An automatic dust suppression device

Abstract

This application provides an automated dust suppression device for construction, comprising two symmetrically arranged spray rods, a base fixedly mounted at the bottom of the spray rods, a plastic water pipe connected to the spray rods, an air bag disposed between the two spray rods, and air pipes connected to both sides of the air bag. The spray rods include an upper spray head, a lower spray head, a steel water pipe, a pneumatic self-closing damping water valve, and pipe connectors. This application can achieve "early start and delayed shutoff" of the spraying, that is, before a muck truck passes through the spraying device, the spraying is pre-activated to wet the road surface and air and reduce dust. After the vehicle passes through the spraying device, the spraying can continue for a period of time to ensure that dust raised behind the vehicle can settle.

Description

Technical Field

[0001] The present invention relates to the field of building construction, and in particular to an automatic dust suppression device. Background Art

[0002] Dust from construction sites is a major source of urban air pollution. Especially during strong winds, dust concentrations and travel distances increase rapidly, significantly impacting the lives and health of surrounding residents. Therefore, it has long been a key focus of local authorities. Common dust control measures include covering bare soil, hardening the site, landscaping the site, spraying and watering, and vehicle washing.

[0003] Spray dust suppression technology targets dust generated on construction sites by spraying water mist to reduce it. Spraying is typically deployed along construction site fences, edge protection fences, building scaffolding, tower crane arms, and other locations. Spraying operations can be controlled in two main modes: manual and automatic. Manual mode involves manually controlling the water valve opening and closing to control the spraying period and intensity. Automatic mode involves automatically controlling the spraying period and intensity through an intelligent control system, such as setting a timed spraying period or automatically turning the spray on and off based on dust monitoring data.

[0004] However, in the early stages of a project, temporary facilities and foundation pit excavation are often constructed simultaneously due to construction progress considerations. In this case, the on-site roads have not yet been hardened, and the muck trucks are heavy vehicles that cause dust to fly when driving on the site, causing serious air pollution. At this time, because the temporary power and water lines on the site have not yet been laid, the fixed sprinkler facilities cannot be installed in time. Even if the fixed sprinkler facilities have been installed, it is difficult to effectively reduce dust from the vehicles on the excavation route that is constantly adjusted on the site.

[0005] To solve this problem, it is necessary to propose dust reduction plans based on the excavation routes and transport vehicles themselves:

[0006] Patent CN202221334174.8 discloses a dust reduction device for construction projects. The device is movable and is equipped with a water tank, a water injection mechanism and a water pumping mechanism. A spray mechanism is installed inside the device, and the dust reduction requirements at different heights can be met by adjusting the height of the spray mechanism.

[0007] Patent CN202221258067.1 discloses a dust reduction device for highway pavement construction. The water tank needs to be filled with water. The side wall of the water tank is connected to a water outlet pipe. The device is pushed to move on the road surface to reduce dust.

[0008] Patent CN202221419791.8 discloses a hydraulic dry fog dust suppression dump truck, which has a water tank on the vehicle and a dust suppression component on the front of the vehicle, so that the vehicle can suppress dust while driving.

[0009] Patent CN200520009137.X discloses an automatic spraying vehicle dust reduction device. When a transport vehicle carrying dust-prone materials drives into the doorpost of a gate frame, the light source of the spotlight is blocked, and the photoelectric switch automatically connects the submersible pump circuit, causing the submersible pump to work. The water in the water tank flows through the outlet pipe to the spray nozzle for spraying to reduce dust; when the transport vehicle leaves the doorpost, the light source of the spotlight hits the photoelectric switch, cutting off the power supply of the submersible pump and stopping the water spraying operation.

[0010] However, the above patent document has the following defects:

[0011] 1. Each of the above technologies requires the use of water pumps, sensors, electric water valves, etc., and therefore requires a power supply. However, during the excavation phase, temporary power lines may not have been laid on site, and power supply is unavailable, causing the above devices to malfunction.

[0012] 2. Patent CN202221334174.8 and Patent CN202221258067.1 require manual pushing of the device to perform spraying operations along the road, which has high labor costs, low operating efficiency, and ineffective dust reduction effect.

[0013] 3. Patent CN202221419791.8's solution of loading a water tank on a dump truck first requires modification of the vehicle and will squeeze the vehicle's soil-carrying space. Secondly, frequent manual water addition is required, resulting in high operating costs. Finally, the dust reduction range is limited, and a multi-level three-dimensional dust reduction effect cannot be achieved at a height. Furthermore, the smoke and dust left by the dump truck cannot be continuously sprayed for dust reduction.

