CN118376548A - A dust monitoring system for construction environment - Google Patents

Abstract

The present invention relates to the field of building construction technology, and specifically to a dust monitoring system for a building construction environment, comprising a shell, a guide pipe is provided inside the shell to penetrate from top to bottom, an exhaust fan is provided inside the guide pipe, a plurality of detection tubes connected to the inside of the guide pipe are vertically provided around the guide pipe, and the other end of the detection tube extends out of the shell; a laser emitter and a photoelectric detector are respectively provided on both sides of the detection tube, the laser emitter and the photoelectric detector are coaxially arranged, and the laser emitter and the photoelectric detector are used to detect the dust concentration in the air passing through the inside of the detection tube; wherein a collection bucket is provided on the outside of the guide pipe, the collection bucket is installed below the detection tube, and the collection bucket is used to collect dust inside the detection pipe. The present invention can conveniently collect fine dust particles, and can facilitate subsequent dust component analysis.

Description

A dust monitoring system for construction environment

Technical Field

The invention relates to the technical field of building construction, and in particular to a dust monitoring system for a building construction environment.

Background technique

Dust is a kind of solid particles suspended in the air, which not only pollutes the air and environment, but also has a serious impact on the lives of citizens. It has become one of the main sources of air pollution. During construction at construction sites, a large amount of dust is generated due to various reasons such as the movement of transport vehicles, the spreading of building materials, the excavation and stacking of earth, etc., which has become one of the main sources of urban atmospheric dust.

However, the usual dust monitoring system only detects the concentration of dust. It cannot collect floating dust formed in the process of monitoring dust concentration, and cannot collect the components of dust simultaneously to facilitate the subsequent analysis of dust composition (dust composition monitoring is an important part of construction dust monitoring. Through chemical analysis, the main components of dust and their content can be understood, which helps to identify potential harmful substances, such as heavy metals, organic compounds, etc., which may have adverse effects on human health and the environment. In addition, understanding the composition of dust can also help determine appropriate dust control methods, such as selecting appropriate dust suppressants or treatment measures for specific components), which is not conducive to subsequent dust prevention and control.

Summary of the invention

Technical issues solved

In view of the above-mentioned shortcomings of the prior art, the present invention provides a dust monitoring system for a construction environment, which can effectively solve the problem that the common dust monitoring system in the prior art only detects the dust concentration, cannot collect the floating dust formed in the process of monitoring the dust concentration, cannot collect the dust components synchronously, and is not conducive to the subsequent dust prevention and control.

Technical solutions

To achieve the above objectives, the present invention is implemented through the following technical solutions:

The present invention provides a construction environment dust monitoring system, comprising a shell, a guide pipe is provided in the shell from top to bottom, an exhaust fan is provided in the guide pipe, a plurality of detection pipes connected with the guide pipe are vertically provided around the guide pipe, and the other end of the detection pipe extends out of the shell;

A laser emitter and a photoelectric detector are respectively arranged on both sides of the detection tube, the laser emitter and the photoelectric detector are coaxially arranged, and the laser emitter and the photoelectric detector are used to detect the dust concentration in the air passing through the inside of the detection tube;

Wherein, a collecting bucket is arranged on the outer side of the guide pipe, and the collecting bucket is installed below the detection pipe, and the collecting bucket is used to collect dust inside the detection pipe.

Furthermore, an isolation plate is provided at the connection between the detection tube and the guide pipe, and the isolation plate is used to separate the dust in the air flowing from the detection tube to the inside of the guide pipe. A dust collection hole is provided below the detection tube, and the dust collection hole is connected to the interior of the collection bin inside the collection bucket; wherein, guide plates are respectively provided on both sides of the dust collection hole, and the guide plates are used to guide the falling dust to fall into the collection bucket.

Furthermore, the isolation disk comprises a mounting ring, the outer side of the mounting ring is sealed and connected to the detection tube, and an isolation net is provided at one end of the mounting ring away from the guide pipe, and the isolation net is used to separate dust particles in the air.

