Environment-friendly dust falling device for road and bridge construction

Abstract

The application relates to the field of dust falling equipment, and discloses an environment-friendly dust falling equipment for road and bridge construction, which comprises mounting columns and spraying assemblies and cleaning assemblies mounted on the top and inside of the mounting columns, the number of the mounting columns is two or more, a baffle is fixedly arranged between every two mounting columns, and the length of the baffle can be adjusted according to the distance of water mist sprayed by the spraying assembly. The environment-friendly dust falling equipment for road and bridge construction is provided with the spraying assembly, has the advantages of convenient installation and short installation time, can reduce dust overflow and collect the dust, thereby reducing secondary dust, slowing down the speed of increasing indoor dust and reducing the burden of the equipment; the special included angle of the water mist can prevent dust overflow, avoid pollution to other areas, enhance the anti-crosswind capacity, and the sprayed water mist can be reused, which not only reduces water consumption, but also pressurizes the water in the water supply pipe to ensure the quality of the mist curtain.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of dust falling equipment, in particular to an environment-friendly dust falling equipment for road and bridge construction. BACKGROUND

[0002] In the patent application with the application publication number CN118904004A, the device includes a fog gun machine, and the device further includes a plurality of dust removal auxiliary devices matched with the fog gun machine, the dust removal auxiliary devices include a dust suction support composed of a plurality of dust suction pipes and a support rod connected with the dust suction support and spliced by a plurality of spiral filter cartridges; a spiral filter screen in each spiral filter cartridge is connected to a motor through a rotating shaft, and the rotating shaft is connected to a rotating speed sensor; when the motor does not rotate, the rotating shaft and the spiral filter screen are in a free rotating state; a metal ball placed on the spiral filter screen is fixed on a connecting rod, the connecting rod is rotatably connected to the spiral filter screen, and the connecting rod is connected to a waterproof cloth; the dust removal auxiliary devices are installed at a preset distance from the fog gun machine, and air sucked by the dust suction pipes passes through all the spiral filter cartridges in turn; in the order from top to bottom according to the rotating speed sensor, the rotating speeds collected by the rotating speed sensor are arranged into a rotating speed sequence, the working mode of the dust removal auxiliary devices is changed according to the decreasing trend of the rotating speed sequence, the working mode includes a dust removal mode and a cleaning mode, in the dust removal mode, the motor rotates in a positive direction, the connecting rod does not rotate, and the waterproof cloth is in a folded state, and in the dust removal mode, the rotating speed of the motor is positively correlated with the difference in rotating speed in the rotating speed sequence; in the cleaning mode, the motor rotates in a reverse direction, and water is injected into the spiral filter cartridges from bottom to top, the connecting rod is driven to rotate by the metal ball, the waterproof cloth is stretched out, the stretched-out waterproof cloth and the reverse-rotating spiral filter screen pressurize the water and then inject the water into the dust suction pipe, and in the cleaning mode, the rotating speed of the motor is positively correlated with the average value of the rotating speed sequence. The advantages are that through cooperation of the motor and the spiral filter screen, the dust removal auxiliary devices have multiple working modes, each working mode directly or indirectly enhances the dust removal effect by controlling the motor, for example, in the dust removal mode, the rotating of the spiral filter screen is actively controlled to share the dust filtering task pressure, so that the situation that a part of the spiral filter screens has lost the filtering function (that is, bears a large dust filtering task pressure) and another part of the spiral filter screens has not fully exerted the filtering potential is avoided. In the cleaning mode, the rotation of the motor is controlled to control the water pressure during cleaning, and the cleaning effect is ensured.