[0014] 4. Patent CN200520009137.X uses a photoelectric switch to sense the passage of vehicles and initiate dust reduction operations when these vehicles pass. First, this system is relatively complex, requiring a power supply, a gantry, and sensing equipment. This requires a high level of environmental performance and system stability, making it difficult to apply to the complex on-site environment of frequently adjusted excavation routes. Second, the system requires frequent water tank refills, resulting in high operating costs and inconvenience. Finally, the sprinkler system only activates when a vehicle passes through the gatepost, resulting in a very short sprinkler operation time. The sprinkler system cannot be activated in advance or deactivated in the event of an approaching vehicle, thus limiting its dust reduction effectiveness.

[0015] Therefore, this patent improves the existing technology and proposes an automatic dust reduction device. Summary of the Invention

[0016] The object of the present invention is to provide an automatic dust suppression device, which solves the problems raised in the above background technology by arranging a pneumatic self-closing damping water valve, an upper sprinkler head and a lower sprinkler head.

[0017] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0018] An automatic dust suppression device includes two symmetrically arranged spray rods, a base fixedly mounted on the bottom of the spray rods, a plastic water pipe connected to the spray rods, an air bag arranged between the two spray rods, and an air pipe connected to both sides of the air bag;

[0019] The spray rod includes an upper spray head, a lower spray head, a steel water pipe, a pneumatic self-closing damping water valve, and a pipe connector;

[0020] There are multiple steel water pipes and pipe connectors. The upper sprinkler head, the lower sprinkler head, and the pneumatic self-closing damping water valve are connected in series through the steel water pipes and pipe connectors to form a passage. The two sides of the airbag are connected to the corresponding pneumatic self-closing damping water valves on both sides through the air pipe.

[0021] The pneumatic self-closing damping water valve includes a block, a steel spring, a piston rod, a viscous fluid, a sealing ring, an outer sleeve and a piston with a hole. The pneumatic self-closing damping water valve has an upper end, a lower end and a horizontal end, wherein the upper end and the lower end of the pneumatic self-closing damping water valve are both connected to corresponding steel water pipes, and the horizontal end of the pneumatic self-closing damping water valve is connected to the air pipe.

[0022] As a preferred technical solution of the present application, the airbag is made of rubber material and has a flat shape, and the bottom of the airbag also has an inflation hole.

[0023] As a preferred technical solution of the present application, the air pipe is a plastic hose.

[0024] As a preferred technical solution of the present application, the viscous fluid is silicone oil, and the viscous fluid is arranged in a space formed on opposite sides of two sealing rings in the outer sleeve.

[0025] As a preferred technical solution of the present application, rollers are provided on the lower surface of the base. The number of rollers on the lower surface of the same base is four, and the four rollers are evenly and equidistantly provided at the four corners of the lower surface of the base in the form of a rectangular array.

[0026] As a preferred technical solution of the present application, the two ends of the steel spring are respectively connected to the corresponding stopper and the inner wall of the outer sleeve, and the side of the stopper away from the steel spring is fixedly connected to the piston rod.

[0027] As a preferred technical solution of the present application, the piston rod is slidably arranged inside the outer sleeve, the two sealing rings are symmetrically arranged at both ends of the piston rod and fit tightly with the inner wall of the outer sleeve, and the perforated piston is embedded in the middle of the piston rod, and multiple ones are equidistantly arranged in the form of a circular array.

[0028] As a preferred technical solution of the present application, the plastic water pipe is a plurality of T-shaped pipes, each of the T-shaped pipes is connected to the spray rod of the corresponding automatic dust reduction device, and the plurality of the automatic dust reduction devices are arranged at equal intervals.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] In the scheme of this application:

[0031] 1. This invention solves the difficulty of conventional spraying, accurately reduces dust, and realizes green and environmentally friendly construction;

[0032] 2. The present invention does not require electricity, avoids the tangled pulling of cables on site, does not require sensing and communication modules, has good adaptability to complex conditions on construction sites, and has high system reliability;

[0033] 3. The present invention does not require manual control and manual water addition, achieving "zero manual intervention" and is easy to use;

[0034] 4. The present invention realizes the automation of the spraying operation through a purely mechanical structure. The spraying is performed when a vehicle passes by and does not spray when no vehicle passes by, thus saving energy and water.

[0035] 5. The present invention can realize the "early start and delayed shut-off" of the spraying device, that is, before the muck truck passes through the spraying device, the spraying is started in advance to moisten the road surface and air and reduce dust raised. After the vehicle passes through the spraying device, the spraying can still be continued for a period of time to ensure that the dust raised behind the vehicle can be settled.

