CN116380573A - Miniature air quality monitoring station - Google Patents
Miniature air quality monitoring station Download PDFInfo
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- CN116380573A CN116380573A CN202310643238.5A CN202310643238A CN116380573A CN 116380573 A CN116380573 A CN 116380573A CN 202310643238 A CN202310643238 A CN 202310643238A CN 116380573 A CN116380573 A CN 116380573A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 149
- 230000007246 mechanism Effects 0.000 claims abstract description 134
- 238000001514 detection method Methods 0.000 claims abstract description 54
- 238000004140 cleaning Methods 0.000 claims abstract description 28
- 238000007789 sealing Methods 0.000 claims description 51
- 238000007664 blowing Methods 0.000 claims description 50
- 230000001681 protective effect Effects 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 8
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 8
- 241001330002 Bambuseae Species 0.000 claims description 8
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 8
- 239000011425 bamboo Substances 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 3
- 230000009471 action Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000002829 reductive effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N1/2205—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with filters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/68—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements
- B01D46/681—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements by scrapers, brushes or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
- B01D46/72—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with backwash arms, shoes or nozzles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2273—Atmospheric sampling
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/26—Devices for withdrawing samples in the gaseous state with provision for intake from several spaces
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
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Abstract
The invention discloses an air quality miniature monitoring station, which relates to the technical field of air quality detection and comprises a monitoring shell, an air suction mechanism, an air monitoring mechanism and an air inlet mechanism, wherein the air suction mechanism is communicated with the air inlet mechanism and the air monitoring mechanism, the air inlet mechanism comprises a support, air inlet cylinders, a central shell and a cleaning mechanism, four air inlet cylinders which are circumferentially distributed are arranged on the central shell, two air inlet cylinders are transverse cylinders and horizontally and rotatably arranged on the support, the other two air inlet cylinders are vertical cylinders, a plurality of air inlets are arranged on the air inlet cylinders, and a filter screen is arranged in the air inlets. The miniature monitoring station can perform horizontal plane wide area monitoring, vertical plane wide area monitoring and vertical direction multi-point height-fixing monitoring on the air quality, has wider coverage range of air collection points, more accurate detection results, can reduce air detection errors, can automatically clean a filter screen, avoids air inlet blockage, and ensures that air monitoring is performed normally.
Description
Technical Field
The invention relates to the technical field of air quality detection, in particular to an air quality miniature monitoring station.
Background
The air quality miniature monitoring station, namely the miniature air station, is mainly used for monitoring PM2.5, PM10, CO, SO2, NO2, O3, TVOC, temperature, humidity, wind speed, wind direction and other data, and is mainly applied to urban and enterprise atmospheric environment monitoring, atmosphere meshing, factory and plant area unorganized emission pollution gas monitoring and the like. The monitoring data can be uploaded to a self-built private cloud platform, and can also be directly connected with a data center in a networking mode.
The existing miniature air quality monitoring station has the following problems:
in theory, the larger the coverage range of the air quality miniature monitoring station is, the more accurate the air quality detection result is, but the existing air quality miniature monitoring station is usually provided with only one air inlet at a fixed position, and can only monitor the quality of air in a small range near the air inlet, the coverage range is smaller, and especially under the condition of poor air flowability, the monitoring result of one air inlet is often inaccurate, is not representative and is easy to have larger error;
the air quality miniature monitoring stations are often fixed at fixed positions, so that gradient monitoring cannot be carried out on the air quality of layers with different heights, and the vertical condition of air quality distribution cannot be obtained;
the air quality miniature monitoring station sucks air through the air suction device and detects the air through various sensors, and large particle impurities in the air are filtered by the filtering device at the air inlet, so that the large particle impurities are prevented from being sucked into the air quality monitoring station; over time, more and more impurities accumulate on the filtering device at the air inlet, which easily causes air inlet blockage and air inflow reduction, and influences normal air monitoring.
The foregoing is not necessarily a prior art, and falls within the technical scope of the inventors.
Disclosure of Invention
Based on this, it is necessary to provide an air quality miniature monitoring station in view of the above technical problems.
In order to achieve the above purpose, the invention provides an air quality miniature monitoring station, which comprises a monitoring shell, wherein an air suction mechanism and an air monitoring mechanism are arranged in the monitoring shell, an air inlet mechanism is arranged at the top of the monitoring shell, the air suction mechanism is communicated with the air inlet mechanism and the air monitoring mechanism, the air inlet mechanism comprises a bracket, an air inlet cylinder, a central shell, a spline shaft, a first driving mechanism, a second driving mechanism and a cleaning mechanism, the bracket is fixedly connected with the top of the monitoring shell, four air inlet cylinders which are circumferentially distributed are arranged on the central shell, two air inlet cylinders which are oppositely arranged are vertical cylinders and horizontally and rotatably arranged on the bracket, the other two air inlet cylinders which are oppositely arranged are vertical cylinders and rotatably driven by the second driving mechanism are arranged on the air inlet cylinders along the axial direction of the air inlet cylinders, a filter screen is arranged in the air inlet cylinders, a spline shaft is rotatably arranged in each air inlet cylinder, and one end of the spline shaft extends into the central shell and is rotatably driven by the first driving mechanism; the cleaning mechanism comprises a cleaning brush and a first spline housing fixedly connected with the cleaning brush, the first spline housing is in key connection with a spline shaft, and the first spline housing is in threaded connection with the air inlet cylinder; an air inlet channel is formed in the spline shaft in the vertical cylinder, a fixed-height air suction port communicated with the air inlet channel is radially formed in a key groove of the spline shaft, the fixed-height air suction ports correspond to the air inlets one by one, and a sealing mechanism for sealing the fixed-height air suction ports is arranged in the air inlet channel; a second spline housing is connected with an upper key of a spline shaft in the vertical cylinder, the second spline housing is in threaded connection with the vertical cylinder, and an unsealing mechanism which is used for being matched with a sealing mechanism positioned at the inner side of the second spline housing and the first spline housing to enable the sealing mechanism to open a fixed-height air suction port is arranged between the second spline housing and the first spline housing; the air suction mechanism comprises wide area air suction pipes which are in one-to-one correspondence and communicated with the air inlet cylinders and height fixing air suction pipes which are in one-to-one correspondence and communicated with the air inlet channels.
