Indoor air monitoring and sampling device

Abstract

The utility model relates to an indoor air monitoring and sampling device which comprises a monitoring box, the monitoring box comprises a monitoring mechanism and a sampling mechanism, the sampling mechanism is arranged in the monitoring box, and the sampling mechanism comprises a sampling bin and an air guide assembly; the gas guide assembly comprises a gas guide main pipe, gas guide branch pipes and a gas guide reversing device arranged between the gas guide main pipe and the gas guide branch pipes, and the gas guide reversing device is used for being communicated with the corresponding gas guide branch pipes according to the set gas concentration obtained by the monitoring mechanism. According to the utility model, the sampling mechanism is arranged on the basis of the monitoring mechanism, indoor gas is guided into the sampling bin through the gas guide assembly, and samples in the sampling bin are monitored through the monitoring mechanism, so that subsequent workers can conveniently put forward regulation measures according to sampling data, and the content of indoor toxic gas is reduced.

Description

Technical Field

[0001] This utility model relates to the field of gas monitoring technology, and in particular to an indoor air monitoring and sampling device. Background Technology

[0002] Traditionally, buildings are equipped with hazardous gas monitoring devices to monitor indoor air quality. When the levels of hazardous gases exceed the standard, the monitoring devices will issue warning signals to remind people to take appropriate measures.

[0003] Existing technology discloses an indoor harmful gas monitoring device, including a mounting plate. A connecting block is bolted to the front left side of the mounting plate, and a monitoring box is fixedly connected to the front right side of the mounting plate. A door panel is hinged to the front of the monitoring box, and two glass panels are installed on the door panel. Multiple air vents are opened on the right side of the monitoring box. An air intake mechanism is installed on the front side of the connecting block, and a filter mechanism is installed at the bottom of the air intake mechanism. An early warning mechanism is installed inside the monitoring box, and an alarm is installed at the bottom of the monitoring box. The air intake mechanism includes a connecting ring, and a support frame is welded inside the connecting ring. A flange is installed on the right side of the connecting ring, and a rotating shaft is rotatably connected to the front side of the support frame. Multiple fan blades are installed on the rotating shaft. This utility model can filter dust mixed in the monitored air and accurately determine whether the indoor air contains toxic substances.

[0004] The aforementioned hazardous gas monitoring devices have simple gas monitoring functions, but they cannot effectively sample and collect indoor gases when the levels of hazardous gases exceed the standard, nor can they take corresponding improvement measures based on the sampling results to reduce the content of toxic gases indoors. Utility Model Content

[0005] This utility model provides an indoor air monitoring and sampling device. When the indoor air contains excessive levels of toxic gases, in addition to effectively monitoring the indoor air, it can also sample and analyze the gases, making it easier for subsequent workers to take corresponding improvement measures based on the sampling results.

[0006] This utility model provides an indoor air monitoring and sampling device, which includes: a monitoring box, the monitoring box including a monitoring mechanism and a sampling mechanism; the sampling mechanism is located inside the monitoring box; the sampling mechanism includes a sampling chamber and a gas guiding assembly; the gas guiding assembly includes a main gas guiding pipe, a branch gas guiding pipe and a gas guiding reversing device disposed between the two; the gas guiding reversing device is used to connect the corresponding branch gas guiding pipe according to the set gas concentration obtained by the monitoring mechanism.

[0007] Furthermore, the monitoring mechanism includes: a sensor for acquiring gas component content and / or gas concentration; and a gas monitor located inside the sampling chamber, with the gas guide pipes respectively connected to the gas monitors corresponding to the set gas concentration.

[0008] Furthermore, the gas guide pipe is spirally connected to the outer surface of the sampling chamber.

[0009] Furthermore, the monitoring box is equipped with a storage bin and a sampling bin drive mechanism; the sampling bin drive mechanism is used to drive the sampled sample bin into the storage bin.

[0010] Furthermore, the monitoring box is equipped with a purification chamber, which is used to purify the indoor air.

[0011] Furthermore, the sensor is movably mounted on the outer surface of the monitoring box via an angle adjustment device.

