A portable indoor environment air detection device

Abstract

The application relates to the technical field of air environment detection, and discloses a portable indoor environment air detection device, which comprises a box mechanism, an adjusting unit and a detection unit, the inner wall of the box mechanism is connected with the adjusting unit, the adjusting unit can adjust the gas in the detection direction, the adjusting unit can be matched with the detection unit, the gas in multiple directions can be synchronously detected, the box mechanism comprises an upper shell and a lower shell, the upper shell is hinged to the lower shell, a control panel is arranged on the top of the lower shell, the detection unit comprises a gas detection sensor and a support, the lower shell is divided into multiple independent detection areas by a cross-shaped partition plate, the adjusting and detection units are arranged in the areas, multiple-direction gas can be synchronously collected, an abnormal area can be quickly positioned, and the fault sensor can be efficiently checked by means of partitioned gas control and data comparison, so that the maintenance difficulty and time cost are greatly reduced, and the detection efficiency and positioning accuracy are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of air environment detection technology, and in particular to a portable indoor air environment detection device. Background Technology

[0002] The main purpose of indoor air quality testing is to ensure that the air quality of the construction and use environment meets national standards and industry specifications, thereby protecting the health and safety of personnel. This includes assessing the concentration of pollutants in indoor air and determining whether there are any exceedances or potential health risks.

[0003] Chinese Invention Patent Publication No. CN115876965A discloses a building indoor air environment detection device, including a support unit, a rotating unit, and a detection unit. The rotating unit and the detection unit are disposed within the support unit. The rotating unit drives the detection unit to rotate. The support unit includes a base and an end cap. The rotating unit includes a fixed shaft fixed between the end cap and a hollow column, a first rotating shaft sleeved on the fixed shaft, a second rotating shaft sleeved on the first rotating shaft, a first gear fixed at the end of the first rotating shaft, a rotating component disposed at the end of the second rotating shaft and cooperating with the first gear, a first driving component that drives the first rotating shaft to rotate, and a second driving component that drives the second rotating shaft to rotate.

[0004] The aforementioned existing technologies have the drawback of being unable to simultaneously detect gases from multiple directions. When the indoor environmental detection area is large, it is difficult to quickly locate the specific area with abnormal air quality, resulting in low detection efficiency and inaccurate positioning. In addition, when sensors malfunction, they need to be checked one by one, which increases the difficulty of maintenance and time costs. Summary of the Invention

[0005] The purpose of this invention is to provide a portable indoor ambient air quality testing device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a portable indoor ambient air detection device, comprising a housing mechanism, an adjustment unit, and a detection unit. The inner wall of the housing mechanism is connected to the adjustment unit, which is used to adjust the gas in the detection direction. The adjustment unit and the detection unit cooperate with each other to simultaneously detect the gas in multiple directions. The housing mechanism includes an upper shell and a lower shell.

[0007] The adjustment unit includes a collection pipe, which is located inside the lower shell. The end of the collection pipe away from the lower shell is provided with a top plate. An electric air pump is provided at the end of the collection pipe near the lower shell. A control chamber is fixedly provided on the outer surface of the collection pipe. A rotary motor is provided inside the control chamber.

[0008] The output end of the rotary motor is fixedly provided with a first filter plate. The output end of the rotary motor horizontally passes through the collection pipe and is rotatably installed inside the control chamber. The rotary motor can drive the first filter plate to deflect inside the collection pipe. A sealing ring is provided on the outside of the first filter plate. A second filter plate and a third filter plate are respectively provided near the first filter plate in the collection pipe. The second filter plate and the third filter plate are linearly arranged inside the collection pipe.

[0009] The adjustment unit also includes a partition plate, which is disposed inside the lower shell and divides the interior of the lower shell into multiple independent detection areas.

[0010] Preferably, the outer surface of the collection pipe is slidably disposed inside one side of the lower shell via a groove, and the surface of the top plate is provided with ventilation holes;

[0011] An electronic spring is provided between the second filter plate and the third filter plate. Both the second filter plate and the third filter plate are slidably connected to the collection pipe. The electronic spring can be electrically controlled to be in two working states: extension or contraction.

[0012] Preferably, when the electronic spring is in the extended state, it can drive the second filter plate to move away from the third filter plate, and when the electronic spring is in the contracted state, it can generate a pulling force on the second filter plate and control the second filter plate to move to one side of the third filter plate and fit together with it.

[0013] Preferably, a drive ring is provided on the surface of one end of the collection pipe extending into the lower shell, and a first micro push rod is provided on the outer side of the drive ring. The end of the first micro push rod away from the drive ring is fixedly disposed on one side of the inner wall of the lower shell. The first micro push rod can control the drive ring to slide horizontally inside the lower shell. A limiting rod is also provided on the outer side of the drive ring, and the end of the limiting rod away from the drive ring is fixedly disposed on the inner wall of the lower shell.

