Dust suppression spray device

Abstract

The present application relates to dust suppression device technical field, especially to a kind of dust suppression spray device, including shell body, fan and gas-liquid separation component, shell top left side is equipped with first water mist sprayer, for to inner pressure dust, middle air outlet passage is combined with air outlet plate to form interception air curtain and blow upward, obstruct dirty water overflow, right side annular air outlet cylinder utilizes high-speed airflow to carry out pneumatic shearing to second water mist sprayer, produce micron water mist and target to capture dust outward, dust-containing water mist is inhaled by middle lower air inlet negative pressure after sedimentation, pass through the micro tortuous flow channel formed by the wave baffle and the bending piece of internal inclined setting, realize free material gas-solid liquid separation by using inertia collision, the present application constructs the zoned dust fall and the pneumatic closed loop of upper spray lower suction, while realizing efficient targeted dust removal, ensure the clean dry of municipal road, solve the problem that existing device cannot consider construction site powerful dust suppression and outside road water accumulation prevention.

Description

Technical Field

[0001] This invention relates to the field of dust suppression equipment technology, and in particular to a dust suppression spray device. Background Technology

[0002] Currently, Chinese Patent Publication No. CN222445848U discloses a spray device for suppressing construction dust, including a mounting base fixed to the top of a bracket, a water outlet pipe fixed to the mounting base and connected to a water supply pipe, a spray pipe with a nozzle rotatably inserted into the water outlet pipe, an annular groove on the circumference of the water outlet pipe, a connecting pipe fixed to the spray pipe and sleeved with the water outlet pipe, a ball bearing engaged on the circumference of the connecting pipe, an adjusting cylinder screwed onto the outside of the connecting pipe, and a pressure ring fixed to the inner wall of the adjusting cylinder to press the ball bearing into the groove. This discloses a conventional spray device with a typical structure, which is usually used to distribute atomizing nozzles at the boundary of the construction site.

[0003] However, existing nozzles can usually only spray water mist in one direction. When installed at the boundary between the construction site and the municipal road, if the water flow rate is too high, a large amount of unevaporated water mist will drift across the boundary to the municipal road with the natural wind, causing muddy and waterlogged roads on the outer protected area, which seriously affects vehicle traffic and the urban environment. If the water flow rate is reduced, it will not be able to effectively suppress the heavy dust on the inner side of the construction site.

[0004] In addition, the water droplets sprayed by the existing device lose power after leaving the nozzle and are greatly affected by natural crosswinds. The water mist often fails to cover the dust floating in the air, resulting in low dust reduction efficiency.

[0005] In summary, existing construction dust spraying devices cannot simultaneously achieve both strong dust suppression on the inner side and keeping the road dry on the outer side. There is an urgent need for a device that can achieve dual-zone isolation and pneumatic atomization dust removal to solve the aforementioned industry pain points. Summary of the Invention

[0006] Therefore, in view of the above problems, the present invention proposes a dust suppression spray device, which solves the above technical problems.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A dust suppression spray device includes a housing body, an air inlet horizontally disposed on one side of the housing body, an air outlet channel disposed above the housing body, a gas-liquid separation component disposed on the housing body and located inside the air inlet, a fan disposed on the top of the housing body, an air outlet disposed on the top of the housing body, a first water mist nozzle disposed on the left side of the top of the housing body, a second water mist nozzle disposed on the right side of the top of the housing body, an annular air outlet duct disposed on the housing body and located at the position of the second water mist nozzle, and an adjustment mechanism disposed inside the annular air outlet duct for adjusting the air volume.

[0008] Furthermore, the top surface of the outer casing is provided with a vertically arranged air outlet plate at the air outlet, and the second water mist nozzle is inclined to the outer casing.

[0009] Furthermore, the gas-liquid separation component is composed of multiple spaced corrugated baffles, with an S-shaped tortuous channel for airflow to pass through between adjacent corrugated baffles. Multiple guide vanes are provided on the upper and lower surfaces of the corrugated baffles, and bent vanes spaced apart from the surface of the corrugated baffles are provided at the ends of the guide vanes. Adjacent bent vanes are arranged in parallel and spaced apart from each other.

[0010] Furthermore, a sludge collection pipe is provided at the bottom of the outer shell body, and the left end of the corrugated baffle is located above the sludge collection pipe.

[0011] Furthermore, the outer casing is provided with an inclined mounting block at the air inlet, the inclined mounting block is detachably connected to the gas-liquid separation component, and the gas-liquid separation component is inclined to the air inlet of the outer casing.

