Portable indoor environment air detection equipment

Abstract

The invention relates to the technical field of air environment detection, and discloses a portable indoor environment air detection device which comprises a box body mechanism, an adjusting unit and a detection unit, the inner wall of the box body mechanism is connected with the adjusting unit, the adjusting unit can adjust gas in a detection direction, and the adjusting unit can be matched with the detection unit. The gas detection device comprises a box body mechanism and a detection unit, the box body mechanism is used for synchronously detecting gas in multiple directions, the box body mechanism comprises an upper shell and a lower shell, the upper shell is hinged to the lower shell, a control panel is installed on the top of the lower shell, and the detection unit comprises a gas detection sensor and a support. The multi-direction gas can be synchronously collected, the abnormal area can be quickly positioned, fault sensors can be efficiently checked by means of partition gas control and data comparison, the maintenance difficulty and time cost are greatly reduced, and the detection efficiency and the positioning accuracy are remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air environment detection, in particular to a portable indoor environment air detection device. BACKGROUND

[0002] The main purpose of indoor environment air environment detection 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, which includes evaluating the concentration of pollutants in indoor air to determine whether there are excessive or potential health risks.

[0003] Chinese invention patent publication No. CN115876965A discloses a building indoor air environment detection device, which comprises a bearing unit, a rotating unit and a detection unit. The rotating unit and the detection unit are arranged in the bearing unit, and the rotating unit drives the detection unit to rotate. The bearing unit comprises a base body and an end cover. The rotating unit comprises a fixed shaft fixed between the end cover 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 part arranged at the end of the second rotating shaft and matched with the first gear, a first driving part driving the first rotating shaft to rotate, and a second driving part driving the second rotating shaft to rotate.

[0004] In the above-mentioned prior art, it is not possible to simultaneously detect the gas in multiple directions, and when the indoor environment detection area is large, it is difficult to quickly locate the specific area of abnormal air quality, resulting in low detection efficiency and inaccurate positioning. In addition, when the sensor fails, it needs to be checked one by one, which increases the maintenance difficulty and time cost. SUMMARY

[0005] The purpose of the present application is to provide a portable indoor environment air detection device to solve the problems raised in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solution: a portable indoor environment air detection device, comprising 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 is used to adjust the gas in the detection direction, and the adjusting unit and the detection unit cooperate with each other to simultaneously detect the gas in multiple directions. The box mechanism comprises an upper shell and a lower shell. The adjusting unit comprises a collection pipeline, which is arranged inside the lower shell. The end of the collection pipeline away from the lower shell is provided with a top plate, and the end of the collection pipeline close to the lower shell is provided with an electric air pump. The outer surface of the collection pipeline is fixedly provided with a control bin, and the inside of the control bin is provided with a rotary motor. The output end of the rotary motor is fixedly provided with a first filter plate, the output end of the rotary motor penetrates through the collection pipeline horizontally and is rotationally arranged in the control bin, the rotary motor can drive the first filter plate to deflect in the collection pipeline, the outer side of the first filter plate is provided with a sealing ring, the collection pipeline is provided with a second filter plate and a third filter plate near the first filter plate respectively, and the second filter plate and the third filter plate are linearly arranged in the collection pipeline. The adjusting unit further comprises a partition plate arranged in the interior of the lower shell, and the partition plate divides the interior of the lower shell into multiple independent detection areas.

[0007] Preferably, the outer side surface of the collection pipeline is arranged in the interior of one side of the lower shell through a groove, and the surface of the top plate is provided with a ventilation hole. An electronic spring is arranged between the second filter plate and the third filter plate, and the second filter plate and the third filter plate are both in sliding connection with the collection pipeline, and the electronic spring can be in two working states of elongation and contraction through electric control.

[0008] Preferably, when the electronic spring is in the elongation state, the second filter plate can be driven to move away from the third filter plate, and when the electronic spring is in the contraction state, the second filter plate can be pulled and controlled to move to one side of the third filter plate and be attached to the third filter plate.

