Beta-ray particulate matter concentration monitor

Abstract

The utility model relates to the technical field of concentration monitor equipment, and discloses a beta-ray particulate matter concentration monitor which comprises a detection box, the left side of the top of the outer wall of the detection box is communicated with an air inlet pipe, and the bottom of the outer wall of the air inlet pipe penetrates through the detection box and is communicated with a three-way one-way pipe. The right side of the three-way one-way pipe communicates with a syringe, the left side of the inner wall of the detection box is fixedly connected with an electric telescopic rod, and one end of the electric telescopic rod is fixedly connected with an extrusion column. According to the utility model, the electric telescopic rod is started to enable the extrusion column to extract air in the injection cylinder, an air sample is extracted through the three-way one-way pipe, the extrusion column moves and extrudes air, the air is uniformly sprayed on the filter paper through the conical disperser, the beta-ray instrument emits beta rays, the beta-ray receiver records intensity, and the filter paper vibrates through the ultrasonic instrument to enable particulate matters to fall off. The fan exhausts air and blows the air to the dispersing air outlet block, and the filter paper can be cleaned for reuse.

Description

Technical Field

[0001] This utility model relates to the field of concentration monitoring equipment technology, and in particular to a beta-ray particulate matter concentration monitoring instrument. Background Technology

[0002] A beta-ray particulate matter concentration monitor is an instrument used to measure the concentration of particulate matter in the air. It uses the attenuation characteristics of beta rays to detect particulate matter. Its working principle is to project beta rays into the airflow path. When the rays pass through the air sample, some of them are absorbed or scattered by the particulate matter, which reduces the intensity of the rays. The concentration of particulate matter in the air can be calculated based on the change in ray intensity.

[0003] A search revealed Chinese Patent Publication No. CN219841371U, which discloses a gas particulate matter concentration monitor based on the β-ray method. This device, belonging to the technical field of gas particulate matter concentration monitors, includes a sliding block, a controller, an installation mechanism, a lifting mechanism, and a β-ray particulate matter detector. The installation mechanism allows for quick installation to various locations and adapts to different installation environments, improving its flexibility. The lifting mechanism, with its rotating connecting shaft, raises and lowers the β-ray particulate matter detector, allowing for minute height adjustments to improve accuracy in detecting particulate matter concentration at specified heights. However, in practical use, since the detection relies on filter paper to adsorb particulate matter, the filter paper roll needs frequent replacement, increasing costs. If the filter paper cannot be replaced promptly, the device cannot perform new detections. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a beta-ray particulate matter concentration monitor, which aims to improve the problems of the need for timely replacement of filter paper rolls and high costs in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a beta-ray particulate matter concentration monitor, comprising a detection chamber, an air inlet pipe connected to the top left side of the outer wall of the detection chamber, a three-way one-way pipe penetrating the bottom of the outer wall of the air inlet pipe and connected to it, an injection cylinder connected to the right side of the three-way one-way pipe, an electric telescopic rod fixedly connected to the left side of the inner wall of the detection chamber, a squeezing column fixedly connected to one end of the electric telescopic rod, the squeezing column being slidably connected to the injection cylinder, a limit plate fixedly connected to the rear side of the inner wall of the detection chamber, and a transmission assembly provided on the outer wall of the limit plate. The device includes a three-way one-way pipe with a conical diffuser at its bottom, an exhaust pipe at the bottom of the conical diffuser, and an exhaust pipe extending through the rear of the detection chamber. A beta-ray instrument is fixedly connected to the middle of the rear of the inner wall of the detection chamber, and a beta-ray receiver is fixedly connected to the bottom of the rear of the inner wall of the detection chamber. A buffer plate is fixedly connected to the bottom right side of the inner wall of the detection chamber, and an ultrasonic instrument is fixedly connected to the left side of the buffer plate. An auxiliary column is rotatably connected to the bottom right side of the inner wall of the detection chamber, and a blowing assembly is provided on the right side of the inner wall of the detection chamber. A cleaning mechanism is provided on the inner wall of the air inlet pipe.

