A dust removal device for engineering construction
By adapting the skeleton structure and rubber regulating cylinder in the fog cannon mechanism, the problem of unstable air duct was solved, and the dust suppression device achieved stable and efficient spraying, thus improving the dust removal effect at the construction site.
Patent Information
- Application Number
- CN202511284426.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-09
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2045-09-09
AI Technical Summary
When the diameter of the duct in the existing dust suppression device is changed, the duct becomes unstable and easily deformed, which affects the dust suppression effect.
The fog cannon mechanism includes a first frame, a stabilizing arc plate, a moving ring, and a push rod. By changing the frame structure and utilizing the adaptive matching of the rubber adjusting cylinder, stable keel support is provided to ensure the stability of the air duct. Multiple stabilizing arc plates form a ring-shaped support to support the deformation center of the rubber adjusting cylinder and prevent deformation.
It enables adjustment of spraying distance under the same conditions, ensuring the stability and efficiency of dust suppression operations, avoiding duct crossing and deformation, and improving the effectiveness of the device.
Smart Images

Figure CN120885004B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of dust suppression equipment technology, and in particular to a dust removal device for engineering construction. Background Technology
[0002] Construction engineering refers to the physical engineering project formed by the construction of various types of buildings and their ancillary facilities, as well as the installation of supporting lines, pipelines, and equipment. "Buildings" specifically refer to projects with roofs, beams, columns, walls, and foundations, forming internal spaces to meet people's needs for production, living, learning, and public activities. It is well known that a large amount of dust is generated during construction, causing serious environmental pollution. Therefore, dust removal devices are an indispensable component in the construction process.
[0003] A search revealed that the Chinese patent "A Fog Cannon for Dust Suppression in Coal Mine Roadways" (authorization announcement number CN 110374662B) utilizes a design with a rubber adjusting pipe, hydraulic rod, and pressure ring. This allows the fog cannon to freely adjust the diameter of the rubber adjusting pipe according to actual needs and site conditions, thereby freely adjusting the water pressure and discharge distance. However, its wind guidance relies on a rubber adjusting pipe and lacks a keel support structure. During use, the strong wind inside the dust suppression cannon can easily cause deformation of the rubber adjusting pipe, affecting the stability of dust suppression. Furthermore, the Chinese patent "Fog Cannon" (authorization announcement number CN 112974032) also mentions this issue. B” By setting an outer conical arc plate outside the inner cone, the outer conical arc plate can be pushed forward, forming a new hollow frustum-shaped cylinder outside the inner cone, and further reducing the diameter of the frustum-shaped cylinder. Therefore, when the airflow passes through the hollow frustum-shaped cylinder with a smaller diameter formed by the outer conical arc plate, the airflow pressure is greater, and the positions between the high-pressure nozzles are closer, resulting in a more compact fog cloud. Thus, the airflow can carry the fog cloud a greater distance, thereby increasing the range of the fog cannon. The range of the fog cannon is increased without increasing the fan power, and the adjustment method is more economical and practical. Although the first and second sliding plates can be used to compensate for the change in diameter by radially alternating the first and second sliding plates, this results in uneven internal air ducts. Uneven air ducts can lead to increased resistance and uneven airflow distribution, affecting the effectiveness of the device. Summary of the Invention
[0004] Therefore, it is necessary to provide an engineering construction dust removal device to address the problem of the inability to maintain the stability of the air duct and the unevenness inside when changing the diameter of the dust suppression cannon barrel air duct.
[0005] A dust removal device for construction projects, comprising:
[0006] The enclosure, mounting frame, and high-pressure water pump are provided, with the mounting frame located at the top of the enclosure and the high-pressure water pump located on the enclosure.
[0007] A fog cannon mechanism includes a second electric push rod, a dust suppression cannon cylinder rotatably connected within a mounting frame, and a rubber adjusting cylinder. The dust suppression cannon cylinder contains a fan and a fixed ring. One end of the fixed ring is hinged to a uniformly distributed first frame, and the other end of the first frame is hinged to a stabilizing arc plate. The telescopic end of the second electric push rod is fixedly connected to a movable ring. One end of the movable ring is hinged to multiple push rods matching the first frame, and the end of each push rod away from the movable ring is hinged to the first frame. One end of the rubber adjusting cylinder is fixedly connected to the fixed ring, and its outer surface is in close contact with the first frame and the stabilizing arc plate.
