Dust monitoring device and monitoring method for environment supervision of building construction site

Abstract

The invention relates to the technical field of dust monitoring, in particular to a dust monitoring device and method for environment supervision of a building construction site, and the device comprises a collection cylinder, a filter plate is mounted in the collection cylinder, a plurality of filter holes are uniformly formed in the filter plate, and the inner wall of the collection cylinder is divided into a first cavity and a second cavity by the filter plate; a through groove is formed in the position, located at the bottom of the first cavity, of the collecting barrel, and a drying pipe and an anti-blocking mechanism are further installed on the collecting barrel. Therefore, gas passing through the interior of the drying pipe is heated, the possibility that dust is adhered to the interior of the device due to combination of dust and water vapor in the air in humid weather, and the content of dust in the air is reduced is avoided, and the monitoring precision is improved.

Description

Technical Field

[0001] The present application relates to the technical field of environmental dust monitoring at construction sites, and in particular to a dust monitoring device and a monitoring method for environmental supervision at construction sites. Background Art

[0002] At construction sites, there is a lot of dust in the air due to factors such as soil and ground particles, the processing and construction of building materials, and dust raised by vehicle transportation. Therefore, dust poses a potential threat to the health and safety of workers. Therefore, it is very important to monitor dust in the construction site environment. Usually, air quality monitors, particle deposition monitoring, and work environment monitoring are used to monitor and treat dust in the air.

[0003] For example, the patent application with the publication number CN218331108U discloses an air dust monitoring device, including a housing, the outer walls of both sides of the housing are fixedly connected with mounting frames, an outer wall of one side of the housing is provided with an air inlet, and the inner wall of the air inlet is fixedly connected with a filter mechanism, an outer wall of one side of the housing is provided with an air outlet, and the inner wall of the air outlet is fixedly connected with a fan, the inner wall of the housing is fixedly connected with a partition, and the outer wall of one side of the partition is provided with a round opening, the inner wall of the round opening is provided with an air detection probe, and the filter mechanism includes a filter sleeve, and the outer wall of one side of the filter sleeve is provided with a round groove, and the inner wall of the round groove is fixedly connected with a filter net. This prior art overcomes the shortcomings of the prior art, and the setting of the filter mechanism facilitates the filtering of the air entering the housing, and at the same time, a cleaning mechanism is set in the filter mechanism, and the setting of the cleaning mechanism facilitates the cleaning of impurities adhering to the filter net, thereby preventing the filter net from being blocked.

[0004] Although the above patent application can clean the impurities adhered to the filter, there are still the following problems: 1. The above patent application only uses a scraper to clean the impurities adhered to the surface of the filter during the filter cleaning process. Since the impurities are driven by the airflow and may be stuck in the mesh of the filter, the scraper may not be able to completely clean the impurities stuck in the mesh of the filter, affecting the filtering effect of the filter on impurities.

[0005] 2. When monitoring dust in humid weather, the humid air will cause the dust to adhere to the filter, which will lead to the blockage of the filter. At the same time, the humid air will drive the dust to adhere to the inner wall of the device, resulting in a decrease in the dust content in the gas entering the device, affecting the accuracy of dust monitoring.

[0006] Based on this, and according to the above-mentioned viewpoints, the existing technology for dust monitoring in construction site environmental supervision still has room for improvement. Summary of the invention

[0007] In order to solve the above technical problems, the present application provides a dust monitoring device and a monitoring method for environmental supervision at a construction site, which adopts the following technical solutions: In a first aspect, a dust monitoring device for environmental supervision at a construction site includes a collecting tube, a filter plate is installed inside the collecting tube, a plurality of filter holes are evenly arranged on the filter plate, the filter plate divides the inner wall of the collecting tube into a first cavity and a second cavity, the collecting tube and a through groove are arranged at the bottom of the first cavity, and a drying tube and an anti-blocking mechanism are also installed on the collecting tube.

[0008] The drying tube is installed at the end of the collecting tube and is connected with the inside of the collecting tube.

[0009] The anti-clogging mechanism comprises: a rotating shaft extending along the axial direction of the collecting tube and penetrating through a bearing and rotatably mounted in the middle of the filter plate.

[0010] The moving round block is arranged on the rotating shaft inside the first cavity and moves back and forth along the rotating shaft.

[0011] A plurality of extension rods are arranged and evenly installed on the circumferential surface of the moving round block. A plurality of fixed short rods matching the filter holes are evenly installed along the length direction of the extension rod on one side of the extension rod close to the filter plate.