[0006] The above technical solution works as follows: When testing is required, the electric telescopic rod is activated to drive the squeezing column to draw air from the injection cylinder. This air sample is then drawn through the three-way one-way tube and the air inlet pipe. After the squeezing column moves a certain distance, the electric telescopic rod is retracted, causing the squeezing column to expel the air from the injection cylinder. Under the action of the three-way one-way tube, the air enters the conical disperser and is evenly sprayed onto the filter paper. Before spraying, a beta-ray instrument emits beta rays onto the filter paper, and the intensity of the emitted beta rays is recorded by a beta-ray receiver. After the filter paper is sprayed with particulate matter, the servo motor in the transmission assembly drives the rotating column to rotate. Driven by the transparent belt, the rotating column on the other side also rotates. Then, under the action of sprocket two and chain two, the winding column is driven to rotate. At the same time, under the action of sprocket one and chain one, the filter paper roll is wound up, thereby moving the filter paper containing particulate matter to the bottom of the β-ray instrument. Then, the β-ray instrument and β-ray receiver are activated again to record the β-ray intensity. The concentration of particulate matter is calculated by recording from both sides. After the detection is completed, the filter paper continues to move. When it reaches the top of the buffer plate, the ultrasonic instrument is activated to vibrate and drop the particulate matter. Under the action of the blowing assembly, the fan draws in air. Under the action of the dustproof exhaust plate, the outside air is filtered and blown into the dispersion block and onto the filter paper, thereby further cleaning the filter paper and enabling it to be reused.

[0007] As a further description of the above technical solution:

[0008] The cleaning mechanism includes a motor, which is fixedly connected to the top of the inner wall of the air intake pipe. A rotating plate is fixedly connected to one end of the motor, and a cleaning brush is fixedly connected to the bottom of the rotating plate. Scrapers are fixedly connected to both the left and right sides of the cleaning brush. An inclined groove is formed at the bottom of the inner wall of the air intake pipe. A collection box is fixedly connected to the right side of the outer wall of the air intake pipe. The left side of the outer wall of the collection box passes through the air intake pipe and communicates with the inclined groove.

[0009] The above technical solution works as follows: when a sample is taken, the motor is started to drive the rotating plate to rotate, and at the same time, the cleaning brush is driven to clean the inner wall of the air inlet pipe. Under the action of centrifugation, the filtered particles fall into the inclined trough, and under the action of the scraper, the particles in the inclined trough are scraped and concentrated, and finally fall into the collection box, thereby completing the cleaning of the cutter surface in the air inlet pipe, thus ensuring that the cutter surface will not be blocked.

[0010] As a further description of the above technical solution:

[0011] The transmission assembly includes two rotating columns, which are rotatably connected to the left and right sides of the front of the limiting plate. Rolling columns are rotatably connected to the left and right sides of the bottom inner wall of the detection box. A servo motor is fixedly connected to the rear side of the limiting plate. The output end of the servo motor passes through the limiting plate and is fixedly connected to the rotating column on the right side. A transparent strip is provided on the outer wall of each rotating column. A sprocket is fixedly connected to the rear side of each rolling column. Chains are provided on the outer walls of the two sprockets. A second sprocket is fixedly connected to the rear side of both the left rotating column and the left rolling column. Chains are provided on the outer walls of the two sprockets.

[0012] The above technical solution allows the servo motor to drive the right rotating column to rotate, which in turn causes the other rotating column to rotate under the influence of the transparent belt. The rotating column and the winding column can rotate synchronously through the sprocket one and chain one, and the sprocket two and chain two.

[0013] As a further description of the above technical solution:

[0014] The blowing assembly includes a dustproof exhaust plate, which is fixedly connected to the right side of the outer wall of the test box. A fan is fixedly connected to the right side of the inner wall of the test box, and a dispersion air block is connected to the bottom of the fan.

[0015] The above technical solution allows the fan to draw in outside air through the dustproof exhaust plate and blow it into the dispersion block, where it is dispersed and then blown onto the filter paper.

