CN212632164U

CN212632164U - PM2.5 monitoring and atomizing dust fall system

Info

Publication number: CN212632164U
Application number: CN202021353523.1U
Authority: CN
Inventors: 李虎; 贾书林; 杨傲
Original assignee: Jiangsu Fengjin Internet Of Things Technology Co ltd
Current assignee: Jiangsu Suyuan Engineering Technology Co ltd
Priority date: 2020-07-11
Filing date: 2020-07-11
Publication date: 2021-03-02
Anticipated expiration: 2030-07-11

Abstract

The utility model provides a PM2.5 monitoring and atomizing dust-settling system, which comprises a control box, a lifting sleeve, a lifting adjusting rod, a rotating sleeve, a fan, a circuit board, a water pump, a PM2.5 sensor and a rotating driving motor; the circuit board is provided with a controller, a rotation driving circuit, a water pump driving circuit, a fan driving circuit, a wireless communication module and a memory. The PM2.5 monitoring and atomizing dust-settling system utilizes the PM2.5 sensor to acquire PM2.5 data in real time, and starts the water pump to atomize and settle dust in time when the PM2.5 data exceed a set threshold value, so that the monitoring and purification of the PM2.5 are realized, and the air quality around the system is maintained; the control box can be rotated during atomization dust fall by using a rotation driving mechanism composed of a rotation driving circuit, a rotation driving motor, a driving worm wheel and a driving worm, so that dust fall can be carried out on the surrounding environment.

Description

PM2.5 monitoring and atomizing dust fall system

Technical Field

The utility model relates to an air quality monitored control system, especially a PM2.5 monitoring and atomizing dust fall system.

Background

At present, with the rapid development of industrialization and urbanization, the problem of environmental pollution is brought, and governments pay attention to urban environmental quality all the time so as to arrange the overall planning of cities timely, effectively and reasonably. Therefore, monitoring of urban environmental quality, especially air quality, is important. In order to objectively and timely monitor the air quality (PM2.5), it is necessary to design a PM2.5 monitoring and atomizing dust-settling system, which can monitor the PM2.5 at each monitoring point in real time and perform atomizing dust-settling in time when the standard exceeds.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the utility model provides a PM2.5 monitors and atomizing dust fall system, can monitor the PM2.5 of each monitoring point department in real time to in time atomize the dust fall when exceeding standard.

In order to realize the purpose of the utility model, the utility model provides a PM2.5 monitoring and atomizing dust-settling system, which comprises a control box, a lifting sleeve, a lifting adjusting rod, a rotating sleeve, a fan, a circuit board, a water pump, a PM2.5 sensor and a rotating driving motor;

the lower end of the lifting sleeve is vertically and fixedly arranged on a mounting bottom plate, and the lower end of the lifting adjusting rod is vertically inserted into the lifting sleeve; each positioning pin hole is arranged on the lifting adjusting rod at intervals, a locking bolt is screwed at the pipe orifice of the lifting sleeve, and the end part of a screw rod of the locking bolt extends into one positioning pin hole; the rotary sleeve is rotatably arranged on the lifting adjusting rod, and the rear side surface of the control box is fixedly arranged on the rotary sleeve; a driving worm wheel is fixedly arranged at the lower end of the rotary sleeve; a supporting platform is fixedly arranged on the lifting adjusting rod and below the rotating sleeve; a driving worm meshed with the driving worm wheel is rotatably arranged on the supporting platform; the end part of an output shaft of the rotary driving motor is in butt joint with the driving worm; an airflow channel is transversely arranged on the control box in a penetrating manner, and an air outlet of the fan is fixedly arranged at an air inlet at the right side of the airflow channel through a conical air guide sleeve; a power supply module is fixedly arranged at the lower part of the inner side of the control box; the circuit board, the water pump and the PM2.5 sensor are all fixedly arranged on the upper part of the inner side of the control box, and the water pump is isolated on the left side of the inner top of the control box through a waterproof isolation plate; a water inlet of the water pump is communicated to the outer side of the top of the control box through a water inlet pipe, a water outlet of the water pump is communicated to a left air outlet of the air flow channel through a water outlet pipe, and an atomizing nozzle is arranged at the pipe orifice of the water outlet pipe; an air inlet of the PM2.5 sensor is communicated to the right side of the air flow channel through the flow guide mechanism, and an air outlet of the PM2.5 sensor extends out of the top of the control box; the circuit board is provided with a controller, a rotation driving circuit, a water pump driving circuit, a fan driving circuit, a wireless communication module and a memory; the controller is respectively and electrically connected with the rotation driving circuit, the water pump driving circuit, the fan driving circuit, the wireless communication module, the PM2.5 sensor and the memory; the rotation driving circuit is electrically connected with the rotation driving motor, and the controller drives the rotation driving motor to rotate through the rotation driving circuit; the water pump driving circuit is electrically connected with the water pump, and the controller drives the water pump to rotate through the water pump driving circuit; the fan driving circuit is electrically connected with the fan, and the controller drives the fan to rotate through the fan driving circuit; the power module is used for supplying power for the controller, the rotation driving circuit, the water pump driving circuit, the fan driving circuit, the wireless communication module, the PM2.5 sensor and the memory respectively.