[0014] Preferably, both ends of the electronic spring are embedded inside one side of the second and third filter plates, so that when the electronic spring is in the contracted state, the third filter plate and the second filter plate can maintain a tight fit with each other. A second micro push rod is provided on the outer side of the third filter plate. The side of the second micro push rod away from the first filter plate is set on the inner wall of the collection pipe through a baffle. The second micro push rod can drive the third filter plate to slide horizontally along the inside of the collection pipe. Both the outer surfaces of the second and third filter plates are provided with sealing rings.

[0015] Preferably, both the second and third filter plates have filter holes on their surfaces, and the filter holes on the second and third filter plates are staggered.

[0016] When the second micro push rod drives the third filter plate to move along the inside of the collection pipe toward the second filter plate and fits tightly against the second filter plate, the collection pipe is no longer connected to the inside of the lower shell, and the shape and position of the filter holes on the first filter plate are consistent with the filter holes on the third filter plate.

[0017] Preferably, the partition plate is cross-shaped, and each independent detection area is equipped with a detection unit and an adjustment unit.

[0018] The lower shell has multiple air outlets inside, which can discharge air samples from different areas. Each air outlet is equipped with a solenoid valve, which can control the air outlet to be in an open or closed state.

[0019] Preferably, the surface of the partition plate is provided with a vent, and two sealing plates are symmetrically provided on the surface of the partition plate near the vent. When the two sealing plates are parallel to the surface of the partition plate, the two sealing plates are in contact with the surface of the partition plate, and the vent on the partition plate is in a sealed state.

[0020] The two sealing plates are equipped with drive shafts inside, and each sealing plate is equipped with a micro motor via the drive shaft. The micro motor can control the sealing plate to deflect along the axis of the drive shaft. A fixing block is provided at the end of the drive shaft away from the micro motor.

[0021] Preferably, the upper shell and the lower shell are hinged to each other. A control panel is installed on the top of the lower shell. A rotating shaft is provided above the lower shell. A mounting seat is provided on the outer surface of the rotating shaft. The mounting seat is located in the area between the rotating shaft and the lower shell. The mounting seat is rotatably connected to the rotating shaft. The mounting seat is used to support the rotating shaft and allows the rotating shaft to deflect stably on the mounting seat. Two connecting rods are symmetrically provided on the outer surface of the rotating shaft near the mounting seat. The ends of the two connecting rods away from the rotating shaft are connected to the upper shell. The length and width of the upper shell are consistent with the length and width of the lower shell.

[0022] The technical effects and advantages of this invention are as follows:

[0023] 1. This invention divides the lower shell into multiple independent detection zones using a cross-shaped partition plate. Each zone is equipped with an adjustment and detection unit, which can simultaneously collect gas from multiple directions, quickly locate abnormal areas, and efficiently troubleshoot faulty sensors by using zoned gas control and data comparison. This significantly reduces maintenance difficulty and time costs, and significantly improves detection efficiency and positioning accuracy.

[0024] 2. This invention, through the cooperation of flow sensor and other related components, when the flow sensor detects that the flow rate of the collection pipeline is lower than the preset value, firstly, the second filter plate is driven by an electronic spring to reciprocate, so that it frequently collides with the first filter plate. The vibration shakes off the dust on the surface of the first filter plate. If the cleaning effect is not good, the air outlets in some areas can be closed and the multi-area electric air pump can be turned on to make the gas converge to form a high pressure. With the help of the second micro push rod, the third filter plate is pushed to move with the second filter plate. The two filter plates are frequently separated by electronic spring control to realize pulse backflushing of the first filter plate.

[0025] In addition, a rotary motor drives the first filter plate to deflect, allowing it to fully contact and impact the second filter plate, enhancing the cleaning effect. During the cleaning process, the first micro push rod controls the collection pipe to extend to its maximum distance, preventing dust from flowing back into the lower housing. The electric air pump is activated to suction, allowing the accumulated dust to be discharged through the top plate. This cleaning mechanism does not require manual disassembly and can automatically clean the filter plates, ensuring unobstructed collection pipes, reducing equipment downtime for maintenance, and maintaining stable detection accuracy. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a top view of the overall structure of the present invention;

[0028] Figure 3 This is a bottom view of the overall structure of the present invention;

[0029] Figure 4 This is a schematic diagram of the overall open state structure of the present invention;

[0030] Figure 5 This is a schematic diagram of the adjustment unit in the open state of the present invention;

[0031] Figure 6 This is a schematic diagram of the data acquisition pipeline and related structures of the present invention;

[0032] Figure 7 This is a schematic diagram of the separator and related structures of the present invention;

[0033] Figure 8 This is a schematic diagram of the control compartment in the open state of the present invention;

[0034] Figure 9 This is a schematic diagram of the internal distribution structure of the lower shell of the present invention;

[0035] Figure 10 This is a schematic diagram of the third filter plate and the second filter plate of the present invention in the cleaning working state;

[0036] Figure 11 This is a schematic diagram of the first filter plate of the present invention in the first cleaning working state;

[0037] Figure 12 This is a schematic diagram of the first filter plate of the present invention in the second cleaning working state.