By adopting the technical scheme, the air inlet cylinder can be driven by the second driving mechanism to rotate by 90 degrees, and the angle of the vertical cylinder can be adjusted, so that the vertical cylinder is switched between a horizontal posture and a vertical posture, and the vertical cylinder always maintains the horizontal posture; the suction mechanism can generate negative pressure, so that air is conveniently sucked.
When the air quality needs to be monitored in a horizontal plane wide area, the first spline housing and the second spline housing are adjusted to be positioned at the farthest position of the air inlet cylinder from the central shell, the vertical cylinder is adjusted to be in a horizontal posture, external air enters the vertical cylinder and the vertical cylinder through the air inlet, and then enters the air monitoring mechanism through the wide area air suction pipe and the air suction mechanism, and the air monitoring mechanism monitors the air; under the wide area monitoring mode of the horizontal plane, as a plurality of air inlets are arranged, the coverage area of the air collection points on the horizontal plane is wider, the detection result is more accurate, the air detection error can be reduced, and the air collection points are particularly suitable for being used in a scene with unbalanced air quality distribution in the horizontal direction.
When the air quality is required to be monitored on a wide area of a vertical surface, the first spline housing and the second spline housing are adjusted to be positioned at the farthest position of the air inlet cylinder from the central shell, the vertical cylinder is adjusted to be in a vertical posture, external air enters the vertical cylinder and the vertical cylinder through the air inlet, and then enters the air monitoring mechanism through the wide area air suction pipe and the air suction mechanism, and the air monitoring mechanism monitors the air; under the wide area monitoring mode of the vertical surface, as the air inlets are arranged in a plurality of ways, the air inlets of the vertical cylinders are positioned at different heights, so that the coverage range of the air collection points on the vertical surface is wider, the detection result is more accurate, the air detection error can be reduced, and the air quality monitoring device is particularly suitable for being used in a scene with unbalanced air quality distribution in the vertical direction.
When the gradient monitoring is required to be carried out on the air quality of different height layers, the air suction mechanism only sucks air to one fixed-height air suction pipe, does not suck air to the wide-area air suction pipe and the other fixed-height air suction pipe, the first driving mechanism drives the spline shaft to rotate, the spline shaft drives the first spline housing and the second spline housing to rotate, external threads are arranged on the outer walls of the first spline housing and the second spline housing, internal threads in threaded connection with the external threads of the first spline housing and the second spline housing are arranged on the inner wall of the air inlet pipe, the first spline housing and the second spline housing axially move on the spline shaft under the action of the internal threads of the air inlet pipe when rotating, so that the unsealing mechanism is driven to be moved to any sealing mechanism, the sealing mechanism is enabled to open the fixed-height air suction pipe, when the sealing mechanism is enabled to open the fixed-height air suction pipe, external air mainly enters the fixed-height air suction pipe through the air inlets corresponding to the fixed-height air suction port, and then enters the fixed-height air suction pipe through the air inlet channel, the air monitoring mechanism and the air monitoring mechanism.
When the filter screen of air inlet department needs to be cleared up, first actuating mechanism drive spline shaft rotates, and the spline shaft drives first spline housing and second spline housing rotation, and under the effect of the internal screw thread of intake pipe, first spline housing and second spline housing can axial displacement on the spline shaft to drive the cleaning brush and remove, the cleaning brush elasticity is crooked to contact with an inlet tube inner wall, and when the cleaning brush removed to air inlet department, can contact with the filter screen, clean the filter screen.
Preferably, the air suction mechanism further comprises a main air suction pipe, an air suction pump, a back blowing air suction pipe, a back blowing air exhaust pipe, a main monitoring air supply pipe and a plurality of branch monitoring air supply pipes, wherein the air suction pump is arranged in the monitoring shell, the air suction end of the air suction pump is provided with the main air suction pipe, the main air suction pipe is communicated with the wide area air suction pipe, the fixed height air suction pipe, the back blowing air suction pipe and the back blowing air exhaust pipe, the other end of the back blowing air suction pipe is communicated with a back blowing air inlet on the monitoring shell, the back blowing air inlet is communicated with the outside air, the air exhaust end of the air suction pump is provided with the main air exhaust pipe, the main air exhaust pipe is communicated with the main monitoring air supply pipe and the back blowing air exhaust pipe, the main monitoring air supply pipe is communicated with the plurality of branch monitoring air supply pipes, and the branch monitoring air supply pipes are communicated with the air monitoring mechanism; the wide-area air suction valve is arranged on the wide-area air suction pipe, the fixed-height air suction valve is arranged on the fixed-height air suction pipe, the main air suction valve is arranged on the main air suction pipe and between the back-blowing air suction pipe and the back-blowing air discharge pipe, the back-blowing air suction valve is arranged on the back-blowing air suction pipe, the back-blowing air discharge valve is arranged on the back-blowing air discharge pipe, and the main air discharge valve is arranged on the main air discharge pipe.
By adopting the technical scheme, when the air quality is monitored in a horizontal plane or a vertical plane in a wide area, the wide area air suction valve, the main air suction valve and the main air discharge valve are opened, the air suction pump sucks air into the main air suction pipe and the wide area air suction pipe, external air enters the air inlet cylinder and the wide area air suction pipe through the air inlets, and the air suction pump conveys the sucked air into the main air discharge pipe, the main monitoring air supply pipe, the branch monitoring air supply pipe and the air monitoring mechanism.
When the gradient monitoring is carried out on the air quality of a plurality of layers with different heights, such as the gradient monitoring is carried out on the air above the central shell, the corresponding fixed-height air suction valve, the main air suction valve and the main air discharge valve are controlled to be opened, the air suction pump sucks air to the main air suction pipe, the fixed-height air suction pipe and the air inlet channel, the external air enters the fixed-height air suction pipe and the air inlet channel through the air inlet, and the air suction pump conveys the sucked air to the main air discharge pipe, the main monitoring air supply pipe, the branch monitoring air supply pipe and the air monitoring mechanism.
When the cleaning brush rotates to clean the filter screen, the back-blowing air suction valve, the back-blowing air exhaust valve and the wide area air suction valve are opened, the air suction pump sucks external air into the lower part of the main air suction pipe and the back-blowing air suction pipe, and the air suction pump conveys sucked air to the main air exhaust pipe, the back-blowing air exhaust pipe, the upper part of the main air suction pipe, the wide area air suction pipe and the air inlet pipe, so that the filter screen is cleaned by matching the air blowing and the cleaning brush, and the cleaning effect can be improved.