Furthermore, a solar power supply mechanism is arranged at the upper end part of the lifting adjusting rod; the solar power supply mechanism comprises a rotary sleeve head, a mounting back plate, a solar cell panel, a U-shaped support and a positioning bolt; the upper end of the rotary sleeve head is vertically and fixedly arranged in the middle of the lower side surface of the U-shaped support; the lower end of the rotary sleeve head is rotatably arranged at the upper end part of the lifting adjusting rod, and each limiting groove is vertically arranged on the rod wall at the upper end part of the lifting adjusting rod; the positioning bolt is arranged on the rotary sleeve head in a penetrating threaded screwing manner, and the end part of the screw rod of the positioning bolt extends into the limiting groove at the corresponding position; a supporting shaft is rotatably arranged on the U-shaped support and is vertical to the lifting adjusting rod; the middle part of the back of the mounting backboard is fixedly mounted on the support shaft; the solar cell panel is fixedly arranged on the front surface of the mounting back plate; the solar charging circuit is arranged on the circuit board, the solar cell panel is electrically connected with the solar charging circuit, and the solar cell panel charges the power module through the solar charging circuit.

Furthermore, an angle positioning mechanism is arranged on the side edge of the U-shaped support; the angle positioning mechanism comprises a positioning pin rod, a rebound pressure spring, a strip-shaped deflector rod and a positioning disc; the positioning disc is fixedly arranged on the shaft head of the supporting shaft, and conical pin holes are arranged at intervals on the circumferential edge of the positioning disc; the positioning pin rod is installed on the side edge of the U-shaped support through two pin rod supports in a pulling and inserting mode, and the end part of the positioning pin rod is provided with a conical pin head; the resilience pressure spring is sleeved on the positioning pin rod and is positioned between the two pin rod supports; the bar-shaped deflector rod is fixedly arranged on the positioning pin rod; the rebound compression spring is elastically supported on the bar-shaped deflector rod and used for pushing the conical pin head to be inserted into the corresponding conical pin hole.

Furthermore, a waterproof sealing convex ring is arranged at the end part of the water inlet pipe; and a grid screen plate is fixedly arranged on an air outlet of the PM2.5 sensor.

Furthermore, an atomizing conical cover is arranged at the left air outlet of the air flow channel.

Further, the flow guide mechanism comprises a buffer conical cover and an air guide pipe; the buffering conical cover is fixedly arranged on an air inlet of the PM2.5 sensor; one end of the induced air pipe extends into the airflow channel, and the other end of the induced air pipe is butted with the buffering conical cover; and air inlet holes are formed in the end part of the air guide pipe extending into the airflow channel and the pipe wall facing the air inlet of the airflow channel.

The beneficial effects of the utility model reside in that: the PM2.5 data are collected in real time by using a PM2.5 sensor, and a water pump is started in time to atomize and reduce dust when the PM2.5 data exceed a set threshold value, so that the monitoring and purification of the PM2.5 are realized, and the air quality around the system is maintained; the control box can be rotated during atomization dust fall by using a rotary driving mechanism consisting of a rotary driving circuit, a rotary driving motor, a driving worm wheel and a driving worm, so that the dust fall is carried out on the surrounding environment; the wireless communication module can be used for networking communication with the wireless communication module of the upper computer control center, so that collected data are uploaded to the upper computer control center for storage and recording, and remote monitoring is achieved.

