Air quality detector

Abstract

The invention discloses an air quality detector which comprises a shell, a protective cover is fixedly connected to the side wall of the shell, a collecting assembly is arranged on the protective cover, a filtering assembly is arranged in the shell, a detecting assembly is arranged in the shell, and the filtering assembly comprises an air storage cylinder rotationally connected to the interior of the shell; and a rotating column is fixedly connected to the bottom end of the air storage cylinder and rotationally connected with the shell, a second motor is fixedly connected to the interior of the shell, the output end of the second motor is fixedly connected with the rotating column, and a tripod is arranged at the bottom of the shell. By arranging the filtering assembly, moisture, dust and particulate matter in air can be rapidly separated, interference of impurities on a detection element is reduced, the air cleanliness is guaranteed, the situation that the detection effect is affected due to impurity attachment is avoided, meanwhile, water stains in a water guide groove are scraped through a protruding block, an inclined plate is driven by a push block to collect dust, automatic reset is matched with a torsional spring, and the detection efficiency is improved. And self-cleaning of the gas storage barrel is achieved.

Description

Technical Field

[0001] This invention relates to the field of air quality detection technology, and more particularly to an air quality detector. Background Technology

[0002] With the popularization of environmental governance and healthy living concepts, air quality detection technology is being used more and more widely in fields such as industrial production, indoor environmental monitoring, and public health prevention and control. Accurately obtaining the concentration of pollutants in the air and air quality parameters has become a key requirement to ensure production safety and human health.

[0003] For current testing instruments, the existing ambient air quality testing device disclosed in patent number "CN115561407B" can filter dust in the air by setting a filter screen inside the testing cylinder, so as to avoid dust clogging the equipment and avoid dust affecting subsequent testing. At the same time, when blowing air, the air pressure can push the push plate to move, causing the push plate to hit the filter screen, shaking off the dust on the filter screen and expelling it.

[0004] The device directly draws in outside air through an air pump and pre-treats it using filters before introducing it into multiple detection cylinders for testing. However, the air contains a large amount of substances, including moisture and various fine particles, which cannot be effectively intercepted by filters alone. This results in unfiltered moisture and impurities entering the detection cylinders with the airflow. These moisture and impurities adhere directly to the surface of the detection elements, contaminating them and interfering with their sensing accuracy. Consequently, the detection data becomes significantly inaccurate, failing to accurately reflect the actual air quality.

[0005] Accordingly, this application proposes an air quality detector. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing an air quality detector.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An air quality detector includes a housing, a protective cover fixedly connected to the side wall of the housing, a data collection component disposed on the protective cover, a filter component disposed inside the housing, a detection component disposed inside the housing, the filter component including an air storage cylinder rotatably connected inside the housing, a rotating column fixedly connected to the bottom end of the air storage cylinder, the rotating column being rotatably connected to the housing, a second motor fixedly connected inside the housing, the output end of the second motor being fixedly connected to the rotating column, and a tripod disposed at the bottom of the housing.

[0009] Preferably, a sealing cover is rotatably connected to the top surface of the air storage cylinder, the sealing cover is fixedly connected to the outer shell, multiple water guide grooves are opened on the inner wall of the air storage cylinder, a groove-shaped baffle is fixedly connected to the inner wall of the air storage cylinder, a cavity is opened on the inner wall of the groove-shaped baffle, and a rotating rod is rotatably connected to the inner wall of the cavity.

[0010] Preferably, an inclined plate is fixedly connected to the rotating rod, and a torsion spring is sleeved on the rotating rod. One end of the torsion spring is fixedly connected to the cavity, and the other end of the torsion spring is fixedly connected to the inclined plate.

[0011] Preferably, a horizontal plate is fixedly connected to the side wall of the gas storage cylinder, an electric push rod is fixedly connected to the top of the horizontal plate, a connecting frame is fixedly connected to the output end of the electric push rod, the connecting frame is slidably connected to the sealing cover, a disc is fixedly connected to the bottom end of the connecting frame, a plurality of protrusions are provided on the disc, the protrusions slide in the water guide groove, two through holes are opened on the disc, a push block is fixedly connected to the bottom end of the disc, and a drain pipe is connected to the bottom end of the gas storage cylinder.