Preferably, the air monitoring mechanism comprises a detection shell, a plurality of detection chambers are arranged in the detection shell, detection sensors are arranged in the detection chambers, the detection chambers are in one-to-one correspondence with the branch monitoring air supply pipes, and the detection chambers are communicated with the corresponding branch monitoring air supply pipes.
Through adopting above-mentioned technical scheme, main monitoring air supply pipe is through a plurality of branch monitoring air supply pipe to each detection room independent transport air, and the indoor air detector of detection is mutually independent, detects air alone, avoids the mutual interference, can improve detection accuracy.
Preferably, the detection sensor is a PM2.5 sensor, a PM10 sensor, a CO sensor, an SO2 sensor, an NO2 sensor, an O3 sensor, a TVOC sensor, a temperature sensor, or a humidity sensor; and the top of the monitoring shell is provided with a wind speed sensor and a wind direction sensor.
Through adopting above-mentioned technical scheme, the indoor detection sensor of each detection is mutually different, can set up PM2.5 sensor, PM10 sensor, CO sensor, SO2 sensor, NO2 sensor, O3 sensor, TVOC sensor, temperature sensor or humidity transducer respectively to realize the detection to PM2.5, PM10, CO, SO2, NO2, O3, TVOC, temperature, humidity, wind speed and wind direction.
Preferably, the first driving mechanism comprises a first protective shell, a first driving motor, a driving bevel gear and a driven bevel gear, wherein the first protective shell is fixedly arranged on the central shell, the first driving motor is arranged in the first protective shell, the output end of the first driving motor extends into the central shell and is provided with the driving bevel gear, one end of the spline shaft is provided with the driven bevel gear, and the driving bevel gear is meshed with the driven bevel gear.
By adopting the technical scheme, the first driving motor drives the four driven bevel gears and the spline shaft to rotate through the driving bevel gear; can play the guard action to first driving motor in setting up first protecting crust, avoid first driving motor to receive the rainwater erosion.
Preferably, the second driving mechanism comprises a second protective shell, a second driving motor, a driving cylindrical gear and a driven cylindrical gear, wherein the second protective shell is fixedly arranged on the support, the second driving motor is arranged in the second protective shell, the driving cylindrical gear is arranged at the output end of the second driving motor, the driven cylindrical gear is arranged on one of the vertical cylinders, and the driving cylindrical gear is meshed with the driven cylindrical gear.
By adopting the technical scheme, the second driving motor drives the driven cylindrical gear and the vertical cylinder to rotate through the driving cylindrical gear; the second driving motor can be protected in the second protecting shell, so that the second driving motor is prevented from being corroded by rainwater.
Preferably, the sealing mechanism comprises a first magnet, an elastic telescopic rod and a sealing plug, wherein the elastic telescopic rod is fixedly arranged in the air inlet channel, the first magnet and the sealing plug are fixedly arranged at the telescopic end of the elastic telescopic rod, the sealing plug is positioned in the air inlet channel and is in sealing connection with the fixed-height air suction port, and the first magnet is positioned at the inner side of the fixed-height air suction port; the unsealing mechanism comprises a mounting seat and a second magnet, the mounting seat is fixedly arranged between the first spline housing and the second spline housing, the second magnet is arranged at one end, facing the spline shaft, of the mounting seat, and the second magnet is magnetically and repulsed to be matched with the first magnet when moving to the fixed-height air suction port, so that the sealing plug can open the fixed-height air suction port.
By adopting the technical scheme, the pressure spring can provide elasticity for the movable rod, so that the sealing plug is pushed to seal the fixed-height air suction port; when the sealing mechanism moves to the fixed-height air suction port, the second magnet moves to the first magnet, the magnetic poles of the opposite end faces of the second magnet and the first magnet are the same, the magnetic force of the second magnet is larger than that of the first magnet, the first magnet moves away from the second magnet and towards the inner side of the air inlet channel through the repulsive force of the second magnet and the first magnet, the pressure spring is compressed, the movable rod drives the sealing plug to move, and the sealing plug is away from and opens the fixed-height air suction port.
Preferably, the air inlets are arranged at equal intervals along the axis direction of the air inlet cylinder, and the area of the air inlets on the air inlet cylinder from one end close to the center shell to one end far away from the center shell sequentially increases.
By adopting the technical scheme, the air inflow of each air inlet is approximately the same; because the connecting end of the wide-area air suction pipe and the air inlet pipe is close to the central shell, the negative pressure at the air inlet far from the central shell is lower, the air inlet rate is lower, the areas of the air inlets arranged on the air inlet pipe from one end close to the central shell to the direction far from the central shell are sequentially increased, the defect of low air inlet rate can be overcome by increasing the air inlet area of the air inlet far from the central shell, and the air inlet amount of each air inlet is approximately the same.
Preferably, two independent air inlet cavities are arranged in the central shell, the air inlet cavities are in one-to-one correspondence with the air inlet channels, the spline shaft is radially provided with radial ports, the air inlet channels are communicated with the air inlet cavities corresponding to the radial ports, and the height-fixing air suction pipe is communicated with the air inlet channels corresponding to the air inlet cavities through the air inlet cavities.
By adopting the technical scheme, the fixed-height air suction pipe is communicated with the corresponding air inlet channel, so that air quality monitoring at different heights is realized.
Preferably, water baffles are arranged on the air inlet cylinder and positioned on two sides of the air inlet.
By adopting the technical scheme, water can be blocked by the water blocking plate during rainfall. When the air quality is monitored in a horizontal plane wide area, the air inlets of all air inlet cylinders are positioned at the bottoms of the air inlets, and the water baffle plate prevents rainwater from entering the air inlet cylinders. Therefore, in rainy and snowy days, the vertical cylinder needs to be in a horizontal posture, so that the rainy and snowy days are prevented from entering the air inlet cylinder; in non-rainy and snowy weather, wide-area monitoring of the vertical surface can be performed.
