Air pollution detection device

Abstract

The invention relates to the technical field of air pollution detection, and discloses an air pollution detection device which comprises a detector main body, a main display screen mounted on the front side of the detector main body, two mounting brackets mounted at the bottom of the detector main body, and an audible and visual alarm mounted at the upper end of the detector main body, one side, far away from the main display screen, of the detector main body is fixedly connected with a transmission motor electrically connected with a power supply and a controller in the detector main body, an output shaft of the transmission motor is fixedly connected with a transmission rod, and the other end of the transmission rod is fixedly connected with a connecting block. According to the air pollution detection device, the transmission rod and the connecting ring are driven by the transmission motor to realize 360-degree omnibearing scanning of the detection head, so that the limitation of a traditional fixed detector is broken through, and a larger range of space around the detector can be covered; four sub-display screens are arranged to display pollutant concentration values and rankings in four different directions (upper, lower, left and right), so that the direction of a pollution source can be quickly positioned.

Description

Technical Field

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

[0002] Air pollution monitoring devices are used to monitor the concentration of various pollutants in the air. They can help us understand the air quality and take necessary measures to protect the environment and human health. Currently, the most common device for monitoring air pollution concentration is the dust concentration detector.

[0003] The patent currently announced with number CN222105295U discloses a dust concentration detection device, including a detection device body, a display screen fixedly connected to the front end of the detection device body, an alarm light fixedly connected to the right side of the detection device body, a connecting plate fixedly connected to the rear end of the detection device body, vertical sliding rods fixedly connected to the left and right sides of the connecting plate, a socket is provided at the center of one side of the vertical sliding rod away from the connecting plate, a mounting plate is provided at the rear end of the connecting plate, the bottom of the mounting plate is fixedly connected to the bottom plate, the left and right sides of the front end of the mounting plate are fixedly connected to the clamping plate, and a clamping mechanism is provided at the center of the side away from the clamping plate, a dehumidification mechanism is provided at the bottom of the detection device body, and a self-cleaning air intake mechanism is provided at the bottom of the dehumidification mechanism. The connecting plate, vertical sliding rod, socket, mounting plate and clamping mechanism are used in combination to facilitate maintenance personnel to quickly install and disassemble the detector body, facilitate maintenance personnel to repair the detector body, and bring convenience to maintenance personnel.

[0004] However, the above-mentioned dust concentration detector still has the following problems in actual use:

[0005] Dust concentration detectors are fixed in a specific location during monitoring, and the monitoring terminal cannot be moved. This results in the monitored data often being the real-time concentration of the area in which they are located. However, when monitoring airborne suspended particulate concentration, relying solely on the values in the area can only determine whether the suspended particulate concentration in the current space exceeds the standard, but cannot determine the main source of the suspended particulate matter, making it difficult to carry out targeted spraying or ventilation. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the present invention provides an air pollution detection device, which can detect a larger range around the detector body and determine the main source direction at the same time.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an air pollution detection device, comprising a detector body, a main display screen installed on the front side of the detector body, two mounting brackets installed on the bottom of the detector body, and an audible and visual alarm installed on the upper end of the detector body, a transmission motor electrically connected to the internal power supply and controller of the detector body is fixedly connected to the side of the detector body away from the main display screen, the output shaft of the transmission motor is fixedly connected to a transmission rod, the other end of the transmission rod is fixedly connected to a connecting block, the lower end of the connecting block is fixedly connected to an outer tube, and the inner wall of the lower end of the connecting block is also fixedly connected to a telescopic motor electrically connected to the internal power supply and controller of the detector body, a lifting opening is provided inside the outer tube, the output shaft of the telescopic motor passes through the lifting opening and is fixedly connected to a screw rod, the inner wall of the lifting opening is slidably connected to the inner tube, the upper end of the inner tube is provided with a threaded opening threadedly connected to the screw rod, the outer wall of the output shaft of the telescopic motor is rotatably connected to the inner wall of the point where the outer tube passes through, and the lower end of the inner tube passes through the outside of the lifting opening and is threadedly connected to the detection head.

