Air detection device

Abstract

Disclosed in the present invention is an air detection device. The air detection device comprises a detection shell, wherein an air inlet and an air outlet are respectively provided at two ends of the detection shell; a filtering assembly is provided at the end in the detection shell close to the air outlet; an auxiliary assembly is provided on the side of the filtering assembly away from the air outlet; a limiting assembly is provided inside the side wall of the detection shell close to an upper end of the filtering assembly; a cleaning assembly is provided on the side in the detection shell close to the air inlet; a protection assembly is provided at an upper end of an outer side of the detection shell in a sliding-fit manner, and an upper end of the protection assembly is fixedly connected to an upper end of the cleaning assembly; a dust collection box is provided at the bottom end of the detection shell; and a sealing cover assembly is provided on the side of a transmission assembly close to the dust collection box in a transmission-fit manner. The present invention has the following beneficial effects: a filter plate is provided to prevent polluted air from being exhausted to cause secondary pollution to the air; and when a protective sheath moves downwards, the filter plate generates elastic vibration to shake off impurities.

Description

An air detection device Technical Field

[0001] The present invention relates to the technical field of air detection equipment, in particular to an air detection device. Background Art

[0002] Air testing refers to the examination of air composition. In a narrower sense, air testing focuses on indoor air quality from an application perspective. This refers to the detection of harmful substances contained in decorative materials and furniture, which are released into homes and offices, causing decoration pollution.

[0003] For example, Chinese patent publication No. CN214225069U discloses an air detection device that is convenient for absorbing air, including a detection box, a connecting base installed on the detection box, a supporting column installed on the connecting base, a bellows provided on the supporting column, a louver control device installed at the air inlet of the bellows, and a dust cleaning structure provided under the bellows; the beneficial effects are: by setting the louver control device, the louver can be pulled by a pull rod, so that the louver can control the size of the air inlet of the bellows, which is convenient for air absorption and the air absorption process can be controlled, and at the same time, the direction of the bellows can be changed by a handle, so that the bellows can be rotated, and the air inlet of the bellows can be relative to the wind direction; by setting the dust cleaning structure, the dust and debris on the louver can be cleaned, which on the one hand allows better air absorption, and on the other hand will not cause errors in the detection results due to dust and debris on the louver.

[0004] The above scheme does not take into account that if the polluted gas is directly discharged without filtering during detection, it will cause secondary air pollution.

[0005] Summary of the Invention

[0006] The object of the present invention is to provide an air detection device to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] 18. The air filter assembly as claimed in claim 17, wherein the filter assembly is provided with a filter element and the filter element has a bottom end and a bottom end, and the filter element has a bottom end and a bottom end.

[0009] As a further solution of the present invention: a filter plate groove is vertically opened on the side of the detection shell near the air outlet, and the filter assembly includes a filter plate, and the filter plate is slidably matched with the filter plate groove. The filter plate is elastically connected to the filter plate groove on the side near the air outlet, and a first sliding groove is horizontally opened on the upper end of the filter plate groove near the air outlet. A first sliding rod is horizontally fixed to one end of the filter plate near the first sliding groove to maintain the balanced sliding of the filter plate. The first sliding rod is slidably matched with the first sliding groove, and the upper end of the filter plate is movably limited by the limit assembly.

[0010] As a further solution of the present invention: a second sliding groove is provided at the upper end of the filter plate groove away from the air outlet, and the lower end of the second sliding groove is horizontally connected to the filter plate groove. The auxiliary component includes a second sliding rod, and the vertical part of the second sliding rod slides with the second sliding groove. A connecting rope is fixed to the lower end of the second sliding rod, and the other end of the connecting rope passes through the lower end of the second sliding groove and is fixedly connected to the upper end of the filter plate, and the horizontal part of the upper end of the second sliding rod is in movably contact with the protective component.