Compared with the prior art, the technical scheme has at least one of the following beneficial effects:
through setting up two vertical barrels and two vertical barrels, through driving vertical barrel and vertical barrel rotation 90 degrees, can switch under the horizontal plane wide area monitoring of air quality and the mode of vertical plane wide area monitoring, the air inlet of vertical barrel and vertical barrel sets up a plurality ofly, and air acquisition point coverage is wider, and the testing result is more accurate, reducible air detection error;
The spline shaft is driven to rotate by the first driving mechanism, the spline shaft drives the first spline housing, the second spline housing and the unsealing mechanism to axially move in the vertical cylinder, the unsealing mechanism can move to any sealing mechanism, and then fixed-height air inlets at different heights are opened, so that gradient monitoring is conveniently carried out on air quality of layers at different heights, air quality data of the same monitoring point in the vertical direction is obtained, and diversified air monitoring requirements are met;
through first actuating mechanism drive spline shaft rotation, the spline shaft drives first spline housing, second spline housing can also rotate in the section of thick bamboo axial displacement that admits air, and then drives the rotatory limit axial displacement of cleaning brush for the cleaning brush can remove through each air inlet, cleans the filter screen, avoids the air inlet to block up, guarantees that air monitoring normally goes on.
Drawings
FIG. 1 is a schematic diagram of a horizontal plane wide area monitoring mode according to an embodiment of the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 2;
FIG. 4 is a cross-sectional view taken along line C-C of FIG. 2;
FIG. 5 is another state diagram (vertical plane wide area monitoring mode) of an embodiment of the present invention;
FIG. 6 is an enlarged view of a portion of FIG. 1A;
FIG. 7 is an enlarged view of part of D of FIG. 3;
FIG. 8 is a cross-sectional view taken along line F-F in FIG. 6;
FIG. 9 is a cross-sectional view taken along line E-E of FIG. 7;
FIG. 10 is a partial schematic view of a vertical shaft;
in the figure, 1, a monitoring shell; 2. an air suction mechanism; 201. a wide area suction pipe; 202. a fixed height air suction pipe; 203. a main suction pipe; 204. a getter pump; 205. blowback suction pipe; 206. back-blowing the exhaust pipe; 207. a main exhaust pipe; 208. a main monitoring air supply pipe; 209. a branch monitoring air supply pipe; 210. a wide area suction valve; 211. a fixed-height air suction valve; 212. a main suction valve; 213. a back-blowing suction valve; 214. a back-blowing exhaust valve; 215. a main exhaust valve; 3. an air monitoring mechanism; 31. a detection housing; 32. a detection chamber; 33. a detection sensor; 34. a wind speed sensor; 35. a wind direction sensor; 4. an air inlet mechanism; 41. a bracket; 42. an air inlet cylinder; 42a, transverse barrels; 42b, a vertical cylinder; 421. an air inlet; 422. a filter screen; 423. a water baffle; 43. a center housing; 431. an air inlet cavity; 44. a spline shaft; 441. an air intake passage; 442. a fixed-height air suction port; 443. a radial port; 45. a first driving mechanism; 451. a first protective shell; 452. a first driving motor; 453. a drive bevel gear; 454. a driven bevel gear; 46. a second driving mechanism; 461. a second protective shell; 462. a second driving motor; 463. a driving cylindrical gear; 464. a driven cylindrical gear; 47. a cleaning mechanism; 471. a cleaning brush; 472. a first spline housing; 473. a second spline housing; 48. a sealing mechanism; 481. a first magnet; 482. an elastic telescopic rod; 483. a sealing plug; 49. an unsealing mechanism; 491. and (2) a mounting seat: 492. and a second magnet.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.
Referring to fig. 1 to 10, an embodiment of the present application provides an air quality miniature monitoring station, including a monitoring housing 1, an air intake mechanism 4 is installed at the top of the monitoring housing 1, the air intake mechanism 2 is communicated with the air intake mechanism 4 and the air monitoring mechanism 3, the air intake mechanism 4 includes a bracket 41, an air intake cylinder 42, a central housing 43, a spline shaft 44, a first driving mechanism 45, a second driving mechanism 46 and a cleaning mechanism 47, the bracket 41 is fixedly connected with the top of the monitoring housing 1, four air intake cylinders 42 distributed circumferentially are installed on the central housing 43, wherein two air intake cylinders 42 arranged oppositely are transverse cylinders 42a and are horizontally rotatably installed on the bracket 41, the other two air intake cylinders 42 arranged oppositely are vertical cylinders 42b and can be driven by the second driving mechanism 46 to rotate on a vertical reference plane, a plurality of air inlets 421 are arranged on the air intake cylinders 42 along the axial direction, a filter screen 422 is installed in the air inlets 421, the filter screen 422 cannot filter particulate matters below the PM10, the air intake cylinders 42 are prevented from affecting the monitoring of the PM10, and the air intake cylinders 42 are rotatably installed in the air intake cylinders 42 through the spline shaft 44 and extend to one end of the first driving mechanism 44 through the spline shaft 44; the cleaning mechanism 47 comprises a cleaning brush 471 and a first spline housing 472 fixedly connected with the cleaning brush 471, the first spline housing 472 is in key connection with the spline shaft 44, and the first spline housing 472 is in threaded connection with the air inlet cylinder 42; an air inlet channel 441 is arranged in the spline shaft 44 in the vertical cylinder 42b, a fixed-height air suction port 442 communicated with the air inlet channel 441 is radially arranged on a key groove of the spline shaft 44, the fixed-height air suction ports 442 are in one-to-one correspondence with the air inlets 421, and a sealing mechanism 48 for sealing the fixed-height air suction ports 442 is arranged in the air inlet channel 441; a second spline sleeve 473 is connected on the spline shaft 44 in the vertical cylinder 42b in a key way, the second spline sleeve 473 is in threaded connection with the vertical cylinder 42b, and an unsealing mechanism 49 for being matched with the sealing mechanism 48 positioned at the inner side of the second spline sleeve 473 and the first spline sleeve 472 to enable the sealing mechanism 48 to open the height-fixed air suction port 442 is arranged between the second spline sleeve 473 and the first spline sleeve 472; the intake mechanism 2 includes wide area intake pipes 201 that are in one-to-one correspondence with and communicate with the respective intake cylinders 42, and height-fixing intake pipes 202 that are in one-to-one correspondence with and communicate with the respective intake passages 441.
The air inlet cylinder 42 is a generic concept of the transverse cylinder 42a and the vertical cylinder 42b, and the description of the air inlet cylinder 42 is a unified description of the transverse cylinder 42a and the vertical cylinder 42b, so that the described features are more concise and clear.