[0008] Furthermore, the outer wall of the transmission rod is fixedly connected to a connecting ring, the outer wall of the connecting ring is fixedly connected to connecting bar No. 1, and the outer wall of the connecting ring is rotatably connected to connecting bar No. 2, connecting bar No. 3 and connecting bar No. 4, and the other ends of connecting bar No. 1, connecting bar No. 2, connecting bar No. 3 and connecting bar No. 4 are fixedly connected to a sub-display screen electrically connected to the power supply and controller inside the detector body, and the sub-display screen has two areas: numerical display and concentration ranking.

[0009] Furthermore, two limit blocks and two support plates are fixedly connected to the side of the detector body away from the main display screen. The two limit blocks are respectively located on both sides of the No. 4 connecting bar. The left sides of the two support plates are fixedly connected with No. 1 magnets that are attracted to the No. 2 connecting bar and the No. 3 connecting bar respectively.

[0010] Furthermore, a stop block capable of pushing the No. 2 connecting bar and the No. 3 connecting bar is fixedly connected to one side of the No. 1 connecting bar.

[0011] Furthermore, the inner walls of the No. 2 connecting bar and the No. 3 connecting bar near one end of the connecting ring are fixedly connected with a No. 3 magnet, and the outer wall of the connecting ring is fixedly connected with a No. 2 magnet that can be attracted to the two No. 3 magnets.

[0012] Furthermore, four No. 1 trigger switches are fixedly connected to the side of the detector body away from the main display screen, which are respectively offset against the No. 1 connecting bar, the No. 2 connecting bar, the No. 3 connecting bar and the No. 4 connecting bar to realize the opening and closing of the four sub-display screens. The four No. 1 trigger switches are all electrically connected to the internal power supply and controller of the detector body.

[0013] Furthermore, two sliding grooves are provided on the inner wall of the outer tube, and two sliders are fixedly connected to the upper end of the inner tube, and the outer walls of the two sliders are slidably connected to the inner walls of the two sliding grooves respectively.

[0014] Furthermore, a lamp holder is provided on the inner wall of the outer tube, and a No. 1 lighting lamp electrically connected to the power supply and controller inside the detector body is fixedly connected to the outer wall of the outer tube, and a No. 2 lighting lamp electrically connected to the power supply and controller inside the detector body is fixedly connected to the outer wall of the inner tube, and the outer wall of the No. 2 lighting lamp is slidably connected to the inner wall of the lamp holder.

[0015] Furthermore, a connecting plate is fixedly connected to the outer wall of the inner tube at one end outside the outer tube, and a No. 2 trigger switch electrically connected to the power supply and controller inside the detector body is fixedly connected to the connecting plate and the adjacent side of the outer tube.

[0016] Furthermore, an installation cavity is opened on the side of the detector body away from the main display screen, the transmission motor is located inside the installation cavity, and the outer wall of the transmission motor is fixedly connected to the inner wall of the installation cavity, and the output shaft of the transmission motor passes through the outside of the installation cavity.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. This type of air pollution detection device uses a transmission motor to drive the transmission rod and connecting ring to achieve 360° all-round scanning of the detection head, breaking through the limitations of traditional fixed detectors and covering a wider range of space around the detector.

[0019] 2. This type of air pollution detection device helps to quickly locate the direction of the pollution source by setting up four sub-display screens to display the pollutant concentration values and rankings in four different directions (up, down, left, and right).

[0020] 3. This type of air pollution detection device uses a telescopic motor and a screw to drive the inner tube to rise and fall, so that the detection head can move up and down and extend, breaking through the fixed detection height limit and adapting to the detection needs of different scenarios.

[0021] 4. In this air pollution detection device, the No. 2 lighting lamp on the outer wall of the inner tube and the No. 1 lighting lamp on the outer tube form a coordinated lighting system, which visualizes the dust distribution through the "Tyndall effect" and enhances the intuitiveness of detection.

