Spraying dust-settling system for concrete factory and use method of spraying dust-settling system

Abstract

The invention relates to a spraying dust-settling system for a concrete factory and a using method thereof, and relates to the technical field of environmental protection systems of concrete factories. The spraying heads are arranged at the top of the plant and provided with air inlet mechanisms, the bottom of the plant is provided with an empty space with a breathable partition plate, and the side of the plant is provided with an air exhaust mechanism and an air suction mechanism; the spraying frame can move through a guide rail, and a swing mechanism is arranged to optimize the spraying range. An air outlet of the air exhaust mechanism is provided with a detachable dust blocking bag with a blocking strip, the bottom wall of the overhead layer obliquely leads to the bag washing pool, and the bag washing barrel has an automatic cleaning function. The all-directional and high-efficiency spraying dust fall effect is achieved, the dust removal strength of a specific area can be improved according to needs, meanwhile, the dust blocking device is convenient to maintain and clean, and the air quality in a concrete factory area is effectively improved.

Description

Technical Field

[0001] This application relates to the technical field of dust suppression devices, and in particular to a spray dust suppression system for a concrete plant and its usage method. Background Art

[0002] The concrete production plant is an indispensable part of the modern construction industry. With the acceleration of the urbanization process, the demand for concrete production is increasing day by day. However, during the concrete production process, due to the frequent entry and exit of sand trucks, cement trucks, and concrete trucks, it will not only cause site sanitation problems, but also generate a large amount of dust, seriously polluting the environment and posing a threat to the health of workers. To address this challenge, the spray dust suppression system has emerged as one of the important facilities to ensure the air quality in the plant. Such systems significantly improve the quality of the working environment in the plant by effectively capturing and settling suspended particulate matter in the air.

[0003] In the related art, the method of spray dust suppression in a concrete plant is usually to set a number of atomizing nozzles on the top wall of the surrounding wall of the plant area, and use water mist to spray the inside of the plant area. In addition, in order to increase the coverage area, fans are also installed on the surrounding wall, and the water mist is blown towards the middle of the plant area by the fans to expand the dust suppression coverage area without changing the amount of fog output.

[0004] The above-mentioned related art has the following defects: lack of effective control ability for local key dust sources. Specifically, in the actual working scenario, the dust level in each area of the plant area will change dynamically. For example, when discharging materials in a certain area, a large amount of dust will be generated. Although the related art can improve the overall spray coverage area of the plant area, it cannot adjust the spray intensity of a specific area, so it needs to be improved. Summary of the Invention

[0005] In order to achieve the adjustment of the spray intensity in a specific area of the plant area, this application provides a spray dust suppression system for a concrete plant and its usage method.

[0006] A spray dust suppression system for a concrete plant includes a number of spray heads arranged on the top of the workshop. An air inlet mechanism is arranged on the top of the workshop. An overhead floor is arranged at the bottom of the workshop, and a breathable partition is arranged on the top of the overhead floor. An exhaust mechanism is arranged on the side of the overhead floor, and a number of air suction mechanisms are arranged on the breathable partition.

[0007] By adopting the above technical solution, in the daily spraying scenario, several spray heads spray water mist to spray and remove dust inside the factory building; when it is necessary to enhance the dust removal intensity in a specific area, the air suction mechanism below the specific part is opened to suck the air flow above and within the circumferential range of the area into the overhead layer from the specific part, and finally discharged from the overhead layer through the exhaust mechanism. During this process, the air intake mechanism continuously supplements the air at the top of the factory building into the factory building. By causing the air above the area to be mixed with water mist and sucked into the overhead layer in a funnel shape through the air suction mechanism at the specific part, the water mist amount at a specific position near the overhead layer can be made more concentrated, thereby enhancing the dust removal effect at the specific position.

