Dynamic environment monitoring device and method for high-pollution construction area

Abstract

The invention discloses a dynamic environment monitoring device and method for a high-pollution construction area, and relates to the technical field of environment monitoring. Flying dust inlets are formed in vertical plates on the two sides of a steel plate box, airflow outlets are pre-formed in the bottom of the steel plate box, an upper cover is arranged on the top of the steel plate box, a main steel pipe in the center of the upper cover is inserted into a monitoring cavity, and an airflow pump is communicated with the bottom of the monitoring cavity. The lower end opening position of the main steel pipe is not lower than the raised dust inlet and right faces the airflow outlet. The vertical sensing equipment is installed in the main steel pipe fitting, a vertical photoelectric probe is arranged on the bottom side of the vertical sensing equipment, an annular side gap is formed between the vertical sensing equipment and the inner wall of the main steel pipe fitting, and the top inverted fan blades are arranged on the top of an inner cavity of the main steel pipe fitting. Transverse sensing equipment and a transverse photoelectric probe are arranged on the annular side of the main steel pipe fitting, and a plurality of ventilation filtering pieces are further arranged and located between the vertical sensing equipment and the inverted draught fan. According to the invention, the accuracy of long-term monitoring of the flying dust sensing equipment is guaranteed, and too frequent manual inspection operation is not needed.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental monitoring, and in particular to a dynamic environmental monitoring device and method for a high-pollution construction area. Background Art

[0002] In highly polluted areas, such as construction sites, mining areas, demolition sites, etc., dust is one of the main pollutants. Dust not only causes the air quality to deteriorate, affects the health of surrounding residents, causes respiratory diseases, cardiovascular diseases, etc., but also harms the ecological environment.

[0003] Laser photoelectric sensing equipment can be used to monitor dust in highly polluted areas. However, during monitoring, since the photoelectric sensing equipment itself may be in a high-concentration dust environment for a long time, a large amount of dust falls on the sensing equipment, blocking the sensor probe, making it impossible for the sensing equipment to accurately monitor the dust concentration in the surrounding environment.

[0004] The existing method is to regularly inspect the sensor equipment and directly observe whether the sensor probe is blocked. If it is blocked, the sensor probe is cleaned with a cleaning tool to ensure the accuracy of the sensor equipment monitoring. However, in order to further improve the monitoring accuracy of the sensor equipment, it is necessary to increase the frequency of manual inspections, which obviously requires a lot of manpower.

[0005] In summary, how to significantly reduce the manual inspection of dust sensor equipment and ensure the monitoring accuracy of dust sensor equipment has become a problem that needs to be solved. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a dynamic environmental monitoring device and method for high-pollution construction areas, which not only ensures the accuracy of long-term monitoring of dust sensor equipment, but also eliminates the need for overly frequent manual inspections.

[0007] In order to achieve the above technical effects, the specific contents adopted by the present invention are as follows:

[0008] A dynamic environmental monitoring device for a high-pollution construction area includes a steel plate box, a monitoring chamber inside the steel plate box, dust inlets on both sides of the vertical plates, an airflow outlet at the bottom, and an upper cover installed on the top. A main steel pipe inserted downward into the monitoring chamber is welded at the center of the upper cover. An airflow pump is arranged below the steel plate box, and the air inlet end of the airflow pump is connected to the bottom area of ​​the monitoring chamber.

[0009] The horizontal height of the opening at the lower end of the main steel pipe fitting is not lower than the dust inlet, and the opening at the lower end of the main steel pipe fitting is directly opposite to the airflow outlet at the bottom of the steel plate box. A vertical sensing device is fastened and installed inside the main steel pipe fitting, and an inverted fan is fastened and installed on the top. A vertical photoelectric probe for vertical downward detection is embedded on the bottom side of the vertical sensing device. A ring side gap is formed between the vertical sensing device and the inner wall of the main steel pipe fitting, and the blades of the inverted fan are located in the top area of ​​the inner cavity of the main steel pipe fitting. A transverse sensing device with a lower horizontal height than the vertical sensing device is configured on the ring side of the main steel pipe fitting, and the transverse sensing device is configured with a transverse photoelectric probe for detection toward the inner cavity of the main steel pipe fitting. Multiple ventilation filters with a lower horizontal height than the inverted fan and a higher horizontal height than the vertical sensing device are configured on the ring side of the main steel pipe fitting.