[0022] 5. This air pollution detection device realizes automatic retraction and extension of the sub-display screen by setting a No. 2 magnet on the connecting ring and a No. 3 magnet on the No. 2 connecting strip and the No. 3 connecting strip. The No. 4 connecting strip is unfolded when working and is not in operation, thus taking into account both portability and functionality.

[0023] 6. This air pollution detection device realizes automatic perception of component status by setting four No. 1 trigger switches and two No. 2 trigger switches: the lighting is automatically turned on when the detection head is extended, and the power is automatically turned on when the sub-display screen is unfolded, saving energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front perspective schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a rear perspective schematic diagram of the overall structure of the present invention;

[0026] Figure 3 This is a three-dimensional schematic diagram of the inner tube and the detection head of the present invention after extension;

[0027] Figure 4 This is a three-dimensional schematic diagram of the four connecting bars of the present invention after being unfolded;

[0028] Figure 5 It is a rear perspective schematic diagram of the detector body of the present invention;

[0029] Figure 6 Detailed connection diagram of the transmission motor, detection head and four connecting bars of the present invention;

[0030] Figure 7 For the present invention Figure 6 Exploded diagram of each component;

[0031] Figure 8 Schematic diagram of the cross section and explosion of the outer tube and inner tube of the present invention;

[0032] Figure 9 For the present invention Figure 8 A magnified schematic diagram of point A in the middle;

[0033] Figure 10 Schematic diagram of the explosion of the connecting ring and four connecting strips of the present invention.

[0034] In the figure: 1. Detector body; 2. Sound and light alarm; 3. Mounting bracket; 4. Detection head; 5. Sub-display screen; 6. Transmission rod; 7. Connecting block; 8. Telescopic motor; 9. Outer tube; 10. No. 1 lighting lamp; 11. Connecting ring; 12. No. 1 connecting strip; 13. Support plate; 14. No. 1 magnet; 15. No. 1 trigger switch; 16. Limit block; 17. Connecting plate; 18. Stop block; 19. Inner tube; 20. No. 2 lighting lamp; 21. No. 2 connecting strip; 22. No. 3 connecting strip; 23. No. 4 connecting strip; 24. Mounting cavity; 25. Transmission motor; 26. No. 2 trigger switch; 27. Threaded port; 28. Screw rod; 29. Lifting port; 30. Slide slot; 31. Light port; 32. Slider; 33. No. 2 magnet; 34. No. 3 magnet; 35. Main display screen. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] See also Figures 1-10 , an air pollution detection device, including a detector body 1, a main display screen 35 installed on the front side of the detector body 1, two mounting brackets 3 installed at the bottom of the detector body 1 and an audible and visual alarm 2 installed at the upper end of the detector body 1. The detector body 1, the main display screen 35, the mounting bracket 3 and the audible and visual alarm 2 are all existing mature technologies and are not described in detail here. The side of the detector body 1 away from the main display screen 35 is fixedly connected to a transmission motor 25 electrically connected to the internal power supply and controller of the detector body 1. The output shaft of the transmission motor 25 is fixedly connected to a transmission rod 6, and the other end of the transmission rod 6 is fixedly connected to a connecting block 7. By arranging the transmission motor 25 and the transmission rod 6, when it is necessary to detect the detector body 1 in multiple directions, the connecting block 7 and all components installed on the connecting block 7 can be rotated together to achieve a wider range of detection. The lower end of the connecting block 7 is fixedly connected to an outer tube 9, and the inner wall of the lower end of the connecting block 7 is also fixedly connected The telescopic motor 8 is electrically connected to the internal power supply and controller of the detector body 1, and a lifting port 29 is provided inside the outer tube 9. The output shaft of the telescopic motor 8 passes through the lifting port 29 and is fixedly connected to a screw rod 28. The inner wall of the lifting port 29 is slidably connected to the inner tube 19. The upper end of the inner tube 19 is provided with a threaded port 27 threadedly connected to the screw rod 28. The outer wall of the output shaft of the telescopic motor 8 is rotatably connected to the inner wall of the point where the outer tube 9 passes through. The lower end of the inner tube 19 passes through the outside of the lifting port 29 and is threadedly connected to the detection head 4. By setting the telescopic motor 8 and the screw rod 28, when a large range of detection is required, the inner tube 19 can be moved in the lifting port 29 of the outer tube 9 by the screw rod 28, thereby increasing the overall length, and then the detection head 4 installed at the lower end of the inner tube 19 can be extended a certain distance, thereby expanding the detection range. In addition, the detection head 4 is an existing mature technology, which includes a sensor, an air inlet, a flow control device, etc., to ensure that air can pass through the sensor at an appropriate flow rate for analysis.

