A purification and energy-saving device to prevent dust from being generated at civil construction sites.

Abstract

This invention relates to the field of particle separation technology in liquids and gases, and discloses a purification and energy-saving device for avoiding dust pollution at civil construction sites. The device includes: a water receiving box, fixedly installed at the bottom inside the construction site enclosure; the water receiving box integrates a spray direction adjustment component and an energy-saving purification component; the spray direction adjustment component includes an adjustment arm, an adjustment push rod, and a spray pipe; the adjustment arm consists of two hinged arm sections, and the two ends of the adjustment push rod are rotatably connected to the upper and lower ends of the adjustment arm; the spray pipe is fixedly connected to the top of the adjustment arm, and spray heads are arranged in an axial array on the spray pipe; this invention, through the spray direction adjustment component and combined with real-time dust concentration, wind speed, and wind direction data collected by construction site environmental monitoring equipment, intelligently controls the extension and retraction of the adjustment push rod, thereby adjusting the rotation angle of the adjustment arm so that the spray direction of the spray pipe forms a parabolic trajectory inclined from bottom to top.

Description

Technical Field

[0001] This invention relates to the field of separating particles from gases in liquids, and more specifically, to a purification and energy-saving device for preventing dust from being generated at civil construction sites. Background Technology

[0002] Dust pollution is a common and difficult-to-control problem during civil construction. Traditional dust control methods mainly include watering, covering, and setting up barriers. While watering can temporarily suppress dust, it has drawbacks such as wasting water resources, making the ground slippery, and the effect is not lasting.

[0003] Traditional spraying devices typically have a fixed spray direction and cannot be dynamically adjusted according to real-time dust concentration, wind speed, and wind direction, resulting in poor dust suppression effects. The water mist may also be dispersed by the wind, failing to effectively cover the dusty area. Therefore, we propose a purification and energy-saving device to prevent dust from rising from civil construction sites. Summary of the Invention

[0004] This invention provides a purification and energy-saving device to avoid dust pollution at civil construction sites, solving the technical problem in related technologies that cannot be dynamically adjusted according to real-time dust concentration, wind speed and wind direction, resulting in poor dust reduction effect and water mist that may be dispersed by the wind and unable to effectively cover the dusty area.

[0005] This invention provides a purification and energy-saving device to avoid dust pollution at civil construction sites, comprising: a water receiving box, which is fixedly installed at the bottom inside the construction site fence, and the water receiving box is integrated with a spray direction adjustment component and an energy-saving purification component;

[0006] The spray direction adjustment assembly includes an adjustment arm, an adjustment push rod, and a spray pipe. The adjustment arm consists of two arm sections that are hinged together. The two ends of the adjustment push rod are rotatably connected to the upper and lower ends of the adjustment arm sections, respectively.

[0007] The spray pipe is fixedly connected to the top of the adjusting arm, and spray heads are arranged in an axial array on the spray pipe. The dust concentration, wind speed and wind direction data collected in real time by the construction site environmental monitoring equipment are used to control the extension and retraction of the adjusting push rod to adjust the rotation angle of the adjusting arm, so that the spray direction of the spray pipe forms a parabolic trajectory that slopes from bottom to top. After the spray particles are adsorbed by the construction site fence wall, they flow back to the water collection box along the fence wall. The energy-saving purification component performs multi-stage filtration treatment on the returned liquid and circulates it for use by the spray system.

[0008] Furthermore, the spray head includes a nozzle mounting base arrayed and fixed on the spray pipe. A universal ball is fixedly provided at the bottom of the spray head and is rotatably disposed in the nozzle mounting base. The spray pipe is connected to the spray head through the nozzle mounting base and the universal ball for adjusting the direction of the spray head.

[0009] Furthermore, the energy-saving purification component includes multiple filter partitions and a water receiving plate. The water receiving plate is fixed on one side near the construction site fence and is arc-shaped. The high edge of the water receiving plate is tightly attached to the inner wall of the construction site fence, and there is adhesive tape on the water receiving plate. Water droplets flowing down the construction site fence flow into the water receiving plate through the adhesive tape.