[0036] 6. The present invention can achieve "three-dimensional multi-level" spraying, that is, spraying at the height of the vehicle tires to reduce dust raised, and spraying at a certain height above the vehicle body to allow the raised dust to settle;

[0037] 7. The present invention realizes the organic combination of front-end control and end-of-pipe treatment, has high dust reduction efficiency and good dust reduction effect, adopts modular design, adjusts the usage quantity according to needs, and can be adjusted at any time according to the excavation route. It is easy to install and disassemble and can be recycled. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A schematic diagram of the structure of an automatic dust suppression device provided in this application;

[0039] Figure 2 This is a schematic diagram of the front structure of an automatic dust suppression device provided in this application;

[0040] Figure 3 A schematic side view of the structure of an automated dust suppression device provided in this application;

[0041] Figure 4A schematic diagram of the top view of an automatic dust suppression device provided in this application;

[0042] Figure 5 A schematic diagram of the internal structure of a pneumatic self-closing damping water valve of an automated dust suppression device provided in this application;

[0043] Figure 6 This is a schematic diagram of the combined assembly structure of an automatic dust reduction device provided in this application.

[0044] Indicated in the figure:

[0045] 1. Upper sprinkler head;

[0046] 2. Lower sprinkler head;

[0047] 3. Airbag;

[0048] 4. Trachea;

[0049] 5. Steel water pipes;

[0050] 6. Base

[0051] 7. Pneumatic self-closing damping water valve; 71. Stopper; 72. Steel spring; 73. Piston rod; 74. Viscous fluid; 75. Sealing ring; 76. Outer sleeve; 77. Piston with hole;

[0052] 8. Plastic water pipes

[0053] 9. Pipeline connectors DETAILED DESCRIPTION

[0054] To make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0055] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely represents some embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0056] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions therein may be combined with each other.

[0057] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0058] In the description of the present invention, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the inventive product is typically placed when in use, or the orientations or positional relationships commonly understood by those skilled in the art. Such terms are intended solely to facilitate the description of the present invention and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" and the like are used solely for distinction and should not be construed as indicating or implying relative importance.

[0059] See also Figures 1 to 6 The present invention provides a technical solution: an automatic dust suppression device, comprising two symmetrically arranged spray rods, a base 6 fixedly installed at the bottom of the spray rods, a plastic water pipe 8 connected to the spray rods, an air bag 3 arranged between the two spray rods and an air pipe 4 connected to both sides of the air bag 3, the air pipe 4 is a plastic hose, and rollers are provided on the lower surface of the base 6. The number of rollers on the lower surface of the same base 6 is four, and the four rollers are evenly and equidistantly arranged at the four corners of the lower surface of the base 6 in the form of a rectangular array. The arrangement of the base 6 and its rollers facilitates the mobile laying and use of the device;

[0060] The spray rod includes an upper spray head 1, a lower spray head 2, a steel water pipe 5, a pneumatic self-closing damping water valve 7, and a pipe connector 9;

[0061] Among them, the number of steel water pipes 5 and pipe connectors 9 is multiple, and the upper sprinkler head 1, the lower sprinkler head 2, and the pneumatic self-closing damping water valve 7 are connected in series through the steel water pipes 5 and the pipe connectors 9 to form a passage (such as Figure 2 As shown), both sides of the airbag 3 are connected to the corresponding pneumatic self-closing damping water valves 7 on both sides through the air pipe 4. The height of the upper sprinkler head 1 is 1m-2m higher than the muck truck body, and the height of the lower sprinkler head 2 is equivalent to the height of the muck truck tire. Therefore, when the upper sprinkler head 1 and the lower sprinkler head 2 are spraying and reducing dust, the top and bottom of the muck truck can be sprayed and reduced dust simultaneously, so that the range of spraying and reducing dust is better. The airbag 3 is made of rubber material, which requires high elasticity, pressure resistance, wear resistance, and good tear resistance, and is flat in shape. The bottom of the airbag 3 also has an inflation hole, which can be connected to the external inflation equipment through the setting of the inflation hole. It is used to replenish air when the air pressure of the airbag 3 is insufficient. All the above connections are required to be firm and reliable, well sealed, and leak-proof.

[0062] The pneumatic self-closing damping water valve 7 includes a block 71, a steel spring 72, a piston rod 73, a viscous fluid 74, a sealing ring 75, an outer sleeve 76 and a piston with a hole 77. The pneumatic self-closing damping water valve 7 has an upper end, a lower end and a horizontal end, wherein the upper end and the lower end of the pneumatic self-closing damping water valve 7 are both connected to the corresponding steel water pipe 5, and the horizontal end of the pneumatic self-closing damping water valve 7 is connected to the air pipe 4.

