Dust suppression spraying device for municipal engineering

Abstract

The utility model discloses a dust suppression spraying device for municipal engineering, which comprises a trailer, a loading disc, a high-pressure water pump and a water tank are respectively arranged above the trailer, the loading disc is arranged on the upper side of the trailer through a slewing bearing, a fog gun assembly capable of pitching and overturning is arranged above the loading disc through a support, the fog gun assembly comprises an axial flow fan and an atomizing cylinder, and the atomizing cylinder is arranged on the upper side of the loading disc. The axial flow fan is coaxially mounted at the tail part of the atomizing cylinder, the atomizing cylinder comprises a cylinder body, four radial spoke pipes are fixedly mounted at the tail part of the cylinder body, a spray pipe is fixedly mounted between the inner ends of the spoke pipes, a plurality of atomizing nozzles are uniformly mounted on the outer side of the spray pipe, and a plurality of spiral blades are uniformly welded on the inner wall of the cylinder body; the annular distribution pipe is welded to the outer side of the barrel, the outer end of the radial pipe is communicated with the distribution pipe, the spray pipe and the atomization spray head which are located in the center can improve the mixing uniformity of water mist and airflow and improve the dust suppression effect, and due to the guiding effect of the spiral blades, the ejected airflow is in a spiral shape, diffusion can be slowed down, and the ejection range can be increased.

Description

Dust suppression spraying device for municipal engineering Technical Field

[0001] This utility model relates to the field of dust removal technology, specifically a dust suppression spray device for municipal engineering. Background Technology

[0002] Municipal engineering generally refers to municipal infrastructure projects, which include civil engineering, pipeline, and equipment installation for urban roads, public transportation, etc. Municipal engineering projects generate a large amount of dust during construction. To prevent dust from being inhaled by humans, dust suppression spraying devices are needed to reduce airborne dust. Currently, dust suppression often uses fog cannons. The structure of a fog cannon can be referenced in Chinese utility model patent announcement number CN220918586U. A fog cannon has a ring of atomizing nozzles at the front end of the cannon barrel, and a fan at the rear blows the generated water mist outwards. To achieve a long range (tens to hundreds of meters) or a large coverage area, fog cannons require high-powered fans and high airflow compression within the barrel. Although the atomizing nozzles distributed along the edge of the cannon mouth face inwards, it is still difficult to mix the water mist into the middle of the airflow. This results in uneven mixing of water mist and airflow, affecting the dust suppression effect. Furthermore, the airflow expands after exiting the cannon mouth, increasing its diameter, while the water mist concentrates more on the outer layer and disperses over a short distance, affecting the range. Summary of the Invention

[0003] The purpose of this invention is to provide a dust suppression spray device for municipal engineering projects, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a dust suppression spraying device for municipal engineering, comprising a trailer, a carrier plate, a high-pressure water pump, and a water tank respectively mounted on the top of the trailer. The carrier plate is mounted on the upper side of the trailer via a slewing bearing. A tiltable and rotatable fog cannon assembly is mounted on the top of the carrier plate via a bracket. The fog cannon assembly includes an axial flow fan and an atomizing cylinder. The axial flow fan is coaxially mounted at the tail of the atomizing cylinder. The atomizing cylinder includes a cylinder body. Four radial spokes are fixedly mounted at the tail of the cylinder body. A spray pipe is fixedly mounted between the inner ends of the spokes. Several atomizing nozzles are evenly mounted on the outer side of the spray pipe. Several spiral blades are evenly welded to the inner wall of the cylinder body. An annular distribution pipe is welded to the outer side of the cylinder body. The outer ends of the spokes are connected to the distribution pipe. The high-pressure water pump is used to draw water from the water tank to the distribution pipe.

[0005] Preferably, an electric cylinder is hinged to the upper side of the carrier plate, and the upper end of the electric cylinder is hinged to the fog cannon assembly and used to push it to pitch and rotate.

[0006] Preferably, the front end of the atomizing cylinder is a funnel shape with an increased diameter, and the rear end of the cylinder is welded with a flange for docking.

[0007] Preferably, a horizontally oriented filter box is fixedly installed in the middle of the inner cavity of the water tank, and a number of uniformly distributed tubular microfiltration membranes are fixedly installed in the filter box. Water passes through the tubular microfiltration membranes under the action of gravity to achieve filtration.

[0008] Compared with the prior art, the beneficial effects of this utility model are: the device draws water from the water tank to the atomizing nozzle by a high-pressure water pump, and the centrally located nozzle and atomizing nozzle can improve the uniformity of water mist and airflow mixing and improve the dust suppression effect. Due to the guiding effect of the spiral blades, the ejected airflow is spiral, which can slow down diffusion and increase the range. Attached Figure Description

[0009] Figure 1 is a schematic diagram of the structure of this utility model;

[0010] Figure 2 is a schematic diagram of the three-dimensional structure of the atomizing cylinder;

[0011] Figure 3 is a schematic diagram of the three-dimensional structure of the atomizing cylinder;