[0012] Preferably, the acquisition component includes a suction fan connected inside the protective shell, a bracket fixedly connected to the side wall of the protective shell, a first motor fixedly connected to the bottom end of the bracket, a rotating shaft fixedly connected to the output end of the first motor, the rotating shaft being rotatably connected to the bracket, a threaded rod fixedly connected to the end of the rotating shaft away from the first motor, the threaded rod being rotatably connected to the bracket, a slider threadedly connected to the threaded rod, and the slider being slidably connected to the bracket.

[0013] Preferably, the suction fan is connected to an air inlet pipe, and an air inlet hood is provided at the end of the air inlet pipe away from the suction fan. The air inlet pipe is fixedly connected to the slider. The suction fan is connected to a conveying pipe, and the conveying pipe passes through the sealing cover and communicates with the air storage cylinder.

[0014] Preferably, the detection assembly includes a detection cylinder fixedly connected inside the housing, a connecting pipe communicating with the side wall of the detection cylinder, the connecting pipe passing through the sealing cover and communicating with the gas storage cylinder, and a push plate slidably connected inside the detection cylinder, the push plate being fixedly connected to the connecting frame.

[0015] Preferably, an annular frame is fixedly connected inside the detection cylinder, an air detector is installed on the annular frame, and an exhaust pipe is connected to the bottom end of the detection cylinder.

[0016] Preferably, the disc is slidably connected to the sealing cover, and the disc is slidably connected to the conveying pipe and the connecting pipe respectively.

[0017] Preferably, the number of push blocks corresponds to the number of inclined plates, and the number of protrusions corresponds to the number of water guide channels.

[0018] The present invention has the following beneficial effects:

[0019] 1. This invention can quickly separate moisture, dust and particulate matter in the air through the filter component, reduce the interference of impurities on the detection element, ensure air cleanliness, and avoid the impact of impurities on the detection effect. At the same time, the protrusion scrapes water stains from the water guide groove and the push block drives the inclined plate to collect dust. With the help of the torsion spring for automatic reset, the air storage tank can be self-cleaned.

[0020] 3. The present invention uses a pusher plate in the detection assembly to create a stable thrust on the air inside the detection cylinder, which causes the air to fully cover the sensing element of the air detector, avoids the occurrence of detection blind spots, and allows the air detector to capture pollutant information more comprehensively, further ensuring the reliability of the detection data.

[0021] 3. This invention, through its data acquisition components, enables comprehensive data collection of air at different altitude levels within the detection area, effectively avoiding the limitations of single-altitude data collection and providing accurate data for air quality assessment. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of an air quality detector proposed in this invention;

[0023] Figure 2 This is a schematic diagram of the structure of the outer shell and the acquisition component in this invention;

[0024] Figure 3 This is a schematic diagram of the acquisition component in this invention;

[0025] Figure 4 This is a schematic diagram of the internal cross-sectional structure of the outer shell in this invention;

[0026] Figure 5 This is a schematic diagram of the connection structure between the gas storage cylinder and the detection cylinder in this invention;

[0027] Figure 6 This is a schematic diagram of the internal cross-sectional structure of the gas storage cylinder and the detection cylinder in this invention;

[0028] Figure 7 This is a schematic diagram of the structure of some parts of the filter assembly in this invention;

[0029] Figure 8 This is a cross-sectional view of the groove-shaped baffle in this invention;

[0030] Figure 9 for Figure 8 Enlarged structural diagram at point A in the middle.

[0031] In the diagram: 1. Outer shell; 2. Protective cover; 3. Data collection component; 31. Fan; 32. Bracket; 33. First motor; 34. Rotating shaft; 35. Threaded rod; 36. Slider; 37. Air inlet pipe; 38. Suction hood; 39. Delivery pipe; 4. Filter assembly; 41. Air storage tank; 401. Sealing cover; 42. Second motor; 43. Rotating column; 44. Water guide trough; 45. Channel baffle; 46. Empty 47. Cavity; 48. Rotating rod; 49. Torsion spring; 40. Inclined plate; 410. Horizontal plate; 411. Electric push rod; 412. Connecting frame; 413. Disc; 414. Protrusion; 415. Through hole; 416. Push block; 417. Drain pipe; 5. Detection assembly; 51. Detection cylinder; 511. Connecting pipe; 52. Push plate; 53. Ring frame; 54. Air detector; 55. Exhaust pipe; 6. Tripod. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0033] Example 1:

[0034] Reference Figures 1 to 9 An air quality detector includes a housing 1, a protective cover 2 fixedly connected to the side wall of the housing 1, a data acquisition component 3 mounted on the protective cover 2, a filter component 4 and a detection component 5 mounted inside the housing 1, and a tripod 6 mounted at the bottom of the housing 1. The data acquisition component 3 includes a suction fan 31 mounted inside the protective cover, a bracket 32 ​​fixedly connected to the side wall of the protective cover 2, a first motor 33 fixedly connected to the bottom end of the bracket 32, a rotating shaft 34 fixedly connected to the output end of the first motor 33, the rotating shaft 34 being rotatably connected to the bracket 32, a threaded rod 35 fixedly connected to the end of the rotating shaft 34 away from the first motor 33, the threaded rod 35 being rotatably connected to the bracket 32, and a slider 36 threadedly connected to the threaded rod 35, the slider 36 being slidably connected to the bracket 32.

[0035] The suction fan 31 is connected to an air inlet pipe 37. An air inlet hood 38 is provided at the end of the air inlet pipe 37 away from the suction fan 31. The air inlet pipe 37 is fixedly connected to the slider 36. The suction fan 31 is connected to a conveying pipe 39. The conveying pipe 39 passes through the sealing cover 401 and communicates with the air storage cylinder 41.

[0036] In this embodiment, the tripod 6 is first unfolded and adjusted to a horizontal and stable state. After being placed in the designated area to be tested, the pre-set threaded interface at the bottom of the outer shell 1 is precisely connected to the connecting seat at the top of the tripod 6. The fixing bolts are tightened to securely install the shell on the tripod 6, ensuring that the equipment will not shake or tip over during the data collection and testing process.

[0037] At this time, the suction fan 31 is started through the equipment control panel. After the suction fan 31 is running, a negative pressure is formed inside. Under the suction effect of the negative pressure, the air in the detection area is quickly sucked into the air intake pipe 37 through the suction hood 38. The air forms a stable airflow in the air intake pipe 37 and is uniformly transported to the air storage cylinder 41 through the delivery pipe 39. The filter component 4 inside the air storage cylinder 41 filters out large particles of dust, moisture and other substances in the collected air.

[0038] During air sampling, due to differences in pollutant concentrations and impurity composition at different altitudes, it is necessary to collect air at different altitudes in stratified layers to ensure the comprehensiveness and representativeness of the detection data. At this time, the first motor 33 is activated, and its output drives the rotating shaft 34 to rotate. The threaded rod 35, fixedly connected to the top of the rotating shaft 34, then rotates along the inner wall of the bracket 32 ​​under the drive of the rotating shaft 34. Because the side wall of the bracket 32 ​​has a guide groove that matches the slider 36, and the slider 36, threaded onto the threaded rod 35, is embedded in this groove, under the threaded transmission of the threaded rod 35 and the limiting effect of the groove on the side wall of the bracket 32, the slider 36 cannot rotate circumferentially with the rotation of the threaded rod 35. It can only slide stably up and down along the guide direction of the groove, simultaneously driving the intake pipe 37, which is fixedly connected to it, to move up and down.

[0039] The air intake pipe 37 is made of a telescopic corrugated flexible hose, which has good axial extensibility and flexibility. It can freely extend and retract when moving up and down with the slider 36 without obstructing airflow or causing structural damage due to deformation. As the air intake pipe 37 moves up and down, the suction hood 38 connected to it also changes its height position under the action of the slider 36, thereby achieving comprehensive collection of air at different altitude levels from low to high within the detection area.

[0040] Example 2:

[0041] Reference Figure 4 - Figure 9 This embodiment also includes the following further features: the filter assembly 4 includes an air storage cylinder 41 rotatably connected inside the outer shell 1, a rotating column 43 fixedly connected to the bottom end of the air storage cylinder 41, the rotating column 43 being rotatably connected to the outer shell 1, a second motor 42 fixedly connected inside the outer shell 1, the output end of the second motor 42 being fixedly connected to the rotating column 43, a sealing cover 401 rotatably connected to the top surface of the air storage cylinder 41, the sealing cover 401 being fixedly connected to the outer shell 1, multiple water guide grooves 44 being formed on the inner wall of the air storage cylinder 41, a groove-shaped baffle 45 being fixedly connected to the inner wall of the air storage cylinder 41, a cavity 46 being formed on the inner wall of the groove-shaped baffle 45, and a rotating rod 47 being rotatably connected to the inner wall of the cavity 46.