[0037] As a preferred solution of the present invention, the outer wall of the transmission rod 6 is fixedly connected to the connecting ring 11, the outer wall of the connecting ring 11 is fixedly connected to the No. 1 connecting bar 12, and the outer wall of the connecting ring 11 is rotatably connected to the No. 2 connecting bar 21, the No. 3 connecting bar 22 and the No. 4 connecting bar 23. The other ends of the No. 1 connecting bar 12, the No. 2 connecting bar 21, the No. 3 connecting bar 22 and the No. 4 connecting bar 23 are all fixedly connected to a sub-display screen 5 that is electrically connected to the internal power supply and controller of the detector main body 1. The sub-display screen 5 has two areas: numerical display and concentration ranking.

[0038] More specifically, by providing a connecting ring 11 on the surface of the transmission rod 6, and providing connecting strips No. 1 12, No. 2 21, No. 3 22 and No. 4 23 on the outside of the connecting ring 11, and cooperating with four sub-display screens 5, while the transmission rod 6 rotates with the outer tube 9 for detection, connecting strips No. 1 12, No. 2 21, No. 3 22 and No. 4 23 will also be unfolded in sequence, and the dust concentrations detected in the four directions will be displayed. At the same time, the rankings of the concentrations in the four directions will be displayed on the four sub-display screens 5, which can assist the operator to quickly determine the direction of the dust source.

[0039] As a preferred solution of the present invention, two limit blocks 16 and two support plates 13 are fixedly connected to the side of the detector body 1 away from the main display screen 35. The two limit blocks 16 are respectively located on both sides of the No. 4 connecting bar 23, and the left sides of the two support plates 13 are fixedly connected with No. 1 magnets 14 that are respectively attracted to the No. 2 connecting bar 21 and the No. 3 connecting bar 22.

[0040] More specifically, by providing a limit block 16, the fourth connecting bar 23 can be prevented from being displaced when the connecting ring 11 rotates; by providing two support plates 13 and cooperating with two No. 1 magnets 14, when the No. 2 connecting bar 21 and the No. 3 connecting bar 22 follow the connecting ring 11 to rotate until they are against the support plates 13, they can be attracted and limited by the No. 1 magnet 14 to avoid loosening or rotation due to gravity.

[0041] As a preferred solution of the present invention, a stop block 18 is fixedly connected to one side of the No. 1 connecting bar 12 and is capable of pushing the No. 2 connecting bar 21 and the No. 3 connecting bar 22 .

[0042] More specifically, by providing the stop block 18 , the second connecting bar 21 and the third connecting bar 22 can be automatically pushed back to their original positions when the first connecting bar 12 returns.

[0043] As a preferred solution of the present invention, the inner walls of the No. 2 connecting bar 21 and the No. 3 connecting bar 22 close to one end of the connecting ring 11 are fixedly connected with the No. 3 magnet 34, and the outer wall of the connecting ring 11 is fixedly connected with the No. 2 magnet 33 that can be attracted to the two No. 3 magnets 34.

[0044] More specifically, by providing the third magnet 34 and the second magnet 33, when the connecting ring 11 rotates with the second connecting bar 21 and the third connecting bar 22, the second connecting bar 21 and the third connecting bar 22 will not shake or fall off due to the action of the second magnet 33 and the third magnet 34.

[0045] As a preferred solution of the present invention, four No. 1 trigger switches 15 are fixedly connected to the side of the detector body 1 away from the main display screen 35, which are respectively offset against the No. 1 connecting bar 12, the No. 2 connecting bar 21, the No. 3 connecting bar 22 and the No. 4 connecting bar 23 to realize the opening and closing of the four sub-display screens 5. The four No. 1 trigger switches 15 are all electrically connected to the internal power supply and controller of the detector body 1.