[0010] As a preferred technical solution of the monitoring device of the present invention: a welding installation opening is pre-opened at the center of the upper cover, and the main steel pipe passes through the welding installation opening and is welded and fixed to the upper cover.

[0011] As a preferred technical solution for the monitoring device of the present invention: an air intake pipe is installed at the air inlet end of the air flow pump and an exhaust pipe is installed at the air outlet end. The upper end of the air intake pipe is fixedly installed at the air flow outlet position at the bottom of the steel plate box through a flange structure, and the end outlet of the exhaust pipe is away from the dust inlet of the steel plate box.

[0012] As a preferred technical solution of the monitoring device of the present invention: a fixed bracket for supporting and installing the steel plate box body and the air flow pump is arranged under the steel plate box body.

[0013] As a preferred technical solution of the monitoring device of the present invention: a plurality of first lower steel pipes and a plurality of first upper steel pipes located above the first lower steel pipes are vertically welded on the ring side of the main steel pipe. The first lower steel pipe and the first upper steel pipe are connected to the inner cavity of the main steel pipe, and nut rings are welded on the outer ends of the first lower steel pipe and the first upper steel pipe, and bolts are screwed at the nut rings. The side end of the bolt at the position of the first lower steel pipe extends into the inner cavity of the main steel pipe and is in compression contact with the side of the ring of the vertical sensing device, and the bolts installed by the plurality of first lower steel pipes clamp and fix the vertical sensing device from multiple angles. The side end of the bolt at the position of the first upper steel pipe extends into the inner cavity of the main steel pipe and is in compression contact with the side of the ring of the inverted fan, and the bolts installed by the plurality of first upper steel pipes clamp and fix the inverted fan from multiple angles.

[0014] As a preferred technical solution of the monitoring device of the present invention: a second lower steel pipe connected to the inner cavity of the main steel pipe is vertically welded on the ring side of the main steel pipe, and a plurality of second upper steel pipes are arranged. The transverse sensing device is arranged at the position of the second lower steel pipe, and the ventilation filter is arranged at the position of the second upper steel pipe.

[0015] As a preferred technical solution of the monitoring device of the present invention: plastic steel mud is filled between the upper opening of the main steel pipe and the side of the inverted fan ring. This can prevent the inhalation of new external dust airflow from the upper opening of the main steel pipe when the inverted fan is started, thereby reducing the dust impact on the vertical sensing device.

[0016] The present invention provides a dynamic environmental monitoring method for a high-pollution construction area, comprising the following contents:

[0017] S1. Start the airflow pump, vertical sensing device, and horizontal sensing device. The negative pressure of the external airflow enters the monitoring cavity and moves toward the airflow outlet at the bottom of the steel plate box.

[0018] S2. The vertical photoelectric probe of the vertical sensing device detects the turbidity of the airflow entering the monitoring cavity below it and transmits it to the control system in real time.

[0019] S3. The transverse photoelectric probe of the transverse sensing equipment monitors the gas turbidity in the same horizontal area of ​​the inner cavity of the main steel pipe in real time.

[0020] S3.1. When the gas turbidity exceeds the standard, the control system starts the inverted fan, which blows air toward the vertical sensing device. At the same time, the external airflow enters the inner cavity of the main steel pipe from the ventilation filter. The airflow moves downward through the gap on the side of the ring, and the dust entering the inner cavity of the main steel pipe is discharged downward from the inner cavity of the main steel pipe.

[0021] S3.2. When the gas turbidity drops below the standard value, the control system triggers the delay module. After the delay ends, the inverted fan stops.