Drawings

Fig. 1 is a front view of the present invention;

FIG. 2 is a schematic view of a partial sectional structure of a node control box according to the present invention;

fig. 3 is a schematic diagram of the system circuit structure of the present invention.

Detailed Description

The technical solution of the present invention will be described in detail with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.

Example 1:

as shown in fig. 1-3, the utility model discloses a PM2.5 monitoring and atomizing dust fall system includes: the device comprises a control box 1, a lifting sleeve 2, a lifting adjusting rod 4, a rotating sleeve 8, a fan 26, a circuit board 20, a water pump 16, a PM2.5 sensor 21 and a rotating driving motor 10;

the lower end of the lifting sleeve 2 is vertically and fixedly arranged on a mounting bottom plate 3, and the lower end of the lifting adjusting rod 4 is vertically inserted into the lifting sleeve 2; each positioning pin hole 5 is arranged on the lifting adjusting rod 4 at intervals, a locking bolt 6 is screwed at the pipe orifice of the lifting sleeve 2, and the end part of the screw rod of the locking bolt 6 extends into one positioning pin hole 5; the rotary sleeve 8 is rotatably arranged on the lifting adjusting rod 4, and the rear side surface of the control box 1 is fixedly arranged on the rotary sleeve 8; a driving worm wheel 9 is fixedly arranged at the lower end of the rotary sleeve 8; a supporting platform 7 is fixedly arranged on the lifting adjusting rod 4 and below the rotating sleeve 8; a driving worm 11 meshed with the driving worm wheel 9 is rotatably arranged on the supporting platform 7; the end part of an output shaft of the rotary driving motor 10 is butted and installed on the driving worm 11; an airflow channel 28 is transversely arranged on the control box 1 in a penetrating manner, and an air outlet of the fan 26 is fixedly arranged at an air inlet at the right side of the airflow channel 28 through a conical air guide sleeve 27; a power supply module 12 is fixedly arranged at the lower part of the inner side of the control box 1; the circuit board 20, the water pump 16 and the PM2.5 sensor 21 are all fixedly arranged on the upper part of the inner side of the control box 1, and the water pump 16 is isolated on the left side of the inner top of the control box 1 through a waterproof isolation plate 19; a water inlet of the water pump 16 is communicated to the outer side of the top of the control box 1 through a water inlet pipe 17, a water outlet of the water pump 16 is communicated to a left air outlet of the air flow channel 28 through a water outlet pipe 15, and an atomizing nozzle 14 is installed at the pipe orifice of the water outlet pipe 15; an air inlet of the PM2.5 sensor 21 is communicated to the right side of the air flow channel 28 through a flow guide mechanism, and an air outlet of the PM2.5 sensor 21 extends out of the top of the control box 1; a controller, a rotation driving circuit, a water pump driving circuit, a fan driving circuit, a wireless communication module and a memory are arranged on the circuit board 20; the controller is respectively and electrically connected with the rotation driving circuit, the water pump driving circuit, the fan driving circuit, the wireless communication module, the PM2.5 sensor 21 and the memory; the rotation driving circuit is electrically connected with the rotation driving motor 10, and the controller drives the rotation driving motor 10 to rotate through the rotation driving circuit; the water pump driving circuit is electrically connected with the water pump 16, and the controller drives the water pump 16 to rotate through the water pump driving circuit; the fan driving circuit is electrically connected with the fan 26, and the controller drives the fan 26 to rotate through the fan driving circuit; the power module 12 supplies power to the controller, the rotation driving circuit, the water pump driving circuit, the fan driving circuit, the wireless communication module, the PM2.5 sensor 21, and the memory, respectively.

The PM2.5 sensor 21 is used for collecting PM2.5 data in real time, and the water pump 16 is started in time to atomize and reduce dust when the PM2.5 data exceed a set threshold value, so that the PM2.5 is monitored and purified, and the air quality around the system is maintained; the control box 1 can be rotated during atomization dust fall by a rotary driving mechanism consisting of a rotary driving circuit, a rotary driving motor 10, a driving worm wheel 9 and a driving worm 11, so that the dust fall is carried out on the surrounding environment; the waterproof isolation plate 19 can play a role in waterproof isolation, so that the electricity safety is ensured; the wireless communication module can be used for networking communication with the wireless communication module of the upper computer control center, so that collected data are uploaded to the upper computer control center for storage and recording, and remote monitoring is achieved.