[0009] Preferably, the surface of one end of the collection pipeline extending into the interior of the lower shell is provided with a driving ring, the outer side of the driving ring is provided with a first micro push rod, one end of the first micro push rod away from the driving ring is fixedly arranged on one side of the inner wall of the lower shell, the first micro push rod can control the driving ring to slide horizontally in the interior of the lower shell, and the outer side of the driving ring is further provided with a limiting rod, one end of the limiting rod away from the driving ring is fixedly arranged on the inner wall of the lower shell.

[0010] Preferably, the left and right ends of the electronic spring are both embedded in the interior of one side of the second filter plate and the third filter plate, so that when the electronic spring is in the contraction state, the third filter plate and the second filter plate can be kept in close attachment, the outer side of the third filter plate is provided with a second micro push rod, one side of the second micro push rod away from the first filter plate is arranged on the inner wall of the collection pipeline through a baffle, the second micro push rod can drive the third filter plate to slide horizontally in the interior of the collection pipeline, and the outer side surfaces of the second filter plate and the third filter plate are both provided with sealing rings.

[0011] Preferably, the surfaces of the second filter plate and the third filter plate are both provided with filter holes, and the filter holes on the second filter plate and the third filter plate are in mutual misalignment. When the second micro push rod drives the third filter plate to move along the direction of the second filter plate inside the collection pipeline and tightly abuts against the second filter plate, the collection pipeline is no longer in communication with the inside of the lower shell, and the shape and position of the filter holes on the first filter plate are consistent with those on the third filter plate.

[0012] Preferably, the shape of the partition plate is a "cross" shape, and each independent detection area is provided with a detection unit and an adjusting unit inside. The inside of the lower shell is provided with a plurality of air outlets, the lower shell can discharge air samples in different areas outside through the plurality of air outlets, and the inside of the air outlet is provided with an electromagnetic air valve, which can control the air outlet to be in an open state or a closed state.

[0013] Preferably, the surface of the partition plate is provided with a ventilation opening, and the surface of the partition plate close to the ventilation opening is symmetrically provided with two blocking plates. When the two blocking plates are in a parallel state with the surface of the partition plate, the two blocking plates are in close contact with the surface of the partition plate, and the ventilation opening on the partition plate is in a sealed state. The inside of the two blocking plates is provided with a driving shaft, and the two blocking plates are provided with a micro motor through the driving shaft. The micro motor can control the deflection of the blocking plate along the axis of the driving shaft. The end portion of the driving shaft away from the micro motor is provided with a fixed block.

[0014] Preferably, the upper shell and the lower shell are hingedly connected, the top of the lower shell is provided with a control panel, the upper side of the lower shell is provided with a rotating shaft, the outer side surface of the rotating shaft is provided with a mounting seat, the mounting seat is located between the rotating shaft and the lower shell, the mounting seat is rotatably connected with the rotating shaft, the mounting seat is used for supporting the rotating shaft and enabling the rotating shaft to stably deflect on the mounting seat, the outer side surface of the rotating shaft close to the mounting seat is symmetrically provided with two connecting rods, the end portions of the two connecting rods away from the rotating shaft are connected with the upper shell, and the length and width of the upper shell are consistent with those of the lower shell.

[0015] The technical effects and advantages of the present application are as follows: 1. The present application divides the lower shell into a plurality of independent detection areas by a cross-shaped partition plate, each area is provided with an adjusting and detection unit, can synchronously collect multi-directional gas, quickly locates the abnormal area, and can efficiently check the fault sensor, greatly reduces the maintenance difficulty and time cost, and significantly improves the detection efficiency and positioning accuracy.

