Spraying device for environmental protection and dust falling of engineering machinery
By combining the spray nozzles and adjustment components of the spray device with high-speed airflow and angle adjustment, the problems of coverage and flexibility of traditional dust suppression methods for construction machinery have been solved, achieving large-area, efficient dust suppression and resource conservation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-18
- Publication Date
- 2026-03-17
AI Technical Summary
Traditional dust suppression methods for construction machinery have limited coverage and are difficult to use for large-scale dust suppression. Excessive water flow can cause muddy ground, while insufficient water flow can result in ineffective dust suppression. Furthermore, the lack of flexible adjustment mechanisms leads to resource waste and low dust suppression efficiency.
The system employs a spray device, which includes a mist sprayer, a rotating rod, rotating fan blades, and a ring rotating frame. It mixes water mist with high-speed airflow and, combined with adjustment and receiving components, allows for flexible adjustment of the spray angle and direction to adapt to different operating scenarios and dust concentrations.
It achieves large-area, efficient dust suppression, accurately covers dust sources, saves water resources, improves dust suppression efficiency and applicability, and improves the quality of the working environment.
Smart Images
Figure CN223995709U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of spray devices for environmental protection and dust suppression in engineering machinery, and in particular to a spray device for environmental protection and dust suppression in engineering machinery. Background Technology
[0002] In various engineering machinery operation scenarios, such as construction sites, mining, and port loading and unloading, a large amount of dust is generated as the machinery operates. This dust not only seriously pollutes the surrounding environment, causing a sharp decline in air quality and affecting the health of nearby residents, but it can also damage the machinery itself, accelerating the wear and tear of parts and shortening the equipment's lifespan. Furthermore, the spread of dust can pose safety hazards and, under certain conditions, even lead to explosions. Traditional environmental dust suppression methods for engineering machinery have many shortcomings. Some simple water spraying methods have limited coverage and are difficult to comprehensively suppress dust in large work areas; large water flows can easily create muddy ground, affecting the normal operation of engineering machinery; small water flows result in ineffective dust suppression. Traditional dust suppression equipment often lacks flexible adjustment mechanisms, failing to adjust dust suppression strategies in a timely manner according to different operating conditions and dust concentrations, leading to resource waste and low dust suppression efficiency. Therefore, a spray device for environmental dust suppression in engineering machinery is proposed to solve the above problems. Utility Model Content
[0003] To address the shortcomings of existing technologies, this utility model provides a spray device for environmentally friendly dust suppression in construction machinery, solving many defects of traditional environmentally friendly dust suppression methods for construction machinery. Some simple water spraying dust suppression methods have limited coverage and are difficult to comprehensively suppress dust in large work areas; when the water flow is large, it can easily cause the ground to become muddy, affecting the normal operation and running of construction machinery; when the water flow is small, the dust suppression effect is not ideal. Traditional dust suppression equipment often lacks a flexible adjustment mechanism and cannot adjust the dust suppression strategy in a timely manner according to different operating conditions and dust concentrations, resulting in resource waste and low dust suppression efficiency.
[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a spraying device for environmental protection and dust suppression of engineering machinery, comprising a device body, wherein the device body is provided with a connecting mechanism, the connecting mechanism includes an adjusting component disposed on the top of the device body, a spraying component is connected to the top of the adjusting component, and a receiving component is connected to the side of the adjusting component.
[0005] The spray assembly includes a mist ejector, a pump pipe is connected to the bottom of the mist ejector, an annular rotating frame is rotatably connected to the top of the mist ejector, a nozzle is connected to the top of the annular rotating frame, a rotating rod is driven to the inner wall of the mist ejector, a connecting rotating rod is fixedly connected to the top of the rotating rod, and a rotating fan blade is fixedly connected to the outer wall of the connecting rotating rod.
[0006] A further improvement is that the adjustment assembly includes a water tank fixedly installed on the top of the device body, a drive rod is driven to the top of the water tank, a drive gear is fixedly connected to the outer wall of the drive rod, the drive gear meshes with a meshing gear, a receiving frame is fixedly connected to the top of the meshing gear, an electric rotating rod is driven to the inner wall of the receiving frame, an installation ring is fixedly connected to the inner side of the electric rotating rod, and a push rod is fixedly connected to the top of the device body.