[0012] By adopting the aforementioned technical solution, the beneficial effects of the present invention are: This dust suppression spray device is designed with differentiated water mist nozzles to address the unique double-sided environment of the construction site boundary. The first water mist nozzle facing the inner side of the construction site uses a high flow rate and large particle size spray, which is effective against heavy dust. The second water mist nozzle facing the outer road uses a low flow rate and fine water mist spray. Through the strong airflow vertically upward from the central air outlet and the physical barrier of the air outlet plate, a composite isolation wall of air curtain and solid baffle is formed. This isolation wall locks the large amount of water generated by the first water mist nozzle inside the construction site, preventing it from being affected by natural crosswinds and avoiding dirty water splashing into the outer protection zone, thus ensuring the dryness of the municipal road.

[0013] Utilizing high-pressure air transported through an internal circulation system, the primary water mist from the second water mist nozzle is subjected to high-speed pneumatic shearing via a ring-shaped air outlet, generating suspended micron-sized water mist. This actively envelops PM2.5 and vehicle dust on the road. As the water mist, now heavier after enveloping the dust, falls, it is drawn into the device by the negative pressure generated by the central air inlet. This creates an air curtain trajectory in the outer protection zone, where water mist is sprayed upwards and polluted air is drawn downwards. This design not only prevents wind deflection but also avoids the micron-sized water mist from condensing into water on the road surface, achieving a clear airflow effect.

[0014] To address the problem of traditional baffles easily letting through fine dust particles, the gas-liquid separation component of this invention features staggered bent plates on a corrugated baffle plate, constructing multiple flow channels within an S-shaped tortuous channel. When the sludge-dust mixture passes through, its flow direction is changed multiple times. Larger sludge droplets and dust particles deviate from the airflow streamline due to inertia and are captured by impacting the liquid film on the surface of the bent plates. This structure relies on fluid dynamics and inertial collision to discharge high-humidity clean air without the need for a flexible filter element, completely eliminating the maintenance costs of frequent consumable replacements. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention.

[0016] Figure 2 This is a top view schematic diagram of the gas-liquid separation component structure of the present invention.

[0017] Figure 3 This is a partial structural schematic diagram of the present invention.

[0018] Figure 4 This is a schematic plan view of the annular air outlet and adjustment mechanism of the present invention.

[0019] Figure 5 This is a schematic diagram of the annular air outlet and adjustment mechanism of the present invention in use.

[0020] Figure 6 This is a schematic diagram of the structure of the regulating mechanism of the present invention in an exploded state.

[0021] Numbering on the map: 1. Outer shell; 2. Air inlet; 3. Air outlet; 4. Gas-liquid separation assembly; 5. Fan; 6. Air outlet; 7. First water mist nozzle; 8. Second water mist nozzle; 9. Annular air outlet duct; 10. Sludge collection pipe; 11. Air outlet plate; 12. Angled mounting block; 301. Rotating plate; 302. Extension shaft; 303. Shaft seat; 304. Bearing; 305. Transmission ring; 306. Connecting rod; 307. Universal ball joint; 308. Universal ball joint connecting rod; 309. Drive cylinder; 310. Wind speed sensor; 401. Corrugated baffle plate; 402. S-shaped tortuous channel; 403. Flow guide plate; 404. Bending plate; 901. Mounting bracket. Detailed Implementation

[0022] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0023] refer to Figures 1 to 6This embodiment provides a dust suppression spray device, including a housing body 1, an air inlet 2 horizontally disposed on one side of the housing body 1, an air outlet 3 disposed above the housing body 1, a gas-liquid separation assembly 4 disposed on the housing body 1 within the air inlet 2, a fan 5 disposed on the top of the housing body 1, an air outlet 6 disposed on the top of the housing body 1, a first water mist nozzle 7 disposed on the top left side of the housing body 1, a second water mist nozzle 8 disposed on the top right side of the housing body 1, an annular air outlet duct 9 disposed on the housing body 1 at the position of the second water mist nozzle 8, and an annular air outlet duct 9 disposed on the housing body 1 at the position of the second water mist nozzle 8. An adjustment mechanism for regulating the air volume is located inside the annular air outlet duct 9. The air outlet 6 is connected to the annular air outlet duct 9. The outer shell body 1 is divided into an inner dust zone and an outer protection zone by the air outlet channel 3. The outer protection zone faces the municipal road, and the inner dust zone faces the construction site. The air inlet 2 of the outer shell body 1 and the annular air outlet duct 9 are connected to form an inner circulation air duct. The first water mist nozzle 7 is located near the inner dust zone, and the second water mist nozzle 8 is located near the outer protection zone. The annular air outlet duct 9 is obliquely upward and faces the outer protection zone.