[0012] Furthermore, the angle adjustment device includes a moving block, which is connected to the outer surface of the monitoring box via an electric telescopic rod; the moving block is equipped with a rotating ball and a clamping plate inside, the sensor is movably connected to the rotating ball via a connecting rod, and the clamping plate is located on both sides of the rotating ball for clamping the rotating ball.

[0013] Furthermore, the monitoring box is detachably connected to the monitoring and sampling device.

[0014] Furthermore, the monitoring box has side grooves on both sides, which are connected by elastic bands, and the side grooves are movably connected to the elastic bands.

[0015] Furthermore, the monitoring and sampling device is equipped with a control panel, and both the monitoring mechanism and the sampling mechanism are communicatively connected to the control panel.

[0016] The beneficial effects of the technical solution provided by this utility model include:

[0017] This invention incorporates a sampling mechanism on top of a monitoring mechanism. By setting up a gas guiding component, indoor gas is introduced into a sampling chamber. The monitoring mechanism monitors the sample in the sampling chamber, which facilitates subsequent staff to propose remedial measures based on the sampling data, thereby reducing the content of toxic gases indoors. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a structural diagram of the monitoring box in a specific embodiment of the present utility model;

[0020] Figure 2 This is a structural diagram showing the connection between the main air guide pipe and the branch air guide pipe in a specific embodiment of this utility model;

[0021] Figure 3 This is a structural diagram showing the connection between the electromagnetic valve and the sampling chamber in a specific embodiment of this utility model;

[0022] Figure 4 This is a structural diagram showing the connection between the annular magnet and the main or branch pipe of the gas guide in a specific embodiment of this utility model.

[0023] Figure 5 This is a structural diagram showing the connection between the purification chamber and the monitoring box in a specific embodiment of this utility model;

[0024] Figure 6 This is a structural diagram showing the connection between the base plate and the monitoring box in a specific embodiment of this utility model;

[0025] Figure 7 This is a diagram showing the internal structure of the moving block in a specific embodiment of this utility model;

[0026] Figure 8 This is a structural diagram showing the connection between the side groove and the monitoring box in a specific embodiment of this utility model.

[0027] Explanation of reference numerals: 1. Monitoring box; 2. Sampling chamber; 3. Electromagnetic valve; 4. Sensor; 5. Connecting rod; 6. Rotating ball; 7. Clamping plate; 8. Main air guide pipe; 9. Branch air guide pipe; 10. Filter screen; 11. Moving block; 12. Electric telescopic rod; 13. Storage bin; 14. Purification chamber; 15. Air inlet pipe; 16. Exhaust pipe; 17. Hydraulic cylinder; 18. Electric push plate; 19. Support plate; 20. Control panel; 21. Side groove; 22. Elastic band; 23. Base plate; 24. Telescopic rod; 25. Casters; 26. Fixing component; 27. Vacuum pump; 28. Gas collection hood; 29. ​​Ring magnet. Detailed Implementation

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

[0029] See Figure 1 As shown in the figure, this utility model embodiment provides an indoor air monitoring and sampling device, which includes: a monitoring box 1, the monitoring box 1 including a monitoring mechanism and a sampling mechanism; the sampling mechanism is located inside the monitoring box 1.

[0030] The sampling mechanism includes a sampling chamber 2 and a gas guiding assembly. The gas guiding assembly includes a main gas guiding pipe 8, a branch gas guiding pipe 9, and a gas guiding reversing device disposed between them. The gas guiding reversing device is used to connect the corresponding branch gas guiding pipe 9 according to the set gas concentration obtained by the monitoring mechanism.

[0031] Furthermore, the monitoring device includes a sensor 4, which is used to acquire the content of gas components and / or the gas concentration. The sensor 4 is used to make a preliminary prediction of the indoor gas concentration or composition, and a filter 10 is provided on the surface of the sensor 4.

[0032] The sensor 4 includes, but is not limited to: an electrochemical sensor, which generates a current signal through a redox reaction of gas on an electrode surface, with the current intensity proportional to the gas concentration; the electrochemical sensor is used to monitor toxic gases such as CO, NO2, SO2, H2S, and O3. An infrared sensor, which utilizes the selective absorption of specific infrared wavelengths by gas molecules (e.g., CO2 absorbs at 4.26 μm) and calculates the concentration through light intensity attenuation; the infrared sensor is used to monitor gases such as CO2, CH4, and VOCs.