[0010] Furthermore, the water receiving box has return water inlets arranged on one side near the water receiving plate. A guide plate is fixedly installed inside the water receiving box, and a return water chamber is formed above the guide plate. The height dimension of the left side of the guide plate is greater than that of the right side. A drain hole is opened at the lower part of the guide plate. Water droplets received by the water receiving plate enter the return water chamber through the return water inlet, and then flow down into the filter chamber composed of several filter partition plates after collecting in the drain hole.

[0011] Furthermore, an electrical box is provided on one side of the filter chamber composed of filter partitions. Inside the electrical box are two independent ventilation chambers and a water pump chamber. A water pump is fixedly installed inside the water pump chamber, and the water inlet pipe of the water pump is connected to the last filter chamber.

[0012] Furthermore, the outlet end of the water pump is connected to a pressure expansion bladder and a backflush pipe. Each filter partition is equipped with a filter screen, and a screen flushing nozzle is arrayed on the inner wall of the filter partition frame near the filter screen that blocks impurities. The screen flushing nozzle is connected to the backflush pipe and is used to flush the filter screen through the screen flushing nozzle when the water pump is working.

[0013] Furthermore, the pressure-inflating bladder is internally arrayed with elastic pull ropes, and the liquid outlet end of the pressure-inflating bladder is connected to a water supply pipe. The end of the water supply pipe furthest from the pressure-inflating bladder is connected to a spray pipe.

[0014] Furthermore, when the water pump is working, it injects the water filtered by the last filter separator into the pressure expansion bladder, causing the pressure expansion bladder to bulge, and when the water pump stops working, it continuously supplies high-pressure water into the spray pipe.

[0015] Furthermore, a fan assembly is fixedly installed inside the ventilation chamber. The fan assembly has only one air outlet, and the only air outlet is connected to a ventilation pipe. A pressure shed is installed at the end of the ventilation pipe away from the fan assembly.

[0016] Furthermore, the water-pressurizing shed is arc-shaped and fixed to the top of the inner side of the construction site fence. An air curtain nozzle is opened on the inner side of the water-pressurizing shed away from the construction site fence. The air curtain nozzle is connected to the ventilation pipe. The air delivered by the fan group is sprayed vertically downward through the air curtain nozzle, which drives the sprayed water mist and dust to flow downward and contact the construction site fence.

[0017] The beneficial effects of this invention are as follows:

[0018] This invention uses a spray direction adjustment component, combined with real-time data on dust concentration, wind speed and wind direction collected by construction site environmental monitoring equipment, to intelligently control the extension and retraction of the adjustment push rod, thereby adjusting the rotation angle of the adjustment arm so that the spray direction of the spray pipe forms a parabolic trajectory that slopes upward from bottom to top. This dynamic adjustment capability allows the water mist to cover the dust area more accurately, improves dust reduction efficiency, and prevents the water mist from being dispersed by the wind, effectively solving the problem of fixed or inconvenient spray direction in traditional spray devices.

[0019] After being adsorbed by the construction site fence wall, the sprayed microparticles flow back to the water collection box along the fence wall and undergo multi-stage filtration through energy-saving purification components, achieving water resource recycling. This significantly reduces water consumption, saves operating costs, and aligns with the principles of energy conservation and environmental protection. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the water receiving box structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the spray head structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the inner structure of the water-pressurizing shed of the present invention;

[0024] Figure 5 This is a schematic diagram of the internal structure of the water receiving box of the present invention;

[0025] Figure 6 This is a schematic diagram of the left side structure of the water receiving box of the present invention;

[0026] Figure 7 This is a schematic diagram of the internal structure of the pressure-supplying expansion bladder of the present invention;

[0027] Figure 8 This is a schematic diagram of the right side structure of the filter separator of the present invention.