Furthermore, a solar power supply mechanism is arranged at the upper end part of the lifting adjusting rod 4; the solar power supply mechanism comprises a rotary sleeve head 30, a mounting back plate 34, a solar panel 35, a U-shaped support 29 and a positioning bolt 32; the upper end of the rotary sleeve head 30 is vertically and fixedly arranged in the middle of the lower side surface of the U-shaped support 29; the lower end of the rotary sleeve head 30 is rotatably arranged at the upper end part of the lifting adjusting rod 4, and each limiting groove 31 is vertically arranged on the rod wall of the upper end part of the lifting adjusting rod 4; the positioning bolt 32 is installed on the rotary sleeve head 30 in a penetrating threaded manner, and the end part of the screw rod of the positioning bolt 32 extends into the limiting groove 31 at the corresponding position; a supporting shaft 33 is rotatably arranged on the U-shaped support 29, and the supporting shaft 33 is vertical to the lifting adjusting rod 4; the middle part of the back of the mounting back plate 34 is fixedly mounted on the supporting shaft 33; the solar cell panel 35 is fixedly arranged on the front surface of the mounting backboard 34; the solar charging circuit is arranged on the circuit board 20, the solar cell panel 35 is electrically connected with the solar charging circuit, and the solar cell panel 35 charges the power module 12 through the solar charging circuit. The solar panel 35 can charge the power module 12 through the solar charging circuit, so that the system can stably run outdoors for a long time; by means of the matching of the positioning bolt 32 and the limiting groove 31, the rotary sleeve head 30 can be positioned, and the orientation angle of the solar cell panel 35 is ensured.

Furthermore, an angle positioning mechanism is arranged on the side edge of the U-shaped support 29; the angle positioning mechanism comprises a positioning pin rod 38, a rebound compression spring 40, a strip-shaped deflector rod 41 and a positioning disc 36; the positioning disk 36 is fixedly arranged on the shaft head of the supporting shaft 33, and conical pin holes 37 are arranged on the circumferential edge of the positioning disk 36 at intervals; the positioning pin rod 38 is installed on the side edge of the U-shaped support 29 in a drawing and inserting mode through two pin rod supports 39, and the end part of the positioning pin rod 38 is provided with a conical pin head 42; the rebounding pressure spring 40 is sleeved on the positioning pin rod 38, and the rebounding pressure spring 40 is positioned between the two pin rod support seats 39; the bar-shaped deflector rod 41 is fixedly arranged on the positioning pin rod 38; the rebound compression spring 40 is elastically supported on the bar-shaped shift lever 41 and used for pushing the conical pin head 42 to be inserted into the corresponding conical pin hole 37. The rebound compression spring 40 can push the taper pin head 42 to be inserted into the corresponding taper pin hole 37, so that the positioning disc 36 is positioned; the use of the toggle bar 41 facilitates toggling the detent pin 38, thereby releasing the detent disc 36 for pitch adjustment of the solar panel 35.

Further, a waterproof sealing convex ring 18 is arranged at the end part of the water inlet pipe 17; and a grid mesh plate 23 is fixedly arranged on an air outlet of the PM2.5 sensor 21. The waterproof sealing convex ring 18 can be used for enhancing the sealing performance after the pipe is connected; the air outlet can be protected by the grille screen 23.

Further, an atomizing cone 13 is installed at the left air outlet of the air flow channel 28. The atomizing conical cover 13 can play a role in flow guiding.

Further, the flow guide mechanism comprises a buffer conical cover 22 and an air guide pipe 24; the buffering conical cover 22 is fixedly arranged on an air inlet of the PM2.5 sensor 21; one end of the induced air pipe 24 extends into the air flow channel 28, and the other end is butted with the buffer conical cover 22; air inlet openings 25 are provided in the wall of the air duct 24 which projects into the air flow channel 28 at the end thereof and faces the air inlet openings of the air flow channel 28. The air inlet holes 25 are used for guiding air flow, strong air flow can be conveniently buffered in the flow buffering conical cover 22 and collected when entering the PM2.5 sensor 21, and the collection stability and reliability of the PM2.5 sensor 21 are ensured.

