Construction dust reduction device and method

Abstract

The application discloses a dust falling device and method for construction, and relates to the technical field of dust falling devices. The dust falling device comprises a base, a support is arranged on the upper end of the base through a motor, a wind cylinder is rotatably arranged in the middle of the support, a fan is arranged in the middle of the wind cylinder, a protection assembly is arranged at the front end of the fan, a spray head is arranged at the rear end of the fan, a cleaning assembly is arranged at the rear end of the spray head, a collecting box is fixed to the surface of one end of the wind cylinder close to the base, and the collecting box is located directly below the protection assembly. The protection assembly is used for intercepting sand and stones wrapped in airflow during operation, and the sand and stones automatically fall into the collecting box for centralized storage after the device is stopped. The cleaning assembly is used for replacing manual disassembly and flushing, and avoids the blockage of the spray hole.

Description

Technical Field

[0001] This invention relates to the field of dust suppression device technology, specifically to a dust suppression device and method for construction. Background Technology

[0002] Construction fog cannons are core equipment for dust control in building and municipal earthwork construction. The on-site dust suppression effect, equipment lifespan, and nozzle unobstructed flow directly affect the site's environmental compliance and operation and maintenance costs. Dust capture, long-distance atomization, and long-term stable operation all rely on duct protection and nozzle self-cleaning structure. They are also key hardware for dust control in processes such as roadbed excavation and slag transportation, and are related to construction environmental compliance and subsequent equipment maintenance investment.

[0003] However, existing fog cannon equipment often uses fixed filters or simple baffles for dust protection in the front-end air duct. This not only provides limited protection and hinders automatic switching between on and off states, but also allows dust and gravel to continuously intrude into the air duct when idle, easily causing wear on the fan blades and blockage of the air duct. Furthermore, the trapped sand and gravel lacks an automatic collection and discharge mechanism, accumulating and continuously affecting airflow. Additionally, nozzle cleaning relies heavily on manual disassembly and rinsing, resulting in low efficiency. Manual cleaning also introduces errors due to incomplete wiping of scale and dust, leading to dirt and scale buildup on the nozzle's outer wall. The existing equipment suffers from problems such as uneven atomization, spray deviation, and shortened range. In addition, it lacks a matching automatic wiping mechanism, and long-term accumulation of dirt can easily cause nozzle blockage. The existing equipment has independent dust prevention and cleaning functions without linkage design. After shutdown, it is not convenient to complete the entire process of sealing the air duct, collecting impurities, and automatically wiping the nozzle at the same time. The degree of automation is low. In addition, the conventional cleaning method relies only on water rinsing, which is not suitable for the complex working conditions of construction site circulating water scale and mud adhesion. The adaptability is poor, which greatly reduces the efficiency of fog cannon dust suppression and the service life of nozzle and fan core components.

[0004] To address the aforementioned issues, innovative designs are urgently needed based on existing approaches. Summary of the Invention

[0005] The purpose of this invention is to provide a dust suppression device for construction to solve the problems mentioned in the background. The technical solution of this invention addresses the problem that the existing technical solutions are too simplistic and provides a solution that is significantly different from the existing technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a dust suppression device for construction, comprising a base, a support mounted on the upper end of the base via a motor, a duct rotating in the middle of the support, a fan located in the middle of the duct, a protective component at the front end of the fan, a nozzle at the rear end of the fan, a cleaning component at the rear end of the nozzle, and a collection box fixed to the surface of the duct near the base, the collection box being located directly below the protective component;

[0007] The protective assembly includes a central rod, a motor is provided at the end of the central rod near the fan, a sleeve is fixed to the inner wall of the air duct, a connecting rod is fixed between the central rod and the sleeve, a sealing blade is fixed on the connecting rod, a transmission plate is fixed to the end of the connecting rod away from the central rod through the sleeve, and a connecting ring is rotatably provided on the surface of the sleeve cavity.

[0008] Several connecting posts are fixed to one end of the connecting ring near the air duct, and a second connecting rod is fixed to one end of the connecting ring near the fan. The other end of the second connecting rod is fixed to the output end of the motor, and a baffle is fixed to one end of the sealing blade away from the fan.

[0009] Preferably, the connecting ring is limited to rotating on the cavity surface of the sleeve, and the transmission plate oscillates on the cavity surface of the sleeve.