[0022] S4. After a period of time, when the inspection personnel check the monitoring device, they directly open the upper cover to check whether there are foreign objects at the positions of the vertical photoelectric probe and the horizontal photoelectric probe in the inner cavity of the main steel pipe. If there are foreign objects, they will be cleaned and the upper cover will be reinstalled.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. In the present invention, when the gas turbidity exceeds the standard, the inverted fan is started, and cooperates with the ventilation filter to form a specific flow direction of the airflow in the main steel pipe, and the dust entering the inner cavity is discharged downward, which effectively reduces the obstruction and adhesion of the vertical photoelectric probe of the vertical sensing device and the horizontal photoelectric probe of the horizontal sensing device by the dust, ensuring that the probe can accurately detect the environmental turbidity, thereby improving the monitoring accuracy.

[0025] 2. The device of the present invention has a dynamic self-cleaning function. When it is detected that the turbidity exceeds the standard, the inverted fan is automatically started to perform rapid pre-discharge cleaning, avoiding the situation in the traditional method where the sensor probe is blocked by a large amount of dust and frequent manual inspection operations are required. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is an overall schematic diagram of the environmental monitoring device in the present invention.

[0027] Figure 2 It is a structural diagram of the steel plate box in the present invention.

[0028] Figure 3 for Figure 1 Schematic diagram of the partial enlargement of point A in the middle.

[0029] Figure 4 It is an overall structural diagram of the main steel pipe fittings and auxiliary installation components in the present invention.

[0030] Figure 5 This is a disassembled structural diagram of the main steel pipe fittings and auxiliary installation components in the present invention.

[0031] Among them: 1-steel box, 101-monitoring chamber, 102-dust inlet, 103-upper cover, 1031-welding installation port, 104-airflow outlet; 2-fixed bracket; 3-airflow pump, 301-intake pipe, 302-exhaust pipe; 4-main steel pipe fittings, 401-first lower steel pipe fittings, 402-first upper steel pipe fittings, 403-second lower steel pipe fittings, 404-second upper steel pipe fittings, 405-side gap of the ring; 5-vertical sensing equipment, 501-vertical photoelectric probe; 6-horizontal sensing equipment; 601-horizontal photoelectric probe; 7-ventilation filter; 8-inverted fan; 9-plastic steel mud; 10-nut ring; 11-bolt fittings. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] Embodiment 1: The dynamic environmental monitoring device for highly polluted construction areas designed by the present invention comprises a steel plate box 1, a fixing bracket 2 for supporting the steel plate box 1, a main steel pipe 4 is arranged at the upper part of the steel plate box 1, and the main steel pipe 4 is provided with a vertical sensing device 5, a horizontal sensing device 6, a ventilation filter 7, and an inverted fan 8 located at the top of the main steel pipe 4. The specific structural configuration is as follows:

[0034] (a) Steel plate box: Figure 1 , Figure 2The interior is a monitoring chamber 101, with dust inlets 102 on both sides of the vertical plates, an airflow outlet 104 pre-opened at the bottom, and an upper cover 103 installed on the top. A welding installation port 1031 is pre-opened at the center of the upper cover 103 for installing the main steel pipe 4. A fixing bracket 2 for supporting and installing the steel plate box 1 and the airflow pump 3 is arranged below the steel plate box 1.

[0035] (ii) Main steel pipe fittings: Figure 3 , Figure 4 , Figure 5 , the lower end opening is not lower than the dust inlet 102, and the lower end opening is opposite to the airflow outlet 104 at the bottom of the steel plate box 1. The main steel pipe 4 is vertically welded with a plurality of first lower steel pipes 401, a plurality of first upper steel pipes 402 located above the first lower steel pipes 401, and a second lower steel pipe 403 and a plurality of second upper steel pipes 404 connected to the inner cavity. These welded pipes are connected to the inner cavity of the main steel pipe 4. The outer ends of the first lower steel pipe 401 and the first upper steel pipe 402 are welded with nut rings 10, and the bolts 11 are screwed at the positions of the nut rings 10. The bolts 11 at the positions of the first lower steel pipe 401 extend into the side ends of the inner cavity and are pressed and contacted with the side of the ring of the vertical sensing device 5 to fix the vertical sensing device 5. The bolts 11 at the positions of the first upper steel pipe 402 extend into the side ends of the inner cavity and are pressed and contacted with the side of the ring of the inverted fan 8 to fix the inverted fan 8. The plastic steel mud 9 is filled between the upper opening of the main steel pipe 4 and the side surface of the inverted fan 8 to prevent the inverted fan 8 from sucking in new external dust airflow when starting. A ring side gap 405 is formed between the vertical sensing device 5 and the inner wall of the main steel pipe 4.