[0003] In the prior art including the above-mentioned patent, when the atomized gas is used for dust suppression, the fog adsorbing dust will float in the air for a period of time before falling to the ground. The existing device has two problems: first, the floating time and moving distance of the water mist in the air are affected by the environment wind. When the environment wind reaches level three and above (the construction site six-level wind stops work), the water mist floating time and distance will increase, which not only makes the workers easy to inhale more dust, but also may cause unnecessary pollution to other non-construction areas after the water mist falls to the ground and dries. Second, the water mist adsorbing dust falls to the ground, and after the water vapor dries, secondary dust is easily generated due to factors such as personnel movement, equipment operation or environmental wind, increasing the working pressure of the equipment. Although the above-mentioned patent has a filtering component, it can only filter, and the collected dust will still fall to the ground, causing secondary dust under the same factors. The self-cleaning component of the patent equipment can prolong the service life of the device and reduce the maintenance frequency, but it increases the overall device use cost and has a complex structure, which greatly increases the construction site cost, resulting in less actual purchase amount. Moreover, the equipment is a circular or fan-shaped area with the fog cannon machine as the center and the range as the radius, which is suitable for scenes such as blasting and breaking that generate a large amount of dust. If it is used for daily dust control on the construction site, the cost is too high, and the dust suppression equipment used around the construction site has the above-mentioned problems and the probability of the sprayed water mist drifting outside the construction site. SUMMARY

[0004] The problem to be solved by the present application is that water mist is easy to carry dust and drift to other places under the action of wind and cause adverse effects.

[0005] To solve the above technical problems, the technical scheme of the present application is: an environment-friendly dust suppression device for road and bridge construction, comprising a mounting column and a spraying assembly and a cleaning assembly mounted on the top and inside of the mounting column, the number of mounting columns is two or more, a baffle is fixedly arranged between each two mounting columns, the length of the baffle can be adjusted according to the distance of the water mist sprayed by the spraying assembly, the spraying assembly is used for spraying water mist and inhaling contaminated water mist, the spraying assembly can also drive the related components in the cleaning assembly to work at the same time, the cleaning assembly is used for filtering, collecting and reducing water consumption of the collected water mist, the spraying assembly comprises a collecting pipe, the collecting pipe is arranged on one side of the upper end of the mounting column, the collecting pipe is used for collecting and guiding the water mist to the lower side, the other side of the collecting pipe is provided with a mounting pipe, the mounting pipe is also mounted on the mounting column, seven atomizing nozzles are fixedly arranged on the side of the mounting pipe away from the mounting column, and an included angle exists between the atomizing nozzles and the baffle.

[0006] The inside of the mounting column is provided with a Venturi tube which is located at the lower end of the collecting tube and connected therewith, the side branch pipe of the Venturi tube penetrates through the partition plate in the middle of the inside of the mounting column and is communicated with the cavity on the other side of the mounting column, the lower end of the Venturi tube is fixedly provided with a water supply pipe, the cleaning assembly comprises a filter screen which is fixedly arranged at the cavity in the mounting column, the filter screen is located at one side of the side branch pipe of the Venturi tube, the included angle between the atomizing nozzle and the baffle is related to the spraying angle of the atomizing nozzle, and the outer side of the fan-shaped water mist sprayed by the atomizing nozzle should be located at the inner side of the inclined surface of the collecting tube.

[0007] Preferably, the opposite sides of the collecting tube and the mounting tube are both fixedly provided with sliding rails, a plurality of through holes are formed in the sliding rails, and the collecting tube and the mounting tube are connected with the mounting column through the sliding rails and the through holes in the sliding rails.

[0008] Preferably, the Venturi tube is provided with two, and the water supply pipe is composed of two parts, one part of which is located in the inside of the mounting column, and the other part is located outside the mounting column and connected with an external water pump.

[0009] Preferably, the filter screen is arranged obliquely, a limiting ring is arranged at the side of the filter screen away from the side branch pipe of the Venturi tube, and the limiting ring is fixedly connected with the mounting column.

[0010] Preferably, each group of the limiting rings is provided with two, a total of five groups of the limiting rings are provided, the five groups of the limiting rings are parallel to each other, the inside of each group of the limiting rings is provided with a clamping plate, a total of two clamping plates are provided in each group of the limiting rings, a cloth strip is arranged between the two clamping plates, five cloth strips are arranged between the two clamping plates, the width of the five cloth strips after the clamping plates is consistent with that of the filter screen, a reinforcing joint is fixedly arranged at the end of the cloth strip, and the end of the cloth strip is in contact with the surface of the filter screen.