[0016] As a further description of the above technical solution:

[0017] A scanner is fixedly connected to the top left side of the inner wall of the testing box, and a high-definition camera is fixedly connected to the rear right side of the inner wall of the testing box.

[0018] The above technical solution ensures that there are no defects on the filter paper through a scanner, and that the particle situation on the filter paper after inspection can be captured by a high-definition camera and thus be recorded.

[0019] As a further description of the above technical solution:

[0020] A display screen is fixedly connected to the front side of the outer wall of the testing box, a nameplate is fixedly connected to the left side of the front part of the outer wall of the testing box, and a warning sign block is fixedly connected to the right side of the front part of the outer wall of the testing box.

[0021] The above technical solution allows for the display of test results, the recording of equipment model on a nameplate, and the reminder of precautions to operators via warning signs.

[0022] As a further description of the above technical solution:

[0023] Limiting blocks are fixedly connected to the left and right sides of the outer wall of the detection box. A U-shaped block is rotatably connected to the outer wall of the limiting block. A filter screen is fixedly connected to the rear side of the outer wall of the detection box.

[0024] The above technical solution limits the position of the U-shaped block by a limiting block, and the U-shaped block makes it easy to pick up the equipment, while the filter screen prevents external dust from entering the equipment.

[0025] As a further description of the above technical solution:

[0026] A warning light is fixedly connected to the top right side of the outer wall of the testing box, and an anemometer is fixedly connected to the top rear side of the outer wall of the testing box.

[0027] The above technical solution allows for the use of warning lights to alert operators in case of malfunctions, and an anemometer to detect the wind speed around the equipment.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, the squeezing column is evacuated from the injection cylinder by activating the electric telescopic rod. An air sample is drawn through a three-way one-way tube. The squeezing column moves and squeezes the air, which is then evenly sprayed onto the filter paper by a conical disperser. A beta-ray instrument emits beta rays, and a beta-ray receiver records the intensity. The filter paper moves, and the particles are moved. The concentration of the particles is calculated by recording the concentration again with a beta-ray instrument and a beta-ray receiver. After detection, the filter paper is vibrated by an ultrasonic instrument, causing the particles to fall off. A fan draws air, and a dustproof exhaust plate filters the air, which is then blown towards the dispersed air block. The filter paper can be cleaned for reuse.

[0030] 2. In this invention, a motor drives a rotating plate and a cleaning brush to clean the inner wall of the air inlet pipe. Particulate matter falls into an inclined trough under centrifugal force, is collected by a scraper, and finally deposited into a collection box, thus ensuring the cutter surface is clean and unobstructed. Attached Figure Description

[0031] Figure 1 This is a perspective view of a beta-ray particulate matter concentration monitor proposed in this utility model;

[0032] Figure 2 This is a front view of a beta-ray particulate matter concentration monitor proposed in this utility model;

[0033] Figure 3 This is a rear view of a beta-ray particulate matter concentration monitor proposed in this utility model;

[0034] Figure 4 This is a cross-sectional view of the detection box of a beta-ray particulate matter concentration monitor proposed in this utility model;

[0035] Figure 5 This is a schematic diagram of the transmission component structure of a β-ray particulate matter concentration monitor proposed in this utility model.

[0036] Figure 6 This is a cross-sectional view of the sampling tube of a beta-ray particulate matter concentration monitor proposed in this utility model.

[0037] Legend:

[0038] 1. Testing box; 2. Cleaning mechanism; 201. Motor; 202. Rotating plate; 203. Cleaning brush; 204. Scraper; 205. Inclined groove; 206. Collection box; 3. Air inlet pipe; 4. Three-way one-way pipe; 5. Injection cylinder; 6. Electric telescopic rod; 7. Extrusion column; 8. Conical disperser; 9. Rotating column; 10. Transparent strip; 11. Limiting plate; 12. Servo motor; 13. Rolling column; 14. Sprocket one; 15. Chain one; 16. Sprocket two 17. Chain II; 18. Exhaust pipe; 19. Beta-ray instrument; 20. Beta-ray receiver; 21. Scanner; 22. High-definition camera; 23. Dustproof exhaust plate; 24. Fan; 25. Dispersing air block; 26. Buffer plate; 27. Ultrasonic instrument; 28. Auxiliary column; 29. ​​Display screen; 30. Nameplate; 31. Warning sign block; 32. Limit block; 33. U-shaped block; 34. Warning light; 35. Anemometer; 36. Filter screen. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] Reference Figure 1 , Figure 2 and Figure 3 This utility model provides an embodiment of a beta-ray particulate matter concentration monitor, comprising a detection chamber 1. An air inlet pipe 3 is connected to the top left side of the outer wall of the detection chamber 1. A three-way one-way pipe 4 penetrates the bottom of the outer wall of the air inlet pipe 3 and connects to the detection chamber 1. An injection cylinder 5 is connected to the right side of the three-way one-way pipe 4. An electric telescopic rod 6 is fixedly connected to the left side of the inner wall of the detection chamber 1. A squeezing column 7 is fixedly connected to one end of the electric telescopic rod 6 and is slidably connected to the injection cylinder 5. A limit plate 11 is fixedly connected to the rear side of the inner wall of the detection chamber 1. A transmission assembly is provided on the outer wall of the limit plate 11. The three-way one-way pipe 4... The bottom of the test chamber 1 is connected to a conical diffuser 8. An exhaust pipe 18 is provided at the bottom of the conical diffuser 8. The outer wall of the exhaust pipe 18 penetrates the rear side of the test chamber 1. A beta-ray instrument 19 is fixedly connected to the middle of the rear side of the inner wall of the test chamber 1. A beta-ray receiver 20 is fixedly connected to the bottom of the rear side of the inner wall of the test chamber 1. A buffer plate 26 is fixedly connected to the bottom right side of the inner wall of the test chamber 1. An ultrasonic instrument 27 is fixedly connected to the left side of the buffer plate 26. An auxiliary column 28 is rotatably connected to the bottom right side of the inner wall of the test chamber 1. A blowing assembly is provided on the right side of the inner wall of the test chamber 1. A cleaning mechanism 2 is provided on the inner wall of the air inlet pipe 3.

[0041] Specifically, when testing is required, the electric telescopic rod 6 is activated to drive the squeezing column 7 to draw air from the injection cylinder 5. This air sample is then drawn through the three-way one-way tube 4 and the air inlet pipe 3. After the squeezing column 7 moves a certain distance, the electric telescopic rod 6 is activated to retract, causing the squeezing column 7 to expel the air from the injection cylinder 5. Under the action of the three-way one-way tube 4, the air enters the conical disperser 8 and is evenly sprayed onto the filter paper. Before spraying, the β-ray instrument 19 emits β-rays onto the filter paper, and the intensity of the emitted β-rays is recorded by the β-ray receiver 20. After the filter paper is sprayed with particulate matter, the servo motor 12 drives the rotating column 9 to rotate in the transmission assembly. Driven by the transparent belt 10, the rotating column 9 on the other side rotates. Then, the sprocket... Under the action of chain 16 and chain 17, the roller 13 is driven to rotate. At the same time, under the action of sprocket 14 and chain 15, the filter paper roll is wound up, thereby moving the filter paper with particulate matter to the bottom of the β-ray instrument 19. Then, the β-ray instrument 19 and β-ray receiver 20 are activated to record the β-ray intensity again. The concentration of particulate matter is calculated by recording from both sides. After the detection is completed, the filter paper continues to move. When it reaches the top of the buffer plate 26, the ultrasonic instrument 27 is activated to vibrate and drop the particulate matter. Under the action of the blowing assembly, the fan 24 draws in air. Under the action of the dustproof exhaust plate 23, the outside air is filtered and blown into the dispersion block 25 and onto the filter paper, thereby further cleaning the filter paper and enabling the filter paper to be reused.

