Chicken farm air quality monitoring device and monitoring method thereof

Abstract

The invention relates to a chicken farm air quality monitoring device and method applied to the field of air quality monitoring, and the device comprises an outer cylinder with an exhaust pipe penetrating through the surface, the inner wall of the outer cylinder is provided with a filtering assembly, the top wall of the outer cylinder is provided with a suction fan, and the inner wall of the outer cylinder is slidably provided with a follow-up disc; a purification part is installed at the bottom of the follow-up disc through a connecting rod, a winding rod is rotatably installed on the inner wall of the extension groove, a winding part is connected to the surface of the winding rod in a winding mode, a rotating motor is installed in each cavity, and the winding part is composed of a plurality of connecting ropes arranged at intervals and a purification assembly. The purification assembly comprises a waterproof breathable film and an activated carbon non-woven fabric mounted at the top of the waterproof breathable film, the purification piece can be used for purifying passing gas, so that the purified gas can scour residual gas and particulate matters after the last round of detection, the influence of sample residues between the two rounds of detection operation is reduced to the minimum, and the detection efficiency is improved. And the detection accuracy is ensured.

Description

Technical Field

[0001] The invention relates to an air quality monitoring device for a chicken farm, and in particular to an air quality monitoring device for a chicken farm applied in the field of air quality monitoring and a monitoring method thereof. Background Art

[0002] Air quality monitoring in chicken farms is of great significance in ensuring the health of chickens, improving production efficiency, enhancing market competitiveness, promoting sustainable development and supporting scientific decision-making. By monitoring the concentration of harmful gases such as hydrogen sulfide and ammonia inside the chicken farm and indicators such as air humidity, it can provide a reference for ventilation and humidity control in the chicken farm, so as to reduce the casualty rate of chickens.

[0003] The specification of Chinese invention patent CN117554570A discloses a real-time air quality monitoring device for a chicken farm and its implementation method. The invention has a small structure and a modular design, and can independently set parameter thresholds; it has an integrated design and is easy to install; it uses a 32-bit high-speed processing core chip and a high-sensitivity sensor with fast response time, high resolution, and good linearity; it is equipped with a camera for recording and collecting evidence; it uses IoT edge computing and local memory to store data to achieve the function of resuming transmission after network disconnection; it is equipped with a backup battery to keep the equipment working normally, and it can monitor the air environment in the chicken farm in real time.

[0004] When the above-mentioned air quality monitoring equipment is working, it uses a winding device to achieve lifting and lowering processing, and then detects the air quality at different heights. However, in the actual operation process, after the previous round of detection is completed, the sample gas will remain on the inner wall of the detection room and mix with the next round of sample gas, which will interfere with the next round of detection results and make it difficult to ensure the detection accuracy. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is how to effectively clean up the residual harmful gases between two rounds of detection when detecting the air quality inside a chicken farm, thereby ensuring the accuracy of the detection results.

[0006] In order to solve the above problems, the present invention provides an air quality monitoring device for a chicken farm, comprising an outer cylinder with an exhaust pipe installed through the surface, a one-way valve installed inside the exhaust pipe, a filter assembly installed on the inner wall of the outer cylinder, a suction fan installed on the top wall of the outer cylinder, a follower disc slidably installed on the inner wall of the outer cylinder, and a sensor integrated block installed on the bottom of the follower disc, a through hole is provided inside the follower disc, a purification member is installed on the bottom of the follower disc through a connecting rod, a rectangular groove is provided inside the purification member, extension grooves are provided on the inner walls of both sides of the rectangular groove, a winding rod is rotatably installed on the inner wall of the extension groove, a winding member is wound around the surface of the winding rod, two symmetrically arranged cavities are provided inside the purification member, a rotating motor is installed inside each cavity, one of the rotating motors is a winding motor, and the other rotating motor is a reset motor, and the output ends of the two rotating motors are respectively connected to the ends of the two winding rods through bevel gear sets;

[0007] The winding piece is composed of a plurality of connecting cables and purification components arranged at intervals. The purification component includes a waterproof breathable membrane and an activated carbon non-woven fabric installed on the top of the waterproof breathable membrane. The length of a single connecting cable and a single purification component is not less than the cross-sectional length of the rectangular groove.