[0011] As a further solution of the present invention: the limiting assembly includes a third rotating rod, the third rotating plate is horizontally rotatably connected to the side wall of the upper end of the filter plate groove, the third rotating rod is fixed with a third gear, the third gear is vertically meshed and transmitted with a third rack on the side close to the air outlet, the upper end of the third rack passes through the upper end surface of the detection shell, the end of the third rack extending out of the detection shell is elastically connected to the upper end of the detection shell, the upper end of the third rack is movably contacted with the protective assembly, the side of the third gear away from the air outlet is vertically meshed and transmitted with a fourth rack, the fourth rack downwardly passes through the upper end surface of the filter plate groove, the lower end of the fourth rack close to the air outlet is an inclined surface, and the lower end of the fourth rack is limitedly matched with the upper end of the filter plate.

[0012] As a further solution of the present invention: multiple groups of baffles are vertically fixed in the air outlet, the cleaning assembly includes cleaning rods, and the cleaning rods are in two groups. The upper ends of the cleaning rods vertically penetrate the upper end surface of the detection shell, the upper ends of the cleaning rods are fixedly connected to the protective assembly, and the lower ends of the cleaning rods are horizontally fixed with a brush plate, and the brush plate is in contact with the inner side of the baffle, and the lower end of the baffle is horizontally fixed with a dusting rod, and both ends of the dusting rod are fixedly connected to the baffles on both sides, and the dusting rod is in movably contact with the brush plate.

[0013] As a further solution of the present invention: the dust box is slidably inserted into the lower end of the detection shell, and the two ends of the dust box are respectively located under the filter plate groove and the baffle. Dust collecting ports are provided under the filter plate groove and the baffle. The dust collecting ports connect the air inlet and the air outlet in the detection shell, and the sealing cover assembly is arranged on the inner side of the dust collecting port.

[0014] As a further solution of the present invention: the protective component includes a protective sleeve, which is slidably fitted with the side of the detection shell, and the two ends of the detection shell are respectively provided with upper and lower distributed clamping holes for fixing the protective sleeve, and the two ends of the protective sleeve are horizontally slidably fitted with clamping rods, and the side of the clamping rod close to the detection shell is slidably fitted with the clamping hole, and the side of the clamping rod away from the detection shell is elastically connected to the two ends of the protective sleeve, and a groove is vertically opened on the side of the protective sleeve, and a first rack is vertically fixed to the bottom end of the groove, and both sides of the first rack are toothed, and the first rack is transmission-connected to the transmission component.

[0015] As a further solution of the present invention: an auxiliary rod is vertically fixed to the upper end of the protective cover, the auxiliary rod slides through the upper end surface of the detection box body, and the lower end of the auxiliary rod is in movably contact with the second sliding block. When the auxiliary rod moves upward with the protective cover to the bottom end of the auxiliary rod and contacts the second sliding rod, the auxiliary rod drives the second sliding rod to move upward, the upper end of the protective cover is in movably contact with the upper end of the third rack, and the upper end of the protective cover is fixedly connected to the upper end of the cleaning rod.

[0016] As a further solution of the present invention: the transmission assembly includes a first rotating rod, the first rotating rod is rotatably connected to the upper end of the side surface of the detection box body, the first rotating rod is two groups and horizontally symmetrical, the first rotating rod is fixed on the first rotating rod, the first gear is meshed with the first rack for transmission, the first rotating rod one end extending into the side wall of the detection shell is fixed with a first pulley, the lower end of the side inner wall of the detection shell is horizontally rotatably connected to the second rotating rod, the second rotating rod is located obliquely below the first rotating rod toward the two ends of the detection shell, the second rotating rod corresponds to the side wall of the dust collection port close to the inside of the detection shell, the second rotating rod is fixed on the second rotating rod, the second pulley and the first pulley are connected by a transmission belt, and the end of the second rotating rod away from the side surface of the detection shell is transmission connected to the sealing assembly.

[0017] As a further solution of the present invention: the sealing group includes a second gear, the second gear is fixed to the end of the second rotating rod away from the side of the detection shell, the upper end of the second gear is engaged with a second rack, and the upper end of the second rack is horizontally fixed with a cover plate, and the cover plate horizontally penetrates the side wall of the dust collection port close to the inside of the detection shell.