[0012] In the diagram: 1. Trailer; 2. Axial flow fan; 3. Atomizing cylinder; 31. Cylinder body; 32. Distribution pipe; 33. Nozzle; 34. Radial pipe; 35. Spiral blade; 36. Atomizing nozzle; 4. Carrier tray; 5. High-pressure water pump; 6. Electric cylinder; 7. Water tank; 8. Filter box. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0014] Please refer to Figures 1-3. This utility model provides a technical solution: a dust suppression spraying device for municipal engineering, including a trailer 1. A carrier plate 4, a high-pressure water pump 5, and a water tank 7 are respectively installed on the top of the trailer 1. The carrier plate 4 is installed on the upper side of the trailer 1 through a slewing bearing. A fog cannon assembly that can tilt and rotate is installed on the top of the carrier plate 4 through a bracket. An electric cylinder 6 is hinged to the upper side of the carrier plate 4. The upper end of the electric cylinder 6 is hinged to the fog cannon assembly and is used to push it to tilt and rotate. A generator set is also installed on the trailer 1 as a power source.

[0015] The fog cannon assembly includes an axial flow fan 2 and an atomizing cylinder 3. The axial flow fan 2 is coaxially mounted at the tail of the atomizing cylinder 3. The atomizing cylinder 3 includes a cylinder body 31. The front end of the cylinder body 31 is a trumpet shape with an increased diameter. A flange for docking is welded to the tail end of the cylinder body 31. Four radial spokes 34 are fixedly installed at the tail end of the cylinder body 31. A nozzle 33 is fixedly installed between the inner ends of the spokes 34. Several atomizing nozzles 36 are evenly installed on the outer side of the nozzle 33. An annular distribution pipe 32 is welded to the outer side of the cylinder body 31. The outer ends of the spokes 34 are connected to the distribution pipe 32. A high-pressure water pump 5 is used to draw water from the water tank 7 to the distribution pipe 32. The nozzle 33 and atomizing nozzles 36 are located in the middle to improve the uniformity of water mist and airflow mixing.

[0016] Multiple spiral blades 35 are uniformly welded to the inner wall of the cylinder 31. The guiding effect of the spiral blades 35 makes the ejected airflow spiral, which helps to slow down the diffusion of the airflow and increase the range. A horizontal filter box 8 is fixedly installed in the middle of the inner cavity of the water tank 7. Several evenly distributed tubular microfiltration membranes (commercially available mature products) are fixedly installed in the filter box 8. The filter box 8 is a shell structure welded from metal plates. Several vertical through-holes are distributed on the filter box 8, and each hole corresponds to the installation of a tubular filter membrane. Water passes through the tubular microfiltration membrane under the action of gravity to achieve filtration, filtering out impurities in the water and reducing clogging of the atomizing nozzle.

[0017] Working principle: The device uses a high-pressure water pump 5 to draw water from the water tank 7 and spray it out from the atomizing nozzle 36. The atomizing nozzle 36 located in the middle can improve the uniformity of mixing with the airflow. Due to the guiding effect of the spiral blades 35, the ejected airflow is spiral, which can slow down diffusion and increase the range. Moreover, the spiral airflow can improve the uniformity of mixing with polluted air.

[0018] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dust suppression spraying device for municipal engineering, comprising a trailer (1), wherein a carrier plate (4), a high-pressure water pump (5), and a water tank (7) are respectively mounted on the top of the trailer (1), the carrier plate (4) is mounted on the upper side of the trailer (1) via a slewing bearing, and a tiltable and tiltable fog cannon assembly is mounted on the top of the carrier plate (4) via a bracket, characterized in that: The fog cannon assembly includes an axial flow fan (2) and an atomizing cylinder (3). The axial flow fan (2) is coaxially mounted at the tail of the atomizing cylinder (3). The atomizing cylinder (3) includes a cylinder body (31). Four radial radial tubes (34) are fixedly installed at the tail of the cylinder body (31). A nozzle (33) is fixedly installed between the inner ends of the radial tubes (34). Several atomizing nozzles (36) are evenly installed on the outer side of the nozzle (33). Several spiral blades (35) are evenly welded on the inner wall of the cylinder body (31). An annular distribution pipe (32) is welded on the outer side of the cylinder body (31). The outer ends of the radial tubes (34) are connected to the distribution pipe (32). The high-pressure water pump (5) is used to pump water from the water tank (7) to the distribution pipe (32).

2. The dust suppression spray device for municipal engineering according to claim 1, characterized in that: An electric cylinder (6) is hinged to the upper side of the carrier plate (4). The upper end of the electric cylinder (6) is hinged to the fog cannon assembly and used to push it to pitch and rotate.

3. The dust suppression spray device for municipal engineering according to claim 1, characterized in that: The front end of the cylinder (31) is a trumpet shape with an increased diameter, and the rear end of the cylinder (31) is welded with a flange for docking.

4. The dust suppression spray device for municipal engineering according to claim 1, characterized in that: A horizontal filter box (8) is fixedly installed in the middle of the inner cavity of the water tank (7). Several uniformly distributed tubular microfiltration membranes are fixedly installed in the filter box (8). Water passes through the tubular microfiltration membranes under the action of gravity to achieve filtration.

Images