[0008] In the above-mentioned chicken farm air quality monitoring device, the purification component can be used to purify the passing gas, so that the purified gas can flush out the residual gas and particulate matter after the previous round of detection, so that the sample residual effect between the two rounds of detection operations is reduced to a minimum, thereby ensuring the accuracy of the detection.

[0009] As a further improvement of the present application, a strip groove penetrating the extension groove is provided on the top of the purification element, and a sealing plate with a handle is embedded and installed inside the strip groove.

[0010] As a further improvement of the present application, the filter assembly includes an outer ring whose top surface is in contact with the bottom surface of the outer cylinder, a conical filter screen with an internal hollow design is installed inside the outer ring, a servo motor is installed inside the conical filter screen, the output end of the servo motor is connected to a rotating shaft, and the surface of the rotating shaft is hinged with a No. 2 cleaning block overlapped on the surface of the conical filter screen, and the surface of the rotating shaft is connected to a No. 1 cleaning block whose top surface is in contact with the bottom surface of the purification element through a round rod.

[0011] As a further improvement of the present application, a horizontal plate is installed on the inner wall of the rectangular groove near the bottom end, the bottom of the horizontal plate is rotatably connected to the top of the rotating shaft, the top of the No. 2 cleaning block is movably connected to a magnetic rod, an electromagnetic rod is installed on the surface of the No. 1 cleaning block, and the electromagnetic rod and the magnetic rod are connected by a spring.

[0012] As a further improvement of the present application, the electromagnetic rod and the magnetic moving rod are located inside the spring, and the electromagnetic rod and the magnetic moving rod are located on the same vertical axis, and the electromagnetic rod and the magnetic moving rod attract each other.

[0013] As a further improvement of the present application, a driving motor located between the follower disk and the suction fan is installed on the inner wall of the outer cylinder through a bracket, and the output end of the driving motor is connected to a rotating gear, a lifting rack is meshingly installed on the surface of the rotating gear, and the tail end of the lifting rack is fixedly connected to the top surface of the follower disk.

[0014] As a further improvement of the present application, the sensor integrated block includes a smoke sensor, an ammonia sensor, a temperature and humidity sensor, an odor sensor and a particulate matter sensor, and the conical filter is composed of a conical filter and a flat filter, wherein the filter mesh size of the flat filter is smaller than the filter mesh size of the conical filter.

[0015] As another improvement of the present application, a water absorbing member located between the winding rod and the rectangular groove is installed on the inner wall of the extension groove, and the water absorbing member is in contact with the bottom surface of the winding member, and the water absorbing member is made of highly water-absorbent material.

[0016] A monitoring method, using a chicken farm air quality monitoring device, includes the following working steps:

[0017] S1, start the suction fan to drive the gas inside the outer cylinder to pass through the filter assembly for filtration and interception, and then the gas contacts the sensor integrated block through the rectangular groove to complete the round of detection;

[0018] S2. After the test is completed, the gas is discharged from the outer cylinder through the through hole and the exhaust pipe, and then the winding motor is started to drive the continuous rope originally located in the rectangular groove to be wound, and the winding piece is pulled into the rectangular groove. After the sucked gas is intercepted and purified by the winding piece, the purified gas will flush the space above the follower disk to reduce the residual gas of the previous round of detection;

[0019] S3, the suction fan stops, and the servo motor is started to drive the rotating shaft and the No. 1 cleaning block and the No. 2 cleaning block to rotate;

[0020] S4, start the driving motor, indirectly drive the outer ring to descend to the bottom of the outer cylinder, and then start the electromagnetic rod intermittently for several times to drive the No. 2 cleaning block to knock and vibrate the filter assembly to clean the dust on the surface of the filter assembly.

[0021] To sum up, the purification component can be used to purify the passing gas, so that the purified gas can flush out the residual gas and particulate matter after the previous round of detection, so that the impact of sample residue between the two rounds of detection operations is reduced to a minimum. Afterwards, with the cooperation of the driving motor, electromagnetic rod and magnetic dynamic rod, the gas and particulate matter remaining in the lower space of the purification component can be cleaned, and the interception blockage on the surface of the filter component can be effectively cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1This is a schematic diagram of the overall structure of the first and second implementation modes of the present application;

[0023] Figure 2 This is a schematic diagram of the internal structure of the outer cylinder of the first and second embodiments of the present application;

[0024] Figure 3 This is a diagram showing the internal structure of the follower disk and the purification element of the first and second embodiments of the present application;