Furthermore, a lever is provided on the side of the mounting ring away from the guide pipe, the end face of the lever facing the isolation net is pressed against the isolation net, the lever is rotatably installed inside the mounting ring, and a driving assembly is provided on the side of the lever facing the isolation net, and the driving assembly is used to drive the lever to rotate inside the mounting ring.

Furthermore, the driving assembly includes a driving gear, which is coaxially arranged with the mounting ring, and an air intake control assembly for driving the driving gear to rotate is arranged inside the guide duct.

Furthermore, the air intake control assembly includes a positioning ring fixedly mounted on the top of the inner wall of the guide pipe, a piston plate is slidably mounted below the positioning ring, the piston plate slides up and down inside the guide pipe, the piston plate and the positioning ring are connected to each other by an elastic member, and a driving gear row is provided below the piston plate for driving the driving gear to rotate.

Furthermore, the collecting bucket has a ring-shaped top view projection shape, the collecting bucket is sleeved on the outside of the guide pipe, the collecting bucket is rotatably connected to the guide pipe, a plurality of collecting bins are arranged at intervals inside the collecting bucket, a driving motor is arranged inside the shell, and the driving motor is used to drive the collecting bucket to rotate on the outside of the guide pipe.

Furthermore, a plurality of displays for displaying dust concentration are arranged on one side of the shell.

Beneficial Effects

Compared with the known public technology, the technical solution provided by the present invention has the following beneficial effects:

The present invention can conveniently collect the formed dust particles by arranging a device for receiving the dust separated from the inside of the detection tube on the outside of the guide tube, and can facilitate the subsequent dust component analysis.

The present invention arranges an isolation net and a lever inside the mounting ring, the isolation net blocks dust in the air on the surface of the isolation net, and the lever can clean up the dust at the position of the isolation net and the lever when rotating, so that the dust can be collected smoothly.

The present invention arranges a piston plate slidingly above the guide pipe, and the piston plate is elastically suspended inside the guide pipe. When the isolation net inside the detection tube is blocked by dust, the air entering the guide pipe from each detection tube is reduced, so that a negative pressure environment is generated inside the guide pipe, and the driving gear row installed under the piston plate is close to the driving gear, driving the lever to rotate, and the dust adsorbed on the isolation net is cleaned off.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

Fig. 1 is a schematic diagram of the overall structure of the present invention;

FIG2 is a schematic diagram of the installation structure inside the housing of the present invention;

FIG3 is a schematic diagram of the structure of the interior of the guide pipe of the present invention;

FIG4 is a schematic diagram of a partially enlarged structure of point A in FIG3 of the present invention;

FIG5 is a side view of a half-section structure of a guide pipe of the present invention;

FIG6 is a schematic diagram of the internal structure of a detection tube of the present invention;

FIG7 is an exploded view of the internal structure of the detection tube of the present invention;

FIG. 8 is a schematic diagram of the overall structure of the air inlet control assembly of the present invention.

The numbers in the figure represent respectively: 1. Shell; 2. Display; 3. Guide duct; 301. Exhaust port; 31. Exhaust fan; 32. Air inlet control assembly; 321. Positioning ring; 322. Piston plate; 323. Drive gear row; 324. Elastic member; 4. Detection tube; 401. Dust removal hole; 41. Laser emitter; 42. Isolation disk; 421. Isolation net; 422. Mounting ring; 423. Push rod; 43. Guide plate; 44. Drive gear; 45. Photoelectric detector; 46. Ring plate; 5. Collection bucket; 501. Collection bin; 51. Drive motor; 52. Cover plate.

Detailed ways

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

The present invention will be further described below in conjunction with the embodiments.

Embodiment: A dust monitoring system for a construction environment, as shown in FIG1 to FIG5, comprises a housing 1, a guide pipe 3 is provided in the housing 1 from top to bottom, an exhaust fan 31 is provided in the guide pipe 3, a plurality of detection pipes 4 connected to the inside of the guide pipe 3 are vertically provided around the guide pipe 3, and the other end of the detection pipe 4 extends out of the housing 1; a plurality of exhaust ports 301 are provided below the guide pipe 3;

A laser emitter 41 and a photoelectric detector 45 are respectively arranged on both sides of the detection tube 4. The laser emitter 41 and the photoelectric detector 45 are coaxially arranged and are used to detect the dust concentration in the air passing through the detection tube 4. An annular plate 46 is arranged on the side of the detection tube 4 away from the guide pipe 3. The annular plate 46 is used to prevent large external particles from splashing into the detection tube 4.