[0010] The transmission plate has a through groove at the end away from the fan, the connecting column slides within the through groove of the transmission plate, and the air duct and sleeve have through grooves at the ends near the collection box.

[0011] Preferably, the first connecting rod, the closed leaf, the first transmission plate, the connecting column, and the baffle are arranged in ten groups. The ten groups of the first connecting rod, the closed leaf, the first transmission plate, the connecting column, and the baffle are distributed in a circumferentially spaced manner. The second connecting rod is designed in an "L" shape, and the baffle is designed in an "L" shape.

[0012] Preferably, the cleaning assembly includes an electric rotating ring, which is rotatably mounted on the outer surface of the air duct near the nozzle end, and a flow guide is fixed to the outer surface of the electric rotating ring.

[0013] A connecting rod three is fixed in the middle of the electric rotating ring. A transmission plate two rotates on the end of the connecting rod three near the nozzle. A sponge block is fixed on the end of the transmission plate two away from the connecting rod three. An abutment rod is fixed on the surface of the air duct away from the nozzle.

[0014] Preferably, the electric rotating ring has a groove, the connecting rod three is fixedly installed on the inner wall of the groove of the electric rotating ring, the transmission plate two rotates in the groove of the electric rotating ring, the transmission plate two has a through groove, and the abutting rod slides within the through groove of the transmission plate two.

[0015] Preferably, the connecting rod three, transmission plate two, abutment rod and sponge block are arranged in twelve groups, and the twelve groups of connecting rod three, transmission plate two, abutment rod and sponge block are distributed in a circumferential shape at equal intervals.

[0016] Preferably, the method includes the following steps:

[0017] S1: Before operation, start the motor of the center rod, and through the connecting rod and connecting ring, the closed blades will open the ventilation duct. Run the fan under no-load for 2-3 seconds. If there are no abnormalities, turn on the water pump. The nozzles will atomize water mist to work with the fan to complete the dust suppression.

[0018] S2: After finishing the work, turn off the water pump first, let the blower run idle for a few minutes to dry the water mist in the pipeline, start the electric rotating ring, the abutment rod drives the sponge block to rotate and wipe the nozzle, and the guide cover prevents sewage backflow;

[0019] S3: After cleaning is completed, the motor reverses to retract the sealing blades and close the air duct. The sand and gravel intercepted by the baffle fall into the collection box by gravity, completing the shutdown protection.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. This invention achieves automatic switching of the air duct at the front end of the air duct through an automatic opening and closing protective component. The motor drives the connecting rod 2, connecting ring and transmission plate 1 to control the synchronous opening or closing of multiple sets of sealing blades. During operation, the air duct is fully open to ensure air supply. After shutdown, the sealing blades close to prevent dust and gravel from entering the air duct and damaging the fan. During operation, the baffle intercepts sand and gravel carried by the airflow. After shutdown, impurities fall automatically into the collection box through the bottom channel and are collected. There is no need for manual cleaning of the accumulated material in the air duct, which maintains smooth ventilation of the fan for a long time and effectively extends the service life of the fan.

[0022] 2. This invention achieves fully automatic wiping and descaling of the nozzles through a circumferentially arranged cleaning component. The electric rotating ring revolves around the nozzles, and the abutment rod limits the rotation of the transmission plate. The sponge block wipes the nozzles circumferentially. After the operation, the fan first dries the residual water mist in the pipeline, and then automatically cleans the mud and scale on the nozzle surface, replacing manual disassembly and rinsing. This avoids nozzle blockage and atomization deviation. The guide shroud prevents the backflow of cleaning wastewater from corroding the air duct. The protection and cleaning mechanisms operate in conjunction and synchronously, making it suitable for dusty and scale-prone construction sites, reducing manual maintenance and stabilizing dust reduction. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0024] Figure 2 This is a schematic diagram showing the disassembled main structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the protective component structure of the present invention;

[0026] Figure 4 This is a schematic diagram showing the disassembled protective components of the present invention;

[0027] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the middle;

[0028] Figure 6 This is a structural diagram of the protective component of the present invention.

[0029] Figure 7 This is a schematic diagram of the cleaning component structure of the present invention;

[0030] Figure 8 This is a schematic diagram of the cleaning component of the present invention disassembled.

[0031] Figure 9 For the present invention Figure 8 Enlarged structural diagram at point B.