[0063] like Figure 5 As shown, the viscous fluid 74 is silicone oil, and the viscous fluid 74 is disposed in a space formed on opposite sides of two sealing rings 75 within the outer sleeve 76. The sealing rings 75 are intended to prevent leakage of the viscous fluid 74, but do not affect the movement of the piston rod 73 through them.

[0064] The two ends of the steel spring 72 are connected to the corresponding stopper 71 and the inner wall of the outer sleeve 76 respectively. The side of the stopper 71 away from the steel spring 72 is fixedly connected to the piston rod 73.

[0065] The piston rod 73 is slidably mounted inside the outer sleeve 76. Two sealing rings 75 are symmetrically mounted at both ends of the piston rod 73 and fit tightly against the inner wall of the outer sleeve 76. A plurality of pistons 77 with holes are embedded in the middle of the piston rod 73 and are equidistantly arranged in a circular array.

[0066] Specifically, the working mechanism of the pneumatic self-closing damping water valve 7 is as follows: the block 71 controls the water flow. Under normal conditions, it is in Figure 5 At the position indicated in the middle, water cannot flow from bottom to top, and this state is defined as the "closed" state of the pneumatic self-closing damping water valve 7;

[0067] When the air pressure in the air pipe 4 suddenly increases, that is, when the air bag 3 is subjected to external pressure, the air inside the air pipe 4 pushes the piston rod 73 to the right under the action of the air pressure, the steel spring 72 is compressed, and the stopper 71 is moved away. Due to the pressure of the municipal water, the water flow can pass from bottom to top, causing the upper sprinkler head 1 and the lower sprinkler head 2 to start the spraying operation. This state is defined as the "open" state of the pneumatic self-closing damping water valve 7;

[0068] When the air pressure in the air pipe 4 returns to its normal state, the steel spring 72 is still compressed, thus providing a reverse thrust to the stopper 71, pushing the stopper 71 and the piston rod 73 to the left. At the same time, the piston with a hole 77 moves in the viscous fluid 74, which causes the viscous fluid on the left to flow to the right through the small circular hole on the piston. This produces a damping effect, which makes the piston rod 73 and the stopper 71 move to the left more slowly. When the stopper 71 returns to the position indicated in the figure, the water stops flowing, the spraying operation stops, and the pneumatic self-closing damping water valve 7 returns to the "closed" state.

[0069] Therefore, the pneumatic self-closing damping water valve 7 can achieve three purposes: first, under the action of the instantaneous increase in air pressure, the water valve opens and the spraying operation is started; second, under the action of the reverse thrust of the steel spring 72, the water valve is self-closed; third, the damping effect causes the self-closing process to be slower, thereby achieving delayed closing.

[0070] The spraying duration can be flexibly adjusted through the design of damping parameters, mainly by adjusting the viscosity of the viscous fluid, the size and number of circular holes on the piston, etc.

[0071] Specific installation and use: Figure 1 The figure shows a set of finished devices. When the device needs to be applied to actual road dust reduction, the airbag 3 of each device is placed vertically and horizontally on the excavation road, and the spray rod and plastic water pipe are located on both sides of the excavation road. The distance between the spray rods on both sides must ensure that the muck trucks can pass smoothly. In the direction of the excavation route, a certain distance is set between the airbag 3 and the spray rod. Each set of devices is arranged at a certain interval along the excavation route. The size of the interval is based on ensuring the spray dust reduction effect. Each set of devices is connected in series through the plastic water pipes 8 on both sides. Starting from the excavation position, it is arranged to the construction site exit. The plastic water pipe 8 of the device closest to the construction site exit is connected to the municipal water connection port. The municipal water has its own water pressure and does not need to be pressurized.

[0072] In addition, according to actual project needs, such as Figure 6 As shown, multiple sets of automatic dust suppression devices can be assembled and used in combination. Multiple sets of automatic dust suppression devices are arranged at equal intervals and connected to corresponding plastic water pipes, which have a better dust suppression effect.