[0028] In the diagram: 11. Water receiving box; 12. Water receiving plate; 13. Adhesive tape; 14. Adjusting arm; 15. Spray pipe; 16. Nozzle mounting base; 17. Pressure chamber; 18. Vent pipe; 19. Water supply pipe; 21. Omnidirectional ball; 22. Spray head; 23. Air curtain nozzle; 24. Electrical box; 25. Vent chamber; 26. Fan assembly; 27. Pump chamber; 28. Pump components; 29. ​​Guide plate; 31. Drain hole; 32. Pressure supply expansion bladder; 33. Backflush pipe; 34. Filter partition plate; 35. Water return port; 36. Pulling rope; 37. Filter screen; 38. Flushing nozzle; 42. Adjustment push rod. Detailed Implementation

[0029] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0030] like Figure 1 - Figure 8 As shown, a purification and energy-saving device for avoiding dust at civil construction sites includes: a water receiving box 11, which is fixedly installed at the bottom inside the construction site fence, and the water receiving box 11 is integrated with a spray direction adjustment component and an energy-saving purification component.

[0031] The spray direction adjustment assembly includes an adjustment arm 14, an adjustment push rod 42, and a spray pipe 15. The adjustment arm 14 is composed of two arm sections that are hinged together. The two ends of the adjustment push rod 42 are respectively rotatably connected to the ends of the upper and lower arm sections of the adjustment arm 14.

[0032] The spray pipe 15 is fixedly connected to the top of the adjusting arm 14, and spray heads 22 are arranged in an array along the axial direction on the spray pipe 15. The dust concentration, wind speed and wind direction data collected in real time by the construction site environmental monitoring equipment are used to control the extension and retraction of the adjusting push rod 42 to adjust the rotation angle of the adjusting arm 14, so that the spray direction of the spray pipe 15 forms a parabolic trajectory that is inclined from bottom to top. After the spray particles are adsorbed by the construction site fence wall, they flow back to the water collection box 11 along the fence wall. The energy-saving purification component performs multi-stage filtration treatment on the returned liquid and circulates it for use by the spray system.

[0033] The spray head 22 includes a nozzle mounting base 16 fixedly arranged on the spray pipe 15. A universal ball 21 is fixedly arranged at the bottom of the spray head 22 and is rotatably arranged in the nozzle mounting base 16. The spray pipe 15 is connected to the spray head 22 through the nozzle mounting base 16 and the universal ball 21 for adjusting the direction of the spray head 22.

[0034] The energy-saving purification component includes multiple filter partitions 34 and a water receiving plate 12. The water receiving plate 12 is fixed on one side near the construction site fence and is arc-shaped. The high side of the water receiving plate 12 is in close contact with the inner wall of the construction site fence, and adhesive tape 13 is pasted on the water receiving plate 12. Water droplets flowing down the construction site fence flow into the water receiving plate 12 through the adhesive tape 13.

[0035] The water receiving box 11 has a series of return water inlets 35 on one side near the water receiving plate 12. A guide plate 29 is fixedly installed inside the water receiving box 11, and a return water chamber is formed above the guide plate 29. The height dimension of the left side of the guide plate 29 is greater than that of the right side. A drain hole 31 is opened at the lower part of the guide plate 29. The water droplets received by the water receiving plate 12 enter the return water chamber through the return water inlet 35, and then flow down into the filter chamber composed of several filter partition plates 34 after collecting in the drain hole 31.

[0036] An electrical box 24 is provided on one side of the filter chamber composed of filter partition plates 34. The electrical box 24 has two independent ventilation chambers 25 and a water pump chamber 27. A water pump component 28 is fixedly installed inside the water pump chamber 27. The water inlet pipe of the water pump component 28 is connected to the last filter chamber.

[0037] The outlet end of the water pump 28 is connected to a pressure expansion bladder 32 and a backwash pipe 33. Each filter partition plate 34 is equipped with a filter screen 37. A flushing nozzle 38 is arrayed on the inner wall of the filter partition plate 34 near the filter screen 37 that blocks impurities. The flushing nozzle 38 is connected to the backwash pipe 33 and is used to flush the filter screen 37 through the flushing nozzle 38 when the water pump 28 is working.