[0012] Preferably, a heating sleeve is installed on the outer wall of the drying tube, and a resistance wire is arranged inside the heating sleeve and surrounds the drying tube and has a spiral structure.

[0013] Preferably, the end of the rotating shaft away from the drying tube passes through and rotates on the end of the collecting tube, and a driving motor for driving the rotating shaft to rotate is installed at the end of the rotating shaft away from the drying tube, and an annular block is installed on the circumferential surface of the rotating shaft located inside the second cavity, and a plurality of scrapers evenly distributed circumferentially are installed on the circumferential surface of the annular block.

[0014] Preferably, a plurality of annular plates are slidably arranged on the inner wall of the drying tube, and the annular plates are connected to each other by connecting rods. A connecting protrusion is arranged on the inner wall of the drying tube, and an elastic rope for resetting the annular plate away from the collecting tube is installed, and one end of the elastic rope away from the annular plate is installed on the connecting protrusion, and a guiding inclined surface is provided on the side of the annular plate away from the collecting tube.

[0015] Preferably, the end of the collecting tube equipped with a drying tube passes through a linkage shaft that is rotatably installed, the linkage shaft is located on the circumferential surface of the second cavity and is equipped with a linkage gear, an incomplete gear meshing with the linkage gear is installed on the rotating shaft, a connecting rope is wrapped around the circumferential surface of the linkage shaft located outside the collecting tube, and the end of the connecting rope away from the linkage shaft passes through the drying tube and is installed on a ring plate close to the collecting tube.

[0016] Preferably, an annular frame is installed at one end of the extension rod away from the moving round block, and the annular frame is slidably arranged on the inner wall of the first cavity, a bidirectional thread is provided on the rotating shaft, and the moving round block cooperates with the bidirectional thread.

[0017] Preferably, the filter plate is installed with an arc plate 1 at the bottom of the end surface located inside the second cavity, an arc plate 2 matching with the arc plate 1 is installed at the bottom of the inner wall of the second cavity, and a gap is formed between the arc plate 1 and the arc plate 2, and a through arc groove matching with the gap is installed at the bottom of the collecting tube.

[0018] Preferably, an L-shaped air inlet pipe is provided at one end of the drying tube away from the collecting tube, the horizontal section of the air inlet pipe is rotatably mounted on the drying tube, a ratchet is installed on the horizontal section of the air inlet pipe, a vertical protrusion is provided on the drying tube, and a pawl matching the ratchet is installed on the vertical protrusion.

[0019] Preferably, the rotating shaft is located on the inner circumferential surface of the first cavity and is provided with connecting frames symmetrically arranged along the length direction of the rotating shaft, and a cleaning plate is commonly installed at one end of the two connecting frames away from the rotating shaft.

[0020] In a second aspect, a dust monitoring method for environmental supervision at a construction site is provided, and its use method comprises the following steps: S1: pretreatment, moving the device to the area to be monitored and fixing it at a designated position.

[0021] S2: air intake processing, the first cavity is evacuated by an existing air pump, and then the pressure difference between the inside and outside of the collecting tube causes the gas to enter the inside of the collecting tube through the drying tube.

[0022] S3: Gas collection and processing. The gas passes through the second cavity and the filter plate in sequence and then enters the first cavity. The gas gathers inside the first cavity. At this time, the dust particles suspended in the gas fall on the inner wall of the first cavity.

[0023] S4: Unclogging treatment: during the gas flow, a short rod is fixed to unblock the filter holes.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. In the drying tube designed by the present invention, the resistance wire surrounding the drying tube heats the drying tube after being energized, thereby increasing the temperature inside the drying tube, thereby heating the gas passing through the drying tube, preventing the dust from combining with water vapor in the air in humid weather to cause the dust to adhere to the inside of the device, resulting in the possibility of reducing the dust content in the air, thereby improving the monitoring accuracy.

[0025] 2. In the anti-clogging mechanism designed in the present invention, the movable round block drives the fixed short rod to move through the extension rod during the reciprocating movement of the rotating shaft. The fixed short rod can be reciprocated in the filter hole during the movement, and then the fixed short rod can clean the impurities stuck in the filter hole, avoiding the possibility of impurities in the air being stuck in the filter hole, thereby improving the permeability of the filter hole.