[0008] In addition, the air intake mechanism, the exhaust mechanism, and several air suction mechanisms can also be kept open in the daily spraying scenario to promote the more rapid sinking of the overall air and water mist inside the factory building, thereby increasing the upper limit of the specifications of the spray heads that the factory building can withstand, and further increasing the upper limit of the overall dust removal effect. When it is necessary to enhance the dust removal intensity in a specific area, the air suction mechanism in the specific area is maintained in the open state, and the air suction mechanisms in other areas are closed, which can also make the water mist in the specific area in a funnel shape and thus more concentrated, thereby enhancing the dust removal effect at the specific position.

[0009] Preferably, a pair of guide rails are provided on the top of the factory building, several spray racks are arranged between the two guide rails, and several of the spray heads are arranged on the corresponding spray racks. The spray racks are provided with traveling mechanisms for moving along the guide rails.

[0010] By adopting the above technical solution, the spray racks can move along the guide rails, thereby driving the spray heads to perform spraying operations at different positions on the top of the factory building. This design makes the coverage range of the spray heads no longer fixed, and the spraying area can be flexibly adjusted according to actual needs, improving the adaptability and efficiency of the spray dust removal system. Especially when it is necessary to strengthen the spraying in a specific area, more spraying resources can be concentrated on the target area by moving the spray racks, further enhancing the dust removal effect on this area.

[0011] Preferably, a swing mechanism is arranged between the spray rack and the spray head.

[0012] By adopting the above technical solution, the swing mechanism can enable the spray head to change the angle relative to the spray frame, thereby adjusting the spraying direction and coverage range of the water mist. This design not only improves the flexibility of the spraying system but also better adapts to the dust reduction requirements of different areas. Especially when stronger dust removal is needed in a specific area, the swing mechanism can accurately control the water mist distribution to further enhance the dust removal effect in this area. Specifically, when stronger dust removal is required for a specific area, several spray heads at the top and on both sides of the area can be adjusted. The spray heads at the top spray directly vertically downward, and the spray heads on both sides can be set to swing in the same or opposite rhythms, or the spray heads on both sides can be adjusted to a fixed angle state tilted towards the top spray head. All specific situations can be adjusted according to needs, which is more flexible.

[0013] Preferably, a dust retaining bag is detachably arranged at the air outlet of the exhaust mechanism, and several staggered baffles are arranged inside the dust retaining bag.

[0014] By adopting the above technical solution, arranging a dust retaining bag at the air outlet of the exhaust mechanism can effectively intercept the dust particles carried in the air discharged from the overhead layer and avoid secondary pollution. Several staggered baffles are arranged inside the dust retaining bag, which further increases the tortuosity of the air flow path and improves the filtration efficiency of fine particulate matter. Especially for the humid air flow mixed with dust flocs and water mist, the droplets incorporating the dust flocs will be adsorbed by the baffles after touching the baffles, making the baffles gradually wet, and then the wet baffles have a better adhesion effect on flying dust.

[0015] Preferably, the dust retaining bag includes a frame and a bag body arranged outside the frame, and the baffle includes a structural frame and a cloth strip connected inside the structural frame, and the structural frame is connected to the frame.

[0016] By adopting the above technical solution, the dust retaining bag is composed of a frame and a bag body, which can effectively intercept the particulate matter in the dust-containing gas discharged from the exhaust mechanism and avoid secondary pollution. Among them, the design of the baffle including a structural frame and a cloth strip further enhances the blocking effect on dust, and at the same time, the connection between the structural frame and the frame ensures the stability of the overall structure, facilitating installation and disassembly.

[0017] Preferably, the structural frame is rotatably connected to the frame, and an inner support elastic member is arranged between the structural frame and the frame.

[0018] By adopting the above technical solution, the rotational connection between the structural frame and the frame in cooperation with the design of the inner support elastic member enables several baffles to maintain a staggered state when the dust retaining bag is placed horizontally, effectively increasing the dust filtration path and efficiency; at the same time, when the dust retaining bag is placed vertically, the structural frame can swing downward against the action of the inner support elastic member and fit with the inner wall of the dust retaining bag, greatly facilitating the cleaning work inside the dust retaining bag, especially at the bottom, and improving the maintenance convenience.