[0016] 2、The present application is provided with flow sensor and other related components, when the flow sensor detects that the flow of the collection pipeline is lower than the preset value, the second filter plate is driven to reciprocate by the electronic spring first, so that it collides with the first filter plate frequently, and the dust on the surface of the first filter plate is shaken off by vibration, if the cleaning effect is poor, part of the area air outlet can be closed, and the multi-area electric air pump can be opened, so that the gas is gathered to form high gas pressure, and the third filter plate is pushed to move with the second micro push rod, and the two filter plates are separated frequently by the electronic spring control, so that the pulse type back blowing of the first filter plate is realized; In addition, the first filter plate is deflected by the rotary motor, so that it is in full contact with the second filter plate and collides, and the cleaning effect is enhanced, during the cleaning process, the first micro push rod controls the collection pipeline to stretch to the maximum distance, so that the floating dust is prevented from flowing back to the inside of the lower shell, the electric air pump is opened in the air suction mode, so that the accumulated dust can be discharged through the top plate, the cleaning mechanism set does not need manual disassembly, and the filter plate cleaning can be automatically completed, the collection pipeline is ensured to be smooth, the equipment downtime maintenance time is reduced, and the detection accuracy is maintained stable. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure schematic view of the present application; Figure 2 It is a whole structure top view of the present application; Figure 3 It is a whole structure bottom view of the present application; Figure 4 It is a whole structure schematic view of the present application in an open state; Figure 5 It is a whole structure schematic view of the present application in an open state; Figure 6 It is a collection pipeline and related structure schematic view of the present application; Figure 7 It is a separation plate and related structure schematic view of the present application; Figure 8 It is a control bin open state structure schematic view of the present application; Figure 9 It is a lower shell internal distribution state structure schematic view of the present application; Figure 10 It is a third filter plate and second filter plate in a cleaning working state structure schematic view of the present application; Figure 11 It is a first filter plate in a first cleaning working state structure schematic view of the present application; Figure 12 It is a first filter plate in a second cleaning working state structure schematic view of the present application.

[0018] In the figure: 1, box mechanism; 101, lower shell; 102, drive motor; 103, upper shell; 104, control panel; 105, groove; 106, mounting seat; 107, electronic liquid crystal screen; 108, hand-held handle; 109, connecting rod; 2, adjusting unit; 201, collection pipeline; 202, top plate; 203, limiting rod; 204, drive ring; 205, first micro push rod; 206, gas outlet; 207, partition 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 bin; 215, fixed block; 216, plugging plate; 217, sealing ring; 218, rotary motor; 3, detection unit; 301, gas detection sensor; 302, support. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0020] The present application provides a kind of portable indoor environment air detection equipment as shown in Figures 1 to 12 It includes box mechanism 1, adjusting unit 2 and detection unit 3, the inner wall of box mechanism 1 is connected with adjusting unit 2, adjusting unit 2 can adjust the gas of detection direction, and adjusting unit 2 can be mutually matched with detection unit 3 to realize the synchronous detection of the gas in multiple directions of indoor, so as to judge the area direction of air anomaly, it is convenient for operating worker to carry out rectification work to indoor area of air quality anomaly.

[0021] Box mechanism 1 includes lower shell 101, the upper side of lower shell 101 is equipped with rotating shaft, the outer surface of rotating shaft is equipped with mounting seat 106, mounting seat 106 is located between rotating shaft and lower shell 101 area, mounting seat 106 is rotationally connected with rotating shaft, mounting seat 106 is used to support rotating shaft, and rotating shaft can be deflected on mounting seat 106 stably, the outer surface of rotating shaft close to mounting seat 106 is symmetrically equipped with two connecting rods 109, the end portion of two connecting rods 109 away from rotating shaft is fixedly connected with upper shell 103, and the length and width of upper shell 103 keep consistent with the length and width of lower shell 101.

[0022] The drive motor 102 is arranged at any one end of the rotating shaft, and the drive motor 102 can drive the rotating shaft and control the deflection thereof. The drive motor 102 can drive the two symmetrical connecting rods 109 to deflect through the rotating shaft, so that the two connecting rods 109 can drive the upper shell 103 to rotate along the axis of the rotating shaft, and then the bottom of the upper shell 103 is tightly fitted with the top of the lower shell 101, so as to realize the sealing effect of the lower shell 101. The top of the upper shell 103 is provided with a hand handle 108, which can facilitate the lifting and transportation of the whole device, and further improves the convenience.

[0023] The control panel 104 is arranged on the inner wall of the lower shell 101 close to the upper shell 103. The surface of the control panel 104 is provided with an electronic liquid crystal screen 107 and a plurality of operation buttons. The inside of the lower shell 101 is provided with an adjusting unit 2 and a detection unit 3. The plurality of operation buttons are used to start the work of the adjusting unit 2 and the detection unit 3, and drive the adjusting unit 2 to cooperate with the detection unit 3 to detect the environmental air quality in different directions. In addition, the bottom of the lower shell 101 is provided with a plurality of universal wheels for transportation.