[0026] 3. The annular plate and the connecting rod designed in the present invention cooperate with each other to scrape and rub the dust attached to the inner wall of the drying tube, avoiding the possibility of dust adhering to the inner wall of the drying tube and causing the dust content in the air to decrease, thereby improving the monitoring accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0028] Figure 2 It is a schematic diagram of the first internal three-dimensional structure of the present invention.

[0029] Figure 3 The present invention Figure 2 A partial enlarged view of point A in the middle.

[0030] Figure 4 It is a schematic diagram of the three-dimensional installation structure between the drying tube and the heating sleeve etc. of the present invention.

[0031] Figure 5 The present invention Figure 4 A partial enlarged view of point B in the middle.

[0032] Figure 6 It is a schematic diagram of the second internal three-dimensional structure of the present invention.

[0033] Figure 7 It is a schematic diagram of the three-dimensional installation structure between the rotating shaft, the extension rod and the annular frame of the present invention.

[0034] Figure 8 It is a schematic diagram of the internal three-dimensional structure of the drying tube of the present invention.

[0035] Fig. 9 The present invention Figure 8 A partial enlarged view of point C in the middle.

[0036] Fig.10 It is a schematic diagram of the three-dimensional installation structure between the rotating shaft, the connecting frame and the cleaning plate of the present invention.

[0037] Fig.11 It is a schematic diagram of the internal structure of the cleaning plate of the present invention.

[0038] Fig.12 The present invention is a flow chart of a dust monitoring method for construction site environmental supervision.

[0039] Explanation of the reference numerals: 1. collecting tube; 11. first cavity; 12. second cavity; 121. arc plate one; 122. arc plate two; 123. through arc groove; 13. through groove; 2. filter plate; 3. drying tube; 31. heating sleeve; 32. resistance wire; 33. air inlet pipe; 34. ratchet; 35. pawl; 4. anti-blocking mechanism; 41. rotating shaft; 411. driving motor; 412. annular block; 413. scraper; 414. connecting frame; 415. cleaning plate; 416. cleaning connecting plate; 417. reset spring rod; 42. moving round block; 43. extension rod; 431. annular frame; 44. fixed short rod; 5. annular plate; 51. elastic rope; 52. linkage shaft; 53. linkage gear; 54. incomplete gear; 55. connecting rope; 6. blade; 61. reversing tube. DETAILED DESCRIPTION

[0040] The following is combined with Figures 1 to 12 This application is described in further detail.

[0041] The embodiments of the present application disclose a dust monitoring device and a monitoring method for environmental supervision at a construction site, which dry the air to prevent dust from combining with water vapor in the air in humid weather and causing dust to adhere to the inside of the device, and can also clean the filter plate.

[0042] Embodiment 1:

[0043] See also Figure 1 A dust monitoring device for environmental supervision at a construction site includes a collecting tube 1, a filter plate 2 is installed inside the collecting tube 1, and a plurality of filter holes 21 are evenly opened on the filter plate 2. The filter plate 2 divides the inner wall of the collecting tube 1 into a first cavity 11 and a second cavity 12. The collecting tube 1 is provided with a through groove 13 at the bottom of the first cavity 11. The gas inside the first cavity 11 is moved out from the through groove 13 and collected. A drying pipe 3 and an anti-blocking mechanism 4 are also installed on the collecting tube 1.

[0044] The drying tube 3 is installed at the end of the collecting tube 1 and is connected to the inside of the collecting tube 1 .

[0045] The temperature inside the drying tube 3 is increased by heating, thereby heating the gas passing through the drying tube 3, preventing the dust from combining with water vapor in the air in humid weather and causing the dust to adhere to the inside of the device, thereby reducing the dust content in the air and improving the monitoring accuracy.

[0046] See also Figure 2 as well as Figure 3 The anti-clogging mechanism 4 includes: a rotating shaft 41, which extends along the axial direction of the collecting tube 1 and is rotatably installed in the middle of the filter plate 2 through a bearing.

[0047] The moving round block 42 is disposed on the rotating shaft 41 inside the first cavity 11 and reciprocates along the rotating shaft 41 .

[0048] There are multiple extension rods 43 and they are evenly installed on the circumference of the moving round block 42. A side of the extension rod 43 close to the filter plate 2 is evenly installed with multiple fixed short rods 44 that match the filter holes 21 along the length direction of the extension rod 43.