[0018] Compared with the prior art, the beneficial effects of the present invention are: 1. A filter plate is set to filter the exhausted air, thereby preventing the polluted air from being discharged after detection and causing secondary pollution to the air. At the same time, the auxiliary component and the limit component cooperate with each other, and when the protective cover moves downward, the filter plate generates elastic vibration to shake off impurities on the filter plate, thereby preventing the filter plate from being blocked and affecting air circulation; 2. A cleaning component is set, and when the protective cover moves downward, it drives the brush plate to clean the baffle, and when the brush plate moves to the bottom of the baffle, the dusting rod shakes off the dust on the brush plate; 3. A sealing component is set, and when the protective cover moves upward, the sealing component closes the dust collection box, thereby preventing the air flow in the detection shell 2 from driving the dust in the dust collection box 11 to float around during the air detection process, polluting the inside of the detection shell 2, and when the protective cover moves downward, the sealing component opens the dust collection box, and the cleaned dust and impurities fall into the dust collection box. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is a schematic diagram of the overall structure of the present invention.

[0020] FIG2 is a schematic diagram of the internal structure of the protective cover of the present invention.

[0021] FIG3 is a schematic structural diagram of the detection housing in the present invention.

[0022] FIG4 is a schematic structural diagram of the detection housing in the present invention.

[0023] FIG5 is a cross-sectional view of the internal structure of the detection housing in the present invention.

[0024] FIG6 is an enlarged view of the structure of A in FIG5 of the present invention.

[0025] FIG. 7 is a schematic diagram of the detection inside the side wall of the housing according to the present invention.

[0026] FIG8 is a cross-sectional view of the internal structure of B in FIG7 of the present invention.

[0027] FIG9 is a cross-sectional view of the internal structure of C in FIG7 of the present invention.

[0028] FIG10 is a top cross-sectional view of the detection housing in the present invention.

[0029] FIG11 is an enlarged view of the structure of D in FIG10 of the present invention.

[0030] FIG12 is a front cross-sectional view of the detection housing in the present invention.

[0031] FIG13 is an enlarged view of the structure of E in FIG12 of the present invention.

[0032] In the figure: 1. Protective cover; 101. Snap-fit ​​rod; 102. Groove; 103. First rack; 2. Detection housing; 201. Snap-fit ​​hole; 202. Filter plate slot; 203. Dust collection port; 204. First sliding slot; 205. Second sliding slot; 3. Air inlet; 301. Baffle; 302. Dust rod; 4. Air outlet; 401. Blower fan; 5. First rotating rod; 501. First gear. 502, first pulley; 503, transmission belt; 504, second rotating rod; 505, second pulley; 506, second gear; 507, second rack; 508, cover plate; 6, filter plate; 601, first sliding rod; 7, second sliding rod; 701, connecting rope; 8, auxiliary rod; 9, third rotating rod; 901, third gear; 902, third rack; 903, fourth rack; 10, cleaning rod; 1001, brush plate; 11, dust collection box; 12, detection module. DETAILED DESCRIPTION

[0033] Please refer to Figures 1 to 13. In an embodiment of the present invention, an air detection device includes a detection shell 2, the detection shell 2, and an air inlet 3 and an air outlet 4 are respectively provided at both ends of the detection shell 2. A filter component is provided at one end of the detection shell 2 near the air outlet, and an auxiliary component for shaking off impurities attached to the filter component is provided on the side of the filter component away from the air outlet. The auxiliary component is fixedly connected to the filter component, and a limiting component for fixing the filter component during detection is provided in the side wall of the detection shell 2 near the upper end of the filter component, and a cleaning component for cleaning dust at the air inlet is provided on the side of the detection shell 2 near the air inlet. The upper end of the outer side of the detection shell 2 is slidably matched with a filter to prevent dust from entering the interior of the detection shell 2. A protective component, the upper end of the protective component is fixedly connected to the upper end of the cleaning component, and the upper end of the protective component is respectively in active contact with the upper end box of the limit component and the upper end of the auxiliary component. A transmission component is provided on the side wall of the detection shell 2, and the protective component is in transmission cooperation with the transmission component. A dust collection box 11 is provided at the bottom end of the detection shell 2, and the transmission component is close to the side of the dust collection box 11 and is in transmission cooperation with a covering component for closing the dust collection box. When the protective component moves upward, the protective component opens the air inlet 3 and the air outlet 4, drives the cleaning component to move to the upper end of the air inlet 3, drives the auxiliary component to move upward, drives the filter component away from the air outlet 4, and the limiting component limits the filter component. At this time, the protective component drives the covering assembly to close the dust collection box through the transmission assembly.