[0038] In the picture:

[0039] 1. Housing structure; 101. Lower shell; 102. Drive motor; 103. Upper shell; 104. Control panel; 105. Groove; 106. Mounting base; 107. Electronic LCD screen; 108. Handle; 109. Connecting rod;

[0040] 2. Adjustment unit; 201. Acquisition pipe; 202. Top plate; 203. Limiting rod; 204. Drive ring; 205. First micro push rod; 206. Air outlet; 207. Divider plate; 208. Micro motor; 209. First filter plate; 210. Second filter plate; 211. Third filter plate; 212. Second micro push rod; 213. Electric air pump; 214. Control chamber; 215. Fixing block; 216. Sealing plate; 217. Sealing ring; 218. Rotary motor;

[0041] 3. Detection unit; 301. Gas detection sensor; 302. Support. Detailed Implementation

[0042] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0043] This invention provides, for example Figures 1 to 12 The portable indoor air quality testing device shown includes a housing 1, an adjustment unit 2, and a detection unit 3. The inner wall of the housing 1 is connected to the adjustment unit 2. The adjustment unit 2 can adjust the gas in the detection direction, and the adjustment unit 2 can cooperate with the detection unit 3 to realize the synchronous detection of gas in multiple directions in the room, thereby determining the direction of the area with abnormal air quality, which is convenient for workers to carry out rectification work in indoor areas with abnormal air quality.

[0044] The housing mechanism 1 includes a lower shell 101, a rotating shaft is provided on the upper part of the lower shell 101, and a mounting seat 106 is provided on the outer surface of the rotating shaft. The mounting seat 106 is located in the area between the rotating shaft and the lower shell 101. The mounting seat 106 is rotatably connected to the rotating shaft. The mounting seat 106 is used to support the rotating shaft and allows the rotating shaft to deflect stably on the mounting seat 106. Two connecting rods 109 are symmetrically provided on the outer surface of the rotating shaft near the mounting seat 106. The ends of the two connecting rods 109 away from the rotating shaft are fixedly connected to an upper shell 103, and the length and width of the upper shell 103 are consistent with the length and width of the lower shell 101.

[0045] A drive motor 102 is provided at either end of the rotating shaft. The drive motor 102 can drive the rotating shaft and control its deflection. The drive motor 102 can drive two symmetrically arranged connecting rods 109 to deflect through the rotating shaft. In this way, the upper shell 103 can be driven to rotate along the axis of the rotating shaft through the two connecting rods 109, thereby making the bottom of the upper shell 103 fit tightly with the top of the lower shell 101, achieving a sealing effect on the lower shell 101. In addition, a carrying handle 108 is provided on the top of the upper shell 103, which can facilitate the lifting and transportation of the entire device, further improving convenience.

[0046] The lower shell 101 has a control panel 104 on its inner wall near the upper shell 103. The surface of the control panel 104 is provided with an electronic LCD screen 107 and multiple operation buttons. The lower shell 101 has an adjustment unit 2 and a detection unit 3 inside. The multiple operation buttons are used to turn on the adjustment unit 2 and the detection unit 3 and drive the adjustment unit 2 to cooperate with the detection unit 3 to detect the ambient air quality in different directions. In addition, the bottom of the lower shell 101 is provided with multiple casters for transportation.

[0047] The adjustment unit 2 includes a collection pipe 201. The outer surface of the collection pipe 201 is slidably disposed inside one side of the lower shell 101 through a groove 105. A top plate 202 is provided at the end of the collection pipe 201 away from the lower shell 101, and an electric air pump 213 is provided at the end of the collection pipe 201 away from the top plate 202. The surface of the top plate 202 is provided with ventilation holes. The electric air pump 213 can use the ventilation holes on the surface of the collection pipe 201 and the top plate 202 to draw the gas in the indoor environment into the lower shell 101, thereby completing the purpose of sampling the gas in the environment.