[0042] An inclined plate 49 is fixedly connected to the rotating rod 47, and a torsion spring 48 is sleeved on the rotating rod 47. One end of the torsion spring 48 is fixedly connected to the cavity 46, and the other end of the torsion spring 48 is fixedly connected to the inclined plate 49. A horizontal plate 410 is fixedly connected to the side wall of the gas storage cylinder 41, and the horizontal plate 410 is fixedly connected to the detection cylinder 51.

[0043] An electric push rod 411 is fixedly connected to the top of the horizontal plate 410. A connecting frame 412 is fixedly connected to the output end of the electric push rod 411. A disc 413 is fixedly connected to the bottom end of the connecting frame 412. Multiple protrusions 414 are provided on the disc 413. The protrusions 414 slide in the water guide groove 44. The number of protrusions 414 corresponds to the number of water guide grooves 44.

[0044] Two through holes 415 are provided on the disc 413. The disc 413 is slidably connected to the conveying pipe 39 and the connecting pipe 511 respectively. A solenoid valve is provided in the connecting pipe 511.

[0045] A push block 416 is fixedly connected to the bottom of the disc 413. The number of push blocks 416 corresponds to the number of inclined plates 49. The bottom of the air storage cylinder 41 is connected to a drain pipe 417. A solenoid valve is installed in the drain pipe 417. When the water at the bottom of the air storage cylinder 41 reaches a certain value, the solenoid valve opens to drain the water in the air storage cylinder 41.

[0046] In this embodiment, after the air collected by the collection component 3 is introduced into the air storage cylinder 41 through the delivery pipe 39, the control system issues a command to start the second motor 42. The output shaft of the second motor 42 drives the rotating column 43, which is fixedly connected to it, to rotate. Under its drive, the air storage cylinder 41, which is fixedly connected to the rotating column 43, rotates stably inside the outer shell 1 with the rotating column 43 as the center. Since the top of the air storage cylinder 41 and the sealing cover 401 adopt a rotating connection structure, and the sealing cover 401 is fixed to the inner wall of the outer shell 1 by the L-shaped bracket 32, the air storage cylinder 41 cannot drive the sealing cover 401 to move synchronously when it rotates. It can only rotate independently in the pre-set annular connecting groove at the bottom of the sealing cover 401, which ensures the sealing of the rotation process and avoids structural interference.

[0047] During the rotation of the air storage cylinder 41, a stable centrifugal force field is generated inside. The air inside the cylinder moves in a circular motion synchronously with the air storage cylinder 41 under the action of centrifugal force. During this process, moisture, dust, and particulate matter mixed in the air, because their density is much greater than that of air, will separate from the main air mass under the separation action of centrifugal force. Among them, liquid moisture is guided by centrifugal force, flows rapidly along the inner wall of the air storage cylinder 41 and falls into the water guide trough 44, and then collects at the bottom of the air storage cylinder 41. Solid dust and particulate matter, under the combined action of centrifugal force and gravity, settle and adhere to the surface of the groove-shaped baffle 45 and the symmetrically arranged inclined plates 49 inside the air storage cylinder 41. The clean air after centrifugal separation flows upward under the action of pressure difference and gathers in the cavity 46 at the top of the air storage cylinder 41.

[0048] After the filtration time reaches the preset duration, the control system shuts off the second motor 42, and the air storage cylinder 41 gradually stops rotating. At this time, the solenoid valve in the connecting pipe 511 connecting the air storage cylinder 41 and the detection cylinder 51 automatically opens, and the clean air in the upper part of the air storage cylinder 41 is steadily delivered to the detection cylinder 51 through the connecting pipe 511 under its own pressure, where the detection component 5 detects the composition and concentration of pollutants in the air.

[0049] After clean air has been completely delivered to the detection cylinder 51, the electric push rod 411 at the top of the horizontal plate 410 is activated. The output end of the electric push rod 411 retracts inward, driving the connecting frame 412 at the top to slide downward within the sealing cover 401. Simultaneously, the connecting frame 412 drives the bottom-fixed disc 413 and push plate 52 to move downward in sync. During the downward movement of the disc 413, the protrusion 414 on its outer side wall slides against the inner wall of the water guide groove 44, scraping away any residual water stains on the inner wall of the water guide groove 44, ensuring that all water stains are collected at the bottom of the air storage cylinder 41.