[0046] More specifically, by setting up four No. 1 trigger switches 15, after the No. 1 connecting bar 12, the No. 2 connecting bar 21 and the No. 3 connecting bar 22 move to the corresponding positions, the No. 1 trigger switch 15 can be automatically pressed and triggered, and the corresponding sub-display screen 5 is automatically started. When the No. 1 connecting bar 12, the No. 2 connecting bar 21 and the No. 3 connecting bar 22 are stored behind the No. 4 connecting bar 23, the sub-display screens 5 on the No. 1 connecting bar 12, the No. 2 connecting bar 21 and the No. 3 connecting bar 22 are all in the off state, saving power.

[0047] As a preferred solution of the present invention, two slide grooves 30 are opened on the inner wall of the outer tube 9, and two sliders 32 are fixedly connected to the upper end of the inner tube 19. The outer walls of the two sliders 32 are slidably connected to the inner walls of the two slide grooves 30 respectively.

[0048] More specifically, by providing the slide groove 30 and the slider 32 , when the screw rod 28 rotates, the inner tube 19 can be ensured to move up and down in the lifting opening 29 of the outer tube 9 while preventing the inner tube 19 from rotating and falling from the lifting opening 29 .

[0049] As a preferred embodiment of the present invention, a lamp holder 31 is provided on the inner wall of the outer tube 9, and a No. 1 lighting lamp 10 electrically connected to the internal power supply and controller of the detector body 1 is fixedly connected to the outer wall of the inner tube 19, and a No. 2 lighting lamp 20 electrically connected to the internal power supply and controller of the detector body 1 is fixedly connected to the outer wall of the inner tube 19, and the outer wall of the No. 2 lighting lamp 20 is slidably connected to the inner wall of the lamp holder 31.

[0050] More specifically, by setting up the No. 1 lighting lamp 10 and the No. 2 lighting lamp 20, when detecting dust in the area where the detector body 1 is located, the light of the No. 1 lighting lamp 10 and the No. 2 lighting lamp 20 can partially illuminate the area, forming a "Tyndall effect", which can more intuitively allow the operator to observe and understand the dust situation in the area at this moment, making it easier for the operator to take more appropriate response measures.

[0051] As a preferred solution of the present invention, the outer wall of the inner tube 19 at one end outside the outer tube 9 is fixedly connected to a connecting plate 17, and the connecting plate 17 and the adjacent side of the outer tube 9 are fixedly connected to a No. 2 trigger switch 26 that is electrically connected to the internal power supply and controller of the detector body 1.

[0052] More specifically, by providing the connecting plate 17 and the No. 2 trigger switch 26, when the inner tube 19 is retracted into the lifting port 29 of the outer tube 9, the two No. 2 trigger switches 26 offset each other, and the No. 1 lighting lamp 10 and the No. 2 lighting lamp 20 are in the off state. At the moment when the inner tube 19 begins to extend, the two No. 2 trigger switches 26 separate, and the No. 1 lighting lamp 10 and the No. 2 lighting lamp 20 can start to emit light, thereby saving electricity and reducing the probability of the No. 1 lighting lamp 10 and the No. 2 lighting lamp 20 being damaged due to long-term lighting.

[0053] As a preferred solution of the present invention, an installation cavity 24 is opened on the side of the detector body 1 away from the main display screen 35, the transmission motor 25 is located inside the installation cavity 24, and the outer wall of the transmission motor 25 is fixedly connected to the inner wall of the installation cavity 24, and the output shaft of the transmission motor 25 passes through the outside of the installation cavity 24.

[0054] More specifically, by providing the installation cavity 24, firstly, the transmission motor 25 can be accommodated, reducing the probability of the transmission motor 25 being exposed to the outside and damaged; secondly, due to the accommodation of the transmission motor 25, the total width between the four connecting strips, the outer tube 9 and the inner tube 19 and other components and the detector body 1 is reduced, thereby reducing the external space occupied.