[0019] Preferably, the bottom wall of the overhead floor is inclined and a bag washing pool is provided at the bottommost part.

[0020] By adopting the above technical solution, the inclined bottom wall of the overhead floor can guide the water flow and dust impurities to converge at the lowest point, and the bag washing pool provided at the bottommost part facilitates the centralized treatment of the collected dust impurities, effectively improving the cleaning efficiency and reducing the maintenance workload.

[0021] Preferably, a bag washing barrel is rotatably provided inside the bag washing pool, and the bag washing pool is further provided with a rotating mechanism for driving the bag washing barrel to rotate.

[0022] By adopting the above technical solution, the rotatable bag washing barrel and the rotating mechanism for driving the bag washing barrel provided inside the bag washing pool can enable the dust-catching bag to fully contact the water flow as the bag washing barrel rotates during the cleaning process, thereby significantly improving the cleaning efficiency and cleanliness of the dust-catching bag.

[0023] Preferably, a slag discharge pipe is provided at the center of the bottom of the bag washing barrel, and a slag discharge valve is provided on the slag discharge pipe.

[0024] By adopting the above technical solution, the arrangement of the slag discharge pipe and the slag discharge valve can conveniently discharge the impurities in the bag washing barrel. Specifically, the slag discharge pipe is located at the center of the bottom of the bag washing barrel, which is conducive to collecting and precipitating solid particles and other impurities, and the setting of the slag discharge valve can control the slag discharge process to avoid the premature outflow of impurities during the cleaning process, resulting in a reduction in the cleaning efficiency. This design not only improves the cleaning effect of the bag washing barrel but also simplifies the operation process and reduces the need for manual intervention. After the cleaning is completed, the rotating water flow will easily gather sediment and other residues to the center, and at this time, discharging through the slag discharge pipe can achieve a greater efficiency in cleaning the water body.

[0025] A usage method of a spray dust reduction system for a concrete factory area In the daily spray scenario, several spray heads spray water mist to spray and remove dust inside the factory building; When it is necessary to enhance the dust removal intensity in a specific area, the air flow above and within the circumferential range of the specific area is sucked into the overhead floor from the specific part by opening the air suction mechanism below the specific part, and finally discharged from the overhead floor through the exhaust mechanism. During this process, the air inlet mechanism continuously supplements the air at the top of the factory building into the factory building.

[0026] By adopting the above technical solution, in daily spraying scenarios, several spray heads spray water mist to evenly cover the internal space of the factory, which can effectively reduce the dust concentration in the entire factory and play a comprehensive dust removal role. When it is necessary to increase the dust removal intensity in a specific area, the suction mechanism under the specific part is opened to form a local negative pressure environment, and the air containing water mist above and around the area is sucked into the overhead layer and discharged through the exhaust mechanism. At the same time, the air intake mechanism replenishes fresh air into the interior of the factory, thereby achieving a high concentration of water mist in a specific area, significantly enhancing the dust removal effect in the area. In addition, this design can also flexibly respond to different dust conditions in different areas, improving the adaptability and practicality of the system.