[0025] Figure 4 This is a schematic diagram of the connection between the rotating motor and the winding rod of the two rectangular slots in the purification element of the first and second embodiments of the present application;

[0026] Figure 5 This is a schematic diagram of the winding components of the first and second embodiments of the present application;

[0027] Figure 6 This is an installation diagram of the first cleaning block and the second cleaning block of the first and second implementation modes of the present application;

[0028] Figure 7 A schematic diagram of the state of gas purification and flushing in the first and second embodiments of the present application;

[0029] Figure 8 This is a state diagram of the lifting of the second cleaning block in the first and second implementation modes of the present application;

[0030] Fig. 9 It is a schematic diagram of the state in which the residual water vapor on the surface of the waterproof breathable membrane is transferred to the activated carbon non-woven fabric when the purification assembly is rolled up when no moisture absorbing member is provided in the first and second embodiments of the present application;

[0031] Fig.10 This is a schematic diagram of the installation of the water absorbing member of the first and second embodiments of the present application;

[0032] Fig.11 This is a working state diagram of the water absorbing member of the first and second embodiments of the present application;

[0033] Description of the numbers in the figure:

[0034] 1. Outer cylinder; 2. Filter assembly; 21. Outer ring; 22. Cone filter; 3. Exhaust pipe; 4. Suction fan; 5. Driving motor; 51. Rotating gear; 52. Lifting rack; 6. Follow-up plate; 7. Purification component; 71. Rotating motor; 72. Sealing plate; 73. Winding component; 731. Continuous rope; 732. Activated carbon non-woven fabric; 733. Water-proof breathable membrane; 74. Water-absorbing component; 8. Cleaning block No. 1; 9. Cleaning block No. 2; 10. Rotating shaft; 11. Servo motor; 12. Electromagnetic rod; 13. Magnetic moving rod. DETAILED DESCRIPTION

[0035] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0036] The first implementation method:

[0037] Figure 1-Figure 4 The invention discloses an air quality monitoring device for a chicken farm, comprising an outer cylinder 1 with an exhaust pipe 3 installed on the surface, a one-way valve installed inside the exhaust pipe 3, a filter assembly 2 installed on the inner wall of the outer cylinder 1, a suction fan 4 installed on the top wall of the outer cylinder 1, a follower disc 6 slidably installed on the inner wall of the outer cylinder 1, and a sensor integrated block installed on the bottom of the follower disc 6, a through hole penetrating the inside of the follower disc 6, a purification member 7 installed on the bottom of the follower disc 6 through a connecting rod, a rectangular groove is provided inside the purification member 7, and extension grooves are provided on the inner walls of both sides of the rectangular groove, a winding rod is rotatably installed on the inner wall of the extension groove, a winding member 73 is wound around the surface of the winding rod, two symmetrically arranged cavities are provided inside the purification member 7, a rotary motor 71 is installed inside each cavity, one of the rotary motors 71 is a winding motor, and the other rotary motor 71 is a reset motor, and the output ends of the two rotary motors 71 are respectively connected to the ends of the two winding rods through bevel gear sets;

[0038] The winding member 73 is composed of a plurality of spaced-apart connecting cables 731 and a purification component. The purification component includes a waterproof breathable membrane 733 and an activated carbon non-woven fabric 732 installed on the top of the waterproof breathable membrane 733. The length of a single connecting cable 731 and a single purification component is not less than the cross-sectional length of the rectangular groove. The sensor integrated block includes a smoke sensor, an ammonia sensor, a temperature and humidity sensor, an odor sensor and a particulate matter sensor.

[0039] Specifically, when the air quality monitoring operation in the chicken farm is carried out, the suction fan 4 is started to suck the gas outside the outer tube 1, so that it passes through the filter component 2 to intercept the large particles of dust carried in the gas, and then the gas contacts the sensor integrated block at the bottom of the follower disk 6 through the rectangular groove to perform corresponding gas quality monitoring, and then the gas is transferred to the top of the follower disk 6 through the through hole, and then discharged from the inside of the outer tube 1 in one direction through the exhaust pipe 3.

