upper shell (11).

4. The intelligent constant-current atmospheric sampling device according to claim 1, wherein: A hose joint (21) is installed on the upper side of the rear panel (14). The hose joint (21) communicates with the connecting pipe (22).

5. An intelligent constant current atmospheric sampling device according to claim 1, characterized in that: A heat dissipation hole group (141) is opened on the left side of the rear panel (14). A heat dissipation fan (142) is installed on the right side of the rear panel (14).

6. The intelligent constant-current air sampling device according to claim 1, wherein: A display screen (33) is arranged on the upper side of the single-chip microcomputer (31). Control buttons (32) are arranged on the lower side of the single-chip microcomputer (31). The single-chip microcomputer (31) is fixedly installed inside the front panel (13).

7. An intelligent constant-current atmospheric sampling device according to claim 1, characterized in that: A power supply interface (131) is arranged on the left side of the front panel (13). Multiple groups of data interfaces (132) are arranged at the lower end of the power supply interface (131). The data interfaces (132) and the power supply interface (131) are both connected to the single-chip microcomputer (31).

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