[0049] During the reciprocating movement of the movable round block 42 on the rotating shaft 41, the fixed short rod 44 is driven to move through the extension rod 43. During the movement of the fixed short rod 44, the filter hole 21 can be reciprocated and inserted, and then the fixed short rod 44 can clean the impurities stuck in the filter hole 21, avoiding the possibility of impurities in the air being stuck in the filter hole 21, thereby improving the permeability of the filter hole 21.

[0050] See also Figure 2 , Figure 4 as well as Figure 5 A heating sleeve 31 is installed on the outer wall of the drying tube 3, and a resistance wire 32 with a spiral structure surrounding the drying tube 3 is arranged inside the heating sleeve 31.

[0051] An L-shaped air inlet pipe 33 is provided at one end of the drying pipe 3 away from the collecting tube 1. The horizontal section of the air inlet pipe 33 is rotatably mounted on the drying pipe 3. A ratchet 34 is installed on the horizontal section of the air inlet pipe 33. A vertical protrusion is provided on the drying pipe 3, and a ratchet 35 that cooperates with the ratchet 34 is installed on the vertical protrusion.

[0052] In the initial state, a sealing plug is used to block the through groove 13, and the air inside the first cavity 11 is discharged through the existing air pump. At this time, there is a pressure difference between the collecting tube 1 and the outside, and then the resistance wire 32 is energized. At this time, the resistance wire 32 is energized and heated. The heated resistance wire 32 can heat the drying tube 3, thereby increasing the temperature inside the drying tube 3. During specific operation, the device is moved to a specified position and fixed. Due to the pressure difference between the collecting tube 1 and the external environment, the air in the external environment enters the drying tube 3 from the air inlet pipe 33. At this time, the heated drying tube 3 can heat and dry the air entering the drying tube 3. The heated and dried air enters the second cavity 12 to avoid dust combining with water vapor in the air in humid weather, causing dust to adhere to the inside of the device, resulting in the possibility of reducing the dust content in the air, thereby improving monitoring accuracy and reducing the blockage of the filter hole 21 caused by the combination of humid air and dust.

[0053] Before the gas enters the air intake pipe 33, the position of the air inlet of the air intake pipe 33 can be changed by manually rotating the air intake pipe 33 according to the position of the required air to be collected, so that the air intake pipe 33 can collect and process the air at different positions, thereby increasing the sample size of the monitoring data and making the detection data more representative.

[0054] After entering the second cavity 12 , the air flows into the first cavity 11 through the filter plate 2 . When the gas passes through the filter plate 2 , the filter holes 21 can isolate impurities (such as leaves) in the air, so that the impurities remain in the first cavity 11 .

[0055] During the air flow, the movable round block 42 moves toward the side of the filter plate 2 by external force. During the movement of the movable round block 42, the extension rod 43 is driven to move synchronously. During the movement of the extension rod 43, the fixed short rod 44 is driven to move synchronously. The fixed short rod 44 enters the filter hole 21 during the movement toward the side of the filter plate 2, and then the fixed short rod 44 can push the impurities stuck in the filter hole 21 into the second cavity 12.

[0056] During the air collection process, the extension rod 43 never comes into contact with the filter plate 2 when moving toward the filter plate 2, that is, the filter hole 21 is always in a through state, to avoid that when the extension rod 43 blocks the filter hole 21, the existing air pump still discharges the air inside the first cavity 11 to the outside, resulting in a large pressure difference between the inside and outside of the first cavity 11, thereby causing damage to the collection tube 1.

[0057] When the fixed short rod 44 passes through the filter hole 21, the movable round block 42 is reset. During the resetting process of the movable round block 42, the fixed short rod 44 is synchronously driven to reset through the extension rod 43. The above actions are repeated, and the fixed short rod 44 can be reciprocated in the filter hole 21 during the movement process to clean the impurities inside the filter hole 21.

[0058] See also Figure 6 The end of the rotating shaft 41 away from the drying tube 3 passes through and rotates on the end of the collecting tube 1, and a driving motor 411 is installed at the end of the rotating shaft 41 away from the drying tube 3 to drive it to rotate. An annular block 412 is installed on the circumferential surface of the rotating shaft 41 located inside the second cavity 12, and a plurality of scrapers 413 evenly distributed in the circumferential direction are installed on the circumferential surface of the annular block 412.