[0034] When the air is exhausted, the filter 11 is opened, and the dust collector 11 is in an open position, so that the dust collector 11 is in an open position. After that, the protective assembly is slid downward, and the protective assembly drives the dust collection box 11 to open through the transmission assembly. The cleaning assembly cleans the dust on the air inlet 3 from top to bottom to prevent the dust in the air inlet 3 from affecting the detection result during the next use. The cleaned dust falls into the dust collection box 11. At the same time, the protective assembly is disengaged from the auxiliary assembly, and the limit assembly is squeezed downward to drive the limit assembly to release the fixation of the filter assembly. The filter assembly approaches the air outlet and relies on elastic vibration to shake off impurities on the filter assembly to avoid the polluted air being discharged after detection, causing secondary pollution to the air. Impurities fall into the dust collection box 11 until the protective assembly blocks the air inlet 3 and the air outlet 4 to prevent dust from entering the detection shell 2 from the air inlet 3 and the air outlet 4 when the device is not in use.

[0035] Specifically, please refer to Figures 4 to 6 and 8. A filter plate groove 202 is vertically opened on the side of the detection shell 2 near the air outlet 4, and the filter assembly includes a filter plate 6. The filter plate 6 slides with the filter plate groove 202, and the filter plate 6 is elastically connected to the filter plate groove 202 on the side near the air outlet 4. A first sliding groove 204 is horizontally opened on the upper end of the filter plate groove 202 near the air outlet 4. One end of the filter plate 6 near the first sliding groove 204 is horizontally fixed with a first sliding rod 601 for maintaining the balanced sliding of the filter plate. The first sliding rod 601 slides with the first sliding groove 204, and the upper end of the filter plate 6 is movably limited by the limit assembly.

[0036] Further, please refer to Figures 4 to 6 and 8. A second sliding groove 205 is provided at the upper end of the filter plate groove 202 away from the air outlet 4. The lower end of the second sliding groove 205 is horizontally connected to the filter plate groove 202. The auxiliary component includes a second sliding rod 7. The vertical part of the second sliding rod 7 slides with the second sliding groove 205. A connecting rope 701 is fixed to the lower end of the second sliding rod 7. The other end of the connecting rope 701 passes through the lower end of the second sliding groove 205 and is fixedly connected to the upper end of the filter plate 6. When the second sliding rod 7 moves upward, the second sliding rod 7 pulls the filter plate 6 away from the air outlet 4 through the connecting rope 701, and the horizontal part of the upper end of the second sliding rod 7 is in active contact with the protective component.

[0037] When the filter plate 6 is in the air outlet 4, the filter plate 6 is moved to the left of the filter plate 6 and the filter plate 6 is moved to the right of the filter plate 6.

[0038] Further, please refer to Figures 2 to 6. The limit assembly includes a third rotating rod 9. The third rotating plate 9 is horizontally rotatably connected to the side wall of the upper end of the filter plate groove 202. A third gear 902 is fixed to the third rotating rod 9. The third gear 902 is vertically meshed with a third rack 901 on one side close to the air outlet 4. The upper end of the third rack 901 passes through the upper end surface of the detection housing 2. One end of the third rack 901 extends out of the detection housing 2 and is elastically connected to the upper end of the detection housing 2. The upper end of the third rack 901 is in active contact with the protective component, and the third gear 902 is vertically meshed with the fourth rack 903 on the side away from the air outlet 4. The fourth rack 903 penetrates downwardly through the upper end surface of the filter plate slot 202, and the lower end of the fourth rack 903 is close to the air outlet 4. The side is an inclined surface, and the lower end of the fourth rack 903 is limitedly matched with the upper end of the filter plate 6. When the first rack 901 moves downward, it drives the fourth rack 903 to move upward out of the filter plate slot 202.