[0033] In some embodiments, the sensor 4 employs a dual-range sensor array, comprising a high-sensitivity electrochemical sensor and a wide-range infrared sensor, with an algorithm automatically switching between the primary and secondary sensors. Specifically, when the concentration of the gas to be monitored is low, the algorithm switches to the high-sensitivity electrochemical sensor; when the concentration of other gases to be monitored is too high, the algorithm switches to the wide-range infrared sensor.

[0034] In addition to the sensors described above, in some other embodiments, the sensor 4 also includes sensors for monitoring other sensors.

[0035] The monitoring mechanism also includes a gas monitor, which is located inside the sampling chamber 2. The gas guide pipes 9 are respectively connected to the gas monitors corresponding to the set gas concentration. The gas monitors employ high-precision instruments to further monitor the gas within the sampling chamber 2.

[0036] In some embodiments, a ring-shaped sensor array is provided along the gas distribution pipe 9, and the monitoring accuracy is improved through dual monitoring by the ring-shaped sensor array and the gas monitor.

[0037] In some embodiments, the monitoring and sampling device is provided with a control panel 20, and both the monitoring mechanism and the sampling mechanism are communicatively connected to the control panel 20.

[0038] Further, see Figure 2 As shown, the main air guide pipe 8 and the branch air guide pipes 9 are arranged in a tree-like pattern. See also... Figure 3 As shown, the two ends of the gas guiding assembly are connected to the monitoring box 1 and the sampling chamber 2 respectively via electromagnetic gas valves 3. An electromagnetic gas valve 3 is provided at the connection between the main gas guiding pipe 8 and the monitoring box 1, and a gas collecting hood 28 is provided at the through hole of the electromagnetic gas valve 3.

[0039] In some embodiments, see Figure 4 As shown, annular magnets 29 are provided along the electromagnetic valves on the sampling chamber 2 and the monitoring box 1. Annular magnets 29 are provided at both ends of the air guiding assembly. The connection between the air guiding assembly and the sampling chamber 2 and the monitoring box 1 is fixed by magnetic attraction.

[0040] In some embodiments, a gas diversion device is provided between the main gas pipe 8 and the branch gas pipe 9. The gas diversion device is used to connect the corresponding branch gas pipe 9 according to the set gas concentration obtained by the monitoring mechanism. The gas diversion device may employ different diversion valves or other gas diversion devices capable of switching gas paths.

[0041] In some embodiments, the main gas pipe 8 is provided with a rotary multi-channel valve body, which adopts a coaxially nested rotary valve core and stator valve seat. The valve core is driven to rotate by a stepper motor so that different gas passage interfaces are aligned with the gas branch pipe 9. The rotary multi-channel valve body replaces the directional air valve and the gas branch pipe 9.

[0042] In some embodiments, an electromagnetic pilot-operated pneumatic three-way valve is provided in the main air guide pipe 8. The pneumatic actuator is controlled by the miniature solenoid valve to push the valve stem to switch the air path direction. The electromagnetic pilot-operated pneumatic three-way valve replaces the directional air valve and the air guide branch pipe 9.

[0043] Furthermore, the gas paths are categorized according to preset concentrations, specifically into low-concentration gas paths, normal-concentration gas paths, and high-concentration gas paths, with different gas paths corresponding to different levels of sensitivity or different types of other monitoring instruments. Correspondingly, the reversing valve and the gas guide pipe 9 are divided according to air concentration, specifically into: low-concentration pipelines, normal-concentration pipelines, and high-concentration pipelines.

[0044] The high-concentration tube is connected to the sampling chamber 2 by a spiral connection. By optimizing the sampling path of the high-concentration gas, i.e. increasing the flow path of the high-concentration gas, the high concentration is evenly distributed in the gas guide tube 9, avoiding errors caused by excessively high or uneven local concentrations.

[0045] According to the above embodiment, the working process is as follows: The sensor 4 external to the monitoring box 1 makes a preliminary prediction of the indoor air composition and concentration. When the content or concentration of the indoor air composition is greater than or less than a preset value, the control panel 20 activates the electromagnetic valve 3 and drives the air pump, forcing indoor air into the sampling chamber 2 through the air guide assembly. Different reversing valves and air guide pipes 9 are selected according to different gas concentrations, and the gas inside the sampling chamber 2 is monitored by the gas monitor within the sampling chamber 2.