[0048] A control chamber 214 is fixedly provided on the outer surface of the collection pipe 201. A rotary motor 218 is provided inside the control chamber 214. A first filter plate 209 is fixedly provided at the output end of the rotary motor 218. The output end of the rotary motor 218 passes horizontally through the collection pipe 201 and is rotatably disposed inside the control chamber 214. The rotary motor 218 can drive the first filter plate 209 to deflect within the collection pipe 201. A sealing ring 217 is provided on the outer side of the first filter plate 209. The sealing ring 217 is made of flexible rubber, which can provide a certain degree of flexibility while ensuring the sealing between the first filter plate 209 and the inner wall of the collection pipe 201.

[0049] Near the first filter plate 209, a second filter plate 210 and a third filter plate 211 are respectively arranged in the sampling pipe 201. The second filter plate 210 and the third filter plate 211 are linearly arranged inside the sampling pipe 201. An electronic spring is provided between the second filter plate 210 and the third filter plate 211. Both the second filter plate 210 and the third filter plate 211 are slidably connected to the sampling pipe 201. The electronic spring can be electrically controlled to be in two working states: extension and contraction. When the electronic spring is in the extension state, it can drive the second filter plate 210 to move away from the third filter plate 211. When the electronic spring is in the contraction state, it can generate a pulling force on the second filter plate 210 and control the second filter plate 211. The electronic spring moves to one side of the third filter plate 211 and fits against it. Both ends of the electronic spring are embedded inside one side of the second filter plate 210 and the third filter plate 211. In this way, when the electronic spring is in the contracted state, the third filter plate 211 and the second filter plate 210 can maintain a tight fit with each other. The outer side of the third filter plate 211 is provided with a second micro push rod 212. The side of the second micro push rod 212 away from the first filter plate 209 is set on the inner wall of the collection pipe 201 through a baffle. The second micro push rod 212 can drive the third filter plate 211 to slide horizontally along the inside of the collection pipe 201. The outer surfaces of the second filter plate 210 and the third filter plate 211 are provided with sealing rings 217.

[0050] A drive ring 204 is provided on the surface of one end of the collection pipe 201 extending into the lower shell 101. A first micro push rod 205 is provided on the outside of the drive ring 204. The end of the first micro push rod 205 away from the drive ring 204 is fixedly set on one side of the inner wall of the lower shell 101. The first micro push rod 205 can control the drive ring 204 to slide horizontally inside the lower shell 101. A limiting rod 203 is also provided on the outside of the drive ring 204. The end of the limiting rod 203 away from the drive ring 204 is fixedly set on the inner wall of the lower shell 101.

[0051] Both the second filter plate 210 and the third filter plate 211 have filter holes on their surfaces. The filter holes on the second filter plate 210 and the filter holes on the third filter plate 211 are set to be staggered. When the second micro push rod 212 drives the third filter plate 211 to move along the inside of the collection pipe 201 toward the second filter plate 210 and fits tightly against the second filter plate 210, the collection pipe 201 is no longer connected to the inside of the lower shell 101. The shape and position of the filter holes on the first filter plate 209 are consistent with the filter holes on the third filter plate 211.

[0052] The lower shell 101 has a partition plate 207 inside, which is cross-shaped and can divide the space inside the lower shell 101 into multiple independent detection areas. Each independent detection area is equipped with a detection unit 3 and an adjustment unit 2. The lower shell 101 has multiple air outlets 206 inside, which can discharge air samples from different areas. The air outlets 206 are equipped with electromagnetic valves, which can control the air outlets 206 to be in an open or closed state. The multiple detection units 3 can work with the multiple adjustment units 2 to achieve the effect of detecting the spatial quality of different areas.

[0053] The adjustment unit 2 includes a gas detection sensor 301. The bottom of the gas detection sensor 301 is provided with a support 302. The gas detection sensor 301 is fixedly installed inside the lower shell 101 through the support 302. Each gas detection sensor 301 and support 302 are located above the gas outlet 206. A gap is provided between each gas detection sensor 301, support 302 and gas outlet 206 to ensure that the air sample can be quickly discharged from the shell during the detection of gas quality in different areas, so as to avoid gas accumulation and errors in the detection results.

[0054] The surface of the partition plate 207 is provided with ventilation openings. Two sealing plates 216 are symmetrically arranged on the surface of the partition plate 207 near the ventilation openings. When the two sealing plates 216 are parallel to the surface of the partition plate 207, the two sealing plates 216 are in contact with the surface of the partition plate 207, and the ventilation openings on the partition plate 207 are in a sealed state. The interior of the two sealing plates 216 is provided with a drive shaft. Each sealing plate 216 is provided with a micro motor 208 through the drive shaft. The micro motor 208 can control the sealing plate 216 to deflect along the axis of the drive shaft through the drive shaft. The end of the drive shaft away from the micro motor 208 is provided with a fixing block 215. The fixing block 215 can provide stable limit for the drive shaft during deflection. When there is an angle between the sealing plate 216 and the surface of the partition plate 207 (out of parallel state), the ventilation openings on the partition plate 207 are in an open state.