[0024] In use, the first water mist nozzle 7 and the second water mist nozzle 8 are connected to the external water supply pipe. The first water mist nozzle 7 sprays water mist towards the inner dust area, while the second water mist nozzle 8 faces the outer protection zone. When the fan 5 is running, the airflow from the air outlet 3 is vertically upward, which blocks the water mist sprayed by the first water mist nozzle 7. Since there is more dust at the construction site in the inner dust area, the first water mist nozzle 7 is a high-flow, large-particle-size water mist nozzle, while the second water mist nozzle 8, facing the road in the outer protection zone, is a low-flow, fine water mist nozzle. The air outlet plate 11 outside the air outlet 3 blocks the first water mist nozzle 7, which can prevent the road in the outer protection zone from becoming wet.

[0025] Part of the air is ejected through the annular exhaust duct 9, and the second water mist nozzle 8 sprays primary water mist. The fan 5 blows part of the air through the annular exhaust duct 9 towards the second water mist nozzle 8 to atomize the water droplets a second time. The primary water mist is atomized into even smaller micron-sized water mist by secondary aerodynamic shearing, greatly increasing the contact area between the water mist and the tiny dust particles in the air. The high-speed water mist and airflow no longer press against the ground, but are shot towards the outer protected area, forming an inward-sloping water mist barrier. This barrier will further intercept the dust blown from the dust-generating area inside the construction site, and also intercept the dust raised by passing vehicles, improving dust suppression efficiency. It can also prevent the water mist sprayed from the second water mist nozzle 8 from being affected by natural wind and drifting in other directions, thus failing to contact and intercept the dust in the outer protected area. The dust in the outer protected area becomes wet and heavier and begins to fall. At this time, it is precisely towards the outer protected area that the water mist is intercepted. The air inlet 2 draws the air into the outer shell 1. In conjunction with the annular air outlet 9, the primary water mist, which is easily dispersed by natural wind, is drawn into the air inlet 2 along with the dust suspended in the surrounding air under the pull of the negative pressure at the bottom. This forms a closed-loop dust-reducing air curtain circulation trajectory outside the equipment. During the settling process, the micron-sized water mist containing dust is actively drawn into the outer shell 1 by the fan 5 and the air inlet 2, preventing the micron-sized water mist from accumulating into water on the municipal road surface in the outer protection zone. This ensures that the outer protection zone is clean and dry. After the air is passed through the gas-liquid separation component 4, the mud particles and large water droplets in the air are intercepted by inertia and sink downwards. The airflow is transformed into a high-humidity dust removal air with a certain pressure and is circulated and transported to the top along the inner circulation air duct. This locks the large amount of water generated by the first water mist nozzle 7 inside the construction site while keeping the outer protection zone clean and dry.

[0026] The top surface of the outer shell 1 is provided with a vertically arranged air outlet plate 11 at the air outlet 6. The second water mist nozzle 8 is inclined to the outer shell 1. The airflow is guided by the air outlet plate 11. The airflow direction of the air outlet channel 3 is vertically upward. The airflow direction of the annular air outlet 9 is obliquely directed to the upper part of the municipal road in the outer protection zone. The airflow pneumatically shears the water droplets sprayed by the second water mist nozzle 8 to form secondary atomized water mist that is shot towards the municipal road in the outer protection zone. The air outlet plate 11 provides physical isolation, and the air is blown out through the air outlet 6. This allows the first water mist nozzle 7 and the second water mist nozzle 8 to spray in separate sections. The first water mist nozzle 7 is less affected by the wind direction and blown out of the air outlet plate 11.

[0027] The gas-liquid separation component 4 is composed of multiple corrugated baffles 401 spaced apart. An S-shaped tortuous channel 402 for airflow to pass through is formed between adjacent corrugated baffles 401. Multiple guide vanes 403 are provided on the upper and lower surfaces of the corrugated baffles 401. Bending vanes 404 spaced apart from the surface of the corrugated baffles 401 are provided at both ends of the guide vanes 403. Adjacent bending vanes 404 are arranged in parallel and spaced apart from each other.