[0024] The adjusting unit 2 comprises a collection pipeline 201. The outer surface of the collection pipeline 201 is slidably arranged in the inside of one side of the lower shell 101 through the groove 105. The end of the collection pipeline 201 away from the lower shell 101 is provided with a top plate 202. The end of the collection pipeline 201 away from the top plate 202 is provided with an electric air pump 213. The surface of the top plate 202 is provided with a ventilation hole. The electric air pump 213 can suck the gas in the indoor environment into the inside of the lower shell 101 through the collection pipeline 201 and the ventilation hole on the surface of the top plate 202, so as to complete the sampling purpose of the gas in the environment.

[0025] The outer surface of the collection pipeline 201 is fixedly provided with a control bin 214. The inside of the control bin 214 is provided with a rotary motor 218. 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 horizontally penetrates the collection pipeline 201 and is rotatably arranged in the inside of the control bin 214. The rotary motor 218 can drive the first filter plate 209 to deflect in the collection pipeline 201. The outer side of the first filter plate 209 is provided with a sealing ring 217. The material of the sealing ring 217 is flexible rubber material, which can provide a certain flexibility while ensuring the sealing between the first filter plate 209 and the inner wall of the collection pipeline 201.

[0026] The second filter plate 210 and the third filter plate 211 are linearly arranged in the inside of the collection pipeline 201, and an electronic spring is arranged between the second filter plate 210 and the third filter plate 211. The second filter plate 210 and the third filter plate 211 are in sliding connection with the collection pipeline 201. The electronic spring can be controlled by electricity to be in two working states of elongation and contraction. When the electronic spring is in the elongation state, the second filter plate 210 can be driven to move away from the third filter plate 211. When the electronic spring is in the contraction state, the second filter plate 210 can be pulled and controlled to move to one side of the third filter plate 211 and be in close contact with the third filter plate 211. The left and right ends of the electronic spring are embedded in the inside of one side of the second filter plate 210 and the third filter plate 211. When the electronic spring is in the contraction state, the third filter plate 211 and the second filter plate 210 can be kept in close contact with each other. The outside of the third filter plate 211 is provided with a second micro push rod 212. The second micro push rod 212 is away from one side of the first filter plate 209 and is arranged on the inner wall of the collection pipeline 201 through a baffle. The second micro push rod 212 can drive the third filter plate 211 to slide horizontally in the inside of the collection pipeline 201. The outer surfaces of the second filter plate 210 and the third filter plate 211 are provided with sealing rings 217.

[0027] The end surface of the collection pipeline 201 extending to the inside of the lower shell 101 is provided with a driving ring 204. The outside of the driving ring 204 is provided with a first micro push rod 205. One end of the first micro push rod 205 away from the driving ring 204 is fixedly arranged on one side of the inner wall of the lower shell 101. The first micro push rod 205 can control the driving ring 204 to slide horizontally in the inside of the lower shell 101. The outside of the driving ring 204 is further provided with a limiting rod 203. One end of the limiting rod 203 away from the driving ring 204 is fixedly arranged on the inner wall of the lower shell 101.

[0028] The surfaces of the second filter plate 210 and the third filter plate 211 are provided with filter holes. The filter holes on the second filter plate 210 and the third filter plate 211 are arranged to be staggered with each other. When the second micro push rod 212 drives the third filter plate 211 to move to the direction of the second filter plate 210 in the inside of the collection pipeline 201 and be in close contact with the second filter plate 210, the collection pipeline 201 is no longer in communication with the inside of the lower shell 101. The shape and position of the filter holes on the first filter plate 209 are consistent with those of the filter holes on the third filter plate 211.

[0029] The inside of the lower shell 101 is provided with a partition plate 207, the partition plate 207 is in the shape of a “cross”, and the partition plate 207 can divide the space inside the lower shell 101 into multiple independent detection areas, each of which is provided with a detection unit 3 and an adjusting unit 2, and the inside of the lower shell 101 is provided with multiple air outlets 206. The lower shell 101 can discharge air samples in different areas through the multiple air outlets 206, and the inside of the air outlet 206 is provided with an electromagnetic air valve, which can control the air outlet 206 to be in an open state or a closed state. Multiple detection units 3 can cooperate with multiple adjusting units 2 to achieve the effect of detecting the quality of different areas.