[0059] During the air flow process, the drive motor 411 is started synchronously, and the output shaft of the drive motor 411 rotates, driving the rotating shaft 41 to rotate. The rotating shaft 41 drives the annular block 412 to rotate synchronously during rotation. The annular block 412 drives the scraper 413 to rotate during rotation. During the rotation of the scraper 413, impurities attached to the side of the filter plate 2 close to the second cavity 12 can be cleaned, and impurities cleared from the filter hole 21 can be scraped off to avoid the possibility of impurities clogging the filter hole 21.

[0060] At the same time, the scraper 413 can also scrape off the dust attached to the filter plate 2 again, so that the dust on the filter plate 2 re-enters the second cavity 12 and enters the first cavity 11 through the filter hole 21 during the subsequent air flow process.

[0061] See also Figure 7 The end of the extension rod 43 away from the moving round block 42 is jointly installed with a ring frame 431, and the ring frame 431 is limitedly slidably arranged on the inner wall of the first cavity 11, and a bidirectional thread is opened on the rotating shaft 41, and the moving round block 42 cooperates with the bidirectional thread.

[0062] During specific operation, the rotating shaft 41 rotates and drives the moving ball 42 to reciprocate on the rotating shaft 41 through the bidirectional thread. Then, without external drive, the moving ball 42 drives the fixed short rod 44 to reciprocate inside the filter hole 21 through the extension rod 43 to clean the impurities inside the filter hole 21. The annular frame 431 can stabilize the extension rod 43 and reduce the possibility of shaking of the extension rod 43 during the movement of the extension rod 43, and can also limit the extension rod 43 to ensure that the extension rod 43 will not rotate relative to the rotating shaft 41.

[0063] See also Figure 6 , Figure 8 as well as Fig. 9 Since dust may adhere to the inner wall of the drying tube 3 when the humid air enters the drying tube 3 for drying, the annular plate 5 provided by the present invention can clean the dust adhered to the drying tube 3. Specifically, a plurality of annular plates 5 are slidably arranged on the inner wall of the drying tube 3. The annular plates 5 are connected to each other by connecting rods. A connecting protrusion is arranged on the inner wall of the drying tube 3. An elastic rope 51 for resetting the annular plate 5 away from the collecting tube 1 is installed. One end of the elastic rope 51 away from the annular plate 5 is installed on the connecting protrusion. A guiding slope is provided on the side of the annular plate 5 away from the collecting tube 1.

[0064] During specific operation, the annular plate 5 away from the air inlet pipe 33 is pulled by external force to move. During the movement of the annular plate 5, the connecting rod drives the remaining annular plates 5 to move. During the movement of the annular plate 5, the dust on the inner wall of the drying tube 3 can be scraped off. At this time, the elastic rope 51 is in a stretched state. When the annular plate 5 moves to the length of the connecting rod, the moving area of ​​the annular plate 5 covers the entire inner wall of the drying tube 3, and then there is no dust residual dead corner on the inner wall of the drying tube 3. At this time, the annular plate 5 is loosened, and the elastic rope 51 is reset and drives the remaining annular plates 5 to reset through the connecting rod. After the annular plate 5 is reset, the annular plate 5 away from the air inlet pipe 33 is pulled again to move, and then through the above steps, the annular plate 5 can be driven to reciprocately scrape off the dust attached to the inner wall of the drying tube 3, and the scraped dust is driven into the second cavity 12 by subsequent air.

[0065] The guiding slope on the annular plate 5 guides the scraped dust when the subsequent air drives it into the second cavity 12, so that the dust can smoothly pass over the annular plate 5 and enter the second cavity 12, avoiding the possibility of dust accumulation in the drying tube 3.

[0066] In order to reduce the use of external force, the traction rope provided by the present invention can drive the annular plate 5 to move back and forth without applying external force. Specifically, the end of the drying tube 3 installed in the collecting tube 1 passes through a linkage shaft 52 that is rotatably installed. The linkage shaft 52 is located on the circumferential surface of the second cavity 12 and is installed with a linkage gear 53. An incomplete gear 54 that meshes with the linkage gear 53 is installed on the rotating shaft 41. The linkage shaft 52 is located on the circumferential surface of the outside of the collecting tube 1 and is wrapped with a connecting rope 55. The end of the connecting rope 55 away from the linkage shaft 52 passes through the drying tube 3 and is installed on the annular plate 5 close to the collecting tube 1.