[0011] Preferably, a spiral rod is arranged below the filter screen, the spiral rods are symmetrically arranged along the center line of the mounting column, the spiral rods are not in contact with each other, the lower end of the spiral rod is rotationally connected with the mounting column, a discharging bin is formed at the connection between the spiral rod and the mounting column, an operation bin is formed below the discharging bin through the mounting column, and a sealing plate is fixedly arranged outside the discharging bin.

[0012] Preferably, the lower end of the spiral rod penetrates through the mounting column between the discharging bin and the operation bin and is fixedly provided with a gear through a bolt, the gear is located at the upper end of the inside of the operation bin, the gear is rotationally connected with the mounting column, the gears at the lower ends of the two spiral rods are meshed with each other, the screw thread direction of the bolt at the lower end of the gear is opposite to the rotating direction of the gear, the upper end of the spiral rod is located below the lowermost limiting ring, and a funnel-shaped cavity is formed around the upper end of the spiral rod through the mounting column.

[0013] As preferred, an inclined surface is arranged in the collecting pipe in the spraying assembly, the collecting pipe inclined surface is horizontally arranged between the atomizing nozzle, the inclined surface of the collecting pipe is arranged on the side far from the water supply pipe, the atomizing nozzle is inclined to the side of the water supply pipe, the water supply pipe is always arranged on the inner side of the baffle (the side close to the construction area), and the collecting pipe and the mounting pipe adjacent to the corner need to be connected through the connecting block.

[0014] As preferred, the screw rod and the sealing plate in the cleaning assembly can be selected to be installed or not according to actual conditions, and the part of the screw rod penetrating through the mounting column is provided with a sealing element.

[0015] Compared with the prior art, the technical scheme of the present application has the following advantages:

[0016] (1) Through the arrangement of the mounting column, the baffle and the spraying assembly, firstly, the device itself can play the role of a traditional construction site fence, so that after the workers complete the installation, they only need to connect the water supply pipe to the lower side of the Venturi tube to make the device start working directly, which has the advantages of convenient installation and less installation time compared with the existing spraying pipe installed above the fence, secondly, through the collecting pipe and the atomizing nozzle in the spraying assembly, a layer of mist curtain can be formed above the fence, which can not only reduce the overflow of dust, but also collect the mist curtain carrying dust in time to avoid its long-time floating in the air, so as to reduce the wet dust falling to the ground and prevent the wet dust from drying to cause secondary dust, thereby slowing down the speed of dust increase in the construction site and reducing the working load of the dust falling equipment; moreover, the included angle between the water mist sprayed by the atomizing nozzle and the collecting pipe can further prevent the dust in the construction site from overflowing, which not only avoids unnecessary pollution of the water mist carrying dust to the non-construction area, but also reduces the deviation of the mist curtain when encountering crosswind, so as to avoid the direct floating of the water mist with the wind, and further prevent a large amount of water mist from falling on the pedestrians outside the construction site, finally, under the action of the Venturi tube, the water mist sprayed can be used again, which not only reduces the consumption of water resources, but also pressurizes the water in the water supply pipe to have a higher initial velocity when sprayed, so as to ensure the quality of the mist curtain to a certain extent;

[0017] (2) Through the setting of the cleaning assembly, the collected water mist can be filtered, so that the Venturi tube can not spray the dust again when the water mist is used for secondary use, and the cleaning assembly can also collect the filtered dust, so that not only the service life of the filter screen can be prolonged, but also the influence of the dust on the filter screen on the suction force of the Venturi tube can be reduced, so that the work of the collecting pipe can be guaranteed to a certain extent, and the collecting pipe and the atomizing nozzle can be assisted to cope with different wind speeds and different dust conditions by changing the part combination mode in the cleaning assembly, so that the dust reduction demand under different construction stages and different wind speeds can be met, and the dust collection demand under different dust reduction requirements can be met. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole three-dimensional structure schematic diagram of the application;