[0030] The adjusting unit 2 includes a gas detection sensor 301, and the bottom of the gas detection sensor 301 is provided with a support 302. The gas detection sensor 301 is fixedly arranged in the inside of the lower shell 101 through the support 302, and each gas detection sensor 301 and the support 302 are located above the air outlet 206. A gap is arranged between each gas detection sensor 301, the support 302 and the air outlet 206, so that the air sample can be quickly discharged from the shell during the detection of the gas quality in different areas, and the accumulation of gas is avoided to avoid errors in the detection results.

[0031] The surface of the partition plate 207 is provided with a ventilation port, and the surface of the partition plate 207 close to the ventilation port is symmetrically provided with two plugging plates 216. When the two plugging plates 216 and the surface of the partition plate 207 are in a mutually parallel state, the two plugging plates 216 and the surface of the partition plate 207 are mutually attached, and the ventilation port on the partition plate 207 is in a sealed state. The inside of the two plugging plates 216 is provided with a driving shaft, and the two plugging plates 216 are provided with a micro motor 208 through the driving shaft. The micro motor 208 can control the deflection of the plugging plate 216 along the axis of the driving shaft through the driving shaft. The end portion of the driving shaft away from the micro motor 208 is provided with a fixed block 215, which can provide stable positioning purpose for the driving shaft during deflection. When the plugging plate 216 and the surface of the partition plate 207 form an included angle (out of the mutually parallel state), the ventilation port on the partition plate 207 is in an open state.

[0032] When in use, only need to pull the hand handle 108 to match the multiple universal wheels below the box body mechanism 1, can quickly move to the indoor environment inside which needs to be detected, then open the driving motor 102 to rotate the shaft along the inside of the mounting seat 106 to rotate, and use the rotation of the rotating shaft to drive the two connecting rods 109 to deflect, so that the two connecting rods 109 can drive the upper shell 103 to deflect outward, at this time only need to open the multiple electric air pumps 213 and gas detection sensors 301 in the inside of the lower shell 101 synchronously through the control panel 104, and through the collection pipeline 201 cooperate with the top plate 202 to suck the external environment air into the inside of the lower shell 101, use the collection pipeline 201 and the electric air pump 213 to cooperate to transport the gas to be detected to the surface of the gas detection sensor 301, at this time the gas detection sensor 301 starts to analyze and detect the gas transported in, then sends the detection result to the electronic liquid crystal screen 107, so as to realize the work of detecting the indoor environment gas quality.

[0033] In the sampling work process, the first filter plate 209, the second filter plate 210 and the third filter plate 211 respectively intercept the particulate matter or dust in the gas sample in the collection pipeline 201 synchronously, so as to realize the effect of filtering the impurities in the sample gas, so that the gas carrying impurities or dust particles can not adhere to the surface of the gas detection sensor 301 after entering the inside of the lower shell 101, so as to affect the detection result of the gas detection sensor 301.

[0034] When the indoor environment detection area is large, multiple directions of gas need to be detected, at this time the scheme makes the following improvement scheme: Use the first micro push rod 205 to retract and exert a pulling force on the limiting ring, so that the driving ring 204 and the collection pipeline 201 move towards the inner wall of the lower shell 101, and the collection pipeline 201 slides outward inside one side of the inner wall of the lower shell 101, so that the collection pipeline 201 extends outward along the inside of the lower shell 101, thereby improving the collection range, and the inside of the lower shell 101 is provided with multiple adjusting units 2, therefore, the driving ring 204 and the collection pipeline 201 are controlled to extend in four different directions of the lower shell 101 by using multiple first micro push rods 205, then the micro motor 208 is in the initial state and makes the multiple independent detection areas in the inside of the lower shell 101 keep sealed state with each other, and the gas sample entering each independent detection area can be discharged outward through the gas outlet 206 in the corresponding area (for details, please refer to Figure 9 ), so as to realize the effect of detecting the gas quality of different directions in a large detection environment.