[0055] In use, simply pull the handle 108 and use the multiple casters below the housing mechanism 1 to quickly move it to the indoor environment to be tested. Then, turn on the drive motor 102 to rotate the shaft along the inside of the mounting base 106. The rotation of the shaft will drive the two connecting rods 109 to deflect, which will cause the upper shell 103 to deflect outward. At this time, simply turn on the multiple electric air pumps 213 and the gas detection sensor 301 inside the lower shell 101 through the control panel 104. Then, the ambient air is drawn into the lower shell 101 through the collection pipe 201 and the top plate 202. The gas to be tested is delivered to the surface of the gas detection sensor 301 through the collection pipe 201 and the electric air pumps 213. The gas detection sensor 301 then analyzes and detects the gas and sends the detection results to the electronic LCD screen 107, thereby realizing the detection of indoor ambient gas quality.

[0056] During the sampling process, the first filter plate 209, the second filter plate 210, and the third filter plate 211 simultaneously intercept particulate matter or dust in the gas sample in the collection pipe 201, thereby achieving the effect of filtering impurities in the sample gas. This can prevent gas carrying impurities or dust particles from entering the lower shell 101 and adhering to the surface of the gas detection sensor 301, thus affecting the detection results of the gas detection sensor 301.

[0057] When the indoor environmental monitoring area is large, it is necessary to monitor the gas from multiple directions. In this case, the following improvement plan is proposed:

[0058] The first micro push rod 205 is used to retract and apply tension to the limiting ring, which allows the drive ring 204 and the collection pipe 201 to move towards the inner wall of the lower shell 101. The collection pipe 201 slides outward from the inside on one side of the inner wall of the lower shell 101. As the collection pipe 201 extends outward along the inside of the lower shell 101, the collection range is increased. Secondly, the lower shell 101 is equipped with multiple adjustment units 2. Therefore, multiple first micro push rods 205 are used to control the drive ring 204 and the collection pipe 201 to extend in four different directions along the lower shell 101. Then, the micro motor 208 is in the initial state, keeping the multiple independent detection areas inside the lower shell 101 sealed to each other. The gas sample entering each independent detection area only needs to be discharged outward through the gas outlet 206 in the corresponding area (see details). Figure 9 This allows for the detection of gas quality in a large detection environment and in different directional areas.

[0059] Although multiple miniature push rods 205, in conjunction with multiple adjustment units 2, can extend in different directions along the interior of the lower shell 101 to achieve the effect of gas quality detection in a large indoor environment, the gas detection sensor 301 has a limited lifespan. When the gas detection sensor 301 in one of the independent detection areas is damaged, it is impossible to determine which area is damaged, thus requiring manual troubleshooting step by step, which wastes a lot of repair time and costs. Based on this, the following improvement scheme is proposed:

[0060] Due to the interaction between the interior of the lower shell 101 and the partition plate 207, the interior of the lower shell 101 is divided into multiple independent detection spaces, and each independent detection space is labeled as: region A, region B, region C, and region D (see details for specific configurations). Figure 9 Each independent detection space is equipped with an adjustment unit 2 and a detection unit 3. Therefore, the electromagnetic valves (not shown in the figure) in the air outlets 206 of regions C, B and A are controlled to be closed, so that the gas samples in regions C, B and A cannot be discharged to the outside through the air outlets 206 of regions C, B and A. Then, the two micro motors 208 in regions A, B, C and D are controlled to drive the sealing plate 216 to deflect (the sealing plate 216 between regions A and D does not deflect, so as to ensure that the gas sample entering cannot directly enter region D through region A, so that it can flow along a specific route), so that the gas samples between regions A, B, C and D can be interconnected. Finally, the electric air pumps 213 in regions C, B and D are closed in sequence, and the electronic springs in regions C and B are used to contract, thereby controlling the second filter plate 210 to move along the collection pipe 201 towards the third filter plate 211 and to stick to the surface of the third filter plate 211.

[0061] Because the filter holes on the third filter plate 211 and the second filter plate 210 have opposite shapes and are misaligned, the collection pipes 201 in regions B and C are closed. Furthermore, since the air outlets 206 in regions C, B, and A are closed, the electric air pump 213 in region A draws external gas into the lower shell 101 through the collection channel. After the gas sample enters region A, the gas detection sensor 301 in region A detects and analyzes the gas sample, then records the gas's index data. Because the air outlet 206 in region A is closed, the gas sample will... Gas samples are gradually introduced into areas B, C, and D through the vents on the partition plate 207. Since the third filter plate 211 and the second filter plate 210 in areas B and C remain in contact, the gas sample will flow through area D and then be discharged out through the outlet 206. During this process, the working status of each gas detection sensor 301 and the gas index data analyzed from the gas sample can be detected in sequence. At this time, it is only necessary to compare the data of the gas detection sensors 301 in areas A, B, C, and D to quickly determine whether there is any damage. If there is damage, the damaged area can be quickly located, and repair or replacement can be carried out quickly.