[0007] A further improvement is that the receiving component includes a drive motor, the output end of which is fixedly connected to a threaded push rod, the outer wall of which is threadedly connected to a traction slide, the top of which is fixedly connected to a lifting frame, the inner wall of which is fixedly connected to a bracket, the bottom inner wall of which is slidably connected to a slide rod, and the bottom of which is fixedly connected to a fixing block.
[0008] A further improvement is that the connecting pump pipe is connected to the water tank, and the outer wall of the nozzle is rotatably connected to the inner wall of the annular rotating frame; the high-speed airflow can entrain the surrounding air, so that the water mist and air are fully mixed, improving the dust suppression efficiency; the top of the fog sprayer is rotatably connected to the annular rotating frame, and the outer wall of the nozzle connected to the top of the nozzle is rotatably connected to the inner wall of the annular rotating frame; the nozzle can rotate flexibly within the annular rotating frame to further adjust the spray angle of the water mist.
[0009] A further improvement is that the meshing gear is rotatably connected to the top of the water tank; when the drive gear rotates, the meshing gear rotates accordingly; the receiving frame fixedly connected to the top of the meshing gear changes its angle as the meshing gear rotates, thereby adjusting the spraying direction of the spraying assembly; in different engineering machinery operating areas, the angle of the receiving frame can be adjusted to enable the spraying assembly to accurately perform dust suppression operations on dust sources.
[0010] A further improvement is that the drive motor is fixedly installed on the outer wall of the water tank, and the fixing block is fixedly connected to the outer wall of the water tank; the drive motor is fixedly installed on the outer wall of the water tank, and the threaded push rod fixedly connected to its output end rotates under the drive of the drive motor; due to the thread action, the traction slide connected to the threaded push rod on the outer wall will move along the axial direction of the threaded push rod.
[0011] A further improvement is that the outer wall of the mist sprayer is fixedly installed on the inner wall of the mounting ring; the outer wall of the mist sprayer is fixedly installed on the inner wall of the mounting ring, and the bottom of the mist sprayer is connected to the water tank via a connecting pump pipe; the water in the water tank, under the action of the pumping device in the connecting pump pipe (not described in detail), enters the mist sprayer through the connecting pump pipe; the mist sprayer atomizes the water into tiny water droplets, which are then sprayed outwards by the high-speed airflow to achieve a large-area dust suppression effect.
[0012] By means of the above technical solution, this utility model provides a spray device for environmental protection and dust suppression in engineering machinery, which has at least the following beneficial effects:
[0013] 1. In the spraying component of this utility model, the mist sprayer atomizes water and, with the help of the high-speed airflow generated by the rotating fan blades, enables the water mist to be sprayed to a long distance area, achieving large-area dust suppression; the nozzle can be flexibly adjusted in angle within the annular rotating frame, and combined with the adjustment component for precise adjustment of the spraying direction, it can cover the dust source in all directions, whether in open areas or narrow spaces, effectively suppressing dust, significantly improving the air quality of the working environment of construction machinery, and protecting the health of surrounding personnel.
[0014] 2. The adjustment component of this utility model, through the transmission of drive gears and meshing gears, and the fine adjustment of electric rotating rods, can flexibly adjust the spray angle and range of the spray component according to different working scenarios and dust concentrations; the receiving component can adjust the height of the support frame as needed to adapt to the usage requirements of different engineering machinery; the precise adjustment mechanism avoids the waste of water resources, achieves energy saving and consumption reduction, reduces operating costs, and at the same time improves the applicability and practicality of the spray device under various complex working conditions. Attached Figure Description
[0015] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.
[0016] In the attached diagram:
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the back side structure of this utility model;
[0019] Figure 3 This is a schematic diagram of the oblique side structure of this utility model;
[0020] Figure 4 This is a schematic diagram of the inclined structure of this utility model.