The second driving mechanism 46 drives the air inlet cylinder 42 to rotate 90 degrees, so that the angle of the vertical cylinder 42b can be adjusted, the vertical cylinder 42b is switched between a horizontal posture and a vertical posture, and the horizontal cylinder 42a always maintains the horizontal posture; the suction mechanism 2 can generate negative pressure so as to suck air conveniently. The wide area suction pipe 201 and the fixed height suction pipe 202 are flexible hoses and can be kept in communication with the air inlet cylinder 42 when the air inlet cylinder 42 rotates.
When the air quality needs to be monitored in a horizontal plane wide area, the first spline housing 472 and the second spline housing 473 are adjusted to be positioned at the farthest position of the air inlet cylinder 42 from the center shell 43, the vertical cylinder 42b is adjusted to be in a horizontal posture, external air enters the vertical cylinder 42b and the horizontal cylinder 42a through the air inlet 421 and then enters the air monitoring mechanism 3 through the wide area air suction pipe 201 and the air suction mechanism 2, and the air monitoring mechanism 3 monitors the air; in the horizontal plane wide area monitoring mode, as the air inlets 421 are arranged in a plurality of ways, the coverage area of the air collection points on the horizontal plane is wider, the detection result is more accurate, the air detection error can be reduced, and the air collection points are particularly suitable for being used in a scene with unbalanced air quality distribution in the horizontal direction.
When the air quality needs to be monitored on a wide area of a vertical surface, the first spline housing 472 and the second spline housing 473 are adjusted to be positioned at the farthest position of the air inlet cylinder 42 from the central shell 43, the vertical cylinder 42b is adjusted to be in a vertical posture, external air enters the vertical cylinder 42b and the transverse cylinder 42a through the air inlet 421 and then enters the air monitoring mechanism 3 through the wide area air suction pipe 201 and the air suction mechanism 2, and the air monitoring mechanism 3 monitors the air; in the vertical plane wide area monitoring mode, as the air inlets 421 are arranged in a plurality of ways, the air inlets 421 of the vertical cylinders 42b are positioned at different heights, so that the coverage range of the air collection points on the vertical plane is wider, the detection result is more accurate, the air detection error can be reduced, and the air detection device is particularly suitable for being used in a scene with unbalanced air quality distribution in the vertical direction.
When the air quality of different height layers is required to be monitored in a gradient mode, the air suction mechanism 2 only sucks air to one fixed-height air suction pipe 202, does not suck air to the wide-area air suction pipe 201 and the other fixed-height air suction pipe 202, the first driving mechanism 45 drives the spline shaft 44 to rotate, the spline shaft 44 drives the first spline sleeve 472 and the second spline sleeve 473 to rotate, external threads are arranged on the outer walls of the first spline sleeve 472 and the second spline sleeve 473, internal threads which are in threaded connection with the external threads of the first spline sleeve 472 and the second spline sleeve 473 are arranged on the inner wall of the air inlet pipe, the first spline sleeve 472 and the second spline sleeve 473 axially move on the spline shaft 44 under the action of the internal threads of the air inlet pipe when the first spline sleeve 472 and the second spline sleeve 473 rotate, so that the unsealing mechanism 49 is driven to move to any sealing mechanism 48, when the sealing mechanism 48 opens the fixed-height air suction port 442, the first spline sleeve 472 and the second spline sleeve 473 are positioned on the two sides of the center of the fixed-height air suction port 442, external air mainly enters the fixed-height air suction port 442 through the air inlet 421, and then enters the fixed-height air suction port 202 through the air channel 441, and enters the fixed-height air suction pipe 2 and 3, and monitors the air height of the fixed air suction mechanism 3; although some air enters the fixed-height air inlet 442 through the gaps between the first spline housing 472 and the vertical cylinders 42b and the spline shaft 44 and the gaps between the second spline housing 473 and the vertical cylinders 42b and the spline shaft 44, the air intake amount of the gaps is far smaller than the air intake amount of the corresponding air inlet 421 entering the fixed-height air inlet 442, so that the error of fixed-height monitoring is small.
When the filter screen 422 at the air inlet 421 is required to be cleaned, the first driving mechanism 45 drives the spline shaft 44 to rotate, the spline shaft 44 drives the first spline sleeve 472 and the second spline sleeve 473 to rotate, the first spline sleeve 472 and the second spline sleeve 473 can axially move on the spline shaft 44 under the action of the internal thread of the air inlet pipe, so as to drive the cleaning brush 471 to move, the cleaning brush 471 is elastically bent to be in contact with the inner wall of the air inlet cylinder 42, and the cleaning brush 471 can be in contact with the filter screen 422 to clean the filter screen 422 when moving to the air inlet 421.
In a preferred embodiment, the air suction mechanism 2 further comprises a main air suction pipe 203, an air suction pump 204, a back blowing air suction pipe 205, a back blowing air discharge pipe 206, a main air discharge pipe 207, a main monitoring air supply pipe 208 and a plurality of branch monitoring air supply pipes 209, wherein the air suction pump 204 is arranged in the monitoring shell 1, the main air suction pipe 203 is arranged at the air suction end of the air suction pump 204, the main air suction pipe 203 is communicated with a wide area air suction pipe 201, a fixed height air suction pipe 202, the back blowing air suction pipe 205 and the back blowing air discharge pipe 206, the other end of the back blowing air suction pipe 205 is communicated with a back blowing air inlet on the monitoring shell 1, the back blowing air inlet is communicated with the outside air, the main air discharge pipe 207 is arranged at the air discharge end of the air suction pump 204, the main air discharge pipe 207 is communicated with the main monitoring air supply pipes 208 and the back blowing air discharge pipes 206, the main monitoring air supply pipes 208 are communicated with the plurality of branch monitoring air supply pipes 209, and the branch monitoring air supply pipes 209 are communicated with the air monitoring mechanism 3; a wide area air suction valve 210 is installed on the wide area air suction pipe 201, a fixed height air suction valve 211 is installed on the fixed height air suction pipe 202, a main air suction valve 212 is installed on the main air suction pipe 203 and positioned between the back blowing air suction pipe 205 and the back blowing air discharge pipe 206, a back blowing air suction valve 213 is installed on the back blowing air suction pipe 205, a back blowing air discharge valve 214 is installed on the back blowing air discharge pipe 206, and a main air discharge valve 215 is installed on the main air discharge pipe 207. The wide area air suction valve 210, the fixed height air suction valve 211, the main air suction valve 212, the back blowing air suction valve 213, the back blowing air exhaust valve 214 and the main air exhaust valve 215 are all electromagnetic valves, are connected with a controller with wireless receiving and transmitting functions in the monitoring shell 1, can remotely control corresponding program starting, and open corresponding valves.