[0040] After a round of testing, the suction fan 4 continues to run, and the winding motor is started to drive the connecting rope 731 originally in the rectangular groove to reel up, and drive the purification component at one end of the connecting rope 731 to stretch out and fill the gap in the rectangular groove. When the gas passes through the purification component, the water vapor in the gas is intercepted by the waterproof and breathable membrane 733, and the harmful gas is adsorbed and purified by the activated carbon non-woven fabric 732 (such as Figure 7 As shown), the gas passing through the purification component is in a dry and clean state, and the residual gas above the purification component 7 can be flushed and diluted until the content of the harmful gas remaining above the purification component 7 is reduced to a reasonable level.

[0041] After the purification is completed, the reset motor is started to recycle the purification components after adsorption and reel them up, waiting for the next round of detection to continue purification and adsorption, so that the connecting rope 731 returns to the rectangular groove to prepare for the passage of the next round of detection gas.

[0042] A strip groove penetrating the extension groove is provided on the top of the purification member 7, and a blocking plate 72 with a handle is fitted inside the strip groove.

[0043] Specifically, the blocking plate 72 is removed, and the winding member 73 on the surface of the winding rod in the two extension rods can be replaced accordingly, and the blocking plate 72 can be re-sealed after the update.

[0044] Figure 2-Figure 6 As shown, 3 and the filter assembly 2 include an outer ring 21 whose top surface is in contact with the bottom surface of the outer cylinder 1, a conical filter screen 22 with an internal hollow design is installed inside the outer ring 21, a servo motor 11 is installed inside the conical filter screen 22, the output end of the servo motor 11 is connected to a rotating shaft 10, and the surface of the rotating shaft 10 is hinged with a No. 2 cleaning block 9 overlapped on the surface of the conical filter screen 22, and the surface of the rotating shaft 10 is connected to a No. 1 cleaning block 8 whose top surface is in contact with the bottom surface of the purification element 7 through a round rod.

[0045] A horizontal plate is installed near the bottom of the inner wall of the rectangular groove, and the bottom of the horizontal plate is rotatably connected to the top of the rotating shaft 10. A magnetic rod 13 is movably connected to the top of the No. 2 cleaning block 9. An electromagnetic rod 12 is installed on the surface of the No. 1 cleaning block 8, and the electromagnetic rod 12 and the magnetic rod 13 are connected by a spring.

[0046] The electromagnetic rod 12 and the magnetic rod 13 are located inside the spring, and the electromagnetic rod 12 and the magnetic rod 13 are located on the same vertical axis, and the electromagnetic rod 12 and the magnetic rod 13 attract each other.

[0047] Figure 1 As shown, a driving motor 5 located between the follower disk 6 and the suction fan 4 is installed on the inner wall of the outer cylinder 1 through a bracket, and the output end of the driving motor 5 is connected to a rotating gear 51, and a lifting rack 52 is meshingly installed on the surface of the rotating gear 51, and the tail end of the lifting rack 52 is fixedly connected to the top surface of the follower disk 6.

[0048] Specifically, after the purification component has been working for a period of time, the surface of the filter component 2 may be blocked, and the gas entering the outer cylinder 1 contains a small amount of particulate matter (PM2.5 particles, the diameter of PM2.5 particles is very small, only 2.5 microns or less, and can pass through the one-way valve relatively smoothly), which also needs to be cleaned. At this time, the flushing of the gas after filtration by the purification component can flush and clean the particulate matter and residual gas in the space above the purification component 7, and the particulate matter and residual gas remaining in the space below the purification component 7 are scraped off as the purification component 7 descends (the drive motor 5 is started, and the follower disk 6 and the purification component 7 can be driven to descend with the cooperation of the rotating gear 51 and the lifting rack 52), and the particulate matter on the inner wall of the outer cylinder 1 below the purification component 7 is scraped off, and as the servo motor 11 rotates, the No. 1 cleaning block 8 and the No. 2 cleaning block 9 can be driven to rotate together, and the particulate matter remaining at the bottom of the purification component 7 is scraped off, so that it falls to the surface of the conical filter screen.

[0049] As the filter assembly 2 descends, the outer ring 21 will fall below the outer cylinder 1, so that the conical filter screen is exposed inside the outer cylinder 1. At this time, the electromagnetic rod 12 is started intermittently multiple times to drive the magnetic rod 13 to rise and fall multiple times, and the entire filter assembly 2 is knocked (such as Figure 8 As shown in the figure), the dust falling on the conical filter can be shaken and rolled down along the slope, and the surface of the plane filter can be vibrated and cleaned to prevent the residual gas on the surface of the plane filter from being subsequently sucked into the outer cylinder 1 and affecting the detection results.