[0021] In the diagram: 1. Device body; 2. Connecting mechanism; 21. Adjusting component; 211. Water tank; 212. Drive rod; 213. Drive gear; 214. Meshing gear; 215. Support frame; 216. Electric rotating rod; 217. Mounting ring; 218. Push rod; 22. Spray assembly; 221. Mist sprayer; 222. Connecting pump pipe; 223. Annular rotating frame; 224. Nozzle; 225. Rotating rod; 226. Connecting rotating rod; 227. Rotating fan blade; 23. Support component; 231. Drive motor; 232. Threaded push rod; 233. Traction slide; 234. Lifting frame; 235. Bracket; 236. Fixing block; 237. Slide rod. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example
[0023] Traditional dust suppression methods for construction machinery have many drawbacks. Simple water spraying methods have limited coverage and are insufficient for comprehensive dust suppression in large work areas; large water flows can easily create muddy ground, affecting the normal operation and movement of construction machinery; small water flows result in ineffective dust suppression. Traditional dust suppression equipment often lacks flexible adjustment mechanisms, failing to adapt to different operating conditions and dust concentrations, leading to resource waste and low dust suppression efficiency. This embodiment provides a spray device for environmental dust suppression in construction machinery. Please refer to... Figures 1-4 An embodiment provides a dust suppression spraying device for engineering machinery, including a device body 1. The device body 1 is provided with a connecting mechanism 2. The connecting mechanism 2 includes an adjusting component 21 disposed on the top of the device body 1. A spraying component 22 is connected to the top of the adjusting component 21, and a receiving component 23 is connected to the side of the adjusting component 21. The spraying component 22 includes a mist ejector 221. A connecting pump pipe 222 is connected to the bottom of the mist ejector 221. An annular rotating frame 223 is rotatably connected to the top of the mist ejector 221. A nozzle 224 is connected to the top of the annular rotating frame 223. A rotating rod 225 is drivenly connected to the inner wall of the mist ejector 221. A connecting rotating rod 226 is fixedly connected to the top of the rotating rod 225. A rotating fan blade 227 is fixedly connected to the outer wall of the connecting rotating rod 226.
[0024] In this embodiment, the outer wall of the mist sprayer 221 is fixedly installed on the inner wall of the mounting ring 217, and its bottom is connected to the water tank 211 via a connecting pump pipe 222. Water in the water tank 211 enters the mist sprayer 221 through the connecting pump pipe 222 under the action of a pumping device (not described in detail). The mist sprayer 221 atomizes the water into tiny water droplets, which are then sprayed outwards by a high-speed airflow, achieving a large-area dust suppression effect. A rotating rod 225 is driven by a connecting rod 226 fixedly connected to the inner wall of the mist sprayer 221. This connecting rod 226 rotates under the drive of an internal power device (such as a motor, not described in detail) within the mist sprayer 221. A rotating fan blade 227 fixedly connected to the outer wall of the connecting rod 226 rotates at high speed with the rotation of the connecting rod 226. The rotation of the rotating fan blade 227 generates a high-speed airflow. On the one hand, the spray speed of the water mist is accelerated, enabling the water mist to be sprayed to a greater distance and expanding the dust suppression range; on the other hand, the high-speed airflow can entrain the surrounding air, allowing the water mist to mix fully with the air and improving the dust suppression efficiency; the top of the sprayer 221 is rotatably connected to the annular rotating frame 223, and the outer wall of the nozzle 224 is rotatably connected to the inner wall of the annular rotating frame 223; the nozzle 224 can rotate flexibly within the annular rotating frame 223 to further adjust the spray angle of the water mist; for example, when it is necessary to focus on dust suppression in a specific direction, the angle of the nozzle 224 can be adjusted to concentrate the water mist onto that area; throughout the spraying process, the sprayer 221, rotating rod 225, connecting rotating rod 226, rotating fan blade 227, annular rotating frame 223 and nozzle 224 cooperate with each other to achieve efficient and flexible spraying dust suppression function.
[0025] Furthermore, the connecting pump pipe 222 is connected to the water tank 211, and the outer wall of the nozzle 224 is rotatably connected to the inner wall of the annular rotating frame 223; the outer wall of the mist sprayer 221 is fixedly installed on the inner wall of the mounting ring 217.