When the air quality is monitored in a wide area in a horizontal plane or a vertical plane, the wide area intake valve 210, the main intake valve 212 and the main exhaust valve 215 are opened, the intake pump 204 sucks air into the main intake pipe 203 and the wide area intake pipe 201, external air enters the intake pipe 42 and the wide area intake pipe 201 through the respective intake ports 421, and the intake pump 204 delivers the sucked air to the main exhaust pipe 207, the main monitoring air supply pipe 208, the branch monitoring air supply pipe 209 and the air monitoring mechanism 3.
When the gradient monitoring is performed on the air quality of a plurality of layers with different heights, for example, the gradient monitoring is performed on the air above the center housing 43, the corresponding fixed-height air suction valve 211, the main air suction valve 212 and the main air discharge valve 215 are controlled to be opened, the air suction pump 204 sucks air into the main air suction pipe 203, the fixed-height air suction pipe 202 and the air inlet channel 441, the external air enters the fixed-height air suction port 442 and the air inlet channel 441 through the air inlet 421, and the air suction pump 204 conveys the sucked air into the main air discharge pipe 207, the main monitoring air supply pipe 208, the branch monitoring air supply pipe 209 and the air monitoring mechanism 3.
When the cleaning brush 471 rotates to clean the filter screen 422, the blowback suction valve 213, the blowback exhaust valve 214 and the wide area suction valve 210 are opened, the suction pump 204 sucks external air into the lower part of the main suction pipe 203 and the blowback suction pipe 205, and the suction pump 204 conveys the sucked air to the main exhaust pipe 207, the blowback exhaust pipe 206, the upper part of the main suction pipe 203, the wide area suction pipe 201 and the air inlet cylinder 42, so that the filter screen 422 is cleaned by cooperation of the air blowing and the cleaning brush 471, and the cleaning effect can be improved.
In a preferred embodiment, the air monitoring mechanism 3 includes a detection housing 31, a plurality of detection chambers 32 are provided in the detection housing 31, detection sensors 33 are installed in the detection chambers 32, the detection chambers 32 are in one-to-one correspondence with the branch monitoring air supply pipes 209, and the detection chambers 32 are communicated with the branch monitoring air supply pipes 209 corresponding thereto.
By adopting the above technical scheme, the main monitoring air supply pipe 208 independently supplies air to each detection chamber 32 through the plurality of branch monitoring air supply pipes 209, and the air detectors in the detection chambers 32 are mutually independent and independently detect the air, so that mutual interference is avoided, and the detection precision can be improved; after the air in the detection chamber 32 is detected, the air enters the monitoring housing 1 and is discharged through the heat dissipation holes of the monitoring housing 1.
In a preferred embodiment, the detection sensor 33 is a PM2.5 sensor, a PM10 sensor, a CO sensor, an SO2 sensor, a NO2 sensor, an O3 sensor, a TVOC sensor, a temperature sensor, or a humidity sensor; a wind speed sensor 34 and a wind direction sensor 35 are installed on the top of the monitoring shell 1.
The detection sensors 33 provided in the detection chambers 32 are different from each other, and may be provided with a PM2.5 sensor, a PM10 sensor, a CO sensor, an SO2 sensor, a NO2 sensor, an O3 sensor, a TVOC sensor, a temperature sensor, or a humidity sensor, respectively, SO as to detect PM2.5, PM10, CO, SO2, NO2, O3, TVOC, temperature, humidity, wind speed, and wind direction.
In a preferred embodiment, the first driving mechanism 45 includes a first protection case 451, a first driving motor 452, a driving bevel gear 453, and a driven bevel gear 454, the first protection case 451 is fixedly installed on the center housing 43, the first driving motor 452 is installed in the first protection case 451, an output end of the first driving motor 452 extends into the center housing 43 and is installed with the driving bevel gear 453, one end of the spline shaft 44 is installed with the driven bevel gear 454, and the driving bevel gear 453 is engaged with the driven bevel gear 454.
The first driving motor 452 drives the four driven bevel gears 454 and the spline shaft 44 to rotate through the driving bevel gear 453; the first protective shell 451 is arranged to protect the first driving motor 452, so that the first driving motor 452 is prevented from being corroded by rainwater. The first driving motor 452 is a stepping motor, and can output a preset angular displacement, so as to drive the unsealing mechanism 49 to move to any sealing mechanism 48. A proximity switch may be installed at one end of the vertical cylinder 42b far from the center housing 43 to detect the position of the second spline housing 473, so as to avoid step motor step out.
In a preferred embodiment, the second driving mechanism 46 includes a second protective housing 461, a second driving motor 462, a driving cylindrical gear 463, and a driven cylindrical gear 464, the second protective housing 461 is fixedly mounted on the support 41, the second driving motor 462 is mounted in the second protective housing 461, the driving cylindrical gear 463 is mounted at an output end of the second driving motor 462, the driven cylindrical gear 464 is mounted on one of the transverse cylinders 42a, and the driving cylindrical gear 463 is in meshed connection with the driven cylindrical gear 464.
The second driving motor 462 drives the driven cylindrical gear 464 and the transverse cylinder 42a to rotate through the driving cylindrical gear 463; the second protective shell 461 is arranged to protect the second driving motor 462, so that the second driving motor 462 is prevented from being corroded by rainwater. The second driving motor 462 is a stepping motor with a worm gear reducer, and can drive the transverse cylinder 42a to rotate by a preset angle and maintain the preset angle.
In a preferred embodiment, the sealing mechanism 48 comprises a first magnet 481, an elastic telescopic rod 482 and a sealing plug 483, wherein the elastic telescopic rod 482 is fixedly installed in the air inlet channel 441, the first magnet 481 and the sealing plug 483 are fixedly installed on the telescopic end of the elastic telescopic rod 482, the sealing plug 483 is positioned in the air inlet channel 441 and is in sealing connection with the fixed-height air suction port 442, and the first magnet 481 is positioned inside the fixed-height air suction port 442; the unsealing mechanism 49 includes a mount 491 and a second magnet 492, the mount 491 is fixedly mounted between the first spline housing 472 and the second spline housing 473, the second magnet 492 is mounted on one end of the mount 491 facing the spline shaft 44, and the second magnet 492 magnetically and repulsion cooperates with the first magnet 481 when moving to the fixed-height air suction port 442, so that the sealing plug 483 opens the fixed-height air suction port 442.