[0046] In some embodiments, the monitoring box 1 is provided with a storage bin 13 and a sampling bin drive mechanism inside; the sampling bin drive mechanism is used to drive the sampling bin 2 after sampling into the storage bin 13.

[0047] Furthermore, the storage silo 13 is equipped with an insulation mechanism and a sealing mechanism. Specifically, a temperature and humidity sensor, a dehumidifier, and a heater are installed inside the storage silo 13. The temperature and humidity sensor monitors changes in temperature and humidity inside the storage silo 13, and the dehumidifier and heater make dynamic adjustments in real time. The sealing mechanism includes gaskets and sealing rings, and sealing rings and gaskets are provided at the connection between the storage silo 13 and the monitoring box 1.

[0048] Further, see Figure 1 As shown, the sampling chamber drive mechanism includes a hydraulic cylinder 17 and an electric push plate 18. The hydraulic cylinder 17 and the electric push plate 18 are connected to the inner wall of the monitoring box 1. The output end of the hydraulic cylinder 17 is connected to a support plate 19, and the side of the support plate 19 away from the hydraulic cylinder 17 is connected to the sampling chamber 2. Furthermore, a drive air pump is also provided on the support plate 19, wherein the output end of the drive air pump is connected to the sampling chamber 2. Furthermore, infrared sensors are provided on the electric push plate 18 and the support plate 19. When the support plate 19 reaches a preset position, the electric push plate 18 is activated based on the signal from the infrared sensor.

[0049] In some embodiments, see Figure 5 As shown, the monitoring box 1 has a purification chamber 14 inside. The purification chamber 14 is connected to the monitoring box 1 through an air inlet pipe 15 and an exhaust pipe 16. The purification chamber 14 is used to purify the indoor air. Further, see... Figure 6 As shown, the monitoring box is detachably connected to the base plate 23. The top and bottom of the base plate 23 are respectively provided with a telescopic rod 24 and a caster wheel 25. The telescopic rod 24 is provided with a fixing member 26 on the side away from the base plate 23. The fixing member 26 is used to fix the air intake pipe 15 and the exhaust pipe 16.

[0050] Furthermore, the purification chamber 23 is equipped with activated carbon, an ultraviolet generator, and a formaldehyde removal agent. Furthermore, the purification chamber 23 is equipped with an exhaust pump and an exhaust pump, which perform preliminary purification of indoor air. Furthermore, the number of purification chambers can be arbitrary.

[0051] In some embodiments, see Figure 7 As shown, the sensor 4 is movably mounted on the outer surface of the monitoring box 1 via an angle adjustment device.

[0052] Furthermore, the angle adjustment device includes a moving block 11, which is connected to the outer surface of the monitoring box 1 via an electric telescopic rod 12. The moving block 11 contains a rotating ball 6 and a clamping plate 7. The sensor 4 is movably connected to the rotating ball 6 via a connecting rod 5. The clamping plates 7 are located on both sides of the rotating ball 6 and are used to clamp the rotating ball 6. The clamping plates 7 can be electrically or manually controlled.

[0053] Furthermore, the rotating ball 6 can be connected to the output end of the drive motor, and the drive motor drives the rotating ball 6 to rotate, realizing the omnidirectional automatic rotation of the rotating ball 6. This allows the sensor 4 to monitor the indoor gas in all directions, avoiding the reduction in monitoring accuracy due to excessively low or high local concentrations, and reducing the workload of operators.

[0054] In some embodiments, see Figure 8 As shown, the monitoring box 1 has side grooves 21 on both sides, and the side grooves 21 are connected by elastic bands 22. The side grooves 21 and the elastic bands 22 are movably connected.

[0055] Furthermore, a valve is provided on the outer wall of the monitoring box 1, corresponding to the sampling chamber 2 and the storage chamber 13, so that the operator can easily replace or remove the sampling chamber 2.

[0056] Based on the above embodiments, the working principle of this utility model is as follows:

[0057] The indoor air is initially monitored by the sensor 4 located outside the monitoring box 1. The sensor 4 connected to the rotating ball 6 is adjusted in all directions by rotating the ball 6. After the angle adjustment is completed, the clamp 7 is activated to fix the ball 6, thereby fixing the sensor 4.