[0026] Furthermore, the rotating fan blade 227, which is fixedly connected to the outer wall of the connecting rod 226, rotates at high speed as the connecting rod 226 rotates. The rotation of the rotating fan blade 227 generates a high-speed airflow, which on the one hand accelerates the spray speed of the water mist, enabling the water mist to be sprayed to a greater distance and expand the dust suppression range; on the other hand, the high-speed airflow can entrain the surrounding air, making the water mist and air fully mixed and improving the dust suppression efficiency. The top of the mist sprayer 221 is rotatably connected to the annular rotating frame 223, and the outer wall of the nozzle 224 connected to the top of the annular rotating frame 223 is rotatably connected to the inner wall of the annular rotating frame 223. Example
[0027] Based on Embodiment 1, the adjustment assembly 21 includes a water tank 211 fixedly installed on the top of the device body 1. A drive rod 212 is drivenly connected to the top of the water tank 211. A drive gear 213 is fixedly connected to the outer wall of the drive rod 212. The drive gear 213 meshes with a meshing gear 214. A support frame 215 is fixedly connected to the top of the meshing gear 214. An electric rotating rod 216 is drivenly connected to the inner wall of the support frame 215. A mounting ring 217 is fixedly connected to the inner side of the electric rotating rod 216. A push rod 218 is fixedly connected to the top of the main body 1; the receiving component 23 includes a drive motor 231, a threaded push rod 232 is fixedly connected to the output end of the drive motor 231, a traction slide 233 is threadedly connected to the outer wall of the threaded push rod 232, a lifting frame 234 is fixedly connected to the top of the traction slide 233, a bracket 235 is fixedly connected to the inner wall of the lifting frame 234, a slide rod 237 is slidably connected to the inner wall of the bottom of the lifting frame 234, and a fixing block 236 is fixedly connected to the bottom of the slide rod 237.
[0028] In this embodiment, the water tank 211 is fixedly installed on the top of the device body 1, providing a water source for the entire spraying device; the drive rod 212 is connected to the top of the water tank 211, and the drive gear 213 is fixedly connected to its outer wall, rotating under the drive of an external power source such as a motor (not described in detail); the drive gear 213 meshes with the meshing gear 214, and due to the gear transmission principle, when the drive gear 213 rotates, the meshing gear 214 rotates accordingly; the support frame 215 fixedly connected to the top of the meshing gear 214 changes its angle as the meshing gear 214 rotates, thereby adjusting... The spray direction of the entire spray assembly 22; in different engineering machinery operating areas, the angle of the receiving frame 215 can be adjusted to enable the spray assembly 22 to accurately suppress dust sources; the electric rotating rod 216, which is connected to the inner wall of the receiving frame 215, can rotate under the drive of the motor; the mounting ring 217, which is fixedly connected to the inner side of the electric rotating rod 216, is used to install the mist sprayer 221; by controlling the rotation of the electric rotating rod 216, the angle of the mist sprayer 221 can be further fine-tuned to achieve more precise dust suppression coverage; the push rod 218 is fixedly connected to the top of the device body 1. The positions of the adjustment component 21 and the spray component 22 can be manually adjusted as needed to enhance the flexibility of the device; the drive motor 231 is fixedly installed on the outer wall of the water tank 211, and the threaded push rod 232 is fixedly connected to its output end, which rotates under the drive of the drive motor 231; due to the thread action, the traction slide 233 threadedly connected to the outer wall of the threaded push rod 232 will move along the axial direction of the threaded push rod 232; the lifting frame 234 fixedly connected to the top of the traction slide 233 moves up and down with the movement of the traction slide 233; the inner wall of the lifting frame 234 is fixedly connected to The bracket 235 can be used to place some auxiliary equipment or tools, which is convenient for use when performing dust suppression operations at the construction machinery operation site; the slide rod 237 is slidably connected to the inner wall of the bottom of the lifting frame 234, and the fixing block 236 is fixedly connected to the outer wall of the water tank 211; the setting of the slide rod 237 and the fixing block 236 provides stable support and guidance for the movement of the lifting frame 234, ensuring the stability of the lifting frame 234 during the up and down movement; the receiving component 23 can adjust the height of the lifting frame 234 according to the actual operation requirements to adapt to different working scenarios.