[0008] In one embodiment, the fog cannon mechanism further includes an adjusting ring slidably connected within the dust suppression cannon barrel. One end of the adjusting ring is hinged to multiple second frames that match the stabilizing arc plates. The end of the second frame away from the adjusting ring is hinged to the stabilizing arc plates. The other end of the rubber adjusting cylinder is fixedly connected to the adjusting ring, and its outer surface is in close contact with the second frames. One end of the dust suppression cannon barrel is provided with an annular water pipe connected to a high-pressure water pump. The adjusting ring is provided with multiple atomizing nozzles, and a connecting pipe is provided between the atomizing nozzles and the annular water pipe. The multiple stabilizing arc plates can form a stable annular support at the connection between the first and second frames, and the closed annular support supports the deformed center of the rubber adjusting cylinder, improving the stability of the rubber adjusting cylinder during device operation.
[0009] In one embodiment, an extension plate is fixedly connected to one side of the inner edge of the stabilizing arc plate, and a movable groove matching the adjacent extension plate is opened on the other side of the inner edge of the stabilizing arc plate. A sliding groove communicating with the movable groove is opened in the stabilizing arc plate. A spring is fixedly connected to one end of the inner wall of the sliding groove, and a slider is fixedly connected to the other end of the spring. The slider passes through the sliding groove and is fixedly connected to the adjacent extension plate.
[0010] In one embodiment, a motor is fixedly mounted on the housing, and the output shaft of the motor and the bottom surface of the mounting bracket are both fixedly connected with meshing bevel gears.
[0011] In one embodiment, a first electric push rod is hinged to the mounting bracket, and the other end of the first electric push rod is hinged to the dust suppression cannon barrel.
[0012] In one embodiment, the upper and lower surfaces of the dust suppression cannon are provided with mounting boxes, the second electric push rod is fixedly installed in the mounting box, and the moving ring is slidably connected to the mounting box.
[0013] In one embodiment, a limiting rod is fixedly connected inside the dust suppression cannon, and the adjusting ring is slidably connected to the limiting rod.
[0014] In one embodiment, the connecting tube is a rubber hose component, and the middle part of the connecting tube is bent into a spiral shape to accommodate the positional movement of the adjusting ring.
[0015] In one embodiment, the dust suppression cannon is provided with two filters for filtering the air intake of the fan. The two filters are staggered inside the dust suppression cannon, and the intersection of the two filters forms a ventilation channel.
[0016] In one embodiment, a circular groove is provided on the housing, and a sliding rod is fixedly connected to the bottom end of the mounting bracket, with the bottom end of the sliding rod sliding within the circular groove.
[0017] The aforementioned fog cannon mechanism changes the frame structure through the operation of the first frame, stabilizing arc plate, moving ring, and pushing rod, and utilizes the adaptive matching of the rubber adjusting cylinder to change the diameter of the ventilation duct inside the dust suppression cannon, thereby adjusting the spraying distance under the same conditions. At the same time, the corresponding second frame and adjusting ring, together with the first frame and stabilizing arc plate, can provide stable support for the rubber adjusting cylinder. During the operation of the device, the rubber adjusting cylinder can overcome its own material limitations and will not deform. Furthermore, the rubber adjusting cylinder will not intersect within the internal ventilation duct, ensuring stable and efficient dust suppression operations.
[0018] Multiple stabilizing arc plates can form a stable annular support at the connection between the first and second frames, and use the closed annular support to support the deformation center of the rubber regulating cylinder, thereby improving the stability of the rubber regulating cylinder during device operation. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;
[0021] Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle;
[0022] Figure 3 This is a schematic diagram of the fog cannon mechanism of the present invention;
[0023] Figure 4 This is an exploded view of the fog cannon mechanism of the present invention;
[0024] Figure 5 This is a schematic diagram showing the connection of the first frame, the moving ring, and the push rod of the present invention;
[0025] Figure 6 For the present invention Figure 5 Enlarged view of point B in the middle;
[0026] Figure 7 This is an exploded view of the multiple stabilizing arc plates of the present invention.
[0027] Figure label:
[0028] 100. Housing; 110. Circular groove; 200. Mounting bracket; 210. Sliding rod; 220. Motor; 230. Bevel gear; 300. First electric push rod; 400. High-pressure water pump; 500. Fog cannon mechanism; 510. Dust suppression cannon barrel; 511. Fan; 512. Mounting box; 513. Filter screen; 520. Fixing ring; 521. First frame; 522. Stabilizing arc plate; 5221. Extension plate; 5222. Movable groove; 5223. Sliding groove; 5224. Slider; 5225. Spring; 523. Second electric push rod; 524. Moving ring; 525. Push rod; 526. Rubber adjusting cylinder; 527. Adjusting ring; 5271. Limiting rod; 528. Second frame; 530. Annular water pipe; 531. Atomizing nozzle; 532. Connecting pipe. Detailed Implementation
[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of 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 some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0030] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.