[0032] In the diagram: 1. Base; 2. Support; 3. Air duct; 4. Fan; 5. Nozzle; 6. Protective assembly; 61. Center rod; 62. Sleeve; 63. Connecting rod one; 64. Sealing blade; 65. Transmission plate one; 66. Connecting ring; 67. Connecting column; 68. Connecting rod two; 69. Baffle; 7. Collection box; 8. Cleaning assembly; 81. Electric rotating ring; 82. Flow guide; 83. Connecting rod three; 84. Transmission plate two; 85. Abutment rod; 86. Sponge block. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figures 1-9 The present invention provides a technical solution: a dust suppression device for construction, including a base 1, a support 2 installed on the upper end of the base 1 via a motor, a duct 3 rotating in the middle of the support 2, a fan 4 in the middle of the duct 3, a protective component 6 at the front end of the fan 4, a nozzle 5 at the rear end of the fan 4, a cleaning component 8 at the rear end of the nozzle 5, and a collection box 7 fixed on the surface of the duct 3 near the base 1, the collection box 7 being located directly below the protective component 6;

[0035] The protective component 6 includes a central rod 61, a motor is provided at the end of the central rod 61 near the fan 4, a sleeve 62 is fixed to the inner wall of the air duct 3, a connecting rod 63 is fixed between the central rod 61 and the sleeve 62, a sealing blade 64 is fixed on the connecting rod 63, a transmission plate 65 is fixed through the sleeve 62 at the end of the connecting rod 63 away from the central rod 61, and a connecting ring 66 is rotatably mounted on the surface of the cavity of the sleeve 62.

[0036] A number of connecting posts 67 are fixed to one end of the connecting ring 66 near the air duct 3. A connecting rod 68 is fixed to one end of the connecting ring 66 near the fan 4. The other end of the connecting rod 68 is fixed to the output end of the motor. A baffle 69 is fixed to one end of the sealing blade 64 away from the fan 4.

[0037] The connecting ring 66 is limited to rotating on the cavity surface of the sleeve 62, and the transmission plate 65 swings on the cavity surface of the sleeve 62.

[0038] A through groove is provided at the end of the transmission plate 65 away from the fan 4, and the connecting column 67 slides within the through groove of the transmission plate 65. A through groove is provided at the end of the air duct 3 and the sleeve 62 near the collection box 7.

[0039] The connecting rod 63, the closing leaf 64, the transmission plate 65, the connecting column 67, and the baffle 69 are arranged in ten groups. The ten groups of connecting rod 63, closing leaf 64, transmission plate 65, connecting column 67, and baffle 69 are distributed in a circumferential shape with equal spacing. The connecting rod 68 and the baffle 69 are designed in an "L" shape.

[0040] In one embodiment of the present invention, the motor drives the connecting ring 66 to rotate via the "L"-shaped connecting rod 68, and the connecting column 67 slides in the through groove of the transmission plate 65, synchronously driving the closing leaf 64 to open or close. During operation, the "L"-shaped baffle 69 intercepts sand and gravel. After the machine stops, the closing leaf 64 closes to seal the wind tunnel 3, and the sand and gravel fall from the bottom through groove of the sleeve 62 into the collection box 7 below for collection.

[0041] Please see Figure 7 The cleaning component 8 includes an electric rotating ring 81, which is rotatably mounted on the outer surface of the air duct 3 near the nozzle 5. A guide shroud 82 is fixed on the outer surface of the electric rotating ring 81.

[0042] A connecting rod 83 is fixed in the middle of the electric rotating ring 81. A transmission plate 84 rotates on the end of the connecting rod 83 near the nozzle 5. A sponge block 86 is fixed on the end of the transmission plate 84 away from the connecting rod 83. An abutment rod 85 is fixed on the surface of the air duct 3 away from the nozzle 5.

[0043] The electric rotating ring 81 has a groove, and the connecting rod 83 is fixedly installed on the inner wall of the groove of the electric rotating ring 81. The transmission plate 84 rotates in the groove of the electric rotating ring 81. The transmission plate 84 has a through groove, and the abutment rod 85 slides within the through groove of the transmission plate 84.

[0044] The connecting rod 83, transmission plate 84, abutment rod 85 and sponge block 86 are arranged in twelve groups, and the twelve groups of connecting rod 83, transmission plate 84, abutment rod 85 and sponge block 86 are distributed in a circumferential shape at equal intervals.