[0042] Reference Figure 1 , Figure 2 and Figure 3 The cleaning mechanism 2 includes a motor 201, which is fixedly connected to the top of the inner wall of the air intake pipe 3. A rotating plate 202 is fixedly connected to one end of the motor 201. A cleaning brush 203 is fixedly connected to the bottom of the rotating plate 202. Scrapers 204 are fixedly connected to both the left and right sides of the cleaning brush 203. An inclined groove 205 is opened at the bottom of the inner wall of the air intake pipe 3. A collection box 206 is fixedly connected to the right side of the outer wall of the air intake pipe 3. The left side of the outer wall of the collection box 206 passes through the air intake pipe 3 and communicates with the inclined groove 205.

[0043] Specifically, when a sampling is completed, the motor 201 is started to drive the rotating plate 202 to rotate, and at the same time, the cleaning brush 203 is driven to clean the inner wall of the air inlet pipe 3. Under the action of centrifugation, the filtered particles fall into the inclined groove 205. Under the action of the scraper 204, the particles falling into the inclined groove 205 are scraped and concentrated, and finally fall into the collection box 206, thereby completing the cleaning of the cutter surface inside the air inlet pipe 3, thus ensuring that the cutter surface is not blocked.

[0044] Reference Figure 1 , Figure 2 and Figure 3 The transmission assembly includes two rotating columns 9, which are rotatably connected to the left and right sides of the front of the limiting plate 11. Roller columns 13 are rotatably connected to the bottom left and right sides of the inner wall of the detection box 1. A servo motor 12 is fixedly connected to the rear side of the limiting plate 11. The output end of the servo motor 12 passes through the limiting plate 11 and is fixedly connected to the right rotating column 9. A transparent strip 10 is provided on the outer wall of the rotating column 9. A sprocket 14 is fixedly connected to the rear side of the roller column 13. Chains 15 are provided on the outer walls of the two sprockets 14. A second sprocket 16 is fixedly connected to the rear side of both the left rotating column 9 and the left roller column 13. Chains 27 are provided on the outer walls of the two sprockets 2 16. Machine 12 can drive the right rotating column 9 to rotate, and then, driven by the transparent belt 10, cause another rotating column 9 to rotate. The rotating column 9 and the winding column 13 can rotate synchronously through the sprocket 14 and chain 15, and the sprocket 16 and chain 17. The blowing assembly includes a dustproof exhaust plate 23, which is fixedly connected to the right side of the outer wall of the test box 1. A fan 24 is fixedly connected to the right side of the inner wall of the test box 1. The bottom of the fan 24 is connected to a dispersion block 25. The fan 24 can draw in outside air through the dustproof exhaust plate 23 and blow it into the dispersion block 25. Under the dispersion of the dispersion block 25, the air is blown towards the filter paper.

[0045] Specifically, the servo motor 12 can drive the right rotating column 9 to rotate, which in turn drives the transparent belt 10 to make another rotating column 9 rotate. With the sprocket 14 and chain 15, and the sprocket 26 and chain 27, the rotating column 9 and the rolling column 13 can rotate synchronously. The fan 24 can draw in outside air through the dustproof exhaust plate 23 and blow it into the dispersion block 25. Under the dispersion of the air in the dispersion block 25, it is blown towards the filter paper.

[0046] Reference Figure 1 , Figure 2 and Figure 3A scanner 21 is fixedly connected to the top left side of the inner wall of the testing chamber 1, and a high-definition camera 22 is fixedly connected to the rear right side of the inner wall of the testing chamber 1. The scanner 21 ensures that there are no defects on the filter paper, and the high-definition camera 22 can capture and record the particulate matter on the filter paper after testing. A display screen 29 is fixedly connected to the front side of the outer wall of the testing chamber 1, a nameplate 30 is fixedly connected to the front left side of the outer wall of the testing chamber 1, and a warning sign block 31 is fixedly connected to the front right side of the outer wall of the testing chamber 1. The display screen 29 can display the test results, the nameplate 30 can record the model of the equipment, and the warning sign block 31 can remind users of the test results. Operator Precautions: Limiting blocks 32 are fixedly connected to the left and right sides of the outer wall of the testing box 1. A U-shaped block 33 is rotatably connected to the outer wall of the limiting block 32. A filter screen 36 is fixedly connected to the rear side of the outer wall of the testing box 1. The limiting blocks 32 limit the position of the U-shaped block 33, and the U-shaped block 33 makes it easy to pick up the equipment. At the same time, the filter screen 36 can prevent external dust from entering the equipment. A warning light 34 is fixedly connected to the top right side of the outer wall of the testing box 1. An anemometer 35 is fixedly connected to the top rear side of the outer wall of the testing box 1. The warning light 34 can remind the operator in case of failure, and the anemometer 35 can detect the wind speed around the equipment.