[0027] In summary, the present application includes at least one of the following beneficial technical effects: 1. By setting an air inlet mechanism on the top of the plant, an overhead layer with an air suction mechanism at the bottom, and an exhaust mechanism on the side, the spray intensity in a specific area can be precisely adjusted, effectively solving the problem that the existing technology cannot perform enhanced treatment on local key dust sources; 2. In daily spraying scenarios, the system can promote the rapid sinking of air and water mist inside the factory, improve the upper limit of the overall dust removal effect, and support the application of higher-specification sprinkler heads, thereby enhancing the overall applicability and dust reduction efficiency of the system; 3. When it is necessary to enhance the dust removal effect in a specific area, a funnel-shaped airflow is formed by opening the suction mechanism at the corresponding position, so that the water mist is more concentrated in the target area, significantly improving the dust removal capacity and work efficiency in the area. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application; Figure 2 This is a structural diagram for reflecting the connection relationship between the air inlet mechanism and the factory building in the embodiment of the present application; Figure 3 This is a structural diagram for illustrating the connection relationship between the sprinkler head and the plant in the embodiment of the present application; Figure 4 This is a schematic diagram of the state after the angle of the spray head is adjusted in the embodiment of the present application; Figure 5 This is a structural schematic diagram for illustrating the connection relationship between the air suction mechanism and the air permeable partition in the embodiment of the present application; Figure 6 This is a structural schematic diagram for illustrating the connection relationship between the overhead layer and the bag washing bucket in the embodiment of the present application; Figure 7 for Figure 6 The cross-sectional view of the middle dust bag along the AA direction is used to show the connection relationship between the stop bar and the dust bag in the horizontal placement state; Figure 8This is a schematic structural diagram for embodying the connection relationship between the baffle strip and the dust-catching bag in the vertically placed state in the embodiments of the present application; Figure 9 This is a schematic structural diagram for embodying the connection relationship between the bag-washing barrel and the dust-catching bag in the embodiments of the present application; Figure 10 This is a schematic diagram of the water mist flow direction in the daily spraying scenario in the embodiments of the present application Figure 11 This is a schematic diagram of the water mist flow direction when the dust removal intensity needs to be increased in a specific area in the embodiments of the present application.

[0029] In the figure: 1. Workshop; 10. Aerial layer; 11. Ventilation partition; 12. Guide rail; 13. Spraying rack; 14. Traveling mechanism; 15. Spraying head; 16. Swing mechanism; 17. Cross beam; 2. Air inlet mechanism; 21. Air inlet cylinder; 22. Rain shield; 3. Air suction mechanism; 4. Exhaust air mechanism; 5. Dust-catching bag; 51. Frame; 52. Bag body; 520. Ventilation holes; 53. Inner support elastic member; 6. Baffle strip; 61. Structural frame; 62. Cloth strip; 7. Bag-washing barrel; 71. Rotating mechanism; 72. Slag discharge pipe; 73. Slag discharge valve. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings. The described embodiments are only possible technical implementations of the present invention, not all possible implementations. Those skilled in the art can completely combine the embodiments of the present invention to obtain other embodiments without creative labor, and these embodiments are also within the protection scope of the present invention. Embodiment

[0031] Refer to Figure 1, an embodiment of the present application provides a spray dust suppression system for a concrete plant area, including a factory building 1. The top of the factory building 1 is provided with an air inlet mechanism 2. The bottom of the factory building 1 is provided with a breathable partition 11, and an overhead layer 10 is formed below the breathable partition 11. The breathable partition 11 is a concrete slab with prefabricated holes. The air in the overhead layer 10 and the interior of the factory building 1 circulates through a suction mechanism 3, and the suction mechanism 3 is installed on the breathable partition 11. A discharge mechanism 4 is also provided on the side of the overhead layer 10, and the discharge mechanism 4 is used to discharge the air in the overhead layer 10 out of the factory building 1. The overall air circulation route is: the air at the top of the factory building 1 enters the interior of the factory building 1 from the air inlet mechanism 2, and then is sucked downward by the suction mechanism 3 to be sucked into the overhead layer 10, and finally discharged from the factory building 1 through the discharge mechanism 4. A dust interception bag 5 is also installed at the air outlet of the discharge mechanism 4 on the outer side wall of the factory building 1, which is used to intercept and filter the dust and floc particles in the air flow. A pair of guide rails 12 are also provided above the interior of the factory building 1. A number of spray racks 13 are arranged between the two guide rails 12. The spray racks 13 are provided with a traveling mechanism 14 for moving along the guide rails 12. The traveling mechanism 14 is in the form of a motor cooperating with traveling wheels, and the position of the spray racks 13 can be moved through remote control. A number of spray heads 15 are rotatably arranged on the spray racks 13. During the air flow process, the spray heads 15 synchronously spray water mist, so as to accelerate the downward movement of the water mist by the air flow.