[0036] (III) Air flow pump: Figure 1 An air intake pipe 301 is installed at the air inlet end and an exhaust pipe 302 is installed at the air outlet end. The upper end of the air intake pipe 301 is fixedly installed at the air flow outlet 104 at the bottom of the steel plate box 1 through a flange structure, and the terminal outlet of the exhaust pipe 302 is far away from the dust inlet 102 of the steel plate box 1.

[0037] (IV) Sensing equipment: such as Figure 1 , Figure 3 The vertical sensing device 5 is fastened inside the main steel pipe 4, and a vertical photoelectric probe 501 for vertical downward detection is embedded on the bottom side. The horizontal sensing device 6 is arranged at the second lower steel pipe 403, and is equipped with a horizontal photoelectric probe 601 for detecting toward the inner cavity of the main steel pipe 4.

[0038] (V) Ventilation filter and inverted fan: Figure 3 , Figure 4 , Figure 5The ventilation filter 7 can be made of sponge, air filter, etc. The ventilation filter 7 is arranged at the position of the second upper steel pipe 404. The inverted fan 8 is fastened to the top of the main steel pipe 4, and the fan blades are located in the top area of ​​the inner cavity of the main steel pipe 4.

[0039] In addition, the specific pre-installation method of the device of the present invention is as follows:

[0040] The first step is to weld the steel plate box 1. During the welding process, it is necessary to ensure that the monitoring cavity 101 inside the steel plate box 1 is well formed, and the dust inlet 102 of the vertical plates on both sides and the airflow outlet 104 at the bottom are accurately opened. At the same time, the upper cover 103 is installed on the top of the steel plate box 1, and the welding installation port 1031 needs to be pre-opened at the center of the upper cover 103.

[0041] In the second step, the main steel pipe fitting 4 is inserted into the welding installation port 1031 of the upper cover 103 and fixed by welding so that the main steel pipe fitting 4 is firmly connected to the upper cover 103, and the horizontal height of the lower opening of the main steel pipe fitting 4 is not lower than the dust inlet port 102, and the lower opening is directly opposite to the airflow outlet 104 at the bottom of the steel plate box 1.

[0042] The third step is to weld a plurality of first lower steel pipes 401 and a first upper steel pipe 402, as well as a second lower steel pipe 403 and a plurality of second upper steel pipes 404 on the ring side of the main steel pipe 4, to ensure that they are connected to the inner cavity of the main steel pipe 4. The nut ring 10 is welded to the outer end of the first lower steel pipe 401 and the first upper steel pipe 402, and the bolt member 11 is screwed at the position of the nut ring 10. The vertical sensing device 5 and the inverted fan 8 are installed in sequence, and the bolt member 11 is installed at the position of the first lower steel pipe 401 to fix the vertical sensing device 5, and the bolt member 11 is installed at the position of the first upper steel pipe 402 to fix the inverted fan 8.

[0043] The fourth step is to fill the space between the upper opening of the main steel pipe 4 and the side surface of the inverted fan 8 to prevent the inverted fan 8 from sucking in dust from the outside when it is started.

[0044] The fifth step is to install the transverse sensing device 6 at the position of the second lower steel pipe 403 so that the transverse photoelectric probe 601 of the transverse sensing device 6 can detect toward the inner cavity of the main steel pipe 4.

[0045] Step 6: Install the ventilation filter 7 at the position of the second upper steel pipe 404. Install a fixing bracket 2 below the steel plate box 1 to support the steel plate box 1 and the air flow pump 3.

[0046] Finally, install the suction pipe 301 at the air inlet end of the air flow pump 3 and the exhaust pipe 302 at the air outlet end, and then fix the upper end of the suction pipe 301 at the air flow outlet 104 at the bottom of the steel plate box 1 through the flange structure, and the end outlet of the exhaust pipe 302 should be away from the dust inlet 102 of the steel plate box 1.