[0067] During specific operation, the rotation of the rotating shaft 41 drives the incomplete gear 54 to rotate. When the gear teeth on the incomplete gear 54 mesh with the linkage gear 53, the incomplete gear 54 and the linkage gear 53 mesh with each other to drive the linkage shaft 52 to rotate. During the rotation of the linkage shaft 52, the connecting rope 55 is wound. During the winding process of the connecting rope 55, the annular plate 5 away from the air inlet pipe 33 is driven to move. During the movement of the annular plate 5, the remaining annular plates 5 are driven to move through the connecting rod. During the movement of the annular plate 5, the dust on the inner wall of the drying tube 3 can be scraped off. When the gear teeth on the incomplete gear 54 are disengaged from the linkage gear 53, the incomplete gear 54 and the linkage gear 53 are no longer meshed. At this time, the linkage shaft 52 is no longer subjected to force. The elastic rope 51 is reset at this time and drives the remaining annular plates 5 to reset through the connecting rod. After the annular plate 5 is reset, the annular plate 5 away from the air inlet pipe 33 is pulled to move again. Then, through the above steps, the annular plate 5 can be driven to reciprocately scrape off the dust attached to the inner wall of the drying tube 3.

[0068] Furthermore, the annular plate 5 can be driven to move back and forth in the above manner without using an external drive.

[0069] Replay Figure 6 An arc plate 121 is installed at the bottom of the end surface of the filter plate 2 located inside the second cavity 12, and an arc plate 122 matching the arc plate 121 is installed at the bottom of the inner wall of the second cavity 12, and a gap is formed between the arc plate 121 and the arc plate 122, and a penetrating arc groove 123 matching the gap is installed at the bottom of the collecting cylinder 1.

[0070] The arc plate 1 121 is provided with an inclined surface on one side away from the filter plate 2, and the impurities scraped by the scraper 413 can guide the impurities after falling on the arc plate 1 121. The arc plate 2 122 is also provided with inclined surfaces on both sides. The inclined surface of the arc plate 2 122 close to the filter plate 2 can give way to the scraped impurities. The inclined surface of the arc plate 2 122 away from the filter plate 2 can guide the dust at the bottom of the second cavity 12 to prevent the dust from being deposited inside the second cavity 12. At the same time, when the dust is lifted up by the inclined surface of the arc plate 2 122 away from the filter plate 2, it can be at a certain distance from the gap to prevent the dust from falling inside the gap, and it will penetrate the arc at the starting position. The arc groove 123 is sealed. During operation, since the air inside the collecting cylinder 1 is in a flowing state and the dust particles are small, the dust and impurities are always attached to the filter plate 2 during the air flow and will not fall into the gap. When the air is no longer collected inside the collecting cylinder 1, that is, the sampling is completed, the air inside the collecting cylinder 1 no longer flows. During the rotation of the rotating shaft 41, the filter hole 21 is blocked by the moving round block 42 and the driving extension rod 43. At this time, the first cavity 11 and the second cavity 12 are isolated from each other. The impurities and dust scraped off on the filter plate 2 are not driven by the air and fall into the gap. At this time, the impurities in the gap can be removed by opening the arc groove 123.

[0071] See also Fig.10 as well as Fig.11 The rotating shaft 41 is located on the inner circumferential surface of the first cavity 11 and is provided with connecting frames 414 symmetrically arranged along the length direction of the rotating shaft 41 . A cleaning plate 415 is commonly provided at one end of the two connecting frames 414 away from the rotating shaft 41 .

[0072] The cleaning plate 415 is provided with bristles on one side close to the inner wall of the first cavity 11, and a cleaning connecting plate 416 is provided on one side close to the filter plate 2 for sliding along its length direction, and a reset spring rod 417 is installed between the cleaning connecting plate 416 and the cleaning plate 415, and bristles are also provided on the side close to the inner wall of the first cavity 11, and the cleaning connecting plate 416 always rests on the annular frame 431, that is, the reset spring rod 417 is always in a compressed state. During specific operation, the cleaning plate 415 is driven to rotate circumferentially through the connecting frame 414 during the rotation of the rotating shaft 41, and the bristles at the bottom of the cleaning plate 415 can clean the dust attached to the inner wall of the first cavity 11 and drop it into the through groove 13 during the circumferential rotation of the cleaning plate 415, thereby reducing the possibility of dust adhering to the inner wall of the first cavity 11, resulting in a reduction in the dust content in the monitored air and causing monitoring errors.

[0073] When the annular frame 431 moves toward the side of the filter plate 2, the cleaning connecting plate 416 moves synchronously due to the action of the return spring rod 417, and then the cleaning connecting plate 416 cooperates with the bristles to clean the part not contacted by the cleaning plate 415, which is more applicable.