[0029] Furthermore, the meshing gear 214 is rotatably connected to the top of the water tank 211; the drive motor 231 is fixedly installed on the outer wall of the water tank 211, and the fixing block 236 is fixedly connected to the outer wall of the water tank 211.
[0030] Furthermore, by controlling the rotation of the electric rotating rod 216, the angle of the mist sprayer 221 can be further fine-tuned to achieve more precise dust suppression coverage; the push rod 218 fixedly connected to the top of the device body 1 can be manually adjusted to assist in adjusting the position of the adjustment component 21 and the spray component 22 when needed, enhancing the flexibility of the device; the drive motor 231 is fixedly installed on the outer wall of the water tank 211, and the threaded push rod 232 fixedly connected to its output end rotates under the drive of the drive motor 231; due to the thread action, the traction slide 233 threadedly connected to the outer wall of the threaded push rod 232 will move along the axial direction of the threaded push rod 232; the lifting frame 234 fixedly connected to the top of the traction slide 233 moves up and down as the traction slide 233 moves.
[0031] Working principle: The water tank 211 is fixedly installed on the top of the device body 1, providing water for the entire spraying device; the drive rod 212 is connected to the top of the water tank 211, and the drive gear 213 is fixedly connected to its outer wall, rotating under the drive of an external power source such as a motor (not described in detail); the drive gear 213 meshes with the meshing gear 214, and due to the gear transmission principle, when the drive gear 213 rotates, the meshing gear 214 rotates accordingly; the support frame 215 fixedly connected to the top of the meshing gear 214 changes angle with the rotation of the meshing gear 214, thereby adjusting the spraying direction of the spraying assembly 22; in different engineering... In the mechanical operation area, the angle of the receiving frame 215 can be adjusted to enable the spray assembly 22 to accurately suppress dust from the dust source. The electric rotating rod 216, which is connected to the inner wall of the receiving frame 215, can rotate under the drive of the motor. The mounting ring 217, which is fixedly connected to the inner side of the electric rotating rod 216, is used to install the mist sprayer 221. By controlling the rotation of the electric rotating rod 216, the angle of the mist sprayer 221 can be further fine-tuned to achieve more precise dust suppression coverage. The push rod 218, which is fixedly connected to the top of the device body 1, can be manually adjusted to assist in adjusting the position of the adjusting assembly 21 and the spray assembly 22 when needed, enhancing the flexibility of the device.
[0032] The outer wall of the mist sprayer 221 is fixedly installed on the inner wall of the mounting ring 217, and its bottom is connected to the water tank 211 via a connecting pump pipe 222. Water in the water tank 211 enters the mist sprayer 221 through the connecting pump pipe 222 under the action of a pumping device (not described in detail). The mist sprayer 221 atomizes the water into tiny droplets, which are then sprayed outwards by a high-speed airflow, achieving a large-area dust suppression effect. A rotating rod 225 is connected to the inner wall of the mist sprayer 221, and a connecting rod 226 is fixedly connected to its top. This connecting rod rotates under the drive of an internal power device (such as a motor, not described in detail) within the mist sprayer 221. A rotating fan blade 227 is fixedly connected to the outer wall of the connecting rod 226, rotating at high speed with the rotation of the connecting rod 226. The rotation of the rotating fan blade 227 generates a high-speed airflow, which... The high-speed airflow accelerates the spray speed of the water mist, enabling it to reach a greater distance and expand the dust suppression range. Furthermore, the high-speed airflow can entrain surrounding air, ensuring thorough mixing of the water mist and air, thus improving dust suppression efficiency. The top of the sprayer 221 is rotatably connected to an annular rotating frame 223, with the outer wall of the nozzle 224 rotatably connected to the inner wall of the annular rotating frame 223. The nozzle 224 can rotate flexibly within the annular rotating frame 223, further adjusting the spray angle of the water mist. When targeted dust suppression is needed in a specific direction, the angle of the nozzle 224 can be adjusted to concentrate the water mist onto that area. Throughout the spraying process, the sprayer 221, rotating rod 225, connecting rod 226, rotating fan blade 227, annular rotating frame 223, and nozzle 224 work together to achieve efficient and flexible dust suppression.