A collecting hopper 5 is provided on the outer side of the guide pipe 3 . The collecting hopper 5 is installed below the detection pipe 4 . The collecting hopper 5 is used to collect dust inside the detection pipe 4 .

In the present invention, by arranging a device for receiving the dust separated from the inside of the detection tube 4 on the outside of the guide pipe 3, the fine dust particles formed can be conveniently collected, which can facilitate the subsequent dust component analysis.

Among them, during the driving process of the exhaust fan 31, the airflow inside the guide pipe 3 will be driven to flow downward. The airflow flowing inside the guide pipe 3 will make the air inside the detection tube 4 flow away from the guide pipe 3, and the surrounding air can be conveniently sucked into the interior of each detection tube 4. After the air enters the detection tube 4, it will pass between the laser emitter 41 and the photodetector 45. At this time, the laser emitter 41 emits a laser, which is received by the photodetector 45 after being scattered by the dust in the air, and the concentration of dust in the detected air is obtained.

Detection principle: The working principle is mainly based on light scattering technology and electrostatic AC induction technology. Light scattering technology involves using a laser diode as a light source. When the laser is irradiated on suspended particles in the air, the particles scatter light. The scattered light intensity of the particles is proportional to their mass concentration. By measuring the scattered light intensity and applying the mass concentration conversion factor, the mass concentration of the particles can be determined. In addition, the laser dust detection equipment also uses a photodetector 45 to convert the scattered light intensity into an electrical signal to measure the dust concentration; the electrostatic AC induction technology involves monitoring the signal generated by the dynamic charge induction between the dust particles and the probe when they flow through the probe. By measuring the standard deviation of the charge signal, the interference amount of the AC signal can be determined, thereby estimating the dust emission.

Furthermore, as shown in Figure 6, an isolation plate 42 is provided at the connection between the detection tube 4 and the guide pipe 3, and the isolation plate 42 is used to separate the dust in the air flowing from the detection tube 4 to the guide pipe 3. A dust removal hole 401 is provided below the detection tube 4, and the dust removal hole 401 is connected to the interior of the collection bin 501 inside the collection bucket 5.

Among them, guide plates 43 are respectively arranged on both sides of the dust-removing through hole 401, and the guide plates 43 are used to guide the falling dust to fall into the collecting bucket 5; by setting an isolation plate 42, part of the dust in the air is retained in the detection tube 4, and a sample of the dust in the air is obtained, which is convenient for subsequent analysis of the dust in the air.

Furthermore, as shown in Figures 6 and 7, the isolation disk 42 includes a mounting ring 422, the outer side of the mounting ring 422 is sealed and connected to the detection tube 4, and an isolation net 421 is provided at one end of the mounting ring 422 away from the guide pipe 3. The isolation net 421 is a flexible net, and the isolation net 421 is used to separate dust particles in the air.

Furthermore, a lever 423 is provided on the side of the mounting ring 422 away from the guide pipe 3, and the end face of the lever 423 facing the isolation net 421 is pressed against the isolation net 421, and the lever 423 is rotatably installed inside the mounting ring 422. A driving assembly is provided on the side of the lever 423 facing the isolation net 421, and the driving assembly is used to drive the lever 423 to rotate inside the mounting ring 422.

In the present invention, an isolation net 421 and a lever 423 are arranged inside the mounting ring 422, so that the isolation net 421 blocks dust in the air on the surface of the isolation net 421, and the lever 423 contacts the isolation net 421 when rotating, so that the dust on the isolation net 421 can be cleaned off, and the dust can be collected smoothly.