[0019] Figure 2 It is a single structure schematic diagram of the application;

[0020] Figure 3 It is an installation column cross-section structure schematic diagram of the application;

[0021] Figure 4 It is an installation column cross-section structure schematic diagram of the application; Figure 3 It is an enlarged structure schematic diagram of A in the application;

[0022] Figure 5 It is an enlarged structure schematic diagram of A in the application;

[0023] Figure 6 It is a dust sweeping structure schematic diagram in the cleaning assembly of the application;

[0024] Figure 7 It is an installation column cross-section structure schematic diagram of the application;

[0025] Figure 8 It is an enlarged structure schematic diagram of B in the application; Figure 7

[0026] It is an installation column cross-section structure schematic diagram of the application; Figure 9

[0027] It is a connection block three-dimensional structure schematic diagram of the application. Figure 10

[0028] ​In the diagram: 1. Mounting column; 2. Baffle; 3. Spray assembly; 301. Collection pipe; 302. Mounting pipe; 303. Atomizing nozzle; 304. Slide rail; 305. Venturi tube; 306. Water supply pipe; 4. Cleaning assembly; 401. Filter screen; 402. Limiting ring; 403. Clamping plate; 404. Cloth strip; 405. Reinforcing joint; 406. Spiral rod; 407. Discharge bin; 408. Sealing plate; 409. Operating chamber; 410. Gear; 5. Connecting block. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0030] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "comprising" or "including," and similar terms used in this disclosure, mean that an element or object preceding the term encompasses the elements or objects listed following the term and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0031] like Figures 1 to 10 As shown, the present invention provides an environmentally friendly dust suppression device for road and bridge construction, including an installation column 1 and a spray component 3 and a cleaning component 4 installed on the top and inside of the installation column 1. The number of installation columns 1 is two or more, and a baffle 2 is fixedly installed between each two installation columns 1. The length of the baffle 2 can be adjusted according to the distance of the water mist sprayed by the spray component 3. The spray component 3 is used to spray water mist and suck up the polluted water mist. The spray component 3 can also drive the relevant components in the cleaning component 4 to work at the same time. The cleaning component 4 is used to filter, collect and reduce water consumption of the collected water mist. The spray component 3 includes a collection pipe 301, which is set on one side of the upper end of the installation column 1. The collection pipe 301 is used to collect water mist and guide it downward. An installation pipe 302 is set on the other side of the collection pipe 301. The installation pipe 302 is also installed on the installation column 1. Seven atomizing nozzles 303 are fixedly installed on the side of the installation pipe 302 away from the installation column 1. There is an angle between the atomizing nozzles 303 and the baffle 2.

[0032] The inside of the installation column 1 is provided with a Venturi tube 305, which is located at the lower end of the collecting pipe 301 and connected therewith, the side branch pipe of the Venturi tube 305 penetrates through the partition plate in the middle of the inside of the installation column 1 and is communicated with the cavity on the other side of the installation column 1, the lower end of the Venturi tube 305 is fixedly provided with a water supply pipe 306, the cleaning assembly 4 comprises a filter screen 401, which is fixedly arranged at the cavity in the installation column 1, the filter screen 401 is located on one side of the side branch pipe of the Venturi tube 305, the included angle between the atomizing nozzle 303 and the baffle 2 is related to the spray angle of the atomizing nozzle 303, and the outer side of the fan-shaped water mist sprayed by the atomizing nozzle 303 should be located on the inner side of the inclined surface of the collecting pipe 301.

[0033] The opposite sides of the collecting pipe 301 and the installation pipe 302 are fixedly provided with sliding rails 304, a plurality of through holes are formed in the sliding rails 304, and the collecting pipe 301 and the installation pipe 302 are connected with the installation column 1 through the sliding rails 304 and the through holes in the sliding rails 304.

[0034] The Venturi tube 305 is provided with two, and the water supply pipe 306 is composed of two parts, one part is located in the inside of the installation column 1, and the other part is located outside the installation column 1 and connected with the external water pump.