[0058] When the content or concentration of indoor air components is greater than or less than a preset value, the solenoid valve 3 and the air pump are activated through the control panel 20. Depending on the gas concentration, different reversing valves and air guide pipes 9 are selected to force indoor air into the sampling chamber 2 through the main air guide pipe 8. The gas monitor inside the sampling chamber 2 is then used for detailed sampling and analysis.

[0059] After sampling is completed, the solenoid valve, reversing valve, and drive air pump are closed to stop gas introduction. The hydraulic cylinder 17 is then activated to lift the sampling chamber 2, which is located on the support plate 19. When the sampling chamber 2 reaches the same level as the storage silo 13, the electric push plate 18 is activated to push the sampling chamber 2 into the storage silo 13 for storage, facilitating subsequent analysis and research of the indoor air composition by the staff.

[0060] When the indoor gas flow rate is too low, the vacuum pump 27 is activated to reduce the internal pressure of the monitoring box 1, so that the gas can enter the gas guiding component and facilitate subsequent sampling.

[0061] When the concentration of harmful gases indoors exceeds the safety threshold, the purification chamber 14 is activated. The purification chamber 14 contains a gas purification agent. It also includes an exhaust pump and an exhaust pump, which perform preliminary purification of the indoor air.

[0062] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0063] It should be noted that in this invention, relational terms such as "first" and "second" are used merely 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0064] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features of the present invention.

Claims

1. An indoor air monitoring and sampling device, characterized in that, It includes: A monitoring box (1), which includes a monitoring mechanism and a sampling mechanism; The sampling mechanism is located inside the monitoring box (1); The sampling mechanism includes a sampling chamber (2) and an air guiding assembly; the air guiding assembly includes a main air guiding pipe (8), a branch air guiding pipe (9), and an air guiding reversing device disposed between the two. The gas diversion device is used to connect the corresponding gas diversion pipe (9) according to the set gas concentration obtained by the monitoring mechanism.

2. The indoor air monitoring and sampling device according to claim 1, characterized in that, The monitoring agencies include: Sensor (4), the sensor (4) is used to obtain the content of gas components and / or the concentration of the gas; A gas monitor is installed inside the sampling chamber (2), and the gas guide pipes (9) are respectively connected to the gas monitors corresponding to the set gas concentration.

3. The indoor air monitoring and sampling device according to claim 1 or 2, characterized in that, The gas guide pipe (9) is spirally connected to the outer surface of the sampling chamber (2).

4. The indoor air monitoring and sampling device according to claim 1, characterized in that, The monitoring box (1) is equipped with a storage bin (13) and a sampling bin drive mechanism; The sampling chamber drive mechanism is used to drive the sampling chamber (2) after sampling into the storage chamber (13).

5. The indoor air monitoring and sampling device according to claim 1, characterized in that, The monitoring box (1) is equipped with a purification chamber (14) inside, which is used to purify the indoor air.

6. The indoor air monitoring and sampling device according to claim 1, characterized in that, The sensor (4) is movably mounted on the outer surface of the monitoring box (1) via an angle adjustment device.

7. The indoor air monitoring and sampling device according to claim 6, characterized in that, The angle adjustment device includes a moving block (11), which is connected to the outer surface of the monitoring box (1) via an electric telescopic rod (12); The movable block (11) is equipped with a rotating ball (6) and a clamping plate (7). The sensor (4) is movably connected to the rotating ball (6) through a connecting rod (5). The clamping plate (7) is located on both sides of the rotating ball (6) and is used to clamp the rotating ball (6).

8. The indoor air monitoring and sampling device according to claim 1, characterized in that, The monitoring box (1) is detachably connected to the monitoring and sampling device.

9. The indoor air monitoring and sampling device according to claim 8, characterized in that, The monitoring box (1) has side grooves (21) on both sides, and the side grooves (21) are connected by elastic bands (22). The side grooves (21) and the elastic bands (22) are movably connected.

10. The indoor air monitoring device according to claim 1, characterized in that, The monitoring and sampling device is equipped with a control panel (20), and both the monitoring mechanism and the sampling mechanism are communicatively connected to the control panel (10).

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