[0062] After the above adjustments, if, by comparing the gas index data detected by the gas detection sensors 301 in the four regions, it is found that the gas index data of the gas detection sensor 301 in region B is higher than the preset value, then it is in an abnormal state. At this time, the micro motor 208 between region A and region B drives the two symmetrically arranged sealing plates 216 to deflect 30° towards the gas detection sensor 301, and makes the gas detection sensor 301 located in the middle region of the two sealing plates 216 after the deflection state. Then, the micro motor 208 between region B and region C drives the two symmetrically arranged sealing plates 216 to deflect 30° towards the gas detection sensor 301, and makes the gas detection sensor 301 located in the middle region of the two sealing plates 216 after the deflection state. Then, the gas detection sensor 301 is located in the middle region of the two sealing plates 216 after the deflection state. The electric air pump 213 is in the on state and draws external gas into the lower shell 101 through the collection pipe 201. During this process, the air outlets 206 in areas C and A remain closed, and the sealing plate 216 between areas D and A remains closed. The sealing plate 216 between areas D and C remains parallel to the partition plate 207 (gas in area D cannot enter areas C and A). In this way, the electric air pump 213 in areas C and A will deliver all the external gas to area B, and in conjunction with the sealing plates 216 between areas B and A and between areas B and C, guide the gas to the surface of the gas detection sensor 301, thereby cleaning the surface of the gas detection sensor 301 in area B.

[0063] Secondly, turn on the electric air pump 213 in area B and set it to suction mode. This allows smaller dust particles and other impurities to be discharged to the outside through the air outlet 206 and the collection pipe 201. Then, compare the gas index data analyzed by the gas detection sensor 301 in area B again. If it returns to normal, continue to detect the indoor environment gas. If the gas index data is still abnormal, it means that the gas detection sensor 301 in area B has distorted detection or is damaged. Replace it immediately. (If the working conditions cannot support immediate replacement, control the sealing plate 216 between area B and area C or area A to deflect with the micro motor 208 so that the gas collected in area B can flow with area A or area C. Then, continue to contact the gas detection sensor 301 in the adjacent area for detection.) During the above adjustment process, control the extension of multiple first micro push rods 205 and move them towards the inside of the lower shell 101 through multiple limit rings and the collection pipe 201 to ensure that the lower shell 101 always maintains a high air pressure state in this state.

[0064] When performing multi-directional gas detection in a large indoor space, environmental factors (such as areas with high dust, sand, or dirt) can cause dust, sand, or a large amount of dirt to accumulate on the surface of the first filter plate 209 during gas collection through multiple collection pipes 201. This can lead to blockage on the side of the first filter plate 209 facing the top plate 202, thus affecting the detection data of the gas detection sensor 301 in the corresponding area. Based on this, the following adjustment scheme is proposed:

[0065] A flow sensor (not shown in the figure) is installed in the area of ​​the collection pipe 201 near the electric air pump 213 in each region. The flow sensor can collect gas flow data in the pipe 201 in each region and determine whether the first filter plate 209 is blocked based on the gas flow data in each collection pipe 201.

[0066] If the flow sensor in area A detects that the flow rate in the collection pipe 201 is lower than a preset value, the electronic spring on the third filter plate 211 is extended, causing the second filter plate 210 to move along the inside of the collection pipe 201 toward the first filter plate 209, making one side of the second filter plate 210 contact the first filter plate 209. Then, the electronic spring is retracted, causing the second filter plate 210 to move toward the third filter plate 211 and return to its initial position. In this way, the reciprocating motion of the electronic spring causes one side of the second filter plate 210 to frequently contact and impact one side of the first filter plate 209. The vibration generated by the impact shakes off the dust adhering to the surface of the first filter plate 209 facing the top plate 202, thereby cleaning the surface of the first filter plate 209.