[0055] like Figures 1 to 10 As shown, the air pollution detection device of the present invention can be used in the following steps:

[0056] First, use two mounting brackets 3 to match the external vertical or horizontal bracket to install the detector body 1 at the location where the test is required. Then connect the detector body 1 to the external main power supply. Finally, after debugging is completed, it can be officially put into use.

[0057] During routine testing, the inner tube 19 is stored in the lifting opening 29 of the outer tube 9, that is, the detection head 4 is at a fixed height, and the area can be tested in real time, and the detected value is synchronously displayed on the main display screen 35. When the detected value exceeds the set standard, the internal controller of the detector body 1 immediately turns on the sound and light alarm 2 to remind the operator;

[0058] At the moment when the sound and light alarm 2 is activated, the controller inside the detector body 1 will also start the telescopic motor 8 at the same time. After the telescopic motor 8 is started, the screw rod 28 connected to the output shaft of the telescopic motor 8 will rotate together, and at this time, the inner tube 19 will gradually extend toward the outside of the lifting opening 29 under the action of the screw rod 28. At the same time, the connecting plate 17 and the detection head 4 at the lower end of the inner tube 19 will also extend together;

[0059] While the detection head 4 is extending, it will further detect the dust concentration in the air below the detector body 1 and synchronize the detected value to the main display screen 35 and the sub-display screen 5 on the No. 1 connecting bar 12;

[0060] At the moment the connecting plate 17 moves, the two No. 2 trigger switches 26 between the connecting plate 17 and the outer tube 9 are separated. At this time, the No. 1 lighting lamp 10 and the No. 2 lighting lamp 20 on the outer side of the outer tube 9 and the inner tube 19 will start to light up at the same time to illuminate the air behind the detector body 1. With the help of the "Tyndall effect", the operator can quickly see and understand the current dust concentration so that he can take corresponding dust reduction or protective measures.

[0061] When the two sliders 32 of the inner tube 19 slide to the bottom of the chute 30, the telescopic motor 8 is turned off, and the inner tube 19 stops and does not extend further. At this time, the internal controller of the detector body 1 will turn on the transmission motor 25 again. At this time, the output shaft of the transmission motor 25 drives the transmission rod 6 to rotate. After the transmission rod 6 rotates, it can drive the connecting ring 11 and the connecting block 7 to rotate in the same direction.

[0062] When the connecting block 7 rotates, the outer tube 9, the inner tube 19 and the detection head 4 connected to the connecting block 7 will rotate together, so the bottom, left, top and right (in order of rotation) of the detector body 1 can be adjusted. Figure 2 、 Figure 3 and Figure 4 angles) are detected separately, thereby obtaining four different sets of data, and the four different data will be displayed on four sub-display screens 5 respectively. At the same time, the internal controller of the detector body 1 will automatically determine the numerical values of the four sets of data and display the rankings on the four sub-display screens 5. Because the closer to the direction of dust generation, the larger the numerical value, the approximate direction of the source can be quickly identified according to the numerical value, which is convenient for timely dust reduction measures;

[0063] Furthermore, when the connecting ring 11 rotates following the transmission rod 6, the fourth connecting bar 23 is held in place by the two stoppers 16 and does not rotate, so it remains in a vertically downward position. The first connecting bar 12 is fixedly connected to the connecting ring 11 and thus rotates directly following the connecting ring 11. The second and third connecting bars 21 and 22 also rotate together with the connecting ring 11 due to the action of the second and third magnets 33 and 34.

[0064] When the third connecting bar 22 rotates to 90 degrees, the side wall of the third connecting bar 22 is blocked by the support plate 13. At the same time, the third connecting bar 22 is also attracted by the first magnet 14 on the support plate 13. Then the connecting ring 11 continues to rotate, and the second magnet 33 on the connecting ring 11 and the third magnet 34 on the third connecting bar 22 are gradually dislocated until they are separated. However, because the third connecting bar 22 is attracted by the first magnet 14, the third connecting bar 22 will not loosen and rotate back. After that, the first connecting bar 12 and the second connecting bar 21 continue to move with the connecting ring 11. Then, the second connecting bar 21 rotates to 180 degrees and abuts against the other support plate 13, thereby causing the same situation as the third connecting bar 22. It will not be repeated here.