In the PM2.5 monitoring and atomizing dust-settling system disclosed by the utility model, the controller adopts the existing controller module, such as STM32 series single chip microcomputer module, for realizing the coordination control of signal receiving and sending; the memory adopts the existing memory module and is used for storing the acquired data; the wireless communication module adopts an existing Zigbee wireless module or WiFi module and is used for wirelessly uploading acquired data to an upper computer control center; the rotation driving circuit, the fan driving circuit and the water pump driving circuit all adopt the existing motor driving circuit and are used for respectively driving the rotation driving motor 9, the fan 26 and the water pump 16 in a rotation way; the PM2.5 sensor 21 adopts an existing PM2.5 sensor, and the PM2.5 sensor is provided with a low-power fan and used for monitoring PM2.5 in real time; the power module 12 is formed by the existing storage battery and the voltage stabilizing circuit thereof, the system can be externally connected with the commercial power, and the commercial power is converted into various voltages required by the system by the voltage stabilizing circuit.

The utility model discloses a PM2.5 monitoring and atomizing dust fall system when installing and using, adjust the height of lift adjusting lever 4 according to the on-the-spot installation environment particular case, adjust the every single move inclination and the horizontal orientation of solar cell panel 35 according to the sun light angle, make solar cell panel 35 can obtain better illuminance in one day; after the system is started, a PM2.5 sensor 21 analyzes the air flow entering an air inlet 25 to obtain PM2.5 data, a controller judges the PM2.5 data, if the PM2.5 data exceed a set threshold value, the controller drives a fan 26 to rotate through a fan driving circuit, meanwhile, a water pump 16 is driven to rotate through a water pump driving circuit, water mist is sprayed from an atomizing nozzle 14 and rapidly diffused along with the blowing of the air flow, and a rotation driving motor 10 is driven to rotate through the rotation driving circuit, so that a control box 1 rotates, and the water mist sprayed from the atomizing nozzle 14 is diffused all around; the solar cell panel 35 charges the storage battery of the power module 12 through the solar charging circuit under the sufficient light condition.

As mentioned above, although the present invention has been shown and described with reference to certain preferred embodiments, it should not be construed as limiting the invention itself. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a PM2.5 monitoring and atomizing dust fall system which characterized in that: comprises a control box (1), a lifting sleeve (2), a lifting adjusting rod (4), a rotating sleeve (8), a fan (26), a circuit board (20), a water pump (16), a PM2.5 sensor (21) and a rotating drive motor (10);

the lower end of the lifting sleeve (2) is vertically and fixedly arranged on a mounting bottom plate (3), and the lower end of the lifting adjusting rod (4) is vertically inserted into the lifting sleeve (2); each positioning pin hole (5) is arranged on the lifting adjusting rod (4) at intervals, a locking bolt (6) is screwed at the pipe orifice of the lifting sleeve (2), and the end part of a screw rod of the locking bolt (6) extends into one positioning pin hole (5); the rotary sleeve (8) is rotatably arranged on the lifting adjusting rod (4), and the rear side surface of the control box (1) is fixedly arranged on the rotary sleeve (8); a driving worm wheel (9) is fixedly arranged at the lower end of the rotary sleeve (8); a supporting platform (7) is fixedly arranged on the lifting adjusting rod (4) and below the rotating sleeve (8); a driving worm (11) meshed with the driving worm wheel (9) is rotatably arranged on the supporting platform (7); the end part of an output shaft of the rotary driving motor (10) is in butt joint with the driving worm (11); an airflow channel (28) is transversely arranged on the control box (1) in a penetrating manner, and an air outlet of the fan (26) is fixedly arranged at an air inlet at the right side of the airflow channel (28) through a conical air guide sleeve (27); a power supply module (12) is fixedly arranged at the lower part of the inner side of the control box (1); the circuit board (20), the water pump (16) and the PM2.5 sensor (21) are all fixedly mounted on the upper portion of the inner side of the control box (1), and the water pump (16) is isolated on the left side of the inner top of the control box (1) through a waterproof isolation plate (19); a water inlet of the water pump (16) is communicated to the outer side of the top of the control box (1) through a water inlet pipe (17), a water outlet of the water pump (16) is communicated to a left air outlet of the air flow channel (28) through a water outlet pipe (15), and an atomizing nozzle (14) is arranged at the pipe orifice of the water outlet pipe (15); an air inlet of the PM2.5 sensor (21) is communicated to the right side of the air flow channel (28) through a flow guide mechanism, and an air outlet of the PM2.5 sensor (21) extends out of the top of the control box (1); the circuit board (20) is provided with a controller, a rotation driving circuit, a water pump driving circuit, a fan driving circuit, a wireless communication module and a memory; the controller is respectively and electrically connected with the rotation driving circuit, the water pump driving circuit, the fan driving circuit, the wireless communication module, the PM2.5 sensor (21) and the memory; the rotation driving circuit is electrically connected with the rotation driving motor (10), and the controller drives the rotation driving motor (10) to rotate through the rotation driving circuit; the water pump driving circuit is electrically connected with the water pump (16), and the controller drives the water pump (16) to rotate through the water pump driving circuit; the fan driving circuit is electrically connected with the fan (26), and the controller drives the fan (26) to rotate through the fan driving circuit; the power module (12) respectively supplies power to the controller, the rotation driving circuit, the water pump driving circuit, the fan driving circuit, the wireless communication module, the PM2.5 sensor (21) and the memory.