[0039] When the filter plate 6 is in the air outlet 4, the filter plate 6 is moved to the left of the filter plate 6, and the filter plate 6 is moved to the right of the filter plate 6. When the filter plate 6 is in the air outlet 4, the filter plate 6 is moved to the right of the filter plate 6. When the filter plate 6 is in the air outlet 4, the filter plate 6 is moved to the right of the filter plate 6. When the filter plate 6 is in the air outlet 4, the filter plate 6 is moved to the right of the filter plate 6. When the filter plate 6 is in the air outlet 4, the filter plate 6 is moved to the right of the filter plate 6. When the filter plate 6 is in the air outlet 4, the filter plate 6 is moved to the right of the filter plate 6. When the filter plate 6 is in the air outlet 4, the filter plate 6 is moved to the right of the filter plate 6.

[0040] Further, please refer to Figures 3, 5, 9 to 13. There are multiple groups of baffles 301 vertically fixed in the air outlet 3. The cleaning component includes a cleaning rod 10. The cleaning rod 10 is in two groups. The upper end of the cleaning rod 10 vertically penetrates the upper end surface of the detection shell 2. The upper end of the cleaning rod 10 is fixedly connected to the protective component. A brush plate 1001 is horizontally fixed to the lower end of the cleaning rod 10. The brush plate 1001 is in contact with the inner side of the baffle 301. When the brush plate 1001 moves up and down on the outside of the baffle 301, the brush plate 1001 cleans the dust on the baffle 301 to avoid the dust on the baffle 301 affecting the detection result when it is used next time. A dusting rod 302 is horizontally fixed to the lower end of the baffle 301. The two ends are fixedly connected to the baffles 301 on both sides, and the dusting rod 302 is in active contact with the brush plate 1001. When the brush plate 1001 moves downward to the bottom end of the baffle 301, the brush plate 10001 passes through the dusting rod 302 to shake off the dust on the brush plate 1001, thereby avoiding excessive accumulation of dust on the brush plate 1001 and affecting the subsequent cleaning effect.

[0041] During actual use, in the initial state, the brush plate 1001 is located below the baffle; when the protective component moves upward, it drives the cleaning rod 10 to move upward, and drives the brush plate 1001 to move upward until the brush plate 1001 stays above the baffle; when the detection is completed, the protective component moves downward, drives the cleaning rod 10 to move downward, and drives the brush plate 1001 to move downward. The brush plate 1001 cleans the dust on the baffle 301 from top to bottom to avoid the dust on the baffle 301 affecting the detection result during the next use, until the brush plate 1001 moves downward to the bottom end of the baffle 301, the brush plate 10001 passes through the dusting rod 302, and shakes off the dust on the brush plate 1001 to avoid excessive accumulation of dust on the brush plate 1001 and affecting the subsequent cleaning effect.

[0042] Further, please refer to Figures 1, 3-5, 7-9, 12-13. The dust box 11 is slidably inserted into the lower end of the detection shell 2. The two ends of the dust box 11 are respectively located below the filter plate groove 202 and the baffle 301. Dust collection ports 203 are provided below the filter plate groove 202 and the baffle 301 to facilitate the cleaned dust and debris to fall into the dust box 11. The dust collection port 203 connects the air inlet 3 and the air outlet 4 in the detection shell 2. The sealing cover assembly is arranged on the inner side of the dust collection port 203. During the detection process, the sealing cover assembly closes the dust collection port to prevent the air flow in the detection shell 2 from driving the dust in the dust box 11 to float around and pollute the inside of the detection shell 2 during the air detection process.

[0043] Further, please refer to Figures 1 and 2. The protective component includes a protective sleeve 1, which is slidably fitted with the side of the detection shell 2. Both ends of the detection shell 2 are respectively provided with upper and lower distributed clamping holes 201 for fixing the protective sleeve 1. Both ends of the protective sleeve 1 are horizontally slidably fitted with a clamping rod 101. The side of the clamping rod 101 close to the detection shell 2 is slidably fitted with the clamping hole 201. The side of the clamping rod 101 away from the detection shell 2 is elastically connected to the two ends of the protective sleeve 1. A groove 102 is vertically opened on the side of the protective sleeve 1, and a first rack 103 is vertically fixed to the bottom end of the groove 102. Both sides of the first rack 103 are teeth-shaped, and the first rack 103 is transmission-connected to the transmission component.