[0047] Embodiment 2: The specific usage of the dynamic environmental monitoring device for high-pollution construction areas designed by the present invention is as follows:

[0048] 1. Start the device:

[0049] The airflow pump 3 , the vertical sensing device 5 , and the horizontal sensing device 6 are started, and the negative pressure of the external airflow enters the monitoring cavity 101 and moves toward the airflow outlet 104 at the bottom of the steel plate box 1 .

[0050] (II) Turbidity detection:

[0051] The vertical photoelectric probe 501 of the vertical sensing device 5 detects the turbidity of the airflow entering the monitoring cavity 101 below it and transmits it to the control system in real time. The horizontal photoelectric probe 601 of the horizontal sensing device 6 monitors the gas turbidity in the same horizontal area of ​​the main steel pipe 4 in real time.

[0052] (III) Cleaning:

[0053] When the gas turbidity exceeds the standard, the control system starts the inverted fan 8, and the inverted fan 8 blows air toward the vertical sensing device 5. At the same time, the external airflow enters the inner cavity of the main steel pipe 4 from the ventilation filter 7. The airflow moves downward through the annular side gap 405, and the dust entering the inner cavity of the main steel pipe 4 is discharged downward from the inner cavity of the main steel pipe 4. When the gas turbidity drops below the standard value, the control system triggers the delay module, and after the delay ends, the inverted fan 8 stops.

[0054] (IV) Inspection and maintenance:

[0055] After a period of time, when the inspection personnel check the monitoring device, they directly open the upper cover 103 to check whether there are foreign objects at the positions of the vertical photoelectric probe 501 and the horizontal photoelectric probe 601 in the inner cavity of the main steel pipe 4. If there are foreign objects, they are cleaned and the upper cover 103 is reinstalled.

[0056] In addition, the present invention can better cope with high-pollution environments and high-pollution construction areas, such as construction sites and mining areas, where the dust concentration is high and the environment is harsh. The device can work normally in a high-concentration dust environment through reasonable structural design, such as the setting of the air inlet and outlet of the steel plate box, the layout of steel pipes and accessories, and sealing protection measures such as plastic steel mud filling, so that it can adapt to complex high-pollution environments and ensure continuous monitoring. In addition, the fixed installation method of the device ensures the stability of the equipment under interference factors such as strong winds and vibrations, reduces measurement errors caused by equipment shaking, etc., and improves the reliability of monitoring data in complex environments, thereby ensuring the overall monitoring effect.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dynamic environmental monitoring device for a high-pollution construction area, characterized by: It comprises a steel plate box (1), wherein the interior of the steel plate box (1) is a monitoring chamber (101), vertical plates on both sides are provided with dust inlet openings (102), an airflow outlet (104) is pre-formed at the bottom, and an upper cover (103) is installed at the top; A main steel pipe member (4) inserted downward into the monitoring cavity (101) is welded at the center of the upper cover member (103); An air flow pump (3) is disposed below the steel plate box (1), and an air inlet end of the air flow pump (3) is in communication with the bottom area of ​​the monitoring chamber (101); The horizontal height of the lower opening of the main steel pipe member (4) is not lower than the dust inlet (102), and the lower opening of the main steel pipe member (4) is directly opposite to the airflow outlet (104) at the bottom of the steel plate box (1); A vertical sensing device (5) is fastened and installed inside the main steel pipe (4), and an inverted fan (8) is fastened and installed on the top. A vertical photoelectric probe (501) for vertically downward detection is embedded on the bottom side of the vertical sensing device (5). An annular side gap (405) is formed between the vertical sensing device (5) and the inner wall of the main steel pipe (4). The fan blades of the inverted fan (8) are located in the top area of ​​the inner cavity of the main steel pipe (4). The main steel pipe (4) is provided with a transverse sensing device (6) at a lower level than the vertical sensing device (5) on the ring side, and the transverse sensing device (6) is provided with a transverse photoelectric probe (601) for detecting toward the inner cavity of the main steel pipe (4); The main steel pipe member (4) is provided with a plurality of ventilation filter members (7) having a lower level than the inverted fan (8) and a higher level than the vertical sensing device (5) on the ring side.