[0035] Although the multiple first micro-push rods 205 can be matched with the multiple adjusting units 2 to extend in different directions along the inside of the lower shell 101, the effect of meeting the gas quality detection in a larger indoor environment can be achieved, but since the service life of the gas detection sensor 301 is limited, when the gas detection sensor 301 in one of the independent detection areas is damaged, it is difficult to determine which area is damaged, and then manual inspection is required in sequence, thereby wasting a lot of maintenance time and cost. Based on this, the following improvement scheme is made: Due to the cooperation between the inside of the lower shell 101 and the partition plate 207, multiple independent detection spaces are formed in the lower shell 101, and each independent detection space is marked as: A area, B area, C area and D area (for details, please refer to Figure 9 Each independent detection space is provided with an adjusting unit 2 and a detection unit 3, so that the electromagnetic air valve (not shown in the figure) in the gas outlet 206 in the C area, B area and A area is controlled to be in a closed state, so that the gas sample in the C area, B area and A area cannot be discharged outside through the gas outlet 206 in the C area, B area and A area. Subsequently, the two micro-motors 208 in the A area, B area, C area and D area drive the blocking plate 216 to deflect (the blocking plate 216 between the A area and the D area does not deflect to ensure that the entering gas sample cannot enter the D area directly through the A area, so that it can flow along a specific route), so that the gas sample between the A area, B area, C area and D area can be connected with each other. Finally, the electric air pump 213 in the C area, B area and D area is closed in sequence, and the electronic spring in the C area and B area is retracted, so as to control the second filter plate 210 to move along the collection pipeline 201 to the direction of the third filter plate 211 and be attached to the surface of the third filter plate 211.

[0036] Thus, the collection pipeline 201 in the B region and the C region is in a closed state due to the third filter plate 211 and the second filter plate 210 being opposite in shape and being misaligned with each other. Then, since the gas outlet 206 in the C region, the B region and the A region is in a closed state, the external gas is only sucked into the lower shell 101 through the collection channel by using the electric air pump 213 in the A region. Then, the gas sample enters the A region and is detected and analyzed by using the gas detection sensor 301 in the A region. Then, the index data of the gas is recorded. Since the gas outlet 206 in the A region is in a closed state, the gas sample gradually enters the B region, the C region and the D region through the ventilation opening on the partition plate 207. Since the third filter plate 211 and the second filter plate 210 in the B region and the C region always remain in a closed state, the gas sample flows to the D region and is discharged outwardly through the gas outlet 206. In this process, the working state of each gas detection sensor 301 and the gas index data analyzed by contacting the gas sample can be detected in sequence. Then, the data of the gas detection sensor 301 in the A region, the B region, the C region and the D region can be compared to quickly determine whether there is damage. If there is damage, the damaged region can be quickly located, and the damaged region can be quickly repaired or replaced.

[0037] After the above adjustment, if it is found through comparison of the gas index data detected by the gas detection sensor 301 in the four regions that the gas index data of the gas detection sensor 301 in the B region is higher than the preset value, the gas detection sensor 301 is in an abnormal state. Then, the micro motor 208 between the A region and the B region is controlled to drive the two symmetrically arranged blocking plates 216 to deflect 30° toward the gas detection sensor 301, and the gas detection sensor 301 is located in the middle region of the two blocking plates 216 in the deflected state. Then, the micro motor 208 between the B region and the C region is controlled to drive the two symmetrically arranged blocking plates 216 to deflect 30° toward the gas detection sensor 301, and the gas detection sensor 301 is located in the middle region of the two blocking plates 216 in the deflected state. Then, the electric air pump 213 in the C region and the A region is in an open state, and the external gas is sucked into the lower shell 101 through the collection pipeline 201. In this process, the gas outlet 206 in the C region and the A region is still in a closed state, the blocking plate 216 between the D region and the A region is in a closed state, and the blocking plate 216 between the D region and the C region is still in a parallel state with the partition plate 207 (the gas in the D region cannot enter the C region and the A region). Thus, the electric air pump 213 in the C region and the A region can deliver the external gas to the B region, and the blocking plate 216 between the B region and the A region and the blocking plate 216 between the B region and the C region can guide the gas to the surface of the gas detection sensor 301, thereby cleaning the surface of the gas detection sensor 301 in the B region.