[0050] As the disc 413 continues to descend, the push blocks 416 symmetrically positioned at its bottom gradually contact the upper surfaces of the two inclined plates 49 and apply a downward pushing force. Under the action of the pushing force, the two inclined plates 49, which were originally in a horizontally attached state, gradually tilt downward around the bottom hinge point. The tilt angle gradually increases as the push blocks 416 move downward. Dust and particles attached to the surface of the inclined plates 49 slide down rapidly along the inclined surface and collect at the bottom of the air storage cylinder 41, completing the centralized collection of dust. When the inclined plates 49 rotate, they will synchronously drive the rotating rod 47 fixedly connected to them to rotate in the shaft hole of the grooved baffle 45. During the rotation of the rotating rod 47, it will stretch the torsion spring 48 sleeved on its outer side, allowing the torsion spring 48 to store elastic potential energy.

[0051] After the detection cylinder 51 completes the detection, the control system issues a reset command, and the electric push rod 411 restarts, driving the lifting frame to move upward. The disc 413 and push block 416 move upward synchronously. As the push block 416 gradually separates from the surface of the inclined plate 49, the external force on the inclined plate 49 disappears, and the torsion spring 48 sleeved on the rotating rod 47 releases its elastic potential energy, driving the rotating rod 47 to rotate in the opposite direction. This, in turn, drives the two inclined plates 49 to return to their initial horizontally aligned state, preparing for the dust collection work of the next air filtration process.

[0052] Example 3:

[0053] like Figure 6 - Figure 7 As shown, compared to Embodiment 1 and Embodiment 2, in this embodiment, the detection component 5 includes a detection cylinder 51 fixedly connected inside the outer shell 1. The side wall of the detection cylinder 51 is connected to a connecting pipe 511, which passes through the sealing cover 401 and communicates with the air storage cylinder 41. A push plate 52 is slidably connected inside the detection cylinder 51, and the push plate 52 is fixedly connected to the connecting frame 412. An annular frame 53 is fixedly connected inside the detection cylinder 51, and an air detector 54 is installed on the annular frame 53. An exhaust pipe 55 is connected to the bottom end of the detection cylinder 51, and a solenoid valve is provided inside the exhaust pipe 55.

[0054] The air detector 54 includes an electrochemical sensor for different pollutants, a data acquisition module responsible for signal conversion and data processing, a main control unit for coordinating the operation of the equipment, and a display screen for displaying results or a communication component for remote data transmission. These are existing technologies known in the field and will not be described in detail.

[0055] In this embodiment, as the connecting frame 412 moves downward, the push plate 52 fixed at its bottom descends synchronously. At this time, the push plate 52 will exert a continuous and uniform downward force on the air that has entered the detection cylinder 51, forcing the air to flow in a specific direction and push it to the sensing surface of the air detector 54. The air detector 54 and the grooved baffle 45 in the air storage cylinder 41 are designed to be at the same height. When the disc 413 descends to contact the grooved baffle 45 and pushes the inclined plate 49 to rotate, the push plate 52 is exactly above the air detector 54, maintaining a safe gap between them and preventing contact.

[0056] The air driven by the push plate 52 will fully fill the detection area inside the detection cylinder 51, fully covering the sensing element of the air detector 54, avoiding detection blind spots caused by uneven air distribution, and ensuring that the detection element can fully capture information about pollutants in the air.

[0057] During the testing process, if it is necessary to retain the air sample inside the testing cylinder 51, a dedicated sealed storage bottle is connected through the threaded interface at the bottom of the exhaust pipe 55 of the testing cylinder 51. After tightening, ensure that the interface is sealed without leakage. Then, the control system issues a command to open the solenoid valve inside the exhaust pipe 55. The air sample inside the testing cylinder 51 will be smoothly transported to the storage bottle along the exhaust pipe 55 under its own pressure difference to complete the sealing and prevent the sample from being contaminated by the outside air. When the entire testing process is completed, if no sample retention is required or the sample retention operation has been completed, simply open the solenoid valve inside the exhaust pipe 55 again. The tested air will be quickly discharged to the outside through the exhaust pipe 55, realizing the emptying of the inside of the testing cylinder 51 and preparing for the next testing process.