[0044] In actual use, in the initial state, the clamping rod 101 slides with the clamping holes 201 below the two ends of the detection shell 2, and the two ends of the protective cover 1 block the air inlet 3 and the air outlet 4; when air detection is needed, the clamping rod 101 is pulled outward to disengage the clamping rod 101 from the clamping hole 201 below, and the protective cover 1 is moved upward to make the clamping rod 101 correspond to the clamping hole 201 above. Under the action of elasticity, the clamping rod 101 slides with the clamping holes 201 above the two ends of the detection shell 2, and the two ends of the protective cover 1 are closed. The air inlet 3 and the air outlet 4 at the end are opened and the detection is started; after the detection is completed, the clamping rod 101 is pulled outward to disengage the clamping rod 101 from the upper clamping hole 201, and the protective cover 1 is moved downward to make the clamping rod 101 correspond to the lower clamping hole 201. Under the action of elasticity, the clamping rod 101 slides with the clamping holes 201 below the two ends of the detection shell 2. The two ends of the protective cover 1 block the air inlet 3 and the air outlet 4 to prevent dust from entering the interior of the detection shell 2 from the air inlet 3 and the air outlet 4 when the device is not in use.

[0045] Further, please refer to Figures 1 to 6 and 8. An auxiliary rod 8 is vertically fixed to the upper end of the protective cover 1. The auxiliary rod 8 slides through the upper end surface of the detection box body 2, and the lower end of the auxiliary rod 8 is in active contact with the second sliding block 7. When the auxiliary rod 8 moves upward with the protective cover 1 to the bottom end of the auxiliary rod 8 and contacts the second sliding rod 7, the auxiliary rod 8 drives the second sliding rod 7 to move upward, and the upper end of the protective cover 1 is in active contact with the upper end of the third rack 901. The upper end of the protective cover 1 is fixedly connected to the upper end of the cleaning rod 10.

[0046] Further, please refer to Figures 3-4, 7-10, and 12, the transmission assembly includes a first rotating rod 5, which is rotatably connected to the upper end of the side surface of the detection box body 2. The first rotating rod 5 is in two groups and is horizontally symmetrical. A first gear 501 is fixed on the first rotating rod 5, and the first gear 501 is meshed with the first rack 103 for transmission. The end of the first rotating rod 5 extending into the side wall of the detection shell 2 is fixed with a first pulley 502, and the lower end of the side inner wall of the detection shell 2 is horizontally rotatably connected to the second rotating rod 504, the second rotating rod 504 is located obliquely below the first rotating rod 5 at both ends of the detection shell 2, the second rotating rod 504 corresponds to the side wall of the dust collecting port 203 close to the inside of the detection shell 2, and the second rotating rod 504 is fixed with a second pulley 505, and the second pulley 505 is connected to the first pulley 502 through a transmission belt 503, and the end of the second rotating rod 504 away from the side of the detection shell 2 is transmission-connected to the cover assembly.

[0047] Further, please refer to Figures 5, 8-9, 12-13. The sealing group includes a second gear 506. The second gear 501 is fixed to the end of the second rotating rod 504 away from the side of the detection shell 2. The upper end of the second gear 506 is engaged with a second rack 507. The upper end of the second rack 507 is horizontally fixed with a cover plate 508. The cover plate 508 horizontally penetrates the side wall of the dust collecting port 203 close to the inside of the detection shell 2. When the cover plate 508 extends out of the inner wall of the dust collecting port 203, the cover plate 508 isolates the detection shell 2 from the dust box 11, so as to prevent the air flow in the detection shell 2 from driving the dust in the dust box 11 to float around during the air detection process, thereby polluting the inside of the detection shell 2.