[0038] The pressure-inflating bladder 32 has an array of elastic pull ropes 36 inside. The liquid outlet end of the pressure-inflating bladder 32 is connected to a water supply pipe 19. The end of the water supply pipe 19 away from the pressure-inflating bladder 32 is connected to a spray pipe 15.

[0039] When the water pump 28 is working, it injects the water filtered by the last filter separator 34 into the pressure expansion bladder 32, causing the pressure expansion bladder 32 to bulge. When the water pump 28 stops working, it continuously supplies high-pressure water into the spray pipe 15.

[0040] A fan assembly 26 is fixedly installed inside the ventilation chamber 25. The fan assembly 26 has only one air outlet, and the only air outlet is connected to a ventilation pipe 18. A pressure shed 17 is provided at the end of the ventilation pipe 18 away from the fan assembly 26.

[0041] The water pressure shed 17 is arc-shaped and is fixed to the top of the inner side of the construction site fence. An air curtain nozzle 23 is provided on the inner side of the water pressure shed 17 away from the construction site fence. The air curtain nozzle 23 is connected to the ventilation pipe 18. The air delivered by the fan group 26 is sprayed vertically downward through the air curtain nozzle 23, which drives the sprayed water mist and dust to flow downward and contact the construction site fence.

[0042] Intelligent spray dust suppression stage: The device collects real-time data on dust concentration, wind speed, and wind direction using environmental monitoring equipment integrated into the construction site. Based on this data, the control system dynamically adjusts the extension and retraction of the adjusting push rod 42, thereby changing the rotation angle of the adjusting arm 14, which consists of two articulated arms. This causes the spray direction of the spray pipe 15, fixed at the top of the adjusting arm 14, to form a parabolic trajectory sloping upwards (the initial spray angle θ can be adjusted according to the wind speed and dust diffusion model, for example, setting θ = 30°~60° to match the particle suspension trajectory under common wind speeds of 3-5 m / s). The spray heads 22, arrayed on the spray pipe 15, fine-tune the local spray direction through the universal ball 21 to ensure that the water mist covers the dust dispersion path.

[0043] Sprayed microparticles (typically 50-200 μm in diameter) collide with and adsorb dust particles under the influence of airflow, forming agglomerates. Because the spray direction is designed to be angled upwards, a large number of droplets impact the construction site enclosure wall under inertia and are adsorbed by the wall. The adsorbed water film flows downwards along the enclosure wall under gravity, forming wall flow. The wall flow is collected by an arc-shaped water receiving plate 12 (with adhesive tape 13 adhering to the surface of the water receiving plate 12 to enhance the guiding and adhesion effect), and finally flows into the return chamber of the water receiving box 11 through the return water inlet 35.

[0044] Water circulation purification and energy-saving pressurization stage: After the return dusty wastewater enters the water receiving box 11, it is first guided by the guide plate 29 (the guide plate 29 is designed with a slope of 5°-10°, higher on the left and lower on the right, utilizing gravity flow), and enters the multi-stage filtration chamber composed of multiple filter partition plates 34 through the drain hole 31. Each filter partition plate 34 is equipped with a filter screen 37 (a progressively denser filter screen can be selected, for example, from 80 mesh to 200 mesh), which physically filters the wastewater and removes suspended particles such as silt.

[0045] The filtered clean water is collected in the final filtration chamber and pumped into the pressure expansion bladder 32 by the water pump 28. When the water pump 28 is working, a portion of the water flow is delivered through the backwash pipe 33 to the flushing nozzles 38 in the filter partition plates 34 of each stage, which spray in the opposite direction to flush the impurities accumulated on the filter screen 37, achieving self-cleaning and maintaining filtration efficiency (filtration efficiency η can be expressed as η=1-C_out / C_in, where C_in and C_out are the inlet and outlet suspended solids concentrations, and after three stages of filtration, η≥95% can be achieved).