[0073] Specifically, when using:

[0074] 1. When the excavation vehicle travels from the excavation position to the construction site exit, it will first crush the airbag 3, causing the air pressure in the airbag 3 and the air pipe 4 to suddenly increase. According to the above explanation, under the action of the instantaneous increase in air pressure, the pneumatic self-closing damping water valve 7 opens, and the upper spray head 1 and the lower spray head 2 start spraying. The lower spray head 2 sprays at the tires of the muck truck to reduce dust. At the same time, the upper spray head 1 sprays at a height of 1-2m above the vehicle body to allow the raised dust to settle, thereby achieving a "three-dimensional multi-level" spray dust reduction effect. Since there is a certain distance between the airbag 3 and the spray rod, the spray rod starts spraying in advance before the muck truck reaches the spray rod to moisten the road surface and air, reducing dust raised after the vehicle arrives;

[0075] 2. After all wheels have passed through the airbag 3, the air pressure in the airbag 3 and the air pipe 4 quickly returns to the previous normal pressure state. According to the above description, under the reverse thrust of the steel spring 72 and the damping effect, the pneumatic self-closing damping water valve 7 is closed with a delay. The extended time is the duration of the spraying. The continuous spraying for a certain period of time can allow the vehicle to continue to spray for a period of time after passing through the spraying rod, ensuring that the dust raised behind the vehicle can settle down. According to the above description, the spraying duration can be flexibly adjusted as needed;

[0076] 3. Similarly, the dump truck can achieve "early start and delayed shutdown" before and after passing each set of equipment, realizing an organic combination of front-end control and end-of-pipe treatment, which can effectively improve the dust reduction effect.

[0077] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. An automatic dust suppression device, characterized in that: It comprises two symmetrically arranged spray rods, a base (6) fixedly mounted on the bottom of the spray rods, a plastic water pipe (8) connected to the spray rods, an air bag (3) arranged between the two spray rods, and an air pipe (4) communicating with both sides of the air bag (3); The spray rod comprises an upper spray head (1), a lower spray head (2), a steel water pipe (5), a pneumatic self-closing damping water valve (7), and a pipe connector (9); The steel water pipes (5) and the pipe connectors (9) are both in plurality, and the upper sprinkler head (1), the lower sprinkler head (2), and the pneumatic self-closing damping water valve (7) are sequentially connected in series through the steel water pipes (5) and the pipe connectors (9) to form a passage, and both sides of the airbag (3) are connected to the corresponding pneumatic self-closing damping water valves (7) on both sides through the air pipes (4); The pneumatic self-closing damping water valve (7) comprises a stopper (71), a steel spring (72), a piston rod (73), a viscous fluid (74), a sealing ring (75), an outer sleeve (76) and a piston with a hole (77). The pneumatic self-closing damping water valve (7) has an upper end, a lower end and a horizontal end, wherein the upper end and the lower end of the pneumatic self-closing damping water valve (7) are both connected to the corresponding steel water pipe (5), and the horizontal end of the pneumatic self-closing damping water valve (7) is connected to the air pipe (4); the viscous fluid (74) is silicone oil, and the viscous fluid (74) is arranged in the outer sleeve (76). The two sealing rings (75) are in the space formed on opposite sides of the steel spring (72); the two ends of the steel spring (72) are respectively connected to the corresponding stopper (71) and the inner wall of the outer sleeve (76); the side of the stopper (71) away from the steel spring (72) is fixedly connected to the piston rod (73); the piston rod (73) is slidably arranged inside the outer sleeve (76); the two sealing rings (75) are symmetrically arranged at the two ends of the piston rod (73) and are tightly fitted with the inner wall of the outer sleeve (76); and the piston with a hole (77) is embedded in the middle of the piston rod (73), and a plurality of them are equidistantly arranged in the form of a ring array; When the air bag (3) is subjected to external pressure, the air pressure in the air pipe (4) inside the air bag (3) suddenly increases, and the piston rod (73) is pushed to the right by the air pressure, the steel spring (72) is compressed, the stopper (71) is moved away, and the pneumatic self-closing damping water valve (7) is in the open state; When the airbag (3) loses external pressure, the air pressure in the airbag (3) and the air pipe (4) returns to the previous normal air pressure state. Under the reverse thrust of the steel spring (72), combined with the damping effect, the pneumatic self-closing damping water valve (7) achieves delayed closing.

2. The automatic dust suppression device according to claim 1, characterized in that: The airbag (3) is made of rubber material and is flat in shape. The bottom of the airbag (3) is also provided with an inflation hole.

3. The automatic dust suppression device according to claim 1, characterized in that: The air pipe (4) is a plastic hose.

4. The automatic dust suppression device according to claim 1, characterized in that: The lower surface of the base (6) is provided with rollers, and the number of rollers on the lower surface of the same base (6) is four. The four rollers are evenly and equidistantly arranged at the four corners of the lower surface of the base (6) in the form of a rectangular array.

5. The automatic dust suppression device according to claim 1, characterized in that: The plastic water pipe (8) is a plurality of T-shaped pipes, each of the T-shaped pipes is connected to a spray rod of a corresponding automatic dust suppression device, and the plurality of automatic dust suppression devices are arranged at equal intervals.

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