[0047] Specifically, the scanner 21 ensures that there are no defects on the filter paper, and the high-definition camera 22 can capture and record the particle situation on the filter paper after inspection. The nameplate 30 records the model of the equipment, and the warning sign block 31 reminds the operator of precautions. The limit block 32 limits the position of the U-shaped block 33, and the U-shaped block 33 makes it easy to pick up the equipment. At the same time, the filter screen 36 prevents external dust from entering the equipment. The warning light 34 can remind the operator in case of failure, and the wind speed detector 35 can detect the wind speed around the equipment.

[0048] Working principle: First, when testing is required, the electric telescopic rod 6 is activated to drive the squeezing column 7 to draw air from the injection cylinder 5. This air sample is then drawn through the three-way one-way tube 4 and the air inlet pipe 3. After the squeezing column 7 moves a certain distance, the electric telescopic rod 6 is activated to retract, causing the squeezing column 7 to expel the air from the injection cylinder 5. Under the action of the three-way one-way tube 4, the air enters the conical disperser 8 and is evenly sprayed onto the filter paper. Before spraying, the β-ray instrument 19 is activated to emit β-rays onto the filter paper. The beta ray is transmitted to the beta ray receiver 20, where the intensity of the emitted beta rays is recorded. Then, after the filter paper containing the particulate matter is sprayed off, the servo motor 12 drives the rotating column 9 to rotate within the transmission assembly. Driven by the transparent belt 10, the rotating column 9 on the other side rotates. Subsequently, under the action of sprocket 16 and chain 17, the winding column 13 rotates. Simultaneously, under the action of sprocket 14 and chain 15, the filter paper roll is wound up, thus moving the filter paper containing the particulate matter to the bottom of the beta ray instrument 19. Then, the transmission is restarted. The beta-ray instrument 19 and beta-ray receiver 20 record the beta-ray intensity again. The concentration of particulate matter is calculated from the records on both sides. After the detection is complete, the filter paper continues to move. When it reaches above the buffer plate 26, the ultrasonic instrument 27 is activated, causing the particulate matter to vibrate and fall off. Under the action of the blowing assembly, the fan 24 draws in air, which is then filtered by the dustproof exhaust plate 23. The filtered air is then blown into the dispersion block 25 and onto the filter paper, further completing the filtration of the filter paper. The cleaning process allows the filter paper to be reused. When a sample is taken, the cleaning mechanism 2 starts the motor 201 to drive the rotating plate 202 to rotate, and at the same time drives the cleaning brush 203 to clean the inner wall of the air inlet pipe 3. Under the action of centrifugation, the filtered particles fall into the inclined groove 205. Under the action of the scraper 204, the particles in the inclined groove 205 are scraped and concentrated, and finally fall into the collection box 206, thus completing the cleaning of the cutter surface in the air inlet pipe 3, thereby ensuring that the cutter surface will not be blocked.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A beta-ray particulate matter concentration monitor, comprising a detection chamber (1), characterized in that: An air inlet pipe (3) is connected to the top left side of the outer wall of the test box (1). The bottom of the outer wall of the air inlet pipe (3) passes through the test box (1) and is connected to a three-way one-way pipe (4). An injection cylinder (5) is connected to the right side of the three-way one-way pipe (4). An electric telescopic rod (6) is fixedly connected to the left side of the inner wall of the test box (1). An extrusion column (7) is fixedly connected to one end of the electric telescopic rod (6). The extrusion column (7) is slidably connected to the injection cylinder (5). A limit plate (11) is fixedly connected to the rear side of the inner wall of the test box (1). A transmission assembly is provided on the outer wall of the limit plate (11). A conical disperser (8) is connected to the bottom of the three-way one-way pipe (4). The bottom of the diffuser (8) is provided with an exhaust pipe (18), the outer wall of which penetrates the rear side of the detection box (1). A beta-ray instrument (19) is fixedly connected to the middle of the rear side of the inner wall of the detection box (1). A beta-ray receiver (20) is fixedly connected to the bottom of the rear side of the inner wall of the detection box (1). A buffer plate (26) is fixedly connected to the bottom right side of the inner wall of the detection box (1). An ultrasonic instrument (27) is fixedly connected to the left side of the buffer plate (26). An auxiliary column (28) is rotatably connected to the bottom right side of the inner wall of the detection box (1). A blowing assembly is provided on the right side of the inner wall of the detection box (1). A cleaning mechanism (2) is provided on the inner wall of the air inlet pipe (3).