[0046] The pressure-suppressing expansion bladder 32 is equipped with an elastic pull rope 36, which allows it to expand and store energy evenly when filled with water. When the water pump 28 stops working (such as at night or during low dust periods), the expansion bladder continues to supply water to the spray pipe 15 through the water supply pipe 19 using the pre-stored internal pressure, achieving the energy-saving effect of intermittent pumping and continuous spraying (saving approximately 30%-40% of energy).

[0047] Assisted air curtain dust suppression and enhanced recirculation stage: The device also includes a water-pressurized canopy 17 located at the top of the enclosure, with air curtain nozzles 23 on its inner side connected to a fan assembly 26 via a ventilation pipe 18. The fan assembly 26 generates a downward vertical airflow, forming an air curtain. This airflow, on the one hand, presses down the fine droplets and dust escaping to the top area of ​​the enclosure, causing them to contact the enclosure wall surface; on the other hand, it enhances the downward flow rate of the water film on the wall surface, promoting recirculation efficiency. The air curtain wind speed is generally set at 2-4 m / s, which is sufficient to overcome the upward force of a light breeze and prevent secondary dust re-entrainment.

[0048] By adjusting the spray trajectory in real time using environmental data, the water mist precisely covers the dust diffusion path, making it particularly adaptable to varying wind speed and direction conditions. The parabolic upward spray can intercept fine particulate matter such as PM10 and PM2.5 suspended in the air. Combined with adsorption on the enclosure walls, the overall dust suppression efficiency is improved compared to traditional fixed spraying.

[0049] This system achieves fully enclosed collection, multi-stage filtration, and recycling of water for spraying. The backwash self-cleaning system ensures long-term stable operation of the filtration system, reducing maintenance frequency. The energy storage design of the pressure-supply expansion bladder 32 allows the water pump to operate intermittently, reducing system energy consumption. Calculations show that compared to traditional direct-discharge sprayers, this device can save approximately 70%–85% of water, with a comprehensive energy saving rate exceeding 35%.

[0050] Combining the mechanisms of "water mist adsorption" and "air curtain suppression," this system not only captures existing dust but also forms an air curtain barrier at the top of the enclosure to suppress dust spillage. The continuous flow of water on the enclosure walls also adheres to settled dust, reducing secondary dust generation.

[0051] The backwashing self-cleaning mechanism of filter screen 37 reduces the frequency of manual cleaning; the intelligent control system automatically starts, stops and adjusts according to environmental data, requiring no dedicated personnel to operate; the device mainly utilizes gravity flow and physical filtration, ensuring reliable operation and a low failure rate.

[0052] The embodiments of the present invention have been described above. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms based on the guidance of the present embodiments, all of which are within the protection scope of the present embodiments.

Claims

1. A purification and energy saving device for avoiding dust raising at a civil construction site, characterized in that, include: Water receiving box (11), the water receiving box (11) is fixedly installed on the bottom of the inner side of the construction site fence, and the water receiving box (11) is integrated with a spray direction adjustment component and an energy-saving purification component; The spray direction adjustment assembly includes an adjustment arm (14), an adjustment push rod (42), and a spray pipe (15). The adjustment arm (14) is composed of two arm sections that are hinged together. The two ends of the adjustment push rod (42) are respectively rotatably connected to the upper and lower ends of the adjustment arm (14). The energy-saving purification component includes multiple filter partitions (34). An electrical box (24) is provided on one side of the filter chamber formed by the filter partitions (34). The electrical box (24) has two independent ventilation chambers (25) and a water pump chamber (27) inside. A fan assembly (26) is fixedly installed inside the ventilation chamber (25). The fan assembly (26) has only one air outlet, and the air outlet is connected to a ventilation pipe (18). A water pressure shed (17) is provided at the end of the ventilation pipe (18) away from the fan assembly (26). The water-pressing shed (17) is arc-shaped and fixed to the top of the inner side of the construction site fence. An air curtain nozzle (23) is provided on the inner side of the water-pressing shed (17) away from the construction site fence. The air curtain nozzle (23) is connected to the ventilation pipe (18). The air delivered by the fan group (26) is sprayed vertically downward through the air curtain nozzle (23), which drives the sprayed water mist and dust to flow downward and contact the construction site fence. The spray pipe (15) is fixedly connected to the top of the adjusting arm (14), and spray heads (22) are arranged in an axial array on the spray pipe (15). The dust concentration, wind speed and wind direction data collected in real time by the construction site environmental monitoring equipment are used to control the extension and retraction of the adjusting push rod (42) to adjust the rotation angle of the adjusting arm (14), so that the spray direction of the spray pipe (15) forms a parabolic trajectory that is inclined from bottom to top. After the spray particles are adsorbed by the construction site fence wall, they flow back to the water collection box (11) along the fence wall. The energy-saving purification component performs multi-stage filtration treatment on the returned liquid and circulates it for use by the spray system.