[0028] When the mud-ash mixed gas drawn in by the blower 5 passes through the S-shaped tortuous channel 402, due to the spacing between the bending plates 404, the mud-ash mixed gas passes through the tortuous path between the bending plates 404. Larger dust particles deviate from the streamline due to inertia and impact the liquid film on the surface of the bending plates 404. Through the multi-bending flow channel design, the number of changes in airflow direction is increased. The inertia of the droplets causes them to impact and adhere to the surface of the corrugated baffle plate 401 and the bending plates 404. The high-speed impact of the mud-ash mixed gas with the rigid corrugated baffle plate 401 and the bending plates 404 causes the sludge and droplets, which have a greater gravity than air, to impact and adhere to the surface of the corrugated baffle plate 401. Due to inertial collisions, large particles of mud and heavy water droplets converge into sludge. After discharge, the mud-ash mixed gas is transformed into high-humidity clean air with a certain pressure. Since the corrugated baffle plate 401 and the bending plates 404 are inclined, they will drip into the sewage collection pipe 10 under the action of gravity.

[0029] The bottom of the outer shell 1 is provided with a sludge collection pipe 10. The left end of the corrugated baffle 401 is directly connected to the sludge collection pipe 10. The sludge collection pipe 10 is located below the discharge end of the corrugated baffle 401. Large particles of mud and heavy water droplets gather into slurry and drip directly down the surface of the corrugated baffle 401 under the action of gravity and are collected in the sludge collection pipe 10 for discharge. This prevents dirty water from overflowing or accumulating at the bottom of the equipment and ensures the hygiene and smooth flow of the internal air duct system.

[0030] The outer casing 1 is provided with an inclined mounting block 12 at the air inlet 2. The inclined mounting block 12 is detachably connected to the gas-liquid separation component 4. The gas-liquid separation component 4 is inclined to the air inlet 2 of the outer casing 1.

[0031] After the gas-liquid separation component 4 is installed on the inclined mounting block 12, it will be in an inclined state. When the air passes through the gas-liquid separation component 4, the air collision area is larger. Compared with the parallel or vertical setting, the filtration effect is better. Furthermore, under the influence of gravity, due to the inclined setting of the bottom of the gas-liquid separation component 4, the mud discharged from the left side will automatically drip down into the sewage pipe.

[0032] The annular air outlet duct 9 is provided with a mounting bracket 901 in the middle. The adjustment mechanism includes multiple rotating plates 301 rotatably disposed between the annular air outlet duct 9 and the mounting bracket 901, an extension shaft 302 extending to one side of the rotating plates 301 and passing through the outside of the annular air outlet duct 9, a bearing 303 disposed on the outside of the annular air outlet duct 9 and connected to the extension shaft 302, a bearing 304 disposed on the outside of the extension shaft 302, a transmission ring 305 slidably disposed on the top surface of each bearing 304, a connecting rod 306 fixed on the outside of the extension shaft 302, a universal ball joint 307 disposed on the transmission ring 305, a universal ball joint connecting rod 308 movably connected to the connecting rod 306 and the universal ball joint 307, and a drive cylinder 309 for driving the transmission ring 305 to rotate. The drive cylinder 309 is rotatably disposed on the annular air outlet duct 9. On the outside of the air duct 9, the push rod inside the drive cylinder 309 is rotatably connected to the transmission ring 305. When the push rod inside the drive cylinder 309 is not extended, the rotating plates 301 are in contact with each other, blocking the annular air duct 9. After the push rod inside the drive cylinder 309 extends, the transmission ring 305 rotates under the support of the bearing 304. The rotation of the transmission ring 305 drives the universal ball joint 307 to move. The universal ball joint 307 drives the connecting rod 306 to rotate through the universal ball joint connecting rod 308. The connecting rod 306 drives the rotating plates 301 to rotate gradually through the extension shaft 302. The rotating plates 301 inside the annular air duct 9 will gradually rotate, and gaps will be formed between the rotating plates 301. As the rotation angle of the rotating plates 301 increases, the gaps between the rotating plates 301 also become larger, thereby adjusting the air volume of the annular air duct 9.

[0033] A wind speed sensor 310 is fixedly installed on the outer side of the outer shell 1 for real-time acquisition of the lateral wind speed signal of the external environment. When the device of this application is used, it is connected to an external microcontroller. The external microcontroller is electrically connected to the wind speed sensor 310, the fan 5 and the drive cylinder 309 of the adjustment mechanism.