[0065] When the No. 2 connecting strip 21 also stops rotating, the No. 1 connecting strip 12 continues to rotate with the connecting ring 11 until it stops when it rotates to 270°. At this time, because the No. 1 connecting strip 12, the No. 2 connecting strip 21 and the No. 3 connecting strip 22 are respectively in contact with the other three No. 1 trigger switches 15 on the back of the detector body 1, the three sub-display screens 5 on the No. 1 connecting strip 12, the No. 2 connecting strip 21 and the No. 3 connecting strip 22 will also be energized (the No. 4 connecting strip 23 and the other No. 1 trigger switch 15 are always kept energized). Subsequently, the concentration values in the four directions can be displayed through the four sub-display screens 5 on the four connecting strips and automatically ranked, assisting the operator in quickly identifying;

[0066] When an operator intervenes or the controller displays a specific time (for example, ten minutes later), when the detection head 4, the No. 1 connecting bar 12, the No. 2 connecting bar 21 and the No. 3 connecting bar 22 need to be retracted, the controller inside the detector body 1 controls the retractable motor 8 and the transmission motor 25 to reverse, and the retractable motor 8 can retract the inner tube 19, the connecting plate 17 and the detection head 4 through the screw rod 28, and automatically turns off the No. 1 lighting lamp 10 and the No. 2 lighting lamp 20 after the No. 2 trigger switch 26 on the connecting plate 17 contacts the No. 2 trigger switch 26 on the outer tube 9;

[0067] After the transmission motor 25 is started, the detection head 4, the outer tube 9 and the inner tube 19 and other components will gradually return to their original positions, and the connecting ring 11 and the No. 1 connecting bar 12 fixed to its surface will also rotate back together. When the No. 1 connecting bar 12 rotates back to overlap with the No. 2 connecting bar 21, the block 18 on one side of the No. 1 connecting bar 12 will forcibly push the No. 2 connecting bar 21 to separate from the No. 1 magnet 14 on the support plate 13, and at this time the No. 3 magnet 34 on the No. 2 connecting bar 21 and the No. 2 magnet 33 on the connecting ring 11 will also be attracted, and then the same situation will occur when passing through the No. 3 connecting bar 22, until the No. 1 connecting bar 12, the No. 2 connecting bar 21 and the No. 3 connecting bar 22 overlap with the No. 4 connecting bar 23, thereby reducing the external space occupied and making the overall appearance more beautiful.

[0068] Finally, it should be noted that: in actual use, the transmission motor 25 and the telescopic motor 8 can be started after the sound and light alarm 2 sounds an alarm, or a specific time can be set in advance through the controller, such as three hours or half a day or other time to automatically start the transmission motor 25 and the telescopic motor 8 for regular inspection, without specific limitation.

[0069] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An air pollution detection device, comprising a detector body (1), a main display screen (35) mounted on the front side of the detector body (1), two mounting brackets (3) mounted on the bottom of the detector body (1), and an audible and visual alarm (2) mounted on the upper end of the detector body (1), characterized in that: A transmission motor (25) electrically connected to an internal power supply and a controller of the detector body (1) is fixedly connected to the side of the detector body (1) away from the main display screen (35), an output shaft of the transmission motor (25) is fixedly connected to a transmission rod (6), the other end of the transmission rod (6) is fixedly connected to a connecting block (7), the lower end of the connecting block (7) is fixedly connected to an outer tube (9), and the inner wall of the lower end of the connecting block (7) is also fixedly connected to a telescopic motor (8) electrically connected to an internal power supply and a controller of the detector body (1), the outer tube (9) is fixedly connected to the inner wall of the lower end of the connecting block (7), A lifting port (29) is provided inside the tube (9), the output shaft of the telescopic motor (8) passes through the lifting port (29) and is fixedly connected to a screw rod (28), the inner wall of the lifting port (29) is slidably connected to an inner tube (19), the upper end of the inner tube (19) is provided with a threaded port (27) threadedly connected to the screw rod (28), the outer wall of the output shaft of the telescopic motor (8) is rotatably connected to the inner wall of the penetration point of the outer tube (9), the lower end of the inner tube (19) passes through the outside of the lifting port (29) and is threadedly connected to a detection head (4).