[0067] If, after the above adjustments, the flow sensor in area A still detects a slight increase in gas flow rate within the sampling pipe 201, but it remains below the preset value, then the solenoid valves at the outlets 206 in areas B, C, and D are closed. Subsequently, the rotary motors 218 in areas A, B, C, and D are activated, and the sealing plates 216 are deflected along the drive shaft by the rotary motors 218, allowing gas samples in areas A, B, C, and D to flow between each other. Simultaneously, the electric air pumps 213 in areas B, C, and D are activated to extract gas samples from the outside through the sampling pipe. The gas samples then enter the lower shell 101 and pass through the vents on the partition plates 207 in each area. Since the outlets 206 in areas B, C, and D are closed, the gas samples in all four areas will... All air enters area A through partition plate 207, increasing the air pressure within area A. The second micro-push rod 212 in area A then applies a thrust to one side of the third push rod, controlling the third filter plate 211 and the second filter plate 210 to move along the collection pipe 201 towards the first filter plate 209. During this process, an electronic spring contracts, ensuring the second filter plate 210 remains in close contact with the third filter plate 211, moving them to one side of the first filter plate 209. The electronic spring then frequently contracts and extends, causing frequent separation between the second and third filter plates. This, combined with the high air pressure in area A, allows the third filter plate 211 and the second filter plate 210 to pulse-like backflush the first filter plate 209 (see details for specific states). Figure 10 This achieves the effect of cleaning the surface dust of the first filter plate 209.

[0068] Because the sampling pipe 201 in area A draws external gas into the lower shell 101 through the top plate 202, and the gas sample in the sampling pipe 201 first passes through the first filter plate 209, and then through the second filter plate 210 and the third filter plate 211, the dust particles and impurities attached to or clogging the first filter plate 209 are higher than those on the second filter plate 210 and the third filter plate 211. During the cleaning process of the first filter plate 209, the rotary motor 218 drives the first filter plate 209 to deflect along the inside of the sampling pipe 201, so that the upper and lower parts of the first filter plate 209 frequently contact and impact the surface of the second filter plate 210. The resulting vibration, combined with the pulse-type backflushing in this state, further improves the cleaning effect of the first filter plate 209 (see details). Figure 11 The dust particles cleaned from the first filter plate 209 and the second filter plate 210 will accumulate in the area between the first filter plate 209 and the top plate 202, and in the area between the first filter plate 209 and the second filter plate 210. By controlling the second micro push rod 212, the third filter plate 211 is moved a certain distance away from the first filter plate 209, and the electronic spring is controlled to be in a contracted state, causing the third filter plate 211 to separate from the second filter plate 210. The rotary motor 218 then drives the first filter plate 209 to deflect 180° in the collection pipe 201 (see details for specific states). Figure 12 Then, in conjunction with the high air pressure in area A, the electric air pump 213 in area A is turned on and set to suction mode. Thus, with the three areas supplying gas to area A, the electric air pump 213 in area A is in suction mode, thereby enabling the dust particles accumulated in the area in front of the first filter plate 209 and in front of the second filter plate 210 to be discharged to the outside through the top plate 202. Secondly, when cleaning the accumulated dust particles, the first micro push rod 205 is controlled to retract, and the drive ring 204 is controlled to drive the collection pipe 201 to extend to the outside to the maximum distance, so as to prevent the blown floating dust from returning to the lower shell 101.

[0069] It is worth noting that the electronic spring used in the above scheme is a mature existing technology. Its principle is to control the deformation of the active material or electromagnetic force through electrical signals (voltage / current) to achieve dynamic length adjustment.

[0070] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A portable indoor ambient air quality testing device, comprising a housing (1), an adjustment unit (2), and a detection unit (3), characterized in that: The inner wall of the housing mechanism (1) is connected to the adjustment unit (2). The adjustment unit (2) is used to adjust the gas in the detection direction. The adjustment unit (2) and the detection unit (3) cooperate with each other to simultaneously detect the gas in multiple directions. The adjustment unit (2) includes a collection pipe (201), which is located inside the lower shell (101). The end of the collection pipe (201) away from the lower shell (101) is provided with a top plate (202). The end of the collection pipe (201) near the lower shell (101) is provided with an electric air pump (213). A control chamber (214) is fixedly provided on the outer surface of the collection pipe (201). A rotary motor (218) is provided inside the control chamber (214). The output end of the rotary motor (218) is fixedly provided with a first filter plate (209). The output end of the rotary motor (218) is horizontally inserted through the collection pipe (201) and rotatably disposed inside the control chamber (214). The rotary motor (218) can drive the first filter plate (209) to deflect within the collection pipe (201). A sealing ring (217) is provided on the outer side of the first filter plate (209). A second filter plate (210) and a third filter plate (211) are respectively provided near the first filter plate (209) in the collection pipe (201). The second filter plate (210) and the third filter plate (211) are linearly arranged inside the collection pipe (201). The adjustment unit (2) also includes a partition plate (207), which is disposed inside the lower shell (101) and divides the interior of the lower shell (101) into multiple independent detection areas; The partition plate (207) is in the shape of a cross. Each independent detection area is equipped with a detection unit (3) and an adjustment unit (2). The lower shell (101) is equipped with multiple air outlets (206). The lower shell (101) can discharge air samples from different areas to the outside through multiple air outlets (206). The air outlets (206) are equipped with electromagnetic valves. The electromagnetic valves can control the air outlets (206) to be in an open or closed state. The surface of the partition plate (207) is provided with a vent. Two sealing plates (216) are symmetrically provided on the surface of the partition plate (207) near the vent. When the surfaces of the two sealing plates (216) and the partition plate (207) are parallel to each other, the surfaces of the two sealing plates (216) and the partition plate (207) are in contact with each other, and the vent on the partition plate (207) is in a sealed state. The interior of the two sealing plates (216) is provided with a drive shaft. Both sealing plates (216) are provided with a micro motor (208) through the drive shaft. The micro motor (208) can control the sealing plate (216) to deflect along the axis of the drive shaft. The end of the drive shaft away from the micro motor (208) is provided with a fixing block (215).