[0034] When the wind speed sensor 310 detects that the external crosswind speed is lower than the set first-level threshold light wind environment (corresponding to wind speed level 1-3), the microcontroller controls the drive cylinder 309 to fully extend the push rod, and the transmission ring 305 rotates to drive each rotating plate 301 to rotate to 90 degrees, that is, the surface of the rotating plate 301 is parallel to the air outlet direction. At this time, the obstruction surface of the rotating plate 301 to the airflow is minimal, the effective flow cross-sectional area inside the annular air outlet duct 9 is maximized, and the wind resistance is minimized. The system blows out the internal high-pressure airflow in a straight line with the maximum air volume, achieving the longest range. Combined with the second water mist nozzle 8, it achieves large-area, long-distance, rapid water mist coverage over municipal roads, with the highest dust reduction efficiency. When the wind speed sensor 310 detects that the external crosswind speed is between the first and second thresholds (corresponding to wind speed levels 4-6), and the water mist is easily blown off course in a strong crosswind environment, the microcontroller controls the push rod part of the drive cylinder 309 to retract. Through the transmission ring 305, the universal ball joint 307 and the connecting rod, the rotating plates 301 are driven to gradually close and tilt to between 45 degrees and 75 degrees. At this time, a narrow oblique gap is formed between the rotating plates 301. The airflow passing through the gap is forced to change its direction and forms a strong swirling jet at the outlet of the annular air outlet 9. Although the total air volume decreases slightly due to the reduced cross-sectional area, the tangential velocity of the angled airflow increases. The high-speed rotating airflow generates extremely strong shearing force, which thoroughly pulverizes the water droplets of the second water mist nozzle 8 into finer water mist. This airflow obtains extremely strong aerodynamic rigidity, ensuring that the direction of the water mist jet is not blown off course by the crosswind, thus achieving precise dust suppression in harsh environments.

[0035] When the wind speed sensor 310 detects that the external crosswind speed exceeds the secondary threshold (corresponding to wind speed above level 7), which could easily cause a large volume of water spray from the inner dust area to splash onto the municipal road, the microcontroller immediately controls the drive cylinder 309 to fully retract the push rod to the initial position. Each rotating plate 301 rotates synchronously to 0 degrees and fits together to physically block the annular air outlet 9. At this time, the high-pressure airflow in the inner circulation duct cannot be ejected from the annular air outlet 9, and the internal wind pressure is guided to the top air outlet 6. This causes the momentum of the vertical intercepting air curtain sprayed upward from the air outlet 6 to reach its peak instantly, forming an impenetrable rigid high-pressure air wall above the equipment. This air wall can withstand the impact of strong winds and ensure that the large volume of water mist sprayed from the first water mist nozzle 7 does not overflow the boundary of the air outlet plate 11 onto the municipal road, further preventing the road from becoming wet.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0037] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0040] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A dust suppression spray device, characterized in that, It includes an outer shell body (1), an air inlet (2) horizontally disposed on one side of the outer shell body (1), an air outlet channel (3) disposed above the outer shell body (1), a gas-liquid separation component (4) disposed on the outer shell body (1) and located inside the air inlet (2), a fan (5) disposed on the top of the outer shell body (1), an air outlet (6) disposed on the top of the outer shell body (1), a first water mist nozzle (7) disposed on the left side of the top of the outer shell body (1), a second water mist nozzle (8) disposed on the right side of the top of the outer shell body (1), an annular air outlet duct (9) disposed on the outer shell body (1) and located at the position of the second water mist nozzle (8), and an adjustment mechanism disposed inside the annular air outlet duct (9) for adjusting the air volume.

2. The dust suppression spray device according to claim 1, characterized in that: The top surface of the outer shell body (1) is provided with a vertically arranged air outlet plate (11) at the air outlet (6), and the second water mist nozzle (8) is inclined to the outer shell body (1).

3. The dust suppression spray device according to claim 2, characterized in that: The gas-liquid separation component (4) is composed of multiple corrugated baffles (401) spaced apart. An S-shaped tortuous channel (402) for airflow to pass through is formed between adjacent corrugated baffles (401). Multiple guide vanes (403) are provided on the upper and lower surfaces of the corrugated baffles (401). Bending vanes (404) spaced apart from the surface of the corrugated baffles (401) are provided at both ends of the guide vanes (403). Adjacent bending vanes (404) are arranged in parallel and spaced apart from each other.

4. The dust suppression spray device according to claim 3, characterized in that: The bottom of the outer shell body (1) is provided with a sewage collection pipe (10), and the left end of the corrugated baffle (401) is located above the sewage collection pipe (10).

5. A dust suppression spray device according to claim 4, characterized in that: The outer shell body (1) is provided with an inclined mounting block (12) at the air inlet (2). The inclined mounting block (12) is detachably connected to the gas-liquid separation component (4). The gas-liquid separation component (4) is inclined to the air inlet (2) of the outer shell body (1).

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