[0038] Secondly, the electric air pump 213 in the B area is turned on and set to the air suction mode, so that smaller dust and other impurities can be discharged to the outside through the air outlet 206 and the collection pipeline 201 at the same time, and then the gas index data analyzed by the gas detection sensor 301 in the B area is compared again. If it returns to normal, it can continue to restore the work of detecting indoor environmental gas, if it is still abnormal, it means that the gas detection sensor 301 in the B area has detection distortion or damage, and can be replaced immediately (if the working condition cannot support immediate replacement at this time, the sealing plate 216 between the B area and the C area or the A area is deflected by the cooperation of the micro motor 208, so that the gas collected by the B area can flow with the A area or the C area. The gas detection sensor 301 in the adjacent area can continue to detect), and then in the above adjustment process, the first micro push rod 205 is controlled to extend, and moves to the inside of the lower shell 101 through the plurality of limiting rings and the collection pipeline 201, so that the lower shell 101 always maintains a high pressure state in this state.

[0039] When normally detecting gas in multiple directions in a large indoor space, due to environmental factors (areas with more dust, more sand, or more dust), the dust, sand, or a large amount of dust intercepted by the collection pipeline 201 will accumulate on the surface of the first filter plate 209 during the process of collecting gas through the plurality of collection pipelines 201, thereby forming a jam on the side surface of the first filter plate 209 facing the top plate 202, and affecting the detection data of the gas detection sensor 301 in the corresponding area. Based on this, the following adjustment scheme is proposed in the present scheme: A flow sensor (not shown in the figure) is arranged in the area of the collection pipeline 201 close to the electric air pump 213 in each area, and the flow sensor can be used to detect the gas flow data in each collection pipeline 201, and determine whether the first filter plate 209 is blocked based on the gas flow data in each collection pipeline 201.

[0040] If the flow sensor in the A area detects that the flow data in the collection pipeline 201 is lower than the preset value, the electronic spring on the third filter plate 211 is controlled to extend, and the second filter plate 210 is driven to move along the inside of the collection pipeline 201 towards the first filter plate 209, and the second filter plate 210 is in contact with one side of the first filter plate 209. Then, the electronic spring is controlled to contract, and the second filter plate 210 is driven to move towards the third filter plate 211 and return to the initial position. Through the reciprocating movement of the electronic spring, the side surface of the second filter plate 210 frequently contacts and collides with one side of the first filter plate 209, and the vibration generated by the collision shakes off the dust attached to the side surface of the first filter plate 209 facing the top plate 202, thereby achieving the effect of cleaning the surface of the first filter plate 209.

[0041] If the flow sensor in the A area still detects that the gas flow data in the collection pipeline 201 has recovered after the above adjustment, but is still lower than the preset value, the electromagnetic valves in the gas outlets 206 of the B, C and D areas are controlled to be closed, and then the rotary motors 218 in the A, B, C and D areas are started, and the rotary motors 218 drive the blocking plates 216 to deflect along the drive shafts, so that the gas samples in the A, B, C and D areas can flow into each other. At this time, the electric air pumps 213 in the B, C and D areas are simultaneously started to draw gas samples from the outside through the sampling pipeline, and then the gas samples enter the inside of the lower shell 101 and pass through the ventilation holes in the partition plates 207 in each area. Since the gas outlets 206 in the B, C and D areas are closed, the gas samples in the four areas will all enter the inside of the A area through the partition plates 207, and the gas pressure in the A area will increase at this time. Then, the second micro push rod 212 in the A area is controlled to apply a pushing force to one side of the third push rod, and the third filter plate 211 and the second filter plate 210 are controlled to move along the collection pipeline 201 towards the first filter plate 209. In this process, the electronic spring is contracted, so that the second filter plate 210 is always in close contact with the third filter plate 211 during the movement of the third filter plate 211 and the second filter plate 210, and the third filter plate 211 and the second filter plate 210 move to the side surface of the first filter plate 209. Then, the electronic spring is controlled to frequently contract and extend, so that the second filter plate 210 and the third filter plate 211 frequently separate. In this way, in cooperation with the high gas pressure in the A area, the first filter plate 209 is subjected to pulse-type back blowing (for details, please refer to Figure 10 ) through the third filter plate 211 and the second filter plate 210, thereby achieving the effect of cleaning the dust on the surface of the first filter plate 209.