Among them, a transmission shaft is coaxially arranged inside the mounting ring 422, one end of the transmission shaft passes through the isolation net 421 and is connected to one end of multiple levers 423, and the other end of the transmission shaft is connected to the driving component, which drives the levers 423 to rotate through the transmission shaft.

Furthermore, the driving assembly includes a driving gear 44 , which is coaxially arranged with the mounting ring 422 , and an air inlet control assembly 32 for driving the driving gear 44 to rotate is arranged inside the guide duct 3 .

Furthermore, as shown in Figure 8, the air intake control component 32 includes a positioning ring 321 fixedly installed on the top of the inner wall of the guide pipe 3, and a piston plate 322 is slidably installed below the positioning ring 321. The piston plate 322 slides up and down inside the guide pipe 3. The piston plate 322 and the positioning ring 321 are connected to each other through an elastic member 324. A driving gear row 323 is provided below the piston plate 322 for driving the driving gear 44 to rotate.

In the present invention, a piston plate 322 is slidably arranged above the guide pipe 3, and the piston plate 322 is elastically suspended inside the guide pipe 3. When the isolation net 421 inside the detection tube 4 is blocked by dust, the air entering the guide pipe 3 from each detection tube 4 is reduced, which will cause a negative pressure environment to be generated inside the guide pipe 3. At this time, the piston plate 322 on the top of the guide pipe 3 moves downward under the action of atmospheric pressure, so that the driving gear row 323 installed under the piston plate 322 will approach the driving gear 44, driving the lever 423 to rotate, and the dust adsorbed on the isolation net 421 is cleaned up.

It is worth mentioning that the cleaning process of the isolation net 421 by the lever 423 mainly occurs in the process of the driving gear row 323 moving upward. This process occurs after the exhaust fan 31 stops (after the piston plate 322 moves downward to a certain position, the exhaust fan 31 is turned off). At this time, the piston plate 322 moves upward driven by the elastic member 324 (in actual use, the elastic member 324 can be made of a spring or a rubber elastic band), driving the gear row 323 to move upward and drive the lever 423 to rotate. During this process, the interior of the detection tube 4 and the guide pipe 3 are under normal pressure, and the dust attached to the isolation net 421 can be cleaned more easily.

In addition, the process of detecting the dust concentration in the air occurs when the initial air enters the detection tube 4, and the moment of detecting the dust concentration again occurs when the exhaust fan 31 is turned on again to exhaust air. Therefore, the method of separating the dust in the air inside the detection tube 4 will not affect the size of the dust concentration detection value in the air, and will not affect the accuracy of the dust concentration detection.

Furthermore, the top view projection shape of the collecting bucket 5 is annular, the collecting bucket 5 is sleeved on the outside of the guide pipe 3, the collecting bucket 5 is rotatably connected to the guide pipe 3, a plurality of collecting bins 501 are arranged at intervals inside the collecting bucket 5, and a driving motor 51 is arranged inside the shell 1, and the driving motor 51 is used to drive the collecting bucket 5 to rotate on the outside of the guide pipe 3.

A cover plate 52 covering the collecting bucket 5 is further provided on the outer side of the guide pipe 3 . The cover plate 52 is fixedly mounted on the outer side of the guide pipe 3 , and the cover plate 52 is rotatably connected to the collecting bucket 5 .

Furthermore, a plurality of displays 2 for displaying dust concentration are disposed on one side of the housing 1 , and the photodetector 45 converts the scattered light intensity into an electrical signal and transmits it to the display 2 .

Among them, a driving motor 51 is set to drive the collection bucket 5 to rotate. After completing one dust collection, the driving motor 51 drives the collection bucket 5 to rotate a certain angle, so that the collection bin 501 aligned with the dust through hole 401 below the detection tube 4 is changed, and the dust can be collected and separated for multiple times.