[0050] The cone filter 22 is composed of a cone filter and a flat filter, wherein the filter mesh size of the flat filter is smaller than the filter mesh size of the cone filter.

[0051] Specifically, the particles falling on the surface of the conical filter screen enter the outer cylinder 1 through the plane filter screen. Due to the difference in filtration diameter between the plane filter screen and the conical filter screen, the particles falling on the surface of the conical filter screen are intercepted on the surface of the conical filter screen.

[0052] Fig.10 As shown, the inner wall of the extension groove is installed with a water absorbing member 74 located between the winding rod and the rectangular groove, and the water absorbing member 74 is in contact with the bottom surface of the winding member 73, and the water absorbing member 74 is made of highly water-absorbent material.

[0053] Specifically, when the purification component is recycled, water vapor remains on the surface of the waterproof breathable membrane 733, and when it is rolled up, it will contact the activated carbon non-woven fabric 732 on the outer ring, so that when the activated carbon non-woven fabric 732 is stretched and used again, the water vapor will contact the sensor integrated block, causing water vapor to remain (such as Fig. 9 As shown), a water absorbing member 74 is designed to absorb and dry the water vapor remaining on the surface of the waterproof breathable membrane 733 (as shown in FIG. Fig.11As shown), there is no water vapor remaining on the surface of the rolled activated carbon non-woven fabric 732, thereby ensuring the detection accuracy.

[0054] The second implementation method:

[0055] A monitoring method, using a chicken farm air quality monitoring device, includes the following working steps:

[0056] S1, start the suction fan 4, drive the internal gas of the outer tube 1 to pass through the filter assembly 2 for filtration and interception, and then the gas contacts the sensor integrated block through the rectangular groove to complete the round of detection;

[0057] S2. After the detection is completed, the gas is discharged from the outer tube 1 through the through hole and the exhaust pipe 3, and then the winding motor is started to drive the connecting rope 731 originally located in the rectangular groove to be wound, and the winding member 73 is pulled into the rectangular groove. After the sucked gas is intercepted and purified by the winding member 73, the purified gas will flush the space above the follower disk 6 to reduce the residual gas of the previous round of detection;

[0058] S3, the suction fan 4 stops, and the servo motor 11 is started to drive the rotating shaft 10 and the first cleaning block 8 and the second cleaning block 9 to rotate;

[0059] S4, start the driving motor 5, indirectly drive the outer ring 21 to descend to the bottom of the outer tube 1, and then start the electromagnetic rod 12 intermittently for multiple times to drive the second cleaning block 9 to knock and vibrate the filter component 2 to clean the dust on the surface of the filter component 2.

[0060] In summary, the present application utilizes the purification component 7 to purify the passing gas, so that the purified gas can flush out the residual gas and particulate matter after the previous round of detection, so that the impact of sample residue between two rounds of detection operations is reduced to a minimum. Thereafter, with the cooperation of the drive motor 5, the electromagnetic rod 12 and the magnetic rod 13, the gas and particulate matter remaining in the lower space of the purification component 7 can be cleaned, and the interception blockage on the surface of the filter component 2 can be effectively cleaned.

[0061] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A chicken farm air quality monitoring device, comprising an outer cylinder (1) with an exhaust pipe (3) installed through the surface, and a one-way valve installed inside the exhaust pipe (3), characterized in that: The inner wall of the outer cylinder (1) is provided with a filter assembly (2), the top wall of the outer cylinder (1) is provided with a suction fan (4), the inner wall of the outer cylinder (1) is slidably provided with a follower disc (6), and the bottom of the follower disc (6) is provided with a sensor integrated block, the inside of the follower disc (6) is provided with a through hole, the bottom of the follower disc (6) is provided with a purification member (7) through a connecting rod, the inside of the purification member (7) is provided with a rectangular groove, the inner walls of both sides of the rectangular groove are provided with extension grooves, the inner wall of the extension groove is rotatably provided with a winding rod, the surface of the winding rod is wound with a winding member (73), the inside of the purification member (7) is provided with two symmetrically arranged cavities, and a rotating motor (71) is installed inside each of the cavities, one of the rotating motors (71) is a winding motor, and the other rotating motor (71) is a reset motor, and the output ends of the two rotating motors (71) are respectively connected to the ends of the two winding rods through a bevel gear set; The winding member (73) is composed of a plurality of spaced-apart connecting cables (731) and a purification component, wherein the purification component comprises a waterproof breathable membrane (733) and an activated carbon non-woven fabric (732) installed on the top of the waterproof breathable membrane (733), and the length of a single connecting cable (731) and a single purification component is not less than the cross-sectional length of the rectangular groove.