[0045] In one embodiment of the present invention, when the electric rotating ring 81 revolves, the transmission plate 84 and the fixed abutment rod 85 cooperate to achieve rotation, the sponge block 86 wipes the outer wall of the nozzle 5 in a circumferential manner, and the guide shroud 82 receives the clean sewage to prevent sewage from flowing back into the air duct 3.

[0046] As one embodiment of the present invention, the method includes the following steps:

[0047] S1: Before operation, start the motor of the center rod 61, and drive the closed leaf 64 to open the ventilation duct through the connecting rod 68 and the connecting ring 66. Run the fan under no-load for 30 seconds to 1 minute. After there is no abnormality, turn on the water pump. The nozzle 5 atomizes water mist to work with the fan to complete the dust suppression.

[0048] S2: After finishing the work, turn off the water pump first, let the blower run idle for 2 minutes to dry the water mist in the pipeline, start the electric rotating ring 81, the abutment rod 85 drives the sponge block 86 to rotate and wipe the nozzle 5, and the guide shroud 82 blocks the sewage backflow.

[0049] S3: After cleaning is completed, the motor reverses to retract the sealing blades 64 to seal the air duct 3. The sand and gravel intercepted by the baffle 69 fall into the collection box 7 by gravity, completing the shutdown protection.

[0050] Working principle: Before operation, first start the drive motor at the end of the central rod 61 closest to the fan 4. The motor output drives the "L"-shaped connecting rod 68 to rotate synchronously. The connecting rod 68 pulls the connecting ring 66 to rotate circumferentially. The connecting post 67 on the connecting ring 66 slides within the through groove of the transmission plate 65, driving the ten sets of transmission plates 65 to deflect synchronously around the connecting rod 63. At the same time, the connecting rod 63 rotates synchronously, causing each set of sealing blades 64 and "L"-shaped baffles 69 to unfold outwards. The air duct at the front end of the air duct 3 is fully open. After starting the fan 4, run it unloaded for 30 seconds to 1 minute. After manually checking that there are no abnormal noises or violent vibrations, the fan 4 will enter the standby state. After the fan 4 is started, external dust and gravel are easily sucked into the air duct 3 by the airflow, which will cause damage to the fan blades and nozzles 5 of the fan 4. The baffle 69 in the unfolded state collects dust and gravel without obstructing the airflow. After the fan 4 speed stabilizes, turn on the water pump and the water flow is delivered to the nozzles 5 to atomize and form water mist. This water mist is sprayed from a distance with the airflow of the fan 4 to complete the dust adsorption and settling operation at the construction site.

[0051] After the operation is completed, first turn off the water supply pump, and keep the blower 4 running continuously under no-load for 2 minutes. Rely on the high-speed airflow to dry the residual water mist on the inner wall of the air duct 3, the surface of the nozzle 5, and the inside of the pipeline, so as to avoid long-term water accumulation that could cause pipeline corrosion and scale buildup and blockage of the nozzle 5. Simultaneously, when the water pump is turned off, the electric rotating ring 81 at the rear end of the nozzle 5 is started to rotate around the outer wall of the air duct 3, which drives the twelve sets of connecting rods 83 evenly distributed around the circumference to rotate synchronously. During the movement of the transmission plate 84, it continuously abuts against the abutment rod 85 fixed on the outside of the air duct 3, forcing the transmission plate 84 to rotate. The sponge block 86 at the end of the transmission plate 84 is in contact with the outer surface of the nozzle 5 and wipes it circumferentially to remove dust, mud and scale adhering to the outer wall of the nozzle 5. The guide cover 82 simultaneously blocks the sewage generated during wiping to prevent sewage from flowing back into the air duct 3.

[0052] After the cleaning process of nozzle 5 is completed, the motor at the center rod 61 rotates in the opposite direction. The connecting rod 68 drives the connecting ring 66 and the connecting column 67 to rotate in the opposite direction. The sealing blades 64 and the baffles 69 rotate and retract synchronously. Multiple sets of sealing blades 64 are spliced ​​to seal the front opening of the air duct 3. During the operation, small stones and gravel debris intercepted by the baffles 69 fall through the channel under the action of gravity and fall into the collection box 7 arranged directly below for centralized collection. This completes the shutdown protection and automatic collection of impurities of the whole machine, waiting for the next start-up operation.