2. An air pollution detection device according to claim 1, characterized in that: The outer wall of the transmission rod (6) is fixedly connected to a connecting ring (11), the outer wall of the connecting ring (11) is fixedly connected to a first connecting bar (12), and the outer wall of the connecting ring (11) is rotatably connected to a second connecting bar (21), a third connecting bar (22) and a fourth connecting bar (23), and the other ends of the first connecting bar (12), the second connecting bar (21), the third connecting bar (22) and the fourth connecting bar (23) are all fixedly connected to a sub-display screen (5) electrically connected to an internal power supply and a controller of the detector body (1), and the sub-display screen (5) has two areas: a numerical display and a concentration ranking.

3. An air pollution detection device according to claim 2, characterized in that: Two limit blocks (16) and two support plates (13) are fixedly connected to the side of the detector body (1) away from the main display screen (35), the two limit blocks (16) are respectively located on both sides of the fourth connecting bar (23), and the left sides of the two support plates (13) are fixedly connected to the first magnet (14) respectively attracted to the second connecting bar (21) and the third connecting bar (22).

4. An air pollution detection device according to claim 3, characterized in that: One side of the No. 1 connecting bar (12) is fixedly connected with a stop block (18) capable of pushing the No. 2 connecting bar (21) and the No. 3 connecting bar (22).

5. An air pollution detection device according to claim 4, characterized in that: The inner walls of the No. 2 connecting bar (21) and the No. 3 connecting bar (22) close to one end of the connecting ring (11) are both fixedly connected with a No. 3 magnet (34), and the outer wall of the connecting ring (11) is fixedly connected with a No. 2 magnet (33) that can be attracted to the two No. 3 magnets (34).

6. An air pollution detection device according to claim 5, characterized in that: Four trigger switches (15) are fixedly connected to one side of the detector body (1) away from the main display screen (35), and are respectively abutted against a first connecting bar (12), a second connecting bar (21), a third connecting bar (22), and a fourth connecting bar (23) to realize opening and closing of the four sub-display screens (5). The four trigger switches (15) are all electrically connected to an internal power supply and a controller of the detector body (1).

7. An air pollution detection device according to claim 6, characterized in that: Two chute grooves (30) are provided on the inner wall of the outer tube (9), and two sliders (32) are fixedly connected to the upper end of the inner tube (19), and the outer walls of the two sliders (32) are slidably connected to the inner walls of the two chute grooves (30) respectively.

8. An air pollution detection device according to claim 7, characterized in that: The inner wall of the outer tube (9) is provided with a lamp holder (31), and the outer wall of the outer tube (9) is fixedly connected to a first lighting lamp (10) electrically connected to an internal power supply and a controller of the detector body (1), and the outer wall of the inner tube (19) is fixedly connected to a second lighting lamp (20) electrically connected to an internal power supply and a controller of the detector body (1), and the outer wall of the second lighting lamp (20) is slidably connected to the inner wall of the lamp holder (31).

9. The air pollution detection device according to claim 8, characterized in that: The outer wall of the inner tube (19) at one end outside the outer tube (9) is fixedly connected to a connecting plate (17), and a second trigger switch (26) electrically connected to the internal power supply and controller of the detector body (1) is fixedly connected to the adjacent side of the connecting plate (17) and the outer tube (9).

10. An air pollution detection device according to claim 9, characterized in that: A mounting cavity (24) is provided on a side of the detector body (1) away from the main display screen (35), the transmission motor (25) is located inside the mounting cavity (24), and the outer wall of the transmission motor (25) is fixedly connected to the inner wall of the mounting cavity (24), and the output shaft of the transmission motor (25) extends to the outside of the mounting cavity (24).

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