[0032] Refer to Figure 2 , the external form of the air inlet mechanism 2 is an air inlet cylinder 21 installed on the top of the factory building 1, and a rain shield 22 is also provided on the top of the air inlet cylinder 21. The edge of the rain shield 22 extends downward to be suspended and buckled on the top of the air inlet cylinder 21. The core components of the air inlet mechanism 2 are installed inside the air inlet cylinder 21, specifically a centrifugal fan and its supporting controller. The centrifugal fan can be selected in the form of a single-phase or three-phase AC motor, and the power is determined according to the total air supply demand. The controller is recommended to use a PLC programming module to achieve remote start and stop control.

[0033] Refer to Figure 3 and Figure 4 , a swing mechanism 16 is provided between the spray rack 13 and the spray head 15. The swing mechanism 16 is a motor cooperating with a gear structure to realize a small rotation of the spray rack 13, so as to finally realize the reciprocating swing or specific angle adjustment of a number of spray heads 15 in the same row. In addition, the spray head 15 mainly includes a standard cylindrical atomizing nozzle and a flat fan-shaped nozzle. The former is made of stainless steel and is suitable for a large space range; the latter is mainly processed with plastic and is suitable for use in narrow areas. Both are installed through a threaded interface and are equipped with a sealing ring to prevent water leakage.

[0034] Refer to Figure 5, the overhead layer 10 serves as an important physical carrier to undertake the function of converging humid gas. It has a sufficient height difference to ensure smooth air flow, and its surface is sprayed with an anti-corrosion coating to extend its service life. In terms of internal structure, multiple groups of parallel beams 17 are set to support the balanced weight distribution, and at the same time, necessary maintenance channels are reserved to facilitate later maintenance operations. The breathable partition 11 is located directly above the overhead layer 10 to play a role in separating the upper and lower spaces. The main material is preferably cut and spliced from high-strength steel plates, and the surface is perforated to ensure good permeability. The air suction mechanism 3 is dispersedly arranged at each key node below the breathable partition 11 to exert a local suction effect. Its implementation principle relies on a small turbocharger to drive the impeller to rotate at high speed to generate a negative pressure effect, driving the surrounding air together with tiny particulate matter to be guided into the overhead layer 10.

[0035] Refer to Figure 6 , a dust-catching bag 5 is provided at the air outlet end of the exhaust mechanism 4. The dust-catching bag 5 includes a frame 51 and a bag body 52 arranged outside the frame 51. A breathable hole 520 is provided at the center of the bottom of the bag body 52 so that when the air flow is large, it can relieve pressure from the breathable hole 520 and circulate in time.

[0036] Refer to Figure 7 , a number of staggered bars 6 are also provided inside the dust-catching bag 5. The bar 6 includes a structural frame 61 and a cloth strip 62 connected inside the structural frame 61. The structural frame 61 is rotatably connected to the frame 51, and an inner support elastic member 53 is provided between the structural frame 61 and the frame 51. The inner support elastic member 53 is a spring. When the frame 51 is placed horizontally, a number of structural frames 61 are also arranged horizontally, and under the action of the inner support elastic member 53, the bar 6 can be easily pushed so that a number of bars 6 are kept in a staggered state.

[0037] Refer to Figure 8 , when the frame 51 is disassembled and placed vertically, a number of structural frames 61 will swing downward under their own gravity to overcome the action of the inner support elastic member 53 and be roughly attached to the inner wall of the dust-catching bag 5. In this state, it is convenient to clean the inside of the dust-catching bag 5, especially the bottom, which is more convenient. So that the particles originally adhered to the side wall of the bar 6 can naturally fall off.