[0033] The drive motor 231 is fixedly installed on the outer wall of the water tank 211, and the threaded push rod 232 is fixedly connected to its output end, which rotates under the drive of the drive motor 231. Due to the thread action, the traction slide 233, which is threadedly connected to the outer wall of the threaded push rod 232, will move along the axial direction of the threaded push rod 232. The lifting frame 234, which is fixedly connected to the top of the traction slide 233, moves up and down with the movement of the traction slide 233. The bracket 235, which is fixedly connected to the inner wall of the lifting frame 234, can be used to place some auxiliary equipment or tools, which is convenient for use when performing dust suppression operations at the construction machinery operation site. The slide rod 237, which is slidably connected to the inner wall of the bottom of the lifting frame 234, has a fixed block 236 fixedly connected to its bottom, which is fixedly connected to the outer wall of the water tank 211. The setting of the slide rod 237 and the fixed block 236 provides stable support and guidance for the movement of the lifting frame 234, ensuring the stability of the lifting frame 234 during the up and down movement. The receiving component 23 can adjust the height of the lifting frame 234 according to the actual operation requirements to adapt to different working scenarios.
[0034] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0035] 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 spraying device for environmental protection dust fall of construction machinery, comprising a device body (1), characterized in that: The device body (1) is provided with a connecting mechanism (2), the connecting mechanism (2) includes an adjusting assembly (21) arranged at the top of the device body (1), the adjusting assembly (21) is connected with a spraying assembly (22) at the top, and the adjusting assembly (21) is connected with a receiving assembly (23) on the side; The spraying assembly (22) comprises a mist sprayer (221), the bottom of the mist sprayer (221) is communicated with a communication pump pipe (222), the top of the mist sprayer (221) is rotatably connected with an annular rotating frame (223), the top of the annular rotating frame (223) is communicated with a spray head (224), the inner wall of the mist sprayer (221) is drivingly connected with a rotating rod (225), the top of the rotating rod (225) is fixedly connected with a connecting rotating rod (226), and the outer wall of the connecting rotating rod (226) is fixedly connected with a rotating fan blade (227).
2. The spraying device for environmental protection and dust reduction of an engineering machine according to claim 1, characterized in that: The adjusting assembly (21) comprises a water tank (211) fixedly installed at the top of the device body (1), the top of the water tank (211) is drivingly connected with a driving rod (212), the outer wall of the driving rod (212) is fixedly connected with a driving gear (213), the driving gear (213) is engaged with an engagement gear (214), the top of the engagement gear (214) is fixedly connected with a receiving frame (215), the inner wall of the receiving frame (215) is drivingly connected with an electric rotating rod (216), the inner side of the electric rotating rod (216) is fixedly connected with a mounting ring (217), and the top of the device body (1) is fixedly connected with a push rod (218).
3. The spraying device for environmental protection and dust reduction of an engineering machine according to claim 1, characterized in that: The receiving assembly (23) comprises a driving motor (231), the output end of the driving motor (231) is fixedly connected with a threaded push rod (232), the outer wall of the threaded push rod (232) is threadedly connected with a traction sliding frame (233), the top of the traction sliding frame (233) is fixedly connected with a lifting frame (234), the inner wall of the lifting frame (234) is fixedly connected with a bracket (235), the bottom inner wall of the lifting frame (234) is slidingly connected with a sliding rod (237), and the bottom of the sliding rod (237) is fixedly connected with a fixed block (236).
4. The spraying device for environmental protection and dust reduction of an engineering machine according to claim 1, characterized in that: The communication pump pipe (222) is communicated with the water tank (211), and the outer wall of the spray head (224) is rotatably connected to the inner wall of the annular rotating frame (223).
5. The spraying device for environmental protection and dust reduction of an engineering machine according to claim 2, characterized in that: The engagement gear (214) is rotatably connected to the top of the water tank (211).
6. The spraying device for environmental protection and dust reduction of an engineering machine according to claim 3, characterized in that: The driving motor (231) is fixedly installed on the outer wall of the water tank (211), and the fixed block (236) is fixedly connected to the outer wall of the water tank (211).
7. The spraying device for environmental protection and dust reduction of an engineering machine according to claim 1, characterized in that: The outer wall of the mist sprayer (221) is fixedly installed on the inner wall of the mounting ring (217).