[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0033] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.
[0034] The following is combined Figures 1-7 This invention describes a dust removal device for engineering construction.
[0035] In one embodiment, a dust removal device for engineering construction includes:
[0036] The enclosure 100, the mounting bracket 200 and the high-pressure water pump 400 are provided. The mounting bracket 200 is located at the top of the enclosure 100 and the high-pressure water pump 400 is located on the enclosure 100.
[0037] The fog cannon mechanism 500 includes a second electric push rod 523, a dust suppression cannon 510 rotatably connected to the mounting frame 200, and a rubber adjusting cylinder 526. The dust suppression cannon 510 is equipped with a fan 511 and a fixed ring 520 is fixedly connected inside the dust suppression cannon 510. One end of the fixed ring 520 is hinged to a uniformly distributed first frame 521, and the other end of the first frame 521 is hinged to a stabilizing arc plate 522. The telescopic end of the second electric push rod 523 is fixedly connected to a moving ring 524. One end of the moving ring 524 is hinged to a plurality of push rods 525 that match the first frame 521. The end of the push rod 525 away from the moving ring 524 is hinged to the first frame 521. One end of the rubber adjusting cylinder 526 is fixedly connected to the fixed ring 520 and its outer surface is in close contact with the first frame 521 and the stabilizing arc plate 522.
[0038] like Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the fog cannon mechanism 500 also includes an adjusting ring 527 slidably connected to the dust suppression cannon cylinder 510. One end of the adjusting ring 527 is hinged to a plurality of second frames 528 that match the stabilizing arc plate 522. The end of the second frame 528 away from the adjusting ring 527 is hinged to the stabilizing arc plate 522. The other end of the rubber adjusting cylinder 526 is fixedly connected to the adjusting ring 527 and its outer surface is in close contact with the second frame 528. One end of the dust suppression cannon cylinder 510 is provided with an annular water pipe 530 connected to the high-pressure water pump 400. The adjusting ring 527 is provided with a plurality of atomizing nozzles 531. A connecting pipe 532 is provided between the atomizing nozzles 531 and the annular water pipe 530.
[0039] A limiting rod 5271 is fixedly connected inside the dust suppression cannon barrel 510, and an adjusting ring 527 is slidably connected to the limiting rod 5271. This can limit the adjusting ring 527, preventing it from shifting during movement and increasing the stability of the device's frame when deformed.
[0040] The connecting pipe 532 is a rubber hose component, and the middle part of the connecting pipe 532 is bent into a spiral shape to match the position movement of the adjusting ring 527. When the adjusting ring 527 is displaced, it will simultaneously drive the atomizing nozzle 531 to move. The spiral connecting pipe 532 in the middle can adaptively match to ensure the normal delivery of water resources before and after adjustment.
[0041] In this embodiment, when the stabilizing arc plate 522 moves, it will simultaneously pull the second frame 528 and the adjusting ring 527 to move horizontally, which can further increase the stability of the first frame 521 and the stabilizing arc plate 522 and improve the structural strength of the entire keel. When the device is running, the high-pressure water pump 400 will sequentially transport external water resources to the annular water pipe 530 and the atomizing nozzle 531. The fan 511 delivers wind power, and the wind power drives the atomized water droplets after passing through the ventilation duct to carry out spraying dust suppression operations.
[0042] like Figure 1 , Figure 4 and Figure 7 As shown, an extension plate 5221 is fixedly connected to one side of the inner edge of the stabilizing arc plate 522, and an movable groove 5222 matching the adjacent extension plate 5221 is provided on the other side of the inner edge of the stabilizing arc plate 522. A sliding groove 5223 communicating with the movable groove 5222 is provided in the stabilizing arc plate 522. A spring 5225 is fixedly connected to one end of the inner wall of the sliding groove 5223, and a slider 5224 is fixedly connected to the other end of the spring 5225. The slider 5224 passes through the sliding groove 5223 and is fixedly connected to the adjacent extension plate 5221.
[0043] In this embodiment, when the first frame 521 and the second frame 528 deform, the distance between adjacent stabilizing arc plates 522 will change, thereby adjusting the ventilation opening diameter. When the ventilation opening diameter increases, the extension plate 5221 will move in the movable groove 5222, and the slider 5224 will move synchronously with the extension plate 5221 and squeeze the spring 5225, ensuring the stability of multiple stabilizing arc plates 522 before and after deformation and improving the structural strength of the entire keel.