2. The portable indoor ambient air quality detection device according to claim 1, characterized in that: The outer surface of the collection pipe (201) is slidably disposed inside one side of the lower shell (101) via a groove (105), and the surface of the top plate (202) is provided with ventilation holes; An electronic spring is provided between the second filter plate (210) and the third filter plate (211). Both the second filter plate (210) and the third filter plate (211) are slidably connected to the collection pipe (201). The electronic spring can be electrically controlled to be in two working states: extension or contraction.

3. The portable indoor ambient air quality detection device according to claim 2, characterized in that: When the electronic spring is in the extended state, it can drive the second filter plate (210) to move away from the third filter plate (211), and when the electronic spring is in the contracted state, it can generate a pulling force on the second filter plate (210) and control the second filter plate (210) to move to one side of the third filter plate (211) and fit together with it.

4. The portable indoor ambient air quality detection device according to claim 1, characterized in that: The collection pipe (201) extends into the interior of the lower shell (101) and is provided with a drive ring (204). A first micro push rod (205) is provided on the outer side of the drive ring (204). The end of the first micro push rod (205) away from the drive ring (204) is fixedly set on one side of the inner wall of the lower shell (101). The first micro push rod (205) can control the drive ring (204) to slide horizontally inside the lower shell (101). A limiting rod (203) is also provided on the outer side of the drive ring (204). The end of the limiting rod (203) away from the drive ring (204) is fixedly set on the inner wall of the lower shell (101).

5. A portable indoor ambient air quality testing device according to claim 3, characterized in that: Both ends of the electronic spring are embedded inside one side of the second filter plate (210) and the third filter plate (211). When the electronic spring is in the contracted state, the third filter plate (211) and the second filter plate (210) are tightly fitted together. A second micro push rod (212) is provided on the outside of the third filter plate (211). The side of the second micro push rod (212) away from the first filter plate (209) is set on the inner wall of the collection pipe (201) through a baffle. The second micro push rod (212) can drive the third filter plate (211) to slide horizontally along the inside of the collection pipe (201). Both the outer surfaces of the second filter plate (210) and the third filter plate (211) are provided with sealing rings (217).

6. A portable indoor ambient air quality testing device according to claim 3, characterized in that: Both the second filter plate (210) and the third filter plate (211) have filter holes on their surfaces, and the filter holes on the second filter plate (210) and the filter holes on the third filter plate (211) are misaligned. When the second micro push rod (212) drives the third filter plate (211) to move along the inside of the collection pipe (201) toward the second filter plate (210) and fits tightly against the second filter plate (210), the collection pipe (201) is no longer connected to the inside of the lower shell (101), and the shape and position of the filter holes on the first filter plate (209) are consistent with the filter holes on the third filter plate (211).

7. A portable indoor ambient air quality testing device according to claim 1, characterized in that: The housing mechanism (1) includes an upper shell (103) and a lower shell (101). The upper shell (103) and the lower shell (101) are hinged to each other. A control panel (104) is installed on the top of the lower shell (101). A rotating shaft is provided above the lower shell (101). A mounting seat (106) is provided on the outer surface of the rotating shaft. The mounting seat (106) is located in the area between the rotating shaft and the lower shell (101). The mounting seat (106) is rotatably connected to the rotating shaft. The mounting seat (106) is used to support the rotating shaft and allows the rotating shaft to deflect stably on the mounting seat (106). Two connecting rods (109) are symmetrically provided on the outer surface of the rotating shaft near the mounting seat (106). The ends of the two connecting rods (109) away from the rotating shaft are connected to the upper shell (103). The length and width of the upper shell (103) are consistent with the length and width of the lower shell (101).

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