[0074] Example 2: Reference Figure 6 On the basis of the first embodiment, the present invention further provides a fan blade 6, which can assist in driving the rotating shaft 41 to rotate. Specifically, the fan blade 6 is installed at one end of the circumferential surface of the rotating shaft 41 close to the drying tube 3, and a reversing tube 61 is installed on one end of the drying tube 3 located inside the second cavity 12, and the air outlet of the reversing tube 61 faces the fan blade 6. During specific operation, the air flows into the reversing tube 61 after passing through the drying tube 3. Since the reversing tube 61 is thin, the gas flow rate escaping from the reversing tube 61 is faster. When the gas flow rate reaches a certain speed, it is not driven by the driving motor 411 at this time. The gas escaping from the annular tube can also blow the fan blade 6 to rotate. The rotation of the fan blade 6 can drive the rotating shaft 41 to rotate, thereby reducing the use of the drive.

[0075] Finally, see Fig.12 , the present invention also provides a dust monitoring method for construction site environmental supervision, and its use method includes the following steps: S1: pretreatment, moving the device to the area to be monitored and fixing it at a designated position.

[0076] S2: air intake treatment, the first cavity 11 is evacuated by the existing air pump, and the air enters the drying tube 3 from the air intake pipe 33. The heated drying tube 3 can heat and dry the air entering the drying tube 3, and the heated and dried air enters the second cavity 12. The rotating shaft 41 drives the incomplete gear 54 to rotate during the rotation. When the gear teeth on the incomplete gear 54 are meshed with the linkage gear 53, the incomplete gear 54 and the linkage gear 53 are meshed with each other to drive the linkage shaft 52 to rotate. During the rotation of the linkage shaft 52, the connecting rope 55 is wound. During the winding process of the connecting rope 55, the annular plate 5 away from the air intake pipe 33 is driven to move. During the movement of the annular plate 5, the remaining annular plates 5 are driven to move through the connecting rod. During the movement of the annular plate 5, the dust on the inner wall of the drying tube 3 can be scraped off.

[0077] S3: Gas collection and processing. After entering the second cavity 12 , the air flows to the first cavity 11 through the filter plate 2 . When the gas passes through the filter plate 2 , the filter holes 21 can isolate impurities (such as leaves) in the air, so that the impurities remain in the first cavity 11 .

[0078] S4: Unblocking treatment. During the air flow, the moving round block 42 is moved toward the side of the filter plate 2 by external force. During the movement of the moving round block 42, the extension rod 43 is driven to move synchronously. During the movement of the extension rod 43, the fixed short rod 44 is driven to move synchronously. The fixed short rod 44 enters the filter hole 21 during the movement toward the side of the filter plate 2, and then the fixed short rod 44 can push the impurities stuck in the filter hole 21 into the second cavity 12.

[0079] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A dust monitoring device for environmental supervision at a construction site, comprising a collecting tube (1), characterized in that: The collecting tube (1) is provided with a filter plate (2) inside, and a plurality of filter holes (21) are evenly formed on the filter plate (2). The filter plate (2) divides the inner wall of the collecting tube (1) into a first cavity (11) and a second cavity (12). The collecting tube (1) is provided with a through groove (13) at the bottom of the first cavity (11). The collecting tube (1) is also provided with a drying tube (3) and an anti-blocking mechanism (4), wherein: The drying tube (3) is installed at the end of the collecting tube (1) and is connected to the inside of the collecting tube (1); The anti-blocking mechanism (4) comprises: A rotating shaft (41) extends along the axial direction of the collecting barrel (1) and is rotatably mounted in the middle of the filter plate (2) through a bearing. A movable round block (42) is arranged on the rotating shaft (41) inside the first cavity (11) and reciprocates along the rotating shaft (41); The extension rods (43) are provided in plurality and are evenly mounted on the circumferential surface of the movable round block (42). A plurality of fixed short rods (44) matching with the filter holes (21) are evenly mounted along the length direction of the extension rods (43) on one side of the extension rods (43) close to the filter plate (2).

2. The dust monitoring device for construction site environmental supervision according to claim 1 is characterized by: A heating sleeve (31) is installed on the outer wall of the drying tube (3), and a resistance wire (32) which surrounds the drying tube (3) and has a spiral structure is arranged inside the heating sleeve (31).