Working principle: During the detection process, the exhaust fan 31 is turned on first. Under the action of the exhaust fan 31, the air around the shell 1 is sucked into the interior of the detection tube 4 to detect the dust concentration. Then, when a certain amount of dust accumulates inside the detection tube 4 (that is, the dust blocks the mesh holes on the isolation net 421), the piston plate 322 moves downward as the pressure inside the guide pipe 3 decreases. When the piston plate 322 drops to the specified position, the exhaust fan 31 is turned off and the piston plate 322 is reset. During the up and down movement of the piston plate 322, the dust attached to the isolation net 421 is cleaned down to the interior of the collection bucket 5, completing a dust concentration detection and dust collection in the air.

The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims (8)

1. The dust monitoring system for the construction environment is characterized by comprising a shell (1), wherein a guide pipeline (3) is arranged in the shell (1) in a vertically penetrating manner, an exhaust fan (31) is arranged in the guide pipeline (3), a plurality of detection pipes (4) communicated with the inside of the guide pipeline (3) are vertically arranged around the guide pipeline (3), and the other ends of the detection pipes (4) extend out of the shell (1);

The two sides of the detection tube (4) are respectively provided with a laser emitter (41) and a photoelectric detector (45), the laser emitters (41) and the photoelectric detectors (45) are coaxially arranged, and the laser emitters (41) and the photoelectric detectors (45) are used for detecting dust concentration in air passing through the inside of the detection tube (4);

The dust collecting device is characterized in that a collecting hopper (5) is arranged on the outer side of the guide pipeline (3), the collecting hopper (5) is arranged below the detection pipe (4), and the collecting hopper (5) is used for collecting dust inside the detection pipe (4).

2. The dust monitoring system for the construction environment according to claim 1, wherein an isolation disc (42) is arranged at the joint of the detection tube (4) and the guide pipeline (3), the isolation disc (42) is used for separating dust in the air flowing into the guide pipeline (3) from the detection tube (4), a dust discharging through hole (401) is arranged below the detection tube (4), and the dust discharging through hole (401) is communicated with the inside of a collection bin (501) inside the collection bucket (5).

3. A construction environment dust monitoring system according to claim 2, characterized in that the isolation disc (42) comprises a mounting ring (422), the outer side of the mounting ring (422) is in sealing connection with the detection tube (4), the end of the mounting ring (422) away from the guiding tube (3) is provided with an isolation net (421), and the isolation net (421) is used for isolating dust particles in the air.

4. A construction environment dust monitoring system according to claim 3, characterized in that the side of the mounting ring (422) far away from the guide pipeline (3) is provided with a deflector rod (423), the deflector rod (423) is abutted against the isolation net (421) towards the end face of the isolation net (421), the deflector rod (423) is rotatably mounted inside the mounting ring (422), and the side of the deflector rod (423) towards the isolation net (421) is provided with a driving component for driving the deflector rod (423) to rotate inside the mounting ring (422).

5. A construction environment dust monitoring system according to claim 4, characterized in that the driving assembly comprises a driving gear (44), the driving gear (44) is coaxially arranged with a mounting ring (422), and an air inlet control assembly (32) for driving the driving gear (44) to rotate is arranged in the guiding pipeline (3).

6. The dust monitoring system for the construction environment according to claim 5, wherein the air inlet control assembly (32) comprises a positioning ring (321) fixedly installed at the top of the inner wall of the guide pipeline (3), a piston plate (322) is slidably installed below the positioning ring (321), the piston plate (322) slides up and down inside the guide pipeline (3), the piston plate (322) and the positioning ring (321) are connected with each other through an elastic piece (324), and a driving gear row (323) for driving the driving gear (44) to rotate is arranged below the piston plate (322).

7. The building construction environment dust monitoring system according to claim 1, wherein the top view projection shape of the collecting hopper (5) is annular, the collecting hopper (5) is sleeved outside the guide pipeline (3), the collecting hopper (5) is rotationally connected with the guide pipeline (3), a plurality of collecting bins (501) are arranged at intervals inside the collecting hopper (5), a driving motor (51) is arranged inside the shell (1), and the driving motor (51) is used for driving the collecting hopper (5) to rotate outside the guide pipeline (3).

8. A construction environment dust monitoring system according to claim 1, characterized in that one side of the housing (1) is provided with a plurality of displays (2) for displaying dust concentration.