[0038] Refer to Figure 6 and Figure 9, the bottom wall of the overhead layer 10 is inclined, and the end close to the air outlet of the exhaust mechanism 4 is the lowest point. A bag washing pool is dug downward from the bottom of the overhead layer 10. Inside the bag washing pool, a bag washing barrel 7 is rotatably arranged through a bearing seat. The bag washing barrel 7 can receive the water flow converging from the bottom wall of the overhead layer 10. In addition, the bag washing pool is also provided with a rotating mechanism 71 for driving the bag washing barrel 7 to rotate. The rotating mechanism 71 is in the form of a motor cooperating with a synchronous belt to realize the rotation of the bag washing barrel 7. When the dust-catching bag 5 needs to be cleaned, the dust-catching bag 5 is disassembled and placed vertically into the bag washing barrel 7. The rotating mechanism 71 is used to drive the bag washing barrel 7 to rotate reciprocally, so as to realize the flushing of the dust-catching bag 5. After the flushing is completed, the rotating mechanism 71 can be used for one-way rotation to make the water body form a vortex, and then let it stop naturally. The water body after natural stop will cause larger slag and other particles to converge at the center of the bag washing barrel 7. Correspondingly, in this embodiment, a slag discharge pipe 72 is arranged at the center of the bottom of the bag washing barrel 7, and a slag discharge valve 73 is arranged on the slag discharge pipe 72. Therefore, by opening the slag discharge valve 73 in the final state, the larger slag particles at the center of the bag washing barrel 7 can be discharged, leaving a relatively clean water body. It is also possible to drain all the water bodies as a whole according to a fixed cycle for overall replacement.

[0039] The implementation principle of this embodiment is as follows: In the daily spraying scenario, several spray heads 15 spray water mist to spray and dust the interior of the workshop 1; when it is necessary to improve the dust removal intensity of a specific area, the air flow above and within the circumferential range of the specific area is sucked into the overhead layer 10 from the specific part by opening the air suction mechanism 3 below the specific part, and finally discharged from the overhead layer 10 through the exhaust mechanism 4. During this process, the air inlet mechanism 2 continuously supplements the air at the top of the workshop 1 into the workshop 1. By causing the air above the area to be mixed with water mist and be sucked into the overhead layer 10 in a funnel shape through the air suction mechanism 3 at the specific part, the water mist amount near the specific position of the overhead layer 10 can be made more concentrated, so as to enhance the dust removal effect at the specific position.

[0040] In addition, in the daily spraying scenario, the air inlet mechanism 2, the exhaust mechanism 4 and several air suction mechanisms 3 can also be kept in the open state to promote the more rapid sinking of the overall air and water mist inside the workshop 1, thereby increasing the upper limit of the specification of the spray heads 15 that the workshop 1 can withstand, and further increasing the upper limit of the overall dust removal effect. When it is necessary to improve the dust removal intensity of a specific area, the air suction mechanism 3 in the specific area is maintained in the open state, and the air suction mechanisms 3 in other areas are closed. In this way, the water mist at the specific area can also be in a funnel shape and thus more concentrated, so as to enhance the dust removal effect at the specific position.

[0041] By causing the air above the area to be mixed with water mist and be sucked into the overhead layer 10 in a funnel shape through the air suction mechanism 3 at the specific part, the water mist amount near the specific position of the overhead layer 10 is made more concentrated, so as to enhance the dust removal effect at the specific position.

[0042] This embodiment also discloses a usage method of a spray dust suppression system for a concrete plant area: In the daily spray scenario, a number of spray heads 15 spray water mist to spray and dust the interior of the plant building 1; When it is necessary to enhance the dust removal intensity of a specific area, the air flow above and within the circumferential range of the area is sucked into the overhead layer 10 from the specific part by opening the air suction mechanism 3 below the specific part, and finally discharged from the overhead layer 10 through the exhaust mechanism 4. During this process, the air inlet mechanism 2 continuously supplements the air at the top of the plant building 1 into the interior of the plant building 1.