3. The dust monitoring device for construction site environmental supervision according to claim 1 is characterized by: The end of the rotating shaft (41) away from the drying tube (3) penetrates and rotates on the end of the collecting tube (1), and a driving motor (411) for driving the rotating shaft (41) is installed on the end of the rotating shaft (41) away from the drying tube (3). An annular block (412) is installed on the circumferential surface of the rotating shaft (41) located inside the second cavity (12), and a plurality of scrapers (413) evenly distributed in the circumferential direction are installed on the circumferential surface of the annular block (412).

4. The dust monitoring device for construction site environmental supervision according to claim 1 is characterized by: A plurality of annular plates (5) are slidably arranged on the inner wall of the drying tube (3), the annular plates (5) are connected to each other via connecting rods, a connecting protrusion is arranged on the inner wall of the drying tube (3), an elastic rope (51) for resetting the annular plate (5) away from the collecting tube (1) is installed, one end of the elastic rope (51) away from the annular plate (5) is installed on the connecting protrusion, and a guiding inclined surface is provided on one side of the annular plate (5) away from the collecting tube (1).

5. The dust monitoring device for construction site environmental supervision according to claim 4 is characterized in that: The end of the collecting cylinder (1) on which the drying tube (3) is installed passes through a linkage shaft (52) which is rotatably installed; a linkage gear (53) is installed on the circumferential surface of the linkage shaft (52) located in the second cavity (12); an incomplete gear (54) meshing with the linkage gear (53) is installed on the rotating shaft (41); a connecting rope (55) is wound around the circumferential surface of the linkage shaft (52) located outside the collecting cylinder (1); an end of the connecting rope (55) away from the linkage shaft (52) passes through the drying tube (3) and is installed on an annular plate (5) close to the collecting cylinder (1).

6. The dust monitoring device for construction site environmental supervision according to claim 1 is characterized by: The end of the extension rod (43) away from the moving round block (42) is jointly installed with an annular frame (431), and the annular frame (431) is limitedly slidably arranged on the inner wall of the first cavity (11), and a bidirectional thread is provided on the rotating shaft (41), and the moving round block (42) cooperates with the bidirectional thread.

7. The dust monitoring device for construction site environmental supervision according to claim 1 is characterized by: The filter plate (2) is provided with an arc-shaped plate 1 (121) at the bottom of the end surface located inside the second cavity (12), and an arc-shaped plate 2 (122) matching with the arc-shaped plate 1 (121) is provided at the bottom of the inner wall of the second cavity (12), and a gap is formed between the arc-shaped plate 1 (121) and the arc-shaped plate 2 (122), and a penetrating arc-shaped groove (123) matching with the gap is provided at the bottom of the collecting tube (1).

8. The dust monitoring device for construction site environmental supervision according to claim 1 is characterized by: An L-shaped air intake pipe (33) is arranged at one end of the drying pipe (3) away from the collecting tube (1); a horizontal section of the air intake pipe (33) is rotatably mounted on the drying pipe (3); a ratchet (34) is mounted on the horizontal section of the air intake pipe (33); a vertical protrusion is arranged on the drying pipe (3); a ratchet pawl (35) matching with the ratchet (34) is mounted on the vertical protrusion.

9. The dust monitoring device for construction site environmental supervision according to claim 1, characterized in that: The rotating shaft (41) is located on the inner circumferential surface of the first cavity (11) and is provided with connecting frames (414) symmetrically arranged along the length direction of the rotating shaft (41), and a cleaning plate (415) is commonly provided at one end of the two connecting frames (414) away from the rotating shaft (41).

10. A dust monitoring method for environmental supervision of a construction site, comprising a dust monitoring device for environmental supervision of a construction site as claimed in any one of claims 1 to 9, characterized in that: The method of use includes the following steps: S1: Pre-processing, moving the device to the area to be monitored and fixing it at the designated location; S2: air intake processing, using an existing air pump to evacuate the first cavity (11), and then the pressure difference between the inside and outside of the collecting tube (1) causes the gas to enter the interior of the collecting tube (1) through the drying tube (3); S3: gas collection processing, the gas passes through the second cavity (12) and the filter plate (2) in sequence and then enters the first cavity (11), the gas is collected inside the first cavity (11), and the dust particles suspended in the gas fall on the inner wall of the first cavity (11); S4: dredging treatment, during the gas flow process, the short rod (44) is fixed to dredge the filter hole (21).

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