2. The dynamic environmental monitoring device for a high-pollution construction area according to claim 1 is characterized by: A welding installation opening (1031) is pre-opened at the center of the upper cover (103), and the main steel pipe (4) passes through the welding installation opening (1031) and is welded and fixed to the upper cover (103).

3. The dynamic environmental monitoring device for a high-pollution construction area according to claim 1 is characterized by: The air intake end of the air flow pump (3) is equipped with an air intake pipe (301), and the air outlet end is equipped with an exhaust pipe (302). The upper end of the air intake pipe (301) is fixedly mounted at the air flow outlet (104) at the bottom of the steel plate box (1) via a flange structure.

4. The dynamic environmental monitoring device for a high-pollution construction area according to claim 1 is characterized by: A fixing bracket (2) for supporting and installing the steel plate box (1) and the air flow pump (3) is arranged below the steel plate box (1).

5. The dynamic environmental monitoring device for a high-pollution construction area according to claim 1 is characterized by: The main steel pipe member (4) is vertically welded with a plurality of first lower steel pipe members (401) and a plurality of first upper steel pipe members (402) located above the first lower steel pipe members (401) on the ring side; The first lower steel pipe member (401) and the first upper steel pipe member (402) are in communication with the inner cavity of the main steel pipe member (4); nut rings (10) are welded to the outer ends of the first lower steel pipe member (401) and the first upper steel pipe member (402); bolt members (11) are screwed at the positions of the nut rings (10); The side end of the bolt member (11) at the position of the first lower steel pipe member (401) extending into the inner cavity of the main steel pipe member (4) is in extrusion contact with the side surface of the ring of the vertical sensing device (5); The side end of the bolt member (11) at the position of the first upper steel pipe member (402) extending into the inner cavity of the main steel pipe member (4) is in extrusion contact with the side surface of the inverted fan (8) ring.

6. The dynamic environmental monitoring device for a high-pollution construction area according to claim 1 is characterized by: A second lower steel pipe member (403) and a plurality of second upper steel pipe members (404) are vertically welded on the ring side of the main steel pipe member (4); The lateral sensing device (6) is arranged at the position of the second lower steel pipe component (403), and the ventilation filter component (7) is arranged at the position of the second upper steel pipe component (404).

7. The dynamic environmental monitoring device for a high-pollution construction area according to claim 1 is characterized by: Plastic steel mud (9) is filled between the upper opening of the main steel pipe member (4) and the side surface of the inverted fan (8) ring.

8. A dynamic environmental monitoring method for a highly polluted construction area, characterized in that: A dynamic environmental monitoring device for a high-pollution construction area according to any one of claims 1 to 7, comprising the following contents: S1. Start the airflow pump (3), the vertical sensing device (5), and the lateral sensing device (6), and the negative pressure of the external airflow enters the monitoring chamber (101) and moves toward the airflow outlet (104) at the bottom of the steel plate box (1); S2. The vertical photoelectric probe (501) of the vertical sensing device (5) detects the turbidity of the airflow entering the monitoring chamber (101) below it and transmits it to the control system in real time; S3. The lateral photoelectric probe (601) of the lateral sensing device (6) monitors the gas turbidity in the same horizontal area of ​​the inner cavity of the main steel pipe (4) in real time; S3.

1. When the gas turbidity exceeds the standard, the control system starts the inverted fan (8), and the inverted fan (8) blows air toward the vertical sensing device (5). The airflow moves downward through the ring side gap (405), and the dust entering the inner cavity of the main steel pipe (4) is discharged downward from the inner cavity of the main steel pipe (4); S3.

2. When the gas turbidity drops below the standard value, the control system triggers the delay module, and after the delay ends, the inverted fan (8) stops; S4. After a period of time, when the inspection personnel inspect the monitoring device, they directly open the upper cover (103) to check whether there are foreign objects at the positions of the vertical photoelectric probe (501) and the horizontal photoelectric probe (601) in the inner cavity of the main steel pipe (4). If there are foreign objects, they are cleaned and the upper cover (103) is reinstalled.

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