[0048] In actual use, in the initial state, the cover plate 508 is located inside the side wall of the dust collecting port 203 close to the inside of the detection shell 2, the protective cover 1 is at the bottom, and the first rack 103 is not engaged with the first gear 501; when air detection is needed, the protective cover 1 is moved upward, driving the first gear 103 to mesh with the first gear 501 upward for transmission, driving the first rotating rod 5 to rotate, and driving the second rotating rod 504 to rotate through the transmission belt 503, driving the second gear 506 to rotate, driving the second rack 507 to move out of the dust collecting port 203 close to the side wall inside the detection shell 2, and driving the cover plate 508 to collect air. The dust port 203 is closed to prevent the air flow in the detection shell 2 from driving the dust in the dust box 11 to float around and pollute the inside of the detection shell 2 during the air detection process; when the detection is completed, the protective cover 1 is moved downward, driving the first rotating rod 5 to rotate in the opposite direction, driving the second rotating rod 504 to rotate in the opposite direction, driving the second gear 506 to rotate in the opposite direction, driving the second rack 507 to move toward the dust port 203 close to the side wall inside the detection shell 2, and driving the cover plate 508 to open the dust port 203, so that the dust and debris cleaned by the brush plate 1101 and the filter plate 6 can fall into the dust box 11.

[0049] Furthermore, a detection module 5 is provided in the detection shell 2. Air enters from the air inlet 3, passes through the detection module, and is discharged from the air outlet 4. A blower fan 401 is provided in the air outlet 4 to accelerate the circulation of gas. The above are all existing technologies and will not be elaborated here.

Claims

1. An air detection device, comprising a detection housing, wherein the detection housing has an air inlet and an air outlet at both ends, and a filter assembly is provided at one end of the detection housing near the air outlet, characterized in that: The filter assembly is provided with an auxiliary assembly for shaking off impurities attached to the filter assembly on the side away from the air outlet, and the auxiliary assembly is fixedly connected to the filter assembly, and a limiting assembly is provided in the side wall of the detection shell near the upper end of the filter assembly for fixing the filter assembly during detection, and a cleaning assembly is provided on the side of the detection shell near the air inlet for cleaning dust at the air inlet. The upper end of the outer side of the detection shell is slidably matched with a protective assembly for preventing dust from entering the interior of the detection shell, the upper end of the protective assembly is fixedly connected to the upper end of the cleaning assembly, and the upper end of the protective assembly is movably contacted with the upper end box of the limiting assembly and the upper end of the auxiliary assembly respectively, a transmission assembly is provided on the side wall of the detection shell, and the protective assembly is transmission-matched with the transmission assembly, and a dust box is provided at the bottom end of the detection shell, and a side of the transmission assembly close to the dust box is transmission-matched with a sealing cover assembly for closing the dust box.

2. An air detection device according to claim 1, characterized in that: A filter plate slot is vertically opened on one side of the detection shell near the air outlet, and the filter assembly includes a filter plate, and the filter plate slides in cooperation with the filter plate slot. The filter plate is elastically connected to the filter plate slot on the side near the air outlet, and a first sliding slot is horizontally opened on the upper end of the filter plate slot near the air outlet. A first sliding rod is horizontally fixed to one end of the filter plate near the first sliding slot for maintaining balanced sliding of the filter plate, the first sliding rod slides in cooperation with the first sliding slot, and the upper end of the filter plate is movably limited by the limit assembly.

3. An air detection device according to claim 2, characterized in that: The filter plate slot is provided with a second sliding slot at the upper end away from the air outlet, and the lower end of the second sliding slot is horizontally connected to the filter plate slot. The auxiliary component includes a second sliding rod, and the vertical part of the second sliding rod slides with the second sliding slot. A connecting rope is fixed to the lower end of the second sliding rod, and the other end of the connecting rope passes through the lower end of the second sliding slot and is fixedly connected to the upper end of the filter plate, and the horizontal part of the upper end of the second sliding rod is in movably contact with the protective component.