[0044] like Figure 1 and Figure 2 As shown, a motor 220 is fixedly installed on the housing 100, and bevel gears 230 that mesh with each other are fixedly connected to the output shaft of the motor 220 and the bottom surface of the mounting bracket 200.
[0045] A first electric push rod 300 is hinged to the mounting bracket 200, and the other end of the first electric push rod 300 is hinged to the dust suppression cannon 510.
[0046] The housing 100 has a circular groove 110, and the bottom end of the mounting bracket 200 is fixedly connected to a sliding rod 210, the bottom end of which slides within the circular groove 110. When the mounting bracket 200 rotates, the sliding rod 210 will rotate synchronously within the circular groove 110, increasing the stability of the mounting bracket 200 during rotation.
[0047] In this embodiment, when the motor 220 is started, the mounting bracket 200 will drive the fog cannon mechanism 500 to rotate under the action of the two bevel gears 230 meshing with each other, thereby realizing the adjustment of the rotation angle. Activating the first electric push rod 300 can adjust the elevation angle of the dust suppression cannon 510, thereby realizing the adjustment of the dust suppression direction of the device.
[0048] like Figure 3 and Figure 4 As shown, both the upper and lower surfaces of the dust suppression cannon 510 are equipped with mounting boxes 512. The second electric push rod 523 is fixedly installed inside the mounting box 512, and the moving ring 524 is slidably connected to the mounting box 512. This provides installation space for the second electric push rod 523 and limits the movement of the moving ring 524, ensuring the normal operation of the adjustment.
[0049] The dust suppression cannon 510 is equipped with two filters 513 that filter the air intake of the fan 511. The two filters 513 are staggered inside the dust suppression cannon 510, and the intersection of the two filters 513 forms a ventilation channel. This can filter the air entering the dust suppression cannon 510, preventing larger impurities from entering the dust suppression cannon 510. At the same time, when the air supply is insufficient, outside air can also enter through the ventilation channel formed by the staggered filter 513, so as to ensure the normal air intake of the device.
[0050] Working principle: During dust suppression operation, the device needs to be adjusted according to the specific construction conditions on site. Starting the motor 220 causes the mounting frame 200 to rotate the mist cannon mechanism 500 under the meshing action of two bevel gears 230, thus adjusting the rotation angle. Activating the first electric push rod 300 adjusts the elevation angle of the dust suppression cannon 510. Using these two adjustments, the spraying direction is determined. Activating the second electric push rod 523 moves the moving ring 524 within the dust suppression cannon 510. The push rod 525 applies force to the first frame 521, causing corresponding changes in the stabilizing arc plates 522. The middle section, composed of multiple stabilizing arc plates 522... The shape of the air outlet keel will change, and the stabilizing arc plate 522 will use the second frame 528 to pull the adjusting ring 527 to make corresponding position adjustments. When the multiple first frames 521, multiple stabilizing arc plates 522, multiple second frames 528 and adjusting ring 527 change, the rubber adjusting cylinder 526 will fit against the inner side of the above structure according to its own rubber stretching characteristics, forming a ventilation channel, changing the diameter of the air outlet, thereby realizing the distance of dust suppression spraying. After the above adjustment is completed, the device can work normally. The high-pressure water pump 400 delivers water to the annular water pipe 530 and atomizing nozzle 531, and the fan 511 delivers air force. After the air force passes through the ventilation channel, it drives the atomized water droplets to carry out dust suppression spraying.
[0051] It should be noted that the motor 220, the first electric push rod 300, the high-pressure water pump 400, the fan 511, the second electric push rod 523, the rubber adjusting cylinder 526, and the atomizing nozzle 531 mentioned above are all components with relatively mature existing technology. The specific models can be selected according to actual needs. At the same time, the power supply for the motor 220, the first electric push rod 300, the high-pressure water pump 400, the fan 511, and the second electric push rod 523 can be powered by the built-in power supply or by the mains power supply. The specific power supply method is selected according to the situation. The rubber adjusting cylinder 526 is made of high-strength rubber material and can adaptively match the deformation of the first frame 521, the stabilizing arc plate 522, the second frame 528, and the adjusting ring 527. The water supply of the high-pressure water pump 400 is mostly connected to the water source at the construction site, or a water tank can be set in the box 100. This will not be elaborated here.
[0052] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0053] The above-described embodiments are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.