[0035] The filter screen 401 is arranged obliquely, the side of the filter screen 401 away from the side branch pipe of the Venturi tube 305 is provided with a limiting ring 402, and the limiting ring 402 is fixedly connected with the installation column 1.

[0036] Each group of limiting rings 402 is provided with two, and the five groups of limiting rings 402 are parallel to each other, the inside of each group of limiting rings 402 is provided with a clamping plate 403, and the two clamping plates 403 are provided in each group of limiting rings 402, and the cloth strips 404 are arranged between the two clamping plates 403, and the five cloth strips 404 are arranged between the two clamping plates 403, the width of the five cloth strips 404 arranged behind the clamping plate 403 is consistent with that of the filter screen 401, the end of the cloth strip 404 is fixedly provided with a reinforcing joint 405, and the end of the cloth strip 404 is in contact with the surface of the filter screen 401.

[0037] The lower side of the filter screen 401 is provided with a spiral rod 406, the spiral rod 406 is symmetrically arranged along the center line of the installation column 1, the spiral rod 406 is not in contact with the spiral rod 406, the lower end of the spiral rod 406 is rotatably connected with the installation column 1, the connection position of the spiral rod 406 and the installation column 1 is provided with a discharging bin 407, the lower side of the discharging bin 407 is provided with an operation bin 409 through the installation column 1, and the outer side of the discharging bin 407 is fixedly provided with a sealing plate 408.

[0038] The lower end of the screw rod 406 passes through the mounting column 1 between the discharge bin 407 and the operation bin 409 and is provided with a gear 410 fixed by bolts, the gear 410 is located at the upper end of the inside of the operation bin 409, the gear 410 is rotationally connected with the mounting column 1, the gears 410 at the lower ends of the two screw rods 406 are meshed with each other, the thread direction of the bolt at the lower end of the gear 410 is opposite to the rotating direction of the gear 410, the upper end of the screw rod 406 is located below the lowermost limiting ring 402, and a funnel-shaped cavity is formed around the upper end of the screw rod 406 through the mounting column 1.

[0039] An inclined surface is formed in the collecting pipe 301 in the spray assembly 3, the inclined surface of the collecting pipe 301 is horizontally arranged with the atomizing nozzle 303, the inclined surface of the collecting pipe 301 is formed on the side away from the water supply pipe 306, the atomizing nozzle 303 is inclined to the side of the water supply pipe 306, the water supply pipe 306 is always arranged on the inner side of the baffle 2 close to the construction area, and the adjacent collecting pipe 301 and mounting pipe 302 arranged at the corner need to be connected through the connecting block 5.

[0040] The screw rod 406 and the sealing plate 408 in the cleaning assembly 4 can be selected to be installed or not according to actual conditions in use, and the part of the screw rod 406 passing through the mounting column 1 is provided with a sealing element.

[0041] The working principle and use process of the application are as follows: in use, first, the external water pump is started, the atomizing nozzle 303 is supplied with water through the water supply pipe 306, the high-pressure water flow in the water supply pipe 306 enters the mounting pipe 302 through the Venturi tube 305, and the pressure reaches a predetermined value to start working, and the water mist sprayed out of the atomizing nozzle 303 has two conditions:

[0042] One is that most of the water mist enters the collecting pipe 301 through the upper part of the baffle 2 and moves downward under the action of the Venturi tube 305, the water mist carrying dust enters the cavity where the filter screen 401 is located, passes through the filter screen 401 under the suction of the Venturi tube 305, the dust is filtered by the filter screen 401, and the filtered water mist reenters the Venturi tube 305, mixes with the internal high-pressure water flow, and is sprayed out of the atomizing nozzle 303 again;

[0043] The other is that a small part of the water mist is sprayed out of the collecting pipe 301 and reenters the collecting pipe 301 when the wind starts, and the water mist outside does not deviate by a large amplitude,

[0044] After the water mist carrying dust is collected, four working modes are formed according to different configurations:

[0045] When the screw rod 406 and the sealing plate 408 are installed, the suction force generated by the Venturi tube 305 at the filter screen 401 is the strongest, dust filtered by the filter screen 401 adheres to the surface, one side of the cloth strip 404 swings with the gas flow in the installation column 1, knocks and sweeps the filter screen 401 to make dust fall down and accumulate around the screw rod 406, when cleaning, the sealing plate 408 is opened, a container for collection is placed outside the discharge bin 407, the two screw rods 406 are driven to rotate by connecting the bolts below the gear 410 through a drill, a wrench or other tools, and dust is squeezed into the container, which is suitable for the working condition that dust is moderate and the wind speed is large,

[0046] When the screw rod 406 and the sealing plate 408 are not installed, the suction force generated by the Venturi tube 305 at the filter screen 401 is the weakest, a dust collector or other collection equipment needs to be placed outside the discharge bin 407 for a long time, most of the water mist is sucked into the collection equipment through the discharge bin 407, and a small part of the water mist returns to the Venturi tube 305 through the filter screen 401, which can reduce the pressure of the filter screen 401, and is suitable for the working condition that dust is too much and the wind speed is too large (the wind speed is six levels and below),

[0047] When only the screw rod 406 is installed, the suction force of the Venturi tube 305 is only better than that when the screw rod 406 and the sealing plate 408 are not installed, at this time, a collection container needs to be placed outside the discharge bin 407, and a motor or other driving equipment is connected below the screw rod 406, which can quickly discharge the filtered dust, and is suitable for the working condition that dust is more and the wind speed is small,

[0048] When only the sealing plate 408 is installed, the suction force of the Venturi tube 305 is only second to that when the screw rod 406 and the sealing plate 408 are installed, filtered dust automatically passes the original screw rod 406 installation position and accumulates from bottom to top from the discharge bin 407, and is suitable for the working condition that dust is moderate and the wind speed is moderate.

[0049] The above examples are only exemplary embodiments of the present application and are not used to limit the present application, the protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present application within the spirit and protection scope of the present application, and such modifications or equivalent replacements are also regarded as falling within the protection scope of the present application.

Claims

1. An environmentally friendly dust falling device for road and bridge construction, comprising a mounting column (1) and a spraying assembly (3) and a cleaning assembly (4) mounted on the top and inside of the mounting column (1), characterized in that: The number of the mounting column (1) is two or more, and baffles (2) are fixedly arranged between every two mounting columns (1), the length of the baffle (2) can be adjusted according to the distance of the water mist sprayed by the spraying assembly (3), the spraying assembly (3) is used for spraying water mist and inhaling contaminated water mist, the spraying assembly (3) can also drive the related components in the cleaning assembly (4) to work together during work, the cleaning assembly (4) is used for filtering, collecting and reducing water consumption of the collected water mist, the spraying assembly (3) comprises a collecting pipe (301) arranged on one side of the upper end of the mounting column (1), the collecting pipe (301) is used for collecting and guiding water mist to the lower side, the other side of the collecting pipe (301) is provided with a mounting pipe (302) which is also mounted on the mounting column (1), and seven atomizing nozzles (303) are fixedly arranged on the side of the mounting pipe (302) away from the mounting column (1), and an angle exists between the atomizing nozzle (303) and the baffle (2). The inside of the mounting column (1) is provided with a venturi tube (305), the venturi tube (305) is located at the lower end of the collecting pipe (301) and connected with the collecting pipe (301), the side branch pipe of the venturi tube (305) penetrates through the partition plate in the middle of the inside of the mounting column (1) and is in communication with the cavity on the other side of the mounting column (1), the lower end of the venturi tube (305) is fixedly provided with a water supply pipe (306), the cleaning assembly (4) comprises a filter screen (401) fixedly arranged at the cavity in the mounting column (1), the filter screen (401) is located on one side of the side branch pipe of the venturi tube (305), the angle between the atomizing nozzle (303) and the baffle (2) is related to the spraying angle of the atomizing nozzle (303), and the outer side of the fan-shaped water mist sprayed by the atomizing nozzle (303) should be located on the inner side of the inclined surface of the collecting pipe (301).