2. The chicken farm air quality monitoring device according to claim 1, characterized in that: The top of the purification element (7) is provided with a strip groove penetrating the extension groove, and a blocking plate (72) with a handle is embedded and installed inside the strip groove.

3. The chicken farm air quality monitoring device according to claim 2 is characterized in that: The filter assembly (2) comprises an outer ring (21) whose top surface is in contact with the bottom surface of the outer cylinder (1); a conical filter screen (22) with a hollow interior is installed inside the outer ring (21); a servo motor (11) is installed inside the conical filter screen (22); an output end of the servo motor (11) is connected to a rotating shaft (10); a second cleaning block (9) overlapped on the surface of the conical filter screen (22) is hingedly connected to the surface of the rotating shaft (10); and a first cleaning block (8) whose top surface is in contact with the bottom surface of the purification element (7) is connected to the surface of the rotating shaft (10) via a round rod.

4. The chicken farm air quality monitoring device according to claim 3 is characterized in that: A transverse plate is installed near the bottom end of the inner wall of the rectangular groove, and the bottom of the transverse plate is rotatably connected to the top end of the rotating shaft (10). The top of the No. 2 cleaning block (9) is movably connected to a magnetic rod (13). An electromagnetic rod (12) is installed on the surface of the No. 1 cleaning block (8), and the electromagnetic rod (12) and the magnetic rod (13) are connected via a spring.

5. The chicken farm air quality monitoring device according to claim 4 is characterized in that: The electromagnetic rod (12) and the magnetic moving rod (13) are located inside the spring, and the electromagnetic rod (12) and the magnetic moving rod (13) are located on the same vertical axis, and the electromagnetic rod (12) and the magnetic moving rod (13) attract each other.

6. A chicken farm air quality monitoring device according to claim 5, characterized in that: A driving motor (5) located between the follower disk (6) and the suction fan (4) is mounted on the inner wall of the outer cylinder (1) through a bracket, and the output end of the driving motor (5) is connected to a rotating gear (51), and a lifting rack (52) is meshingly mounted on the surface of the rotating gear (51), and the rear end of the lifting rack (52) is fixedly connected to the top surface of the follower disk (6).

7. The chicken farm air quality monitoring device according to claim 6 is characterized in that: The sensor integrated block comprises a smoke sensor, an ammonia sensor, a temperature and humidity sensor, an odor sensor and a particle sensor, and the cone filter (22) is composed of a cone filter and a flat filter, wherein the filter mesh size of the flat filter is smaller than the filter mesh size of the cone filter.

8. The chicken farm air quality monitoring device according to claim 7, characterized in that: The inner wall of the extension groove is provided with a water absorbing member (74) located between the winding rod and the rectangular groove, and the water absorbing member (74) is in contact with the bottom surface of the winding member (73), and the water absorbing member (74) is made of a highly water-absorbent material.

9. A monitoring method, using the chicken farm air quality monitoring device according to claim 8, characterized in that: The following steps are included: S1, start the suction fan (4), drive the gas inside the outer cylinder (1) to pass through the filter assembly (2) for filtration and interception, and then the gas contacts the sensor integrated block through the rectangular groove, thus completing the round of detection; S2. After the detection is completed, the gas is discharged from the interior of the outer cylinder (1) through the through hole and the exhaust pipe (3), and then the winding motor is started to drive the connecting rope (731) originally located in the rectangular groove to be wound, and the winding member (73) is pulled into the rectangular groove. After the sucked gas is intercepted and purified by the winding member (73), the purified gas will flush the space above the follower disk (6), thereby reducing the residual gas from the previous round of detection; S3, the suction fan (4) stops, and the servo motor (11) is started to drive the rotating shaft (10) and the first cleaning block (8) and the second cleaning block (9) to rotate; S4, starting the driving motor (5), indirectly driving the outer ring (21) to descend to the bottom of the outer cylinder (1), and then intermittently starting the electromagnetic rod (12) for multiple times, driving the second cleaning block (9) to knock and vibrate the filter assembly (2), thereby cleaning the dust on the surface of the filter assembly (2).

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