[0053] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A dust suppression device for construction, comprising a base (1), characterized in that: The upper end of the base (1) is equipped with a support (2) via a motor. A duct (3) rotates in the middle of the support (2). A fan (4) is provided in the middle of the duct (3). A protective component (6) is provided at the front end of the fan (4). A nozzle (5) is provided at the rear end of the fan (4). A cleaning component (8) is provided at the rear end of the nozzle (5). A collection box (7) is fixed on the surface of the duct (3) near the base (1). The collection box (7) is located directly below the protective component (6). The protective component (6) includes a central rod (61), a motor is provided at the end of the central rod (61) near the fan (4), a sleeve (62) is fixed on the inner wall of the air duct (3), a connecting rod (63) is fixed between the central rod (61) and the sleeve (62), a sealing blade (64) is fixed on the connecting rod (63), a transmission plate (65) is fixed at the end of the connecting rod (63) away from the central rod (61) through the sleeve (62), and a connecting ring (66) is rotatably mounted on the cavity surface of the sleeve (62). The connecting ring (66) is fixed with several connecting posts (67) at one end near the air duct (3), and the connecting ring (66) is fixed with a connecting rod two (68) at one end near the fan (4). The other end of the connecting rod two (68) is fixed on the output end of the motor, and the sealing blade (64) is fixed with a baffle (69) at one end away from the fan (4).

2. The dust suppression device for construction as described in claim 1, characterized in that: The connecting ring (66) is limited to rotating on the cavity surface of the sleeve (62), and the transmission plate (65) swings on the cavity surface of the sleeve (62). The transmission plate (65) has a through groove at the end away from the fan (4), the connecting column (67) slides within the through groove of the transmission plate (65), and the air duct (3) and sleeve (62) have through grooves at the ends near the collection box (7).

3. A dust suppression device for construction according to claim 2, characterized in that: The connecting rod (63), the closing leaf (64), the transmission plate (65), the connecting column (67), and the baffle (69) are arranged in ten groups. The ten groups of connecting rod (63), closing leaf (64), transmission plate (65), connecting column (67), and baffle (69) are distributed in a circumferential shape with equal spacing. The connecting rod (68) is designed in an "L" shape, and the baffle (69) is designed in an "L" shape.

4. A dust suppression device for construction according to claim 3, characterized in that: The cleaning component (8) includes an electric rotating ring (81), which is rotatably mounted on the outer surface of the air duct (3) near the nozzle (5), and a flow guide (82) is fixed on the outer surface of the electric rotating ring (81). A connecting rod three (83) is fixed in the middle of the electric rotating ring (81). A transmission plate two (84) rotates on the end of the connecting rod three (83) near the nozzle (5). A sponge block (86) is fixed on the end of the transmission plate two (84) away from the connecting rod three (83). An abutment rod (85) is fixed on the surface of the air duct (3) away from the nozzle (5).

5. A dust suppression device for construction according to claim 4, characterized in that: The electric rotating ring (81) has a groove, the connecting rod three (83) is fixedly installed on the inner wall of the groove of the electric rotating ring (81), the transmission plate two (84) rotates in the groove of the electric rotating ring (81), the transmission plate two (84) has a through groove, and the abutting rod (85) slides within the through groove of the transmission plate two (84).

6. A dust suppression device for construction according to claim 5, characterized in that: The connecting rod three (83), transmission plate two (84), abutment rod (85) and sponge block (86) are set into twelve groups, and the twelve groups of connecting rod three (83), transmission plate two (84), abutment rod (85) and sponge block (86) are distributed in a circumferential shape at equal intervals.

7. A method of using a construction dust suppression device, applicable to the construction dust suppression device described in any one of claims 1-6, characterized in that: The method includes the following steps: S1: Before operation, start the motor of the center rod (61), and drive the closed leaf (64) through the connecting rod (68) and connecting ring (66) to open the ventilation duct. Run the fan under no-load for 30 seconds to 1 minute. After there is no abnormality, turn on the water pump and the nozzle (5) atomizes water mist to cooperate with the fan to complete the dust suppression. S2: After the operation is completed, turn off the water pump first, let the blower run idle for 2 minutes to dry the water mist in the pipeline, start the electric rotating ring (81), the abutment rod (85) drives the sponge block (86) to rotate and wipe the nozzle (5), and the guide shroud (82) blocks the sewage backflow; S3: After cleaning, the motor reverses to close the sealing blade (64) and seal the air duct (3). The sand and gravel intercepted by the baffle (69) fall into the collection box (7) by gravity, completing the shutdown protection.

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