[0042] Since the collecting pipe 201 in the A area draws the external gas into the lower shell 101 through the top plate 202, the gas sample in the collecting pipe 201 will firstly pass through the first filter plate 209, and then pass through the second filter plate 210 and the third filter plate 211, so the dust particles and impurities adhered or blocked on the first filter plate 209 are higher than those on the second filter plate 210 and the third filter plate 211. In the process of cleaning the first filter plate 209, the first filter plate 209 is driven to deflect along the inside of the collecting pipe 201 by the rotary motor 218, so that the upper part and the lower part of the first filter plate 209 frequently contact and impact the surface of the second filter plate 210, so that the vibration generated in this state is combined with the pulse back blowing in this state to further improve the cleaning effect of the first filter plate 209 (for details, please refer to Figure 11 ). The dust particles cleaned from the first filter plate 209 and the second filter plate 210 are accumulated in the area between the first filter plate 209 and the top plate 202 and the area between the first filter plate 209 and the second filter plate 210. Then, the third filter plate 211 is driven to move away from the first filter plate 209 by a distance by the second micro push rod 212, and the electronic spring is in a retracted state, so that the third filter plate 211 and the second filter plate 210 are separated from each other. The first filter plate 209 is deflected to 180° in the collecting pipe 201 by the rotary motor 218 (for details, please refer to Figure 12 ), and then combined with the high pressure state in the A area. Then, the electric air pump 213 in the A area is turned on and set to the suction mode, so that the dust particles accumulated in front of the first filter plate 209 and between the first filter plate 209 and the second filter plate 210 are discharged to the outside through the top plate 202 in the state of transporting the gas in the three areas. In addition, when cleaning the accumulated dust particles, the first micro push rod 205 is controlled to retract, and the collecting pipe 201 is driven to extend to the maximum distance outside by the driving ring 204, so as to avoid the floating dust returning to the inside of the lower shell 101.

[0043] It is worth noting that the electronic spring used in the above scheme is a mature existing technology, and its principle is to control the deformation of active materials or electromagnetic force by electrical signals (voltage / current) to achieve dynamic length adjustment.

[0044] Finally, it should be noted that the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application 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 replacements to some technical features, as long as they are within the spirit and principles of the present application. Any modification, equivalent replacement, improvement, etc. made shall be included in the protection scope of the present application.

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 housing mechanism (1) includes an upper shell (103) and a lower shell (101). 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) horizontally passes through the collection pipe (201) and is rotatably arranged inside the control chamber (214). The rotary motor (218) can drive the first filter plate (209) to deflect inside the collection pipe (201). A sealing ring (217) is provided on the outside 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.

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 partition plate (207) is cross-shaped, and each independent detection area is equipped with a detection unit (3) and an adjustment unit (2). The lower shell (101) is provided with multiple air outlets (206) inside. The lower shell (101) can discharge air samples from different areas to the outside through the multiple air outlets (206). The air outlets (206) are provided with electromagnetic valves inside. The electromagnetic valves can control the air outlets (206) to be in an open or closed state.

8. A portable indoor ambient air quality testing device according to claim 1, characterized in that: The surface of the partition plate (207) is provided with ventilation openings. Two sealing plates (216) are symmetrically provided on the surface of the partition plate (207) near the ventilation openings. When the two sealing plates (216) and the surface of the partition plate (207) are parallel to each other, the two sealing plates (216) and the surface of the partition plate (207) are in contact with each other, and the ventilation openings on the partition plate (207) are in a sealed state. The two sealing plates (216) are equipped with drive shafts inside. Each of the two sealing plates (216) is equipped with a micro motor (208) via 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 equipped with a fixing block (215).

9. A portable indoor ambient air quality testing device according to claim 1, characterized in that: 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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