Claims
1. An engineering construction dust extraction apparatus, characterised in that, Include: Box (100), mounting bracket (200) and high pressure water pump (400), the mounting bracket (200) is arranged at the top of the box (100), and the high pressure water pump (400) is arranged on the box (100); The fog gun mechanism (500) includes a second electric push rod (523), a dust falling cannon barrel (510) rotatably connected in the mounting bracket (200) and a rubber adjusting barrel (526), the dust falling cannon barrel (510) is provided with a fan (511) therein, the dust falling cannon barrel (510) is fixedly connected with a fixed ring (520), one end of the fixed ring (520) is hingedly connected with a plurality of first skeletons (521) which are uniformly distributed, the other end of the first skeleton (521) is hingedly connected with a stable arc plate (522), the telescopic end of the second electric push rod (523) is fixedly connected with a moving ring (524), one end of the moving ring (524) is hingedly connected with a plurality of push rods (525) matched with the first skeleton (521), the end of the push rod (525) away from the moving ring (524) is hingedly connected with the first skeleton (521), one end of the rubber adjusting barrel (526) is fixedly connected with the fixed ring (520) and the outer surface thereof is in close contact with the first skeleton (521) and the stable arc plate (522), the fog gun mechanism (500) further includes an adjusting ring (527) slidably connected in the dust falling cannon barrel (510), one end of the adjusting ring (527) is hingedly connected with a plurality of second skeletons (528) matched with the stable arc plate (522), the end of the second skeleton (528) away from the adjusting ring (527) is hingedly connected with the stable arc plate (522), the other end of the rubber adjusting barrel (526) is fixedly connected with the adjusting ring (527) and the outer surface thereof is in close contact with the second skeleton (528), one end of the dust falling cannon barrel (510) is provided with an annular water pipe (530) in communication with the high pressure water pump (400), a plurality of atomizing nozzles (531) are arranged on the adjusting ring (527), and a connecting pipe (532) is arranged between the atomizing nozzle (531) and the annular water pipe (530).
2. The engineered construction dust extraction device of claim 1, wherein, The inner edge of the stable arc plate (522) is fixedly connected with an extension plate (5221), the other side of the inner edge of the stable arc plate (522) is provided with a movable groove (5222) matched with the adjacent extension plate (5221), the stable arc plate (522) is provided with a sliding groove (5223) in communication with the movable groove (5222), one end of the inner wall of the sliding groove (5223) is fixedly connected with a spring (5225), the other end of the spring (5225) is fixedly connected with a sliding block (5224), the sliding block (5224) penetrates through the sliding groove (5223) and is fixedly connected with the adjacent extension plate (5221).
3. The engineered construction dust control device of claim 1, wherein, The motor (220) is fixedly installed on the box (100), and the output shaft of the motor (220) and the surface bottom end of the mounting bracket (200) are fixedly connected with intermeshing conical gears (230).
4. The engineered construction dust control device of claim 1, wherein, The first electric push rod (300) is hinged on the mounting frame (200), and the other end of the first electric push rod (300) is hinged with the dust falling cannon barrel (510).
5. The engineered construction dust control device of claim 1, wherein, The upper surface and the lower surface of the dust falling cannon barrel (510) are provided with mounting boxes (512), the second electric push rod (523) is fixedly installed in the mounting box (512), and the moving ring (524) is slidably connected with the mounting box (512).
6. The engineered construction dust control apparatus of claim 1, wherein, The dust falling cannon barrel (510) is fixedly connected with a limiting rod (5271), and the adjusting ring (527) is slidably connected with the limiting rod (5271).
7. The engineered construction dust extraction device of claim 1, wherein, The connecting pipe (532) is a rubber hose component, and the middle part of the connecting pipe (532) is curved in a spiral shape to match the position movement of the adjusting ring (527).
8. The engineered construction dust control device of claim 1, wherein, The dust falling cannon barrel (510) is provided with two filter screens (513) for filtering the air inlet of the fan (511), the two filter screens (513) are staggered in the dust falling cannon barrel (510), and the air duct is formed at the staggered positions of the two filter screens (513).
9. The engineered construction dust extraction device of claim 3, wherein, The box (100) is provided with a circular groove (110), the bottom end of the mounting frame (200) is fixedly connected with a sliding rod (210), and the bottom end of the sliding rod (210) slides in the circular groove (110).
Citation Information
Patent Citations
A type of fog cannon for dust suppression in coal mine roadways
CN110374662B
Fog Cannon
CN112974032B
Efficient dust falling device for earth-rock engineering
CN118512862A
Environment-friendly water mist dust removal device for engineering
CN215352676U