The elastic telescopic rod 482 is a spring telescopic rod in the prior art, and comprises a fixed cylinder, a movable rod and a pressure spring, wherein the fixed cylinder is fixedly arranged in the air inlet channel 441, one end of the movable rod is slidably arranged in the fixed cylinder and is connected with the pressure spring, the other end of the pressure spring is fixedly connected with the fixed cylinder, the sealing plug 483 is fixedly sleeved on the movable rod, and the first magnet 481 is fixedly arranged at one end of the movable rod far away from the pressure spring; the elastic force can be provided for the movable rod by arranging the pressure spring, so that the sealing plug 483 is pushed to seal the fixed-height air suction port 442; when the sealing mechanism 48 moves to the fixed-height air inlet 442, the second magnet 492 moves to the first magnet 481, the magnetic poles of the second magnet 492 and the opposite end face of the first magnet 481 are the same, the magnetic force of the second magnet 492 is larger than that of the first magnet 481, the first magnet 481 moves away from the second magnet 492 and towards the inner side of the air inlet 441 through the repulsive force of the magnetic poles, the compression spring is compressed, the movable rod drives the sealing plug 483 to move, and the sealing plug 483 moves away from and opens the fixed-height air inlet 442. The number of the elastic telescopic rods 482 is two, and the first magnet 481 and the sealing plug 483 are connected with the telescopic ends of the two elastic telescopic rods 482.
In a preferred embodiment, the air inlets 421 are arranged at equal intervals along the axial direction of the air inlet cylinder 42, and the area of the air inlet 421 on the air inlet cylinder 42 increases in sequence from the end near the center housing 43 to the end far from the center housing 43.
This makes it possible to make the intake air amount of each intake port 421 substantially the same; since the connection end of the wide area air intake pipe 201 and the air intake tube 42 is close to the center housing 43, the negative pressure at the air intake 421 farther from the center housing 43 is lower, the air intake rate is lower, the area of the air intake 421 provided on the air intake tube 42 from the end close to the center housing 43 to the end far from the center housing 43 is sequentially increased, and the disadvantage of low air intake rate can be made up by increasing the air intake area of the air intake 421 farther from the center housing 43, so that the air intake amount of each air intake 421 is approximately the same. And the smallest air inlet 421 has a larger area than the fixed-height air inlet 442, so that the fixed-height air inlet 442 can be conveniently used for air intake.
In a preferred embodiment, two partition boards are fixed in the central housing 43, the central housing 43 is divided into three chambers which are sequentially arranged by the two partition boards, wherein two non-adjacent chambers are mutually independent air inlet chambers 431, the air inlet chambers 431 are in one-to-one correspondence with the air inlet channels 441, the spline shaft 44 is in rotary sealing connection with the partition boards through a rotary sealing ring, the spline shaft 44 is radially provided with radial ports 443, the air inlet channels 441 are communicated with the air inlet chambers 431 corresponding to the radial ports 443, and the fixed-height air suction pipes 202 are communicated with the air inlet channels 441 corresponding to the air inlet chambers 431.
In this way, the fixed-height air suction pipe 202 and the corresponding air inlet channel 441 can be communicated, so that air quality monitoring at different heights can be realized.
In a preferred embodiment, water baffles 423 are provided on the air intake cylinder 42 on either side of the air intake 421.
The number of the water baffles 423 is two, and the water baffles 423 are fixed on the air inlet cylinder 42 along the length direction of the air inlet cylinder 42. In rainy and snowy weather, the water baffle 423 can be used for shielding the rain and the snow. When the air quality is monitored in a wide area in the horizontal plane, the air inlets 421 of the air inlet cylinders 42 are all positioned at the bottoms of the air inlets 421, and the water baffles 423 prevent rain and snow from entering the air inlet cylinders 42. Therefore, in rainy and snowy weather, the vertical cylinder 42b needs to be in a horizontal posture to avoid rainy and snowy entering the air inlet cylinder 42; in non-rainy and snowy weather, wide-area monitoring of the vertical surface can be performed.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Claims (10)
1. The utility model provides an air quality miniature monitoring station, includes monitoring casing (1), be equipped with air suction mechanism (2) and air monitoring mechanism (3) in monitoring casing (1), air inlet mechanism (4) are installed at monitoring casing (1) top, air suction mechanism (2) and air inlet mechanism (4), air monitoring mechanism (3) intercommunication, a serial communication port, air inlet mechanism (4) include support (41), air inlet section of thick bamboo (42), center casing (43), spline shaft (44), first actuating mechanism (45), second actuating mechanism (46) and clean mechanism (47), support (41) and monitoring casing (1) top fixed connection install four air inlet section of thick bamboo (42) that are circumference distribution on center casing (43), wherein two air inlet section of thick bamboo (42) that set up relatively are horizontal section of thick bamboo (42 a) and horizontal rotation install on support (41), and two other air inlet section of thick bamboo (42) that set up relatively are vertical section of thick bamboo (42 b) and can be driven by second actuating mechanism (46) and rotate, are equipped with a plurality of air inlet (421) along its axis direction on air inlet section of thick bamboo (42), air inlet (422) are installed in filter screen (42) air inlet (422) and are all spline (42) are installed, one end of the spline shaft (44) extends into the center shell (43) and is driven to rotate by the first driving mechanism (45); the cleaning mechanism (47) comprises a cleaning brush (471) and a first spline housing (472) fixedly connected with the cleaning brush (471), the first spline housing (472) is in key connection with the spline shaft (44), and the first spline housing (472) is in threaded connection with the air inlet cylinder (42); an air inlet channel (441) is arranged in the spline shaft (44) in the vertical cylinder (42 b), fixed-height air inlets (442) communicated with the air inlet channel (441) are radially arranged on key grooves of the spline shaft (44), the fixed-height air inlets (442) correspond to the air inlets (421) one by one, and a sealing mechanism (48) for sealing the fixed-height air inlets (442) is arranged in the air inlet channel (441); a second spline sleeve (473) is connected to the spline shaft (44) in the vertical cylinder (42 b) in a key way, the second spline sleeve (473) is connected with the vertical cylinder (42 b) in a threaded way, and an unsealing mechanism (49) for being matched with a sealing mechanism (48) positioned on the inner side of the second spline sleeve (473) and the first spline sleeve (472) to enable the sealing mechanism (48) to open a fixed-height air suction port (442) is arranged between the second spline sleeve (473) and the first spline sleeve; the air suction mechanism (2) comprises wide area air suction pipes (201) which are in one-to-one correspondence and communicated with the air inlet cylinders (42) and height fixing air suction pipes (202) which are in one-to-one correspondence and communicated with the air inlet channels (441).