[0058] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An air quality detector, comprising a housing (1), characterized in that, A protective cover (2) is fixedly connected to the side wall of the outer shell (1). A collection component (3) is provided on the protective cover (2). A filter component (4) is provided inside the outer shell (1). A detection component (5) is provided inside the outer shell (1). The filter component (4) includes an air storage cylinder (41) rotatably connected inside the outer shell (1). A rotating column (43) is fixedly connected to the bottom end of the air storage cylinder (41). The rotating column (43) is rotatably connected to the outer shell (1). A second motor (42) is fixedly connected inside the outer shell (1). The output end of the second motor (42) is fixedly connected to the rotating column (43). A tripod (6) is provided at the bottom of the outer shell (1).

2. An air quality detector according to claim 1, characterized in that, A sealing cover (401) is rotatably connected to the top surface of the gas storage cylinder (41). The sealing cover (401) is fixedly connected to the outer shell (1). Multiple water guide grooves (44) are opened on the inner wall of the gas storage cylinder (41). A groove-shaped baffle (45) is fixedly connected to the inner wall of the gas storage cylinder (41). A cavity (46) is opened on the inner wall of the groove-shaped baffle (45). A rotating rod (47) is rotatably connected to the inner wall of the cavity (46).

3. An air quality detector according to claim 2, characterized in that, An inclined plate (49) is fixedly connected to the rotating rod (47), and a torsion spring (48) is sleeved on the rotating rod (47). One end of the torsion spring (48) is fixedly connected to the cavity (46), and the other end of the torsion spring (48) is fixedly connected to the inclined plate (49).

4. An air quality detector according to claim 1, characterized in that, A horizontal plate (410) is fixedly connected to the side wall of the gas storage cylinder (41). An electric push rod (411) is fixedly connected to the top of the horizontal plate (410). A connecting frame (412) is fixedly connected to the output end of the electric push rod (411). The connecting frame (412) is slidably connected to the sealing cover (401). A disc (413) is fixedly connected to the bottom end of the connecting frame (412). A plurality of protrusions (414) are provided on the disc (413). The protrusions (414) slide in the water guide groove (44). Two through holes (415) are opened on the disc (413). A push block (416) is fixedly connected to the bottom end of the disc (413). A drain pipe (417) is connected to the bottom end of the gas storage cylinder (41).

5. An air quality detector according to claim 1, characterized in that, The acquisition component (3) includes a suction fan (31) installed inside the protective shell. A bracket (32) is fixedly connected to the side wall of the protective cover (2). A first motor (33) is fixedly connected to the bottom end of the bracket (32). A rotating shaft (34) is fixedly connected to the output end of the first motor (33). The rotating shaft (34) is rotatably connected to the bracket (32). A threaded rod (35) is fixedly connected to the end of the rotating shaft (34) away from the first motor (33). The threaded rod (35) is rotatably connected to the bracket (32). A slider (36) is threadedly connected to the threaded rod (35). The slider (36) is slidably connected to the bracket (32).

6. An air quality detector according to claim 5, characterized in that, The suction fan (31) is connected to an air inlet pipe (37), and an air inlet hood (38) is provided at the end of the air inlet pipe (37) away from the suction fan (31). The air inlet pipe (37) is fixedly connected to the slider (36). The suction fan (31) is connected to a conveying pipe (39), and the conveying pipe (39) passes through the sealing cover (401) and communicates with the air storage cylinder (41).

7. An air quality detector according to claim 4, characterized in that, The detection component (5) includes a detection cylinder (51) fixedly connected inside the outer shell (1). The side wall of the detection cylinder (51) is connected to a connecting pipe (511). The connecting pipe (511) passes through the sealing cover (401) and communicates with the gas storage cylinder (41). A push plate (52) is slidably connected inside the detection cylinder (51). The push plate (52) is fixedly connected to the connecting frame (412).

8. An air quality detector according to claim 7, characterized in that, An annular frame (53) is fixedly connected inside the detection cylinder (51), and an air detector (54) is installed on the annular frame (53). An exhaust pipe (55) is connected to the bottom end of the detection cylinder (51).

9. An air quality detector according to claim 7, characterized in that, The disc (413) is slidably connected to the sealing cover (401), and the disc (413) is slidably connected to the conveying pipe (39) and the connecting pipe (511) respectively.

10. An air quality detector according to claim 4, characterized in that, The number of push blocks (416) corresponds to the number of inclined plates (49), and the number of protrusions (414) corresponds to the number of water guide channels (44).

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