4. An air detection device according to claim 3, characterized in that: The limiting assembly includes a third rotating rod, the third rotating plate is horizontally rotatably connected to the side wall of the upper end of the filter plate slot, the third rotating rod is fixed to the third rotating rod, and the side of the third gear close to the air outlet is vertically meshed with a third rack, the upper end of the third rack passes through the upper end surface of the detection shell, one end of the third rack extending out of the detection shell is elastically connected to the upper end of the detection shell, the upper end of the third rack is movably contacted with the protective assembly, and the side of the third gear away from the air outlet is vertically meshed with a fourth rack, the fourth rack downwardly passes through the upper end surface of the filter plate slot, the lower end of the fourth rack close to the air outlet is an inclined surface, and the lower end of the fourth rack is limitedly matched with the upper end of the filter plate.

5. An air detection device according to claim 4, characterized in that: Multiple groups of baffles are vertically fixed in the air outlet, and the cleaning component includes cleaning rods, which are divided into two groups. The upper ends of the cleaning rods vertically penetrate the upper end surface of the detection shell, and the upper ends of the cleaning rods are fixedly connected to the protective component. A brush plate is horizontally fixed to the lower end of the cleaning rod, and the brush plate is in contact with the inner side of the baffle. A dusting rod is horizontally fixed to the lower end of the baffle, and both ends of the dusting rod are fixedly connected to the baffles on both sides, and the dusting rod is in movably contact with the brush plate.

6. An air detection device according to claim 5, characterized in that: The dust collecting box is slidably inserted into the lower end of the detection shell, and the two ends of the dust collecting box are respectively located under the filter plate groove and the baffle. Dust collecting ports are provided under the filter plate groove and the baffle. The dust collecting ports connect the air inlet and the air outlet in the detection shell, and the sealing cover assembly is arranged on the inner side of the dust collecting port.

7. An air detection device according to claim 6, characterized in that: The protective assembly includes a protective sleeve, which is slidably engaged with the side of the detection shell, and the two ends of the detection shell are respectively provided with upper and lower distributed clamping holes for fixing the protective sleeve. The two ends of the protective sleeve are horizontally slidably engaged with clamping rods, and the side of the clamping rod close to the detection shell is slidably engaged with the clamping hole, and the side of the clamping rod away from the detection shell is elastically connected to the two ends of the protective sleeve. A groove is vertically opened on the side of the protective sleeve, and a first rack is vertically fixed to the bottom end of the groove. Both sides of the first rack are toothed, and the first rack is transmission-connected to the transmission assembly.

8. An air detection device according to claim 7, characterized in that: An auxiliary rod is vertically fixed to the upper end of the protective cover, and the auxiliary rod slides through the upper end surface of the detection box body, and the lower end of the auxiliary rod is in movably contact with the second sliding block. When the auxiliary rod moves upward with the protective cover to the bottom end of the auxiliary rod and contacts the second sliding rod, the auxiliary rod drives the second sliding rod to move upward, and the upper end of the protective cover is in movably contact with the upper end of the third rack, and the upper end of the protective cover is fixedly connected to the upper end of the cleaning rod.

9. An air detection device according to claim 8, characterized in that: The transmission assembly includes a first rotating rod, wherein the first rotating rod is rotatably connected to the upper end of the side surface of the detection box body, the first rotating rod has two groups and are horizontally symmetrical. The first rotating rod is fixed on the first rotating rod, and the first gear is meshed with the first rack for transmission. One end of the first rotating rod extending into the side wall of the detection shell is fixed with a first pulley, and the lower end of the inner wall of the side surface of the detection shell is horizontally rotatably connected to the second rotating rod. The second rotating rod is located obliquely below the first rotating rod toward both ends of the detection shell, and the second rotating rod corresponds to the side wall of the dust collecting port near the inside of the detection shell. The second pulley is fixed on the second rotating rod, and the second pulley is connected to the first pulley through a transmission belt. The end of the second rotating rod away from the side surface of the detection shell is transmission connected to the covering assembly.

10. An air detection device according to claim 9, characterized in that: The sealing group includes a second gear, which is fixed to the end of the second rotating rod away from the side of the detection shell, the upper end of the second gear is engaged with a second rack, and the upper end of the second rack is horizontally fixed with a cover plate, and the cover plate horizontally passes through the side wall of the dust collection port close to the inside of the detection shell.

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