2. The environment-friendly dust-settling device for road and bridge construction according to claim 1, characterized in that: The opposite sides of the collecting pipe (301) and the mounting pipe (302) are fixedly provided with sliding rails (304), a plurality of through holes are formed in the sliding rails (304), and the collecting pipe (301) and the mounting pipe (302) are connected with the mounting column (1) through the sliding rails (304) and the through holes in the sliding rails (304).

3. The environment-friendly dust-settling device for road and bridge construction of claim 1, characterized in that: The venturi tube (305) is provided with two, and the water supply pipe (306) is composed of two parts, one part is located in the inside of the mounting column (1), and the other part is located outside the mounting column (1) and connected with the external water pump.

4. The environment-friendly dust-settling device for road and bridge construction of claim 1, characterized in that: The filter screen (401) is arranged in an inclined mode, a limiting ring (402) is arranged on the side of the filter screen (401) away from the side branch pipe of the venturi tube (305), and the limiting ring (402) is fixedly connected with the mounting column (1).

5. The environment-friendly dust-settling device for road and bridge construction of claim 4, characterized in that: The limiting ring (402) is provided with two in each group, and five groups of the limiting ring (402) are provided, and the five groups of the limiting ring (402) are parallel to the filter screen (401), and the inside of each group of the limiting ring (402) is provided with a clamping plate (403), and the clamping plate (403) is provided with two in each group of the limiting ring (402), and the two clamping plates (403) are provided with cloth strips (404) therebetween, and the cloth strips (404) are provided with five between the two clamping plates (403), and the width of the five cloth strips (404) installed behind the clamping plate (403) is consistent with the filter screen (401), and the end of the cloth strip (404) is fixedly provided with a reinforcing joint (405), and the end of the cloth strip (404) is in contact with the surface of the filter screen (401).

6. The environment-friendly dust-settling device for road and bridge construction of claim 5, characterized in that: The lower side of the filter screen (401) is provided with a spiral rod (406), the spiral rod (406) is symmetrically provided with two along the center line of the mounting column (1), the spiral rod (406) is not in contact, the lower end of the spiral rod (406) is rotatably connected with the mounting column (1), the connecting part of the spiral rod (406) and the mounting column (1) is provided with a discharge bin (407), the lower side of the discharge bin (407) is provided with an operation bin (409) through the mounting column (1), and the outer side of the discharge bin (407) is fixedly provided with a sealing plate (408).

7. The environment-friendly dust-settling device for road and bridge construction of claim 6, characterized in that: The lower end of the spiral rod (406) passes through the mounting column (1) between the discharge bin (407) and the operation bin (409) and is fixedly provided with a gear (410) through a bolt, the gear (410) is located at the upper end of the inside of the operation bin (409), the gear (410) is rotatably connected with the mounting column (1), the gears (410) at the lower ends of the two spiral rods (406) are meshed with each other, the thread direction of the bolt at the lower end of the gear (410) is opposite to the rotating direction of the gear (410), the upper end of the spiral rod (406) is located below the lowermost limiting ring (402), and a funnel-shaped cavity is formed around the upper end of the spiral rod (406) through the mounting column (1).

8. The environment-friendly dust-settling device for road and bridge construction of claim 1, characterized in that: An inclined surface is formed in the collecting pipe (301) in the spray assembly (3), the inclined surface of the collecting pipe (301) and the atomizing nozzle (303) are horizontally installed, the inclined surface of the collecting pipe (301) is formed on the side away from the water supply pipe (306), the atomizing nozzle (303) is inclined to the side of the water supply pipe (306), the water supply pipe (306) is always installed on the inner side (the side close to the construction area) of the baffle (2), and the collecting pipe (301) and the mounting pipe (302) arranged at the adjacent corners need to be connected through the connecting block (5).

9. The environment-friendly dust-settling device for road and bridge construction of claim 1, characterized in that: The spiral rod (406) and the sealing plate (408) in the cleaning assembly (4) can be selected to be installed or not according to actual conditions, and the part of the spiral rod (406) penetrating through the mounting column (1) is provided with a sealing element.

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