2. The purification and energy saving device for avoiding dust raising at a civil construction site according to claim 1, characterized in that, The spray head (22) includes a nozzle mounting base (16) fixedly arranged on the spray pipe (15). A universal ball (21) is fixedly provided at the bottom of the spray head (22), and the universal ball (21) is rotatably arranged in the nozzle mounting base (16). The spray pipe (15) is connected to the spray head (22) through the nozzle mounting base (16) and the universal ball (21) for adjusting the direction of the spray head (22).

3. The device according to claim 1, wherein the device is characterized by: The energy-saving purification component also includes a water receiving plate (12), which is fixed on one side near the construction site fence. The water receiving plate (12) is arc-shaped, with the high side of the water receiving plate (12) tightly attached to the inner wall of the construction site fence. Adhesive tape (13) is pasted on the water receiving plate (12), and the water droplets flowing down the construction site fence flow into the water receiving plate (12) through the adhesive tape (13).

4. The device according to claim 3, wherein the device is characterized by, The water receiving box (11) has a return water inlet (35) arranged on one side near the water receiving plate (12). A guide plate (29) is fixedly installed inside the water receiving box (11), and a return water chamber is formed above the guide plate (29). The height dimension of the left side of the guide plate (29) is greater than that of the right side. A drain hole (31) is opened at the lower part of the guide plate (29). The water droplets received by the water receiving plate (12) enter the return water chamber through the return water inlet (35), and then flow into the filter chamber composed of several filter partition plates (34) after being collected in the drain hole (31).

5. The device according to claim 3, wherein the device is characterized by: A water pump component (28) is fixedly installed inside the water pump chamber (27), and the water inlet pipe of the water pump component (28) is connected to the last filter chamber.

6. The device according to claim 5, wherein the device is characterized by: The outlet end of the water pump (28) is connected to a pressure expansion bladder (32) and a backwash pipe (33). Each filter partition plate (34) is equipped with a filter screen (37), and a screen flushing nozzle (38) is arrayed on the side of the inner wall of the filter partition plate (34) near the filter screen (37) to block impurities. The screen flushing nozzle (38) is connected to the backwash pipe (33) and is used to flush the filter screen (37) through the screen flushing nozzle (38) when the water pump (28) is working.

7. The purification and energy-saving device for avoiding dust at civil construction sites according to claim 6, characterized in that, The pressure-inflating bladder (32) has an array of elastic pull ropes (36) inside. The liquid outlet end of the pressure-inflating bladder (32) is connected to a water supply pipe (19). The end of the water supply pipe (19) away from the pressure-inflating bladder (32) is connected to a spray pipe (15).

8. The purification and energy-saving device for avoiding dust at civil construction sites according to claim 7, characterized in that, When the water pump (28) is working, it injects the water filtered by the last filter partition plate (34) into the pressure expansion bladder (32), causing the pressure expansion bladder (32) to bulge, and when the water pump (28) stops working, it continuously supplies high-pressure water into the spray pipe (15).

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