2. The miniature air quality monitoring station according to claim 1, wherein the air suction mechanism (2) further comprises a main air suction pipe (203), an air suction pump (204), a back-blowing air suction pipe (205), a back-blowing air discharge pipe (206), a main air discharge pipe (207), a main monitoring air supply pipe (208) and a plurality of branch monitoring air supply pipes (209), the air suction pump (204) is arranged in the monitoring shell (1), the main air suction pipe (203) is arranged at the air suction end of the air suction pump (204), the main air suction pipe (203) is communicated with the wide area air suction pipe (201), the height-fixed air suction pipe (202), the back-blowing air suction pipe (205) and the back-blowing air discharge pipe (206), the main air discharge pipe (207) is communicated with the main monitoring air supply pipes (208) and the back-blowing air discharge pipe (206), the main monitoring air supply pipes (208) are communicated with the plurality of branch monitoring air supply pipes (209), and the branch monitoring air supply pipes (209) are communicated with the air monitoring mechanism (3). The wide-area air suction pipe (201) is provided with a wide-area air suction valve (210), the fixed-height air suction pipe (202) is provided with a fixed-height air suction valve (211), the main air suction pipe (203) is provided with a main air suction valve (212) which is positioned between the back-blowing air suction pipe (205) and the back-blowing air discharge pipe (206), the back-blowing air suction pipe (205) is provided with a back-blowing air suction valve (213), the back-blowing air discharge pipe (206) is provided with a back-blowing air discharge valve (214), and the main air discharge pipe (207) is provided with a main air discharge valve (215).
3. The miniature air quality monitoring station according to claim 2, wherein the air monitoring mechanism (3) comprises a detection shell (31), a plurality of detection chambers (32) are arranged in the detection shell (31), detection sensors (33) are arranged in the detection chambers (32), the detection chambers (32) are in one-to-one correspondence with the branch monitoring air supply pipes (209), and the detection chambers (32) are communicated with the corresponding branch monitoring air supply pipes (209).
4. An air quality micro monitoring station according to claim 3, characterized in that the detection sensor (33) is a PM2.5 sensor, a PM10 sensor, a CO sensor, a SO2 sensor, a NO2 sensor, an O3 sensor, a TVOC sensor, a temperature sensor or a humidity sensor; a wind speed sensor (34) and a wind direction sensor (35) are arranged at the top of the monitoring shell (1).
5. The air quality miniature monitoring station according to claim 1, wherein the first driving mechanism (45) comprises a first protective shell (451), a first driving motor (452), a driving bevel gear (453) and a driven bevel gear (454), the first protective shell (451) is fixedly installed on the center housing (43), the first driving motor (452) is installed in the first protective shell (451), the output end of the first driving motor (452) extends into the center housing (43) and is provided with the driving bevel gear (453), one end of the spline shaft (44) is provided with the driven bevel gear (454), and the driving bevel gear (453) is in meshed connection with the driven bevel gear (454).
6. The air quality miniature monitoring station according to claim 1, wherein the second driving mechanism (46) comprises a second protective shell (461), a second driving motor (462), a driving cylindrical gear (463) and a driven cylindrical gear (464), the second protective shell (461) is fixedly installed on the support (41), the second driving motor (462) is installed in the second protective shell (461), the driving cylindrical gear (463) is installed at the output end of the second driving motor (462), the driven cylindrical gear (464) is installed on one of the transverse cylinders (42 a), and the driving cylindrical gear (463) is in meshed connection with the driven cylindrical gear (464).
7. The miniature air quality monitoring station according to claim 1, wherein the sealing mechanism (48) comprises a first magnet (481), an elastic telescopic rod (482) and a sealing plug (483), the elastic telescopic rod (482) is fixedly arranged in the air inlet channel (441), the first magnet (481) and the sealing plug (483) are fixedly arranged on the telescopic end of the elastic telescopic rod (482), the sealing plug (483) is positioned in the air inlet channel (441) and is in sealing connection with the fixed-height air suction port (442), and the first magnet (481) is positioned inside the fixed-height air suction port (442); the unsealing mechanism (49) comprises a mounting seat (491) and a second magnet (492), wherein the mounting seat (491) is fixedly arranged between the first spline housing (472) and the second spline housing (473), the second magnet (492) is arranged at one end, facing the spline shaft (44), of the mounting seat (491), and the second magnet (492) is magnetically matched with the first magnet (481) in a repulsive manner when moving to the fixed-height air suction port (442), so that the sealing plug (483) opens the fixed-height air suction port (442).
8. The miniature air quality monitoring station according to claim 1, wherein the air inlets (421) are arranged at equal intervals along the axial direction of the air inlet cylinder (42), and the area of the air inlets (421) on the air inlet cylinder (42) sequentially increases from one end close to the center housing (43) to one end far from the center housing (43).
9. The air quality miniature monitoring station according to claim 1, wherein two mutually independent air inlet cavities (431) are arranged in the center shell (43), the air inlet cavities (431) are in one-to-one correspondence with the air inlet channels (441), the spline shaft (44) is radially provided with radial ports (443), the air inlet channels (441) are communicated with the air inlet cavities (431) corresponding to the radial ports (443), and the height-fixing air suction pipe (202) is communicated with the air inlet channels (441) corresponding to the air inlet cavities (431).
10. The air quality miniature monitoring station according to claim 1, wherein water baffles (423) are arranged on the air inlet cylinder (42) and positioned on two sides of the air inlet (421).
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| CN115980276A (en) * | 2022-12-31 | 2023-04-18 | 安徽环境智能科技有限公司 | Environmental monitoring is with synthesizing air monitering equipment based on thing networking |
| CN116165110A (en) * | 2023-02-28 | 2023-05-26 | 中国矿业大学 | Wide-range dust monitor with optical chamber cleaning function and monitoring method |
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