2. The β-ray particulate matter concentration monitor according to claim 1, characterized in that: The cleaning mechanism (2) includes a motor (201), which is fixedly connected to the top of the inner wall of the air intake pipe (3). A rotating plate (202) is fixedly connected to one end of the motor (201), and a cleaning brush (203) is fixedly connected to the bottom of the rotating plate (202). Scrapers (204) are fixedly connected to both the left and right sides of the cleaning brush (203). An inclined groove (205) is provided at the bottom of the inner wall of the air intake pipe (3). A collection box (206) is fixedly connected to the right side of the outer wall of the air intake pipe (3). The left side of the outer wall of the collection box (206) passes through the air intake pipe (3) and communicates with the inclined groove (205).

3. The β-ray particulate matter concentration monitor according to claim 1, characterized in that: The transmission assembly includes two rotating columns (9), which are rotatably connected to the front left and right sides of the limiting plate (11). The bottom left and right sides of the inner wall of the detection box (1) are rotatably connected to the scroll column (13). The rear side of the limiting plate (11) is fixedly connected to the servo motor (12). The output end of the servo motor (12) passes through the limiting plate (11) and is fixedly connected to the rotating column (9) on the right side. The outer wall of the rotating column (9) is provided with a transparent strip (10). The rear side of the scroll column (13) is fixedly connected to a sprocket (14). The outer walls of the two sprockets (14) are provided with chains (15). The rear sides of the left rotating column (9) and the left scroll column (13) are both fixedly connected to sprockets (16). The outer walls of the two sprockets (16) are provided with chains (17).

4. A β-ray particulate matter concentration monitor according to claim 1, characterized in that: The blowing assembly includes a dustproof exhaust plate (23), which is fixedly connected to the right side of the outer wall of the test box (1). A fan (24) is fixedly connected to the right side of the inner wall of the test box (1), and a dispersion air block (25) is connected to the bottom of the fan (24).

5. A β-ray particulate matter concentration monitor according to claim 1, characterized in that: A scanner (21) is fixedly connected to the top left side of the inner wall of the detection box (1), and a high-definition camera (22) is fixedly connected to the rear right side of the inner wall of the detection box (1).

6. A β-ray particulate matter concentration monitor according to claim 1, characterized in that: A display screen (29) is fixedly connected to the front side of the outer wall of the test box (1), a nameplate (30) is fixedly connected to the left side of the front part of the outer wall of the test box (1), and a warning sign block (31) is fixedly connected to the right side of the front part of the outer wall of the test box (1).

7. A β-ray particulate matter concentration monitor according to claim 1, characterized in that: Limiting blocks (32) are fixedly connected to the left and right sides of the outer wall of the detection box (1). A U-shaped block (33) is rotatably connected to the outer wall of the limiting block (32). A filter screen (36) is fixedly connected to the rear side of the outer wall of the detection box (1).

8. A β-ray particulate matter concentration monitor according to claim 1, characterized in that: A warning light (34) is fixedly connected to the top right side of the outer wall of the detection box (1), and a wind speed detector (35) is fixedly connected to the top rear side of the outer wall of the detection box (1).

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