[0043] The implementation principle of this embodiment is as follows: In the daily spray scenario, a number of spray heads 15 spray water mist to evenly cover the interior space of the plant building 1, which can effectively reduce the dust concentration in the entire plant building 1 and play a role in comprehensive dust removal. When it is necessary to enhance the dust removal intensity of a specific area, the air suction mechanism 3 below the specific part is opened to form a local negative pressure environment, sucking the water mist-containing air above and within the circumferential range of the area into the overhead layer 10 and discharging it through the exhaust mechanism 4. At the same time, the air inlet mechanism 2 supplements fresh air into the interior of the plant building 1, so as to achieve a high concentration of water mist in the specific area and significantly enhance the dust removal effect in this area. In addition, this design can also flexibly respond to different dust-raising situations in different areas, improving the adaptability and practicality of the system.

[0044] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A spray dust reduction system for a concrete plant, comprising a plurality of spray heads (15) arranged on the top of a plant (1), characterized in that: An air inlet mechanism (2) is arranged at the top of the factory building (1), an overhead layer (10) is arranged at the bottom of the factory building (1), and a breathable partition (11) is arranged at the top of the overhead layer (10), an exhaust mechanism (4) is arranged on the side of the overhead layer (10), and the breathable partition (11) is provided with a plurality of air suction mechanisms (3).

2. The spray dust reduction system for concrete plant according to claim 1 is characterized by: A pair of guide rails (12) are arranged on the top of the plant (1), a plurality of spray racks (13) are arranged between the two guide rails (12), a plurality of spray heads (15) are arranged on corresponding spray racks (13), and the spray racks (13) are provided with a walking mechanism (14) for moving along the guide rails (12).

3. The spray dust reduction system for concrete plant according to claim 2 is characterized in that: A swing mechanism (16) is provided between the spray frame (13) and the spray head (15).

4. The spray dust reduction system for concrete plant according to claim 1 is characterized by: A dust-blocking bag (5) is detachably provided at the air outlet of the exhaust mechanism (4), and a plurality of staggered block bars (6) are provided inside the dust-blocking bag (5).

5. The spray dust reduction system for concrete plant according to claim 4 is characterized in that: The dust blocking bag (5) comprises a frame (51) and a bag body (52) arranged outside the frame (51); the blocking bar (6) comprises a structural frame (61) and a cloth strip (62) connected to the inside of the structural frame (61); and the structural frame (61) is connected to the frame (51).

6. The spray dust reduction system for concrete plant according to claim 5, characterized in that: The structural frame (61) is rotatably connected to the frame (51), and an inner supporting elastic member (53) is provided between the structural frame (61) and the frame (51).

7. The spray dust reduction system for concrete plant according to claim 4, characterized in that: The bottom wall of the overhead layer (10) is arranged obliquely and a bag washing pool is arranged at the bottom.

8. The spray dust reduction system for concrete plant according to claim 7, characterized in that: A bag washing bucket (7) is rotatably arranged inside the bag washing pool, and the bag washing pool is also provided with a rotating mechanism (71) for driving the bag washing bucket (7) to rotate.

9. The spray dust reduction system for concrete plant according to claim 8, characterized in that: A slag discharge pipe (72) is provided at the center of the bottom of the bag washing bucket (7), and the slag discharge pipe (72) is provided with a slag discharge valve (73).

10. A method for using the spray dust reduction system for a concrete plant area based on any one of claims 1 to 9, characterized in that: In a daily spraying scenario, a plurality of spray heads (15) spray water mist to spray and remove dust inside the factory building (1); When it is necessary to increase the dust removal intensity in a specific area, the air suction mechanism (3) below the specific part is opened to suck the air above the area and in the circumferential range from the specific part into the interior of the overhead layer (10), and finally discharged from the overhead layer (10) through the exhaust mechanism (4). During this process, the air intake mechanism (2) continuously replenishes the air from the top of the factory building (1) into the interior of the factory building (1).

Images