2. The PM2.5 monitoring and atomizing dust settling system of claim 1, wherein: a solar power supply mechanism is arranged at the upper end part of the lifting adjusting rod (4); the solar power supply mechanism comprises a rotary sleeve head (30), a mounting back plate (34), a solar panel (35), a U-shaped support (29) and a positioning bolt (32); the upper end of the rotary sleeve head (30) is vertically and fixedly arranged in the middle of the lower side surface of the U-shaped support (29); the lower end of the rotary sleeve head (30) is rotatably arranged at the upper end part of the lifting adjusting rod (4), and each limiting groove (31) is vertically arranged on the rod wall of the upper end part of the lifting adjusting rod (4); the positioning bolt (32) is installed on the rotary sleeve head (30) in a penetrating threaded screwing manner, and the end part of the screw rod of the positioning bolt (32) extends into the limiting groove (31) at the corresponding position; a supporting shaft (33) is rotatably arranged on the U-shaped support (29), and the supporting shaft (33) is vertical to the lifting adjusting rod (4); the middle part of the back of the mounting back plate (34) is fixedly mounted on the support shaft (33); the solar cell panel (35) is fixedly arranged on the front surface of the mounting back plate (34); the solar charging circuit is arranged on the circuit board (20), the solar cell panel (35) is electrically connected with the solar charging circuit, and the solar cell panel (35) charges the power module (12) through the solar charging circuit.

3. The PM2.5 monitoring and atomizing dust settling system of claim 2, wherein: an angle positioning mechanism is arranged on the side edge of the U-shaped support (29); the angle positioning mechanism comprises a positioning pin rod (38), a rebound pressure spring (40), a strip-shaped shifting rod (41) and a positioning disc (36); the positioning disc (36) is fixedly arranged on the shaft head of the supporting shaft (33), and conical pin holes (37) are arranged on the circumferential edge of the positioning disc (36) at intervals; the positioning pin rod (38) is installed on the side edge of the U-shaped support (29) through two pin rod supports (39) in a drawing and inserting mode, and the end part of the positioning pin rod (38) is provided with a conical pin head (42); the rebounding pressure spring (40) is sleeved on the positioning pin rod (38), and the rebounding pressure spring (40) is positioned between the two pin rod supports (39); the bar-shaped deflector rod (41) is fixedly arranged on the positioning pin rod (38); the rebound compression spring (40) is elastically supported on the strip-shaped deflector rod (41) and is used for pushing the conical pin head (42) to be inserted into the corresponding conical pin hole (37).

4. The PM2.5 monitoring and atomizing dust settling system of claim 1, wherein: a waterproof sealing convex ring (18) is arranged at the end part of the water inlet pipe (17); and a grid screen plate (23) is fixedly arranged on an air outlet of the PM2.5 sensor (21).

5. The PM2.5 monitoring and atomizing dust settling system of claim 1, wherein: an atomizing conical cover (13) is arranged at the left air outlet of the air flow channel (28).

6. The PM2.5 monitoring and atomizing dust settling system of claim 1, wherein: the flow guide mechanism comprises a buffer conical cover (22) and an air guide pipe (24); the buffering conical cover (22) is fixedly arranged on an air inlet of the PM2.5 sensor (21); one end of the air guide pipe (24) extends into the air flow channel (28), and the other end is butted with the buffer conical cover (22); air inlet holes (25) are arranged on the end part of the air guide pipe (24) extending into the air flow channel (28) and the pipe wall facing the air inlet of the air flow channel (28).